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Soybean protein-calcium carbonate nano-adhesive as well as preparation method and application thereof

A technology of soybean protein and adhesive, applied in the field of nanomaterials, polymer chemistry and physics, to achieve the effect of enhancing interface force, enhancing chemical force, and wide application prospects

Inactive Publication Date: 2012-06-13
NANJING LAIBU TECH IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to overcome the shortcoming that existing soybean protein adhesive exists, and provide a kind of soybean protein-calcium carbonate nano-adhesive with high bonding strength and strong water resistance

Method used

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  • Soybean protein-calcium carbonate nano-adhesive as well as preparation method and application thereof
  • Soybean protein-calcium carbonate nano-adhesive as well as preparation method and application thereof
  • Soybean protein-calcium carbonate nano-adhesive as well as preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0033] Add soybean protein isolate to water to swell (soybean protein isolate content is 11%), slowly raise the temperature to 60°C, stir and react for 3 hours to obtain soybean protein suspension, and pass through a high-pressure homogenizer at 10KPa to obtain milky pure soybean protein adhesive agent.

Embodiment 2

[0035] Soybean protein isolate was placed in a tetrafluoroethylene vessel and added to water to swell (soybean protein isolate content was 11%). After slowly heating up to 60°C, 0.05mol / L calcium hydroxide aqueous solution was added to make the pH of the system 9. After 2 hours, Add 0.2 mol / L sodium potassium carbonate to the dissolved protein solution, the molar ratio of the added sodium potassium carbonate and calcium hydroxide is 1:1, stop the reaction after stirring and reacting at 60°C for 3 hours, and obtain soybean protein-calcium carbonate suspension Liquid, under 10KPa through a high-pressure homogenizer to obtain emulsion adhesive.

Embodiment 3

[0037] Put the concentrated soybean protein in a glass vessel and add water to swell (concentrated soybean protein content is 15%), slowly heat up to 80°C, add 0.1mol / L calcium hydroxide saturated solution to make the pH of the system 10, after 1.5 hours In the protein solution of dissolving, add 0.09mol / L potassium bicarbonate, the mol ratio of potassium bicarbonate and calcium hydroxide is 1: 2, stops reaction after stirring reaction at 80 ℃ for 6 hours, obtains soybean protein-calcium carbonate suspension, The emulsion adhesive was obtained through a high-pressure homogenizer at 25KPa.

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Abstract

The invention provides a soybean protein-calcium carbonate nano-adhesive as well as a preparation method and application thereof, aiming at overcoming the defects of low bonding strength and poor water resistance existing in the traditional soybean protein-calcium carbonate adhesive. The preparation method has the advantages of simple and convenient process, low production cost, no pollution and suitability to industrialized production. The adhesive can be used for bonding wood, bamboo, vines, straws and papers and other fiber materials and is convenient to apply with good bonding performance. The soybean protein-calcium carbonate nano-adhesive of the invention comprises the following components in parts by weight: 80-95 parts of soybean protein matrixes (1) and 1-15 parts of inorganic calcium carbonate particles (2) dispersed in the (1) in nano sizes.

Description

1. Technical field: [0001] The invention relates to a soybean protein-calcium carbonate nano-adhesive and its preparation method and application, which belong to the field of polymer chemistry and physics, and also belong to the field of nano-materials. 2. Background technology: [0002] In the 1930s, urea-formaldehyde adhesives and phenol-formaldehyde adhesives from the oil and gas industry began to be used. Bonding systems have been used in the manufacture of wood composite products since the 40's. When the hot pressing process is adopted, the hot pressing time of the formaldehyde adhesive greatly exceeds the time required for the bean gum. Industrial production of formaldehyde has steadily increased over the past 75 years. The amount of formaldehyde used in wood adhesives accounts for half of the total formaldehyde production. However, formaldehyde can cause acute respiratory problems and may also be a carcinogen. With the increase in the price of petroleum-derived sy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J189/00C09J11/04B27D1/04
Inventor 刘大刚
Owner NANJING LAIBU TECH IND CO LTD
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