CN103016856A - Fiber mesh tape-wound and reinforced composite pipe, preparation process and device - Google Patents
Fiber mesh tape-wound and reinforced composite pipe, preparation process and device Download PDFInfo
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- CN103016856A CN103016856A CN2012105026403A CN201210502640A CN103016856A CN 103016856 A CN103016856 A CN 103016856A CN 2012105026403 A CN2012105026403 A CN 2012105026403A CN 201210502640 A CN201210502640 A CN 201210502640A CN 103016856 A CN103016856 A CN 103016856A
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Abstract
The invention relates to a fiber mesh tape-wound and reinforced composite pipe, a preparation process and a device, belonging to the technical field of forming processes of composite pipes. The composite pipe comprises an inner-layer core pipe and a post-coated layer, as well as a fiber mesh tape arranged between two layers, wherein the inner-layer core pipe is extruded by a core pipe extruding machine, the adhesive resin fiber mesh tape is heated through a post-heating box, and the composite pipe is finally obtained by traction through a post-traction machine, sizing through a vacuum spraying and sizing box and the like. According to the composite pipe disclosed by the invention, the technology is adopted, the preparation process is simple, the existing tape plastic covering treatment process and the composite pipe forming process are combined into a whole, the number of workers for production is reduced, and the degree of automation is improved; furthermore, the used device is a conventional device, and the cost is reduced; and in addition, adhesive resin is firstly coated on the outer surface of the core pipe, and the plain woven fiber mesh tape is further wounded, so that the interface problem in the pipe is effectively solved, the mechanical properties of the pipe are upgraded and the stability of the pipe during long-term use is also improved.
Description
Technical field
The invention belongs to compound pipe molding process engineering field, be specifically related to a kind of fiber mesh band of reinforcing fiber plain weave that adopts and twine reinforced composite pipe and preparation process and equipment.
Background technique
Along with developing rapidly of petroleum gas and chemical industry, the newly-increased chemical industry fluid-transporting tubing that lays of annual China reaches thousands of kilometers.Traditional metallic conduit take steel pipe as representative exposes the problems such as corrosion failure, tube wall incrustation, mounting and installation difficulty and maintenance and repair be costly in the use in these fields.Simultaneously, the consequences such as environmental pollution, security incident, production pause and energy consumption increase by above problem is brought have had a strong impact on the national economic development and ecotope balance.
The Filament-wound Machine reinforced composite pipe is a kind of novel thermoplastic multiple tube of rising in recent years, have the plurality of advantages such as corrosion-resistant, wear-resistant, that heat resistance is good, thermal conductivity is low, surface roughness is low, flexibility is good, not only overcome the defective of traditional metal pipeline, also have both be easy to recycle, designability is strong and the advantage such as environmental friendliness.At present, the moulding process that such composite pipe adopts is to be extruded into first the core pipe, will cover to mould the fiber band of processing and directly be wrapped on the core pipe again, coats at last outermost resin.Yet because the body material of tubing is thermoplastic resin, melt viscosity is large, be difficult to reinforcing fiber is coated fully, so the problem of body Presence of an interface combination, Long-Term Properties is difficult to guarantee.
Summary of the invention
For the above-mentioned problems in the prior art, the object of the present invention is to provide a kind of have excellent mechanical property and stable fiber mesh band winding reinforced composite pipe and preparation process and the equipment of long-term behaviour, solved present Filament-wound Machine reinforced composite pipe interface in conjunction with bad, the unsettled defective of Long-Term Properties.
Described fiber mesh band twines reinforced composite pipe, comprise internal layer core pipe and rear clad, it is characterized in that between internal layer core pipe and the rear clad fiber mesh band being set, described fiber mesh band twines and is arranged on internal layer core tube outer surface, fix by applying binding resin, coated by rear clad again.
Described fiber mesh band twines reinforced composite pipe, it is characterized in that described fiber mesh band twists the continuous grids band that bunchy, plain weave obtain by reinforcing fiber, and the grid of grid band be square, and size of mesh opening is 1.0mm-3.0mm.
