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Crosslinking modified jatropha curcas cake meal adhesive and preparation method thereof

A jatropha cake, cross-linking modification technology, applied in the preparation of adhesives, animal glue or gelatin, non-polymer adhesive additives, etc., to achieve good antibacterial ability, mature preparation process, excellent strength performance and water resistance performance Effect

Inactive 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

Under the current situation of food shortage, the use of soybean meal to prepare wood adhesives undoubtedly has great limitations

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] (1) Add 80 parts of jatropha meal powder, 240 parts of water, and 4.8 parts of NaOH to the reaction kettle, start the mechanical stirring bar, stir for 5 minutes, add 1.6 parts of ethylene glycol, 10 drops of silicone oil, and heat up to 90°C. And after keeping the reaction time for 3 hours, discharge the material after cooling to obtain the jatropha cake adhesive.

[0023] (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 80 parts of melamine, raise the temperature to 85°C, keep it warm for 1-2 hours, then immediately cool to 40°C, adjust the pH to 9.0 with NaOH solution, and discharge to obtain melamine resin.

[0024] (3) Add 4 parts of commercially available epoxy resin and 6 parts of melamine resin to the jatropha cake adhesive, mix and stir evenly.

[0025] After testing: According to the test method of GB / T 17657-1999 plywood, the dry bonding strength of poplar ply...

Embodiment 2

[0028] (1) Add 80 parts of jatropha cake powder, 280 parts of water, 3.8 parts of NaOH and 1.9 parts of CaO into the reaction kettle, start the mechanical stirring bar, stir for 5 minutes, add 3.2 parts of ethylene glycol, 10 drops of silicone oil, and raise the temperature After reaching 90°C and maintaining the reaction time for 3 hours, the material was discharged after cooling to obtain a soybean protein adhesive.

[0029] (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 80 parts of melamine, raise the temperature to 85°C, keep it warm for 1-2 hours, then immediately cool to 40°C, adjust the pH to 9.0 with NaOH solution, and discharge to obtain melamine resin.

[0030] (3) Add 3 parts of commercially available epoxy resin and 6 parts of melamine resin to the soybean protein adhesive, mix and stir evenly.

[0031] After testing: the dry bonding strength, W2 and W1 of poplar ...

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Abstract

The invention provides a crosslinking modified jatropha curcas cake meal adhesive and a preparation method thereof. The preparation process is as follows: adding 80 parts of jatropha curcas cake meal, 187-320 parts of water and 5.6-12 parts of alkali into a reaction kettle, stirring for 5 min, adding 1.6-3.2 parts of ethylene glycol and 5-20 drops of silicone oil, heating to 90 DEG C, insulating and stirring for 3 h, cooling and discharging materials. Before usage, 6-12 parts of a mixture containing epoxy resin and melamine resin in a weight ratio of 1:1-1:2 is added into the adhesive, and uniformly mixed. The jatropha curcas cake meal adhesive provided by the invention has the advantages of simple preparation process, moderate viscosity and strong operationality, and can effectively improve the comprehensive utilization rate of jatropha curcas cake meal. The adhesive has excellent strength and water resistance performance, and performance indexes meeting the requirements of type I and type II glued boards specified in the national standard GB / T9846.3-2004.

Description

technical field [0001] The invention relates to a preparation method of a cross-linked modified jatropha cake powder adhesive. The jatropha cake powder 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] Jatropha, also known as Jatropha curcas ( Jatropha curcas L. ), hibiscus tree, tung tree, bright tung tree, stinky tung tree, belong to Euphorbiaceae ( Euphorbiaceae ) deciduous shrubs or small trees, mainly distributed in tropical and subtropical regions, mainly growing in tropical regions of America and Asia. Cultivated in my country or semi-wild in southern tropical and subtropical regions, such as Yunnan, Guizhou, Sichuan, Guangxi, Guangdong and other places. This tree species has strong drought resistance and barren resistance, does not need to occupy arable land, and has a large amount of fruit, large seeds, and high oil content in seed kernels, generally 35...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J189/00C09J183/04C09J163/00C09J161/28C09J11/04C09J11/06
Inventor 雷洪杜官本
Owner SOUTHWEST FORESTRY UNIVERSITY
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