WO2016090835A1 - Anticorrosion insulation multilayer system for deep-sea steel delivery pipes - Google Patents

Anticorrosion insulation multilayer system for deep-sea steel delivery pipes Download PDF

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WO2016090835A1
WO2016090835A1 PCT/CN2015/078297 CN2015078297W WO2016090835A1 WO 2016090835 A1 WO2016090835 A1 WO 2016090835A1 CN 2015078297 W CN2015078297 W CN 2015078297W WO 2016090835 A1 WO2016090835 A1 WO 2016090835A1
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layer
polypropylene
hot melt
adhesive layer
melt adhesive
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PCT/CN2015/078297
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French (fr)
Chinese (zh)
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仇磊
丁武斌
阮龙俊
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上海海隆石油化工研究所
上海海隆赛能新材料有限公司
海隆石油工业集团有限公司
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Publication of WO2016090835A1 publication Critical patent/WO2016090835A1/en

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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/08—Anti-corrosive paints
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
    • F16L58/02—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings
    • F16L58/04—Coatings characterised by the materials used
    • F16L58/10—Coatings characterised by the materials used by rubber or plastics
    • F16L58/1054—Coatings characterised by the materials used by rubber or plastics the coating being placed outside the pipe
    • F16L58/1072—Coatings characterised by the materials used by rubber or plastics the coating being placed outside the pipe the coating being a sprayed layer
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L57/00—Protection of pipes or objects of similar shape against external or internal damage or wear
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
    • F16L58/02—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings
    • F16L58/04—Coatings characterised by the materials used
    • F16L58/10—Coatings characterised by the materials used by rubber or plastics
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L59/00—Thermal insulation in general
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L59/00—Thermal insulation in general
    • F16L59/02—Shape or form of insulating materials, with or without coverings integral with the insulating materials
    • F16L59/029—Shape or form of insulating materials, with or without coverings integral with the insulating materials layered

Definitions

  • the invention relates to the technical field of industrial coatings, in particular to a multi-layer system suitable for anticorrosion and heat preservation of deep sea steel conveying pipes.
  • metal pipes for long-distance transportation of resources is a common method used in the industry at this stage, such as oil extraction, natural gas transportation, heat supply and water supply.
  • the protection of metal pipelines is particularly important because there are long metal pipelines buried in people's living places, and some areas are even very harsh.
  • the exploitation of subsea oil needs to be transported over long distances. Not only is the seabed situation complicated, but the impact on the pipeline is large and it is difficult for people to check in time.
  • the long-distance pipeline transportation will greatly reduce the temperature of the transport medium, thus making the oil
  • the wax contained in the precipitate causes the narrowness or even blockage of the conveying pipe. Therefore, special care should be given to the anti-corrosion and heat insulation of the steel conveying pipe conveying the seabed oil.
  • the existing protection is mainly to protect the steel pipeline by the coating of three layers of polyethylene (3LPE) or three layers of polypropylene (3LPP).
  • Chinese Patent Document CN103383025A discloses a "3PE coating for pipe protection”;
  • Chinese patent document CN101270211A describes a "method for preparing an external anticorrosive material for 3PP coating".
  • the above patent documents are anti-corrosion systems based on PE or PP, in which the PE coating can only reach a temperature of up to 80 ° C, and the PP coating can only reach a temperature of 110 ° C; if the temperature continues to be used, Elevation can result in a decrease in the performance of PE or PP preservative systems.
  • PE or PP anti-corrosion system uses hard plastics, and the product has high thermal conductivity (PE is 0.3-0.5W/mK; PP is 0.2-0.3W/mK), which is not suitable for long-term maintenance. High temperature medium.
  • the Chinese patent document CN201982816U discloses "a multilayer insulating coating containing expanded polypropylene" which can be applied to a use temperature of 140 °C.
  • 140 ° C is close to the melting point of polypropylene, and the polypropylene material directly coating the steel conveying pipe will result in shortened service life of the whole pipe, and the outer layer is not provided with a barrier layer with high barrier effect, if any If too much water vapor penetrates into the interior of the anti-corrosion layer, the failure of the anti-corrosion coating will be more rapid under high heat and high humidity conditions.
  • the object of the present invention is to solve the above problems and to provide a multi-layer system for anticorrosion and heat preservation of deep sea steel conveying pipes, which has a high corrosion resistant phenolic epoxy coating as a bottom layer and a polyamide heat insulating material as an inner layer.
  • Foamed polypropylene insulation material is used as the intermediate layer, and polyvinylidene chloride high barrier material is used as the outer layer to prevent the invasion of oxygen and water vapor.
  • Hard polypropylene material is used as the outermost layer to prevent flaws during transportation and installation. The bumps are connected by an adhesive between the layers.
  • the multi-layer system can be used for conveying steel pipes with a medium temperature not higher than 160 ° C, and can be used in a deep sea with a water depth of less than 600 m, which can prevent the oil temperature from falling too much during long-distance transportation and lead to steel pipe joints.
  • the generation of the wax phenomenon can ensure the corrosion protection and heat preservation of the steel conveying pipeline and work stably for a long time.
  • the present invention adopts the following technical solutions.
  • a multi-layer system for anti-corrosion insulation of deep-sea steel conveying pipes characterized in that it is composed of at least five layers:
  • a phenolic epoxy powder coating (bottom layer) sprayed on the surface of the steel pipe, the phenolic epoxy powder coating having a thickness of 50 to 200 ⁇ m;
  • the phenolic epoxy powder coating (underlayer) is covered with a polyamide heat insulation layer (inner layer), the polyamide insulation layer has a thickness of 10 to 50 mm;
  • the polyamide heat insulation layer (inner layer) is covered with a foamed polypropylene layer (intermediate layer), the foamed polypropylene layer has a thickness of 30 to 50 mm;
  • the foamed polypropylene layer (intermediate layer) is covered with a polyvinylidene chloride separator (outer layer), the polyvinylidene chloride separator (outer layer) has a thickness of 50 to 200 ⁇ m;
  • the polyvinylidene chloride separator (outer layer) is covered with a rigid polypropylene coating (outermost layer), the rigid polypropylene coating (outer layer) has a thickness of 3 to 5 mm;
  • the adhesive layer is a polyamide hot melt adhesive layer or a polypropylene copolymer hot melt adhesive layer having a thickness of 50 to 200 ⁇ m.
