CN110953410A - Non-excavation repair hose with rubber protective layer - Google Patents
Non-excavation repair hose with rubber protective layer Download PDFInfo
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- CN110953410A CN110953410A CN201911180487.5A CN201911180487A CN110953410A CN 110953410 A CN110953410 A CN 110953410A CN 201911180487 A CN201911180487 A CN 201911180487A CN 110953410 A CN110953410 A CN 110953410A
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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
- F16L11/00—Hoses, i.e. flexible pipes
- F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
- F16L11/08—Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L7/00—Compositions of natural rubber
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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
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
- F16L55/162—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe
- F16L55/165—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a pipe or flexible liner being inserted in the damaged section
- F16L55/1656—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a pipe or flexible liner being inserted in the damaged section materials for flexible liners
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/18—Applications used for pipes
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- Chemical & Material Sciences (AREA)
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Abstract
The invention discloses a trenchless repairing hose with a rubber protective layer, which comprises the following components distributed from the outside to the inside of the trenchless repairing hose: the rubber layer, the curing adhesive layer, the glass fiber polyester composite layer, the expansion adhesive layer and the adhesive are used, when the trenchless repairing hose is used, the interior of the trenchless repairing hose is turned outwards, so that the inner distribution and the outer distribution of the trenchless repairing hose are opposite, the rubber layer is in contact with liquid circulating inside the trenchless repairing hose, the rubber layer plays roles in acid resistance, alkali resistance and corrosion resistance, the durability and the service time of the trenchless repairing hose are improved, and the toughness and the structural strength of the trenchless repairing hose are enhanced by adding the glass fiber into the glass fiber polyester composite layer; the structure can effectively separate liquid in the urban pipeline, has higher tensile resistance and corrosion resistance, is tightly attached to the hose and the original pipeline, improves the durability of the repaired hose, prolongs the service life, and has high-standard repairing effect.
Description
Technical Field
The invention relates to the technical field of urban pipeline trenchless pipeline repair, in particular to a trenchless repair hose with a rubber protective layer.
Background
The rubber is a high-elasticity polymer material with reversible deformation, is rich in elasticity at room temperature, can generate large deformation under the action of small external force, can recover the original shape after the external force is removed, belongs to a completely amorphous polymer, and has low glass transition temperature and large molecular weight which is more than hundreds of thousands; early rubbers were latex from plants such as hevea brasiliensis, etc., processed to make elastic, insulative, impermeable and air-permeable materials. The rubber is a high-elasticity high-molecular compound, and is divided into two types of natural rubber and synthetic rubber, wherein the natural rubber is prepared by extracting colloid from plants such as rubber trees, rubber grasses and the like and then processing the extracted colloid; synthetic rubbers are obtained by polymerization of various monomers.
The glass fiber is an inorganic non-metallic material with excellent performance, has various varieties, has the advantages of good insulativity, strong heat resistance, good corrosion resistance and high mechanical strength, but has the defects of brittle performance and poor wear resistance, the diameter of the monofilament is several micrometers to twenty micrometers, which is equivalent to 1/20-1/5 of a hair, and each bundle of fiber precursor consists of hundreds of even thousands of monofilaments; glass fibers are generally used as reinforcing materials in composite materials, and when glass fibers are used as reinforcing materials for reinforced plastics, the greatest characteristic is high tensile strength. The tensile strength is 6.3-6.9 g/d in a standard state.
In the process of urbanization development, the urban scale is enlarged, urban population is increased, pressure is caused to urban pipelines, overlarge load is caused to the existing urban pipeline system, the urban pipelines can be re-laid in an urban planning range, and maintenance, maintenance and dredging face huge challenges. The urban drainage pipeline is used as an important infrastructure part of a city, and directly influences the normal operation of the city, the aspects of life, work, trip and the like; the pipeline repairing means that various technologies are adopted for the damaged and leaked conveying pipelines to restore the normal use function of the pipelines.
The existing pipeline repairing hose is not mature in technology, is still in a stage to be perfected, does not have high tensile resistance and corrosion resistance, is not good in the fitting degree of the hose and an original pipeline, is easy to generate bubbles, cannot effectively repair urban pipelines, and cannot reach high repairing standards.
