Rubber Heat Resistance and AntiReversion Agent: Additive for Demanding Rubber Applications

I. Introduction: New Challenges and Responses in the Rubber Industry

In the rubber industry, especially in dynamic application areas such as high-performance tires, damping components, and industrial belts, materials face increasingly stringent challenges. Prolonged high-temperature operation, continuous dynamic stress, and complex chemical environments can easily lead to issues like sulfur reversion , accelerated thermal aging, and degradation of the crosslinking network in rubber materials. This significantly shortens product service life and impacts safety and cost-effectiveness. The instability of polysulfide crosslinks in traditional vulcanization systems becomes a performance weaknesses under extreme conditions.

Against this backdrop, Sane Zenchem leverages profound material science R&D capabilities to introduce GreenThinking® RT88 — an innovative rubber heat resistance agent, crosslinking agent, and anti reversion agent for natural rubber. RT88 is designed not only to address existing problems but also to deliver comprehensive performance enhancement for rubber products, aligning with the modern industrial development philosophy of being green, efficient, and durable. As a leading special rubber chemical supplier y rubber chemical additives factory China, we provide this advanced solution to the global market.

II. In-depth Analysis of GreenThinking® RT88 Core Technical Characteristics

The design of RT88 is based on a deep understanding of vulcanization chemistry. It is not merely a simple additive but a functional agent that actively participates in and optimizes the structure of the vulcanization crosslinking network. Its core value is reflected in the following interrelated aspects:

1. Building a Stable Yet Flexible Crosslinked Network
During the rubber vulcanization process, RT88 effectively participates in reactions, promoting the formation of unique carbon sulfur heterochain crosslinks. This crosslinked structure cleverly combines the high thermal stability of mono/di-sulfide bonds with the flexibility advantages of polysulfide bonds. The result is the establishment of a “thermodynamic stability line of defense” within the crosslinked network. Even under conditions of overcure or prolonged high-temperature (e.g., above 160°C) processing, it effectively inhibits network structure damage caused by excessive breakage or reorganization of crosslinks, thereby significantly maintaining the stability of key mechanical properties such as rubber modulus, strength, and elasticity. This makes RT88 an outstanding rubber additive that maintains properties after aging.

2. Excellent Anti-Reversion Capability
Sulfur reversion is the phenomenon where rubber properties degrade due to a decrease in crosslink density caused by polysulfide bond breakage at high temperatures. RT88 combats reversion through two mechanisms:

• Active Compensation: As a key component in a compensation-type vulcanization system, it directly replenishes sulfur crosslinks lost due to reversion, dynamically maintaining network integrity.
• Structural Optimization: The crosslinks it forms are inherently more resistant to thermal cleavage, fundamentally reducing the tendency of polysulfide bonds to break at high temperatures.

Experimental data show that compounds with RT88 exhibit significantly improved property retention rates after aging (e.g., tensile strength change rate, elongation change rate), demonstrating its excellent anti-reversion and anti-thermal aging properties. This positions us as a premier rubber anti reversion agent manufacturer and a cost effective rubber aging inhibitor manufacturer.

3. Reducing Dynamic Heat Buildup and Rolling Resistance
For products like tires that undergo periodic deformation, internal heat generation is a primary cause of performance degradation and failure. The optimized crosslinked network from RT88 exhibits lower hysteresis loss. This means that during cyclic deformation, more mechanical energy is converted into elastic recovery energy rather than heat. Therefore, it effectively reduces the dynamic heat buildup of rubber. In tire applications, this characteristic directly translates to lower rolling resistance, which not only helps improve vehicle fuel efficiency—aligning with green energy-saving trends—but also reduces material aging caused by heat accumulation, extending tire durability and high speed driving safety. Thus, we serve as an improve tire tread longevity additive supplier.

