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Preparation method of flexible hose capable of resisting strong corrosion

A corrosion-resistant, hose-based technology, applied in the direction of hoses, pipes, mechanical equipment, etc., can solve problems such as pipeline safety hazards, and achieve the effects of firm bonding, overcoming poor bonding, and strong radiation resistance

Inactive Publication Date: 2017-11-17
邵素英
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] 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 lining film that is firmly bonded, has strong radiation resistance, and can transport LPG, LNG and strong corrosive chemical solvents. highly corrosive hose

Method used

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  • Preparation method of flexible hose capable of resisting strong corrosion
  • Preparation method of flexible hose capable of resisting strong corrosion
  • Preparation method of flexible hose capable of resisting strong corrosion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] A hose with strong corrosion resistance, comprising a rubber tube body, the rubber tube body sequentially includes an inner layer, an intermediate layer and a surface layer from the inside to the outside;

[0063] The inner layer is formed by vulcanizing and bonding the EPDM layer and the inner lining film;

[0064] The color of the EPDM rubber is milky white;

[0065] The inner lining film is mainly prepared from the following raw materials in parts by weight: 10 parts of LLDPE, 10 parts of polyvinyl alcohol, 20 parts of UHMWPE, 15 parts of polymer cross-linked polyethylene, 9 parts of polyimide, 7 parts of tetraethylpentamine Parts, 6 parts of α-sulfo fatty acid alkyl ester salt, 6 parts of epoxy resin, 5 parts of SBR latex, 4 parts of rosin;

[0066] 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 0.42 mm.

[0067] The middle layer is made of EPDM rubber, EPDM cord...

Embodiment 2

[0088] A hose with strong corrosion resistance, comprising a rubber tube body, the rubber tube body sequentially includes an inner layer, an intermediate layer and a surface layer from the inside to the outside;

[0089] The inner layer is formed by vulcanizing and bonding the EPDM layer and the inner lining film;

[0090] The color of the EPDM rubber is milky white;

[0091] The inner lining film is mainly prepared from the following raw materials in parts by weight: 5 parts of LLDPE, 5 parts of polyvinyl alcohol, 15 parts of UHMWPE, 10 parts of polymer cross-linked polyethylene, 8 parts of polyimide, 5 parts of tetraethylpentamine 5 parts, 5 parts of α-sulfo fatty acid alkyl ester salt, 5 parts of epoxy resin, 4 parts of SBR latex, 3 parts of rosin;

[0092] 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 0.35mm.

[0093] The middle layer is made of EPDM rubber, EPDM cord,...

Embodiment 3

[0114] A hose with strong corrosion resistance, comprising a rubber tube body, the rubber tube body sequentially includes an inner layer, an intermediate layer and a surface layer from the inside to the outside;

[0115] The inner layer is formed by vulcanizing and bonding the EPDM layer and the inner lining film;

[0116] The color of the EPDM rubber is milky white;

[0117] The inner lining film is mainly prepared from the following raw materials in parts by weight: 15 parts of LLDPE, 15 parts of polyvinyl alcohol, 25 parts of UHMWPE, 20 parts of polymer cross-linked polyethylene, 10 parts of polyimide, 8 parts of tetraethylpentamine 7 parts, 7 parts of α-sulfo fatty acid alkyl ester salt, 7 parts of epoxy resin, 6 parts of SBR latex, 5 parts of rosin;

[0118] 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 0.5 mm.

[0119] The middle layer is made of EPDM rubber, EPDM co...

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Abstract

The invention discloses a preparation method of a flexible hose capable of resisting strong corrosion. Low-density polyethylene, ultra-high molecular weight polyethylene and high-molecular cross-linked polyethylene are taken as raw materials, after scientific compound is conducted and a rubber hose is vulcanized, a lining film is prepared from chemical substances with an excellent adhesive property, meanwhile corona treatment is conducted on the adhesive surface of the lining film and the adhesive surface of the rubber hose, glass steel reinforced fiber with a radiation-proof property is recombined on a surface layer, so that the surface layer of the rubber hose has an excellent radiation-proof property, the potential safety hazards brought by ionizing radiation to a conveying pipeline are avoided, and finally the flexible hose capable of resisting the strong corrosion is prepared, wherein the flexible hose is firm in lining film adhesion and high in radiation-proof property and can convey LPG, LNG and chemical solvents with strong corrosion; and the absorptivity of the flexible hose to X ray, gamma ray and various neutrons in nuclear radiation can reach up to 97.5-99.5%, and the adhesive force (N / 25 mm) of the lining film and a rubber layer reaches to 160-180.

Description

[0001] The invention name of the present invention is: a preparation method of a strong corrosion-resistant hose, the application number of the parent application is: 201510586252.1, the application date is: 2015.09.15, the invention name: a strong corrosion-resistant hose and its preparation method. technical field [0002] The invention relates to the preparation of hoses, in particular to a preparation method of a highly corrosion-resistant hose. Background technique [0003] 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, automobile...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L11/04F16L11/118F16L58/10C08L23/06C08L23/08C08L29/04C08L79/08C08L63/00C08L9/08C08L93/04C08K5/17C08K5/42
CPCC08L23/06C08L2203/18C08L2205/025C08L2205/035C08L2207/068F16L11/04F16L11/118F16L58/10C08L23/0815C08L29/04C08L79/08C08L63/00C08L9/08C08L93/04C08K5/17C08K5/42
Inventor 邵素英
Owner 邵素英