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Konjac adhesive and preparation method thereof

A technology of adhesives and konjac, applied in the direction of adhesives, adhesive types, grafted polymer adhesives, etc., can solve the problems of reduced production costs, poor water resistance, weak adhesion, etc.

Active Publication Date: 2013-12-04
四川东方魔力生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with the existing technology, the production cost is greatly reduced by using only konjac powder instead of fine konjac powder, and at the same time overcomes the shortcomings of existing products such as poor water resistance, weak adhesion and production technology

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] 1) Oxidation treatment of konjac flying powder: specifically, disperse 400kg of konjac flying powder in 400kg of tap water, add 0.08kg of ferrous sulfate solution, add 15L of hydrogen peroxide after the dispersion is uniform, and oxidize at 48°C for 4 hours;

[0023] 2) Add 1.6kg of ammonium persulfate after oxidation, and keep warm at 50°C for 0.5 hours;

[0024] 3) Using 10% sodium hydroxide solution to adjust the pH value of the system to 6.0-6.5;

[0025] 4) Slowly add 12kg of acrylamide (after adding 80kg of water to dissolve) and react for 1 hour;

[0026] 5) Add 2.0 kg of ammonium persulfate again, add 1 kg of preservative sodium benzoate after reacting for 5-20 minutes, and heat up to 60°C for 3.0 hours, then cool down to 50°C;

[0027] 6) Adjust the pH of the solution to about 3.5, add 120kg of polyvinyl alcohol solution (12% by mass), and blend for 1 hour at 50°C;

[0028] 7) Adjust the pH to about 6.0, add 2L of glyoxal, keep the system temperature between ...

Embodiment 2

[0032] 1) Oxidation treatment of konjac flying powder: specifically, disperse 400kg of konjac flying powder in 400kg of tap water, add 0.2kg of ferrous sulfate solution, add 8L of hydrogen peroxide after the dispersion is uniform, and oxidize at 48°C for 1 hour;

[0033] 2) Add 0.8 kg of ammonium persulfate after oxidation, and keep warm at 50° C. for 0.5 hours;

[0034] 3) Using 10% sodium hydroxide solution to adjust the pH value of the system to 6.0-6.5;

[0035] 4) Slowly add 12kg of acrylamide (after adding 80kg of water to dissolve) and react for 1 hour;

[0036] 5) Add 2.0 kg of ammonium persulfate again, add 1 kg of preservative sodium benzoate after reacting for 5 minutes, and raise the temperature to 60°C for 0.5-3.0 hours, then cool down to 50°C;

[0037] 6) Adjust the pH of the solution to about 3.5, add 120kg of polyvinyl alcohol solution (12% by mass), and blend for 1 hour at 50°C;

[0038] 7) Adjust the pH to about 6.0, add 2L of glyoxal, keep the system tempe...

Embodiment 3

[0042] 1) Oxidation treatment of konjac fly powder: specifically, disperse 400kg of konjac fly powder in 400kg of tap water, add 0.12kg of ferrous sulfate solution, add 10L of hydrogen peroxide after the dispersion is uniform, and oxidize at 48°C for 2.5 hours;

[0043] 2) Add 1.2kg of ammonium persulfate after oxidation, and keep warm at 50°C for 0.5 hours;

[0044] 3) Using 10% sodium hydroxide solution to adjust the pH value of the system to 6.0-6.5;

[0045] 4) Slowly add 12kg of acrylamide (after adding 80kg of water to dissolve) and react for 1 hour;

[0046] 5) Add 2.0 kg of ammonium persulfate again, add 1 kg of preservative sodium benzoate after reacting for 10 minutes, and raise the temperature to 60°C for 2.0 hours, then cool down to 50°C

[0047] 6) Adjust the pH of the solution to about 3.5, add 120kg of polyvinyl alcohol solution (12% by mass), and blend for 1 hour at 50°C;

[0048] 7) Adjust the pH to about 6.0, add 2L of glyoxal, keep the system temperature bet...

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PUM

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Abstract

The invention relates to konjac adhesive and a preparation method thereof. The konjac adhesive comprises konjac flying powder which is used as raw materials, and the raw materials are prepared through the processes of chemical oxidation, stem grafting, blending, and crosslinking recombination denaturation. The prepared raw materials comprise, by weight, 20-400 parts of the konjac flying powder, 20-400 parts of water, 0.01-0.2 part of ferrous sulfate, 0.4-16.7 parts of hydrogen peroxide, 0.14-3.6 parts of ammonium persulfate, 0.6-12 parts of acrylamide, 0.05-1 part of sodium benzoate, 0.7-14.4 parts of polyving alcohol, 0.1-2.3 parts of glyoxal, and 8.4-170 parts of polyurethane. The konjac adhesive has the water resisting property and has no formyl group, can meet the requirement for II-type wood adhesive performance, and can completely meet the LYY 1601-2002 standard request. Compared with the prior art, the konjac adhesive and the preparation method thereof have the advantages that production cost is greatly reduced, and the defects of the bad water resisting property and poor adhesive strength of existing products are overcome.

Description

technical field [0001] The invention belongs to the technical field of adhesives and production techniques thereof, and specifically provides an adhesive prepared by using konjac flying powder and a preparation method thereof. Background technique [0002] As one of the four major materials (steel, cement, wood, plastic), wood is the only green material and biological resource that can be regenerated and recycled. Its processing energy consumption is small, and its load on the environment is small. It is a truly environmentally friendly material. The wood-based panel industry is the most widely used field of wood. Its development is inseparable from adhesives and bonding technology. Adhesives have become a key link in determining the development level of the wood-based panel industry. The application of adhesives in the wood-based panel industry has effectively improved the comprehensive utilization of wood, such as laminated wood, finger-jointed wood, recombined wood, etc.,...

Claims

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Application Information

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IPC IPC(8): C09J151/02C09J175/04C08F251/00C08F220/56
Inventor 钟耕巩桥
Owner 四川东方魔力生物科技有限公司