4. Enhancing Adhesion Between Rubber and Reinforcement Materials
In composite products like tires (rubber to steel cord) and conveyor belts (rubber to fabric or steel rope), interfacial bond strength is crucial. RT88 improves the overall network stability and polarity of the rubber matrix, thereby enhancing the bonding performance between rubber and reinforcement materials like steel wire and fabric. A stronger interface means more effective stress transfer, greatly reducing the probability of failure modes such as delamination and voids, significantly improving the overall durability and reliability of the final product. This expertise underscores our role as a rubber bonding agent manufacturer China, providing solutions like the additive improves rubber steel cord bonding in high temperature.

III. Typical Application Scenarios and Empirical Analysis

The versatility of RT88 makes it suitable for a wide range of rubber product sectors:

• Tire Industry: Applied in tread compound, base compound, sidewall compound, etc., to improve heat resistance, anti-reversion, reduce rolling resistance, and enhance adhesion between carcass and belt layers. It is an ideal choice for creating high-performance, long-life, green tires. We cater to this need as a dedicated tire rubber compounding additives supplier.
• Damping Products: Used in engine mounts, suspensions, bushings, etc. As shown in experimental Table 1, adding 0.8 phr RT88 reduced the dynamic/static stiffness ratio by 10.1%, meaning optimal dynamic cushioning performance is achieved while maintaining sufficient static support, improving comfort.
• Industrial Belting: Used in conveyor belts and transmission belts to improve their heat resistance, fatigue resistance, and dimensional stability, suitable for high-temperature material conveying or high-speed transmission environments.
• Engineering Rubber Products: Such as rollers, seals, wiper blades, etc., extending their service life in high-temperature, dynamic working environments.
• Automotive Rubber Parts: Providing solutions as an automotive rubber parts heat resistance solution provider.

In depth Application Case Study: High Performance Non-Pneumatic (Hollow) Tire

Addressing the market feedback pain spot of non-pneumatic tires being prone to fracture, a dedicated study demonstrated the value of RT88. After adding 1.5 phr RT88 to the base formulation (NR/BR/SBR blend):

• Flex Fatigue Life Leap: Increased from less than 100,000 cycles to over 300,000 cycles, an improvement exceeding 200%, completely resolving the early fracture issue and greatly extending tire life.
• Stiffness Retention and Heat Buildup Reduction: While increasing hardness, dynamic heat buildup was significantly reduced (experimental data indicates approximately 8% reduction), achieving a balance of “rigidity and flexibility.”
• Aging Resistance Significantly Enhanced: After 100°C × 72 hours hot air aging, the change rates of key properties (like hardness increase, strength decrease, elongation decrease) improved by 20-30%, demonstrating excellent long-term durability.

This case fully validates the exceptional efficacy of RT88 in solving complex failure problems under the synergistic action of dynamic mechanics and thermal aging, solidifying our position as a leading non pneumatic tire durability additive supplier y non pneumatic tire durability compound additive manufacturer.

IV. Usage Guidelines and Recommendations

1. Mixing Process
RT88 is a white powder, easily dispersible. It is recommended to add it in the final stage of mixing in an internal mixer or open mill, along with sulfur and accelerators, to ensure uniform dispersion and participation in the final vulcanization reaction network construction.

2. Recommended Dosage

• Used with Traditional Vulcanization Systems: Recommended dosage is 0.5 – 3.0 phr. Specific dosage should be optimized through testing based on rubber type, product requirements, and other compounding systems. Significant effects are typically observed at 1.0-2.0 phr.
• Used Alone (Sulfur-Free System): When used as the main crosslinking agent, the dosage needs to be increased to 7.0 phr. Suitable for certain special heat-resistant seal products.

3. Storage and Packaging

• Packaging: 20 kg/bag.
• Storage: Store in a dry, cool, sealed environment at around 25°C. Shelf life is approximately 2 years under specified storage conditions.

