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Formula and process for preparing water-based PVC (polyvinyl chloride) corrosion-resisting adhesive

A technology of adhesives and tapes, applied in the direction of adhesives, adhesive types, ester copolymer adhesives, etc., can solve the problems of high use cost, complicated operation, and difficulty in meeting engineering needs, so as to improve construction efficiency, The effect of saving heat energy and saving the cost of use

Inactive Publication Date: 2015-06-17
临沂国力化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Regardless of tape production or on-site construction, the operation is more complicated, the colloid is not easy to melt uniformly, the coating is thicker, the use cost is higher, and the peeling force and strength are not enough.
[0004] At present, there are also manufacturers who use acrylic pressure-sensitive adhesives to coat the surface of polyvinyl chloride substrates to make tapes. Although they have good mechanical properties and low prices, the peeling force and tensile strength of PVC anti-corrosion tapes produced by them are low. Relatively low, it is difficult to meet the needs of the project

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Group ratio:

[0030] 58 parts of deionized water, 2.5 parts of MS-1 composite emulsifier, 6 parts of acrylic acid, 8 parts of hydroxyethyl acrylate, 15 parts of vinyl acetate, 25 parts of acrylate monomer, 0.02 parts of molecular weight regulator, chemically pure persulfuric acid 0.3 parts of ammonium, 0.1 parts of chemically pure sodium bicarbonate, 0.2 parts of N-methylolacrylamide, 0.4 parts of ammonia water, 0.2 parts of defoamer DF-13111, 2 parts of tackifying resin, and 0.1 part of wetting agent.

[0031] step:

[0032] 1. Take 4 parts of deionized water to dissolve chemically pure ammonium persulfate for use; take 2 parts of deionized water to dissolve chemically pure sodium bicarbonate for use; take 3 parts of deionized water to dissolve N-methylolacrylamide for use;

[0033] 2. Take 18 parts of deionized water and add it to the pre-emulsification tank, add 1.25 parts of MS-1 composite emulsifier under the condition of 900 rpm, put in all acrylic acid, hydroxy...

Embodiment 2

[0038] Group ratio:

[0039] 58 parts of deionized water, 3 parts of MS-1 composite emulsifier, 6 parts of acrylic acid, 8 parts of hydroxyethyl acrylate, 15 parts of vinyl acetate, 25 parts of acrylate monomer, 0.2 parts of molecular weight regulator, chemically pure persulfuric acid 0.4 parts of ammonium, 0.2 parts of chemically pure sodium bicarbonate, 0.3 parts of N-methylolacrylamide, 0.6 parts of ammonia water, 0.4 parts of defoamer DF-13111, 4 parts of tackifying resin, and 0.2 parts of wetting agent.

[0040] step:

[0041] 1. Take 4 parts of deionized water to dissolve chemically pure ammonium persulfate for use; take 2 parts of deionized water to dissolve chemically pure sodium bicarbonate for use; take 3 parts of deionized water to dissolve N-methylolacrylamide for use;

[0042] 2. Take 18 parts of deionized water and add it to the pre-emulsification tank, add 1.5 parts of MS-1 composite emulsifier under the condition of 900 rpm, put in all acrylic acid, hydroxyeth...

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PUM

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Abstract

The invention discloses a formula for preparing water-based PVC (polyvinyl chloride) corrosion-resisting adhesive. The water-based PVC corrosion-resisting adhesive is prepared by emulsion polymerization of deionized water, MS-1 compound-type emulgator, crylic acid, hydroxyethyl acrylate (HEA), vinyl acetate (VAC), acrylate monomer, molecular weight modifier, chemically pure ammonium persulfate, chemically pure sodium bicarbonate, N-hydroxy methyl acrylamide, ammonia, defoamer, tackifying resin and wetting agent in a certain ratio. The product water-based PVC corrosion-resisting adhesive is liquid at room temperature, and has the advantages that coating and construction are convenient, release force is large, bonding strength is high, work efficiency is improved, heat energy is greatly saved, use cost is reduced, and the like.

Description

technical field [0001] The invention relates to an adhesive, in particular to a water-based PVC anticorrosion tape adhesive. Background technique [0002] There are many supporting projects in urban construction that use steel pipes buried underground. In order to prevent corrosion and heat preservation of steel pipes, it is necessary to use PVC calendered film as the base material to pre-coat adhesive and use it as an anti-corrosion tape, which is wound on the steel pipes for protection. In addition, the anti-corrosion tape is also used for other purposes such as cable winding anti-corrosion. [0003] At present, the adhesives coated on the PVC anti-corrosion tape base material are commonly used EVA and polyurethane hot melt adhesives. During the production process, the hot melt adhesive needs to be heated to 160°C-180°C in the melter to melt, and then Use a special hot-melt adhesive coating machine to coat, dry and rewind; unwind at the construction site. Warm up before ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J133/04C09J7/02C08F220/10C08F220/06C08F220/28C08F218/08C08F2/24
Inventor 吴祖顺吴昊
Owner 临沂国力化工有限公司