CN112341712A - Copper-carbon antibacterial water delivery pipe, microbead copper-carbon antibacterial water delivery pipe and preparation method thereof - Google Patents
Copper-carbon antibacterial water delivery pipe, microbead copper-carbon antibacterial water delivery pipe and preparation method thereof Download PDFInfo
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- CN112341712A CN112341712A CN201910735827.XA CN201910735827A CN112341712A CN 112341712 A CN112341712 A CN 112341712A CN 201910735827 A CN201910735827 A CN 201910735827A CN 112341712 A CN112341712 A CN 112341712A
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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
- C08K9/00—Use of pretreated ingredients
- C08K9/12—Adsorbed ingredients, e.g. ingredients on carriers
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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
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
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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
-
- 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
- C08K3/04—Carbon
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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
- C08K3/02—Elements
- C08K3/08—Metals
-
- 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
- C08K7/00—Use of ingredients characterised by shape
- C08K7/22—Expanded, porous or hollow particles
- C08K7/24—Expanded, porous or hollow particles inorganic
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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
- F16L9/14—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups
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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
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/085—Copper
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/18—Applications used for pipes
Abstract
The invention discloses a copper-carbon antibacterial water delivery pipe, a microbead copper-carbon antibacterial water delivery pipe and a preparation method thereof in the related technical field of water delivery pipelines; the copper-carbon antibacterial water delivery pipe comprises a copper-carbon antibacterial PPR material; the copper-carbon antibacterial PPR material comprises the following components in percentage by weight: 3% -15% of copper-carbon TM material, and the balance of PPR material; copper ions are used for inhibiting various harmful bacteria, viruses and microorganisms in water, such as algae, and simultaneously, the human body is prevented from being damaged by the silver ions.
Description
Technical Field
The invention relates to the related technical field of water delivery pipelines, in particular to a copper-carbon antibacterial water delivery pipe, a microbead copper-carbon antibacterial water delivery pipe and a preparation method thereof.
Background
At present, silver ions are mostly adopted as antibacterial materials to fill in water pipelines in the market, but the silver ions are continuously separated out, and permeate water enters the human body, if the silver ions are absorbed too much, certain damage is caused to human viscera, so that the adoption of the silver ions as antibacterial raw materials is forbidden in the United states at present.
Copper ions are the most representative metal with bactericidal effect, and scientific experimental results show that the copper ions have the effect of inhibiting the growth of various harmful bacteria, viruses and microorganisms in water, such as algae. Compared with the copper nanoparticle material sold in the market, the copper nanoparticle with the copper/carbon-core/shell structure is a novel nanoparticle material prepared by taking plant fiber as a base material and metallic copper ions as raw materials through a heating carbonization reduction method. The copper/carbon-core/shell nano-particle material exists in a form that nano-copper particles are uniformly embedded in a porous carbon black matrix, so that the advantages of the nano-particle material can be fully exerted, and the defect that the nano-particle material is difficult to control due to too small size can be avoided; the copper-based alloy is not dissolved after being soaked in an aqueous solution with the pH value of 1-11 for a long time, and no obvious copper ions are exuded in the solution. Effectively inhibit the bacteria from attaching and breeding on the surface, can prevent the growth of salmonella and campylobacter strains, and reduce the incidence of microbial food poisoning.
Disclosure of Invention
Aiming at the problem that silver ions can kill microorganisms attached to the pipe wall and cause damage to human bodies in the prior art, the invention aims to provide a copper-carbon antibacterial water delivery pipe, a microbead copper-carbon antibacterial water delivery pipe and a preparation method thereof.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a copper-carbon antibacterial water delivery pipe comprises a copper-carbon antibacterial PPR material; the copper-carbon antibacterial PPR material comprises the following components in percentage by weight: 3 to 15 percent of copper-carbon TM material, and the balance of PPR material.
Preferably, the copper-carbon (TM) material accounts for 5% by weight, and the balance is the PPR material.
Further, the copper-carbon (TM) material comprises nanoparticles and porous carbon black; the nano particles are of a copper/carbon-core/shell structure of 10-99 nanometers and are uniformly embedded in the porous carbon black.
