Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Water-repellent TPU (thermoplastic polyurethane) hot melt adhesive film and preparation method thereof

A hot-melt adhesive and water-repellent technology, which is applied in the field of composite materials, can solve the problems of low melting point of films, restrictions on wide-scale application and promotion, poor low-temperature performance, etc., and achieve improved mechanical properties, excellent water-repellent properties and mechanical properties , Excellent water-repellent performance

Active Publication Date: 2021-08-27
DONGGUAN XIONGLIN NEW MATERIAL TECH
View PDF16 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

CN101358020A discloses a non-porous moisture-permeable waterproof modified polyether ester functional film material and its preparation method, using polyether ester, polyamide, hydrophilic polymer, ethylene-vinyl acetate copolymer, antioxidant and processing additives, the prepared film has a low melting point (about 120°C) and high wet resistance, but its low temperature performance is not good, and the water-splashing processability after compounding is not good, which limits its wide-scale application and promotion
Although the prepared waterproof and moisture-permeable thermoplastic polyurethane film has a certain moisture permeability, its mechanical properties decline.
[0005] CN109161186A discloses a waterproof TPU film process and formula, the waterproof TPU film process and formula include TUF particles 70-80%, ABS-g maleic anhydride 5-8%, silicon dioxide 1-3%, natural polyphenol 6 ~10%, epoxy resin 10~15% and light stabilizer 3~5%. The technology and formula of a waterproof TPU film provided by the invention can improve its smoothness by changing the raw material composition and proportion, and adding a crosslinking agent. Elimination of particles in the TPU film can ensure the tightness and stability of the raw material structure and improve the waterproof effect. By improving the processing technology, simplifying the process, facilitating heating operations, and effectively reducing production costs, this can greatly improve the stability of use. Guarantee the smoothness of production and processing, but the water-repellent performance of the TPU film obtained still needs to be improved

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Water-repellent TPU (thermoplastic polyurethane) hot melt adhesive film and preparation method thereof
  • Water-repellent TPU (thermoplastic polyurethane) hot melt adhesive film and preparation method thereof
  • Water-repellent TPU (thermoplastic polyurethane) hot melt adhesive film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] A kind of water-repellent TPU hot-melt adhesive film, its preparation raw material comprises following component according to weight part:

[0059]

[0060] The preparation method of the water-repellent TPU hot-melt adhesive film provided by the present embodiment comprises the following steps:

[0061] (1) react polytetramethylene ether glycol, polyethylene glycol (molecular weight: 3000Da) and hexamethylene diisocyanate at 75°C for 2.5h to obtain a polyurethane prepolymer;

[0062] (2) react the polyurethane prepolymer obtained in step (1), 1,4-butanediol, vinyl bis stearamide and catalyst (CT-E229) at 50°C for 10 hours, and extrude to obtain TPU particles;

[0063] (3) Pass the TPU particles obtained in step (2), C6 fluorocarbon compound, tea polyphenol, di-tert-butyl p-cresol, isopropanol and modified cellulose ether thickener (PRIME1000) at 180°C The single-screw extruder at 50 rpm melts and extrudes, cools and stretches to obtain the water-repellent TPU hot-me...

Embodiment 2

[0065] A kind of water-repellent TPU hot-melt adhesive film, its preparation raw material comprises following component according to weight part:

[0066]

[0067]

[0068] The preparation method of the water-repellent TPU hot-melt adhesive film provided by the present embodiment comprises the following steps:

[0069] (1) reacting polytetramethylene ether glycol, polyethylene glycol (molecular weight: 2000Da) and isophorone diisocyanate at 70°C for 3 hours to obtain a polyurethane prepolymer;

[0070] (2) react the polyurethane prepolymer obtained in step (1), 1,4-butanediol, vinyl bis stearamide and catalyst (CT-E229) at 40°C for 12 hours, and extrude to obtain TPU particles;

[0071] (3) The TPU particles obtained in step (2), C8 type fluorocarbons, tea polyphenols, di-tert-butyl p-cresol, isopropanol and modified cellulose ether thickener (PRIME1000) are passed through the rotating speed at 170°C The single-screw extruder of 100 rpm melts and extrudes, cools and str...

Embodiment 3

[0073] A kind of water-repellent TPU hot-melt adhesive film, its preparation raw material comprises following component according to weight part:

[0074]

[0075]

[0076] The preparation method of the water-repellent TPU hot-melt adhesive film provided by the present embodiment comprises the following steps:

[0077] (1) reacting polytetramethylene ether glycol, polyethylene glycol (molecular weight: 5000Da) and isophorone diisocyanate at 80°C for 2 hours to obtain a polyurethane prepolymer;

[0078] (2) React the polyurethane prepolymer obtained in step (1), 1,4-butanediol, vinyl bis stearamide and catalyst (CT-E229) at 60°C for 6 hours, and extrude to obtain TPU particles;

[0079] (3) The TPU particles obtained in step (2), C8 type fluorocarbons, tea polyphenols, di-tert-butyl p-cresol, isopropanol and modified cellulose ether thickener (PRIME1000) are passed through the rotating speed at 200°C The single-screw extruder of 30 rpm melts and extrudes, cools and stret...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
elongation at breakaaaaaaaaaa
Login to View More

Abstract

The invention provides a water-repellent TPU (thermoplastic polyurethane) hot melt adhesive film as well as a preparation method and application thereof. The water-repellent TPU hot melt adhesive film is prepared from the following raw materials: a combination of polyether polyol, isocyanate, a chain extender, an organic fluorine waterproof agent, a cross-linking agent and natural polyphenol. By adding a specific part of organic fluorine waterproof agent into the preparation raw materials and selecting polyhydric alcohol with a specific structure, the prepared TPU hot melt adhesive film has excellent water repellent performance; meanwhile, natural polyphenol is added, so that the mechanical property of the TPU hot melt adhesive film is further improved, the TPU hot melt adhesive film with excellent water repellent property and mechanical property is finally obtained, and the TPU hot melt adhesive film has important research significance.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and in particular relates to a water-repellent TPU hot-melt adhesive film and a preparation method thereof. Background technique [0002] The molecular chain of TPU is generally composed of a hard segment and a soft segment. The soft segment is generally polyether, polyester, and polyolefin with hydroxyl terminals. The hard segment is generally composed of a chain extender and isocyanate to form polyurethane. It is used in Medical, chemical and other industries. However, the existing TPU film cannot guarantee its water-repellent performance in the material ratio. [0003] Therefore, how to improve the water-repellent performance of the film of TPU material is the research focus of many researchers at present, and there are many reports on this aspect. CN101358020A discloses a non-porous moisture-permeable waterproof modified polyether ester functional film material and its preparati...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/35C09J175/08C09J11/06C08G18/12C08G18/66C08G18/48C08G18/32
CPCC09J7/35C09J175/08C09J11/06C08G18/12C08G18/4854C08G18/4833C08G18/4808C08G18/6674C09J2301/304C08G2170/20C09J2301/408C09J2475/00C08G18/3206C08K5/02C08K5/1545
Inventor 何建雄
Owner DONGGUAN XIONGLIN NEW MATERIAL TECH
Features
  • Generate Ideas
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com