CN115651437A - Super-hydrophobic material, preparation method thereof and application thereof in drainage pipeline - Google Patents
Super-hydrophobic material, preparation method thereof and application thereof in drainage pipeline Download PDFInfo
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Abstract
A super-hydrophobic material, a preparation method thereof and application thereof in a drainage pipeline belong to the technical field of drainage pipeline corrosion prevention, and solve the problem that after sludge in the pipeline is accumulated at the bottom of the pipeline, corrosive substances in the sludge are in contact with the pipeline for a long time, and the pipeline can be seriously corroded. According to the invention, the super-hydrophobic material is applied to the drainage pipeline, and the prepared drainage pipeline anticorrosive coating has a self-cleaning function.
Description
Technical Field
The invention belongs to the technical field of drainage pipeline corrosion prevention, and particularly relates to a super-hydrophobic material, a preparation method thereof and application thereof in a drainage pipeline.
Background
The corrosion is one of the common diseases of the drainage pipeline, the potential safety hazard problems of external leakage of sewage and the like caused by corrosion and rupture of the drainage pipeline are increasingly prominent, and the social and economic development and public safety are severely restricted. At present, the technical means of anti-corrosion mortar, coating, carbon fiber reinforcement, reinforced concrete capping repair, magnesium hydroxide coating and the like are commonly adopted in engineering to realize the protection of the pipeline. However, after the sludge in the pipeline is accumulated at the bottom of the pipeline, corrosive substances such as sulfides in the sludge can be in contact with the pipeline for a long time, and extremely serious corrosion can be caused to the pipeline. Therefore, a pipeline anticorrosive coating with a self-cleaning function needs to be developed, so that the deposition of the deposition at the bottom of the pipeline is avoided, and the problem of pipeline corrosion is fundamentally solved.
In recent years, super-hydrophobic materials with special wettability are widely concerned by people, and from research on the super-hydrophobicity of lotus leaves by researchers in 1997, super-hydrophobic surfaces are hot spots of research. The super-hydrophobic material has extremely wide application prospect in medical biology, industrial and agricultural production and daily life, such as oil-water separation materials, anti-pollution woven fabrics, anti-drag materials and the like. Super-hydrophobic materials are applied to the asphalt pavement in Chongqing traffic university, and the problem of road icing is effectively solved.
The invention applies the super-hydrophobic material to the field of drainage pipeline corrosion prevention, develops the drainage pipeline corrosion prevention coating with the self-cleaning function, and avoids the deposition of the deposition in the pipeline.
Disclosure of Invention
Therefore, the technical problem to be solved by the present invention is to solve the problem that after sludge in a pipeline is accumulated on the bottom of the pipeline, corrosive substances in the sludge can be in contact with the pipeline for a long time, which can cause extremely serious corrosion to the pipeline, thereby providing a superhydrophobic material, a preparation method thereof and an application thereof in a drainage pipeline. The prepared anticorrosive coating for the drainage pipeline has a self-cleaning function.
Therefore, the invention provides the following technical scheme.
In a first aspect, the present invention provides the use of a superhydrophobic material in a drainage pipeline.
Further, the application of the super-hydrophobic material in the drainage pipeline comprises the following steps: spraying gelatinizing agent on the surface of the drainage pipeline, and then spraying super-hydrophobic material to form the super-hydrophobic coating.
Furthermore, the drainage pipeline is made of concrete, plastic or nodular cast iron;
the gelling agent comprises at least one of a low viscosity epoxy resin, a polyurethane, or a styrene-free resin; the low-viscosity epoxy resin is an epoxy resin with the viscosity of 1000-5000mpa.s at the room temperature after curing.
The spraying thickness of the gelling agent is determined according to the conditions of the material of the drainage pipeline and the like, and is not less than 3mm.
The thickness of the super-hydrophobic coating is 1-2 mm.
In a second aspect, the invention provides a method for preparing a super-hydrophobic material, which comprises the following steps:
step 1, preparing nano SiO 2 Adding the mixture into a mixed solution of absolute ethyl alcohol and ammonia water to obtain SiO 2 A dispersion liquid;
step 2, adding silane into SiO 2 In the dispersion, preparation of silane-modified SiO 2 A suspension;
step 3, adding epoxy resin and curing agent into SiO modified by silane 2 In suspension, preparation of silane-epoxy modified SiO 2 A suspension;
and 4, removing the liquid to prepare the super-hydrophobic anticorrosive material.
