Halogen-free flame retardant TPU (Thermoplastic Urethane) glue coating material and preparation method thereof

A technology of encapsulation and flame retardant, which is applied in the field of chemical synthesis, can solve problems such as insufficient physical strength, uneven mixing and dispersion of solid additives and TPU products, and poor fluidity of products, so as to improve high temperature resistance and continuous performance, avoid The effect of high temperature melting cracking and good processability

Active Publication Date: 2018-05-08
SHANDONG INOV POLYURETHANE
View PDF7 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, TPU itself has poor flame retardancy, and has disadvantages such as flammability, large smoke generation, and molten droplets, which restrict its application in automotive parts and other fields.
At the same time, in terms of compound modification processing application technology, secondary processing is used in the actual processing process. The finished TPU product is mixed with a physical property enhancer, and then secondary processing is performed through a single-screw or twin-screw extruder. Secondary processing and granulation lead to high-temperature cracking of TPU products when they are melted and mixed at high temperature in the extruder, and solid additives and TPU products are easy to mix and disperse unevenly, resulting in poor fluidity of products, resulting in insufficient physical strength

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
  • Halogen-free flame retardant TPU (Thermoplastic Urethane) glue coating material and preparation method thereof
  • Halogen-free flame retardant TPU (Thermoplastic Urethane) glue coating material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] In terms of parts by weight, polytetrahydrofuran glycol (PTMG-1000): 38.45 parts are added to reactor A, and the set temperature is 105°C; MDI-100: 17.75 parts, placed in reactor B, and the set temperature is 65°C ; 1,4-butanediol: 2.96 parts, placed in the C reactor, set the temperature at 60°C; the mixed material was injected into the twin-screw reactor, the isocyanate index was controlled at 0.99-1.03, and passed through the side with a metering and mixing system Add flame retardant aluminum diethyl hypophosphite dispersed with 8 parts of plasticizer diethylene glycol dibenzoate to the feed port: 13 parts, flame retardant melamine polyphosphate: 9 parts, flame retardant hydroxide Magnesium: 5 parts, 0.25 parts each of Irganox 1076, antioxidant 168, 0.15 parts each of Tinuvin 292, UV-P, catalyst (T-9): 0.04 parts, and then processed by screw extrusion injection and underwater pelletizing Granulate and dry to obtain the halogen-free flame-retardant TPU elastomer materi...

Embodiment 2

[0040] In terms of parts by weight, polytetrahydrofuran glycol (PTMG-2000): 49.06 parts are added to reactor A, and the set temperature is 98°C; MDI-100: 21.02 parts, placed in reactor B, and the set temperature is 55°C ; 1,4-butanediol: 5.39 parts, placed in the C reactor, set the temperature at 45 ° C, the mixed material was injected into the twin-screw reactor, the isocyanate index was controlled at 0.99-1.03, and passed through the side with a metering and mixing system Add aluminum diethyl hypophosphite dispersed with 4 parts of plasticizer diethylene glycol dibenzoate: 9 parts, melamine cyanurate: 6 parts, aluminum oxide: 3 parts, Irganox 1010, anti Each 0.15 part of oxygen agent 626, each 0.1 part of Tinuvin 770, Tinuvin 328, catalyst (T-9): 0.03 part, then through screw extrusion injection processing, granulate and dry by the mode of underwater cutting, obtain the non- Halogen flame retardant TPU elastomer material.

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

No PUM Login to view more

Abstract

The invention belongs to the technical field of chemical synthesis, and particularly relates to a halogen-free flame retardant TPU (Thermoplastic Urethane) glue coating material and a preparation method thereof. The halogen-free flame retardant TPU glue coating material is prepared from the following raw materials including polyhydric alcohol, diisocyanate, chain expanding agents, antioxidants, light stabilizers, catalysts, halogen-free main flame retardants, cooperated flame retardants and plasticizing agents. The halogen-free main flame retardants are one or several kinds of materials from organic hypophosphorous acid metal salts, rare earth hypophosphorous acid salt or melamine derivative series flame retardants; the cooperated flame retardants are one or several kinds of materials fromaluminum hydroxide, magnesium hydrate, aluminum oxide or magnesium oxide. The invention also provides the preparation method of the halogen-free flame retardant TPU glue coating material. According to the method, the polyhydric alcohol, the diisocyanate and the chain expanding agents are mixed; auxiliary agents dispersed by the plasticizing agents are continuously added through a lateral feedingopening; then, extrusion processing and granulation is performed through screw extrusion; a finished product is obtained. The halogen-free flame retardant TPU glue coating material has the advantagesthat the flame retardant performance, the mechanical property and the processing performance are excellent; the self extinguishing effect can be realized; halogen hydride gas with toxic and harmful effect on the environment is not generated during the combustion in the air; the efficiency is high; the environment is protected.

Description

technical field [0001] The invention belongs to the technical field of chemical synthesis, and in particular relates to a halogen-free flame-retardant TPU encapsulation material and a preparation method thereof. Background technique [0002] Thermoplastic polyurethane elastomer has good chemical corrosion resistance, electrical insulation, low temperature flexibility, wear resistance and weather resistance, prolongs the durability and service life of the material, and is widely used. However, TPU itself has poor flame retardancy, and has disadvantages such as flammability, large smoke generation, and molten droplets, which restrict its application in automotive parts and other fields. At the same time, in terms of composite modification processing application technology, secondary processing is used in the actual processing process. The finished TPU product is mixed with a physical property enhancer, and then secondary processing is performed through a single-screw or twin-s...

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): C08L75/08C08K13/02C08K3/22C08K5/3492C08K5/5313C08K5/12C08G18/76C08G18/66C08G18/48C08G18/32
CPCC08G18/3206C08G18/4854C08G18/6674C08G18/7671C08K3/22C08K5/12C08K5/34928C08K5/5313C08K13/02C08K2003/2224C08K2003/2227C08L2201/02C08L2201/22C08L75/08
Inventor 陈淑海宋小娜贺宽宽彭程
Owner SHANDONG INOV POLYURETHANE
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap