Waterproof adhesive for pipeline joint and preparation method of waterproof adhesive

Abstract

The invention discloses a waterproof adhesive for a pipeline joint. The waterproof adhesive has the advantages that lactic acid / glycerin organic zirconium is used as a cross-linking agent, so that remarkable thermosensitive cross-linking characteristics are achieved; an ethylene-ethyl acrylate copolymer fiber base solution is used as a thickener, through the cross-linking action, gel with favorable temperature resistance and shear resistance can be formed; the copolymer base solution treated with fibers can improve the surface activity of a copolymer, enhance the cross-linking effect, and improve the viscoelasticity and the thixotropy.

Description

technical field

[0001] The invention relates to an adhesive, in particular to a waterproof adhesive for pipe joints and a preparation method thereof. Background technique

[0002] Traditional vegetable adhesives are easily hydrolyzed at high temperatures and have poor protection for the substrate, while ethylene-ethyl acrylate copolymer has strong thickening ability and good temperature resistance;

[0003] Usually, the most commonly used crosslinking agent for obtaining polymer gels is organoboron or organozirconium, and organoboron crosslinking agents can only withstand temperatures up to 150°C. Organic zirconium can be crosslinked under acidic conditions and has high temperature resistance. Up to 200 ° C, has broad application prospects. Contents of the invention

[0004] The object of the present invention is to provide a waterproof adhesive for pipe joints and a preparation method thereof.

[0005] The present invention is achieved through the following technical so...

Examples

Embodiment 1

[0020] A kind of waterproof adhesive for pipe joint, it is made up of following raw materials of weight part:

[0021] Polyvinylidene fluoride 50, sisal fiber 15, sp-80 3.5, 12mol / l nitric acid solution 0.4, ethylene-ethyl acrylate copolymer 210, zirconium oxychloride 1.3, lactic acid 0.5, glycerol 0.6, tetraisocyanate 3. Lanolin 10, tetraethyl orthosilicate 20, polyether glycol 0.8, 30-35% ammonia water 3, tert-butyl hydrodiphenol 3.

[0022] A preparation method for a waterproof adhesive for a pipe joint, comprising the following steps:

[0023] (1) Add ethyl orthosilicate to 1.2 times the weight of absolute ethanol, add the above 35% ammonia water, add 20% of the above sp-80 weight under stirring conditions, add tetraisocyanate, and keep stirring at 76°C 40 minutes to get silicon emulsion;

[0024] (2) Take 16% of the weight of the above ethylene-ethyl acrylate copolymer, mix it with polyvinylidene fluoride, add polyether diol and tert-butyl hydroquinone under stirring co...

technical field

[0001] The invention relates to an adhesive, in particular to a waterproof adhesive for pipe joints and a preparation method thereof. Background technique

[0002] Traditional vegetable adhesives are easily hydrolyzed at high temperatures and have poor protection for the substrate, while ethylene-ethyl acrylate copolymer has strong thickening ability and good temperature resistance;

[0003] Usually, the most commonly used crosslinking agent for obtaining polymer gels is organoboron or organozirconium, and organoboron crosslinking agents can only withstand temperatures up to 150°C. Organic zirconium can be crosslinked under acidic conditions and has high temperature resistance. Up to 200 ° C, has broad application prospects. Contents of the invention

[0004] The object of the present invention is to provide a waterproof adhesive for pipe joints and a preparation method thereof.

[0005] The present invention is achieved through the following technical so...

Examples

Embodiment 1

[0020] A kind of waterproof adhesive for pipe joint, it is made up of following raw materials of weight part:

[0021] Polyvinylidene fluoride 50, sisal fiber 15, sp-80 3.5, 12mol / l nitric acid solution 0.4, ethylene-ethyl acrylate copolymer 210, zirconium oxychloride 1.3, lactic acid 0.5, glycerol 0.6, tetraisocyanate 3. Lanolin 10, tetraethyl orthosilicate 20, polyether glycol 0.8, 30-35% ammonia water 3, tert-butyl hydrodiphenol 3.

[0022] A preparation method for a waterproof adhesive for a pipe joint, comprising the following steps:

[0023] (1) Add ethyl orthosilicate to 1.2 times the weight of absolute ethanol, add the above 35% ammonia water, add 20% of the above sp-80 weight under stirring conditions, add tetraisocyanate, and keep stirring at 76°C 40 minutes to get silicon emulsion;

[0024] (2) Take 16% of the weight of the above ethylene-ethyl acrylate copolymer, mix it with polyvinylidene fluoride, add polyether diol and tert-butyl hydroquinone under stirring co...