CN108314819B - Anti-aging antibacterial PE water supply pipe - Google Patents
Anti-aging antibacterial PE water supply pipe Download PDFInfo
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- CN108314819B CN108314819B CN201810057111.4A CN201810057111A CN108314819B CN 108314819 B CN108314819 B CN 108314819B CN 201810057111 A CN201810057111 A CN 201810057111A CN 108314819 B CN108314819 B CN 108314819B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 42
- 230000003712 anti-aging effect Effects 0.000 title claims abstract description 20
- 230000000844 anti-bacterial effect Effects 0.000 title claims abstract description 18
- 239000002994 raw material Substances 0.000 claims abstract description 24
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000002245 particle Substances 0.000 claims abstract description 15
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- 239000004698 Polyethylene Substances 0.000 claims description 41
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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
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/022—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the choice of material
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- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
- B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
- B29C48/21—Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their surfaces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
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- B32B1/08—Tubular products
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
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- C—CHEMISTRY; METALLURGY
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- 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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/12—Rigid pipes of plastics with or without reinforcement
- F16L9/121—Rigid pipes of plastics with or without reinforcement with three layers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2023/00—Tubular articles
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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
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- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
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- C—CHEMISTRY; METALLURGY
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C08K2201/011—Nanostructured additives
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- 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
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- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
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- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The invention relates to an anti-aging antibacterial PE water supply pipe which comprises an inner layer, a middle layer and an outer layer which are sequentially arranged from inside to outside, wherein the inner layer, the middle layer and the outer layer are formed by three-layer co-extrusion, and the inner layer comprises the following raw material components in parts by weight: 50-150 parts of PE particles; 1-10 parts of a dispersing agent; 1-10 parts of first color master batch and 1-20 parts of nano zinc oxide, wherein the middle layer comprises the following raw material components in parts by weight: 50-150 parts of PE particles; 1-10 parts of a second masterbatch; the outer layer comprises the following raw material components in parts by weight: 50-150 parts of PE particles; 0.5-10 parts of hindered amine free radical scavenger; 1-10 parts of a third masterbatch; 1-10 parts of a dispersing agent. The sample can ensure the full mixing and uniformity of the raw material components in each layer, so that the pipe can be directly exposed to sunlight for 2 years without changing color and whitening appearance.
Description
Technical Field
The invention belongs to the field of pipelines, relates to a water supply pipe, and particularly relates to an anti-aging antibacterial PE water supply pipe.
Background
Since the application of plastic pipes such as HDPE in the last century, the performance is continuously improved after decades of development. The HDPE water supply pipe has the advantages of good sanitary performance, excellent corrosion resistance, long service life, high resistance to corrosion of various chemicals except a small amount of strong oxidant due to the inert material, low energy consumption in life, low water flow resistance, light weight, simplicity and rapidness in installation, long service life, low manufacturing cost, heat insulation performance and the like compared with other water supply pipes, and can be rapidly developed in municipal pipe network construction.
Water supply pipes in China also go through the stages of single quality, low sanitary standard and slow development. At present, the pipe is various in variety, the sanitary standard is improved quickly, the updating and development are rapid, the quality requirement on the pipe is more and more strict in recent years in China, and the development of the pipe and the fitting technology is very important. A great deal of effort and money is invested in research. Over the years of research, researchers have found that there are currently: 1. the secondary pollution of the pipeline material to the water quality in the pipeline is seriously influenced; 2. the pipe network construction is not standard, so that the service life of the pipe network is shortened, and the pipe explosion phenomenon often occurs; 3. the whole service life of the pipe network is short, and the aging is accelerated.
At present, water supply pipes on the market mainly comprise metal pipes and nonmetal pipes, wherein HDPE water supply pipes are represented, and the HDPE water supply pipes quickly occupy the market due to the advantages of light weight, smooth inner and outer walls, corrosion resistance, good sealing property and the like. After PE pipe networks are excavated for years, even if the inner walls of plastic pipes are smoother than those of metal pipes and the self-purification energy is good, a large amount of biological mud and microorganisms are still found to be deposited on the inner walls of the plastic pipes, so that secondary pollution is generated on the water quality in the pipes, and the drinking water quality of people is influenced. When the PE plastic is used and stored outdoors, the pipe is inevitably aged due to climatic factors such as illumination, wind, rain and the like, and the use value of the PE plastic is lost. The pipe is subjected to a plurality of units of processing, purchasing and construction from processing to soil covering, the storage environment is complex, and the conditions of covering, storing, carrying, avoiding direct sunlight and the like specified by the state are difficult to meet. The long-term tracking of our company discovers that the outer wall of the PE water supply pipe begins to change color after the PE water supply pipe is stored outdoors for 1 year, and the performance of physical property detection after 2 years is reduced by 10-20%, so that the service life of the PE water supply pipe is greatly shortened.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide an anti-aging antibacterial PE water supply pipe.
