Wear-resistant, hydrophobic and lipophilic material, preparation method therefor and application of wear-resistant, hydrophobic and lipophilic material

A hydrophobic, lipophilic and lipophilic technology, applied in separation methods, chemical instruments and methods, liquid separation, etc., can solve the problems of low purity of oil phase and water phase, affecting application, long preparation time, etc. The effect of large-scale production, good industrial development prospects, good environmental stability

Active Publication Date: 2017-03-22
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to statistics, the amount of oil flowing into rivers and oceans due to sudden oil spill accidents reaches 3 million to 5 million tons per year, which not only damages the ecological environment, but also causes huge economic losses.
[0005] Traditional oil-water separation methods include centrifugation, chemical and physical methods, adsorption methods, gravity sedimentation, etc. However, these methods have certain limitations: long preparation time, repeated manual operations, high equipment requirements, low efficiency, and process steps Complexity, secondary pollution, high operating cost, low purity of the oil phase and water phase after separation, etc., directly affect the practical application

Method used

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  • Wear-resistant, hydrophobic and lipophilic material, preparation method therefor and application of wear-resistant, hydrophobic and lipophilic material
  • Wear-resistant, hydrophobic and lipophilic material, preparation method therefor and application of wear-resistant, hydrophobic and lipophilic material
  • Wear-resistant, hydrophobic and lipophilic material, preparation method therefor and application of wear-resistant, hydrophobic and lipophilic material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] In this embodiment, the base material is carbon fiber cloth.

[0038] Using the base material to prepare super-hydrophobic and super-oleophilic materials specifically includes the following steps:

[0039] Step 1: Soak the carbon fiber cloth in acetone to remove oil and impurities, then clean the residual solution and acetone on the surface of the carbon fiber cloth with ethanol solution, and finally clean it with deionized water. The cleaning is performed in ultrasonic. Then put it in an oven and dry it at 80-100°C for later use.

[0040] Step 2: Dissolve 1 g of copper acetate and 2.8 g of stearic acid in 100 ml of absolute ethanol, and stir at a constant speed for 10 min on a magnetic stirrer to obtain a metal stearate suspension;

[0041] 1g of low surface energy polydimethylsiloxane and 0.1g of curing agent were mixed and dissolved in 100ml of ethyl acetate to obtain a curing agent solution;

[0042] The stearic acid metal salt suspension is mixed with the curing ...

Embodiment 2

[0050] In this embodiment, the base material is completely the same as that in Embodiment 1.

[0051] The base material is used to prepare super-hydrophobic and super-oleophilic materials. The preparation method is basically the same as that in Example 1, except that in step 2, 0.2g of low surface energy polydimethylsiloxane and 0.02g The curing agent was mixed and dissolved in 100ml of ethyl acetate to obtain a curing agent solution.

[0052] The scanning electron topography of the surface of the fiber cloth film coating made above is similar to figure 1 As shown, PDMS and stearate were shown to adhere to the substrate surface after drying.

[0053] The apparent contact angle of the fiber cloth membrane prepared above to water and oil was tested, and the specific test method was exactly the same as that in Example 1. The measured results are that the contact angle of the sample to water is 136.23°, and the contact angle to oil is 0°.

Embodiment 3

[0055] In this embodiment, the base material is completely the same as that in Embodiment 1.

[0056] The base material is used to prepare superhydrophobic and superoleophilic materials. The preparation method is basically the same as that in Example 1, except that in step 2, 0.6g of low surface energy polydimethylsiloxane and 0.06g of The curing agent was mixed and dissolved in 100ml of ethyl acetate to obtain a curing agent solution.

[0057] The scanning electron topography of the surface of the fiber cloth film coating made above is similar to figure 1 As shown, PDMS and stearate were shown to adhere to the substrate surface after drying.

[0058] The apparent contact angle of the fiber cloth film coating prepared above to water and oil was tested, and the specific test method was exactly the same as that in Example 1. The measured results are that the contact angle of the sample to water is 147.62°, and the contact angle to oil is 0°.

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Abstract

The invention discloses a wear-resistant, hydrophobic and lipophilic material. According to the wear-resistant, hydrophobic and lipophilic material, a lipophilic substrate material is adopted, metal stearate is adhered to the surface of the substrate, and a wear-resistant and hydrophobic surface layer is formed on the surface of the substrate by using the hydrophobic characteristic of the metal stearate, so that wear-resistant, hydrophobic and lipophilic effects are achieved. The material is low in cost, has good hydrophobic characteristic and lipophilic characteristic and can be applied to oil-water separation technologies, and an oil-permeable and water-impermeable meshed membrane is achieved; and the material is applicable to the separation of water-insoluble organic solvents such as kerosene, gasoline, diesel, engine oil, toluene, dichloromethane, vegetable oil and petrol from water.

Description

technical field [0001] The invention relates to the technical field of superhydrophobic materials, in particular to a wear-resistant hydrophobic and lipophilic material, its preparation method and application. Background technique [0002] Both water resources and oil resources are precious natural resources. The discharge of oily sewage is not only a waste of resources, but more seriously damages the ecological environment and ultimately affects the survival of human beings. Therefore, oily sewage must be treated before discharge. [0003] With the vigorous development of industrial technology, oil has become one of the most important energy sources in the world. The exploitation of oil in various countries is also gradually increasing. In the exploration and development of offshore oil, blowouts, crude oil spills, platform or drilling equipment capsizing accidents occur from time to time. In addition, with the rapid growth of population and the development of industrializ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D17/02
CPCB01D17/02B01D17/085
Inventor 曾志翔朱敬芳李龙阳王刚王立平赵文杰
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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