Rays reveal waterproof material
A single ray can make ordinary cotton cloth tightly grasp the waterproof material, and it has the waterproof ability like a lotus leaf. After hundreds of times After washing and wear, it still does not stick to water. Recently, reporters learned that the Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Li Jingye’s research group used radiation grafting technology to break through the technical bottleneck of wear resistance of superhydrophobic textiles and overcome a key obstacle to the commercialization of waterproof materials.
Lotus leaves roll water beads and white hair floats in green water. The super-hydrophobic structure of nature has inspired mankind, and a large number of artificial super-hydrophobics have been developed. Material. But when it comes to getting them to stick to cotton and keep the clothes out of the water, scientists have encountered difficulties – the super-hydrophobic materials attached to cotton cannot withstand rubbing, and will fall off after a few more rubs. Or lose waterproof performance.
Based on years of experience in radiation chemistry research, researcher Li Jingye thought of using radiation grafting technology to solve this problem: soak a piece of ordinary cotton cloth into The waterproof material is placed in a solution containing fluorine-containing acrylic monomer and then irradiated with gamma rays. Gamma rays are high-energy electromagnetic waves that are widely used in wire and cable processing, medical device sterilization and other fields. Under the irradiation of this high-energy ray, the chemical bonds on the surface of the cotton cloth are opened, like a little hand stretching out, tightly grasping the long chain of fluorine-containing acrylic. When the irradiation ends, these waterproof materials are firmly attached to the surface of the cotton cloth.
This result was recently published in the German magazine “Advanced Materials”. The British Royal Society of Chemistry reported this result and commented: ” It overcomes a key obstacle to the commercialization of waterproofing materials.”
(Part of the above content comes from the Internet)
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