Industry Background: The Irreversible Trend Toward Halogen Free Flame Retardancy
What Is Driving the Global Shift to Halogen Free Flame Retardants?
The global flame retardant elastomer market reached USD 2.84 billion in 2025 and is projected to grow to USD 4.62 billion by 2033, at a CAGR of 6.2%. The halogen free flame retardant sub segment is expected to grow from USD 6.31 billion in 2025 to USD 6.94 billion in 2026, at a CAGR of 10.1%. Meanwhile, the application share of halogen free flame retardants in the domestic rubber sector has already reached 61.3%.
This growth is driven by three key forces: on the regulatory front, the EU RoHS Directive (2011/65/EU) explicitly restricts the use of certain brominated flame retardants in electrical and electronic equipment, while the REACH regulation continues to expand its Candidate List of Substances of Very High Concern (SVHC); on the standards front, rolling stock applications are required to comply with the EN 45545 2 standard; on the market front, the Asia Pacific region, driven by rapid infrastructure development, now accounts for 42% of global consumption. As a dedicated halogen free flame retardant factory, SaneZen is fully aligned with these global trends, offering solutions that meet the most stringent regulatory and performance requirements. Our role as a rubber flame retardant additive manufacture means we understand the unique challenges of rubber compounding, and as a trusted UL94 V0 halogen free flame retardant supplier, we deliver proven V 0 rated products. Furthermore, our position as a low smoke flame retardant manufacturer ensures that our solutions provide superior safety in real fire scenarios.
Key Takeaways:
✓ The global halogen free flame retardant market continues to expand at a CAGR of 10.1%
✓ EU RoHS/REACH regulatory frameworks are tightening
✓ Asia Pacific leads with 42% market share as the largest consumer region
✓ Halogen free has shifted from a “trend” to a “market access requirement”
Chapter 1: The “Impossible Triangle” of Rubber Flame Retardancy – Why Conventional Solutions Are Destined to Fail
What Is the “Impossible Triangle” of Rubber Flame Retardancy?
EPDM, in its standard formulation, does not inherently achieve a UL94 V 0 flame retardant rating, as it is combustible and readily propagates flames. The same holds true for NBR. The core challenge in rubber flame retardancy lies in three mutually constraining dimensions – flame retardant efficiency, mechanical properties, and processing economy – which together form a classic “impossible triangle”:
- Increasing flame retardant loading → deterioration of mechanical properties (reduced tensile strength, lower elongation at break, loss of hardness control)
- Increasing flame retardant loading → deterioration of processing characteristics (poorer flowability, delayed curing, higher energy consumption)
- Pursuing high LOI values → generation of substantial smoke and toxic gases during combustion (a critical hazard in real fire scenarios)
Conventional halogen free flame retardant solutions – such as metal hydroxides like aluminium hydroxide and magnesium hydroxide – require extremely high loadings (typically exceeding 150 phr) to achieve a V 0 rating. This results in a sharp increase in compound density, a significant reduction in tensile strength, and severely degraded processing flowability.
For engineers seeking a halogen free flame retardant for EPDM rubber or a UL94 V0 flame retardant for NBR compounds, the limitations of traditional approaches become immediately apparent. This is precisely why the industry demands a low smoke zero halogen rubber additive for railways and a high tensile strength halogen free flame retardant that does not compromise mechanical integrity. As a halogen free flame retardant for automotive industry solution provider, we recognise that automotive applications require both flame retardancy and long term durability. Our FR99RP is also an effective low smoke flame retardant for rubber compound applications, and a superior non halogen flame retardant for EPDM sealing applications where compression set and sealing force retention are critical.
Key Takeaways:
✓ EPDM and NBR do not naturally achieve UL94 V 0 and must rely on flame retardant modification
✓ Flame retardant efficiency, mechanical properties, and processing economy form a contradictory triangle that is difficult to balance
✓ Traditional metal hydroxide flame retardants trade flame retardancy for significantly compromised material performance at ultra high loadings
✓ The industry urgently needs a “low loading, high efficiency, performance preserving” solution
Chapter 2: Flame Retardancy Mechanism of FR99RP – The Scientific Logic of Multi Modal Synergy
How Does FR99RP Achieve High Efficiency Flame Retardancy?
