PC - cov khoom siv polycarbonate
Polycarbonate belongs rau tib tsev neeg ntawm cov ntaub ntawv xws liTPU.Nyob rau hauv rooj plaub ntawm PC, carbonate yog lub tsev thaiv thiab rov ua dua (li no polymer). PC yog heev resistant rau poob siab. Nws yog tawv, ruaj, thiab meej heev. Koj tuaj yeem xav txog tias nws nyuaj npaum li cas vim nws tau siv hauv F-22 Raptor lub cockpit npog. Polycarbonate yog tawv, tawv tawv uas zoo li iav tsis muaj qhov hnyav lossis tsis muaj zog. Qee lub lens rau tsom iav yog ua los ntawm PC.
Qhov teeb meem nrog PC yog tias nws tsis yog-malleable thiab tsis zoo heev ntawm kev khawb khawb. Cov khoom siv nyuaj thiab nyuaj tig nws mus rau hauv cov duab sib txawv ua rau PC cov khoom siv teeb meem rau kev ua cov xov tooj. Peb xav tau cov khoom uas yog mos thiab malleable txaus los ua ib lub xov tooj npog. Qhov no hloov peb mus rau lwm yam khoom uas yuav ua tau; Silicone. Cia peb saib qhov zoo thiab qhov tsis zoo ntawm silicone.
Cov qauv ntawm cov polymer zoo li cas. Cov dots ntsuab sawv cev rau carbon lossis silicon. Qhov no tsis yog tus sawv cev tiag tiag.
Cov khoom siv silicone
Silicone yog ib qho khoom muag, cov khoom siv roj hmab uas tseem nrov heev rau kev ua cov xov tooj. Cov khoom siv silicone yog nyias, contours lub xov tooj lub cev. Tej zaum qhov laj thawj loj tshaj vim li cas tib neeg mus rau silicone npog yog cov khoom muag muag thiab tuav zoo heev uas nws muab. Silicone npog tsis ntxiv rau feem ntau ntawm lub xov tooj thiab lawv yooj yim heev los tuav. Silicone kuj yog ib qho polymer, qhov rov ua dua yog silicon (sib txawv ntawm silicone). Yog vim li cas yog vim li cas silicon thiab carbon yog siv los ua polymer yog tias lawv muaj peev xwm tsim tau plaub muaj zog covalent bonds.
Qhov tsis zoo ntawm cov khoom siv silicone
Thaum piv rauTPUlossis txawm tias PC, muaj ntau qhov tsis zoo ntawm kev siv cov khoom siv silicone ua cov npog txawb. Thawj thiab tseem ceeb tshaj plaws yog nws tsis muaj peev xwm tiv thaiv lub cuab yeej. Kev tiv thaiv los ntawm kev poob siab (yog tias lub xov tooj ntog thiab tsoo ib qho nyuaj) yog thawj qhov laj thawj vim li cas tib neeg tau txais lub xov tooj npog. Thaum silicone zoo rau kev tiv thaiv los ntawm kev puas tsuaj thiab khawb, yuav luag tsis muaj kev tiv thaiv kev poob.
Lwm qhov teeb meem loj yog nws cov kav ntev. Cov khoom siv silicone tsis zoo kav ntev. Thaum cov khoom no ua haujlwm zoo ntawm qhov kub qis, lawv yog cov neeg ua haujlwm tsis zoo ntawm qhov kub thiab txias. Kev siv tsis tu ncua (kev sib txhuam) hnav lawv tawm thiab cov silicone tig gooey thiab nplaum. Tsis yog ib yam dab tsi uas koj xav khaws koj txhais tes, tshwj xeeb tshaj yog thaum koj lub xov tooj cua sov.