Hybrid fiber multi-scale reinforced NAO type brake friction material and preparation method thereof

A brake friction material and mixed fiber technology, which is applied in the field of friction materials, can solve the problems of high density and hardness, poor mixing effect of mixed fibers, brake dust and noise, etc.

Pending Publication Date: 2021-09-14
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The purpose of the present invention is to solve the problem of weak bonding performance between natural biological fibers and resin matrix, weak single fiber strength, poor mixing effect of mixed fibers, large braking noise and vibration, serious pairing abrasion, large braking dust and noise, and high density. In view of the problems of high hardness and high hardness, a preparation method of high-performance hybrid fiber multi-scale reinforcement is proposed, and the application of high-performance hybrid fiber multi-scale reinforcement in NAO brake friction materials

Method used

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  • Hybrid fiber multi-scale reinforced NAO type brake friction material and preparation method thereof
  • Hybrid fiber multi-scale reinforced NAO type brake friction material and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0035] 1. A hybrid fiber multi-scale reinforced NAO brake friction material, characterized in that the hybrid fiber multi-scale reinforced NAO brake friction material is calculated by mass fraction, and the content of each component is: hybrid fiber multi-scale reinforcement 6%, Cashew nut shell oil modified phenolic resin 0%, precipitated barium sulfate 15%, wollastonite 16%, potassium titanate lamellae 20%, antimony sulfide 12%, natural graphite 20%, molybdenum disulfide 5%, cashew nut shell oil friction Powder 6%; wherein the mixed fiber multi-scale reinforcement is composed of aramid fibers with a mass fraction of 30% and natural fibers with a mass fraction of 70%, wherein the natural fibers include jute fibers, kenaf fibers and abaca fibers, three natural fibers The mass fraction ratio is 1:1:1.

[0036] 2 Preparation of hybrid fiber multi-scale reinforced NAO type brake friction material The hybrid fiber multi-scale reinforcement is obtained through the following steps: ...

Embodiment 2

[0043] 1 A hybrid fiber multi-scale reinforced NAO brake friction material, characterized in that the hybrid fiber multi-scale reinforced NAO brake friction material contains the following components by mass fraction: hybrid fiber multi-scale reinforcement 23%, cashew nut shell oil Modified phenolic resin 30%, precipitated barium sulfate 8%, wollastonite 5%, potassium titanate lamellae 8%, antimony sulfide 6%, natural graphite 11%, molybdenum disulfide 4%, cashew nut shell oil friction powder 5% ; Wherein the hybrid fiber multi-scale reinforcement is composed of 60% aramid fiber by mass fraction and 40% natural fiber by mass fraction, wherein the natural fibers include ramie fiber, kenaf fiber and flax fiber, the mass fraction ratio of the three natural fibers 1:1:1.

[0044] 2. Preparation of hybrid fiber multi-scale reinforced NAO type brake friction material. The hybrid fiber multi-scale reinforcement is prepared by the following steps: three continuous natural aramid fiber...

Embodiment 3

[0051] 1 A hybrid fiber multi-scale reinforced NAO brake friction material, characterized in that the hybrid fiber multi-scale reinforced NAO brake friction material contains the following components by mass fraction: hybrid fiber multi-scale reinforcement 6%, cashew nut shell oil Modified phenolic resin 40%, precipitated barium sulfate 19%, wollastonite 24%, potassium titanate lamellae 5%, antimony sulfide 2%, natural graphite 2%, molybdenum disulfide 1%, cashew nut shell oil friction powder 1% ; Wherein the hybrid fiber multi-scale reinforcement is composed of aramid fibers with a mass fraction of 40% and natural fibers with a mass fraction of 60%, wherein the natural fibers include jute fibers, abaca fibers and cotton fibers, and the mass fraction ratio of the three natural fibers 1:1:1.

[0052] 2 Preparation of hybrid fiber multi-scale reinforced NAO type brake friction material, the hybrid fiber multi-scale reinforcement is prepared through the following steps:

[0053] 2...

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Abstract

The invention belongs to the technical field of friction materials, and particularly relates to a hybrid fiber multi-scale reinforced NAO type brake friction material and a preparation method thereof. The hybrid fiber multi-scale reinforced NAO type brake friction material comprises a hybrid fiber multi-scale reinforcement body and the like. The synergistic hybrid design between aramid fibers and natural biological fibers can effectively solve the problems that the strength of a single fiber is weak and the hybrid effect between hybrid fibers is not obvious, the coupling synergistic effect between the fibers is increased, and the physical performance, the mechanical performance and the wear resistance of the brake friction material are improved; and due to existence of a spiral structure and nano particles on the surface of the nano silicon dioxide-spiral hybrid fiber bundle, chemical covalent bonds and mechanical interlocking can be formed between natural fibers and a resin matrix, the interface bonding performance between the fibers and the matrix is improved, the mechanical performance and wear resistance of the brake friction material are improved, emission of brake dust is reduced, and the service life of the brake friction material is prolonged.

Description

technical field [0001] The invention belongs to the technical field of friction materials, and in particular relates to a hybrid fiber multi-scale reinforced NAO brake friction material for braking high-end agricultural machinery, oil drilling machines, heavy-duty freight vehicles and urban passenger trains and a preparation method thereof. Background technique [0002] Friction materials are essential supporting materials in machinery and equipment such as high-end agricultural machinery, oil drilling machines, heavy-duty freight vehicles and urban passenger trains. Friction materials are mainly composed of raw materials such as binders, reinforcing components, performance modifiers and fillers. Among them, the reinforcement component is an indispensable part of the brake friction material, which constitutes the skeleton of the brake friction material. The microscopic interface between the reinforcement component and the resin matrix plays the role of load transmission betw...

Claims

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Application Information

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IPC IPC(8): C08L61/14C08L77/10C08L1/02C08K3/30C08K3/34C08K7/00C08K3/04C08J5/04C09K3/14
CPCC08J5/045C08J5/046C08J5/047C09K3/14C08J2361/14C08J2477/10C08J2401/02C08K2003/3045C08K3/34C08K7/00C08K2003/3009C08K3/04
Inventor 刘玉成施爱平杨启志李耀明盘家航储跃祥
Owner JIANGSU UNIV
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