Further, in the step 1, the mass ratio of the absolute ethyl alcohol to the ammonia water is (6-9): 1;
the SiO 2 In the dispersion, the nano SiO 2 The concentration of (A) is 25 to 35g/L.
Further, the step 2 satisfies at least one of the following conditions:
(1) The silane is at least one of methylsilane or ethylsilane;
alternatively, the methylsilane is N- β - (aminoethyl) - γ -aminopropyltrimethoxysilane, dodecyltrimethoxysilane, octyltrimethoxysilane or vinyltrimethoxysilane;
alternatively, the ethyl silane is 3-aminopropyl triethoxysilane, vinyl triethoxysilane, or n-octyl triethoxysilane;
preferably N- β - (aminoethyl) - γ -aminopropyltrimethoxysilane;
(2) The silane and the nano SiO 2 The mass of (2-3): 1;
(3) Addition of silane to SiO 2 After the dispersion liquid is added, the mixture is sealed and stirred for 20 to 28 hours at normal temperature, and then stirred for 4 to 6 hours after the mixture is opened. The sealing is to prevent ammonia water and ethanol from volatilizing too early, and after the reaction is completed, the opening is opened to volatilize ammonia water.
Further, a diluent is added in the step 3, wherein the diluent is an inactive diluent;
optionally, the diluent is at least one of ethyl acetate, toluene, or acetone;
optionally, the mass ratio of the sum of the mass of the epoxy resin and the curing agent to the mass of the diluent is (7-10): 1;
further, the step 3 satisfies at least one of the following conditions:
(1) The sum of the mass of the epoxy resin and the curing agent and the nano SiO 2 The mass ratio of (2-3): 1;
(2) The reaction conditions of the step 3 are as follows: stirring at the room temperature of 1000-1500 rpm for 0.5-1 h.
Further, in the step 4, the liquid is removed by heating in a water bath, wherein the heating temperature in the water bath is 60-80 ℃.
In a third aspect, there is provided a superhydrophobic material made according to the above method.
Optionally, the epoxy resin in step 3 is at least one of a low viscosity epoxy resin (such as RESIPLAS process (a component)), CY179 cycloaliphatic epoxy resin or epoxy resin EP-4000;
optionally, the curing agent is at least one of EPILINE PROTECT (B component), methylhexahydrophthalic anhydride (MHHPA), isopropylenediamine and triethylenetetramine.
Further, the mass ratio of the epoxy resin to the curing agent is (2-3): 1.
the EPILINE PROTECT is a two-component product, which comprises an A-component epoxy resin and a B-component curing agent.
The diluent is an inactive diluent, reduces the viscosity of the epoxy resin, increases the fluidity and slows down the curing speed.
The technical scheme of the invention has the following advantages:
1. according to the application of the super-hydrophobic coating in the drainage pipeline, the lower rolling angle of the surface of the super-hydrophobic coating reduces the adhesive force between water drops and the surface of a substrate, so that the water drops can easily roll off from the surface of a solid, and therefore, sludge carried in sewage is not easy to deposit on the surface of the pipeline, namely, the super-hydrophobic coating has a self-cleaning function, the sludge is prevented from contacting the pipeline for a long time to corrode the pipeline, and the dredging work and cost of the drainage pipeline are effectively reduced.
The super-hydrophobic coating can enable the surface of the drainage pipeline to have good super-hydrophobicity and prevent water from entering, so that the permeation speed of water is greatly reduced to improve the corrosion resistance and the durability of the drainage pipeline.
The raw materials used in the invention are cheap and easily available chemicals, and the preparation process is simple and can be widely applied in engineering.
2. The preparation method of the super-hydrophobic material provided by the invention comprises the following steps: step 1, preparing nano SiO 2 Adding the mixture into a mixed solution of absolute ethyl alcohol and ammonia water to obtain SiO 2 A dispersion liquid; step 2, adding silane into SiO 2 In the dispersion, preparation of silane-modified SiO 2 A suspension; step 3, adding epoxy resin and curing agent into SiO modified by silane 2 Preparation of silane-epoxy modified SiO in suspension 2 A suspension; and 4, removing the liquid to prepare the super-hydrophobic anticorrosive material.
