Composite urea formaldehyde resin curing agent as well as preparation method and application thereof

A technology of urea-formaldehyde resin and curing agent, which is applied in the fields of composite curing agent, artificial board preparation, and curing agent. It can solve problems such as ineffective effect and no suitable curing system, so as to reduce formaldehyde emission, improve production efficiency and product quality. , the effect of extending the application period

Inactive Publication Date: 2010-10-27
EVERFIRST WISEFUND TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

3) Latent curing agent, such as tartaric acid, oxalic acid, etc., but the effect is not obvious, and it is rarely used in China
4) The microcapsule curing agent is another layer of protective film on the surface of the curing agent—capsule. At low temperature, due to the isolation of the surface capsule, it does not have a curing effect. Under high temperature or pressure, the surface capsule is destroyed, and the capsule The curing agent inside is in contact with the resin to cure the glue. At present, there is no such curing agent in China.
Especially for low molar ratio UF resin adhesives, so far there is no suitable curing system

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The preparation of embodiment 1 resin curing agent of the present invention

[0029] 1. Weigh each component according to the following weight: aluminum sulfate: 2kg, ammonium sulfate: 5kg, triphenyl phosphite: 5kg, calcium chloride: 2kg, sodium carbonate: 2kg, water: 84kg;

[0030] 2. Add water into the reaction kettle, start stirring, add aluminum sulfate and ammonium sulfate, add calcium chloride after dissolving, then add sodium carbonate, finally add triphenyl phosphite, stir evenly, and you get it;

[0031] 3. The main technical indicators of the prepared resin curing agent are as follows:

[0032] Solid content: 11-13%

[0033] pH: 6.0-7.0

[0034] Density: 1.15-1.25g / cm3

[0035] Storage period: ≥60 days.

Embodiment 2

[0036] The preparation of embodiment 2 resin curing agent of the present invention

[0037] 1. Weigh each component according to the following weight: aluminum chloride: 1kg, ammonium chloride: 4kg, tributyl phosphate: 6kg, corn starch: 2kg, borax: 1kg, water: 86kg;

[0038] 2. Add water into the reaction kettle, start stirring, add aluminum chloride and ammonium chloride, add cornstarch after dissolving, then add borax, finally add tributyl phosphate, stir evenly, and you get it;

[0039] 3. The main technical indicators of the prepared resin curing agent are as follows:

[0040] Solid content: 11-13%

[0041] pH: 6.0-7.0

[0042] Density: 1.15-1.25g / cm3

[0043] Storage period: ≥60 days.

Embodiment 3

[0044] Embodiment 3 The preparation of resin curing agent of the present invention

[0045] 1. Weigh each component according to the following weight: aluminum chloride: 4kg, ammonium chloride: 4kg, bisphenol phosphite: 10kg, sodium bicarbonate: 3kg, water: 79kg;

[0046] 2. Add water into the reaction kettle, start stirring, add aluminum chloride and ammonium chloride, add sodium bicarbonate after dissolving, and finally add bisphenol phosphite, stir evenly, and you get it;

[0047] 3. The main technical indicators of the prepared resin curing agent are as follows:

[0048] Solid content: 11-13%

[0049] pH: 6.0-7.0

[0050] Density: 1.15-1.25g / cm3

[0051] Storage period: ≥60 days.

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Abstract

The invention discloses a composite urea formaldehyde resin curing agent as well as a preparation method and application thereof. The composite urea formaldehyde resin curing agent comprises the following components: catalyst, controlled release formulations, pH stabilizing agent and water. After the composite urea formaldehyde resin curing agent of the invention is directly mixed into urea formaldehyde resin adhesive with low molar ratio, the curing rate and the curing performance of the urea formaldehyde resin adhesive with low molar ratio can be effectively improved, and thereby the bonding strength thereof is improved and the formaldehyde released content thereof is obviously reduced, and the production efficiency and the product quality are improved; and moreover, the composite urea formaldehyde resin curing agent of the invention has long working life, and can meet the requirements of production operation of artificial boards.

Description

technical field [0001] The present invention relates to a kind of curing agent, relate in particular to a kind of composite curing agent for urea-formaldehyde resin adhesive, the present invention also relates to the preparation method of this composite urea-formaldehyde resin curing agent, the wood adhesive containing this composite urea-formaldehyde resin curing agent and their preparation artificial The utility model relates to a board application and belongs to the field of wood adhesives. Background technique [0002] Over the past 30 years of reform and opening up, my country's wood industry, especially the wood-based panel industry, has achieved extraordinary rapid development. Wood-based panels are the products with the most intensive technology, the widest range of uses and the greatest development potential in the wood industry. With the enhancement of residents' consumption ability, the change of consumption concept and the implementation of my country's natural ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K13/02C08K3/30C08K5/526C08K3/24C08K3/26C08K5/521C08L3/02C08K3/38C09J161/24C09J11/06C09J11/08
Inventor 雷得定刘波
Owner EVERFIRST WISEFUND TECH BEIJING
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