In order to achieve the purpose, the invention adopts the technical scheme that: the utility model provides an antibiotic PE feed pipe of anti-aging, it includes inlayer, middle level and the skin that sets gradually from inside to outside, inlayer, middle level and skin are formed through the three-layer is crowded altogether, the inlayer includes the following weight of parts's raw materials component:
the middle layer comprises the following raw material components in parts by weight:
50-150 parts of PE particles;
1-10 parts of a second color master batch;
the outer layer comprises the following raw material components in parts by weight:
50-150 parts of PE particles;
0.5-10 parts of hindered amine free radical scavenger;
1-10 parts of a third color master batch;
1-10 parts of a dispersing agent;
the hindered amine free radical trapping agent is a mixture of Hals622 and Hals944 according to a mass ratio of 5: 1-1: 5, and the dispersing agent is PE wax;
the outer layer and the inner layer are mutually independent and adopt the following steps to mix raw materials: adding the raw material components into a stirring pot, stirring and mixing for 10-15 min on a high-speed mixer at the speed of 600-2000 r/min, and controlling the mixing temperature to be 50-80 ℃.
Optimally, the temperature of the three-layer co-extrusion is 65-85 ℃ in the solid conveying section, 200-210 ℃ in the melting zone, 210-230 ℃ in the homogenizing section and 200-220 ℃ in the concentric flow zone.
Optimally, the thicknesses of the outer layer and the inner layer are independent of each other and are 0.1-0.2 mm.
Optimally, the average size of the nano zinc oxide is 20-60 nm.
Optimally, the PE particles are high-density polyethylene and are dried at 80-100 ℃ before use.
Compared with the prior art, the anti-aging antibacterial PE water supply pipe has the advantages that the raw material containing nano zinc oxide is used as the inner layer, the free radical scavenger mixed with Hals622 and Hals944 is used as the outer layer, stirring and mixing are carried out at a specific rotating speed and at a specific temperature, so that sufficient mixing and uniformity of raw material components in each layer can be guaranteed, the effects of reducing the using amount of the anti-aging auxiliary agent and the antibacterial auxiliary agent are achieved, the outer layer is protected, the pipe can be directly exposed under sunlight for 2 years, the appearance is not changed and whitened, the color difference L ab dE is not more than 1.5, the requirements of GB/T13663-2000 are met, compared with the traditional pipe network water body, the anti-aging rate of the inner wall is 99.99%, the deposition amount of biological mud and the breeding amount of algae are reduced by at least 50%, and the energy consumption of water supply is reduced.
Drawings
FIG. 1 is a schematic structural view of an anti-aging antibacterial PE water supply pipe of the invention.
Detailed Description
The anti-aging antibacterial PE water supply pipe shown in figure 1 comprises an inner layer 3, a middle layer 2 and an outer layer 1 which are sequentially arranged from inside to outside, wherein the inner layer 3, the middle layer 2 and the outer layer 1 are formed by three-layer co-extrusion, and the inner layer 3 comprises the following raw material components in parts by weight: 50-150 parts of PE particles; 1-10 parts of a dispersing agent; 1-10 parts of first color master batch and 1-20 parts of nano zinc oxide, wherein the middle layer 2 comprises the following raw material components in parts by weight: 50-150 parts of PE particles; 1-10 parts of a second masterbatch; the outer layer 1 comprises the following raw material components in parts by weight: 50-150 parts of PE particles; 0.5-10 parts of hindered amine free radical scavenger; 1-10 parts of a third masterbatch; 1-10 parts of a dispersing agent; the hindered amine free radical trapping agent is a mixture of Hals622 and Hals944 according to a mass ratio of 5: 1-1: 5, and the dispersing agent is PE wax; the outer layer 1 and the inner layer 3 are mutually independent and adopt the following steps to mix raw materials: adding the raw material components into a stirring pot, stirring and mixing for 10-15 min on a high-speed mixer at the speed of 600-2000 r/min, and controlling the mixing temperature to be 50-80 ℃.
The temperature control of the anti-aging antibacterial PE water supply pipe in the three-layer co-extrusion molding equipment is as follows: the solid conveying section is 65-85 ℃, the melting zone is 200-210 ℃, the homogenizing section is 210-230 ℃ and the concentric flow zone is 200-220 ℃, so that the physical and chemical properties of the anti-aging antibacterial PE water supply pipe can be ensured. The thickness of the outer layer 1 and the thickness of the inner layer 3 are independent of each other and are 0.1-0.2 mm, the performance requirements of pipeline antibiosis and anti-aging are met, and cost can be saved. The smaller the size of the nano zinc oxide is, the larger the surface area of the nano zinc oxide is, the better the size effect is, but the higher the price is; the comprehensive performance cost performance is selected to be 20-60 nm. The PE particles are high-density polyethylene and are dried at the temperature of 80-100 ℃ before use. The first color master, the second color master and the third color master are independent of each other and can be selected conventionally according to specific required colors.