SiO modified by epoxy resin and silane 2 Hydrolysis of silane to produce hydroxyl groups, with SiO 2 The hydroxyl on the surface is subjected to condensation reaction, and the organic group of the silane is connected to the SiO through a stable silicon-oxygen bond 2 Surface to obtain SiO modified by silane 2 Suspending, and then connecting epoxy resin molecules to silane molecules through the reaction of epoxy groups of the epoxy resin molecules and amino groups of the silane molecules to obtain SiO modified by silane-epoxy resin 2 Suspension, so that it has a low surface energy.
In the step 1, the absolute ethyl alcohol as a dispersing solvent is not only low in price but also volatile, and cannot remain in the prepared super-hydrophobic material. The ammonia water is used for adjusting the PH value (PH keeps 8 ~ 9) of reaction for reaction rate, secondly there is unsaturated residual bond O on the nano-silica surface, combines easily with hydrogen bond in the ammonia water, forms hydroxyl on the silica surface, thirdly weak alkaline solution can promote silane hydrolysis, and volatile ammonia water can not remain in the super hydrophobic material of preparation.
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, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a photograph of example 6 in contact with water;
FIG. 2 is a photograph of example 6 in which a contact angle was measured using a contact angle tester;
FIG. 3 is a scanning electron microscope picture of the surface of the super-hydrophobic anti-corrosive coating prepared in example 6;
fig. 4 is a photograph of the contact angle measured by the contact angle tester in comparative example 1.
Detailed Description
The following examples are provided to better understand the present invention, not to limit the best mode, and not to limit the content and protection scope of the present invention, and any product that is the same or similar to the present invention and is obtained by combining the present invention with other features of the prior art and the present invention falls within the protection scope of the present invention.
The examples do not indicate specific experimental procedures or conditions, and can be performed according to the procedures or conditions of the conventional experimental procedures described in the literature in the field. The reagents or instruments used are not indicated by manufacturers, and are all conventional reagent products which can be obtained commercially.
Example 1
A preparation method of a super-hydrophobic material comprises the following steps:
step 1, 3g of absolute ethyl alcohol and 0.41g of ammonia water (with the concentration of 25 wt%) are mixed, and the mixture is magnetically stirred for 10min to form a mixed solution. 0.13g of nano SiO 2 Adding into the above mixed solution, stirring for 5min to obtain SiO 2 And (3) dispersing the mixture.
Step 2, adding 0.31g of N-beta- (aminoethyl) -gamma-aminopropyltrimethoxysilane into SiO 2 In the dispersion, sealing with a sealing film and stirring at normal temperature for 1d; taking down the sealing film, continuously stirring for 4h until the color becomes transparent, and preparing the SiO modified by silane 2 (ii) a suspension.
Step 3, mixing 0.2g of epoxy resin (RESIPLAS PROTECT) and 0.1g of curing agent (RESIPLAS PROTECT), and adding silane modified SiO 2 Adding 0.03g of diluent ethyl acetate into the suspension, stirring at the room temperature at 1500rpm for 0.5h to prepare the SiO modified by the silane-epoxy resin 2 And (3) suspension.
And 4, heating in water bath at 80 ℃ until the liquid is completely volatilized to obtain a white super-hydrophobic solid, and grinding to obtain the super-hydrophobic material.
Example 2
A preparation method of a super-hydrophobic material comprises the following steps:
step 1, 3.51g of absolute ethyl alcohol and 0.41g of ammonia water (concentration: 25 wt%) are mixed and magnetically stirred for 10min to form a mixed solution. 0.15g of nano SiO 2 Adding into the above mixed solution, stirring for 5min to obtain SiO 2 And (3) dispersing the mixture.
Step 2, adding 0.45g of N-beta- (aminoethyl) -gamma-aminopropyltrimethoxysilane into SiO 2 In the dispersion, a sealing film is adopted for sealing, and then stirring is carried out for 20h at normal temperature; taking down the sealing film, continuously stirring for 5h until the color becomes transparent, and preparing the SiO modified by silane 2 And (3) suspension.
Step 3, mixing 0.3g of epoxy resin (RESIPLAS PROTECT) and 0.15g of curing agent (RESIPLAS PROTECT), adding silane modified SiO 2 In suspensionThen 0.05g of ethyl acetate is added and stirred for 1h at the room temperature and the rotating speed of 1000rpm to prepare SiO modified by silane-epoxy resin 2 And (3) suspension.
