Preparation method of fiber reinforced composite

A composite material and fiber reinforced technology, applied in the field of composite materials, can solve problems such as poor adhesion, and achieve the effects of improving filler dispersion, preventing aggregation, and good mechanical properties

Inactive Publication Date: 2020-07-03
CHANGCHUN A&Z SCI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the surface of basalt fiber is very smooth and its surface is chemically inert, the adhesion to the matrix is ​​poor.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A method for preparing a fiber-reinforced composite material, comprising the steps of:

[0026] (1) Put the basalt fiber in an acetone solution, use magnetic stirring for 30 minutes to wash off the surface impurities, and then dry it at a temperature of 50°C for 36 hours after suction filtration;

[0027] (2) Take the dried basalt fiber, add 1mol / L acetic acid, stir at 400 rpm for 90 minutes to disperse the basalt fiber, and then dry it at a temperature of 55°C for 24 hours after suction filtration;

[0028] (3) Take the acid-treated basalt fiber, add ethyl acetate and a coupling agent, stir at 800 rpm for 180 min, and then dry at a temperature of 50° C. for 36 h after suction filtration;

[0029] (4) Take nano-Al 2 o 3 Disperse the particles in deionized water, ultrasonicate at 30Hz for 50min, after the particles are fully dispersed, adjust the pH value to 5.5, then add 4% 3-aminopropyltriethoxysilane and stir at room temperature for 150min at 1500 rpm After modific...

Embodiment 2

[0034] A method for preparing a fiber-reinforced composite material, comprising the steps of:

[0035] (1) Put the basalt fiber in an acetone solution, use magnetic stirring for 40 minutes to wash off the surface impurities, and then dry it at a temperature of 55°C for 30 hours after suction filtration;

[0036] (2) Take the dried basalt fiber, add 1mol / L acetic acid, stir at 500 rpm for 75min to disperse the basalt fiber, and then dry at a temperature of 50°C for 36h after suction filtration;

[0037] (3) Take the acid-treated basalt fiber, add ethyl acetate and a coupling agent, stir at 1000 rpm for 150 min, and then dry at a temperature of 55° C. for 24 h after suction filtration;

[0038] (4) Take nano-Al 2 o 3 Disperse the particles in deionized water, ultrasonicate at 40Hz for 40min, after the particles are fully dispersed, adjust the pH value to 5.7, then add 5% 3-aminopropyltriethoxysilane and stir at room temperature for 135min at 1800 rpm After modification, the p...

Embodiment 3

[0043] A method for preparing a fiber-reinforced composite material, comprising the steps of:

[0044] (1) Put the basalt fiber in an acetone solution, use magnetic stirring for 50 minutes to wash away the surface impurities, and then dry it at a temperature of 55°C for 24 hours after suction filtration;

[0045] (2) Take the dried basalt fiber, add 1mol / L acetic acid, stir at 600 rpm for 60 minutes to disperse the basalt fiber, and then dry it at a temperature of 55°C for 24 hours after suction filtration;

[0046] (3) Take the acid-treated basalt fiber, add ethyl acetate and a coupling agent, stir at 1200 rpm for 120 min, and then dry at a temperature of 55 ° C for 24 h after suction filtration;

[0047] (4) Take nano-Al 2 o 3 Disperse the particles in deionized water, ultrasonicate at 50Hz for 30min, after the particles are fully dispersed, adjust the pH value to 5.8, then add 6% 3-aminopropyltriethoxysilane and stir at 2000rpm / min for 120min at room temperature Modifica...

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Abstract

The invention discloses a preparation method of a fiber reinforced composite, and belongs to the technical field of composites. The method solves the technical problem that fiber reinforced compositesmade of basalt fiber are low in adhesion and tensile resistance. According to the preparation method of the fiber reinforced composite, basalt fiber is subjected to acetic acid pretreatment and jointmodification treatment by a titanate coupling agent and by Al2O3 nanoparticles and a titanate coupling agent. Cut samples of the fiber reinforced composite obtained finally are in a scale of 300.0mm*300.0mm. Under detection by the prior art, the tensile strength of the fiber reinforced composite is over 3500 Mpa which is 7-9 times that of steel, the tensile elastic modulus of the fiber reinforcedcomposite is 23000-43000 Mpa which is higher than that of steel, and the specific strength, i.e. the ratio of strength to density of the material can reach 2000 Mpa/(g/cm3) or above.

Description

technical field [0001] The invention relates to the technical field of composite materials, in particular to a preparation method of fiber-reinforced composite materials. Background technique [0002] Fiber Reinforced Polymer (or Fiber Reinforced Plastic, referred to as FRP) is formed by reinforcing fiber materials, such as glass fiber, carbon fiber, aramid fiber, etc., and matrix materials through winding, molding or pultrusion. composite material. According to different reinforcing materials, common fiber reinforced composites are divided into glass fiber reinforced composites (GFRP), carbon fiber reinforced composites (CFRP) and aramid fiber reinforced composites (AFRP). [0003] With the continuous advancement of science and technology, people pay more and more attention to environmental issues. Adhering to the concept of sustainable green development, sustainable and pollution-free green environmental materials have gradually attracted people's attention. Different fr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C47/08C22C47/02C22C47/04C22C49/06C22C49/14C22C101/06
CPCC22C47/02C22C47/04C22C47/08C22C49/06C22C49/14
Inventor 王辉王杰王永霞
Owner CHANGCHUN A&Z SCI CO LTD
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