A preparation method of a copper-carbon antibacterial water delivery pipe comprises the following raw materials: 3-15% of copper-carbon TM material and the balance of PPR material; or the weight of the copper-carbon TM material is 5%, and the balance is a PPR material; the materials in the mixture ratio are extruded by an extruder at the temperature of 180-250 ℃, cooled and cut to prepare the copper-carbon antibacterial water delivery pipe.
The micro-bead copper-carbon antibacterial water delivery pipe comprises the following closely-attached ring layers in percentage by weight: 15-25% of a copper-carbon antibacterial PPR material according to claim 1 or 2 and 55-65% of a shading microbead PPR material, the balance being the PPR material; the copper-carbon antibacterial PPR material is located the inner circle layer, the shading microbead PPR material is located the middle circle layer, and the PPR material is located the outer circle layer. The intimate contact as used herein refers to the state in which the three layers are formed by coextrusion or bonding without gaps so that the three layers cannot be separated without destroying the basic structure.
Preferably, the copper-carbon antibacterial PPR material is 20% in percentage by weight; the light shading microbead PPR material accounts for 60%, and the balance is the PPR material.
Further, the shading microbead PPR material comprises the following components in percentage by weight: 55 to 65 percent of shading micro-beads, and the balance being PPR material.
Preferably, the shading microbeads account for 60% by weight, and the balance is the PPR material.
Further, the preparation process of the shading microbead PPR material is to prepare the shading microbead PPR material at 180-250 ℃.
A preparation method of a microbead copper-carbon antibacterial water delivery pipe comprises the following steps:
step 1) a mixture of a PPR material and a copper-carbon TM material, wherein the copper-carbon TM material accounts for 3% -15% or 5% of the total weight; a mixture of light-shielding microbeads and a PPR material, wherein the light-shielding microbeads account for 55-65% or 60% of the total weight; a pure PPR material; the light shading microbead PPR material, the light shading microbead PPR material and the PPR material are prepared from the three materials according to the proportion respectively at 180-250 ℃, and the heating condition does not comprise the preparation steps of extruding through an extruder and cooling and cutting;
and 2) using the copper-carbon antibacterial PPR material, the shading microbead PPR material and the PPR material in the step 1, adding 15-25% of the copper-carbon antibacterial PPR material and 55-65% of the shading microbead PPR material in percentage by weight, and adding the PPR material to the balance, or adding 20% of the copper-carbon antibacterial PPR material and 60% of the shading microbead PPR material in percentage by weight, and adding the PPR material to the balance, and performing one-time co-extrusion by using a three-layer co-extrusion composite die head at the temperature of 180-250 ℃ to prepare the microbead copper-carbon antibacterial water delivery pipe.
The invention has the following advantages:
1. the copper-carbon TM material utilizes copper ions generated by copper under the condition of water, the copper ions penetrate through cell membranes and reach the interior of cells, and because the copper ions are heavy metal ions, certain enzymes can be denatured, so that the metabolism of the enzymes is damaged, and microorganisms attached to the inner wall of a water pipeline are killed;
2. the concentration of copper ions released into the water body is very low, so that the harm of heavy metal ions to the human body is avoided, and the harm of silver ion sterilization to the human body is lower.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of the present invention.
In the figure: 1-a copper-carbon antibacterial PPR layer; 2-a light-blocking microbead PPR layer; 3-PPR layer.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
It should be noted that in the description of the present invention, the terms "inside", "middle", "outside", etc. indicate the orientation or positional relationship based on the schematic diagram shown in fig. 1, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
As shown in fig. 1, the copper-carbon antibacterial water pipe provided by the invention comprises a copper-carbon antibacterial PPR layer 1; a light-shielding microbead PPR layer 2; a PPR layer 3.
First, the raw materials used in the examples of the present invention were as follows:
the copper-carbon TM material is a novel nano composite material formed by uniformly embedding copper/carbon-core/shell structure nano particles with the size of tens of nanometers in porous carbon black;
the shading micro-beads are silicon-aluminum hollow micro-beads, 1250 meshes of Anhui Wanxing industry Co., Ltd;
the PPR raw material was random copolymer polypropylene, Xiaoxing, Korea, r200 p.
It should be noted that the reagent examples are only used to assist the skilled person in the experimental scheme, and are not recommended reagents, and do not set any limit to the scheme of the present invention. In actual practice, the technical scheme can be tested by combining self experience of the technical personnel.
Examples A1 to A8: preparation of copper-carbon antibacterial water delivery pipe
Example A1
Feeding a mixture of a PPR material and a copper-carbon (TM) material (hereinafter referred to as copper-carbon PPR mixture) from a feed inlet of PPR pipe production equipment, wherein the copper-carbon (TM) material accounts for 3% of the total weight; a motor on the equipment drives an extruder to melt and extrude the copper-carbon PPR mixture heated to 180 ℃ to prepare the copper-carbon antibacterial water delivery pipe; cooling the pipe to 30 ℃ through a cooling water tank and shaping; the tube is cut to a desired length by a cutter.
Example A2
The copper-carbon TM material in the copper-carbon PPR mixture accounts for 5% of the total weight; the remaining conditions were the same as in example A1.
Example A3
The copper-carbon TM material in the copper-carbon PPR mixture accounts for 10% of the total weight; the remaining conditions were the same as in example A1.
Example A4
The copper-carbon TM material in the copper-carbon PPR mixture accounts for 15% of the total weight; the remaining conditions were the same as in example A1.
Example A5
The heating temperature of the copper-carbon PPR mixture is 200 ℃; the remaining conditions were the same as in example A1.
Example A6
The heating temperature of the copper-carbon PPR mixture is 230 ℃; the remaining conditions were the same as in example A2.
Example A7
The heating temperature of the copper-carbon PPR mixture is 250 ℃; the remaining conditions were the same as in example A3.
Example A8
The pipe temperature is reduced to 40 ℃ by the cooling water tank for shaping; the remaining conditions were the same as in example A4.
The copper-carbon antibacterial water delivery pipe utilizes an ion exchange principle, copper ions are contacted with bacteria with negative charges, nutrients and oxygen of the bacteria are deprived, cell membranes are damaged, charge imbalance in cells is caused, the bacteria are killed, and damage to a human body caused by silver ion sterilization is avoided.
For examples a 1-A8, the Minimum Inhibitory Concentration (MIC) and Minimum Bactericidal Concentration (MBC) of the copper-carbon TM material against two bacteria were experimentally determined, and the results indicated: MIC and MBC of the copper-carbon TM material to escherichia coli are 900ppm and 1000ppm respectively; the MIC and MBC for Staphylococcus aureus are 600ppm and 700ppm respectively; however, the concentration of the dissolved copper in the water of the copper-carbon antibacterial water delivery pipe is less than 5ppm, so that the copper-carbon antibacterial water delivery pipe can absorb the copper in a normal range for a human body, and the damage of silver ions to the human body is avoided while the microorganisms attached to the pipe wall are killed.
Examples B1 to B11: preparation of micro-bead copper-carbon antibacterial water delivery pipe
Example B1
Step 1) adding a copper-carbon PPR mixture with any proportion in the embodiments A1-A4 from the first feeding port of three feeding ports on three-layer co-extrusion PPR pipe production equipment; a mixture of the shading microbeads and the PPR material (hereinafter referred to as shading microbead PPR mixture) is fed from a second feeding port, wherein the shading microbead material accounts for 55% of the total weight; adding PPR material from a third feed port; the raw materials in the three feeding ports are respectively heated to 180 ℃ to be melted and then extruded out to respectively prepare a copper-carbon antibacterial PPR material, a shading microbead PPR material and a PPR material; it should be noted that in this step, the charging openings are called as "first", "second", and "third" in parallel, and there is no order or importance ordering meaning, and it is only an expression for distinguishing the three charging openings, and does not form a limitation to this scheme;
step 2) using the copper-carbon antibacterial PPR material, the shading microbead PPR material and the PPR material in the step 1, wherein the copper-carbon antibacterial PPR material accounts for 15% by weight, the shading microbead PPR material accounts for 55% by weight, and the balance is complemented by the PPR material; under the condition of 180 ℃, the micro-bead copper-carbon antibacterial water delivery pipe is prepared by one-time co-extrusion through a three-layer co-extrusion composite die; cooling the pipe to 30 ℃ through a cooling water tank and shaping; the tube is cut to a desired length by a cutter.
