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Organic silicon modified cationic light cured alicyclic epoxy resin paint and application thereof

An epoxy resin coating, cycloaliphatic epoxy technology, applied in the direction of coating, liquid coating device on the surface, surface pretreatment, etc., can solve the problems of poor toughness and leveling, and achieve good toughness and good water resistance Stain resistance, strong reactivity effect

Active Publication Date: 2018-04-20
NANXIONG MATERIAL PRODION BASE OF CHINESE ACADEMY OF SCI GUANGZHOU CHEM +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the existing toughness and poor leveling of cycloaliphatic epoxy resin coatings, the primary purpose of the present invention is to provide a silicone-modified cationic photocurable cycloaliphatic epoxy resin with suitable viscosity and toughness coating

Method used

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  • Organic silicon modified cationic light cured alicyclic epoxy resin paint and application thereof
  • Organic silicon modified cationic light cured alicyclic epoxy resin paint and application thereof
  • Organic silicon modified cationic light cured alicyclic epoxy resin paint and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Embodiment 1: the preparation of cycloaliphatic epoxy resin prepolymer

[0046] In parts by weight, 150 parts of 2-butanone is placed in a reactor with a stirrer and a condenser, and 10 parts of 3,4-epoxycyclohexyl-methyl methacrylate, 45 45 parts of methyl methacrylate and 45 parts of butyl acrylate, stirred and heated to 90°C, then added 4.5 parts of azobisisobutyronitrile, kept the reaction at this temperature for 5 hours, and then recovered the solvent by distillation under reduced pressure to obtain cycloaliphatic epoxy Resin prepolymer S1;

[0047] figure 1 In order to obtain the infrared spectrogram of cycloaliphatic epoxy resin prepolymer S1, it can be found from the figure that at 790cm -1 The characteristic absorption of cycloaliphatic epoxy appears at , indicating that 3,4-epoxycyclohexyl-methyl methacrylate is connected to the main chain of acrylate polymer;

Embodiment 2

[0048] Embodiment 2: the preparation of cycloaliphatic epoxy resin prepolymer

[0049] In parts by weight, take 150 parts of 2-butanone and place it in a reactor with a stirrer and a condenser tube, and add 20 parts of 3,4-epoxycyclohexyl-methylmethacrylate, 40 parts of methyl methacrylate and 40 parts of butyl acrylate, after stirring and raising the temperature to 80°C, add 4.5 parts of dibenzoyl oxide, keep the reaction at this temperature for 7 hours, and then recover the solvent by distillation under reduced pressure to obtain alicyclic ring Oxygen resin prepolymer S2;

Embodiment 3

[0050] Embodiment 3: the preparation of cycloaliphatic epoxy resin prepolymer

[0051] Recorded in parts by weight, take 150 parts of ethyl acetate and place it in a reactor with a stirrer and a condenser tube, and add 30 parts of 3,4-epoxycyclohexyl-methyl methacrylate, 70 parts 1 part of n-hexyl methacrylate, after stirring and heating up to 90°C, add 4.5 parts of azobisisoheptanonitrile, keep the reaction at this temperature for 5 hours, and then recover the solvent by distillation under reduced pressure to obtain alicyclic epoxy resin prepolymer S3 ;

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Abstract

The invention discloses organic silicon modified cationic light cured alicyclic epoxy resin paint and application thereof. The paint comprises the following components: 70 to 100 parts of alicyclic epoxy prepolymer, 1 to 25 parts of organic silicon modified alicyclic epoxy monomer, 0 to 15 parts of a reactive diluent, 0.2 to 1 part of a defoamer, 0.3 to 1 part of a flatting agent, and 0.1 to 2.5 parts of a cationic photoinitiator. The paint has the advantages that acrylic ester is copolymerized into alicyclic epoxy resin prepolymer, and flexible groups are led into the alicyclic epoxy resin prepolymer, so that the toughness is improved; in addition, the organic silicon modified alicyclic epoxy monomer is added, the surface performance and the water and stain resistance of the paint are improved. The paint can be rapidly crosslinked after being irradiated by ultraviolet light, and is energy-saving and efficient. The cured paint has excellent adhesive force and water and stain resistance.

Description

technical field [0001] The invention belongs to the field of photocurable coatings, and in particular relates to a silicone-modified cationic photocurable alicyclic epoxy resin coating and an application thereof. Background technique [0002] Epoxy resin has good physical and chemical properties after curing, and is widely used in coatings, adhesives, machinery, construction, electronic and electrical insulation materials, aerospace, etc. in various sectors of national defense and national economy. Epoxy can be polymerized and crosslinked by UV light radiation in the presence of cationic photoinitiators. Compared with free radical photopolymerization, the cationic photocuring process has the following advantages: no air inhibition, and " Dark curing” reaction, low toxicity, low volume shrinkage and energy efficient. The cured resin has good wear resistance and corrosion resistance. [0003] Current research is still mainly focused on cationic light-curing coatings of ordin...

Claims

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Application Information

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IPC IPC(8): C09D133/12C09D133/10C09D133/14C09D183/06C09D4/06C09D7/63C08F220/14C08F220/18C08F220/32C08G77/38B05D3/06B05D7/24
CPCB05D3/067B05D7/24C08F220/14C08F220/18C08F220/1806C08F220/32C08G77/38C09D4/06C09D133/14C08L83/06C08F220/1804
Inventor 梁利岩朱青青吴昆史珺吕满庚
Owner NANXIONG MATERIAL PRODION BASE OF CHINESE ACADEMY OF SCI GUANGZHOU CHEM
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