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High-temperature thickening vinyl resin and preparation method thereof

A vinyl resin, high temperature technology, applied in the field of high temperature thickening vinyl resin and its preparation, can solve the problems of difficult molding process, poor thickening performance of high temperature resistant vinyl resin, etc.

Pending Publication Date: 2022-04-22
JIANGSU BOHONG NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are a small number of ordinary vinyl resins on the market that can meet the molding process requirements of sheet molding compounds and reinforced thermosetting plastics. Due to their poor thickening performance, high temperature resistant vinyl resins are difficult to use in this molding process.

Method used

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  • High-temperature thickening vinyl resin and preparation method thereof
  • High-temperature thickening vinyl resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A high-temperature thickening vinyl resin, mainly including: 55 parts of modified epoxy resin, 24 parts of unsaturated monocarboxylic acid, 0.1 part of polymerization inhibitor, 0.06 part of catalyst, 8 parts of self-made thickening agent, 3 parts calcium carbonate.

[0038] A kind of preparation method of high temperature thickening vinyl resin, the preparation method of described high temperature thickening vinyl resin mainly comprises the following preparation steps:

[0039] (1) Under nitrogen protection and 0°C, mix sebacoyl chloride and dichloromethane at a volume ratio of 1:1 to obtain a sebacoyl chloride solution. Propylene glycol with a mass of 0.95 times the mass of sebacoyl chloride and sebacoyl chloride with a mass of 5.54 times of dichloromethane and 0.87 times of the mass of sebacoyl chloride were mixed with anhydrous potassium carbonate to obtain a propylene glycol solution, and the sebacoyl chloride solution was added dropwise to the propylene glycol sol...

Embodiment 2

[0052] A high-temperature thickening vinyl resin, mainly including: 55 parts of modified epoxy resin, 24 parts of unsaturated monocarboxylic acid, 0.1 part of polymerization inhibitor, 0.06 part of catalyst, 8 parts of self-made thickening agent, 3 parts calcium carbonate.

[0053] A kind of preparation method of high temperature thickening vinyl resin, the preparation method of described high temperature thickening vinyl resin mainly comprises the following preparation steps:

[0054](1) Mix the carbon nanotubes, epoxy resin and acetone in the flask according to the mass ratio of 1:20:20, stir with a homodisperser at a speed of 15000rpm for 1h at room temperature, and then ultrasonically disperse at a frequency of 20kHz for 2h , after heating and evaporating the mixture at 120°C for 30 minutes, distilling under reduced pressure for 2 hours to obtain a modified epoxy resin;

[0055] (2) At 0°C, put n-octylacetophenone, methanol with 17.04 times the mass of n-octylacetophenone...

Embodiment 3

[0062] A high-temperature thickening vinyl resin, mainly comprising: 55 parts of epoxy resin, 24 parts of unsaturated monocarboxylic acid, 0.1 part of polymerization inhibitor, 0.06 part of catalyst, 8 parts of self-made thickener in parts by weight, 3 parts calcium carbonate.

[0063] A kind of preparation method of high temperature thickening vinyl resin, the preparation method of described high temperature thickening vinyl resin mainly comprises the following preparation steps:

[0064] (1) At 0°C, put n-octylacetophenone, methanol with 17.04 times the mass of n-octylacetophenone, and sodium borohydride with 9.77 times the mass of n-octylacetophenone in a beaker, and heat the temperature to 60°C, react for 2 hours, filter to obtain the filtrate containing n-octylbenzyl alcohol, and rotate the filtrate containing n-octylbenzyl alcohol for 20 minutes to obtain l-methyl-p-n-octylbenzyl alcohol;

[0065] (2) p-toluenesulfonic acid monohydrate, l-methyl p-n-octylbenzyl alcohol ...

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PUM

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Abstract

The invention discloses a high-temperature thickening vinyl resin and a preparation method thereof. The preparation method comprises the following steps: firstly, respectively reacting sebacyl chloride and fumaryl chloride with propylene glycol, and then polymerizing the two reactants to prepare poly (dihydroxypropyl fumarate); the preparation method comprises the following steps: modifying a carbon nanotube by using a poly (dihydroxypropyl fumarate) copolymer, preparing modified epoxy resin from the modified carbon nanotube and epoxy resin, and preparing a self-made thickening agent from carboxymethyl cellulose and p-n-octylstyrene. And finally, mixing the modified epoxy resin, unsaturated monobasic acid, a polymerization inhibitor, a catalyst, a self-made thickening agent and calcium carbonate according to the formula ratio to prepare the high-temperature thickening vinyl resin. The high-temperature thickening vinyl resin prepared by the invention has excellent heat resistance and thickening property.

Description

technical field [0001] The invention relates to the technical field of resin composite materials, in particular to a high-temperature thickening vinyl resin and a preparation method thereof. Background technique [0002] Vinyl resin is made by reacting epoxy resin with unsaturated acid, which not only has the mechanical properties similar to epoxy resin, but also has the technical properties of unsaturated ester. Because vinyl resin has sufficient mechanical strength and rigidity, heat cycle resistance, and corrosion resistance, it better meets the requirements of high-quality products. Therefore, the use of vinyl resin as a material has become a development trend. How to realize the characteristics of high temperature resistance and good thickening of vinyl resin without reducing the mechanical properties of vinyl resin will be of great significance to the development of vinyl resin. [0003] At present, vinyl resins are produced by manufacturers at home and abroad, but th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/10C08L1/28C08K9/04C08K3/04C08K3/26C08G59/16
CPCC08L63/10C08G59/1461C08K2003/265C08L2207/02C08L1/286C08K9/08C08K3/041C08K3/26
Inventor 陈伟杨勇周焱
Owner JIANGSU BOHONG NEW MATERIAL TECH