Disclosure of Invention
The invention aims to provide a non-excavation repairing hose with a rubber protective layer, which can effectively block liquid in an urban pipeline, has high tensile resistance and corrosion resistance, is tightly attached to an original pipeline, improves the durability of the repairing hose, prolongs the service life and has a high-standard repairing effect.
The embodiment of the invention is realized by the following steps:
a trenchless repairing hose with a rubber protective layer comprises a rubber protective layer, a rubber protective layer and a rubber protective layer, wherein the rubber protective layer is distributed from the outside to the inside of the trenchless repairing hose: the inner part of the trenchless repairing hose is turned outwards when the trenchless repairing hose is used, so that the inner and outer distribution of the trenchless repairing hose is opposite; the rubber layer is prepared from 5-10% of methyl methacrylate, 40-60% of transparent raw rubber, 10-20% of a curing agent, 2-4% of a diluent, 1-2% of a coupling agent and 2-3% of an adhesive, the cured rubber layer is cured in a light curing or heat curing mode, the glass fiber polyester composite layer is formed by compounding glass fibers and a polyester material, the expanded rubber layer is made of a water-soluble expanded material, and the expanded rubber layer is bonded to the inner wall of the original pipeline through the adhesive.
In a preferred embodiment of the present invention, the rubber layer is made by the following process: s1, firstly, hot-melting the transparent raw rubber to 130-140 ℃, and then mixing the transparent raw rubber with methyl methacrylate; s2, carrying out the experiment in a vacuum environment, maintaining the temperature at 85-95 ℃, respectively adding a curing agent, a diluent, a coupling agent and an adhesive into the mixture in the S1, and fully mixing for 10-30 min; and S3, obtaining a molten rubber layer after reacting for 30min, coating the molten rubber layer on the surface of the solidified rubber layer, and standing until the rubber layer is solidified at room temperature.
In a preferred embodiment of the present invention, the transparent raw rubber is ethylene propylene rubber, natural rubber, butadiene rubber or butyl rubber.
In a preferred embodiment of the present invention, the curing agent and the curing glue layer of the rubber layer are respectively and simultaneously made of a photo-curing material, or respectively and simultaneously made of a thermosetting material, the photo-curing material includes urethane acrylate, epoxy acrylate, polyester acrylate, and methoxy monoacrylate, and the thermosetting material includes epoxy resin, acrylic resin, phenolic resin, or unsaturated polyester resin.
In a preferred embodiment of the present invention, the raw materials of the glass fiber polyester composite layer include 10-20% of glass fiber, 45-55% of unsaturated resin, 2-5% of initiator, 5-8% of filler, 2-3% of accelerator, 2-4% of curing agent, 4-8% of polymerization inhibitor, and 1-2% of additive.
In a preferred embodiment of the present invention, the manufacturing process of the glass fiber polyester composite layer comprises: s1, weighing the unsaturated resin according to the weight ratio, pouring the unsaturated resin into a container, stirring, then respectively pouring the initiator, the filler, the accelerator, the curing agent, the polymerization inhibitor and the additive, stirring and mixing; s2, adding glass fiber and mixing, and after uniformly mixing, placing the mixture at 80-120 ℃ for at least 20 min; and S3, placing the expansion glue layer in the curing glue layer to form a double-layer cylinder shape, taking the expansion glue layer as an inner liner layer, filling the molten glass fiber polyester composite layer obtained in the S2 between the curing glue layer and the expansion glue layer at one end, vacuumizing the space between the curing glue layer and the expansion glue layer at the other end, rolling the glue and turning the glue until the room temperature is reached after the space between the curing glue layer and the expansion glue layer is filled.
In a preferred embodiment of the present invention, the diameter of the trenchless repairing hose is 75 to 2200 mm.
In a preferred embodiment of the present invention, the trenchless rehabilitation hose is used for repairing urban pipelines in the types of cast iron pipes, steel pipes, concrete pipes, cement pipes or PVC pipes.
In a preferred embodiment of the present invention, the swelling glue layer is a water-swellable rubber, and the water-swellable rubber comprises a resin that swells in the presence of water.
In a preferred embodiment of the present invention, the binder is an organic binder, and the organic binder includes styrene-butadiene rubber, nitrocellulose, polyvinyl acetate, ethylene-vinyl acetate copolymer, ethylene-acrylic acid copolymer, vinyl acetate resin or acrylic acid resin.
