CN113007459A - High-strength bamboo fiber wound composite pipe and preparation method thereof - Google Patents
High-strength bamboo fiber wound composite pipe and preparation method thereof Download PDFInfo
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- CN113007459A CN113007459A CN202110210426.XA CN202110210426A CN113007459A CN 113007459 A CN113007459 A CN 113007459A CN 202110210426 A CN202110210426 A CN 202110210426A CN 113007459 A CN113007459 A CN 113007459A
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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
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- 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
- B29D23/001—Pipes; Pipe joints
Abstract
The invention discloses a high-strength bamboo fiber winding composite pipe and a preparation method thereof, the high-strength bamboo fiber winding composite pipe sequentially comprises an inner liner layer, a reinforcing layer and an outer protective layer from inside to outside, and belongs to the field of bamboo winding composite pipes, a sheet material of the inner liner layer is wound on the surface of a mould roller, is compacted by a pressure roller and is finally cured to obtain the inner liner layer, the sheet material of the bamboo fiber inner liner consists of a film layer and a bamboo fiber layer adhered on the film layer, and the bamboo fiber layer is formed by adding glue into a bamboo fiber net; winding the bamboo fiber reinforced sheet on the lining layer, compacting by a pressure roller, and curing to obtain a reinforced layer; and spraying the outer protective layer glue on the reinforcing layer, and curing to obtain the outer protective layer. The invention has the beneficial effects that: the inner liner layer consists of a film layer and a bamboo fiber layer, so that the films and the glue can be tightly bonded, and the strength of the inner liner layer can be improved by the added bamboo fiber layer; inside the film, through control glue and fibrous input, and then the solidification thickness of control inner liner, it is more convenient to produce liner glue parcel.
Description
Technical Field
The invention relates to the field of bamboo-wound composite pipes, in particular to a high-strength bamboo fiber-wound composite pipe and a preparation method thereof.
Background
At present, in water supply and drainage engineering and petrochemical engineering anticorrosion occasions, polyvinyl chloride pipes, polyethylene pipes, glass steel pipes, glass fiber reinforced plastic sand inclusion pipes and the like are generally adopted in used pipelines, and most of the pipelines have obvious advantages and disadvantages and are not environment-friendly. Common pipes such as polyvinyl chloride pipes and polyethylene are light, smooth and corrosion-resistant, but are insufficient in rigidity and strength, and raw materials are synthetic products of petroleum products, and the products and waste materials are not recyclable. Therefore, the pipeline product consumes a great amount of precious petroleum resources and causes environmental pollution. The bamboo-wound composite pipe is a biomass pipeline which is formed by compounding bamboo serving as a reinforcing material and resin serving as an adhesive by adopting an automatic winding process and has strong pressure resistance. The method has the advantages of low carbon, environmental protection, cyclic utilization of resources and low cost; however, the existing bamboo-wound composite pipe manufacturing process has many defects, the quality of the manufactured bamboo-wound composite pipe is not ideal enough, for example, the lining layer of the bamboo-wound composite pipe produced in the prior art has insufficient strength, the thickness of the lining layer is not easy to control in the production process, and the production time is wasted; the strength of the produced reinforced layer is not enough, and the manufacturing process is complicated.
In view of the above, the applicant has made an intensive study on the above-mentioned defects in the prior art, and has made this invention.
Disclosure of Invention
The method aims to overcome the defects existing in the manufacturing process of the bamboo-wound composite pipe in the prior art and the unsatisfactory quality of the manufactured bamboo-wound composite pipe, for example, the lining layer of the bamboo-wound composite pipe produced in the prior art has a series of problems of insufficient strength, difficult control of the thickness of the lining layer in the production process, much waste of production time and the like. The specific technical scheme is as follows:
the utility model provides a high strength bamboo fiber winding composite pipe, includes inner liner, enhancement layer and outer inoxidizing coating from inside to outside in proper order, the inner liner is twined the one deck postcure and is obtained on the mould roller surface at least by bamboo fiber lining sheet, bamboo fiber lining sheet is in by thin layer and adhesion bamboo fibrous layer on the thin layer constitutes, bamboo fibrous layer adds glue by the bamboo fibre web and forms.
