Environmental-friendly coating adhesive and preparation method thereof

An adhesive and environment-friendly technology, applied in coatings, paper coatings, textiles and papermaking, etc., can solve the problems of weak adhesion, poor water resistance, poor dispersibility, etc., to improve film formation, reduce production costs, The effect of improving strength and plasticity

Active Publication Date: 2018-11-23
QUFU NORMAL UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Natural products include starch and starch modified products; high molecular polymers include carboxylated styrene-butadiene latex, propylene styrene latex, polyvinyl alcohol, etc. Among them, carboxylated styrene-butadiene latex is mainly used, and other adhesives are due to their performance. Poor water resistance, weak cohesion, poor dispersion, high viscosity, easy aging and other weaknesses limit its use

Method used

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  • Environmental-friendly coating adhesive and preparation method thereof
  • Environmental-friendly coating adhesive and preparation method thereof
  • Environmental-friendly coating adhesive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 1. In a 500ml four-neck flask, add 72g of purified water, start stirring, add 100g of tapioca starch, stir to form an emulsion, slowly add 10g of glycerin into the flask, heat up to 60°C, and keep the reaction for 30min.

[0027] 2. Add 200g of purified water into a 500ml four-neck flask and turn on the stirring, add 55g of PVA, raise the temperature to 90°C, keep it warm for 30min, and prepare a PVA solution.

[0028] 3. Add 100g of the prepared starch solution and 120g of the prepared PVA solution into a 500ml four-neck flask, mix well and add glyoxal dropwise at 60°C for 60 minutes, and keep warm for 60 minutes after the addition is completed; The amount of dialdehyde added is 10% of the total mass of the starch solution and the PVA solution;

[0029] 4. After the heat preservation is completed, the temperature is raised to 70°C, and a mixed monomer composed of 1g of acrylic acid, 10g of butyl acrylate, and 5g of methyl acrylate is added dropwise, and is initiated by...

Embodiment 2

[0032] 1. In a 500ml four-neck flask, add 72g of purified water, start stirring, then add 100g of cornstarch, stir to form an emulsion, slowly add 6g of diethylene glycol into the flask, raise the temperature to 70°C, and keep the reaction for 45min.

[0033] 2. Add 200g of purified water into a 500ml four-neck flask and turn on the stirring, add 60g of PVA, raise the temperature to 95°C, keep it warm for 30min, and prepare a PVA solution.

[0034] 3. Add 100g of the prepared starch solution and 130g of the prepared PVA solution into a 500ml four-neck flask, mix well and add N-methylolacrylamide dropwise at 60°C for 50 minutes. Keep warm for 60 minutes; the amount of glyoxal added is 5% of the total mass of the starch solution and the PVA solution;

[0035] 4. After the heat preservation is completed, the temperature is raised to 80°C, and a mixed monomer composed of 1g of acrylic acid, 2g of sodium styrene sulfonate, 10g of isooctyl acrylate, and 10g of methyl methacrylate is...

Embodiment 3

[0038] 1. In a 500ml four-neck flask, add 72g of purified water, start stirring, then add 100g of tapioca starch, stir to form an emulsion, slowly add 6g of glycerin into the flask, heat up to 80°C, and keep the reaction for 45min.

[0039] 2. Add 200g of purified water into a 500ml four-neck flask and turn on the stirring, add 80g of PVA, raise the temperature to 90°C, keep it warm for 30min, and prepare a PVA solution.

[0040] 3. Add 100g of the prepared starch solution and 100g of the prepared PVA solution into a 500ml four-neck flask, mix well and add zirconium oxychloride dropwise at 60°C for 60 minutes, and keep warm for 30 minutes after the addition is completed; The amount of glyoxal added is 15% of the total mass of the starch solution and the PVA solution;

[0041] 4. After the heat preservation is completed, the temperature is raised to 70°C, and a mixed monomer composed of 1g of methacrylic acid, 5g of butyl acrylate, and 5g of isooctyl acrylate is added dropwise, a...

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PUM

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Abstract

The invention discloses an environmental-friendly coating adhesive and a preparation method thereof. The environmental-friendly coating adhesive is prepared from the following components: a starch emulsion with the mass concentration being 30 percent to 60 percent, a plasticizer, a polyvinyl acetate (PVA) solution with the mass concentration being 20 percent to 30 percent, a cross-linking agent, an initiator and a modified monomer. According to the coating adhesive provided by the invention, the adhesive property of the coating adhesive is better than the adhesive property of carboxylic butadiene-styrene latex, the coating adhesive can partially and even fully replace the carboxylic butadiene-styrene latex, and the dosage of the overall adhesive is reduced, so that the production cost of coating paper is reduced, and the non-renewable petroleum resource can be saved.

Description

technical field [0001] The invention relates to the technical field of coating adhesives, in particular to an environment-friendly coating adhesive and a preparation method. Background technique [0002] The performance of coated paper mainly depends on the coating, and the main components of the coating are pigments, adhesives and other additives and water. Adhesive is an important part of the coating, its function is to make the pigments adhere to each other, and at the same time to make the pigment and the base paper surface bond, and secondly, the adhesive can also adjust the absorption of printing ink to achieve a balance between ink solidification and ink gloss. In addition, the adhesive also acts as a protective colloid in the coating to control the stability and fluidity of the coating. Therefore, the adhesive should first have a strong cohesive force with the pigment, otherwise the surface strength of the coated paper will be insufficient, and the phenomenon of pow...

Claims

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Application Information

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IPC IPC(8): D21H19/20D21H19/58D21H21/14C08F291/08
CPCC08F251/00C08F261/04D21H19/20D21H19/58D21H21/14
Inventor 孙鹏李晓鹏禚雨均禚雨宜
Owner QUFU NORMAL UNIV
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