CN104455792A - Fiber reinforced polyurethane winding interlayer composite tube and manufacturing method thereof - Google Patents
Fiber reinforced polyurethane winding interlayer composite tube and manufacturing method thereof Download PDFInfo
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- CN104455792A CN104455792A CN201410717119.0A CN201410717119A CN104455792A CN 104455792 A CN104455792 A CN 104455792A CN 201410717119 A CN201410717119 A CN 201410717119A CN 104455792 A CN104455792 A CN 104455792A
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- Prior art keywords
- polyurethane
- fiber reinforcement
- layer
- fiber reinforced
- reinforcement polyurethane
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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
- F16L9/16—Rigid pipes wound from sheets or strips, with or without reinforcement
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D23/00—Producing tubular articles
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- Laminated Bodies (AREA)
Abstract
The invention discloses a fiber reinforced polyurethane winding interlayer composite tube and a manufacturing method thereof. The composite tube comprises a glass reinforced plastic inside liner, a glass reinforced plastic inner structural layer, a fiber reinforced polyurethane composite interlayer and a glass reinforced plastic outer structural layer. The manufacturing method comprises the following steps: conveying a preformed Z-shaped glass fiber reinforced layer after infiltrating resin to the upper surface and one side of a rectangular polyurethane strip for laying to obtain a fiber reinforced polyurethane material; adopting a traction device to synchronously and continuously wind the laid fiber reinforced polyurethane material on the glass reinforced plastic inner structural layer to form a fiber reinforced polyurethane composite interlayer. The composite tube fully utilizes the characteristics of foam preforming and low cost of polyurethane, and improves the cross sectional moment of inertia of a tube wall to a large degree, and the glass fiber reinforced layer is enabled to form reinforced ribs in the fiber reinforced polyurethane composite interlayer through the winding technology, so that the external loading resistant rigidity of the composite tube can be greatly improved.
Description
Technical field
The invention belongs to water and wastewater piping engineering technical field, be specifically related to a kind of fiber reinforcement polyurethane and be wound around interlining composite pipes and preparation method thereof.
Background technique
Fiber reinforced plastic pipe is a kind of resin base composite pipe, has the hydraulic performance that intensity is high, corrosion-resistant, tube wall is smooth, excellent, in the urban constructions such as water and wastewater piping engineering, has a wide range of applications background.But its rigidity is low, distortion is comparatively large, higher to construction requirement.If under the condition not changing its structure, the rigidity of fiber reinforced plastic pipe be improved, must resin demand be increased, so often cause product cost too high.And often adopt definite-length-winding process in fiber reinforced plastic pipe manufacture process, due to the discontinuity of producing, manufacturing process is not easy control, manufacturing efficiency is low, and pipe workpiece quality is unstable.
Concrete pipe in the market, because concrete is cheap in price, the tube wall of made concrete pipe is thicker, makes the type pipeline have the advantage of high rigidity, but pipe shaft is heavy, hydraulic performance is relatively weak and corrosion resistance is not strong etc. the not enough use limiting concrete pipe.
Therefore engineering is craved for one under low cost prerequisite, the lower grade of the current rigidity of glass fibre reinforced plastics (burning into sand) pipeline to be made up not enough, there is again the Novel composite pipe of the good characteristics such as glass fibre reinforced plastics (burning into sand) pipeline corrosion resistance.
Summary of the invention
The object of the invention is to keep the good characteristics such as fiber reinforced plastic pipe corrosion resistance on the one hand; Under low cost prerequisite, solve the lower problem of the current rigidity of fiber reinforced plastic pipe on the other hand, multiple tube of a kind of low cost, high strength and preparation method thereof is provided.
For achieving the above object, adopt technological scheme as follows:
A kind of fiber reinforcement polyurethane is wound around interlining composite pipes, and it is followed successively by frp lining layer, glass fibre reinforced plastics inner structure layer, fiber reinforcement polyurethane composite intermediate layer, glass fibre reinforced plastics external structure layer from inside to outside;
Wherein, inside liner thickness is 1 ~ 5mm, and the thickness of inner structure layer is 1 ~ 50mm, and fiber reinforcement polyurethane composite intermediate layer is 10 ~ 300mm, and glass fibre reinforced plastics external structure layer is 1 ~ 20mm;
The rectangle polyurethane strips that described fiber reinforcement polyurethane composite intermediate layer lays glass fiber reinforced layer by upper surface and side is entwined on inner structure layer.
