Nano modified urea resin for environment friendly artificial board and preparation method thereof

A urea-formaldehyde resin, nano-modification technology, applied in the direction of adhesive types, aldehyde/ketone condensation polymer adhesives, adhesive additives, etc., can solve the problems of cumbersome operation, insignificant effect, low efficiency, etc. Good viscosity, great market value and social significance, and the effect of improving environmental performance

Active Publication Date: 2010-06-23
SHANGHAI RUNHE NANO MATERIAL SCI &TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method requires cumbersome operations and low efficiency
[0015] (4) Dehydration process: Part of the free formaldehyde can be evaporated together during the dehydration process, but the effect is not significant

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A preparation method of nano-modified urea-formaldehyde resin for environmentally-friendly wood-based panels, including the following steps:

[0040] (1) Preparation materials:

[0041] 1. Phosphoric acid, a commercially available product;

[0042] 2. Zirconium oxychloride, a commercially available product;

[0043] 3. Sodium hydroxide, a commercially available product;

[0044] 4. Tetraethylenepentamine, a commercially available product;

[0045] 5. Urea, a commercially available product;

[0046] 6. Formaldehyde, a commercially available product;

[0047] 7. Polyvinyl alcohol, a commercially available product;

[0048] 8. Ammonium chloride, a commercially available product;

[0049] (2) Preparation of formaldehyde trapping agent

[0050] 1. Preparation of the vector

[0051] Add 147 kg of ZrOCl to 2000L pure water 2 ·8H 2 O, 40L 40%HF and 100L85%H 3 PO 4 , While heating to 80°C for 2 hours, then filter and wash the filter cake until the pH of the washing liquid is ≥6;

[0052] 2. Excha...

Embodiment 2

[0059] A preparation method of nano-modified urea-formaldehyde resin for environmentally friendly wood-based panels, including the following steps:

[0060] (1) Preparation materials:

[0061] 1. Phosphoric acid, a commercially available product;

[0062] 2. Zirconium oxychloride, a commercially available product;

[0063] 3. Sodium hydroxide, a commercially available product;

[0064] 4. Triethylenetetramine, a commercially available product;

[0065] 5. Urea, a commercially available product;

[0066] 6. Formaldehyde, a commercially available product;

[0067] 7. Polyvinyl alcohol, a commercial product;

[0068] 8. Ammonium chloride, a commercially available product;

[0069] (2) Preparation of formaldehyde trapping agent

[0070] 1. Preparation of the vector

[0071] Add 147 kg of ZrOCl to 2000L pure water 2 ·8H 2 O, 40L 40%HF and 100L85%H 3 PO 4 , While heating to 80°C for 2 hours, then filter and wash the filter cake until the pH of the washing liquid is ≥6;

[0072] 2. Exchange active com...

Embodiment 3

[0077] A preparation method of nano-modified urea-formaldehyde resin for environmentally friendly wood-based panels, including the following steps:

[0078] (1) Preparation materials:

[0079] 1. Phosphoric acid, a commercially available product;

[0080] 2. Zirconium oxychloride, a commercially available product;

[0081] 3. Sodium hydroxide, a commercially available product;

[0082] 4. Butylamine, a commercially available product;

[0083] 5. Urea, a commercially available product;

[0084] 6. Formaldehyde, a commercially available product;

[0085] 7. Polyvinyl alcohol, a commercially available product;

[0086] 8. Ammonium chloride, a commercially available product;

[0087] (2) Preparation of formaldehyde trapping agent

[0088] 1. Preparation of the vector

[0089] Add 147 kg of ZrOCl to 2000L pure water 2 ·8H 2 O, 40L 40%HF and 100L85%H 3 PO 4 , While heating to 80°C for 2 hours, then filter and wash the filter cake until the pH of the washing liquid is ≥6;

[0090] 2. Exchange active c...

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Abstract

The invention relates to a nano modified urea resin for environment friendly artificial board and a preparation method thereof. The nano modified urea resin is prepared by implanting formaldehyde scaverger into urea resin by in-situ reaction technology, and the nano modified urea resin comprises the following components and contents (weight percent): 95-99.9% of urea resin and 0.1-5% of formaldehyde scaverger. Compared with the prior art, the nano modified urea resin for environment friendly artificial board in the invention has low free formaldehyde content, good glueability, long storage time, can control release of free formaldehyde in urea resin for a long time, overcomes the shortcomings of traditional low formaldehyde content resin such as poor binding property, easy rebound for formaldehyde release, and short storage time, thus substantially improving environment protection performance of urea resin, radically solving standard exceeding problem of free formaldehyde in indoor decoration and having great market value and social significance.

Description

Technical field [0001] The invention relates to an adhesive, in particular to a nano-modified urea-formaldehyde resin for environment-friendly artificial panels and a preparation method thereof. Background technique [0002] Formaldehyde is the most important pollutant in household life. The problem of formaldehyde pollution causing damage to human health has become increasingly prominent, and related reports and examples have increased significantly. According to statistics from the Ministry of Construction, the current formaldehyde content in newly decorated rooms exceeds the standard by more than 80%. Formaldehyde pollution in homes mainly comes from the extensive use of wood-based panels. At present, my country's wood-based panel output has occupied the second place in the world, but a large number of imported wood-based panels are still needed to meet the needs of interior decoration. Domestically produced urea-formaldehyde resin glue cannot produce E0 standard wood-based p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J161/24C09J11/02
Inventor 陶志清顾海斌殷锡平郭关金
Owner SHANGHAI RUNHE NANO MATERIAL SCI &TECH CO LTD
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