Resin for UV-cured strippable protection film, preparation method and applications thereof

A technology of protective film and ultraviolet light, which is applied in the direction of coating, etc., can solve the problems of affecting efficiency, wasting energy, and fogging on the protected surface, and achieves the effect of energy saving and no VOC pollution

Inactive Publication Date: 2015-08-12
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The current mainstream production process is to use thermosetting resin as the main material of the peelable protective adhesive, but there are the following problems: 1. It needs to be heated and fixed, which wastes energy; 2. A small amount of VOC is released, which is not environmentally friendly; 3. Solidification Long speaking time will affect the efficiency; 4. In the process of heating and curing, it is easy to produce overheating and solidification, and the protected surface will appear foggy after peeling off; 5. It needs to be stored in the freezer, and transportation and storage are inconvenient; Big

Method used

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  • Resin for UV-cured strippable protection film, preparation method and applications thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] 1) Weigh 60g of methyl methacrylate, 40g of butyl acrylate, 10g of acrylic acid, 40g of hydroxypropyl acrylate, 50g of isooctyl methacrylate and 200g of ethyl acetate, and the total mass of the above five acrylic acid monomers is 3.5 % of azobisisobutyronitrile is mixed uniformly, and nitrogen gas is introduced;

[0037] 2) Take 10% of the total mass of the above mixture and place it in a four-neck flask equipped with a stirring rod, condenser, constant pressure burette and thermometer, and react at a temperature of 75±1°C for 30 minutes; slowly add the remaining mixture The liquid content is 5.0% dodecyl mercaptan of the total mass of the 5 kinds of acrylic acid monomers described in step 1), and the reaction is continued for 1 h after the dropwise addition is completed;

[0038] 3) Dissolve azobisisobutyronitrile with a content of 1.5% of the total mass of the five acrylic acid monomers described in step 1) in 20ml of ethyl acetate, and slowly add it dropwise to the r...

Embodiment 2

[0044] 1) Weigh 40g of methyl methacrylate, 30g of butyl acrylate, 20g of acrylic acid, 30g of hydroxypropyl acrylate, 30g of isooctyl methacrylate and 150g of ethyl acetate, and the total mass of the above five acrylic acid monomers is 1.4 % of azobisisobutyronitrile is mixed uniformly, and nitrogen gas is introduced;

[0045] 2) Take 5% of the total mass of the above mixture and place it in a four-neck flask equipped with a stirring rod, condenser, constant pressure burette and thermometer, and react at a temperature of 75±1°C for 30 minutes; slowly add the remaining mixture The liquid content is 1.0% dodecyl mercaptan of the total mass of the 5 kinds of acrylic acid monomers described in step 1), and the reaction is continued for 1 h after the dropwise addition is completed;

[0046] 3) Dissolve azobisisobutyronitrile with a content of 1.5% of the total mass of the five acrylic acid monomers described in step 1) in 15ml of ethyl acetate, and slowly add it dropwise to the re...

Embodiment 3

[0051] 1) Weigh 60g of methyl methacrylate, 30g of butyl acrylate, 20g of acrylic acid, 40g of hydroxypropyl acrylate, 50g of isooctyl methacrylate and 200g of ethyl acetate, and the total mass of the above five acrylic acid monomers is 3.0 % of azobisisobutyronitrile is mixed uniformly, and nitrogen gas is introduced;

[0052] 2) Take 10% of the total mass of the above mixture and place it in a four-neck flask equipped with a stirring rod, condenser, constant pressure burette and thermometer, and react at a temperature of 75±1°C for 30 minutes; slowly add the remaining mixture The liquid content is 1.5% dodecyl mercaptan of the total mass of the 5 kinds of acrylic acid monomers described in step 1), and the reaction is continued for 1 h after the dropwise addition is completed;

[0053] 3) Use 20ml of ethyl acetate to dissolve azobisisobutyronitrile with a content of 1.5% of the total mass of the five acrylic acid monomers described in step 1), and slowly add it dropwise to t...

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Abstract

The invention discloses a resin for UV-cured strippable protection film, a preparation method and applications thereof. The preparation method comprises the following steps: adding the following monomers: methyl methacrylate, butyl acrylate, acrylic acid, hydroxypropyl acrylate, isooctyl methacrylate, and azodiisobutyronitrile into an organic solvent, evenly mixing to obtain a mixed solution, introducing nitrogen gas into the mixed solution; adding part of the mixed solution into a four-mouth flask, carrying out reactions; dropwise adding the rest mixed solution and lauryl mercaptan, keeping on reactions; dissolving azodiisobutyronitrile by an organic solvent, then dropwise adding into the four-mouth flask, carrying out reactions; cooling the solution, dropwise adding diisocyanate, heating to carry out reactions; after cooling, dropwise adding a mixed solution of hydroxy acrylate and a polymerization inhibitor, heating; adding monohydric alcohol, cooling, and discharging the product. The provided resin can be easily peeled off from the surface of steel or glass. Furthermore, the UV curing system is more environment-friendly, the resin is nontoxic and harmless, the curing time is short, the resin can be cured within 10 seconds to form a film, and the production efficiency is largely improved.

Description

technical field [0001] The invention belongs to the technical field of surface protection materials, and in particular relates to a resin for UV-curable peelable protective film and a preparation method and application thereof. Background technique [0002] The invention belongs to the technical field of surface protection materials, in particular to a preparation method of a UV resin for a peelable protective film. Peelable glue is mainly used for coating and protecting more precise metal workpieces, devices, etc., so that they will not be soiled or damaged by the environment and operation during the manufacturing process, and at the same time play the role of insulation and moisture resistance. In addition to the general characteristics of ordinary coating films, its coating film is also required to have a certain degree of elasticity and strength, and to have suitable adhesion and good peelability to its protective base surface, which requires excellent peelability ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/14C08F220/18C08F220/06C08F220/28C08F8/30C08F8/14C09D133/12C09D5/20
Inventor 陈广学杨宇崔艳艳邰晶磊
Owner SOUTH CHINA UNIV OF TECH
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