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| Name | Exterior view | Chemical composition | Complex carrier | Characteristics |
|---|---|---|---|---|
| First ZMBT (MZ)-80 |  |
Chemical composition: Zinc 2-mercaptobenzothiazole salt | Complex carrier: EPDM/SBR | Characteristics: High-speed vulcanization accelerators for natural and synthetic rubber, free from rubber staining properties. MZ exhibits the same performance as M, with a critical vulcanization temperature of 138°C, outstanding scorch resistance, enhanced operational safety, minimal risk of premature curing, and an exceptionally wide vulcanization plateau. |
| First MBT(M)-75 |  |
Chemical composition: 2-Thiobenzothiazole | Complex carrier: EPDM/SBR | Characteristics: A general-purpose accelerator for both natural and synthetic rubber. It offers rapid vulcanization rates, requires low vulcanization temperatures (as low as 125°C), and provides a wide vulcanization plateau. Used in sulfur-free or low-sulfur systems, as well as in chloroprene rubber, it functions effectively as an anti-scorch agent and a vulcanization retarder. Additionally, it helps plasticize and soften raw rubber. |
| First CaO-80 |  |
Chemical composition: Calcium oxide | Complex carrier: EPDM/EVM | Characteristics: Applied to both natural and synthetic rubber; effectively absorbs moisture within the compound, eliminating surface defects caused by water; enhances bubble uniformity in foamed products, significantly reducing defect rates; suitable for use in atmospheric continuous vulcanization systems, such as salt bath, microwave, or hot-air curing processes. |
| First CaO-90 Dehumidifying and Defoaming Agent |  |
Chemical composition: Calcium oxide | Complex carrier: / | Characteristics: Applied to both natural and synthetic rubber; effectively absorbs moisture within the compound, eliminating surface defects caused by water; enhances bubble uniformity in foamed products, significantly reducing defect rates; suitable for use in atmospheric continuous vulcanization systems, such as salt bath, microwave, or hot-air curing processes. |
| First Si172-50 |  |
Chemical composition: Vinyl tris(2-methoxyethoxy)silane | Complex carrier: EPDM/SBR | Characteristics: It is a bifunctional molecule that features both polar and non-polar functional groups, enabling it to react simultaneously with inorganic fillers as well as organic polymers. This enhances the tensile strength of the compound, increases cross-link density, reduces compression set, and improves the overall physical and mechanical properties of the final product. It is particularly suitable for peroxide-crosslinked compounds and offers superior resistance to thermal aging. |
| First CTP-80 |  |
Chemical composition: N-Cyclohexylthiophthalimide | Complex carrier: EPDM/SBR | Characteristics: It is a highly effective early-stage vulcanization inhibitor that has virtually no impact on the optimum cure time. Typically used in combination with sulfonamide or thiazole-type accelerators, it effectively prevents scorching of the rubber compound during high-temperature processing, enabling high-speed, high-temperature operation of calenders and extruders—and ultimately boosting the production capacity of vulcanizing machines. Additionally, it enhances the storage stability of the rubber compound and even exhibits a regenerative effect on materials that have already undergone high-temperature treatment or are at risk of scorching. |
| First E/C-80 |  |
Chemical composition: N-Phenyl-N-[(trichloromethyl)thio]benzenesulfonamide | Complex carrier: EPDM/EVM | Characteristics: An effective high-temperature anti-scorch agent suitable for natural rubber, synthetic rubber, and various vulcanization accelerator systems—including, in particular, EPDM—this product effectively prevents premature scorching during the mixing and storage processes, significantly enhancing operational safety. Compared to CTP, E/C offers superior high-temperature anti-scorch performance with lower dosages, reduced odor, and no formation of nitrosamines during vulcanization. It is especially ideal for applications requiring fast vulcanization at elevated temperatures. |
| FST Si69-50E |  |
Chemical composition: Bis-(triethoxypropyl) tetrasulfide | Complex carrier: EPDM/SBR | Characteristics: Multifunctional silane coupling agents for natural and synthetic rubber. These agents enhance the reinforcing properties of fillers, including white carbon black and light-colored fillers, improve compatibility between fillers and rubber, and boost the degree of rubber crosslinking, resulting in higher elastic modulus and tensile strength. They also significantly improve the abrasion resistance and compression set performance of rubber while reducing both rubber viscosity and energy consumption. Additionally, they prevent scorching during vulcanization, ensuring that rubber products exhibit excellent heat aging resistance. |
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