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Water-based release agent and preparation method thereof

A water-based release type, water-based acrylic technology, applied in polyurea/polyurethane coatings, coatings, etc., can solve problems such as failure to meet inspection standards, large residues, and low volatility of organic solutions

Inactive Publication Date: 2013-08-21
广东鑫皇冠新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The organic solution has low volatility and a large amount of residue when dried, which cannot meet the national inspection standards

Method used

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  • Water-based release agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The formula component of this water-based release agent is calculated in an amount by mass:

[0029] 25 parts of modified water-based acrylic resin;

[0030] 50 parts of deionized water;

[0031] 1.0 parts of polycarbodiimide crosslinking agent;

[0032] 0.1 part of modified silicone defoamer;

[0033] 1 part of ethylene glycol antifreeze;

[0034] 0.1 part of modified polyurethane thickener;

[0035] The mass concentration is 0.1-0.6 part of ammonia water of 15%.

[0036] The preparation method step of the aqueous release agent of above-mentioned formula is:

[0037] (1) Put 25 parts by mass of modified water-based acrylic resin and 50 parts by mass of deionized water into the reactor, and use a high-speed disperser to stir at a medium-low speed at a temperature of 20-30°C. 300-400 rpm, stirring for 3-6 minutes to obtain a uniformly dispersed emulsion;

[0038] (2) Add 1.0 part by mass of polycarbodiimide crosslinking agent, 0.1 part by mass of modified silicone...

Embodiment 2

[0043] The formula component of this water-based release agent is calculated in an amount by mass:

[0044] 28 parts of modified water-based acrylic resin;

[0045] 56 parts of deionized water;

[0046] 2.0 parts of trifunctional aziridine crosslinking agent;

[0047] 0.2 parts of polyether silicone oil defoamer;

[0048] 2 parts of ethylene glycol;

[0049] 0.2 part of modified polyurethane;

[0050] The mass concentration is 0.1-0.6 part of ammonia water of 15%.

[0051] The preparation method step of the aqueous release agent of above-mentioned formula is:

[0052] (1) Put 28 parts by mass of modified water-based acrylic resin and 56 parts by mass of deionized water into the reactor, and use a high-speed disperser to stir at a medium-low speed at a temperature of 20-30°C. 300-400 rpm, stirring for 3-6 minutes to obtain a uniformly dispersed emulsion;

[0053] (2) Add 2.0 parts by mass of a trifunctional aziridine crosslinking agent, 0.2 parts by mass of polyether sil...

Embodiment 3

[0058]The formula component of this water-based release agent is calculated in an amount by mass:

[0059] 30 parts of modified water-based acrylic resin;

[0060] 60 parts of deionized water;

[0061] 2.5 parts of polycarbodiimide crosslinking agent;

[0062] 0.3 parts of modified silicone defoamer;

[0063] 3 parts of ethylene glycol;

[0064] 0.3 part of modified polyurethane;

[0065] The mass concentration is 0.1-0.6 part of ammonia water of 15%.

[0066] The preparation method step of the aqueous release agent of above-mentioned formula is:

[0067] (1) Put 30 parts by mass of modified water-based acrylic resin and 60 parts by mass of deionized water into the reaction kettle, and use a high-speed disperser for medium-low speed stirring at a temperature of 20-30°C. 300-400 rpm, stirring for 3-6 minutes to obtain a uniformly dispersed emulsion;

[0068] (2) Add 2.5 parts by mass of polycarbodiimide crosslinking agent, 0.3 parts by mass of modified silicone defoamer ...

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Abstract

The invention discloses a water-based release agent and a preparation method thereof. The formula of the water-based release agent comprises the following components in parts by weight: 25 to 35 parts of modified water-based acrylic resin, 50 to 70 parts of deionized water, 1 to 4 parts of a crosslinking agent, 0.1 to 0.5 part of a defoaming agent, 1 to 5 parts of glycol. 0.1 to 0.5 part of improved polyurethane and 0.1 to 0.6 part of ammonia water at the mass concentration of 15 percent, wherein the weight ratio of the modified water-based acrylic resin to the crosslinking agent comprises five groups. The preparation method of the water-based release agent comprises the following steps of: (1) mixing and stirring the modified water-based acrylic resin and the deionized water to prepare emulsion dispersed uniformly; and (2) adding the crosslinking agent, the defoaming agent, the glycol and the improved polyurethane into the emulsion, stirring to prepare coating, and adjusting the pH value of the coating to be 6.2 to 8.2 by using the ammonia water. The water-based release agent is not externally crosslinked with a protected object during use and is easy to remove after film formation; and an organic solvent is not adopted, so the water-based release agent is environment-friendly, pollution-free and low in cost.

Description

technical field [0001] The invention relates to the technical field of release agents, in particular to a water-based release agent and a preparation method thereof. Background technique [0002] The release agent is a layer of isolation film applied between the product and the mold to prevent the formed composite product from sticking to the mold, so that the product can be easily released from the mold, ensuring the surface quality of the product and the mold are intact. It is possible to spray a layer of release agent on the surface of digital products, home appliances, aluminum profiles, glass, and stainless steel products as a protective film to prevent the product surface from being scratched. Commonly used solution-type release agents are all non-water-soluble release agents, and organic solutions are used as solvents. The organic solution has low volatility and a large residue when dried, which cannot meet the national inspection standards. Therefore, the research ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/00C09D175/04C09D7/12
Inventor 张国明黄宝坤周玉申国辉
Owner 广东鑫皇冠新材料有限公司
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