CN115572428B - Water supply pipe and preparation method thereof - Google Patents

Water supply pipe and preparation method thereof Download PDF

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Publication number
CN115572428B
CN115572428B CN202211224162.4A CN202211224162A CN115572428B CN 115572428 B CN115572428 B CN 115572428B CN 202211224162 A CN202211224162 A CN 202211224162A CN 115572428 B CN115572428 B CN 115572428B
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water supply
supply pipe
mass
ethylene propylene
diene monomer
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CN115572428A (en
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刘小炎
刘栋梁
于广海
刘锦荣
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Jiangxi Tianfeng Construction Group Pipe Industry Technology Co ltd
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Jiangxi Tianfeng Construction Group Pipe Industry Technology Co ltd
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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
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/06—Polyethene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
    • C08J7/04—Coating
    • C08J7/042—Coating with two or more layers, where at least one layer of a composition contains a polymer binder
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
    • C08J7/04—Coating
    • C08J7/0427—Coating with only one layer of a composition containing a polymer binder
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2323/04—Homopolymers or copolymers of ethene
    • C08J2323/06—Polyethene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2483/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers
    • C08J2483/04—Polysiloxanes
    • 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
    • C08K3/02—Elements
    • C08K3/08—Metals
    • C08K2003/0881—Titanium
    • 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
    • C08K3/24—Acids; Salts thereof
    • C08K3/26—Carbonates; Bicarbonates
    • C08K2003/265—Calcium, strontium or barium carbonate
    • 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
    • C08L2207/00—Properties characterising the ingredient of the composition
    • C08L2207/06—Properties of polyethylene
    • C08L2207/062—HDPE

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

The invention discloses a water supply pipe and a preparation method thereof, and belongs to the technical field of water supply pipe preparation. A water feed pipe made of: the material comprises: 70-80% of high-density polyethylene, 5-10% of linear polyethylene resin, 1-5% of carbon black master batch and 10-20% of reinforcing particles; the reinforcing particles are prepared by compounding ethylene propylene diene monomer, paraffin oil, titanium powder and calcium carbonate. The preparation method of the water supply pipe comprises the following steps: s1, heating high-density polyethylene, linear polyethylene resin and carbon black master batch at 100-130 ℃ to obtain a first mixture, and then adding reinforcing particles at 140-160 ℃ to obtain a second mixture; s2, delivering the second mixture into a forming machine for forming, then spraying, cooling, airing and cutting to obtain the water supply pipe. The water supply pipe provided by the invention has the advantage that the tensile strength of the water supply pipe is improved.

Description

Water supply pipe and preparation method thereof
Technical Field
The invention relates to the technical field of water supply pipe preparation, in particular to a water supply pipe and a preparation method thereof.
Background
The water supply pipe is suitable for the fields of life water supply and drainage, chemical industry, pollution discharge, reconstruction of water works, national hydraulic engineering and the like; the water supply pipe is divided into a metal pipe, a composite pipe and a plastic pipe. The metal pipe is mainly divided into a copper pipe and a stainless steel water pipe. The raw materials in the plastic water supply pipe mainly comprise high-density polyethylene at present, the tensile strength of the plastic water supply pipe is poor, and how to improve the tensile strength of the water supply pipe is a difficult problem in the prior art;
in addition, the placement environment of the prepared water supply pipe is usually an open air environment, and continuous sun exposure has a certain influence on the tensile strength of the water supply pipe so as to influence the service life of the water supply pipe, so that how to reduce the influence of sun exposure on the tensile strength of the water supply pipe is a difficult problem in the prior art.
Disclosure of Invention
The invention aims to overcome the technical defects, and provides a water supply pipe and a preparation method thereof, which solve the technical problem of how to improve the influence of the tensile strength of the water supply pipe in the prior art.
In order to achieve the technical purpose, the technical scheme of the invention provides a water supply pipe, which is prepared from the following materials: the material comprises: 70-80% of high-density polyethylene, 5-10% of linear polyethylene resin, 1-5% of carbon black master batch and 10-20% of reinforcing particles; the reinforcing particles are prepared by compounding ethylene propylene diene monomer, paraffin oil, titanium powder and calcium carbonate.
Further, the raw materials of the reinforcing particles comprise, by mass, 70-80% of ethylene propylene diene monomer, 10-20% of paraffin oil, 1-5% of titanium powder and 4-9% of calcium carbonate.
Further, the reinforcing pellet is prepared by the following steps: adding ethylene propylene diene monomer, paraffin oil and titanium powder calcium carbonate into an internal mixer for mixing, discharging rubber into an open mill at 130-150 ℃, adding a vulcanizing agent and an accelerator at the roll temperature of the open mill of 70-80 ℃ for mixing to obtain a mixed material, and then transferring the mixed material into a granulator for granulating to obtain the reinforced particles.
Further, the vulcanizing agent is sulfur, and the accelerator is dithiocarbamate.
Further, the water supply pipe further comprises a first hydrophobic layer, and the first hydrophobic layer covers the inner wall of the water supply pipe.
Further, the water supply pipe further comprises an ultraviolet resistant layer, and the ultraviolet resistant layer covers the outer wall of the water supply pipe.
Further, the water supply pipe further comprises a second hydrophobic layer, and the second hydrophobic layer covers the outer surface of the ultraviolet resistant layer.
In addition, the invention also provides a preparation method of the water supply pipe, which comprises the following steps:
s1, heating high-density polyethylene, linear polyethylene resin and carbon black master batch at 100-130 ℃ to obtain a first mixture, and then adding reinforcing particles at 140-160 ℃ to obtain a second mixture;
s2, delivering the second mixture into a forming machine for forming, then spraying, cooling, airing and cutting to obtain the water supply pipe.
Further, after step S2, the method further includes: the inner wall of the water supply pipe is coated with a mixed material of lotus leaf powder and polydimethylsiloxane, then the temperature is kept at 100-110 ℃, then the temperature is kept at 70-80 ℃, and then the first hydrophobic layer is formed by cooling.
Further, after step S2, the method further includes: the outer wall of the water supply pipe is coated with a mixed material of zinc oxide and organic silicon resin, and then the water supply pipe is insulated at 80-90 ℃ to form an ultraviolet resistant layer.
Compared with the prior art, the invention has the beneficial effects that: in the water supply pipe provided by the invention, the materials in the water supply pipe comprise the following components in percentage by mass: 70-80% of high-density polyethylene, 5-10% of linear polyethylene resin, 1-4% of carbon black master batch and 10-20% of reinforcing particles; the reinforcing particles are prepared by compounding ethylene propylene diene monomer, paraffin oil, titanium powder and calcium carbonate; the reinforced particle is prepared by compounding ethylene propylene diene monomer, paraffin oil, titanium powder and calcium carbonate, the ethylene propylene diene monomer in the reinforced particle has a certain coating effect on the titanium powder and the calcium carbonate under the action of the paraffin oil, and can be coupled with high-density polyethylene, so that components in the reinforced particle can be uniformly distributed in a water supply pipe and have a certain agglomeration force, and the tensile strength of the water supply pipe is improved.
Detailed Description
The specific embodiment provides a water supply pipe, which is made of the following materials: the material comprises the following components in percentage by mass: 70-80% of high-density polyethylene, 5-10% of linear polyethylene resin, 1-4% of carbon black master batch and 10-20% of reinforcing particles; the reinforcing particles are prepared by compounding ethylene propylene diene monomer, paraffin oil, titanium powder and calcium carbonate.
The raw materials of the reinforcing particles comprise, by mass, 70-80% of ethylene propylene diene monomer, 10-20% of paraffin oil, 1-5% of titanium powder and 4-9% of calcium carbonate; the reinforced particles are prepared by the following steps: adding ethylene propylene diene monomer, paraffin oil, titanium powder and calcium carbonate into an internal mixer for mixing, discharging rubber into an open mill at 130-150 ℃, adding a vulcanizing agent and an accelerator for mixing at 70-80 ℃ of the roll temperature of the open mill, and then granulating to obtain reinforced particles; the vulcanizing agent is sulfur, and the accelerator is dithiocarbamate. The vulcanizing agent and the accelerator are added into the open mill at a lower temperature, so that the vulcanization of the ethylene propylene diene monomer rubber is facilitated, the tensile strength of the ethylene propylene diene monomer rubber is improved, and the tensile strength of the water supply pipe is improved.
Although titanium powder in a water supply pipe has a certain hydrophobic function, the effect is limited, the problem that impurities such as sludge are easily accumulated in the pipe exists, water delivery is not facilitated in the past for a long time, and further the self-cleaning effect in the pipe can be improved by covering a first hydrophobic layer on the inner wall of the water pipe, specifically, the following steps are adopted:
in certain embodiments, the water supply pipe further comprises a first hydrophobic layer that covers an inner wall of the water supply pipe.
The produced water supply pipes are large in number and pipe diameter, normally, the water supply pipes are stacked in an open air environment, under the action of long-term rain, the phenomenon that the outer wall of each water supply pipe turns white affects the tensile strength of each water supply pipe, and further the performance and service life of each water supply pipe are affected, based on the fact that the outer wall of each water supply pipe is covered with an ultraviolet-resistant layer, damage caused by sunlight is reduced, and the method is as follows:
in certain embodiments, the water supply pipe further comprises an anti-ultraviolet layer, which covers the outer wall of the water supply pipe.
Although the damage caused by sunlight can be improved by adding the anti-ultraviolet layer, the damage to the water supply pipe can be caused by rain is ignored, so that the second hydrophobic layer is further considered, the stay time of rainwater on the outer wall of the water supply pipe is reduced under the action of the hydrophobic layer, and the damage to the water supply pipe caused by rain is further reduced:
specifically, the water supply pipe further comprises a second hydrophobic layer, and the second hydrophobic layer covers the outer surface of the ultraviolet resistant layer.
In addition, the invention also provides a preparation method of the water supply pipe, which comprises the following steps:
s1, heating high-density polyethylene, linear polyethylene resin and carbon black master batch at 100-130 ℃ for 10-20min to obtain a first mixture, and adding reinforcing particles at 140-160 ℃ and mixing for 2-4min to obtain a second mixture;
s2, delivering the second mixture into a forming machine for forming, then spraying, cooling, airing and cutting to obtain the water supply pipe.
The reinforcing particles are mixed for 2-4min at 140-160 ℃ to realize the mixing of the reinforcing particles and other components in a short time, and the dispersion degree of each component of the reinforcing particles can be reduced, so that after the subsequent cooling, each component in the reinforcing particles is agglomerated together under the action of ethylene propylene diene monomer rubber, and the synergistic effect of each component in the reinforcing particles is facilitated.
In certain embodiments, after step S2, further comprising: coating a mixed material of lotus leaf powder and polydimethylsiloxane on the inner wall of a water supply pipe, then preserving heat for 20-30min at 100-110 ℃, preserving heat for 1-2h at 70-80 ℃, and then cooling to form a first hydrophobic layer; the mass of the lotus leaf is 5-10% of the mass of the polydimethylsiloxane.
The lotus leaf powder is directly coated on the inner wall of the water supply pipe and then dried, so that the problem of poor wear resistance exists, and the lotus leaf powder can be firmly covered on the inner wall of the water supply pipe under the coupling action of polydimethylsiloxane and components in the water supply pipe through high-temperature treatment and then low-temperature treatment without the examination of repeated water flow flushing.
In certain embodiments, after step S2, further comprising: coating a mixed material of zinc oxide, polydimethylsiloxane and organic silicon resin on the outer wall of a water supply pipe, and then preserving heat for 2-3 hours at 80-90 ℃ to form an ultraviolet resistant layer; the mass of the zinc oxide is 1-3% of the mass of the organic silicon resin, and the mass of the polydimethylsiloxane is 5-10% of the mass of the organic silicon resin. The zinc oxide can be solidified on the outer wall of the water supply pipe by heat preservation for 2-3h at 80-90 ℃ to form an ultraviolet-resistant layer, and can be firmly covered on the outer wall of the water supply pipe under the coupling effect of polydimethylsiloxane, the pipe wall and the organic silicon resin and the coating effect of the organic silicon resin.
In certain embodiments, the method further comprises coating the outer surface of the ultraviolet resistant layer with a mixture of lotus leaf powder and polydimethylsiloxane, then incubating at 80-90 ℃ for 2-3 hours, and then cooling to form a second hydrophobic layer. Under the action of the anti-ultraviolet polydimethylsiloxane and the organic silicon resin, the lotus leaf powder can be firmly bonded at a lower temperature.
The High Density Polyethylene (HDPE) of the present invention is a white powder or granular product. No toxicity, no smell, crystallinity of 80-90%, softening point of 125-135 deg.c and use temperature up to 100 deg.c.
