Wararka

Isticmaalka caagadaha synthetic ee laga soo saaro batroolka ayaa caqabad ku ah arrimaha wasakhda cad ee aad loo yaqaan. Raadinta kheyraadka kaarboonka la cusboonaysiin karo beddel ahaan waxay noqotay mid aad muhiim u ah oo degdeg ah. Polylactic acid (PLA) ayaa si weyn loo tixgaliyay inay tahay beddelka suurtagalka ah ee lagu beddeli karo walxaha caadiga ah ee ku saleysan batroolka. Iyada oo ah kheyraad dib loo cusboonaysiin karo oo laga soo qaatay biomass oo leh sifooyin farsamo oo ku habboon, biocompatibility wanaagsan, iyo hoos u dhac, PLA waxay la kulantay kobaca suuqa qarxa ee balaastikada injineernimada, agabka noolaha, dunta, codsiyada baakadaha warshadaha. Si kastaba ha noqotee, iska caabbinta kulaylka hooseeya iyo adayga hooseeya ayaa si ba'an u xaddidaya tirada codsiyada.

Isku darka polylactic acid (PLA) iyo elastomer silicone polyurethane (TPSiU) ayaa la sameeyay si loo adkeeyo PLA.

Natiijooyinka waxay muujiyeen in TPSiU si wax ku ool ah loogu dhex daray PLA, laakiin ma dhicin fal-celin kiimiko ah. Ku-darka TPSiU wax saameyn ah kuma yeelan heerkulka kala-guurka dhalada iyo heerkulka dhalaalidda ee PLA, laakiin wax yar ayaa hoos u dhigtay crystallinity ee PLA.

Natiijooyinka falanqaynta qaab-dhismeedka iyo farsamada firfircoon waxay muujiyeen iswaafajinta heerkul-xumada ee u dhexeeya PLA iyo TPSiU.

Daraasadaha habdhaqanka rheological waxay muujiyeen in PLA/TPSiU dhalaalku uu caadi ahaan ahaa dareeraha caaga ah. Marka waxa ku jira TPSiU uu kordhay, viscosity-ka muuqda ee isku dhafka PLA/TPSiU wuxuu muujiyay isbeddel ah inuu kor u kaco marka hore ka dibna hoos u dhaco. Ku darida TPSiU waxay saameyn weyn ku yeelatay sifooyinka farsamada ee isku dhafka PLA/TPSiU. Marka waxa ku jira TPSiU uu ahaa 15 wt%, kordhinta jabinta isku darka PLA/TPSiU ayaa gaadhay 22.3% (5.0 jeer ka ah PLA saafi ah), iyo saamaynta saamaynta waxa ay gaadhay 19.3 kJ/m2 (4.9 jeer ka ah PLA saafi ah), isagoo soo jeedinaya saameynta adag ee wanaagsan.

Marka la barbardhigo TPU, TPSiU waxay leedahay saameyn adag oo wanaagsan oo PLA ah oo dhinaca ah iyo iska caabbinta kulaylka ee dhinaca kale.

Si kastaba ha ahaatee,SILIKE SI-TPVwaa elastometer-ku-saleysan thermoplastic vulkanized firfircoon. Waxay soo jiidatay walaac badan sababtoo ah dusha sare oo leh taabashada xariirta gaarka ah iyo maqaarka-saaxiibtinimo, iska caabin aruurinta wasakh heer sare ah ， iska caabin xoqan oo wanaagsan, kuma jiraan balaastik iyo saliid jilcisa, ma jirto dhiig-bax / halis dhegdheg leh, ma ur.

Sidoo kale, saamayn ka wanaagsan oo adkaynaya PLA.

Qalabkan gaarka ah ee badbaadada leh iyo deegaanka-saaxiibtinimada leh, wuxuu bixiyaa isku-dhafka wanaagsan ee guryaha iyo faa'iidooyinka laga helo heerkulbeegyada iyo caag silikoon ah oo si buuxda ugu xiran. ku habboon dusha la xidhan karo, balaastikada injineernimada, agabka biomedical, dunta, codsiyada baakadaha warshadaha.

Xogta sare, oo laga soo qaatay Polymers (Basel). 2021 Juun; 13(12): 1953., Waxka bedelka Adkaynta ee Polylactic Acid by Thermoplastic Silicon Polyurethane Elastomer. iyo, Super Tough Poly(Lactic Acid) Waxay isku daraa Dib-u-eegis Dhameystiran" (RSC Adv., 2020,10,13316-13368)