  • the phenolic epoxy powder coating has a glass transition temperature of >155 ° C after completion of curing.
  • the polyamide heat insulating layer has a melting point of >200 °C.
  • the foamed polypropylene layer has a thermal conductivity of ⁇ 0.14 W/mK.
  • a multi-layer system for anti-corrosion insulation of deep-sea steel conveying pipes characterized in that the multi-layer system is composed of a nine-layer structure:
  • a phenolic epoxy powder coating (bottom layer) having a glass transition temperature of >155 ° C and a thickness of 50 to 200 ⁇ m after spraying and solidifying on the surface of the steel pipe;
  • a rigid polypropylene anticorrosive layer (outermost layer) having a thickness of 3 to 5 mm is coated on the polypropylene copolymer hot melt adhesive layer III.
  • the adhesive layer - the polyamide hot melt adhesive layer or the polypropylene copolymer hot melt adhesive layer I, the polypropylene copolymer hot melt adhesive layer II, the polypropylene copolymer hot melt adhesive layer III has a thickness of 50 ⁇ 200 ⁇ m.
  • the multilayer system of the present invention uses a highly corrosion-resistant phenolic epoxy coating as a primer layer, a polyamide heat insulating material as an inner layer, and a foamed polypropylene heat insulating material as an intermediate layer, which is made of polyvinylidene chloride.
  • the barrier material acts as an outer layer to prevent the intrusion of oxygen and water vapor.
  • the rigid polypropylene material is used as the outermost layer to prevent bumps during transportation and installation, and the layers are connected by adhesives to achieve corrosion protection and heat preservation. The best effect of anti-collision and scratch prevention.
  • the multi-layer system can be used to transport steel pipes with a medium temperature not higher than 160 ° C. It can be used in deep seas with a water depth of less than 600 m to prevent excessive oil temperature drop during long-distance transportation.
  • the generation of waxing phenomenon in the pipeline can ensure the corrosion protection and heat preservation of the steel conveying pipeline and work stably for a long time.
  • FIG. 1 is a schematic structural view of a multi-layer system for anticorrosion and heat preservation of a deep sea steel conveying pipe according to the present invention.
  • a multi-layer system for anti-corrosion insulation of deep-sea steel conveying pipes which is composed of at least five layers (excluding an adhesive layer):
  • the first layer a phenolic epoxy powder coating 2 (bottom layer) sprayed on the surface of the steel pipe 1, the glass transition temperature of the coating after the curing of the phenolic epoxy powder coating 2 is >155 ° C, and the thickness thereof is 50 to 200 ⁇ m. .
  • Second layer a polyamide heat insulating layer 4 (inner layer) covered on the phenolic epoxy powder coating 2, the polyamide heat insulating layer 4 having a melting point of >200 ° C and a thickness of 10 to 50 mm.
  • Third layer a foamed polypropylene layer 6 (intermediate layer) covered on the polyamide heat insulating layer 4, the expanded polypropylene Layer 6 should have a thermal conductivity of ⁇ 0.14 W/mK and a thickness of 30 to 50 mm.
  • the fourth layer a polyvinylidene chloride separator 8 (outer layer) covered on the foamed polypropylene layer 6, and the polyvinylidene chloride separator 8 has a thickness of 50 to 200 ⁇ m.
  • the fifth layer a rigid polypropylene anticorrosive layer 10 (the outermost layer) covered on the polyvinylidene chloride separator 8, wherein the thickness of the rigid polypropylene anticorrosive layer 10 (the outermost layer) is 3 5mm.
  • the adhesive layer is a polyamide hot melt adhesive layer 3 (first adhesive layer) and a polypropylene copolymer hot melt adhesive layer I 5 (second adhesive layer), and a polypropylene copolymer hot melt adhesive layer II 7 ( The third adhesive layer) and the polypropylene copolymer hot melt adhesive layer III 9 (fourth adhesive layer) having a thickness of 50 to 200 ⁇ m.
  • a multi-layer system for anti-corrosion insulation of deep-sea steel conveying pipes consisting of a nine-layer structure (including an adhesive layer):
  • a phenolic epoxy powder coating 2 (bottom layer) having a glass transition temperature of >155 ° C and a thickness of 50 to 200 ⁇ m after curing of the powder coating on the surface of the steel pipe 1;
  • a polyamide hot melt adhesive layer 3 (first adhesive layer) having a melting point of >200 ° C covered on the phenolic epoxy powder coating 2;
  • a polyamide heat insulation layer 4 (inner layer) having a melting point of >200 ° C and a thickness of 10 to 50 mm covered on the polyamide hot melt adhesive layer 3;
  • a foamed polypropylene layer 6 (intermediate layer) having a thermal conductivity of ⁇ 0.14 W/mK and a thickness of 30 to 50 mm covered on the polypropylene copolymer hot melt adhesive layer I 5;
  • a polyvinylidene chloride separator 8 (outer layer) having a thickness of 50 to 200 ⁇ m covered on the polypropylene copolymer hot melt adhesive layer II 7;
  • a rigid polypropylene anticorrosive layer 10 (outermost layer) having a thickness of 3 to 5 mm covered on the polypropylene copolymer hot melt adhesive layer III 9 .
  • the polyamide hot melt adhesive layer 3 and the polypropylene copolymer hot melt adhesive layer I 5 , the polypropylene copolymer hot melt adhesive layer II 7 and the polypropylene copolymer hot melt adhesive layer III 9 have a thickness of 50 to 200 ⁇ m.
  • the phenolic epoxy powder coating 2 is a phenolic epoxy powder coating manufactured by Jotun Corporation under the designation EP-F 2004.
  • the polyamide heat insulating layer 4 is a polyamide manufactured by Mitsubishi Corporation of Japan under the designation 1010C2.
  • the foamed polypropylene layer 6 was made of expanded polypropylene of the type Neopolen KT200 manufactured by BASF Corporation.
  • the polyvinylidene chloride separator 8 is made of polyvinylidene chloride manufactured by Arkema under the designation Kynar 740.
  • the rigid polypropylene anticorrosive layer 10 is made of polypropylene anticorrosive material of the brand SN-103 produced by Shanghai Hailong Saineng New Material Co., Ltd.
  • the polyamide hot melt adhesive layer 3 is made of a polyamide hot melt adhesive manufactured by Henkel under the trade name of Macromelt 6832S.
