Unsaturated polyester resin for polyester concrete and preparation method of unsaturated polyester resin

A polyester concrete and polyester resin technology, applied in the chemical industry, can solve the problems of long post-curing time, low reactivity, and high cost, and achieve the effects of shortening the curing time, increasing the molecular weight, and preventing oxidation

Inactive Publication Date: 2015-01-28
YONGYUE SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The application fields of unsaturated polyester resin are very wide, and different processes have different requirements on the performance of the resin. General-purpose unsaturated polyester resin has the characteristics of high viscosity, low reactivity, long post-curing time, and high cost.

Method used

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  • Unsaturated polyester resin for polyester concrete and preparation method of unsaturated polyester resin
  • Unsaturated polyester resin for polyester concrete and preparation method of unsaturated polyester resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The preparation formula of the polyester concrete unsaturated polyester resin of present embodiment one is:

[0025] 550 parts by weight of phthalic anhydride, 8500 parts by weight of recycled PET flakes, 3300 parts by weight of maleic anhydride, 500 parts by weight of benzoic acid, 750 parts by weight of 1,2 propylene glycol, 200 parts by weight of ethylene glycol, 3800 parts by weight of polyol, 6500 parts by weight of styrene part, 2 parts by weight of polymerization inhibitor, 3 parts by weight of antioxidant, 2 parts by weight of paraffin, 3 parts by weight of alcoholysis aid, 0.1 part by weight of copper naphthenate, 0.5 part by weight of hydroquinone.

[0026] In Example 1, the recycled grade PET flakes are obtained by pulverizing discarded pure PET beverage bottle flakes; the polymerization inhibitor is 2 parts by weight of p-benzoquinone; the antioxidant is 3 parts by weight of triphosphite Phenyl ester; the alcoholysis aid is 3 parts by weight of stannous chlo...

Embodiment 2

[0033] The preparation formula of the polyester concrete unsaturated polyester resin of present embodiment two is:

[0034] 580 parts by weight of phthalic anhydride, 8600 parts by weight of recycled PET flakes, 3250 parts by weight of maleic anhydride, 520 parts by weight of benzoic acid, 700 parts by weight of 1,2 propylene glycol, 230 parts by weight of ethylene glycol, 3850 parts by weight of polyol, 6500 parts by weight of styrene part, 4 parts by weight of a polymerization inhibitor, 1 part by weight of an antioxidant, 2 parts by weight of paraffin, 4 parts by weight of an alcoholysis aid, 0.3 parts by weight of copper naphthenate, and 0.3 parts by weight of hydroquinone.

[0035] In embodiment two, the recycled grade PET flakes are obtained by pulverizing discarded pure PET beverage bottle flakes; the polymerization inhibitor is 2 parts by weight of p-benzoquinone and 2 parts by weight of hydroquinone; the antioxidant is The triphenyl phosphite of 1 weight part; Describ...

Embodiment 3

[0042] The preparation formula of the polyester concrete unsaturated polyester resin of present embodiment three is:

[0043] 600 parts by weight of phthalic anhydride, 8600 parts by weight of recycled PET flakes, 3250 parts by weight of maleic anhydride, 520 parts by weight of benzoic acid, 750 parts by weight of 1,2 propylene glycol, 230 parts by weight of ethylene glycol, 3800 parts by weight of polyol, 6600 parts by weight of styrene part, 4 parts by weight of polymerization inhibitor, 2 parts by weight of antioxidant, 1 part by weight of paraffin, 4 parts by weight of alcoholysis aid, 0.2 part by weight of copper naphthenate, 0.5 part by weight of hydroquinone.

[0044] In embodiment three, the recycled grade PET flakes are obtained by pulverizing discarded pure PET beverage bottle flakes; the polymerization inhibitor is 4 parts by weight of hydroquinone; the antioxidant is 2 parts by weight of triphenyl phosphite ester; the alcoholysis aid is 3 parts by weight of zinc ac...

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Abstract

The invention particularly discloses unsaturated polyester resin for polyester concrete. The unsaturated polyester resin has a formula comprising the following components: phthalic anhydride, maleic anhydride, recoverable-grade PET flakes, 1,2 propanediol, ethylene glycol, polyhydric alcohol, benzoic acid, styrene, a polymerization inhibitor, an antioxidant, paraffin, an alcoholysis aid, copper naphthenate and p-benzenediol. The invention further discloses a preparation method of the unsaturated polyester resin which is prepared through an alcoholysis reaction, a condensation reaction and a dilution process. Compared with the prior art, the unsaturated polyester resin disclosed by the invention is low in viscosity, high in reaction activity, short in post-curing time, resistant to acid, alkali and water, and excellent in mechanical property, further, the recoverable-grade PET flakes are adopted, therefore, the cost is greatly reduced, and the production period is shortened.

Description

technical field [0001] The invention relates to the technical field of chemical industry, in particular to an unsaturated polyester resin for polyester concrete and a preparation method thereof. Background technique [0002] Unsaturated polyester resin (Unsaturated Polyester Resins, referred to as UPR) is a linear polymer compound with multifunctional groups. It has polyester chain bonds and unsaturated double bonds on its main chain, and each end of the macromolecular chain With carboxyl and hydroxyl. The biggest advantage of using unsaturated polyester resin is that its diluent (styrene) will undergo copolymerization and crosslinking reaction with the double bonds on the main chain when it is finally used, forming a spatial network structure with better mechanical properties. When the number of moles of unsaturated bonds in polyester increases, the activity of the reaction will increase and the strength of the product will increase. [0003] Polyester concrete, also know...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F283/01C08G63/91C08G63/52C08G63/78C08J11/24
CPCY02W30/62
Inventor 徐伟达程剑平冯澜秦丛生陈志山
Owner YONGYUE SCI & TECH
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