And 4, heating in 70 ℃ water bath until the liquid is completely volatilized to obtain a white super-hydrophobic solid, and grinding to obtain the super-hydrophobic material.
Example 3
A preparation method of a super-hydrophobic material comprises the following steps:
step 1, 2.57g of absolute ethyl alcohol and 0.41g of ammonia water (concentration: 25 wt%) are mixed, and the mixture is magnetically stirred for 10min to form a mixed solution. 0.1g of nano SiO 2 Adding into the above mixed solution, stirring for 5min to obtain SiO 2 And (3) dispersing the mixture.
Step 2, adding 0.2g of N-beta- (aminoethyl) -gamma-aminopropyltrimethoxysilane into SiO 2 In the dispersion, a sealing film is adopted for sealing, and then stirring is carried out for 28 hours at normal temperature; taking down the sealing film, continuously stirring for 4h until the color becomes transparent, and preparing the SiO modified by silane 2 And (3) suspension.
Step 3, mixing 0.14g of epoxy resin (RESIPLAS PROTECT) and 0.07g of curing agent (RESIPLAS PROTECT), adding silane modified SiO 2 Adding 0.03g of ethyl acetate into the suspension, stirring at the room temperature at the rotating speed of 1200rpm for 0.5h to prepare the SiO modified by the silane-epoxy resin 2 (ii) a suspension.
And 4, heating in water bath at 60 ℃ until the liquid is completely volatilized to obtain a white super-hydrophobic solid, and grinding to obtain the super-hydrophobic material.
Example 4
A preparation method of a super-hydrophobic material comprises the following steps:
step 1, 3g of absolute ethyl alcohol and 0.41g of ammonia water (concentration 25%) are mixed, and the mixture is magnetically stirred for 10min to form a mixed solution. 0.13g of nano SiO 2 Adding into the above mixed solution, stirring for 5min to obtain SiO 2 And (3) dispersing the mixture.
Step 2, adding 0.31g of 3-aminopropyltriethoxysilane into SiO 2 In the dispersion, sealing by adopting a sealing film and stirring for 1d at normal temperature; taking down the sealing film, stirring for 4 hr until the color becomes transparent, and makingSilane modified SiO 2 And (3) suspension.
Step 3, mixing 0.2g of epoxy resin (RESIPLAS PROTECT) and 0.1g of curing agent (RESIPLAS PROTECT), and adding silane modified SiO 2 Adding 0.03g of ethyl acetate into the suspension, stirring at 1500rpm at room temperature for 0.5h to prepare the SiO modified by the silane-epoxy resin 2 And (3) suspension.
And 4, heating in water bath at 80 ℃ until the liquid is completely volatilized to obtain a white super-hydrophobic solid, and grinding to obtain the super-hydrophobic material.
Example 5
This example is essentially the same as example 1, except that the epoxy resin in this example is CY179 and the curing agent is methylhexahydrophthalic anhydride (MHHPA).
Example 6
Preparing a super-hydrophobic coating on the surface of a concrete block:
fully mixing gelling agent epoxy resin (RESIPLAS PROTECT) and a curing agent, uniformly coating the mixture on the surface of a concrete block, uniformly coating the super-hydrophobic material prepared in example 1 on the resin to form a coating with the thickness of 1mm, standing for 2 hours until the resin is cured, firmly adhering the super-hydrophobic material on the surface of the cement block, blowing off redundant powder, standing for 24 hours, and testing after the resin is completely cured.
Example 7
The application of the super-hydrophobic material in the drainage pipeline, wherein the drainage pipeline is made of concrete, comprises the following steps:
step 1, plugging: firstly, safely plugging the upstream and downstream of a to-be-constructed pipe section of a drainage pipeline to ensure that no water exists in the to-be-constructed pipe section;
step 2, dredging: cleaning up the sludge in the pipeline by using a high-pressure water wheel or a chemical cleaning method and the like;
step 3, spraying a gelling agent: uniformly spraying a mixture of epoxy resin (RESIPLAS PROTECT) and a curing agent on the surface of the pipeline by a spraying mode, wherein the thickness of the mixture is 3 mm;
step 4, spraying the superhydrophobic material prepared in example 1: and after the spraying of the gelatinizer is finished, immediately spraying the super-hydrophobic material with the thickness of 2mm, and ensuring that the super-hydrophobic material is uniformly sprayed on the surface of the pipeline before the gelatinizer is solidified (namely within 2 hours after the spraying of the gelatinizer is finished).
