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Flexible unsaturated polyester resin

A polyester resin, unsaturated technology, used in the field of flexible unsaturated polyester resin, can solve the problems of low elongation at break, poor impact resistance, limited application range, etc., and achieve high elongation at break and gel time. Short, wide-ranging effects

Inactive Publication Date: 2018-01-12
TIANSHOU FUJIAN SUPERFIBER TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] (3) However, there are also some problems in the existing unsaturated polyester resins. For example, the hardness of unsaturated polyester resins after curing is relatively high, usually around 40 Barcol hardness, and the elongation at break is low, usually only 5%. Moreover, the impact resistance is poor, which greatly limits its application range.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A kind of flexible unsaturated polyester resin proposed by the present invention comprises the following raw materials in parts by weight: 88 parts of isophthalic acid, 73 parts of polyether glycol, 8 parts of carboxyl-terminated nitrile rubber, and 5 parts of phenyl sulfonate 14 parts of nano-calcium carbonate, 2 parts of tert-butyl hydroquinone, 1.2 parts of dilauryl thiodipropionate, 0.1 part of monobutyl tin oxide, 1.5 parts of methyl ethyl ketone peroxide-cobalt isooctanoate system, cis-butyl 0.4 parts of olefinic anhydride.

[0021] Its preparation method comprises the following steps:

[0022] S1: Add corresponding parts by weight of isophthalic acid, polyether glycol and monobutyltin oxide into the reactor with a dripping device, and add the methyl ethyl ketone peroxide-cobalt isooctanoate system into the dripping device , close the communication valve between the dripping device and the reactor, open the heating and stirring device of the reactor, wait for the...

Embodiment 2

[0026] A kind of flexible unsaturated polyester resin proposed by the present invention comprises the following raw materials in parts by weight: 96 parts of phthalic acid, 88 parts of polyether glycol, 10 parts of carboxyl-terminated nitrile rubber, 5 parts of phenyl sulfonate 16 parts of nano-calcium carbonate, 3 parts of tert-butyl hydroquinone, 2 parts of dilauryl thiodipropionate, 0.05 parts of monobutyl tin oxide, 1.6 parts of methyl ethyl ketone peroxide-cobalt isooctanoate system, cis-butyl 0.5 parts of olefinic anhydride.

[0027] Its preparation method comprises the following steps:

[0028] S1: Add corresponding weight parts of phthalic acid, polyether glycol and monobutyltin oxide into the reactor with a dripping device, and add the methyl ethyl ketone peroxide-cobalt isooctanoate system into the dripping device , close the communication valve between the dripping device and the reactor, open the heating and stirring device of the reactor, wait for the temperature...

Embodiment 3

[0032] A kind of flexible unsaturated polyester resin proposed by the present invention comprises the following raw materials in parts by weight: 80 parts of isophthalic acid, 88 parts of polyether glycol, 10 parts of carboxyl-terminated nitrile rubber, 3 parts of phenyl sulfonate 12 parts of nano-calcium carbonate, 2 parts of tert-butyl hydroquinone, 1 part of dilauryl thiodipropionate, 0.1 part of monobutyl tin oxide, 1.3 parts of methyl ethyl ketone peroxide-cobalt isooctanoate system, cis-butyl 0.4 parts of olefinic anhydride.

[0033] Its preparation method comprises the following steps:

[0034] S1: Add corresponding parts by weight of isophthalic acid, polyether glycol and monobutyltin oxide into the reactor with a dripping device, and add the methyl ethyl ketone peroxide-cobalt isooctanoate system into the dripping device , close the communication valve between the dripping device and the reactor, open the heating and stirring device of the reactor, wait for the tempe...

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PUM

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Abstract

The invention discloses a flexible unsaturated polyester resin, which is prepared from the following raw materials in parts by weight: 79 to 96 parts of unsaturated acid, 64 to 88 parts of polyether glycol, 5 to 10 parts of terminal carboxyl nitrile butadiene rubber, 3 to 8 parts of phenyl alkyl sulfonate, 12 to 16 parts of nano calcium carbonate, 1 to 3 parts of tertiary butylhydroquinone, 0.5 to2 parts of dilauryl thiodipropionate, 0.05 to 0.15 part of monobutyltin oxide, 1.3 to 1.6 parts of methyl ethyl ketone peroxide-cobalt iso-octoate system, and 0.3 to 0.6 part of catalyst. The invention provides the flexible unsaturated polyester resin, which has good flexibility, low hardness, high breaking elongation, high shock resistance and a wide application range; the invention also provides a preparation method of the flexible unsaturated polyester resin; the preparation method is simple, the gelation time is short, and a reaction process is easy to control.

Description

technical field [0001] The invention relates to the technical field of synthetic materials, in particular to a flexible unsaturated polyester resin. Background technique [0002] Unsaturated polyester resin is a kind of resin developed during World War II. After the war, unsaturated polyester resin rapidly expanded to the civilian field and spread to countries all over the world. As a thermosetting resin, unsaturated polyester resin has the following advantages: [0003] (1) Low price and good process performance. It has a suitable viscosity at room temperature, can be cured at room temperature, and can be molded under normal pressure. There is no small molecule formation during the curing process, so the construction is convenient; [0004] (2) After curing, the comprehensive performance of the resin is good and the application range is wide. There are many types of unsaturated polyester resins. According to different application requirements, different types of unsatura...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/672C08G63/676C08L67/02C08L67/06C08L13/00C08K5/42C08K3/26C08K5/13C08K5/372C08K13/02
Inventor 蔡裕泰蔡天守
Owner TIANSHOU FUJIAN SUPERFIBER TECH
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