WO2014059782A1 - 一种二层结构阻氧塑料管 - Google Patents

一种二层结构阻氧塑料管 Download PDF

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Publication number
WO2014059782A1
WO2014059782A1 PCT/CN2013/074930 CN2013074930W WO2014059782A1 WO 2014059782 A1 WO2014059782 A1 WO 2014059782A1 CN 2013074930 W CN2013074930 W CN 2013074930W WO 2014059782 A1 WO2014059782 A1 WO 2014059782A1
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Prior art keywords
layer
oxygen barrier
tube
lcp
pipe
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PCT/CN2013/074930
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English (en)
French (fr)
Inventor
于东明
陈立楠
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浙江曼瑞德舒适系统有限公司
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Priority to DE201311003017 priority Critical patent/DE112013003017T5/de
Publication of WO2014059782A1 publication Critical patent/WO2014059782A1/zh

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    • 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
    • F16L9/00—Rigid pipes
    • F16L9/14—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups
    • F16L9/147—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups comprising only layers of metal and plastics with or without reinforcement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B1/00—Layered products having a non-planar shape
    • B32B1/08—Tubular products
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/724—Permeability to gases, adsorption
    • B32B2307/7242—Non-permeable
    • B32B2307/7244—Oxygen barrier
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2597/00—Tubular articles, e.g. hoses, pipes
    • 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
    • F16L11/00—Hoses, i.e. flexible pipes
    • F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
    • F16L2011/047—Hoses, i.e. flexible pipes made of rubber or flexible plastics with a diffusion barrier layer

Definitions

  • the utility model relates to an oxygen barrier plastic pipe, in particular to a two-layer structure oxygen barrier plastic pipe. Background technique
  • the oxygen permeability of most plastic pipes is relatively high.
  • the disadvantage is that oxygen will permeate through the pipe wall and dissolve into the medium transported in the pipe.
  • the presence of oxygen in the medium will be the metal pipe in the system. Accelerated oxidation corrosion of metal equipment, etc., increases the safety hazard of the system, shortens the service life of the system, pollutes the transported medium, and provides twinning conditions for microorganisms in the medium.
  • the higher the temperature of the medium the more serious the drawback is. Therefore, the oxygen permeability of plastic pipes used in hot water systems is clearly defined in standards such as D1N476 K CJ/T175-2002.
  • the usual practice is to coat the outer wall of the plastic pipe with an oxygen barrier layer for the material with good oxygen barrier property.
  • the metal material is a commonly used oxygen barrier material
  • the aluminum-plastic composite pipe is A typical oxygen barrier plastic tube made of metal aluminum foil as an oxygen barrier material.
  • Aluminum foil is brittle and its wide application is limited for piping systems where it is desirable or required to bend. Therefore, the commonly used oxygen barrier plastic pipe is mainly for the oxygen barrier plastic pipe of the EV0H resin barrier layer.
  • Aluminum foil and EV0H are not compatible with the wrapped pipe, and the outer wall of the pipe and the oxygen barrier layer must be bonded by an adhesive. Therefore, the structure of the oxygen barrier plastic tube is at least three layers, and the outer layer to the inner layer are respectively EV0H (or aluminum foil) oxygen barrier layer / adhesive layer / plastic tube layer.
  • the plastic pipes for hot and cold water systems are mostly polyolefin (P0) pipes, including polyethylene, polypropylene, polybutene and copolymers thereof, such as PEXa pipe, PEXb pipe, PEXc pipe, PERT pipe, PB. — 1 tube, PBR tube, PPH tube, PPB tube, PPR tube, PPRCT tube, etc. They are designed for a service life of 50 years.
  • the aluminum foil has poor corrosion resistance and short service life. It must be protected against exposed aluminum foil, so the aluminum-plastic composite pipe with three-layer structure does not exist.
  • the water resistance of EV0H is not good, the oxygen permeability is greatly affected by the environmental humidity, and the EV0H strength is not high, the cladding layer is very thin, and the anti-wear ability is weak. Once scratched, the damage will completely lose oxygen barrier capacity.
