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Oil gel coating for water delivery, drag reduction and pollution resistance and preparation method thereof

A technology of oil gel and hydrogel, which is applied in the fields of drag reduction surface processing and antifouling, and can solve the problems of bending resistance and light transmission limitations, unfavorable pipeline layout observation, and inapplicability.

Inactive Publication Date: 2021-06-15
NORTHWEST UNIV(CN)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the preparation process of the generally used porous solid-phase materials is not suitable for the coating of the inner wall of the pipeline, and its bending resistance and light transmission have certain limitations, which is not conducive to the layout of the pipeline and the observation of the interior.

Method used

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  • Oil gel coating for water delivery, drag reduction and pollution resistance and preparation method thereof
  • Oil gel coating for water delivery, drag reduction and pollution resistance and preparation method thereof
  • Oil gel coating for water delivery, drag reduction and pollution resistance and preparation method thereof

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preparation example Construction

[0042] A preparation method for an oil-gel coating used for water transmission and anti-fouling reduction, comprising the following steps:

[0043] The first step, the coating of the alginate of monovalent cations treated with lipophilic treatment on the inner wall of pipeline 1: the aqueous solution of alginate salt of monovalent cations with a mass concentration of 0.1%-10% lipophilic treatment is injected into the pipeline 1, and the oil treated The aqueous alginate solution of monovalent cations forms an oil-treated monovalent cation aqueous alginate liquid column in the pipeline 1, and the oil-treated monovalent cation alginate aqueous solution in the pipeline 1 is pushed by a push tool The liquid column moves at a uniform speed in one direction and is discharged from the pipeline 1. The alginate of monovalent cations treated with oil is sodium alginate or potassium alginate; the driving tool is an air pump;

[0044] The second step is continuous cross-linking; the divale...

Embodiment 1

[0051] Such as figure 1 and figure 2 As shown, inject 5 mL of 1% sodium alginate aqueous solution 2 through a microflow pump into a silicone tube pipe 1 with an inner diameter of 3 mm to form a liquid column of sodium alginate aqueous solution 2, and the left side of the pipe 1 is sodium alginate aqueous solution 2 , the right side is air 3, such as image 3As shown, use an air pump to push the liquid column of alginate aqueous solution to move in one direction at a uniform speed and discharge it out of the pipeline 1 at a moving speed of 2mm / min. 1 On the left inner wall is a sodium alginate aqueous solution 2 flowing through the sodium alginate film 4 formed on the inner wall of the pipeline 1; as Figure 4 As shown, the calcium chloride aqueous solution with a mass concentration of 1% was continuously injected into the pipeline 1 coated with sodium alginate at a flow rate of 1mL / min for 10 minutes, and calcium alginate in crosslinking was formed on the left side of pipel...

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Abstract

The invention relates to the technical field of anti-fouling and anti-drag surface processing, in particular to an oil gel coating for water delivery, drag reduction and pollution resistance and a preparation method thereof. The oil gel coating for water delivery, drag reduction and pollution resistance comprises a framework of a porous net structure, the framework is alginate modified by oleophylic groups, cations of the alginate are divalent cations, and the framework is filled with a hydrophobic liquid material; and the light transmittance of the coating ranges from 50% to 100%. A precursor of the coating is a liquid phase, so that the inner wall of a pipeline can be conveniently coated, the net-shaped structure is divalent alginate modified by the oleophylic groups, the net-shaped structure is filled with the hydrophobic liquid material, so that the coating is of a super-smooth structure, the anti-pollution and stability of the coating are superior to those of a traditional solid coating, and the coating can be applied to flexible pipes due to the flexible characteristic of the coating. The coating is high in light transmission, so that the internal fluid can be observed conveniently, or the internal fluid can be subjected to photochemical reaction.

Description

technical field [0001] The invention relates to the technical field of anti-fouling and drag-reducing surface processing, in particular to an oil gel coating for water transport and anti-fouling reduction and a preparation method thereof. Background technique [0002] The inner wall of the liquid transportation pipeline will be rough and the diameter of the pipe will be reduced due to precipitation and adsorption, which greatly reduces the transportation efficiency. In particular, the inner wall of the water pipeline is extremely susceptible to bacteria and algae colonization, multiplication and pollution and is difficult to clean. The current antibacterial and antifouling coatings mostly use polytetrafluoroethylene or silver as the main material, and the preparation methods are mostly suitable for the surface of the material, but not for the inner wall of the closed pipeline, and the flexibility, light transmission and cost performance are not high. [0003] The ultra-slip...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D105/04C09D183/04C09D7/65
CPCC08L2203/18C09D105/04C09D7/65C08L83/04
Inventor 秦嘉乐罗昊经光银刘亚楠
Owner NORTHWEST UNIV(CN)