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

Novel high-intensity high heat-resistance polypropylene modified composite material and preparation method thereof

A composite material, polypropylene technology, applied in the field of polypropylene materials, can solve problems such as unsatisfactory improvement in tensile strength and rigidity, and achieve the effect of improving surface finish, wide application range, and improving strength and heat resistance

Inactive Publication Date: 2010-04-14
SUZHOU HESHENG NEW MATERIALS
View PDF0 Cites 34 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the unsatisfactory improvement of the tensile strength and rigidity of existing polypropylene modified materials, and provide a new high-strength and high-heat-resistant polypropylene modified composite material and its preparation method

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
  • Novel high-intensity high heat-resistance polypropylene modified composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] In the Mix evenly in the mixer, knead and extrude the mixture in the twin-screw extruder, add 5 parts of alkali-free glass fiber yarn from the glass fiber inlet of the extruder, and set the temperature of each section of the extruder to T 1 =170°C, T 2 =180°C, T 3 =190°C, T 4 =205°C, T 5 =210°C, T 6 = 220°C, rotating speed 350r / min, after cooling and pelletizing, polypropylene pellets mixed with calcium sulfate whiskers and glass fibers were obtained.

Embodiment 2

[0027] Mix 69.4 parts of polypropylene, 10 parts of calcium sulfate whiskers, 15 parts of polypropylene grafted maleic anhydride copolymer, 0.1 part of nucleating agent, 0.3 part of antioxidant and 0.2 part of lubricant in a mixer, and the mixture is Mixing and extrusion in the twin-screw extruder, 5 parts of glass fiber is added from the glass fiber inlet of the extruder, and the temperature of each section of the extruder is set to T 1 =170°C, T 2 =190°C, T 3 =195°C, T 4 =200°C, T 5 =205°C, T 6 = 210°C, rotating speed 300r / min, after cooling and pelletizing, polypropylene pellets mixed with calcium sulfate whiskers and glass fibers were obtained.

Embodiment 3

[0029] In the Mix evenly in the mixer, knead and extrude the mixture in the twin-screw extruder, add 25 parts of alkali-free glass fiber yarn from the glass fiber inlet of the extruder, and set the temperature of each section of the extruder to T 1 =170°C, T 2 =180°C, T 3 =190°C, T 4 =200°C, T 5 =205°C, T 6 = 220°C, the rotating speed is 300r / min, after cooling and pelletizing, polypropylene pellets mixed with calcium sulfate whiskers and glass fibers are obtained.

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
densityaaaaaaaaaa
diameteraaaaaaaaaa
melt flow indexaaaaaaaaaa
Login to View More

Abstract

The invention relates to a novel high-intensity high heat-resistance polypropylene modified composite material and a preparation method thereof. The novel high-intensity high heat-resistance polypropylene modified composite material comprises the following components: 49-69.4 percent of polypropylene, 10-30 percent of calcium sulphate whiskers, 5-25 percent of glass fibers, 5-15 percent of maleic anhydride grafted polypropylene, 0.1-0.2 percent of nucleating agents, 0.3-0.6 percent of antioxygen and 0.2-0.5 percent of lubricating agents. The preparation method comprises the following steps: firstly uniformly mixing all the components except the glass fibers in a mixer according to the proportion; mixing the mixture in a double-screw extruder; adding the glass fibers from a fiberglass intake of the double-screw extruder; and mixing the mixture in the double-screw extruder, extruding, cooling and pelletizing. The calcium sulphate whiskers and the glass fibers are mixed to reinforce the polypropylene; in addition, with the special structure of the calcium suhphate whiskers, not only the intensity and the heat-resistance of the polypropylene modified material can be enhanced, but also the size stability and the surface finish of products can be improved, and the application field of the polypropylene modified material can be enlarged.

Description

technical field [0001] The invention relates to a polypropylene material, in particular to a novel high-strength and high-heat-resistant polypropylene modified composite material and a preparation method thereof. Background technique [0002] Glass fiber reinforced polypropylene (GF / PP) composites have replaced some engineering plastics and are widely used in industry. However, the surface of glass fiber reinforced polypropylene composite products is relatively rough, and the products are easy to warp and deform, so they are not suitable for injection molding. Parts with high appearance requirements and precise structure. Calcium sulfate (CaSO 4 ) Whisker reinforced polypropylene does not have this problem. [0003] CaSO 4 Whiskers have good dispersion and are a fibrous single crystal with an aspect ratio greater than 30. They have extremely high strength and rigidity, and the strength loss is minimal when the temperature rises. They can be used for plastic modification 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 Applications(China)
IPC IPC(8): C08L23/12C08L51/06C08K13/04C08K7/04C08K7/14
Inventor 汪倩文武俊
Owner SUZHOU HESHENG NEW MATERIALS
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