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A kind of preparation method of steel pipe anticorrosion polyolefin adhesive resin

A technology for bonding resins and polyolefins, applied in coatings and other directions, can solve the problems of high energy consumption, high epoxy strength, and low water absorption, and achieve the effects of wide application range, high bonding strength, and reduced energy consumption

Active Publication Date: 2016-12-28
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

PE has low water absorption (less than 0.01%), high epoxy strength, low PE water absorption and good softness of hot melt adhesive, etc., and has high anti-corrosion reliability. The disadvantage is: compared with other material costs, the cost high
[0005] However, the bonding resin formulations of the above two patents are relatively complicated, and the bonding strength is not very high. For example, the highest bonding strength in the first patent is only 165N / cm, and the patent 2 needs to grind the granulation into powder before bonding , high energy consumption, and the bonding strength is not very high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] High-density polyethylene (HDPE60550A) 100 parts

[0030] Norbornenic anhydride (XMNA) 1.5 parts

[0031] Dicumyl peroxide (DCP) 0.06 part

[0032] Hydroquinone (HQ) 0.05 parts

[0033] Weigh the above raw materials according to the mass fraction, put 100 parts of HDPE into the mixer, add different additives (norbornene diacid anhydride (XMNA) 1.5 parts, dicumyl peroxide (DCP) 0.06 parts, p-benzene Diphenol (HQ) 0.05 parts) is metered and dissolved in the acetone reagent, and the completely dissolved solution is slowly poured into the ongoing agitator several times, mixed in the agitator for more than 30 minutes, and then added through the barrel and exhausted in parallel In the twin-screw extruder, the temperature of each section of the extruder is 130°C (feeding port), 165°C, 170°C, 180°C, 185°C, 185°C, 180°C. Screw speed: 220 rpm, feeding rate: 80 rpm, traction, water cooling, air drying, granulation, granulation, film bonding on the tablet machine.

[0034] The ...

Embodiment 2

[0036] High-density polyethylene (HDPE8008) 100 parts

[0037] Epoxy silane crosslinking agent (Silane) 2 parts

[0038] Dicumyl peroxide (DCP) 0.14 parts

[0039] Ethylene-vinyl acetate (EVA) 40 parts

[0040] Hydroquinone (HQ) 0.05 parts

[0041] Weigh the above-mentioned raw materials according to the mass fraction, put 100 parts of HDPE and 40 parts of EVA resin into the mixer and mix them, mix 2 parts of different additives (epoxy silane crosslinking agent (Silane), dicumyl peroxide ( DCP) 0.14 parts, hydroquinone (HQ) 0.05 parts) were metered and dissolved into the acetone reagent, and the completely dissolved solution was slowly poured into the ongoing agitator several times, and mixed in the agitator for more than 30 minutes. The cylinder is fed into the co-rotating parallel exhaust twin-screw extruder, and the temperature of each section of the extruder is 130°C (feeding port), 165°C, 170°C, 180°C, 185°C, 185°C, 180°C. Screw speed: 220 rpm, feeding rate: 80 rpm, t...

Embodiment 3

[0044] High-density polyethylene (HDPE8008) 100 parts

[0045] 1 part maleic anhydride (MAH)

[0046] Dicumyl peroxide (DCP) 0.12 parts

[0047] Ethylene-vinyl acetate (EVA) 30 parts

[0048] Hydroquinone (HQ) 0.10 parts

[0049] Weigh the above raw materials according to the mass fraction, put 100 parts of HDPE and 30 parts of EVA resin into the mixer and mix them, add different additives (1 part of maleic anhydride (MAH), 0.12 parts of dicumyl peroxide (DCP) Parts, hydroquinone (HQ) 0.10 parts,) measure and dissolve into the acetone reagent, slowly pour the completely dissolved solution into the ongoing agitator several times, mix in the agitator for more than 30 minutes, and add it through the barrel In the parallel exhaust twin-screw extruder, the temperature of each section of the extruder is 130°C (feeding port), 165°C, 170°C, 180°C, 185°C, 185°C, 180°C. Screw speed: 220 rpm, feeding rate: 80 rpm, traction, water cooling, air drying, granulation, granulation, film bond...

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Abstract

The invention relates to a steel pipe anti-corrosion polyolefin adhesive resin and a preparation method thereof; 100 parts of high-density polyethylene is used as a matrix resin, and 1 to 2.5 parts of maleic anhydride, norbornene dioic anhydride, epoxy acrylate, and methacrylic acid are used One or a mixture of glycidyl ester and epoxy silane crosslinking agent is the grafting monomer, and one or a blend of 0.06 to 0.14 parts of dicumyl peroxide and benzoyl peroxide is used as the initiator, Add 0 to 0.15 parts of cross-linking agent, 0 to 40 parts of ethylene-vinyl acetate, pre-mix for more than half an hour through a high-speed mixer, and obtain a grafted modified adhesive resin through reactive extrusion; the adhesive resin pellets The adhesive strength reaches 260N / cm, good anti-corrosion performance, low energy consumption, and wide application range. The initial granulation is used as the masterbatch, and different content of polyethylene is added to obtain adhesive resins with different adhesive strengths. Extruder extrusion line operation, greatly reducing energy consumption.

Description

technical field [0001] The invention relates to a preparation method of an anti-corrosion adhesive resin, which belongs to the field of adhesives. Background technique [0002] Corrosion prevention of pipes refers to the measures to slow down or prevent the corrosion and deterioration of pipelines under the chemical and electrochemical action of internal and external media or the metabolic activities of microorganisms. It is a protective technology to prevent pipelines from being corroded by soil, air and transport media (oil, natural gas, etc.). Most of the pipelines for transporting oil and gas are located in complex soil environments, and the transported media are mostly corrosive, so the inner and outer walls of the pipelines may be corroded. Once the pipeline is corroded and perforated, it will cause oil and gas leakage, which will not only interrupt the transportation, but also pollute the environment, and may even cause fire and harm. Therefore, preventing pipeline ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F255/02C09D151/06
Inventor 周豪陈弦朱军胡斌关莉席军熊纯青何波兵杨欢胡绍东
Owner PETROCHINA CO LTD