In the prior art, the lining layer of the bamboo-wound composite pipe only comprises a film and glue, specifically, the film is coated with a layer of glue, and finally the lining layer is formed by curing, because the surface of the film is smooth, the bonding effect between the film and the glue is poor, and the thickness of the lining layer is not easy to control in the production process, repeated curing is needed, the production time is wasted, and the strength of the lining layer is not good enough; compared with the prior art, the lining layer consists of the film layer and the bamboo fiber layer adhered to the film layer, so that the film and the glue are bonded more tightly, and the strength of the lining layer can be improved by the bamboo fiber layer added in the lining layer; glue parcel when production of this kind of inner liner can be through control glue and fibrous input inside the film, and then control the solidification thickness of inner liner, and product production is more convenient, efficiency is higher.
Preferably, the weight ratio of the bamboo fibers to the glue in the bamboo fiber layer is 1: (0.5-1.5).
Preferably, the length of the bamboo fiber is 60-150 mm, and the diameter of the bamboo fiber is 0.1-0.3 mm.
Preferably, the glue comprises one or more mixed resins of urea-formaldehyde resin, unsaturated polyester resin, epoxy resin, phenolic resin and polyurethane resin.
Preferably, the reinforcing layer is obtained by winding at least one layer of bamboo fiber reinforced sheet material on a mold roller wound with an inner liner layer and then curing, wherein the bamboo fiber reinforced sheet material comprises a carrier cloth and bamboo stripes uniformly fixed on the carrier cloth.
In the prior art, the reinforcement layer is formed by winding and finally curing the end-to-end connected bamboo skin on a die roller after being coated with glue, and the glue cannot well bond and cure the bamboo skin due to the large gap between the bamboo skins, so that the strength of the reinforcement layer formed by final curing is insufficient; compare in prior art, the enhancement layer is formed by carrier cloth and the solidification of the thin bamboo strips used for weaving of evenly fixing on carrier cloth, and not only carrier cloth can strengthen enhancement layer bulk strength, can also be more remain glue inside the enhancement layer, further promote enhancement layer intensity.
Preferably, the bamboo skin is fixed on the carrier cloth by sewing or spunlacing.
Preferably, the carrier cloth is a non-woven fabric or a mesh cloth.
Preferably, a fiber filling layer is laid between the bamboo skin and the carrier cloth and on the upper surface of the bamboo skin.
Lay one deck fibre filling layer on thin bamboo strips used for weaving surface, can further fill the clearance between the thin bamboo strips used for weaving in the enhancement layer to absorption glue that can be better increases the inside bonding degree of enhancement layer, the intensity of better promotion enhancement layer.
Preferably, the fiber filling layer is formed by adding glue into short fiber nets which are uniformly distributed.
Preferably, the bamboo skin is laid with at least one layer on the carrier cloth, and the length direction of the bamboo skin is perpendicular or parallel to the carrier cloth.
Preferably, the bamboo strips are laid on the carrier cloth in two layers, and the length directions of the upper layer and the lower layer of the bamboo strips are perpendicular to and parallel to the carrier cloth respectively.
Preferably, the bamboo splits are laid on the carrier cloth to form three layers, and the included angle between any two layers of the bamboo splits in the length direction is 60 degrees.
The invention also relates to a preparation method of the high-strength bamboo fiber wound composite pipe, which comprises the following steps:
winding a bamboo fiber lining sheet on the surface of a mold roller, arranging a pressure roller on the upper part of the mold roller to compact the bamboo fiber lining sheet wound on the mold roller, and curing glue in the bamboo fiber lining sheet to obtain a lining layer;
winding the bamboo fiber reinforced sheet on an inner liner layer on a mold roller, compacting the bamboo fiber reinforced sheet wound on the inner liner layer by a pressure roller on the upper part of the mold roller, and curing glue to obtain a reinforced layer;
and thirdly, spraying the outer protective glue on the reinforcing layer of the die roller, and carrying out blade coating and curing to obtain the outer protective layer.
