CN114031950A - Composite glass fiber reinforced plastic cable protection pipe sleeve - Google Patents

Composite glass fiber reinforced plastic cable protection pipe sleeve Download PDF

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Publication number
CN114031950A
CN114031950A CN202111332003.1A CN202111332003A CN114031950A CN 114031950 A CN114031950 A CN 114031950A CN 202111332003 A CN202111332003 A CN 202111332003A CN 114031950 A CN114031950 A CN 114031950A
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parts
glass fiber
continuous glass
drying
reinforced plastic
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Inventor
方明堂
张美龙
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Zhejiang Minghui Electric Power Equipment Co ltd
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Zhejiang Minghui Electric Power Equipment Co ltd
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Priority to CN202111332003.1A priority Critical patent/CN114031950A/en
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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
    • C08L101/00—Compositions of unspecified macromolecular compounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/56—Winding and joining, e.g. winding spirally
    • B29C53/58—Winding and joining, e.g. winding spirally helically
    • B29C53/60—Winding and joining, e.g. winding spirally helically using internal forming surfaces, e.g. mandrels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/80—Component parts, details or accessories; Auxiliary operations
    • B29C53/8008—Component parts, details or accessories; Auxiliary operations specially adapted for winding and joining
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2237—Oxides; Hydroxides of metals of titanium
    • C08K2003/2241—Titanium dioxide
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/011—Nanostructured additives
    • 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2203/00—Applications
    • C08L2203/20—Applications use in electrical or conductive gadgets
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/04—Polymer mixtures characterised by other features containing interpenetrating networks

Abstract

The invention relates to the technical field of cable protection pipe sleeves, in particular to a composite glass fiber reinforced plastic cable protection pipe sleeve which comprises epoxy resin, a carbon nano tube, preplasticized recycled rubber powder and TiO2The adhesive comprises sol, continuous glass fiber, composite filler, curing agent, accelerator, absolute ethyl alcohol and release agent, wherein the components are as follows by weight: 100-200 parts of epoxy resin, 70-85 parts of carbon nano tube, 150-250 parts of preplasticized recycled rubber powder and TiO2100-200 parts of sol, 200-250 parts of continuous glass fiber, 50-80 parts of composite filler, 10-15 parts of curing agent, 20-25 parts of accelerator, 50-80 parts of absolute ethyl alcohol and 20-25 parts of release agent.

Description

Composite glass fiber reinforced plastic cable protection pipe sleeve
Technical Field
The invention relates to the technical field of cable protection pipe sleeves, in particular to a composite glass fiber reinforced plastic cable protection pipe sleeve.
Background
In municipal construction, a large number of transmission cables are buried underground, the transmission cables are easy to damage under the corrosion of soil and the like, at the moment, a pipeline is needed to protect the cables, currently used cable protection pipes mainly comprise steel pipes, PVC pipes, cement pipes and the like, the pipes still have some problems in practical use, such as high steel pipe price, low PVC pipe strength, when the cable protection pipes are used for cable protection, a concrete protection layer needs to be built around the pipes to enhance strength, the construction period is long, the cement pipes are too heavy, and the installation and transportation are inconvenient, while the composite glass fiber reinforced plastic cable protection pipe sleeve is used due to light weight, hardness, non-conductivity and high mechanical strength.
At present, the toughness of the composite glass fiber reinforced plastic cable protective pipe sleeve is poor, the use condition is greatly limited, and the composite glass fiber reinforced plastic cable protective pipe sleeve cannot be widely applied.
In conclusion, the invention solves the existing problems by designing the composite glass fiber reinforced plastic cable protective sleeve.
Disclosure of Invention
The invention aims to provide a composite glass fiber reinforced plastic cable protective pipe sleeve to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a composite glass fiber reinforced plastic cable protecting pipe sleeve comprises epoxy resin, carbon nano tubes, preplasticized recycled rubber powder and TiO2The adhesive comprises sol, continuous glass fiber, composite filler, curing agent, accelerator, absolute ethyl alcohol and release agent, wherein the components are as follows by weight: 100-200 parts of epoxy resin, 70-85 parts of carbon nano tube,150-250 parts of preplasticizing recovered rubber powder and TiO2100-200 parts of sol, 200-250 parts of continuous glass fiber, 50-80 parts of composite filler, 10-15 parts of curing agent, 20-25 parts of accelerator, 50-80 parts of absolute ethyl alcohol and 20-25 parts of release agent.
As a preferable scheme of the invention, the method comprises the following steps:
s1, preparing a core die, selecting a seamless steel pipe with a corresponding size as a blank of the core die according to a cable protection pipe sleeve, grinding the surface of the core die by using an external grinding machine, polishing the outer surface of the core die by using a polishing machine, wiping the surface of the core die clean by using absolute ethyl alcohol and drying in the air, coating a layer of release agent on the surface of the core die, finally installing the core die on a core die driver of a winding machine, winding a layer of plastic film on the outer wall of the core die, and uniformly coating edible oil on the plastic film to prepare a lining die;
s2, preparing a glue solution, doping the carbon nano tube into the TiO2 sol, stirring for 12 hours at room temperature to obtain TiO2 sol doped with the carbon nano tube, drying for 2.5 hours at 90 ℃ to obtain stable gel, melting and blending pre-plasticized recycled glue powder and epoxy resin at high temperature for 125-140 minutes to obtain a modified epoxy resin matrix, respectively adding the modified epoxy resin matrix, a curing agent and an accelerant into the stable gel, stirring uniformly to obtain a glue solution, and finally pouring the glue solution into a glue soaking device of a winding machine;
s3, preparing fibers, placing the continuous glass fibers on a creel of a winding machine after the continuous glass fibers pass through a glue dipping device, dipping a layer of glue solution on the surface of the continuous glass fibers after the continuous glass fibers pass through the glue dipping device, and fixing the end parts of the dipped continuous glass fibers on a lining die through a fiber conveying frame;
s4, winding and forming, starting a core mold driver and a fiber conveying frame driver of the winding machine to wind the impregnated continuous glass fiber on the surface of the lining mold, wherein the rotation speed of the lining mold is 130 r/min-140 r/min, and finishing winding when the winding thickness of the continuous glass fiber on the surface of the lining mold reaches 1.5 cm-3.5 cm;
s5, drying and curing, continuously winding a layer of plastic film on the surface of the continuous glass fiber to prevent cracking and resin dripping, and then placing the continuous glass fiber wound with a layer of plastic film on the surface together with the lining mold into an oven for drying;
and S6, demolding by adopting an air pressure method after finishing the demolding and the drying, introducing compressed air between the lining mold and the interface of the cured continuous glass fiber, separating and separating the lining mold from the cured continuous glass fiber by utilizing the expansion force of the compressed air to obtain a semi-finished product, removing the plastic film on the surface of the semi-finished product, and trimming the end face of the semi-finished product to be level to obtain the composite glass fiber reinforced plastic cable protective sleeve.
As the preferable scheme of the invention, the composite filler is prepared by mixing polymethyl methacrylate, epoxy-terminated polyarylether, polyacrylonitrile-based carbon fiber and silicon carbide fiber according to the mass ratio of 4: 3: 1: 2, the curing agent is diaminodiphenylmethane, the accelerating agent is cobalt naphthenate, and the release agent is MoS2And (3) a release agent.
As a preferable scheme of the invention, the preplasticizing recovered rubber powder is prepared by mixing waste cable skin, dibutyl phthalate and dibasic lead phosphite, and the components are as follows according to the weight ratio: 150-200 parts of waste cable skin, 50-70 parts of dibutyl phthalate and 60-75 parts of dibasic lead phosphite.
As a preferable scheme of the invention, the preparation method of the preplasticizing recovered rubber powder comprises the following steps:
s11, crushing the waste cable skin by adopting an air expansion refrigeration crushing method, and drying to obtain 80-100-mesh recovered rubber powder;
s12, adding the recovered rubber powder, dibutyl phthalate and dibasic lead phosphite into a stirring reaction kettle, preplasticizing at 125-130 ℃ for 15-20 min, stirring once every 5min, and drying to obtain the preplasticized recovered rubber powder.
As a preferable embodiment of the present invention, the TiO compound2The sol is prepared by mixing n-butyl titanate, acetylacetone, absolute ethyl alcohol, concentrated nitric acid and deionized water, and the components are as follows by weight ratio: 100-120 parts of n-butyl titanate, 50-80 parts of acetylacetone, 200-300 parts of absolute ethyl alcohol and 30-40 parts of concentrated nitric acidAnd 80-100 parts of deionized water.
As a preferable embodiment of the present invention, the TiO compound2The preparation method of the sol comprises the following steps:
s21, mixing and stirring n-butyl titanate and acetylacetone for 1.5h to obtain a modified precursor;
s22, adding absolute ethyl alcohol and concentrated nitric acid into the modified precursor, stirring for 45-50 min, slowly dropping deionized water at a dropping rate of 5-8 ml/min, and stirring for 3-4 h again to obtain TiO2And (3) sol.
In a preferred embodiment of the present invention, the core mold surface roughness Ra after polishing in S2 is 0.7 to 0.8 μm.
In a preferable scheme of the invention, the drying time in the S5 is 40-50 min, and the drying temperature is 110-115 ℃.
In a preferred embodiment of the present invention, the thickness of the plastic film in S1 is 0.16mm to 0.18 mm.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the preplasticized recovered rubber powder and the composite filler are added in the manufacturing process, the modified epoxy resin matrix obtained after the preplasticized recovered rubber powder and the epoxy resin are melted and blended at high temperature has higher bending strength, corrosion resistance and toughness, meanwhile, the polymethyl methacrylate, the epoxy end group polyarylethersulfone and the epoxy resin in the composite filler can form an interpenetrating network structure, the synergistic effect is obvious, the toughness and the structural strength of the product can be improved, the polyacrylonitrile-based carbon fiber and the silicon carbide fiber in the composite filler can enhance and modify the epoxy resin, the toughness of the product is further improved, and under the interaction of the preplasticized recovered rubber powder and the composite filler, the manufactured composite glass fiber reinforced plastic cable protection pipe sleeve has stronger toughness and higher structural strength, and the application range is higher.
2. According to the invention, the carbon nano tube and TiO2 sol are added in the manufacturing process, so that the carbon nano tube and TiO2 sol can effectively improve the high temperature resistance of the composite glass fiber reinforced plastic cable protective pipe sleeve, and the composite glass fiber reinforced plastic cable protective pipe sleeve can be used under the high temperature condition.
3. According to the invention, the edible oil is coated on the plastic film and then the plastic film is wound, so that the inner wall of the composite glass fiber reinforced plastic cable protection pipe sleeve is smooth and uniform in color, demoulding is convenient and rapid under the lubrication of the edible oil, adhesion and other defects are avoided, meanwhile, during drying, a layer of plastic film is wound on the surface of continuous glass fiber, cracking and resin dripping are effectively prevented, the thickness of the cured composite glass fiber reinforced plastic cable protection pipe sleeve is kept uniform, and the quality of the composite glass fiber reinforced plastic cable protection pipe sleeve is effectively improved.
4. In the invention, the preplasticizing recycled rubber powder prepared from the waste cable skin is used as the base material, so that the waste wire and cable skin can be fully recycled, and the white pollution is reduced.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without any creative work based on the embodiments of the present invention belong to the protection scope of the present invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, and the terms used herein in the specification of the present invention are for the purpose of describing particular embodiments only and are not intended to limit the present invention, and the term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
The invention provides a technical scheme that:
a composite glass fiber reinforced plastic cable protecting pipe sleeve comprises epoxy resin, carbon nano tubes, preplasticized recycled rubber powder and TiO2The adhesive comprises sol, continuous glass fiber, composite filler, curing agent, accelerator, absolute ethyl alcohol and release agent, wherein the components are as follows by weight: 100-200 parts of epoxy resin70-85 parts of carbon nano tube, 150-250 parts of preplasticized recycled rubber powder and TiO2100-200 parts of sol, 200-250 parts of continuous glass fiber, 50-80 parts of composite filler, 10-15 parts of curing agent, 20-25 parts of accelerator, 50-80 parts of absolute ethyl alcohol and 20-25 parts of release agent.
Further, the method comprises the following steps:
s1, preparing a core die, selecting a seamless steel pipe with a corresponding size as a blank of the core die according to a cable protection pipe sleeve, grinding the surface of the core die by using an external grinding machine, polishing the outer surface of the core die by using a polishing machine, wiping the surface of the core die clean by using absolute ethyl alcohol and drying in the air, coating a layer of release agent on the surface of the core die, finally installing the core die on a core die driver of a winding machine, winding a layer of plastic film on the outer wall of the core die, and uniformly coating edible oil on the plastic film to prepare a lining die;
s2, preparing a glue solution, doping the carbon nano tube into the TiO2 sol, stirring for 12 hours at room temperature to obtain TiO2 sol doped with the carbon nano tube, drying for 2.5 hours at 90 ℃ to obtain stable gel, melting and blending pre-plasticized recycled glue powder and epoxy resin at high temperature for 125-140 minutes to obtain a modified epoxy resin matrix, respectively adding the modified epoxy resin matrix, a curing agent and an accelerant into the stable gel, stirring uniformly to obtain a glue solution, and finally pouring the glue solution into a glue soaking device of a winding machine;
s3, preparing fibers, placing the continuous glass fibers on a creel of a winding machine after the continuous glass fibers pass through a glue dipping device, dipping a layer of glue solution on the surface of the continuous glass fibers after the continuous glass fibers pass through the glue dipping device, and fixing the end parts of the dipped continuous glass fibers on a lining die through a fiber conveying frame;
s4, winding and forming, starting a core mold driver and a fiber conveying frame driver of the winding machine to wind the impregnated continuous glass fiber on the surface of the lining mold, wherein the rotation speed of the lining mold is 130 r/min-140 r/min, and finishing winding when the winding thickness of the continuous glass fiber on the surface of the lining mold reaches 1.5 cm-3.5 cm;
s5, drying and curing, continuously winding a layer of plastic film on the surface of the continuous glass fiber to prevent cracking and resin dripping, and then placing the continuous glass fiber wound with a layer of plastic film on the surface together with the lining mold into an oven for drying;
and S6, demolding by adopting an air pressure method after finishing the demolding and the drying, introducing compressed air between the lining mold and the interface of the cured continuous glass fiber, separating and separating the lining mold from the cured continuous glass fiber by utilizing the expansion force of the compressed air to obtain a semi-finished product, removing the plastic film on the surface of the semi-finished product, and trimming the end face of the semi-finished product to be level to obtain the composite glass fiber reinforced plastic cable protective sleeve.
Further, the composite filler is prepared by mixing polymethyl methacrylate, epoxy-terminated polyarylether, polyacrylonitrile-based carbon fiber and silicon carbide fiber according to the mass ratio of 4: 3: 1: 2, the curing agent is diaminodiphenylmethane, the accelerator is cobalt naphthenate, and the release agent is MoS2And (3) a release agent.
Further, the preplasticizing recovered rubber powder is prepared by mixing waste cable skin, dibutyl phthalate and dibasic lead phosphite, and the components are as follows according to the weight ratio: 150-200 parts of waste cable skin, 50-70 parts of dibutyl phthalate and 60-75 parts of dibasic lead phosphite.
Further, the preparation method of the preplasticizing recycled rubber powder comprises the following steps:
s11, crushing the waste cable skin by adopting an air expansion refrigeration crushing method, and drying to obtain 80-100-mesh recovered rubber powder;
s12, adding the recovered rubber powder, dibutyl phthalate and dibasic lead phosphite into a stirring reaction kettle, preplasticizing at 125-130 ℃ for 15-20 min, stirring once every 5min, and drying to obtain the preplasticized recovered rubber powder.
Further, the TiO2The sol is prepared by mixing n-butyl titanate, acetylacetone, absolute ethyl alcohol, concentrated nitric acid and deionized water, and the components are as follows by weight ratio: 100-120 parts of n-butyl titanate, 50-80 parts of acetylacetone, 200-300 parts of absolute ethyl alcohol, 30-40 parts of concentrated nitric acid and 80-100 parts of deionized water.
Further, the TiO2The preparation method of the sol comprises the following steps:
s21, mixing and stirring n-butyl titanate and acetylacetone for 1.5h to obtain a modified precursor;
s22, adding absolute ethyl alcohol and concentrated nitric acid into the modified precursor, stirring for 45-50 min, slowly dropping deionized water at a dropping rate of 5-8 ml/min, and stirring for 3-4 h again to obtain TiO2And (3) sol.
Further, the core mold surface roughness Ra after polishing treatment in S2 is 0.7 μm to 0.8 μm.
Further, the drying time in the step S5 is 40min to 50min, and the drying temperature is 110 ℃ to 115 ℃.
Further, the thickness of the plastic film in the S1 is 0.16 mm-0.18 mm.
Detailed description of the preferred embodiments
Example 1:
weighing 150 parts of waste cable skin, 50 parts of dibutyl phthalate and 60 parts of dibasic lead phosphite, crushing the waste cable skin by adopting an air expansion refrigeration crushing method, drying to obtain 80-mesh recovered rubber powder, adding the recovered rubber powder, the dibutyl phthalate and the dibasic lead phosphite into a stirring reaction kettle, preplasticizing for 20min at 130 ℃, stirring once every 5min, and drying to obtain preplasticized recovered rubber powder;
weighing 120 parts of n-butyl titanate, 80 parts of acetylacetone, 300 parts of absolute ethyl alcohol, 40 parts of concentrated nitric acid and 100 parts of deionized water, mixing and stirring the n-butyl titanate and the acetylacetone for 1.5h to obtain a modified precursor, adding the absolute ethyl alcohol and the concentrated nitric acid into the modified precursor, stirring for 50min, slowly dropping the deionized water at a dropping rate of 8ml/min, stirring for 4h again to obtain TiO2Sol gel
Weighing 100 parts of epoxy resin, 70 parts of carbon nano tube, 150 parts of preplasticized recycled rubber powder and TiO2100 parts of sol, 200 parts of continuous glass fiber, 50 parts of composite filler, 10 parts of curing agent, 20 parts of accelerator, 50 parts of absolute ethyl alcohol and 20 parts of release agent;
preparing a core mould, selecting a seamless steel pipe with a corresponding size as a blank of the core mould according to a cable protection pipe sleeve, grinding the surface of the core mould by using a cylindrical grinder, polishing the outer surface of the core mould by using a polishing machine, wherein the surface roughness Ra of the polished core mould is 0.7 mu m, wiping the surface of the core mould by using absolute ethyl alcohol, drying the surface of the core mould, coating a layer of release agent on the surface of the core mould, finally installing the core mould on a core mould driver of a winding machine, winding a layer of plastic film on the outer wall of the core mould, wherein the thickness of the plastic film is 0.16mm, and uniformly coating edible oil on the plastic film to obtain a lining mould;
preparing glue solution, doping carbon nanotubes into TiO2 sol, stirring for 12 hours at room temperature to obtain TiO2 sol doped with the carbon nanotubes, drying for 2.5 hours at 90 ℃ to obtain stable gel, melting and blending pre-plasticized recycled glue powder and epoxy resin at high temperature for 140 minutes to obtain a modified epoxy resin matrix, respectively adding the modified epoxy resin matrix, a curing agent and an accelerator into the stable gel, stirring uniformly to obtain glue solution, and finally pouring the glue solution into a glue dipping device of a winding machine;
preparing fibers, namely putting continuous glass fibers on a creel of a winding machine after the continuous glass fibers pass through a glue dipping device, dipping a layer of glue solution on the surface of the continuous glass fibers after the continuous glass fibers pass through the glue dipping device, and fixing the end parts of the dipped continuous glass fibers on a lining die through a fiber conveying frame;
winding and forming, starting a core mold driver and a fiber conveying frame driver of a winding machine to wind the impregnated continuous glass fiber on the surface of a lining mold, wherein the rotation speed of the lining mold is 130r/min, and finishing winding when the winding thickness of the continuous glass fiber on the surface of the lining mold reaches 1.5 cm;
drying and curing, continuously winding a layer of plastic film on the surface of the continuous glass fiber for preventing cracking and resin dripping, and then placing the continuous glass fiber wound with the layer of plastic film on the surface together with a lining mold into a drying oven for drying, wherein the drying time is 40min, and the drying temperature is 110 ℃;
demoulding and finishing, after drying, demoulding by adopting an air pressure method, introducing compressed air between the lining die and the interface of the cured continuous glass fiber, separating and separating the lining die and the cured continuous glass fiber by utilizing the expansion force of the compressed air to obtain a semi-finished product, removing the plastic film on the surface of the semi-finished product, and finishing and leveling the end face of the semi-finished product to obtain the composite glass fiber reinforced plastic cable protective pipe sleeve.
Example 2:
weighing 150 parts of waste cable skin, 50 parts of dibutyl phthalate and 60 parts of dibasic lead phosphite, crushing the waste cable skin by adopting an air expansion refrigeration crushing method, drying to obtain 80-mesh recovered rubber powder, adding the recovered rubber powder, the dibutyl phthalate and the dibasic lead phosphite into a stirring reaction kettle, preplasticizing for 20min at 130 ℃, stirring once every 5min, and drying to obtain preplasticized recovered rubber powder;
weighing 120 parts of n-butyl titanate, 80 parts of acetylacetone, 300 parts of absolute ethyl alcohol, 40 parts of concentrated nitric acid and 100 parts of deionized water, mixing and stirring the n-butyl titanate and the acetylacetone for 1.5h to obtain a modified precursor, adding the absolute ethyl alcohol and the concentrated nitric acid into the modified precursor, stirring for 50min, slowly dropping the deionized water at a dropping rate of 8ml/min, stirring for 4h again to obtain TiO2Sol gel
Weighing 100 parts of epoxy resin, 80 parts of carbon nano tube, 200 parts of preplasticizing recycled rubber powder and TiO2150 parts of sol, 200 parts of continuous glass fiber, 65 parts of composite filler, 105 parts of curing agent, 20 parts of accelerator, 50 parts of absolute ethyl alcohol and 20 parts of release agent;
preparing a core mould, selecting a seamless steel pipe with a corresponding size as a blank of the core mould according to a cable protection pipe sleeve, grinding the surface of the core mould by using a cylindrical grinder, polishing the outer surface of the core mould by using a polishing machine, wherein the surface roughness Ra of the polished core mould is 0.7 mu m, wiping the surface of the core mould by using absolute ethyl alcohol, drying the surface of the core mould, coating a layer of release agent on the surface of the core mould, finally installing the core mould on a core mould driver of a winding machine, winding a layer of plastic film on the outer wall of the core mould, wherein the thickness of the plastic film is 0.16mm, and uniformly coating edible oil on the plastic film to obtain a lining mould;
preparing glue solution, doping carbon nanotubes into TiO2 sol, stirring for 12 hours at room temperature to obtain TiO2 sol doped with the carbon nanotubes, drying for 2.5 hours at 90 ℃ to obtain stable gel, melting and blending pre-plasticized recycled glue powder and epoxy resin at high temperature for 140 minutes to obtain a modified epoxy resin matrix, respectively adding the modified epoxy resin matrix, a curing agent and an accelerator into the stable gel, stirring uniformly to obtain glue solution, and finally pouring the glue solution into a glue dipping device of a winding machine;
preparing fibers, namely putting continuous glass fibers on a creel of a winding machine after the continuous glass fibers pass through a glue dipping device, dipping a layer of glue solution on the surface of the continuous glass fibers after the continuous glass fibers pass through the glue dipping device, and fixing the end parts of the dipped continuous glass fibers on a lining die through a fiber conveying frame;
winding and forming, starting a core mold driver and a fiber conveying frame driver of a winding machine to wind the impregnated continuous glass fiber on the surface of a lining mold, wherein the rotation speed of the lining mold is 130r/min, and finishing winding when the winding thickness of the continuous glass fiber on the surface of the lining mold reaches 1.5 cm;
drying and curing, continuously winding a layer of plastic film on the surface of the continuous glass fiber for preventing cracking and resin dripping, and then placing the continuous glass fiber wound with the layer of plastic film on the surface together with a lining mold into a drying oven for drying, wherein the drying time is 40min, and the drying temperature is 110 ℃;
demoulding and finishing, after drying, demoulding by adopting an air pressure method, introducing compressed air between the lining die and the interface of the cured continuous glass fiber, separating and separating the lining die and the cured continuous glass fiber by utilizing the expansion force of the compressed air to obtain a semi-finished product, removing the plastic film on the surface of the semi-finished product, and finishing and leveling the end face of the semi-finished product to obtain the composite glass fiber reinforced plastic cable protective pipe sleeve.
Example 3:
weighing 150 parts of waste cable skin, 50 parts of dibutyl phthalate and 60 parts of dibasic lead phosphite, crushing the waste cable skin by adopting an air expansion refrigeration crushing method, drying to obtain 80-mesh recovered rubber powder, adding the recovered rubber powder, the dibutyl phthalate and the dibasic lead phosphite into a stirring reaction kettle, preplasticizing for 20min at 130 ℃, stirring once every 5min, and drying to obtain preplasticized recovered rubber powder;
weighing 120 parts of n-butyl titanate, 80 parts of acetylacetone, 300 parts of absolute ethyl alcohol, 40 parts of concentrated nitric acid and 100 parts of deionized water, mixing and stirring the n-butyl titanate and the acetylacetone for 1.5h to obtain a modified precursor, adding the absolute ethyl alcohol and the concentrated nitric acid into the modified precursor, stirring for 50min, slowly dropping the deionized water at a dropping rate of 8ml/min, stirring for 4h again to obtain TiO2Sol gel
Weighing 100 parts of epoxy resin, 85 parts of carbon nano tube, 250 parts of preplasticizing recovered rubber powder and TiO2200 parts of sol, 200 parts of continuous glass fiber, 80 parts of composite filler, 10 parts of curing agent, 20 parts of accelerator, 50 parts of absolute ethyl alcohol and 20 parts of release agent;
preparing a core mould, selecting a seamless steel pipe with a corresponding size as a blank of the core mould according to a cable protection pipe sleeve, grinding the surface of the core mould by using a cylindrical grinder, polishing the outer surface of the core mould by using a polishing machine, wherein the surface roughness Ra of the polished core mould is 0.7 mu m, wiping the surface of the core mould by using absolute ethyl alcohol, drying the surface of the core mould, coating a layer of release agent on the surface of the core mould, finally installing the core mould on a core mould driver of a winding machine, winding a layer of plastic film on the outer wall of the core mould, wherein the thickness of the plastic film is 0.16mm, and uniformly coating edible oil on the plastic film to obtain a lining mould;
preparing glue solution, doping carbon nanotubes into TiO2 sol, stirring for 12 hours at room temperature to obtain TiO2 sol doped with the carbon nanotubes, drying for 2.5 hours at 90 ℃ to obtain stable gel, melting and blending pre-plasticized recycled glue powder and epoxy resin at high temperature for 140 minutes to obtain a modified epoxy resin matrix, respectively adding the modified epoxy resin matrix, a curing agent and an accelerator into the stable gel, stirring uniformly to obtain glue solution, and finally pouring the glue solution into a glue dipping device of a winding machine;
preparing fibers, namely putting continuous glass fibers on a creel of a winding machine after the continuous glass fibers pass through a glue dipping device, dipping a layer of glue solution on the surface of the continuous glass fibers after the continuous glass fibers pass through the glue dipping device, and fixing the end parts of the dipped continuous glass fibers on a lining die through a fiber conveying frame;
winding and forming, starting a core mold driver and a fiber conveying frame driver of a winding machine to wind the impregnated continuous glass fiber on the surface of a lining mold, wherein the rotation speed of the lining mold is 130r/min, and finishing winding when the winding thickness of the continuous glass fiber on the surface of the lining mold reaches 1.5 cm;
drying and curing, continuously winding a layer of plastic film on the surface of the continuous glass fiber for preventing cracking and resin dripping, and then placing the continuous glass fiber wound with the layer of plastic film on the surface together with a lining mold into a drying oven for drying, wherein the drying time is 40min, and the drying temperature is 110 ℃;
demoulding and finishing, after drying, demoulding by adopting an air pressure method, introducing compressed air between the lining die and the interface of the cured continuous glass fiber, separating and separating the lining die and the cured continuous glass fiber by utilizing the expansion force of the compressed air to obtain a semi-finished product, removing the plastic film on the surface of the semi-finished product, and finishing and leveling the end face of the semi-finished product to obtain the composite glass fiber reinforced plastic cable protective pipe sleeve.
The performance of the composite glass fiber reinforced plastic cable protective sleeves of examples 1 to 3 was tested, and the test results are shown in table 1.
Table 1 test results of composite glass fiber reinforced plastic cable protective sleeve
Figure BDA0003349236900000121
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (10)

1. A cable protecting sleeve made of composite glass fibre reinforced plastics is composed of epoxy resin, carbon nanotubes, and preplasticizing recoveryGlue powder, TiO2The adhesive comprises sol, continuous glass fiber, composite filler, curing agent, accelerator, absolute ethyl alcohol and release agent, wherein the components are as follows by weight: 100-200 parts of epoxy resin, 70-85 parts of carbon nano tube, 150-250 parts of preplasticized recycled rubber powder and TiO2100-200 parts of sol, 200-250 parts of continuous glass fiber, 50-80 parts of composite filler, 10-15 parts of curing agent, 20-25 parts of accelerator, 50-80 parts of absolute ethyl alcohol and 20-25 parts of release agent.
2. A preparation method of a composite glass fiber reinforced plastic cable protection pipe sleeve is characterized by comprising the following steps: the method comprises the following steps:
s1, preparing a core die, selecting a seamless steel pipe with a corresponding size as a blank of the core die according to a cable protection pipe sleeve, grinding the surface of the core die by using an external grinding machine, polishing the outer surface of the core die by using a polishing machine, wiping the surface of the core die clean by using absolute ethyl alcohol and drying in the air, coating a layer of release agent on the surface of the core die, finally installing the core die on a core die driver of a winding machine, winding a layer of plastic film on the outer wall of the core die, and uniformly coating edible oil on the plastic film to prepare a lining die;
s2, preparing a glue solution, doping the carbon nano tube into the TiO2 sol, stirring for 12 hours at room temperature to obtain TiO2 sol doped with the carbon nano tube, drying for 2.5 hours at 90 ℃ to obtain stable gel, melting and blending pre-plasticized recycled glue powder and epoxy resin at high temperature for 125-140 minutes to obtain a modified epoxy resin matrix, respectively adding the modified epoxy resin matrix, a curing agent and an accelerant into the stable gel, stirring uniformly to obtain a glue solution, and finally pouring the glue solution into a glue soaking device of a winding machine;
s3, preparing fibers, placing the continuous glass fibers on a creel of a winding machine after the continuous glass fibers pass through a glue dipping device, dipping a layer of glue solution on the surface of the continuous glass fibers after the continuous glass fibers pass through the glue dipping device, and fixing the end parts of the dipped continuous glass fibers on a lining die through a fiber conveying frame;
s4, winding and forming, starting a core mold driver and a fiber conveying frame driver of the winding machine to wind the impregnated continuous glass fiber on the surface of the lining mold, wherein the rotation speed of the lining mold is 130 r/min-140 r/min, and finishing winding when the winding thickness of the continuous glass fiber on the surface of the lining mold reaches 1.5 cm-3.5 cm;
s5, drying and curing, continuously winding a layer of plastic film on the surface of the continuous glass fiber to prevent cracking and resin dripping, and then placing the continuous glass fiber wound with a layer of plastic film on the surface together with the lining mold into an oven for drying;
and S6, demolding by adopting an air pressure method after finishing the demolding and the drying, introducing compressed air between the lining mold and the interface of the cured continuous glass fiber, separating and separating the lining mold from the cured continuous glass fiber by utilizing the expansion force of the compressed air to obtain a semi-finished product, removing the plastic film on the surface of the semi-finished product, and trimming the end face of the semi-finished product to be level to obtain the composite glass fiber reinforced plastic cable protective sleeve.
3. The composite glass fiber reinforced plastic cable protective sleeve as claimed in claim 1, wherein: the composite filler is prepared by mixing polymethyl methacrylate, epoxy-terminated polyarylether, polyacrylonitrile-based carbon fiber and silicon carbide fiber according to the mass ratio of 4: 3: 1: 2, the curing agent is diamino diphenylmethane, the accelerator is cobalt naphthenate, and the release agent is MoS2And (3) a release agent.
4. The composite glass fiber reinforced plastic cable protective sleeve as claimed in claim 1, wherein: the preplasticizing recovered rubber powder is prepared by mixing waste cable skin, dibutyl phthalate and dibasic lead phosphite, and the components are as follows according to the weight ratio: 150-200 parts of waste cable skin, 50-70 parts of dibutyl phthalate and 60-75 parts of dibasic lead phosphite.
5. The composite glass fiber reinforced plastic cable protective sleeve as claimed in claim 4, wherein: the preparation method of the preplasticizing recovered rubber powder comprises the following steps:
s11, crushing the waste cable skin by adopting an air expansion refrigeration crushing method, and drying to obtain 80-100-mesh recovered rubber powder;
s12, adding the recovered rubber powder, dibutyl phthalate and dibasic lead phosphite into a stirring reaction kettle, preplasticizing at 125-130 ℃ for 15-20 min, stirring once every 5min, and drying to obtain the preplasticized recovered rubber powder.
6. The composite glass fiber reinforced plastic cable protective sleeve as defined in claim 1, wherein: the TiO is2The sol is prepared by mixing n-butyl titanate, acetylacetone, absolute ethyl alcohol, concentrated nitric acid and deionized water, and the components are as follows by weight ratio: 100-120 parts of n-butyl titanate, 50-80 parts of acetylacetone, 200-300 parts of absolute ethyl alcohol, 30-40 parts of concentrated nitric acid and 80-100 parts of deionized water.
7. The composite glass fiber reinforced plastic cable protective sleeve as claimed in claim 6, wherein: the TiO is2The preparation method of the sol comprises the following steps:
s21, mixing and stirring n-butyl titanate and acetylacetone for 1.5h to obtain a modified precursor;
s22, adding absolute ethyl alcohol and concentrated nitric acid into the modified precursor, stirring for 45-50 min, slowly dropping deionized water at a dropping rate of 5-8 ml/min, and stirring for 3-4 h again to obtain TiO2And (3) sol.
8. The method for preparing the composite glass fiber reinforced plastic cable protective sleeve according to claim 2, wherein the method comprises the following steps: the surface roughness Ra of the core mold after polishing treatment in the S2 is 0.7-0.8 μm.
9. The method for preparing the composite glass fiber reinforced plastic cable protective sleeve according to claim 2, wherein the method comprises the following steps: the drying time in the S5 is 40-50 min, and the drying temperature is 110-115 ℃.
10. The method for preparing the composite glass fiber reinforced plastic cable protective sleeve according to claim 2, wherein the method comprises the following steps: the thickness of the plastic film in the S1 is 0.16 mm-0.18 mm.
CN202111332003.1A 2021-11-11 2021-11-11 Composite glass fiber reinforced plastic cable protection pipe sleeve Pending CN114031950A (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104072948A (en) * 2014-06-18 2014-10-01 安徽宁国市高新管业有限公司 Glass fiber reinforced plastic composite material for high-performance cable protection tube
CN105400141A (en) * 2015-12-04 2016-03-16 江西科技师范大学 Preparation method of carbon nano tube doped TiO<2>/ epoxy hybridization fiberglass composite
CN107116781A (en) * 2017-04-01 2017-09-01 青阳县绿通复合材料有限公司 A kind of preparation method of frp cable protective pipe
CN108859171A (en) * 2018-05-17 2018-11-23 绍兴文理学院元培学院 A kind of preparation method of frp cable protective pipe
CN111500054A (en) * 2020-05-22 2020-08-07 江苏爱特恩高分子材料有限公司 Preparation method of waste cable sheath modified wood-like polyurethane

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104072948A (en) * 2014-06-18 2014-10-01 安徽宁国市高新管业有限公司 Glass fiber reinforced plastic composite material for high-performance cable protection tube
CN105400141A (en) * 2015-12-04 2016-03-16 江西科技师范大学 Preparation method of carbon nano tube doped TiO<2>/ epoxy hybridization fiberglass composite
CN107116781A (en) * 2017-04-01 2017-09-01 青阳县绿通复合材料有限公司 A kind of preparation method of frp cable protective pipe
CN108859171A (en) * 2018-05-17 2018-11-23 绍兴文理学院元培学院 A kind of preparation method of frp cable protective pipe
CN111500054A (en) * 2020-05-22 2020-08-07 江苏爱特恩高分子材料有限公司 Preparation method of waste cable sheath modified wood-like polyurethane

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