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Flame-retardant polyurethane hot melt adhesive with excellent water resistance and preparation method of hot melt adhesive

A technology of polyurethane hot-melt adhesive and flame-retardant polyether, which is applied in the field of structural adhesives, can solve the problems of reducing the waterproof performance and chemical resistance of polyurethane hot-melt adhesive coatings, improve compatibility and solve solvent resistance. Performance, the effect of not easy to bubble

Inactive Publication Date: 2019-04-12
SHUNDE POLYTECHNIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These non-reactive system tackifying resins cannot participate in curing to form a cross-linked network, which easily reduces the waterproof performance, chemical resistance, heat resistance and aging resistance of polyurethane hot melt adhesive coatings.

Method used

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  • Flame-retardant polyurethane hot melt adhesive with excellent water resistance and preparation method of hot melt adhesive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] It is a flame-retardant polyurethane hot-melt adhesive with excellent waterproof performance, which is prepared by the following steps:

[0029] Step 1: Synthesis of hydroxyl-terminated phosphorus-containing flame-retardant polyacrylic acid fluorinated copolymer

[0030] 6 parts of trifluoroethyl acrylate TFMA, 15 parts of methyl methacrylate MMA, 25 parts of methoxyethyl methacrylate MEMA and 10 parts of 2-methyl-2-acrylic acid-2-hydroxyethyl Base ester phosphate ester HMP was dissolved in 50 parts of toluene, controlled at 60°C, under nitrogen protection, 2.8 parts of thermal initiator 4,4'-azobis(4-cyanopentanol) was added, polymerization reaction 8 Hours, after the toluene is removed by rotary evaporation, the hydroxyl-terminated phosphorus-containing flame-retardant polyacrylic acid fluorine-containing copolymer is obtained, and the hydroxyl-terminated phosphorus-containing flame-retardant polyacrylic acid fluorine-containing copolymer contains an average of 1 to 2...

Embodiment 2

[0034] It is a flame-retardant polyurethane hot-melt adhesive with excellent waterproof performance, which is prepared by the following steps:

[0035] Step 1: Synthesis of hydroxyl-terminated phosphorus-containing flame-retardant polyacrylic acid fluorinated copolymer

[0036] 12 parts of trifluoroethyl acrylate TFMA, 15 parts of methyl methacrylate MMA, 20 parts of methoxyethyl methacrylate MEMA and 15 parts of 2-methyl-2-acrylic acid-2-hydroxyethyl Base ester phosphate HMP was dissolved in 80 parts of toluene, controlled at 65°C, under the protection of nitrogen, 1.3 parts of thermal initiator 4,4'-azobis(4-cyanopentanol) was added, and the polymerization reaction was 10 Hours, after the toluene is removed by rotary evaporation, the hydroxyl-terminated phosphorus-containing flame-retardant polyacrylic acid fluorine-containing copolymer is obtained, and the hydroxyl-terminated phosphorus-containing flame-retardant polyacrylic acid fluorine-containing copolymer contains an av...

Embodiment 3

[0040] It is a flame-retardant polyurethane hot-melt adhesive with excellent waterproof performance, which is prepared by the following steps:

[0041] Step 1: Synthesis of hydroxyl-terminated phosphorus-containing flame-retardant polyacrylic acid fluorinated copolymer

[0042] 16 parts of trifluoroethyl acrylate TFMA, 27 parts of methyl methacrylate MMA, 17 parts of methoxyethyl methacrylate MEMA and 22 parts of 2-methyl-2-acrylic acid-2-hydroxyethyl The base ester phosphate HMP was dissolved in 90 parts of toluene, controlled at 75°C, and under the protection of nitrogen, 0.6 parts of thermal initiator 4,4'-azobis(4-cyanopentanol) was added, and the polymerization reaction was 14 Hours, after the toluene is removed by rotary evaporation, the hydroxyl-terminated phosphorus-containing flame-retardant polyacrylic acid fluorine-containing copolymer is obtained, and the hydroxyl-terminated phosphorus-containing flame-retardant polyacrylic acid fluorine-containing copolymer contai...

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Abstract

The invention discloses a flame-retardant polyurethane hot melt adhesive with excellent water resistance and a preparation method of the hot melt adhesive. The hot melt adhesive is characterized by comprising the following components: 5-25 parts of a polyether diol, 1-35 parts of a liquid polyester diol, 1-40 parts of a flame-retardant polyether polyol, 1-50 parts of a crystalline polyester diol,5-40 parts of a hydroxyl-terminated phosphorus-containing flame-retardant polyacrylic acid fluorine-containing copolymer, 10-50 parts of isocyanate, 0.1-2 parts of a catalyst, 0.2-3 parts of an antioxidant and 0.1-4 parts of a silane coupling agent. According to the method provided by the invention, hydroxyl-terminated poly(trifluoroethyl acrylate-random-methyl methacrylate-random-methoxyethyl methacrylate-random-2-methyl-2-acrylic acid-2-hydroxyethyl ester phosphate) is firstly synthesized, the hydroxyl-terminated poly(trifluoroethyl acrylate-random-methyl methacrylate-random-methoxyethyl methacrylate-random-2-methyl-2-acrylic acid-2-hydroxyethyl ester phosphate) is added into a polyurethane prepolymer, a fluorine-containing acrylate copolymer chain segment and a reactive flame retardantare introduced, and therefore the water resistance, chemical resistance and flame retardancy of the polyurethane colloid are further improved.

Description

technical field [0001] The invention belongs to the technical field of structural adhesives, in particular to a flame-retardant polyurethane hot-melt adhesive with excellent waterproof performance and a preparation method thereof, which is mainly used in the electronics and electrical industry, automobile industry, textile and shoemaking industry, food packaging industry, wood materials Structural bonding fields such as processing and furniture industry. Background technique [0002] Polyurethane hot melt adhesive is a new generation of structural adhesive that can provide excellent bonding performance. It is a type of hot melt adhesive made of polyurethane prepolymer as the main material and various additives. Polyurethane hot-melt adhesives are easy to use and environmentally friendly, and their performance is comparable to solvent-based hot-melt adhesives. In the past ten years, polyurethane hot melt adhesives have been rapidly developed and widely used in high-end field...

Claims

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Application Information

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IPC IPC(8): C09J175/08C09J11/06C08G18/48C08G18/42C08G18/62
CPCC08G18/4063C08G18/42C08G18/4804C08G18/6225C09J11/06C09J175/08C08K5/54
Inventor 唐秋实刘锋陈燕舞路风辉霍应鹏彭琦林雯雯洪银娜马倩琳
Owner SHUNDE POLYTECHNIC
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