Example B2
The light-shading microbead material in the light-shading microbead PPR mixture accounts for 60% of the total weight; the remaining conditions were the same as in example B1.
Example B3
The light-shading microbead material in the light-shading microbead PPR mixture accounts for 65% of the total weight; the remaining conditions were the same as in example B1.
Example B4
The heating temperature in the step 1 and the step 2 is 200 ℃; the remaining conditions were the same as in example B1.
Example B5
The heating temperature in the step 1 and the step 2 is 230 ℃; the remaining conditions were the same as in example B2.
Example B6
The heating temperature in the step 1 and the step 2 is 250 ℃; the remaining conditions were the same as in example B3.
Example B7
According to the weight percentage, the copper-carbon antibacterial PPR material accounts for 20 percent, the shading microbead PPR material accounts for 55 percent, and the balance is complemented by the PPR material; the remaining conditions were the same as in example B5.
Example B8
According to the weight percentage, the copper-carbon antibacterial PPR material accounts for 25%, the shading microbead PPR material accounts for 55%, and the balance is complemented by the PPR material; the remaining conditions were the same as in example B6.
Example B9
According to the weight percentage, the copper-carbon antibacterial PPR material accounts for 20 percent, the shading microbead PPR material accounts for 60 percent, and the balance is complemented by the PPR material; the remaining conditions were the same as in example B5.
Example B10
According to the weight percentage, the copper-carbon antibacterial PPR material accounts for 25%, the shading microbead PPR material accounts for 65%, and the balance is complemented by the PPR material; the remaining conditions were the same as in example B6.
Example B11
The pipe temperature is reduced to 40 ℃ by the cooling water tank for shaping; the remaining conditions were the same as in example B1.
In the above examples a1 to A8 and examples B1 to B11, the parameters and conditions can be arbitrarily combined as long as they are not contradictory to each other.
The silicon-aluminum hollow microspheres in the copper-carbon antibacterial water delivery pipe are hollow materials and are of a spherical structure, a large reflecting surface can be formed on the surface, light cannot penetrate easily, a light shielding layer is further formed, light is prevented from entering the pipe, and the growth and reproduction of algae in water in the pipe are further inhibited on the basis of the sterilization and bacteriostasis effects of the embodiment A1-A8.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in the embodiments without departing from the principles and spirit of the invention, and these embodiments are within the scope of the invention.
Claims (9)
1. The copper-carbon antibacterial water delivery pipe is characterized in that: comprises a copper-carbon antibacterial PPR material; the copper-carbon antibacterial PPR material comprises the following components in percentage by weight: 3 to 15 percent of copper-carbon TM material, and the balance of PPR material.
2. The copper-carbon antibacterial water delivery pipe material of claim 1, characterized in that: the copper-carbon TM material accounts for 5% by weight, and the balance is the PPR material.
3. The copper-carbon antibacterial water delivery pipe material according to claim 1 or 2, characterized in that: the copper-carbon (TM) material comprises nano-particles and porous carbon black; the nano particles are of a copper/carbon-core/shell structure of 10-99 nanometers and are uniformly embedded in the porous carbon black.
4. A method for preparing the copper-carbon antibacterial water delivery pipe material as claimed in any one of claims 1 to 3, wherein the method comprises the following steps: the raw material containing the components of claim 1 or 2 is extruded by an extruder at 180-250 ℃, cooled and cut to prepare the copper-carbon antibacterial water delivery pipe.
