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Heat-resistant vinyl ester unsaturated resin and preparation method thereof

A vinyl ester and unsaturated technology, applied in the field of heat-resistant vinyl ester unsaturated resin and its preparation, can solve the problems of difficulty in meeting high temperature corrosion resistance, limited heat resistance and the like, and achieves high temperature corrosion resistance and fast curing speed. , good corrosion resistance

Inactive Publication Date: 2006-07-19
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The vinyl ester unsaturated resin produced by the above method is still difficult to meet the application of some high temperature corrosion resistant occasions due to its limited heat resistance.

Method used

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  • Heat-resistant vinyl ester unsaturated resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (1) Take by weight: 50 parts of bisphenol F type epoxy resin (F-51 epoxy value is 0.51), 15 parts of methacrylic acid, 5 parts of isocyanate, 10 parts of triallyl cyanurate, 19.4 parts of styrene, 0.5 parts of benzyldimethylamine catalyst, 0.05 parts of hydroquinone, and 0.05 parts of paraffin.

[0034] (2) Take 50 parts of bisphenol F-type epoxy resin and place it in a reaction kettle, heat and stir, raise the temperature to 80°C, add 15 parts of methacrylic acid, 0.5 parts of benzyldimethylamine catalyst, and 0.05 parts of hydroquinone (add 1 / 5 of its amount first), and finish adding within 2 hours. Then heat up to 100°C, stir, vacuumize, the vacuum degree is -0.09~-0.1MPa, and react until the acid value is 10±2mgKOH / g (measured every 20 minutes);

[0035] (3) Cool down to 60°C, add 5 parts of isocyanate dropwise to the material, drop it in half an hour, control the temperature not to exceed 80°C, and react for 0.5h to obtain a modified vinyl ester resin;

[0036] (...

Embodiment 2

[0038](1) Take by weight: 50 parts of bisphenol F type epoxy resin (F-51 epoxy value is 0.51), 15 parts of methacrylic acid, 5 parts of isocyanate, 15 parts of triallyl cyanurate, Styrene 14.4 parts, X 2 0.5 part of titanate ionic catalyst, 0.05 part of hydroquinone, and 0.05 part of paraffin.

[0039] (2) Take 50 parts of bisphenol F-type epoxy resin and place it in a reaction kettle, heat and stir, raise the temperature to 80°C, add 15 parts of methacrylic acid, 0.5 parts of X 2 Titanate ionic catalyst, 0.05 part of hydroquinone (add 1 / 5 of its amount first), and finish adding within 2 hours. Then heat up to 100°C, stir, vacuumize, the vacuum degree is -0.09~-0.1MPa, and react until the acid value is 10±2mgKOH / g (measured every 20 minutes);

[0040] (3) Cool down to 60°C, add 5 parts of isocyanate dropwise to the material, drop it in half an hour, control the temperature not to exceed 80°C, and react for 0.5h to obtain a modified vinyl ester resin;

[0041] (4) In the dil...

Embodiment 3

[0043] (1) Take by weight: 50 parts of bisphenol F type epoxy resin (F-51 epoxy value is 0.51), 15 parts of methacrylic acid, 5 parts of isocyanate, 25 parts of triallyl cyanurate, 2.4 parts of styrene, X 3 0.5 part of titanate ionic catalyst, 0.05 part of hydroquinone, and 0.05 part of paraffin.

[0044] (2) Take 50 parts of bisphenol F-type epoxy resin and place it in a reaction kettle, heat and stir, raise the temperature to 80°C, add 15 parts of methacrylic acid, 0.5 parts of X 3 Titanate ionic catalyst, 0.05 parts of hydroquinone (1 / 5 of the amount added first), and the addition is completed within 2 hours. Then heat up to 100°C, stir, vacuumize, the vacuum degree is -0.09~-0.1MPa, and react until the acid value is 10±2mgKOH / g (measured every 20 minutes);

[0045] (3) Cool down to 60°C, add 5 parts of isocyanate dropwise to the material, drop it in half an hour, control the temperature not to exceed 80°C, and react for 0.5h to obtain a modified vinyl ester resin;

[00...

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Abstract

The invention relates to a heat resistant vinyl esters unsaturated resin and process for preparation, wherein the heat resistant vinyl esters unsaturated resin comprises (by weight portion) bisphenol type F epoxy resin 15-50, methacrylic acid or acrylic acid 5-25, isocyanate 3-10, catalyst 0.1-1, polymerization inhibitor 0.01-0.1, deflocculating agent 5-35, wherein the deflocculating agent is the mixture of triallyl cyanurate with any of phenylethene, vinyltoluene, and dicyclopentadiene acrylic acid ester. The product is prepared through the steps of synthesizing, modifying and diluting.

Description

technical field [0001] The invention relates to the field of chemical anticorrosion raw materials, in particular to a heat-resistant vinyl ester unsaturated resin and a preparation method thereof. Background technique [0002] Vinyl ester unsaturated resin refers to a type of unsaturated polyester with vinyl groups at both ends of the molecule and epoxy resin as the middle skeleton. It is a new type of resin developed in the 1960s abroad. They are obtained by the ring-opening esterification reaction of unsaturated organic monocarboxylic acid such as acrylic acid or methacrylic acid and epoxy resin, so they can also be called unsaturated acid epoxy ester. The unique molecular structure of this vinyl ester unsaturated resin makes it have the advantages of both unsaturated polyester resin and epoxy resin: on the one hand, it is similar to unsaturated polyester resin, has lower viscosity, and is easy to process and shape. Under the action of the initiator, through free radical ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F124/00
Inventor 黄志雄张联盟秦岩梅启林彭永利
Owner WUHAN UNIV OF TECH
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