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A method for constructing liquid infusion super-slip coating based on one-step method of ternary system

A ternary system and liquid infusion technology, applied in the direction of coating, wax coating, etc., can solve the problems of shortening the preparation cycle, achieve the effect of reducing the preparation cycle, reducing the limitation of complex equipment, and cheap and easy raw materials

Active Publication Date: 2021-02-26
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method "combines three necessary existing preparation steps into one" to shorten the preparation cycle. By introducing a third component that is compatible with the lubricating liquid and the polymer, it perfectly solves the problem of the non-polar lubricating liquid and each other. compatibility of polymers

Method used

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  • A method for constructing liquid infusion super-slip coating based on one-step method of ternary system
  • A method for constructing liquid infusion super-slip coating based on one-step method of ternary system
  • A method for constructing liquid infusion super-slip coating based on one-step method of ternary system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Add 10g of polypropylene with a melt index of 35g / min, 10g of silicone oil with a viscosity of 10cs, and 30g of n-hexadecane into the beaker at the same time, stir them with a rotor to disperse them evenly, heat to 200°C, and keep warm for 1.5h to completely dissolve the polypropylene to obtain Homogeneous clear solution.

[0034] Spray the obtained solution on the glass sheet / metal substrate with a preheated spray gun, and wait for it to cool naturally to obtain a new type of liquid pouring surface coating. The electron microscope result of described coating is as figure 1 As shown, A is the cross-sectional electron microscope image of the coating, B is the high-magnification frontal electron microscope image of the coating, and C is the high-magnification cross-sectional electron microscope image of the coating; it can be observed from Figure B that there are a large number of microporous structures on the surface of the coating, combined with Figure The microporous ...

Embodiment 2

[0036] Add 10g of polypropylene with a melt index of 20g / min, 10g of silicone oil with a viscosity of 100cs, and 40g of n-hexadecane into the flask at the same time, stir with a rotor to disperse them evenly, heat to 200°C, and keep warm for 1.5h to completely dissolve the polypropylene to obtain Homogeneous clear solution.

[0037] Brush the obtained solution evenly on the glass sheet / metal substrate with a brush, and wait for it to cool naturally to obtain a new type of liquid pouring surface coating.

Embodiment 3

[0039] Add 10 g of polyethylene with a melt index of 35 g / min into the beaker and heat to 200°C until the polyethylene becomes a transparent molten state. Add 10g of silicone oil with a viscosity of 200cs and 30g of n-hexadecane to another beaker, stir with a stirrer to make them evenly mixed, add the evenly mixed solution into the beaker and keep it warm for 2h, and a homogeneous solution is formed in the flask.

[0040] Soak the glass sheet / metal substrate in the homogeneous solution, take it out after 30 seconds and wait for it to cool naturally to obtain a new type of liquid perfusion surface coating.

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Abstract

The invention discloses a method for constructing a liquid perfusion super-slip coating based on a one-step method of a ternary system, by adding a non-polar polymer, a chemically inert non-polar lubricating oil and the above-mentioned polymer and lubricating liquid into a reaction vessel Mix the miscible diluent to form a ternary system; then heat and stir the reaction until it is completely dissolved to obtain a homogeneous transparent solution; then coat the homogeneous transparent solution on the substrate and cool naturally to obtain a liquid perfusion surface coating . In the present invention, a third component that can be miscible with the polymer and the lubricating liquid is added to the reaction system as a solvent to form a ternary system, which can simultaneously dissolve the polymer and the perfusate at high temperature to form a homogeneous solution. This ternary system has high temperature The characteristics of miscible-low temperature phase separation, using the thermally induced phase separation method to spontaneously generate pores during the coating process, during the cooling phase separation process, the lubricating liquid and solvent remain on the surface of the solid phase as a perfusion liquid to form a liquid film, so that the liquid perfusion and phase separation The process is integrated to lock the lubricating liquid in the pores of the substrate, and build a liquid-infused super-slip coating in one step.

Description

technical field [0001] The invention relates to the technical field of material modification and coating, and more specifically, to a method for constructing a liquid-infused super-slip coating based on a one-step method of a ternary system. Background technique [0002] The smooth porous surface perfused with lubricating fluid is prepared by pouring lubricating fluid such as perfluoropolyether, silicone oil, ionic liquid, etc. into the substrate with micro-nano rough structure. The super-slippery surface can reach the smoothness of the molecular scale, can significantly reduce the sliding angle and hysteresis angle of the droplet, and has many advantages such as omnidirectional liquid repellency, self-healing, high transparency, and good temperature and pressure stability. [0003] The lip and inner wall of Nepenthes have micro-nano structure, which can store the lubricating fluid secreted by itself and form a liquid film on the surface, so that insects parked on the surfac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D123/12C09D183/04C09D123/06C09D191/06C09D123/20
CPCC08L2205/03C08L2205/035C09D123/06C09D123/12C09D183/04C09D191/06C08L83/04C08L23/20C08L23/06C08L23/12
Inventor 杨皓程李伟华卢嘉星吴国权陈伟业
Owner SUN YAT SEN UNIV
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