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Strong glue

A glue and strong technology, applied in the direction of adhesives, adhesive types, adhesive additives, etc., can solve the problems of not being able to bond different materials, high free formaldehyde content, slow bonding speed, etc., and achieve fast bonding and excellent production process Simple, high-performance effects

Active Publication Date: 2014-01-08
NANJING HEMU NEW MATERIAL SCI & TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Now glue is one of the main materials in the decoration industry, and its quality directly affects the quality of decoration. Now glue requires a large amount of raw materials, and has a high content of free formaldehyde, which is not environmentally friendly. It cannot bond some different materials, and the bonding speed is slow. , corrosive

Method used

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Effect test

Embodiment 1

[0015] A kind of superglue described in this embodiment is mainly composed of the following raw materials in parts by weight:

[0016] Formaldehyde: 35 parts, urea: 18 parts, polyvinyl alcohol: 4 parts, distilled water: 50 parts, formaldehyde scavenger: 22 parts, sodium hydroxide: 2 parts, hydrochloric acid 1 part, antifungal agent 0.5 parts.

[0017] A kind of superglue described in the present embodiment, concrete preparation method, comprises the following steps:

[0018] 1. Add the formaldehyde scavenger to the reaction kettle, add the same weight of water and stir for 3 minutes;

[0019] 2. Add 34% formaldehyde, polyvinyl alcohol and water to the reaction kettle, stir for 4 minutes, during the stirring process, add urea in 3 times;

[0020] 3. Heat the solution in the reactor to 96°C, stop heating, and react for 160 minutes;

[0021] 4. Cool down to 72°C, add hydrochloric acid to make the pH value of the solution reach 4.5-5, and let it stand for 3 minutes;

[0022] 5....

Embodiment 2

[0037] A kind of superglue described in this embodiment is mainly composed of the following raw materials in parts by weight:

[0038] 42 parts of formaldehyde, 23 parts of urea, 4 parts of polyvinyl alcohol, 55 parts of distilled water, 24 parts of formaldehyde scavenger, 3 parts of sodium hydroxide, 2 parts of hydrochloric acid, 0.5 parts of antifungal agent.

[0039] A kind of super glue described in this embodiment, the specific preparation method comprises the following steps.

[0040] 1. Add the formaldehyde scavenger to the reaction kettle, add the same weight of water and stir for 4 minutes;

[0041] 2. Add 35% formaldehyde, polyvinyl alcohol and water to the reaction kettle, stir for 5 minutes, during the stirring process, add urea in 4 times;

[0042] 3. Heat the solution in the reactor to 80-100°C, stop heating, and react for 170 minutes;

[0043] 4. Cool down to 73°C, add hydrochloric acid to make the pH of the solution reach 4.8, and let it stand for 2 minutes; ...

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Abstract

The present invention belongs to the field of industrial glues, and particularly relates to a strong glue mainly comprising the following raw materials: by weight, 30-45 parts of formaldehyde, 15-25 parts of urea, 2-5 parts of polyvinyl alcohol, 35-60 parts of distilled water, 15-25 parts of a formaldehyde removing agent, 1-3 parts of sodium hydroxide, 1-2 parts of hydrochloric acid and 0.5-1 part of a mould inhibitor. The strong glue is safe, environmentally friendly, simple in production process, low in cost and strong in adhesive fastness, has high temperature resistance and good ageing resistance, is non-corrosive, rapid in adhesion and non-stripping, and can be commonly used in industry, construction, decoration, electronics and electronic appliances, automobile manufacturing, shipbuilding, instruments, machinery, transportation, light textiles, shoemaking, printing, locomotives, vehicles, household electrical appliances, motor manufacturing and other fields.

Description

technical field [0001] The invention belongs to the field of industrial glue, and in particular relates to a super glue. Background technique [0002] Now glue is one of the main materials in the decoration industry, and its quality directly affects the quality of decoration. Now glue requires a large amount of raw materials, and has a high content of free formaldehyde, which is not environmentally friendly. It cannot bond some different materials, and the bonding speed is slow. , corrosive. Contents of the invention [0003] In order to solve the above problems, the invention discloses a superglue, which has strong bonding fastness, high temperature resistance, good aging resistance, no corrosion, fast bonding and no falling off. [0004] To achieve the above object, the technical scheme of the present invention is as follows: [0005] A kind of super glue, which is mainly composed of the following raw materials in parts by weight: [0006] Formaldehyde: 30-45 parts, u...

Claims

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Application Information

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IPC IPC(8): C09J161/24C09J11/08C09J11/00C08G12/12
Inventor 周义云
Owner NANJING HEMU NEW MATERIAL SCI & TECH DEV
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