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Multielement silane coupling agent-modified phenolic resin base combined 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, reducing the modification effect, and affecting product performance, so as to avoid easy hydrolysis deactivation and enhance the modification effect , Improve the effect of modification efficiency

Active Publication Date: 2016-07-27
SHANDONG GOLD PHOENIX
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the one hand, the silane coupling agent itself is easy to be deactivated by hydrolysis, and the long-term storage of raw materials will not only reduce the modification effect, but also cause agglomeration, agglomeration, etc., which will affect product performance; on the other hand, separate modification of inorganic raw materials will also bring Complex process and high cost
Therefore, the above modification process problems also limit the application of silane coupling agents in the brake pad industry

Method used

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Examples

Experimental program
Comparison scheme
Effect test

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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Abstract

The invention provides a multielement silane coupling agent-modified phenolic resin base combined disc brake pad and a preparation method thereof, and relates to the technical field of automobile parts.The brake pad is prepared from, by mass, 4-7% of organosilicone-modified phenolic resin, 2-4% of polyacrylonitrile carbon fibers, 2-4% of aramid pulp, 10-34% of potassium titanate lamellae, 5-18% of steel fibers, 2-6% of glass fibers, 3-10% of natural flake graphite, 3-10% of granulated coke, 0.5-1.5% of silicon dioxide, 25-40% of barite and 2.5-10% of a multielement silane coupling agent.The disc brake pad has the advantages of being good in interfacial compatibility, stable in friction coefficient and product quality, excellent in wear resistance and anti-noise performance and the like; besides, a material modification process and a mixing process are integrated in the preparation method of the disc brake pad, so that production efficiency is high, modification cost is lowered, and the process is simple.

Description

technical field [0001] The invention relates to the technical field of auto parts, in particular to a multi-component silane coupling agent modified phenolic resin-based composite disc brake pad and a preparation method thereof. Background technique [0002] In disc brake pads, most of the reinforcing materials and fillers used in friction materials are inorganic minerals. Because these inorganic materials have less hydroxyl structure on the surface, they have different interface properties with the matrix, that is, organic polymers, and have poor compatibility. Therefore, if necessary, it is necessary to modify the surface of the filler with a silane coupling agent to enhance its compatibility with the phenolic resin matrix, dispersibility, mechanical strength and comprehensive performance. Traditional friction materials use a single silane coupling agent as a surface modifier to modify reinforcing fibers, mineral fillers, and friction performance modifiers in a certain pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/32F16D69/02
CPCC04B26/32C04B2111/00362F16D69/02C04B14/022C04B14/024C04B14/06C04B14/368C04B14/305C04B14/386C04B14/48C04B14/42C04B16/0691C04B24/42
Inventor 甄明晖管崎崎仇溢
Owner SHANDONG GOLD PHOENIX
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