Multi-component silane coupling agent modified phenolic resin-based composite disc brake pad and preparation method thereof
A technology of silane coupling agent and phenolic resin, which is applied in the field of auto parts, can solve problems such as limiting the application of silane coupling agent, affecting product performance, and reducing the modification effect, so as to avoid easy hydrolysis deactivation and enhance the modification effect , Improve the effect of modification efficiency
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Embodiment 1
[0040] Formula 1: A multi-component silane coupling agent modified phenolic resin-based disc brake pad, by mass percentage, including: silicone modified phenolic resin 4%, polyacrylonitrile carbon fiber 4%, aramid pulp 4% , Potassium titanate lamellar 10%, steel fiber 18%, glass fiber 6%, natural flake graphite 10%, granular coke 3%, silicon dioxide 0.5%, barite 38%, composite silane coupling agent 2.5%. Among them, 0.5% of γ-aminopropyltriethoxysilane, 0.5% of γ-(2,3-epoxypropoxy)propyltrimethoxysilane, 0.5% of γ-(methacryloyloxy)propyltrimethoxysilane 0.5%, N-(β-aminoethyl)-γ-aminopropylmethyldimethoxysilane 0.5%, γ-mercaptopropyltrimethoxysilane 0.5%.
[0041] Among them, the flow distance of the silicone-modified phenolic resin is 45 mm, and the gel time is 100 s; the aspect ratio of the polyacrylonitrile carbon fiber is 20:1, and the specific gravity is 1.65 g / ml; the fiber length of the aramid pulp is 1.35 mm, the specific surface area is 10m 2 / g; the aspect ratio of ...
Embodiment 2
[0057] Formula 3: A multi-component silane coupling agent modified phenolic resin-based disc brake pad, by mass percentage, including: silicone modified phenolic resin 7%, polyacrylonitrile carbon fiber 2%, aramid pulp 2% , Potassium titanate plate crystal 34%, steel fiber 5%, glass fiber 2%, natural flake graphite 3%, granular coke 8.5%, silicon dioxide 1.5%, barite 25%, γ-aminopropyl triethoxy 2% ylsilane, 2% γ-(2,3-glycidoxy)propyltrimethoxysilane, 2% γ-(methacryloxy)propyltrimethoxysilane, 2% N-(β-ammonia Ethyl)-γ-aminopropylmethyldimethoxysilane 2%, γ-mercaptopropyltrimethoxysilane 2%.
[0058] Among them, the flow distance of silicone modified phenolic resin is 50mm, and the gel time is 90s; the aspect ratio of polyacrylonitrile carbon fiber is 15:1, and the specific gravity is 1.70g / ml; the fiber length of aramid pulp is 0.80mm , with a specific surface area of 13m 2 / g; the aspect ratio of potassium titanate platelets is 10; the volume ratio of steel fibers is 0.90...
Embodiment 3
[0074] Formula 5: A multi-component silane coupling agent modified phenolic resin-based disc brake pad, by mass percentage, including: silicone modified phenolic resin 5%, polyacrylonitrile carbon fiber 3%, aramid pulp 3% , Potassium titanate plate crystal 22%, steel fiber 11.5%, glass fiber 4%, natural flake graphite 6%, granular coke 6%, silicon dioxide 1%, barite 33.5%, γ-aminopropyl triethoxy 1%, γ-(2,3-glycidoxy)propyltrimethoxysilane 1%, γ-(methacryloyloxy)propyltrimethoxysilane 1%, N-(β-ammonia Ethyl)-γ-aminopropylmethyldimethoxysilane 1%, γ-mercaptopropyltrimethoxysilane 1%.
[0075] Among them, the flow distance of silicone modified phenolic resin is 55mm, and the gel time is 120s; the aspect ratio of polyacrylonitrile carbon fiber is 8:1, and the specific gravity is 1.75g / ml; the fiber length of aramid pulp is 1.01mm , with a specific surface area of 8m 2 / g; the aspect ratio of potassium titanate platelets is 5; the volume ratio of steel fibers is 0.80cc / g; the ...
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