CN104455792B - Fiber reinforcement polyurethane is wound around interlining composite pipes and preparation method thereof - Google Patents
Fiber reinforcement polyurethane is wound around interlining composite pipes and preparation method thereof Download PDFInfo
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- CN104455792B CN104455792B CN201410717119.0A CN201410717119A CN104455792B CN 104455792 B CN104455792 B CN 104455792B CN 201410717119 A CN201410717119 A CN 201410717119A CN 104455792 B CN104455792 B CN 104455792B
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- Prior art keywords
- fiber reinforcement
- polyurethane
- layer
- reinforcement polyurethane
- intermediate layer
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Classifications
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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)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Laminated Bodies (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The invention discloses a kind of fiber reinforcement polyurethane and be wound around interlining composite pipes and preparation method thereof.It is followed successively by frp lining layer, fiberglass inner structural layer, fiber reinforcement polyurethane composite intermediate layer, fiberglass outer structural layer from inside to outside.By after infiltration resin, the Z-shaped glass fiber reinforced layer of molding in advance is delivered to rectangle polyurethane strips upper surface and side is laid and obtained fiber reinforcement polyurethane material；Fiber reinforcement polyurethane composite intermediate layer will be formed on the fiber reinforcement polyurethane synchronous material continuous winding laid to inner structural layer by pulling device.Take full advantage of the feature of polyurethane foam preforming and low cost thereof, improve tube wall cross sectional moment of inertia largely, pass through winding process, glass fiber reinforced layer is made to form enhancing muscle in fiber reinforcement polyurethane composite intermediate layer, thus, it is possible to the anti-external load rigidity of multiple tube is significantly increased.
Description
Technical field
The invention belongs to water and wastewater piping engineering technical field, be specifically related to a kind of fiber reinforcement polyurethane be wound around interlining composite pipes and
Its manufacture method.
Background technology
GRP pipe is a kind of resin base composite pipe, has the hydraulic performance that intensity is high, corrosion-resistant, tube wall is smooth, excellent,
Background is had a wide range of applications in the urban constructions such as water and wastewater piping engineering.But its rigidity is low, deformation is relatively big, to construction requirement
Higher.If under conditions of not changing its structure, the rigidity of GRP pipe to be improved, it is necessary to increase resin demand, so
Often lead to product cost too high.And, GRP pipe manufacture process often uses definite-length-winding process, owing to producing
Discontinuity, technical process is not easily controlled, production efficiency is low, and pipe workpiece quality is unstable.
Pipe of concrete in the market, due to concrete in price cheap, the tube wall of made pipe of concrete is thicker, makes
The type pipeline has an advantage of high rigidity, but the not enough limit such as pipe shaft weight, hydraulic performance are relatively weak and corrosion resistance is the strongest
Make the use of pipe of concrete.
Therefore crave for one in engineering and can make up fiberglass (burning into sand) the pipeline relatively low grade of current rigidity not under low cost premise
Foot, has again the Novel composite pipe of the good characteristics such as fiberglass (burning into sand) pipeline corrosion resistance.
Summary of the invention
Present invention aim on the one hand keeping the good characteristics such as GRP pipe corrosion resistance；On the other hand under low cost premise
Solve the relatively low problem of the current rigidity of GRP pipe, it is provided that a kind of low cost, the compound pipeline complex pipeline and preparation method thereof of high intensity.
For reaching above-mentioned purpose, use technical scheme as follows:
A kind of fiber reinforcement polyurethane is wound around interlining composite pipes, and it is followed successively by frp lining layer, fiberglass inner structure from inside to outside
Layer, fiber reinforcement polyurethane composite intermediate layer, fiberglass outer structural layer；
Wherein, inner liner thickness is 1～5mm, and the thickness of inner structural layer is 1～50mm, fiber reinforcement polyurethane composite intermediate layer
Being 10～300mm, fiberglass outer structural layer is 1～20mm；
Described fiber reinforcement polyurethane composite intermediate layer is laid including the rectangle polyurethane strips of glass fiber reinforced layer by upper surface and side
It is entwined on structure sheaf.
By such scheme, described fiber reinforcement polyurethane composite intermediate layer is one layer or two-layer；The polyurethane cross section that any two is adjacent
Between all have resin-base glass fibre enhancement layer.
Above-mentioned fiber reinforcement polyurethane is wound around the manufacture method of interlining composite pipes, comprises the following steps:
1) by pipeline winding system, fw frp inner liner and inner structural layer；
2) by after infiltration resin, the Z-shaped glass fiber reinforced layer of molding in advance is delivered to rectangle polyurethane strips upper surface and side is applied
If obtaining fiber reinforcement polyurethane material；The fiber reinforcement polyurethane synchronous material continuous winding that will have been laid by pulling device
Fiber reinforcement polyurethane composite intermediate layer is formed on inner structural layer；
3) the continuous yarn of glass fibre and chopped yarn is used to form external structure by continuous winding on fiber reinforcement polyurethane composite intermediate layer
Layer.