The invention has the beneficial effects that:
the non-permeable material is formed by the rubber layer, so that liquid in the urban pipeline is effectively separated from the inner layer of the trenchless repairing hose, the thermosetting or photocuring material is formed by the curing adhesive layer, the structure of the whole repairing hose is supported, the fiber mesh structure is formed by the glass fiber polyester composite layer, the toughness and the structural strength of the repairing hose are enhanced, gaps between the inner wall of the urban pipeline and the hose are filled by the expansion adhesive layer, the sealing is tight, bubbles are blocked, and the repairing hose is firmly attached to the inner wall of the urban pipeline by the adhesive; the structure can effectively separate liquid in the urban pipeline, has higher tensile resistance and corrosion resistance, is tightly attached to the hose and the original pipeline, improves the durability of the repaired hose, prolongs the service life, and has high-standard repairing effect.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments are briefly described below, and 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.
FIG. 1 is a schematic view of a trenchless rehabilitation hose of the present invention;
FIG. 2 is a schematic partially cross-sectional view of the trenchless rehabilitation hose of the present invention;
icon: 1-a rubber layer; 2-curing the adhesive layer; 3-glass fiber polyester composite layer; 4-expansion glue layer; 5-adhesive.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
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.
First embodiment
Referring to fig. 1 and fig. 2, the present embodiment provides a trenchless repairing hose with a rubber protective layer, which includes: rubber layer 1, solidification glue film 2, glass fiber polyester composite bed 3, inflation glue film 4 and binder 5, when using the non-excavation to restore the hose, outwards overturn the inside of non-excavation restoration hose for the inside and outside distribution of non-excavation restoration hose is just in the opposite, and the hose outside becomes the inlayer and inside becomes the skin, and after the hose upset is restoreed in the non-excavation, from interior to exterior structure is respectively: the rubber layer 1, the curing adhesive layer 2, the glass fiber polyester composite layer 3, the expansion adhesive layer 4 and the adhesive 5, the rubber layer 1 is contacted with the liquid circulating inside the non-excavation repairing hose, the curing glue layer 2 is a glue layer with thermosetting resin, the trenchless repair hose is fixedly molded by heating, the glass fiber polyester composite layer 3 enhances the toughness and the structural strength of the trenchless repair hose by adding glass fiber, the expansion glue layer 4 fills the gap between the trenchless repair hose and the glass fiber polyester composite layer 3 to ensure the generation of no gap and no bubble, the trenchless repairing hose is bonded with the inner wall of the original pipeline through the adhesive 5 to form a firm bonding structure, so that the urban pipeline is effectively repaired.
Rubber layer 1 is compact structure, it can not be permeated by liquid, the thickness on rubber layer 1 is 2mm, rubber layer 1 can effectively be separated the inside liquid of urban duct and the inlayer structure of non-excavation restoration hose, rubber layer 1's raw materials include methyl methacrylate 5%, transparent crude rubber 50%, curing agent 20%, diluent 4%, coupling agent 2% and adhesive 3%, rubber layer 1's curing agent and curing glue layer 2 are the photocuring material respectively simultaneously, or be the thermocuring material respectively simultaneously, the thermocuring material includes epoxy, acrylic resin, phenol-formaldehyde resin or unsaturated polyester resin, rubber layer 1's preparation technology is:
s1, firstly, hot-melting transparent raw rubber to 130-140 ℃, then mixing methyl methacrylate, melting the raw rubber in a temperature range, adding methyl methacrylate when the raw rubber is in a liquid state, mixing and stirring to be in a fully dispersed state, wherein the transparent raw rubber is ethylene propylene rubber, natural rubber, butadiene rubber, styrene butadiene rubber or butyl rubber, and the embodiment adopts transparent natural rubber;
s2, carrying out the experiment in a vacuum environment, maintaining the temperature at 85-95 ℃, and respectively adding a curing agent, a diluent, a coupling agent and an adhesive into the mixture in the S1, wherein in the embodiment, the curing agent is acrylic resin, the diluent is acrylate, the coupling agent is a silane coupling agent, and the adhesive is an epoxy resin adhesive, and fully mixing for 30 min;
and S3, reacting for 30min to obtain a molten rubber layer 1, coating the rubber layer 1 serving as a material coating by using a brush, coating the rubber layer 1 on the surface of the cured rubber layer 2, continuously rolling the cured rubber layer 2 in a smooth placement area when the temperature is reduced to ensure that the rubber layer 1 is uniformly distributed on the surface of the cured rubber layer 2 and forms a stable compacted thickness, and finally standing to room temperature for curing.
The cured adhesive layer 2 is cured by light curing or heat curing, in the embodiment, a heat curing manner is adopted, the cured adhesive layer 2 is a polyester non-woven fabric added with a heat curing material, the thickness of the cured adhesive layer 2 is 15mm, the heat curing material is acrylic resin, the polyester non-woven fabric is the prior art, the heat curing material is added in the process of manufacturing the polyester non-woven fabric for molding, and finally, the adhesive layer with heat curing performance is formed.
The glass fiber polyester composite layer 3 is formed by compounding glass fibers and polyester materials, the thickness of the glass fiber polyester composite layer 3 is 6mm, and the raw materials of the glass fiber polyester composite layer 3 comprise 20% of glass fibers, 55% of unsaturated resin, 4% of an initiator, 8% of a filler, 2% of an accelerator, 4% of a curing agent, 6% of a polymerization inhibitor and 2% of an additive; the manufacturing process of the glass fiber polyester composite layer 3 comprises the following steps:
s1, weighing the unsaturated resin according to the parts by weight, pouring the weighed unsaturated resin into a container, stirring, then respectively pouring an initiator, a filler, an accelerator, a curing agent, a polymerization inhibitor and an additive, stirring and mixing, wherein the initiator is tert-amyl peroxyacetate, the filler is polyacrylamide, the accelerator is p-chlorobenzoic acid, the curing agent is epoxy resin, the polymerization inhibitor is copper naphthenate, and the additive is polyurethane glue.
S2, adding glass fiber and mixing, wherein the length range of the glass fiber is 1-2 mm, after uniform mixing, placing the mixture at 80-120 ℃ for at least 20min, and standing the mixture to form molten jelly;
s3, placing the expansion glue layer 4 in the curing glue layer 2 to form a double-layer cylinder shape, using the expansion glue layer 4 as an inner liner layer, pouring the molten glass fiber polyester composite layer 3 obtained in the S2 between the curing glue layer 2 and the expansion glue layer 4 at one end, vacuumizing between the curing glue layer 2 and the expansion glue layer 4 at the other end, after the curing glue layer 2 and the expansion glue layer 4 are fully filled, rolling and turning the glass fiber polyester composite layer 3 until the temperature reaches the room temperature, and enabling the glass fiber polyester composite layer 3 to position the curing glue layer 2 at the center of the expansion glue layer 4 in the turning process.
The types of the trenchless repairing hose used for repairing urban pipelines comprise a cast iron pipe, a steel pipe, a concrete pipe, a cement pipe or a PVC pipe, the type of the embodiment is the PVC pipe, and the diameter of the trenchless repairing hose of the embodiment is 1000 mm; the expansion glue layer 4 is made of water-soluble expansion materials, the thickness of the expansion glue layer 4 is 4mm, the expansion glue layer 4 is made of water-swellable rubber, and the components of the water-swellable rubber comprise resin which swells when meeting water; the adhesive 5 bonds the expansion glue layer 4 to the inner wall of the original pipeline, the adhesive 5 is an organic adhesive 5, the organic adhesive 5 includes styrene-butadiene glue, cellulose nitrate, polyvinyl acetate, ethylene-vinyl acetate copolymer, ethylene-acrylic acid copolymer, vinyl acetate resin or acrylic acid resin, and the organic adhesive 5 adopted in the embodiment is acrylic acid resin.
The fashioned non-excavation of this embodiment is restoreed the hose and is carried out both ends confined gas pressurization experiment, and the pressure size in the test hose, the rupture pressure that the experiment found the hose is 9.8Mpa, accords with the strength requirement of restoreing the hose.
Second embodiment
The second embodiment is partly identical to the first embodiment, except that a cured material and a glass fibre polyester composite layer 3 are used.