By such scheme, described fiber reinforcement polyurethane composite intermediate layer is one deck or two-layer; Resin-base glass fibre enhancement layer is all had between any two adjacent polyurethane cross sections.
Above-mentioned fiber reinforcement polyurethane is wound around the making method of interlining composite pipes, comprises the following steps:
1) by pipeline winding system, fw frp inside liner and inner structure layer;
2) Z-shaped glass fiber reinforced layer shaping in advance after infiltration resin is delivered to rectangle polyurethane strips upper surface and side to lay and obtain fiber reinforcement polyurethane material; By pulling equipment, the fiber reinforcement polyurethane synchronous material continuous winding laid is formed fiber reinforcement polyurethane composite intermediate layer to inner structure layer;
3) on fiber reinforcement polyurethane composite intermediate layer, adopt the continuous yarn of glass fibre and short yarn cutting to form external structure layer by continuous winding.
By such scheme, the fiber reinforcement layer thickness being positioned at polyurethane strips side surface in described fiber reinforcement polyurethane composite intermediate layer is 1 ~ 8mm.
By such scheme, step 2) in carry out polyurethane major ingredient simultaneously, foaming, solidification, the demoulding obtain polyurethane strips and then carry out laying obtaining fiber reinforcement polyurethane material.
The invention has the beneficial effects as follows:
Take full advantage of the feature of polyurethane foam pre-shaping and low cost thereof, improve tube wall cross sectional moment of inertia largely, pass through winding process, glass fiber reinforced layer is formed in fiber reinforcement polyurethane composite intermediate layer and strengthens muscle, thus, the anti-external load rigidity of composite pipe can be improved significantly.
One aspect of the present invention continues to maintain the good characteristics such as glass fibre reinforced plastics (burning into sand) pipeline corrosion resistance; On the other hand, under low cost prerequisite, solve the problem that the current rigidity of glass fibre reinforced plastics (burning into sand) pipeline is lower, in cities and towns, underground pipe network Construction Party mask has wide practical use.
Accompanying drawing explanation
Fig. 1: fiber reinforcement polyurethane is wound around interlining composite pipes longitudinal section;
Fig. 2: fiber reinforcement polyurethane composite intermediate layer longitudinal section;
Fig. 3: fiber reinforcement polyurethane two-layer compound interlayer longitudinal section;
Fig. 4: the fiber-reinforced layer of polyurethane side table lays schematic diagram;
Fig. 5: fiber reinforcement polyurethane is wound around interlining composite pipes production process charts.
Wherein, 1-inside liner; 2-glass fibre reinforced plastics inner structure layer; 3-fiber reinforcement polyurethane composite intermediate layer; 4-glass fibre reinforced plastics external structure layer; 5-rectangle polyurethane strips; 6-glass fiber reinforced layer; 7-pipeline continuous winding system; 8-pipe mould; 9-inside liner Wiring apparatus; 10-inner structure layer Wiring apparatus; 11-fiber reinforcement polyurethane composite intermediate layer makes and Wiring apparatus; 12-external structure layer Wiring apparatus.
Embodiment
Following examples explain technological scheme of the present invention further, but not as limiting the scope of the invention.
With reference to shown in accompanying drawing 1, fiber reinforcement polyurethane of the present invention is wound around interlining composite pipes, and it is followed successively by frp lining layer 1, glass fibre reinforced plastics inner structure layer 2, fiber reinforcement polyurethane composite intermediate layer 3, glass fibre reinforced plastics external structure layer 4 from inside to outside; The rectangle polyurethane strips that fiber reinforcement polyurethane composite intermediate layer 3 lays glass fiber reinforced layer by upper surface and side is entwined on inner structure layer.
The making method process that fiber reinforcement polyurethane of the present invention is wound around interlining composite pipes is as follows:
1) by pipeline winding system, fw frp inside liner and inner structure layer, wherein inside liner thickness is 1 ~ 5mm, and the thickness of inner structure layer is 1 ~ 50mm;
2) Z-shaped glass fiber reinforced layer shaping in advance after infiltration resin is delivered to rectangle polyurethane strips upper surface and side to carry out laying and obtain fiber reinforcement polyurethane material; By pulling equipment, the fiber reinforcement polyurethane synchronous material continuous winding laid is formed fiber reinforcement polyurethane composite intermediate layer to inner structure layer; Thickness is 10 ~ 300mm;
3) on fiber reinforcement polyurethane composite intermediate layer, adopt the continuous yarn of glass fibre and short yarn cutting to form external structure layer by continuous winding, thickness is 1 ~ 20mm.