The present invention will be described in further detail with reference to the following examples in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Example 1
The embodiment provides a water supply pipe, the water supply pipe is made by following material: the material comprises the following components in percentage by mass: 70% of high-density polyethylene, 5% of linear polyethylene resin, 5% of carbon black master batch and 20% of reinforcing particles; the reinforcing particles are prepared by compounding ethylene propylene diene monomer, paraffin oil, titanium powder and calcium carbonate;
the raw materials of the reinforcing particles comprise, by mass, 80% of ethylene propylene diene monomer, 10% of paraffin oil, 5% of titanium powder and 5% of calcium carbonate; the reinforced particles are prepared by the following steps: adding ethylene propylene diene monomer, paraffin oil, titanium powder and calcium carbonate into an internal mixer for mixing, discharging rubber into an open mill at 140 ℃, adding a vulcanizing agent and an accelerator for mixing at the roller temperature of 75 ℃ of the open mill, and granulating to obtain reinforced particles; the vulcanizing agent is sulfur, and the accelerator is dithiocarbamic acid; the addition mass of the sulfur is 0.5 percent of the mass of the ethylene propylene diene monomer, and the dithiocarbamic acid is 0.3 percent of the mass of the ethylene propylene diene monomer.
The embodiment provides a preparation method of the water supply pipe, which comprises the following steps:
s1, heating high-density polyethylene, linear polyethylene resin and carbon black master batch at 120 ℃ for 15min to obtain a first mixture, and adding reinforcing particles at 150 ℃ and mixing for 3min to obtain a second mixture;
s2, delivering the second mixture into a forming machine for forming, then spraying, cooling, airing and cutting to obtain the water supply pipe.
Example 2
The embodiment provides a water supply pipe, the water supply pipe is made by following material: the material comprises the following components in percentage by mass: 75% of high-density polyethylene, 7% of linear polyethylene resin, 3% of carbon black master batch and 15% of reinforcing particles; the reinforcing particles are prepared by compounding ethylene propylene diene monomer, paraffin oil, titanium powder and calcium carbonate;
the raw materials of the reinforcing particles comprise, by mass, 75% of ethylene propylene diene monomer rubber, 18% of paraffin oil, 3% of titanium powder and 4% of calcium carbonate; the reinforced particles are prepared by the following steps: adding ethylene propylene diene monomer, paraffin oil, titanium powder and calcium carbonate into an internal mixer for mixing, discharging rubber into an open mill at 130 ℃, adding a vulcanizing agent and an accelerator for mixing at the roller temperature of the open mill of 80 ℃, and granulating to obtain reinforced particles; the vulcanizing agent is sulfur, and the accelerator is dithiocarbamic acid; the addition mass of the sulfur is 0.5 percent of the mass of the ethylene propylene diene monomer, and the dithiocarbamic acid is 0.3 percent of the mass of the ethylene propylene diene monomer.
The embodiment provides a preparation method of the water supply pipe, which comprises the following steps:
s1, heating high-density polyethylene, linear polyethylene resin and carbon black master batch at 130 ℃ for 10min to obtain a first mixture, and adding reinforcing particles at 160 ℃ and mixing for 2min to obtain a second mixture;
s2, delivering the second mixture into a forming machine for forming, then spraying, cooling, airing and cutting to obtain the water supply pipe.
Example 3
The embodiment provides a water supply pipe, the water supply pipe is made by following material: the material comprises the following components in percentage by mass: 80% of high-density polyethylene, 9% of linear polyethylene resin, 1% of carbon black master batch and 10% of reinforcing particles; the reinforcing particles are prepared by compounding ethylene propylene diene monomer, paraffin oil, titanium powder and calcium carbonate;
the raw materials of the reinforcing particles comprise, by mass, 70% of ethylene propylene diene monomer rubber, 20% of paraffin oil, 1% of titanium powder and 9% of calcium carbonate; the reinforced particles are prepared by the following steps: adding ethylene propylene diene monomer, paraffin oil, titanium powder and calcium carbonate into an internal mixer for mixing, discharging rubber into an open mill at 150 ℃, adding a vulcanizing agent and an accelerator for mixing at the roller temperature of the open mill of 70 ℃, and granulating to obtain reinforced particles; the vulcanizing agent is sulfur, and the accelerator is dithiocarbamic acid; the addition mass of the sulfur is 0.5 percent of the mass of the ethylene propylene diene monomer, and the dithiocarbamic acid is 0.3 percent of the mass of the ethylene propylene diene monomer.
The embodiment provides a preparation method of the water supply pipe, which comprises the following steps:
s1, heating high-density polyethylene, linear polyethylene resin and carbon black master batch at 100 ℃ for 20min to obtain a first mixture, and adding reinforcing particles at 140 ℃ and mixing for 4min to obtain a second mixture;
s2, delivering the second mixture into a forming machine for forming, then spraying, cooling, airing and cutting to obtain the water supply pipe.
Example 4
The embodiment provides a water supply pipe, the water supply pipe is made by following material: the material comprises the following components in percentage by mass: 70% of high-density polyethylene, 5% of linear polyethylene resin, 5% of carbon black master batch and 20% of reinforcing particles; the reinforcing particles are prepared by compounding ethylene propylene diene monomer, paraffin oil, titanium powder and calcium carbonate; the water supply pipe further comprises a first hydrophobic layer, and the first hydrophobic layer covers the inner wall of the water supply pipe.
The raw materials of the reinforcing particles comprise, by mass, 80% of ethylene propylene diene monomer, 10% of paraffin oil, 5% of titanium powder and 5% of calcium carbonate; the reinforced particles are prepared by the following steps: adding ethylene propylene diene monomer, paraffin oil, titanium powder and calcium carbonate into an internal mixer for mixing, discharging rubber into an open mill at 140 ℃, adding a vulcanizing agent and an accelerator for mixing at the roller temperature of 75 ℃ of the open mill, and granulating to obtain reinforced particles; the vulcanizing agent is sulfur, and the accelerator is dithiocarbamic acid; the addition mass of the sulfur is 0.5 percent of the mass of the ethylene propylene diene monomer, and the dithiocarbamic acid is 0.3 percent of the mass of the ethylene propylene diene monomer.
