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High-thermal-conductivity and low-thermal-expansion brake lining and preparation method thereof

A brake lining and low thermal expansion technology, which is applied in friction linings, chemical instruments and methods, mechanical equipment, etc., can solve the problems of inconvenient traceability and error-prone ingredients, and achieve strong traceability, convenient ingredients, and high performance. stable effect

Active Publication Date: 2021-02-09
HUBEI FEILONG FRICTION & SEALING MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to meet the friction coefficient requirements, it is also necessary to add friction-increasing materials, such as zirconia, zircon powder, etc. The formula uses a variety of materials, and the ingredients are prone to errors, which is inconvenient to trace

Method used

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  • High-thermal-conductivity and low-thermal-expansion brake lining and preparation method thereof
  • High-thermal-conductivity and low-thermal-expansion brake lining and preparation method thereof
  • High-thermal-conductivity and low-thermal-expansion brake lining and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1 prepares the brake lining of the present invention

[0027] The formula ratio of the brake lining of the present invention of table 1

[0028]

[0029]

[0030] The brake lining of the present invention is processed according to the steps of raw material mixing, pressing, heat treatment, and grinding, and the specific preparation method is as follows:.

[0031] (1) Raw material mixing: carbon fiber, Cu-ZrW 2 o 8 Add 1 / 4 of the phenolic resin and 1 / 4 of the formula to the precipitated barium sulfate into the roller mixer, keep the speed of 240r / min, stir for 4min, and pre-mix; add the rest of the formula In the roller mixer, keep the speed of 450r / min, stir for 5min, and mix the materials evenly;

[0032] (2) Pressing: One-step molding method is adopted, the fabric and the bottom material are the same material, the hot pressing mold is the ejector mold, the lower layer is the raw material, and the upper layer is the steel back; the control temperatu...

Embodiment 2

[0041] Embodiment 2 verifies the performance of the brake lining of the present invention

[0042]The present invention uses the brake lining prepared by the formulas of Examples 1 to 3, commercially available products and two groups of controls to conduct experiments to investigate the thermal expansion and friction coefficient of the brake lining. Among them, there is no carbon fiber in the formula of Comparative Example 1, and the other groups Distribution and consumption are identical with embodiment 1, do not have Cu-ZrW in the prescription of comparative example 2 2 o 8 , other components and consumption are identical with embodiment 1.

[0043] The experimental procedures of thermal expansion and friction coefficient are carried out according to B5763-2008, and the specific results are shown in Table 2 and 3:

[0044] Table 2 Thermal Expansion Experimental Results

[0045]

[0046] It can be seen from Table 2 that the 5 points on each sample were tested according ...

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Abstract

The invention belongs to the technical field of friction braking, and particularly relates to a high-thermal-conductivity and low-thermal-expansion brake lining. The high-thermal-conductivity and low-thermal-expansion brake lining is mainly prepared from the following components of, in parts by weight, 6-10 parts of phenolic resin, 6-12 parts of synthetic graphite, 3-5 parts of high-carbon flake graphite, 10-20 parts of precipitated barium sulfate, 10-15 parts of mineral fibers, 10-15 parts of calcium silicate whiskers, 10-20 parts of Cu-ZrW2O8, 10-20 parts of calcined petroleum coke and 3-10parts of carbon fibers. The brake lining prepared by the method has the advantages of high thermal conductivity, low thermal expansion, stable friction coefficients, low abrasion, low noise and stableperformance.

Description

technical field [0001] The invention belongs to the technical field of friction braking, and in particular relates to a brake lining with high thermal conductivity and low thermal expansion and a preparation method thereof. Background technique [0002] Brake pads are vital parts of motor vehicles, and the performance of the brakes is directly related to the safety of driving. With the continuous progress of the automobile industry, the requirements of automobiles for brake pads are also increasing. In recent years, people have requested to develop friction materials that produce less braking noise. More and more widely used are those that do not contain steel fibers and steel fibers, And contains disc brake linings of NAO material. In the friction material of NAO material used in disc brake linings, in order to ensure the performance required by people, copper components such as copper or copper alloy fibers or particles are added as an essential component. In order to me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16D69/02C09K3/14
CPCF16D69/023F16D69/027F16D2069/002F16D2200/0052F16D2200/0034F16D2200/0086F16D2250/0023F16D2250/0038
Inventor 张学芬罗金中
Owner HUBEI FEILONG FRICTION & SEALING MATERIALS
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