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Organosilicon modified waterborne photo-curing epoxy-acrylic coating and preparation method thereof

A technology of epoxy propylene and silicone, which is applied in the direction of epoxy resin coatings and coatings, can solve the problems of water-based light-curing epoxy acrylate resins such as water resistance and poor mechanical properties, and achieve improved water resistance and hardness, Improve the effect of cross-linking points

Inactive Publication Date: 2016-02-24
SKSHU PAINT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a silicone-modified water-based photocurable epoxy-acrylic coating and a preparation method thereof, which solves technical problems such as water resistance and poor mechanical properties of the water-based photocurable epoxy acrylate resin. It is a real Zero-VOC water-based light-curing prepolymer, improving the water resistance and mechanical properties of water-based light-curing epoxy acrylate resins such as hardness, adhesion, and pendulum hardness

Method used

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  • Organosilicon modified waterborne photo-curing epoxy-acrylic coating and preparation method thereof
  • Organosilicon modified waterborne photo-curing epoxy-acrylic coating and preparation method thereof
  • Organosilicon modified waterborne photo-curing epoxy-acrylic coating and preparation method thereof

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specific Embodiment approach

[0032] Components of Silicone Modified Waterborne Photocurable Epoxy-Acrylic Prepolymer

[0033]

[0034] 1) Preparation of epoxy propylene ester prepolymer:

[0035] In the reactor, at room temperature, add 45.4-49.4 parts of epoxy resin and 0.4-0.6 parts of polymerization inhibitor, then adjust the rotation speed to 200-350rmp, when the temperature rises to 75-85°C, then slowly add 15.84- 18.72 parts of acrylic acid and 0.4-0.6 parts of N, N-dimethylaniline, the time of dropping is 0.5-1h, after the dropping is completed, the temperature is raised to 86-90°C, and then the acid value is measured every half hour until the acid value When it is 3-5mgKOH / g, lower the temperature to obtain epoxy acrylic acid prepolymer;

[0036] 2) Preparation of unsaturated anhydride-modified epoxy propylene ester prepolymer:

[0037] When the temperature of the reaction system prepared in step 1) is lowered to 50-60°C, while maintaining the above speed, add 21.58-25.5 parts of unsaturated ...

Embodiment 1

[0045] Components of Silicone Modified Waterborne Photocurable Epoxy-Acrylic Prepolymer

[0046]

[0047] 1) Preparation of epoxy propylene ester prepolymer:

[0048] equipped with stirrer, condenser, N 2 Add epoxy resin and 0.4 parts of polymerization inhibitor to the five-necked flask of the catheter, constant pressure funnel and thermometer, and the rotation speed is 200rmp. -Dimethylethanolamine, after 0.5h of dropwise addition, then the temperature was raised to 86°C, and the acid value was measured by sampling regularly, until the acid value was lower than 5mgKOH / g, the temperature was lowered to obtain the epoxy acrylic acid prepolymer.

[0049] 2) Preparation of unsaturated acid anhydride modified epoxy propylene ester prepolymer:

[0050] When the temperature of the above reaction system is lowered to 60°C, the rotation speed is 200rmp, add unsaturated acid anhydride, 0.34 parts of catalyst N,N-dimethylaniline and 0.34 parts of polymerization inhibitor, stir well...

Embodiment 2

[0056]

[0057] 1) Preparation of epoxy propylene ester prepolymer:

[0058] equipped with stirrer, condenser, N 2 Add epoxy resin and 0.55% polymerization inhibitor to the five-necked flask of conduit, constant pressure funnel and thermometer, and the rotation speed is 270rmp. Methylethanolamine, 0.5-1h dropwise is completed, then the temperature is raised to 85°C, and the acid value is measured by sampling regularly, until the acid value is lower than 5mgKOH / g, the temperature is lowered to obtain the epoxy acrylic acid prepolymer.

[0059] 2) Preparation of unsaturated acid anhydride modified epoxy propylene ester prepolymer:

[0060] When the temperature of the above reaction system is lowered to 60°C, the rotation speed is 270rmp, add unsaturated acid anhydride, 0.37% of catalyst N,N-dimethylaniline and 0.4 part of polymerization inhibitor, fully stir evenly, and control the temperature at 65°C. When the acid value reaches the theoretical value, the temperature is lo...

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Abstract

The invention relates to an organosilicon modified waterborne photo-curing epoxy-acrylic coating prepared from the following components in parts by weight: 45.4-49.4 parts of epoxy resin, 0.74-1 part of a polymerization inhibitor, 0.74-1 part of N,N-dimethyl ethanolamine, 15.84-18.72 parts of acrylic acid, 21.58-25.5 parts of unsaturated acid anhydride, 12.98-15.34 parts of an organosilicon monomer, 11.11-13.56 parts of triethylamine, 2.57-4.64 parts of a waterborne light initiator, and 20-30 parts of deionized water. The organosilicon modified waterborne photo-curing epoxy acrylate prepolymer is a true zero-VOC waterborne photo-curing prepolymer, and has the advantages of high crosslinking degree, good water resistance, high hardness, good adhesive force, high pendulum hardness and good flexibility.

Description

technical field [0001] The invention relates to a preparation method of a silicone-modified water-based light-curing epoxy-acrylic paint, which can be used for finish varnishes and belongs to the field of water-based light-curing. Background technique [0002] Ultraviolet UV curing is an advanced material surface treatment technology. UV-curable coatings have been extensively researched and applied in recent years because of their advantages such as high production efficiency, fast curing speed, energy saving, and good coating performance. China has now become a major producer of photocurable raw materials and products after the United States and Japan, and a large number of reactive diluents and photoinitiators in photocurable raw materials have been exported. With the widespread promotion of UV-curable coatings, its disadvantages are gradually exposed. The damage to the human body and the pollution of the environment caused by reactive diluents and volatile organic compo...

Claims

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Application Information

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IPC IPC(8): C09D163/10C09D7/12C08G59/14C08G59/17
Inventor 洪杰詹俊英
Owner SKSHU PAINT
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