  • people have invented a five-layer structure oxygen barrier plastic tube, the structure from the outer layer to the inner layer is P0 resin protective layer / adhesive layer / EV0H (or aluminum foil) oxygen barrier layer / adhesive layer / plastic pipe layer .
  • the commonly used high barrier resin and its barrier performance sequence are: PVAc>EV0H>PVDc.
  • PVDc is difficult to process, and the dosage is less and less;
  • PVAc is a water-soluble polymer, which is difficult to process and apply.
  • the modified PVAc has made breakthroughs, and the price is low, and the dosage is getting larger and larger;
  • EV0H has good processing performance and the largest amount, but its Poor water resistance, it must be placed in a waterproof interlayer.
  • LCP Liquid Crystal Resin
  • processing temperature is as high as 300 °C or higher, its density is high and expensive, and it is rarely used as a barrier material.
  • LCP The main performance of LCP is very good: (1) high strength, high modulus, excellent friction, excellent wearability, negligible creep; (2) outstanding heat resistance, its heat distortion temperature is above 30CTC
  • Some grades of LCP resin can be used continuously at -50 ° C ⁇ 240 ° C, still have excellent impact toughness and dimensional stability; (3) excellent flame retardancy, LCP has self-extinguishing properties to the flame; 4) Very small coefficient of linear expansion, high dimensional stability and dimensional accuracy; (5) Good weather resistance, radiation resistance, transparency to microwaves; (6) Excellent electrical properties; (7) Prominent chemical resistance (8) Excellent molding processability; (9) LCP's oxygen barrier is almost synthetic tree The highest fat is about 2 times to 10 times that of EV0H.
  • the thickness of LCP is only 1 of EV0H. It can be around /10, and even if the relative humidity reaches 100%, its oxygen barrier property remains unchanged.
  • LCP has been used in microwave ovens to withstand high and low temperatures; LCP can also be used as printed circuit boards, satellite electronic components, jet engine parts; for electrical and electronic machinery parts or components; In the medical field.
  • LCP can be used as a package material for integrated circuit packaging materials instead of epoxy resin; it can be used as a fiber-optic cable joint sheath and high-strength components; instead of ceramics, it can be used as a filling material in chemical separation towers.
  • LCP can also be blended with polysulfone, PBT, polyamide and other plastics to form alloys. After molding, the mechanical strength is high. It can replace plastics such as glass fiber reinforced polysulfone, which can improve mechanical strength and improve. Use strength and chemical stability. LCP is currently being studied for panels external to the spacecraft, brake systems for exterior vehicles, and the like. However, the processing temperature of LCP is very different from the processing temperature of plastic tubes commonly used in hot and cold water installations. The thin molded products are brittle, and they have poor compatibility with most P0 resins. They are directly coated on the outer wall of plastic pipes. The oxygen barrier layer has poor adhesion and must be bonded by an adhesive layer. Summary of the invention
  • the solution adopted by the utility model is: a two-layer structure oxygen barrier plastic pipe, from the outer layer to the inner layer respectively, PO ⁇ LCP alloy oxygen barrier layer and PO plastic pipe, PO plastic pipe
  • the outer wall directly coats the oxygen barrier layer of the PO ⁇ LCP alloy.
  • the PO ⁇ LCP alloy oxygen barrier layer comprises a PE ⁇ LCP alloy oxygen barrier layer and a PP ⁇ LCP alloy oxygen barrier layer.
  • the PO ⁇ LCP alloy oxygen barrier layer is made of a polyolefin resin and a thermotropic liquid crystal resin by molecular compounding and microfiber orientation.
  • the molecular composite method is used to uniformly disperse LCP in a flexible polymer to form nano-scale LCP microfibers in situ, which is smaller in size than general nanocomposites, and the degree of dispersion is close to the molecular level, which can greatly improve the flexible polymer resin.
