CN107286428A - A kind of anti-corrosion pipe material of supply equipment and preparation method thereof - Google Patents
A kind of anti-corrosion pipe material of supply equipment and preparation method thereof Download PDFInfo
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- CN107286428A CN107286428A CN201710566175.2A CN201710566175A CN107286428A CN 107286428 A CN107286428 A CN 107286428A CN 201710566175 A CN201710566175 A CN 201710566175A CN 107286428 A CN107286428 A CN 107286428A
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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
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- 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
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- 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
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3045—Sulfates
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- 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
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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
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/18—Applications used for pipes
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- 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
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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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)
- Compositions Of Macromolecular Compounds (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
- Lubricants (AREA)
Abstract
The invention discloses a kind of anti-corrosion pipe material of supply equipment, include following raw material according to parts by weight：3 ~ 10 parts of polyvinyl resin, 5 ~ 10 parts of nano particle, 5 ~ 10 parts of carbon black, 2 ~ 7 parts of rilanit special, 2 ~ 10 parts of sodium alkyl sulfonate, 2 ~ 7 parts of chlorofluoromethane, 3 ~ 11 parts of diethylaluminum chloride, 1 ~ 3 part of acrylonitrile butadient styrene, 3 ~ 9 parts of silane coupler, 2.5 ~ 4.5 parts of antioxidant, 0.5 ~ 6.5 part of preservative, 1.5 ~ 3.5 parts of lubricant.The present invention provides a kind of anti-corrosion pipe material of supply equipment and preparation method thereof, pipeline material is prepared by suitable raw material choice and method, using polyvinyl resin as raw material, the pipeline material prepared has good mechanical performance, impact resistance and anticorrosive anti-aging, excellent combination property.
Description
Technical field
The invention belongs to water supply line field, and in particular to a kind of anti-corrosion pipe material of supply equipment and its preparation
Method.
Background technology
Pipeline be with pipe, pipe connector and valve etc. be connected into be used for convey gas, liquid or with solid particle
Fluid device.Generally, after fluid is pressurized through air blower, compressor, pump and boiler etc., low pressure is flowed at the high pressure of pipeline
Place, can also be used pressure or the gravity conveying of fluid itself.Having many uses for pipeline is general, be used primarily in feedwater, draining, heat supply,
Give gas, long distance delivery oil and natural gas, agricultural irrigation, in hydraulic engineering and various commercial plants.
Water supply line in most cases, is embedded to below ground for a long time, but the environment of subsurface is complex so that water pipe
The problems such as easily being ruptured by burn into.
The content of the invention
In view of the above-mentioned problems, the technical problem to be solved in the present invention is to provide a kind of anti-corrosion pipe material of supply equipment
Material and preparation method thereof.
To achieve the above object, the technical scheme is that：A kind of anti-corrosion pipe material of supply equipment, according to
Parts by weight include following raw material：3 ~ 10 parts of polyvinyl resin, 5 ~ 10 parts of nano particle, 5 ~ 10 parts of carbon black, rilanit special 2 ~ 7
Part, 2 ~ 10 parts of sodium alkyl sulfonate, 2 ~ 7 parts of chlorofluoromethane, 3 ~ 11 parts of diethylaluminum chloride, acrylonitrile-butadiene-styrene (ABS) copolymerization
1 ~ 3 part of thing, 3 ~ 9 parts of silane coupler, 2.5 ~ 4.5 parts of antioxidant, 0.5 ~ 6.5 part of preservative, 1.5 ~ 3.5 parts of lubricant.
Further, 3 parts of polyvinyl resin, 5 parts of nano particle, 5 parts of carbon black, 2 parts of rilanit special, sodium alkyl sulfonate 2
It is part, 2 parts of chlorofluoromethane, 3 parts of diethylaluminum chloride, 1 part of acrylonitrile-butadiene-styrene copolymer, 3 parts of silane coupler, anti-
2.5 parts of oxygen agent, 0.5 part of preservative, 1.5 parts of lubricant.
Further, the nano particle is nanometer titanium dioxide and one kind or combinations thereof in nanometer magnesium sulfate
Thing.
