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Hose for delivering liquefied natural gas and preparation method thereof

A technology for liquefied natural gas and hoses, applied in the direction of hoses, pipes, mechanical equipment, etc., can solve problems such as potential safety hazards, and achieve good wear resistance and excellent bonding performance

Inactive Publication Date: 2015-12-16
邵素英
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem solved by the present invention is to overcome the defects of the existing corrosion-resistant rubber tubes, using low-density polyethylene (LLDPE), ultra-high molecular weight polyethylene (UHMWPE) and polymer cross-linked polyethylene as the main raw materials, scientifically compounding and After vulcanization of the rubber tube, the lining film is prepared from chemical substances such as polyimide, tetraethylpentamine, α-sulfo fatty acid alkyl ester salt, epoxy resin, SBR latex, rosin, etc., which have excellent bonding properties. Corona treatment is carried out on the bonding surface of the inner lining film and the bonding surface of the rubber tube to enhance its cohesiveness, and the surface layer is compounded with fiberglass reinforced fiber with radiation-proof performance, so that the surface layer of the rubber tube has excellent anti-corrosion properties. Radiation, especially to solve the potential safety hazards caused by ionizing radiation for pipelines transporting oil and natural gas, and finally prepare a hose with a firm lining film, strong radiation resistance, and can transport liquefied natural gas

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] A hose for transporting liquefied natural gas, comprising a rubber hose body, the rubber hose body sequentially includes an inner layer, an intermediate layer and a surface layer from the inside to the outside;

[0062] The inner layer is formed by vulcanizing and bonding the EPDM layer and the inner lining film;

[0063] The color of the EPDM rubber is milky white;

[0064] The inner lining film is mainly prepared from the following raw materials in parts by weight: 30 parts of LLDPE, 25 parts of polyvinyl alcohol, 10 parts of UHMWPE, 5 parts of polymer cross-linked polyethylene, 9 parts of polyimide, and 7 parts of tetraethylpentamine , 6 parts of α-sulfo fatty acid alkyl ester salt, 6 parts of epoxy resin, 5 parts of SBR latex, 4 parts of rosin;

[0065] The lining film is blown and stretched to form a film after extruding raw materials by a conventional method, and the thickness of the lining film is 0.42mm.

[0066] The middle layer is made of EPDM rubber, EPDM c...

Embodiment 2

[0087] A hose for transporting liquefied natural gas, comprising a rubber hose body, the rubber hose body sequentially includes an inner layer, an intermediate layer and a surface layer from the inside to the outside;

[0088] The inner layer is formed by vulcanizing and bonding the EPDM layer and the inner lining film;

[0089] The color of the EPDM rubber is milky white;

[0090] The inner lining film is mainly prepared from the following raw materials in parts by weight: 20 parts of LLDPE, 20 parts of polyvinyl alcohol, 5 parts of UHMWPE, 3 parts of polymer cross-linked polyethylene, 8 parts of polyimide, and 5 parts of tetraethylpentamine , 5 parts of α-sulfo fatty acid alkyl ester salt, 5 parts of epoxy resin, 4 parts of SBR latex, 3 parts of rosin;

[0091] The lining film is blown and stretched to form a film after extruding raw materials by a conventional method, and the thickness of the lining film is 0.35 mm.

[0092] The middle layer is made of EPDM rubber, EPDM c...

Embodiment 3

[0113] A hose for transporting liquefied natural gas, comprising a rubber hose body, the rubber hose body sequentially includes an inner layer, an intermediate layer and a surface layer from the inside to the outside;

[0114] The inner layer is formed by vulcanizing and bonding the EPDM layer and the inner lining film;

[0115] The color of the EPDM rubber is milky white;

[0116] The inner lining film is mainly prepared from the following raw materials in parts by weight: 40 parts of LLDPE, 30 parts of polyvinyl alcohol, 13 parts of UHMWPE, 8 parts of polymer cross-linked polyethylene, 10 parts of polyimide, and 8 parts of tetraethylpentamine , 7 parts of α-sulfo fatty acid alkyl ester salt, 7 parts of epoxy resin, 6 parts of SBR latex, 5 parts of rosin;

[0117] The lining film is blown and stretched to form a film after extruding raw materials by a conventional method, and the thickness of the lining film is 0.5mm.

[0118] The middle layer is made of EPDM rubber, EPDM c...

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Abstract

The invention discloses a hose for delivering liquefied natural gas and a preparation method thereof. The low-density polyethylene, ultra-high molecular weight polyethylene and high-polymer crosslinked polyethylene used as raw materials are scientifically compounded and vulcanized with a rubber tube to prepare a liner film with chemical substances with favorable bonding properties; and the liner film bonding surface and the rubber tube bonding surface are subjected to corona treatment, and radiation-resistant fiberglass-reinforced plastic reinforced fibers are compounded on the surface layer, so that the rubber tube surface layer has excellent radiation resistance, thereby solving the potential safety hazard of the transmission pipeline caused by ionizing radiation, and finally preparing the hose capable of delivering liquefied natural gas, of which the liner film has high bonding firmness and high radiation resistance. The absorptivity for X rays, gamma rays and various neutrons in nuclear radiation can be up to 97.5-99.5%, and the adhesive force between the liner film and rubber layer (N / 25mm) is up to 160-180.

Description

technical field [0001] The invention relates to the preparation of hoses, in particular to hoses for transporting liquefied natural gas and a preparation method thereof. Background technique [0002] After more than 50 years of development, my country's rubber hose belt industry has played an indispensable supporting role in the national economy. Especially with the improvement of my country's mechanization level and the application of new materials, the rubber hose belt industry has continuously penetrated into related fields. The application range and fields of rubber hose belts have been opened up, and the products are widely used in coal, metallurgy, cement, ports, mines, petroleum, automobiles, textiles, light industry, engineering machinery, construction, marine, agriculture, aviation, aerospace and other fields. In recent years, the rubber hose and belt industry has adhered to the scientific development concept, and the product varieties, specifications, and quality ha...

Claims

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Application Information

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IPC IPC(8): F16L11/08C08L23/08C08L29/04C08L23/06C08L79/08C08L63/00C08L9/08C08L93/04C08K5/17C08K5/42
CPCF16L11/08C08K5/17C08K5/42C08L9/08C08L23/06C08L23/08C08L29/04C08L63/00C08L79/08C08L93/04
Inventor 邵素英
Owner 邵素英
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