  • PO plastic pipes include PEXa pipe, PEXb pipe, PEXc pipe, PB pipe, PBR pipe, PERT pipe, PPB pipe, PPR pipe and PPRCT pipe.
  • the positive effect of the utility model is: Since the outer wall of the pipe directly encloses the oxygen barrier layer, the adhesive layer is not required, and the waterproof and scratch-resistant protective layer is not required.
  • the price of PO ⁇ LCP alloy is much lower than that of LCP and EVOH.
  • the structure is simple and the manufacturing cost is low.
  • PO ⁇ LCP further increases the affinity between it and PO resin material. Therefore, after coating with PO pipe, it is not only a barrier layer with good water resistance and scratch resistance, but also can enhance the pipe. Mechanical properties, improved heat resistance, creep resistance, weather resistance, flame retardancy, impact toughness, etc.
  • the composite tube of composite PO ⁇ LCP has better comprehensive performance than the composite EV0H five-layer structure damper, and the manufacturing cost is lower than that of the composite EV0H three-layer structure damper.
  • FIG. 1 is a schematic structural view of a two-layer structure oxygen barrier plastic tube.
  • Example 1 Referring to Figure 1, a two-layer structure oxygen barrier plastic tube, from the outer layer to the inner layer, respectively, PO ⁇ LCP alloy oxygen barrier layer 2 and PO plastic pipe 1, PO plastic pipe 1 outer wall directly coated with PO ⁇ LCP alloy oxygen barrier Layer 2.
  • Example 2. The utility model relates to a two-layer structure oxygen-blocking plastic pipe, which is a PE ⁇ LCP alloy oxygen barrier layer and a PE plastic pipe from the outer layer to the inner layer respectively, and the outer wall of the PE plastic pipe is directly coated with the PE ⁇ LCP alloy oxygen barrier layer.
  • Example 3 The utility model relates to a two-layer structure oxygen-barrier plastic pipe, which is a PP ⁇ LCP alloy oxygen barrier layer and a PP plastic pipe from the outer layer to the inner layer respectively, and the outer wall of the PP plastic pipe is directly coated with the PP ⁇ LCP alloy oxygen barrier layer.
  • Example 4 A two-layer structure oxygen barrier plastic tube, from the outer layer to the inner layer respectively, is a PE ⁇ LCP alloy oxygen barrier layer and a PEXb tube, and the outer wall of the PEXb tube directly coats the PE ⁇ LCP alloy oxygen barrier layer.
  • Example 5 A two-layer structure oxygen barrier plastic tube, from the outer layer to the inner layer respectively, is a PE ⁇ LCP alloy oxygen barrier layer and a PEXc tube, and the outer wall of the PEXc tube directly coats the PE ⁇ LCP alloy oxygen barrier layer.
  • Example 6 A two-layer structure oxygen barrier plastic tube, from the outer layer to the inner layer respectively, is a PE ⁇ LCP alloy oxygen barrier layer and a PEXa tube, and the outer wall of the PEXa tube directly coats the PE ⁇ LCP alloy oxygen barrier layer.
  • Example 7 A two-layer structure oxygen barrier plastic tube, from the outer layer to the inner layer respectively, is a PE ⁇ LCP alloy oxygen barrier layer and a PERT tube, and the outer wall of the PERT tube is directly coated with a PE ⁇ LCP alloy oxygen barrier layer.
  • Example 8 A two-layer structure oxygen barrier plastic tube, from the outer layer to the inner layer respectively, is a PP ⁇ LCP alloy oxygen barrier layer and a PB tube, and the outer wall of the PB tube is directly coated with a PP ⁇ LCP alloy oxygen barrier layer.
  • Example 9 A two-layer structure oxygen barrier plastic tube, from the outer layer to the inner layer respectively, is a PP ⁇ LCP alloy oxygen barrier layer and a PBR tube, and the outer wall of the PBR tube is directly coated with a PP ⁇ LCP alloy oxygen barrier layer.
