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Metallic ion and active compound combined modified plant albumin glue adhesive and method of producing the same

A vegetable protein and active substance technology, applied in the preparation of protein adhesives, animal glue or gelatin, and adhesives, etc., can solve the problems of pollution and low proportion, and achieve the effects of simple process, wide source and good water resistance.

Inactive Publication Date: 2009-04-08
FUJIAN AGRI & FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen from the examples of the patent that the proportion of soybean flour in the modified bean gum is low (<10%), and the content of aldehyde crosslinking agent is very high (greater than that of soybean flour), so the modified bean gum contains aldehydes, phenols, etc. and other toxic substances will still pollute the environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Add 50 parts of water into the reaction kettle with a temperature-controllable stirrer, start the stirrer, control the temperature at 20°C, slowly add 18 parts of defatted soybean flour, stir for 60 minutes, and make it evenly mixed; add 1.2 parts of concentrated hydrochloric acid and react for 2 minutes; Add 0.4 parts of 0.01g / mL ferric chloride aqueous solution, and react for 30 minutes; add 1.2 parts of acrylamide, heat up to 35°C, and react for 50 minutes; then add 3.0 parts of sodium hydroxide solution with a weight concentration of 20%, continue to stir for 20 minutes, and discharge Serve.

Embodiment 2

[0043] Add 70 parts of water into the reaction kettle with temperature controllable agitator, start the agitator, control the temperature at 30°C, slowly add 15 parts of soybean protein isolate powder, stir for 30 minutes, and make it evenly mixed; add 1.8 parts of concentrated nitric acid, and react for 1 minute Add 1.0 parts of zinc chloride aqueous solution with a content of 0.005g / mL, and react for 25 minutes; add 1.6 parts of thiourea, and react for 60 minutes; then add 5.0 parts of potassium hydroxide solution with a weight concentration of 30%, continue to stir for 30 minutes, and discharge.

Embodiment 3

[0045] Calcium oxide was added into distilled water to prepare an aqueous solution of calcium hydroxide with a content of 0.001 g / mL for later use. Add 60 parts of water into the reaction kettle with a temperature-controllable stirrer, start the stirrer, control the temperature at 35°C, slowly add 22 parts of defatted soybean flour, stir for 50 minutes, and make it evenly mixed; add 2.0 parts of concentrated hydrochloric acid, and react for 4 minutes; Add 3.0 parts of prepared calcium hydroxide aqueous solution, and react for 20 minutes; add 2.5 parts of diethylenetriamine, and react for 60 minutes; then add 10.0 parts of barium hydroxide solution with a concentration of 15% by weight, continue stirring for 20 minutes, and discharge.

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Abstract

The invention provides a vegetable protein adhesive modified by metal ions and active matters jointly as well as a preparation method thereof; the materials of the vegetable protein adhesive are as follows: vegetable protein powder, water, acid, metal ions, active matters and alkali; the preparation technique is as follows: the vegetable protein powder and the water are mixed uniformly; the acid is added under certain temperature; then the metal ions are added for reaction for a period of time; then the active matters are added for reaction for a period of time; and finally the alkali is added for reaction for a period of time to the adhesive. The glue intensity of the vegetable protein adhesive prepared by the method is equal to that of Lauxite glue; the glue intensity of poplar veneer check bars prepared by the soybean adhesive is equal to or larger than 0.7MPa after being dipped in hot water of 63 DEG C plus or minus 3 DEG C for 3h, and does not crack after being boiled for 12 hours by boiled water; moreover, the material cost is low; the preparation technique is simple; and the soybean adhesive is innocuous and environmental friendly. The soybean adhesive is suitable to producing various wood processed products. The adhesive can be prepared into powder agents after being dried by spraying or freezing.

Description

technical field [0001] The invention belongs to the technical field of wood adhesive preparation, and more specifically relates to a vegetable protein adhesive modified jointly with metal ions and active substances and a preparation method thereof. Background technique [0002] Wood adhesive is one of the main raw materials in the wood industry, which determines the quality and price of wood processing products. However, the adhesives currently used are still mainly formaldehyde-based adhesives, which pollute the environment and endanger human health. Some raw materials still rely on petrochemical products, which seriously restricts the development of the wood industry. Therefore be badly in need of developing environment-friendly high-performance wood adhesives. Leguminous plants in renewable resources, such as soybeans, peanuts, etc., contain vegetable protein and can be used as raw materials for the production of adhesives. This type of vegetable protein adhesive has wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J189/00
Inventor 林巧佳陈奶荣
Owner FUJIAN AGRI & FORESTRY UNIV
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