The embodiment provides a preparation method of the water supply pipe, which comprises the following steps:
s1, heating high-density polyethylene, linear polyethylene resin and carbon black master batch at 120 ℃ for 15min to obtain a first mixture, and adding reinforcing particles at 150 ℃ and mixing for 3min to obtain a second mixture;
s2, delivering the second mixture into a forming machine for forming, then spraying for cooling, airing, and cutting to obtain the water supply pipe;
s3, coating a mixed material of lotus leaf powder and polydimethylsiloxane on the inner wall of a water supply pipe, then preserving heat at 105 ℃ for 25min, preserving heat at 70 ℃ for 2h, and then cooling to form a first hydrophobic layer; the mass of the lotus leaf is 5% of the mass of the polydimethylsiloxane.
Example 5
The embodiment provides a water supply pipe, the water supply pipe is made by following material: the material comprises the following components in percentage by mass: 75% of high-density polyethylene, 7% of linear polyethylene resin, 3% of carbon black master batch and 15% of reinforcing particles; the reinforcing particles are prepared by compounding ethylene propylene diene monomer, paraffin oil, titanium powder and calcium carbonate; the water supply pipe further comprises a first hydrophobic layer, and the first hydrophobic layer covers the inner wall of the water supply pipe.
The raw materials of the reinforcing particles comprise, by mass, 75% of ethylene propylene diene monomer rubber, 18% of paraffin oil, 3% of titanium powder and 4% of calcium carbonate; the reinforced particles are prepared by the following steps: adding ethylene propylene diene monomer, paraffin oil, titanium powder and calcium carbonate into an internal mixer for mixing, discharging rubber into an open mill at 130 ℃, adding a vulcanizing agent and an accelerator for mixing at the roller temperature of the open mill of 80 ℃, and granulating to obtain reinforced particles; the vulcanizing agent is sulfur, and the accelerator is dithiocarbamic acid; the addition mass of the sulfur is 0.5 percent of the mass of the ethylene propylene diene monomer, and the dithiocarbamic acid is 0.3 percent of the mass of the ethylene propylene diene monomer.
The embodiment provides a preparation method of the water supply pipe, which comprises the following steps:
s1, heating high-density polyethylene, linear polyethylene resin and carbon black master batch at 100130 ℃ for 10min to obtain a first mixture, and adding reinforcing particles at 160 ℃ and mixing for 2min to obtain a second mixture;
s2, delivering the second mixture into a forming machine for forming, then spraying for cooling, airing, and cutting to obtain the water supply pipe;
s3, coating a mixed material of lotus leaf powder and polydimethylsiloxane on the inner wall of a water supply pipe, then preserving heat at 100 ℃ for 30min, preserving heat at 75 ℃ for 1.5h, and then cooling to form a first hydrophobic layer; the mass of the lotus leaf is 10% of the mass of the polydimethylsiloxane.
Example 6
The embodiment provides a water supply pipe, the water supply pipe is made by following material: the material comprises the following components in percentage by mass: 80% of high-density polyethylene, 9% of linear polyethylene resin, 1% of carbon black master batch and 10% of reinforcing particles; the reinforcing particles are prepared by compounding ethylene propylene diene monomer, paraffin oil, titanium powder and calcium carbonate; the water supply pipe further comprises a first hydrophobic layer, and the first hydrophobic layer covers the inner wall of the water supply pipe.
The raw materials of the reinforcing particles comprise, by mass, 70% of ethylene propylene diene monomer rubber, 20% of paraffin oil, 1% of titanium powder and 9% of calcium carbonate; the reinforced particles are prepared by the following steps: adding ethylene propylene diene monomer, paraffin oil, titanium powder and calcium carbonate into an internal mixer for mixing, discharging rubber into an open mill at 150 ℃, adding a vulcanizing agent and an accelerator for mixing at the roller temperature of the open mill of 70 ℃, and granulating to obtain reinforced particles; the vulcanizing agent is sulfur, and the accelerator is dithiocarbamic acid; the addition mass of the sulfur is 0.5 percent of the mass of the ethylene propylene diene monomer, and the dithiocarbamic acid is 0.3 percent of the mass of the ethylene propylene diene monomer.
The embodiment provides a preparation method of the water supply pipe, which comprises the following steps:
s1, heating high-density polyethylene, linear polyethylene resin and carbon black master batch at 100 ℃ for 20min to obtain a first mixture, and adding reinforcing particles at 140 ℃ and mixing for 4min to obtain a second mixture;
s2, delivering the second mixture into a forming machine for forming, then spraying for cooling, airing, and cutting to obtain the water supply pipe;
s3, coating a mixed material of lotus leaf powder and polydimethylsiloxane on the inner wall of a water supply pipe, then preserving heat at 110 ℃ for 20min, preserving heat at 80 ℃ for 1h, and then cooling to form a first hydrophobic layer; the mass of the lotus leaf is 8% of the mass of the polydimethylsiloxane.
Example 7
The embodiment provides a water supply pipe, the water supply pipe is made by following material: the material comprises the following components in percentage by mass: 70% of high-density polyethylene, 5% of linear polyethylene resin, 5% of carbon black master batch and 20% of reinforcing particles; the reinforcing particles are prepared by compounding ethylene propylene diene monomer, paraffin oil, titanium powder and calcium carbonate; the water supply pipe further comprises an ultraviolet resistant layer, and the ultraviolet resistant layer is covered on the outer wall of the water supply pipe.
The raw materials of the reinforcing particles comprise, by mass, 80% of ethylene propylene diene monomer, 10% of paraffin oil, 5% of titanium powder and 5% of calcium carbonate; the reinforced particles are prepared by the following steps: adding ethylene propylene diene monomer, paraffin oil, titanium powder and calcium carbonate into an internal mixer for mixing, discharging rubber into an open mill at 140 ℃, adding a vulcanizing agent and an accelerator for mixing at the roller temperature of 75 ℃ of the open mill, and granulating to obtain reinforced particles; the vulcanizing agent is sulfur, and the accelerator is dithiocarbamic acid; the addition mass of the sulfur is 0.5 percent of the mass of the ethylene propylene diene monomer, and the dithiocarbamic acid is 0.3 percent of the mass of the ethylene propylene diene monomer.
The embodiment provides a preparation method of the water supply pipe, which comprises the following steps:
s1, heating high-density polyethylene, linear polyethylene resin and carbon black master batch at 120 ℃ for 15min to obtain a first mixture, and adding reinforcing particles at 150 ℃ and mixing for 3min to obtain a second mixture;
s2, delivering the second mixture into a forming machine for forming, then spraying for cooling, airing, and cutting to obtain the water supply pipe;
s3, coating a mixed material of zinc oxide, polydimethylsiloxane and organic silicon resin on the outer wall of the water supply pipe, and then preserving heat at 80 ℃ for 3 hours to form an ultraviolet resistant layer; the mass of the zinc oxide is 1% of the mass of the organic silicon resin, and the mass of the polydimethylsiloxane is 7% of the mass of the organic silicon resin.
Example 8
The embodiment provides a water supply pipe, the water supply pipe is made by following material: the material comprises the following components in percentage by mass: 75% of high-density polyethylene, 7% of linear polyethylene resin, 3% of carbon black master batch and 15% of reinforcing particles; the reinforcing particles are prepared by compounding ethylene propylene diene monomer, paraffin oil, titanium powder and calcium carbonate; the water supply pipe further comprises an ultraviolet resistant layer, and the ultraviolet resistant layer is covered on the outer wall of the water supply pipe.
The raw materials of the reinforcing particles comprise, by mass, 75% of ethylene propylene diene monomer rubber, 18% of paraffin oil, 3% of titanium powder and 4% of calcium carbonate; the reinforced particles are prepared by the following steps: adding ethylene propylene diene monomer, paraffin oil, titanium powder and calcium carbonate into an internal mixer for mixing, discharging rubber into an open mill at 130 ℃, adding a vulcanizing agent and an accelerator for mixing at the roller temperature of the open mill of 80 ℃, and granulating to obtain reinforced particles; the vulcanizing agent is sulfur, and the accelerator is dithiocarbamic acid; the addition mass of the sulfur is 0.5 percent of the mass of the ethylene propylene diene monomer, and the dithiocarbamic acid is 0.3 percent of the mass of the ethylene propylene diene monomer.
The embodiment provides a preparation method of the water supply pipe, which comprises the following steps:
s1, heating high-density polyethylene, linear polyethylene resin and carbon black master batch at 130 ℃ for 10min to obtain a first mixture, and adding reinforcing particles at 160 ℃ and mixing for 2min to obtain a second mixture;
s2, delivering the second mixture into a forming machine for forming, then spraying for cooling, airing, and cutting to obtain the water supply pipe;
s3, coating a mixed material of zinc oxide, polydimethylsiloxane and organic silicon resin on the outer wall of the water supply pipe, and then preserving heat for 2.5 hours at 85 ℃ to form an ultraviolet resistant layer; the mass of the zinc oxide is 2% of the mass of the organic silicon resin, and the mass of the polydimethylsiloxane is 5% of the mass of the organic silicon resin.
Example 9
The embodiment provides a water supply pipe, the water supply pipe is made by following material: the material comprises the following components in percentage by mass: 80% of high-density polyethylene, 9% of linear polyethylene resin, 1% of carbon black master batch and 10% of reinforcing particles; the reinforcing particles are prepared by compounding ethylene propylene diene monomer, paraffin oil, titanium powder and calcium carbonate; the water supply pipe further comprises an ultraviolet resistant layer, and the ultraviolet resistant layer is covered on the outer wall of the water supply pipe.
The raw materials of the reinforcing particles comprise, by mass, 70% of ethylene propylene diene monomer rubber, 20% of paraffin oil, 1% of titanium powder and 9% of calcium carbonate; the reinforced particles are prepared by the following steps: adding ethylene propylene diene monomer, paraffin oil, titanium powder and calcium carbonate into an internal mixer for mixing, discharging rubber into an open mill at 150 ℃, adding a vulcanizing agent and an accelerator for mixing at the roller temperature of the open mill of 70 ℃, and granulating to obtain reinforced particles; the vulcanizing agent is sulfur, and the accelerator is dithiocarbamic acid; the addition mass of the sulfur is 0.5 percent of the mass of the ethylene propylene diene monomer, and the dithiocarbamic acid is 0.3 percent of the mass of the ethylene propylene diene monomer.
The embodiment provides a preparation method of the water supply pipe, which comprises the following steps:
s1, heating high-density polyethylene, linear polyethylene resin and carbon black master batch at 100 ℃ for 20min to obtain a first mixture, and adding reinforcing particles at 140 ℃ and mixing for 4min to obtain a second mixture;
s2, delivering the second mixture into a forming machine for forming, then spraying for cooling, airing, and cutting to obtain the water supply pipe;
s3, coating a mixed material of zinc oxide, polydimethylsiloxane and organic silicon resin on the outer wall of the water supply pipe, and then preserving heat for 2 hours at 90 ℃ to form an anti-ultraviolet layer; the mass of the zinc oxide is 3% of the mass of the organic silicon resin, and the mass of the polydimethylsiloxane is 10% of the mass of the organic silicon resin.
Example 10
The embodiment provides a water supply pipe, the water supply pipe is made by following material: the material comprises the following components in percentage by mass: 70% of high-density polyethylene, 5% of linear polyethylene resin, 5% of carbon black master batch and 20% of reinforcing particles; the reinforcing particles are prepared by compounding ethylene propylene diene monomer, paraffin oil, titanium powder and calcium carbonate; the water supply pipe further comprises a first hydrophobic layer, and the first hydrophobic layer covers the inner wall of the water supply pipe; the water supply pipe further comprises an ultraviolet resistant layer, and the ultraviolet resistant layer is covered on the outer wall of the water supply pipe.
The raw materials of the reinforcing particles comprise, by mass, 80% of ethylene propylene diene monomer, 10% of paraffin oil, 5% of titanium powder and 5% of calcium carbonate; the reinforced particles are prepared by the following steps: adding ethylene propylene diene monomer, paraffin oil, titanium powder and calcium carbonate into an internal mixer for mixing, discharging rubber into an open mill at 140 ℃, adding a vulcanizing agent and an accelerator for mixing at the roller temperature of 75 ℃ of the open mill, and granulating to obtain reinforced particles; the vulcanizing agent is sulfur, and the accelerator is dithiocarbamic acid; the addition mass of the sulfur is 0.5 percent of the mass of the ethylene propylene diene monomer, and the dithiocarbamic acid is 0.3 percent of the mass of the ethylene propylene diene monomer.
The embodiment provides a preparation method of the water supply pipe, which comprises the following steps:
s1, heating high-density polyethylene, linear polyethylene resin and carbon black master batch at 120 ℃ for 15min to obtain a first mixture, and adding reinforcing particles at 150 ℃ and mixing for 3min to obtain a second mixture;
s2, delivering the second mixture into a forming machine for forming, then spraying for cooling, airing, and cutting to obtain the water supply pipe;
s3, coating a mixed material of lotus leaf powder and polydimethylsiloxane on the inner wall of a water supply pipe, then preserving heat at 105 ℃ for 25min, preserving heat at 70 ℃ for 2h, and then cooling to form a first hydrophobic layer; the mass of the lotus leaf is 5% of the mass of the polydimethylsiloxane; then coating a mixed material of zinc oxide, polydimethylsiloxane and organic silicon resin on the outer wall of the water supply pipe, and then preserving heat for 3 hours at 80 ℃ to form an ultraviolet resistant layer; the mass of the zinc oxide is 1% of the mass of the organic silicon resin, and the mass of the polydimethylsiloxane is 7% of the mass of the organic silicon resin.
Example 11
The embodiment provides a water supply pipe, the water supply pipe is made by following material: the material comprises the following components in percentage by mass: 75% of high-density polyethylene, 7% of linear polyethylene resin, 3% of carbon black master batch and 15% of reinforcing particles; the reinforcing particles are prepared by compounding ethylene propylene diene monomer, paraffin oil, titanium powder and calcium carbonate; the water supply pipe further comprises a first hydrophobic layer, and the first hydrophobic layer covers the inner wall of the water supply pipe; the water supply pipe further comprises an ultraviolet resistant layer, and the ultraviolet resistant layer is covered on the outer wall of the water supply pipe.
The raw materials of the reinforcing particles comprise, by mass, 75% of ethylene propylene diene monomer rubber, 18% of paraffin oil, 3% of titanium powder and 4% of calcium carbonate; the reinforced particles are prepared by the following steps: adding ethylene propylene diene monomer, paraffin oil, titanium powder and calcium carbonate into an internal mixer for mixing, discharging rubber into an open mill at 130 ℃, adding a vulcanizing agent and an accelerator for mixing at the roller temperature of the open mill of 80 ℃, and granulating to obtain reinforced particles; the vulcanizing agent is sulfur, and the accelerator is dithiocarbamic acid; the addition mass of the sulfur is 0.5 percent of the mass of the ethylene propylene diene monomer, and the dithiocarbamic acid is 0.3 percent of the mass of the ethylene propylene diene monomer.
The embodiment provides a preparation method of the water supply pipe, which comprises the following steps:
s1, heating high-density polyethylene, linear polyethylene resin and carbon black master batch at 130 ℃ for 10min to obtain a first mixture, and adding reinforcing particles at 160 ℃ and mixing for 2min to obtain a second mixture;
s2, delivering the second mixture into a forming machine for forming, then spraying for cooling, airing, and cutting to obtain the water supply pipe;
s3, coating a mixed material of lotus leaf powder and polydimethylsiloxane on the inner wall of a water supply pipe, then preserving heat at 100 ℃ for 30min, preserving heat at 75 ℃ for 1.5h, and then cooling to form a first hydrophobic layer; the mass of the lotus leaf is 10% of the mass of the polydimethylsiloxane; then coating a mixed material of lotus leaf powder and polydimethylsiloxane on the inner wall of a water supply pipe, preserving heat for 30min at 100 ℃, preserving heat for 1.5h at 75 ℃, and then cooling to form a first hydrophobic layer; the mass of the lotus leaf is 10% of the mass of the polydimethylsiloxane; then coating a mixed material of zinc oxide, polydimethylsiloxane and organic silicon resin on the outer wall of the water supply pipe, and then preserving heat for 2.5 hours at 85 ℃ to form an ultraviolet resistant layer; the mass of the zinc oxide is 2% of the mass of the organic silicon resin, and the mass of the polydimethylsiloxane is 5% of the mass of the organic silicon resin.
Example 12
The embodiment provides a water supply pipe, the water supply pipe is made by following material: the material comprises the following components in percentage by mass: 80% of high-density polyethylene, 9% of linear polyethylene resin, 1% of carbon black master batch and 10% of reinforcing particles; the reinforcing particles are prepared by compounding ethylene propylene diene monomer, paraffin oil, titanium powder and calcium carbonate; the water supply pipe further comprises a first hydrophobic layer, and the first hydrophobic layer covers the inner wall of the water supply pipe; the water supply pipe further comprises an ultraviolet resistant layer, and the ultraviolet resistant layer is covered on the outer wall of the water supply pipe.
The raw materials of the reinforcing particles comprise, by mass, 70% of ethylene propylene diene monomer rubber, 20% of paraffin oil, 1% of titanium powder and 9% of calcium carbonate; the reinforced particles are prepared by the following steps: adding ethylene propylene diene monomer, paraffin oil, titanium powder and calcium carbonate into an internal mixer for mixing, discharging rubber into an open mill at 150 ℃, adding a vulcanizing agent and an accelerator for mixing at the roller temperature of the open mill of 70 ℃, and granulating to obtain reinforced particles; the vulcanizing agent is sulfur, and the accelerator is dithiocarbamic acid; the addition mass of the sulfur is 0.5 percent of the mass of the ethylene propylene diene monomer, and the dithiocarbamic acid is 0.3 percent of the mass of the ethylene propylene diene monomer.
The embodiment provides a preparation method of the water supply pipe, which comprises the following steps:
s1, heating high-density polyethylene, linear polyethylene resin and carbon black master batch at 100 ℃ for 20min to obtain a first mixture, and adding reinforcing particles at 140 ℃ and mixing for 4min to obtain a second mixture;
s2, delivering the second mixture into a forming machine for forming, then spraying for cooling, airing, and cutting to obtain the water supply pipe;
s3, coating a mixed material of lotus leaf powder and polydimethylsiloxane on the inner wall of a water supply pipe, then preserving heat at 110 ℃ for 20min, preserving heat at 80 ℃ for 1h, and then cooling to form a first hydrophobic layer; the mass of the lotus leaf is 8% of the mass of the polydimethylsiloxane; then coating a mixed material of zinc oxide, polydimethylsiloxane and organic silicon resin on the outer wall of the water supply pipe, and then insulating for 2 hours at 90 ℃ to form an ultraviolet resistant layer; the mass of the zinc oxide is 3% of the mass of the organic silicon resin, and the mass of the polydimethylsiloxane is 10% of the mass of the organic silicon resin.
Example 13
The difference between this embodiment and embodiment 10 is that the water supply pipe further includes a second hydrophobic layer, specifically, on the outer wall of embodiment 10, the second hydrophobic layer covers the outer surface of the anti-ultraviolet layer, the outer surface of the anti-ultraviolet layer is coated with a mixture of lotus leaf powder and polydimethylsiloxane, then the mixture is kept at 80-90 ℃ for 2-3 hours, and then cooled to form the second hydrophobic layer, and the mass of the lotus leaf is 10% of the mass of the polydimethylsiloxane.
Comparative example 1
The present comparative example differs from example 1 in that the material of the feed pipe does not contain reinforcing particles, in particular, a feed pipe made of: the material comprises the following components in percentage by mass: 90% of high-density polyethylene, 5% of linear polyethylene resin and 5% of carbon black master batch.
The comparative example provides a preparation method of the water supply pipe, which comprises the following steps:
s1, heating high-density polyethylene, linear polyethylene resin and carbon black master batch at 120 ℃ for 15min to obtain a first mixture;
s2, delivering the first mixture into a forming machine for forming, then spraying, cooling, airing and cutting to obtain the water supply pipe.
Comparative example 2
The present comparative example differs from example 1 in that the components in the reinforcing pellet are added dispersed in the material of the water feed pipe, specifically, a water feed pipe, comprising, in mass percent: 70% of high-density polyethylene, 5% of linear polyethylene resin, 5% of carbon black master batch and 20% of reinforcing material; the reinforcing material comprises 80% of ethylene propylene diene monomer, 10% of paraffin oil, 5% of titanium powder and 5% of calcium carbonate according to mass percentage, and is obtained by mixing the components.
The embodiment provides a preparation method of the water supply pipe, which comprises the following steps:
s1, heating high-density polyethylene, linear polyethylene resin and carbon black master batch at 120 ℃ for 15min to obtain a first mixture, and then adding reinforcing materials at 150 ℃ to mix for 3min to obtain a second mixture;
s2, delivering the second mixture into a forming machine for forming, then spraying, cooling, airing and cutting to obtain the water supply pipe.
Comparative example 3
The material of the water feed pipe of this comparative example was the same as in example 1, but the difference in the preparation method of the water feed pipe was that the water-repellent layer was treated at the same temperature as in example 1, specifically:
the comparative example provides a preparation method of the water supply pipe, which comprises the following steps:
s1, heating high-density polyethylene, linear polyethylene resin and carbon black master batch at 120 ℃ for 15min to obtain a first mixture, and adding reinforcing particles at 150 ℃ and mixing for 3min to obtain a second mixture;
s2, delivering the second mixture into a forming machine for forming, then spraying for cooling, airing, and cutting to obtain the water supply pipe;
s3, coating a mixed material of lotus leaf powder and polydimethylsiloxane on the inner wall of a water supply pipe, then preserving heat at 70 ℃ for 2 hours and 25 minutes, and then cooling to form a first hydrophobic layer; the mass of the lotus leaf is 5% of the mass of the polydimethylsiloxane.
Comparative example 4
The material of the water feed pipe of this comparative example was the same as in example 1, but the difference in the preparation method of the water feed pipe was that the water repellent layer was treated at the same higher temperature as in example 1, specifically:
the comparative example provides a preparation method of the water supply pipe, which comprises the following steps:
s1, heating high-density polyethylene, linear polyethylene resin and carbon black master batch at 120 ℃ for 15min to obtain a first mixture, and adding reinforcing particles at 150 ℃ and mixing for 3min to obtain a second mixture;
s2, delivering the second mixture into a forming machine for forming, then spraying for cooling, airing, and cutting to obtain the water supply pipe;
s3, coating a mixed material of lotus leaf powder and polydimethylsiloxane on the inner wall of a water supply pipe, then preserving heat at 110 ℃ for 2 hours and 25 minutes, and then cooling to form a first hydrophobic layer; the mass of the lotus leaf is 5% of the mass of the polydimethylsiloxane.
Comparative example 5
The present comparative example differs from example 7 in that the uv resistant layer does not contain a silicone resin, and specifically, this example proposes a water feed pipe made of: the material comprises the following components in percentage by mass: 70% of high-density polyethylene, 5% of linear polyethylene resin, 5% of carbon black master batch and 20% of reinforcing particles; the reinforcing particles are prepared by compounding ethylene propylene diene monomer, paraffin oil, titanium powder and calcium carbonate; the water supply pipe further comprises an ultraviolet resistant layer, and the ultraviolet resistant layer is covered on the outer wall of the water supply pipe.
The raw materials of the reinforcing particles comprise, by mass, 80% of ethylene propylene diene monomer, 10% of paraffin oil, 5% of titanium powder and 5% of calcium carbonate; the reinforced particles are prepared by the following steps: adding ethylene propylene diene monomer, paraffin oil, titanium powder and calcium carbonate into an internal mixer for mixing, discharging rubber into an open mill at 140 ℃, adding a vulcanizing agent and an accelerator for mixing at the roller temperature of 75 ℃ of the open mill, and granulating to obtain reinforced particles; the vulcanizing agent is sulfur, and the accelerator is dithiocarbamic acid.
The comparative example provides a preparation method of the water supply pipe, which comprises the following steps:
s1, heating high-density polyethylene, linear polyethylene resin and carbon black master batch at 120 ℃ for 15min to obtain a first mixture, and adding reinforcing particles at 150 ℃ and mixing for 3min to obtain a second mixture;
s2, delivering the second mixture into a forming machine for forming, then spraying for cooling, airing, and cutting to obtain the water supply pipe;
s3, coating a mixed material of zinc oxide and polydimethylsiloxane on the outer wall of the water supply pipe, and then preserving heat at 80 ℃ for 3 hours to form an ultraviolet resistant layer; the mass of the zinc oxide is 1% of the mass of the polydimethylsiloxane.
Comparative example 6
In this comparative example, a water-repellent layer was coated in the water feed pipe of comparative example 2 in the same manner as in example 1 to prepare a water-repellent layer.
The relevant properties of the water supply pipes of examples 1 to 12 and comparative examples 1 to 5 were examined, and their tensile strengths were examined after 100 days and 200 days of outdoor exposure, respectively, and the examination results are shown in Table 1.
