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Environmental protection type adhesion agent for wood industry

An industrial and environmentally friendly technology, applied in wood processing utensils, pretreatment of molding materials, unsaturated alcohol copolymer adhesives, etc. The effect of small size, fast curing speed and high film hardness

Active Publication Date: 2007-02-14
河北为真竹木技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is another kind of isocyanate glue on the market. Although this glue does not contain phenol and aldehyde, it is highly toxic, and it is flammable and explosive during production, transportation and storage.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] The preparation of embodiment 1 blockboard glue

[0058] 1. Pretreatment:

[0059] ①Mix 0.2kg of ethylene glycol and 0.4kg of water for later use;

[0060] ② Stir 0.03kg of polyacrylamide and 0.6kg of water until completely dissolved, set aside.

[0061] ③ Mix 0.1kg of benzisothiazolinone with 0.2kg of water and set aside.

[0062] 4. Stir 10kg and 7kg of heavy calcium carbonate (300 mesh fine powder) evenly (by weight ratio of 1:0.7) for subsequent use.

[0063] 2. Hot melting:

[0064] In a stainless steel jacket container equipped with temperature control, speed control and stirring, add 60.47kg of water, raise it to 70°C, and add 7kg of PVA20-99 type (slow throwing) under stirring at 60r / min. ~95°C, until it is completely dissolved. The solution is lowered to 65°C±2°C, and under stirring at 100-130r / min, slowly add 14kg of silica sol; keep it at about 50°C for 15-20min to make it fully polymerized. Then dropwise add the standby material in the above ① step. C...

Embodiment 2

[0065] The preparation of embodiment 2 plywood glue

[0066] 1. Pretreatment:

[0067] ①Mix 0.35kg of ethylene glycol and 0.7kg of water for later use;

[0068] ② Stir 0.05kg of polyacrylamide and 1kg of water until completely dissolved, set aside.

[0069] ③ Mix 10kg of mica powder (400 mesh fine powder) with 7kg of water and set aside.

[0070] 2. Hot melting:

[0071] Add 50.9kg of water to a stainless steel jacketed container equipped with temperature control, speed control and stirring, raise it to 70°C, and add 10kg of PVA (type 22-95) (slowly throwing) under stirring at 60r / min. Raise the temperature to 90-95°C and wait for it to dissolve completely. The solution is lowered to 65°C±2°C, and under stirring at 100-130r / min, slowly add 20kg of silica sol (30% silicon dioxide content); keep it at about 50°C for 15-20min to make it fully polymerized. Then dropwise add the standby material in the above ① step. Cool down to room temperature, add the spare materials in st...

Embodiment 3

[0072] The preparation of embodiment 3 particle board glue

[0073] 1. Pretreatment:

[0074] ①Mix 0.3kg of ethylene glycol and 0.6kg of water for later use;

[0075] ② Stir 0.03 kg of polyacrylamide and 0.6 kg of water until completely dissolved, and set aside.

[0076] ③ Mix 8kg of heavy calcium carbonate with 5.6kg of water and set aside.

[0077] 2. Hot melting:

[0078] Add 61.78kg of water to a stainless steel jacketed container equipped with temperature control, speed control and stirring, raise the temperature to 70°C, and add 9kg of PVA (type 24-88) (slowly throwing) under stirring at 60r / min. Raise the temperature to 90-95°C and wait for it to dissolve completely. The solution is lowered to 65°C±2°C, and under stirring at 100-130r / min, slowly add 14kg of silica sol (with a silicon dioxide content of 30-40%); keep it at about 50°C for 15-20min to make it fully polymerized. Then dropwise add the standby material in the above ① step. Cool down to room temperature,...

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PUM

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Abstract

The invention discloses an environmental protection adhesive for timber industry, prepared of a formula comprising: PVA 5-10wt%, silica solution 10-20wt%, glycol 0.2-0.35wt%, polyacrylamide 0.03-0.05wt%, mildew- proof germicide 0-0.1wt%, fillings 10-12wt%, and water the rest. It does not use aldehyde-containing, hydroxybenzene-containing and organic volatile-containing matters as raw materials to form a formula, and the used raw materials have wide sources but no poisonous matters, and besides, these components can excellently cooperate with one another, therefore it has excellent performances of three-aldehyde glue and radically solves a series of problems caused by formaldehyde and organic volatile release.

Description

technical field [0001] The present invention relates to chemical adhesives, in particular to an adhesive especially suitable for use in the wood industry. Background technique [0002] At present, in the wood industry adhesive market, urea-formaldehyde resin glue, phenolic resin glue and melamine-formaldehyde resin glue (referred to as trialdehyde glue) occupy a dominant position. These three glues have many excellent properties, but there are also some insurmountable shortcomings, especially the free formaldehyde they contain, which seriously affects their further wide application. Take urea-formaldehyde resin glue as an example. This resin glue has been favored by the market for its advantages of high bonding strength, fast curing, colorless cured adhesive layer, simple manufacture, excellent performance, low cost and wide source of raw materials. But in recent years, with the continuous improvement of people's health awareness and environmental protection awareness, the ...

Claims

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Application Information

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IPC IPC(8): C09J129/04B27N1/02
Inventor 樊岁新
Owner 河北为真竹木技术有限公司
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