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Preparation method of fat-dispersed niobium boride silicon carbide-carbon fiber friction material

A niobium boride silicon carbide and friction material technology, which is applied in the field of friction material preparation, can solve problems such as reduced friction performance and potential safety hazards, and achieve the effects of improving wear resistance and high manufacturing cost

Inactive Publication Date: 2018-01-12
SHANDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the friction performance of C / C composite materials will be reduced in a humid environment, which will bring serious safety hazards to the use.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] (1) Set the density to 1.8g / cm 3 The graphitized carbon fiber blanket is fed with a mixed gas of propane gas and nitrogen at a temperature of 900°C. The molar ratio of propane gas: nitrogen is 1:4, the flow rate is controlled at 50ml / min, and the carburizing treatment is performed for 24 hours to obtain a carburized carbon fiber blanket. ;

[0020] (2) Immerse the above-mentioned carburized carbon fiber blanket into a grease slurry with a particle size of less than 0.3 μm and a content of 5% niobium boride, place it in an ultrasonic cleaner and fill it with niobium boride for 50 minutes, take it out and dry it to obtain a filled boride Niobium carbon fiber blanket, synthetic fat slurry is ethanol solution containing 5% synthetic fat;

[0021] (3) Pass the above-mentioned filled niobium boride carbon fiber blanket into a mixed gas of trichloromethylsilane gas, hydrogen gas and argon gas at a temperature of 900°C, and the molar ratio of trichloromethylsilane gas: hydroge...

Embodiment 2

[0025] (1) Set the density to 0.8g / cm 3 The graphitized carbon fiber blanket is fed with a mixture of propane gas and nitrogen at a temperature of 1000°C. The molar ratio of propane gas: nitrogen is 1:5, the flow rate is controlled at 350ml / min, and the carburizing treatment is performed for 18 hours to obtain a carburized carbon fiber blanket. ;

[0026] (2) Immerse the above-mentioned carburized carbon fiber blanket into a grease slurry with a particle size of less than 0.3 μm and a content of 12% niobium boride, place it in an ultrasonic cleaner and fill it with niobium boride for 40 minutes, take it out and dry it to obtain a filled boride Niobium carbon fiber blanket, synthetic fat slurry is an ethanol solution containing 12% synthetic fat;

[0027] (3) Pass the above-mentioned filled niobium boride carbon fiber blanket into a mixed gas of trichloromethylsilane gas, hydrogen gas and argon gas at a temperature of 1000 °C, and the molar ratio of trichloromethylsilane gas: ...

Embodiment 3

[0031] (1) Set the density to 0.1g / cm 3 The graphitized carbon fiber blanket is passed into a mixed gas of propane gas and nitrogen at a temperature of 1100 ° C. The molar ratio of propane gas: nitrogen is 1: 6, the flow rate is controlled at 600ml / min, and the carburizing treatment is performed for 10 hours to obtain a carburized carbon fiber blanket. ;

[0032] (2) Immerse the above-mentioned carburized carbon fiber blanket in a synthetic grease slurry with a particle size of less than 0.3 μm and a content of 20% niobium boride, place it in an ultrasonic cleaner and fill it with niobium boride for 30 minutes, take it out and dry it to obtain a filled boride Niobium carbon fiber blanket, synthetic fat slurry is ethanol solution containing 20% ​​synthetic fat;

[0033] (3) Pass the above-mentioned filled niobium boride carbon fiber blanket into a mixed gas of trichloromethylsilane gas, hydrogen gas and argon gas at a temperature of 1100 °C, and the molar ratio of trichloromet...

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Abstract

The invention discloses a preparing method of a synthetic-fat dispersion niobium boride and silicon carbide-carbon fiber friction material. The preparing method is characterized by including the steps that a graphitized carbon fiber blanket with the density of 0.1-1.8 g / cm<3> is subjected to synthetic-fat dispersion niobium boride filling after being subjected to carburization; silicon carbide is deposited, then embedding siliconizing is carried out, nitridation is carried out in nitrogen atmosphere, and the synthetic-fat dispersion niobium boride and silicon carbide-carbon fiber friction material is prepared. According to the preparing method, the friction material is prepared from the graphitized carbon fiber blanket through the steps of carburization, niobium boride filling, silicon carbide deposition, embedding siliconizing, nitridation and the like; the prepared friction material is high in strength, tenacity and friction performance, and is a friction material adapting to various climate conditions.

Description

technical field [0001] The invention relates to a preparation method of a friction material composited by carbon fiber and ceramic material, and belongs to the technical field of composite material preparation. Background technique [0002] At present, carbon fiber and carbon (C / C) composite materials are mainly used as friction materials. Since the wear resistance of C / C composite materials is relatively low, people are looking for a method for preparing friction materials with higher wear resistance. In addition, the friction performance of C / C composite materials will be reduced in a humid environment, which will bring serious safety hazards to the use. Contents of the invention [0003] The object of the present invention is to provide a method for preparing a friction material that can overcome the above-mentioned defects, achieve higher strength, higher friction performance and adapt to various climatic conditions. Its technical solution is: [0004] The preparatio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/80C04B35/584C04B35/565C04B35/58C04B35/632C04B35/65C04B35/622
CPCC04B35/565C04B35/58064C04B35/584C04B35/622C04B35/632C04B35/65C04B35/806C04B2235/428C04B2235/46C04B2235/48
Inventor 唐竹兴
Owner SHANDONG UNIV OF TECH
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