CN110760085A

CN110760085A - Self-purification pipeline and preparation method and application thereof

Info

Publication number: CN110760085A
Application number: CN201910980457.6A
Authority: CN
Inventors: 孙纬
Original assignee: Huzhou Jiansu Plastic Industry Technology Co Ltd
Current assignee: Huzhou Jiansu Plastic Industry Technology Co Ltd
Priority date: 2019-10-15
Filing date: 2019-10-15
Publication date: 2020-02-07

Abstract

The invention discloses a self-purification pipeline, which comprises a bacteriostatic pipeline and a self-cleaning layer uniformly sprayed on the inner wall of the bacteriostatic pipeline; the antibacterial pipeline is obtained by irradiating and grafting a plastic pipeline with a bacteriostatic agent; can effectively inhibit bacteria breeding and virus propagation, has self-cleaning effect, and avoids dirt accumulation to form a bacterial film. Moreover, the preparation method of the self-purification pipeline is disclosed, and the method has the advantages of simple steps, easy operation and low production cost; and it discloses above-mentioned self-purification pipeline can be used for the running water pipeline in, can obviously reduce the bacterium breeding rate in the running water, improves drinking water security.

Description

Self-purification pipeline and preparation method and application thereof

Technical Field

The invention relates to the technical field of pipes, in particular to a self-purification pipeline and a preparation method and application thereof.

Background

At present, conventional pipelines comprise PPR (tripropylene polyethylene) or PE (polyethylene) pipelines and steady-state pipes with inner layers made of PE or PP, and the PP and the PE do not have self-cleaning functions, so that the conventional pipelines can generate dirt accumulation or form a bacterial film after being used for a long time, and are not beneficial to healthy drinking water, and therefore, the research on the pipelines with the self-cleaning functions is urgent.

However, the use effect of the pipeline with the self-cleaning function provided in the prior art cannot reach the expectation, the effects of cleaning dirt, inhibiting bacterial breeding, resisting virus propagation and the like cannot be comprehensively realized, and the problems of dirt storage, dirt holding, bacterial breeding and virus breeding existing in the conventional pipeline cannot be really solved; in addition, the currently provided pipeline with the self-cleaning function is high in production cost, and the popularization and application of the self-cleaning pipeline are seriously inhibited.

Therefore, it is an urgent problem to provide a self-cleaning pipeline and a preparation method and application thereof.

Disclosure of Invention

In view of the above, the invention provides a self-cleaning pipeline, a preparation method and an application thereof, which can effectively inhibit bacterial breeding and virus propagation, have a self-cleaning effect, and avoid dirt accumulation to form a bacterial film.

In order to achieve the purpose, the invention adopts the following technical scheme:

a self-cleaning pipeline comprises a bacteriostatic pipeline and a self-cleaning layer uniformly sprayed on the inner wall of the bacteriostatic pipeline; the bacteriostatic pipeline is obtained by irradiating and grafting a plastic pipeline with a bacteriostatic agent.

Preferably, the plastic pipe comprises a PP pipe, a PE pipe, a PVC pipe, a PA pipe or an ABS pipe.

Preferably, the bacteriostatic agent comprises the following raw materials in parts by weight: 1-10 parts of coptis chinensis extract, 2-8 parts of coix seed extract, 3-9 parts of fructus forsythiae extract, 2-5 parts of almond extract, 3-7 parts of pepper extract and 55-70 parts of deionized water.

Preferably, the self-cleaning layer comprises the following raw materials in parts by weight: 2-6 parts of nano silver, 4-7 parts of polystyrene, 8-12 parts of polydimethylsiloxane, 16-20 parts of polytetrafluoroethylene, 8-16 parts of carbon fiber, 12-14 parts of bisphenol A epoxy resin and 2-6 parts of a compatilizer.

The invention also provides a preparation method of the self-purification pipeline, which comprises the following steps:

(1) weighing bacteriostatic agent raw materials and self-cleaning layer raw materials as required for later use;

(2) uniformly mixing bacteriostatic agent raw materials to obtain a bacteriostatic agent solution, soaking a plastic pipeline into the bacteriostatic agent solution for ultrasonic treatment, and then performing irradiation treatment to obtain a bacteriostatic pipeline;

(3) and uniformly mixing the raw materials of the self-cleaning layer to obtain a self-cleaning layer coating, and spraying the self-cleaning layer coating on the inner wall of the bacteriostatic pipeline to obtain the self-cleaning pipeline.

Preferably, the mixing temperature in the step (2) is 30-60 ℃, the stirring speed is 700-1000 r/min, and the time is 40-60 min.

Preferably, in the step (2), the ultrasonic treatment temperature is 35-60 ℃, the time is 2-5 h, and the power is 200-300W.

Preferably, the energy generated by the accelerator for irradiation treatment in the step (2) is 6-9 Mev, and the dose rate is 80-100 Gy.

Preferably, the mixing temperature in the step (3) is 160-180 ℃, the stirring speed is 600-800r/min, and the time is 20-40 min.

The invention also provides an application of the self-purification pipeline in a tap water pipeline.

According to the technical scheme, compared with the prior art, the invention discloses and provides the self-purification pipeline and the preparation method and application thereof, and the self-purification pipeline has the following beneficial effects:

(1) the self-cleaning pipeline provided by the invention can effectively inhibit bacteria breeding and virus propagation, has a self-cleaning effect, and avoids dirt accumulation to form a bacterial film;

(2) the preparation method of the self-purification pipeline disclosed by the invention is simple to operate, easy to expand production and suitable for industrial popularization;

(3) the adopted raw materials are low in cost, the preparation process is energy-saving and environment-friendly, the production cost can be reduced, and the environment pollution is avoided;

(4) the plastic pipeline base material is irradiated by the bacteriostatic agent, so that active ingredients in the bacteriostatic agent can be grafted with the plastic base material, and a stable bacteriostatic and antiviral effect is achieved; in addition, the self-cleaning coating is sprayed on the inner wall of the bacteriostatic pipeline, so that the self-cleaning effect can be achieved, the bacteriostatic and antiviral effects can be further achieved, and the using effect of the self-cleaning pipeline can be ensured through double effects;

(5) the self-purification pipeline disclosed by the invention can be used in a tap water pipeline, can obviously reduce the bacterial breeding rate in tap water and improve the drinking water safety.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The embodiment of the invention discloses a self-purification pipeline, which comprises a bacteriostatic pipeline and a self-cleaning layer uniformly sprayed on the inner wall of the bacteriostatic pipeline; the bacteriostatic pipeline is obtained by irradiating and grafting a plastic pipeline with a bacteriostatic agent.

The embodiment of the invention also provides a preparation method of the self-purification pipeline, which comprises the following steps:

(1) weighing bacteriostatic agent raw materials and self-cleaning layer raw materials as required for later use; the bacteriostatic agent comprises the following raw materials in parts by weight: 1-10 parts of coptis chinensis extract, 2-8 parts of coix seed extract, 3-9 parts of fructus forsythiae extract, 2-5 parts of almond extract, 3-7 parts of pepper extract and 55-70 parts of deionized water; the self-cleaning layer comprises the following raw materials in parts by mass: 2-6 parts of nano silver, 4-7 parts of polystyrene, 8-12 parts of polydimethylsiloxane, 16-20 parts of polytetrafluoroethylene, 8-16 parts of carbon fiber, 12-14 parts of bisphenol A epoxy resin and 2-6 parts of compatilizer

(2) Uniformly mixing bacteriostatic agent raw materials to obtain a bacteriostatic agent solution, soaking a plastic pipeline into the bacteriostatic agent solution for ultrasonic treatment, and then performing irradiation treatment to obtain a bacteriostatic pipeline; the mixing temperature is 30-60 ℃, the stirring speed is 700-1000 r/min, and the time is 40-60 min; the ultrasonic treatment temperature is 35-60 ℃, the time is 2-5 h, and the power is 200-300W; the energy generated by an accelerator for irradiation treatment is 6-9 Mev, and the dose rate is 80-100 Gy; the plastic pipeline comprises a PP pipe, a PE pipe, a PVC pipe, a PA pipe or an ABS pipe.

(3) Uniformly mixing the raw materials of the self-cleaning layer to obtain a self-cleaning layer coating, and spraying the self-cleaning layer coating on the inner wall of the bacteriostatic pipeline to obtain a self-cleaning pipeline; the mixing temperature is 160-180 ℃, the stirring speed is 600-800r/min, and the time is 20-40 min.

Example 1

The embodiment 1 of the invention also provides a preparation method of the self-purification pipeline, which comprises the following steps:

(1) weighing bacteriostatic agent raw materials and self-cleaning layer raw materials as required for later use; the bacteriostatic agent comprises the following raw materials in parts by weight: 1 part of coptis extract, 2 parts of coix seed extract, 3 parts of forsythia extract, 2 parts of almond extract, 3 parts of pepper extract and 55 parts of deionized water; the self-cleaning layer comprises the following raw materials in parts by mass: 2 parts of nano-silver, 4 parts of polystyrene, 8 parts of polydimethylsiloxane, 16 parts of polytetrafluoroethylene, 8 parts of carbon fiber, 12 parts of bisphenol A epoxy resin and 2 parts of compatilizer;

(2) uniformly mixing bacteriostatic agent raw materials to obtain a bacteriostatic agent solution, soaking a plastic pipeline into the bacteriostatic agent solution for ultrasonic treatment, and then performing irradiation treatment to obtain a bacteriostatic pipeline; the mixing temperature is 30 ℃, the stirring speed is 1000r/min, and the mixing time is 60 min; the ultrasonic treatment temperature is 35 ℃, the time is 5h, and the power is 200W; the energy generated by an accelerator for irradiation treatment is 6Mev, and the dose rate is 100 Gy; the plastic pipeline is a PP pipe.

(3) Uniformly mixing the raw materials of the self-cleaning layer to obtain a self-cleaning layer coating, and spraying the self-cleaning layer coating on the inner wall of the bacteriostatic pipeline to obtain a self-cleaning pipeline; the mixing temperature is 160 ℃, the stirring speed is 800r/min, and the mixing time is 30 min.

Example 2

The embodiment 2 of the invention also provides a preparation method of the self-purification pipeline, which comprises the following steps:

(1) weighing bacteriostatic agent raw materials and self-cleaning layer raw materials as required for later use; the bacteriostatic agent comprises the following raw materials in parts by weight: 10 parts of coptis extract, 6 parts of coix seed extract, 7 parts of forsythia extract, 3 parts of almond extract, 4 parts of pepper extract and 60 parts of deionized water; the self-cleaning layer comprises the following raw materials in parts by mass: 4 parts of nano-silver, 7 parts of polystyrene, 12 parts of polydimethylsiloxane, 20 parts of polytetrafluoroethylene, 10 parts of carbon fiber, 14 parts of bisphenol A epoxy resin and 6 parts of compatilizer

(2) Uniformly mixing bacteriostatic agent raw materials to obtain a bacteriostatic agent solution, soaking a plastic pipeline into the bacteriostatic agent solution for ultrasonic treatment, and then performing irradiation treatment to obtain a bacteriostatic pipeline; the mixing temperature is 60 ℃, the stirring speed is 700r/min, and the mixing time is 40 min; the ultrasonic treatment temperature is 60 ℃, the time is 2h, and the power is 300W; the energy generated by an accelerator for irradiation treatment is 9Mev, and the dose rate is 80 Gy; the plastic pipe comprises a PE pipe.

(3) Uniformly mixing the raw materials of the self-cleaning layer to obtain a self-cleaning layer coating, and spraying the self-cleaning layer coating on the inner wall of the bacteriostatic pipeline to obtain a self-cleaning pipeline; the mixing temperature is 180 ℃, the stirring speed is 600r/min, and the mixing time is 40 min.

Example 3

Embodiment 3 of the present invention further provides a method for preparing the self-cleaning pipeline, which specifically includes the following steps:

(1) weighing bacteriostatic agent raw materials and self-cleaning layer raw materials as required for later use; the bacteriostatic agent comprises the following raw materials in parts by weight: 7 parts of coptis chinensis extract, 5 parts of coix seed extract, 8 parts of forsythia suspense extract, 4 parts of almond extract, 6 parts of pepper extract and 55 parts of deionized water; the self-cleaning layer comprises the following raw materials in parts by mass: 5 parts of nano-silver, 6 parts of polystyrene, 10 parts of polydimethylsiloxane, 19 parts of polytetrafluoroethylene, 12 parts of carbon fiber, 13 parts of bisphenol A epoxy resin and 5 parts of compatilizer

(2) Uniformly mixing bacteriostatic agent raw materials to obtain a bacteriostatic agent solution, soaking a plastic pipeline into the bacteriostatic agent solution for ultrasonic treatment, and then performing irradiation treatment to obtain a bacteriostatic pipeline; the mixing temperature is 50 ℃, the stirring speed is 900r/min, and the time is 50 min; the ultrasonic treatment temperature is 55 ℃, the time is 4h, and the power is 280W; the energy generated by an accelerator for irradiation treatment is 8Mev, and the dose rate is 950 Gy; the plastic pipeline is a PVC pipe.