FR99RP is not a simple single component additive; rather, it achieves multi modal synergistic flame retardancy through a technical pathway of “ultra fining – activation – functionalisation – compounding.” According to its technical data sheet, its flame retardant mechanism operates on three levels:
Definition: Multi Modal Synergistic Flame Retardancy
Multi modal synergistic flame retardancy refers to a technical approach in which, within a single material system, three distinct mechanisms – solid phase charring, gas phase free radical trapping, and endothermic cooling – act in synergy to achieve high efficiency flame retardancy at relatively low addition levels. These three mechanisms complement and reinforce one another, producing a “1+1+1>3” flame retardant effect.
First, the solid phase char barrier effect. Upon heating, FR99RP decomposes on the surface of the finished product, forming a dense ceramic like char layer. This char layer acts as a physical barrier, effectively blocking the diffusion of oxygen, heat, and combustible small molecules during combustion. Unlike FR98RP, which produces violent expansion and large amounts of smoke during combustion, the char layer formed by FR99RP is more stable and compact.
Second, the gas phase free radical trapping effect. The free radicals generated during the decomposition of FR99RP react with H· and OH· radicals in the combustion chain reaction, effectively terminating the chain reaction. This gas phase flame retardant mechanism suppresses sustained flame propagation at the chemical reaction source.
Third, the endothermic cooling effect. During decomposition, FR99RP releases water and carbon dioxide, effectively absorbing substantial heat generated during combustion, thereby inhibiting flame development.
Key Takeaways:
✓ FR99RP employs the four step technical pathway of “ultra fining – activation – functionalisation – compounding”
✓ Solid phase charring, gas phase radical trapping, and endothermic cooling work in synergy
✓ The ceramic like char layer formed is dense and stable, with minimal smoke generation
✓ Multi modal synergy enables FR99RP to achieve high efficiency flame retardancy at lower addition levels
Chapter 3: FR99RP vs. FR98RP – Data Driven Performance Comparison
What Is the Difference Between FR99RP and FR98RP?
SaneZen conducted a systematic comparative test between FR99RP and FR98RP in standardised formulations, covering three base material systems: EPDM 70 Shore A, EPDM 50 Shore A, and NBR 70 Shore A. Key data summaries are presented below:
3.1 EPDM 70 Shore A System (100 phr addition)
| Test Parameter | FR98RP | FR99RP | Improvement |
| Tensile Strength (MPa) | 6.35 | 9.32 | +46.8% |
| Elongation at Break (%) | 417 | 497 | +19.2% |
| Hardness (Shore A) | 76 | 78 | Essentially unchanged |
| Compression Set (120℃×24h, %) | 52.94 | 31.43 | -40.6% |
| Rebound Resilience (%) | 37 | 47 | +27.0% |
| Limiting Oxygen Index LOI (%) | 42.3 | 35.4 | FR98RP higher |
Heat Aging Resistance Comparison (100℃×70h):
| Test Parameter | FR98RP | FR99RP |
| Tensile Strength Change Rate (%) | -7.56 | -3.54 |
| Elongation at Break Change Rate (%) | -34.05 | -18.31 |
Curing Characteristics (180℃×5min):
| Test Parameter | FR98RP | FR99RP |
| MH ML (Crosslink Density Indicator) | 10.18 | 13.58 |
| TC90 (Optimum Cure Time, sec) | 211 | 112 |
3.2 EPDM 50 Shore A System (100 phr addition)
| Test Parameter | FR98RP | FR99RP |
| Tensile Strength (MPa) | 8.03 | 9.31 |
| Rebound Resilience (%) | 44 | 51 |
| LOI (%) | 41.5 | 30.5 |
3.3 NBR 70 Shore A System (100 phr addition)
| Test Parameter | FR98RP | FR99RP |
| MH ML (Crosslink Density) | 8.45 | 12.53 |
| Rebound Resilience (%) | 24 | 33 |
| LOI (%) | 37.8 | 32.6 |
3.4 Key Findings
FR98RP’s advantage lies in its higher LOI value, but this comes at the cost of: ① significantly degraded mechanical properties; ② severe curing delay (TC90 prolonged from 112 seconds to 211 seconds); ③ poor heat aging resistance; ④ compression set increased by over 40%; ⑤ poor rebound resilience; and ⑥ violent expansion and heavy smoke generation during combustion.