The present invention will be further illustrated with reference to the following examples.
Examples 1 to 3 and comparative examples 1 to 3
Examples 1 to 3 each provide an anti-aging antibacterial PE water supply pipe, the structures of which are shown in fig. 1, and which includes an inner layer 3, a middle layer 2, and an outer layer 1, which are sequentially disposed from inside to outside, the inner layer 3, the middle layer 2, and the outer layer 1 are formed by three-layer co-extrusion, and the raw material components of each layer are shown in table 1. Comparative examples 1 to 3 each provide a PE water supply pipe; wherein, the inner layer of the comparative example 1 does not contain nano zinc oxide, the outer layer of the comparative example 2 does not contain hindered amine radical scavenger, and the hindered amine radical scavenger contained in the outer layer of the comparative example 3 is not a mixture of Hals622 and Hals944 but a light stabilizer 770.
TABLE 1 raw material formulation of anti-aging antibacterial PE water supply pipe in examples 1-3
Note: the PE particles are medium petroleum YGH041, the dispersing agent is PE wax, the first color master batch, the second color master batch and the third color master batch are blue (boiling), and the size (usually, the length) of the nano zinc oxide is 20-60 nm; the trapping agent (namely the hindered amine radical trapping agent) is a mixture of Hals622 and Hals944 according to a mass ratio of 5: 1-1: 5, wherein the mass ratio of Hals622 and Hals944 in example 1 is 5:1, the mass ratio of Hals622 and Hals944 in example 2 is 1:1, and the mass ratio of Hals622 and Hals944 in example 2 is 1: 5.
The specific preparation steps of the PE water supply pipe are as follows: adding the raw material components into a stirring pot, stirring and mixing for 10-15 min on a high-speed mixer at the speed of 600-2000 r/min, and controlling the stirring and mixing temperature to be 50-80 ℃; then respectively sending the mixture into different discharge hoppers of co-extrusion molding equipment to carry out three-layer co-extrusion molding: the solid conveying section is 65-85 ℃, the melting zone is 200-210 ℃, the homogenizing section is 210-230 ℃ and the concentric flow zone is 200-220 ℃.
After the water supply pipes in the examples are exposed to sunlight for 2 years, the colors of the water supply pipes are observed and the color difference is tested (the color difference is detected and analyzed by a color difference meter), the water pipes of the examples 1-3 and the comparative example 1 are not discolored, whitened and yellowed, and the color difference L ab dE is not more than 1.5, the water pipes of the comparative examples 1-3 and the comparative example 3 are not discolored, whitened and yellowed, and the color difference L ab dE is more than 1.5 after the pipes are stored outdoors without covering for two years, the physical properties of the water pipes of the examples 1-3 and the comparative example 1 meet the requirements of GB/T63-2000, namely the water pipes are not less than 20 ℃, 100h, 12.4MPa, 80 ℃, 165h, 5.5MPa, 80 ℃, 2000h, 5.0MPa do not crack, the hydrostatic strength of no leakage, the elongation at break meets the retention rate of 90% and not less than 350% after energy aging, the longitudinal shrinkage rate is not less than 3, the retention rate of 3% and not less than 80%, the retention rate of the oxidation period is not less than 20min and not less than 20min, the elongation rate of the water pipes of the national standard 11, the tensile strength of the tensile test pipes of the tensile test box is not less than 90%, the tensile test box, the tensile test sample of the tensile test sample, the tensile test sample of the tensile test box is not less than 54, the tensile test box is not less than 54, the tensile test box is not less than 822、2.5GJ/m2、3.5GJ/m2And (4) comparing the physical and chemical properties after energy aging, calculating the performance retention rate and analyzing).
The antibacterial performance is detected by entrusting a health inspection center, simultaneously connecting the pipelines prepared by different embodiments of the invention and commercially available common products into a company circulating water pipeline, and taking out the pipelines and the commercially available common products to compare the biological mud deposition condition after running for 1 year; the antibacterial rates of the inner walls of the pipelines in the embodiments 1 to 3 reach 99%, 99.5% and 99.99% respectively, and compared with the traditional pipe network water body, the water body conveying energy consumption is low, and the biological sludge deposition amount and the algae breeding amount are reduced by at least 50%.
The above embodiments are merely illustrative of the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the content of the present invention and implement the invention, and not to limit the scope of the invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the scope of the present invention.