With reference to accompanying drawing 2, 3, 4 with existing winding process unlike, first through material feeding, foaming, solidification, the demouldings etc. are running gear continuously, on-the-spot foaming in real time, cross section is the polyurethane of rectangle rectangular 5, glass fiber reinforced layer 6 after infiltrating resin is delivered on rectangle polyurethane strips 5 upper surface and side surface after appropriate pre-shaping (as " Z " font) process, the glass fibre reinforced plastics inner structure layer 2 being simultaneously delivered to the circular die manufacturing pipeline is together wound around, described interlayer can have one deck (accompanying drawing 2), also multilayer (accompanying drawing 2) can be had, between any two the adjacent rectangle polyurethane cross sections in every one deck composite intermediate layer, all there is resin-base glass fibre enhancement layer 6.
Utilize the feature of polyurethane foam pre-shaping and low cost thereof, improve tube wall cross sectional moment of inertia largely, by winding process, glass fiber reinforced layer is formed in fiber reinforcement polyurethane composite intermediate layer and strengthens muscle, thus, the anti-external load rigidity of composite pipe can be improved significantly.
Embodiment
With reference to shown in accompanying drawing 5;
1) on the pipe mould 8 of pipeline continuous winding system 7, polyester felt, fiberglass surfacing mat or short cutting after the glasscloth such as felt and needled mat soaks upper resin are carried out winding making inside liner by inside liner Wiring apparatus 9, makes its thickness be 1 ~ 5mm;
2) on inside liner, be wound around by inner structure layer Wiring apparatus 10 after adopting the upper resin of the glasscloth such as the continuous yarn of glass fibre and short yarn cutting leaching, form inner structure layer.The pressure rating that the thickness of inner structure layer uses according to pipeline and pipe stiffness design, thickness is 1 ~ 50mm;
3) simultaneously on another station through the running gear continuously such as material feeding, foaming, solidification, the demoulding, the polyurethane that foam in real time in scene or off-line is preformed, cross section is rectangle is rectangular, fiber reinforcement laying after infiltration resin is delivered on rectangle polyurethane upper surface and side surface after appropriate pre-shaping (as " Z " font) process and lays, to obtain fiber reinforcement polyurethane material.
4) by fiber reinforcement polyurethane material that pulling equipment will wind, made by fiber reinforcement polyurethane composite intermediate layer and the synchronous continuous winding of Wiring apparatus 11 on inner structure layer, form fiber reinforcement polyurethane composite intermediate layer, wherein between any two adjacent rectangle polyurethane cross sections, all there is resin-base glass fibre enhancement layer, the fiber reinforcement layer thickness being positioned at polyurethane side table is between 1 ~ 8mm, can select according to caliber and outer size of carrying; Composite intermediate layer can have one deck, also can have multilayer, and thickness is 10 ~ 300mm;
5) by external structure layer Wiring apparatus 12, the fabrics such as continuous for glass fibre yarn and short yarn cutting are wound around on fiber reinforcement polyurethane composite intermediate layer, form external structure layer.The pressure rating that the thickness of external structure layer uses according to pipeline and pipe stiffness design, thickness is 1 ~ 20mm.
6) finally according to actual needs, construction layer can adopt be wound around or spraying coating process making external protection outside.
Claims (6)
1. fiber reinforcement polyurethane is wound around an interlining composite pipes, it is characterized in that being followed successively by frp lining layer, glass fibre reinforced plastics inner structure layer, fiber reinforcement polyurethane composite intermediate layer, glass fibre reinforced plastics external structure layer from inside to outside;
Wherein, inside liner thickness is 1 ~ 5mm, and the thickness of inner structure layer is 1 ~ 50mm, and fiber reinforcement polyurethane composite intermediate layer is 10 ~ 300mm, and glass fibre reinforced plastics external structure layer is 1 ~ 20mm;
The rectangle polyurethane strips that described fiber reinforcement polyurethane composite intermediate layer lays glass fiber reinforced layer by upper surface and side is entwined on inner structure layer.