  • Example 10 A two-layer structure oxygen barrier plastic tube, from the outer layer to the inner layer respectively, is a PP ⁇ LCP alloy oxygen barrier layer and a PPR tube, and the outer wall of the PPR tube is directly coated with a PP ⁇ LCP alloy oxygen barrier layer.
  • Example 11 A two-layer structure oxygen barrier plastic tube, from the outer layer to the inner layer respectively, is a PP ⁇ LCP alloy oxygen barrier layer and a PPRCT tube, and the outer wall of the PPRCT tube is directly coated with a PP ⁇ LCP alloy oxygen barrier layer.
  • Example 12 A two-layer structure oxygen barrier plastic tube, from the outer layer to the inner layer respectively, is a PP ⁇ LCP alloy oxygen barrier layer and a PPB tube, and the outer wall of the PPB tube is directly coated with a PP ⁇ LCP alloy oxygen barrier layer.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Laminated Bodies (AREA)

Abstract

一种二层结构阻氧塑料管，从外层到里层分别为PO∽LCP合金阻氧层（2）和PO塑料管材（1），PO塑料管材（1）外壁直接包覆PO∽LCP合金阻氧层（2）。由于管材外壁直接包覆阻氧层，因此不需粘胶剂层，亦不需防水防刮擦的保护层。这种塑料管结构简单，制造容易，成本低廉。

Description

一种二层结构阻氧塑料管 技术领域
[0001] 本实用新型涉及一种阻氧塑料管， 特别涉及一种二层结构阻氧塑料管。 背景技术
[0002] 绝大多数塑料管的透氧率都比较高，带来的弊端是氧气会穿过管壁渗入并溶解到管 中输送的介质中， 介质中氧的存在会对系统中的金属管道、 金属设备等加速氧化腐蚀， 增加 系统的安全隐患， 縮短系统的使用寿命， 会污染被输送介质， 并且为介质中微生物提供孳生 条件等。 介质温度越高， 这一弊端越为严重， 因此对用于热水系统中的塑料管材的透氧率 D1N476 K CJ/T175-2002等标准中都做出了明确规定。
[0003] 为降低塑料管的透氧率，通常的做法是在塑料管材外壁包复一层对氧阻隔性能好的 材料做阻氧层， 金属材料是常用的阻氧材料， 铝塑复合管就是一种典型的以金属铝箔做阻氧 材料的阻氧塑料管。铝箔性脆，对于希望或需要弯曲施工的管道系统，其广泛应用受到限制。 因此， 常用阻氧塑料管主要为管壁外包复 EV0H树脂阻隔层的阻氧塑料管。 铝箔和 EV0H与被 包复的管材相容性不好， 管外壁与阻氧层之间还必须靠粘胶剂粘合。 因此这种阻氧塑料管的 结构至少是三层结构， 从外层到里层分别为 EV0H (或铝箔） 阻氧层 /粘胶剂层 /塑料管材层。
