WO2015067164A1 - 热固型竹砂复合压力管 - Google Patents

热固型竹砂复合压力管 Download PDF

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Publication number
WO2015067164A1
WO2015067164A1 PCT/CN2014/090251 CN2014090251W WO2015067164A1 WO 2015067164 A1 WO2015067164 A1 WO 2015067164A1 CN 2014090251 W CN2014090251 W CN 2014090251W WO 2015067164 A1 WO2015067164 A1 WO 2015067164A1
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WO
WIPO (PCT)
Prior art keywords
layer
bamboo
sand
pressure pipe
reinforcing layer
Prior art date
Application number
PCT/CN2014/090251
Other languages
English (en)
French (fr)
Inventor
朱鑫
叶柃
杨会清
Original Assignee
浙江鑫宙竹基复合材料科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 浙江鑫宙竹基复合材料科技有限公司 filed Critical 浙江鑫宙竹基复合材料科技有限公司
Priority to US15/032,264 priority Critical patent/US9903513B2/en
Priority to BR112016009838-2A priority patent/BR112016009838B1/pt
Priority to MX2016005942A priority patent/MX370500B/es
Priority to EP14860861.5A priority patent/EP3067609B1/en
Priority to ES14860861T priority patent/ES2867674T3/es
Priority to JP2016550930A priority patent/JP2016539298A/ja
Priority to RU2016115619A priority patent/RU2650008C2/ru
Priority to CA2927542A priority patent/CA2927542C/en
Publication of WO2015067164A1 publication Critical patent/WO2015067164A1/zh

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Classifications

    • 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
    • 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
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • 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
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/022—Non-woven fabric
    • 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
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/12—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer characterised by the relative arrangement of fibres or filaments of different layers, e.g. the fibres or filaments being parallel or perpendicular to each other
    • 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
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • 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
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • 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
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/02—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising animal or vegetable substances, e.g. cork, bamboo, starch
    • 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
    • F16L9/01—Rigid pipes of wood
    • 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
    • F16L9/16—Rigid pipes wound from sheets or strips, 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
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/02—Composition of the impregnated, bonded or embedded layer
    • 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
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/04—Impregnation, embedding, or binder material
    • B32B2260/046—Synthetic resin
    • 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
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/06—Vegetal fibres
    • B32B2262/062—Cellulose fibres, e.g. cotton
    • B32B2262/065—Lignocellulosic fibres, e.g. jute, sisal, hemp, flax, bamboo
    • 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
    • B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
    • B32B2264/10—Inorganic particles
    • 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
    • B32B2307/726—Permeability to liquids, absorption
    • B32B2307/7265—Non-permeable
    • 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
    • B32B2307/732—Dimensional properties
    • 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
    • B32B2307/752—Corrosion inhibitor
    • 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
    • B32B2410/00—Agriculture-related articles
    • 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

Definitions

  • the utility model relates to a thermosetting bamboo sand composite pressure pipe, which is applied to the fields of agricultural irrigation, water supply and drainage and petrochemical anticorrosion.
  • cement pipes polyvinyl chloride, polyethylene, polypropylene, glass steel pipes (glass fiber reinforced plastic pipes, glass fiber reinforced plastic sand pipes) are commonly used.
  • Traditional pipes such as steel pipes and ductile iron pipes.
  • the cost of the cement pipe is low, but the strength is low, the weight is heavy, the pipe joint is leaky; the PVC, polyethylene, polypropylene pipe is light, smooth and corrosion resistant, but the rigidity and strength are insufficient and the raw materials are petrochemical synthesis.
  • Products; glass steel pipe and glass fiber reinforced plastic sand pipe have the advantages of corrosion resistance, high strength, low fluid resistance and high rigidity.
  • Patent No. 2009201212098 discloses a structure: in the direction of the pipe diameter, from the inside to the outside, the inner lining layer, the reinforcing layer and the outer protective layer are The reinforcing layer is characterized in that the reinforcing layer is a bamboo fiber layer on which a continuous bamboo fiber ribbon is wound on an inner liner layer, the bamboo fiber layer is a bamboo fiber belt loop layer, a bamboo fiber ribbon spiral layer or a combination of the former two, bamboo fiber The number of layers of the layer is two or more.
  • the above-mentioned bamboo composite pipe meets the advanced concepts of energy saving, environmental protection and renewable resources, and the price is lower than other conventional pipes (except cement pipes), but the price is still high in the field of low pressure and high rigidity, especially in the field of agricultural irrigation.
  • the technical problem to be solved by the utility model is to overcome the deficiencies in the prior art and provide a heat-curable bamboo sand composite pressure pipe which is energy-saving and environmentally-friendly, has recyclable production materials, and is particularly inexpensive.
  • thermosetting bamboo sand composite pressure pipe is provided with an inner liner layer, an inner reinforcing layer, a sand rubber layer and an outer reinforcement respectively from the inside to the outside.
  • the layer and the outer protective layer are characterized in that: the inner lining layer and the outer protective layer are respectively provided with an inner reinforcing layer formed by winding bamboo rafts, a thickening layer formed by stirring of ore glue, and bamboo. An outer reinforcing layer that is twisted and twisted.
  • the utility model adopts a multi-layer composite structure, and the inner and outer reinforcing layers adopt environmentally-friendly and recyclable bamboo, and bamboo is a kind of resource which can be quickly regenerated and has environmental protection, and has light weight, high strength, high rigidity, corrosion resistance and low price. And it is widely distributed in China.
  • the thickening layer of sand glue increases the rigidity of the pipe on the one hand, and reduces the amount of bamboo used on the other hand, further reducing the cost of the product.
  • the hardness of the sand rubber thickening layer is high and low.
  • the ore, the ore and the resin are uniformly mixed and then laminated on the outer surface of the inner reinforcing layer, and the thickness of the thick layer of the sand rubber is designed according to different use requirements.
  • the bamboo rafts in the inner reinforcing layer and the outer reinforcing layer according to the present invention have a length of 0.5 m 2 m, a width of 5 mm to 10 mm, and a thickness of 0.3 mm to 1 mm.
  • the bamboo rafts of the above dimensions are difficult to process, the bamboo utilization rate is high, the production cost is lowered, and sufficient adhesion can be ensured in the case of thermal expansion and contraction.
  • the bamboo raft is first wound radially to form a radial layer bonded to the outer surface of the inner lining layer, and then axially wound to form an axial layer bonded in the radial direction.
  • the outer surface of the layer is to optimize the pressure bearing properties of the pipe.
  • the bamboo raft is axially wound to form an axial layer bonded to the outer surface of the sand thickening layer, and then radially wound to form a radial layer bonded to The outer surface of the axial layer.
  • the outer reinforcement layer adopts the first axial and rear radial winding method, which is opposite to the inner reinforcement layer.
  • the bamboo raft is radially wound to form a radial layer bonded to the outer surface of the sand rubber thickening layer.
  • the outer reinforcing layer can also use only the radial winding bamboo raft according to the different use requirements of the pipe, and the cost can be minimized under the premise of ensuring the use strength of the pipe.
  • the inner liner layer of the utility model is made of bamboo fiber non-woven fabric and bamboo knit felt, and has a thickness of 1.2 mm to 2.5 mm.
  • the inner layer of the above material and thickness has the advantages of anti-seepage, anti-corrosion, sanitary and smooth inner wall.
  • other different types of nonwoven fabrics and knitted felts may be employed depending on the transport medium.
  • the outer protective layer of the present invention is coated on the outer surface of the outer reinforcing layer, and has a thickness of 0.5 mm to 1.5 mm.
  • the outer protective layer is made of anti-corrosion and waterproof material. In the case of good external environment, the thickness of the outer protective layer can be thinner, and the thinnest 0.2mm can play a protective role.
  • the inner liner layer, the inner reinforcement layer, the sand rubber thickening layer and the outer reinforcement layer of the utility model are bonded and solidified into one body, thereby ensuring that the product can meet the strength and rigidity required by the design, and is convenient for packaging storage and transportation.
  • the utility model has the following advantages:
  • the utility model is provided with a thick layer of sand rubber in the structural layer, and the ore sand is used to increase the thickness of the pipe, thereby increasing the rigidity of the pipe and reducing the material of the bamboo compound pipe. cost.
  • 1 is a schematic view of the structure of the present invention.
  • the embodiment is applied to the thermosetting bamboo sand composite pressure pipe of DN600, and is mainly applied to the agricultural irrigation main pipe, the municipal engineering water supply and drainage pipe, the sewage treatment gathering pipeline secondary trunk pipe, the petroleum plutonium oil production and the water pipe. , circulating cooling water and other fields.
  • the pipe of the utility model is provided with an inner liner layer 1, an inner reinforcing layer 2, a sand rubber thickening layer 3, an outer reinforcing layer 4 and an outer protective layer 5 from the inside to the outside.
  • the inner lining layer 1, the inner reinforcing layer 2, the sand rubber thickening layer 3 and the outer reinforcing layer 4 are layer-by-layer bonded and solidified into one body, and the outer protective layer 5 is coated on the outer surface of the outer reinforcing layer 4.
  • the specific processing process is as follows:
  • the fresh bamboo stalk is grown 0.5-2 meters, the width is 5mm ⁇ 10mm, and the thickness is 0.3mm ⁇ lmm.
  • a layer of release film is coated on a polished steel or glass steel straight pipe mold having an outer diameter of 600 mm, using a resin excellent in corrosion resistance, bamboo fiber nonwoven fabric and bamboo knitted felt, in a straight pipe mold
  • the inner liner layer 1 having a thickness of 1. 2 mm to 2.5 mm;
  • the bamboo crucible is mounted on the winding machine, and is laid neatly on the inner liner 1 of the straight tube mold by mechanized winding arrangement, and the already-formed tuft is added to the wrapped An amino resin forms the inner reinforcing layer 2.
  • the winding step of the inner reinforcing layer 2 is first radial winding to form a radial layer bonded to the outer surface of the inner liner 1, and then axially wound to form an axial layer bonded to the outer surface of the radial layer.
  • the entire inner reinforcement layer 2 has a thickness of 4mm°
  • the difference is that the outer reinforcing layer 4 in the bamboo raft first axially wound to form an axial layer bonded The outer surface of the sanditious thickening layer 3 is then radially wound to form a radial layer bonded to the outer surface of the axial layer.
  • the outer reinforcing layer 4 has a thickness of 4 mm.
  • This embodiment is applied to the DN300 hot-solid bamboo-sand composite pressure pipe, which is mainly suitable for agricultural irrigation secondary trunk pipes, municipal engineering water supply and drainage pipes, sewage treatment gathering pipeline secondary trunk pipes, petroleum raft production and water use. Tube, circulating cooling water and other fields.
  • the pipe of the utility model is provided with an inner lining layer 1, an inner reinforcing layer 2, a sand rubber thickening layer 3, an outer reinforcing layer 4 and an outer protective layer 5 from the inside to the outside.
  • the inner lining layer 1, the inner reinforcing layer 2, the sand rubber thickening layer 3 and the outer reinforcing layer 4 are layer-by-layer bonded and solidified into one body, and the outer protective layer 5 is coated on the outer surface of the outer reinforcing layer 4.
  • the specific processing process is as follows:
  • the fresh bamboo buds are grown 0.5-2 meters, width 5mm ⁇ 10mm, and thickness 0.3mm ⁇ lmm.
  • a layer of release film is coated on a polished steel or glass steel straight pipe mold having an outer diameter of 300 mm.
  • the inner liner layer 1 having a thickness of 1. 2 mm to 2.5 mm is formed on a straight tube mold by using a resin having an excellent anticorrosive property, a bamboo fiber nonwoven fabric, and a bamboo knit felt;
  • the outer surface of the sand rubber thickening layer 3 is radially wound with a layer of bamboo rafts to form an outer reinforcing layer 4, and the outer reinforcing layer 4 has a thickness of 2 mm.
  • the inner liner material of the present invention may adopt other different types of nonwoven fabrics and knitted felts depending on the transport medium.
  • the outer protective layer of the outermost layer can be thinner, and the thinnest 0.2mm can provide protection.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Laminated Bodies (AREA)

Abstract

一种热固型竹砂复合压力管，其径向由内至外分别设置有内衬层（1）、内增强层（2）、砂胶层（3）、外增强层（4）和外防护层（5），内衬层（1）和外防护层（5）之间由内至外依次设置有竹篾缠绕而成的内增强层（2）、矿砂胶水搅拌而成的增厚层（3）和竹篾缠绕而成的外增强层（4）。该复合压力管节能环保、生产原料可再生，且价格低廉。

Description

发明名称：热固型竹砂复合压力管
技术领域
[0001] 本实用新型涉及一种热固型竹砂复合压力管， 应用于农业灌溉、 给排水及石油 化工防腐等领域。
背景技术
[0002] 目前在给农业灌溉、 给排水及石油化工防腐行业， 普遍采用水泥管、 聚氯乙烯 、 聚乙烯、 聚丙烯、 玻璃钢管 （玻璃纤维增强塑料管、 玻璃纤维增强塑料夹砂 管） 、 钢管、 球墨铸铁管等传统管道。 水泥管成本低， 但强度低， 重量重， 管 接头易漏； 聚氯乙烯、 聚乙烯、 聚丙烯管道质轻、 光滑且耐腐蚀， 但刚度和强 度方面有所不足且原料均为石油化工合成制品； 玻璃钢管及玻璃钢夹砂管具有 耐腐蚀、 强度高、 流体阻力小、 刚度大的优点， 但产品采用主要原料增强材料 为高能耗的玻璃纤维， 树脂为石油化工合成制品， 产品及废料不可回收、 不环 保。 钢管、 球墨铸铁管等金属管道,虽然强度高,但存在耐腐性差,生产过程能耗高 、 污染高、 不环保等缺点。 因此使用这类传统管道， 消耗着大量宝贵的石油、 矿产资源、 且高能耗高排放、 资源不可再生。
[0003] 专利号为 2009201212098， 名称为 "竹纤维缠绕复合管 "的中国专利中公幵了一 种结构： 沿管径方向， 由内到外依次为内衬层、 增强层、 外防护层， 其特征在 于所述的增强层为连续的竹纤维带缠绕在内衬层上的竹纤维层， 该竹纤维层为 竹纤维带环向层、 竹纤维带螺旋层或前二者的组合， 竹纤维层的层数为二层以 上。 上述竹复合管符合节能环保、 资源可再生等先进理念， 且价格低于其它传 统管道 （除水泥管） ， 但在低压力高刚度使用领域， 特别是农业灌溉领域， 价 格仍然偏高。
技术问题
[0004] 本实用新型所要解决的技术问题是克服现有技术中的不足而提供一种节能环保 、 生产原料可再生， 且价格特别低廉的热固型竹砂复合压力管。
问题的解决方案 技术解决方案
[0005] 本实用新型解决上述技术问题采用的技术方案是： 该热固型竹砂复合压力管， 其径向由内至外分别设置有内衬层、 内增强层、 砂胶层、 外增强层和外防护层 ， 其特征在于： 所述的内衬层和外防护层之间由内至外依次设置有竹篾缠绕而 成的内增强层、 矿砂胶水搅拌而成的增厚层和竹篾缠绕而成的外增强层。 本实 用新型采用多层复合的结构， 内、 外增强层采用环保可再生的竹子， 竹子作为 一种可快速再生的、 环保的资源， 具备质轻、 高强度、 高刚度、 耐腐蚀、 价格 低廉且在我国分布广泛的特点。 砂胶增厚层一方面增加了管材的刚度， 另一方 面降低了竹材的使用量， 进一步降低了产品的成本。
[0006] 本实用新型所述的内增强层中竹篾排列整齐地缠绕粘合在内衬层外表面， 砂胶 增厚层为矿砂胶泥， 其均匀地复合在内增强层外表面， 外增强层中竹篾排列整 齐地缠绕粘合在砂胶增厚层外表面。 内、 外增强层中竹篾在缠绕的同吋加入配 比好的氨基树脂， 根据不同的使用要求设定不同的厚度， 保证管材达到设计强 度， 砂胶增厚层中采用硬度高价格低廉的矿砂， 矿砂与树脂混合均匀后复合在 内增强层的外表面， 砂胶增厚层的厚度根据不同的使用要求来设计。
[0007] 本实用新型所述的内增强层和外增强层中的竹篾长 0.5m~2m， 宽 5mm~10mm， 厚 0.3mm~lmm。 上述尺寸的竹篾加工难度低， 竹材利用率高， 降低生产成本， 在热胀冷缩的情况下能保证足够的粘结力。
[0008] 本实用新型所述的内增强层中竹篾先径向缠绕形成一层径向层粘合在内衬层的 外表面， 再轴向缠绕形成一层轴向层粘合在径向层的外表面。 先径向后轴向缠 绕的优点是优化管材承压性能。
[0009] 本实用新型所述的外增强层中竹篾先轴向缠绕形成一层轴向层粘合在砂胶增厚 层的外表面， 再径向缠绕形成一层径向层粘合在轴向层的外表面。 外增强层采 用先轴向后径向的缠绕方式， 与内增强层刚好相反， 其优点是能进一步优化管 材承压性能， 同吋使得管子外表美观。
[0010] 本实用新型所述的外增强层中竹篾径向缠绕形成一层径向层粘合在砂胶增厚层 的外表面。 外增强层也可以根据管子的不同使用要求只采用径向缠绕竹篾， 在 保证管子的使用强度的前提下最大程度的降低成本。 [0011] 本实用新型所述的内衬层为竹纤维无纺布和竹针织毡胶粘而成， 厚度为 1.2mm ~2.5mm。 上述材质和厚度的内衬层其优点是防渗、 防腐、 卫生、 内壁光滑。 除 了上述竹纤维无纺布和竹针织毡以外， 根据输送介质不同还可以采取其他不同 类型的无纺布和针织毡。
[0012] 本实用新型所述的外防护层涂覆在外增强层的外表面上， 其厚度为 0.5mm~1.5 mm。 外防护层采用防腐防水材料。 在外界环境良好的使用场合， 外防护层的厚 度还可以更薄， 最薄 0.2mm即可起到防护作用。
[0013] 本实用新型所述的内衬层、 内增强层、 砂胶增厚层、 外增强层粘结固化为一体, 保证产品能达到设计要求的强度和刚度， 方便包装存储和运输。
发明的有益效果
有益效果
[0014] 本实用新型与现有技术相比具有以下优点： 本实用新型在结构层中设置有砂胶 增厚层， 采用矿砂来增加管材厚度， 从而增加管材刚度， 降低了竹复管的材料 成本。
对附图的简要说明
附图说明
[0015] 图 1为本实用新型结构示意图。
具体实施方式
[0016] 实施例 1
[0017] 本实施例应用于 DN600的热固型竹砂复合压力管， 主要适用于农业灌溉干管， 市政工程给排水用管， 污水处理集输管线次干管， 石油幵采油、 水用管， 循环 冷却水等领域。 参见图 1， 本实用新型管材其径向由内至外分别设置有内衬层 1 、 内增强层 2、 砂胶增厚层 3、 外增强层 4和外防护层 5。 内衬层 1、 内增强层 2、 砂胶增厚层 3和外增强层 4逐层粘结复合固化成一体， 外防护层 5涂覆在外增强层 4的外表面。 具体加工过程如下：
[0018] 1、 把新鲜的毛竹幵成长 0.5-2米， 宽 5mm~10mm， 厚 0.3mm~lmm的竹蔑。 [0019] 2、 在外径为 600mm的经抛光的钢制或玻璃钢直管模具上包覆一层脱模薄膜， 用防腐性能优异的树脂、 竹纤维无纺布和竹针织毡， 在直管模具上制作厚度达 1. 2mm~2.5mm的内衬层 1 ;
[0020] 3、 待内衬层 1固化后， 把竹蔑装在缠绕机上， 通过机械化的缠绕排列整齐地铺 设在直管模具的内衬层 1上， 在缠绕的同吋加入已经配方好的氨基树脂， 形成内 增强层 2。 内增强层 2的缠绕顺序为先径向缠绕形成一层径向层粘合在内衬层 1的 外表面， 再轴向缠绕形成一层轴向层粘合在径向层的外表面。 整个内增强层 2厚 度为 4mm°
[0021] 4、 在内增强层 2外， 以搅拌好的矿砂胶泥均匀的复合 10mm厚， 形成砂胶增厚 层 3。
[0022] 5、 在砂胶增厚层 3外按内增强层 2的方式制作外增强层 4， 所不同的是外增强层 4中竹篾先轴向缠绕形成一层轴向层粘合在砂胶增厚层 3的外表面， 再径向缠绕 形成一层径向层粘合在轴向层的外表面。 外增强层 4厚度为 4mm。
[0023] 6、 缠绕完毕后， 对管道进行加热固化， 树脂交联固化后， 成为坚硬一体的热 固型复合管道。
[0024] 7、 在管道外面涂刷一层防水防腐较好的树脂及防辐射填料， 厚约 0.5mm~lmm
， 形成外防护层 5。
[0025] 本管道经水压测试， 短吋失效压力达到 1.2MPa， 刚度达到 10000N/m 2， 管体材 质密度为 1.4-1.5。
[0026] 实施例 2
[0027] 本实施例应用于 DN300的热固型竹砂复合压力管， 主要适用于农业灌溉次干管 ， 市政工程给排水用管， 污水处理集输管线次干管， 石油幵采油、 水用管， 循 环冷却水等领域。 参见图 1， 本实用新型管材其径向由内至外分别设置有内衬层 1、 内增强层 2、 砂胶增厚层 3、 外增强层 4和外防护层 5。 内衬层 1、 内增强层 2、 砂胶增厚层 3和外增强层 4逐层粘结复合固化成一体， 外防护层 5涂覆在外增强层 4的外表面。 具体加工过程如下：
[0028] 1、 把新鲜的毛竹幵成长 0.5-2米， 宽 5mm~10mm， 厚 0.3mm~lmm的竹蔑。
[0029] 2、 在外径为 300mm的经抛光的钢制或玻璃钢直管模具上包覆一层脱模薄膜， 用防腐性能优异的树脂、 竹纤维无纺布和竹针织毡， 在直管模具上制作厚度达 1. 2mm~2.5mm的内衬层 1 ;
[0030] 3、 待内衬层 1固化后， 把竹蔑装在缠绕机上， 通过机械化的缠绕排列整齐地铺 设在直管模具的内衬层 1上， 在缠绕的同吋加入已经配方好的氨基树脂， 形成内 增强层 2。 内增强层 2的缠绕顺序为先径向缠绕形成一层径向层粘合在内衬层 1的 外表面， 再轴向缠绕形成一层轴向层粘合在径向层的外表面。 整个内增强层 2厚 度为 4mm°
[0031] 4、 在内增强层 2外， 采用矿砂和树脂均匀地复合 6mm厚， 形成砂胶增厚层 3。
[0032] 5、 在砂胶增厚层 3外表面径向缠绕一层竹篾形成外增强层 4， 外增强层 4厚度为 2mm。
[0033] 6、 缠绕完毕后， 对管道进行加热固化， 树脂交联固化后， 成为坚硬一体的热 固型复合管道。
[0034] 7、 在管道外面涂刷一层防水防腐较好的树脂及防辐射填料， 厚约 0.5mm~lmm
， 形成外防护层 5。
[0035] 本管道经水压测试， 短吋失效压力达到 1.6MPa， 刚度达到 15000N/m 2。
[0036] 本实用新型内衬层材料除了上述实施例中使用的竹纤维无纺布和竹针织毡以外 ， 根据输送介质不同还可以采取其他不同类型的无纺布和针织毡。 在外界环境 良好的使用场合， 最外层涂覆的外防护层的厚度还可以更薄， 最薄 0.2mm即可起 到防护作用。
[0037] 本说明书中所描述的以上内容仅仅是对本实用新型结构所作的举例说明。 本实 用新型所属技术领域的技术人员可以对所描述的具体实施例做各种各样的修改 或补充或采用类似的方式替代， 只要不偏离本实用新型的结构或者超越本权利 要求书所定义的范围， 均应属于本实用新型的保护范围。

Claims

权利要求书
一种热固型竹砂复合压力管， 其径向由内至外分别设置有内衬层 和外防护层， 其特征在于： 所述的内衬层和外防护层之间由内至 外依次设置有竹篾缠绕而成的内增强层、 砂胶增厚层和竹篾缠绕 而成的外增强层。
根据权利要求 1所述的热固型竹砂复合压力管， 其特征在于： 所述 的内增强层中竹篾排列整齐地缠绕粘合在内衬层外表面， 砂胶增 厚层为矿砂胶泥， 其均匀地复合在内增强层外表面， 外增强层中 竹篾排列整齐地缠绕粘合在砂胶增厚层外表面。
根据权利要求 1或 2所述的热固型竹砂复合压力管， 其特征在于： 所述的内增强层和外增强层中的竹篾长 0.5m~2m， 宽 5mm~10mm ， 厚 0.3mm〜lmm。
根据权利要求 1或 2所述的热固型竹砂复合压力管， 其特征在于： 所述的内增强层中竹篾先径向缠绕形成一层径向层粘合在内衬层 的外表面， 再轴向缠绕形成一层轴向层粘合在径向层的外表面。 根据权利要求 1或 2所述的热固型竹砂复合压力管， 其特征在于： 所述的外增强层中竹篾先轴向缠绕形成一层轴向层粘合在砂胶增 厚层的外表面， 再径向缠绕形成一层径向层粘合在轴向层的外表 面。
根据权利要求 1或 2所述的热固型竹砂复合压力管， 其特征在于： 所述的外增强层中竹篾径向缠绕形成一层径向层粘合在砂胶增厚 层的外表面。
根据权利要求 1所述的热固型竹砂复合压力管， 其特征在于： 所述 的内衬层为竹纤维无纺布和竹针织毡胶粘而成， 厚度为 1.2mm~2.5 mm。
根据权利要求 1所述的热固型竹砂复合压力管， 其特征在于： 所述 的外防护层涂覆在外增强层的外表面上， 其厚度为 0.5mm~1.5mm [权利要求 9] 根据权利要求 1所述的热固型竹砂复合压力管， 其特征在于： 所述 的内衬层、 内增强层、 砂胶增厚层、 外增强层粘结固化为一体。
PCT/CN2014/090251 2013-11-07 2014-11-04 热固型竹砂复合压力管 WO2015067164A1 (zh)

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