Further, the silane coupler is selected from gamma-amino propyl trimethoxy silicane, the ethoxy of gamma-amino propyl group three
Base silane, γ-expoxy propane base propyl group front three oxosilane, γ-expoxy propane base propyl-triethoxysilicane, N- (beta-amino second
Base)-gamma-amino hydroxypropyl methyl diethoxy silane, N- (beta-aminoethyl)-gamma-amino propyl trimethoxy silicane, N- (β-
Amino-ethyl)-γ aminopropyltriethoxy silane, γ-expoxy propane base hydroxypropyl methyl diethoxy silane and its group each other
One of which in conjunction.
Further, one kind in potassium sorbate, sodium benzoate, dimethylbenzene or methyl hydroxybenzoate of the preservative or
Their mixture of person.
A kind of preparation method of the anti-corrosion pipe material of supply equipment, is mainly included the following steps that：
Step 1：Water is placed in reactor and heated, when water temperature reaches 200 DEG C, polyvinyl resin, nano particle, charcoal is added
Black, rilanit special is stirred, and stir speed (S.S.) is 60 ~ 80r/min, until completely dissolved, stops heating, while adding alkyl
Sodium sulfonate, chlorofluoromethane, diethylaluminum chloride stir 5 ~ 15min, add acrylonitrile-butadiene-styrene copolymer, silane
After coupling agent, 5 ~ 20min of stirring, after obtaining mixed material after natural cooling；
Step 2：Antioxidant, preservative, lubricant are placed in mixer, at normal temperatures under the conditions of be stirred mixing, stir
Speed is 80 ~ 150r/min, and stir speed (S.S.) is 70 ~ 90r/min, and 1 ~ 2h of natural froth breaking is placed in froth breaking pond after the completion of stirring；
Step 3：The material obtained in the mixed material and step 2 that are obtained in step 1 is placed in mixer by stirring mixing,
Stir speed (S.S.) is 80 ~ 150 turns/min, obtains slurry, and obtained slurry finally is placed in into the shaping of vacuum mold forming machine, dried,
Anti-corrosion pipe material is can obtain after the demoulding.
Further, the vacuum in the vacuum mold forming machine in the step 3 is 0.02 ~ 0.06MPa.
Further, add silica in froth breaking pond in the step 2 or organosilicon polymer is used as defoamer.
The beneficial effects of the present invention are：The present invention provides anti-corrosion pipe material and its preparation of a kind of supply equipment
Method, pipeline material is prepared by suitable raw material choice and method, using polyvinyl resin as raw material, the pipeline material prepared
Material has good mechanical performance, impact resistance and anticorrosive anti-aging, excellent combination property.Polyvinyl resin is that a kind of performance is excellent
Good thermoplastic synthetic resin, nonhazardous small with density, it is easy to the characteristics of processing, can with riser tubing impact strength and
It is buckling, while being also added into antioxidant and preservative so that water supply line is embedded in underground for a long time has well corrosion-resistant
Performance.Test data shows that the polyethylene pipe tensile strength of material of preparation is more than 49.5MPa, and normal temperature notch impact strength is big
In 11.3KJ/m2, falling ball impact test result shows equal crack-free.
The preparation technology of the present invention is also relatively simple, and pollution-free, cost is relatively low.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to embodiments, to the present invention
It is described in further detail.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, do not limit
The fixed present invention.
Embodiment 1
A kind of anti-corrosion pipe material of supply equipment, includes following raw material according to parts by weight：Polyvinyl resin 3 part, nanometer
5 parts of particle, 5 parts of carbon black, 2 parts of rilanit special, 2 parts of sodium alkyl sulfonate, 2 parts of chlorofluoromethane, 3 parts of diethylaluminum chloride, propylene
1 part of nitrile-BS, 3 parts of silane coupler, 2.5 parts of antioxidant, 0.5 part of preservative, 1.5 parts of lubricant.
The nano particle is nanometer titanium dioxide and one kind or their compositions in nanometer magnesium sulfate.
The silane coupler be selected from gamma-amino propyl trimethoxy silicane, γ aminopropyltriethoxy silane, γ-
Expoxy propane base propyl group front three oxosilane, γ-expoxy propane base propyl-triethoxysilicane, N- (beta-aminoethyl)-gamma-amino
Hydroxypropyl methyl diethoxy silane, N- (beta-aminoethyl)-gamma-amino propyl trimethoxy silicane, N- (beta-aminoethyl)-
In γ aminopropyltriethoxy silane, γ-expoxy propane base hydroxypropyl methyl diethoxy silane and its combination with one another wherein
It is a kind of.
