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Formaldehyde-free cementing compound for profiled artificial board and preparation method thereof

A technology of wood-based panels and adhesives, which is applied in manufacturing tools, joining of wooden veneers, polyurea/polyurethane coatings, etc., can solve problems such as insufficient bonding strength and rebound performance, increase manufacturing costs, and affect product quality. Guaranteed resilience performance, reduced scrap rate, and improved product quality

Active Publication Date: 2012-06-27
东营市盛基环保工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, for a 600mm × 50mm × 7mm bed ribs, only twist 45° laterally without any abnormal noise, and use a 50Kg weight to press statically at the midpoint for 2 hours, and rebound for 30 minutes after the pressure is released. These two indicators are more than 55% before bearing pressure, so that the existing ordinary plywood adhesives are not competent due to insufficient bonding strength and rebound performance.
Occasionally, it can barely pass, and it will cause up to 10-17% defective products, which greatly affects the quality of the product and increases the manufacturing cost

Method used

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  • Formaldehyde-free cementing compound for profiled artificial board and preparation method thereof
  • Formaldehyde-free cementing compound for profiled artificial board and preparation method thereof
  • Formaldehyde-free cementing compound for profiled artificial board and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A formaldehyde-free adhesive for special-shaped wood-based panels, including A component and B component, A component is formed by mixing the following components by weight:

[0024]

[0025] Component B is isocyanate; wherein, component A: component B = 100 parts: 8-20 parts.

[0026] Wherein, the polyvinyl alcohol can be selected from one of PVA1788, PVA1799, PVA2088, PVA2099, PVA2288, PVA2299, PVA2488, PVA2499 or a mixture of two or more. Polyvinyl alcohol is preferably one or a mixture of PVA1788, PVA2088, and PVA2488;

[0027] The filler is preferably ground calcium carbonate;

[0028] The emulsifiers are preferably sodium lauryl sulfate, sodium dodecylbenzenesulfonate, octylphenol polyoxyethylene ether OP series;

[0029] Defoamers are preferably non-ionic silicones and mineral oils;

[0030] Antiseptic and fungicides are preferably sorbates and isothiazolinones;

[0031] The isocyanate is preferably polyphenylpolymethylene polyisocyanate.

[0032] Applied...

Embodiment 2

[0041] A formaldehyde-free adhesive for special-shaped wood-based panels, including A component and B component, A component is formed by mixing the following components by weight:

[0042]

[0043] Component B is isocyanate; wherein, component A: component B = 100 parts: 8-20 parts.

[0044] Applied to specific components, the implementation results are as follows:

[0045] Add 585kg of water to a 2t reactor equipped with a stirring device. After heating to 40°C, slowly add 110kg of polyvinyl alcohol while heating. When the temperature rises above 90°C, the polyvinyl alcohol is completely dissolved, then stop heating and keep it warm for 1h. ; Cool down to 50°C; Add 400kg of polyvinyl acetate-ethylene emulsion, 400kg of acrylic acid emulsion, 20kg of 20% sodium hexametaphosphate solution, 20kg of 10% OP-10 solution, and 2kg of non-ionic mineral oil defoamer , add 2kg of potassium sorbate, stir and mix for 10-15min; add 500kg of heavy calcium carbonate, disperse at high sp...

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Abstract

The invention discloses formaldehyde-free cementing compound for a profiled artificial board and a preparation method thereof. The preparation method comprises the following steps that: a composition A is firstly prepared: appropriate water is added into a reaction kettle with a stirring device, polyvinyl alcohol is slowly added when the water is heated to 30 DEG C, and the temperature is increased to 90 DEG C, so the polyvinyl alcohol is completely dissolved, and the temperature is preserved for one hour; then the raw materials are cooled down to 50 DEG C; synthesized liquid is added, and dispersant, emulsifier, defoaming agent and anticorrosion sterilizing agent are then added and stirred for 10 to 15 minutes; then stuffing is added and is dispersed for 45 to 60 minutes at a high speed, so all raw materials are uniformly mixed, and the mixture is filtered to obtain the composition A; and when in use, the composition A is coated after being uniformly mixed with a composition B according to a stipulated weight part. The production technique is simple, the adhesion strength can be improved, the elasticity property can be guaranteed, the product quality can be improved, no toxic substance such as formaldehyde, benzene, methylbenzene, dimethylbenzene and the like is contained, and no toxicity, no harm and environmental friendliness can be completely realized.

Description

technical field [0001] The invention relates to the technical field of fine chemicals, in particular to a formaldehyde-free adhesive for special-shaped wood-based panels and a preparation method thereof. Background technique [0002] At present, special-shaped wood-based panels for furniture not only have the various properties of ordinary wood-based panels, but more importantly, they must have good resilience after bearing pressure, and can maintain the designed shape to the maximum extent. Therefore, in the process of processing, except In addition to different production processes for different varieties and different uses, the adhesive used is the main factor that determines the final performance of the product. But so far no relevant patents and literature reports have been found. [0003] For the performance testing of special-shaped wood-based panels, there is no relevant standard at present, and some simple testing methods are often used in the industry. For exampl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04B27D1/04
Inventor 杨奠基石延芳
Owner 东营市盛基环保工程有限公司
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