TABLE 1 results of measurements of the relative Performance of the feed pipes of examples 1-12 and comparative examples 1-5
As can be seen from Table 1, the water supply pipes of examples 1 to 12 all had higher tensile strength, the water supply pipe of comparative example 1 had lower tensile strength because no reinforcing particles were added, the water supply pipe of comparative example 2 had no significant improvement in tensile strength because the components of the reinforcing particles were added in a dispersed manner, the water supply pipes of comparative examples 3 to 5 had higher tensile strength, the water supply pipes of examples 1 to 12 had tensile strengths which were not significantly different, the tensile strength was not significantly changed after 100 days of exposure, but the tensile strength of the water supply pipes of examples 1 to 6 was significantly reduced after 200 days of exposure, and the tensile strength of the water supply pipes of examples 7 to 12 was also significantly reduced, and the tensile strength of the water supply pipes of comparative examples 1 to 5 was also variously reduced.
Further, the water supply pipes of example 10 and example 13 were continuously sprayed with water on the outer surface of the water supply pipe at 13 to 14 points of daily sun exposure, and the tensile strength was compared between 100 days and 200 days, and the results are shown in Table 2.
Table 2:
as can be seen from table 2, the shower treatment has a large influence on the water supply pipe of example 10, but has a small influence on the water supply pipe of example 13.
The contact angles of the inner walls of the water supply pipes of examples 1 to 6 and comparative examples 1 to 5 and the contact angles after washing the inner walls 200 times with water were examined, and the results are shown in Table 3.
Table 3:
as can be seen from Table 3, the contact angles of the inner walls of the water supply pipes of examples 1 to 3 were large, the contact angles of comparative examples 1 to 2 were small, which may be related to the addition of reinforcing particles and the action of the components in the reinforcing particles, the contact angles of the inner walls of the water supply pipes of examples 4 to 6 were all 150℃or more, which exhibited superhydrophobic properties and were able to withstand the test of multiple washings, whereas the contact angles of comparative examples 3 to 4 were significantly smaller after multiple washings although they had large contact angles, which may be related to the effect of the treatment with temperature on the firmness of the water-repellent layer, and the contact angles of comparative example 6 were also significantly smaller after multiple washings, indicating that the contact angles were also related to the reinforcing particles in the water supply pipe.
The above-described embodiments of the present invention do not limit the scope of the present invention. Any other corresponding changes and modifications made in accordance with the technical idea of the present invention shall be included in the scope of the claims of the present invention.

Claims (9)

1. A water feed pipe, characterized in that it is made of the following materials: the material comprises: 70-80% of high-density polyethylene, 5-10% of linear polyethylene resin, 1-5% of carbon black master batch and 10-20% of reinforcing particles;
the reinforced particles are prepared by the following steps: adding ethylene propylene diene monomer, paraffin oil, titanium powder and calcium carbonate into an internal mixer for mixing, discharging rubber into an open mill at 130-150 ℃, adding a vulcanizing agent and an accelerator at the roller temperature of the open mill of 70-80 ℃ for mixing to obtain a mixed material, and then transferring the mixed material into a granulator for granulating to obtain the reinforced particles.
2. The water supply pipe according to claim 1, wherein the raw materials of the reinforcing particles comprise, by mass, 70-80% of ethylene propylene diene monomer, 10-20% of paraffin oil, 1-5% of titanium powder and 4-9% of calcium carbonate.
3. The water supply pipe according to claim 2, wherein the vulcanizing agent is sulfur and the accelerator is dithiocarbamate.
4. The water supply pipe of claim 1, further comprising a first hydrophobic layer overlying an inner wall of the water supply pipe.
5. The water supply pipe of claim 1, further comprising an anti-uv layer overlying an outer wall of the water supply pipe.
6. The water supply pipe of claim 5, further comprising a second hydrophobic layer covering an outer surface of the uv resistant layer.
7. The preparation method of the water supply pipe is characterized by comprising the following steps of:
s1, heating high-density polyethylene, linear polyethylene resin and carbon black master batch at 100-130 ℃ to obtain a first mixture, and then adding reinforcing particles at 140-160 ℃ to obtain a second mixture; wherein the proportion of the materials is as follows: 70-80% of high-density polyethylene, 5-10% of linear polyethylene resin, 1-5% of carbon black master batch and 10-20% of reinforcing particles;
the reinforced particles are prepared by the following steps: adding ethylene propylene diene monomer, paraffin oil, titanium powder and calcium carbonate into an internal mixer for mixing, discharging rubber into an open mill at 130-150 ℃, adding a vulcanizing agent and an accelerator at 70-80 ℃ of the roll temperature of the open mill for mixing to obtain a mixed material, and then transferring the mixed material into a granulator for granulating to obtain the reinforced particles;
s2, delivering the second mixture into a forming machine for forming, then spraying, cooling, airing and cutting to obtain the water supply pipe.
8. The method for manufacturing a water supply pipe according to claim 7, further comprising, after step S2: the inner wall of the water supply pipe is coated with a mixed material of lotus leaf powder and polydimethylsiloxane, then the temperature is kept at 100-110 ℃, then the temperature is kept at 70-80 ℃, and then the first hydrophobic layer is formed by cooling.
9. The method for manufacturing a water supply pipe according to claim 7 or 8, characterized by further comprising, after step S2: the outer wall of the water supply pipe is coated with a mixed material of zinc oxide and organic silicon resin, and then the water supply pipe is insulated at 80-90 ℃ to form an ultraviolet resistant layer.
CN202211224162.4A 2022-10-08 2022-10-08 Water supply pipe and preparation method thereof Active CN115572428B (en)

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Publication number Priority date Publication date Assignee Title
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CN104448465A (en) * 2014-11-05 2015-03-25 河南联塑实业有限公司 PE water feed pipe for non-excavation directional drilling construction and preparation method of PE water feed pipe
CN107573568A (en) * 2017-10-11 2018-01-12 福建晟扬管道科技有限公司 PE water supply pipe
CN112679836A (en) * 2019-10-18 2021-04-20 中国石油化工股份有限公司 Water supply pipe composition and preparation method thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003093363A1 (en) * 2002-04-30 2003-11-13 Solvay Polyolefins Europe- Belgium (S.A.) Polyethylene pipe resins
CN104448465A (en) * 2014-11-05 2015-03-25 河南联塑实业有限公司 PE water feed pipe for non-excavation directional drilling construction and preparation method of PE water feed pipe
CN107573568A (en) * 2017-10-11 2018-01-12 福建晟扬管道科技有限公司 PE water supply pipe
CN112679836A (en) * 2019-10-18 2021-04-20 中国石油化工股份有限公司 Water supply pipe composition and preparation method thereof

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