PP (polypropylene) internal spiral pipe for drainage and preparation method of PP internal spiral pipe

A polypropylene material and polypropylene technology, applied in the field of polypropylene inner spiral pipe for drainage and its preparation, can solve the problem of unreasonable design of height and pitch distance, poor physical and chemical properties of the pipe, and influence on the drainage and sound-absorbing performance of the pipe, etc. problems, to achieve the effects of improving physical and chemical properties, reducing the drag coefficient of the water tongue, and stabilizing pressure fluctuations

Inactive Publication Date: 2017-02-22
上海白蝶管业科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although there are also internal spiral pipes on the market, the cross-sectional structure of the spiral ribs of the existing internal spiral pipes is a triangular structure, and its sound attenuation effect is poor; The height of the pipe and the distance of the pitch are not designed reasonably, which also greatly affects the drainage and sound-absorbing performance of the pipe
[0004] Furthermore, the material formula of the current internal spiral pipe is unreasonable, resulting in poor physical and chemical properties of the pipe

Method used

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  • PP (polypropylene) internal spiral pipe for drainage and preparation method of PP internal spiral pipe
  • PP (polypropylene) internal spiral pipe for drainage and preparation method of PP internal spiral pipe
  • PP (polypropylene) internal spiral pipe for drainage and preparation method of PP internal spiral pipe

Examples

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Effect test

Embodiment 1

[0027] A method for preparing a polypropylene internal spiral pipe for drainage, comprising the steps of:

[0028] Step 1), raw material mixing: mix the raw materials according to the weight ratio: 30 parts of polypropylene PP pellets, 50 parts of barium sulfate, 18 parts of montmorillonite, 2 parts of dispersant, put them in a high-speed mixer for high-temperature mixing, mix The temperature of the mixture is 120-150°C. After mixing for 30-40 minutes, the mixture is semi-gelled. At this time, the temperature of the mixture is as high as 120-125°C. Put the mixture into the cold mixer and continue mixing until it cools down to 40- Stop at 50°C;

[0029] Step 2), granulation: the material collected in step 1) is sent into a granulator for granulation to obtain pellets;

[0030] Step 3), pipe making: put the pellets obtained in step 2) into the barrel after cooling, the barrel has five temperature sections, the temperature at the inlet end of the barrel is 190-200°C, and the tem...

Embodiment 2

[0032] A method for preparing a polypropylene internal spiral pipe for drainage, comprising the steps of:

[0033] Step 1), raw material mixing: mix the raw materials according to the weight ratio: 25 parts of polypropylene PP pellets, 60 parts of barium sulfate, 13 parts of montmorillonite, 2 parts of dispersant, put them in a high-speed mixer for high-temperature mixing, mix The temperature of the mixture is 120-150°C. After mixing for 30-40 minutes, the mixture is semi-gelled. At this time, the temperature of the mixture is as high as 120-125°C. Put the mixture into the cold mixer and continue mixing until it cools down to 40- Stop at 50°C;

[0034] Step 2), granulation: the material collected in step 1) is sent into a granulator for granulation to obtain pellets;

[0035] Step 3), pipe making: put the pellets obtained in step 2) into the barrel after cooling, the barrel has five temperature sections, the temperature at the inlet end of the barrel is 190-200°C, and the tem...

Embodiment 3

[0037] A method for preparing a polypropylene internal spiral pipe for drainage, comprising the steps of:

[0038] Step 1), raw material mixing: mix the raw materials according to the weight ratio: 28 parts of polypropylene PP pellets, 55 parts of barium sulfate, 15 parts of montmorillonite, 2 parts of dispersant, put them in a high-speed mixer for high-temperature mixing, mix The temperature of the mixture is 120-150°C. After mixing for 30-40 minutes, the mixture is semi-gelled. At this time, the temperature of the mixture is as high as 120-125°C. Put the mixture into the cold mixer and continue mixing until it cools down to 40- Stop at 50°C;

[0039] Step 2), granulation: the material collected in step 1) is sent into a granulator for granulation to obtain pellets;

[0040] Step 3), pipe making: put the pellets obtained in step 2) into the barrel after cooling, the barrel has five temperature sections, the temperature at the inlet end of the barrel is 190-200°C, and the tempe...

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Abstract

The invention discloses a PP (polypropylene) internal spiral pipe for drainage. The PP internal spiral pipe comprises a pipe body made of a PP material, wherein the PP material is prepared from raw materials in parts by weight as follows: 25-30 parts of PP aggregates, 50-60 parts of barium sulfate, 13-18 parts of montmorillonite and 1-3 parts of a dispersing agent; a plurality of spiral ribs are arranged in the circumferential direction of the inner wall of the pipe body, a radial section structure of each spiral rib is a half-crescent structure with an arc top, an inner concave surface of the half-crescent structure and a spiral trend of the spiral rib are located in the same plane, two sides of the root part of the spiral rib are in circular arc transition connection with the inner wall of the pipe body, and a screw pitch of the spiral rib is 60-100 cm. According to the PP internal spiral pipe for drainage, water passing capacity is greatly enhanced, and water flow noise is greatly reduced. The invention further discloses a preparation method of the PP internal spiral pipe for drainage.

Description

technical field [0001] The invention relates to the field of drainage pipes, in particular to a polypropylene inner spiral pipe for drainage and a preparation method thereof. Background technique [0002] There are many types of drainage pipes on the market. For example, the Baidie 3S silent (PP) drainage pipe is a three-layer structure pipe. The inner and outer layers are made of environmentally friendly polypropylene PP material, and the middle core layer is made of special viscoelastic material. The middle layer of the three-layer structure mainly plays the role of sound insulation, shock absorption, and absorption of audible and sound waves; at the same time, materials of different densities are used to form a multi-layer reflective interface, which reflects sound waves inward and prevents sound waves from spreading out. Baidie brand 3S silent (PP) drainage pipe has been on the market for many years. According to customer feedback, the 3S silent (PP) drainage pipe has a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08K3/30C08K3/34F16L9/14F16L55/02
CPCC08K3/30C08K3/346C08K2003/3045C08L2203/18F16L9/14F16L55/02
Inventor 柴冈刘明华唐辉张雪华
Owner 上海白蝶管业科技股份有限公司
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