  • the polypropylene copolymer hot melt adhesive layer I 5 (including the polypropylene copolymer hot melt adhesive layer II 7 and the polypropylene copolymer hot melt adhesive layer III 9) is produced by Shanghai Hailong Saineng New Material Co., Ltd., and the grade is SN-104 polypropylene copolymer hot melt adhesive.
  • the preparation process of the multi-layer system for anticorrosion and heat preservation of deep sea steel conveying pipe is as follows:
  • the multi-layer system for anti-corrosion and heat preservation of deep-sea steel conveying pipe can transport higher temperature medium and ensure the temperature of conveying medium during long-distance transportation, so that oil is in the oil. The wax contained will not precipitate and will keep the conveying pipe clear.

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  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
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Abstract

An anticorrosion insulation multilayer system for deep-sea steel delivery pipes, which is composed of at least five-layer structure: a phenolic epoxy powdered paint (2) sprayed on the surface of a steel pipe (1); a polyamide insulation layer (4) covered on the phenolic epoxy powdered paint (2); a foamed polypropylene layer (6) covered on the polyamide insulation layer (4); a polyvinylidene chloride isolating layer (8) covered on the foamed polypropylene layer (6); a hard polypropylene anticorrosion layer (10) covered on the polyvinylidene chloride isolating layer (8); the layers are connected by a glue layer with each other to achieve the optimal effects of corrosion resistance, thermal insulation, collision prevention and scratch prevention. The multilayer system can be applicable to steel pipes delivering a medium at a temperature not higher than 160ºC, can be applicable to deep sea with a depth of water less than 600 m, can prevent the phenomenon of waxing in the steel pipes caused by excess drop of petroleum temperature during a long-distance delivery and can ensure the anticorrosion insulation and long-term stable operation of the steel delivery pipes.

Description

用于深海钢质输送管防腐保温的多层体系Multi-layer system for anti-corrosion insulation of deep sea steel conveying pipe 技术领域Technical field
本发明涉及工业涂料技术领域，具体地说，是一种适用于深海钢质输送管防腐保温的多层体系。The invention relates to the technical field of industrial coatings, in particular to a multi-layer system suitable for anticorrosion and heat preservation of deep sea steel conveying pipes.
背景技术Background technique
利用金属管道进行资源的长途输送是现阶段工业上采用的常见手段，如，石油开采、天然气输送、供热输送及供水输送等等。在管道的长途输送中，对金属管道的保护是尤为重要的，因为，有较长的金属管道是埋在远离人们的生活居住点的，有的地段甚至环境状况非常恶劣。例如，海底石油的开采需要经过长距离的管道输送，不仅海底情况复杂，对输送管道的影响大且人们难以及时检查，而且长距离的管道输送会使输送介质的温度大幅度降低，从而使石油中所含有的蜡析出而导致输送管道的狭窄甚至堵塞，因此，对输送海底石油的钢质输送管道的防腐保温问题应给予特殊关照。The use of metal pipes for long-distance transportation of resources is a common method used in the industry at this stage, such as oil extraction, natural gas transportation, heat supply and water supply. In the long-distance transportation of pipelines, the protection of metal pipelines is particularly important because there are long metal pipelines buried in people's living places, and some areas are even very harsh. For example, the exploitation of subsea oil needs to be transported over long distances. Not only is the seabed situation complicated, but the impact on the pipeline is large and it is difficult for people to check in time. Moreover, the long-distance pipeline transportation will greatly reduce the temperature of the transport medium, thus making the oil The wax contained in the precipitate causes the narrowness or even blockage of the conveying pipe. Therefore, special care should be given to the anti-corrosion and heat insulation of the steel conveying pipe conveying the seabed oil.
对之现有的保护主要是通过三层聚乙烯(3LPE)或三层聚丙烯(3LPP)的涂层对钢质管道进行防腐。中国专利文献CN103383025A公开了一种“3PE涂层对管道的保护”；中国专利文献CN101270211A介绍了一种“3PP涂层用外防腐材料的制备方法”。但是上述专利文献都是以PE或PP为基础的防腐体系，其中，PE涂层的使用温度最高只能达到80℃，而PP涂层的使用温度最高也只能达到110℃；如果使用温度继续升高会导致PE或PP防腐体系性能下降。此外，PE或PP防腐体系使用的都是硬质塑料，产品的导热系数较高(PE为0.3～0.5W/mK；PP为0.2～0.3W/mK)，并不适合输送需长时间保持较高温度的介质。The existing protection is mainly to protect the steel pipeline by the coating of three layers of polyethylene (3LPE) or three layers of polypropylene (3LPP). Chinese Patent Document CN103383025A discloses a "3PE coating for pipe protection"; Chinese patent document CN101270211A describes a "method for preparing an external anticorrosive material for 3PP coating". However, the above patent documents are anti-corrosion systems based on PE or PP, in which the PE coating can only reach a temperature of up to 80 ° C, and the PP coating can only reach a temperature of 110 ° C; if the temperature continues to be used, Elevation can result in a decrease in the performance of PE or PP preservative systems. In addition, PE or PP anti-corrosion system uses hard plastics, and the product has high thermal conductivity (PE is 0.3-0.5W/mK; PP is 0.2-0.3W/mK), which is not suitable for long-term maintenance. High temperature medium.
中国专利文献CN201982816U公开了“一种含有发泡聚丙烯的多层保温涂层”，它能适用于140℃的使用温度。但是，140℃已接近聚丙烯的熔点，以此聚丙烯材料直接包覆所述钢质输送管道会导致管道整体的使用寿命缩短，而且其外层没有设置有高阻隔效果的隔离层，如果有过多水汽渗入防腐层内部的话，在高热高湿条件下，防腐涂层的失效会更加迅速。The Chinese patent document CN201982816U discloses "a multilayer insulating coating containing expanded polypropylene" which can be applied to a use temperature of 140 °C. However, 140 ° C is close to the melting point of polypropylene, and the polypropylene material directly coating the steel conveying pipe will result in shortened service life of the whole pipe, and the outer layer is not provided with a barrier layer with high barrier effect, if any If too much water vapor penetrates into the interior of the anti-corrosion layer, the failure of the anti-corrosion coating will be more rapid under high heat and high humidity conditions.
