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Hydrophobic slurry, liquid diode and preparation method and application of liquid diode

A diode and slurry technology, which can be used in pharmaceutical formulations, textiles and papermaking, etc., can solve problems such as residues and waste, and achieve the effect of reducing loss and broad application prospects.

Active Publication Date: 2021-10-22
WUYI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the existence of the hydrophilic layer in the "liquid diode" in the related art, the liquid will remain in the hydrophilic layer during the liquid transmission process, resulting in unnecessary waste

Method used

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  • Hydrophobic slurry, liquid diode and preparation method and application of liquid diode
  • Hydrophobic slurry, liquid diode and preparation method and application of liquid diode
  • Hydrophobic slurry, liquid diode and preparation method and application of liquid diode

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] This embodiment is a preparation method of a liquid diode, comprising the following steps:

[0036] S1. Pretreatment of polyester fabric (polyester woven fabric, warp density is 188 threads / 10cm, weft density is 160 threads / 10cm, fineness is 35tex):

[0037] Wash the polyester fabric, dry it, and iron it for later use.

[0038] S2, preparation of hydrophobic slurry:

[0039] In terms of mass percentage, 80% waterproof agent (Shanghai Saichao Chemical Auxiliary Co., Ltd. MT410), 3% nano silicon dioxide (McLean, particle diameter is 15nm, specific surface area 300 ± 50m 2 / g, CAS No.: 68611-44-9) and 3% thickener (Foshan Chuanhua Fulian Fine Chemical Co., Ltd. ATF) were mixed (the balance was water), and the hydrophobic slurry was obtained under mechanical stirring for 20 minutes.

[0040] S3, such as figure 1 As shown, the above-mentioned hydrophobic slurry was coated on one side of the pretreated polyester fabric by the bar coating method, and the coating thickness w...

Embodiment 2

[0042] This embodiment is a preparation method of a liquid diode, comprising the following steps:

[0043] S1. Pretreatment of polyester fabric:

[0044] Wash the polyester fabric (polyester woven fabric, with a warp density of 188 threads / 10cm, a weft density of 160 threads / 10cm, and a fineness of 35tex), dry, and iron for subsequent use.

[0045] S2, preparation of hydrophobic slurry:

[0046] In terms of mass percentage, 80% waterproof agent (Shanghai Saichao Chemical Auxiliary Co., Ltd. MT410), 4% nano silicon dioxide (McLean, particle diameter is 15nm, specific surface area 300 ± 50m 2 / g, CAS No.: 68611-44-9) and 3% thickener (Foshan Chuanhua Fulian Fine Chemical Co., Ltd. ATF) were mixed (the balance was water), and the hydrophobic slurry was obtained under mechanical stirring for 20 minutes.

[0047] S3, such as figure 1 As shown, the above-mentioned hydrophobic slurry was coated on one side of the pretreated polyester fabric by the bar coating method, and the coati...

Embodiment 3

[0049] This embodiment is a preparation method of a liquid diode, comprising the following steps:

[0050] S1. Pretreatment of polyester fabric:

[0051] Wash the polyester fabric (polyester woven fabric, with a warp density of 188 threads / 10cm, a weft density of 160 threads / 10cm, and a fineness of 35tex), dry, and iron for subsequent use.

[0052] S2, preparation of hydrophobic slurry:

[0053] By mass percentage, 80% waterproofing agent (Shanghai Saichao Chemical Auxiliary Co., Ltd. MT410), 5% nano silicon dioxide (McLean, particle diameter is 15nm, specific surface area 300 ± 50m 2 / g, CAS No.: 68611-44-9) and 3% thickener (Foshan Chuanhua Fulian Fine Chemical Co., Ltd. ATF) were mixed (the balance was water), and the hydrophobic slurry was obtained under mechanical stirring for 20 minutes.

[0054] S3, such as figure 1 As shown, the above-mentioned hydrophobic slurry was coated on one side of the pretreated polyester fabric by the bar coating method, and the coating thi...

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Abstract

The invention discloses hydrophobic slurry, a liquid diode and a preparation method and application of the liquid diode. The liquid diode comprises the following preparation raw materials: of the hydrophobic slurry and polyester; and the hydrophobic slurry is prepared from the following raw materials of a fluorine-containing hydrophobic agent, nano silicon dioxide and a thickening agent. The preparation method of the liquid diode comprises the following steps of applying the hydrophobic slurry on the surface of the polyester, and carrying out drying to obtain the liquid diode. A prepared liquid diode fabric has the one-way moisture conduction capacity, the highest one-way transfer index reaches 966.9%, the highest liquid water dynamic transfer comprehensive index reaches 0.92, and the one-way transfer index and the liquid water dynamic transfer comprehensive index both reach the national level 5 standard; and according to the liquid diode, the loss in the liquid transmission process is reduced, and the continuous and directional transmission of liquid is realized.

Description

technical field [0001] The invention relates to the technical field of functional materials, in particular to a hydrophobic slurry, a liquid diode and a preparation method and application thereof. Background technique [0002] There are many animals and plants in nature, such as pitcher plants, cacti, desert beetles and lizards, they can cleverly rely on the special microstructure of their surface to control the directional movement of droplets, so as to survive in harsh environments. Similar to electronic diodes that preferentially conduct current in one forward direction and block current in the reverse direction, fluidic devices that rectify a liquid into a directional flow can be considered "liquid diodes". Such liquid diodes have broad applications in microfluidics, blood analysis, oil-water separation, and water harvesting. [0003] There are two types of liquid diodes, one involving a hydrophobic layer and a hydrophilic layer, the Janus material. The other is all ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06N3/04D06N3/14D06N3/00
CPCD06N3/042D06N3/14D06N3/04D06N3/0063D06N3/0059D06N3/0036D06N3/0006D06N2209/126D06N2211/10D06N2211/18
Inventor 黄钢晋义凯袁帅杰赵瑞溪赵景李峥嵘冯梓灵辜雪漫蔡昊鑫
Owner WUYI UNIV
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