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

Polypropylene/calcium carbonate nanocomposite and preparation method thereof

A technology of nanocomposite and polypropylene homopolymer, applied in the field of polypropylene/calcium carbonate nanocomposite and polypropylene composite

Inactive Publication Date: 2011-05-04
INST OF CHEM CHINESE ACAD OF SCI
View PDF0 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are no relevant reports on this type of research

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
  • Polypropylene/calcium carbonate nanocomposite and preparation method thereof
  • Polypropylene/calcium carbonate nanocomposite and preparation method thereof
  • Polypropylene/calcium carbonate nanocomposite and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The polypropylene homopolymer is PP1003 (Beijing Yanshan Petrochemical Co., Ltd.), and the weight-average molecular weight of the polypropylene homopolymer is 400,000; the nano-calcium carbonate is provided by Beijing Xinlu Boao Nanotechnology Co., Ltd.

[0029] Surface treatment of nano-calcium carbonate: dry 200g of nano-calcium carbonate in an oven, remove moisture, and pulverize in a high-speed pulverizer for 4 minutes. Then pass the nano-calcium carbonate powder through a 500-mesh sieve and vibrate for about 10 minutes to obtain the nano-calcium carbonate powder with a particle size of 20-200 nm.

[0030] The 100g nano-calcium carbonate powder and 3g calcium stearate were mixed for 4 minutes, then the mixed nano-calcium carbonate and calcium stearate were placed in the blender, and the temperature was 100-130°C at a temperature of 100-130°C. Stir for 10-15 minutes under high-speed stirring at 2500-3000 rpm, and then cool down to room temperature to obtain nano-calc...

Embodiment 2

[0033] The nano-calcium carbonate of polypropylene homopolymer and surface modification is the same as embodiment 1.

[0034] In terms of weight percentage, uniformly mix 99% polypropylene homopolymer and 1% surface-modified nano-calcium carbonate to obtain a mixture, and then melt the mixture with a twin-screw extruder at a temperature of 190-220°C blending to obtain a composite of polypropylene and surface-modified nano-calcium carbonate; the mechanical properties of gained polypropylene and surface-modified nano-calcium carbonate composite are shown in figure 1 , 2 , 3 shown.

Embodiment 3

[0036] The nano-calcium carbonate of polypropylene homopolymer and surface modification is the same as embodiment 1.

[0037] In percent by weight, uniformly mix 98% polypropylene homopolymer and 2% surface-modified nano-calcium carbonate to obtain a mixture, and then melt the mixture with a twin-screw extruder at a temperature of 190-220°C blending to obtain a composite of polypropylene and surface-modified nano-calcium carbonate; see the mechanical properties of the composite of polypropylene and surface-modified nano-calcium carbonate figure 1 , 2 , 3 shown.

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 sizeaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the technical field of high molecular materials, and relates to polypropylene composite, in particular to polypropylene / calcium carbonate nanocomposite and a preparation method thereof. The polypropylene / calcium carbonate nanocomposite is prepared by the following steps of: uniformly mixing 90 to 99.5 weight percent of polypropylene homopolymer and 0.5 to 10 weight percent of surface-modified nano-calcium carbonate to obtain a mixture; and melting, blending and extruding the mixture by using a double screw extruder at the temperature of between 190 and 220 DEG C, performing strip casting, and granulating to obtain high-strength high-modulus polypropylene and surface-modified calcium carbonate nanocomposite. The bending modulus and the bending strength of the polypropylene and surface-modified calcium carbonate nanocomposite are obviously improved compared with pure polypropylene; meanwhile, the impact toughness of the composite is also slightly improved compared with the pure polypropylene.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, in particular to a polypropylene composite, in particular to polypropylene (PP) / calcium carbonate (CaCO 3 ) nanocomposite, and the preparation method of the nanocomposite. Background technique [0002] Polypropylene has been widely used since its industrialization in 1957 due to its excellent physical and chemical properties and low price. However, polypropylene also has low modulus and strength, which limits its industrial application. Research on high-performance modification of PP, so that some important performance indicators can meet or approach the requirements of engineering plastics, so as to expand the application field of polypropylene, has important application value. [0003] It is an effective way to obtain low-cost and high-performance PP by adding inorganic particles to improve the performance of polymers. Especially with the development of nanotechnology and inorganic...

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
IPC IPC(8): C08L23/12C08K9/04C08K3/26
Inventor 李良钊张秀芹李荣波赵莹王笃金
Owner INST OF CHEM CHINESE ACAD OF SCI
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