FR99RP achieves an excellent balance between flame retardant efficiency and overall performance. Although its LOI value is slightly lower than that of FR98RP, it demonstrates comprehensive superiority in critical engineering metrics, including tensile strength, elongation at break, heat aging resistance, compression set, and rebound resilience. The ceramic like dense char layer formed by FR99RP results in minimal smoke and low toxic gas release in real fire scenarios, offering significantly higher safety. This makes FR99RP a true halogen free flame retardant for EPDM rubber that preserves mechanical integrity, and an ideal UL94 V0 flame retardant for NBR compounds without sacrificing processing efficiency.
What Is the Engineering Significance of These Differences?
For engineers, these data differences translate into tangible value:
- Compression set reduced from 52.94% to 31.43% → significantly extended service life of sealing components – making FR99RP the preferred non halogen flame retardant for EPDM sealing applications
- TC90 shortened from 211 seconds to 112 seconds → nearly doubled production efficiency and reduced energy consumption
- Tensile strength increased by 46.8% → enables thinner, lighter, and more reliable product designs – delivering the high tensile strength halogen free flame retardant that the market demands
Key Takeaways:
✓ FR99RP delivers a 46.8% improvement in tensile strength over FR98RP in the EPDM 70 Shore A system
✓ Compression set improved by 40.6%, a decisive advantage for sealing applications
✓ Optimum cure time shortened by 47%, substantially enhancing production efficiency
✓ FR99RP forms a ceramic like dense char layer with minimal smoke, offering superior real fire safety – a true low smoke flame retardant manufacturer solution
✓ While FR98RP has a higher LOI, it sacrifices mechanical, processing, and durability performance across the board
Chapter 4: Technical Capabilities – Engineering Assurance from Laboratory to Mass Production
How Does SaneZen Ensure Batch to Batch Consistency and Reliability?
Technical data is only the starting point. For international purchasers, the gap between laboratory performance and mass production consistency is the true risk. SaneZen has established a comprehensive engineering assurance system across the following dimensions:
4.1 Raw Material Control
- Every batch of FR99RP is controlled for particle size distribution (narrow distribution, optimised gradation)
- Controlled for specific surface area (high BET to ensure adequate interfacial bonding with the rubber matrix)
- Controlled for purity (low impurity content, odourless and non toxic)
- Flake like structure with surface treatment to enhance compatibility with the rubber matrix
4.2 Production Process Control
- Employs a complex compounding process route to ensure uniform dispersion of multiple components
- Every batch is tested for rheological properties (ML, MH, TS2, TC10, TC90)
- Every batch is tested for conventional physical properties (hardness, tensile strength, elongation at break, M100, specific gravity)
- Every batch is validated for flame retardant performance (UL94 vertical burning test, Limiting Oxygen Index LOI)
4.3 Quality Certification System
- Product passes RoHS 2.0 testing (in accordance with IEC 62321 series standards)
- Product passes REACH SVHC screening (compliant with Regulation (EC) No 1907/2006) – making it a fully RoHS REACH compliant flame retardant for rubber compounds
- Proven EPDM formulations have passed UL certification
- Compliant with WEEE recycling and treatment requirements
4.4 Engineering Data Recording
SaneZen establishes a complete quality traceability file for every batch of FR99RP, covering:
- Curing curves (MH ML crosslink density, TC90 optimum cure time)
- Full mechanical property data (tensile strength, elongation at break, modulus, hardness)
- Flame retardant performance data (UL94 rating, LOI value)
- Heat aging resistance data (performance change rate at 100℃×70h) – validating its performance as a flame retardant for high temperature rubber applications
- Compression set data (120℃×24h)
- Rebound resilience data
Key Takeaways:
✓ Every batch undergoes full testing for rheology, mechanics, flame retardancy, aging, and compression set
✓ Product complies with RoHS 2.0, REACH SVHC, and UL certification
✓ Complete quality traceability ensures batch to batch consistency
✓ Flake like structure + surface treatment ensures excellent compatibility with the rubber matrix
Chapter 5: Application Scenarios and Industry Standard Compliance
What Are the Best Applications of FR99RP?
FR99RP is widely used in rubber products with demanding flame retardancy and environmental protection requirements:
5.1 Railway Transportation
Railway components must simultaneously meet the flame retardancy, low smoke, and non toxicity requirements of the EN 45545 2 standard. FR99RP has been validated in EPDM, NBR, and other base polymers for V 0 flame retardant rating compatibility with low smoke characteristics. As a dedicated low smoke zero halogen rubber additive for railways, FR99RP ensures compliance with the most stringent railway safety standards.
5.2 Electrical and Electronics
Electrical and electronic products must comply with multiple environmental regulations including RoHS and REACH. FR99RP contains no polybrominated biphenyls (PBB), polybrominated diphenyl ethers (PBDE), chlorine, fluorine, or antimony trioxide, making it fully compliant with EU environmental directives.
5.3 New Energy Vehicles
New energy vehicle high voltage wiring harnesses, charging pile cables, and other components have stringent flame retardancy and heat aging resistance requirements. FR99RP exhibits excellent property retention after heat aging at 100℃×70h, making it an ideal halogen free flame retardant for automotive industry applications.
5.4 Oil and Mining
Mining cables and underground rubber products must meet severe flame retardancy and safety standards. The halogen free, low smoke characteristics of FR99RP provide a significant safety advantage in confined spaces.
5.5 Recommended Dosage Guidelines
| Target Adjustment | Reference Addition |
| Hardness increase of 1 Shore A point | +6–8 phr |
| LOI increase of 1 unit | +3–5 phr |
| Base recommended range | 60–130 phr |
Key Takeaways:
✓ Covers four major application fields: railway transportation, electrical and electronics, new energy vehicles, and oil and mining
✓ Meets multiple standards: EN 45545 2, RoHS, REACH, UL94 V 0
✓ Recommended dosage 60–130 phr, flexibly adjustable according to specific requirements
✓ Halogen free, low smoke properties provide a significant safety advantage in confined space applications
Chapter 6: Customer Value – Why Choose FR99RP
Why Should You Choose FR99RP Over Alternative Solutions?
6.1 Value for R&D Engineers
- Comprehensive data: Complete curing curves, mechanical property data, aging data, and compression set data available for engineering validation
- Clear parameters: Key indicators such as particle size distribution, specific surface area, and purity are provided with clear specifications
- Professional methodology: International standard test methods (IEC 62321, UL94, ISO, etc.) are employed
- Rigorous logic: The multi modal synergistic flame retardancy mechanism is fully supported by theoretical and experimental evidence
- Proven formulations: EPDM formulations have passed UL certification, reducing development risk
6.2 Value for Procurement Managers
- Lower Total Cost of Ownership: 47% reduction in optimum cure time → increased production efficiency → reduced unit energy consumption
- Improved product reliability: 40.6% improvement in compression set → extended service life of sealing components → reduced after sales costs
- Shortened development cycle: Proven certified formulations (UL certified) → reduced repetitive testing → accelerated time to market
- Reduced compliance risk: Full compliance with RoHS, REACH, WEEE → no regulatory compliance concerns – the hallmark of a RoHS REACH compliant flame retardant for rubber compounds
- Batch consistency: Complete quality traceability system → stable incoming material quality → controllable production processes
6.3 Comparative Summary: FR99RP vs. Conventional Solutions
| Dimension | Conventional Metal Hydroxide FR | FR98RP | FR99RP |
| Loading required for V 0 | >150 phr | 80–100 phr | 80–100 phr |
| Tensile strength retention | Severely reduced | Moderately reduced | High retention |
| Compression set | Poor | Poor | Excellent |
| Optimum cure time | Prolonged | Significantly prolonged | Shortened |
| Combustion smoke | High | Extremely high (violent expansion) | Minimal (ceramicisation) |
| Environmental compliance | Yes | Yes | Yes |
FR99RP serves as a superior alternative to metal hydroxide flame retardants for rubber, delivering V 0 performance at significantly lower loadings while preserving mechanical properties and processing efficiency.
