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Semimetal brake pad and preparation method thereof

A technology of brake pads and semi-metal, which is applied in the field of semi-metal brake pads and its preparation, can solve the problems of poor heat dissipation and low strength of friction materials, and achieve the effects of easy operation, good mechanical properties and meeting application requirements

Active Publication Date: 2017-07-04
ZHEJIANG IND & TRADE VACATIONAL COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the friction material prepared by using the friction layer raw material of this patent has the problems of low strength and poor heat dissipation effect

Method used

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  • Semimetal brake pad and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0032] A semi-metallic brake pad, including a stainless steel back plate and a friction block, the raw materials for preparing the friction block and their mass percentages are: 44% iron powder, 9.14% steel fiber, 6.86% copper-based fiber, 6% jute fiber, chromous acid Ferrous 4%, epoxy resin 17%, fluorine rubber powder 3.75%, nitrile rubber powder 1.5%, nitrile rubber powder 0.75%, silica airgel 0.5%, silicon carbide 2%, nano-titanium dioxide 3%, Maleic anhydride 0.6%, imide 0.4%, graphene 0.5%. Among them, the specific surface area of ​​silica airgel is 400m 2 / g, the density is 60kg / m 3 ; Graphene is a stack of carbon atoms with 3 to 10 layers of benzene ring structure.

Embodiment 2

[0034] A semi-metallic brake pad, including a stainless steel back plate and a friction block, the raw materials for preparing the friction block and their mass percentages are: iron powder 53%, steel fiber 7.29%, copper-based fiber 6.07%, aluminum-based fiber 3.64%, jute fiber 2%, ferrous chromite 3%, epoxy resin 15%, fluororubber powder 2.75%, nitrile rubber powder 1.57%, nitrile rubber powder 1.18%, silica airgel 0.6%, silicon carbide 1% , nano titanium dioxide 2%, maleic anhydride 0.18%, imide 0.21%, methyl acrylate 0.11%, graphene 0.4%. Among them, the specific surface area of ​​silica airgel is 500m 2 / g, the density is 50kg / m3; graphene is a carbon atom stacked by 3 to 10 layers of benzene ring structure.

Embodiment 3

[0036] A semi-metallic brake pad, including a stainless steel back plate and a friction block, the raw materials for preparing the friction block and their mass percentages are: iron powder 56%, steel fiber 7%, copper-based fiber 5.6%, aluminum-based fiber 1.4%, jute fiber 5%, ferrous chromite 2%, epoxy resin 13%, fluororubber powder 2.18%, nitrile rubber powder 1.09%, nitrile rubber powder 0.73%, silica airgel 0.3%, silicon carbide 3% , nano titanium dioxide 1%, maleic anhydride 0.6%, imide 0.6%, methyl acrylate 0.3%, graphene 0.2%. Among them, the specific surface area of ​​silica airgel is 450m 2 / g, the density is 55kg / m3; graphene is a carbon atom stacked by 3 to 10 layers of benzene ring structure.

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Abstract

The invention discloses a semimetal brake pad and a preparation method thereof. The semimetal brake pad comprises a stainless steel back plate and a friction block, wherein the friction block is prepared from raw materials as follows: iron powder, metal fiber, jute fiber, ferrous chromite, epoxy resin, rubber powder, silicon dioxide aerogel, silicon carbide, nanometer titania, a compatilizer and graphene. The preparation method comprises steps as follows: the raw materials of the friction block are blended in percentage by mass and put in a high-speed mixer to be mixed, and a mixed material is obtained; the mixed material is injected into a forming mold and subjected to hot-press forming, and a hot-press formed semi-finished product is obtained; the hot-press formed semi-finished product is placed in a drying oven and dried, and the friction block is obtained; the friction block is bonded on the stainless steel back plate for constant hot-pressure processing, and the semimetal brake pad is obtained. The semimetal brake pad prepared with the method has the advantages of moderate strength, good wear resistance and low noise.

Description

technical field [0001] The invention relates to the field of friction linings, in particular to a semi-metallic brake pad and a preparation method thereof. Background technique [0002] Brake pads are the most critical safety parts in the braking system of automobiles. The existing brake pads are generally composed of steel plates and friction blocks. The friction blocks are mainly prepared from adhesives, fiber reinforced materials, friction performance regulators and inorganic fillers. When braking, the friction block is squeezed on the brake disc or brake drum to generate friction, so as to achieve the purpose of vehicle deceleration and braking. Due to the friction, the friction block will gradually be worn. The currently used brake pads mainly include semi-metallic brake pads. Pads, NAO brake pads (asbestos-free organic polymer brake pads), ceramic brake pads. [0003] Among them, semi-metallic brake pads are mainly rough steel wool as a mixture of reinforcing fibers. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16D69/02
CPCF16D69/028F16D2200/0004F16D2200/0008F16D2200/0034F16D2200/0052F16D2250/0023
Inventor 赵岚
Owner ZHEJIANG IND & TRADE VACATIONAL COLLEGE
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