A kind of in potassium sorbate, sodium benzoate, dimethylbenzene or methyl hydroxybenzoate of the preservative or they
Mixture.
A kind of preparation method of the anti-corrosion pipe material of supply equipment, is mainly included the following steps that：
Step 1：Water is placed in reactor and heated, when water temperature reaches 200 DEG C, polyvinyl resin, nano particle, charcoal is added
Black, rilanit special is stirred, and stir speed (S.S.) is 60r/min, until completely dissolved, stops heating, while adding alkyl sulphur
Sour sodium, chlorofluoromethane, diethylaluminum chloride stirring 5min, add acrylonitrile-butadiene-styrene copolymer, silane coupled
After agent, stirring 5min, after obtaining mixed material after natural cooling；
Step 2：Antioxidant, preservative, lubricant are placed in mixer, at normal temperatures under the conditions of be stirred mixing, stir
Speed is 80r/min, and stir speed (S.S.) is to be placed in froth breaking pond natural froth breaking 1h after the completion of 70r/min, stirring；
Step 3：The material obtained in the mixed material and step 2 that are obtained in step 1 is placed in mixer by stirring mixing,
Stir speed (S.S.) is 80 turns/min, obtains slurry, and obtained slurry finally is placed in into the shaping of vacuum mold forming machine, dried, the demoulding
It can obtain anti-corrosion pipe material afterwards.
The vacuum in vacuum mold forming machine in the step 3 is 0.02MPa.
Silica is added in froth breaking pond or organosilicon polymer is used as defoamer in the step 2.
Embodiment 2
A kind of anti-corrosion pipe material of supply equipment, includes following raw material according to parts by weight：Polyvinyl resin 7 part, nanometer
8 parts of particle, 7 parts of carbon black, 5 parts of rilanit special, 7 parts of sodium alkyl sulfonate, 5 parts of chlorofluoromethane, 8 parts of diethylaluminum chloride, propylene
2 parts of nitrile-BS, 6 parts of silane coupler, 3.5 parts of antioxidant, 4.5 parts of preservative, 2.5 parts of lubricant.
The nano particle is nanometer titanium dioxide and one kind or their compositions in nanometer magnesium sulfate.
The silane coupler be selected from gamma-amino propyl trimethoxy silicane, γ aminopropyltriethoxy silane, γ-
Expoxy propane base propyl group front three oxosilane, γ-expoxy propane base propyl-triethoxysilicane, N- (beta-aminoethyl)-gamma-amino
Hydroxypropyl methyl diethoxy silane, N- (beta-aminoethyl)-gamma-amino propyl trimethoxy silicane, N- (beta-aminoethyl)-
In γ aminopropyltriethoxy silane, γ-expoxy propane base hydroxypropyl methyl diethoxy silane and its combination with one another wherein
It is a kind of.
A kind of in potassium sorbate, sodium benzoate, dimethylbenzene or methyl hydroxybenzoate of the preservative or they
Mixture.
A kind of preparation method of the anti-corrosion pipe material of supply equipment, is mainly included the following steps that：
Step 1：Water is placed in reactor and heated, when water temperature reaches 200 DEG C, polyvinyl resin, nano particle, charcoal is added
Black, rilanit special is stirred, and stir speed (S.S.) is 80r/min, until completely dissolved, stops heating, while adding alkyl sulphur
Sour sodium, chlorofluoromethane, diethylaluminum chloride stirring 15min, add acrylonitrile-butadiene-styrene copolymer, silane coupled
After agent, stirring 20min, after obtaining mixed material after natural cooling；
Step 2：Antioxidant, preservative, lubricant are placed in mixer, at normal temperatures under the conditions of be stirred mixing, stir
Speed is 150r/min, and stir speed (S.S.) is to be placed in froth breaking pond natural froth breaking 2h after the completion of 90r/min, stirring；
Step 3：The material obtained in the mixed material and step 3 that are obtained in step 2 is placed in mixer by stirring mixing,
Stir speed (S.S.) is 120 turns/min, obtains slurry, and obtained slurry finally is placed in into the shaping of vacuum mold forming machine, dried, the demoulding
It can obtain anti-corrosion pipe material afterwards.
The vacuum in vacuum mold forming machine in the step 3 is 0.04MPa.
Silica is added in froth breaking pond or organosilicon polymer is used as defoamer in the step 2.
