Preparation method and application of basalt fiber surface nano-coated multi-scale reinforcement

A basalt fiber and multi-scale technology, applied in the field of fiber reinforced composite materials, can solve the problems of poor interface bonding and low mechanical properties of composite materials, and achieve the effects of alleviating stress concentration, improving comprehensive performance, and improving interface compatibility

Inactive Publication Date: 2017-09-26
ZHONGBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the problems of poor interface bonding between basalt fiber and matrix and low mechanical properties of the composite materia...

Method used

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  • Preparation method and application of basalt fiber surface nano-coated multi-scale reinforcement
  • Preparation method and application of basalt fiber surface nano-coated multi-scale reinforcement
  • Preparation method and application of basalt fiber surface nano-coated multi-scale reinforcement

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Embodiment 1

[0026] A preparation method of a composite material with a nano-coated multi-scale reinforcement on the surface of basalt fiber, comprising the following steps: 1) Nano particle functionalization: adding nano-silica into absolute ethanol, ultrasonic dispersion forming a concentration of 50mg / mL Add 5mg / mL γ-aminopropyltriethoxysilane (KH550) dropwise to the nanoparticle dispersion liquid, and stir in a water bath at 75°C for 4 hours, then centrifuge to precipitate, wash and dry; 2) Preparation of coating solution: Use deionized water to configure the water-soluble polyurethane film-forming agent diluent (concentration of 3wt%), drop 1wt% of γ-(2,3-glycidoxy)propyltrimethoxysilane (KH560) into it, and stir After uniformity, add the above-mentioned dried functionalized nano-silica (concentration of 10mg / mL), ultrasonically vibrate and stir evenly to obtain the coating solution; 3) Surface coating: ultrasonically clean the basalt fiber in acetone and clean it. After drying, add it...

Embodiment 2

[0028] A method for preparing a composite material with a nano-coated multi-scale reinforcement on the surface of basalt fiber includes the following steps: 1) Nanoparticle functionalization: adding carboxylated carbon nanotubes to absolute ethanol, and ultrasonic dispersion to form a concentration of 10 mg / mL of nanoparticle dispersion liquid, into which 0.3mg / mL γ-aminopropyltriethoxysilane (KH550) was added dropwise, stirred in a water bath at 70°C for 24 hours, centrifuged to precipitate, washed and dried; 2) coating liquid Preparation: Use deionized water to prepare the water-soluble polyurethane film-forming agent diluent (concentration is 1wt%), and 1wt% of γ-(2,3-glycidoxy)propyltrimethoxysilane (KH560) is added dropwise to it After stirring evenly, add the above-mentioned dried functionalized carbon nanotubes (concentration 10mg / mL), ultrasonically shake and stir evenly to obtain the coating solution; 3) Surface coating: ultrasonically clean the basalt fiber in acetone...

Embodiment 3

[0030] A method for preparing a nano-coated multi-scale reinforcement composite material on the surface of basalt fibers includes the following steps: 1) Nanoparticle functionalization: adding graphene oxide to absolute ethanol, ultrasonically dispersing to form nanometers with a concentration of 4 mg / mL To the particle dispersion, 20mg / mL of γ-(2,3-glycidoxy)propyltrimethoxysilane (KH560) was added dropwise, stirred in a water bath at 75°C for 24 hours, centrifuged to precipitate, washed, and dried. 2) Preparation of coating solution: Use deionized water to prepare a water-soluble polyurethane solution film-forming agent diluent (concentration is 1.5wt%), and 1wt% of γ-(methacryloxy)propyltrimethoxy is added dropwise to it Silane (KH570), after stirring uniformly, add the above-mentioned dried functionalized graphene oxide (concentration 0.5mg / mL), sonicate and stir uniformly to obtain a coating solution. 3) Surface coating: After ultrasonically cleaning the basalt fiber in ac...

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Abstract

The invention belongs to the field of fiber-reinforced composite materials, and in particular relates to a preparation method and application of a basalt fiber surface nano-coated multi-scale reinforcement. According to the preparation method, functional nanoparticles are added into basalt fibers by using a surface coating method, and the basalt fibers are subjected to surface modification, so that the surfaces of the basalt fibers are successfully coated with the nanoparticles, and the multi-scale reinforcement having a nanoparticle and basalt fiber composite structure is further prepared. After the surfaces of the basalt fibers are coated with the nanoparticles, the wetting property of the basalt fibers is obviously improved, and the roughness of the basalt fibers is obviously increased, so that the interface compatibility between the basalt fibers and a matrix in a composite material is facilitated to be improved, stress concentration is effectively relieved, the interface damage to the composite material is inhibited, and the comprehensive performance of the composite material is further improved.

Description

Technical field [0001] The invention belongs to the field of fiber-reinforced composite materials, and specifically relates to a preparation method and application of a nano-coated multi-scale reinforcement on the surface of basalt fiber. Background technique [0002] Basalt fiber (BF) is an inorganic mineral fiber with a series of excellent advantages such as excellent mechanical properties, high temperature resistance, acid and alkali resistance, and no pollution to the environment. It can be used as a reinforcement to prepare composite materials and can be widely used in aerospace, Military and civilian fields such as construction and agriculture. However, the surface of basalt fiber is smooth and chemically inert. When used as a reinforcement of composite materials, it has poor adhesion and wettability to the matrix, which makes it difficult for basalt fiber to give full play to the advantages of mechanical properties in composite materials. [0003] Coating nano-particles on ...

Claims

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Application Information

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IPC IPC(8): C08K9/06C08K9/04C08K9/02C08K7/10C08K3/36C08J5/06C08L77/02C08L23/06C08L23/12C08L61/06C08L63/00
CPCC08K9/06C08J5/06C08J2323/06C08J2323/12C08J2361/06C08J2363/00C08J2377/02C08K7/10C08K9/02C08K9/08C08L77/02C08L23/06C08L23/12C08L61/06C08L63/00
Inventor 周少锋王军杰赵贵哲王书展刘亚青
Owner ZHONGBEI UNIV
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