Starch adhesive

A starch adhesive, starch technology, applied in the direction of starch adhesives, adhesives, adhesive additives, etc., can solve the problems of starch adhesives such as poor water resistance, slow natural drying rate, short storage period, etc., and achieve stable water resistance , Easy control of operating conditions, long storage period

Inactive Publication Date: 2016-05-18
姚晓明
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problems of poor water resistance, slow natural drying rate and short storage period of starch adhesives

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A kind of starch adhesive, the steps are as follows:

[0016] 1) Add 20kg of deionized water, 2.1kg of polyvinyl alcohol and 0.02kg of n-octanol into a reactor with a stirrer, raise the temperature to 88-92°C, and keep the temperature for 30 minutes to dissolve all the polyvinyl alcohol;

[0017] 2) Cool down to 52-57°C, add 30kg of starch, 0.1kg of copper sulfate, 0.01kg of manganese acetylacetonate, stir evenly, add 8.5kg of sulfur peroxide, and react for 60-80min under constant stirring;

[0018] 3) Add 8kg of sodium hydroxide (30% solution), adjust the pH value to 9-10, add 1.1kg of melamine, and react for 60-80min;

[0019] 4) Add 0.25kg sodium thiosulfate (30%) solution, stir evenly, add 78kg deionized water, stir for 30-40min, make the solution translucent, then add 0.5kg polyacrylonitrile, 0.8kg diisocyanate, Reaction 40-60min;

[0020] 5) Add 0.9kg of potassium sorbate and 1.1kg of kaolin, and stir for 30-40 minutes to obtain the product.

Embodiment 2

[0022] A kind of starch adhesive, the steps are as follows:

[0023] 1) Add 22kg of deionized water, 2.3kg of polyvinyl alcohol and 0.02kg of n-octanol into a reaction kettle with a stirrer, raise the temperature to 88-92°C, and keep the temperature for 30 minutes to completely dissolve the polyvinyl alcohol;

[0024] 2) Cool down to 52-57°C, add 30kg of starch, 0.11kg of copper sulfate, 0.01kg of manganese acetylacetonate, stir evenly, add 9.2kg of sulfur peroxide, and react for 60-80min under constant stirring;

[0025] 3) Add 9kg of sodium hydroxide (30% solution), adjust the pH value to 9-10, add 1.8kg of melamine, and react for 60-80min;

[0026] 4) Add 0.31kg sodium thiosulfate (30%) solution, stir evenly, add 90kg deionized water, stir for 30-40min, make the solution translucent, then add 0.7kg polyacrylonitrile, 1.0kg diisocyanate, Reaction 40-60min;

[0027] 5) Add 1.1kg potassium sorbate and 1.3kg kaolin, and stir for 30-40min to obtain the product.

Embodiment 3

[0029] A kind of starch adhesive, the steps are as follows:

[0030] 1) Add 27kg of deionized water, 2.5kg of polyvinyl alcohol and 0.02kg of n-octanol into a reaction kettle with a stirrer, raise the temperature to 88-92°C, and keep the temperature for 30 minutes to completely dissolve the polyvinyl alcohol;

[0031] 2) Cool down to 52-57°C, add 30kg of starch, 0.11kg of copper sulfate, 0.01kg of manganese acetylacetonate, stir evenly, add 10.3kg of sulfur peroxide, and react for 60-80min under constant stirring;

[0032] 3) Add 10kg of sodium hydroxide (30% solution), adjust the pH value to 9-10, add 2.5kg of melamine, and react for 60-80min;

[0033] 4) Add 0.37kg sodium thiosulfate (30%) solution, stir evenly, add 108kg deionized water, stir for 30-40min, make the solution translucent, then add 0.9kg polyacrylonitrile, 1.2kg diisocyanate, Reaction 40-60min;

[0034] 5) Add 1.3kg of potassium sorbate and 1.5kg of kaolin, and stir for 30-40 minutes to obtain the product. ...

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PUM

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Abstract

The invention discloses a starch adhesive. The starch adhesive is prepared through the steps of firstly, adding deionized water, polyvinyl alcohol and n-octanol to a reaction kettle with a stirrer, raising the temperature to 88-92 DEG C, and keeping the temperature for 30 min so that polyvinyl alcohol can be completely dissolved; secondly, cooling the mixture to 52-57 DEG C, adding starch, copper sulfate and manganese acetyllacetonate, adding sulfur peroxide after the mixture is evenly stirred, and making the mixture react for 60-80 min under unceasing stirring; thirdly, adding sodium hydroxide (30% solution), regulating the PH value to 9-10, adding melamine, and making the mixture react for 60-80 min; fourthly, adding a sodium thiosulfate (30%) solution, adding the rest of deionized water after the mixture is evenly stirred, conducting stirring for 30-40 min so that the solution can be in the semitransparent state, and then adding polyacrylonitrile and diisocyanate to react for 40-60 min; fifthly, adding potassium sorbate and kaolin, and conducting stirring for 30-40 min to obtain the product. The product is strong in adhesive strength, stable in water resistance, long in storage period, high in drying speed and good in permeability and mobility.

Description

technical field [0001] The invention relates to an adhesive, especially a starch adhesive. Background technique [0002] Starch is a cheap and renewable natural polymer material, non-toxic and easily biodegradable. It has received extensive attention in recent years. How to develop and apply starch resources in depth and breadth has become a topic of widespread concern to scholars at home and abroad. Starch has attracted people's attention due to its wide source, low price, strong regeneration, and reduced environmental pollution. However, it has poor fluidity and permeability as an adhesive, and its performance is extremely poor as an adhesive directly. If starch is modified to a limited extent by physical, chemical or biological methods to change its molecular structure and properties, the solubility and viscosity of starch can be controlled. Starch molecules contain glycosidic bonds and hydroxyl groups that are prone to chemical reactions, so starch It can react chemica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J103/02C09J175/04C09J11/04C09J11/06C09J11/08
Inventor 姚晓明
Owner 姚晓明
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