发明内容Summary of the invention
本发明的目的在于解决上述问题，提供一种用于深海钢质输送管防腐保温的多层体系，其以高抗腐蚀的酚醛环氧涂层为底层，采用聚酰胺隔热材料作为内层，采用发泡聚丙烯保温材料作为中间层，采用聚偏二氯乙烯高阻隔材料作为外层以防止氧气和水汽的入侵，采用硬质聚丙烯材料作为最外层以防止运输和安装过程中的磕磕碰碰，所述各层之间用胶粘剂连接。所述多层体系可用于输送介质温度不高于160℃的钢质管道，能在水深小于600米的深海中使用，可防止在长距离输送过程中油品温度下降过多而导致钢质管道结蜡现象的产生，能保证钢质输送管道防腐保温、长期稳定地工作。 The object of the present invention is to solve the above problems and to provide a multi-layer system for anticorrosion and heat preservation of deep sea steel conveying pipes, which has a high corrosion resistant phenolic epoxy coating as a bottom layer and a polyamide heat insulating material as an inner layer. Foamed polypropylene insulation material is used as the intermediate layer, and polyvinylidene chloride high barrier material is used as the outer layer to prevent the invasion of oxygen and water vapor. Hard polypropylene material is used as the outermost layer to prevent flaws during transportation and installation. The bumps are connected by an adhesive between the layers. The multi-layer system can be used for conveying steel pipes with a medium temperature not higher than 160 ° C, and can be used in a deep sea with a water depth of less than 600 m, which can prevent the oil temperature from falling too much during long-distance transportation and lead to steel pipe joints. The generation of the wax phenomenon can ensure the corrosion protection and heat preservation of the steel conveying pipeline and work stably for a long time.
为实现上述目的，本发明采取了以下技术方案。In order to achieve the above object, the present invention adopts the following technical solutions.
一种用于深海钢质输送管防腐保温的多层体系，其特征是，至少由五层结构构成：A multi-layer system for anti-corrosion insulation of deep-sea steel conveying pipes, characterized in that it is composed of at least five layers:
在钢质管道表面喷涂的酚醛环氧粉末涂料(底层)，所述酚醛环氧粉末涂料的厚度为50～200μm；a phenolic epoxy powder coating (bottom layer) sprayed on the surface of the steel pipe, the phenolic epoxy powder coating having a thickness of 50 to 200 μm;
在所述酚醛环氧粉末涂料(底层)上覆盖聚酰胺隔热层(内层)，所述聚酰胺隔热层的厚度为10～50mm；The phenolic epoxy powder coating (underlayer) is covered with a polyamide heat insulation layer (inner layer), the polyamide insulation layer has a thickness of 10 to 50 mm;
在所述聚酰胺隔热层(内层)上覆盖发泡聚丙烯层(中间层)，所述发泡聚丙烯层的厚度为30～50mm；The polyamide heat insulation layer (inner layer) is covered with a foamed polypropylene layer (intermediate layer), the foamed polypropylene layer has a thickness of 30 to 50 mm;
在所述发泡聚丙烯层(中间层)上覆盖聚偏二氯乙烯隔离层(外层)，所述聚偏二氯乙烯隔离层(外层)的厚度为50～200μm；The foamed polypropylene layer (intermediate layer) is covered with a polyvinylidene chloride separator (outer layer), the polyvinylidene chloride separator (outer layer) has a thickness of 50 to 200 μm;
在所述聚偏二氯乙烯隔离层(外层)上覆盖硬质聚丙烯防腐层(最外层)，所述硬质聚丙烯防腐层(最外层)的厚度为3～5mm；The polyvinylidene chloride separator (outer layer) is covered with a rigid polypropylene coating (outermost layer), the rigid polypropylene coating (outer layer) has a thickness of 3 to 5 mm;
在所述酚醛环氧粉末涂料(底层)、聚酰胺隔热层(内层)、发泡聚丙烯层(中间层)、聚偏二氯乙烯隔离层(外层)与硬质聚丙烯防腐层(最外层)的各层之间夹覆有胶粘层。In the phenolic epoxy powder coating (bottom layer), polyamide insulation layer (inner layer), foamed polypropylene layer (intermediate layer), polyvinylidene chloride separator (outer layer) and rigid polypropylene coating An adhesive layer is sandwiched between the layers of the (outermost layer).
进一步，所述胶粘层为聚酰胺热熔胶层或者聚丙烯共聚物热熔胶层，其厚度为50～200μm。Further, the adhesive layer is a polyamide hot melt adhesive layer or a polypropylene copolymer hot melt adhesive layer having a thickness of 50 to 200 μm.
进一步，所述酚醛环氧粉末涂料，固化完成后粉末涂层玻璃化转变温度＞155℃。Further, the phenolic epoxy powder coating has a glass transition temperature of >155 ° C after completion of curing.
进一步，所述聚酰胺隔热层的熔点＞200℃。Further, the polyamide heat insulating layer has a melting point of >200 °C.
进一步，所述发泡聚丙烯层的导热系数＜0.14W/mK。Further, the foamed polypropylene layer has a thermal conductivity of <0.14 W/mK.
一种用于深海钢质输送管防腐保温的多层体系，其特征是，所述多层体系由九层结构构成：A multi-layer system for anti-corrosion insulation of deep-sea steel conveying pipes, characterized in that the multi-layer system is composed of a nine-layer structure:
在钢质管道表面喷涂固化完成后玻璃化转变温度＞155℃、厚度为50～200μm的酚醛环氧粉末涂料(底层)；a phenolic epoxy powder coating (bottom layer) having a glass transition temperature of >155 ° C and a thickness of 50 to 200 μm after spraying and solidifying on the surface of the steel pipe;
在所述酚醛环氧粉末涂料上覆盖熔点＞200℃的聚酰胺热熔胶层(第一胶粘层)；Coating the phenolic epoxy powder coating with a polyamide hot melt adhesive layer (first adhesive layer) having a melting point of >200 ° C;
在所述聚酰胺热熔胶层上覆盖熔点＞200℃、厚度为10～50mm的聚酰胺隔热层(内层)；Coating the polyamide hot melt adhesive layer with a polyamide thermal insulation layer (inner layer) having a melting point of >200 ° C and a thickness of 10 to 50 mm;
在所述聚酰胺隔热层上覆盖聚丙烯共聚物热熔胶层I(第二胶粘层)；Covering the polyamide heat insulating layer with a polypropylene copolymer hot melt adhesive layer I (second adhesive layer);
在所述聚丙烯共聚物热熔胶层I上覆盖导热系数＜0.14W/mK、厚度为30～50mm的发泡聚丙烯层(中间层)；Coating a foamed polypropylene layer (intermediate layer) having a thermal conductivity of <0.14 W/mK and a thickness of 30 to 50 mm on the polypropylene copolymer hot melt adhesive layer I;
在所述发泡聚丙烯层上覆盖聚丙烯共聚物热熔胶层II(第三胶粘层)；Covering the foamed polypropylene layer with a polypropylene copolymer hot melt adhesive layer II (third adhesive layer);
在所述聚丙烯共聚物热熔胶层II上覆盖厚度为50～200μm的聚偏二氯乙烯隔离层(外层)； Covering the polypropylene copolymer hot melt adhesive layer II with a polyvinylidene chloride separator (outer layer) having a thickness of 50-200 μm;
在所述聚偏二氯乙烯隔离层上覆盖聚丙烯共聚物热熔胶层III(第四胶粘层)；Covering the polyvinylidene chloride separator with a polypropylene copolymer hot melt adhesive layer III (fourth adhesive layer);
在所述聚丙烯共聚物热熔胶层III上覆盖厚度为3～5mm的硬质聚丙烯防腐层(最外层)。A rigid polypropylene anticorrosive layer (outermost layer) having a thickness of 3 to 5 mm is coated on the polypropylene copolymer hot melt adhesive layer III.
