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Starch adhesive for wall paper and preparation method thereof

A starch adhesive, wallpaper technology, applied in the directions of starch-derived adhesives, adhesives, adhesive types, etc., can solve the problems of unstable viscosity, slow drying speed, poor bonding strength, etc.

Inactive Publication Date: 2012-03-21
ZHANGJIAGANG LUYUAN STARCH FACTORY
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  • Summary
  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problems of unstable viscosity, slow drying speed and poor bonding strength in existing wallpaper starch adhesives, and provide a kind of adhesive with strong adhesive force, good fluidity, non-toxic and tasteless, and fast drying speed. Starch adhesive for wallpaper

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] (1) Preparation of starch glue

[0015] According to a certain proportion, add 100 parts of starch into the reactor and stir to prepare about 40% starch emulsion, add 2.2 parts of potassium permanganate solution, adjust the pH value, filter and wash the starch emulsion to neutrality, and obtain Add water to the filter cake and stir to add 2 parts of initiator, dissolve and gelatinize with 10 parts of sodium hydroxide, after 20 minutes, add 2 parts of borax and stir to mix for later use.

[0016] (2) Preparation of urea-formaldehyde glue

[0017] Add 1.8 parts of formaldehyde into the reactor in a certain proportion and add 0.3 hexamethylenetetramine dropwise to adjust the pH value while stirring. PH value, add 0.2 parts of formaldehyde and cool down to about 45°C for later use.

[0018] (3) Preparation of starch adhesive

[0019] In the process of adding and stirring the undischarged starch glue in the reactor at about 45°C, add 5% urea-formaldehyde glue and stir for...

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Abstract

The invention relates to a starch adhesive for wall paper and a preparation method thereof. The starch adhesive for wall paper consists of the following raw materials in percentage by weight: 100 percent of starch, 2.2-2.4 percent of potassium permanganate, 1.8-2.0 percent of initiator, 10-15 percent of sodium hydroxide, 1.0-2.0 percent of borax, 5-10 percent of flowable agent, 570-600 percent of water and 5-8 percent of urea-formaldehyde glue. The starch adhesive for wall paper has the characteristics of strong bonding force, high flowability, nontoxicity, odorlessness, high drying speed and the like.

Description

technical field [0001] The invention relates to a starch adhesive for wallpaper and a preparation method thereof, belonging to the technical field of compound modified starch. Background technique [0002] Starch adhesives have been used more and more widely as general-purpose natural adhesives. This is mainly based on two reasons. One is that starch resources are abundant, cheap, non-toxic, odorless, and pollution-free; Petroleum-based chemical products pose a threat, so many companies are looking for substitutes, and the starch adhesive used in the wallpaper industry as wallpaper adhesive has unstable viscosity, slow drying speed, and poor bonding strength. and other problems, and through physical and chemical methods or biochemical methods to change the structure, physical properties and chemical properties of starch, there are a variety of modified corn starch adhesives with specific properties and uses. The corn starch adhesive has high bonding strength and weight Ligh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J103/10C09J161/24C08B31/18C08G12/12
Inventor 施建华
Owner ZHANGJIAGANG LUYUAN STARCH FACTORY
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