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Double-wall corrugated pipe with prefabricated sealing ring and preparation method thereof

A double-wall corrugated pipe and sealing ring technology, which is applied to pipes, rigid pipes, mechanical equipment, etc., can solve the problems of low ring stiffness, deformation of sockets and sockets, and difficulty in sealing rings, and achieve good sealing performance, Reduced low-temperature resistance and reduced material cost

Active Publication Date: 2020-09-11
KANGTAI PLASTIC SCI & TECH GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For large-diameter bellows, it is difficult to install the sealing ring, the installation efficiency is low, and when the sealing ring is not installed correctly, it is prone to leakage
The ring stiffness of the socket cloth of various corrugated pipes is lower than that of the pipe body ring, such as PE bellows and PP-UH bellows sockets and socket ring stiffness is only SN1-2
For PVC-UH water supply and drainage pipes, since they are solid-walled pipes, sealing rings can be prefabricated at the socket, and the production difficulty is low. more difficult
[0003] Moreover, during the use of the existing corrugated pipes, the connection between the socket and the socket is the weakest link. When the ground subsides, the socket and the socket will be deformed and often leak

Method used

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  • Double-wall corrugated pipe with prefabricated sealing ring and preparation method thereof
  • Double-wall corrugated pipe with prefabricated sealing ring and preparation method thereof
  • Double-wall corrugated pipe with prefabricated sealing ring and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] (1) Weigh the high-density polyethylene resin, coupling agent, compatibilizer (, reinforcing agent according to the weight part, add to the high-speed mixer and stir for 20 minutes, the temperature reaches 80 ° C, discharge into the cooling mixer, and cool to 38 ° C , and then granulated and bagged for use in the next process.

[0062] (2) Polyvinyl chloride resin, stabilizer, pigment, processing modifier, coupling agent, antioxidant, light stabilizer, compatibilizer, impact modifier are weighed according to parts by weight, and heated in a high-speed mixer , stirred for 30 minutes, and when the temperature reached 135°C, it was discharged into a cooling mixer, and after cooling to 40°C, it was bagged for use in the next process.

[0063] (3) Mix the cooled materials in steps (1) and (2), add them to the mixer and stir for 15 minutes. After the temperature reaches 80°C, discharge them into the cooling mixer, cool to 38°C, granulate and bag.

[0064] (4) Add the mixed m...

Embodiment 2

[0076] The raw materials and content of the pipe are as follows:

[0077] 150 parts of polyvinyl chloride resin; 75 parts of polyethylene resin; 25 parts of active nano-talc powder; 1 part of titanium dioxide; 3 parts of organic tin stabilizer; 10 parts of processing aid DOP; 1 part of polyethylene wax, 1 part of paraffin wax; phosphorous acid 0.5 parts of antioxidant 168, 0.5 parts of light stabilizer benzotriazole, 5 parts of compatibilizer GMA, 10 parts of impact modifier CPE, 5 parts of glass fiber, and 1 part of titanate coupling agent NDZ-401.

Embodiment 3

[0079] The raw materials and content of the pipe are as follows:

[0080] 50 parts of polyvinyl chloride resin; 150 parts of polyethylene resin; 25 parts of active nano wollastonite; 1 part of titanium dioxide; 3 parts of organic tin stabilizer; 10 parts of processing aid DOP; Phosphoric acid antioxidant 168 0.5 parts, light stabilizer benzotriazole 0.5 parts, compatibilizer GMA 5 parts, impact modifier styrene-butadiene rubber 15 parts, solubilizer boron fiber 10 parts, titanate coupling agent NDZ -401 8 copies.

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Abstract

The invention relates to the technical field of pipes, in particular to a double-wall corrugated pipe with a prefabricated sealing ring and a preparation method thereof. The corrugated pipe comprisesfollowing raw materials: 50-150 parts of polyvinyl chloride resin, 50-150 parts of polyethylene resin; 10-30 parts of a nanometer material, 0.5-5 parts of pigment, 2-20 parts of a lead-free stabilizer, 1-20 parts of a processing aid, 1-5 parts of a lubricant, 0.5-5 parts of an antioxidant, 0.5-2 parts of a light stabilizer, 1-25 parts of a compatibilizer, 1-15 parts of an impact modifier, 1-15 parts of a reinforcing agent and 0.5-10 parts of a coupling agent. The preparation method includes following steps: carrying out extrusion molding to obtain a pipe; carrying out injection molding to obtain a bell mouth reinforced sleeve; sleeving the outer wall of the bellmouth part with the bellmouth reinforcing sleeve, mounting the sealing ring on the flaring die core, and cooling to obtain the corrugated pipe with the prefabricated sealing ring. The corrugated pipe is high in ring stiffness, high in comprehensive strength, high in installation efficiency of the bell mouth and the spigot and good in sealing performance.

Description

technical field [0001] The present application relates to the technical field of pipes, in particular to a double-wall corrugated pipe with a prefabricated sealing ring and a preparation method thereof. Background technique [0002] Existing corrugated pipes have two types: integrally formed corrugated pipes and winding formed corrugated pipes, among which the integrally formed corrugated pipes are mainly PVC corrugated pipes, PE corrugated pipes, PP-UH corrugated pipes, etc., and the wound formed corrugated pipes have steel tape winding reinforced corrugated Pipe, PE winding corrugated pipe, reinforced winding corrugated pipe, etc. Whether it is a bellows that is integrally formed or wound, the socket of the bellows and the socket of the bellows are sealed and connected by a sealing ring. For large-diameter bellows, it is difficult to install the sealing ring, the installation efficiency is low, and when the sealing ring is not installed correctly, it is prone to leakage. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L23/06C08K13/04C08K3/30C08K3/04C08K7/14C08K3/34C08K3/22C08K7/06C08L55/02B29D23/00F16L9/12F16L25/10
CPCC08L27/06C08L23/06C08L55/02B29D23/001F16L9/12F16L25/10C08L2203/18C08K2201/011C08K2003/3045C08K2003/2241C08L2207/062C08K13/04C08K3/30C08K3/04C08K7/14C08K3/34C08K3/22C08K7/06
Inventor 张双全吴少明郝洪波王贝贝
Owner KANGTAI PLASTIC SCI & TECH GRP
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