And 5, water supply: after the gelling agent is completely solidified (the complete solidification time is 24 h), the plugging device can be opened, and water is normally led in.
Comparative example 1
A preparation method of a super-hydrophobic anti-corrosion coating comprises the following steps:
step 1, 3g of absolute ethyl alcohol and 0.41g of ammonia water (with the concentration of 25 wt%) are mixed, and the mixture is magnetically stirred for 10min to form a mixed solution. 0.13g of nano SiO 2 Adding into the above mixed solution, stirring for 5min to obtain SiO 2 And (3) dispersing the mixture.
Step 2, adding 0.31g of N-beta- (aminoethyl) -gamma-aminopropyltrimethoxysilane into SiO 2 In the dispersion, sealing with a sealing film and stirring at normal temperature for 1d; taking down the sealing film, continuing stirring for 4h until the color becomes transparent, and preparing the silane modified SiO 2 And (3) suspension.
Step 3, mixing 0.2g of epoxy resin (RESIPLAS PROTECT) and 0.1g of curing agent (RESIPLAS PROTECT), and adding silane modified SiO 2 Adding 0.03g of diluting agent ethyl acetate into the suspension, stirring at the rotating speed of 1500rpm for 0.5h at room temperature to prepare the SiO modified by the silane-epoxy resin 2 And (3) suspension.
Step 4, modifying the SiO modified by the silane-epoxy resin prepared in the step 3 2 And spraying the suspension on the surface of the concrete block, standing, spraying again after the liquid becomes gelatinous, covering the matrix with the gelatinous liquid for 2mm, standing for 24h, completely curing the resin, and adhering the modified silicon dioxide on the surface of the matrix by using the resin for curing.
The photograph of comparative example 1, in which the contact angle was measured using a contact angle tester, is shown in fig. 4.
Test examples
(1) The water contact angle was measured using a contact angle tester, and the results are shown in table 1.
TABLE 1 Water contact Angle of Superhydrophobic anticorrosion coatings
| Water contact angle | |
| Example 1 | 152.15 |
| Example 2 | 151.52 |
| Example 3 | 150.15 |
| Example 4 | 144.51 |
| Example 5 | 146.15 |
| Example 6 | 152.15° |
| Comparative example 1 | 137.14° |
As shown in fig. 1 and 2, the super-hydrophobic anticorrosive coating prepared in example 6 has a surface contact angle with water of 152.15 °, and is a super-hydrophobic particulate substance.
(2) The microstructure of the surface of the super-hydrophobic anti-corrosive coating prepared in example 6 is observed by a scanning electron microscope, as shown in fig. 3, it can be seen that a layer of nano particles is uniformly covered on the surface of the concrete block.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. This need not be, nor should it be exhaustive of all embodiments. And obvious variations or modifications of the invention may be made without departing from the spirit or scope of the invention.
Claims (10)
1. The application of super-hydrophobic material in drainage pipeline.
2. The use of the superhydrophobic material of claim 1 in a drainage pipeline, comprising: spraying a gelling agent on the surface of the drainage pipeline, and then spraying a super-hydrophobic material to form a super-hydrophobic coating.
3. The use of the superhydrophobic material of claim 2, wherein the drain pipe is made of concrete, plastic or nodular cast iron;
the gelling agent comprises at least one of a low viscosity epoxy resin, a polyurethane, or a styrene-free resin;
the thickness of the super-hydrophobic coating is 1-2 mm.
4. A method for preparing the superhydrophobic material of any one of claims 1-3, comprising the steps of:
step 1, preparing nano SiO 2 Adding the mixture into a mixed solution of absolute ethyl alcohol and ammonia water to obtain SiO 2 A dispersion liquid;
step 2, adding silane into SiO 2 In the dispersion, preparing silane-modified SiO 2 A suspension;
step 3, adding epoxy resin and curing agent into SiO modified by silane 2 Preparation of silane-epoxy modified SiO in suspension 2 A suspension;
and 4, removing the liquid to prepare the super-hydrophobic anticorrosive material.
