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Modified epoxy vinyl resin for low-shrinkage concrete and preparation method thereof

A technology of epoxy vinyl resin and epoxy resin, which is applied in the field of concrete, can solve the problems of low shrinkage, sticky surface layer, stability and poor weather resistance, so as to improve weather resistance, increase filling rate and reduce curing shrinkage rate effect

Active Publication Date: 2019-10-15
江苏金苏泽工程技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And it has good low shrinkage. Compared with the shrinkage rate of 6% to 8% of general fumarene vinyl resin and 1% to 3% of epoxy resin, the shrinkage rate of epoxy vinyl ester resin is only 0.5%, but when the epoxy vinyl ester resin is copolymerized, it is easy to produce stickiness on the surface layer in contact with the air, and its stability and weather resistance are poor
For the harsh use environment of concrete, the application of epoxy vinyl ester resin has strong inapplicability

Method used

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  • Modified epoxy vinyl resin for low-shrinkage concrete and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment example 1

[0063] 1) Preparation of modified epoxy resin

[0064] Weigh hydrogenated epoxy resin and bisphenol A epoxy resin in proportion (hydrogenated bisphenol A epoxy resin: bisphenol A diglycidyl ether=1:2, mass component ratio, 15 parts in total), join in Heat the reaction kettle to 100°C, and add catalyst A (0.01 parts of sodium titanate) and part of the crosslinking agent (8 parts of styrene) according to the mass components at the same time, control the pH value of the reaction system to 7.6, and fully react under this condition 20 minutes;

[0065] 2) Preparation of modified epoxy vinyl resin

[0066] The reaction temperature of the modified epoxy epoxy resin reaction kettle of step 1 is continuously cooled and the control temperature is 55°C, and the polymerization inhibitor (0.05 part of hydroquinone), initiator (0.01 part of triphenylsilanol-aluminum ethyl triacetoacetate), catalyst B (0.01 parts triphenylphosphine hydrogen), low shrinkage agent (2 parts polyvinyl acetate)...

Embodiment example 2

[0068] 1) Preparation of modified epoxy resin

[0069] Weigh hydrogenated epoxy resin and bisphenol A epoxy resin in proportion (hydrogenated bisphenol A epoxy resin: bisphenol A diglycidyl ether=1:2, mass component ratio, 22 parts in total), join in Heat the reaction kettle to 100°C, and at the same time add catalyst A (0.18 parts of sodium titanate) and part of the crosslinking agent (12 parts of styrene) according to the mass components, and control the pH value of the reaction system to 8.0, and fully react under this condition 25 minutes;

[0070] 2) Preparation of modified epoxy vinyl resin

[0071] The reaction temperature of the modified epoxy epoxy resin reaction kettle of step 1 is continuously cooled and the control temperature is 70°C, and the polymerization inhibitor (0.08 part of hydroquinone), initiator (0.03 part of triphenylsilanol-triacetoacetate aluminum), catalyst B (0.08 parts of triphenylphosphine hydrogen), low shrinkage agent (5 parts of polyvinyl ace...

Embodiment example 3

[0073] 1) Preparation of modified epoxy resin

[0074] Weigh hydrogenated epoxy resin and bisphenol A epoxy resin in proportion (hydrogenated bisphenol A epoxy resin: bisphenol A diglycidyl ether=1:2, mass component ratio, 32 parts in total), join in Heat the reaction kettle to 100°C, and simultaneously add catalyst A (0.5 parts of sodium titanate) and part of the crosslinking agent (12 parts of styrene) according to the mass components, and control the pH value of the reaction system to 8.8, and fully react under this condition 30 minutes;

[0075] 2) Preparation of modified epoxy vinyl resin

[0076] The reaction temperature of the modified epoxy epoxy resin reaction kettle of step 1 is continuously cooled and the control temperature is 80°C, and the polymerization inhibitor (0.08 part of hydroquinone), initiator (0.05 part of triphenylsilanol-triacetoacetate ethyl aluminum), catalyst B (0.1 part of triphenylphosphine hydrogen), low shrinkage agent (8 parts of polyvinyl ac...

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Abstract

The invention discloses a modified epoxy vinyl resin for low-shrinking concrete and a preparation method thereof. The modified epoxy vinyl resin for low-shrinking concrete is prepared from, by mass, 15-32 parts of modified epoxy resin, 18-38 parts of unsaturated monoacid, 2-8 parts of low shrinking agents, 0.01-0.5 part of catalyst A, 0.01-0.1 part of catalyst B, 0.05-0.1 part of polymerization inhibitor, 20-32 parts of cross-linking agents and 0.01-0.05 part of initiator, wherein the modified epoxy resin includes hydrobisphenol epoxy resin and bisphenol A-type epoxy resin, and the mass component ratio of the hydrobisphenol epoxy resin to the bisphenol A-type epoxy resin is (1:2) to (2:1). By the adoption of the good weather resistance, multifold padding filling rates, multifold linear expansion rates, multifold contractibility rates and water absorption of the epoxy resin, the epoxy resin is modified, not only are the tensile strength, elastic modulus and compressive strength of the epoxy resin ensured, but also the weather resistance and stability of the epoxy vinyl resin are improved, meanwhile, the shrinking rate of the epoxy vinyl resin is reduced, and the various requirements of the epoxy vinyl resin for concrete are met.

Description

technical field [0001] The invention relates to a modified epoxy vinyl resin for low-shrinkage concrete and a preparation method thereof, belonging to the field of concrete. Background technique [0002] Epoxy vinyl ester resin has the excellent properties of epoxy resin and unsaturated polyester resin, so it has been widely used in chemical anti-corrosion, flue gas desulfurization, transportation, electronic appliances, boats and other aspects. And it has good low shrinkage. Compared with the shrinkage rate of 6% to 8% of general fumarene vinyl resin and 1% to 3% of epoxy resin, the shrinkage rate of epoxy vinyl ester resin is only 0.5%, but when the epoxy vinyl ester resin is copolymerized, it is easy to produce stickiness on the surface layer in contact with the air, and its stability and weather resistance are poor. For the relatively harsh service environment of concrete, the application of epoxy vinyl ester resin has strong inapplicability. [0003] Hydrogenated bisp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F285/00C08F283/10C08F212/08
Inventor 曹健于迪尔凌晨陈刚朱振宇刘昌财张伟季路梁超
Owner 江苏金苏泽工程技术有限公司
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