Environmental-friendly and waterproof urea-formaldehyde resin adhesive and preparation method thereof

A urea-formaldehyde resin and adhesive technology, which is applied in the field of sheet metal processing, can solve the problems of poor water resistance and single effect, and achieve the effects of avoiding chemical pollution, excellent waterproof effect and simple process operation.

Inactive Publication Date: 2017-09-08
南宁市邦得力木业有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention solves the problem that the above existing urea-formaldehyde resin adhesive has a single effect, poor water resistance, and is difficult to meet the requirements of consumers. The present invention adopts the following technical solutions

Method used

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  • Environmental-friendly and waterproof urea-formaldehyde resin adhesive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Environmental protection, waterproof urea-formaldehyde resin adhesive, including the following raw materials: high-gluten flour, sulfuric acid, urea-formaldehyde resin glue, pigment, coagulant.

[0022] Raw materials: 15 parts of high-gluten flour, 1 part of 75% sulfuric acid, 35 parts of urea-formaldehyde resin glue, 2 parts of pigment, 1 part of coagulant, set aside;

[0023] S1: Preparation of environmentally friendly and waterproof base glue

[0024] S1-1: Take high-gluten flour, mix it with water at a ratio of 1:10, stir, place in a constant temperature water bath at a temperature of 53°C, stir in one direction, slowly add sulfuric acid diluted to 56% at a rate of 0.05ml / 10s , after 3 minutes and 20 seconds, the dropwise addition is completed, and the mixture is fully mixed to obtain the floc;

[0025] S1-2: Take urea-formaldehyde resin glue, add the floc prepared in step S1-1, stir for 2 minutes, let stand for 4 minutes, and set aside;

[0026] S2: gelling

[0...

Embodiment 2

[0029] Environmental protection, waterproof urea-formaldehyde resin adhesive, including the following raw materials: high-gluten flour, sulfuric acid, urea-formaldehyde resin glue, pigment, coagulant.

[0030] Raw materials: 35 parts of high-gluten flour, 2 parts of 75% sulfuric acid, 40 parts of urea-formaldehyde resin glue, 3 parts of pigment, 2 parts of coagulant, set aside;

[0031] S1: Preparation of environmentally friendly and waterproof base glue

[0032] S1-1: Take high-gluten flour, mix it with water at a ratio of 1:10, stir, place in a constant temperature water bath at a temperature of 55°C, stir in one direction, slowly add sulfuric acid diluted to 53% at a rate of 0.08ml / 10s, After 4 minutes and 10 seconds, the dropwise addition is completed, and the mixture is fully mixed to obtain the floc;

[0033] S1-2: Take urea-formaldehyde resin glue, add the floc prepared in step S1-1, stir for 2 minutes, let stand for 5 minutes, and set aside;

[0034] S2: gelling

[...

Embodiment 3

[0037] Environmental protection, waterproof urea-formaldehyde resin adhesive, including the following raw materials: high-gluten flour, sulfuric acid, urea-formaldehyde resin glue, pigment, coagulant.

[0038] Take 20 parts of high-gluten flour, 1.5 parts of 75% sulfuric acid, 30 parts of urea-formaldehyde resin glue, 2.5 parts of pigment, and 1 part of coagulant accelerator as raw materials, and set aside;

[0039] S1: Preparation of environmentally friendly and waterproof base glue

[0040] S1-1: Take high-gluten flour, mix it with water at a ratio of 1:10, stir, place in a constant temperature water bath with a temperature range of 60°C, stir in one direction, and slowly add sulfuric acid diluted to 53% at a rate of 0.1ml / 11s , 2min45s dropwise is completed, fully mixed to obtain the floc;

[0041] S1-2: Take urea-formaldehyde resin glue, add the floc prepared in step S1-1, stir for 1 min, let stand for 3 min, and set aside;

[0042] S2: gelling

[0043] Lower the temper...

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Abstract

The invention discloses an environmental-friendly and waterproof urea-formaldehyde resin adhesive which comprises the following raw materials: high gluten flour, sulfuric acid, a urea-formaldehyde resin adhesive, pigments and a coagulation accelerator. The manufacturing process of the adhesive comprises preparation of a waterproof and environmental-friendly matrix; and adhesive formation. The release amount of free formaldehyde is 0 after the urea-formaldehyde resin adhesive is cured for 48h; the maximum release content is 0.02mg/L after the urea-formaldehyde resin adhesive is cured for 96h; the immersed peel length of each edge of a board is 0mm after the board is immersed for 4-6h in distilled water at 90-100 DEG C; and the adhesive is remarkable in environmental-friendly and waterproof performances.

Description

technical field [0001] The invention belongs to the technical field of plate processing, and in particular relates to an environmental-friendly and waterproof urea-formaldehyde resin adhesive and a preparation method thereof. Background technique [0002] Urea-formaldehyde resin adhesive is a kind of adhesive that is easy to make and cheap. With the development of modern science and technology, the application of urea-formaldehyde resin adhesive is more and more extensive, which promotes the in-depth research of urea-formaldehyde resin adhesive. Large, poor water resistance, and free formaldehyde is released during curing. For this reason, people have begun to modify urea-formaldehyde resins. At present, there have been many research reports on the modification of urea-formaldehyde resins, such as "Research on the modification of urea-formaldehyde resin adhesives" Classification number: TQ433.431, in the synthesis process of urea-formaldehyde resin, control the release of fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J161/24C09J103/02C09J189/00C09J11/04
CPCC08K2003/309C09J11/04C09J161/24C08L3/02C08L89/00C08K3/30
Inventor 颜锡富
Owner 南宁市邦得力木业有限责任公司
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