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Nanometer biological adhesive and its production process

An adhesive and biological technology, used in adhesives, adhesive types, protein adhesives, etc., can solve the problems of poor adhesive strength, difficult to popularize and apply, poor water resistance, etc., and achieve improved adhesive strength and price. Inexpensive, enhanced adhesive properties

Inactive Publication Date: 2007-06-06
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Before the present invention was made, foreign researchers used soybean powder as the main raw material, and compounded it with a solvent to form a patent report of an adhesive. However, this compounded adhesive has poor adhesive strength and poor water resistance, so it is difficult to form a product. Promote application

Method used

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  • Nanometer biological adhesive and its production process

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Experimental program
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Effect test

Embodiment 1

[0019] In the embodiment of the present invention, 10% by weight soybean protein isolate is firstly dispersed in 88.99% by weight of water, and the 94-2 type timing and constant temperature magnetic stirrer is used to stir for 30 minutes to prepare the base material; then slowly add coupling agent to 0.01% by weight and Nano-silica is 1% by weight, and is dispersed for 1 minute at a constant temperature of 50° C. using a high-speed shear emulsifier, and the dispersion speed of the high-speed shear emulsifier is 5000 rpm; finally, ultrasonic treatment is used for 30 minutes to obtain a nano-biological adhesive. It is spray-dried to become a powdered nano-biological adhesive. Spray drying inlet air temperature: 160°C, outlet air temperature: 80°C, processing time: 5 minutes.

Embodiment 2

[0021] In the embodiment of the present invention, 10% by weight soybean protein isolate is first dispersed in 89.98% by weight of water, and the base material is prepared by stirring with a 94-2 type timing constant temperature magnetic stirrer for 40 minutes, and then slowly adding a coupling agent of 0.02% by weight and nanometer Silica is 1% by weight, at a constant temperature of 45°C, dispersed by a high-speed shear emulsifier for 1.5 minutes, and the dispersion speed is 8000 rpm, and finally treated with ultrasonic waves for 25 minutes to obtain a nano-biological adhesive, which is spray-dried to obtain Powdered nano bioadhesive. Spray drying inlet air temperature: 170°C, outlet air temperature: 85°C, drying treatment time: 7 minutes.

Embodiment 3

[0023] In the embodiment of the present invention, first get 10% by weight soybean protein isolate and disperse it in 88.97% by weight of water, and use a 94-2 type timing and constant temperature magnetic stirrer to stir for 45 minutes to prepare the base material; then slowly add coupling agent to 0.03% by weight and Nano-silica is 1% by weight, and is dispersed for 2 minutes at a constant temperature of 55° C. by a high-speed shear emulsifier, and the dispersion speed of the high-speed shear emulsifier is 7500 rpm; finally, ultrasonic treatment is used for 35 minutes to obtain a nano-biological adhesive. It is spray-dried to become a powdered nano-biological adhesive. Spray drying inlet air temperature: 180°C, outlet air temperature: 90°C, processing time: 6 minutes.

[0024] The adhesive strength and water resistance of the nano bio-adhesive prepared by the three embodiments of the present invention are much higher than those of the unmodified soybean protein isolate.

[...

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Abstract

The present invention is nanometer biological adhesive and its production process, and relates to timber adhesive technology. Coupler and nanometer silica are used to modify soybean protein isolate so as to raise the adhesion characteristic. Through dispersing soybean protein isolate in water to form the base material, adding coupler and nanometer silica and dispersing homogeneously, ultrasonic treatment, and spray drying, powdered biological adhesive is produced. Coupler and nanometer silica capable of combining with soybean protein isolate homogeneously and firmly are used to strengthen the adhesion characteristic of soybean protein adhesive. The present invention is environment friendly.

Description

technical field [0001] The invention relates to a nano-biological adhesive and a production method thereof, in particular to molecular modification of soybean protein isolate by using a coupling agent and nano-silicon dioxide to improve its adhesive properties, and belongs to the technical field of wood adhesives. Background technique [0002] At present, wood adhesives are mostly high molecular polymers made of petroleum derivatives. Although these chemical adhesives have good adhesive strength and water resistance, they will evaporate during production, transportation and use. Phenols and formaldehydes are substances harmful to the human body and cause serious environmental pollution. [0003] Declining world oil reserves and their non-renewable nature make it difficult to meet the needs of the ever-expanding wood adhesive market. With the improvement of my country's environmental protection regulations and the enhancement of people's own health awareness, environmentally...

Claims

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Application Information

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IPC IPC(8): C09J189/00C09J11/04
Inventor 黄卫宁张学军邹奇波贾春利金亮秀
Owner JIANGNAN UNIV
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