Preparation technology method of friction material for clutch facing

A clutch face and friction material technology, applied in the field of friction materials, to achieve the effects of reducing thermal decomposition, dense friction materials, and improving thermal decay resistance

Inactive Publication Date: 2018-02-16
来安县隆华摩擦材料有限公司
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

How to improve the thermal decay resistance of resin-based friction materials has always been a research hotspot. Modifying the resin, reducing the mass fraction of organic resin in the friction material, and adding metal fillers with high thermal conductivity to the friction material can all improve the performance of the resin to a certain extent. The thermal fading resistance of resin-based friction materials, but these studies cannot fundamentally solve the thermal fading resistance of resin-based friction materials

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] The invention discloses a preparation process of a friction material for a clutch face plate, which uses activated potassium feldspar, micron-sized carbon powder, cashew nut shell oil modified phenolic resin, and nitrile resin to be mixed and compounded, and then formed by hot pressing.

[0025] Wherein, the particle size of the micron-sized carbon powder is 9 μm.

[0026] The specific process steps are as follows:

[0027] (1) Activation treatment of potassium feldspar:

[0028] Take an appropriate amount of silane coupling agent KH570 and add it to 0.05mol / L oxalic acid solution, hydrolyze it at room temperature for 25 minutes to make a coupling agent solution with a volume fraction of 8%;

[0029] After heating 17 parts of 40-mesh potassium feldspar powder at 105°C for 6 minutes, add it to the above coupling agent solution at a solid-to-liquid ratio of 1:20, place it in a water bath at 60°C, and stir for 3 hours. After filtering, wash with ethanol for 4 times, and ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
particle sizeaaaaaaaaaa
particle size (mesh)aaaaaaaaaa
specific heat capacityaaaaaaaaaa
Login to view more

Abstract

The invention discloses a preparation technology method of a friction material for a clutch facing. Activated potassium feldspar, micron-scale carbon powder, cashew nut shell oil modified phenolic resin and butyronitrile resin are mixed and compounded, and hot-press molding is carried out. According to the preparation technology method of the friction material for the clutch facing, the high-specific-heat potassium feldspar is selected as a filler, after being activated by oxalic acid, the crystal lattice structure of the potassium feldspar is looser but stacking is compact, the edges of the particles become rough, then the potassium feldspar is subjected to organic activation modification through a coupling agent, the compatibility of the potassium feldspar and a resin substrate is improved, due to the fact that the potassium feldspar has relatively high specific heat capacity, the thermal decomposition of the resin substrate can be effectively reduced, and the thermal decay resistance performance of the resin-based friction material is effectively improved; and in addition, the micron-scale carbon powder is selected as the reinforcing agent, the low particle size enables airtightair holes generated in the pressing process of the material to be well filled with the carbon powder, the friction material is more compact, so that the wear rate is gradually reduced, the anti-thermal expansion performance is good and the friction performance is excellent.

Description

technical field [0001] The invention relates to the technical field of friction materials, in particular to a preparation process for a friction material for a clutch face. Background technique [0002] Resin-based friction composite materials are widely used in automotive braking and transmission fields such as brake pads, brake shoes, brake linings, friction blocks, and clutch faces. Organic materials will thermally decompose above 200°C, and the frictional force of the car will cause the surface temperature of the material to reach 500°C instantly, resulting in the decomposition of the organic resin and the decline of the friction performance of the brake pads, that is, the phenomenon of thermal decay. How to improve the thermal decay resistance of resin-based friction materials has always been a research hotspot. Modifying the resin, reducing the mass fraction of organic resin in the friction material, and adding metal fillers with high thermal conductivity to the fricti...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): F16D69/02C09K3/14
CPCF16D69/027
Inventor 薛正宇
Owner 来安县隆华摩擦材料有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap