CN111928020A - A antibiotic water pipe for pure water filling - Google Patents

A antibiotic water pipe for pure water filling Download PDF

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Publication number
CN111928020A
CN111928020A CN202010961943.6A CN202010961943A CN111928020A CN 111928020 A CN111928020 A CN 111928020A CN 202010961943 A CN202010961943 A CN 202010961943A CN 111928020 A CN111928020 A CN 111928020A
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Prior art keywords
antibacterial
pipe
layer
hdpe
coating
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CN202010961943.6A
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Chinese (zh)
Inventor
陈绍山
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Hunan Nanshan Mineral Water Co ltd
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Hunan Nanshan Mineral Water Co ltd
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Priority to CN202010961943.6A priority Critical patent/CN111928020A/en
Publication of CN111928020A publication Critical patent/CN111928020A/en
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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
    • F16L9/133—Rigid pipes of plastics with or without reinforcement the walls consisting of two layers
    • 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
    • B32B1/00—Layered products having a non-planar shape
    • B32B1/08—Tubular products
    • 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
    • B32B27/06—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
    • 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
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • 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
    • 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
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • 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
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • 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
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • 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
    • B32B2255/00—Coating on the layer surface
    • B32B2255/10—Coating on the layer surface on synthetic resin layer or on natural or synthetic rubber layer
    • 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
    • B32B2255/00—Coating on the layer surface
    • B32B2255/26—Polymeric coating
    • 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
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/101—Glass fibres
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/558—Impact strength, toughness
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
    • B32B2307/7145—Rot proof, resistant to bacteria, mildew, mould, fungi
    • 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
    • B32B2597/00—Tubular articles, e.g. hoses, pipes

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)

Abstract

The invention discloses an antibacterial water pipe for filling purified water, which comprises an outer protective pipe and an inner antibacterial pipe, wherein the outer protective pipe is a PE pipe; and an antibacterial coating is formed on the inner surface of the thin-wall pipe body, and the outer-layer HDPE pipe body is a modified HDPE pipe body which is modified by methacrylate, melamine and tetrapod-like zinc oxide whiskers and then added with an antibacterial agent. The invention has the advantages of convenient preparation, stable forming, higher strength and impact resistance, and more stable antibacterial and bacteriostatic effects in the pipe, and is particularly suitable for being used as a water conveying pipeline for filling purified water.

Description

A antibiotic water pipe for pure water filling
Technical Field
The invention relates to the field of composite pipes, in particular to an antibacterial water pipe for filling purified water.
Background
In the prior art, common water pipes are usually PVC pipes, PE pipes, PPR pipes or HDPE pipes, although plastic water pipes of this kind have the advantages of low cost, high strength, strong corrosion resistance, no toxicity, convenient installation and the like, and can meet the requirements of sanitation and health, the antibacterial property is weaker, when the water flow rate of the pipes is slow or long-term use, dirt accumulation easily occurs on the inner wall, the dirt contains a large amount of bacteria such as escherichia coli and staphylococcus aureus, which can directly harm human health, and adverse obstacles exist when the pipes are used as purified water filling pipes, and high-frequency purification and sterilization treatment is needed, so that the cost of purified water production is greatly increased.
Based on the reasons, some antibacterial water pipes based on antibacterial coatings are also available on the market, but the antibacterial effect of the water pipes is realized by coating one layer of antibacterial coating (such as a nano silver coating) on the inner side of a plastic single pipe, although the antibacterial effect can be achieved through the antibacterial coating in the pipe body, the strength of the antibacterial water pipe with a single-layer structure is not large enough, the expansion coefficient is large, deformation and bending are easy to occur, and the antibacterial coating is easily peeled off from the inner wall of the water pipe or cracks are generated after deformation and bending, so that failure is caused.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide an antibacterial water pipe for filling purified water, so as to solve the above disadvantages in the background art.
The technical problem solved by the invention is realized by adopting the following technical scheme:
an antibacterial water pipe for filling purified water comprises a pipe body, wherein the pipe body comprises a protective outer pipe positioned on an outer layer and an antibacterial inner pipe positioned on an inner layer;
the protective outer pipe is a PE pipe; two glass fiber filling layers are formed between the protective outer pipe and the antibacterial inner pipe, the thickness of the glass fiber filling layer on the inner layer is 1-2 mm, glass fibers are coated on the outer surface of the antibacterial inner pipe after being impregnated with unsaturated polyester resin, and the thickness of the glass fiber filling layer on the outer layer is 0.5-1 mm, and the glass fiber filling layer is directly hot-pressed and formed on the surface of the glass fiber filling layer on the inner layer;
the antibacterial inner pipe is a double-layer composite HDPE pipe body, the inner-layer HDPE pipe body is a HDPE thin-wall pipe body with the thickness of 2-5 mm, and an antibacterial coating is formed on the inner surface of the HDPE thin-wall pipe body; the outer-layer HDPE pipe body is a modified HDPE pipe body and comprises a resin material and an antibacterial agent, wherein the resin material comprises 65-70 wt% of HDPE resin, 16-18 wt% of methacrylate, 7-9 wt% of melamine and 3-5 wt% of tetrapod-like zinc oxide whiskers, the antibacterial agent is a mixture of isothiazolinone and miconazole in a mass ratio of 3:1 and 20: 1-10: 1 of nano zinc oxide, and the addition amount of the antibacterial agent is 3-5 wt% of the resin material.
The antibacterial coating is a polyisocyanate coating added with an antibacterial agent, and the coating thickness of the antibacterial coating is 200-300 nm;
the antibacterial agent adopted in the antibacterial coating is a mixture of zirconium phosphate silver-loaded and nano zinc oxide in a mass ratio of 5: 1-7: 1, and the addition amount of the antibacterial agent in the antibacterial coating is 8-30 mg/kg of resin material;
the polyisocyanate employed in the polyisocyanate coating contains at least two NCO groups per molecule.
The diameters of the glass fibers used in the two glass fiber filling layers are 13-15 mu m, and the fiber monofilaments of the glass fibers are 18-25 mm.
By further limitation, 4-7 wt% of a hydrophobic agent is added into the antibacterial coating, and the hydrophobic agent is a nonionic paraffin dispersion.
As a further limitation, the thickness of the protective outer pipe is 70-120% of the sum of the thicknesses of the antibacterial inner pipes.
Has the advantages that: the antibacterial water pipe for filling purified water has stronger structural stability, the inner layer pipe body is formed by the structural combination of the double-layer composite HDPE pipe body, the inner layer is used as a base layer by the HDPE thin-wall pipe body, and the antibacterial agent is coated on the surface of the base layer to form the antibacterial coating, dozens of strains such as bacteria, fungi, molds and the like in a water supply pipeline can be killed, the antibacterial effect on escherichia coli, staphylococcus aureus, candida albicans and the like is obvious, the antibacterial effect is durable, the requirement of people on the antibacterial property of the water supply pipeline in daily life can be met, the HDPE thin-wall pipe body is wrapped by the modified HDPE pipe body on the outer side, the bonding performance of the interface is effectively improved, the outer pipe and the glass fiber are protected to carry out outer side impact resistance reinforcement, the integral strength and stability of the inner pipe are effectively improved, and the inner layer antibacterial coating is not easy to peel, even if the pipe body is partially deformed under the action of the impact force of the cavity, the antibacterial effect can be compensated in a short time by modifying the HDPE pipe body, so that the buffer time is provided for the replacement of the pipeline.
Drawings
FIG. 1 is an enlarged view of the tube wall structure in accordance with the preferred embodiment of the present invention.
Wherein: 1. protecting the outer tube; 2. an outer glass fiber filling layer; 3. an inner glass fiber filling layer; 4. an outer HDPE pipe body; 5. an inner HDPE pipe body; 6. and (4) an antibacterial coating.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained below by combining the specific drawings.
Referring to fig. 1, in the present embodiment, the inner diameter of the body of the antibacterial water pipe is 20cm, and the antibacterial water pipe is a large inner diameter pipe and includes an antibacterial inner pipe disposed at the inner side and a protective outer pipe 1 disposed at the outer side for protecting the antibacterial inner pipe at the inner side; simultaneously, the technical scheme of this embodiment also can be used for preparing the minimum body internal diameter and be 5 cm's little internal diameter body, only need reduce in the antibiotic inner tube the pipe thickness of inlayer HDPE body 5, outer HDPE body 4 and the pipe thickness of protection outer tube 1 can.
In the embodiment, the antibacterial inner pipe comprises an inner-layer HDPE pipe body 5 and an outer-layer HDPE pipe body 4, wherein the inner-layer HDPE pipe body 5 is a HDPE thin-wall pipe body with the wall thickness of 3mm, an antibacterial coating 6 is formed on the inner surface of the inner-layer HDPE pipe body 5, the coating thickness of the antibacterial coating 6 on the inner surface of the inner-layer HDPE pipe body 5 is 300nm, the antibacterial coating 6 is a polyisocyanate coating added with an antibacterial agent, the adopted polyisocyanate resin base material is a polyisocyanate resin containing two NCO groups, the adopted antibacterial agent is a mixture of zirconium phosphate silver-loaded and nano zinc oxide with the mass ratio of 6:1, and the adding amount of the antibacterial agent in the antibacterial coating is 20mg/kg of resin material; in other embodiments, in order to improve the hydrophobic property of the polyisocyanate coating, 4 to 7 wt% of a non-ionic paraffin wax dispersion can be added into the resin material of the polyisocyanate coating as a hydrophobic agent to improve the anti-adhesion property of the polyisocyanate coating.
Outer HDPE body 4 is the modified HDPE body that the wall thickness is 10mm, includes 96 wt% modified HDPE resin material and 4 wt% antibacterial agent in outer HDPE body 4, and wherein, the antibacterial agent is isothiazolinone: miconazole: the mass ratio of the nano zinc oxide is 30: 10: 3, and the modified HDPE resin material comprises 68 wt% of HDPE resin, 17 wt% of methacrylate, 10 wt% of melamine and 5 wt% of tetrapod zinc oxide whiskers.
The inner glass fiber filling layer 3 and the outer glass fiber filling layer 2 are sequentially formed on the surface of the outer HDPE pipe body 4, the diameter of the glass fiber filled in the inner glass fiber filling layer 3 and the outer glass fiber filling layer 2 is 13-15 micrometers, and the fiber monofilament of the glass fiber is 20-25 mm. The glass fiber of the inner glass fiber filling layer 3 is coated on the outer surface of the outer HDPE pipe body 4 after being impregnated with unsaturated polyester resin, the thickness of the glass fiber is 1.5mm, the outer glass fiber filling layer 2 is directly hot-pressed and formed on the surface of the inner glass fiber filling layer 3, and the forming thickness of the glass fiber filling layer is 0.7 mm. The protective outer tube 1 is a PE tube with the thickness of 11mm and is directly formed on the surface of the outer glass fiber filling layer 2.
When the antibacterial water pipe is formed, the antibacterial water pipe is formed in the following mode:
the production method comprises the steps of weighing raw materials of the inner-layer HDPE pipe body 5 and the outer-layer HDPE pipe body 4 according to the weight part ratio, mixing the raw materials in a high-speed mixer, cooling the raw materials after mixing, putting the raw materials into two hoppers of a double-layer composite extruder, and extruding and molding the raw materials together, wherein the temperature of the extrusion molding is controlled to be 180-190 ℃.
Coating an inner glass fiber filling layer 3 and an outer glass fiber filling layer 2 on the surface of the antibacterial inner tube which is subjected to extrusion molding, and performing hot-press molding on the outer surface of the outer glass fiber filling layer 2 at 90-110 ℃ to stabilize the surface of the outer glass fiber filling layer 2.
And then, putting the surface-stabilized intermediate product pipe of the outer-layer stabilizing glass fiber filling layer 2 into a die, weighing the raw materials of the protective outer pipe according to the weight part ratio respectively, mixing the raw materials in a high-speed mixer, cooling the raw materials after the mixing is finished, adding the raw materials into an extruder respectively, controlling the extrusion temperature to be 200 ℃ on the surface of the molded intermediate product pipe, and molding the surface of the intermediate product pipe to obtain the finished product after the protective outer pipe is well molded.
In order to test the antibacterial performance of the embodiment, the antibacterial water pipe under the conditions of the embodiment is sawn and cut into pieces with the square of 3cm, pond antibacterial sewage with the same components is dripped on the surface of the antibacterial water pipe, the antibacterial performance of the antibacterial water pipe is tested, and ten groups of the test result with the average value are as follows:
Figure BDA0002680880690000041
Figure BDA0002680880690000051
as can be seen from the above table, the antibacterial water pipe of the present embodiment has a better antibacterial effect under the action of the antibacterial coating 6 on the surface layer of the inner-layer HDPE pipe body 5, and the antibacterial effect can be maintained for a long time after stabilization, and the pipe body with the complete antibacterial coating has a better killing effect on common escherichia coli, staphylococcus aureus, streptococcus pyogenes and candida albicans, and meanwhile, has an obvious inhibition effect on the growth of surface lichen, is particularly suitable for being used as a water conveying pipeline for purified water filling, and can effectively ensure the filling environment of the purified water filling pipe.
Meanwhile, the scratch is utilized to simulate the surface characteristics of the pipe body under the condition that the pipe body is damaged by external force, and the antibacterial coating has cracks, so that the antibacterial coating still has a good killing effect on common escherichia coli, staphylococcus aureus, streptococcus pyogenes and candida albicans, and has an obvious inhibiting effect on the growth of the surface lichen.
Under the condition that the antibacterial coating is largely damaged, the antibacterial coating still has corresponding killing and inhibiting effects on common escherichia coli, staphylococcus aureus, streptococcus pyogenes and candida albicans in a short time, only under the condition of long-time non-treatment, the bacteria can continuously grow, the sterilizing effect is reduced, and a small amount of moss can grow on the damaged position on the surface of the antibacterial coating.
However, under the impact protection effect of the protective outer tube 1 and the double-layer glass fiber filling layer on the antibacterial inner tube in the embodiment, the antibacterial coating 6 of the inner-layer HDPE pipe body 5 leaves an obvious damage trace on the outer side of the pipe body in the simulation state that the surface damage proportion of the antibacterial coating is 30-35%, so that operation and maintenance personnel can find and process the pipe body within enough time to perform operation and maintenance treatment.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (8)

1. An antibacterial water pipe for filling purified water comprises a pipe body, and is characterized in that the pipe body comprises an outer protective pipe positioned on an outer layer and an inner antibacterial pipe positioned on an inner layer;
the protective outer pipe is a PE pipe; two glass fiber filling layers are formed between the protective outer pipe and the antibacterial inner pipe, the thickness of the glass fiber filling layer on the inner layer is 1-2 mm, glass fibers are coated on the outer surface of the antibacterial inner pipe after being impregnated with unsaturated polyester resin, and the thickness of the glass fiber filling layer on the outer layer is 0.5-1 mm, and the glass fiber filling layer is directly hot-pressed and formed on the surface of the glass fiber filling layer on the inner layer;
the antibacterial inner pipe is a double-layer composite HDPE pipe body, the inner-layer HDPE pipe body is a HDPE thin-wall pipe body with the thickness of 2-5 mm, and an antibacterial coating is formed on the inner surface of the HDPE thin-wall pipe body; the outer-layer HDPE pipe body is a modified HDPE pipe body and comprises a resin material and an antibacterial agent, wherein the resin material comprises 65-70 wt% of HDPE resin, 16-18 wt% of methacrylate, 7-9 wt% of melamine and 3-5 wt% of tetrapod-like zinc oxide whiskers, the antibacterial agent is a mixture of isothiazolinone and miconazole in a mass ratio of 3:1 and 20: 1-10: 1 of nano zinc oxide, and the addition amount of the antibacterial agent is 3-5 wt% of the resin material.
2. The antibacterial water pipe for filling purified water as claimed in claim 1, wherein the antibacterial coating is a polyisocyanate coating added with an antibacterial agent, and the coating thickness of the antibacterial coating on the inner surface of the HDPE thin-walled pipe body is 200-300 nm.
3. The antibacterial water pipe for filling purified water as claimed in claim 2, wherein the antibacterial agent adopted in the antibacterial coating is a mixture of zirconium phosphate silver-loaded and nano zinc oxide in a mass ratio of 5: 1-7: 1.
4. The antibacterial water pipe for filling purified water as claimed in claim 3, wherein the antibacterial agent is added in the antibacterial coating in an amount of 8-30 mg/kg of resin material.
5. The antibacterial water pipe for filling purified water according to claim 2, wherein the polyisocyanate used in the polyisocyanate coating layer contains at least two NCO groups per molecule.
6. The antibacterial water pipe for filling purified water according to claim 1, wherein the diameter of the glass fiber used in the two glass fiber filling layers is 13-15 μm, and the fiber monofilament of the glass fiber is 18-25 mm.
7. The antibacterial water pipe for filling purified water according to claim 1, wherein 4-7 wt% of a hydrophobic agent is added into the antibacterial coating layer, and the hydrophobic agent is a non-ionic paraffin dispersion.
8. The antibacterial water pipe for filling purified water as claimed in claim 1, wherein the thickness of the outer protective pipe is 70-120% of the sum of the thicknesses of the inner antibacterial pipes.
CN202010961943.6A 2020-09-14 2020-09-14 A antibiotic water pipe for pure water filling Withdrawn CN111928020A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113669513A (en) * 2021-07-06 2021-11-19 中裕软管科技股份有限公司 Water absorption device with variable pipe diameter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113669513A (en) * 2021-07-06 2021-11-19 中裕软管科技股份有限公司 Water absorption device with variable pipe diameter
CN113669513B (en) * 2021-07-06 2022-10-21 中裕软管科技股份有限公司 Water absorption device with variable pipe diameter

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