Preferably, the curing temperature of the glue in the first step is 110-.
Preferably, the pressure roll pressure is maintained at 20-40N in step one.
Preferably, the curing temperature of the glue in the second step is 110-.
Preferably, the inner liner layer is prepared by the following steps:
step 1.1, flatly paving the film on a film conveying device, and allowing bamboo fibers to fall on the surface of the film through air-laid net to form a uniform bamboo fiber net;
step 1.2, winding and attaching a film to a mold roller, attaching bamboo fibers on the film to a position between the film and the surface of the mold roller, and uniformly feeding glue to the bamboo fibers by using a glue feeding device before the film is attached to the surface of the mold roller;
and 1.3, after the film is completely attached to the surface of the mold roller, applying pressure by using a pressure roller to uniformly distribute glue on the inner side of the film, and curing to obtain the lining layer.
Compared with the prior art, the existing production process of the inner liner is to wind a film on a mould roller and then pour glue, the process method is easy to cause waste of the glue in the operation process, the thickness of the inner liner cannot be controlled in one-time operation, or the inner liner can reach a certain thickness only by carrying out multiple times of curing, the operation is complex, the time waste is large, and the condition that bamboo fibers and the glue are not uniformly distributed after the inner liner is cured easily occurs, so that the product quality is influenced; the method of laying the bamboo fibers and the glue on the film in advance can enable the glue to be better bonded with the film and the bamboo fibers, better keep the consistency of the thickness of each part of the lining layer and easily control the putting proportion of the glue and the fibers during operation. In the actual production process, can be according to the production demand, at first the many films of rolling on the coiling mechanism, carry out bamboo fibre and glue again and lay, can further strengthen the dampproofing effect of inner liner.
Preferably, in step 1.2, the glue feeding device is installed right above the joint of the film and the mold roller or right above the bamboo fiber net in front of the mold roller.
Preferably, in step 1.1, before the bamboo fibers fall on the surface of the film, a layer of glue for bonding the bamboo fibers is firstly coated on the surface of the film.
Preferably, the reinforcing layer is prepared by the following steps:
step 2.1, spreading the carrier cloth on a carrier cloth conveying device, and spreading bamboo splits on the carrier cloth;
step 2.2, laying a layer of bamboo fiber net on the bamboo skin, and fixing the bamboo fiber net and the bamboo skin on a carrier cloth by adopting a sewing or spunlace mode;
2.3, winding and attaching the carrier cloth on an inner liner of the mold roller, and enabling the bamboo skin to be located between the carrier cloth and the inner liner, wherein glue is uniformly fed to the bamboo skin by adopting a glue feeding device before the carrier cloth is attached to the surface of the mold roller;
and 2.4, after the carrier cloth is completely attached to the surface of the lining layer on the mold roller, applying pressure to the pressure roller to uniformly distribute the glue on the inner side of the carrier cloth on the inner side of the pressure roller, and then curing to obtain the reinforcing layer.
In the production of the enhancement layer in the prior art, the thin bamboo strips are connected end to form thin bamboo strip strips, then the thin bamboo strip strips are coated with resin and then wound on the inner liner, and the enhancement layer is formed by curing; the weaving process of the long bamboo strips is complex and tedious, and the arrangement, overlapping and combination modes among the bamboo strips are few, so that the bamboo strip weaving machine can not well adapt to the production requirements of different structures. Compared with the prior art, the bamboo skin is paved on the carrier cloth and then fixed by sewing, so that the rolled morphological structure of the bamboo skin can be flexibly changed, and more different process requirements are met.
Preferably, in step 2.1, a layer of bamboo fiber net is laid before the bamboo skin is laid on the carrier cloth.
Lay a layer of bamboo fibre web in advance on the carrier cloth, can also better absorption glue, make bonding between the enhancement layer inside better, more tough, further strengthen the enhancement layer intensity.