Described fiber mesh band twines reinforced composite pipe, it is characterized in that described reinforcing fiber is glass fibre, aramid fibre or basalt fibre, every reinforcing fiber through water-soluble gluing agent dipping process, guarantees this reinforcing fiber monofilament surface complete wetting before being woven into band.
Described fiber mesh band twines reinforced composite pipe, it is characterized in that the fiber mesh band is 0.5mm-4.0mm at the winding thickness of internal layer core tube outer surface.
Described fiber mesh band twines the preparation process of reinforced composite pipe, it is characterized in that comprising the steps:
1) resin raw material is extruded after heating, shearing, plasticizing by core pipe extruder and core pipe extrusion die, enters through initial vacuum spray sizing tank to carry out sizing under the traction of front haulage machine again, obtains internal layer core pipe;
2) internal layer core pipe via front heating cabinet to this core tube outer surface heating and melting, by applying extrusion die, binding resin is coated to the outer surface of internal layer core pipe by applying extruder and gluing extrusion die, the fiber mesh band successively twines enhancing to the internal layer core pipe that is coated with behind the binding resin by the first Stetch Wrapping Machine and the second Stetch Wrapping Machine, makes binding resin to the complete embedding of fiber mesh band by rear heating cabinet heating again;
The internal layer core pipe of the winding that 3) step 2) obtains by the rear haulage machine travel to rear coating die head, the outer field resin raw material of tubing coats the internal layer core tube outer surface that twined by rear coating extruder and rear coating die head, again by final vacuum spray sizing tank sizing, obtain the fiber mesh band and twine reinforced composite pipe, coil and obtain final coil pipe product through coiling pipe collecting machine.
Described fiber mesh band twines the preparation process of reinforced composite pipe, it is characterized in that the described core pipe of step 1) extruder is single screw extrusion machine, and extrusion temperature is 180-230 ℃, and the circulating cooling coolant-temperature gage of initial vacuum spray sizing tank is 14-18 ℃.
Described fiber mesh band twines the preparation process of reinforced composite pipe, it is characterized in that step 2) described front heating cabinet heating-up temperature is 220-240 ℃, the binding resin extrusion temperature is 200-220 ℃, the rotating speed of the first Stetch Wrapping Machine and the second Stetch Wrapping Machine is 2-40rpm, twines tension force and is 150-600N.
Described fiber mesh band twines the preparation process of reinforced composite pipe, it is characterized in that the described rear heating cabinet heating-up temperature of step 3) is 220-240 ℃, rear coating extrusion temperature is 200-230 ℃, and the circulating cooling coolant-temperature gage of final vacuum spray sizing tank is 14-18 ℃.
Described fiber mesh band twines the preparation process of reinforced composite pipe, and the hauling speed that it is characterized in that coiling the speed of coiling of pipe collecting machine and front haulage machine, rear haulage machine is consistent.
Described fiber mesh band twines the used equipment of preparation process of reinforced composite pipe, it is characterized in that comprising the core pipe extruder that arranges from the beginning to the end successively, initial vacuum spray sizing tank, the front haulage machine, front heating cabinet, apply extruder, the first Stetch Wrapping Machine, the second Stetch Wrapping Machine, rear heating cabinet, rear coating extruder, final vacuum spray sizing tank, rear haulage machine and coil pipe collecting machine, described core pipe outlet of extruder place arranges core pipe extrusion die, apply the extruder bottom coating extrusion die is set, rear coating extruder bottom arranges rear coating die head, between described rear heating cabinet and the rear coating extruder centralized positioning frame is set.
