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Hydrophobic material, inner-layer hydrophobic tube and preparation method for inner-layer hydrophobic tube

A technology of hydrophobic pipe and inner layer, applied to the field of inner layer hydrophobic pipe and its preparation, can solve the problems of no practical significance, high cost, cumbersome preparation process, etc. Effect

Active Publication Date: 2018-08-07
RIFENG ENTERPRISE FOSHAN CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these methods have successfully realized the construction of hydrophobic coatings, the preparation process is relatively cumbersome and costly, and it has no practical significance in the application and promotion of pipes, and it is difficult to apply industrially.

Method used

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  • Hydrophobic material, inner-layer hydrophobic tube and preparation method for inner-layer hydrophobic tube
  • Hydrophobic material, inner-layer hydrophobic tube and preparation method for inner-layer hydrophobic tube
  • Hydrophobic material, inner-layer hydrophobic tube and preparation method for inner-layer hydrophobic tube

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] A kind of inner layer hydrophobic pipe, its preparation method is described as follows:

[0054] 1) Prepare inner layer pellets:

[0055] Its raw materials are introduced as follows:

[0056] Polyolefin (grade 4406C, Sinopec Maoming Petrochemical), low surface energy modifier (polytetrafluoroethylene powder grade L-5, Japan Daikin Industry Co., Ltd.), compatibilizer (PE-g-MAH grade is Yi CM5804), nanoparticles (nano-ZnO, particle size 0.1-1.5μm, Shijiazhuang Dayou Zinc Industry Co., Ltd.), the selected glacial acetic acid, stearic acid, and absolute ethanol are all industrial grades (Nanhai Senhe Chemical Trading Co., Ltd. supply);

[0057] Its formula consists of:

[0058] Polyolefin: low surface energy modifier: compatibilizer: the mass ratio of nanoparticle=100:10:5:3, put these components into high-speed mixer, rotating speed 200rpm, put into twin-screw extruder to extrude after stirring for 15min For granulation, the temperature range is 150-220° C., and the ro...

Embodiment 2-6

[0069] In order to verify the impact of the concentration of glacial acetic acid on the superhydrophobic properties of the inner wall of the pipe, Example 2-6 adopts the same preparation method as in Example 1 to prepare composite pipes, the only difference being that the glacial acetic acid solution used in Example 2-6 The mass concentrations are respectively 5%, 15%, 20%, 25%, 40%, respectively. The contact angles of the inner walls of the composite pipes obtained in Examples 2-6 were measured respectively.

[0070] Table 2 The results of the contact angle test on the inner wall of the pipe in Examples 2-6

[0071]

[0072] Can find out in conjunction with table 2, when the mass concentration of glacial acetic acid solution reaches 20-40%, its hydrophobicity of the product made is better, has formed the superhydrophobic surface that contact angle is greater than 150 °, and the mass concentration of glacial acetic acid solution is A superhydrophobic surface with better pe...

Embodiment 7

[0074] A kind of inner layer super-hydrophobic pipe material, its preparation method is described as follows:

[0075] 1) Prepare inner layer pellets:

[0076] Its raw materials are introduced as follows:

[0077] Polyolefin (grade HE3346RT, Borealis), low surface energy modifier (polytetrafluoroethylene powder grade L-5, Japan Daikin Industry Co., Ltd.), low surface energy modifier (perfluoroalkyl functional group olefins TG001, Japan Daikin Industry Co., Ltd.), compatibilizer (PE-g-MAH brand is DuPont E100), nanoparticles (nano-alumina, particle size is 0.05-2μm, Guangzhou Xinxi Chemical Industry), selected glacial acetic acid , stearic acid, and absolute ethanol are all industrial grades (provided by Nanhaisenhe Chemical Trading Company);

[0078] Wherein the formula consists of:

[0079] Polyolefin HE3346RT: Low surface energy modifier L-5: Low surface energy modifier TG1001: Compatibilizer E100: Nanoparticle Al 2 o 3 =100:10:5:3:5, put these components into a high-sp...

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Abstract

The invention provides a hydrophobic material, an inner-layer hydrophobic tube and a preparation method for the inner-layer hydrophobic tube. The preparation method for the inner-layer hydrophobic tube comprises the following steps that 1) inner-layer granules used for forming a hydrophobic inner layer and tube body granules used for forming a tube body are compounded through a multi-layer co-extrusion technology so as to form a composite tube, wherein the composite tube comprises the tube body and the hydrophobic inner layer which is compounded on the inner wall of the tube body, and nano-particles are contained in the inner-layer granules; 2) rough treatment is carried out on the surface of the hydrophobic inner layer, so that the surface of the hydrophobic inner layer forms a roughenedsurface, and then the roughened surface is etched; and 3) the surface of the hydrophobic inner layer is impregnated with a stearic acid solution so as to modify the surface of the hydrophobic inner layer. The inner-layer hydrophobic tube has the advantages of being low in preparation cost, simple in preparation process, relatively good in anti-fouling performance and relatively long in service life.

Description

technical field [0001] The invention relates to the field of plastic pipes, in particular to a hydrophobic material, an inner layer hydrophobic pipe and a preparation method thereof. Background technique [0002] A very important property of a solid surface is the wettability of the surface, which is mainly measured by the contact angle of the liquid on the solid surface. When the contact angle of the solid surface is greater than 90°, the surface of the material is considered to be hydrophobic; when the contact angle of the solid surface is less than 90°, the surface of the material is considered to be hydrophilic. When the contact angle between the surface and water is greater than 150° and the rolling angle is less than 10°, the solid surface is called a superhydrophobic surface. When water is on this surface, since the contact angle is greater than 150°, its contact area with the surface is very small, and water droplets are easy to roll off the surface, thus endowing t...

Claims

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Application Information

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IPC IPC(8): B29D23/00F16L9/133C08L23/00C08L27/18C08L51/06C08K3/22B24B5/40
CPCB24B5/40B29D23/001C08K2003/2296C08K2201/011C08L23/00C08L2205/03F16L9/133C08L27/18C08L51/06C08K3/22
Inventor 钟宇华李白千陈玉贺乐梅刘鑫秦小梅
Owner RIFENG ENTERPRISE FOSHAN CO LTD
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