进一步，所述胶粘层——聚酰胺热熔胶层或者聚丙烯共聚物热熔胶层I、聚丙烯共聚物热熔胶层II、聚丙烯共聚物热熔胶层III的厚度为50～200μm。Further, the adhesive layer - the polyamide hot melt adhesive layer or the polypropylene copolymer hot melt adhesive layer I, the polypropylene copolymer hot melt adhesive layer II, the polypropylene copolymer hot melt adhesive layer III has a thickness of 50 ~ 200 μm.
本发明用于深海钢质输送管防腐保温的多层体系的积极效果是：The positive effects of the multi-layer system for anticorrosion and heat preservation of deep sea steel conveying pipes of the present invention are as follows:
(1)本发明的多层体系以高抗腐蚀的酚醛环氧涂层为底层，采用聚酰胺隔热材料作为内层，采用发泡聚丙烯保温材料作为中间层，采用聚偏二氯乙烯高阻隔材料作为外层以防止氧气和水汽的入侵，采用硬质聚丙烯材料作为最外层以防止运输和安装过程中的磕磕碰碰，在所述各层之间用胶粘剂连接，达到防腐保温、防碰防刮的最佳效果。(1) The multilayer system of the present invention uses a highly corrosion-resistant phenolic epoxy coating as a primer layer, a polyamide heat insulating material as an inner layer, and a foamed polypropylene heat insulating material as an intermediate layer, which is made of polyvinylidene chloride. The barrier material acts as an outer layer to prevent the intrusion of oxygen and water vapor. The rigid polypropylene material is used as the outermost layer to prevent bumps during transportation and installation, and the layers are connected by adhesives to achieve corrosion protection and heat preservation. The best effect of anti-collision and scratch prevention.
(2)所述多层体系可用于输送介质温度不高于160℃的钢质管道，能在水深小于600米的深海中使用，可防止在长距离输送过程中石油温度下降过多而导致钢质管道结蜡现象的产生，能保证钢质输送管道防腐保温、长期稳定地工作。(2) The multi-layer system can be used to transport steel pipes with a medium temperature not higher than 160 ° C. It can be used in deep seas with a water depth of less than 600 m to prevent excessive oil temperature drop during long-distance transportation. The generation of waxing phenomenon in the pipeline can ensure the corrosion protection and heat preservation of the steel conveying pipeline and work stably for a long time.
(3)防腐保温且防碰防刮效果好；施工方便，容易实施。(3) Anti-corrosion insulation and anti-collision and anti-scratch effect; convenient construction and easy implementation.
附图说明DRAWINGS
附图1为本发明用于深海钢质输送管防腐保温的多层体系的结构示意图。1 is a schematic structural view of a multi-layer system for anticorrosion and heat preservation of a deep sea steel conveying pipe according to the present invention.
图中的标号分别为：The labels in the figure are:
1、钢质管道；                 2、酚醛环氧粉末涂料；1. Steel pipeline; 2. Phenolic epoxy powder coating;
3、聚酰胺热熔胶层；           4、聚酰胺隔热层；3. Polyamide hot melt adhesive layer; 4. Polyamide heat insulation layer;
5、聚丙烯共聚物热熔胶层I；    6、发泡聚丙烯层；5, polypropylene copolymer hot melt adhesive layer I; 6, foamed polypropylene layer;
7、聚丙烯共聚物热熔胶层II；   8、聚偏二氯乙烯隔离层；7. Polypropylene copolymer hot melt adhesive layer II; 8. Polyvinylidene chloride isolation layer;
9、聚丙烯共聚物热熔胶层III；  10、硬质聚丙烯防腐层。9, polypropylene copolymer hot melt adhesive layer III; 10, rigid polypropylene anti-corrosion layer.
具体实施方式detailed description
以下结合附图给出本发明用于深海钢质输送管防腐保温的多层体系的具体实施方式，但是应当指出，本发明的实施不限于以下的实施方式。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, specific embodiments of the multi-layer system for anticorrosive insulation of deep sea steel conveying pipes of the present invention will be described with reference to the accompanying drawings, but it should be noted that the practice of the present invention is not limited to the following embodiments.
参见图1。一种用于深海钢质输送管防腐保温的多层体系，至少由五层结构(不包括胶粘层)构成：See Figure 1. A multi-layer system for anti-corrosion insulation of deep-sea steel conveying pipes, which is composed of at least five layers (excluding an adhesive layer):
第一层：在钢质管道1表面喷涂的酚醛环氧粉末涂料2(底层)，所述酚醛环氧粉末涂料2固化完成后涂层的玻璃化转变温度＞155℃，其厚度为50～200μm。The first layer: a phenolic epoxy powder coating 2 (bottom layer) sprayed on the surface of the steel pipe 1, the glass transition temperature of the coating after the curing of the phenolic epoxy powder coating 2 is >155 ° C, and the thickness thereof is 50 to 200 μm. .
