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Temperature-resistant anti-freezing PP pipe and preparation process thereof

A preparation process and temperature-resistant technology, applied in thermal insulation, pipeline protection, tubular objects, etc., can solve the problems of poor low-temperature impact resistance of PP pipes, easy embrittlement of PP pipes, and easy cracking of PP pipes, so as to improve corrosion resistance non-polluting environment and widening the operating temperature range

Inactive Publication Date: 2020-01-10
RONGCHENG PIPE IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the poor low-temperature impact resistance of PP pipes, PP pipes are prone to embrittlement under low-temperature environmental conditions, so the use of PP pipes is still restricted, especially in the north, where PP pipes with low winter temperatures are very easy to freeze and crack

Method used

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  • Temperature-resistant anti-freezing PP pipe and preparation process thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0029] This embodiment provides a temperature-resistant and antifreeze PP pipe, which includes a pipe body, the pipe body includes a PP layer as the main body, the inner and outer sides of the PP layer are provided with a heat-resistant layer, and the inner heat-resistant layer of the PP layer A corrosion-resistant layer is provided inside, and an antifreeze layer, an insulating layer and a protective layer are provided on the outside of the temperature-resistant layer outside the PP layer in sequence. The thickness of the temperature-resistant antifreeze PP pipe body is 20mm, of which the thickness of the PP layer is 10mm, the thickness of the two temperature-resistant layers is 1mm, the thickness of the corrosion-resistant layer is 0.5mm, the thickness of the antifreeze layer is 3.5mm, and the thickness of the insulation layer and the protective layer are respectively thick. 1mm.

[0030] In this embodiment, the PP layer comprises the following components by weight: 100 part...

Embodiment 2

[0033] This example provides a method for preparing the temperature-resistant and antifreeze PP pipe described in Example 1, which includes the following steps:

[0034]1) Preparation of raw materials: 100 parts by weight of PP, 10 parts of PP-R, 2 parts of calcium stearate and triphenyl phosphite, 2 parts of maleic anhydride grafted polyethylene, 1 part of nano zirconium dioxide, 1 part of oxidant 1010, 0.5 part of modified masterbatch with β-nucleating agent on the surface are used as raw materials for the preparation of PP layer; 10 parts of polyethylene, 5 parts of polyvinyl chloride, 5 parts of zirconia, and 5 parts of barium oxide are taken in parts by weight , 1.2 parts of boric acid, 20 parts of aluminum oxide, 5 parts of antimony trioxide, 10 parts of silicon micropowder, 10 parts of titanium dioxide, and 0.5 part of triethylenediamine are used as the raw materials for the preparation of the temperature-resistant layer; 28 parts of epoxy resin are taken in parts by wei...

Embodiment 3

[0042] This example is also a method for preparing the temperature-resistant and antifreeze PP pipe described in Example 1,

[0043] The raw materials for preparing the PP layer include by weight: 100 parts of PP, 10 parts of PP-R, 5 parts of calcium stearate and triphenyl phosphite, 3 parts of maleic anhydride grafted polyethylene, and 3 parts of nano zirconium dioxide , 2 parts of antioxidant 1010, 2 parts of modified color masterbatch with β-nucleating agent loaded on the surface. The raw materials for preparing the temperature-resistant layer include by weight: 10 parts of polyethylene, 5 parts of polyvinyl chloride, 5 parts of zirconia, 5 parts of barium oxide, 1.2 parts of boric acid, 20 parts of aluminum oxide, 5 parts of antimony trioxide, 10 parts of silicon micropowder, 10 parts of titanium dioxide, and 0.5 parts of triethylenediamine. The raw materials for preparing the corrosion-resistant layer include by weight: 28 parts of epoxy resin, 10 parts of ZIF-67 nanomet...

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Abstract

The invention disclsoes a pipe body, and specifically disclosed a temperature-resistant anti-freezing PP pipe and a preparation process thereof. The temperature-resistant anti-freezing PP pipe comprises a PP layer serving as a main body, temperature-resistant layers are arranged on the inner side and the outer side of the PP layer, a corrosion-resistant layer is arranged on the inside of the temperature-resistant layer on the inner side of the PP layer, and an anti-freezing layer, a heat preservation layer and a protective layer are sequentially arranged on the outside of the temperature-resistant layer on the outer side of the PP layer. The temperature-resistant layers arranged on the inner side and the outer side of the PP layer are capable of cutting off and slowing down temperature transmission to a certain extent; the anti-freezing layer is prepared taking homo-polypropylene and polyamide as raw materials, and has good high temperature resistance and corrosion resistance, so thatthe performance of the PP pipe is improved, and the cold resistance and freezing resistance of the PP pipe are improved greatly; the heat preservation layer and the protective layer are capable of stopping external heat transfer and protecting the PP pipe at the same time, and widening the using temperature range further; the internally coated corrosion-resistant layer is capable of improving tubular material corrosion resistance greatly, and prolonging service life; the materials of the layers of the PP pipe are nontoxic environment-friendly materials, and no pollution on the environment is caused.

Description

technical field [0001] The invention relates to a temperature-resistant and antifreeze PP pipe and a preparation process thereof. [0002] technical background [0003] PP pipe is the abbreviation of polypropylene (Polypropylene) pipe. It is a semi-crystalline thermoplastic pipe, non-toxic, hygienic, and has the advantages of no rust, wear resistance, no scaling, and long service life. It is mainly used in cold storage. Hot water supply system or heating system, the existing PP pipe temperature range is -20°C to 70°C, PP pipes will freeze cracks at low temperatures below -20°C, and PP pipes will be cracked at high temperatures above 70°C. break down. Related to PP pipes are FRPP pipes (glass fiber reinforced polypropylene pipes), PP-R pipes (three-type polypropylene pipes), PPH pipes (homopolypropylene pipes), etc. FRPP pipes are mainly suitable for the transportation of corrosive liquids; PPH pipes are widely used in heating systems; the Vicat softening temperature of PP-R...

Claims

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Application Information

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IPC IPC(8): B32B1/08B32B27/08B32B27/32B32B27/30B32B27/34B32B27/06B32B9/00B32B9/04B32B27/12B32B5/18B32B33/00F16L59/02F16L58/10C08L23/12C08L51/06C08K5/098C08K5/526C08K3/22C08K13/02C08L23/06C08L27/06C08K3/36C08K3/38C08L63/00C08L87/00C08L77/00C08L83/04C08L23/08
CPCB32B1/08B32B27/08B32B27/32B32B27/304B32B27/34B32B27/306B32B27/065B32B9/045B32B5/02B32B27/12B32B5/18B32B33/00F16L59/028F16L58/1027C08L23/12C08L23/06C08L63/00C08K2003/2244C08K2201/011C08K2003/2227C08L2203/18B32B2262/10B32B2262/105B32B2266/126B32B2255/10B32B2255/26B32B2307/306B32B2307/714B32B2307/558B32B2307/304B32B2597/00
Inventor 虞敏朱加荣
Owner RONGCHENG PIPE IND
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