Labarai

Amfani da robobi na roba da aka samo daga man fetur yana fuskantar ƙalubale saboda sanannun batutuwa na gurɓatar fari. Neman albarkatun carbon mai sabuntawa a matsayin madadin ya zama mai matuƙar muhimmanci da gaggawa. An yi la'akari da Polylactic acid (PLA) a matsayin madadin da zai iya maye gurbin kayan da aka yi amfani da su a man fetur na gargajiya. A matsayin albarkatun mai sabuntawa da aka samo daga biomass tare da halayen injiniya masu dacewa, kyakkyawan jituwa da bio, da kuma lalacewa, PLA ta fuskanci ci gaban kasuwa mai ban mamaki a fannin injiniyan robobi, kayan aikin likitanci, yadi, aikace-aikacen marufi na masana'antu. Duk da haka, ƙarancin juriyar zafi da ƙarancin tauri yana iyakance kewayon aikace-aikacensa sosai.

An yi amfani da haɗakar polylactic acid (PLA) da thermoplastic silicone polyurethane (TPSiU) elastomer don ƙara ƙarfin PLA.

Sakamakon ya nuna cewa an haɗa TPSiU cikin PLA yadda ya kamata, amma babu wani abu da ya faru da sinadarai. Ƙarin TPSiU bai yi wani tasiri a fili ba kan zafin canjin gilashin da zafin narkewar PLA, amma ya ɗan rage yawan lu'ulu'u na PLA.

Sakamakon nazarin yanayin jiki da na injiniya mai ƙarfi ya nuna rashin daidaiton thermodynamic tsakanin PLA da TPSiU.

Nazarin halayyar rheological ya nuna cewa narkewar PLA/TPSiU yawanci ruwan pseudoplastic ne. Yayin da abun cikin TPSiU ya ƙaru, bayyanar danko na gaurayen PLA/TPSiU ya nuna yanayin tashi da farko sannan ya faɗi. Ƙarin TPSiU yana da tasiri mai mahimmanci akan halayen injina na gaurayen PLA/TPSiU. Lokacin da abun cikin TPSiU ya kasance 15 wt%, tsawaita lokacin karyewar gaurayen PLA/TPSiU ya kai 22.3% (sau 5.0 na tsantsar PLA), kuma ƙarfin tasirin ya kai 19.3 kJ/m2 (sau 4.9 na tsantsar PLA), yana nuna kyakkyawan tasirin tauri.

Idan aka kwatanta da TPU, TPSiU yana da tasiri mafi ƙarfi akan PLA a gefe guda kuma yana da juriya ga zafi a gefe guda.

Duk da haka,SILIKE SI-TPVwani nau'in roba ne mai ƙarfi wanda aka yi da filastik mai laushi wanda aka yi da silicone. Ya jawo damuwa sosai saboda yanayinsa, yana da taɓawa mai laushi da laushi, yana da juriya ga tarin datti, yana da juriya ga ƙashi, ba ya ɗauke da mai laushi da mai laushi, babu zubar jini / haɗarin mannewa, babu wari.

Haka kuma, mafi kyawun tasirin tauri akan PLA.

Wannan kayan aiki na musamman mai aminci da aminci ga muhalli, yana ba da kyakkyawan haɗin halaye da fa'idodi daga thermoplastics da robar silicone mai haɗin gwiwa gaba ɗaya. Ya dace da saman da za a iya sawa, robobi na injiniya, kayan likitanci, yadi, aikace-aikacen marufi na masana'antu.

Bayanin da ke sama, an ɗauko daga Polymers (Basel). 2021 Yuni; 13(12): 1953., Gyaran Ƙarfafawa na Polylactic Acid ta hanyar Thermoplastic Silicone Polyurethane Elastomer. da kuma, Super Tough Poly (Lactic Acid) Haɗa Cikakken Bita”(RSC Adv., 2020,10,13316-13368)