[0004] 一般冷热水系统用塑料管材多为聚烯烃（P0)管材， 包括聚乙烯、聚丙烯、 聚丁烯 及它们的共聚物， 如 PEXa管、 PEXb管、 PEXc管、 PERT管、 PB— 1管、 PBR管、 PPH管、 PPB 管、 PPR管、 PPRCT管等。 它们的设计使用寿命一般为 50年， 铝箔耐腐蚀性差， 使用寿命很 短， 对曝露的铝箔必须加以保护， 所以三层结构的铝塑复合管并不存在。 EV0H的耐水性能不 好， 透氧率受环境湿度影响很大， 并且 EV0H强度不高， 包复层又很薄， 抗磨损能力较弱， 一 旦受到刮擦， 破损处將完全失去阻氧能力， 为此， 人们发明了五层结构阻氧塑料管， 其结构 从外层到里层为 P0树脂保护层 /粘胶剂层 /EV0H (或铝箔） 阻氧层 /粘胶剂层 /塑料管材层。
[0005] 目前市场上常见的阻氧塑料管， 几乎全部为冷热水系统用塑料管， 如复合 EV0H的 三层结构的 PEX管、 PERT管， 复合 EV0H的五层结构的 PB-1管、 PEXa管， 及铝塑复合管等。 三层结构阻氧塑料管之阻氧层得不到保护， 五层结构阻氧塑料管结构复杂， 两者制造成本均 较高， 普及应用受到限制， 只在一些高端应用场合少量应用。 因此， 开发结构简单， 成本低 廉， 阻氧性能优秀的新型阻氧塑料管势在必行， 其中阻氧材料的研发首当其冲。
[0006] 常用高阻隔树脂及其阻隔性能顺序为： PVAc〉EV0H〉PVDc。 PVDc加工困难， 用量 越来越少了； PVAc为水溶性聚合物， 加工和应用困难， 近年改性 PVAc取得突破， 且价格低 廉， 用量越来越大； EV0H加工性能好， 用量最大， 但其耐水性能差， 必须将其置于防水夹层 中应用。 LCP (液晶树脂）的阻隔性能高于 PVAc ,是 EVOH的数倍，但因其加工温度高达 300 °C 以上， 且其密度大， 价格昂贵， 极少用其做阻隔材料。 LCP的主要性能十分优秀： （1 ) 高强 度、 高模量、 优良的摩擦性、 优良的磨耗性， 蠕变性可忽略不计； （2 )突出的耐热性， 其热 变形温度高达 30CTC以上， 有的牌号 LCP树脂可在 -50°C〜240°C下连续使用， 仍有优良的冲 击韧性和尺寸稳定性； （3 )极佳的阻燃性， LCP对火焰具有自熄性； （4)极小的线胀系数， 很高的尺寸稳定性和尺寸精度； （5 ) 耐候性、 耐辐射性好， 对微波透明； （6 ) 优良的电性 能； （7 ) 突出的耐化学腐蚀性； （8 )优良的成型加工性； （9) LCP的阻氧性几乎是合成树 脂中最高的， 约为 EV0H的 2倍〜 10倍， 在环境湿度较高时， 其优势尤为突出， 在相同的阻 氧性能条件 (相对湿度 90%)下， LCP的厚度仅为 EV0H的 1/10左右即可， 即使是相对湿度达到 100%， 其阻氧性仍保持不变。
[0007] 由于液晶聚合物在热、电、机械、化学方面优良的综合性能越来越受到各国的重视， 其产品被引入到各个高技术领域的应用中。被誉为超级工程塑料， LCP已经用于微波炉容器， 可以耐高低温； LCP还可以做印刷电路板、 人造卫星电子部件、 喷气发动机零件； 用于电子 电气和汽车机械零件或部件； 还可以用于医疗方面。 LCP可以加入高填充剂作为集成电路封 装材料， 以代替环氧树脂作线圈骨架的封装材料； 作光纤电缆接头护套和高强度元件； 代替 陶瓷作化工用分离塔中的填充材料等。 LCP还可以与聚砜、 PBT、聚酰胺等塑料共混制成合金， 制件成型后其机械强度高， 用以代替玻璃纤维增强的聚砜等塑料， 既可提高机械强度性能， 又可提高使用强度及化学稳定性等。 目前正在研究将 LCP用于宇航器外部的面板、 汽车外装 的制动系统等。 但是 LCP的加工温度与冷热水装置中常用塑料管的加工温度相差悬殊， 薄型 成型品存在脆性，且其与大多数 P0树脂相容性欠佳，用其直接包覆在塑料管外壁上做阻氧层， 其附着力较差， 也须有粘胶剂层粘合。 发明内容
