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A kind of ceramizable phenolic resin and its preparation method and application

A phenolic resin and ceramicization technology, applied in the field of ceramizable phenolic resin and its preparation, can solve the problems of high material porosity, high manufacturing cost, long molding cycle, etc., and achieve excellent process performance, high carbon residue rate, thermal The effect of excellent stability

Active Publication Date: 2020-05-26
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation of the fiber-reinforced silicon carbide ceramic-based composite material not only solves the problems of high raw material cost, long molding cycle, high manufacturing cost, and high material cost in the preparation of ultra-high temperature ceramics and their composite materials by traditional polymer precursor impregnation and pyrolysis (PIP). The problem of high porosity also provides a feasible new method for the manufacture of ultra-high temperature ceramic matrix composites in high-tech fields such as my country's aviation, aerospace and national defense industries, and has a good application prospect

Method used

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  • A kind of ceramizable phenolic resin and its preparation method and application
  • A kind of ceramizable phenolic resin and its preparation method and application
  • A kind of ceramizable phenolic resin and its preparation method and application

Examples

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preparation example Construction

[0066] The preparation method of the present invention will be further described in detail in conjunction with specific examples below. It should be understood that the following examples are only for illustrating and explaining the present invention, and should not be construed as limiting the protection scope of the present invention. All technologies realized based on the above contents of the present invention are covered within the scope of protection intended by the present invention.

[0067] The experimental methods used in the following examples are conventional methods unless otherwise specified; the reagents and materials used in the following examples can be obtained from commercial sources unless otherwise specified.

[0068] The carbon cloth used in the following examples was purchased from the carbon cloth of the brand T300 produced by Toray Corporation of Japan.

Embodiment 1

[0070] Preparation of ceramizable phenolic resin CPF-1 and carbon fiber reinforced silicon carbide ceramic matrix composites

[0071] (1) Preparation of ceramizable phenolic resin CPF-1

[0072] This embodiment uses a solvent-free, wide processing window thermosetting sodium phenolic resin with a solid content of 85.3% and a rotational viscosity at 80° C. of 300 mPa.s. Take 100 grams of the resin and add it into a three-necked flask with a volume of 500 mL, and heat up to a material temperature of 60° C. while stirring. Add 5 grams of boron carbide powder (purity ≥ 98%, particle size less than 1 micron) and 55 grams of aluminum oxide powder (purity ≥ 98%, particle size is about 200nm) into the resin, at 60 ° C Stir at high speed for 15 minutes until the materials are evenly mixed. Pour the mixed system into an aluminum foil box while it is hot, and cool it rapidly to obtain 155 grams of ceramizable phenolic resin CPF-1 with a uniform composition, which is sealed and frozen. ...

Embodiment 2

[0077] Preparation of ceramizable phenolic resin CPF-2 and alumina fiber reinforced silicon carbide ceramic matrix composites

[0078] (1) Preparation of ceramizable phenolic resin CPF-2

[0079] In this embodiment, a solvent-free, wide-processing-window thermosetting aminophenol-formaldehyde resin is used, with a solid content of 92.25% and a rotational viscosity at 80° C. of 2050 mPa.s. Take 100 grams of the resin and add it into a three-necked flask with a volume of 500 mL, and heat up to a material temperature of 85° C. while stirring. 50 grams of zirconium diboride powder (purity greater than or equal to 98%, particle size less than 5 microns), 10 grams of boron carbide powder (purity greater than or equal to 98%, particle size less than 1 micron), 10 grams of zirconium carbide Powder (purity greater than ≥ 98%, particle size less than 5 microns), 10 grams of tantalum carbide powder (purity greater than ≥ 98%, particle size less than 5 microns) and 10 grams of hafnium ca...

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Abstract

The invention provides a ceramic-able phenolic resin, and a preparation method and an application thereof; the ceramic-able phenolic resin has effects of high temperature resistance, high carbon residue and anti-oxidization, is excellent in processability, can satisfy technical requirement of RFI, and can be used for preparing a fiber-reinforced silicon carbide ceramic-based composite material athigh efficiency and quality. The ceramic-able phenolic resin is good in designability on formula, wherein according to practical work temperatures, different ultrahigh temperature ceramic powders, such as boron carbide, silicon carbide, zirconium boride, hafnium carbide, tantalum carbide, SiO2, Al2O3, zirconia and the like, can be selected. In the invention, the fiber-reinforced silicon carbide ceramic-based composite material is produced through a reactive infiltration process of silicon simple substance; compared with a conventional precursor impregnation cracking method, the preparation method is low in raw material cost, short in shaping period, simple in processes, strong in operability, low in manufacturing cost and high in shaping quality. The phenolic resin is convenient in industrial large-scale preparation and is easy to promote and apply.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a ceramizable phenolic (CPF) resin suitable for a resin film infiltration process (RFI) and a preparation method and application thereof. Background technique [0002] Phenolic resin is a kind of polymer material prepared by polycondensation reaction between phenols and aldehydes. It has a series of excellent properties, such as high temperature resistance, high carbon residue, low smoke toxicity, low cost, self-extinguishing flame retardant, etc. It is widely used in construction (thermal insulation materials), transportation (large aircraft, high-speed train interior parts), metallurgy (refractory materials) and other fields, and it is also the most commonly used ablation and heat-resistant composite material matrix in high-tech fields. resin. However, the molecular structure of phenolic resin contains a large number of phenolic hydroxyl functional groups. The presen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/80C04B35/571C04B35/622
CPCC04B35/571C04B35/622C04B35/806C04B2235/3217C04B2235/3244C04B2235/3418C04B2235/3804C04B2235/3817C04B2235/5224C04B2235/5248C04B2235/6562C04B2235/6567
Inventor 罗振华赖剑雷王传开赵彤
Owner INST OF CHEM CHINESE ACAD OF SCI
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