CN105003753B - About the thermoplastic pipe and production method of continuous lod - Google Patents

About the thermoplastic pipe and production method of continuous lod Download PDF

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Publication number
CN105003753B
CN105003753B CN201510482611.9A CN201510482611A CN105003753B CN 105003753 B CN105003753 B CN 105003753B CN 201510482611 A CN201510482611 A CN 201510482611A CN 105003753 B CN105003753 B CN 105003753B
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China
Prior art keywords
thermoplastic
layer
pipeline
fiber
enhancing structure
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CN201510482611.9A
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Chinese (zh)
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CN105003753A (en
Inventor
王云凯
游雄伟
麻加伟
谢锋
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广东宝通玻璃钢有限公司
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Priority to CN201510482611.9A priority Critical patent/CN105003753B/en
Publication of CN105003753A publication Critical patent/CN105003753A/en
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Publication of CN105003753B publication Critical patent/CN105003753B/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L9/00Rigid pipes
    • F16L9/12Rigid pipes of plastics with or without reinforcement
    • F16L9/121Rigid pipes of plastics with or without reinforcement with three layers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29DPRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D23/00Producing tubular articles
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L11/00Hoses, i.e. flexible pipes
    • F16L11/04Hoses, i.e. flexible pipes made of rubber or flexible plastics
    • F16L11/08Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall
    • F16L11/081Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall comprising one or more layers of a helically wound cord or wire
    • F16L11/083Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall comprising one or more layers of a helically wound cord or wire three or more layers

Abstract

The present invention relates to glass fibre and pipeline field shaping technique; a kind of specifically thermoplastic pipe and production method about continuous lod; braiding enhancing structure layer of the pipeline on internal layer and internal layer; and the outer layer thermoplasticity protective layer on internal layer and enhancing structure layer is constituted; three-decker one-shot forming; internal layer is constituted using thermoplastic film or sheet material, and enhancement layer is constituted using the braiding of preimpregnated thermoplastic silvalin, winding and longitudinal direction configuration;Outer layer is formed using thermoplastic on internal layer and enhancement layer with extruder extrusion, and three-decker is combined together.Pipeline specifications are below D1000mm, the use of pressure are 1 15MPa.The present invention retains traditional RTP three-decker, and traditional multistep molding method is changed into one-shot forming, makes production line contraction in length half, equipment investment greatly reduces, this new product quality is more stable, with higher internal pressure strength, can continuously produce.

Description

About the thermoplastic pipe and production method of continuous lod

[technical field]

The present invention relates to glass fibre and pipeline field shaping technique, a kind of specifically relevant continuous lod Thermoplastic pipe and production method.

[background technology]

Nearly ten years, continuous fiber reinforced thermoplastic pipeline (Reinforced Thermoplastic Pipes) is always The popular research direction of international pipeline field, because it has obviously advantage, can play the high intensity of fiber, bear height Pressure, the pliability and corrosion resistance that can keep thermoplastic good again is contour in oil feed pipe, Gas Pipe, supplying drainage Pressure pipe application aspect has wide market.

Traditional RTP point three-decker, i.e., inside and outside to be managed for extrusioning thermoplastic plastic, centre is fiber-reinforced layer or steel Silk enhancement layer.The method used is first extruded thermoplastic inner tube, then winds enhancement layer on inner pipe, finally extrudes outer surface and protects Sheath.As described in patent document CN103878990A, the product anti-pressure ability of this method production is high, and security is good, but this Kind of production line is very long, generally requires 80M length or so, and even more than 100M want for the thick pipe of multilayer enhancing, due to layer and Heating fusion technology requires higher between layer, and control is bad, quality problems easily occurs, at present, ripe European production line is big The RMB of 2000-3000 ten thousand is about needed, domestic production line is also in development, it is contemplated that be also required to more than 10,000,000 RMB, This high cost investment, poor efficiency production hinders the application of RTP.Though the method described in patent document CN102363363A It is so simple, but the online impregnation technology of fiber is also not by far up to the mark at present, and the online impregnation of fiber is difficult to the production for being impregnated with, being produced Product microbubble is too many, it is impossible to used as anti-high-voltage product.As fruit fiber using braid pattern enhancing, party's rule at all it is capable not It is logical.