5. The utility model provides a antibiotic water delivery tubular product of microballon copper carbon which characterized in that: the adhesive comprises the following closely attached ring layers in percentage by weight: 15% -25% of the copper-carbon antibacterial PPR material as defined in any one of claims 1-3, 55% -65% of the shading microbead PPR material, and the balance being the PPR material; the shading microbead PPR material comprises shading microbeads and a PPR material; the copper-carbon antibacterial PPR material is located the inner circle layer, the shading microbead PPR material is located the middle circle layer, and the PPR material is located the outer circle layer.
6. The microbead copper-carbon antibacterial water delivery pipe material according to claim 5, which is characterized in that: according to the weight percentage, the copper-carbon antibacterial PPR material is 20%, the shading microbead PPR material is 60%, and the balance is the PPR material.
7. The micro-bead copper-carbon antibacterial water delivery pipe material according to claim 5 or 6, characterized in that: the shading microbead PPR material comprises the following components in percentage by weight: 55 to 65 percent of shading micro-beads, and the balance being PPR material.
8. The microbead copper-carbon antibacterial water delivery pipe material according to claim 7, which is characterized in that: the shading microbead accounts for 60% by weight, and the balance is PPR material.
9. A method for preparing the microbead copper-carbon antibacterial water delivery pipe material as claimed in any one of claims 5 to 8, which is characterized in that: the method comprises the following steps:
1) mixing the shading microbeads with a PPR material, and preparing the shading microbead PPR material at the temperature of 180-250 ℃;
2) and (2) carrying out one-time co-extrusion on the shading microbead PPR material, the copper-carbon antibacterial PPR material and the PPR material in the step 1 at the temperature of 180-250 ℃ through a three-layer co-extrusion composite die to prepare the microbead copper-carbon antibacterial water delivery pipe.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910735827.XA CN112341712A (en) | 2019-08-09 | 2019-08-09 | Copper-carbon antibacterial water delivery pipe, microbead copper-carbon antibacterial water delivery pipe and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910735827.XA CN112341712A (en) | 2019-08-09 | 2019-08-09 | Copper-carbon antibacterial water delivery pipe, microbead copper-carbon antibacterial water delivery pipe and preparation method thereof |
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| CN112341712A true CN112341712A (en) | 2021-02-09 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202125672U (en) * | 2011-06-28 | 2012-01-25 | 佛山市日丰企业有限公司 | Antibacterial shading Propylene Random copolymer (PPR) pipe |
| CN102499260A (en) * | 2011-10-12 | 2012-06-20 | 西安交通大学 | Application of copper nanomaterial with copper/carbon-core/shell structure in antibiosis |
| CN203023676U (en) * | 2013-01-06 | 2013-06-26 | 甘肃顾地塑胶有限公司 | Novel antibacterial PP-R (polypropylene) pipe |
| CN105131435A (en) * | 2015-09-30 | 2015-12-09 | 浙江伟星新型建材股份有限公司 | High-shading-degree white PPR pipe and preparation method thereof |
| CN108653240A (en) * | 2018-06-22 | 2018-10-16 | 苏州冠洁纳米抗菌涂料科技有限公司 | The application of the composite nanoparticle of carbon and copper |
-
2019
- 2019-08-09 CN CN201910735827.XA patent/CN112341712A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202125672U (en) * | 2011-06-28 | 2012-01-25 | 佛山市日丰企业有限公司 | Antibacterial shading Propylene Random copolymer (PPR) pipe |
| CN102499260A (en) * | 2011-10-12 | 2012-06-20 | 西安交通大学 | Application of copper nanomaterial with copper/carbon-core/shell structure in antibiosis |
| CN203023676U (en) * | 2013-01-06 | 2013-06-26 | 甘肃顾地塑胶有限公司 | Novel antibacterial PP-R (polypropylene) pipe |
| CN105131435A (en) * | 2015-09-30 | 2015-12-09 | 浙江伟星新型建材股份有限公司 | High-shading-degree white PPR pipe and preparation method thereof |
| CN108653240A (en) * | 2018-06-22 | 2018-10-16 | 苏州冠洁纳米抗菌涂料科技有限公司 | The application of the composite nanoparticle of carbon and copper |
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