Hydrophobic spherulite, hydrophobic material, hydrophobic composite material, Janus composite material as well as preparation methods and application thereof

Abstract

The invention provides a hydrophobic spherulite, a hydrophobic material, a hydrophobic composite material, a Janus composite material as well as preparation methods and application thereof. The hydrophobic spherulite is a hydrophobic spherulite of a micro-nano structure formed by crystallizing a hydrophobic substance, and the micro-nano structure comprises a micron-sized crystal nucleus and a nano-sized crystal whisker growing on the surface of the crystal nucleus, wherein the hydrophobic spherulite is of the micro-nano structure formed by the hydrophobic substance, has a relatively large specific surface area, can load more hydrophobic groups, and has better hydrophobic performance and proper filtering efficiency; according to the hydrophobic material, the hydrophobic spherulite is endowed with multifunctionality by coating the hydrophobic spherulite with a drug layer; and according to the Janus composite material containing the hydrophobic material, a hydrophilic layer is arranged on the surface of one side of the hydrophobic composite material, so that the Janus hydrophilic layer is convenient for water vapor adsorption, the hydrophobic layer improves the concentration gradient of the water vapor, and directional conveying of the water vapor is realized.

Description

technical field [0001] The invention belongs to the field of materials, and relates to a hydrophobic spherulite, a hydrophobic material, a hydrophobic composite material, a Janus composite material and a preparation method and application thereof, and further relates to a hydrophobic spherulite and an application thereof. Background technique [0002] The 2019 novel coronavirus pneumonia epidemic has spread across the world. So far, tens of millions of people have been infected and millions of people have died, which has had a profound impact on public health and the global economy. The main route of transmission of the new coronavirus is respiratory droplet transmission and contact transmission. When an infected person sneezes, coughs, talks or even breathes, the droplets produced mix in the air to form aerosols, which lead to infection after inhalation. [0003] To fight against the new crown pneumonia epidemic, masks have become an essential protective product to cut off ...

AI Technical Summary

Problems solved by technology

However, existing protective masks have significant disadvantages, including low water vapor transmission efficiency and limited ability to inhibit harmful microorganisms

The exhaled water vapor cannot pass through the mask effectively and accumulates inside it, which affects the wearing comfort. Skin soaked in sweat for a long time may even appear red, swollen and itchy

When the glasses and the mask are worn at the same time, the water vapor will easily condense on the lenses and cause fogging, which will affect the wearer's vision

[0005] In particular, existing protective masks can only partially intercept pathogens such as bacteria, fungi, and viruses on the surface of the filter layer, but cannot effectively remove and kill them.

In the end, the discarded mask filter layer takes accumulated organic pollutants as nutrients and becomes a breeding ground for pathogenic microorganisms, which is easy to cause the spread of pathogens and secondary pollution

At the same time, the accumulation of microorganisms may lead to reduced ventilation and reduced filter life

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