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

A preparation method of ddmbdx-pi/tpu with high transparency and easy processing

A DDMBDX-PI, easy-to-process technology, which is applied in the field of high-transparency and easy-to-process DDMBDX-PI/TPU preparation, can solve the problems that the transparency of thermoplastic polyurethane needs to be improved, so as to increase organic affinity, improve dispersion ability, and good nucleation effect Effect

Active Publication Date: 2021-11-30
FUZHOU UNIV
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As an elastomer between plastic and rubber, thermoplastic polyurethane has both the hardness of plastic and the elasticity of rubber, and is widely used in various fields. However, the transparency of thermoplastic polyurethane needs to be improved at present.

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 preparation method of ddmbdx-pi/tpu with high transparency and easy processing
  • A preparation method of ddmbdx-pi/tpu with high transparency and easy processing
  • A preparation method of ddmbdx-pi/tpu with high transparency and easy processing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A preparation method of DDMBDX-PI / TPU with high transparency and easy processing and molding. The raw materials include: 52.75 parts of polytetrahydrofuran, 9.0 parts of 1,4-butanediol, 38.25 parts of diphenylmethane diisocyanate, Nucleating agent DDMBDX-PI0.1 part.

[0032] The molecular weight of the polytetrahydrofuran is between 1024-1056.

[0033] The 1,4-butanediol is a colorless viscous oily liquid with a molecular weight of 90.12 and a hydroxyl value of 1000-1200 mg KOH / g.

[0034] The catalyst is selected from organotin dibutyltin dilaurate.

[0035] The preparation of DDMBDX-PI: Pretreatment: Since propyl isocyanate can react with water, if there is water in the reaction system, it will affect the progress of the reaction, so it is necessary to fully remove water before the reaction. Before the reaction, put 10g DDMBDX into a vacuum drying oven to fully dry; put 5-10 fully dried 4A molecular sieves into 20ml of 1-methyl-2-pyrrolidone (NMP) solvent and seal t...

Embodiment 2

[0039] A preparation method of DDMBDX-PI / TPU with high transparency and easy processing and molding. The raw materials include: 52.75 parts of polytetrahydrofuran, 9.0 parts of 1,4-butanediol, 38.25 parts of diphenylmethane diisocyanate, Nucleating agent DDMBDX-PI0.15 parts.

[0040] The molecular weight of the polytetrahydrofuran is between 1024-1056.

[0041] The 1,4-butanediol is a colorless viscous oily liquid with a molecular weight of 90.12 and a hydroxyl value of 1000-1200 mg KOH / g.

[0042] The catalyst is selected from organotin dibutyltin dilaurate.

[0043] The preparation of DDMBDX-PI: Pretreatment: Since propyl isocyanate can react with water, if there is water in the reaction system, it will affect the progress of the reaction, so it is necessary to fully remove water before the reaction. Before the reaction, put 10g DDMBDX into a vacuum drying oven to fully dry; put 5-10 fully dried 4A molecular sieves into 20ml of 1-methyl-2-pyrrolidone (NMP) solvent and seal...

Embodiment 3

[0047] A preparation method of DDMBDX-PI / TPU with high transparency and easy processing and molding. The raw materials include: 52.75 parts of polytetrahydrofuran, 9.0 parts of 1,4-butanediol, 38.25 parts of diphenylmethane diisocyanate, Nucleating agent DDMBDX-PI0.2 parts.

[0048] The molecular weight of the polytetrahydrofuran is between 1024-1056.

[0049] The 1,4-butanediol is a colorless viscous oily liquid with a molecular weight of 90.12 and a hydroxyl value of 1000-1200 mg KOH / g.

[0050] The catalyst is selected from organotin dibutyltin dilaurate.

[0051] The preparation of DDMBDX-PI: Pretreatment: Since propyl isocyanate can react with water, if there is water in the reaction system, it will affect the progress of the reaction, so it is necessary to fully remove water before the reaction. Before the reaction, put 10g DDMBDX into a vacuum drying oven to fully dry; put 5-10 fully dried 4A molecular sieves into 20ml of 1-methyl-2-pyrrolidone (NMP) solvent and seal ...

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
hydroxyl valueaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the field of thermoplastic elastomers, and in particular relates to a preparation method and application of DDMBDX-PI / TPU with high transparency and easy processing and molding. In the present invention, a nucleating agent DDMBDX-PI is added to the thermoplastic polyurethane elastomer matrix, and the function of DDMBDX-PI is to provide heterogeneous nucleation points, which act as crystal nuclei in the resin, so that the original homogeneous nucleation becomes heterogeneous Phase nucleation, increase the number of crystal nuclei in the crystal system, increase the number of microcrystals, reduce the number of spherulites, make the crystal size of TPU thinner, increase the light transmittance, and the crystallization speed and crystallization temperature will increase accordingly, making the polymer The processing and molding time is shortened, the molding is faster, and the transparency and formability of TPU are improved without reducing its mechanical properties.

Description

technical field [0001] The invention belongs to the field of thermoplastic elastomers, and in particular relates to a preparation method and application of DDMBDX-PI / TPU with high transparency and easy processing and molding. Background technique [0002] In the field of materials, the requirements for the transparency of materials are getting higher and higher. The advantage of transparent materials is that they can be used with various colorants in subsequent processing, so transparent materials can be used in a wide range of applications. As an elastomer between plastic and rubber, thermoplastic polyurethane has both the hardness of plastic and the elasticity of rubber, and is widely used in various fields. However, the transparency of thermoplastic polyurethane needs to be improved at present. [0003] In order to shorten the processing and molding time and improve production efficiency of thermoplastic polyurethane elastomers in the production process, it is necessary t...

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): C08G18/66C08G18/48C08G18/32C08K5/29
CPCC08G18/3206C08G18/4854C08G18/6674C08K5/29
Inventor 郑玉婴陈玉环
Owner FUZHOU UNIV
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