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Elsa Peng is a Petroleum Resin and Tackifier Specialist at Guangzhou Ecopower New Material Co., Limited. With deep technical experience in hydrocarbon resins (C5, C9, and hydrogenated water-white resins), she supports global clients in optimizing formulations for road marking paints, hot melt adhesives, rubber goods, and sealants. Connect with Elsa on LinkedIn.
Silane coupling agent can improve the grip of the tire on the wet road surface, improve its puncture and tear strength, improve the heat resistance and chipping resistance, improve the resistance to ozone aging and cracking, and improve the resistance to Abrasiveness. Features, reduce friction and heat generation, reduce rolling resistance.
Precipitated silica with the help of a coupling agent can improve wet grip and reduce rolling resistance. In oil-extended natural polybutadiene rubber tread compounds, when 14% precipitated silica was used instead of carbon black, road traction was improved by 5%, rolling resistance was reduced by 18%, and fuel consumption was reduced by 3%. The rolling resistance produced by the tread is 50% of the total rolling resistance of the tire. Since the tread compound has a great influence on the rolling resistance of the tire, it is particularly important to reduce the rolling resistance of the tread.
With the help of coupling agents, precipitated silica can improve its puncture and tear resistance and reduce rolling resistance. In the tread of natural rubber truck tires, 30 parts of precipitated silica is used to replace carbon black, which improves the cutting resistance and crack resistance of the tread rubber, reduces the rolling resistance by 30%, and has more obvious high dispersion precipitation Effect silica. .
With the help of coupling agents, silica can improve heat resistance, chip resistance and tear strength. Replacing carbon black with 10 phr precipitated silica in NR and SBR treads also significantly improved heat, chip and tear resistance.
Sidewall Rubber
In sidewall rubber, silica can improve ozone aging resistance, crack resistance and cut resistance through the action of coupling agent.
SiO2, Precipitated Silica, White Carbon, Silicon Dioxide, Conventional Silica Powder, Amorphous Precipitated Silica
Sulfur Silane Coupling Agent Crosile for Rubber Type and Filler Modified |
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| Product Type | Chemical Name | CAS NO | Purity | Application |
| Crosile®69 | Bis [3-(triethoxysilyl) propyl] tetrasulfide | 40372-72-3 | 22% Sulfur Conc | Rubber, tyre |
| Crosile®75 | Bis(3-triethoxysilylpropyl)disulfane | 56706-10-6 | 15% Sulfur Conc | |
| Crosile®264 | Thiocyanicacid,3-(triethoxysilyl) propylester | 34708-08-2 | ≥96% | |
| Crosile®966 | thio-carboxylate fnctional silane | N.A. | ≥97% | |
| Crosile®970 | 3-Mercaptopropylmethyldimethoxysilane | 31001-77-1 | ≥98% | |
| Crosile®1891 | 3-Mercaptopropyltriethoxysilane | 14814-09-6 | ≥97% | Filler Modified, rubber, Silicone oil modifier, sealant |
| Crosile®189 | 3-Mercaptopropyltrimethoxysilane | 4420-74-0 | ≥97% | |
White Filter Powder Precipitated Silica for Rubber |
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| Series | Product Code | Surface Area (BET) m2/g | Application Memo |
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Easily Dispersed Precipitated Silica (Foot Wear, Tire, Rubber Goods) |
Felcosil−195P or Felcosil−195GR | 175 −205 | Rubber Reinforcing Filler: High reinforcing potential and imparts to rubber compounds particularly high shore hardness, tensile strength, tear resistance and abrasion resistance. |
| Felcosil−185P or Felcosil−185GR | 165 −195 | ||
| Felcosil−185MP | 165 −195 | ||
| Felcosil−175P or Felcosil−175GR | 155 −185 | ||
| Felcosil−165P or Felcosil−165GR | 145−175 | ||
| Felcosil−120P or Felcosil−120GR | 105−135 | ||
|
(Tire) |
Felcosil−165HD (Granular) | 145−175 | Highly dispersion silica: Better wet−side resistance than general silica. Low rolling−resistance, low heat buildup Excellent abrasive resistance, tear resistance |
| Felcosil−165MP (Mico pearl) | 145−175 | ||
| Felcosil−120MP | 105−135 | ||
|
Silicone Rubber Grade Series Silica (Silicone Rubber) |
Felcosil−779 | 130-160 | Super ting precipitated silica used in high quality silicone rubber with excellent anti−yellow. |
| Felcosil−779-1 | 150-180 | ||
| Felcosil−800 | 150-180 | ||
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