Ke Kumu o ka Hydrophobic/Super Hydrophobic Coatings

Ua hoʻomākaukau ʻia nā pale sol-gel maʻamau me ka MTMOS a me TEOS ma ke ʻano he silane precursors e hana i kahi ʻupena organic/inorganic maʻemaʻe, maʻemaʻe a paʻa hoʻi ma kahi substrate aluminika. Ua ʻike ʻia kēlā mau uhi i ka hoʻopili maikaʻi ʻana ma muli o ko lākou hiki ke hoʻokumu i nā loulou Al-O-Si ma ke kikowaena uhi / substrate.
ʻO ka laʻana-II ma kēia haʻawina e hōʻike ana i kahi uhi sol-gel maʻamau. I mea e hōʻemi ai i ka ikehu o luna, a no laila e hoʻonui ai i ka hydrophobicity, ua hoʻokomo mākou i kahi organo-silane i loaʻa i kahi kaula fluorooctyl, me ka MTMOS a me TEOS (kahi laʻana A). Ua ʻike ʻia nā kaulahao alkyl i loaʻa nā ʻātoma fluorine e hāʻawi i ka hydrophobicity nui. ʻO ia mau kaulahao, ke hoʻopili ʻia i ka ʻupena polymer ma o nā loulou siloxane maʻalahi, e ʻike ʻia ke ʻano ma ka ʻili a no laila e hōʻemi i ka ikehu ʻili o nā uhi, e like me ka mea i hōʻike ʻia ma ke Kiʻi 1. o ka ili, akā ua hoʻoikaika pū ʻia e ka topography o nā kiʻiʻoniʻoni, ua hoʻāʻo mākou e hana i nā uhi me nā pae like ʻole o ka ʻili o ka ʻili. Ma nā laʻana B a me C, ua hoʻohui ʻia nā ʻāpana micro a me nā nanosilica e hana i ka ʻeleʻele o ka ʻili e hoʻonui ai i ka hydrophobicity. Ua hoʻohana ʻia ka hoʻohana ʻana i nā microparticles (sample B) a me nā micro + nanoparticles (sample C) e hoʻomaopopo i ka hopena o ka hoʻonohonoho ʻana o ia mau mea ma ka ʻili, a no laila, ka hopena hydrophobicity.

Hōʻike ka Kiʻi 2 i ka hōʻike ʻana o nā topographies i manaʻo ʻia o ka uhi ʻana me nā nano/microparticles a me ka ʻole, a me ko lākou kihi pili wai ma ia mau ʻili.