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Alkali gelatinized wet glue as well as preparation method and application thereof

A gelatinization and wet glue technology, which is applied in the direction of starch-derived adhesives, adhesive additives, non-polymer adhesive additives, etc., can solve the problems of high cost, poor thermal gelatinization of wet glue, and easy edge warping of wall coverings and other problems, to achieve the effect of high adhesion, good performance, and not easy to warp

Active Publication Date: 2021-09-24
广东蓝羽新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The wet glue made by thermal gelatinization process is simple and convenient to operate, easy for workers to use, and the production cost is low. It is made by directly mixing starch and water evenly, adding additives, stirring and heating up to gelatinize; but thermal paste Wet glue has poor gel opening performance and cannot be used with water, or it is difficult to open the glue after water is added, or the glue is rough and not smooth enough after the glue is opened, the adhesive performance is average, and the thermal gelatinization process cannot produce more than 30% high solids High content of starch wet glue, especially when bonding some relatively thick wall coverings, it is easy to warp, and it is prone to mildew and water phenomenon, so the requirements for anti-corrosion and anti-fungal agents are high
[0004] The alkali gelatinization process is a process of gelatinizing starch with an alkaline gelatinizer at room temperature. At present, some wet glues for wallpaper and wall coverings made by the alkali gelatinization process have a higher viscosity than thermal gelatinized starch adhesives. Viscosity, but its preparation operation is difficult, there are many processes, and there are many precautions and tracking points, so the operation requirements for workers are also high, and the production cost is also high

Method used

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  • Alkali gelatinized wet glue as well as preparation method and application thereof
  • Alkali gelatinized wet glue as well as preparation method and application thereof
  • Alkali gelatinized wet glue as well as preparation method and application thereof

Examples

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preparation example Construction

[0071] According to an embodiment of the present invention, the preparation method of the alkali-gelatinized wet glue comprises the following steps:

[0072] Step 1. Add acetylated starch into water, add water-soluble inorganic salt, and stir to obtain dispersed materials;

[0073] Step 2, adding part of the alkaline gelatinizer to the dispersed material and stirring to obtain the pregelatinized dispersed material;

[0074] Step 3, adding hydroxypropyl distarch phosphate to the pregelatinized dispersed material, adding the remaining alkaline gelatinizer, and stirring to obtain the gelatinized material;

[0075] Step 4, adding an acid neutralizer to the gelatinized material, adjusting the pH, adding an auxiliary agent, and stirring to obtain the alkali gelatinized wet glue of the present invention.

[0076] In order to disperse or dissolve the added raw material components in the material system more easily, the raw material components to be added can be pre-dispersed or disso...

Embodiment 1

[0090] In this example, the alkali gelatinized wet glue is made by using an alkaline gelatinizer under certain conditions, and a variety of modified starches are made through an alkali gelatinization process, wherein the alkali gelatinized wet glue is made of the following raw materials in parts by weight Components made:

[0091] 7 parts of acetylated starch, 16 parts of hydroxypropyl distarch phosphate, 5 parts of water-soluble inorganic salt, 1.5 parts of alkaline gelatinizer, 1.7 parts of acid neutralizer, 0.5 part of whitening agent, 0.3 part of humectant, 0.1 parts of freezing agent, 1.4 parts of anti-corrosion and anti-mold agent, and 66.5 parts of water. Among them, the water-soluble inorganic salt is sodium chloride; the alkaline pasting agent is sodium hydroxide; the acid neutralizing agent is hydrochloric acid; the whitening agent is titanium dioxide; the moisturizing agent is glycerin; Mixture; antiseptic antifungal agent is a mixture of sodium diacetate and Katho...

Embodiment 2

[0098] In this example, the alkali gelatinized wet glue is made by using an alkaline gelatinizer under certain conditions, and a variety of modified starches are made through an alkali gelatinization process, wherein the alkali gelatinized wet glue is made of the following raw materials in parts by weight Components made:

[0099]13 parts of acetylated starch, 7 parts of hydroxypropyl distarch phosphate, 5 parts of water-soluble inorganic salt, 1.0 part of alkaline gelatinizer, 1.2 parts of acid neutralizer, 0.5 part of whitening agent, 0.5 part of humectant, 0.1 parts of freezing agent, 1.0 parts of anti-corrosion and anti-mold agent, and 70.7 parts of water. Wherein, the water-soluble inorganic salt is sodium chloride; the alkaline gelatinizer is calcium hydroxide; the acid neutralizer is oxalic acid; the whitening agent is talcum powder; the humectant is carboxymethyl modified starch; the antifreeze agent is propylene glycol; The antiseptic and antifungal agent is organosi...

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Abstract

The embodiment of the invention relates to alkali gelatinized wet glue as well as a preparation method and application thereof. The alkali gelatinized wet glue is prepared from the following raw material components in parts by weight: 7-25 parts of acetylated starch, 4-16 parts of hydroxy propyl distarch phosphate, 1-10 parts of water-soluble inorganic salt, 0.2-5 parts of an alkali gelatinizing agent, 0.2-5 parts of an acid neutralizing agent, 0.4-10 parts of an auxiliary agent and 60-80 parts of water. The alkali gelatinized wet glue prepared by the preparation method disclosed by the invention is superior to wet glue prepared by a hot gelatinizing process in the aspects of corrosion and mildew resistance, bonding performance, glue failure performance, storage stability, anti-freezing performance and the like.

Description

technical field [0001] The invention belongs to the field of adhesives, and relates to a novel wallpaper / wall covering wet glue, in particular to a novel alkali-gelatinized wallpaper and wall covering wet glue and its preparation method and application. Background technique [0002] In recent years, wallpaper and wall coverings have become the first choice for beautifying the indoor environment. Starch adhesives are also widely used in the market as adhesives for bonding wallpaper and wall coverings. [0003] Wall paper and wall cloth wet glue can be divided into two types according to the process preparation method: thermal gelatinization wet glue and alkali gelatinization wet glue. The two preparation processes have their own advantages, but each has some disadvantages. Thermal gelatinization, that is, directly heat boiled starch to obtain an adhesive. The wet glue made by thermal gelatinization process is simple and convenient to operate, easy for workers to use, and the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J103/06C09J11/04C09J11/06C09J11/08
CPCC09J103/06C09J11/04C09J11/06C09J11/08C08K2201/014C08K2003/2241C08L2205/025C08L2205/03C08K2003/262C08L3/06C08K13/02C08K3/16C08K3/22C08K5/053C08L1/286C08K3/34C08L23/0853C08K3/26
Inventor 詹深圳
Owner 广东蓝羽新材料科技有限公司
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