(3) Uniformly mixing the raw materials of the self-cleaning layer to obtain a self-cleaning layer coating, and spraying the self-cleaning layer coating on the inner wall of the bacteriostatic pipeline to obtain a self-cleaning pipeline; the mixing temperature is 175 ℃, the stirring speed is 700r/min, and the mixing time is 20 min.

Example 4

Embodiment 4 of the present invention further provides a method for preparing the self-cleaning pipeline, which specifically includes the following steps:

(1) weighing bacteriostatic agent raw materials and self-cleaning layer raw materials as required for later use; the bacteriostatic agent comprises the following raw materials in parts by weight: 1-10 parts of coptis chinensis extract, 8 parts of coix seed extract, 9 parts of fructus forsythiae extract, 5 parts of almond extract, 6.5 parts of pepper extract and 68 parts of deionized water; the self-cleaning layer comprises the following raw materials in parts by mass: 6 parts of nano-silver, 7 parts of polystyrene, 10 parts of polydimethylsiloxane, 17 parts of polytetrafluoroethylene, 15 parts of carbon fiber, 14 parts of bisphenol A epoxy resin and 6 parts of compatilizer.

(2) Uniformly mixing bacteriostatic agent raw materials to obtain a bacteriostatic agent solution, soaking a plastic pipeline into the bacteriostatic agent solution for ultrasonic treatment, and then performing irradiation treatment to obtain a bacteriostatic pipeline; the mixing temperature is 30-60 ℃, the stirring speed is 850r/min, and the time is 58 min; the ultrasonic treatment temperature is 50 ℃, the time is 4.5h, and the power is 280W; the energy generated by an accelerator for irradiation treatment is 8.8Mev, and the dose rate is 95 Gy; the plastic pipeline is an ABS pipe.

(3) Uniformly mixing the raw materials of the self-cleaning layer to obtain a self-cleaning layer coating, and spraying the self-cleaning layer coating on the inner wall of the bacteriostatic pipeline to obtain a self-cleaning pipeline; the mixing temperature is 168 ℃, the stirring speed is 750r/min, and the mixing time is 35 min.

Comparative example 1

The step (3) of the example 5 is omitted, and the step (1) of weighing the raw materials of the self-cleaning layer is omitted.

Comparative example 2

The step (2) of the embodiment 5 is omitted, and the step (1) of weighing bacteriostatic raw materials is omitted.

Example 5

The performance of the self-cleaning pipelines prepared in the above examples 1-4 and comparative examples 1-2 was tested.

1. The corrosion resistance of the self-cleaning pipes prepared in examples 1 to 4 was investigated, and the results are shown in table 1 below.

(1) Acid resistance detection

Respectively detecting tensile strength and elongation at break, soaking in 98% concentrated sulfuric acid, treating at 20 ℃ for 48h, detecting the tensile strength and elongation at break again, and calculating the change rate of the tensile strength and the change rate of the elongation at break;

(2) alkali resistance detection

Respectively detecting the tensile strength and the elongation at break, soaking the materials in 4.5mol/L NaOH solution for treatment, treating the materials at the temperature of 20 ℃ for 48 hours, then detecting the tensile strength and the elongation at break again, and calculating the change rate of the tensile strength and the change rate of the elongation at break.

TABLE 1

From the results of table 1 above, it can be seen that: compared with the self-purification pipelines prepared in comparative examples 1-2, the self-purification pipelines prepared in examples 1-4 of the invention have excellent corrosion resistance, and the tensile strength and the breaking elongation of the self-purification pipelines are not changed greatly after acid and alkali treatment, namely the corrosion-resistant anti-blocking drainage pipeline has excellent corrosion resistance.

2. The pipeline materials prepared in examples 1-4 and comparative examples 1-2 are used as detection objects respectively, and the antibacterial effect is detected through a membrane contact method experiment.

(1) Escherichia coli bacterial colony concentration (8009) is 5.4X 10⁵CFU/mL, respectively eluting the samples at different contact times of 0 hour contact time and 24 hours contact time, counting the obtained colony number CFU/mL, and calculating to obtain the Escherichia coli antibacterial rate.

(2) Staphylococcus aureus (ATCC6538) colony concentration 6.3X 10⁵And CFU/mL, respectively eluting the sample at different contact times of 0 hour contact time and 24 hours contact time, counting the obtained colony number CFU/mL, and calculating to obtain the staphylococcus aureus antibacterial rate.

