Creep-resistant polypropylene composition and preparation method and application thereof

A polypropylene composition and creep-resistant technology, which is applied in the field of material engineering, can solve the problem of less modified materials such as creep-resistant polypropylene, and achieve the effects of meeting the requirements of use, small deformation, and stable dimensions

Active Publication Date: 2012-02-08
KINGFA SCI & TECH CO LTD +2
View PDF6 Cites 48 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Judging from the domestic and foreign patents that have been publicly reported so far, there are few creep-resistant polypropylene modified materials related to the field of automobiles and household appliances.

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A preparation of a creep-resistant polypropylene composition, comprising the following steps:

[0038] The raw material is weighed according to the formula of table 1, and the melt flow rate (MFR) of homopolypropylene and copolymerized polypropylene wherein is 30g / 10min; Wherein elastomer is the copolymer of ethylene-alpha-olefin, and its density is 0.870 g / cm 3 , the melt mass flow rate is 0.5g / 10min (2.16kg, 190°C), the carbon number of α-olefin is 8; the high aspect ratio (HAR) inorganic filler is HAR talc powder, the particle size is 4.7 μm, the aspect ratio is 15:1; the nucleating agent 1 is 2,2'-methylene-bis(4,6-di-tert-butylphenoxy)sodium phosphate; the nucleating agent 2 is Sodium bicyclo[2,2,1]heptanedicarboxylate; the nucleating agent 3 is sodium benzoate; the antioxidant is 2,6-di-tert-butyl p-cresol; the weathering agent is 2 -Hydroxy-4-methoxybenzophenone; the lubricant is calcium stearate.

[0039] Mix the rest of the ingredients except the HAR inorgan...

Embodiment 2-7

[0041] Examples 2-7 The creep-resistant polypropylene composition has a raw material formula according to Table 1, and its preparation steps and parameters are 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

PropertyMeasurementUnit
melt flow indexaaaaaaaaaa
densityaaaaaaaaaa
melt flow indexaaaaaaaaaa
Login to view more

Abstract

The invention belongs to the field of material engineering and discloses a creep-resistant polypropylene composition and a preparation method and application thereof. The creep-resistant polypropylene composition is prepared from 40-80 percent by weight of polypropylene resin, 5-30 percent by weight of elastomer, 10-40 percent by weight of high-aspect-ratio (HAR) inorganic filler and 0.01-0.5 percent by weight of nucleating agent, wherein the nucleating agent is an alpha-crystal nucleating agent. In the invention, the polypropylene composition modified by the HAR inorganic filler and the alpha-crystal nucleating agent has high creep resistance; and an injection molding piece prepared from the polypropylene composition has stable size and small deformation under practical use conditions, and can fully meet the using requirements of relevant industries such as automobiles, home appliances and the like.

Description

technical field [0001] The invention belongs to the field of material engineering, and in particular relates to a polypropylene composition, in particular to a creep-resistant polypropylene composition and a preparation method and application thereof. Background technique [0002] Due to its light weight, solvent resistance, easy processing, excellent mechanical properties, and easy recycling, polypropylene has been widely used in the automotive industry, home appliances, and machinery. However, the creep resistance of polypropylene is poor, and when it is used as a structural material in some occasions, it tends to lose stability in advance due to large creep. For example, in the automotive field, as we all know, auto parts need to be assembled and fixed on the car body by bayonet or other methods. Due to the large difference in thermal expansion coefficient between plastic and metal parts, creep will occur when the temperature changes. In this case, if the material itself...

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): C08L23/12C08L23/14C08L23/08C08K13/02C08K3/34C08K7/02C08K5/523C08K5/098C08K5/13
Inventor 陈锐李永华罗忠富朱文何浏炜刘奇祥宁凯军郑明嘉
Owner KINGFA SCI & TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap