High abrasion resistance and aging silicone leather and its manufacturing method

Information from the China National Intellectual Property Administration shows that Hubei Xingrui Silicon Materials Co., Ltd. has applied for a patent titled “High Wear Resistance and High Aging Resistant Silicone Leather and Its Manufacturing Method,” with publication number CN121407399A.

Technical Background: Although silicone leather is environmentally friendly, it commonly has the following drawbacks: insufficient wear resistance: conventional silicone leather has < 2,000 wear cycles (Taber test, CS-10 wheel, 1kg load) and < 50,000 wear cycles on Martindale, making it difficult to meet the high-frequency friction needs of automotive steering wheels and seats, outdoor furniture, medical devices, and other high-frequency friction scenarios; Poor aging resistance: In humid and hot environments (85°C/85% RH), it is prone to chalking and cracking, and even more prone to cracking after intense summer exposure. Its service life is short, and it cannot pass the automotive industry’s 1000-hour double 85 test.

Abstract: The present invention relates to the field of silicone technology and specifically discloses a highly wear-resistant and aging-resistant silicone leather and its manufacturing method. The silicone leather comprises a base fabric layer, an organic silicone base layer, an organic silicone surface layer, and a high-strength surface layer arranged sequentially from bottom to top; The surface layer is made of methyl vinyl silicone resin, hydrogen silicone oil, phenyl vinyl silicone oil, vinyl silicone oil, liquid silicone rubber, platinum catalyst, and acetylene cyclohexanol inhibitor materials, forming a ternary composite system of phenyl vinyl silicone oil, methyl vinyl silicone resin, and vinyl silicone oil, which significantly improves wear resistance and aging resistance. The addition of micro-material organosilicon in the surface layer and blending with other raw materials further enhances high wear resistance and aging resistance.

Through its unique synergistic effect of “combining rigidity and flexibility” with “enhanced heat resistance,” the abrasion resistance of silicone leather coatings and their durability after high-temperature aging have been significantly improved. In this system, methylvinyl silicone resin acts as the rigidity reinforcement phase, constructing a three-dimensional network framework, effectively improving the material’s surface hardness and cutting resistance, thereby optimizing initial wear resistance; Vinyl silicone oil acts as a flexible continuous phase, giving the substrate the necessary elasticity and stress buffering to prevent brittle fracture; The key function of phenylvinyl silicone oil lies in the introduction of phenyl groups, which not only enhance the toughness and compatibility of molecular chains but also effectively suppress oxidation, crosslinking, and embrittlement phenomena in polysiloxane networks at high temperatures due to its excellent thermal stability. This synergistic effect ensures that after thermal aging, the material’s cross-linked network structure and “rigid-soft” balance are maximally maintained, significantly reducing the rate of wear resistance degradation, ultimately resulting in a high-performance silicone leather coating that combines excellent mechanical strength, long-lasting wear resistance, and excellent heat aging resistance.

The invention also provides a high-strength surface layer on the surface layer, which contains organosilicon micron materials. Through physical loading, rolling effects, and reduced friction coefficient, it passively resists wear. It is combined with methyl vinyl silicone resin and phenyl vinyl silicone oil, further enhancing wear resistance and aging resistance. At the same time, the high-strength surface layer also gives the silicone leather of this invention a better hand feel.