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Environmentally-friendly starch adhesive

An environmentally friendly, starch adhesive technology, applied in the directions of starch adhesives, adhesive types, etc., can solve the problems of cumbersome preparation process of environmentally friendly adhesives, inability to reduce cost and price, and achieve low price and good adhesiveness. , excellent water resistance

Inactive Publication Date: 2010-06-16
IND TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the preparation process of the above-mentioned environmentally friendly adhesive is cumbersome, and it needs to be combined with heating and cooling and chemical modification procedures, so that the cost price cannot be reduced. Therefore, the industry urgently needs to develop a low-cost and formaldehyde-free environmentally friendly adhesive.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] [embodiment 1] preparation component B

[0024] Take 60 grams of polyethylene glycol and 600 grams of water into a stirring container. In order to make the polymer dissolve in the water evenly, heat the stirring container for reaction. Cool the container at room temperature, and then add 50 grams of acrylic resin and 2 grams of boric acid in sequence to obtain component B.

Embodiment 2

[0025] [Example 2] Preparation of environment-friendly starch glue

[0026] Get 20 grams of cornstarch (component A), 75 grams of component B of Example 1 and 5 grams of hexaethoxymelamine (crosslinking agent), and stir at room temperature for 30 minutes to obtain the environmentally friendly starch glue of the present invention mixture. Take 15 grams of glue and spread it on a wooden board with a length×width×height of 30cm×30cm×0.3mm, cover it with another wooden board of the same specification, heat press the two boards at 150°C for 10 minutes, and then you can to test.

Embodiment 3

[0027] [Example 3] Preparation of environment-friendly starch glue

[0028] Get 25 grams of wheat starch (component A), 70 grams of component B of Example 1 and 5 grams of trimethoxymelamine (crosslinking agent), and stir at room temperature for 30 minutes to prepare the environment-friendly starch adhesive of the present invention . Take 15 grams of glue and spread it on a wooden board with a length×width×height of 30cm×30cm×0.3mm, cover it with another wooden board of the same specification, heat press the two boards at 130°C for 10 minutes, and then Can be inspected.

[0029] [Comparative example] Commercially available adhesive

[0030] Take commercially available urea-formaldehyde glue, melamine-formaldehyde glue, and polyvinyl acetate resin, and apply 15 grams of the above-mentioned glue on a wooden board with a length×width×height of 30cm×30cm×0.3mm, and another piece of the same specification The wooden boards are covered on the top, and the two boards are hot-press...

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Abstract

The invention provides an environment-friendly starch adhesive, which comprises a component A, a component B and a component C, wherein the component A comprises an unmodified primary starch; the component B comprises a water-soluble macromolecule, an emulsifying agent and water; and the component C comprises a cross-linking agent. The environmentally-friendly starch adhesive of the invention uses the primary starch as a raw material and does not contain a formaldehyde component so as to meet the environmentally-friendly requirement; and the environmentally-friendly starch adhesive has no harm to the human body, and can be applied to wood adhesion.

Description

technical field [0001] The present invention relates to an environment-friendly starch-based adhesive (Environment-friendly starch-based adhesive), and in particular to a formaldehyde-free environment-friendly starch-based adhesive. Background technique [0002] At present, urea-formaldehyde glue is often used as a glue in the fields of wooden furniture and building materials, joinery boards, and house decoration, but this glue will continue to emit toxic formaldehyde, which will affect human health. Therefore, there have been Many national announcements require the formaldehyde content of indoor plywood to be controlled. In order to meet the requirements of national standards, many environmentally friendly adhesives have been developed. [0003] Chinese patent CN 1462786 proposes a method for preparing a natural non-toxic adhesive, which is composed of main materials, reinforcing agents, stabilizers and other auxiliary agents. The preparation process needs to go through th...

Claims

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Application Information

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IPC IPC(8): C09J103/02
Inventor 郑旭轩蔡金英李吉祥赖庆智沈克鹏
Owner IND TECH RES INST