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Radiation-crosslinked polypropylene heat-shrinkable tape for anti-corrosion joints of submarine pipelines and preparation method thereof

A radiation cross-linking, subsea pipeline technology, applied in the direction of heat activated film/sheet, graft polymer adhesive, mineral oil hydrocarbon copolymer adhesive, etc. It does not solve the problems of shear strength of polypropylene heat shrinkable tape, and achieves the effect of excellent hot water immersion performance, good compatibility and good compatibility.

Active Publication Date: 2020-12-25
CYG CHANGTONG NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] None of the above-mentioned inventions solves the problem of low high-temperature lap shear strength of polypropylene heat-shrinkable belts, and there is a large gap with similar foreign products, which affects the operational reliability and service life of submarine pipelines

Method used

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  • Radiation-crosslinked polypropylene heat-shrinkable tape for anti-corrosion joints of submarine pipelines and preparation method thereof
  • Radiation-crosslinked polypropylene heat-shrinkable tape for anti-corrosion joints of submarine pipelines and preparation method thereof
  • Radiation-crosslinked polypropylene heat-shrinkable tape for anti-corrosion joints of submarine pipelines and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0070] Embodiment 1 Radiation cross-linked polypropylene heat-shrinkable tape for anticorrosion joints of submarine pipelines

[0071] A radiation-crosslinked polypropylene heat-shrinkable tape for submarine pipeline anticorrosion nodes, consisting of a radiation-crosslinked polypropylene base material and a polypropylene hot-melt adhesive, the components of the polypropylene hot-melt adhesive are shown in Table 1 by weight;

[0072] A method for preparing a radiation-crosslinked polypropylene heat-shrinkable tape for anticorrosion joints of submarine pipelines, comprising the following steps:

[0073] Step 1: After weighing the polypropylene hot-melt collagen material according to the formula, add it to the mixer for mixing, the stirring speed is 300r / min, and the mixing time is 45min;

[0074] Step 2: Put the uniformly mixed polypropylene hot-melt collagen material into the discharge port of the twin-screw extruder through the hopper, melt and extrude,

[0075] The extruder...

Embodiment 2-5

[0081] A radiation-crosslinked polypropylene heat-shrinkable tape for submarine pipeline anticorrosion nodes, consisting of a radiation-crosslinked polypropylene base material and a polypropylene hot-melt adhesive, the components of the polypropylene hot-melt adhesive are shown in Table 1 by weight, The preparation method is the same as in Example 1.

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Abstract

The invention provides a radiation cross-linked polypropylene thermal shrinkage belt for a submarine pipeline anticorrosion node and a preparation method of the radiation cross-linked polypropylene thermal shrinkage belt. The radiation cross-linked polypropylene thermal shrinkage belt for the submarine pipeline anticorrosion node is composed of a radiation cross-linked polypropylene base materialand a polypropylene hot melt adhesive, and the polypropylene hot melt adhesive comprises the components by weight: 35%-55% of a maleic anhydride grafted polypropylene random copolymer, 10%-20% of maleic anhydride grafted block copolymer polypropylene, 10%-15% of maleic anhydride grafted metallocene polyethylene, 10%-20% of a polyolefin elastomer, 10%-20% of tackifying resin, 5%-10% of chlorinatedpolypropylene, 3%-7% of an amorphous alpha-olefin copolymer, and 1%-3% of graphene oxide (GO). The radiation cross-linked polypropylene thermal shrinkage belt for the submarine pipeline anti-corrosionnode has quite high shear strength and peel strength at normal temperature and high temperature, has good hot water soaking resistance, and meets the performance requirements of submarine pipelines under high temperature and seawater corrosion.

Description

technical field [0001] The invention relates to the technical field of anticorrosion of oil and gas pipelines, in particular to a radiation-crosslinked polypropylene heat-shrinkable tape for anticorrosion nodes of submarine pipelines and a preparation method thereof. Background technique [0002] With the continuous advancement of my country's offshore oil extraction technology, the development of offshore oil and gas fields has gradually shifted from shallow waters to deep waters, and there is an increasing demand for transportation of oil and gas extracted from the seabed. Pipeline transportation is one of the main methods of subsea oil and gas transportation, which has the characteristics of continuous, fast, safe and economical. The laying quality of marine pipelines such as subsea oil and gas gathering and transportation pipelines, trunk pipelines and affiliated pressurized platforms, as well as the main pipes connected to the platform, is very important for transmissio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J7/24C09J7/35C09J151/06C09J123/08C09J123/28C09J123/00C09J157/02C09J145/00C09J11/04
CPCC08L2205/025C08L2205/035C09J11/04C09J151/06C09J2423/106C09J2451/00C09J7/243C09J7/35C08L51/06C08L23/0815C08L23/28C08L23/00C08L57/02C08L45/00C08K3/042
Inventor 徐焕辉张真易王洲洲夏梦军谭南枢谢志坚吴强陈君
Owner CYG CHANGTONG NEW MATERIAL