Urea resin additive

A urea-formaldehyde resin and additive technology, which is applied in the direction of adhesive additives, polymer adhesive additives, aldehyde/ketone condensation polymer adhesives, etc., can solve the problems of low activity and reduced effect of capturing formaldehyde, and achieve reduction Water absorption, weakening of stress concentration, good water absorption and water retention effects

Inactive Publication Date: 2006-09-20
许盛英
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  • Abstract
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Problems solved by technology

[0008] 2. After the attapulgite is not acidified, it is only treated at 250-300°C for 1-3 hours. The activity of the attapulgite is low. When mixed with urea aqueous solution, the effect of capturing formaldehyde will be reduced

Method used

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Experimental program
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Embodiment Construction

[0029] Below in conjunction with embodiment, the present invention will be further described:

[0030] 1. The production method of active attapulgite clay is:

[0031] 1. The preparation of dilute sulfuric acid comprises the following components by weight percentage: 3% of sulfuric acid with a concentration of 98%, and 97% of water;

[0032] 2. The batching of the acid treatment includes the following components by weight percentage: attapulgite clay raw ore 55%, dilute sulfuric acid 45%, dilute sulfuric acid is slowly added in the attapulgite clay raw ore to carry out acidification treatment;

[0033] ③Extrusion: Extrude the acidified attapulgite clay through an extruder into flakes, the thickness of the flakes is ≤3mm;

[0034] ④Roasting: Attapulgite clay flakes are transported to the roasting furnace for roasting. The roasting time is 2.5 hours, and the roasting temperature is controlled at 320-350°C. After roasting, the attapulgite clay flakes are activated attapulgite cl...

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PUM

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Abstract

This invention discloses a method for manufacturing a urea-formaldehyde resin additive, which is composed of active attapulgite clay, magnesium oxide, polyvinyl alcohol, polyacrylamide and sodium dodecyl sulfonate. The method comprises the steps of mixing the raw materials, pulverizing and packaging to obtain the final product. The urea-formaldehyde resin additive is a neutral additive containing active minerals and polymers, and once added into urea-formaldehyde resin it can improve the quality of urea-formaldehyde resin, reduce the release of formaldehyde and alleviate environmental pollution.

Description

Technical field: [0001] The invention relates to an adhesive, in particular to a urea-formaldehyde resin additive. Background technique: [0002] With the extensive application of wood-based panels in the building decoration and furniture industries, people are in closer contact with wood-based panels, so the environmental quality of wood-based panels has also attracted more and more attention and attention. More than 90% of the wood-based panels currently on the market are produced using urea-formaldehyde resin. For a long time, urea-formaldehyde resin has been widely used because of its simple preparation, low price, colorless, good water solubility and high bonding strength. And all stages after curing will release formaldehyde, even after decoration processing, free formaldehyde will still be released, causing indoor environmental pollution. Moreover, the release of free formaldehyde in wood-based panels is slow, with a peak period within 3 years, a recession period wit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J161/24C09J11/08
Inventor 许庆华朱泽波邓安春
Owner 许盛英
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