By adopting above-mentioned technology, compared with prior art, beneficial effect of the present invention is as follows:
1) band Stetch Wrapping Machine of the present invention is positioned at after the coating extruder that binding resin uses, have two, be responsible for the fiber mesh band is wound on the internal layer core pipe, each Stetch Wrapping Machine comprises 2 above tep reels, each single-deck is designed with tension force control system and winding angle regulatory function, two Stetch Wrapping Machines are by a cover transmission system control, with the synchronism that guarantees to twine;
2) the present invention is by arranging the fiber mesh band between internal layer core pipe and rear clad, the fiber mesh band twines and is arranged on internal layer core tube outer surface, fix by applying binding resin, coated by rear clad again, solved present Filament-wound Machine reinforced composite pipe interface in conjunction with bad, the unsettled defective of Long-Term Properties, making becomes complete one between the pipeline each several part;
3) preparation process's statement of account of the present invention, will be in the past band cover and mould processing procedure and the compound pipe molding process unites two into one, reduced production labor people quantity, improved automaticity, and used equipment all is conventional equipment, reduced cost;
4) the present invention is by applying binding resin at the core tube outer surface first, twine again a kind of technological method of plain weave fiber mesh band, effectively solve the interface problem of tubing inside, not only promoted the mechanical property of tubing, also improved the stability of long-term use.
Description of drawings
Fig. 1 is tube forming equipment schematic diagram of the present invention;
Fig. 2 is fiber mesh band structure schematic diagram of the present invention;
Fig. 3 is composite pipe pipe structure schematic diagram of the present invention.
Among the figure: 1-core pipe extruder, 2-core pipe extrusion die, 3-initial vacuum spray sizing tank, heating cabinet before the 4-front haulage machine, 5-, 6-applies extruder, 7-applies extrusion die, 8-the first Stetch Wrapping Machine, 9-the second Stetch Wrapping Machine, heating cabinet behind the 10-coats extruder behind the 12-, coat die head behind the 13-, 14-final vacuum spray sizing tank, 15-rear haulage machine, 16-coils pipe collecting machine, clad behind the 17-, 18-fiber mesh band, 19-internal layer core pipe.
Embodiment
The invention will be further described below in conjunction with Figure of description:
As Figure 1-3, the fiber mesh band twines reinforced composite pipe, comprise internal layer core pipe 19 and rear clad 17, between internal layer core pipe 19 and the rear clad 17 fiber mesh band 18 is set, described fiber mesh band 18 twines and is arranged on internal layer core pipe 19 outer surfaces, fix by applying binding resin, coated by rear clad 17 again, wherein fiber mesh band 18 is by reinforcing fiber twisting bunchy, the continuous grids band that plain weave obtains, the grid of grid band is square, size of mesh opening is 1.0mm-3.0mm, and this reinforcing fiber is glass fibre, the high-performance fiber that intensity can not reduce under the high strength such as aramid fibre or basalt fibre high-modulus and the high temperature.Every reinforcing fiber through water-soluble gluing agent dipping process, guarantees this reinforcing fiber monofilament surface complete wetting before being woven into band, the fiber mesh band is 0.5mm-4.0mm at the winding thickness of internal layer core tube outer surface.
As shown in Figure 1, the preparation process that fiber mesh band of the present invention twines reinforced composite pipe is as follows: resin raw material is at first extruded by core pipe extruder 1 and core pipe extrusion die 2, through initial vacuum spray sizing tank 3 sizings, obtains the core pipe.The core pipe is under the traction of front haulage machine 4, behind 5 pairs of pipe outer surface heating and meltings of front heating cabinet, by applying extrusion die 7, binding resin is coated to pipe outer surface by applying extruder 6 and gluing extrusion die 7, the first Stetch Wrapping Machine 8 and the second Stetch Wrapping Machine 9 successively twine enhancing to the core pipe behind the gluing, make binding resin to the complete embedding of fiber mesh band by rear heating cabinet 10 heating again.Rear coating extruder 12 and rear coating die head 13 is responsible for the tubing cladding material extruded and is coated on the pipe outer surface that twined, sprays sizing tank 14 sizings formation pipe material product by final vacuum, coils and obtains final coil pipe product through coiling pipe collecting machine 16.Front haulage machine 4, rear haulage machine 10 are responsible for traction tubing and are advanced by process flow steps.
