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Unsaturated polyester resin material for glass fiber reinforced plastic pipeline and preparation method of unsaturated polyester resin material

A polyester resin and unsaturated technology is applied in the field of unsaturated polyester resin materials for glass fiber reinforced plastic pipes and their preparation, which can solve the problems of affecting the quality of continuously wound glass fiber reinforced plastic pipes, unable to fully utilize continuous winding equipment, and poor mechanical properties of pipes, etc. To achieve the effect of facilitating continuous winding, improving elasticity, and improving interface bonding strength

Active Publication Date: 2022-07-22
NEW SOLAR TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Unsaturated polyester resin is a polyester polymer with unsaturated bonds in the molecular chain. It is a thermosetting resin. The existing production of wound FRP pipes is mainly to produce fixed-length wound FRP pipes. If the production automation is higher The continuous winding of FRP pipes will lead to low production efficiency due to the slow curing of unsaturated polyester resin. At the same time, the mechanical properties of pipes made of traditional unsaturated polyester resin materials are poor, and the advantages of continuous winding equipment cannot be fully utilized, which affects continuous winding. The quality of FRP pipes

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0026] The preparation method of the unsaturated polyester resin material for FRP pipes of the present invention comprises the following steps:

[0027] (1) Mix the unsaturated polyester resin base material with the natural latex and stir quickly, then add the flame retardant, stir for 1-2 hours, and finally add styrene and stir evenly to obtain a resin mixture;

[0028] (2) adding the ionic liquid modified carbon fiber and the curing accelerator into the resin mixture of step (1), stirring and mixing to obtain the mixture;

[0029] (3) Pour the mixture of step (2) into the material trough of the winding machine, add modified waste circuit board powder, thixotropic agent and curing agent, and enter the mold for high temperature curing through the weaving and winding pultrusion process of the winding machine. Forming, cooling to room temperature to obtain unsaturated polyester resin material for glass fiber reinforced plastic pipes.

[0030] The raw materials of the modified w...

Embodiment 1

[0038] The raw materials of the modified waste circuit board powder in this embodiment, in terms of mass percentage, include 60% waste circuit board powder, 40% vinyltriethoxysilane and an aqueous ethanol solution.

[0039] The preparation method of the modified waste circuit board powder comprises the following steps:

[0040] (1) vinyltriethoxysilane is added to the ethanol aqueous solution, heat up and stir rapidly to obtain mixed modified liquid;

[0041] (2) adding the waste circuit board powder 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 the modified waste circuit board powder.

Embodiment 2

[0043] The raw materials of the modified waste circuit board powder in this embodiment, in terms of mass percentage, include 70% waste circuit board powder, 30% vinyltrimethoxysilane and an aqueous ethanol solution.

[0044]The preparation method of the modified waste circuit board powder comprises the following steps:

[0045] (1) vinyltrimethoxysilane is added to the ethanol aqueous solution, heats up and stirs rapidly to obtain a mixed modified liquid;

[0046] (2) adding the waste circuit board powder to the mixed modification solution of step (1), heating up and stirring for 4h, filtering, washing the filter residue with deionized water 4 times, and drying to obtain the modified waste circuit board powder

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PUM

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Abstract

The invention discloses an unsaturated polyester resin material for a glass fiber reinforced plastic pipeline. Comprising the following raw materials: 20-30% of an unsaturated polyester resin base material, 20-30% of natural latex, 10-15% of modified waste circuit board powder, 10-30% of ionic liquid modified carbon fiber, 5-20% of styrene, 8-12% of a flame retardant, 4-6% of a thixotropic additive, 2-3% of a curing accelerator and 2-3% of a curing agent. In the unsaturated polyester resin material for the glass fiber reinforced plastic pipeline provided by the invention, when the unsaturated polyester resin base material and the natural latex are cured at the same time, molecular chains can be crosslinked together to form a continuous network structure, and the molecular chains of the unsaturated polyester resin base material and the molecular chains of the natural latex are mutually entangled to form a whole; meanwhile, conjugated double bonds can be formed among cations in the ionic liquid on the ionic liquid modified carbon fiber, resin molecules and natural latex molecules, so that the mechanical property of the composite material is improved.

Description

technical field [0001] The invention relates to the technical field of resin materials, in particular to an unsaturated polyester resin material for glass fiber reinforced plastic pipes and a preparation method thereof. Background technique [0002] In the current urban drainage pipe system in China, winding FRP pipes have gradually replaced concrete pipes, reinforced cement pipes, cast iron pipes and plastic winding pipes. Winding FRP pipes have the advantages of excellent corrosion resistance, good strength, anti-aging, light weight and high strength. The main raw material of FRP pipes is glass fiber reinforced unsaturated polyester, which has developed rapidly due to its high strength and convenient processing. Unsaturated polyester resin is a polyester polymer with unsaturated bonds in the molecular chain. It is a thermosetting resin. The existing production of FRP pipes mainly focuses on the production of fixed-length FRP pipes. If the degree of production automation is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/06C08L7/02C08L101/00C08K9/04C08K7/06C08K5/14C08K5/3492C08K3/32
CPCC08L67/06C08L7/02C08K2003/323C08L101/00C08K9/04C08K7/06C08K5/14C08K5/34922C08K3/32Y02P20/54
Inventor 罗良胜李志明陈军张叶飞龚晓波唐崑
Owner NEW SOLAR TECH GRP CO LTD