Boron-modified phenolic resin-based friction plate material reinforced with carbon fiber for mining

A technology of phenolic resin and friction lining, applied in the direction of friction lining, other chemical processes, chemical instruments and methods, etc., can solve the problems of short friction life of friction lining, insufficient braking torque, poor heat resistance, etc.

Inactive Publication Date: 2019-04-12
TAIYUAN BOSHITONG MASCH ELECTRICITY & HYDRAULIC ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention mainly solves the problems that the friction life of the friction plate is short, the braking torque is insufficient and the heat resistance is poor when the coal mine belt conveyor brakes for a long time under heavy load and emergency braking

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A carbon fiber-reinforced boron-modified phenolic resin-based friction plate material for mining is obtained in parts by volume: 25 parts of boron-modified phenolic resin, 20 parts of barite, 3 parts of SiC, 3 parts of graphite, and Ca(OH) 2 15 shares, MoS 2 4 parts, carbon fiber 6 parts. Mix the above raw materials evenly in a planetary ball mill to obtain a uniformly mixed powder. Use a hot press to pressurize the obtained mixed powder at 250°C, pressurize 25MPa, and keep it warm for 25 minutes to obtain a friction plate material. According to different requirements, Made into friction plates for corresponding brakes, and then heat treated at 160°C for 1 hour.

[0023] Table 1

[0024] Test condition (rpm)

[0025] A boron-modified phenolic resin-based friction plate was obtained, with a Vickers hardness of 1.2 GPa, and the friction coefficient and wear rate under the braking conditions used are shown in Table 1 above.

Embodiment 2

[0027] A carbon fiber-reinforced boron-modified phenolic resin-based friction plate material for mining is obtained in parts by volume: 32 parts of boron-modified phenolic resin, 25 parts of barite, 10 parts of SiC, 4 parts of graphite, and Ca(OH) 2 20 shares, MoS 2 5 parts, carbon fiber 10 parts. Mix the above raw materials uniformly in a planetary ball mill to obtain a uniformly mixed powder. Use a hot press at 300°C to pressurize the obtained mixed powder at 25MPa and keep it warm for 30 minutes to obtain a friction plate material. Then, at 160°C , heat treatment for 1 hour.

[0028] Table 2

[0029] Test condition (rpm)

[0030] The obtained boron-modified phenolic resin-based friction lining has a Vickers hardness of 1.35GPa, and the friction coefficient and wear rate under the braking conditions used are shown in Table 2 above.

Embodiment 3

[0032] A carbon fiber-reinforced boron-modified phenolic resin-based friction plate material for mining is obtained in parts by volume: 35 parts of boron-modified phenolic resin, 22 parts of barite, 4 parts of SiC, 6 parts of graphite, and Ca(OH) 2 17 shares, MoS 2 8 parts, carbon fiber 14 parts. Mix the above raw materials uniformly in a planetary ball mill to obtain a uniformly mixed powder. Use a hot press to pressurize the obtained mixed powder at 350°C with a pressure of 25MPa and keep it warm for 35 minutes to obtain a friction sheet material, and then heat it at 160°C , heat treatment for 1 hour.

[0033] table 3

[0034] Test condition (rpm)

[0035] The obtained boron-modified phenolic resin-based friction lining has a Vickers hardness of 1.38GPa, and the friction coefficient and wear rate under the braking conditions used are shown in Table 3 above.

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Abstract

The invention discloses a mine carbon fiber enhanced boron modified phenolic resin base friction plate material. The friction plate material comprises, by volume, 23-35 parts of boron modified phenolic resin, 20-25 parts of barite, 5-10 parts of SiC, 2-7 parts of Al2O3, 3-7 parts of graphite, 15-20 parts of Ca(OH)2, 4-8 parts of MoS2 and 5-15 parts of carbon fiber. According to the friction plate material, the boron modified phenolic resin serves as a bonding agent, short carbon fiber serves as a strengthening phase, various kinds of inorganic matter is added to serve as filler, the multiple components act in cooperation, a nonmetal boron modified phenolic resin base friction plate has good abrasion resistance, the high friction coefficient and high hardness under the condition of heavy load long-time braking, meanwhile, cost is low, and the anti-explosion performance is good.

Description

technical field [0001] The invention relates to a modified phenolic resin-based friction plate material and its preparation method, especially a friction plate material reinforced by short carbon fibers and its preparation process, which is suitable for braking and heavy-duty braking of coal transportation equipment . Background technique [0002] Coal mine special belt conveyor is an important coal transportation equipment in the coal mine production process. With the expansion of centralized production capacity, it is developing in the direction of large transport volume, high strength and large inclination angle, and it is easy to cause braking during the braking process. The friction plate wears seriously and has a short service life, which makes it difficult to control the speed of the belt conveyor used in mines and causes speeding accidents. In addition, due to the existence of gas gas in the mine, it is strictly forbidden for the friction pad to smoke or generate sp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16D69/02C09K3/14
CPCC09K3/149F16D69/023F16D2069/003
Inventor 崔功军韩俊瑞寇子明任剑鲁张详
Owner TAIYUAN BOSHITONG MASCH ELECTRICITY & HYDRAULIC ENG CO LTD
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