第二层：在所述酚醛环氧粉末涂料2上覆盖的聚酰胺隔热层4(内层)，所述聚酰胺隔热层4的熔点应＞200℃，其厚度为10～50mm。Second layer: a polyamide heat insulating layer 4 (inner layer) covered on the phenolic epoxy powder coating 2, the polyamide heat insulating layer 4 having a melting point of >200 ° C and a thickness of 10 to 50 mm.
第三层：在所述聚酰胺隔热层4上覆盖的发泡聚丙烯层6(中间层)，所述发泡聚丙烯 层6的导热系数应＜0.14W/mK，其厚度为30～50mm。Third layer: a foamed polypropylene layer 6 (intermediate layer) covered on the polyamide heat insulating layer 4, the expanded polypropylene Layer 6 should have a thermal conductivity of <0.14 W/mK and a thickness of 30 to 50 mm.
第四层：在所述发泡聚丙烯层6上覆盖的聚偏二氯乙烯隔离层8(外层)，所述聚偏二氯乙烯隔离层8的厚度为50～200μm。The fourth layer: a polyvinylidene chloride separator 8 (outer layer) covered on the foamed polypropylene layer 6, and the polyvinylidene chloride separator 8 has a thickness of 50 to 200 μm.
第五层：在所述聚偏二氯乙烯隔离层8上覆盖的硬质聚丙烯防腐层10(最外层)，所述硬质聚丙烯防腐层10(最外层)的厚度为3～5mm。The fifth layer: a rigid polypropylene anticorrosive layer 10 (the outermost layer) covered on the polyvinylidene chloride separator 8, wherein the thickness of the rigid polypropylene anticorrosive layer 10 (the outermost layer) is 3 5mm.
注意：在所述酚醛环氧粉末涂料2(底层)、聚酰胺隔热层4(内层)、发泡聚丙烯层6(中间层)、聚偏二氯乙烯隔离层8(外层)与硬质聚丙烯防腐层10(最外层)的各层之间应夹覆胶粘层。所述胶粘层为聚酰胺热熔胶层3(第一胶粘层)以及聚丙烯共聚物热熔胶层I 5(第二胶粘层)、聚丙烯共聚物热熔胶层II 7(第三胶粘层)和聚丙烯共聚物热熔胶层III 9(第四胶粘层)，所述胶粘层的厚度为50～200μm。Note: in the phenolic epoxy powder coating 2 (bottom layer), polyamide insulation layer 4 (inner layer), foamed polypropylene layer 6 (intermediate layer), polyvinylidene chloride separator 8 (outer layer) and An adhesive layer should be sandwiched between the layers of the rigid polypropylene anticorrosive layer 10 (outermost layer). The adhesive layer is a polyamide hot melt adhesive layer 3 (first adhesive layer) and a polypropylene copolymer hot melt adhesive layer I 5 (second adhesive layer), and a polypropylene copolymer hot melt adhesive layer II 7 ( The third adhesive layer) and the polypropylene copolymer hot melt adhesive layer III 9 (fourth adhesive layer) having a thickness of 50 to 200 μm.
或者说：Or:
一种用于深海钢质输送管防腐保温的多层体系，所述多层体系由九层结构(含胶粘层)构成：A multi-layer system for anti-corrosion insulation of deep-sea steel conveying pipes, the multi-layer system consisting of a nine-layer structure (including an adhesive layer):
在钢质管道1表面喷涂的粉末涂层固化后玻璃化转变温度＞155℃、厚度为50～200μm的酚醛环氧粉末涂料2(底层)；a phenolic epoxy powder coating 2 (bottom layer) having a glass transition temperature of >155 ° C and a thickness of 50 to 200 μm after curing of the powder coating on the surface of the steel pipe 1;
在所述酚醛环氧粉末涂料2上覆盖的熔点＞200℃的聚酰胺热熔胶层3(第一胶粘层)；a polyamide hot melt adhesive layer 3 (first adhesive layer) having a melting point of >200 ° C covered on the phenolic epoxy powder coating 2;
在所述聚酰胺热熔胶层3上覆盖的熔点＞200℃、厚度为10～50mm的聚酰胺隔热层4(内层)；a polyamide heat insulation layer 4 (inner layer) having a melting point of >200 ° C and a thickness of 10 to 50 mm covered on the polyamide hot melt adhesive layer 3;
在所述聚酰胺隔热层4上覆盖的聚丙烯共聚物热熔胶层I 5(第二胶粘层)；a polypropylene copolymer hot melt adhesive layer I 5 (second adhesive layer) covered on the polyamide heat insulation layer 4;
在所述聚丙烯共聚物热熔胶层I 5上覆盖的导热系数＜0.14W/mK、厚度为30～50mm的发泡聚丙烯层6(中间层)；a foamed polypropylene layer 6 (intermediate layer) having a thermal conductivity of <0.14 W/mK and a thickness of 30 to 50 mm covered on the polypropylene copolymer hot melt adhesive layer I 5;
在所述发泡聚丙烯层6上覆盖的聚丙烯共聚物热熔胶层II 7(第三胶粘层)；a polypropylene copolymer hot melt adhesive layer II 7 (third adhesive layer) covered on the foamed polypropylene layer 6;
在所述聚丙烯共聚物热熔胶层II 7上覆盖的厚度为50～200μm的聚偏二氯乙烯隔离层8(外层)；a polyvinylidene chloride separator 8 (outer layer) having a thickness of 50 to 200 μm covered on the polypropylene copolymer hot melt adhesive layer II 7;
在所述聚偏二氯乙烯隔离层8上覆盖的聚丙烯共聚物热熔胶层III 9(第四胶粘层)；a polypropylene copolymer hot melt adhesive layer III 9 (fourth adhesive layer) covered on the polyvinylidene chloride separator 8;
在所述聚丙烯共聚物热熔胶层III 9上覆盖的厚度为3～5mm的硬质聚丙烯防腐层10(最外层)。A rigid polypropylene anticorrosive layer 10 (outermost layer) having a thickness of 3 to 5 mm covered on the polypropylene copolymer hot melt adhesive layer III 9 .
所述聚酰胺热熔胶层3以及聚丙烯共聚物热熔胶层I 5、聚丙烯共聚物热熔胶层II 7和聚丙烯共聚物热熔胶层III 9的厚度为50～200μm。The polyamide hot melt adhesive layer 3 and the polypropylene copolymer hot melt adhesive layer I 5 , the polypropylene copolymer hot melt adhesive layer II 7 and the polypropylene copolymer hot melt adhesive layer III 9 have a thickness of 50 to 200 μm.