5. The preparation method of the superhydrophobic material according to claim 4, wherein in the step 1, the mass ratio of the absolute ethyl alcohol to the ammonia water is (6-9): 1;
the SiO 2 In the dispersion, the nano SiO 2 The concentration of (A) is 25 to 35g/L.
6. The method for preparing a superhydrophobic anticorrosive material according to claim 4, wherein the step 2 satisfies at least one of the following conditions:
(1) The silane is at least one of methylsilane or ethylsilane;
alternatively, the methylsilane is N- β - (aminoethyl) - γ -aminopropyltrimethoxysilane, dodecyltrimethoxysilane, octyltrimethoxysilane or vinyltrimethoxysilane;
alternatively, the ethyl silane is 3-aminopropyl triethoxysilane, vinyl triethoxysilane, or n-octyl triethoxysilane;
(2) The silane and the nano SiO 2 The mass of (2-3): 1;
(3) Addition of silane to SiO 2 After the dispersion liquid is added, sealing the opening, stirring for 20 to 28 hours at normal temperature, and stirring for 4 to 6 hours after opening.
7. The method for preparing the superhydrophobic preservative material according to the claim 4, wherein a diluent is further added in the step 3, and the diluent is a non-reactive diluent;
optionally, the diluent is at least one of ethyl acetate, toluene, or acetone;
optionally, the mass ratio of the sum of the mass of the epoxy resin and the curing agent to the mass of the diluent is (7-10): 1.
8. The method for preparing a superhydrophobic anticorrosive material according to claim 4, wherein the step 3 satisfies at least one of the following conditions:
(1) The sum of the mass of the epoxy resin and the curing agent isNano SiO 2 The mass ratio of (2-3): 1;
(2) The reaction conditions of the step 3 are as follows: stirring at the room temperature of 1000-1500 rpm for 0.5-1 h.
9. The preparation method of the superhydrophobic anticorrosive material according to claim 4, wherein in the step 4, the liquid is removed by water bath heating, and the water bath heating temperature is 60-80 ℃.
10. A superhydrophobic material made according to the method of any of claims 4-9.
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| CN101824278A (en) * | 2010-04-06 | 2010-09-08 | 南京工业大学 | Superhydrophobic inorganic organic nano composite polymeric coating material and preparation method thereof |
| CN102807803A (en) * | 2012-08-28 | 2012-12-05 | 山东交通学院 | Method for preparing organic and inorganic composite super-hydrophobic coatings |
| CN109590190A (en) * | 2018-11-19 | 2019-04-09 | 中国水利水电科学研究院 | A method of prevent pipeline from condensing |
| CN109679491A (en) * | 2018-12-04 | 2019-04-26 | 盐城市瑞通塑胶有限公司 | A kind of corrosion-resistant anti-blocking water pipeline and preparation method thereof |
| CN111299104A (en) * | 2020-03-17 | 2020-06-19 | 陕西科技大学 | Super-hydrophobic composite coating and preparation method thereof |
| CN115160926A (en) * | 2022-08-10 | 2022-10-11 | 四川晟达铁科新型建材有限公司 | Two-component super-hydrophobic coating and application thereof in crystallization-preventing drainage blind pipe |
-
2022
- 2022-11-04 CN CN202211377580.7A patent/CN115651437A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101824278A (en) * | 2010-04-06 | 2010-09-08 | 南京工业大学 | Superhydrophobic inorganic organic nano composite polymeric coating material and preparation method thereof |
| CN102807803A (en) * | 2012-08-28 | 2012-12-05 | 山东交通学院 | Method for preparing organic and inorganic composite super-hydrophobic coatings |
| CN109590190A (en) * | 2018-11-19 | 2019-04-09 | 中国水利水电科学研究院 | A method of prevent pipeline from condensing |
| CN109679491A (en) * | 2018-12-04 | 2019-04-26 | 盐城市瑞通塑胶有限公司 | A kind of corrosion-resistant anti-blocking water pipeline and preparation method thereof |
| CN111299104A (en) * | 2020-03-17 | 2020-06-19 | 陕西科技大学 | Super-hydrophobic composite coating and preparation method thereof |
| CN115160926A (en) * | 2022-08-10 | 2022-10-11 | 四川晟达铁科新型建材有限公司 | Two-component super-hydrophobic coating and application thereof in crystallization-preventing drainage blind pipe |
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