Polypropylene resin composition and production process for large-caliber wall tube with hot-state winding structure

A technology of polypropylene resin and production process, which is applied in the direction of tubular objects, applications, household appliances, etc., can solve the problems of many ring stiffness raw materials, no obvious advantages, and low ring stiffness, and achieve excellent impact resistance and long service life , the effect of high tensile modulus

Inactive Publication Date: 2013-04-17
重庆顾地塑胶电器有限公司 +1
View PDF2 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003]At present, high-density polyethylene is used as the main material, and the thermal winding process is used to produce structural wall pipes. The pipe diameter can reach 300-4000 mm, but this The ring stiffness of the structural wall pipe produced by this process is not high. For example, when the diameter of the pipe is ≥ 1800 mm, it is difficult to achieve the ring stiffness exceeding SN8 and consumes a lot of raw materials, and its manufacturing cost is very high.
At present, there are also a small number of sewage and drainage pipes in China that use polypropylene as the main material, such as polypropylene double-wall corrugated pipes, but due to the limitation of production equipment, the maximum diameter of the pipe can only be 1800mm
In recent years, the high-density polyethylene used in the pressure pipe field has gradually improved, but the new PE80 and PE100 have no obvious advantages for high ring stiffness pipes

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

[0052] The polypropylene resin composition of the present embodiment comprises following weight ratio components:

[0053] Block copolymerized polypropylene: 75 parts;

[0054] Enhanced modified masterbatch: 25 parts;

[0055] Processing modifier: 1 part;

[0056] Impact modified material: 3 parts;

[0057] Masterbatch: 1 part.

[0058] Among them, the elastic modulus of block copolymerized polypropylene is 1700MPa, and the melt index is 0.1g / 10min; the reinforced modified masterbatch is composed of PP resin, inorganic minerals, dispersing aids and coupling agents, and the enhanced modified masterbatch The particle size is 3000 mesh; the processing modifier is polyacrylate polymer material; the impact modification material is ethylene-propylene rubber (EPR) with good dispersion; the color masterbatch is a mixture of block copolymerized polypropylene and carbon black .

[0059] The polypropylene resin composition of this embodiment uses block copolymerized polypropylene as...

Embodiment 2

[0070] The polypropylene resin composition of the present embodiment comprises following weight ratio components:

[0071] Block copolymerized polypropylene: 78 parts;

[0072] Enhanced modified masterbatch: 22 parts;

[0073] Processing modifier: 1.8 parts;

[0074] Impact modified material: 5 parts;

[0075] Color masterbatch: 1.5 parts.

[0076] Among them, the elastic modulus of block copolymerized polypropylene is 1700MPa, and the melt index is 0.1g / 10min; the reinforced modified masterbatch is composed of PP resin, inorganic minerals, dispersing aids and coupling agents, and the enhanced modified masterbatch The particle size is 1250 mesh; the processing modifier is polyacrylate polymer material; the impact modification material is ethylene-propylene rubber (EPR) with good dispersion; the color masterbatch is a mixture of block copolymerized polypropylene and carbon black .

[0077] The polypropylene resin composition of this embodiment uses block copolymerized poly...

Embodiment 3

[0088] The polypropylene resin composition of the present embodiment comprises following weight ratio components:

[0089] Block copolymerized polypropylene: 80 parts;

[0090] Enhanced modified masterbatch: 20 parts;

[0091] Processing modifier: 1.5 parts;

[0092] Impact modified material: 3 parts;

[0093] Color masterbatch: 1.5 parts.

[0094] Among them, the elastic modulus of block copolymerized polypropylene is 1700MPa, and the melt index is 0.1g / 10min; the reinforced modified masterbatch is composed of PP resin, inorganic minerals, dispersing aids and coupling agents, and the enhanced modified masterbatch The particle size is 2000 mesh; the processing modifier is polyacrylate polymer material; the impact modification material is ethylene-propylene rubber (EPR) with good dispersion; the color masterbatch is a mixture of block copolymerized polypropylene and carbon black .

[0095] The polypropylene resin composition of this embodiment uses block copolymerized poly...

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
elastic modulusaaaaaaaaaa
melt flow indexaaaaaaaaaa
particle sizeaaaaaaaaaa
Login to view more

Abstract

The invention discloses a polypropylene resin composition. The polypropylene resin composition comprises the following components in parts by weight: 75 to 85 parts of block polymerization polypropylene, 15 to 25 parts of reinforced modified master batch, 1 to 2 parts of a processing modifier, 3 to 8 parts of an anti-impaction modified material, and 0 to 2 parts of color concentrate. The invention also discloses a production process for a large-caliber wall tube with a hot-state winding structure. The production process comprises the following steps of: (1) blending and mixing the materials; (2) drying and preheating: drying and preheating the polypropylene resin composition by using hot blast; (3) performing plasticization and extrusion and molding by winding: plasticizing and extruding the polypropylene resin composition which is obtained in step (2), and performing hot-state winding on the extruded molten-state plastic to form a tubular product; (4) molding by cooling; (5) leveling by cutting; and (6) demolding: demolding the tubular product from a hot-state winding forming mold. The large-caliber hot-state winding structure wall tube produced from the polypropylene resin composition has high mechanical property, chemical corrosion resistance, high temperature resistance and long service life.

Description

technical field [0001] The invention relates to a plastic composition, in particular to a high-strength modified polypropylene resin composition and a production process for using the polypropylene resin composition to make a large-caliber thermal winding structure wall pipe. Background technique [0002] Due to the requirements for environment, energy and sanitation performance, it has become a consensus to replace traditional pipes with plastic pipes. The pipe practice of developed countries shows that polyolefin pipes will gradually dominate in the future, especially in large-diameter solid-wall pipes and structures. wall pipe system. In traditional plastic drainage pipes, the plastics used to make the pipes mainly include polyvinyl chloride and polyethylene. However, high-density polyethylene (HDPE) materials still have technical limitations when used in chemical industry drainage and sewage piping systems under high temperature and pressure, so polypropylene is the mat...

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): C08L53/00C08L23/12C08L33/04C08L23/16C08K3/04C08J3/22B29C53/56B29L23/00
Inventor 李贤梅付志敏蒋明中
Owner 重庆顾地塑胶电器有限公司
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