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EVA (Ethylene-Vinyl Acetate) composite emulsion type low temperature-resistant and environmentally-friendly all-purpose adhesive and preparation method thereof

A composite emulsion, low temperature resistant technology, applied in the direction of adhesive types, adhesives, rosin adhesives, etc., to achieve the effect of improving adhesive strength, reducing the amount of glue applied, and expanding the use temperature range

Active Publication Date: 2010-12-29
东莞市山力高分子材料科研有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies of the existing EVA emulsion adhesive, to provide a kind of EVA emulsion type universal adhesive that does not contain organic solvents such as toluene and has excellent performance.

Method used

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  • EVA (Ethylene-Vinyl Acetate) composite emulsion type low temperature-resistant and environmentally-friendly all-purpose adhesive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The preparation of polyether type polyurethane emulsion comprises the following raw materials:

[0030] 14 parts toluene diisocyanate

[0031] Polyether diol 90 parts

[0032] 1,4-butanediol 1.5 parts

[0033] Trimethylolpropane 0.2 parts

[0034] 2.5 parts of triethylamine

[0035] Tetraethyl orthosilicate 2.3 parts

[0036] Dimethylol propionic acid 3.5 parts

[0037] Ethylenediamine 0.5 parts

[0038] Proper amount of acetone

[0039] 200 parts of water

[0040] The specific preparation method is as follows:

[0041] A certain proportion of toluene diisocyanate (TDI) and polyether diol (N240, =4000) into a reaction kettle with a reflux condenser and a stirrer, stirred at a constant speed, and reacted at 85°C for 3 hours. Cool the reaction down to about 70°C, add dimethylolpropionic acid (DMPA) and a small amount of stannous octoate (T-9), and add a small amount of acetone at the same time. Control the reaction temperature at 75°C, react for 1.5 hours; add...

Embodiment 2

[0067] Prepare polyether type polyurethane emulsion raw material and specific method with embodiment 1.

[0068] Preparation of polyester polyurethane emulsion raw materials and specific methods are the same as in Example 1.

[0069] The preparation of EVA emulsion type universal adhesive comprises the following raw materials:

[0070] EVA emulsion 80 parts

[0071] Rosin tackifying resin emulsion 10 parts

[0072] Polyester polyurethane emulsion 5 parts

[0073] Ethylene glycol 1 part

[0074] Dibutyl phthalate 0.5 parts

[0075] Kason 2 servings

[0076] Wetting agent 0.6 parts

[0077] Appropriate amount of pH adjuster

[0078] The specific preparation method is the same as in Example 1, and will not be repeated here.

Embodiment 3

[0080] Prepare polyether type polyurethane emulsion raw material and specific method with embodiment 1.

[0081] Preparation of polyester polyurethane emulsion raw materials and specific methods are the same as in Example 1.

[0082] The preparation of EVA emulsion type universal adhesive comprises the following raw materials:

[0083] EVA emulsion 70 parts

[0084] Rosin tackifying resin emulsion 10 parts

[0085] Polyether polyurethane emulsion 10 parts

[0086] Polyester polyurethane emulsion 5 parts

[0087] Ethylene glycol 1 part

[0088] Dibutyl phthalate 0.5 parts

[0089] Kason 2 servings

[0090] Wetting agent 0.6 parts

[0091] Appropriate amount of pH adjuster

[0092] The specific preparation method is the same as in Example 1, and will not be repeated here.

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Abstract

The invention discloses an EVA (Ethylene-Vinyl Acetate) composite emulsion type low temperature-resistant and environmentally-friendly all-purpose adhesive and a preparation method thereof, belonging to the field of water-based adhesives. The invention adopts the technical scheme that an EVA emulsion is modified by utilizing a rosin tackifying resin emulsion and a polyurethane emulsion together to prepare the EVA emulsion all-purpose adhesive. The all-purpose adhesive comprises the following components in parts by weight: 65-80 parts of EVA emulsion, 5-15 parts of rosin tackifying resin emulsion, 5-15 parts of polyurethane emulsion and the balance of auxiliary agent, wherein the auxiliary agent comprises an antifreeze agent, a plasticizer, a mildew-proof agent, a wetting agent and a pH regulator. When making, the preparation method comprises the following steps of: adding the EVA emulsion to a dispersion kettle with a stirrer, and uniformly stirring; adding the polyurethane emulsion, and stirring and mixing for 1.0-1.5h; then adding the rosin tackifying resin emulsion, the plasticizer of dibutyl phthalate, the antifreeze agent of glycol, the mildew-proof agent of Kathon and the wetting agent, and stirring and uniformly mixing; adding the pH regulator, such as ammonia water or triethylamine to regulate pH value to be 4.5-5.5, and filtering and discharging. The obtained all-purpose adhesive has indexes which reach or exceed common white latexes, convenient use and wide applicability, and can be widely used for architectural decoration, furniture making, cases, and the like and used at normal temperature but also at the low temperature from 5 DEG C to 5 DEG C below zero.

Description

technical field [0001] The invention relates to the technical field of universal glue and its preparation, in particular to the field of water-based adhesives. Background technique [0002] In the past, most of the all-purpose adhesives used in the construction and decoration industry were solvent-based neoprene adhesives. Not only the process is complicated, the cost is high, and the smell is strong, but also solvents such as benzene are used, which is harmful to human health. At present, the commercially available super glue also has solvent-based SBS super glue, which uses dichloromethane, dichloroethane, cyclohexane, solvent gasoline, etc. as solvents, causing air pollution and poison during use, and is flammable and explosive. . With the enhancement of people's awareness of environmental protection, the toxicity of adhesives and the negative impact on the environment have attracted increasing attention. Water-based adhesives have the advantages of environmental protec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J123/08C09J131/04C09J193/04C09J175/06C09J175/08C09J175/04C08G18/48C08G18/44
Inventor 罗伟雄
Owner 东莞市山力高分子材料科研有限公司
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