Mainjiniya vakagadzira yakakwirira-inoshanda yekunze PDRC (passive masikati radiation kutonhora) polymer coating ine mhepo migero kubva ku nanometers kusvika kune miniscels inogona kushandiswa seyakazvimiririra inotonhorera mhepo padenga remba, zvivakwa, matangi emvura, mota uye kunyange spacecraft - chero chinhu chinogona Pendi.Vakashandisa nzira yekushandura chikamu chemhinduro kuti vape polima chimiro chakafanana nefuro. Kana chaiswa mudenga, chiputiriso chepolymer chePDRC chinotaridza chiedza chezuva uye chinopisa kuti tembiricha idzike pane zvemazuva ese zvekuvakisa kana kunyange ambient. mhepo.
Nekukwira kwekushisa uye mafungu ekupisa kunovhiringidza hupenyu munyika yose, kugadzirisa kutonhora kunowedzera kukosha.Iyi inyaya inokosha, kunyanya munyika dzichiri kusimukira, umo kupisa kwezhizha kunogona kuva kwakanyanya uye kunotarisirwa kuwedzera.Asi nzira dzinowanzotonhora, dzakadai semhepo. kugadzirisa, kunodhura, kushandisa simba rakawanda, kunoda kugadzirira kuwana magetsi, uye kazhinji kunoda ozone-depleting kana greenhouse-warming coolants.
Imwe nzira kune idzi nzira dzekutonhodza dzinoshandisa simba zvakanyanya iPDC ine chiyero chepamusoro chemhepo inopisa (Ɛ) inogona kuwedzera denga rekupisa kwekupisa kwekupisa, PDRC inonyanya kushanda.Kana R uye Ɛ yakakwirira zvakakwana, kunyange kana mambure ekupisa kupisa kuchaitika muzuva.
Kugadzira madhizaini anoshanda ePDC kunonetsa: magadzirirwo mazhinji achangoburwa akaomarara kana kuti anodhura, uye haagone kushandiswa zvakanyanya kana kuiswa pamatenga edzimba nezvivakwa zvine maumbirwo akasiyana. Nekudaro, machira machena kazhinji ane pigment anotora ultraviolet chiedza uye haaratidzi kureba kwemawavelengths echiedza chezuva zvakanaka, saka kuita kwavo kunongova pakati.
Columbia Engineering vatsvakurudzi vakagadzira yepamusoro-soro yekunze PDRC polymer coating ine nanometer-kusvika micron-scale air gap inogona kushandiswa seyakazvimiririra inotonhorera mweya uye inogona kudhayiwa nekupendwa pamatenga edzimba, zvivakwa, matangi emvura, mota, uye kunyange spaceship. - chero chinhu chinogona kupendwa.Vakashandisa nzira yekugadzirisa-based phase conversion kuti vape iyo polymer foam ine porous-yakafanana chimiro.Nekuda kwekusiyana kwerefractive index pakati pemhepo voids uye yakapoteredza polymer, mhepo inoputika mu porous polymer. kuparadzira uye kuratidza chiedza chezuva. Iyo polima inocheneruka uye nokudaro inodzivirira kupisa kwezuva, nepo kubuda kwayo kwechisikigo kuchibvumira kunyatsoburitsa kupisa mudenga.
Nguva yekutumira: Mar-18-2021