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Environment-friendly high-performance geopolymer-based adhesive laminated wood and preparation method thereof

A high-performance, adhesive technology, applied in the direction of adhesives, adhesive additives, polymer adhesive additives, etc., can solve problems such as the bonding performance of wood adhesives that have not been raised, and save time and process costs. Increased utilization, wide-ranging effects

Inactive Publication Date: 2021-07-16
BEIJING FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Glass fibers in non-metallic materials can reinforce and compound geopolymers, greatly improving their strength and toughness, but how to improve the bonding performance of geopolymers as wood adhesives has not been proposed

Method used

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  • Environment-friendly high-performance geopolymer-based adhesive laminated wood and preparation method thereof
  • Environment-friendly high-performance geopolymer-based adhesive laminated wood and preparation method thereof
  • Environment-friendly high-performance geopolymer-based adhesive laminated wood and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045]An environmentally friendly high-performance geopolymer-based wood adhesive-made glulam, the formula of which is calculated by mass and part ratio:

[0046]

[0047] (1) Dissolve 46.7 parts of sodium hydroxide in 100 parts of distilled water and stir magnetically at 500 rpm for 30 minutes. After cooling to room temperature, set the volume to a sodium hydroxide aqueous solution with a concentration of 11.7 mol / L;

[0048] (2) Mix the above 95mL aqueous sodium hydroxide solution with a concentration of 11.7mol / L and 220mL aqueous sodium silicate solution with a modulus of 2.3 at a speed of 1000rpm for 120min with magnetic stirring, and leave it at room temperature for 24h to obtain the required alkali activator .

[0049] (3) Add 2 parts of silane coupling agent KH-550 into 10 parts of styrene-acrylic emulsion, and mix with magnetic stirring at 500 rpm for 30 minutes to form a stable solution.

[0050] (4) Mix the alkali activator obtained in (2) with metakaolin over 1...

Embodiment 2

[0059] An environmentally friendly high-performance geopolymer-based wood adhesive-made glulam, the formula of which is calculated by mass and part ratio:

[0060]

[0061] (1) Dissolve 46.7 parts of sodium hydroxide in 100 parts of distilled water and stir magnetically at 500 rpm for 30 minutes with a rotating speed. After cooling to room temperature, set the volume to a sodium hydroxide aqueous solution with a concentration of 11.7 mol / L;

[0062] (2) Mix the above 95mL aqueous sodium hydroxide solution with a concentration of 11.7mol / L and 220mL aqueous sodium silicate solution with a modulus of 2.3 at a speed of 1000rpm for 120min with magnetic stirring, and leave it at room temperature for 24h to obtain the required alkali activator .

[0063] (3) Add 2 parts of silane coupling agent KH-550 into 10 parts of styrene-acrylic emulsion, and mix with magnetic stirring at 500 rpm for 30 minutes to form a stable solution.

[0064] (4) Mix the alkali activator obtained in (2)...

Embodiment 3

[0073] An environmentally friendly high-performance geopolymer-based wood adhesive-made glulam, the formula of which is calculated by mass and part ratio:

[0074]

[0075] (1) Dissolve 46.7 parts of sodium hydroxide in 100 parts of distilled water and stir magnetically at 500 rpm for 30 minutes. After cooling to room temperature, set the volume to a sodium hydroxide aqueous solution with a concentration of 11.7 mol / L;

[0076] (2) Mix the above 95mL aqueous sodium hydroxide solution with a concentration of 11.7mol / L and 220mL aqueous sodium silicate solution with a modulus of 2.3 at a speed of 1000rpm for 120min with magnetic stirring, and leave it at room temperature for 24h to obtain the required alkali activator .

[0077] (3) Add 2 parts of silane coupling agent KH-550 into 10 parts of styrene-acrylic emulsion, and mix with magnetic stirring at 500 rpm for 30 minutes to form a stable solution.

[0078] (4) Mix the alkali activator obtained in (2) with metakaolin over ...

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Abstract

The preparation method comprises the following steps: sawing and tenoning a log material, smearing a wood adhesive prepared by taking meta-kaolin as a geopolymer raw material, taking styrene-acrylic emulsion as doped modified resin and taking silane as a coupling agent, and carrying out post-treatment such as pressurizing and cementing to obtain the formaldehyde-free environment-friendly laminated wood. The adhesive layer shearing strength of the product can reach up to 4.9 MPa, the strength is high, the adhesive cost of the laminated wood is reduced, the environmental protection requirement of zero formaldehyde release is met, sustainable development is met, the product can be used as a furniture material, a floor, a wall decorative plate and the like, and the product has important significance on the artificial board industry and has high industrial value.

Description

technical field [0001] The invention relates to the field of adhesives and wood-based panels, in particular to an environmentally friendly high-performance geopolymer-based wood adhesive-made glulam and a preparation method thereof. Background technique [0002] Compared with the commonly used adhesives for wood-based panels, inorganic adhesives have the advantages of no formaldehyde release, green environmental protection, and low price. However, because the most commonly used ordinary silicate adhesives in inorganic adhesives will generate a lot of dust and carbon dioxide during production, which will aggravate the greenhouse effect and endanger human health. [0003] Geopolymer is a new type of environmentally friendly cementitious material that can avoid the problems of silicate adhesives. Compared with ordinary inorganic adhesives, geopolymers have the advantages of green raw materials, no need for calcination, no carbon dioxide release, simple preparation methods, low...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J1/00C09J11/06C09J11/04C09J11/08B27D1/10
CPCC09J1/00C09J11/06C09J11/04C09J11/08B27D1/10
Inventor 张扬马苏宗宇恒汪珈羽李金铭
Owner BEIJING FORESTRY UNIVERSITY
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