Embodiment one: aramid fiber grid band twines the enhanced polyethylene composite pipe
After adding the hot shearing plasticizing, extrude extrusion temperature 180-200 ℃ with adding single screw extrusion machine behind 95 parts of polyethylene (PE80) and 5 parts of combination dryings of black polyethylene master batch.Extrusion resin traction under traction tube helps enters initial vacuum spray sizing tank and forms core pipe, 14-18 ℃ of circulated sprinkling cooling water temperature.The core pipe is by front heating cabinet, and heating-up temperature 220-240 ℃ makes after the tube surfaces melting by binding resin coating die head, 200-220 ℃ of binding resin extrusion temperature.The first and second Stetch Wrapping Machines successively twine the tubing behind the gluing, and the Stetch Wrapping Machine speed range is 2-40rpm, twine tension force 150-600N.Tubing warp after the winding is heating cabinet later, heating-up temperature 220-240 ℃, after again traction coat processing to rear coating extrusion die, the polyethylene extrusion resin formula is identical with the core pipe, extrusion temperature 200-220 ℃, be formed into product tubing, 14-18 ℃ of circulated sprinkling cooling water temperature through final vacuum spray sizing tank.Tubing is coiled the pipe collecting machine closed tube, coils speed consistent with hauling speed.
Embodiment two: the fiberglass mesh band twines the Reinforced Polypropylene composite pipe
After adding the hot shearing plasticizing, extrude extrusion temperature 210-230 ℃ with adding single screw extrusion machine behind 96 parts of atactic copolymerized polypropenes (PP-R) and 4 parts of combination dryings of green master batch.Extrusion resin traction under traction tube helps enters initial vacuum spray sizing tank and forms core pipe, 14-18 ℃ of circulated sprinkling cooling water temperature.The core pipe is by front heating cabinet, and heating-up temperature 230-240 ℃ makes after the tube surfaces melting by binding resin coating die head, 200-220 ℃ of binding resin extrusion temperature.The first and second Stetch Wrapping Machines successively twine the tubing behind the gluing, and the Stetch Wrapping Machine speed range is 2-40rpm, twine tension force 150-400N.Tubing after the winding is through heating cabinet later, and traction is to rear coating die head again after heating-up temperature 230-240 ℃, and 210-230 ℃ of rear coating extrusion temperature is formed into product tubing, 14-18 ℃ of circulated sprinkling cooling water temperature through final vacuum spray sizing tank.Tubing is coiled the pipe collecting machine closed tube, coils speed consistent with hauling speed.
Claims (10)
1. the fiber mesh band twines reinforced composite pipe, comprise internal layer core pipe (19) and rear clad (17), it is characterized in that between internal layer core pipe (19) and the rear clad (17) fiber mesh band (18) being set, described fiber mesh band (18) twines and is arranged on internal layer core pipe (19) outer surface, fix by applying binding resin, coated by rear clad (17) again.
2. fiber mesh band according to claim 1 twines reinforced composite pipe, it is characterized in that the continuous grids band that described fiber mesh band (18) is obtained by reinforcing fiber twisting bunchy, plain weave, the grid of grid band is square, and size of mesh opening is 1.0mm-3.0mm.
3. fiber mesh band according to claim 2 twines reinforced composite pipe, it is characterized in that described reinforcing fiber is glass fibre, aramid fibre or basalt fibre, every reinforcing fiber is before being woven into band, through water-soluble gluing agent dipping process, guarantee this reinforcing fiber monofilament surface complete wetting.
4. fiber mesh band according to claim 1 twines reinforced composite pipe, it is characterized in that fiber mesh band (18) is 0.5mm-4.0mm at the winding thickness of internal layer core pipe (19) outer surface.
