Preparation method for antistatic UV (Ultraviolet) coating and film forming method of same

An antistatic, plastic film technology, applied in the direction of polyurea/polyurethane coatings, coatings, etc., can solve the problem that macromolecular antistatic agents are not easy to migrate, affect product appearance and light transmittance, and affect product antistatic performance, etc. Achieve the effect of ensuring visible light transmittance and clarity, improving surface hardness and scratch resistance, and superior antistatic performance

Active Publication Date: 2015-01-07
GUANGZHOU SHENWEI NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, since polythiophene is a high polymer with a relatively large molecular weight, it has poor compatibility with UV resins, resulting in poor stability of the prepared coating and foreign matter points during the coating and curing process. problems such as fogging and fogging, which affect the appearance and light transmittance of the product; at the same t

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0036] Example 1

[0037] 1. Preparation of Antistatic UV Curing Coatings

[0038] (1) put 25g of polythiophene with a molecular weight of 35000, 25g of poly(3,4-ethylenedioxythiophene) with a molecular weight of 25000 and 200g of propylene glycol methyl ether into the reaction kettle 1, with a high-speed stirring disperser at 200rpm / Stir and disperse at a rotating speed of min for half an hour and mix evenly to obtain mixed solution A;

[0039] (2) 50g of carboxylic acid-modified urethane acrylic resin of NeoRad U-42 ​​produced by DSM-AGI company (molecular weight is 800, acid value is 1mgKOH / g, carboxyl group content is 6%), 50g pentaerythritol hexaacrylate , 0.25g of polyether-modified polydimethylsiloxane (BYK3530) and 1g of 2-hydroxyl-2-methyl-1-phenyl-1-acetone were put into the reactor 2 together, and a high-speed stirring disperser was used to The rotating speed of 200rpm / min is stirred and dispersed for 1 hour to obtain mixed solution B;

[0040] (3) Mix mixture B...

Example Embodiment

[0054] Example 2

[0055] 1. Preparation of Antistatic UV Curing Coatings

[0056] (1) Put 16.7g of polythiophene with a molecular weight of 55,000, 33.3g of poly(3,4-ethylenedioxythiophene) with a molecular weight of 28,000 and 200g of ethylene glycol ether into the reaction kettle 1, and use a high-speed stirring disperser Stir and disperse at a rotating speed of 200 rpm / min for half an hour to obtain mixture A;

[0057] (2) 70g of carboxylic acid-modified urethane acrylic resin of NeoRad U-42 ​​produced by DSM-AGI company (molecular weight is 800, acid value is 1mgKOH / g, carboxyl group content is 6%), 30g pentaerythritol hexaacrylate, 0.35g of polyether-modified polydimethylsiloxane (BYK3530) and 0.6g of 2-hydroxy-2-methyl-1-phenyl-1-acetone were put into the reaction kettle 2 together, and a high-speed stirring disperser was used to make the solution. The rotating speed of 200rpm / min is stirred and dispersed for 1 hour to obtain mixed solution B;

[0058] (3) Mix mixtur...

Example Embodiment

[0072] Example 3

[0073] 1. Preparation of Antistatic UV Curing Coatings

[0074] (1) Put 50g of polythiophene and its derivatives (12.5g of polythiophene with molecular weight of 64,000 and 37.5g of poly(3,4-ethylenedioxythiophene) with molecular weight of 35,000) and 200g of propylene glycol diethyl ether into the reaction In the kettle 1, use a high-speed stirring disperser to stir and disperse at a rotating speed of 200rpm / min for half an hour and mix to obtain mixture A;

[0075] (2) 70g of carboxylic acid-modified urethane acrylic resin with model NeoRad U-30W produced by DSM-AGI company (molecular weight is 4400, acid value is 8mgKOH / g, carboxyl group content is 6%), 30g pentaerythritol hexaacrylate, 0.35 g of polyether-modified polydimethylsiloxane (BYK3530) and 0.6g of 2-hydroxy-2-methyl-1-phenyl-1-acetone were put into the reactor 2 together, and a high-speed stirring disperser was used at 200rpm. The rotating speed of / min is stirred and dispersed for 1 hour to o...

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Abstract

The invention relates to a preparation method for an antistatic UV (Ultraviolet) coating and a film forming method of the same, wherein the preparation method for the antistatic UV coating comprises the following steps: firstly, adding an ether solvent into a polythiophene macro-molecular solution; after stirring for dispersing at a high speed, mixing with a UV prepolymer, an active diluent and a photoinitiator and stirring at a high speed till the mixture is uniformly dispersed; and finally adding a solvent. The film forming method of the antistatic UV coating comprises the following steps: coating an antistatic UV curing coating on a plastic thin film, and adopting a low-temperature vacuum drying or cooling, blowing and drying method to obtain a film which is 2-5 mu m thick; and then, firstly, curing for 2 seconds to 1 minute under the condition that the photocuring energy is 100-200mJ/cm<2> and then curing for 2 seconds to 1 minute under the condition that the photocuring energy is 600-1000mJ/cm<2>. The antistatic UV coating provided by the invention is good in stability and the prepared antistatic film further has the advantages of good antistatic property, high hardness, strong scratch resistance and the like.

Description

technical field [0001] The invention relates to the field of organic polymer compounds, relates to polymer compounds using only carbon-carbon double bonds, and specifically relates to UV curable resins. Background technique [0002] In recent years, with the rapid development of precision electronics and precision equipment industries, the production environment and packaging materials for some sensitive electronic components, chips, precision instruments and meters are very strict. For ordinary plastic sheets, due to the high-impedance insulation properties of plastics, static electricity is easily generated under friction or induction conditions. When a large amount of static electricity accumulates, high-voltage discharges are prone to occur, thereby damaging precision equipment. At the same time, due to the adsorption of static electricity, dust will accumulate on the plastic substrate, resulting in a decrease in cleanliness, which will interfere with the production of ...

Claims

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Application Information

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IPC IPC(8): C09D175/14C09D165/00C09D7/12C08J7/04C08L69/00
CPCC08J7/0427C08J2333/12C08J2367/02C08J2369/00C08J2475/14C08L2205/035C09D7/65C09D175/14C08L65/00C08L83/12
Inventor 王锐涛袁慧雅王小莺曾雯黄贤瑞
Owner GUANGZHOU SHENWEI NEW MATERIAL TECH
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