Preparation method of reactive polyurethane hot melt adhesive for fabric lamination

A polyurethane hot-melt adhesive, reactive technology, used in polyurea/polyurethane adhesives, adhesive types, adhesives, etc., can solve problems affecting the promotion of novel and changeable fabrics, garment production, and narrow fabric selectivity. To achieve the effect of excellent resistance to enzymes, not easy to change color and deterioration, and excellent bonding strength

Active Publication Date: 2012-02-01
WUXI WANLI ADHESION MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Water-based, oil-based or traditional hot-melt adhesives are usually used when fabrics are laminated. These adhesives have narrow selectivity to fabrics, and have great limitations in press

Method used

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  • Preparation method of reactive polyurethane hot melt adhesive for fabric lamination
  • Preparation method of reactive polyurethane hot melt adhesive for fabric lamination
  • Preparation method of reactive polyurethane hot melt adhesive for fabric lamination

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] a. Weigh 51g of polyether polyol polyoxypropylene diol, 10g of polyester polyol polyhexamethylene adipate diol, 4g of chain extender 1,4 butanediol, adhesion promoter E-51 ring Add 2g of oxygen resin and 0.1g of antioxidant CHINOX1010 into a three-necked flask, heat and stir to mix, vacuum dry and dehydrate at 110°C to 140°C for 2.5h, and cool down to 65°C;

[0019] b. Add 32 g of diphenylmethane-4,4 diisocyanate, 3 drops of stannous octoate catalyst, 1 g of γ-aminopropyltriethoxysilane KH550 silane coupling agent to the above mixture under nitrogen protection, and react for 20 to 30 minutes Finally, discharge the material and seal the package, and put it into an oven at 80°C for curing for 6 to 8 hours to obtain the reactive polyurethane hot-melt adhesive for fabric compounding, and the serial number is PU-1.

Embodiment 2

[0021] a. Weigh 40g of polyether polyol PEG, 5g of polyester polyol polyhexamethylene adipate diol, 1g of chain extender trimethylol propane, 2g of 1,4 butanediol, adhesion promoter E Add 1g of -44 epoxy resin and 0.1g of light stabilizer UV-320 into a three-necked flask, heat and stir at 110°C to 140°C to mix, vacuum dry and dehydrate at 110°C to 140°C for 2.5h, and cool to 75°C to obtain reaction mixture;

[0022] b. Add 25g of diphenylmethane-4,4 diisocyanate, 4 drops of catalyst dibutyltin dilaurate, silane coupling agent γ-glycidyl etheroxypropyl trimethoxysilane KH-560 0.5 to the above mixture under nitrogen protection g. After reacting for 20 minutes, discharge and seal the package, put it in an oven at 80°C for 8 hours, and then get the reactive polyurethane hot-melt adhesive for fabric lamination, coded as PU-2.

Embodiment 3

[0024] a. Weigh 55g of polytetrahydrofuran diol, 8g of polyester polyol polyε-caprolactone polyol, 1g of chain extender trimethylolpropane, 1g of 1,4 butanediol, adhesion promoter bisphenol A ring Add 2g of epoxy resin, 0.05g of antioxidant CHINOX1010 and 0.05g of light stabilizer UV-320 into a three-necked flask, heat and stir to mix, vacuum dry and dehydrate at 110°C for 2.5h, cool down to 65-75°C to obtain a reaction mixture;

[0025] b. Under the protection of nitrogen, add 32 g of diphenylmethane-4,4 diisocyanate, 3 drops of catalyst bismorpholino diethyl ether, and 1 g of silane coupling agent γ-aminopropyltrimethoxysilane KH-551 into the above mixture , after reacting for 20 minutes, discharge the material and seal the package, put it in an oven at 80°C for 7 hours, and then get the reactive polyurethane hot melt adhesive for fabric compounding, which is coded as PU-3.

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Abstract

The invention relates to a preparation method of a reactive polyurethane hot melt adhesive for fabric lamination, relates to a reactive polyurethane hot melt adhesive, and belongs to the technical field of polyurethane hot melt adhesive preparation. The reactive polyurethane hot melt adhesive for fabric lamination is prepared by the following steps: heating and melting polyester polyol, polyether polyol, a chain extender, an adhesive force accelerant and an antioxidant and mixing uniformly, drying in vacuum for dewatering, adding isocyanate, a catalyst and a silane coupling agent, and reacting under nitrogen protection. The prepared reactive polyurethane hot melt adhesive for fabric lamination has the characteristics that: after being heated, the hot melt adhesive becomes molten thick state because of physical crosslinking generated under the action of hydrogen bonds, and then becomes original physical property after being cooled; the hot melt adhesive not only has excellent enzyme bacteria resistance, higher adhesion strength and good flexibility, water resistance, waterproof and moisture permeable properties and the like, but also does not contain volatile organic solvents, has excellent environmental friendliness, and is suitable for the lamination of various fabrics and the lamination of fabrics and waterproof and moisture permeable thin films.

Description

technical field [0001] The invention relates to a method for preparing a reactive polyurethane hot-melt adhesive for fabric compounding, which relates to a reactive polyurethane hot-melt adhesive and belongs to the technical field of polyurethane melt adhesive preparation. Background technique [0002] With the progress of society and the improvement of living standards, consumers have higher and higher requirements for dress. Apparel fabrics are developing in the direction of lightness, comfort and aesthetics, and are particularly favored for functional clothing such as anti-wrinkle, waterproof, moisture-permeable, windproof, warm-keeping, and anti-static, prompting manufacturers to adopt various new technologies and processes to improve various aspects of clothing fabrics item performance. In recent years, composite fabrics have been widely used in garment enterprises, and new fabrics have come out continuously, meeting people's requirements for clothing comfort and diver...

Claims

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Application Information

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IPC IPC(8): C08G18/66C08G18/48C08G18/42C08G18/44C09J175/06C09J175/08C09J11/06
Inventor 林长灿刘小丽
Owner WUXI WANLI ADHESION MATERIALS
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