Boka revasayendisiti kubva kuBrown University vakadzidza dambudziko rakagara risina mhinduro. Saka, pane imwe nguva, yakanyanyisa kusimba yepolymer PBO (polybenzoxazole) yakatsanangurwa yezvombo zvemuviri. Zvichienderana nepolybenzoxazole, serial body armor yakagadzirwa kuUS Army, asi mushure menguva yakati yakabviswa. Zvakazoitika kuti zvinhu izvi zvezvombo zvemuviri zviri pasi pekuparadzwa kusingafungidzirwe pasi pesimba rehunyoro. Izvi hazvidziviriri kugadzirwa uye kutengeswa kwezvombo zvemuviri kubva kune kwakasiyana shanduko yePBO pasi peiyo Zylon brand, asi kuvimbika kwezvinhu kuchiri kusiya zvakanyanya kudiwa.
Dambudziko nekuvimbika kwePBO nderekuti inoshandisa yakanyanya corrosive polyphosphoric acid (PPA) kuputsa cheni dzepolymer panguva yekugadzira zvinhu. Asidhi inoshanda sechinhu chinonyungudutsa uye sechinhu chinokonzera. Mamorekuru easidhi anosara mumapolymer mamorekuru anozoita kuti anzwe panguva yekushanda kwezvombo zvemuviri nekuparadzwa kusingatarisirwe kwezvinhu. Kana ukatsiva PPA nechimwe chinhu chisingakuvadzi, kuita kwePBO polymers kunogona kuvandudzwa zvinoshamisa, asi nei?
Masayendisiti kubva kuBrown University anoshandisa PBO sechinhu chinokurudzira kuvaka cheni dzemamorekuru alloy yegoridhe (Au) uye palladium (Pd) nanoparticles. Munguva yekuyedza, chiyero chakakwana cheimwe neimwe chakaonekwa - 40% goridhe uye 60% palladium - iyo yakanyanya kukurumidza kugadzirwa kwepolymer. Muchiitiko ichi, iyo solvent yaive formic acid, ine hushamwari kwezvakatipoteredza uye inogona kudzorerwazve mbishi zvinhu. Kazhinji, nzira itsva yetekinoroji haina simba-yakanyanya uye haina kudhura sekushandisa polyphosphoric acid.
Mushure mekugadzira mavhoriyamu akakwana ePBO polymer uchishandisa nzira nyowani, yakaedzwa nekuifashaidza mumvura neasidhi kwemazuva mazhinji. Izvo zvinhu hazvina kuderedzwa, izvo zvinopa tariro yekuwedzera kwakakosha mukuita kwezvipfeko zvezvombo zvemuviri uchiishandisa. Chinyorwa chakatsaurirwa kutsvagurudzo iyi chakaburitswa mujenari .
Source: 3dnews.ru