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One-component moisture-curing polyurethane furniture edge banding adhesive and preparation method thereof

A moisture-curing, polyurethane technology, used in polyurea/polyurethane adhesives, adhesives, polymer adhesive additives, etc., can solve the problems of decreased bonding strength and short storage time, and achieve reduced viscosity and long storage period. , the effect of reducing infiltration

Active Publication Date: 2020-12-22
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The addition of silicone-modified fluorine-containing acrylate copolymers overcomes the problem that polyurethane adhesives with low viscosity and good storage properties in the prior art are easy to penetrate into the pores on the wood surface, resulting in a decrease in bonding strength, and also solve the problem of high viscosity. Polyurethane adhesives tend to have shorter shelf life issues

Method used

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  • One-component moisture-curing polyurethane furniture edge banding adhesive and preparation method thereof
  • One-component moisture-curing polyurethane furniture edge banding adhesive and preparation method thereof
  • One-component moisture-curing polyurethane furniture edge banding adhesive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Embodiment 1 (comparative example)

[0048] A preparation method of a single-component moisture-curing polyurethane furniture edge sealant, the composition of the raw material formula is as follows:

[0049]

[0050] According to the above ratio, vacuum dehydrated polyester diol, 2,4-toluene diisocyanate, 2-(2'-hydroxy-3'5'-bis[1,1-dimethylphenyl])- Benzotriazole antioxidants were added to the reaction kettle respectively, and the reaction temperature was controlled at 60-65°C, N 2 Under the atmosphere, the reaction was fully stirred for 30 min. Subsequently, 1.5 g of dibutyltin tin dilaurate was added to the reactor, and the system was heated to 95° C. for 3 hours. Measure the NCO content every half an hour. When the NCO content reaches 18%-19%, cool the system down to 65°C, add 80g of 1,4-butanediol dropwise at a constant speed, and use acetic acid at a mass ratio of 1:2. Dilute with ethyl ester solvent, drop it within 30min, raise the temperature to 75°C for 1h...

Embodiment 2

[0052] (1) Synthesis of silicone-modified fluorine-containing acrylate copolymer

[0053] Mix 40g of 2-hydroxyethyl acrylate, 20g of trifluoroethyl methacrylate, 20g of γ-(methacryloyloxy)propyltrimethoxysilane and 0.5g of BOP, heat up to 80-85°C for 3h, After cooling, a silicone-modified fluorine-containing acrylate copolymer solution is obtained.

[0054] (2) A preparation method of a single-component moisture-curing polyurethane furniture edge sealant, the composition of the raw material formula is as follows:

[0055]

[0056]

[0057] According to the above ratio, vacuum dehydrated polyester diol, 2,4-toluene diisocyanate, 2-(2'-hydroxy-3'5'-bis[1,1-dimethylphenyl])- Benzotriazole was added to the reaction kettle respectively, and the reaction temperature was controlled at 60-65°C. 2 Under the atmosphere, the reaction was fully stirred for 30 min. Subsequently, 1.5 g of dibutyltin tin dilaurate was added to the reactor, and the system was heated to 95° C. for 3 h...

Embodiment 3

[0059] (1) Synthesis of silicone-modified fluorine-containing acrylate copolymer

[0060] Mix 20g of 2-hydroxyethyl acrylate, 20g of trifluoroethyl methacrylate, 20g of γ-(methacryloyloxy)propyltrimethoxysilane and 0.1g of BOP, heat up to 80-85°C for 2.5h , and after cooling, a silicone-modified fluorine-containing acrylate copolymer solution is obtained.

[0061] (2) A preparation method of a single-component moisture-curing polyurethane furniture edge sealant, the composition of the raw material formula is as follows:

[0062]

[0063]

[0064] According to the above ratio, the vacuum dehydrated polyester diol, 2,4-toluene diisocyanate, bis[β(3-tert-butyl-5-methyl-4-hydroxyphenyl)propionic acid] triethylene glycol The esters were added to the reaction kettle respectively, and the reaction temperature was controlled at 60-65°C, and the N 2 Under the atmosphere, the reaction was fully stirred for 30 min. Subsequently, the catalyst dimorpholine diethyl ether was added ...

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Abstract

The invention discloses single-component moisture-cured polyurethane furniture edge sealing glue and a preparation method thereof. The edge sealing glue comprises, by mass, 20 to 35 parts of polyhydric alcohol, 15 to 25 parts of isocyanate, 0.001 to 0.01 parts of a catalyst, 25 to 50 parts of a solvent, 3 to 6 parts of a chain extender and 3-625-50 and 1 to 3 parts of an organosilicone-modified fluorinated acrylate copolymer. The polyurethane glue has good adhesiveness, storage properties, water resistance and aging resistance, can be cured at the room temperature, can adjust the surface energy of the glue film according to the substrate and is suitable for the edge sealing treatment on furniture wood. The preparation method of the single-component moisture-cured polyurethane furniture edge sealing glue has the advantages of simple preparation processes, low requirements on process conditions and industrial production easiness.

Description

technical field [0001] The invention relates to the technical field of polyurethane adhesives, in particular to a single-component moisture-curing polyurethane furniture edge banding adhesive and a preparation method thereof. Background technique [0002] Polyurethane adhesives are adhesives that contain highly polar and chemically active carbamate groups (-NHCOO-) or isocyanate groups (-NCO) in their molecular chains. Because of the isocyanate and carbamate groups, it can be used with materials containing active hydrogen, such as foamed plastics, wood, leather, fabrics, paper, ceramics and other porous materials, as well as metals, glass, rubber, plastics and other smooth surfaces. Materials have excellent chemical adhesion. The hydrogen bond between the polyurethane and the material to be bonded will enhance the cohesion of the molecules, thus making the bond stronger. Due to its good toughness, adjustability, excellent low-temperature resistance and excellent stability,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J175/06C09J11/08C08G18/62C08G18/66C08G18/42C08G18/32C08G18/20C08G18/12C08G18/79C08F220/20C08F220/24C08F230/08
CPCC08F220/20C08F220/24C08F230/08C08G18/12C08G18/2081C08G18/3206C08G18/4063C08G18/42C08G18/4202C08G18/6295C08G18/664C08G18/794C08L2201/08C09J11/08C09J175/06C08L93/04C08L11/00C08L45/00
Inventor 傅和青宋蒙蒙
Owner SOUTH CHINA UNIV OF TECH
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