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

A polyoxymethylene compound pom-β-cdpu with high thermal stability and preparation method thereof

A polyoxymethylene compound and high thermal stability technology, applied in the field of polymer materials, can solve the problems of material performance degradation, endangering human health, poor thermal stability, etc., and achieve the effect of improving strength, ensuring mechanical properties, and improving thermal stability

Active Publication Date: 2016-08-03
安徽贺赢新材料科技有限公司
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to its special molecular structure, its thermal stability is poor, and it will degrade during melt processing, thereby producing a large amount of formaldehyde gas, which not only pollutes the environment and endangers human health, but is also easily oxidized to formic acid, which leads to the occurrence of polyoxymethylene. Acid hydrolysis, which further reduces the performance of the material

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 polyoxymethylene compound pom-β-cdpu with high thermal stability and preparation method thereof
  • A polyoxymethylene compound pom-β-cdpu with high thermal stability and preparation method thereof
  • A polyoxymethylene compound pom-β-cdpu with high thermal stability and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-1

[0029] Dissolve 10g of β-cyclodextrin in 30ml of DMF solvent and 1g of polyester thermoplastic polyurethane elastomer in 20mL of DMF solvent to obtain the DMF solution of cyclodextrin and the DMF solution of polyurethane respectively; then drop the above DMF solution of polyurethane at 70°C Add to the DMF solution of the above cyclodextrin, heat and stir for 4 hours, then cool down to room temperature, settle in excess distilled water after standing overnight to obtain the cyclodextrin inclusion complex of polyurethane, fully dry and grind for later use.

Embodiment 1-2

[0031] Dissolve 20g of β-cyclodextrin in 60ml of DMF solvent and 1g of polyester thermoplastic polyurethane elastomer in 20mL of DMF solvent to obtain the DMF solution of cyclodextrin and the DMF solution of polyurethane respectively; then drop the above DMF solution of polyurethane at 50°C Add it to the DMF solution of the above cyclodextrin, heat and stir for 8 hours, then cool down to room temperature, settle in excess distilled water after standing overnight to obtain the cyclodextrin inclusion complex of polyurethane, fully dry and grind it for later use.

Embodiment 1-3

[0033] Dissolve 15g of β-cyclodextrin in 45ml of DMF solvent and 1g of polyester thermoplastic polyurethane elastomer in 20mL of DMF solvent to obtain the DMF solution of cyclodextrin and the DMF solution of polyurethane respectively; then drop the above DMF solution of polyurethane at 90°C Add to the DMF solution of the above cyclodextrin, heat and stir for 2 hours, then cool down to room temperature, settle in excess distilled water after standing overnight to obtain the cyclodextrin inclusion compound of polyurethane, fully dry and grind for later use.

[0034] Then take the cyclodextrin inclusion compound prepared in Examples 1-1 to 1-3 to prepare a polyoxymethylene complex, and the specific examples are as follows:

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 discloses a polyformaldehyde compound POM-beta-CDPU with high thermal stability and a preparation method thereof. The polyformaldehyde compound POM-beta-CDPU is a blend and the blend comprises polyformaldehyde and a cyclodextrin inclusion compound, and the mass ratio of the polyformaldehyde to the cyclodextrin inclusion compound is 100:(0.5-2). The preparation method comprises the following specific steps: respectively carrying out vacuum drying on the polyoxymethylene and the cyclodextrin inclusion compound for 48-72h at a temperature of 80-110 DEG C; adding the polyoxymethylene and the cyclodextrin inclusion compound which are dried in a melt-mixing device in a mass ratio of 100:0.5-2, and carrying out melt-mixing at a temperature of 180-200 DEG C so as to obtain a mixture; and discharging the mixture from the melt-mixing device, reducing the mixture to room temperature, and crystallizing the mixture, thus obtaining the polyformaldehyde compound POM-beta-CDPU with high thermal stability. The polyformaldehyde compound disclosed by the invention greatly improves the thermal stability of polyformaldehyde and ensures the excellent mechanical properties of materials.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and relates to a polyoxymethylene compound POM-β-CDPU with high thermal stability and a preparation method thereof, in particular to a cyclodextrin inclusion compound obtained by a cyclodextrin inclusion compound with high thermal stability Polyoxymethylene composite POM-β-CDPU with stability and excellent mechanical properties and a preparation method thereof. Background technique [0002] Polyoxymethylene (POM) is widely used because of its excellent comprehensive properties. Its main advantages include high strength, good rigidity, high hardness, excellent solvent resistance and corrosion resistance, and good molding performance, so it is very ideal. One of engineering plastics. However, due to its special molecular structure, its thermal stability is poor, and it will be degraded during melt processing, thereby producing a large amount of formaldehyde gas, which not only pollutes 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): C08L59/00C08L5/16C08L75/04C08L75/06
Inventor 李勇进郑鑫王莲
Owner 安徽贺赢新材料科技有限公司
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