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Steel-belt-enhanced type polyvinyl chloride spiral corrugated pipe and preparation method thereof

A technology of spiral corrugated pipes and polyvinyl chloride, applied in the field of corrugated pipes, can solve the problems of easy rupture of the pipe body, poor mechanical strength, short service life, etc., and achieve long service life, compact structure, high mechanical strength and toughness. Effect

Inactive Publication Date: 2016-12-21
JIANGSU CHANGFENG BELLOWS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the commonly used steel belt reinforced polyethylene spiral corrugated pipe has poor mechanical strength and the pipe body is easy to break, and its service life is short.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Take 85 parts by weight of polyvinyl chloride, 10 parts of polyethylene, 6 parts of polyethylene oxide, 8 parts of polybutylene terephthalate, 4 parts of dodecyl alcohol ester, 3 parts of hydrocarbyl phosphoric acid, 2 parts of aluminum hydroxide Parts, 4 parts of calcium carbonate powder, 1 part of calcium acetate, 3 parts of potassium dihydrogen phosphate.

[0015] The raw materials are added to the mixer and mixed uniformly, then sent to the internal mixer, the temperature is controlled at 110°C, the mixing time is 60 minutes, and then sent to the twin-screw extruder at 130°C for extrusion and granulation.

[0016] Soak the obtained masterbatch in a 5% acetic acid solution for 40 minutes, remove it and dry it, and then add the masterbatch to the pipe forming machine to calibrate, haul, cool and shape the pipe as required to make a polyvinyl chloride inner tube and outer tube. Pipe, spray paraffin wax on the surface of the finished inner and outer pipes for later use.

[00...

Embodiment 2

[0020] Take 95 parts by weight of polyvinyl chloride, 16 parts of polyethylene, 10 parts of polyethylene oxide, 12 parts of polybutylene terephthalate, 8 parts of didodecanol ester, 9 parts of hydrocarbyl phosphoric acid, 6 parts of aluminum hydroxide Parts, 6 parts of calcium carbonate powder, 2 parts of calcium acetate, 5 parts of potassium dihydrogen phosphate.

[0021] The raw materials are added to the mixer and mixed uniformly, then sent to the internal mixer, the temperature is controlled at 120°C, the banburying time is 40 minutes, and then sent to the twin-screw extruder at 140°C for extrusion granulation.

[0022] Soak the obtained masterbatch in 8% acetic acid solution for 30 minutes, take it out and dry, then add the masterbatch to the pipe forming machine to calibrate, haul, cool and shape the pipe as required to make the inner and outer PVC pipes. Pipe, spray paraffin wax on the surface of the finished inner and outer pipes for later use.

[0023] Heat the raw material...

Embodiment 3

[0026] Take 90 parts by weight of polyvinyl chloride, 13 parts of polyethylene, 8 parts of polyethylene oxide, 10 parts of polybutylene terephthalate, 6 parts of didodecanol ester, 6 parts of hydrocarbyl phosphoric acid, 4 parts of aluminum hydroxide Parts, 5 parts of calcium carbonate powder, 1.5 parts of calcium acetate, 4 parts of potassium dihydrogen phosphate.

[0027] The raw materials are added to the mixer and mixed uniformly, then sent to the internal mixer, the temperature is controlled at 115℃, the banbury time is 50 minutes, and then sent to the twin-screw extruder at 135℃ for extruding and granulating.

[0028] Soak the obtained masterbatch in 6.5% acetic acid solution for 35 minutes, take it out and dry, then add the masterbatch to the pipe forming machine to calibrate, haul, cool and shape the pipe as required to make a polyvinyl chloride inner tube and outer tube. Pipe, spray paraffin wax on the surface of the finished inner and outer pipes for later use.

[0029] He...

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PUM

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Abstract

The invention discloses a steel-belt-enhanced type polyvinyl chloride spiral corrugated pipe and a preparation method thereof. The corrugated pipe sequentially comprises a polyvinyl chloride inner pipe, a formed steel belt and a polyvinyl chloride outer pipe from inside to outside. The polyvinyl chloride inner pipe and the polyvinyl chloride outer pipe are composed of, by weight part, 85-95 parts of polyvinyl chloride, 10-16 parts of polyethylene, 6-10 parts of polyoxyethylene, 8-12 parts of poly(butylene terephthalate), 4-8 parts of bi( 2,2,4-Trimethyl-1,3-pentanediol monoisobutyrate ), 3-9 parts of alkyl phosphoric acid, 2-6 parts of aluminum hydroxide, 4-6 parts of calcium carbonate powder, 1-2 parts of calcium acetate and 3-5 parts of monopotassium phosphate. The scientific raw material formula and process manufacture procedures are adopted for the inner pipe and the outer pipe of the steel-belt-enhanced type polyvinyl chloride spiral corrugated pipe, special processing is also conducted on the steel belt in the interior, the structure of the whole corrugated pipe is more compact, high mechanical strength and tenacity are achieved, and the steel-belt-enhanced type polyvinyl chloride spiral corrugated pipe cannot be damaged during long-term use and is long in service life.

Description

Technical field [0001] The invention relates to a corrugated pipe, more specifically, to a steel belt reinforced polyvinyl chloride spiral corrugated pipe and a preparation method thereof. Background technique [0002] Because the steel belt reinforced polyethylene spiral corrugated pipe has the characteristics of high rigidity, high strength, corrosion resistance, abrasion resistance and strong flexibility, it is widely used in the drainage field as a cost-effective steel-plastic conforming pipe. However, the commonly used steel belt reinforced polyethylene spiral corrugated pipe has poor mechanical strength and the pipe body is easy to rupture and has a short service life. Summary of the invention [0003] The invention mainly solves the technical problems existing in the prior art, thereby providing a steel belt reinforced polyvinyl chloride spiral corrugated pipe and a preparation method thereof. [0004] The above technical problems of the present invention are mainly solved...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L9/147C08L27/06C08L23/06C08L23/30C08L67/02C08K13/02C08K3/22C08K3/26C08K5/098C08K3/32B29C69/00B29C47/92B29L23/00B29C48/92
CPCF16L9/147B29C48/0021B29C48/09B29C48/92B29C69/00B29C2948/92704B29L2023/22C08L27/06C08L2203/18C08L2205/035C08L23/06C08L23/30C08L67/02C08K13/02C08K2003/2227C08K2003/265C08K5/098C08K3/32
Inventor 姜爱荣仇祥桂
Owner JIANGSU CHANGFENG BELLOWS CO LTD