所述酚醛环氧粉末涂料2采用佐敦公司生产的、牌号为EP-F 2004的酚醛环氧粉末涂料。The phenolic epoxy powder coating 2 is a phenolic epoxy powder coating manufactured by Jotun Corporation under the designation EP-F 2004.
所述聚酰胺隔热层4采用日本三菱公司生产的、牌号为1010C2的聚酰胺。 The polyamide heat insulating layer 4 is a polyamide manufactured by Mitsubishi Corporation of Japan under the designation 1010C2.
所述发泡聚丙烯层6采用巴斯夫公司生产的、牌号为Neopolen KT200的发泡聚丙烯。The foamed polypropylene layer 6 was made of expanded polypropylene of the type Neopolen KT200 manufactured by BASF Corporation.
所述聚偏二氯乙烯隔离层8采用阿克玛公司生产的、牌号为Kynar 740的聚偏二氯乙烯。The polyvinylidene chloride separator 8 is made of polyvinylidene chloride manufactured by Arkema under the designation Kynar 740.
所述硬质聚丙烯防腐层10采用上海海隆赛能新材料有限公司生产的、牌号为SN-103的聚丙烯防腐料。The rigid polypropylene anticorrosive layer 10 is made of polypropylene anticorrosive material of the brand SN-103 produced by Shanghai Hailong Saineng New Material Co., Ltd.
所述聚酰胺热熔胶层3采用汉高公司生产的、牌号为Macromelt 6832S的聚酰胺热熔胶。The polyamide hot melt adhesive layer 3 is made of a polyamide hot melt adhesive manufactured by Henkel under the trade name of Macromelt 6832S.
所述聚丙烯共聚物热熔胶层I 5(包括聚丙烯共聚物热熔胶层II 7、聚丙烯共聚物热熔胶层III 9)采用上海海隆赛能新材料有限公司生产的、牌号为SN-104的聚丙烯共聚物热熔胶。The polypropylene copolymer hot melt adhesive layer I 5 (including the polypropylene copolymer hot melt adhesive layer II 7 and the polypropylene copolymer hot melt adhesive layer III 9) is produced by Shanghai Hailong Saineng New Material Co., Ltd., and the grade is SN-104 polypropylene copolymer hot melt adhesive.
本发明用于深海钢质输送管防腐保温的多层体系的制备工艺流程如下：The preparation process of the multi-layer system for anticorrosion and heat preservation of deep sea steel conveying pipe is as follows:
将钢质管道1上传送带-→对钢质管道1表面进行处理-→中频加热-→在钢质管道1表面喷涂酚醛环氧粉末涂料2-→将聚酰胺热熔胶层3挤出包覆在酚醛环氧粉末涂料层2外-→将聚酰胺隔热层4挤出继续包覆-→将聚丙烯共聚物热熔胶层I 5挤出继续包覆-→将发泡聚丙烯层6挤出继续包覆-→将聚丙烯共聚物热熔胶层II 7、聚偏二氯乙烯隔离层8、聚丙烯共聚物热熔胶层III 9多层共同挤出继续包覆-→最后，将硬质聚丙烯防腐层10挤出继续包覆-→包覆后的钢质管道1成品下传送带-→成品冷却-→产品检验-→合格产品出厂。Transfer the steel pipe 1 on the conveyor belt - → to the surface of the steel pipe 1 - → medium frequency heating - → spray the phenolic epoxy powder coating on the surface of the steel pipe 1 - → extrude the polyamide hot melt adhesive layer 3 Outside the phenolic epoxy powder coating layer 2 - → extrusion of the polyamide thermal insulation layer 4 to continue coating - → extrusion of the polypropylene copolymer hot melt adhesive layer I 5 to continue coating - → foaming polypropylene layer 6 Extrusion continues to coat -→ Polypropylene copolymer hot melt adhesive layer II 7, polyvinylidene chloride separator 8, polypropylene copolymer hot melt adhesive layer III 9 co-extruded and further coated - → Finally, Extrusion of the rigid polypropylene anticorrosive layer 10 to continue coating - → coated steel pipe 1 finished conveyor belt - → finished product cooling - → product inspection - → qualified products are shipped.
本发明用于深海钢质输送管防腐保温的多层体系与现有防腐保温涂层相比，可以输送较高温度的介质而且在长距离输送过程中能保证输送介质的温度，这样，石油中所含有的蜡就不会析出，能保持输送管道的畅通。The multi-layer system for anti-corrosion and heat preservation of deep-sea steel conveying pipe can transport higher temperature medium and ensure the temperature of conveying medium during long-distance transportation, so that oil is in the oil. The wax contained will not precipitate and will keep the conveying pipe clear.
以上所述仅是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员，在不脱离本发明组份的重量百分比范围的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为本发明的保护范围。 The above description is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make several improvements and refinements without departing from the weight percentage of the components of the present invention. And retouching should also be regarded as the scope of protection of the present invention.

Claims (7)

  1. 一种用于深海钢质输送管防腐保温的多层体系，其特征在于，至少由五层结构构成：A multi-layer system for anti-corrosion insulation of deep-sea steel conveying pipes, characterized in that it is composed of at least five layers:
    在钢质管道(1)表面喷涂的酚醛环氧粉末涂料(2)，所述酚醛环氧粉末涂料(2)的厚度为50～200μm；a phenolic epoxy powder coating (2) sprayed on the surface of the steel pipe (1), the phenolic epoxy powder coating (2) having a thickness of 50 to 200 μm;
    在所述酚醛环氧粉末涂料(2)上覆盖聚酰胺隔热层(4)，所述聚酰胺隔热层(4)的厚度为10～50mm；The phenolic epoxy powder coating (2) is covered with a polyamide thermal insulation layer (4), the polyamide thermal insulation layer (4) has a thickness of 10 to 50 mm;
    在所述聚酰胺隔热层(4)上覆盖发泡聚丙烯层(6)，所述发泡聚丙烯层(6)的厚度为30～50mm；The polyamide thermal insulation layer (4) is covered with a foamed polypropylene layer (6), the foamed polypropylene layer (6) has a thickness of 30 ~ 50mm;
    在所述发泡聚丙烯层(6)上覆盖聚偏二氯乙烯隔离层(8)，所述聚偏二氯乙烯隔离层(8)的厚度为50～200μm；The foamed polypropylene layer (6) is covered with a polyvinylidene chloride separator (8), the polyvinylidene chloride separator (8) has a thickness of 50 to 200 μm;
    在所述聚偏二氯乙烯隔离层(8)上覆盖硬质聚丙烯防腐层(10)，所述硬质聚丙烯防腐层(10)的厚度为3～5mm；The polyvinylidene chloride isolation layer (8) is covered with a rigid polypropylene anti-corrosion layer (10), the rigid polypropylene anti-corrosion layer (10) has a thickness of 3 to 5 mm;
    在所述酚醛环氧粉末涂料(2)、聚酰胺隔热层(4)、发泡聚丙烯层(6)、聚偏二氯乙烯隔离层(8)与硬质聚丙烯防腐层(10)的各层之间夹覆有胶粘层。In the phenolic epoxy powder coating (2), the polyamide thermal insulation layer (4), the foamed polypropylene layer (6), the polyvinylidene chloride separation layer (8) and the rigid polypropylene anticorrosive layer (10) The layers are sandwiched between the layers.