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 simultaneously polyurethane major ingredient, foam, solidify, the demoulding obtains polyurethane strips and then enters
Row lays and obtains fiber reinforcement polyurethane material.
The invention has the beneficial effects as follows:
Take full advantage of the feature of polyurethane foam preforming and low cost thereof, improve tube wall cross sectional moment of inertia largely,
By winding process, glass fiber reinforced layer is made to form enhancing muscle in fiber reinforcement polyurethane composite intermediate layer, thus, it is possible to greatly
Amplitude ground improves the anti-external load rigidity of multiple tube.
One aspect of the present invention continues to maintain the good characteristics such as fiberglass (burning into sand) pipeline corrosion resistance；On the other hand, at low one-tenth
Under this premise, solving the problem that the current rigidity of fiberglass (burning into sand) pipeline is relatively low, in cities and towns, underground pipe network Construction Party's mask has
It is widely applied prospect.
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-inner liner；2-fiberglass inner structural layer；3-fiber reinforcement polyurethane composite intermediate layer；4-fiberglass outer structural layer；
5-rectangle polyurethane strips；6-glass fiber reinforced layer；7-pipeline continuous winding system；8-pipe mould；9-inner liner Wiring apparatus；
10-inner structural layer Wiring apparatus；11-fiber reinforcement polyurethane composite intermediate layer makes and Wiring apparatus；12-outer structural layer Wiring apparatus.
Detailed description of the invention
Following example explain technical scheme further, but not as limiting the scope of the invention.
Referring to the drawings shown in 1, fiber reinforcement polyurethane of the present invention is wound around interlining composite pipes, and it is followed successively by fiberglass from inside to outside
Lining 1, fiberglass inner structural layer 2, fiber reinforcement polyurethane composite intermediate layer 3, fiberglass outer structural layer 4；The poly-ammonia of fiber reinforcement
The rectangle polyurethane strips that ester composite intermediate layer 3 is laid glass fiber reinforced layer by upper surface and side is entwined on inner structural layer.
The manufacture 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 inner liner and inner structural layer, wherein inner liner thickness is 1～5mm, interior
The thickness of structure sheaf is 1～50mm；
2) by after infiltration resin, the Z-shaped glass fiber reinforced layer of molding in advance is delivered to rectangle polyurethane strips upper surface and side is entered
Row lays and obtains fiber reinforcement polyurethane material；By pulling device by continuous for the fiber reinforcement polyurethane synchronous material laid
It is wound on inner structural layer formation fiber reinforcement polyurethane composite intermediate layer；Thickness is 10～300mm；
3) the continuous yarn of glass fibre and chopped yarn is used to form external structure by continuous winding on fiber reinforcement polyurethane composite intermediate layer
Layer, thickness is 1～20mm.
Referring to the drawings 2,3,4 from existing winding process unlike, first pass through material feeding, foam, solidify, the demoulding etc. is transported continuously
Luggage is put, on-the-spot foaming in real time, cross section be the polyurethane strip 5 of rectangle, by the glass fiber reinforcement after infiltration resin
Layer 6 is delivered on rectangle polyurethane strips 5 upper surface and side surface, simultaneously after appropriateness preforming (such as " Z " font) processes
Together be delivered to manufacture pipeline circular die fiberglass inner structural layer 2 on be wound, described interlayer can have one layer (attached
Fig. 2), it is possible to have multilamellar (accompanying drawing 2), between the rectangle polyurethane cross section that any two in each layer of composite intermediate layer is adjacent, all have
Resin-base glass fibre enhancement layer 6.
Utilize the feature of polyurethane foam preforming and low cost thereof, improve tube wall cross sectional moment of inertia largely, by twining
Winding technologe, makes glass fiber reinforced layer form enhancing muscle in fiber reinforcement polyurethane composite intermediate layer, thus, it is possible to significantly
Improve the anti-external load rigidity of multiple tube.
Embodiment
Referring to the drawings shown in 5；
1) on the pipe mould 8 of pipeline continuous winding system 7, by polyester felt, fiberglass surfacing mat or chopped mat and pin
Be wound making inner liner by inner liner Wiring apparatus 9 after knitting the upper resin of the glass fiber cloth such as felt leaching so that it is thickness be 1～
5mm；
2) on inner liner, after using the upper resin of the glass fiber cloth such as the continuous yarn of glass fibre and chopped yarn leaching, inner structural layer is passed through
Wiring apparatus 10 is wound, and forms inner structural layer.Pressure rating and pipe stiffness that the thickness of inner structural layer uses according to pipeline set
Meter, thickness is 1～50mm；
3) simultaneously on another station through material feeding, foam, solidify, the running gear continuously such as the demoulding, on-the-spot foaming in real time or from
Line preforming, cross section be the polyurethane strip of rectangle, by the fiber reinforcement laying after infiltration resin through appropriateness preforming (as
" Z " font) process after be delivered on rectangle polyurethane upper surface and side surface lay, to obtain fiber reinforcement polyurethane material
Material.