Claims (4)
1. The utility model provides an antibiotic PE feed pipe of anti-aging, it includes inlayer (3), middle level (2) and outer (1) that set gradually from inside to outside, inlayer (3), middle level (2) and outer (1) are through the three-layer formation of crowded altogether, its characterized in that:
the inner layer (3) comprises the following raw material components in parts by weight:
50-150 parts of PE particles;
1-10 parts of a dispersing agent;
1-10 parts of first color masterbatch
1-20 parts of nano zinc oxide,
the average size of the nano zinc oxide is 20-60 nm,
the middle layer (2) comprises the following raw material components in parts by weight:
50-150 parts of PE particles;
1-10 parts of a second color master batch;
the outer layer (1) comprises the following raw material components in parts by weight:
50-150 parts of PE particles;
0.5-10 parts of hindered amine free radical scavenger;
1-10 parts of a third color master batch;
1-10 parts of a dispersing agent;
the hindered amine free radical trapping agent is a mixture of Hals622 and Hals944 according to a mass ratio of 5: 1-1: 5, and the dispersing agent is PE wax; the PE particles are PE 100-grade high-density polyethylene, and are dried at 80-100 ℃ before use;
the outer layer (1) and the inner layer (3) are mutually independent and adopt the following steps to mix raw materials: adding the raw material components into a stirring pot, stirring and mixing for 10-15 min on a high-speed mixer at the speed of 600-2000 r/min, and controlling the mixing temperature to be 50-80 ℃.
2. The anti-aging antibacterial PE water supply pipe according to claim 1, characterized in that: the temperature of the three-layer co-extrusion is 65-85 ℃ of the solid conveying section, 200-210 ℃ of the melting zone, 210-230 ℃ of the homogenizing section and 200-220 ℃ of the concentric flow zone.
3. The anti-aging antibacterial PE water supply pipe according to claim 1, characterized in that: the thickness of the outer layer (1) and the thickness of the inner layer (3) are independent of each other and are 0.1-0.2 mm.
4. The anti-aging antibacterial PE water supply pipe according to claim 1, characterized in that: the melting range of the PE wax is 60-80 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810057111.4A CN108314819B (en) | 2018-01-22 | 2018-01-22 | Anti-aging antibacterial PE water supply pipe |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3964357A1 (en) * | 2020-09-02 | 2022-03-09 | Rifeng Enterprise Group Co., Ltd. | Cross-linked polyethylene type a (pex-a) pipe |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109027440A (en) * | 2018-09-13 | 2018-12-18 | 贵州省源单新材料科技有限公司 | A kind of multi-layer co-extruded nano-polyethylene tubing |
| CN109677069B (en) * | 2018-12-20 | 2021-03-26 | 中核同辐（长春）辐射技术有限公司 | Multilayer composite high-thermal-conductivity irradiation crosslinked floor heating pipe and preparation method thereof |
| CN110105650B (en) * | 2019-05-13 | 2022-10-18 | 杭州联通管业有限公司 | Polyethylene solid-wall permeation tube for rainwater collection and preparation method thereof |
| CN111925593A (en) * | 2020-08-04 | 2020-11-13 | 日丰企业集团有限公司 | Antibacterial pipe and preparation method thereof |
| CN113306218A (en) * | 2021-05-27 | 2021-08-27 | 四川森普管材股份有限公司 | Double-layer antibacterial tube and preparation method thereof |
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| JP2016205440A (en) * | 2015-04-16 | 2016-12-08 | 日立Ｇｅニュークリア・エナジー株式会社 | Pipeline for transporting fluid containing radioactive material, and fluid transportation device for nuclear power facility including the same |
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| CN1098306C (en) * | 1999-09-24 | 2003-01-08 | 中国科学院化学研究所 | High-density polyethylene composition and its pipe material |
| CN102107511B (en) * | 2010-12-21 | 2012-11-28 | 河南康泰塑业科技有限公司 | Method for producing temperature-resisting, anti-seismic and antibacterial compound polyethylene water supply pipe |
| CN102434726B (en) * | 2011-08-31 | 2014-03-12 | 佛山佛塑科技集团股份有限公司 | Water supply pipe material and preparation method thereof |
| CN102359667A (en) * | 2011-09-23 | 2012-02-22 | 贵州金力塑胶有限公司 | Polyethylene antibiosis three-layer composite pipe |
| CN103554624B (en) * | 2013-11-04 | 2016-04-13 | 中国石油化工股份有限公司 | The preparation method of antibacterial polyvinyl resin |
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| JP2016205440A (en) * | 2015-04-16 | 2016-12-08 | 日立Ｇｅニュークリア・エナジー株式会社 | Pipeline for transporting fluid containing radioactive material, and fluid transportation device for nuclear power facility including the same |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3964357A1 (en) * | 2020-09-02 | 2022-03-09 | Rifeng Enterprise Group Co., Ltd. | Cross-linked polyethylene type a (pex-a) pipe |
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