  2. 根据权利要求1所述的用于深海钢质输送管防腐保温的多层体系，其特征在于，所述胶粘层为聚酰胺热熔胶层(3)或者聚丙烯共聚物热熔胶层，其厚度为50～200μm。The multi-layer system for anti-corrosion insulation of a deep sea steel conveying pipe according to claim 1, wherein the adhesive layer is a polyamide hot melt adhesive layer (3) or a polypropylene copolymer hot melt adhesive layer. Its thickness is 50 to 200 μm.
  3. 根据权利要求1所述的用于深海钢质输送管防腐保温的多层体系，其特征在于，所述酚醛环氧粉末涂料(2)固化完成后涂层的玻璃化转变温度＞155℃。The multi-layer system for anti-corrosion insulation of a deep sea steel conveying pipe according to claim 1, characterized in that the glass transition temperature of the coating after the curing of the phenolic epoxy powder coating (2) is >155 °C.
  4. 根据权利要求1所述的用于深海钢质输送管防腐保温的多层体系，其特征在于，所述聚酰胺隔热层(4)的熔点＞200℃。The multilayer system for anticorrosive insulation of deep sea steel conveying pipes according to claim 1, characterized in that the polyamide insulating layer (4) has a melting point of >200 °C.
  5. 根据权利要求1所述的用于深海钢质输送管防腐保温的多层体系，其特征在于，所述发泡聚丙烯层(6)的导热系数＜0.14W/mK。The multi-layer system for anti-corrosion insulation of a deep sea steel conveying pipe according to claim 1, wherein the foamed polypropylene layer (6) has a thermal conductivity of <0.14 W/mK.
  6. 一种用于深海钢质输送管防腐保温的多层体系，其特征在于，所述多层体系由九层结构构成：A multi-layer system for anti-corrosion insulation of deep-sea steel conveying pipes, characterized in that the multi-layer system is composed of a nine-layer structure:
    在钢质管道(1)表面喷涂固化完成后涂层的玻璃化转变温度＞155℃、厚度为50～200μm的酚醛环氧粉末涂料(2)；a phenolic epoxy powder coating (2) having a glass transition temperature of >155 ° C and a thickness of 50 to 200 μm after the surface of the steel pipe (1) is sprayed and cured;
    在所述酚醛环氧粉末涂料(2)上覆盖熔点＞200℃的聚酰胺热熔胶层(3)；Coating the phenolic epoxy powder coating (2) with a polyamide hot melt adhesive layer (3) having a melting point of >200 ° C;
    在所述聚酰胺热熔胶层(3)上覆盖熔点＞200℃、厚度为10～50mm的聚酰胺隔热层(4)；The polyamide hot melt adhesive layer (3) is covered with a polyamide thermal insulation layer (4) having a melting point of >200 ° C and a thickness of 10 to 50 mm;
    在所述聚酰胺隔热层(4)上覆盖聚丙烯共聚物热熔胶层I(5)；The polypropylene thermal insulation layer (4) is covered with a polypropylene copolymer hot melt adhesive layer I (5);
    在所述聚丙烯共聚物热熔胶层I(5)上覆盖导热系数＜0.14W/mK、厚度为30～50mm的发泡聚丙烯层(6)；The polypropylene copolymer hot melt adhesive layer I (5) is covered with a thermal conductivity of <0.14W / mK, a thickness of 30 ~ 50mm foamed polypropylene layer (6);
    在所述发泡聚丙烯层(6)上覆盖聚丙烯共聚物热熔胶层II(7)；Covering the foamed polypropylene layer (6) with a polypropylene copolymer hot melt adhesive layer II (7);
    在所述聚丙烯共聚物热熔胶层II(7)上覆盖厚度为50～200μm的聚偏二氯乙烯隔离层(8)； The polypropylene copolymer hot melt adhesive layer II (7) is covered with a thickness of 50 ~ 200 μm polyvinylidene chloride isolation layer (8);
    在所述聚偏二氯乙烯隔离层(8)上覆盖聚丙烯共聚物热熔胶层III(9)；Covering the polyvinylidene chloride separator (8) with a polypropylene copolymer hot melt adhesive layer III (9);
    在所述聚丙烯共聚物热熔胶层III(9)上覆盖厚度为3～5mm的硬质聚丙烯防腐层(10)。A rigid polypropylene anticorrosive layer (10) having a thickness of 3 to 5 mm is coated on the polypropylene copolymer hot melt adhesive layer III (9).
  7. 根据权利要求6所述的用于深海钢质输送管防腐保温的多层体系，其特征在于，所述胶粘层——聚酰胺热熔胶层(3)以及聚丙烯共聚物热熔胶层I(5)、聚丙烯共聚物热熔胶层II(7)和聚丙烯共聚物热熔胶层III(9)的厚度为50～200μm。 The multi-layer system for anti-corrosion insulation of a deep sea steel conveying pipe according to claim 6, wherein the adhesive layer - a polyamide hot melt adhesive layer (3) and a polypropylene copolymer hot melt adhesive layer I (5), polypropylene copolymer hot melt adhesive layer II (7) and polypropylene copolymer hot melt adhesive layer III (9) have a thickness of 50 to 200 μm.
PCT/CN2015/078297 2014-12-09 2015-05-05 Anticorrosion insulation multilayer system for deep-sea steel delivery pipes WO2016090835A1 (en)

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