[0008] 本实用新型的目的在于提供一种二层结构阻氧塑料管。
[0009] 为达到上述目的， 本实用新型采取的解决方案是： 一种二层结构阻氧塑料管， 从外 层到里层分别为 PO^LCP合金阻氧层和 PO塑料管材， PO塑料管材外壁直接包覆 PO^LCP 合金阻氧层。
[0010] PO^LCP合金阻氧层包括 PE^LCP合金阻氧层和 PP^LCP合金阻氧层。 PO^LCP 合金阻氧层由聚烯烃树脂与热致液晶树脂经分子复合和微纤取向制成。 利用分子复合法， 将 LCP均匀地分散于柔性聚合物中，原位生成纳米级的 LCP微纤，其尺寸比一般纳米复合材料 更小， 分散程度接近分子水平， 可大幅度提高柔性高分子树脂的拉伸强度、 弯曲模量、 耐热 性、 阻隔性等。 当柔性聚合物与塑料管材材料相同或者相近时， 可有效地提高阻氧层与塑料 管间的亲和力， 层间省却粘胶剂层成为可能。 并且合金的加工温度低于纯 LCP的加工温度， 有助于提高二层结构阻氧塑料管制造工艺的可控程度。 PO塑料管材包括 PEXa管材、 PEXb 管材、 PEXc管材、 PB管材、 PBR管材、 PERT管材、 PPB管材、 PPR管材和 PPRCT管材等。
[0011] 本实用新型的积极效果是： 由于管材外壁直接包复阻氧层， 不需粘胶剂层， 亦不需 防水防刮擦的保护层。 PO^LCP合金的价格大大低于 LCP和 EVOH.。 结构简单、 制造成本 低廉。 PO^LCP更增加了其与 PO树脂材间的親合力， 因此其与 PO管材包覆后， 不仅是一 层耐水性、 防刮擦性很好的阻隔层， 并且同时也可起到增强管材力学性能， 提高耐热性能、 抗蠕变能力、 耐候性能、 阻燃性、 冲击韧性等。 复合 PO^LCP的二层结构的塑料管， 其综 合性能优于复合 EV0H的五层结构阻氧管， 制造成本低于复合 EV0H的三层结构阻氧管。 附图说明
[0012] 图 1是二层结构阻氧塑料管的结构示意图。
[0013] 图中： 1、 PO塑料管材， 2、 PO^LCP合金阻氧层。 具体实施方式
[0014] 实施例 1。 参见图 1， 一种二层结构阻氧塑料管， 从外层到里层分别为 PO^LCP合 金阻氧层 2和 PO塑料管材 1， PO塑料管材 1外壁直接包覆 PO^LCP合金阻氧层 2。 [0015] 实施例 2。一种二层结构阻氧塑料管， 从外层到里层分别为 PE^LCP合金阻氧层和 PE塑料管材， PE塑料管材外壁直接包覆 PE^LCP合金阻氧层。
[0016] 实施例 3。一种二层结构阻氧塑料管， 从外层到里层分别为 PP^LCP合金阻氧层和 PP塑料管材， PP塑料管材外壁直接包覆 PP^LCP合金阻氧层。
[0017] 实施例 4。一种二层结构阻氧塑料管， 从外层到里层分别为 PE^LCP合金阻氧层和 PEXb管， PEXb管外壁直接包覆 PE^LCP合金阻氧层。
[0018] 实施例 5。一种二层结构阻氧塑料管， 从外层到里层分别为 PE^LCP合金阻氧层和 PEXc管， PEXc管外壁直接包覆 PE^LCP合金阻氧层。
[0019] 实施例 6。一种二层结构阻氧塑料管， 从外层到里层分别为 PE^LCP合金阻氧层和 PEXa管， PEXa管外壁直接包覆 PE^LCP合金阻氧层。
[0020] 实施例 7。一种二层结构阻氧塑料管， 从外层到里层分别为 PE^LCP合金阻氧层和 PERT管， PERT管外壁直接包覆 PE^LCP合金阻氧层。
[0021] 实施例 8。一种二层结构阻氧塑料管， 从外层到里层分别为 PP^LCP合金阻氧层和 PB管， PB管外壁直接包覆 PP^LCP合金阻氧层。
[0022] 实施例 9。一种二层结构阻氧塑料管， 从外层到里层分别为 PP^LCP合金阻氧层和 PBR管， PBR管外壁直接包覆 PP^LCP合金阻氧层。
[0023] 实施例 10。 一种二层结构阻氧塑料管， 从外层到里层分别为 PP^LCP合金阻氧层 和 PPR管， PPR管外壁直接包覆 PP^LCP合金阻氧层。
[0024] 实施例 11。 一种二层结构阻氧塑料管， 从外层到里层分别为 PP^LCP合金阻氧层 和 PPRCT管， PPRCT管外壁直接包覆 PP^LCP合金阻氧层。
[0025] 实施例 12。 一种二层结构阻氧塑料管， 从外层到里层分别为 PP^LCP合金阻氧层 和 PPB管， PPB管外壁直接包覆 PP^LCP合金阻氧层。

Claims

权 利 要 求 书
1.一种二层结构阻氧塑料管，其特征是：从外层到里层分别为 PO^LCP合金阻氧层（2) 和 PO塑料管材 （1 )， PO塑料管材 （1 ) 外壁直接包覆 PO^LCP合金阻氧层 （2)。
2.根据权利要求 1所述的一种二层结构阻氧塑料管， 其特征是： 所述的 PO塑料管材包 括 PEXa管材、 PEXb管材、 PEXc管材、 PB管材、 PBR管材、 PERT管材、 PPB管材、 PPR 管材和 PPRCT管材。
3.根据权利要求 1所述的一种二层结构阻氧塑料管， 其特征是： 所述的 PO^LCP合金阻 氧层包括 PE^LCP合金阻氧层和 PP^LCP合金阻氧层。
4.根据权利要求 2或 3所述的一种二层结构阻氧塑料管， 其特征是： 从外层到里层分别 为 PE^LCP合金阻氧层和 PEXb管， PEXb管外壁直接包覆 PE^LCP合金阻氧层。
5.根据权利要求 2或 3所述的一种二层结构阻氧塑料管， 其特征是： 从外层到里层分别 为 PE^LCP合金阻氧层和 PEXc管， PEXc管外壁直接包覆 PE^LCP合金阻氧层。
6.根据权利要求 2或 3所述的一种二层结构阻氧塑料管， 其特征是： 从外层到里层分别 为 PE^LCP合金阻氧层和 PEXa管， PEXa管外壁直接包覆 PE^LCP合金阻氧层。
7.根据权利要求 2或 3所述的一种二层结构阻氧塑料管， 其特征是： 从外层到里层分别 为 PE^LCP合金阻氧层和 PERT管， PERT管外壁直接包覆 PE^LCP合金阻氧层。
8.根据权利要求 2或 3所述的一种二层结构阻氧塑料管， 其特征是： 从外层到里层分别 为 PP^LCP合金阻氧层和 PB管， PB管外壁直接包覆 PP^LCP合金阻氧层。
9.根据权利要求 2或 3所述的一种二层结构阻氧塑料管， 其特征是： 从外层到里层分别 为 PP^LCP合金阻氧层和 PBR管， PBR管外壁直接包覆 PP^LCP合金阻氧层。
10.根据权利要求 2或 3所述的一种二层结构阻氧塑料管， 其特征是： 从外层到里层分别 为 PP^LCP合金阻氧层和 PPR管， PPR管外壁直接包覆 PP^LCP合金阻氧层。
11.根据权利要求 2或 33所述的一种二层结构阻氧塑料管， 其特征是： 从外层到里层分 别为 PP^LCP合金阻氧层和 PPRCT管， PPRCT管外壁直接包覆 PP^LCP合金阻氧层。
12.根据权利要求 2或 3所述的一种二层结构阻氧塑料管， 其特征是： 从外层到里层分别 为 PP^LCP合金阻氧层和 PPB管， PPB管外壁直接包覆 PP^LCP合金阻氧层。
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