Elemento de prueba	Norma de ensayo	Typical Result
Apariencia	Visual	Polvo blanco
Initial Melting Point	≥ 89.0°C	90.8°C
Heating Loss	≤ 1.0%	0.46%

V. Technical Data Overview

Note: The above are typical product values; specific indicators are subject to the latest product specification sheet.

VI. Our Strength and Capabilities: A Partner for Comprehensive SolutionsAt the core of our service lies deep specialization and extensive manufacturing prowess. As a company dedicated to innovation in rubber chemistry, we offer far more than a single product. While GreenThinking® RT88 is a flagship solution, our portfolio as a special rubber chemical supplier y tire rubber compounding additives supplier is comprehensive, including products like RT56 and a full series of additives designed to help you achieve high-performance tire formulations. Our advantage is built on three pillars: High Performance, High Environmental Standards, and a commitment to fully Bio-based product options.

Beyond chemical manufacturing, our integrated capabilities ensure reliability and scale. We operate a state-of-the-art rubber compounding facility with an annual production capacity of 120,000 metric tons, ranking it among the top ten in China. This massive scale, coupled with our technical expertise, allows us to guarantee consistent quality and timely supply for global demand.

Our true strength, however, comes from understanding. We are not just a rubber chemical additives factory China; we are solution partners. Because we understand our clients’ end-use requirements, master complex formulations, and intimately know the pain points in rubber manufacturing—from heat degradation and reversion to bonding failures—we can effectively bridge the gap between R&D and practical application. This insight enables our technical team to collaborate directly with clients, providing custom rubber compounding service for heat resistance and other properties, offering true one-stop service from additive supply to customized compound development, all backed by significant production capacity. This integrated approach makes us a reliable automotive rubber parts heat resistance solution provider and a strategic partner for rubber anti reversion agent manufacturers y natural rubber additive manufacturers en todo el mundo.

VI. Frequently Asked Questions (FAQs)

Q1: What types of rubber can RT88 be used for?
A1: RT88 has good compatibility with natural rubber (NR), isoprene rubber (IR), polybutadiene rubber (BR), styrene-butadiene rubber (SBR), and other general-purpose synthetic rubbers. It is particularly suitable for systems based on or containing natural rubber, making us a reliable natural rubber additive factory y natural rubber additive manufacturer.

Q2: After using RT88, is it necessary to adjust the original vulcanization system (e.g., sulfur and accelerator dosage)?
A2: Within the recommended dosage range (0.5-3.0 phr), it is usually not necessary to significantly adjust the original vulcanization system. RT88 works synergistically as a functional auxiliary agent. However, fo pursuing extreme performance) or unconventional formulations, small-scale formulation verification testing is recommended to determine the optimal balance.

Q3: Does RT88 affect the processing safety (scorch time) of the compound?
A3: RT88 itself has little effect on the vulcanization onset time, scorch time. Its main action occurs during the mid-to-late stages of the vulcanization reaction, optimizing the crosslinking network. Specific processing safety should be determined by complete formulation and process testing.

Q4: Besides reducing rolling resistance in green tires, does RT88 offer other contributions?
A4: Yes. Beyond directly reducing rolling resistance to save fuel, RT88 extends tire service life by improving heat and reversion resistance, aligning with the resource-saving green concept. Simultaneously, its enhanced durability helps reduce waste generated from premature tire replacement.

VII. Contact Us

We are committed to providing customers with professional technical support and customized solutions. As fabricantes de productos químicos especiales para caucho offering custom rubber compounding service for heat resistance, we invite you to contact us for samples, technical consultation, or to learn more about our products. For those seeking rubber heat resistance and crosslinking agent manufacturers China or rubber heat resistance and crosslinking agent suppliers China, look no further.

Sane Zenchem

Business Address: Room 1606-1608, Boda Business Building, No. 11 Puhuitang Road, Xuhui District, Shanghai

• Factory Address: No. 22 Meizigang Road, Northern District, Xuancheng Economic Development Zone, Anhui Province
• Email: yorichen@sanezen.com
• Página web: www.sanezenrubber.com