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Single-component polyvinylacetate binding agent and preparation method thereof

A vinyl acetate and adhesive technology, applied in the direction of monocarboxylate copolymer adhesives, adhesive types, non-polymer adhesive additives, etc., can solve the complex process of two-component adhesives, etc. problem, to achieve the effect of low cost, simple process and improved water resistance

Inactive Publication Date: 2010-12-08
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Polymeric polyisocyanate is a highly toxic chemical, which severely limits its application, and the application process of two-component adhesives is complex

Method used

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  • Single-component polyvinylacetate binding agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] In percent by weight, the content of each component of a one-component vinyl acetate adhesive raw material is:

[0041] Deionized water 48%

[0042] Polyvinyl alcohol 3%

[0043] Vinyl acetate 24%

[0044] Butyl Acrylate 4.5%

[0045] Hydroxyethyl Acrylate 2%

[0046] Methacrylic acid 1%

[0047] Silicone 10%

[0048] Complex emulsifier 2%

[0049] Initiator 0.2%

[0050] pH regulator 0.3%

[0051] Plasticizer 5%

[0052] Among them, the degree of polymerization of polyvinyl alcohol is 1700, and the degree of alcoholysis is 86. The organosilicon is vinyltriethoxysilane, and the pH regulator is 2% sodium bicarbonate aqueous solution. The initiator is an aqueous ammonium persulfate solution with a mass concentration of 5%. The plasticizer is dibutyl phthalate.

[0053] The preparation method of one-component vinyl acetate adhesive comprises the steps:

[0054] Preparation of the first step seed emulsion

[0055] Weigh the specified amount of each component, ...

Embodiment 2

[0060] In percent by weight, the content of each component of a one-component vinyl acetate adhesive raw material is:

[0061] Deionized water 50%

[0062] Polyvinyl alcohol 3%

[0063] Vinyl acetate 28%

[0064] Butyl Acrylate 4.5%

[0065] Hydroxyethyl Acrylate 1%

[0066] Methacrylic acid 1%

[0067] Silicone 12%

[0068] Complex emulsifier 2%

[0069] Initiator 0.2%

[0070] pH regulator 0.3%

[0071] Plasticizer 8%

[0072] Polyvinyl alcohol has a degree of polymerization of 1800 and a degree of alcoholysis of 88. The organosilicon is vinyltrimethoxysilane, and the pH regulator is 4% sodium bicarbonate aqueous solution. The initiator is an aqueous ammonium persulfate solution with a mass concentration of 7%. The plasticizer is dioctyl phthalate.

[0073] The preparation method of one-component vinyl acetate adhesive comprises the steps:

[0074] Preparation of the first step seed emulsion

[0075] Weigh the specified amount of each component, first pour water ...

Embodiment 3

[0080] In percent by weight, the content of each component of a one-component vinyl acetate adhesive raw material is:

[0081] Deionized water 48%

[0082] Polyvinyl alcohol 5%

[0083] Vinyl acetate 13.5%

[0084] Butyl Acrylate 8%

[0085] Hydroxyethyl Acrylate 3%

[0086] Methacrylic acid 3%

[0087] Silicone 12%

[0088] Complex emulsifier 1%

[0089] Initiator 0.3%

[0090] pH regulator 0.2%

[0091] Plasticizer 6%

[0092] Polyvinyl alcohol has a degree of polymerization of 2000 and a degree of alcoholysis of 90. The organosilicon is vinyltriethoxysilane, and the pH regulator is an aqueous solution of sodium bicarbonate with a mass concentration of 6%. The initiator is an aqueous ammonium persulfate solution with a mass concentration of 8%. The plasticizer is dibutyl phthalate.

[0093] The preparation method of one-component vinyl acetate adhesive comprises the steps:

[0094] Preparation of the first step seed emulsion

[0095] Weigh the specified amount ...

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Abstract

The invention discloses a single-component polyvinylacetate binding agent and a preparation method thereof. The single-component polyvinylacetate binding agent comprises the following raw materials in percentage by weight: 48 to 52 percent of deionized water, 3 to 5 percent of polyvinyl alcohol, 25 to 40 percent of polyvinylacetate, 5 to 10 percent of butyl acrylate, 2 to 3 percent of hydroxyethyl acrylate, 1 to 3 percent of methyl acrylic acid, 10 to 15 percent of organic silicon, 2 to 3 percent of composite emulsifier, 0.1 to 0.9 percent of initiator, 0.1 to 0.3 percent of pH regulator and 5 to 10 percent of plasticizer. The binding agent of the invention is modified waterproof and high temperature-resistant white latex prepared by acrylic ester and organic silicon modification with polyvinyl alcohol as protective colloid and polyvinylacetate as a base stock. All technical indexes of the binding agent are beyond standards of chemical industry, the waterproof performance and high temperature resistance of the binding agent are high, the production process of the binding agent is simple, the cost of the binding agent is low, and thus, the binding agent is a safe and environmentally-friendly product.

Description

technical field [0001] The invention relates to an adhesive, in particular to a novel one-component vinyl acetate adhesive and a preparation method thereof. Background technique [0002] Polyvinyl acetate emulsion, commonly known as white latex, is the product with the largest output among synthetic resin emulsions. The synthesis process of polyvinyl acetate emulsion is simple. It mainly uses vinyl acetate as the main monomer, polyvinyl alcohol (PVA) as the protective colloid, water as the dispersion medium, and water-soluble persulfate as the initiator. made. Polyvinyl acetate emulsion has the characteristics of low cost, non-toxic, tasteless, convenient to use, no environmental pollution, resource saving, etc. It is considered as a kind of green and environmental protection adhesive. It has strong adhesion to materials such as wood, paper, and fiber, so it is widely used in many aspects such as adhesives, coatings, construction, fabric processing, and paper processing. ...

Claims

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Application Information

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IPC IPC(8): C09J131/04C09J11/06C08F218/08
Inventor 袁文辉周辰辰陈华荣李莉
Owner SOUTH CHINA UNIV OF TECH
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