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Graphene/hard nanometer particle synergistic modified phenolic resin wear-resistant material

A nanoparticle and phenolic resin technology, which is applied in the field of graphene/hard nanoparticle synergistically modified phenolic resin wear-resistant materials and its preparation, can solve the problems that limit the development of high-performance friction materials, pure phenolic resin has high brittleness and heat resistance Insufficient and other problems, the preparation method is simple and efficient, the cost is low, and the effect of inhibiting damage is achieved

Inactive Publication Date: 2018-05-11
ZHONGBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, pure phenolic resin has defects such as high brittleness, poor toughness, poor thermal conductivity and insufficient heat resistance, which limit the development of high-performance friction materials.

Method used

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  • Graphene/hard nanometer particle synergistic modified phenolic resin wear-resistant material
  • Graphene/hard nanometer particle synergistic modified phenolic resin wear-resistant material
  • Graphene/hard nanometer particle synergistic modified phenolic resin wear-resistant material

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preparation example Construction

[0030] In the present invention, the functionalized hard nanoparticles and graphene can have a synergistic effect to prepare a wear-resistant material with better wear resistance. In order to prove the synergistic effect of functionalized hard nanoparticles and graphene, the present invention further provides a method for preparing graphene / hard nanoparticles synergistically modified phenolic resin wear-resistant material, comprising the following steps:

[0031] 1) Functionalization of hard nanoparticles: add hard nanoparticles to the dispersant, ultrasonically disperse to form a hard nanoparticle dispersion with a concentration of 10-100 mg / mL, add a silane coupling agent dropwise to it, and stir for 1-24 hours Finally, centrifuge, wash, and then dry for subsequent use to obtain functionalized hard nanoparticles;

[0032] 2) Wet-mechanical combined mixing: add functionalized hard nanoparticles, graphene, and phenolic resin to the dispersant and stir for 0.5-2 hours before dr...

Embodiment 1

[0042] A preparation method for synergistically modified phenolic resin wear-resistant material of graphene / hard nanoparticles, which comprises the following steps: 1) Functionalization of hard nanoparticles: adding nanometer zirconium dioxide to absolute ethanol, and ultrasonically dispersing to form a concentration It is 50 mg / mL hard nano-zirconia dispersion liquid, add 5 mg / mL γ-aminopropyltriethoxysilane (KH550) dropwise to it, stir in a water bath at 75°C for 4 hours, centrifuge, wash, and then dry Standby; 2) mixing materials: put the above-mentioned modified nano zirconium dioxide (10wt%), graphene (0.2wt%), phenolic resin (89.8wt%) into deionized water and stir for 1h and then dry it. Put the dry mixed raw materials into a high-speed mixer and stir for 10 minutes to make them fully and uniformly dispersed; 3) Composite material hot-press molding: put the mixed raw materials into a mold, and press at a pressure of 45MPa and a temperature of 160°C for 30 minutes. Then p...

Embodiment 2

[0050] A kind of preparation method of graphene / hard nano particle synergistically modified phenolic resin wear-resistant material, it comprises the following steps: 1) hard nano particle functionalization: adding hard nano silicon dioxide in dehydrated alcohol, ultrasonic dispersion Form a hard nano-silica dispersion with a concentration of 10 mg / mL, add 0.3 mg / mL of γ-aminopropyltriethoxysilane (KH550) dropwise to it, stir for 24 hours, centrifuge, wash, and then dry Standby; 2) Wet-mechanical joint mixing: add the above-mentioned modified hard nano-silica (3wt%), graphene (0.5wt%), phenolic resin into acetone and stir for 0.5h and then dry, then Put the dried mixed raw materials into a high-speed mixer and stir for 5 minutes to make them fully and uniformly dispersed; 3) Composite material hot-press molding: put the mixed raw materials into a mold, and press for 30 minutes at a pressure of 20 MPa and a temperature of 160 °C , and then put the molded sample into an oven, and...

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Abstract

The invention belongs to the field of polymer nanometer composite materials, and particularly relates to a graphene / hard nanometer particle synergistic modified phenolic resin wear-resistant materialand a preparing method thereof. The preparing method comprises the following steps of 1, functionalizing hard nanometer particles; 2, using a wet-mechanical method for joint mixing; 3, conducting hotpress molding on a composite material. The graphene / hard nanometer particle synergistic modified phenolic resin wear-resistant material has the advantages of having excellent impact strength and bending strength, being resistant to wear and low in friction coefficient and the like, and is widely applied in the fields of automobiles, electronics, aviation, spaceflight, national defense industries and the like. The preparing method is simple and efficient, and has an industrialized application prospect.

Description

technical field [0001] The invention belongs to the technical field of polymer nanocomposite materials, and in particular relates to a graphene / hard nanoparticle synergistically modified phenolic resin wear-resistant material and a preparation method thereof. Background technique [0002] Phenolic resin (PF) is a traditional friction material matrix resin, which is widely used in automobile and transportation industry, aviation field, military equipment because of its good temperature resistance, chemical corrosion resistance, good mechanical properties and processing technology field, construction industry and so on. However, pure phenolic resin has defects such as high brittleness, poor toughness, poor thermal conductivity and insufficient heat resistance, which limit the development of high-performance friction materials. [0003] Graphene has outstanding electrical, mechanical, and thermal properties, and has the characteristics of large specific surface area and self-l...

Claims

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Application Information

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IPC IPC(8): C08L61/06C08K3/04C08K9/06C08K3/36C08K3/22B29B7/00B29C43/02B29C43/58
CPCC08K3/04B29B7/002B29C43/02B29C43/58B29C2043/5808B29C2043/5816C08K3/22C08K3/36C08K9/06C08K2003/2227C08K2003/2241C08K2003/2244C08K2201/011C08L61/06
Inventor 周少锋王军杰刘亚青王书展赵贵哲
Owner ZHONGBEI UNIV
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