Ultra-low temperature high-density polyethylene anticorrosion material for steel pipeline and preparation method thereof

A technology of high-density polyethylene and anti-corrosion materials, which is applied in the field of protective materials, can solve problems that cannot meet the use and construction requirements of ultra-low temperature, and achieve improved fluidity and blend compatibility, excellent impact resistance, and improved processing performance effect

Active Publication Date: 2021-04-13
QINGDAO WEDONK POLYMER MATERIAL +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the deficiencies of the prior art, the present invention provides an ultra-low temperature high-density polyethylene anti-corrosion material for steel pipelines and its preparation method, which solves the problem that the existing high-density polyethylene anti-corrosion material cannot meet the use and construction requirements of ultra-low temperature

Method used

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Comparison scheme
Effect test

Embodiment 1

[0019] Preferred Embodiment 1 of the present invention provides an ultra-low temperature high-density polyethylene anticorrosion material for steel pipelines, which is made of the following raw material components in parts by weight: 80 parts of high-density polyethylene, 30 parts of polypropylene, and 7 parts of linear low-density polyethylene 2 parts, 2 parts of maleic anhydride grafted polyethylene, 4 parts of nano calcium carbonate, 2 parts of titanate coupling agent, 3 parts of pentaerythritol stearate, 2 parts of antioxidant.

[0020] Wherein, the high-density polyethylene is PE100 grade high-density polyethylene; the polypropylene is PPB4228; the antioxidant is antioxidant 1010; the titanate coupling agent is titanate coupling agent NDZ -401, Nanjing Shuguang Chemical Factory.

Embodiment 2

[0022] Preferred Embodiment 2 of the present invention provides an ultra-low temperature high-density polyethylene anticorrosion material for steel pipelines, which is made of the following raw material components in parts by weight: 85 parts of high-density polyethylene, 35 parts of polypropylene, and 7.5 parts of linear low-density polyethylene 2.2 parts of maleic anhydride grafted polyethylene, 4.6 parts of nano-calcium carbonate, 2.1 parts of titanate coupling agent, 3.3 parts of pentaerythritol stearate, and 2.1 parts of antioxidant.

[0023] Wherein, the high-density polyethylene is PE100 grade high-density polyethylene; the polypropylene is PPB4220; the antioxidant is antioxidant 1010; the titanate coupling agent is titanate coupling agent NDZ -401, Nanjing Shuguang Chemical Factory.

Embodiment 3

[0025] Preferred embodiment 3 of the present invention provides an ultra-low temperature high-density polyethylene anticorrosion material for steel pipelines, which is made of the following raw material components in parts by weight: 91 parts of high-density polyethylene, 33 parts of polypropylene, and 9 parts of linear low-density polyethylene 2.3 parts of maleic anhydride grafted polyethylene, 5.4 parts of nano-calcium carbonate, 2.4 parts of titanate coupling agent, 3.5 parts of pentaerythritol stearate, and 2.2 parts of antioxidant.

[0026] Wherein, the high-density polyethylene is PE100 grade high-density polyethylene; the polypropylene is PPB240; the antioxidant is antioxidant 1010; the titanate coupling agent is titanate coupling agent NDZ -401, Nanjing Shuguang Chemical Factory.

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Abstract

The invention provides an ultra-low temperature high-density polyethylene anti-corrosion material for steel pipes, which is prepared from the following raw material components in parts by weight: 80-100 parts of high-density polyethylene, 30-50 parts of polypropylene, and linear low-density polyethylene. 7~11 parts, maleic anhydride grafted polyethylene 2~3 parts, nano calcium carbonate 4~7 parts, titanate coupling agent 2-3 parts, pentaerythritol stearate 3~4 parts, antioxidant 2 ~3 servings. The invention also provides a preparation method of the ultra-low temperature high-density polyethylene anti-corrosion material for steel pipes. The invention solves the problem that the existing high-density polyethylene anti-corrosion material cannot meet the requirements of ultra-low temperature use and construction, and the prepared product has good low-temperature cracking resistance.

Description

technical field [0001] The invention relates to the technical field of protective materials, in particular to an ultra-low temperature high-density polyethylene anti-corrosion material for steel pipelines and a preparation method thereof. Background technique [0002] The extruded polyethylene anti-corrosion layer is an anti-corrosion layer formed by heating and pressurizing the polyethylene in the extruder to continuously pass through the extrusion die to form and coat the pipe in a flowing state. The coating methods include longitudinal extrusion coating and Side wrap. [0003] With the construction of oil and gas pipelines in my country for nearly two decades, the high-density polyethylene anti-corrosion materials for steel pipelines have changed from the ministry standard to GB23257-2009, and then to GB23257-2017. The current standards can only meet the requirements of the general geographical environment. It is no longer suitable for the construction of my country-Russi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/06C08L23/12C08L23/08C08L51/06C08K13/02C08K3/26C08K5/103C08K5/134
CPCC08K2003/265C08K2201/011C08L23/06C08L2203/18C08L2205/035C08L2207/062C08L23/12C08L23/0815C08L51/06C08K13/02C08K3/26C08K5/103C08K5/1345
Inventor 宋钦兰陈百铭丁玉梅宋艳艳
Owner QINGDAO WEDONK POLYMER MATERIAL
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