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

Hydrolysis resistant thermoplastic polyurethane elastomer and preparation method thereof

A technology of plastic polyurethane and elastomer, applied in the field of hydrolysis-resistant thermoplastic polyurethane elastomer and its preparation, can solve the problems of poor moisture and heat resistance, poor wear resistance, strength and tear properties, and restricted use, and achieves self- Degradation behavior, improving hydrolysis resistance, and the effect of good hydrolysis resistance

Active Publication Date: 2014-03-19
SHANDONG INOV POLYURETHANE
View PDF4 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Polyester TPU has excellent mechanical properties, high strength, high elongation and high elasticity, good wear resistance, oil resistance, and aging resistance. The hydrolysis of the chain segment reduces its mechanical properties, which greatly limits the application
Most of the commonly used hydrolysis-resistant polyurethane elastomers are polyether-type. However, polyether-type polyurethane elastomers have slightly poorer wear resistance, strength and tear performance, and their manufacturing costs are higher, which limits their use in many fields.

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
  • Hydrolysis resistant thermoplastic polyurethane elastomer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Synthesis of hydrolysis-resistant thermoplastic polyurethane elastomer: it is made of the following mass fraction raw materials:

[0025] Polyethylene adipate diol (M=2000): 70.4%,

[0026] Diphenylmethane diisocyanate (MDI): 21.5%,

[0027] 1,4-butanediol (BDO): 4.5%,

[0028] Bis(2,6-diisopropylphenyl)carbodiimide (CD-1): 1.0%,

[0029] Polycondensation of tetramethylxylene diisocyanate (PTMXDI): 2%

[0030] Irganox 1010: 0.3%,

[0031] Tinuvin770: 0.3%.

[0032] Preparation method: Add polyester polyol, hydrolysis stabilizer, antioxidant and light stabilizer into the reaction kettle, heat the temperature to 110°C under stirring, dehydrate at -0.1MPa for 2 hours, then lower the temperature to 80°C, add BDO to mix After homogeneity, add molten MDI, isocyanate index r 0 =1.01. Quickly stir and mix evenly, pour it into the mold, press it into a 2mm sheet in a flat vulcanizer, vulcanize at 110°C for 4 hours, then put it in a blast oven for 8 hours at 80°C, and plac...

Embodiment 2

[0034] Synthesis of hydrolysis-resistant thermoplastic polyurethane elastomer: it is made of the following mass fraction raw materials:

[0035] Polybutylene adipate diol (M=2000): 40%,

[0036] Diphenylmethane diisocyanate: 40%,

[0037] 1,2-propanediol: 15%,

[0038] Bis(4-phenoxy-2,6-diisopropylphenyl)carbodiimide: 2.0%,

[0039] PTMXDI: 2.0%,

[0040] Irganox245: 0.5%,

[0041] Tinuvin234: 0.5%.

[0042] Preparation method: Add polyester polyol, hydrolysis stabilizer, antioxidant and light stabilizer into the reaction kettle, heat the temperature to 120°C under stirring, dehydrate at -0.85MPa for 1h, then lower the temperature to 70°C, add 1, After 2-propanediol is mixed evenly, add molten MDI, isocyanate index r 0 =1.03. Quickly stir and mix evenly, pour it into the mold, press it into a 3mm sheet in a flat vulcanizer, vulcanize at 100°C for 3 hours, then put it in a blast oven for 6 hours at 90°C, and place it at room temperature for 7 days to obtain Products wit...

Embodiment 3

[0044] Synthesis of hydrolysis-resistant thermoplastic polyurethane elastomer: it is made of the following mass fraction raw materials:

[0045] Polybutylene adipate diol (M=1500): 75%,

[0046] Diphenylmethane diisocyanate: 20.8%,

[0047] Diethylene glycol: 3%,

[0048] Bis(4-phenoxy-2,6-diisopropylphenyl)carbodiimide: 0.5%,

[0049] PTMXDI: 0.5%,

[0050] Irganox245: 0.1%,

[0051] Tinuvin234: 0.1%.

[0052] Preparation method: Add polyester polyol, hydrolysis stabilizer, antioxidant and light stabilizer into the reaction kettle, heat the temperature to 100°C under stirring, dehydrate at -0.1MPa for 2 hours, then lower the temperature to 90°C, add a shrink After diethylene glycol is mixed evenly, add molten MDI, isocyanate index r 0 =1.01. Quickly stir and mix evenly, pour it into the mold, press it into a 1mm sheet in a flat vulcanizer, vulcanize at 120°C for 2 hours, then put it in a blast oven for 10 hours at 80°C, and place it at room temperature for 7 days to ob...

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
Shore hardnessaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the field of high polymer materials, and in particular relates to a hydrolysis resistant thermoplastic polyurethane elastomer and a preparation method thereof. The hydrolysis resistant thermoplastic polyurethane elastomer is prepared from the following raw materials by mass percent: 40-75% of macromolecule polyol, 20-40% of diisocyanate, 3.8-14% of chain extender, 1-5% of hydrolysis stabilizer, 0.1-0.5% of antioxidant and 0.1-0.5% of light stabilizer. The polyurethane elastomer is synthesized from polyester polyol, diisocyanate and the chain extender, a proper amount of hydrolysis stabilizer is added to effectively improve the hydrolysis resistance of the elastomer, the self-degradation behavior of the polyester type TPU under hygrothermal environment is solved, and the hydrolysis resistant thermoplastic polyurethane elastomer has excellent mechanical property, abrasive resistance and oil resistance, and high strength and high modulus. By adopting the simple one-step method, the process is simple and easy to realize and suitable for industrial production.

Description

technical field [0001] The invention belongs to the field of polymer materials, and in particular relates to a hydrolysis-resistant thermoplastic polyurethane elastomer and a preparation method thereof. Background technique [0002] Thermoplastic polyurethane elastomer (TPU) is a kind of polyurethane material that can be plasticized by heating and can be dissolved by solvent. It has a unique soft and hard block copolymer structure, because it has both the elasticity of rubber and the processability of plastic. It is widely used in many fields. Polyester TPU has excellent mechanical properties, high strength, high elongation and high elasticity, good wear resistance, oil resistance, and aging resistance. The hydrolysis of the chain segment reduces its mechanical properties, which greatly limits the application. Most of the commonly used hydrolysis-resistant polyurethane elastomers are polyether-type. However, polyether-type polyurethane elastomers have poor abrasion resista...

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): C08G18/66C08G18/42C08G18/32C08K5/29C08L75/06C08L79/00
CPCC08G18/3206C08G18/4238C08G18/664C08K5/29C08L75/06C08L2207/04C08L79/00
Inventor 陈淑海李健陈海良高振胜张宁
Owner SHANDONG INOV POLYURETHANE
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com