With the rapid development of the global new energy vehicle (NEV) industry, the high-voltage platforms and large-capacity battery packs of pure electric vehicles impose unprecedented stringent requirements on overall vehicle safety. Among these, flame retardant materials are crucial components for ensuring electrical safety and occupant survival. They must not only effectively prevent fires caused by short circuits, overheating, or external ignition sources but also delay flame spread in extreme situations, buying critical time for occupant evacuation and rescue. For engineers navigating the complex Flame retardant material selection guide, identifying truly RoHS compliant flame retardant materials that meet both performance and regulatory demands is a primary challenge.
1. Stringent Industry Standards and Requirements
Major global automotive markets and OEMs have established strict regulations for the flame retardancy of non-metallic materials used in NEVs. Common requirements include achieving UL94 V-0, a critical benchmark provided by leading UL94 V0 flame retardant manufacturer China entities, or passing specific automotive industry combustion tests. This means a qualified flame-retardant material must meet exceptionally high safety grades while maintaining its fundamental physical properties. EPDM rubber, prized for its excellent properties, has long been widely used. However, as a hydrocarbon polymer, it is inherently combustible. Therefore, developing high-performance flame-retardant EPDM has become an industry imperative, driving the search for effective EPDM flame retardant solutions.
2. Core Application Scenarios for Flame-Retardant EPDM in NEVs
The selection of the Best flame retardant rubber for high voltage connectors and other critical components is non-negotiable. Core application scenarios include:
- Battery Pack System: Components like battery module seals and high-voltage connector seals are a direct Flame retardant for electric vehicle battery packs, safeguarding the heart of the EV.
- High-Voltage Harness and Connection System: High-voltage cable sheathing and connector seals require specialized Flame retardant solutions for EV charging cable insulation.
- Sealing and Vibration Damping System: Specialized sealing strips, such as those acting as a Flame retardant for EV motor compartment seals, have flame-retardancy requirements far exceeding those of traditional seals.
3. Analysis of Flame-Retardant Technology Pathways and Challenges
The industry’s shift is decisively towards Low smoke zero halogen flame retardant systems. The challenge of How to improve EPDM flame retardancy without halogens is central to modern formulation science.
| Flame-Retardant System | Main Components | Преимущества | Disadvantages |
| Halogen-Antimony System | Halogenated FRs + Sb₂O₃ | High efficiency, low loading | Toxic smoke, corrosive gases, restricted by RoHS, REACH |
| Aluminum Hydroxide (ATH) Based Halogen-Free System | High loadings of ATH | Non-toxic, low smoke | High loading degrades mechanical properties and processability |
| Phosphorus-Nitrogen Intumescent System | Combination of carbon, acid, and gas sources | Efficient, low smoke, protective char | Complex Rubber compound formulation for V0 rating |
| Other Specialized Systems | Red phosphorus, nanofillers, etc. | Targeted advantages | Potential issues with color, stability, or cost |
Clearly, against the dual backdrop of tightening environmental regulations and rising performance demands, developing a high-efficiency, low smoke, non toxic halogen free flame retardant solution has become the key focus. This pursuit defines the mission of a leading Halogen free flame retardant manufacturer.
4. Anhui Sanexin: A Full-Spectrum Solution Expert from Material to ComponentAnhui Sanexin Polymer Co., Ltd., as a key Halogen free flame retardant factory and a premier Flame retardant rubber compounds manufacturer, provides a one-stop service spanning from specialty flame retardants to customized high performance rubber compounds. We are the answer for those seeking Where to buy halogen free flame retardant material with full technical support.
4.1 Core Raw Material Advantage: FR Series Phosphorus-Nitrogen Synergistic Flame Retardants
Our independently developed FR series halogen-free flame retardants provide the answer to How to improve EPDM flame retardancy without halogens. Their technical advantages are evident in enabling EPDM compounds to easily achieve the highest UL94 V-0 rating, making us a reliable UL94 V0 certified EPDM material supplier.
Click here for more information and data on FR series flame retardants.
4.2 Strong End-Product Capability: Anhui Lixin Customized Rubber Compounds
Для Custom rubber compound development for automotive applications, the Anhui Lixin factory provides professional Custom rubber compound development services. We specialize in personalized formulation design—offering deep Rubber compound formulation support—based on your specific scenarios and performance specs.
Our Rubber Compound Core Competencies:
- Full-Range Rubber Coverage & Mature Formulation Library: Expertise for rapid, reliable development.
- Substantial Production Capacity Guarantee: Ensures stable supply for Flame retardant rubber manufacturers China.
- Independent Color Compounding Factory: Positions us as a Custom color flame retardant rubber compounds manufacturer.
- Advanced Production Equipment: Ensures high quality and consistency.
Your Requirements, Our Mission. We deliver the optimal Custom rubber compound development services.
4.3 Reliable Product Data Support
Our systematic testing validates performance. The Heat resistance of flame retardant EPDM and other key properties are optimized in our FR series formulations.
| Показатель эффективности | Standard EPDM | EPDM + Traditional ATH System | EPDM + Shanxin FR Series |
| Flame Retardancy (UL94) | HB | V-0 | V-0 |
| Oxygen Index (OI, %) | ~18 | ~28 | ≥30 |
| Прочность на разрыв (МПа) | Baseline | Decrease ~40% | Decrease <15% |
| Удлинение при разрыве (%) | Baseline | Significant Decrease | Retention >80% |
| Smoke Density | — | Low | Very Low |
| Environmental Profile | — | Good | Excellent (Halogen-free, Non-toxic) |
4.4 In-House Production and Group Strength
As part of a powerful industrial group, we are leading Flame retardant manufacturers China with a complete industrial chain. Our products are RoHS compliant flame retardant materials, facilitating global market access.
4.5 Validation in Extensive and High-End Application Fields
Наш сайт Low smoke non toxic flame retardant for transportation solutions have gained widespread recognition in high-end sectors like rail transportation and automotive components, serving as a reliable Flame retardant for electric vehicle battery packs and other critical uses.
5. Partner with Anhui Sanexin/Lixin Group to Co-create a Safer Future
The path toward safer new energy vehicles relies on continuous innovation and a reliable supply chain. The Materials Technology Group formed by Anhui Shanxin and Anhui Lixin is your one-stop partner. We combine dual expertise in “Core Flame Retardants + Customized Rubber Compounds” with comprehensive Rubber compound formulation support.
We welcome technical exchanges to jointly build a comprehensive safety barrier—from molecular design to the final component. For a Cost effective halogen free flame retardant manufacturer that does not compromise on performance or support, partner with us.
Anhui Sanexin Polymer Co., Ltd. & Anhui Lixin Rubber Products Co., Ltd.
Dedicated to Materials Technology, Safeguarding Industrial Safety.
English 
Español 
Русский