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Jami'ar Donghua ta kasar Sin ta kirkiro membrane nanofiber, mai hana ruwa numfashi da zafi conduction

Lokaci:2020-08-10 Hits:

Tawagar Yu Jianyong a Jami'ar Donghua ta ƙera ƙwayar nanofiber tare da ingantaccen ruwa da damshi., kazalika da kyau kwarai iska permeability da thermal watsin. Ya ƙunshi na musamman matrix polymer fluorinated polyurethane (pu), hydrophobic da high thermal conductivity na BN nano electrostatic kadi bayan hadawa, masu binciken ta hanyar sarrafa BN nanotubes guntu nauyin kaya da yanayin yanayin yanayin zafi (RH) samu mai kyau cibiyar sadarwa na BN permeable da porous tsarin BN cibiyar sadarwa ga membrane permeability da thermal watsin da aza mai kyau harsashi.. A lokaci guda, Ayyukan haɗin gwiwa na matrix na hydrophobic polymer matrix da kuma inganta yanayin da ake ciki na fim din ya sa fim din yana da kyakkyawan juriya na ruwa da superhydrophobicity..

Takamammen tsarin masana'anta na wannan fim shine narkar da FPU da DMAc da tarwatsa fim ɗin BN nanometer don yin ruwa mai juyawa a lokaci guda., sa'an nan kuma yi FPU / BNx fim daga electrostatic kadi bayan ultrasonic jiyya (x shine maida hankali na BN nanometer film). Matsakaicin FPU ya kasance 6%, yawan rabo na fluorinated polyurethane/polyurethane ya kasance 1/8, kuma yawan juzu'i na BN nanosheet ya kasance 0%, 6%, 12%, 18% kuma 24%, bi da bi.

An buga binciken a watan Yuni 19 a cikin mujallar ACS Applied Materials and Interfaces.




1. Gwajin zafin zafin jiki
An gwada cewa tasirin yanayin zafi na fim ɗin shine 17.9w / m · K, Matsakaicin zafin jiki na kwance shine 0.29w / m ·KK, da yawan watsa tururin ruwa (WVT) 11.6kg/m2 · rana. Bambanci a cikin thermal conductivity na FPU / BN0 fim, FPU / BN18-RH90 fim da FPU / BN18-RH50 fim za a iya gani a fili ta hanyar yin samfuri da lissafin iyakar zafin jiki.:






2. Gwajin Hydrophobicity
An gwada fim ɗin tare da kusurwar lamba ta 153° da kuma hydrostatic matsa lamba na 32 kPa.

3. Gwajin wuce gona da iri

Wannan nanofiber membrane ba za a iya amfani da shi kawai a cikin tufafin wasanni don taimakawa jikin mutum ya sami mafi kyawun sarrafa zafin jiki ba, amma kuma ana iya amfani da shi wajen kayan gini. Ta hanyar ba da cikakken wasa zuwa numfashinsa, zafi conduction da kuma hana ruwa Properties, zai iya rage yawan amfani da makamashi na ginin sararin samaniya, wanda zai taimaka wajen samun ci gaba mai dorewa a nan gaba.