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Flame-retardant waterborne polyurethane adhesive and preparation method thereof

A water-based polyurethane and adhesive technology, applied in the direction of polyurea/polyurethane adhesives, adhesives, adhesive additives, etc., can solve problems such as fire hazards, reduce odor, reduce VOC emissions, and solve flammable or flammable Effect

Inactive Publication Date: 2020-06-19
BEIJING COMENS NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned adhesives are polymer adhesives, which are still flammable or flammable after film formation, which brings fire hazards

Method used

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  • Flame-retardant waterborne polyurethane adhesive and preparation method thereof
  • Flame-retardant waterborne polyurethane adhesive and preparation method thereof
  • Flame-retardant waterborne polyurethane adhesive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0016] (1) The water-based polyurethane dispersion can adopt one or more of U53 of Bayer in the prior art, U54 of Bayer, U56 of Bayer, 1633 of Wanhua Chemical, 1665 of Wanhua Chemical, and 1637 of Wanhua Chemical kind.

[0017] (2) The water-based bulk flame-retardant acrylate can be the water-based bulk flame-retardant acrylate in Chinese patent CN102408853B (applicant: Beijing Gaomeng New Materials Co., Ltd.).

[0018] (3) The water-based thickener can adopt TEGO Visco Plus 3000 of Evonik in the prior art, Acrysol RM2020 of Rohm and Haas, Acrysol RM8W of Rohm and Haas, Acrysol RM12W of Rohm and Haas, Rohm and Haas One or more of Acrysol RM5000 from Sri Lanka, HEUR-A from Hefei Anke, HEUR-B from Hefei Anke, and Vesmody A801 ​​from Wanhua Chemical.

[0019] (4) The coupling agent can be one or more of KH450, KH550, KH560, KH570, KH602 in the prior art.

[0020] (5) The wetting agent may be one or more of Evonik's TEGO WET KL245, BYK's BYK345, BYK's BYK346, BYK's BYK349, and ...

Embodiment 1

[0031] A flame-retardant water-based polyurethane adhesive, the preparation method of which can include (by weight): 20 parts of Bayer's U54, 45 parts of Bayer's U56, 35 parts of water-based bulk flame-retardant acrylate, 1 part of gas-phase dioxide Silicon, 0.2 part of coupling agent KH550, 0.15 part of Evonik's TEGO WET KL245, 0.2 part of AMP-95, 0.1 part of BASF Foamaster 8034 were mixed, and stirred at 500-600r / min for 10-20min, and then mixed with 0.15 part of pure Dilute 0.15 parts of Evonik’s TEGO ViscoPlus 3000 with water and slowly add it dropwise to the mixture. After the addition, continue to stir at 700-800r / min for 30-60min. Take a sample to test the viscosity. When the viscosity is in the range of 3000-7000mPa.s The stirring can be stopped, and the main glue can be obtained by filtering with a 200-mesh filter screen. The main glue and the water-based isocyanate curing agent Bayer's Desmodur DN are used in a weight ratio of 100:5 to obtain a flame-retardant water-...

Embodiment 2

[0034] A flame-retardant water-based polyurethane adhesive, the preparation method of which can include (by weight): 25 parts of Bayer's U54, 45 parts of Bayer's U56, 30 parts of water-based bulk flame-retardant acrylate, 1.5 parts of gas-phase dioxide Silicon, 0.25 parts of coupling agent KH560, 0.2 parts of BYK's BYK345, 0.15 parts of N-methylethanolamine, 0.2 parts of BYK's BYK018 are mixed, and stirred at a speed of 500-600r / min for 10-20min, and then 0.2 parts Dilute 0.2 parts of Rohm and Haas Acrysol RM2020 with pure water and slowly add it dropwise to the mixture. After the addition, continue to stir at 700-800r / min for 30-60min, take a sample to test the viscosity, when the viscosity is 3000-7000mPa.s Within the range, the stirring can be stopped, and the main glue can be obtained by filtering with a 200-mesh filter. The main glue is used in combination with the water-based isocyanate curing agent Bayer's Desmodur DN at a weight ratio of 100:3 to obtain a flame-retarda...

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Abstract

The invention discloses a flame-retardant waterborne polyurethane adhesive and a preparation method thereof, the flame-retardant waterborne polyurethane adhesive is composed of a main adhesive and a waterborne isocyanate curing agent, and the main adhesive and the waterborne isocyanate curing agent are cooperatively used according to a weight ratio of 100: 2-10, wherein the main adhesive is prepared from the following raw materials in parts by weight: 50 to 70 parts of a waterborne polyurethane dispersion, 30 to 50 parts of waterborne body flame-retardant acrylate, 0.1 to 0.5 part of a waterborne thickener, 1 to 3 parts of fumed silica, 0.1 to 0.5 part of a coupling agent, 0.1 to 0.5 part of a wetting agent, 0.1 to 0.5 part of a neutralizer and 0.1 to 0.5 part of a defoaming agent. The adhesive is environmentally friendly, non-toxic, low in VOC, low in odor and excellent in bonding strength, the flame retardant capacity of the adhesive after film formation is remarkably improved, and the adhesive can be widely applied to the fields of automobiles, high-speed rails, furniture, shoemaking, textiles and the like.

Description

technical field [0001] The invention relates to the field of water-based polyurethane adhesives, in particular to a flame-retardant water-based polyurethane adhesive and a preparation method thereof. Background technique [0002] At present, commonly used adhesives in the fields of automobiles, high-speed rail, furniture, shoemaking, and textiles are divided into oil-based adhesives and water-based adhesives. Oil-based adhesives have a strong smell and are not environmentally friendly, which not only affects the health of workers, but also makes the glued parts continuously emit toxic and harmful substances, which affects the health of users. Water-based adhesives are environmentally friendly, non-toxic, low-VOC, and low-odor, and can avoid the disadvantages of oil-based adhesives. However, the above-mentioned adhesives are polymer adhesives, which are still flammable or flammable after film formation, which brings fire hazards. Contents of the invention [0003] Aiming ...

Claims

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Application Information

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IPC IPC(8): C09J175/04C09J133/08C09J11/04
CPCC08L2201/02C08L2205/025C08L2205/03C08L2205/035C09J11/04C09J133/08C09J175/04C08L75/04C08L33/08C08K7/26
Inventor 刘滨朱恕真罗善国
Owner BEIJING COMENS NEW MATERIALS
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