(3) Candida albicans (ATCC10231) colony concentration of 3.1X 10⁵CFU/mL, respectively eluting the samples at different contact times of 0 hour contact time and 48 hours contact time, counting the obtained colony number CFU/mL, and calculating to obtain the Candida albicans antibacterial rate

TABLE 2

The results in the table 2 clearly show that the pipeline materials prepared in the embodiments 1 to 4 of the invention have excellent antibacterial effect, and the antibacterial rate of escherichia coli and staphylococcus aureus is over 95 percent, which is obviously improved compared with the comparative examples 1 to 2; the antibacterial rate of the candida albicans is more than 92%, and is obviously improved compared with comparative examples 1-2.

3. The results of the self-cleaning performance study of the self-cleaning pipes prepared in examples 1 to 4 are shown in table 3 below.

The self-purification pipelines prepared in the examples 1-4 and the comparative examples 1-2 are respectively communicated with a sewage draining outlet and are used normally, and the accumulation condition of dirt on the inner surface of the self-purification pipeline is detected after the self-purification pipeline is used for 1 month, 3 months, 9 months and 18 months.

Wherein the content of the first and second substances,

none indicates that there is no scale build-up on the inner surface of the pipe;

very little fouling: 1/4 representing the presence of scale build-up on, but insufficient to, the inner surface of the pipe

Small amount of fouling: representing that dirt accumulation exists on the inner surface of the pipeline, wherein the dirt area is 1/4-1 compared with the inner surface of the pipeline;

medium-amount dirt: representing that dirt accumulation exists on the inner surface of the pipeline and is distributed on the whole inner surface, wherein the thickness of the dirt layer is 1/15-1/10 times of the radius of the pipeline;

a large amount of dirt: representing that dirt accumulation exists on the inner surface of the pipeline and is distributed on the whole inner surface, wherein the thickness of the dirt layer is 1/10-1/5 times of the radius of the pipeline;

excessive fouling: the inner surface of the pipeline is covered with the dirt layer, and the thickness of the dirt layer is 1/5-1 times of the radius of the pipeline.

TABLE 3

The results in the table 3 clearly show that the self-purification effect of the pipeline prepared by the invention is excellent, and the pipeline communicated with sewage prepared by the pipelines prepared by the embodiments 1 to 4 has little or no dirt after 18 months of use, and the accumulation degree of the dirt is obviously reduced compared with that of the pipelines prepared by the comparative examples 1 to 2, which shows that the self-purification capability of the pipeline is obviously improved.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A self-cleaning pipeline is characterized by comprising a bacteriostatic pipeline and a self-cleaning layer uniformly sprayed on the inner wall of the bacteriostatic pipeline; the bacteriostatic pipeline is obtained by irradiating and grafting a plastic pipeline with a bacteriostatic agent.

2. A self-cleaning pipe as claimed in claim 1, wherein the plastic pipe comprises a PP pipe, a PE pipe, a PVC pipe, a PA pipe or an ABS pipe.

3. The self-purification pipeline according to claim 2, wherein the bacteriostatic agent comprises the following raw materials in parts by weight: 1-10 parts of coptis chinensis extract, 2-8 parts of coix seed extract, 3-9 parts of fructus forsythiae extract, 2-5 parts of almond extract, 3-7 parts of pepper extract and 55-70 parts of deionized water.

4. The self-cleaning pipeline according to claim 3, wherein the self-cleaning layer comprises the following raw materials in parts by mass: 2-6 parts of nano silver, 4-7 parts of polystyrene, 8-12 parts of polydimethylsiloxane, 16-20 parts of polytetrafluoroethylene, 8-16 parts of carbon fiber, 12-14 parts of bisphenol A epoxy resin and 2-6 parts of a compatilizer.

5. The preparation method of the self-purification pipeline as claimed in any one of claims 1 to 4, which is characterized by comprising the following steps:

6. The method for preparing a self-cleaning pipeline according to claim 5, wherein the mixing temperature in the step (2) is 30-60 ℃, the stirring speed is 700-1000 r/min, and the time is 40-60 min.

7. The preparation method of the self-purification pipeline as claimed in claim 6, wherein the ultrasonic treatment temperature in the step (2) is 35-60 ℃, the time is 2-5 h, and the power is 200-300W.

8. The method for preparing the self-cleaning pipeline according to claim 5, wherein the energy generated by the accelerator for irradiation treatment in the step (2) is 6-9 Mev, and the dose rate is 80-100 Gy.

9. The method as claimed in claim 5, wherein the mixing temperature in step (3) is 160-180 ℃, the stirring speed is 600-800r/min, and the time is 20-40 min.

10. Use of a self-cleaning pipe as claimed in any one of claims 1 to 4 in a mains water pipeline.