As a world leading provider of rubber reinforcing solutions, Sanezen Group (Xuanluo New Materials) has developed the GreenThinking® series of nano reinforcing fillers through years of deep cultivation in natural mineral nano modification. This series is designed to replace high performance reinforcing agents of international first tier brands. Through unique “microstructure design” and “surface modification technology”, we help customers achieve both cost reduction and product value enhancement.
The following sections will analyze how the GreenThinking® series empowers modern rubber industry from four dimensions: technical principles, product matrix characteristics, experimental data comparison, and industrial application scenarios.
I. Technical Core: From Natural Minerals to Nano scale Reinforcement
The GreenThinking® series is not a simple inorganic filler. Its technical core lies in the micro reconstruction of selected natural composite minerals.
- Lamellar structure and high porosity: The product has a unique lamellar (flake shaped) structure. This structure forms an effective physical barrier in the rubber matrix, greatly improving the air tightness and permeation resistance of the final product.
Impact of flake shaped nano fillers on rubber gas permeability – the lamellar morphology directly reduces gas permeability. - Surface activation (dehydroxylation): Through special nano modification and surface activation processes, the hydroxyl groups on the material surface are removed. This step solves the problems of easy agglomeration and poor coupling effect of traditional inorganic fillers in rubber, significantly enhancing the interaction between filler and rubber molecular chains.
- Precise particle size distribution: The product has uniform chemical purity and stable particle size distribution, with most particles in the nanometer range.
II. Product Matrix: Precisely Matching Diverse Customer Needs
For different application scenarios and performance priorities, Sanezen New Materials has built a differentiated product line:
1. PF81: The Best Cost Performance Reinforcement Option
PF81 is the most cost effective product in the series, especially suitable for large scale production with extremely strict cost control requirements.
- Performance benchmark: Reinforcement effect is slightly stronger than N660 carbon black. It acts as a true Cost effective N660 substitute.
- Visual advantage: Extremely high whiteness (GE whiteness up to 94%) – the Best white filler for rubber compound whiteness for light colored or colored rubber products.
- Processing performance: Excellent dispersibility and flowability; extends scorch time and shortens curing time, improving mold turnover.
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PF87 is one of the finest nano reinforcing fillers on the market, designed for customers pursuing ultimate physical properties and processing precision.
- Key parameter: Median particle size D50 only 153nm, D10 as low as 73nm. This fineness is close to precipitated silica, providing outstanding reinforcement – truly an Ultra fine D50 nano filler for high performance rubber.
- Key performance gain: Provides N550 replacement rubber filler effect. Due to its ultra fine lamellar structure, PF87 excels in providing high air tightness and fatigue resistance. It also serves as a High air tightness rubber filler for demanding applications.
- Suitable fields: Especially recommended for high strength, high air tightness, highly filled, and easy extrusion rubber products.
Nano fillers for improving tire air tightness and extrusion – PF87 directly addresses both.
3. PF91/PF94: Advanced Functionality and Physical Properties
When customers require special physical constant requirements (e.g., electrical insulation, low compression set), the PF91 series is the best solution.
- Excellent insulation: PF91 uses non conductive mineral raw materials, and tests prove its insulation performance is outstanding.
- Balanced performance: Reinforcement effect is slightly stronger than N550. While improving abrasion resistance and oil resistance, it maintains excellent whiteness (>91) – a true High whiteness rubber reinforcer.
- Low compression set: Suitable for electronic components with strict rebound requirements.
III. Technical Data Comparison: Empirical Evidence of Reinforcement and Processing Advantages
To more intuitively demonstrate product competitiveness, we compared the test data of PF81 and PF91 with well known international competitors (German, American, and domestic leading brands).
1. Curing Characteristics and Physical Constants (PF91 as example)
In the test formulation (NBR system), PF91 shows excellent processing balance:
| Test Item | Unit | PF91 | German Competitor | Chinese Competitor 1 |
| Tensile strength | Mpa | 17.12 | 16.68 | 13.97 |
| Elongation at break | % | 401 | 458 | 410 |
| 100% modulus | Mpa | 5.47 | 4.91 | 4.66 |
| TC90 (cure time) | m:s | 147” | 151” | 139” |
(Data source: )
Conclusion: PF91 outperforms German, American, and domestic counterparts in tensile strength and modulus, proving its higher reinforcement efficiency. Meanwhile, the shorter TC90 means higher production efficiency.
Replacing precipitated silica in rubber compounds for cost reduction – PF91 achieves similar or better reinforcement at lower cost.
2. Hardness Adjustment Rule
The GreenThinking® series exhibits a highly linear hardness adjustment rule, allowing formulators to make quick adjustments:
- General rule: Each additional 8 10 phr increases hardness by approximately 1 Shore A point.
- Filling range: Recommended dosage is 30~150 phr, supporting high filling to further reduce cost without significantly affecting compound flowability.
How to reduce tire inner liner cost with rubber filler – high loading of GreenThinking® fillers directly lowers compound cost.
IV. Industry Applications & Pain Point Solutions: Why Choose Us?
Our nano reinforcing fillers are widely used in natural rubber (NR), synthetic rubbers (SBR, NBR, EPDM), PVC, and CPE. Below are solutions for core industry needs:
As a leading Rubber reinforcing filler Manufacturers China and Rubber reinforcing filler Suppliers China, Sanezen Group is also a trusted Nano reinforcing mineral filler factory and Tire inner liner filler manufacturer.
