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Adhesive for bamboo wound compound pipe and preparation method of adhesive

A technology for adhesives and composite pipes, applied in the direction of aldehyde/ketone condensation polymer adhesives, adhesive types, polymer adhesive additives, etc., can solve the problems that have not been mentioned about bamboo winding composite pipes, and achieve Improve the ultraviolet light absorption activity, increase the service life, and improve the effect of the service life

Active Publication Date: 2017-05-17
王小催
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the disclosed prior art does not mention the specific composition and preparation method of the adhesive of the bamboo winding composite pipe, because the adhesive is used to bond the layers of the bamboo winding composite pipe, and after curing, it is transported with the pipe. The fluid medium is in direct contact, and its properties are the key to determining the anti-leakage, anti-corrosion and service life of the entire composite pipe

Method used

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  • Adhesive for bamboo wound compound pipe and preparation method of adhesive

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preparation example Construction

[0061] The raw material for the preparation of the graphite phase carbon nitride is one or more of dicyandiamide, urea and cyanuric acid.

[0062]The present invention uses graphite phase carbon nitride as a reinforcing agent. Due to its unique electronic energy band structure, graphite phase carbon nitride can absorb ultraviolet light, significantly improve the aging resistance of the adhesive, and increase the use of the adhesive. Lifespan; In addition, graphite phase carbon nitride has antibacterial activity under light conditions, and it is added to the adhesive for the bonding of bamboo materials, which can effectively prevent bamboo materials from mildew, insects and decay, and further improve bamboo. Service life of wound composite pipe.

[0063] The imidazole ionic liquid is chlorinated 1-butyl-3-methylimidazolium ionic liquid, chlorinated 1-allyl-3-methylimidazolium ionic liquid, chlorinated 1-(2-hydroxyethyl)- 3-methylimidazole ionic liquid, 1-butyl-3-methylimidazol...

Embodiment 1

[0086] Prepare the adhesive of adhesive embodiment 1 according to the following process

[0087] The preparation of step one amino resin

[0088] a. Add 620g of formaldehyde into a sealable container, stir, and add 216g of urea;

[0089] b, adjust the pH value to 8.0 with a NaOH solution with a mass concentration of 20%, add 63g melamine and 8.5g polyvinyl alcohol;

[0090] c, the temperature is raised to 70°C, and the pH value is adjusted to 7 with a NaOH solution with a mass concentration of 20%;

[0091] d. Continue to heat up to 80°C, and keep it warm for 30 minutes;

[0092] e. Use a phosphoric acid solution with a mass concentration of 10% to adjust the pH value to 5.0, add the acid slowly, and the dripping time is 20 minutes; adjusting the system to acidity can promote the condensation reaction and improve the adhesion of the system;

[0093] f. Use NaOH solution with a mass concentration of 20% to adjust the pH value to 8.5, add 7g melamine and 72g urea again, and r...

Embodiment 2

[0105] Prepare the adhesive of adhesive embodiment 2 according to the following process

[0106] The preparation of step one amino resin

[0107] The preparation of amino resin is with embodiment 1;

[0108] Step two preparation of the main agent

[0109] a. Take 1.8 g of graphite phase carbon nitride and 3 g of 1-allyl-3-methylimidazolium chloride ionic liquid, add 10 g of deionized water, stir, and ultrasonically disperse to mix evenly to obtain graphite phase carbon nitride Dispersions;

[0110] B, get above-mentioned graphite phase carbon nitride dispersion liquid, the amino resin that makes in 52g comparative example, the deionized water of 14g, the chloride 1-allyl-3-methylimidazolium ionic liquid of 3g and 0.4g ammoniacal liquor , mix it evenly, stir it mechanically for 3 hours, and then filter it with an 80-mesh filter cloth to obtain the main ingredient;

[0111] Step 3 Preparation of Adhesive

[0112] Stir 50 g of the main agent prepared in step 2 and 7 g of cur...

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Abstract

The invention belongs to the technical field of adhesives and relates to an adhesive for a bamboo wound compound pipe and a preparation method of the adhesive. The adhesive for the bamboo wound compound pipe comprises a main agent and a curing agent, and is characterized in that the mass ratio of the main agent to the curing agent is (48-53):( 6-7), wherein the main agent is prepared from components in parts by mass as follows: 48-60 parts of amino resin, 0.5-1.2 parts of polyvinyl alcohol, 0.5-2.5 parts of graphite-phase carbon nitride, 4-8 parts of an imidazole type ionic liquid, 20-34 parts of deionized water, 0.3-0.5 parts of ammonium hydroxide. The adhesive has high bonding strength and static resistance or electrical conductivity. The adhesive is prepared from graphite-phase carbon nitride as a reinforcing agent, thereby having the advantage of ultraviolet aging resistance.

Description

technical field [0001] The invention belongs to the technical field of adhesives, and relates to an adhesive used for bamboo winding composite pipes and a preparation method thereof. Background technique [0002] Bamboo material is a renewable green environmental protection material. In recent years, with the increasing maturity of bamboo winding composite pipe related technologies. Bamboo composite pipe, as a pipe that can withstand a certain pressure, can generally replace traditional pipes such as spiral welded pipes, prestressed steel tube concrete pipes, plastic and glass steel pipes in the fields of forestry water delivery, farmland irrigation and drainage, etc., and has a good application prospect . [0003] Chinese invention patent CN205716073U discloses a bamboo fiber reinforced composite pipe. The composite pipe includes an inner liner, a reinforced layer and an outer protective layer along the diameter direction of the pipe. The reinforced layer includes a first ...

Claims

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Application Information

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IPC IPC(8): C09J161/30C09J11/08C09J11/04C09J11/06C08G12/38
CPCC08G12/38C08L2201/04C08L2203/18C09J11/04C09J11/06C09J11/08C09J161/30C08L29/04C08K3/28
Inventor 王小催
Owner 王小催
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