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Beta-type silicon carbide whisker reinforcement method

A silicon carbide whisker and reinforcement treatment technology, which is applied to improve the performance and expand the application field of photosensitive resin-based composite materials, and can solve the problems of insufficient strength and toughness.

Inactive Publication Date: 2010-04-21
TAIYUAN UNIV OF TECH
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Problems solved by technology

[0005] β-type silicon carbide whiskers are prepared and obtained by chemical vapor deposition growth method, that is, CVD method. In the process of preparing silicon carbide whiskers, due to uncertain factors in temperature, time and process flow, the prepared carbonized Silicon whiskers still have some defects, such as strength and toughness, which cannot meet the requirements. In addition, high-precision cutting-edge products, such as aircraft wings, need high strength and high toughness. Therefore, silicon carbide crystals grown in the vapor phase must be Strengthening and toughening treatment are required to greatly improve the strength and toughness of β-type silicon carbide whiskers

Method used

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  • Beta-type silicon carbide whisker reinforcement method
  • Beta-type silicon carbide whisker reinforcement method
  • Beta-type silicon carbide whisker reinforcement method

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Embodiment Construction

[0075] The present invention will be further described below in conjunction with accompanying drawing:

[0076] Figure 1 It shows the process flow chart of the enhanced treatment method of β-type silicon carbide whiskers and photosensitive resin, which must be strictly followed by the process flow and process parameters, and operated in sequence. First, the enhanced treatment of β-type silicon carbide whiskers is performed, and then matched with the photosensitive resin , mixed to make a composite material with high strength, high toughness and photosensitive properties.

[0077] The required chemical substances and materials should be strictly selected, and the precision and purity should be controlled, and no impurities should be involved to prevent side reactions, so as not to affect the physical properties of β-type silicon carbide whiskers after enhancement.

[0078] The chemical substances used in the enhanced modification treatment method should be strictly weighed, a...

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Abstract

The invention relates to a method for strengthening crystal whisker of beta carbofrax, wherein it strengthens and toughens the beta carbofrax, washes the beta carbofrax via ultrasonic wave, dries in vacuum, adds coupler KH-560+acetone mixture into adhesive slurry; dries in vacuum, vibrates and breaks into beta carbofrax powder. Its strength can reach 24. 6GMPa and its elastic modulus can reach 580.0GMPa. And the product can be mixed with optical sensitive resin to form composite with ultra strong and flexible property. And it can use laser shaping technique to prepare ultra-strength optical sensitive resin composite while its drawing strength is improved 17. 1%, elastic modulus is improved 25. 5%, and strengthen rate is improved 82. 5%. The invention has wide application.

Description

technical field [0001] The invention relates to a strengthening method of β-type silicon carbide whiskers and its application in laser rapid prototyping, which belongs to the technical field of performance improvement and extended application of photosensitive resin-based composite materials. Background technique [0002] Whisker-reinforced resin-based composites have high mechanical strength, wear resistance, high temperature resistance, and low expansion. composite material. [0003] Whiskers are one-dimensional filamentary single crystals with a diameter of 1 to 10 μm. Due to the extremely small size of the whiskers, the internal structure is combined according to the atomic sequence, so there are very few internal structures or surface defects. The strength of the whiskers is higher than that of bulk materials. The strength fiber (one-dimensional high crystal) is an order of magnitude higher than the theoretical strength of the crystal. The whiskers are powdery and fila...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29B15/08B29C70/06
Inventor 王永祯许并社王爱玲王文先
Owner TAIYUAN UNIV OF TECH
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