Key Takeaways:
✓ For engineers: comprehensive data, clear parameters, proven formulations, and manageable risk
✓ For procurement: lower TCO, higher reliability, shorter lead times, and reduced compliance risk
✓ FR99RP comprehensively outperforms conventional solutions in mechanical performance, processing efficiency, and durability
✓ Ceramicised char layer + low smoke characteristics enhance real fire safety
Chapter 7: Technical Parameters and Product Specifications
Product Specifications of GreenThinking® FR99RP
| Parameter | Specification |
| Product Form | Flake like structure, surface treated |
| Specific Surface Area (BET) | High |
| Particle Size Distribution | Narrow distribution, optimised gradation |
| Purity | High (low impurity content) |
| Odour | Odourless |
| Toxicity | Non toxic |
| Halogen Content | Halogen free (contains no PBB, PBDE, Cl, F, Sb₂O₃) |
| Chemical Stability | Excellent |
Packaging and Storage:
- Packaging: 25 kg/bag, 1000 kg/pallet
- Storage conditions: Dry, cool, and sealed, approximately 25°C
- Shelf life: Approximately 2 years
Chapter 8: Why Choose SaneZen as Your Flame Retardant Technology Partner
Why Work With SaneZenChem?
What Makes SaneZen Different from Other Flame Retardant Suppliers?
Choosing a functional filler supplier is not merely about purchasing a mineral powder. It means selecting a technology partner that understands polymer compounding, physical failure mechanisms, and long term product performance.
SaneZen (SaneZenChem) is precisely such a partner – we are not only a high performance halogen free flame retardant factory, but also a specialty chemical supplier with practical compounding experience in rubber and silicone rubber production. We are a rubber flame retardant additive manufacture that produces and validates its own products, a UL94 V0 halogen free flame retardant supplier with proven V 0 formulations, and a low smoke flame retardant manufacturer dedicated to real fire safety.
8.1 Dual Identity: We Are Both a Compounder and a Flame Retardant Manufacturer
SaneZen operates five major manufacturing divisions:
- Rubber compounds
- Silicone rubber compounds
- Specialty functional fillers
- High efficiency environmentally friendly flame retardants
- Polymer performance additives
What Does This Dual Identity Mean for You?
Because SaneZen itself continuously produces and develops rubber and silicone rubber products, our flame retardant products – including the GreenThinking® FR series – originate from solving real production issues, rather than remaining merely at the laboratory concept stage.
This application driven R&D approach enables us to develop practical solutions that deliver measurable improvements in customer products – from eliminating viscosity spikes during processing and preventing micro crack formation, to ensuring high dielectric strength in demanding electrical environments.
8.2 SaneZen’s Unique Value Proposition
| Dimension | Conventional FR Supplier | SaneZen |
| Technology Source | Laboratory R&D | Laboratory R&D + Production practice validation |
| Product Testing Standards | Raw material testing | Raw material testing + Rubber compounding validation |
| Understanding of Customer Issues | Theory based | Based on our own compounding production experience |
| Technical Support Capability | Provides product data | Provides integrated “product + formulation + process” solutions |
| Issue Response Speed | Requires internal coordination | Direct collaboration between compounding and FR teams |
8.3 FR99RP – Born from Production Practice
The development of FR99RP was no accident. During SaneZen’s own rubber compounding production, the R&D team had long faced a core challenge: how to enable EPDM, NBR, and other rubber products to consistently achieve a UL94 V0 flame retardant rating without sacrificing processing efficiency and mechanical properties?
Conventional halogen free flame retardant solutions typically meant:
- Substantially higher mixing energy consumption
- Significantly prolonged curing times
- Drastic reductions in tensile strength and rebound resilience
- Rough product surfaces and unstable dimensions
- High batch to batch performance variability
It was precisely these real, frontline, persistent production pain points that drove the R&D direction of FR99RP – not pursuing excellence in a single metric (such as LOI value), but rather pursuing optimal balance of overall performance.
8.4 Practical Significance for Customers
SaneZen’s dual identity as “compounder + flame retardant manufacturer” brings you the following unique value:
① Shorter development cycles
Before launching our flame retardants to the market, they have already undergone full process validation in SaneZen’s own rubber formulations – from mixing and curing to finished product testing. This means you receive not just numbers on a technical data sheet, but solutions that have been repeatedly validated in real production environments.
