Protective material for joint coating of outer erosion resistant layer of pipeline

A technology of protective materials and anti-corrosion layers, which is applied in the field of pipeline systems, can solve problems that affect the progress of crossing construction, the time of protective treatment should not be too long, and affect the progress of construction, etc.

Active Publication Date: 2015-04-08
PIPECHINA SOUTH CHINA CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The on-site construction characteristics of crossing pipelines determine that the time for protective treatment of joints should not be too long, otherwise it will greatly affect the progress of crossing construction
If the commonly used protective layer of epoxy-based composite material is used as the protective material at the joint, its curing cycle is generally 15-48h, which will seriously affect the overall construction progress of the crossing

Method used

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  • Protective material for joint coating of outer erosion resistant layer of pipeline

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Effect test

Embodiment 1

[0052] This embodiment provides a protective material for sealing the outer anticorrosion layer of a pipeline, which includes a protective layer covering the outside of the pipeline and a putty system at both ends of the protective layer. The protective layer includes a resin system and a fiber reinforcement. The resin system includes the following components in mass percent: E51 epoxy resin 55%, polyetheramine D2000 10%, polythiol 30%, 2,4,6-tris(dimethylaminomethyl)phenol accelerator 2 %, polypropylene oxide butyl ether reactive diluent 3%. The fiber reinforcement is 200g / m 2UHMWPE fiber unidirectional cloth. The putty system includes the following components in mass percent: E51 epoxy resin 45%, polyetheramine D2000 15%, polythiol 20%, 2,4,6-tris(dimethylaminomethyl)phenol accelerator 1%, polypropylene oxide butyl ether reactive diluent 3%; silane coupling agent KH550 1%; toughening agent CYH-277 5%; glass microspheres 10%.

Embodiment 2

[0054] This embodiment provides a protective material for sealing the outer anticorrosion layer of a pipeline, which includes a protective layer covering the outside of the pipeline and a putty system at both ends of the protective layer. The protective layer includes a resin system and a fiber reinforcement. The resin system includes the following components in mass percent: E51 epoxy resin 57%, polyetheramine D2000 13%, polythiol 25%, 2,4,6-tris(dimethylaminomethyl)phenol accelerator 1%, Polypropylene oxide butyl ether reactive diluent 4%. The fiber reinforcement is 200g / m 2 Fiberglass satin. The putty system includes the following components in mass percent: E51 epoxy resin 48%, polyetheramine D2000 12%, polythiol 15%, 2,4,6-tris(dimethylaminomethyl)phenol accelerator 2%, polypropylene oxide butyl ether reactive diluent 5%; silane coupling agent KH550 2%; toughening agent CYH-277 2%; glass microspheres 14%.

Embodiment 3

[0056] This embodiment provides a protective material for sealing the outer anticorrosion layer of a pipeline, which includes a protective layer covering the outside of the pipeline and a putty system at both ends of the protective layer. The protective layer includes a resin system and a fiber reinforcement. The resin system includes the following components in mass percent: E51 epoxy resin 60%, polyetheramine D2000 12%, polythiol 20%, 2,4,6-tris(dimethylaminomethyl)phenol accelerator 1%, polypropylene oxide butyl ether reactive diluent 7%. The fiber reinforcement is 200g / m 2 Basalt fiber non-woven fabric. The putty system includes the following components in mass percent: E51 epoxy resin 50%, polyetheramine D2000 10%, polythiol 15%, 2,4,6-tris(dimethylaminomethyl)phenol accelerator 1%, polypropylene oxide butyl ether reactive diluent 3%; silane coupling agent KH550 1%; toughening agent CYH-277 2%; glass microspheres 18%.

[0057] The specific preparation and construction ...

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Abstract

The invention relates to a protective material for joint coating of an outer erosion resistant layer of a pipeline. The protective material comprises a protective layer which covers the outer side of the pipeline and putty systems which are arranged at the two ends of the protective layer; the protective layer comprises a resin system and a fiber reinforcement body; the resin system comprises E51 epoxy resins, 2,4,6-tri(dimethylamino methyl) phenol accelerants, polyether amine D2000, polymercaptans and polymer epoxy propane butyl ether reactive diluents; the fiber reinforcement body is ultra high molecular weight polyethylene fiber, a carbon fiber, a glass fiber, a basalt fiber and a fabric made by the fibers; the fabric is non-woven cloth, plain cloth, twills and satin weave cloth; the putty systems comprise E51 epoxy resins, 2,4,6-tri(dimethylamino methyl) phenol accelerants, polyether amine D2000, polymercaptans, polymer epoxy propane butyl ether reactive diluents, silane coupling agents, flexibilizers and glass beads. The protective material has the characteristics of short curing time, high scratch resistance, high anti-bending strength and high impact strength and is convenient for construction.

Description

technical field [0001] The invention relates to the technical field of pipeline systems, in particular to a protective material for filling joints of external anticorrosion layers of pipelines. Background technique [0002] The directional drilling and crossing technology of long-distance pipelines has the characteristics of short construction period and little environmental disturbance. It is suitable for the laying of buried pipelines in railways, highways, rivers and other areas. It is an efficient trenchless buried pipeline laying technology. Widely used in long-distance pipeline construction. The directional drilling crossing construction will not affect the normal life and work order of the crossing section, and solves the interference of traditional excavation construction on residents' lives and the damage and impact on the environment. The external anti-corrosion of the crossing pipeline is mainly made of 3PE, FBE and heat-shrinkable tape, which has good anti-corro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B1/08B32B15/08
CPCB32B1/08B32B15/08B32B27/18B32B2262/0223B32B2262/101B32B2262/106B32B2262/108B32B2262/14
Inventor 李荣光赵国星冯少广廉春雷刘国豪张鑫张巍杜娟张轩刘雯
Owner PIPECHINA SOUTH CHINA CO
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