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Hose preparation method

A hose and rubber tube technology, applied in the field of rubber tubes, can solve problems such as hidden dangers of pipeline safety, and achieve the effects of firm bonding, overcoming poor adhesion, and excellent radiation protection.

Inactive Publication Date: 2018-01-16
BEIJING KEHUITONG WISDOM SCI & TECH CO LTD
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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 soft lining film with firm bonding, strong radiation resistance, and the ability to transport LPG, LNG and strong corrosive chemical solvents. Tube

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] A hose includes a rubber tube body, which includes an inner layer, an intermediate layer, and a surface layer in order from the inside to the outside;

[0062] The inner layer is formed by bonding an EPDM rubber layer and an inner lining film through vulcanization;

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

[0064] The lining film is mainly prepared from the following parts by weight: 30 parts of LLDPE, 25 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, 8 parts of SBR latex, 7 parts of rosin;

[0065] The lining film adopts a conventional method to extrude the raw materials and then blow molding and stretching into a film, and the thickness of the lining film is 0.42 mm.

[0066] The intermediate layer is formed by vulcanizing and bonding EPDM rubber, EPDM cord, polypropylene reinforced comp...

Embodiment 2

[0087] A hose includes a rubber tube body, which includes an inner layer, an intermediate layer, and a surface layer in order from the inside to the outside;

[0088] The inner layer is formed by bonding an EPDM rubber layer and an inner lining film through vulcanization;

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

[0090] The lining film is mainly prepared from the following parts by weight: 20 parts of LLDPE, 20 parts of polyvinyl alcohol, 15 parts of UHMWPE, 10 parts of polymer cross-linked polyethylene, 8 parts of polyimide, and 5 parts of tetraethylpentamine. Parts, 5 parts of α-sulfo fatty acid alkyl ester salt, 5 parts of epoxy resin, 7 parts of SBR latex, 6 parts of rosin;

[0091] The lining film adopts conventional methods to extrude the raw materials and then blow molding and stretching into a film, and the thickness of the lining film is 0.35 mm.

[0092] The intermediate layer is made of vulcanized bonding of EPDM rubber and EPDM cord, polypropylene reinforced c...

Embodiment 3

[0113] A hose includes a rubber tube body, which includes an inner layer, an intermediate layer, and a surface layer in order from the inside to the outside;

[0114] The inner layer is formed by bonding an EPDM rubber layer and an inner lining film through vulcanization;

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

[0116] The lining film is mainly prepared from the following raw materials in parts by weight: 40 parts of LLDPE, 30 parts of polyvinyl alcohol, 25 parts of UHMWPE, 20 parts of polymer cross-linked polyethylene, 10 parts of polyimide, 8 parts of tetraethylpentamine Parts, 7 parts of α-sulfo fatty acid alkyl ester salt, 7 parts of epoxy resin, 9 parts of SBR latex, 8 parts of rosin;

[0117] The lining film adopts a conventional method to extrude the raw materials and then blow molding and stretching into a film, and the thickness of the lining film is 0.5 mm.

[0118] The intermediate layer is made of vulcanized bonding of EPDM rubber and EPDM cord, polypropylene...

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Abstract

The invention discloses a hose preparation method. Low-density polyethylene, ultra-high molecular weight polyethylene and polymer-crosslinked polyethylene are taken as raw materials; a chemical substance having excellent adhesion properties after scientific compound and rubber tube vulcanization is utilized to prepare a lining film, corona treatment is performed on the bonding surface of the lining film and the bonding surface of the rubber tube, a surface layer is compounded with fiberglass reinforced fibers having radiation-proof properties, so that the rubber tube surface layer has excellent anti-radiation properties, potential safety hazards caused by ionizing radiation of a conveying pipe are solved, and finally the hose which has the lining film firmly bonded, is high in anti-radiation and can convey LPG, LNG and highly corrosive chemical solvents is prepared. The rate of absorption of X-rays, gamma-rays and various neutrons in nuclear radiation is up to 97.5-99.5%, and the adhesive force (N / 25 mm) of the lining film and a rubber layer reaches 160-180.

Description

[0001] The title of the invention is: a method for preparing a hose, the application number of the parent application is: 201510590822.4, and the date of application is: 2015.09.16, the title of the invention: a hose and a method for preparing the same. Technical field [0002] The invention relates to a rubber tube, in particular to a method for preparing a hose. Background technique [0003] After more than 50 years of development, the rubber tube belt industry in my country 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 tube belt industry continues to infiltrate with related fields. The application range and fields of rubber hose belts have been developed. Products are widely used in coal, metallurgy, cement, ports, mining, petroleum, automobiles, textiles, light industry, engineering machinery, construction, marine, agriculture, aviation, aer...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L11/08C08L23/08C08L29/04C08L23/06C08L79/08C08L63/00C08L9/08C08L93/04C08L23/16C08L67/06C08L23/12C08K5/17C08K5/42C08K3/08C08K3/38C08J7/00B29C69/02B29C70/34B29C59/10B29L23/00
CPCC08L23/0815C08L67/06C08L2203/16C08L2203/18C08L2205/035C08L2207/068F16L11/08C08L29/04C08L23/06C08L2023/44C08L79/08C08L63/00C08L9/08C08L93/04C08K5/42C08L71/02C08K7/04C08K3/08C08K3/38
Inventor 李绩
Owner BEIJING KEHUITONG WISDOM SCI & TECH CO LTD
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