② More precise technical support
When you encounter process issues while using FR99RP, SaneZen’s technical support team can diagnose the problem not only from the flame retardant perspective but also from the holistic viewpoint of rubber compounding – because we do the same thing every day.
③ More reliable quality consistency
SaneZen’s batch control standards for FR99RP are derived from our own stringent requirements for rubber product quality consistency – because we ourselves are rubber compound developers and understand intimately the impact of batch fluctuation on end products.
④ More forward looking product planning
SaneZen closely tracks the evolution of industry standards in railway transportation (EN 45545 2), new energy vehicles, electrical and electronics, and more, proactively planning next generation flame retardant technologies – because we are not only a flame retardant supplier but also a direct supplier of rubber compounds used in these industries.
8.5 Technology Partner, Not Just a Supplier
SaneZen is committed to being your Technology Partner, not merely a flame retardant supplier. This means:
- During the selection phase: We provide complete technical data packages and formulation recommendations
- During the testing phase: We offer customised formulation optimisation support
- During the mass production phase: We ensure batch consistency and provide ongoing technical response
- During the next generation product development phase: We offer forward looking material solution recommendations
Key Takeaways:
✓ SaneZen’s dual identity as “compounder + flame retardant manufacturer” ensures products are born from real production practice
✓ Application driven R&D ensures practical and manufacturable solutions
✓ Five manufacturing divisions cover rubber compounds, silicone rubber, functional fillers, flame retardants, and additives
✓ Provides integrated “product + formulation + process” solutions, not just a single product
✓ Committed to being your Technology Partner, not merely a supplier
FAQ (High Frequency Search Questions)
Q1: What is GreenThinking® FR99RP?
FR99RP is a high efficiency compound halogen free flame retardant developed by SaneZen. Through the technical pathway of “ultra fining – activation – functionalisation – compounding,” it achieves multi modal synergistic flame retardancy, enabling UL94 V 0 flame retardant ratings in a wide range of rubber matrices including EPDM, NBR, NR, SBR, CR, IIR, ACM, and silicone rubber.
Q2: How does FR99RP achieve UL94 V 0 in rubber?
FR99RP operates through three synergistic mechanisms: ① upon heating, it decomposes to form a ceramic like dense char layer that insulates against oxygen and heat; ② the free radicals generated during decomposition trap H· and OH· in the combustion chain reaction; and ③ it releases water and CO₂ while absorbing substantial heat.
Q3: What is the difference between FR99RP and FR98RP?
FR99RP comprehensively outperforms FR98RP in tensile strength (+46.8%), compression set (-40.6%), rebound resilience (+27%), and optimum cure time (-47%). While FR98RP has a higher LOI value, it comes at the cost of degraded mechanical properties, delayed curing, and extremely high smoke generation.
Q4: What rubber types is FR99RP compatible with?
FR99RP is suitable for a wide range of rubber matrices, including EPDM, NBR, NR, SBR, CR, IIR, ACM, and silicone rubber (HCR).
Q5: What is the recommended loading level of FR99RP?
The recommended dosage is 60–130 phr, adjustable according to specific hardness, physical property requirements, flame retardant rating, and processing conditions. As a general guideline, every 6–8 phr increases hardness by 1 Shore A point, and every 3–5 phr increases LOI by 1 unit.
Q6: Is FR99RP RoHS and REACH compliant?
Yes. FR99RP contains no polybrominated biphenyls, polybrominated diphenyl ethers, chlorine, fluorine, or antimony trioxide, and fully complies with EU RoHS 2.0 and REACH regulations – making it a genuine RoHS REACH compliant flame retardant for rubber compounds.
Q7: Does FR99RP contain halogens?
No. FR99RP is a halogen free flame retardant and contains no halogen components.
Q8: What is the shelf life of FR99RP?
Under dry, cool, and sealed conditions (approximately 25°C), the shelf life is about 2 years.
Q9: What applications is FR99RP best for?
Railway components, electrical and electronic parts, new energy vehicle wiring harness sheathing, mining cables, rubber seals, and vibration damping components.
