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Preparation methods of UV curing polymercaptan resin and curing film

A polythiol resin and curing film technology, applied in the field of organic polymer synthesis, can solve the problems of increasing raw material costs and inconvenient use

Active Publication Date: 2020-02-14
SHANDONG EFIRM BIOCHEMISTRY & ENVIRONMENTAL PROTECTION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is inconvenient to use in large-scale applications because an initiator needs to be added when the two components are mixed to cause a curing reaction, and the need to add an initiator increases the cost of raw materials

Method used

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preparation example Construction

[0037] The present invention also provides a kind of preparation method of UV curing polythiol resin cured film, comprises the following steps:

[0038] In parts by weight, mix 0.01 to 70 parts of mercapto compounds, 0.01 to 60 parts of acrylate or modified acrylate compounds, 0.01 to 10 parts of UV initiator and 0.01 to 10 parts of UV polymerization inhibitor. Stirring is carried out at room temperature to obtain a mixture;

[0039] The obtained mixture is cured under ultraviolet light irradiation to obtain a UV cured polythiol resin cured film.

[0040] In the present invention, the wavelength of the ultraviolet light is preferably 280-400 nm, more preferably 320-400 nm; the irradiation time of the ultraviolet light is preferably 1-10 s, more preferably 2-8 s, most preferably 5-6 s .

[0041]The invention provides a UV-curable polythiol resin, which is prepared from the following raw materials in parts by weight: mercapto compound: 0.01-70 parts; acrylate or modified acryl...

Embodiment 1

[0045] Weigh 50 g of 2,3-dithio(2-mercapto)-1-propanethiol in a four-necked flask, add trimethylolpropane tris(3-mercapto propionate) 50 g, hydroquinone 0.1g, 3g of 2-methyl-1-(4-methylthiophenyl)-2-morpholinyl-1-propanone, start stirring, stir at room temperature for 2h, and discharge; take an appropriate amount of sample in Test panels, spread evenly with a paint film preparer. Place under a UV curing lamp to cure. The prepared cured film was placed in a drying oven to be tested for other properties.

Embodiment 2

[0047] Weigh 43g of 2,3-dithio(2-mercapto)-1-propanethiol in a four-necked flask, add trimethylolpropane tris(3-mercaptopropionate) 57g, hydroquinone 0.1g, 5g of 2-methyl-1-(4-methylthiophenyl)-2-morpholinyl-1-propanone, start stirring, stir at room temperature for 2h, and discharge; take an appropriate amount of sample in Test panels, spread evenly with a paint film preparer. Place under a UV curing lamp to cure. The prepared cured film was placed in a drying oven to be tested for other properties.

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Abstract

The invention provides UV cured polymercaptan resin. The UV cured polymercaptan resin is prepared from the following raw materials in parts by weight: 0.01-70 parts of a sulfhydryl compound, 0.01-60 parts of an acrylate or modified acrylate compound, 0.01-10 parts of a UV initiator, and 0.01-10 parts of a UV polymerization inhibitor, wherein the sulfhydryl compound contains two or more -SH structures, and terminal groups of the acrylate or modified acrylate compound contain two or more -C=C- groups. Polymercaptan is modified by acrylate, acrylate unsaturated double bonds are introduced in molecular structure, thus the polymercaptan can be subjected to UV cured under UV light irradiation, the cost is saved, the curing time is short, the energy utilization ratio is high, and environmental pollution is reduced. Moreover, mechanical properties such as adhesion and hardness of an obtained cured film are all improved.

Description

technical field [0001] The invention belongs to the field of organic polymer synthesis, and in particular relates to a method for preparing a UV-cured polythiol resin and a cured film. Background technique [0002] With the rapid development of economy, people pay more and more attention to environmental issues. UV curing resin is a kind of environment-friendly UV light curing material, which has received more and more attention. UV curable resin is a kind of chemical material that achieves the purpose of bonding, sealing, fixing, etc. by initiating polymerization and rapid curing through ultraviolet light irradiation, and has been applied in the field of photocuring coatings. Polymercaptan resin, as a low-temperature and fast-curing curing agent, is widely used in the fields of coating coating and adhesives. At present, it is mainly used in the fields of electronic appliances, metal and plastic original parts surface, disposable medical equipment, liquid crystal display a...

Claims

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Application Information

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IPC IPC(8): C08G75/045C08L81/02C08J5/18
CPCC08G75/045C08J5/18C08J2381/02
Inventor 张超梁万根崔卫华费潇瑶宋吻吻
Owner SHANDONG EFIRM BIOCHEMISTRY & ENVIRONMENTAL PROTECTION CO LTD
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