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A water-based semi-permanent organic fluorine release agent

A semi-permanent, fluorine release agent technology, used in the field of release agents, can solve the problems of poor wear resistance, poor adhesion, safety hazards, solvent volatilization, etc., and achieve slow decay, lasting release agent effect, and reduce surface tension. Effect

Active Publication Date: 2021-11-02
HUNAN QIWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, oil-based products are mostly used in the market. A large amount of solvents will volatilize during use, which will cause certain harm to the environment and humans. Water-based products are close to zero VOC emissions, which can greatly reduce the damage to the environment and humans. On the other hand, oil-based products Because the product contains a large amount of solvents, there are great safety hazards in the process of production, transportation and storage. Therefore, safe and environmentally friendly water-based release agents will become mainstream products in the future
[0004] Most of the water-based release agents currently developed in the market are conventional release agents. The coating formed by the release agent on the mold has poor wear resistance and poor adhesion to the mold. It can only be used once for one coating. As described in the patent No. CN200910048867.3, a water-based release agent is prepared by mixing emulsified wax liquid, methyl silicone oil emulsion, modified silicone oil emulsion, etc. in a certain proportion, and adding corresponding additives. The components combined by reaction can only be coated once and used once. It is a sacrificial release agent. In the patent number CN201610961071.7, long-chain alkyl siloxane emulsion, dimethyl siloxane emulsion and polyethylene wax emulsion are used. The prepared water-based release agent also belongs to this type of sacrificial release agent, so it is an urgent problem to develop a semi-permanent release agent that can be used multiple times in one coating.

Method used

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  • A water-based semi-permanent organic fluorine release agent

Examples

Experimental program
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Effect test

Embodiment 1

[0022] A water-based semi-permanent organic fluorine release agent, the components of which are: 4 parts of perfluoro-1-hexadecyl sodium sulfonate, 1H,1H,8H,8H-dodecafluoro-1 , 3 parts of 8-octanediol, 40 parts of water-based fluororesin emulsion, 5 parts of zinc stearate, 5 parts of glyceryl monostearate, 2 parts of polyethylene glycol (the number average molecular weight is 2000), 60 parts of deionized water share.

[0023] The water-based fluororesin emulsion is prepared by the following method: in parts by weight, 30 parts of perfluoro(2-methylpent-2-ene), 2 parts of acrylic acid, and 0.15 parts of methyl ethyl ketone peroxide are added to the mixing tank Stir evenly to obtain mixed solution I; under the condition of blowing nitrogen, mix 8 parts of perfluoro(2-methylpent-2-ene), 2 parts of acrylic acid, 3 parts of ethylene glycol monobutyl ether, 6 parts of acetone, 0.03 parts of Add oxidized methyl ethyl ketone into the reaction kettle, heat it to 130°C, and react for 3...

Embodiment 2

[0026] A water-based semi-permanent organic fluorine release agent, the components of which are: 2 parts of perfluoro-1-dodecyl sodium sulfonate, 2,2,3,3-tetrafluoro-1, 5 parts of 4-butanediol, 20 parts of water-based fluororesin emulsion, 5 parts of magnesium stearate, 3 parts of glyceryl tripalmitate, 4 parts of polyethylene glycol (number average molecular weight: 20000), 40 parts of deionized water .

[0027] The water-based fluororesin emulsion is prepared by the following method: in parts by weight, 22 parts of nonafluoro-tert-butyl methacrylate, 2.3 parts of acrylic acid, 0.14 parts of di-tert-butyl cumene peroxide are added to the mixing Stir evenly in the kettle to obtain the mixed liquid I; under the condition of nitrogen, 9 parts of nonafluoro-tert-butyl methacrylate, 1.7 parts of acrylic acid, 5 parts of ethylene glycol monobutyl ether, 4 parts of acetone, 0.05 parts of di-tert-butyl Add the cumene peroxide into the reaction kettle, heat it to 124°C, and react for...

Embodiment 3

[0030] A water-based semi-permanent organic fluorine release agent, its components are: 3 parts of sodium perfluorononenyloxybenzene sulfonate, 2, 2, 3, 3, 4, 4, 5, 5 parts by weight - 4 parts of octafluoro-1,6-hexanediol, 28 parts of water-based fluororesin emulsion, 6 parts of calcium stearate, 4 parts of tripalmitin, 3 parts of polyethylene glycol (number average molecular weight: 6000), 54 parts of deionized water.

[0031] The water-based fluororesin emulsion is prepared by the following method: in parts by weight, 20 parts of perfluoro(4-methylpent-2-ene), 3 parts of acrylic acid, 0.1 part of tert-butyl peroxybenzoate are added Stir evenly in a mixing tank to obtain a mixed solution; under nitrogen, 12 parts of perfluoro(4-methylpent-2-ene), 1 part of acrylic acid, 6 parts of ethylene glycol monobutyl ether, 3 parts of acetone, Add 0.1 part of tert-butyl peroxybenzoate into the reaction kettle, heat to 110°C, and react for 30 minutes, add the mixed solution I dropwise t...

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Abstract

The invention relates to a water-based semi-permanent organic fluorine release agent, which is characterized in that, in parts by weight, its components are: 3 parts of sodium perfluorononenyloxybenzenesulfonate, 2, 2, 3, 3, 4 parts of 4,4,5,5-octafluoro-1,6-hexanediol, 28 parts of water-based fluororesin emulsion, 6 parts of calcium stearate, 4 parts of glycerol tripalmitate, polyethylene glycol (number average Molecular weight is 6000) 3 parts, deionized water 54 parts. Compared with the silicone mold release agent, the mold release agent of the present invention has higher mold release efficiency and lower surface tension, and has higher application prospects.

Description

technical field [0001] The invention belongs to the technical field of release agents, in particular to a water-based semi-permanent organic fluorine release agent. Background technique [0002] The release agent is a functional substance between the mold and the finished product, which can prevent rubber, plastic and other elastomers and other materials from adhering to the surface of the mold, and is a type of processing aid that assists demoulding. Dosage. [0003] At present, oil-based products are mostly used in the market. A large amount of solvents will volatilize during use, which will cause certain harm to the environment and humans. Water-based products are close to zero VOC emissions, which can greatly reduce the damage to the environment and humans. On the other hand, oil-based products Because the product contains a large amount of solvent, there are great safety hazards in the process of production, transportation and storage. Therefore, safe and environmental...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C33/62
Inventor 朱杭彭新良
Owner HUNAN QIWEI TECH CO LTD
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