Referring to fig. 1 and fig. 2, the present embodiment provides a trenchless repairing hose with a rubber protective layer, which includes: rubber layer 1, solidification glue film 2, glass fiber polyester composite bed 3, inflation glue film 4 and binder 5, when using the non-excavation to restore the hose, outwards overturn the inside of non-excavation restoration hose for the inside and outside distribution of non-excavation restoration hose is just in the opposite, and the hose outside becomes the inlayer and inside becomes the skin, and after the hose upset is restoreed in the non-excavation, from interior to exterior structure is respectively: the rubber layer 1, the curing adhesive layer 2, the glass fiber polyester composite layer 3, the expansion adhesive layer 4 and the adhesive 5, the rubber layer 1 is contacted with the liquid circulating inside the non-excavation repairing hose, the cured adhesive layer 2 is an adhesive layer with light-cured resin, the trenchless repair hose is fixedly molded in an illumination mode, the glass fiber polyester composite layer 3 enhances the toughness and the structural strength of the trenchless repair hose by adding glass fiber, the gap between the trenchless repair hose and the glass fiber polyester composite layer 3 is filled up by the expansion adhesive layer 4, and the generation of no gap and no air bubble is ensured, the trenchless repairing hose is bonded with the inner wall of the original pipeline through the adhesive 5 to form a firm bonding structure, so that the urban pipeline is effectively repaired.
Rubber layer 1 is compact structure, it can not the infiltration liquid, the thickness on rubber layer 1 is 2mm, rubber layer 1 can effectively separate the inside liquid of urban duct and the inlayer structure of non-excavation restoration hose, rubber layer 1's raw materials include methyl methacrylate 10%, transparent crude rubber 60%, curing agent 15%, diluent 4%, coupling agent 2% and adhesive 3%, rubber layer 1's curing agent and curing glue layer 2 are the photocuring material respectively simultaneously, or be the photocuring material respectively simultaneously, the photocuring material includes polyurethane acrylate, epoxy acrylate, polyester acrylate, methoxy monoacrylate, rubber layer 1's preparation technology does:
s1, firstly, hot-melting transparent raw rubber to 130-140 ℃, then mixing methyl methacrylate, melting the raw rubber in a temperature range, adding methyl methacrylate when the raw rubber is in a liquid state, mixing and stirring to be in a fully dispersed state, wherein the transparent raw rubber is ethylene propylene rubber, natural rubber, butadiene rubber, styrene butadiene rubber or butyl rubber, and the embodiment adopts transparent natural rubber;
s2, carrying out the experiment in a vacuum environment, maintaining the temperature at 85-95 ℃, and respectively adding a curing agent, a diluent, a coupling agent and an adhesive into the mixture in the S1, wherein in the embodiment, the curing agent is epoxy acrylate, the diluent is acrylate, the coupling agent is a silane coupling agent, and the adhesive is an epoxy resin adhesive, and fully mixing for 30 min;
and S3, reacting for 30min to obtain a molten rubber layer 1, coating the rubber layer 1 serving as a material coating by using a brush, coating the rubber layer 1 on the surface of the cured rubber layer 2, continuously rolling the cured rubber layer 2 in a smooth placement area when the temperature is reduced to ensure that the rubber layer 1 is uniformly distributed on the surface of the cured rubber layer 2 and forms a stable compacted thickness, and finally standing to room temperature for curing.
The cured adhesive layer 2 is cured by light curing or heat curing, in the embodiment, the light curing mode is adopted, the thickness of the cured adhesive layer 2 is 15mm, the cured adhesive layer 2 adopts a polyester non-woven fabric added with a light curing material, wherein the light curing material is epoxy acrylate, the polyester non-woven fabric is the prior art, a heat curing material is added in the process of manufacturing the polyester non-woven fabric for molding, and finally, an adhesive layer with heat curing performance is formed.
The glass fiber polyester composite layer 3 is formed by compounding glass fibers and polyester materials, the thickness of the glass fiber polyester composite layer 3 is 6mm, and the raw materials of the glass fiber polyester composite layer 3 comprise 15% of glass fibers, 50% of unsaturated resin, 4% of an initiator, 6% of a filler, 3% of an accelerator, 4% of a curing agent, 8% of a polymerization inhibitor and 2% of an additive; the manufacturing process of the glass fiber polyester composite layer 3 comprises the following steps:
s1, weighing the unsaturated resin according to the parts by weight, pouring the weighed unsaturated resin into a container, stirring, then respectively pouring an initiator, a filler, an accelerator, a curing agent, a polymerization inhibitor and an additive, stirring and mixing, wherein the initiator is perbenzophenone, the filler is polyacrylamide, the accelerator is p-chlorobenzoic acid, the curing agent is polyurethane acrylate, the polymerization inhibitor is copper naphthenate, and the additive is polyurethane glue.
S2, adding glass fiber and mixing, wherein the length range of the glass fiber is 0.6-1 mm, uniformly mixing, placing the mixture at 80-120 ℃ for at least 20min, and standing the mixture to form molten jelly;
s3, placing the expansion glue layer 4 in the curing glue layer 2 to form a double-layer cylinder shape, using the expansion glue layer 4 as an inner liner layer, pouring the molten glass fiber polyester composite layer 3 obtained in the S2 between the curing glue layer 2 and the expansion glue layer 4 at one end, vacuumizing between the curing glue layer 2 and the expansion glue layer 4 at the other end, after the curing glue layer 2 and the expansion glue layer 4 are fully filled, rolling and turning the glass fiber polyester composite layer 3 until the temperature reaches the room temperature, and enabling the glass fiber polyester composite layer 3 to position the curing glue layer 2 at the center of the expansion glue layer 4 in the turning process.
The types of the trenchless repairing hose used for repairing urban pipelines comprise a cast iron pipe, a steel pipe, a concrete pipe, a cement pipe or a PVC pipe, the type of the embodiment is the PVC pipe, and the diameter of the trenchless repairing hose of the embodiment is 1000 mm; the expansion glue layer 4 is made of water-soluble expansion materials, the thickness of the expansion glue layer 4 is 4mm, the expansion glue layer 4 is made of water-swellable rubber, and the components of the water-swellable rubber comprise resin which swells when meeting water; the adhesive 5 bonds the expansion glue layer 4 to the inner wall of the original pipeline, the adhesive 5 is an organic adhesive 5, the organic adhesive 5 includes styrene-butadiene glue, cellulose nitrate, polyvinyl acetate, ethylene-vinyl acetate copolymer, ethylene-acrylic acid copolymer, vinyl acetate resin or acrylic acid resin, and the organic adhesive 5 adopted in the embodiment is acrylic acid resin.
The formed trenchless repairing hose of the embodiment is subjected to a gas pressurization experiment with two closed ends, the pressure intensity in the hose is tested, the rupture pressure of the hose is measured to be 6.5Mpa through the experiment, and the strength requirement of the repairing hose is met.
In summary, the embodiment of the invention forms the non-permeable material through the rubber layer, effectively separates the liquid in the urban pipeline from the inner layer of the trenchless repair hose, forms the thermosetting or light-curing material through the curing adhesive layer, supports the structure of the whole repair hose, forms the fiber net structure through the glass fiber polyester composite layer, enhances the toughness and the structural strength of the repair hose, fills the gap between the inner wall of the urban pipeline and the hose through the expansion adhesive layer, seals tightly and blocks the air bubbles, and firmly attaches the repair hose and the inner wall of the urban pipeline through the adhesive; this structure can be effectively with the liquid separation in the urban pipeline, has higher tensile resistance, corrosion resistance, closely laminates at hose and former pipeline, has improved the durability of restoreing the hose, has prolonged life, has the restoration effect of high standard.
This description describes examples of embodiments of the invention, and is not intended to illustrate and describe all possible forms of the invention. It will be appreciated by those of ordinary skill in the art that the embodiments described herein are intended to assist the reader in understanding the principles of the invention and are to be construed as being without limitation to such specifically recited embodiments and examples. Those skilled in the art can make various other specific changes and combinations based on the teachings of the present invention without departing from the spirit of the invention, and these changes and combinations are within the scope of the invention.
Claims (10)
1. The utility model provides a take trenchless repair hose of rubber protective layer which characterized in that includes and restores the hose outside to interior distribution from trenchless: when the trenchless repairing hose is used, the interior of the trenchless repairing hose is turned outwards, so that the inner distribution and the outer distribution of the trenchless repairing hose are opposite; the rubber layer is prepared from 5-10% of methyl methacrylate, 40-60% of transparent raw rubber, 10-20% of a curing agent, 2-4% of a diluent, 1-2% of a coupling agent and 2-3% of an adhesive, the curing adhesive layer is cured in a light curing or heat curing mode, the glass fiber polyester composite layer is formed by compounding glass fibers and a polyester material, the expansion adhesive layer is made of a water-soluble expansion material, and the expansion adhesive layer is bonded to the inner wall of the original pipeline through the adhesive.
2. The trenchless repairing hose with the rubber protective layer as claimed in claim 1, wherein the rubber layer is manufactured by the following process: s1, firstly, hot-melting the transparent raw rubber to 130-140 ℃, and then mixing the transparent raw rubber with methyl methacrylate; s2, carrying out the experiment in a vacuum environment, maintaining the temperature at 85-95 ℃, respectively adding a curing agent, a diluent, a coupling agent and an adhesive into the mixture in the S1, and fully mixing for 10-30 min; and S3, obtaining a molten rubber layer after reacting for 30min, coating the molten rubber layer on the surface of the solidified rubber layer, and standing to room temperature for solidification.
3. The trenchless rehabilitation hose with the rubber protective layer as claimed in claim 2, wherein the transparent raw rubber is ethylene propylene rubber, natural rubber, butadiene rubber, styrene butadiene rubber or butyl rubber.
4. The trenchless repairing hose with the rubber protective layer according to claim 2, wherein the curing agent and the curing glue layer of the rubber layer are respectively and simultaneously photo-cured materials or respectively and simultaneously thermosetting materials, the photo-cured materials comprise urethane acrylate, epoxy acrylate, polyester acrylate and methoxy monoacrylate, and the thermosetting materials comprise epoxy resin, acrylic resin, phenolic resin or unsaturated polyester resin.
5. The trenchless repairing hose with the rubber protective layer according to claim 1, wherein raw materials of the glass fiber polyester composite layer comprise 10-20% of glass fiber, 45-55% of unsaturated resin, 2-5% of initiator, 5-8% of filler, 2-3% of accelerator, 2-4% of curing agent, 4-8% of polymerization inhibitor and 1-2% of additive.
6. The trenchless repairing hose with the rubber protective layer as claimed in claim 5, wherein the manufacturing process of the glass fiber polyester composite layer is as follows: s1, weighing the unsaturated resin according to the weight ratio, pouring the unsaturated resin into a container, stirring, then respectively pouring the initiator, the filler, the accelerator, the curing agent, the polymerization inhibitor and the additive, stirring and mixing; s2, adding glass fiber and mixing, and after uniformly mixing, placing the mixture at 80-120 ℃ for at least 20 min; and S3, placing the expansion glue layer in the curing glue layer to form a double-layer cylinder shape, taking the expansion glue layer as an inner liner layer, filling the molten glass fiber polyester composite layer obtained in the S2 between the curing glue layer and the expansion glue layer at one end, vacuumizing the space between the curing glue layer and the expansion glue layer at the other end, rolling the glue and turning the glue until the room temperature is reached after the space between the curing glue layer and the expansion glue layer is filled.
7. The trenchless repairing hose with the rubber protective layer as claimed in claim 1, wherein the diameter of the trenchless repairing hose is 75-2200 mm.
8. The trenchless rehabilitation hose with rubber protection layer according to claim 7, wherein the types of the trenchless rehabilitation hose used for repairing urban pipelines comprise cast iron pipes, steel pipes, concrete pipes, cement pipes or PVC pipes.
9. The trenchless rehabilitation hose with rubber protection layer according to claim 1, wherein the expansion glue layer is water-swellable rubber, and the composition of the water-swellable rubber comprises resin capable of swelling when encountering water.
10. The trenchless rehabilitation hose with the rubber protection layer as claimed in claim 1, wherein the adhesive is an organic adhesive, and the organic adhesive comprises styrene-butadiene rubber, cellulose nitrate, polyvinyl acetate, ethylene-vinyl acetate copolymer, ethylene-acrylic acid copolymer, vinyl acetate resin or acrylic acid resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911180487.5A CN110953410B (en) | 2019-11-27 | 2019-11-27 | Non-excavation repair hose with rubber protective layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911180487.5A CN110953410B (en) | 2019-11-27 | 2019-11-27 | Non-excavation repair hose with rubber protective layer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114407463A (en) * | 2021-12-22 | 2022-04-29 | 北京工商大学 | Anti-ultraviolet multilayer protective film for pipeline repair by in-situ curing method for trenchless repair and preparation method thereof |
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| CN110953410B (en) | 2022-03-29 |
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