Unlock instant, AI-driven research and patent intelligence for your innovation.

Unsaturated polyester resin-based glass fiber reinforced plastic composite material and preparation method thereof

A polyester resin and composite material technology, applied in the field of resin materials, can solve the problems of heavy odor, low applicability and environmental pollution of FRP

Active Publication Date: 2022-07-22
NEW SOLAR TECH GRP CO LTD
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] FRP is a fiber-reinforced plastic. The existing FRP uses glass fiber or its products as a reinforced plastic to reinforce the resin matrix. FRP is widely used in wind power energy, rail transit, pipeline storage tanks, shipbuilding and other fields. It facilitates the daily life of the people, but the crosslinking agent used in the unsaturated polyester resin in the existing unsaturated polyester resin-based FRP is styrene, and because styrene is volatile, the unsaturated polyester resin is used as the The FRP produced by raw materials has a strong smell, and the traditional FRP is filled with a large amount of glass fiber and inorganic fillers, which makes it difficult to dispose of the waste after the aging of FRP, which not only causes waste of resources, but also pollutes the environment. As a reinforcing material, although it is easy to recycle the aging FRP, adding a large amount of organic fibers will lead to a decrease in the mechanical strength of FRP and low applicability

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0027] The preparation method of the unsaturated polyester resin-based glass fiber reinforced plastic composite material of the present invention comprises the following steps:

[0028] (1) Prepare the mold, apply mold release wax evenly to the inside of the mold, spray gel coat to the inside of the mold coated with mold release wax and cure;

[0029] (2) adding inorganic filler, crosslinking agent, curing accelerator and curing agent to the unsaturated polyester resin, stirring evenly to obtain a resin mixture;

[0030] (3) laying the resin mixture of step (2), spidroin modified polylactic acid fiber and furan-modified cellulose fiber into the mold of step (1) according to the lamination method, curing, demoulding to obtain unsaturated Polyester resin-based fiberglass composite material.

[0031] The raw materials of the furan-modified cellulose fibers of the present invention include 60-80% of cellulose fibers, 20-40% of furan compounds and N,N-dimethylformamide solvent in ...

Embodiment 1

[0041] The raw materials of the furan-modified cellulose fibers in this embodiment include 60% cellulose fibers, 40% tetrahydrofuran and N,N-dimethylformamide solvent in terms of mass percentage.

[0042] The preparation method of the furan-modified cellulose fiber comprises the following steps:

[0043] (1) adding tetrahydrofuran to N,N-dimethylformamide solvent, heating up and stirring rapidly to obtain mixed modified liquid;

[0044] (2) adding cellulose fibers to the mixed modification solution of step (1), heating up and stirring for 2 hours, filtering, washing the filter residue with deionized water 3 times, and drying to obtain furan-modified cellulose fibers.

Embodiment 2

[0046] The raw materials of the furan-modified cellulose fibers in this embodiment include 70% cellulose fibers, 30% furan methylamine and N,N-dimethylformamide solvent in terms of mass percentage.

[0047] The preparation method of the furan-modified cellulose fiber comprises the following steps:

[0048] (1) adding furan methylamine in N,N-dimethylformamide solvent, heating up and stirring rapidly to obtain mixed modified liquid;

[0049] (2) adding cellulose fibers to the mixed modification solution of step (1), heating up and stirring for 4 hours, filtering, washing the filter residue with deionized water for 4 times, and drying to obtain furan-modified cellulose fibers

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an unsaturated polyester resin-based glass fiber reinforced plastic composite material, which is prepared from the following raw materials in percentage by mass: 30 to 45 percent of unsaturated polyester resin, 20 to 30 percent of spider silk protein modified polylactic acid fiber, 10 to 20 percent of furan modified cellulose fiber, 5 to 10 percent of inorganic filler, 5 to 10 percent of cross-linking agent, 2 to 3 percent of curing accelerator and 2 to 3 percent of curing agent, in the unsaturated polyester resin-based glass fiber reinforced plastic composite material provided by the invention, unsaturated double bonds on the unsaturated polyester resin and spider silk protein molecules on the spider silk protein modified polylactic acid fibers can be subjected to cycloaddition reaction with furan compounds on the furan modified cellulose fibers; a molecular chain of the unsaturated polyester resin, a molecular chain of the spider silk protein modified polylactic acid fiber and a molecular chain of the furan modified cellulose fiber are mutually entangled to form a network structure, so that the mechanical strength and the mechanical property of the composite material are enhanced.

Description

technical field [0001] The invention relates to the technical field of resin materials, in particular to an unsaturated polyester resin-based glass fiber reinforced plastic composite material and a preparation method thereof. Background technique [0002] FRP is a fiber-reinforced plastic. The existing FRP is a reinforced plastic with glass fiber or its products as a reinforcing material to reinforce the resin matrix. FRP is widely used in wind power energy, rail transit, pipeline storage tanks, shipbuilding and other fields. It is convenient for the daily life of the people. However, the cross-linking agent used in the unsaturated polyester resin in the existing unsaturated polyester resin-based FRP is styrene. Due to the volatility of styrene, unsaturated polyester resin is used as the cross-linking agent. The FRP produced from raw materials has a strong smell, and the traditional FRP is filled with a large amount of glass fibers and inorganic fillers, which makes it diffi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/06C08L67/04C08L1/02
CPCC08L67/06C08L2205/16C08L67/04C08L1/02
Inventor 唐崑陈军张叶飞龚晓波李志明罗良胜
Owner NEW SOLAR TECH GRP CO LTD