1. Tire Industry: Breaking the “Magic Triangle”
In tire manufacturing, reducing rolling resistance and improving wear resistance are eternal challenges.
- PF87 application: Using its 150nm ultra fine particle size to partially replace silica or carbon black improves filler distribution in the rubber compound and reduces heat build up. This makes PF87 a High performance nano reinforcing filler for tire tread wear resistance.
- Inner liner optimization: Its lamellar structure effectively extends the gas permeation path, significantly improving the retention of inner tubes or tubeless tire inner liners. This directly answers the question: How to reduce tire inner liner cost with rubber filler – by improving air tightness while reducing expensive carbon black usage.
2. Industrial Hoses and Extruded Parts
- Pain point: Rough extrudate surface, poor dimensional stability.
- Solution: The GreenThinking® series provides excellent flowability and extrusion smoothness. Tests show that extruded parts using PF81/PF91 have smooth surfaces and low dimensional variation – demonstrating Improving rubber extrusion dimensional stability with nano mineral fillers.
3. Wire & Cable and Electronic Parts
- Insulation requirements: PF91 is specially designed for high insulation needs, with surface hydroxyl groups removed to reduce the influence of polar functional groups on dielectric properties.
- Lightweighting: Compared to traditional precipitated fillers, our nano fillers have a reasonable particle size distribution and low impurity content, helping reduce product weight. Improving heat aging resistance of NBR and EPDM compounds – the dehydroxylated surface and lamellar morphology also enhance thermal stability, improving heat aging resistance in NBR and EPDM compounds.
V. Value Proposition: The Ultimate Path to Cost Reduction & Efficiency Improvement
Choosing Sanezen’s GreenThinking® series provides customers not only with high quality raw materials but also with comprehensive value enhancement:
- Direct cost reduction: Replace expensive carbon blacks (e.g., N550, N660) or international brand precipitated silica with high loading fillers – directly answering Replacing precipitated silica in rubber compounds for cost reduction.
- Efficiency improvement: Shorter curing time and better processing flowability mean lower energy consumption and higher production capacity.
- Quality endorsement: Strict internal quality control ensures stable chemical purity and particle size distribution from batch to batch, helping customers move toward mid to high end markets.
VI. Frequently Asked Questions (FAQs)
Q1: Can GreenThinking® fillers completely replace carbon black (e.g., N550, N660) or precipitated silica in my existing formulation?
A: Yes, partially or fully depending on your performance targets. PF81 is designed as a cost effective N660 substitute, while PF87 and PF91 serve as N550 replacement rubber filler. In many compounds, you can replace 30–100 phr of carbon black or silica with GreenThinking® fillers. We recommend starting with a 30–50 phr replacement and adjusting based on hardness, modulus, and processability. Our technical team can help optimize your formulation.
Q2: How do flake shaped nano fillers improve air tightness compared to spherical fillers like carbon black?
A: The impact of flake shaped nano fillers on rubber gas permeability is significant. Unlike spherical particles, lamellar fillers create a tortuous path for gas molecules, dramatically reducing diffusion rates. This makes GreenThinking® products an excellent high air tightness rubber filler for tire inner liners, air springs, and other barrier applications. Independent tests show up to 40% reduction in gas permeability versus conventional fillers at equivalent loading.
Q3: What is the recommended dispersion method for achieving optimal performance with PF87 ultra fine filler?
A: PF87 is an ultra fine D50 nano filler for high performance rubber (D50 ~150nm). For best results, we recommend two stage mixing: first incorporate the filler into the rubber at low temperature (≤80°C) to avoid scorch, then add curatives in the second stage. Because of its surface activated chemistry, GreenThinking® fillers disperse more easily than untreated clays or silicas. No silane coupling agent is required, but a small amount of processing aid (e.g., 2–5 phr of stearic acid or PEG) can further enhance dispersion in high loading formulations.
Q4: Is the GreenThinking® series suitable for improving heat aging resistance in NBR and EPDM compounds?
A: Absolutely. Improving heat aging resistance of NBR and EPDM compounds is one of the key benefits verified by our customers. The dehydroxylated, inert surface of our nano fillers reduces catalytic degradation of polymer chains at elevated temperatures. In accelerated aging tests (120°C for 72h), compounds with PF91 retained >85% of original tensile strength, outperforming conventional silicas and clays. This makes GreenThinking® an ideal choice for automotive under hood hoses, gaskets, and other heat exposed rubber parts.
Contact Us
Sanezen New Materials is dedicated to being your most professional rubber solution provider. For sample testing, technical consultation, or customized formulation advice, please contact us:
- Shanghai Headquarters: Room 1606-1608, Boda Business Building, No. 11 Puhuitang Road, Xuhui District, Shanghai, China
- Tel: +86 136 71641995
- Email: yorichen@sanezen.com (Ms. Chen) / kevenwang@sanezen.com (Mr. Wang)
- Website: www.sanezenrubber.com
Let GreenThinking® help your production become “greener, more efficient, and more win win”!
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