[content of the invention]

The purpose of the invention be in order to overcome the defect of traditional production glass fiber reinforcement thermoplastic pipe, according to The technical principle of thermosetting pultrusion, it is creative to be combined pultrude process with expressing technique with reference to thermoplastic extrusion method Get up, form unique pultrusion/extrusion mixing method, the three-decker pipe one-shot forming of traditional multistep molding is come out, technique is first Enter, continuous production takes up an area small, small investment, with substantial economics.The present invention constitutes internal layer using thermoplastic film or sheet material, Enhancement layer is constituted provided with the braiding of preimpregnated thermoplastic silvalin, winding and longitudinal direction configuration on internal layer, is set on internal layer and enhancement layer There is outer layer, outer layer uses extruder for shaping, and three-decker is combined together, this one-time formed new product combines jail Gu, steady quality, resistance to compression is high, with brand-new outward appearance and superior performance, and corrosion-resistant, and service life is long, in plumbing, combustion The fields such as tracheae, oil feed pipe have broad application prospects.

To achieve these goals, a kind of thermoplastic pipe about continuous lod is designed, the pipeline is by thermoplasticity Braiding enhancing structure layer on internal layer and internal layer, and it is provided with outer layer thermoplasticity protective layer group on internal layer and enhancing structure layer Into described three-decker is by pultrusion and extrusion mixing method one-shot forming, and described internal layer uses thermoplastic film or sheet material structure Into;Described enhancement layer is constituted using the braiding of preimpregnated thermoplastic silvalin, winding and longitudinal direction configuration;Described outer layer uses thermoplastic Property material formed in inner tube and enhancement layer with extruder extrusion, and three-decker is combined together;Described pipeline specifications are Below D1000mm, uses pressure 1-15MPa.

Described internal layer, to wind or longitudinal mode is constituted, forms overall by thermoplastic film or sheet material at a temperature of melting Internal layer, thickness about 0.2-2mm.

Described enhancement layer is that the fiber for being soaked with thermoplastic in advance is woven by design requirement, is wound, is longitudinally matched somebody with somebody Put on internal layer, its thickness is determined by intensity requirement.

Described outer layer is that using thermoplastic in internal layer and enhancement layer melting, feed supplement is extruded with extruder pressurization, Three-decker is set to combine together, and the thermoplasticity protective layer for being 0.5-2mm in its surface formation thickness.

Described fiber is adopted as glass fibre or basalt fibre or carbon fiber or aramid fiber etc..

Described thermoplastic is PVC or PE or HDPE or PP or PA or other modified thermoplastic matrixes.

A kind of production method of thermoplastic pipe about continuous lod:

Creative combines pultrude process with expressing technique, unique pultrusion/extrusion mixing method is formed, by tradition The three-decker pipe one-shot forming of multistep molding comes out, and technique is advanced, continuous production, takes up an area small, small investment, with great economy Benefit, and the new product produced is firmly combined with, steady quality, and resistance to compression is high, whole with brand-new outward appearance and superior performance Individual production line includes following technique:

A) internal layer thermoplastic covering technique:By thermoplastic film or sheet material to wind or longitudinal mode is evenly coated at metal On core;

B) fibrage, winding, longitudinal yarn configuration technique:The fiber for being soaked with thermoplastic in advance is carried out by design requirement Braiding, winding, longitudinal direction are configured on internal layer;

C) heating technique:The internal layer completed and fiber-reinforced layer are heated by hauling machine feeding die cavity, pre- constant temperature is reached Degree, makes thermoplastic melting;Described predetermined temperature is generally 150-280 DEG C;

D) expressing technique:In internal layer and the melting of enhancement layer thermoplastic simultaneously, mended in side with extruder pressurization extrusion Material, makes three-decker combine together, and forms thermoplasticity protective layer on surface;

E) Vacuum shaping:The pipeline pulled out passes through shaping cover Vacuum shaping, and is cooled down in vacuum tank;

F) cool down:The pipeline come out from vacuum shaping box, it is further cold in cooler bin if temperature does not drop to normal temperature also But to normal temperature;

G) draw:Pipeline is continuously pulled out using suitable hauling machine;

H) cut:Finished product is cut into by design length.

Compared with the existing technology, technological design rationally, retains existing RTP three-decker, creative for the invention Pultrude process is combined with expressing technique, unique pultrusion/extrusion mixing method is formed, by three layers of traditional multistep molding Structural tube one-shot forming comes out, and technique is advanced, continuous production, takes up an area small, small investment, with substantial economics;Produced New product is firmly combined with, steady quality, product quality obtained one leap, by traditional multistep molding method change into once into Type technology, makes production line contraction in length half, and equipment investment greatly reduces, and product is with very high compression strength and shock resistance Ability, the inside and outside thickness degree of pipe of the inventive method production can reach 0.5mm or so, and this is that traditional handicraft can not be realized, greatly Product cost is reduced greatly, is that, with revolutionary RTP new process for producing, the promotion and application of RTP will be produced important Impetus.