Embodiment 3
A kind of anti-corrosion pipe material of supply equipment, includes following raw material according to parts by weight：Polyvinyl resin 10 part, nanometer
10 parts of particle, 10 parts of carbon black, 7 parts of rilanit special, 10 parts of sodium alkyl sulfonate, 7 parts of chlorofluoromethane, 11 parts of diethylaluminum chloride,
3 parts of acrylonitrile-butadiene-styrene copolymer, 9 parts of silane coupler, 4.5 parts of antioxidant, 6.5 parts of preservative, lubricant 3.5
Part.
The nano particle is nanometer titanium dioxide and one kind or their compositions in nanometer magnesium sulfate.
The silane coupler be selected from gamma-amino propyl trimethoxy silicane, γ aminopropyltriethoxy silane, γ-
Expoxy propane base propyl group front three oxosilane, γ-expoxy propane base propyl-triethoxysilicane, N- (beta-aminoethyl)-gamma-amino
Hydroxypropyl methyl diethoxy silane, N- (beta-aminoethyl)-gamma-amino propyl trimethoxy silicane, N- (beta-aminoethyl)-
In γ aminopropyltriethoxy silane, γ-expoxy propane base hydroxypropyl methyl diethoxy silane and its combination with one another wherein
It is a kind of.
A kind of in potassium sorbate, sodium benzoate, dimethylbenzene or methyl hydroxybenzoate of the preservative or they
Mixture.
A kind of preparation method of the anti-corrosion pipe material of supply equipment, is mainly included the following steps that：
Step 1：Water is placed in reactor and heated, when water temperature reaches 200 DEG C, polyvinyl resin, nano particle, charcoal is added
Black, rilanit special is stirred, and stir speed (S.S.) is 80r/min, until completely dissolved, stops heating, while adding alkyl sulphur
Sour sodium, chlorofluoromethane, diethylaluminum chloride stirring 15min, add acrylonitrile-butadiene-styrene copolymer, silane coupled
After agent, stirring 20min, after obtaining mixed material after natural cooling；
Step 2：Antioxidant, preservative, lubricant are placed in mixer, at normal temperatures under the conditions of be stirred mixing, stir
Speed is 150r/min, and stir speed (S.S.) is to be placed in froth breaking pond natural froth breaking 2h after the completion of 90r/min, stirring；
Step 3：The material obtained in the mixed material and step 2 that are obtained in step 1 is placed in mixer by stirring mixing,
Stir speed (S.S.) is 150 turns/min, obtains slurry, and obtained slurry finally is placed in into the shaping of vacuum mold forming machine, dried, the demoulding
It can obtain anti-corrosion pipe material afterwards.
The vacuum in vacuum mold forming machine in the step 3 is 0.06MPa.
Silica is added in froth breaking pond or organosilicon polymer is used as defoamer in the step 2.
Performance test
Normal temperature notch impact strength, tensile strength performance test are carried out to the present embodiment 1, embodiment 2, embodiment 3, and with existing
There is technology to be compared as a control group, the following form of test result：
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Control group | |
| Normal temperature notch impact strength（KJ/m2） | 11.3 | 11.6 | 12.8 | 10.9 |
| Tensile strength（MPa） | 53.4 | 55.6 | 49.5 | 38.2 |
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, although with reference to the foregoing embodiments
The present invention is described in detail, for those skilled in the art, it still can be to foregoing embodiments institute
The technical scheme of record is modified, or carries out equivalent substitution to which part technical characteristic.It is all the present invention spirit and
Within principle, any modification, equivalent substitution and improvements made etc. should be included in the scope of the protection.
Claims (8)
1. the anti-corrosion pipe material of a kind of supply equipment, it is characterised in that include following raw material according to parts by weight：Polyethylene
3 ~ 10 parts of resin, 5 ~ 10 parts of nano particle, 5 ~ 10 parts of carbon black, 2 ~ 7 parts of rilanit special, 2 ~ 10 parts of sodium alkyl sulfonate, chlorine fluorine first
It is 2 ~ 7 parts of alkane, 3 ~ 11 parts of diethylaluminum chloride, 1 ~ 3 part of acrylonitrile-butadiene-styrene copolymer, 3 ~ 9 parts of silane coupler, anti-
2.5 ~ 4.5 parts of oxygen agent, 0.5 ~ 6.5 part of preservative, 1.5 ~ 3.5 parts of lubricant.
