Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Special composite ingredients for wood-based panel adhesive and method for making same

An adhesive and wood-based panel technology, applied in the direction of adhesives, inorganic adhesives, wood veneer bonding, etc., can solve the problems of fast water loss of glue, hard adhesive layer, restricting the use of bentonite, etc., to shorten the hot pressing time, improve the bonding strength, reduce the effect of film hardness

Inactive Publication Date: 2008-01-30
伊梅生
View PDF0 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Before this, someone tried to use simple bentonite as a filler for wood-based panel adhesives. Bentonite has properties similar to flour, such as cohesiveness, thickening, water absorption, swelling, and suspension. The reasons for using it alone are as follows: (1) The water absorption is too strong, and the prepared glue loses water too fast, so it cannot be bonded; (2) The glue prepared by using bentonite alone is hard after curing, and cannot be used for secondary bonding. (3) Due to the water-swelling properties of bentonite, the water resistance of wood-based panels is significantly reduced
The above reasons limit the use of bentonite in the wood-based panel industry

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] (1) Ratio of materials:

[0018] Calcium bentonite 24%

[0019] Sodium Bentonite 37%

[0020] Flour 37%

[0021] Sodium Carboxymethyl Cellulose 1%

[0022] Micron or nanoscale husk (containing polyphenols) powder 1%

[0023] Curing agent 0.2%

[0024] (2) The preparation method is as follows:

[0025] Turn on the powder mixer, put the materials evenly into the hopper of the machine according to the weight percentage, stir continuously for 30 minutes, take samples for inspection, and pack the materials if they meet the technical indicators; if a certain technical indicator cannot be reached, adjust the formula ratio in time until all Meet the technical indicators and then release the material packaging.

Embodiment 2

[0027] (1) Ratio of materials:

[0028] Calcium bentonite 30%

[0029] Sodium Bentonite 40%

[0030] Flour 20%

[0031] Sodium Hydroxymethyl Starch 5%

[0032] Micron or nanoscale fruit shell (containing polyphenols) powder 5%

[0033] Curing agent 0.5%

[0034] (2) The preparation method is as follows:

[0035] Turn on the powder mixer, put the materials evenly into the hopper of the machine according to the weight percentage, stir continuously for 30 minutes, take samples for inspection, and pack the materials if they meet the technical indicators; if a certain technical indicator cannot be reached, adjust the formula ratio in time until all Meet the technical indicators and then release the material packaging.

Embodiment 3

[0037] (1) Ratio of materials:

[0038] Calcium bentonite 35%

[0039] Sodium bentonite 30%

[0040] Flour 30%

[0041] Pregelatinized Starch 2.5%

[0042] Nanoscale husk powder 2.5%

[0043] Curing agent 0.3%

[0044] (2) The preparation method is as follows:

[0045] Turn on the powder mixer, put the materials evenly into the hopper of the machine according to the weight percentage, stir continuously for 30 minutes, take samples for inspection, and pack the materials if they meet the technical indicators; if a certain technical indicator cannot be reached, adjust the formula ratio in time until all Meet the technical indicators and then release the material packaging.

[0046] The performance of raw materials from different origins varies greatly. The ratio of each raw material in the formula and its products must meet the technical indicators in the company's implementation standards; if a product exceeds one of the technical indicators in the company's implementation...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention aims at providing a special composite burden for adhesive used for a wood-based panel and a preparation method thereof. Mixture of ca-bentonite and na-bentonite according to a certain ratio is chosen to replace pure ca-bentonite or na-bentonite and certain amount of flour, strong water absorbent, reinforcing agent and curing agent are added into the mixture. The invention effectively makes up the disadvantages of pure ca-bentonite of poor water absorption and suspension property, small expansion multiple and poor tackifying effect, etc, and the disadvantages of pure na-bentonite of too strong water absorption, too fast water loss speed of prepared adhesive liquid and impossibility of adhesion, etc, in spite of the advantages of na-bentonite of good suspension property, large expansion multiple and comparatively ideal tackifying effect. The invention also reduces hardness of adhesive mode and water loss speed, improves initial adhesion and adhesive strength and enhances bonding strength and adsorption capacity towards formaldehyde and adhesive liquid can be fully solidified during the process of hot pressing.

Description

Technical field: [0001] The invention relates to the field of special composite ingredients for water-based copolymer adhesives, in particular to a special composite ingredient for wood-based panel adhesives and a preparation method thereof. Background technique: [0002] In the production of plywood, the technology of adding 15 to 25% filler in the adhesive to reduce the consumption of the adhesive, thereby reducing the production cost of the wood-based panel has been widely valued at home and abroad. Reasonable use of fillers can not only reduce production costs, but also reduce curing shrinkage, prevent glue penetration, and improve product aging resistance. At present, the wood-based panel industry uses wheat flour as filler, which consumes a lot of food every year. Before this, someone tried to use simple bentonite as a filler for wood-based panel adhesives. Bentonite has properties similar to flour, such as cohesiveness, thickening, water absorption, swelling, and susp...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C09J1/00B27D1/04
Inventor 伊梅生
Owner 伊梅生
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com