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Nanometer composite polyvinyl alcohol adhesive and its preparation method

A polyvinyl alcohol and nano-composite technology, applied in the direction of adhesive types, unsaturated alcohol copolymer adhesives, etc., can solve the problems of low adhesive force, pollute the environment, high cost, improve the adhesive strength, eliminate the Environmental pollution, easy operation effect

Inactive Publication Date: 2006-07-26
JIANGSU NDZ TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The adhesive has a wide temperature range and good water resistance, but its disadvantages are low adhesion, high cost, and environmental pollution.

Method used

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  • Nanometer composite polyvinyl alcohol adhesive and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Mix 100kg of nanocomposite polyvinyl alcohol adhesive, take 1.5kg of polyvinyl alcohol, 2.4kg of nano-scale attapulgite, and 96.1kg of water, add all these materials into the reaction bottle, and stir at a rate of 40-50 rpm at room temperature Evenly, heat up to 90-98°C, stir at a speed of 60-70 rpm for 0.5-1 hour, and discharge to obtain a nanocomposite polyvinyl alcohol adhesive. The adhesive can be used for bonding paper / polyester cloth composite materials.

[0020] The molecular formula of polyvinyl alcohol is: (CH 2 CHOH) n

[0021] The molecular formula of attapulgite is: MgAl 5 Si 8 o 20 (OH) 2 (OH 2 ) 4 4H 2 o

Embodiment 2

[0023] Mix 100kg of nanocomposite polyvinyl alcohol adhesive, take 1.5kg of polyvinyl alcohol, 3kg of nano-scale attapulgite, and 95.5kg of water, add all these materials into the reaction bottle, and stir evenly at a rate of 40-50 rpm at room temperature , heat up to 90-98° C., stir at a speed of 60-70 rpm for 0.5-1 hour, and discharge to obtain a nanocomposite polyvinyl alcohol adhesive. The finished adhesive is used for bonding wall coverings.

Embodiment 3

[0025] Mix 100kg of nanocomposite polyvinyl alcohol adhesive, take 2kg of polyvinyl alcohol, 3kg of nano-scale attapulgite, and 95kg of water, add all these materials into the reaction bottle, stir evenly at a rate of 40-50 rpm at room temperature, and heat up to 90-98° C., stirred at a rate of 60-70 rpm for 0.5-1 hour, and discharged to obtain a nanocomposite polyvinyl alcohol adhesive. The prepared adhesive is used for the bonding of plywood.

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Abstract

This invention relates to a nanocomposite polyvinyl alcohol adhesive, which is composed of polyvinyl alcohol, water, and added nanobuckle stick dust or nanomontmorillonite. Mass ratios of those components are: polyvinyl alcohol1-3%, nanobuckle stick dust or nanomontmorillonite 1-6%, water 91-98%. This invention also supplies the preparing method for the adhesive: charge polyvinyl alcohol, nanobuckle stick dust or nanomontmorillonite into reaction bulb, agitate to homogeneous at the speed of 40-50 circles per minite at normal temperature, heat to 90-98deg C, agitate for 0. 5-1 hour at the speed of60-70 circles per minite, discharge and get the nanocomposite polyvinyl alcohol adhesive. The adhesive made by this invention has such advantages: high bond strength, good heat-durability, little cost, not environmental pollution, fitting environment requirements totally. At the same time, it is easy to prepare and process flow is short, these reduce process cost largely. It is a ideal substitute for traditional polyvinyl alcohol.

Description

technical field [0001] The invention relates to a vinyl adhesive, in particular to a nanocomposite polyvinyl alcohol adhesive and a preparation method thereof. Background technique [0002] The adhesive formulated with polyvinyl alcohol as the main material is initially dissolved in water directly and used after adding an appropriate plasticizer. This kind of adhesive has strong bonding force, but poor heat resistance, especially hot water resistance, and the adhesive film will decompose in hot water at 45-50°C, so it has no promotional value. [0003] After 1965, manufacturers in my country made polyvinyl formal (PVFO) through acetal treatment (generally formal) of polyethanol. PVFO overcomes the disadvantage of poor heat resistance of pure polyvinyl alcohol, but the acetalization process is relatively complicated, the cost is high, and a large amount of formaldehyde overflows during use, which irritates the eyes and causes great pollution to the environment. [0004] Chi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J129/04
Inventor 高俊邵佳敏于庆国
Owner JIANGSU NDZ TECH
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