Check patentability & draft patents in minutes with Patsnap Eureka AI!

A kind of low shrinkage polypropylene material and preparation method thereof

A polypropylene material and post-shrinkage technology, which is applied in the field of polymer material modification, can solve problems such as poor dimensional stability, achieve the effects of increasing strength, improving material mechanical properties, and ensuring shrinkage rate

Active Publication Date: 2022-05-10
HEFEI GENIUS NEW MATERIALS
View PDF11 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the shrinkage rate of ordinary PP+EPDM-TD20 polypropylene material is 1.0%, and the shrinkage rate after spraying is about 0.2-0.4%, and the dimensional stability is poor.

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 low shrinkage polypropylene material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 55.1 parts of copolymerized polypropylene, 15 parts of 5000 mesh talc powder, 12 parts of toughening agent POE, 17 parts of silicone modified nanogel, 0.3 part of lubricant calcium stearate, antioxidant tris[2,4-di 0.3 parts of tert-butylphenyl] phosphite, 0.3 parts of coupling agent γ-aminopropyltriethoxysilane were placed in a high-speed mixer at a temperature of 60°C and 250 rpm for 6 minutes; The raw materials are fed into the twin-screw extruder from the main feeding port, extruded and granulated by the twin-screw, and the processing temperature is 170-250°C, and the low after-shrinkage polypropylene material can be prepared.

Embodiment 2

[0031] 59.1 parts of homopolypropylene, 20 parts of 8000 mesh talcum powder, 10 parts of toughening agent POE, 10 parts of silicone modified nanogel, 0.3 part of lubricant zinc stearate, antioxidant tetrakis [β-(3 , 0.3 parts of 5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester, 0.3 parts of coupling agent γ-aminopropyl triethoxysilane placed in a high-speed mixer, temperature 65 ° C, 220 rpm Mix for 8 minutes per minute; then feed the mixed material into the twin-screw extruder from the main feeding port, extrude and granulate through the twin-screw, and the processing temperature is 170-250°C, and the low after-shrinkage polypropylene can be prepared Material.

Embodiment 3

[0033] 43.8 parts of copolymerized polypropylene, 25 parts of 6000 mesh talcum powder, 15 parts of toughening agent POE, 15 parts of silicone modified nanogel, 0.4 part of lubricant white oil, antioxidant tetrakis [β-(3,5- 0.4 parts of di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester, 0.4 parts of coupling agent γ-aminopropyltriethoxysilane placed in a high-speed mixer, temperature 55 ° C, 270 rpm mixing 5 minutes; then feed the mixed material into the twin-screw extruder from the main feeding port, extrude and granulate through the twin-screw, and the processing temperature is 170-250°C, and the low after-shrinkage polypropylene material can be prepared.

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
particle size (mesh)aaaaaaaaaa
Login to View More

Abstract

The invention relates to the field of modification of polymer materials, and provides a low aftershrinkage polypropylene material and a preparation method thereof, comprising 28.5-79.4 parts of polypropylene, 10-30 parts of talcum powder, 5-20 parts of toughening agent, organic 5-20 parts of silicon-modified nanogel, 0.2-0.5 part of lubricant, 0.2-0.5 part of antioxidant, 0.2-0.5 part of coupling agent, prepared by distributive mixing and twin-screw extrusion granulation. The polypropylene material of the present invention has high dimensional stability and low after-shrinkage rate, and the product can maintain the performance of small dimensional change after 24 hours or after spraying and painting, and is suitable for large-scale products with high size requirements , such as a car bumper.

Description

technical field [0001] The invention relates to the field of polymer material modification, in particular to a low after-shrinkage polypropylene material and a preparation method thereof. Background technique [0002] Due to its low price, easy processing and molding, low density and excellent mechanical properties, polypropylene material has a wide range of applications and is widely used in the fields of automobiles and home appliances. However, at present, many large-scale automotive parts, such as bumpers and instrument panels, have high requirements for dimensional stability. Usually, the parts need to be subjected to post-processing processes such as slush molding and spray painting, which require the parts to have a low The post-shrinkage rate to ensure the size and installation of the parts. [0003] At present, the shrinkage rate of ordinary PP+EPDM-TD20 polypropylene material is 1.0%, and the shrinkage rate after spraying is about 0.2-0.4%, and the dimensional sta...

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): C08L23/14C08L23/08C08L83/04C08L91/00C08K13/02C08K3/34C08K5/098C08K5/526C08K5/544C08K5/134
CPCC08L23/14C08L2205/03C08L2205/035C08K2201/003C08K2201/014C08L23/0815C08L83/04C08K13/02C08K3/34C08K5/098C08K5/526C08K5/544C08K5/1345C08L91/00C08L23/12
Inventor 杨桂生计娉婷朱敏廖雄兵
Owner HEFEI GENIUS NEW MATERIALS
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