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Special corn biomass-based adhesive and method for preparing same

A technology based on adhesives and biomass, applied in the direction of adhesives, graft polymer adhesives, adhesive types, etc., can solve the problems of poor viscosity stability and poor adhesive fluidity, and achieve good viscosity stability and shelf life. The effect of long, good flow and transparency

Inactive Publication Date: 2010-09-15
吉林省轻工业设计研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a special corn biomass-based adhesive and its preparation method to solve the problems of poor adhesive fluidity and poor viscosity stability existing in traditional biomass-based adhesives produced with starch as the main raw material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] It is made by the formula and method of the following mass-to-number ratios:

[0029] formula:

[0030] Waxy Corn Oxidized-Hydroxypropyl Starch 80 parts

[0031] 150 parts of deionized water

[0032] Sodium hydroxide 3 parts

[0033] 10 parts vinyl acetate

[0034] 4 parts polyvinyl alcohol

[0035] 0.5 parts of boric acid

[0036] 3 parts urea

[0037] 2 parts preservative;

[0038] The waxy corn oxidized-hydroxypropyl starch in the formula is made by the following method:

[0039] (a) Slurry: Add NaOH lye with a concentration of 2% in the closed reaction kettle, dissolve the waxy cornstarch and lye in the dilute lye in the reaction kettle at a ratio of 1:2 and stir until evenly Then add 5% lye to adjust the pH of the starch milk to 10;

[0040] (b) Oxidation reaction: The temperature of the closed reaction kettle is raised to 45-50°C through water circulation, and H is added in a ratio of 1:10 to the lye. 2 o 2 , after stirring and reacting at a constant sp...

Embodiment 2

[0048] It is made by the formula and method of the following mass-to-number ratios:

[0049] formula:

[0050] Waxy Corn Oxidized-Hydroxypropyl Starch 100 Parts

[0051] 200 parts of deionized water

[0052] Sodium hydroxide 3.5 parts

[0053] Vinyl acetate 12.5 parts

[0054] 6 parts polyvinyl alcohol

[0055] 0.7 parts of boric acid

[0056] 4 parts urea

[0057] 2.5 parts of preservatives;

[0058] The waxy corn oxidized-hydroxypropyl starch in the formula is made by the following method:

[0059] (a) Slurry: Add NaOH lye with a concentration of 2% in the closed reaction kettle, dissolve the waxy cornstarch and lye in the dilute lye in the reaction kettle at a ratio of 1:2.3 and stir until evenly Then add 5% lye to adjust the pH of the starch milk to 10.2;

[0060] (b) Oxidation reaction: The temperature of the closed reaction kettle is raised to 47°C through water circulation, and H is added in a ratio of 1:10 to the lye 2 o 2 , after stirring and reacting at a ...

Embodiment 3

[0068] It is made by the formula and method of the following mass-to-number ratios:

[0069] formula:

[0070] Waxy Corn Oxidized-Hydroxypropyl Starch 120 Parts

[0071] 250 parts of deionized water

[0072] 4 parts sodium hydroxide

[0073] Vinyl acetate 15 parts

[0074] 8 parts polyvinyl alcohol

[0075] 1 part boric acid

[0076] urea 5 parts

[0077] 3 parts preservative;

[0078] The waxy corn oxidized-hydroxypropyl starch in the formula is made by the following method:

[0079] (a) Slurry: Add KOH lye with a concentration of 2% in the closed reaction kettle, dissolve the waxy cornstarch and lye in the dilute lye in the reaction kettle at a ratio of 1:2.5 and stir until evenly Then add 5% lye to adjust the pH of the starch milk to 10.5;

[0080] (b) Oxidation reaction: the closed reaction kettle is heated to 50°C through water circulation, and H is added in a ratio of 1:10 to lye 2 o 2 , after stirring and reacting at a constant speed for 6 hours, add 2% sulfu...

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PUM

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Abstract

The invention relates to a special corn biomass-based adhesive, and belongs to the field of deep processing of corn starch. The adhesive is prepared from the following components in part by mass: 80 to 120 parts of waxy corn oxidized-hydroxypropyl starch, 150 and 250 parts of deionized water, 3 to 4 parts of sodium hydroxide, 10 to 15 parts of vinyl acetate, 4 to 8 parts of polyvinyl alcohol, 0.5 to 1 part of boric acid, 3 to 5 parts of urea and 2 to 3 parts of preservative. The method for preparing the adhesive comprises pulp blending, gelatinization and graft copolymerization. The adhesive of the invention has the advantages of good viscosity stability, long shelf life and high fluidity and transparency. In the adhesive produced by the method, 90 percent of solids are degradable, and if the special corn biomass-based adhesive of the invention is used for replacing the polymer adhesive, pollution can be greatly reduced, and the environmental protection requirements on the production process and the using process are met.

Description

technical field [0001] The invention belongs to the field of corn starch deep processing. Background technique [0002] Since the beginning of the 21st century, the variety and usage of adhesive products have grown rapidly with the huge market demand. It has been widely used in people's daily life. Adhesives are inseparable from almost anyone and any item, and its role and benefits are becoming more and more significant, and it is playing an increasingly important role in economic development. my country's adhesive industry started in the 1950s. Since the 1990s, the industry has developed by leaps and bounds. Adhesives have become an important product in the field of fine chemicals. Their application fields have gradually expanded and their technical content has been further improved. Benefits have also increased substantially. In 2007, the total output of adhesives in my country has reached more than 4 million tons, and the average annual growth rate has always remained a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J151/02C08B31/18C08B31/12
Inventor 张俊波王敏王庆华李涛魏雄师陈辉何晓宁
Owner 吉林省轻工业设计研究院
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