Q10: How does FR99RP affect curing time?
FR99RP shortens the optimum cure time (TC90). In the EPDM 70 Shore A system, TC90 is reduced from 211 seconds (with FR98RP) to 112 seconds, nearly doubling production efficiency.
Q11: Does FR99RP produce smoke when burning?
FR99RP forms a ceramic like dense char layer during combustion, generating minimal smoke – significantly superior to FR98RP, which produces violent expansion and large amounts of smoke. This confirms our position as a low smoke flame retardant manufacturer delivering real fire safety.
Q12: How does FR99RP affect compression set?
FR99RP significantly improves compression set. In the EPDM 70 Shore A system, the compression set (120℃×24h) is reduced from 52.94% (with FR98RP) to 31.43%, an improvement of 40.6% – making it the ideal non halogen flame retardant for EPDM sealing applications.
Q13: Is FR99RP suitable for high temperature applications?
Yes. FR99RP vulcanisates exhibit excellent property retention after heat aging at 100℃×70h, with a tensile strength change rate of only -3.54% – validating its use as a flame retardant for high temperature rubber applications.
Q14: What is the packaging of FR99RP?
25 kg/bag, 1000 kg/pallet.
Q15: How to store FR99RP?
Store in a dry, cool, sealed environment at approximately 25°C.
Q16: Does FR99RP affect the hardness of the compound?
Every 6–8 phr of FR99RP increases hardness by approximately 1 Shore A point.
Q17: Can FR99RP be used in light coloured rubber products?
Yes. FR99RP is light coloured and suitable for both light coloured and dark coloured rubber products.
Q18: What standards does FR99RP meet?
UL94 V 0, RoHS 2.0, REACH SVHC, WEEE. Proven EPDM formulations have passed UL certification.
Q19: How does FR99RP compare to metal hydroxide flame retardants?
FR99RP achieves V 0 at 80–100 phr, whereas metal hydroxides typically require >150 phr; FR99RP has a much smaller impact on mechanical properties compared to metal hydroxides, serving as a superior alternative to metal hydroxide flame retardants for rubber.
Q20: How to get a sample of FR99RP for testing?
Please contact SaneZen: Tel: 86- 13671641995 E mail: yorichen@sanezen.com
Summary
GreenThinking® FR99RP, through the technical pathway of “ultra fining – activation – functionalisation – compounding,” achieves the synergistic action of three flame retardant mechanisms: solid phase charring, gas phase free radical trapping, and endothermic cooling. In the EPDM 70 Shore A system, with a 100 phr addition, FR99RP achieves UL94 V 0 while delivering a tensile strength of 9.32 MPa (46.8% higher than FR98RP), a compression set of just 31.43% (40.6% improvement over FR98RP), and an optimum cure time shortened to 112 seconds (47% shorter than FR98RP). The product fully complies with RoHS 2.0, REACH, and WEEE regulations, and proven formulations have passed UL certification. FR99RP is not only a rubber flame retardant additive manufacture solution but also an engineering solution that helps rubber product manufacturers break through the “impossible triangle” of flame retardant efficiency, mechanical properties, and processing economy. Whether you need a halogen free flame retardant for EPDM rubber, a UL94 V0 flame retardant for NBR compounds, a low smoke zero halogen rubber additive for railways, a high tensile strength halogen free flame retardant, a halogen free flame retardant for automotive industry, – FR99RP delivers on all fronts.
Contact and Call to Action
How to Get Started with FR99RP?
- Technical consultation and sample requests: Contact the SaneZen technical team
- Customised formulation development: Custom solutions based on your specific base polymer, hardness, and flame retardant requirements
- Existing formulation optimisation: Evaluate performance bottlenecks in your current formulations and provide FR99RP replacement solutions
Contact Information:
- Factory Address: Baishou Road, North Zone, Xuanzhou Economic Development Zone, Xuancheng City, Anhui Province, China
- Office Address: Room 1606 1608, Boda Business Building, No. 11 Puhuitang Road, Xuhui District, Shanghai 200030, China
- Tel: 0086 21 6487 9251
- Fax: 0086 21 5106 2693
- E mail: yorichen@sanezen.com
Website: www.sanezenrubber.com
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