2. fiber reinforcement polyurethane is wound around interlining composite pipes as claimed in claim 1, it is characterized in that described fiber reinforcement polyurethane composite intermediate layer is one deck or two-layer; Resin-base glass fibre enhancement layer is all had between any two adjacent polyurethane cross sections.
3. fiber reinforcement polyurethane described in claim 1 is wound around the making method of interlining composite pipes, it is characterized in that comprising the following steps:
1) by pipeline winding system, fw frp inside liner and inner structure layer;
2) Z-shaped glass fiber reinforced layer shaping in advance after infiltration resin is delivered to rectangle polyurethane strips upper surface and side to carry out laying and obtain fiber reinforcement polyurethane material; By pulling equipment, the fiber reinforcement polyurethane synchronous material continuous winding laid is formed fiber reinforcement polyurethane composite intermediate layer to inner structure layer;
3) on fiber reinforcement polyurethane composite intermediate layer, adopt the continuous yarn of glass fibre and short yarn cutting to form external structure layer by continuous winding.
4. fiber reinforcement polyurethane is wound around the making method of interlining composite pipes as claimed in claim 3, it is characterized in that the fiber reinforcement layer thickness being positioned at polyurethane strips side surface in described fiber reinforcement polyurethane composite intermediate layer is 1 ~ 8mm.
5. fiber reinforcement polyurethane is wound around the making method of interlining composite pipes as claimed in claim 3, it is characterized in that step 2) in carry out polyurethane major ingredient simultaneously, foaming, solidification, the demoulding obtain polyurethane strips and then carry out laying obtaining fiber reinforcement polyurethane material.
6. fiber reinforcement polyurethane is wound around the making method of interlining composite pipes as claimed in claim 3, it is characterized in that described fiber reinforcement polyurethane bar is that on-the-spot online foaming or off-line are preformed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410717119.0A CN104455792B (en) | 2014-12-01 | 2014-12-01 | Fiber reinforcement polyurethane is wound around interlining composite pipes and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410717119.0A CN104455792B (en) | 2014-12-01 | 2014-12-01 | Fiber reinforcement polyurethane is wound around interlining composite pipes and preparation method thereof |
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| Publication Number | Publication Date |
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| CN104455792A true CN104455792A (en) | 2015-03-25 |
| CN104455792B CN104455792B (en) | 2016-08-31 |
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| CN201410717119.0A Active CN104455792B (en) | 2014-12-01 | 2014-12-01 | Fiber reinforcement polyurethane is wound around interlining composite pipes and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111550614A (en) * | 2020-06-09 | 2020-08-18 | 南京新核复合材料有限公司 | Nuclear power high-rigidity direct-buried glass fiber reinforced plastic pipeline and manufacturing method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3960630A (en) * | 1973-07-25 | 1976-06-01 | Muanyagipari Kutato Intezet | process and apparatus for the production of wound sandwich structures |
| US4009736A (en) * | 1974-12-06 | 1977-03-01 | Owens-Corning Fiberglas Corporation | Sandwich wall glass fiber reinforced construction and method of making same |
| CN103557378A (en) * | 2013-11-13 | 2014-02-05 | 武汉理工大学 | High-stiffness composite tube formed through fixed length winding and manufacturing method thereof |
-
2014
- 2014-12-01 CN CN201410717119.0A patent/CN104455792B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3960630A (en) * | 1973-07-25 | 1976-06-01 | Muanyagipari Kutato Intezet | process and apparatus for the production of wound sandwich structures |
| US4009736A (en) * | 1974-12-06 | 1977-03-01 | Owens-Corning Fiberglas Corporation | Sandwich wall glass fiber reinforced construction and method of making same |
| CN103557378A (en) * | 2013-11-13 | 2014-02-05 | 武汉理工大学 | High-stiffness composite tube formed through fixed length winding and manufacturing method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111550614A (en) * | 2020-06-09 | 2020-08-18 | 南京新核复合材料有限公司 | Nuclear power high-rigidity direct-buried glass fiber reinforced plastic pipeline and manufacturing method thereof |
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| Publication number | Publication date |
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| CN104455792B (en) | 2016-08-31 |
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