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Low-contraction unsaturated polyester resin used for pultrusion and preparation method thereof

A polyester resin and unsaturated technology, which is applied in the field of unsaturated polyester resin for low-shrinkage pultrusion and its preparation, can solve the problems of low reactivity and unsuitable resin materials for pultrusion molding process, etc., and achieve high reactivity, The effect of outstanding mechanical properties and low shrinkage

Inactive Publication Date: 2016-06-15
ZIBO LUKAI RESIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the technical defects of the prior art, and provides a low-shrinkage unsaturated polyester resin for pultrusion and its preparation method, so as to solve the technical problem that the resin material of the prior art is not suitable for the pultrusion molding process
[0006] Another technical problem to be solved by the present invention is that the resin material used for pultrusion in the prior art has low reactivity

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A low-shrinkage unsaturated polyester resin for pultrusion, which is prepared from the following components by weight: 300 parts of demineralized water, 2000 parts of the first maleic anhydride, 1500 parts of dicyclopentadiene, 800 parts of phthalic anhydride, 1000 parts of second maleic anhydride, 600 parts of propylene glycol, 300 parts of ethylene glycol, 1000 parts of diethylene glycol, 2100 parts of styrene, 1 part of methyl hydroquinone, antioxidant 1 part, 0.01 part of retarder.

[0029] The preparation method of above-mentioned low-shrinkage pultrusion unsaturated polyester resin comprises the following steps:

[0030] 1) Take the demineralized water of formula quantity and the first maleic anhydride and mix in container, then drop the dicyclopentadiene of formula quantity in container;

[0031] 2) Take the formulated amount of phthalic anhydride, second maleic anhydride, propylene glycol, ethylene glycol, diethylene glycol, styrene, methyl hydroquinone, antiox...

Embodiment 2

[0038] A low-shrinkage unsaturated polyester resin for pultrusion, which is prepared from the following components by weight: 400 parts of demineralized water, 3000 parts of the first maleic anhydride, 2000 parts of dicyclopentadiene, 1500 parts of phthalic anhydride, 1500 parts of second maleic anhydride, 1300 parts of propylene glycol, 800 parts of ethylene glycol, 1500 parts of diethylene glycol, 3100 parts of styrene, 5 parts of tert-butylcatechol, antioxidant 5 parts of agent, 0.08 part of retarder.

[0039] The preparation method of above-mentioned low-shrinkage pultrusion unsaturated polyester resin comprises the following steps:

[0040] 1) Take the demineralized water of formula quantity and the first maleic anhydride and mix in container, then add the dicyclopentadiene of formula quantity in container;

[0041] 2) Take the formulated amount of phthalic anhydride, second maleic anhydride, propylene glycol, ethylene glycol, diethylene glycol, styrene, tert-butylcatech...

Embodiment 3

[0048] A low-shrinkage unsaturated polyester resin for pultrusion, which is prepared from the following components by weight: 350 parts of demineralized water, 2500 parts of the first maleic anhydride, 1750 parts of dicyclopentadiene, 1150 parts of phthalic anhydride, 1250 parts of second maleic anhydride, 950 parts of propylene glycol, 5500 parts of ethylene glycol, 1250 parts of diethylene glycol, 2600 parts of styrene, 3 parts of hydroquinone, antioxidant 3 parts, 0.05 part of retarder.

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PUM

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Abstract

The invention provides low-contraction unsaturated polyester resin used for pultrusion and a preparation method thereof. According to the invention, a polyester resin formula is obtained through experiment means, the low-contraction unsaturated polyester resin having excellent performance is prepared by taking the formula component as a raw material and using a conventional resin preparation method, the resin product has the advantages of high reaction activity, good heat stability, outstanding mechanical property after solidification is carried out, and low contraction rate, and is especially suitable for rapid pultrusion of a composite material section bar and a wire rod. On this base, the method is especially suitable for the preparation of the resin product, process thought is intelligible, the preparation is simple, and the preparation efficiency of the product is obviously increased. The innovative technological improvement realizes the outstanding technical effect, cost is low, realization is easy, and the method has outstanding popularization prospect.

Description

technical field [0001] The invention relates to the technical field of preparation based on chemical engineering principles, in particular to a low-shrinkage unsaturated polyester resin for pultrusion and a preparation method thereof. Background technique [0002] The pultrusion process is a method of continuously producing composite material profiles. This method is usually to shape and solidify continuous glass fiber bundles, belts or cloth impregnated with resin glue through extrusion dies under the action of traction, so as to continuously Production of FRP profiles of unlimited length. This process is especially suitable for the production of FRP profiles of various cross-sectional shapes, such as rods, tubes, solid profiles and hollow profiles. [0003] The main raw materials to complete the pultrusion process include resin matrix, reinforcing materials and auxiliary materials. Among them, the resin matrix is ​​used in a large amount and is used as a component of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F283/01C08G63/676
CPCC08F283/01C08G63/676C08F212/08
Inventor 曹茂强
Owner ZIBO LUKAI RESIN