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Adhesive for automobile disc brake pad and preparation method thereof

A technology of disc brake pads and adhesives, which is applied in the direction of adhesives, adhesive types, conjugated diene adhesives, etc., and can solve problems such as not being able to be stored for a long time, compatibility is not very ideal, and the adhesive system is unstable

Inactive Publication Date: 2010-09-08
HUNAN BOYUN AUTOMOBILE BRAKE MATERIALS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the adhesives described above use the mixture of phenolic resin and high-temperature-resistant components to prepare adhesives for brake pads. There are two different resins whose compatibility is not ideal, resulting in an unstable adhesive system that cannot be stored for a long time. When curing Silicon atoms cannot be fully combined with phenolic resins to cure and reduce heat resistance. Therefore, we have prepared a silicone-modified phenolic resin with a stable system as the matrix of high-temperature-resistant adhesives. It is an adhesive for brake pads that is resistant to high temperatures and has a simple process.

Method used

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  • Adhesive for automobile disc brake pad and preparation method thereof
  • Adhesive for automobile disc brake pad and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] 100kg of phenol and 140kg of aqueous formaldehyde were added to the reactor, and 30kg of ammonia was added. At 100°C, after 2 hours of reaction, after adding 60kg of organic organic acetoxysilane, the reaction was continued for 4 hours at 100°C, and cooled to 60°C. , dehydration under the condition of vacuum degree of 700-750mmHg, and the reaction ends when the viscosity is measured in No. 4 paint cup at 20-40s / 60°C. Then add 500g of solvent per kilogram of phenolic resin under the condition of 80°C, and finally add 30kg of nitrile rubber. 10kg of propyl gallate, stir evenly to obtain an adhesive for brake pads. Wherein the solvent is one or a combination of ethanol, acetone, ethyl acetate, butyl acetate, ethyl ketone and the like.

Embodiment 2

[0022] 94kg of phenol, 10kg of sodium hydroxide aqueous solution (0.1mol / L). Make it fully dissolved. Add an appropriate amount of paraformaldehyde 120kg, and the mixture is heated to 80 ~ 100 ° C, after 2 hours of constant temperature reaction, after adding 50 kg of organic organoacetoxysilane, continue to react at 100 ° C for 4 hours, and cool down to 60 ℃, dehydrate under the condition of vacuum degree of 700-750mmHg, and measure the viscosity in No. 4 paint cup when the reaction ends at 20-40s / 60℃. Then add the solvent of 500g per kilogram of phenolic resin under the condition of 80°C, and finally add 30kg of nitrile rubber and 10kg of propyl gallate, stir evenly, and obtain the adhesive for brake pads. Wherein the solvent should be one or a combination of ethanol, acetone, ethyl acetate, butyl acetate, ethyl ketone and the like.

Embodiment 3

[0024] The difference between this embodiment and the first embodiment is that the added toughening material is polyvinyl butyral, and the rest are the same as those of the first embodiment.

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Abstract

The invention discloses an adhesive for an automobile disc brake pad and a preparation method thereof, which have stable system, heat resistance and high dynamic strength. The adhesive for the automobile disc brake pad consists of 100 parts of silicone modified phenolic resin, 5-10 parts of toughened material, 1-7 parts of curing agent, 2-5 parts of auxiliary agents and 100-300 parts of solvent. The invention solves the problems of unstable system, bad high-temperature stability, short retention time and bad use technological property of the existing brake pad. The adhesive for the automobiledisc brake pad of the invention is obtained by placing phenol, formaldehyde and organic organoacetoxysilane together to carry out polymerization reaction, dehydrating, adding organic solvent and toughened system and stirring. The adhesive for the automobile disc brake pad of the invention is prepared according to the following steps of: 1, polymerization reacting; 2, cooling and dehydrating; and 3, adding the toughened system and other auxiliary agents, and stirring to prepare the adhesive for the automobile disc brake pad, which has good high-temperature stability and uniform distribution.

Description

technical field [0001] The invention relates to an adhesive used for system stability and high temperature resistance for automobile disc brake pads, and also relates to a preparation method of the adhesive for automobile disc brake pads. Background technique [0002] Adhesive for automotive disc brake pads is a new type of adhesive product used in the automotive brake pad industry. It can not only be used in automobile disc brake pads, but also in drum brake pads, train brake shoes, clutch plates and the bonding between the steel back and friction blocks of various friction materials. It is a key material in friction materials. Due to the more and more extensive use of friction materials, especially the rapid development of the automobile industry, higher and higher requirements are put forward for automobile brake pads. Due to the harsh operating environment and other requirements, corresponding requirements are also put forward for the adhesive used for brake pads. It mu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J161/14C09J129/14C09J109/02C09J123/22F16D69/00
Inventor 刘伯威付军刘咏王坪龙
Owner HUNAN BOYUN AUTOMOBILE BRAKE MATERIALS
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