2. a kind of anti-corrosion pipe material of supply equipment according to claim 1, it is characterised in that polyvinyl resin
3 parts, 5 parts of nano particle, 5 parts of carbon black, 2 parts of rilanit special, 2 parts of sodium alkyl sulfonate, 2 parts of chlorofluoromethane, diethylaluminum chloride 3
Part, 1 part of acrylonitrile-butadiene-styrene copolymer, 3 parts of silane coupler, 2.5 parts of antioxidant, 0.5 part of preservative, lubricant
1.5 part.
3. a kind of anti-corrosion pipe material of supply equipment according to claim 1, it is characterised in that the nanometer
Grain is nanometer titanium dioxide and one kind or their compositions in nanometer magnesium sulfate.
4. the anti-corrosion pipe material of a kind of supply equipment according to claim 1, it is characterised in that the silane is even
Join agent and be selected from gamma-amino propyl trimethoxy silicane, γ aminopropyltriethoxy silane, γ-expoxy propane base propyl group front three
Oxosilane, γ-expoxy propane base propyl-triethoxysilicane, N- (beta-aminoethyl)-gamma-amino hydroxypropyl methyl diethoxy silicon
Alkane, N- (beta-aminoethyl)-gamma-amino propyl trimethoxy silicane, N- (beta-aminoethyl)-gamma-amino propyl triethoxy
One of which in silane, γ-expoxy propane base hydroxypropyl methyl diethoxy silane and its combination with one another.
5. a kind of anti-corrosion pipe material of supply equipment according to claim 1, it is characterised in that the preservative
A kind of or their mixture in potassium sorbate, sodium benzoate, dimethylbenzene or methyl hydroxybenzoate.
6. the preparation method of the anti-corrosion pipe material of a kind of supply equipment, it is characterised in that mainly include the following steps that：
Step 1：Water is placed in reactor and heated, when water temperature reaches 200 DEG C, polyvinyl resin, nano particle, charcoal is added
Black, rilanit special is stirred, and stir speed (S.S.) is 60 ~ 80r/min, until completely dissolved, stops heating, while adding alkyl
Sodium sulfonate, chlorofluoromethane, diethylaluminum chloride stir 5 ~ 15min, add acrylonitrile-butadiene-styrene copolymer, silane
After coupling agent, 5 ~ 20min of stirring, after obtaining mixed material after natural cooling；
Step 2：Antioxidant, preservative, lubricant are placed in mixer, at normal temperatures under the conditions of be stirred mixing, stir
Speed is 80 ~ 150r/min, and stir speed (S.S.) is 70 ~ 90r/min, and 1 ~ 2h of natural froth breaking is placed in froth breaking pond after the completion of stirring；
Step 3：The material obtained in the mixed material and step 2 that are obtained in step 1 is placed in mixer by stirring mixing,
Stir speed (S.S.) is 80 ~ 150 turns/min, obtains slurry, and obtained slurry finally is placed in into the shaping of vacuum mold forming machine, dried,
Anti-corrosion pipe material is can obtain after the demoulding.
7. a kind of preparation method of the anti-corrosion pipe material of supply equipment according to claim 6, it is characterised in that
The vacuum in vacuum mold forming machine in the step 3 is 0.02 ~ 0.06MPa.
8. a kind of preparation method of the anti-corrosion pipe material of supply equipment according to claim 6, it is characterised in that
Silica is added in froth breaking pond or organosilicon polymer is used as defoamer in the step 2.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710566175.2A CN107286428A (en) | 2017-07-12 | 2017-07-12 | A kind of anti-corrosion pipe material of supply equipment and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710566175.2A CN107286428A (en) | 2017-07-12 | 2017-07-12 | A kind of anti-corrosion pipe material of supply equipment and preparation method thereof |
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| CN107286428A true CN107286428A (en) | 2017-10-24 |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105837894A (en) * | 2016-04-14 | 2016-08-10 | 叶青 | Low-temperature-resistant corrosion-resistant polyethylene pipe |
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2017
- 2017-07-12 CN CN201710566175.2A patent/CN107286428A/en not_active Withdrawn
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105837894A (en) * | 2016-04-14 | 2016-08-10 | 叶青 | Low-temperature-resistant corrosion-resistant polyethylene pipe |
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Application publication date: 20171024 |
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