Steel pipeline anticorrosive material and preparation method of steel pipeline anticorrosive material

A technology for anti-corrosion materials and pipes, applied in anti-corrosion coatings, coatings, etc., can solve problems such as poor low-temperature toughness, insufficient use, and hard-to-find base materials, etc., achieve high-temperature indentation hardness, high impact toughness, and ensure production capacity Effect

Active Publication Date: 2013-01-02
四川仁智新材料科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Patent CN101717544 proposes a black polypropylene anticorrosion material. The patent uses polypropylene with a large molecular weight and general polypropylene as the base material to ensure the mechanical properties of the product, especially the black polypropylene anticorrosion material with high Vicat and high hardness. The patent has the following defects: the base material of the patented product is hard to find, the general high molecular weight poly

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0031] Example 1

[0032] In this embodiment, we adopt the following steps to make:

[0033] 3 parts of high-density polyethylene refined to more than 200 mesh, 26 parts of PPB4228, 25 parts of EPS30R, 2.4 parts of titanium dioxide, 1.2 parts of antioxidants, 1.2 parts of lubricants, 0.6 parts of styrene, 0.6 parts of diisoperoxide After the propylbenzene is uniformly mixed in a high-speed mixer, it is extruded, stretched, air-cooled, and pelletized by a reactive twin-screw extruder with a length-to-diameter ratio of 52:1. per minute, the steel pipeline anti-corrosion material with high Vicat, high hardness and good low temperature toughness can be obtained. 48 kJ / ㎡.

Example Embodiment

[0034] Example 2

[0035] In this embodiment, we adopt the following steps to make:

[0036] 6 parts of high-density polyethylene refined to more than 200 mesh, 50 parts of PPB8101, 2.2 parts of carbon black, 1.0 part of antioxidant, 0.3 part of lubricant, 0.4 part of 2,6-di-tert-butyl-4-cresol, After 0.5 part of benzoyl peroxide was uniformly mixed in a high-speed mixer, it was extruded, stretched, air-cooled, and pelletized by a reactive twin-screw extruder with a length-to-diameter ratio of 52:1, and the temperature was set at 180°C. When the rotation speed is set to 180 rpm, the steel pipeline anti-corrosion material with high Vicat, high hardness and good low temperature toughness can be obtained. mm, low temperature impact strength 50 kJ / ㎡.

Example Embodiment

[0037] Example 3

[0038] In this embodiment, we adopt the following steps to make:

[0039] 8 parts of high-density polyethylene refined to more than 200 mesh, 48 parts of PPK8303, 1.8 parts of carbon black masterbatch, 0.6 parts of antioxidants, 0.6 parts of lubricants, 0.2 parts of turpentine, 0.4 parts of di-tert-butyl peroxide After mixing evenly in a high-speed mixer, it was extruded, stretched, air-cooled, and pelletized by a reactive twin-screw extruder with a length-to-diameter ratio of 52:1. The temperature was set at 220°C and the rotational speed was set at 280 rpm. , the steel pipeline anti-corrosion material of the present invention with high Vicat, high hardness and good low temperature toughness can be obtained, the Vicat indentation hardness at 155°C and 23°C is 0.02 mm, the indentation hardness at 90°C is 0.11 mm, and the low temperature impact strength is 52 kJ / ㎡.

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Abstract

The invention discloses a steel pipeline anticorrosive material and a preparation method of the steel pipeline anticorrosive material. The steel pipeline anticorrosive material comprises the following ingredients in proportion by weight: 44 to 54 parts of polypropylene, 3 to 12 parts of high-density polyethylene powder, 0.3 to 2.4 parts of anti-aging agents, 0.06 to 1.2 parts of antioxidant, 0.06 to 1.2 parts of lubricating agents, 0.06 to 0.6 parts of degradation inhibitors and 0.06 to 0.6 parts of initiators, wherein all ingredients are uniformly mixed in a highly mixed pot and are then extruded out through a reactive double-screw-rod extruding machine with the length-diameter ratio being 52:1, the extruded ingredients are subjected to strip pulling, air cooling and grain cutting, the temperature is set to be 180 DEG C to 220 DEG C, and the rotation speed of screw rods is set to be 180 to 400 turns per minute. Compared with the anticorrosive material in the market, the steel pipeline anticorrosive material has the advantages that the processing applicability is wide, high Vicat, high hardness and good low-temperature toughness are realized, and long service life at high temperature and requirements on the anticorrosive material when passing through specific districts such as water, sand and stone soil and oceans are met.

Description

technical field [0001] The invention relates to an anticorrosion material, in particular to an anticorrosion material for oil and gas field pipelines and a preparation method of the material. Background technique [0002] At present, my country's oil and gas field pipeline anticorrosion mainly adopts three-layer structure polyethylene anticorrosion, but it is used in high temperature medium pipeline anticorrosion, pipeline anticorrosion near pressurization stations, pipeline anticorrosion underground, high surface temperature, and desert areas with long sunshine hours The pipeline anti-corrosion is not satisfied by the current three-layer structure polyethylene anti-corrosion. Polypropylene has a long service life at high temperature. It can run naked at 80°C for 30 years and can withstand a high temperature of 100°C, while polyethylene softens when it exceeds 80°C and loses its use value; polypropylene has a high Vicat The softening point is above -145°C, and the surface sc...

Claims

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Application Information

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IPC IPC(8): C09D123/14C09D123/06C09D7/12C09D5/08F16L58/10B29B9/06B29C47/92B29C48/92
CPCB29C48/0022B29C48/40B29C48/625B29C48/92B29C2948/9259B29C2948/92704B29C2948/92885B29C2948/92895
Inventor 徐正华陈波郭林王曦侯富强
Owner 四川仁智新材料科技有限责任公司
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