4) the fiber reinforcement polyurethane material that will have been wound by pulling device, is made by fiber reinforcement polyurethane composite intermediate layer
And Wiring apparatus 11 synchronizes continuous winding to inner structural layer, form fiber reinforcement polyurethane composite intermediate layer, any two of which phase
Between adjacent rectangle polyurethane cross section, all having resin-base glass fibre enhancement layer, the fiber reinforcement layer thickness being positioned at polyurethane side table is
Between 1～8mm, can select with outer load size according to caliber；Composite intermediate layer can have one layer, it is possible to has multilamellar, and thickness is
10～300mm；
5) on fiber reinforcement polyurethane composite intermediate layer, outer structural layer Wiring apparatus 12 is passed through by continuous for glass fibre yarn and chopped yarn
It is wound in fabric, forms outer structural layer.Pressure rating and pipe stiffness that the thickness of outer structural layer uses according to pipeline design,
Thickness is 1～20mm.
6) finally can use on outer structural layer and be wound around or spraying coating process making external protection according to actual needs.
Claims (5)
1. a fiber reinforcement polyurethane is wound around interlining composite pipes, it is characterised in that be followed successively by frp lining layer, glass from inside to outside
Glass steel inner structural layer, fiber reinforcement polyurethane composite intermediate layer, fiberglass outer structural layer；Described fiber reinforcement polyurethane composite intermediate layer
The rectangle polyurethane strips being laid glass fiber reinforced layer by upper surface and side is entwined on inner structural layer；
Described fiber reinforcement polyurethane is wound around interlining composite pipes and is prepared as follows:
1) by pipeline winding system, fw frp inner liner and inner structural layer；
2) by after infiltration resin, the Z-shaped glass fiber reinforced layer of molding in advance is delivered to rectangle polyurethane strips upper surface and side is entered
Row lays and obtains fiber reinforcement polyurethane material；By pulling device by continuous for the fiber reinforcement polyurethane synchronous material laid
It is wound on inner structural layer formation fiber reinforcement polyurethane composite intermediate layer；
3) the continuous yarn of glass fibre and chopped yarn is used to form external structure by continuous winding on fiber reinforcement polyurethane composite intermediate layer
Layer
Wherein, inner liner thickness is 1～5mm, and the thickness of inner structural layer is 1～50mm, fiber reinforcement polyurethane composite intermediate layer
Being 10～300mm, fiberglass outer structural layer is 1～20mm.
2. fiber reinforcement polyurethane is wound around interlining composite pipes as claimed in claim 1, it is characterised in that described fiber reinforcement polyurethane
Composite intermediate layer is one layer or two-layer；Resin-base glass fibre enhancement layer is all had between the polyurethane cross section that any two is adjacent.
3. fiber reinforcement polyurethane is wound around the manufacture method of interlining composite pipes as claimed in claim 1, it is characterised in that described fiber
The fiber reinforcement layer thickness being positioned at polyurethane strips side surface in enhancing polyurethane composite intermediate layer is 1～8mm.
4. fiber reinforcement polyurethane is wound around the manufacture method of interlining composite pipes as claimed in claim 1, it is characterised in that step 2)
Middle carry out simultaneously polyurethane major ingredient, foam, solidify, the demoulding obtains polyurethane strips and then carries out laying obtaining fiber reinforcement polyurethane
Material.
5. fiber reinforcement polyurethane is wound around the manufacture method of interlining composite pipes as claimed in claim 1, it is characterised in that described fiber
Strengthening polyurethane strips is on-the-spot online foaming or off-line preforming.
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 |
Applications Claiming Priority (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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104455792A CN104455792A (en) | 2015-03-25 |
| CN104455792B true CN104455792B (en) | 2016-08-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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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 |
Country Status (1)
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Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| HU177694B (en) * | 1973-07-25 | 1981-12-28 | Foevarosi Mueanyagipari Vall | Method for making sandwich-type wounded bodies |
| US4009736A (en) * | 1974-12-06 | 1977-03-01 | Owens-Corning Fiberglas Corporation | Sandwich wall glass fiber reinforced construction and method of making same |
| CN103557378B (en) * | 2013-11-13 | 2016-03-09 | 武汉理工大学 | Wrapping formed high rigidity composite pipe of a kind of fixed length and preparation method thereof |
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| CN104455792A (en) | 2015-03-25 |
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