Modified vinyl acetate water-proof adhesive and its preparation method

A technology of vinyl acetate and waterproof glue, which is applied in the direction of building components, coatings, building insulation materials, etc., can solve the problems of heating of asphalt and ointment, poor anti-aging performance, and affecting waterproof effect, etc., to increase tensile strength and Durability, stable mechanical properties, and the effect of inhibiting bacterial growth and reproduction

Inactive Publication Date: 2003-02-05
潘全新
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Generally, low-cost hot-melt waterproof coatings such as asphalt and ointment are used as waterproof materials on the top layer of buildings. During construction, both asphalt and ointment need to be heated, flammable, labor-intensive, and polluted seriously. Cracks are produced, the anti-aging performance is extremely poor, the waterproof effect is affected, and the service life is short. However, the emulsion-type waterproof coating for construction has greatly improved the heat-melt property due to its low toxicity, non-flammability, low pollution, and convenient construction. The disadvantages of waterproof coatings have been widely used in construction. However, although commercially available emulsion-type waterproof coatings have high solid content and good adhesion and waterproof performance, they still have poor stability, low tensile strength, and poor durability. shortcoming

Method used

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Experimental program
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Effect test

Embodiment

[0018] The modified vinyl acetate waterproof glue provided by the present invention has a formula as follows:

[0019] Component Percentage%

[0020] Vinyl acetate 65

[0021] Sodium hydroxide 0.65

[0022] polyvinyl alcohol 1

[0023] Polyacrylamide 0.5

[0024] Sodium lignosulfonate 0.5

[0025] Tributyl 0.5

[0026] Sodium chloride 0.35

[0027] water 31.5

[0028] The specific preparation method is as follows:

[0029] Mix 65% vinyl acetate copolymer (707 glue) with 0.65% sodium hydroxide and put it into a reaction kettle, heat it to 60-70°C for modification reaction for 5-10 minutes, then add 15% water and stir for 10-20 Minutes to fully emulsify; add 1% polyvinyl alcohol and stir for 10 minutes, add 5% water and stir to dilute, then add 0.5% polyacrylamide and stir for 5-10 minutes, then add 5% water to stir and dilute, add 0.5% sodium lignosulfonate Stir with 0.35% sodium chloride for 10-15...

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Abstract

The present invention adopts vinyl acetate as main material, uses sodium hydroxide as modifying agent, adds tackifier, thickener, dispersing agent, defoaming agent, preservative and proper quantity of water to make them into the invented modified vinyl acetate water-proofing glue with the advantages of high tensile strength, good rheological property, high cohesive force, stable mechanical property, good durability, no pollution and long service life. Said invented water-proofing glue is mainly used for leak-proofing treatment, damp-proofing treatment of building, water-proofing and sealing treatment between members of building and repairing caulking of road, etc.

Description

technical field [0001] The invention relates to building waterproof coatings, especially used for anti-leakage and moisture-proof of buildings, waterproof and sealing between various building components of buildings, and road repair caulking and the like. Background technique [0002] Generally, low-cost hot-melt waterproof coatings such as asphalt and ointment are used as waterproof materials on the top layer of buildings. During construction, both asphalt and ointment need to be heated, flammable, labor-intensive, and polluted seriously. Cracks are produced, the anti-aging performance is extremely poor, the waterproof effect is affected, and the service life is short. However, the emulsion-type waterproof coating for construction has greatly improved the heat-melt property due to its low toxicity, non-flammability, low pollution, and convenient construction. The disadvantages of waterproof coatings have been widely used in construction. Howe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D131/04E04B1/62
Inventor 潘全新
Owner 潘全新
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