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A kind of environment-friendly starch adhesive and preparation method thereof

A starch adhesive, environmentally friendly technology, applied in the directions of starch-derived adhesives, adhesive types, polymer adhesive additives, etc., to achieve the effects of long storage period, good anti-refrigerating effect and uniform dispersion

Active Publication Date: 2020-09-25
宁夏吉宏环保包装科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But on the whole, the bonding strength, moisture resistance, and long-term aging resistance of starch adhesives need to be further improved.

Method used

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  • A kind of environment-friendly starch adhesive and preparation method thereof
  • A kind of environment-friendly starch adhesive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] An environmentally friendly starch adhesive is characterized in that it comprises the following parts by weight: 100 parts of dry cornstarch, 350 parts of deionized water, 0.6 part of sodium percarbonate, 0.03 part of catalyst, 1 part of stabilizer, modified ring 30 parts of oxygen resin, 4 parts of bentonite, 7 parts of hydrotalcite, 7 parts of calcium carbonate, 0.4 parts of alum, 8 parts of polyvinyl alcohol, 1 part of sodium tripolyphosphate and 2 parts of sodium carboxymethyl cellulose.

[0031] (1) After each component is weighed according to the formula, it is for subsequent use;

[0032](2) Add 20 g of E-44 epoxy resin and 10 g of polyethylene glycol 400 into a stirred tank at 65° C. and stir for 40 min to obtain modified epoxy resin;

[0033] (3) Put 0.4g of alum, 8g of polyvinyl alcohol, 1g of sodium tripolyphosphate and 2g of sodium carboxymethyl cellulose into a stirring tank, add water until they are all dissolved; then add 4g of bentonite, and connect the ...

Embodiment 2

[0037] An environmentally friendly starch adhesive is characterized in that it comprises the following parts by weight: 100 parts of dry cornstarch, 400 parts of deionized water, 1 part of sodium percarbonate, 0.03 parts of catalyst, 2 parts of stabilizer, epoxy resin 30 parts, 5 parts of bentonite, 7 parts of hydrotalcite, 10 parts of calcium carbonate, 0.8 parts of alum, 7 parts of polyvinyl alcohol, 2 parts of sodium tripolyphosphate and 4 parts of sodium carboxymethyl cellulose.

[0038] The preparation method is the same as in Example 1.

Embodiment 3

[0040] An environmentally friendly starch adhesive is characterized in that it comprises the following parts by weight: 100 parts of dry cornstarch, 400 parts of deionized water, 2 parts of sodium percarbonate, 0.02 parts of catalyst, 1 part of stabilizer, epoxy resin 30 parts, 4 parts of bentonite, 7 parts of hydrotalcite, 10 parts of calcium carbonate, 1 part of alum, 6 parts of polyvinyl alcohol, 2 parts of sodium tripolyphosphate and 3 parts of sodium carboxymethyl cellulose.

[0041] The self-drying time, peel strength and storage period of the adhesive prepared in the above examples and the adhesive prepared in the patent CN201510471398.1 were compared, and the results are shown in Table 1.

[0042] It can be seen from the data in the table that the adhesive prepared by the present invention is obviously better than the prior art in terms of self-drying time, storage time and peel strength.

[0043] Table 1. Performance parameters of environmentally friendly starch adhes...

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PUM

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Abstract

The invention relates to an environmentally-friendly starch binder. The binder is composed of the following components, in parts by weight: 100 parts of dry corn starch, 300-500 parts of deionized water, 0.5-3 parts of sodium percarbonate, 0.01-0.05 part of a catalyst, 0.5-3 parts of a stabilizer, 20-45 parts of epoxy resin, 3-5 parts of bentonite, 6-10 parts of hydrotalcite, 6-10 parts of calciumcarbonate, 0.2-3 parts of alum, 5-10 parts of polyvinyl alcohol, 0.2-3 parts of sodium tripolyphosphate, and 1-5 parts of sodium carboxymethylcellulose. The binder is characterized in that the catalyst is a polyoxometallate type ionic liquid. The binder prepared by the invention has the advantages of stronger bonding force, a better anti-condensation effect and a longer storage period.

Description

technical field [0001] The invention belongs to the technical field of adhesives, and in particular relates to an environmentally friendly starch adhesive and a preparation method thereof. Background technique [0002] Cardboard is mainly used to make carton packaging items, which is convenient for storage and transportation. Cardboard is generally made of two or more layers of paper bonded together, such as single-sided corrugated paper, composite corrugated paper, etc. The adhesive used for cardboard is generally starch adhesive. Starch adhesive is generally obtained by dissolving starch in water, oxidizing it with potassium permanganate, and then adding caustic soda and borax, etc., but potassium permanganate is obtained under alkaline conditions. It is easy to generate dark manganese dioxide, which will have a certain impact on the environment, and caustic soda and borax will also cause damage to human health. More importantly, the starch adhesive produced by this meth...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J103/10C09J163/00C09J187/00C09J129/04C09J11/04C09J11/08C08B31/18C08G81/00
CPCC08B31/18C08G81/00C08K2003/265C08K2003/3045C08K2003/324C08L2205/035C09J11/04C09J11/08C09J103/10C08L63/00C08L87/005C08L29/04C08L1/286C08K3/26C08K3/346C08K3/30C08K3/32
Inventor 不公告发明人
Owner 宁夏吉宏环保包装科技有限公司