Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of preparation method of highly transparent thermoplastic polyurethane elastomer

A thermoplastic polyurethane and elastomer technology, which is applied in the field of polymer material preparation, can solve problems such as complex process and inconvenient operation, and achieve the effect of simple process, convenient operation, and reduced degree of phase separation

Active Publication Date: 2020-02-07
苏州奥斯汀新材料科技有限公司
View PDF12 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a kind of preparation method of highly transparent thermoplastic polyurethane elastomer, in order to solve the problem in the prior art that IPDI is used for the complicated operation of preparing highly transparent thermoplastic polyurethane elastomer

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
  • A kind of preparation method of highly transparent thermoplastic polyurethane elastomer
  • A kind of preparation method of highly transparent thermoplastic polyurethane elastomer
  • A kind of preparation method of highly transparent thermoplastic polyurethane elastomer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 1) 500g of PTMEG, 50g of PCDL, 0.5g of 2,6-di-tert-butyl-4-methylphenol, 0.5g of UV absorber, 1.5g of two (2,6-diisopropyl Add phenyl)carbodiimide into a three-necked flask equipped with a thermometer and a stirrer, dehydrate for 2 hours at 100-110°C and a vacuum lower than 133Pa, then cool to below 60°C, add 250g of methyl titanate catalyst mixed in advance IPDI, prepolymerized at 80~100℃ for 4.5h;

[0026] 2) Add a mixed chain extender of ethylene glycol and cis-1,3-cyclohexanedimethanol with a total mass of 46g and a mass ratio of 1.5:1, react uniformly until completely transparent, and obtain a prepolymer by vacuum defoaming , Pour the prepolymer into the mold and cure it step by step at 60-120°C for 8 hours to obtain a highly transparent thermoplastic polyurethane elastomer.

[0027] The performance test of high transparent thermoplastic polyurethane elastomer is as follows:

[0028] Shore hardness is tested according to GB / T531.1-2008; elongation and tensile str...

Embodiment 2

[0030] 1) 500g of PTMEG, 75g of PCDL, 0.5g of 2,6-di-tert-butyl-4-methylphenol, 0.5g of UV absorber, 1.5g of two (2,6-diisopropylbenzene Add carbodiimide into a three-necked flask equipped with a thermometer and a stirrer, dehydrate for 2 hours at 100-110°C and a vacuum lower than 133Pa, then cool to below 60°C, add 225g of methyl titanate catalyst mixed in advance IPDI, pre-polymerized at 80-100°C for 5 hours;

[0031] 2) Add a mixed chain extender of ethylene glycol and cis-1,3-cyclohexanedimethanol with a total mass of 85g and a mass ratio of 3:1, react uniformly until completely transparent, and obtain a prepolymer by vacuum defoaming , Pour the prepolymer into the mold and cure it step by step at 60-120°C for 8 hours to obtain a highly transparent thermoplastic polyurethane elastomer.

[0032] The performance test is the same as in Example 1.

Embodiment 3

[0034] 1) 500g of PTMEG, 100g of PCDL, 0.5g of 2,6-di-tert-butyl-4-methylphenol, 0.5g of hindered amine stabilizer, 1.5g of bis(2,6-diisopropyl Add phenyl) carbodiimide into a three-necked flask equipped with a thermometer and a stirrer, dehydrate for 2 hours at 100-110°C and a vacuum lower than 133Pa, then cool to below 60°C, add 220g of methyl titanate in advance Catalyst IPDI, pre-polymerized at 80-100°C for 6h;

[0035] 2) Add a mixed chain extender with a total mass of 103g and a mass ratio of 5:1 between 1,3-propanediol and trans-1,3-cyclohexanedimethanol, react uniformly until completely transparent, and obtain the pre- Pour the prepolymer into the mold and cure it step by step at 60-120°C for 8 hours to obtain a highly transparent thermoplastic polyurethane elastomer.

[0036] The performance test is the same as in Example 1.

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 relates to a preparation method of a high-transparency thermoplastic polyurethane elastomer. The preparation method comprises the following steps: firstly, adding PTMEG, PCDL, an antioxidant, a light stabilizer and a hydrolysis resisting agent into a three-neck flask filled with a thermometer and a stirrer; after dehydration, cooling to below 60 DEG C, adding an IPDI premixed with titanate and / or an organic bismuth catalyst, and prepolymerizing at the temperature of 80 to 100 DEG C for 4 to 6 hours; secondly, adding a mixed chain extender of a non-cyclic chain extender and a cyclic chain extender, uniformly reacting until a mixture is completely transparent, and carrying out vacuum defoamation to obtain a prepolymer; pouring the prepolymer into a die, and carrying out stage-by-stage curing at the temperature of 60 to 120 DEG C for 8 to 12 hours to obtain the high-transparency thermoplastic polyurethane elastomer. According to the preparation method disclosed by the invention, a product prepared from an isocyanate component taking the IPDI as resin has good compatibility and high transparency; by adding the PCDL, light transmittance of the product is further improved; in addition, the preparation method is simple and convenient in process and convenient to operate.

Description

technical field [0001] The invention relates to the field of polymer material preparation, in particular to a preparation method of a highly transparent thermoplastic polyurethane elastomer. Background technique [0002] As a class of synthetic polymer materials, polyurethane can obtain various excellent properties by adjusting the chemical composition, and is widely used in the automotive industry, medical equipment, aerospace and other fields. However, ordinary polyurethane elastomers have poor heat resistance, unsatisfactory weather resistance and optical transparency, and their application range is limited, especially in some fields involving special performance technologies such as optics and protection. Therefore, the research and development of high-performance transparent polyurethane materials has attracted more and more attention, and has become a research hotspot in recent years. [0003] Transparent thermoplastic polyurethane elastomer has excellent optical prop...

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 Patents(China)
IPC IPC(8): C08G18/75C08G18/66C08G18/48C08G18/44C08G18/40C08G18/32C08G18/12
CPCC08G18/12C08G18/4018C08G18/44C08G18/4825C08G18/755C08G18/3206C08G18/3212C08G18/3228
Inventor 周述明邓春艳汪泽恒杨向宏
Owner 苏州奥斯汀新材料科技有限公司
Features
  • R&D
  • 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