A kind of basalt fiber cloth/resin-based wet friction material and its preparation method

A technology of basalt fiber cloth and wet friction material, which is applied in the field of basalt fiber cloth/resin-based wet friction material and its preparation, can solve the problems of unstable friction coefficient, large amount of wear, low heat resistance, etc., and improve mechanical mechanics performance, low wear rate, and improved thermal conductivity

Active Publication Date: 2021-11-23
GUANGXI UNIV FOR NATITIES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a basalt fiber cloth / resin-based wet friction material and its preparation method in view of the deficiencies in the prior art; it is hot-pressed by a vulcanizer, and undergoes hot-pressing treatment, stabilizing heat treatment, semi-carbonization treatment, etc. The process route is to prepare a new type of basalt fiber cloth / resin-based wet friction material, which can partially or completely replace the reinforcing effect of organic or inorganic fibers in the friction material, and solve the problem of low heat resistance and wear of brake friction materials for automobiles and engineering machinery Problems of large, unstable friction coefficient and high cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The weight of each component of the wet friction material was weighed: 400 g of basalt fiber cloth, 100 g of boron phenolic resin, 300 g of polyethyl acetate, 30 g of nano-ceramic particles with a particle size of 20 nm, and 250 g of acetone.

[0033] Ingredients: Ultrasonic disperse the above weighed boron phenolic resin, nano-ceramic particles with a particle size of 20nm and acetone for 15 minutes, mix evenly to form an impregnation solution, and keep the temperature of the impregnation solution at 40°C during the mixing process;

[0034] Brushing: Apply polyethyl acetate evenly on the front and back sides of the basalt fiber cloth for surface modification, then place it in the air to dry, and then apply the impregnating liquid evenly to the modified basalt fiber cloth;

[0035] Drying: Put the evenly painted basalt fiber cloth into a blast drying oven at 90°C for drying for 5 hours; during the drying process, the basalt fiber cloth is pressed with a flat plate in the...

Embodiment 2

[0041] The weight of each component of the wet friction material was weighed as follows: 800g of basalt fiber cloth, 300g of cashew nut shell oil modified phenolic resin, 400g of polyethyl acetate, 50g of nano ceramic particles with a particle size of 100nm and 450g of absolute ethanol.

[0042]Ingredients: Ultrasonic disperse the cashew nut shell oil modified phenolic resin, nano ceramic particles with a particle size of 100nm and absolute ethanol for 26 minutes, mix them evenly to form an impregnation solution, and keep the temperature of the impregnation solution at 45°C during the mixing process ;

[0043] Brushing: Apply polyethyl acetate evenly on the front and back sides of the basalt fiber cloth for surface modification, then place it in the air to dry, and then apply the impregnating liquid evenly to the modified basalt fiber cloth;

[0044] Drying: Put the uniformly painted basalt fiber cloth into a blast drying oven at 80°C for drying for 6 hours; during the drying ...

Embodiment 3

[0050] The weight of each component of the wet friction material was weighed as follows: 600g of basalt fiber cloth, 150g of nitrile rubber modified phenolic resin, 400g of polyethyl acetate, 40g of nano-ceramic particles with a particle size of 80nm, and 300g of acetone.

[0051] Ingredients: Ultrasonic disperse the above-mentioned nitrile rubber modified phenolic resin, nano-ceramic particles with a particle size of 80nm and acetone for 30 minutes, mix evenly to form an impregnation solution, and keep the temperature of the impregnation solution at 30°C during the mixing process;

[0052] Brushing: Apply polyethyl acetate evenly on the front and back sides of the basalt fiber cloth for surface modification, then place it in the air to dry, and then apply the impregnating liquid evenly to the modified basalt fiber cloth;

[0053] Drying: Put the uniformly painted basalt fiber cloth into a blast drying oven at 70°C for drying for 2 hours; during the drying process, the basalt f...

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Abstract

The invention discloses a basalt fiber cloth / resin-based wet friction material and a preparation method thereof. The components of the friction material include: basalt fiber cloth as a material skeleton, a thermosetting resin, polyethyl acetate, a friction performance regulator, and a solvent. Its preparation method is to mix acetone or absolute ethanol as a solvent, boron phenolic resin or cashew nut shell oil modified phenolic resin or nitrile rubber modified phenolic resin and ceramic particles in sequence, and use ultrasonic dispersion to make uniform and moderate viscosity impregnation Liquid, then apply basalt fiber cloth, after drying, hot press molding, stabilization heat treatment and subsequent semi-carbonization treatment are performed on the basalt fiber cloth. The brake pad prepared by the present invention is tested by the MM1000‑Ⅲ friction and wear testing machine, and has excellent friction and wear performance, stable braking performance, safety, environmental protection, high and stable wet dynamic and static friction coefficients, low cost, and excellent durability sex and reliability.

Description

technical field [0001] The invention relates to the technical field of traffic materials, in particular to a basalt fiber cloth / resin-based wet friction material and a preparation method thereof. Background technique [0002] Wet friction materials can be used as raw materials for functional accessories in moving parts of machinery to achieve transmission, braking, deceleration, steering, parking and other purposes. Looking at the current information on wet friction materials, it can be found that wet friction materials not only have a small amount of wear and a stable friction factor, but also have good heat dissipation performance, and are especially widely used in heavy equipment. However, due to technical limitations, most of the wet friction materials currently used in heavy machinery in my country are copper-based friction materials and paper-based friction materials, but composite friction materials are still in the research and development stage. In the actual use p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L61/14C08K9/04C08K7/10C08K3/34C08J5/24C08J7/00B29C35/02C09K5/14
CPCB29C35/02C08J5/24C08J7/08C08J2361/06C08K3/34C08K7/10C08K9/08C08K2201/011C09K5/14
Inventor 尹彩流冯驰原文国富伊春强蓝奇
Owner GUANGXI UNIV FOR NATITIES
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