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Environment-friendly water-based adhesive and preparation process thereof

A water-based adhesive and preparation process technology, applied in the direction of adhesive types, protein adhesives, starch-derived adhesives, etc., can solve the problems of water-based adhesives such as limited adhesion performance, waste, and affecting the use of spray guns, etc. To achieve the effect of ensuring vacuum effect, convenient use and improved bonding effect

Active Publication Date: 2021-04-16
SHANGHAI JINGTAN CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It has high adhesive strength, excellent water resistance and weather resistance, and its performance conforms to Japanese JAS and European D4 standards. It is a green and environmentally friendly product; due to the lack of existing technology, the environmentally friendly water-based adhesive will be on the muzzle of the spray gun after use. solidification, thereby affecting the use of the spray gun, and the existing water-based adhesives are easy to spill, resulting in waste. The existing water-based adhesives do not have the effect of combining atmospheric pressure on the basis of material properties, resulting in limited adhesion performance of water-based adhesives , so that the two boards are not bonded tightly, which affects the use effect of the board
[0003] In the prior art, there have also been some technical solutions about environmentally friendly water-based adhesives and their preparation processes. For example, a Chinese patent with the application number CN201611110303.4 discloses an aqueous adhesive composition and a preparation method thereof. It mainly includes It is prepared from ethyl acrylate copolymer, deionized water, antioxidant, cellulase, vinyl acetate, dispersant, urea-formaldehyde resin, silicon oxide, stabilizer, water reducer, ammonium chloride and sodium hydroxide, in order to improve The performance of water-based adhesive composition can also add sodium carboxymethyl cellulose, water reducer, anti-aging agent, defoamer and anti-mildew agent, and gained water-based adhesive composition is a kind of environment-friendly adhesive material, In the manufacturing process, it has the processing advantages of low energy consumption, non-toxicity, excellent process performance, and simple operation, which enhances the anti-deterioration ability of the adhesive itself, greatly prolongs the storage stability period of the slurry, and improves the intrinsic performance of the adhesive. , to fundamentally meet the requirements for high adhesive strength of the adhesive; however, this technical solution does not combine the effect of atmospheric pressure during use, resulting in limited adhesion performance of the water-based adhesive, so that the bonding effect of the two wood boards is limited, thus limitations of the program

Method used

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  • Environment-friendly water-based adhesive and preparation process thereof
  • Environment-friendly water-based adhesive and preparation process thereof
  • Environment-friendly water-based adhesive and preparation process thereof

Examples

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preparation example Construction

[0034] A preparation process of an environmentally friendly water-based adhesive, the process is applicable to the above-mentioned environmentally friendly water-based adhesive, the steps of the process are as follows:

[0035] Ⅰ: Pour modified starch, EVA latex, epoxy resin, gelatin, moisture-proof agent and tackifier into the stirring tank, and then take out the air in the stirring tank, so that the inside of the stirring tank is in a vacuum state, while ensuring the stirring There is no moisture in the kettle; by ensuring that there is no moisture in the stirred tank, the raw materials are prevented from reacting after absorbing moisture, causing the raw materials to directly have a bonding effect, causing changes in the properties of the raw materials, and affecting the molding effect of the environmentally friendly water-based adhesive;

[0036] Ⅱ: Pour the inert gas into the stirred tank in S1, so that the air pressure in the stirred tank is 3-4MPa; finally, stir the raw ...

Embodiment 1

[0043] The environmental-friendly water-based adhesive is made into a round rod through a processing device, and the environmentally-friendly water-based adhesive will become viscous after being heated; the environmentally-friendly water-based adhesive is composed of the following raw materials in parts by weight: 50 parts of modified starch, EVA 30 parts of latex, 25 parts of epoxy resin, 15 parts of sodium bicarbonate, 5 parts of gelatin, 4 parts of moisture-proof agent and 4 parts of tackifier; The surrounding humidity of agent storage is 30%, and it is a ventilated environment.

Embodiment 2

[0045] The environmentally friendly water-based adhesive is made into a round rod through a processing device, and the environmentally friendly water-based adhesive will become viscous after being heated; the environmentally friendly water-based adhesive is composed of the following raw materials in parts by weight: 60 parts of modified starch, EVA 40 parts of latex, 27 parts of epoxy resin, 16 parts of sodium bicarbonate, 6 parts of gelatin, 5 parts of moisture-proof agent and 4.5 parts of tackifier; The surrounding humidity of agent storage is 33%, and it is a ventilated environment.

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Abstract

The invention relates to the technical field of water-based adhesives, in particular to an environment-friendly water-based adhesive and a preparation process thereof. The environment-friendly water-based adhesive is made into a round bar shape through a processing device, and the environment-friendly water-based adhesive becomes viscous after being heated; the environment-friendly water-based adhesive is prepared from the following raw materials in parts by weight: 50-70 parts of modified starch, 30-50 parts of EVA latex, 25-30 parts of epoxy resin, 15-17 parts of sodium bicarbonate, 5-7 parts of gelatin, 4-6 parts of a moisture-proof agent and 4-5 parts of a tackifier. The storage temperature of the environment-friendly water-based adhesive is 50 DEG C or below, the ambient humidity for storage of the environment-friendly water-based adhesive is 30-35%, and the environment-friendly water-based adhesive is a ventilated environment; and according to the environment-friendly water-based adhesive, vacuum air holes are formed in the environment-friendly water-based adhesive through sodium bicarbonate to be matched with the bonding performance of the environment-friendly water-based adhesive, so that the bonding effect of the environment-friendly water-based adhesive is improved, and meanwhile the environment-friendly water-based adhesive has the advantages of being convenient to use, environmentally friendly and capable of saving energy.

Description

technical field [0001] The invention relates to the technical field of water-based adhesives, in particular to an environment-friendly water-based adhesive and a preparation process thereof. Background technique [0002] Water-soluble adhesive is actually a kind of raw additive. When it is in a raw state, it has no viscosity. Only when it is heated to a certain temperature on the paste line, can it become a strong adhesive; water-soluble Adhesives dry or bond primarily by absorbing moisture from the surface. The raw solid starch in the adhesive gelatinizes and absorbs water on the paste line, and the bonding time is about a few seconds to one minute; the environmentally friendly water-based adhesive is used for glulam boards, solid wood dining tables, dining chairs, and solid wood doors , wooden musical instruments, wooden handicrafts, bamboo products, etc., suitable for the splicing of hardwoods such as pestle wood, ash, beech, etc. It has high adhesive strength, excellen...

Claims

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Application Information

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IPC IPC(8): C09J103/04C09J123/08C09J163/00C09J189/00C09J11/04C09J5/02C09J5/06
CPCY02W30/91
Inventor 李文赵玮
Owner SHANGHAI JINGTAN CHEM CO LTD