5. the preparation process that fiber mesh band as claimed in claim 1 twines reinforced composite pipe is characterized in that comprising the steps:
1) resin raw material is extruded after heating, shearing, plasticizing by core pipe extruder (1) and core pipe extrusion die (2), enters under the traction of front haulage machine (4) through initial vacuum spray sizing tank (3) again and carries out sizing, obtains internal layer core pipe (19);
2) internal layer core pipe (19) via front heating cabinet (5) to this core tube outer surface heating and melting, by applying extrusion die (7), binding resin is coated to the outer surface of internal layer core pipe (19) by applying extruder (6) and gluing extrusion die (7), fiber mesh band (18) successively twines enhancing to the internal layer core pipe (19) that is coated with behind the binding resin by the first Stetch Wrapping Machine (8) and the second Stetch Wrapping Machine (9), makes binding resin to the complete embedding of fiber mesh band (18) by rear heating cabinet (10) heating again;
The internal layer core pipe (19) of the winding that 3) step 2) obtains is drawn to rear coating die head (13) by rear haulage machine (15), the outer field resin raw material of tubing coats internal layer core pipe (19) outer surface that twined by rear coating extruder (12) and rear coating die head (13), again by final vacuum spray sizing tank (14) sizing, obtain the fiber mesh band and twine reinforced composite pipe, coil and obtain final coil pipe product through coiling pipe collecting machine (16).
6. fiber mesh band according to claim 5 twines the preparation process of reinforced composite pipe, it is characterized in that the described core pipe of step 1) extruder (1) is single screw extrusion machine, extrusion temperature is 180-230 ℃, and the circulating cooling coolant-temperature gage of initial vacuum spray sizing tank is 14-18 ℃.
7. fiber mesh band according to claim 5 twines the preparation process of reinforced composite pipe, it is characterized in that step 2) described front heating cabinet (5) heating-up temperature is 220-240 ℃, the binding resin extrusion temperature is 200-220 ℃, the rotating speed of the first Stetch Wrapping Machine (8) and the second Stetch Wrapping Machine (9) is 2-40rpm, twines tension force and is 150-600N.
8. fiber mesh band according to claim 5 twines the preparation process of reinforced composite pipe, it is characterized in that the described rear heating cabinet of step 3) (10) heating-up temperature is 220-240 ℃, rear coating extrusion temperature is 200-230 ℃, and the circulating cooling coolant-temperature gage of final vacuum spray sizing tank is 14-18 ℃.
9. fiber mesh band according to claim 5 twines the preparation process of reinforced composite pipe, and the hauling speed that it is characterized in that coiling the speed of coiling of pipe collecting machine (16) and front haulage machine (4), rear haulage machine (15) is consistent.
10. a fiber mesh band as claimed in claim 5 twines the used equipment of preparation process of reinforced composite pipe, it is characterized in that comprising the core pipe extruder (1) that arranges from the beginning to the end successively, initial vacuum spray sizing tank (3), front haulage machine (4), front heating cabinet (5), apply extruder (6), the first Stetch Wrapping Machine (8), the second Stetch Wrapping Machine (9), rear heating cabinet (10), rear coating extruder (12), final vacuum spray sizing tank (14), rear haulage machine (15) and coil pipe collecting machine (16), described core pipe extruder (1) outlet port arranges core pipe extrusion die (2), apply extruder (6) bottom coating extrusion die (7) is set, rear coating extruder (12) bottom arranges rear coating die head (13), between described rear heating cabinet (10) and the rear coating extruder (12) centralized positioning frame (11) is set.
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| CN201210502640.3A CN103016856B (en) | 2012-11-30 | 2012-11-30 | Fiber mesh tape-wound and reinforced composite pipe, preparation process and device |
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| CN201210502640.3A CN103016856B (en) | 2012-11-30 | 2012-11-30 | Fiber mesh tape-wound and reinforced composite pipe, preparation process and device |
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| CN103016856B CN103016856B (en) | 2015-01-21 |
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