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
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
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
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.