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

Method for molding low-temperature-resistant high-strength polyethylene pipe applied to water supply

A technology for polyethylene pipes and molding methods, which is applied in applications, household appliances, tubular objects, etc., can solve the problems of poor surface smoothness of pipes, large particle size of black masterbatch, rupture of pressure pipes, etc., and achieve hydraulic strength and pipe resistance Improvement of aging performance, improvement of strength and low temperature resistance, and improvement of impact strength of pipes

Inactive Publication Date: 2018-12-07
胡建芳
View PDF0 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the existing polyethylene pipes for water supply, the particle size of the black masterbatch is large, the dispersibility is poor, the smoothness of the pipe surface is poor, and the undispersed carbon black agglomerates existing in the pipe wall may cause premature rupture of the pressure pipe

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

[0019] A molding method of low-temperature high-strength polyethylene pipe for water supply includes the following steps:

[0020] (1) The pipe includes the following parts by weight: 100 parts of polyethylene, 20 parts of polyolefin, 10 parts of CPVC resin, 1 part of polyvinyl chloride resin, 1 part of barium laurate, 1 part of ACR-201, titanium 5 parts of white powder, 1 part of talc, 0.5 parts of antioxidant 1010; 0.5 parts of antioxidant 1076; the particle size of titanium dioxide is 10nm;

[0021] (2) Vacuum treatment of polyethylene, polyolefin, CPVC resin and polyvinyl chloride resin;

[0022] (3) Add polyethylene and polyolefin to the mixing pot at low speed, start high-speed mixing, add CPVC resin and polyvinyl chloride resin to the mixing pot at 70℃, add barium laurate at 80℃, Add ACR-201, titanium dioxide and talc at 110℃; the speed of high-speed mixing is 430rpm;

[0023] (4) Use a conical twin-screw extruder to extrude into pipes, the barrel temperature is controlled at ...

Embodiment 2

[0025] A molding method of low-temperature high-strength polyethylene pipe for water supply includes the following steps:

[0026] (1) The pipe includes the following components in parts by weight: 100 parts of polyethylene, 27 parts of polyolefin, 13 parts of CPVC resin, 4 parts of polyvinyl chloride resin, 2 parts of barium laurate, 1.4 parts of ACR-201, titanium 8 parts of white powder, 2.7 parts of talc powder, 1.6 parts of antioxidant 1010; the particle size of titanium dioxide is 16nm;

[0027] (2) Vacuum treatment of polyethylene, polyolefin, CPVC resin and polyvinyl chloride resin;

[0028] (3) Add polyethylene and polyolefin to the mixing pot at low speed, start high-speed mixing, add CPVC resin and polyvinyl chloride resin to the mixing pot at 70℃, add barium laurate at 80℃, Add ACR-201, titanium dioxide, and talc at 110℃; the speed of high-speed mixing is 500rpm;

[0029] (4) Use a conical twin-screw extruder to extrude into pipes, the barrel temperature is controlled at 1...

Embodiment 3

[0031] A molding method of low-temperature high-strength polyethylene pipe for water supply includes the following steps:

[0032] (1) The pipe includes the following components in parts by weight: 100 parts of polyethylene, 30 parts of polyolefin, 20 parts of CPVC resin, 5 parts of polyvinyl chloride resin, 3 parts of barium laurate, 2 parts of ACR-201, titanium 10 parts of white powder, 3 parts of talc powder, 2 parts of antioxidant 1076; the particle size of titanium dioxide is 20nm;

[0033] (2) Vacuum treatment of polyethylene, polyolefin, CPVC resin and polyvinyl chloride resin;

[0034] (3) Add polyethylene and polyolefin to the mixing pot at low speed, start high-speed mixing, add CPVC resin and polyvinyl chloride resin to the mixing pot at 70℃, add barium laurate at 80℃, Add ACR-201, titanium dioxide, and talc at 110℃; the speed of high-speed mixing is 860rpm;

[0035] (4) Use a conical twin-screw extruder to extrude into a tube, the barrel temperature is controlled at 150℃,...

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 diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
Login to View More

Abstract

The invention provides a method for molding a low-temperature-resistant high-strength polyethylene pipe applied to water supply. The method comprises the following steps: (1) preparing raw materials consisting of, by weight, 100 parts of polyethylene, 20 to 30 parts of polyolefin, 10 to 20 parts of CPVC resin, 1 to 5 parts of polyvinyl chloride resin, 1 to 3 parts of barium laurate, 1 to 2 parts of ACR-201, 5 to 10 parts of titanium dioxide, 1 to 3 parts of talcum powder and 1 to 2 parts of an anti-oxidant; (2) subjecting polyethylene, polyolefin, CPVC resin and polyvinyl chloride resin to vacuum-pumping; (3) adding polyethylene and polyolefin into a mixing pot at a low rotation speed, starting high-speed mixing, adding the CPVC resin polyvinyl chloride resin into the mixing pot at 70 DEGC, adding barium laurate at 80 DEG C, adding ACR-201, titanium dioxide and talcum powder at 110 DEG C; and (4) carrying out extruding via a conical twin-screw extruder so as to form a pipe, and afterextrusion, carrying out vacuum sizing and cooling so as to obtain the low-temperature-resistant high-strength polyethylene pipe. The method of the invention has the advantages of high extrusion speedand high production efficiency; and the prepared pipe is remarkably improved in strength, low temperature resistance and other performance.

Description

Technical field [0001] The invention relates to a pipe extrusion molding method, in particular to a molding method of a low-temperature high-strength polyethylene pipe for water supply. Background technique [0002] Internationally, polyethylene pipes have been used as pressure pipes for 50 years. Many countries have been applied in water and gas pipelines. In my country, since the National Bureau of Quality and Technical Supervision issued the national standard (GB / T13663-2000) for Polyethylene (PE) Pipes for Water Supply on November 21, 2000, it has promoted the production and application of polyethylene water supply pipes in China. However, in the existing polyethylene pipes for water supply, the black masterbatch has a large particle size, poor dispersion, and poor pipe surface smoothness. Undispersed carbon black agglomerates in the pipe wall may cause premature rupture of the pressure pipe . [0003] Therefore, a new polyethylene pipe for water supply is needed. Summary o...

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): B29C47/92B29B7/00B29L23/00B29K23/00B29C48/92
CPCB29B7/005B29K2023/06B29L2023/22
Inventor 胡建芳
Owner 胡建芳
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