Has the advantages that:
the technical scheme of the invention has the following beneficial effects:
(1) in the prior art, the lining layer of the bamboo-wound composite pipe only comprises a film and glue, specifically, the film is coated with a layer of glue, and finally the lining layer is formed by curing, because the surface of the film is smooth, the bonding effect between the film and the glue is poor, and the thickness of the lining layer is not easy to control in the production process, repeated curing is needed, the production time is wasted, and the strength of the lining layer is not good enough; compared with the prior art, the lining layer consists of the film layer and the bamboo fiber layer adhered to the film layer, so that the film and the glue are bonded more tightly, and the strength of the lining layer can be improved by the bamboo fiber layer added in the lining layer; glue parcel when production of this kind of inner liner can be through control glue and fibrous input inside the film, and then control the solidification thickness of inner liner, and product production is more convenient, efficiency is higher.
In the prior art, the reinforcement layer is formed by winding and finally curing the end-to-end connected bamboo skin on a die roller after being coated with glue, and the glue cannot well bond and cure the bamboo skin due to the large gap between the bamboo skins, so that the strength of the reinforcement layer formed by final curing is insufficient; compare in prior art, the enhancement layer is formed by carrier cloth and the solidification of the thin bamboo strips used for weaving of evenly fixing on carrier cloth, and not only carrier cloth can strengthen enhancement layer bulk strength, can also be more remain glue inside the enhancement layer, further promote enhancement layer intensity.
(2) Lay one deck fibre filling layer on thin bamboo strips used for weaving surface, can further fill the clearance between the thin bamboo strips used for weaving in the enhancement layer to absorption glue that can be better increases the adhesion degree between the enhancement layer, the intensity of better promotion enhancement layer.
(3) Compared with the prior art, the existing production process of the inner liner is to wind a film on a mould roller and then pour glue, the process method is easy to cause waste of the glue in the operation process, the thickness of the inner liner cannot be controlled in one-time operation, or the inner liner can reach a certain thickness only by carrying out multiple times of curing, the operation is complex, the time waste is large, and the condition that bamboo fibers and the glue are not uniformly distributed after the inner liner is cured easily occurs, so that the product quality is influenced; the method of laying the bamboo fibers and the glue on the film in advance can enable the glue to be better bonded with the film and the bamboo fibers, better keep the consistency of the thickness of each part of the lining layer and easily control the putting proportion of the glue and the fibers during operation. In the actual production process, can be according to the production demand, at first the many films of rolling on the coiling mechanism, carry out bamboo fibre and glue again and lay, can further strengthen the dampproofing effect of inner liner.
In the production of the enhancement layer in the prior art, the thin bamboo strips are connected end to form thin bamboo strip strips, then the thin bamboo strip strips are coated with resin and then wound on the inner liner, and the enhancement layer is formed by curing; the weaving process of the long bamboo strips is complex and tedious, and the arrangement, overlapping and combination modes among the bamboo strips are few, so that the bamboo strip weaving machine can not well adapt to the production requirements of different structures. Compared with the prior art, the bamboo skin is paved on the carrier cloth and then fixed by sewing, so that the rolled morphological structure of the bamboo skin can be flexibly changed, and more different process requirements are met.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic view of a preferred bamboo-wrapped composite pipe product according to the present invention;
FIG. 2 is a schematic view of a production line of a preferred bamboo-wrapped composite pipe production process of the present invention.
In the figure: 1. a film roll feeding device; 2. a bamboo fiber feeding device; 3. a film conveying device;
4. a rubber feeding device for the inner liner; 5. a winding device; 6. a carrier cloth roll feeding device; 7. a fiber feeding device;
8. a bamboo skin feeding device; 9. a bamboo skin fixing device; 10. a carrier cloth conveying device 41 and a reinforcing layer glue conveying device;
51. a pressure roller; 52. a mold roll; 100. an inner liner layer; 200. an enhancement layer; 300. and an outer protective layer.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
As shown in fig. 1, the high-strength bamboo fiber wound composite pipe sequentially comprises an inner liner 100, a reinforcing layer 200 and an outer protective layer 300 from inside to outside, wherein the inner liner 100 is obtained by winding at least one layer of bamboo fiber lining sheet material on the surface of a mold roller 52 and then curing, the bamboo fiber lining sheet material is composed of a film layer and a bamboo fiber layer adhered on the film layer, and the bamboo fiber layer is formed by adding glue into a bamboo fiber net.
In the prior art, the lining layer of the bamboo-wound composite pipe only comprises a film and glue, specifically, the film is coated with a layer of glue, and finally the lining layer is formed by curing, because the surface of the film is smooth, the bonding effect between the film and the glue is poor, and the thickness of the lining layer is not easy to control in the production process, repeated curing is needed, the production time is wasted, and the strength of the lining layer is not good enough; compared with the prior art, the lining layer consists of the film layer and the bamboo fiber layer adhered to the film layer, so that the film and the glue are bonded more tightly, and the strength of the lining layer can be improved by the bamboo fiber layer added in the lining layer; glue parcel when production of this kind of inner liner can be through control glue and fibrous input inside the film, and then control the solidification thickness of inner liner, and product production is more convenient, efficiency is higher.
As a preferred embodiment, the innermost layer of the inner liner 100 is pre-wrapped with a film layer.
As a preferred embodiment, the weight ratio of the bamboo fibers in the bamboo fiber layer to the glue is 1: (0.5-1.5).
The inner liner 100 formed by the bamboo fiber and the glue put in according to the proportion has better strength.
In a preferred embodiment, the bamboo fibers have a length of 60 to 150mm and a diameter of 0.1 to 0.3 mm.
In a preferred embodiment, the glue comprises one or more of mixed resin of urea-formaldehyde resin, unsaturated polyester resin, epoxy resin, phenolic resin and polyurethane resin.
In a preferred embodiment, the reinforcement layer 200 is obtained by winding at least one layer of a bamboo fiber-reinforced sheet material including a carrier cloth and bamboo strips uniformly fixed on the carrier cloth around a mold roll 52 around which the inner liner 100 is wound and then curing the same.
In the prior art, the reinforcement layer is formed by winding and finally curing the end-to-end connected bamboo skin on a die roller after being coated with glue, and the glue cannot well bond and cure the bamboo skin due to the large gap between the bamboo skins, so that the strength of the reinforcement layer formed by final curing is insufficient; compare in prior art, the enhancement layer is formed by carrier cloth and the solidification of the thin bamboo strips used for weaving of evenly fixing on carrier cloth, and not only carrier cloth can strengthen enhancement layer bulk strength, can also be more remain glue inside the enhancement layer, further promote enhancement layer intensity.
In a preferred embodiment, the bamboo skin is fixed on the carrier cloth by sewing or water punching.
In a preferred embodiment, the carrier cloth is a nonwoven or mesh cloth.
In a preferred embodiment, a fiber filling layer is laid between the bamboo skin and the carrier cloth and on the upper surface of the bamboo skin.
As a preferred embodiment, the fibrous filler layer is formed by a uniformly distributed web of short fibers with glue added thereto.
Lay one deck fibre filling layer on thin bamboo strips used for weaving surface, can further fill the clearance between the thin bamboo strips used for weaving in the enhancement layer to absorption glue that can be better increases the adhesion degree between the enhancement layer, the intensity of better promotion enhancement layer.
In a preferred embodiment, the bamboo skin is laid on the carrier cloth by at least one layer, and the length direction of the bamboo skin is perpendicular or parallel to the carrier cloth.
In a preferred embodiment, the bamboo skin is laid on the carrier cloth in two layers, and the length directions of the upper and lower layers of bamboo skin are respectively perpendicular and parallel to the carrier cloth.
As a preferred embodiment, the bamboo splits are laid on the carrier cloth in three layers, and the included angle between the length directions of any two layers of bamboo splits is 60 °.
As shown in fig. 2, the invention also relates to a preparation method of the high-strength bamboo fiber wound composite pipe, which comprises the following steps:
winding a bamboo fiber lining sheet on the surface of a mold roller 52, arranging a pressure roller 51 on the upper part of the mold roller 52 to compact the bamboo fiber lining sheet wound on the mold roller 52, and curing glue in the bamboo fiber lining sheet to obtain a lining layer 100;
winding the bamboo fiber reinforced sheet material on the lining layer 100 on the mold roller 52, compacting the bamboo fiber reinforced sheet material wound on the mould roller 52 by the pressure roller 51 on the upper part of the mold roller 52, and curing the glue to obtain a reinforced layer 200;
and step three, spraying the outer protective glue on the reinforcing layer 200 of the die roller 52, and carrying out blade coating and curing to obtain the outer protective layer 300.
As a preferred embodiment, the curing temperature of the glue in the first step is 110-.
As a preferred embodiment, the pressure of the pressure roller 51 is maintained at 20-40N in step one.
As a preferred embodiment, the curing temperature of the glue in the second step is 110-.
As a preferred embodiment, the inner liner 100 is prepared by the steps of:
step 1.1, flatly paving the film on a film conveying device 3, and allowing bamboo fibers to fall on the surface of the film through air-laid net to form a uniform bamboo fiber net;
step 1.2, winding and attaching the film to a mold roller 52, attaching bamboo fibers on the film to a position between the film and the surface of the mold roller 52, and uniformly feeding the glue to the bamboo fibers by using a glue feeding device before the film is attached to the surface of the mold roller 52;
step 1.3, after the film is completely attached to the surface of the mold roller 52, the pressure roller 51 applies pressure to uniformly distribute the glue on the inner side of the film, and then the glue is cured to obtain the lining layer 100.
As a preferred embodiment, the inner liner 100 may be further prepared by the following steps:
step 1.1, the film is spread on the film conveying device 3, the film with a certain length is wound on the mold roller 52, and then the bamboo fiber is laid on the film.
Step 1.2, bamboo fibers are laid on the surface of the film through an air-laid net to form a uniform bamboo fiber net;
step 1.3, winding and attaching the film to a mold roller 52, wrapping the bamboo fibers between the films, and uniformly feeding the glue to the bamboo fibers by using a glue feeding device before attaching the film to the surface of the mold roller 52;
step 1.4, after the film is completely attached to the surface of the mold roller 52, the pressure roller 51 applies pressure to uniformly distribute the glue on the inner side of the film, and then the glue is cured to obtain the lining layer 100.
Compared with the prior art, the existing production process of the inner liner is to wind a film on a mould roller and then pour glue, the process method is easy to cause waste of the glue in the operation process, the thickness of the inner liner cannot be controlled in one-time operation, or the inner liner can reach a certain thickness only by carrying out multiple times of curing, the operation is complex, the time waste is large, and the condition that bamboo fibers and the glue are not uniformly distributed after the inner liner is cured easily occurs, so that the product quality is influenced; the method of laying the bamboo fibers and the glue on the film in advance can enable the glue to be better bonded with the film and the bamboo fibers, better keep the consistency of the thickness of each part of the lining layer and easily control the putting proportion of the glue and the fibers during operation. In the actual production process, can be according to the production demand, at first the many films of rolling on the coiling mechanism, carry out bamboo fibre and glue again and lay, can further strengthen the dampproofing effect of inner liner.
In a preferred embodiment, the glue feeding device in step 1.2 is installed at a position right above the joint of the film and the die roll 52 or right above the bamboo fiber net positioned in front of the die roll 52.
As a preferred embodiment, in step 1.1, before the bamboo fibers fall on the surface of the film, a layer of glue for bonding the bamboo fibers is firstly coated on the surface of the film.
Lay a certain amount of glue earlier before laying the fibre, can make the better bonding of fibre on the film to can make the more even distribution of fibre on the film through the setting of glue unrestrained mode.
As a preferred embodiment, the reinforcing layer 200 is prepared by the following steps:
step 2.1, spreading the carrier cloth on the carrier cloth conveying device 10, and spreading the bamboo splits on the carrier cloth;
step 2.2, laying a layer of bamboo fiber net on the bamboo skin, and fixing the bamboo fiber net and the bamboo skin on a carrier cloth by adopting a sewing or spunlace mode;
step 2.3, winding and attaching the carrier cloth on the inner liner 100 of the mold roller 52, enabling the bamboo skin to be located between the carrier cloth and the inner liner 100, and uniformly feeding glue to the bamboo skin by adopting a glue feeding device before the carrier cloth is attached to the surface of the mold roller 52;
and 2.4, after the carrier cloth is completely attached to the surface of the lining layer 100 on the mold roller 52, applying pressure to the pressure roller 51 to uniformly distribute the glue on the inner side of the carrier cloth, and curing to obtain the reinforcing layer 200.
In the production of the enhancement layer in the prior art, the thin bamboo strips are connected end to form thin bamboo strip strips, then the thin bamboo strip strips are coated with resin and then wound on the inner liner, and the enhancement layer is formed by curing; the weaving process of the long bamboo strips is complex and tedious, and the arrangement, overlapping and combination modes among the bamboo strips are few, so that the bamboo strip weaving machine can not well adapt to the production requirements of different structures. Compared with the prior art, the bamboo skin is paved on the carrier cloth and then fixed by sewing, so that the rolled morphological structure of the bamboo skin can be flexibly changed, and more different process requirements are met.
As a preferred embodiment, in step 2.1, a layer of bamboo fiber net is laid before the thin bamboo strips are laid on the carrier cloth.
Lay a layer of bamboo fibre web in advance on the carrier cloth, can also better absorption glue, make bonding between the enhancement layer inside better, more tough, further strengthen the enhancement layer intensity.
As shown in fig. 2, the specific working flow of the production line of the bamboo-wound composite pipe is as follows:
1) preparation of the inner liner 100: the film in the film roll feeding device 1 is respectively paved with bamboo fiber nets and glue through the bamboo fiber feeding device 2 and the inner liner glue feeding device 4 through the film conveying device 3, the film is transferred to the lower part of a mold roller 52 in the rolling device 5 through the film conveying device 3 to be wound, after compaction is carried out through a pressure roller 51, the inner liner 100 is finally solidified, and the preparation of the inner liner 100 is completed. 2) Preparation of the reinforcing layer 200: the carrier cloth on the carrier cloth feeding and rolling device 6 is conveyed through the carrier cloth conveying device 10, the pretreated enhancement layer 200 is wound on the inner liner 100 on the die roller 52 through the fiber feeding device 7, the bamboo skin feeding device 8 and the bamboo skin fixing device 9, the enhancement layer is rolled and is sprayed with glue through the enhancement layer glue feeding device 41, and finally the enhancement layer 200 is formed through solidification.
3) Outer protective layer 300: and spraying an outer protective layer 300 on the cured reinforced inner surface, and curing the outer protective layer 300 to form the finished bamboo-wound composite pipe.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a high strength bamboo fiber winding composite pipe, includes inner liner, enhancement layer and outer inoxidizing coating from inside to outside in proper order, its characterized in that, the inner liner is twined the one deck postcure and is obtained on mould roller surface at least by bamboo fiber lining sheet, bamboo fiber lining sheet is in by thin layer and adhesion bamboo fibrous layer on the thin layer is constituteed, bamboo fibrous layer is added glue by the bamboo fibre web and is formed.
2. The high-strength bamboo fiber wound composite pipe according to claim 1, wherein the weight ratio of the bamboo fibers to the glue in the bamboo fiber layer is 1: (0.5-1.5).
3. The high-strength bamboo fiber wound composite pipe according to claim 2, wherein the length of the bamboo fiber is 60-150 mm, and the diameter of the bamboo fiber is 0.1-0.3 mm.
4. The high-strength bamboo fiber-wound composite pipe according to claim 1, wherein the glue comprises one or a mixture of two or more of urea resin, unsaturated polyester resin, epoxy resin, phenolic resin and polyurethane resin.
5. The high-strength bamboo fiber-wound composite pipe according to claim 1, wherein the reinforcement layer is obtained by winding at least one layer of bamboo fiber-reinforced sheet material on a mold roller wound with an inner liner layer and then curing the bamboo fiber-reinforced sheet material, and the bamboo fiber-reinforced sheet material comprises a carrier cloth and bamboo stripes uniformly fixed on the carrier cloth.
