Jatropha curcas cake meal adhesive and preparation method thereof

A technology of Jatropha japonica cake and adhesive, which is used in the preparation of adhesive, animal glue or gelatin, polymer adhesive additives, etc. Simple preparation process

Active Publication Date: 2014-07-30
SOUTHWEST FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But generally speaking, there are few relevant reports on jatropha cake adhesive

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Add 80 parts of jatropha cake powder, 170 parts of water, 4 parts of urea, and 6.4 parts of NaOH into the reaction kettle, start the mechanical stirring bar, start to raise the temperature, and make the temperature rise to 50°C within 30 minutes, and keep the reaction time After 3 hours, the materials were discharged after cooling to obtain the jatropha cake meal prelyzed solution.

[0027] (2) Add 150 parts of 37% formaldehyde solution to the reaction kettle, and adjust the pH to 9.0 with an appropriate amount of 30% NaOH solution. Add 116 parts of melamine, raise the temperature to 85°C, keep the temperature for reaction for 2 hours, then immediately cool to 40°C, adjust the pH to 9.0 with NaOH solution and discharge to obtain melamine-formaldehyde resin.

[0028] (3) Add 9.6 parts of melamine-formaldehyde resin to the jatropha cake prelysis solution, mix and stir evenly.

[0029]

Embodiment 2

[0031] (1) Add 80 parts of jatropha cake powder, 240 parts of water, 0.8 parts of sodium dodecylbenzenesulfonate, 4.8 parts of NaOH and 1.9 parts of CaO into the reaction kettle, start the mechanical stirring bar, start to heat up, and make the temperature at Rise to 50°C within 30 minutes, and keep the reaction time for 3 hours. After cooling, discharge the material to obtain the jatropha cake cake prelysis solution.

[0032] (2) Add 150 parts of 37% formaldehyde solution to the reaction kettle, and adjust the pH to 9.2 with an appropriate amount of 30% NaOH solution. Add 93 parts of melamine, raise the temperature to 85°C, keep it warm for 3 hours, then immediately cool to 40°C, adjust the pH to 9.0 with NaOH solution and discharge to obtain melamine-formaldehyde resin.

[0033] (3) Add 14.2 parts of melamine-formaldehyde resin to the jatropha cake prelysis solution, mix and stir evenly.

[0034]

Embodiment 3

[0036] (1) Add 80 parts of jatropha cake powder, 220 parts of water, and 12 parts of KOH into the reaction kettle, start the mechanical stirring rod, start to raise the temperature, and make the temperature rise to 50°C within 30 minutes, and keep the reaction time for 2 hours. After cooling, the material is discharged to obtain the jatropha cake meal prelyzed solution.

[0037] (2) Add 12 parts of melamine-formaldehyde resin to the jatropha cake prelysis solution, mix and stir evenly. Among them, the melamine-formaldehyde resin is commercially available as a colorless transparent liquid with a solid content of 45%, a viscosity (20°C) of 70 mPa·s, a pH value of 9.2, and a molar ratio of melamine to formaldehyde M / F of 1:2.67.

[0038]

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Abstract

The invention provides a jatropha curcas cake meal adhesive and a preparation method thereof. The adhesive comprises the following components: jatropha curcas cake flour, water, a modifier, alkali and a crosslinking agent. The jatropha curcas cake flour is first treated by the modifier and alkali, so that the protein molecules are fully expanded, and the crosslinking agent is used to further improve the bonding strength and water resistance of the jatropha curcas cake flour. The jatropha curcas cake meal adhesive provided by the invention uses biodiesel staple by-product jatropha curcas cake meal as theraw material, and provides an effective utilization approach for jatropha curcas cake meal. The jatropha curcas cake meal adhesive provided by the invention has the advantages of simple preparation process with simple and flexible operation, good bonding strength and water resistance, can be used for preparation of glued board of type II, and shows wide application prospect.

Description

technical field [0001] The invention relates to a method for preparing a jatropha cake adhesive. The jatropha adhesive is mainly used in the production of wood-based panels and furniture, and belongs to the technical field of wood adhesives. Background technique [0002] Adhesive is one of the basic raw materials for the production of wood-based panels. The structural units of wood-based panels (such as shavings, fibers, and veneers) depend on the bonding of adhesives to finally produce wood-based panel products. At present, synthetic resin adhesives such as urea-formaldehyde resin, melamine resin and phenolic resin are the main types of adhesives in the wood-based panel industry, and their respective wood-based panel products have different usage requirements. Due to the use of formaldehyde raw materials, the above three commonly used adhesives will inevitably release formaldehyde during the use of wood-based panel products. As a carcinogen, the hazards of formaldehyde hav...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J189/00C09J11/04C09J11/06C09J11/08C08J3/24
Inventor 雷洪杜官本吴志刚
Owner SOUTHWEST FORESTRY UNIVERSITY
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