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Method for preparing compound modified peanut protein adhesive

A peanut protein and compound modification technology, applied in the preparation of animal glue or gelatin, protein adhesives, adhesives, etc., can solve the problems of high water content, long hot pressing time, high viscosity, and achieve good bonding performance, The effect of water resistance

Inactive Publication Date: 2010-12-01
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The viscosity of this glue is still high, so it is only suitable for making plywood. If the glue is adjusted to 30% solids, although it can be used to make particleboard and fiberboard, but because the water content is too high, the heat-pressing time is too long

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Add 3kg of water into the reactor, and add 1kg of peanut protein powder while stirring to form a uniform peanut protein powder slurry, and slowly drop into 0.5kg of 10% sodium hydroxide solution by mass. Stir for 60 minutes, add 0.01 kg of powdered calcium hydroxide, and stir the slurry evenly to obtain the peanut protein adhesive. Its bonding strength is 0.9342MPa. The water-resistant bonding strength is 0.1039MPa.

Embodiment 2

[0026] Add 3kg of water into the reactor, and add 1kg of peanut protein powder while stirring to form a uniform peanut protein powder slurry, slowly drop into 1kg of potassium hydroxide solution with a concentration of 10% by mass. After stirring for 10 minutes, 0.2 kg of sodium dodecylbenzenesulfonate was added. After stirring for 10 minutes, 0.5 kg of urea was added. Stir for 30 minutes, add 0.1 kg of calcium hydroxide, and stir the slurry evenly to obtain the peanut protein adhesive. Its bonding strength is 1.968MPa. The water-resistant bonding strength is 0.5142MPa.

Embodiment 3

[0028] Add 5kg of water into the reaction vessel, add 1kg of peanut protein powder while stirring to form a uniform peanut protein powder slurry, and slowly drop into 1kg of sodium hydroxide solution with a concentration of 15% by mass. After stirring for 25 minutes, 0.2 kg of sodium dodecylbenzenesulfonate was added. Stir for 30 minutes, add 1 kg of urea, stir for 10 minutes, add 1 kg of calcium hydroxide, and stir the slurry evenly to obtain the peanut protein adhesive. Its bonding strength is 2.301MPa. The water-resistant bonding strength is 0.5236MPa.

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Abstract

The invention discloses a method for preparing a compound modified peanut protein adhesive. The method comprises the following step of: adding calcium hydroxide and / or sodium dodecyl benzene sulfonate and / or urea serving as a modifier into peanut protein powder serving as a raw material respectively to obtain the peanut protein adhesive. Compared with the conventional trialdehyde adhesive, the adhesive has the advantages of no emission of formaldehyde, higher bonding strength, environmental friendliness and better social and environmental benefits.

Description

technical field [0001] The invention relates to a preparation method of a composite modified peanut protein adhesive. It belongs to the field of organic chemical technology. Background technique [0002] With the rapid development of my country's real estate industry, building decoration industry, and furniture manufacturing industry and the substantial improvement of people's living standards, the wood-based panel industry has developed rapidly, and the consumption of wood adhesives has increased sharply every year. Among them, "trialdehyde" glue occupies the largest share of wood adhesives. More than 80% of the total output. [0003] Formaldehyde-based adhesives that are currently used more often have a fatal flaw. Since one of its main raw materials is formaldehyde, harmful gases such as free formaldehyde will inevitably be released during the production and use of wood products bonded with it, which is dangerous. The physical health of product producers and product cons...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J189/00C09J11/04C09J11/06
Inventor 方岩雄谢凯宏吴昭俏陈旭东
Owner GUANGDONG UNIV OF TECH
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