Chlorinated polyvinyl chloride double-wall corrugated pipe formulation and its production process

A chlorinated polyvinyl chloride, double-wall corrugated pipe technology, applied in the direction of pipes, rigid pipes, pipes/pipe joints/fittings, etc., can solve the problems of poor fluidity, poor pre-plasticity, poor processing performance, etc. High, low manufacturing cost, good heat resistance

Inactive Publication Date: 2005-06-29
杭州波达塑料科技股份有限公司
View PDF0 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A chlorinated polyvinyl chloride resin (i.e. CPVC resin) with good heat resistance and a molecular structure similar to hard polyvinyl chloride resin (i.e. PVC resin) has attracted people's attention, but when using CPVC resin as a material for trial production, Due to the following problems, it is difficult to make double-wall corrugated pipes. The reasons are: 1) CPVC resin is easy to absorb moisture and has very poor processing performance. During processing, the processing temperature needs to be increased due to the high melt viscosity and poor fluidity, but

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
  • Chlorinated polyvinyl chloride double-wall corrugated pipe formulation and its production process
  • Chlorinated polyvinyl chloride double-wall corrugated pipe formulation and its production process
  • Chlorinated polyvinyl chloride double-wall corrugated pipe formulation and its production process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0027] Embodiment The structure of the chlorinated polyvinyl chloride double-wall corrugated pipe of this embodiment can be obtained from figure 1 with figure 2 It can be seen in the figure that it contains the outer wall 1a and the inner wall 1b, and the air that enters the space during the molding process is left between the inner and outer walls.

[0028] The formula of the chlorinated polyvinyl chloride double-wall bellows of the present embodiment (each component is represented by weight parts) is as follows: chlorinated polyvinyl chloride resin (being CPVC resin) 50-80; Polyvinyl chloride resin (being PVC resin) 20-50; composite lead salt stabilizer 4.5-7.5; stearic acid 0.6-0.8; polyethylene wax 0.3; paraffin wax 0.3; superfine calcium carbonate 4-10; impact resistance ACR 6-8.

[0029] The molecular structure of CPVC resin in the above formula is similar to that of PVC resin, and they have good compatibility. They can be mixed in any ratio to improve the processing f...

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

No PUM Login to view more

Abstract

Disclosed are dispensation of perchlorinated polyvinyl chloride wave-shaped pipe and its productive technique, especially that for high volume cable and its productive technique. The dispensation (mass ratio) is: perchlorinated polyvinyl chloride resin(50-80), polyvinyl chloride resin (20-50), compound lead salt stabalizer (4.5-7.5), stearic acid (0.6-0.8), polyethylene(0.3), paraffin(0.3), calcium carbonate (4-10) and anti-impact ACR (6-8). Its productive technique is: mix the mixture for 10-13min, till the temperature reaches 120-135deg.c, cool it to be 45-55deg.c and feed the material, finally press and plasticize to form the product in 170-185deg.c. The invention produces the wave-shaped pipe whose hot deformative temperature is not lower than 93deg.c, with sentific dispensation and reasonable productive technique, which can solve the protective jacket problem existing in high volume cable underground.

Description

technical field [0001] The present invention relates to a double-wall corrugated pipe used for conveying solid and liquid materials or for sheathing various underground pre-embedded lines, especially a kind of pre-embedded underground line for sheathing prone to heat, such as sheathing underground high-voltage Formula and production process of heat-resistant double-wall corrugated pipe for power cables. Background technique [0002] Existing rigid polyvinyl chloride double-wall corrugated pipes for conveying solid and liquid materials or for sheathing underground embedded wires are widely used because of their light texture, high rigidity and strength, and moisture-proof and corrosion-resistant characteristics. It is used to sheath the underground pre-embedded wires at various normal temperatures to bear the weight of the soil layer above the pre-embedded wires, pedestrians, vehicles, etc., as well as the impact from the ground, but it is poor in heat resistance and thermall...

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): C08K5/09C08L27/24F16L9/133
Inventor 吴小波
Owner 杭州波达塑料科技股份有限公司
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