6. The high-strength bamboo fiber wound composite pipe according to claim 5, wherein the bamboo splits are fixed on the carrier cloth by sewing or spunlacing.
7. The high-strength bamboo fiber-wound composite pipe according to claim 5, wherein the carrier cloth is a non-woven fabric or a mesh cloth.
8. The high-strength bamboo fiber wound composite pipe according to claim 5, wherein a fiber filling layer is laid between the bamboo skin and the carrier cloth and on the upper surface of the bamboo skin.
9. The high strength bamboo filament wound composite pipe of claim 8, wherein the fiber filler layer is formed by uniformly distributing short fiber mesh with glue.
10. The high-strength bamboo fiber wound composite pipe according to claim 5, wherein at least one layer of the bamboo skin is laid on the carrier cloth, and the length direction of the bamboo skin is perpendicular to or parallel to the carrier cloth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110210426.XA CN113007459A (en) | 2021-02-25 | 2021-02-25 | High-strength bamboo fiber wound composite pipe and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110210426.XA CN113007459A (en) | 2021-02-25 | 2021-02-25 | High-strength bamboo fiber wound composite pipe and preparation method thereof |
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| Publication Number | Publication Date |
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| CN113007459A true CN113007459A (en) | 2021-06-22 |
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| CN202110210426.XA Pending CN113007459A (en) | 2021-02-25 | 2021-02-25 | High-strength bamboo fiber wound composite pipe and preparation method thereof |
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| CN (1) | CN113007459A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114274545A (en) * | 2021-12-27 | 2022-04-05 | 南方电网科学研究院有限责任公司 | Inorganic high-performance fiber composite material electric pole and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050028881A1 (en) * | 2002-03-14 | 2005-02-10 | Smith E. Peter | Fiber reinforced composite liner for lining an existing conduit and method of manufacture |
| CN101571213A (en) * | 2009-06-04 | 2009-11-04 | 芜湖圣弗兰玻璃钢有限公司 | Preparing method of bamboo fiber winding composite tube |
| CN102225620A (en) * | 2011-03-26 | 2011-10-26 | 谭江南 | Production method of glass magnesium bamboo plastic composite wall wound pipe |
| CN105546230A (en) * | 2016-02-02 | 2016-05-04 | 浙江鑫宙竹基复合材料科技有限公司 | Straw and bamboo twined composite tube and preparation method thereof |
| CN111156355A (en) * | 2019-12-23 | 2020-05-15 | 浙江鑫宙竹基复合材料科技有限公司 | Bamboo-based winding composite pipe and preparation method thereof |
| US20210031485A1 (en) * | 2019-08-02 | 2021-02-04 | Subaru Corporation | Preform, fiber-reinforced resin composite material, and method of manufacturing fiber-reinforced resin composite material |
-
2021
- 2021-02-25 CN CN202110210426.XA patent/CN113007459A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050028881A1 (en) * | 2002-03-14 | 2005-02-10 | Smith E. Peter | Fiber reinforced composite liner for lining an existing conduit and method of manufacture |
| CN101571213A (en) * | 2009-06-04 | 2009-11-04 | 芜湖圣弗兰玻璃钢有限公司 | Preparing method of bamboo fiber winding composite tube |
| CN102225620A (en) * | 2011-03-26 | 2011-10-26 | 谭江南 | Production method of glass magnesium bamboo plastic composite wall wound pipe |
| CN105546230A (en) * | 2016-02-02 | 2016-05-04 | 浙江鑫宙竹基复合材料科技有限公司 | Straw and bamboo twined composite tube and preparation method thereof |
| US20210031485A1 (en) * | 2019-08-02 | 2021-02-04 | Subaru Corporation | Preform, fiber-reinforced resin composite material, and method of manufacturing fiber-reinforced resin composite material |
| CN111156355A (en) * | 2019-12-23 | 2020-05-15 | 浙江鑫宙竹基复合材料科技有限公司 | Bamboo-based winding composite pipe and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114274545A (en) * | 2021-12-27 | 2022-04-05 | 南方电网科学研究院有限责任公司 | Inorganic high-performance fiber composite material electric pole and preparation method thereof |
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