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Preparation method of dopamine modified glass fiber-epoxy resin composite material

A technology of glass fiber and epoxy resin, which is applied in the field of composite material preparation, can solve problems such as research involving few reports, and achieve the effects of low cost, uniform shape distribution, and controllable thickness

Active Publication Date: 2019-07-30
SOUTHWEAT UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the research on the application of dopamine in the biological field is relatively extensive, there are few reports on the research in the field of glass fiber and composite materials.

Method used

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  • Preparation method of dopamine modified glass fiber-epoxy resin composite material
  • Preparation method of dopamine modified glass fiber-epoxy resin composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A preparation method of dopamine modified glass fiber-epoxy resin composite material, comprising the following steps:

[0029] Step 1. Prepare a dopamine hydrochloric acid solution with a concentration of 3 mg / mL, adjust the pH to 8, then soak the glass fiber in the dopamine hydrochloric acid solution, shake it in the dark for 12 hours, then wash the glass fiber and dry it at 30°C to obtain dopamine-modified Sexual glass fiber; the mass volume ratio of the glass fiber to the dopamine hydrochloric acid solution glass fiber is 1:5;

[0030] Step 2. Add 50 parts of bisphenol A epoxy resin and 10 parts of dopamine-modified glass fiber into the mixer in parts by weight, and mix for 30 minutes at 50°C at a speed of 1000 revolutions per minute. The mixed material Using an extruder to melt and extrude to granulate, the heating temperature is 200° C., and the extruding temperature of the head is 210° C. to obtain a composite material.

Embodiment 2

[0032] A preparation method of dopamine modified glass fiber-epoxy resin composite material, comprising the following steps:

[0033] Step 1. Prepare a dopamine hydrochloric acid solution with a concentration of 10 mg / mL, adjust the pH to 10, then soak the glass fibers in the dopamine hydrochloric acid solution, shake in the dark for 48 hours, then wash the glass fibers and dry them at 40°C; Sexual glass fiber; the mass volume ratio of the glass fiber to the dopamine hydrochloric acid solution glass fiber is 1:10;

[0034]Step 2. In parts by weight, add 100 parts of bisphenol A epoxy resin and 30 parts of dopamine-modified glass fiber into the mixer, and mix for 30 minutes at 60°C at a speed of 1200 revolutions per minute. The mixed material Using an extruder to melt and extrude to granulate, the heating temperature is 235° C., and the extruding temperature of the head is 220° C. to obtain a composite material.

Embodiment 3

[0036] A preparation method of dopamine modified glass fiber-epoxy resin composite material, comprising the following steps:

[0037] Step 1. Prepare a dopamine hydrochloric acid solution with a concentration of 8 mg / mL, adjust the pH to 9, then soak the glass fiber in the dopamine hydrochloric acid solution, shake it in the dark for 24 hours, then wash the glass fiber and dry it at 35°C to obtain dopamine-modified Sexual glass fiber; the mass volume ratio of the glass fiber to the dopamine hydrochloric acid solution glass fiber is 1:8;

[0038] Step 2: In parts by weight, add 80 parts of bisphenol A epoxy resin and 20 parts of dopamine-modified glass fiber into the mixer, mix at 55°C for 30 minutes at a speed of 1100 revolutions per minute, and the mixed material Using an extruder to melt and extrude to granulate, the heating temperature is 220° C., and the extruding temperature of the head is 215° C. to obtain a composite material.

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Abstract

The invention discloses a preparation method of a dopamine-modified glass fiber-epoxy resin composite material. The preparation method comprises preparing a dopamine hydrochloride solution, adjusting pH, immersing glass fibers into the dopamine hydrochloride solution, carrying out shaking in dark, cleaning the glass fibers, carrying out drying and blending the dopamine-modified glass fibers and epoxy resin to obtain the composite material. The preparation method adopts dopamine to modify the surfaces of glass fibers. The dopamine polymerization conditions are simple and the environment is mild. The dopamine on the surfaces of the modified glass fibers has uniform morphological distribution and controllable thickness. The dopamine self-polymerization process is simple, is easy to operate, has good reproducibility, realizes a low cost and realizes large-scale modification and application of the glass fibers. Through effective combination of the dopamine function group and the epoxy resin composite material, the dopamine-modified glass fiber-epoxy resin composite material having high performances is prepared.

Description

technical field [0001] The invention relates to a preparation method of a composite material, in particular to a preparation method of a dopamine-modified glass fiber-epoxy resin composite material. Background technique [0002] Glass fiber reinforced composite material is a composite material made of polymer as matrix and glass fiber as reinforcement material, which combines the properties of polymer and glass fiber. Glass fiber reinforced composites are classified according to the length of the fibers and can be divided into long fiber composites and short fiber composites. Glass fiber can be divided into alkali-free aluminoborosilicate (referred to as alkali-free fiber) and alkali-free borosilicate (referred to as medium-alkali fiber) according to its chemical composition. Glass fiber can be used to strengthen thermoplastics such as ABS, PP, PET, PA, etc., and can also be widely used to strengthen thermosetting plastics such as epoxy resin and phenolic resin. [0003] A...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L63/00C08L51/02C08L51/00C08L51/06C08K13/06C08K9/04C08K7/14C08K5/39C08K5/57C08K5/20C08J5/08
CPCC08J5/08C08J2363/00C08K7/14C08K9/04C08L63/00C08L2205/035C08L51/02C08L51/003C08L51/06C08K13/06C08K5/39C08K5/57C08K5/20Y02P20/54
Inventor 张红平侯佳良张亚萍唐苹苹林晓艳周建
Owner SOUTHWEAT UNIV OF SCI & TECH
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