[brief description of the drawings]

Fig. 1 is the structural representation of the production line of the invention;

Fig. 2 is the section structure schematic diagram of the invention;

In Fig. 1:1. the outer outer mold 7. of 5. core of braider 6. of 3. wrapping machine of braider 4. in inner thermoplastic layer 2. The vacuum shaping box 13. of 11. shaping cover of heating rod 12. is cooled down in the additional extrusion die 10. of 8. screw extruder of gas ket 9. The cutting machine of 14. hauling machine of case 15.;

In Fig. 2:21. the internal layer of 22. enhancement layer of outer layer 23.;

Fig. 1 is specified as the Figure of abstract of the present invention.

[embodiment]

The invention will be further described below in conjunction with the accompanying drawings, for the structure and principle of this device people professional to this It is very clear.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to limit this Invention.

As shown in Fig. 2 the pipeline in the present invention weaves enhancing Rotating fields on internal layer and internal layer, set on enhancing Rotating fields There is outer layer, three-decker one-shot forming is formed, wherein internal layer is by thermoplastic film or sheet material to wind or longitudinal mode is constituted.Increase The fiber for being soaked with thermoplastic in advance is woven, wound by strong layer by design requirement, longitudinal direction is configured on internal layer.Including outer layer During the thermoplastic melting of pipe and enhancement layer, with extruder pressurization extrusion feed supplement, three-decker is set to combine together, in surface shape Into thermoplasticity protective layer.Fiber is adopted as glass fibre, basalt fibre, carbon fiber, aramid fiber etc..Thermoplastic is PVC, PE, HDPE, PP, PA or other modified thermoplastic matrixes.

Production line such as Fig. 1 designed by the present invention, first coats inner thermoplastic layer, followed by the volume of fiber on the core of front end Knit, wind, where stage casing is the core that collectively forms of external mold and core and extruder, die head, interior heating of heating, back segment is hot Thermoplastic plastic produces general vacuum shaping box, cooler bin, hauling machine, cutting machine etc..

Specifically production method is:First thermoplastic film or sheet material 1 are evenly coated on core 5, then there will be thermoplasticity preimpregnation The fiber of material is woven by interior braider 2, and then wrapping machine 3 is wound hoop layer, then is woven by outer braider 4, Multilayer enhancing structure is constituted, under the effect of hauling machine 14, is heated in feeding heating internal model 5, the die cavity of external mold 6, heating-up temperature root Determined according to different materials, typically at 150-280 DEG C, the thermoplastic of fiber surface is reached molten condition, and by screw rod The thermoplastic material that extruder 8 is extruded is merged for 9 sections in extrusion die, forms overall.Die head heating is by additional gas ket 7 and interior Heating rod 10 is collectively formed, and pipeline out is shaped by shaping cover 11 and vacuum shaping box 12, then complete by cooler bin 13 Cooling, enters cutting machine 15 finally by hauling machine 14, and length is cut on request, as finished product.

Claims (2)

