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Natural fiber modified by rare earth chloride and application of natural fiber to preparing automobile brake materials

A rare earth chloride and natural fiber technology, applied in the field of materials science, can solve the problems of restricting the application of natural fibers, achieve excellent braking performance, expand the application field, and be easy to biodegrade

Active Publication Date: 2017-09-15
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although these existing modification methods can improve the interfacial bonding performance between natural fiber and resin matrix to a certain extent, there is no one that can effectively improve the interfacial bonding performance between natural fiber and matrix and at the same time greatly improve the The method of modifying the heat resistance of natural fibers limits the application of natural fibers in high-performance automotive brake materials

Method used

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  • Natural fiber modified by rare earth chloride and application of natural fiber to preparing automobile brake materials
  • Natural fiber modified by rare earth chloride and application of natural fiber to preparing automobile brake materials
  • Natural fiber modified by rare earth chloride and application of natural fiber to preparing automobile brake materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 1) Dissolve lanthanum chloride in absolute ethanol to make a modifier, wherein the mass concentration of lanthanum chloride is 20%; soak bamboo fiber in the modifier for 0.5h, take it out, and dry it in an oven at 100°C 1h, make rare earth lanthanum chloride modified bamboo fiber;

[0028] 2) Dry 25 parts by weight of phenolic resin at 60°C for 0.5h; dry 25 parts by weight of alumina, 15 parts by weight of copper powder, 20 parts by weight of barite, 5 parts by weight of rubber powder, and 3 parts by weight of graphite at 120°C Dry it down for 1h; then put it into a mixer, blend for 5min at a speed of 2830r / min, then drop into 5 parts by weight of rare earth lanthanum chloride modified bamboo fiber, and continue blending for 10min to discharge;

[0029] 3) Put the obtained mixed material into the cavity of a hot-pressing mold at 160°C, heat-preserve and heat-press for 7 minutes under a pressure of 10 MPa; open the cavity to deflate 6 times within 10-60 seconds after the...

Embodiment 2

[0032] 1) Dissolve cerium chloride in absolute ethanol to make a modifier, in which the mass concentration of cerium chloride is 10%; soak the hemp fiber in the modifier for 1.5h, take it out, and dry it in an oven at 140°C 1.5h, make rare earth cerium chloride modified hemp fiber;

[0033] 2) Dry 20 parts by weight of phenolic resin at 55°C for 1 hour; dry 22 parts by weight of alumina, 10 parts by weight of copper powder, 20 parts by weight of barite, 5 parts by weight of rubber powder, and 3 parts by weight of graphite at 100°C Dry for 2h; then put it into a mixer, blend for 7min at a speed of 2500r / min, then drop in 10 parts by weight of rare earth cerium chloride modified hemp fiber, and continue blending for 5min to discharge;

[0034] 3) Put the obtained mixed material into the cavity of a hot-pressing mold at 160°C, heat-preserve and heat-press for 5 minutes under a pressure of 15 MPa; the cavity must be opened to deflate 3 times within 10-60 seconds of starting the ho...

Embodiment 3

[0037] 1) Dissolve lanthanum chloride in absolute ethanol to make a modifier, in which the mass concentration of lanthanum chloride is 2%; soak the bagasse fiber in the modifier for 4 hours, take it out, and dry it in an oven at 80°C 3h, making rare earth lanthanum chloride modified bagasse fiber;

[0038] 2) Dry 15 parts by weight of phenolic resin at 50°C for 2 hours; dry 25 parts by weight of alumina, 17 parts by weight of copper powder, 30 parts by weight of barite, 5 parts by weight of rubber powder, and 3 parts by weight of graphite at 120°C Dry for 2 hours; then put it into a blender and blend for 15 minutes at a speed of 200 r / min, then add 15 parts by weight of rare earth lanthanum chloride modified bagasse fiber, and continue blending for 10 minutes to discharge;

[0039] 3) Put the obtained mixed material into the cavity of a hot-pressing mold at 150°C, heat-preserve and heat-press for 10 minutes under a pressure of 25 MPa; the cavity must be opened to deflate 8 tim...

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Abstract

The invention provides a natural fiber modified by rare earth chloride and application of the natural fiber to preparing automobile brake materials. The natural fiber and the application have the advantages that the natural fiber is modified by rare earth chloride modifiers, accordingly, the interfacial bond properties of the natural fiber and resin matrixes can be effectively improved, and the heat resistance of the natural fiber can be greatly improved; hot press molding is carried out on the obtained modified natural fiber, phenolic resin and friction property modifiers to obtain the resource-saving automobile brake materials with excellent friction and wear properties; processes are simple, the natural fiber is low in cost, each resin-based brake material prepared from the natural fiber modified by rare earth is excellent in friction and wear property and is a resource-saving brake friction material, and accordingly the natural fiber has an excellent application prospect.

Description

technical field [0001] The invention belongs to the field of material science, and in particular relates to a rare earth chloride modified natural fiber and its application in preparing automobile braking materials. Background technique [0002] The trend of automobile development in the 21st century is high speed, environmental protection and energy saving, so higher requirements are put forward for friction brake materials. Natural fiber-reinforced resin-based composite materials, as a kind of environmentally friendly new materials, have become a hot research topic at home and abroad in recent years. my country has included the project of plant fiber plastic composite materials in national research projects and high-tech new materials. Natural fibers have high specific strength and specific modulus, are biodegradable, are suitable as reinforcements for polymer matrix composites, and have strong competitiveness in the application fields of non-structural and semi-structural...

Claims

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Application Information

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IPC IPC(8): C08L61/06C08L97/02C08L21/00C08K3/00C08K3/22C08K3/08C08K3/30C08K3/04C08K3/16F16D69/02
CPCC08K2003/085C08K2003/2227C08K2003/3045C08L61/06C08L2205/03C08L2205/16F16D69/02F16D2200/006C08L97/02C08L21/00C08K3/00C08K3/22C08K3/08C08K3/30C08K3/04C08K3/16
Inventor 高诚辉郑开魁何福善林有希林娇江威周子涵
Owner FUZHOU UNIV
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