1. a kind of relevant continuous fiber reinforced thermoplastic pipeline, it is characterised in that:The pipeline passes through pultrusion and extrusion mixing method one Secondary shaping, i.e. fiber disposably mix pull-out with thermoplastic;
Braiding enhancing structure layer of the pipeline in thermoplastic inner layer and internal layer, and in thermoplastic inner layer and braiding enhancing knot Outer layer thermoplasticity protective layer composition on structure layer;
Described pipeline specifications are below D1000mm, use pressure 1-15MPa;
Described thermoplastic inner layer, to wind or longitudinal mode is constituted, forms whole by thermoplastic film or sheet material at a temperature of melting Internal layer, thickness 0.2-2mm;
Described braiding enhancing structure layer is that the fiber for being soaked with thermoplastic in advance is woven by design requirement, is wound, is indulged To being configured in thermoplastic inner layer, its thickness is determined by intensity requirement;
Described outer layer thermoplasticity protective layer is to use thermoplastic in thermoplastic inner layer and braiding enhancing structure layer melting, With extruder pressurization extrusion feed supplement, thermoplastic inner layer, braiding enhancing structure layer and outer layer thermoplasticity protective layer is set to combine together, and The thermoplasticity protective layer that thickness is 0.5-2mm is formed on its surface;
Described fiber is adopted as glass fibre or basalt fibre or carbon fiber or aramid fiber;
Described thermoplastic is PVC or PE or PP or PA.
2. a kind of production method of thermoplastic pipe about continuous lod, it is characterised in that:
Pultrude process is combined with expressing technique, pultrusion/extrusion mixing method is formed, by the three-decker of traditional multistep molding Pipe one-shot forming comes out, and whole production line includes following technique:
A) internal layer thermoplastic covering technique:By thermoplastic film or sheet material to wind or longitudinal mode is evenly coated at metal core die On;
B) fibrage, winding, longitudinal yarn configuration technique:The fiber for being soaked with thermoplastic in advance is compiled by design requirement Knit, wind, longitudinal direction is configured in thermoplastic inner layer;
C) heating technique:By the thermoplastic inner layer completed and braiding enhancing structure layer by hauling machine feeding die cavity heating, reach Predetermined temperature, makes thermoplastic melting;Described predetermined temperature is 150-280 DEG C;
D) expressing technique:In thermoplastic inner layer and the melting of braiding enhancing structure layer thermoplastic simultaneously, in side extruder Pressurization extrusion feed supplement, makes thermoplastic inner layer, braiding enhancing structure layer and outer layer thermoplasticity protective layer combine together, and in surface shape Into thermoplasticity protective layer;
E) shape:The pipeline pulled out is shaped by stock mould;
F) cool down:The pipeline come out from stock mould, is further cooled to normal temperature in cooler bin;
G) draw:Pipeline is continuously pulled out using suitable hauling machine;
H) cut:Finished product is cut into by design length.
CN201510482611.9A 2015-08-07 2015-08-07 About the thermoplastic pipe and production method of continuous lod CN105003753B (en)

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CN105003753B true CN105003753B (en) 2017-10-20

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106827576A (en) * 2016-08-08 2017-06-13 山东极威新材料科技有限公司 A kind of continuous fiber reinforced thermoplastic multiple tube and its forming method
CN106239858B (en) * 2016-08-13 2018-07-10 仪征市祥生复合材料有限公司 A kind of composite tube section bar production method

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101016964A (en) * 2007-02-07 2007-08-15 李寿山 Heavy caliber high-strength plastic wound pipe having pipe wall made of wrapping material and manufacture method therefor
CN101992555A (en) * 2010-11-05 2011-03-30 赵树辉 Processing method of net framework enhanced plastic composite pipe and manufactured composite pipe
CN102777708A (en) * 2012-07-25 2012-11-14 广东宝通玻璃钢有限公司 Fiber-woven pultrusion pipeline and production method
CN104534187A (en) * 2014-12-23 2015-04-22 泉州泉港华博化工科技有限公司 Fiber reinforced thermoplastic compound pipeline and manufacturing technology thereof
CN204879094U (en) * 2015-08-07 2015-12-16 广东宝通玻璃钢有限公司 Thermoplasticity pipeline of relevant continuous fibers reinforcing

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT421658T (en) * 2001-03-23 2009-02-15 Arkema France Multilayer plastic tube for the supply of liquids
CN101158424A (en) * 2007-10-29 2008-04-09 江苏法尔胜新型管业有限公司 Metal mesh plastic composite pipe winded with reinforced structure and preparation method thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101016964A (en) * 2007-02-07 2007-08-15 李寿山 Heavy caliber high-strength plastic wound pipe having pipe wall made of wrapping material and manufacture method therefor
CN101992555A (en) * 2010-11-05 2011-03-30 赵树辉 Processing method of net framework enhanced plastic composite pipe and manufactured composite pipe
CN102777708A (en) * 2012-07-25 2012-11-14 广东宝通玻璃钢有限公司 Fiber-woven pultrusion pipeline and production method
CN104534187A (en) * 2014-12-23 2015-04-22 泉州泉港华博化工科技有限公司 Fiber reinforced thermoplastic compound pipeline and manufacturing technology thereof
CN204879094U (en) * 2015-08-07 2015-12-16 广东宝通玻璃钢有限公司 Thermoplasticity pipeline of relevant continuous fibers reinforcing

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Address after: 518118 No. 6352 Pingshan Avenue, Shatian Community, Kengzi Street, Pingshan District, Shenzhen City, Guangdong Province

Patentee after: Guangdong Baotong FRP Co., Ltd.

Address before: 516221 Xin'an Formation 4, Qiuchang Xintang Village, Huiyang District, Huizhou City, Guangdong Province

Patentee before: Guangdong Baotong FRP Co., Ltd.