Ngaba ndifanele ndikhethe iPC okanye iPP kwiikomityi zamanzi zeplastiki?

Kukho iintlobo ngeentlobo zeekomityi zamanzi zeplastiki, kwaye akunakuphepheka ukuba siya kukhazimla xa sikhetha iikomityi zamanzi zeplastiki.

Ukuze wonke umntu azi ngakumbi malunga neekomityi zamanzi zeplastiki kwaye akwazi ukukhetha iikomityi zamanzi ezizithandayo zeplastiki, makhe ndigxininise ekwaziseni kuwe umahluko phakathi kwePC kunye nePP kwizinto zeplastiki zekomityi yamanzi.

I-PC sisishunqulelo sesiNgesi se-polycarbonate, enye yeeplastiki eziqhelekileyo. Le nto ayinayo ityhefu kwaye isetyenziselwa ukwenza iibhotile zabantwana, iikomityi zesithuba, njl. Ngenxa yokuba iqulethe i-bisphenol A, iye yaphikisana.

Kwithiyori, nje kuphela i-100% ye-bisphenol-A iguqulwa ibe yisakhiwo seplastiki ngexesha lokwenziwa kwe-polycarbonate, kuthetha ukuba akukho bisphenol-a kwimveliso nonke, kwaye akukho mngcipheko kwimpilo. Nangona kunjalo, ukuba ixabiso elincinci le-BPA aliguqulwa libe kwisakhiwo seplastiki ye-polycarbonate, inokuthi ikhutshwe ibe kukutya okanye iziselo, isongela impilo kunye nokhuseleko lwabasebenzisi, ngakumbi abakwishumi elivisayo.

I-PP sisishunqulelo sesiNgesi se-polypropylene kwaye inokumelana nobushushu obuhle. Imveliso inokuvalwa kumaqondo obushushu angaphezu kwe-100 ngokukaCelsius kwaye ayisayi konakala kwi-150 degrees celcius ngaphandle kwamandla angaphandle.
I-Polypropylene yenye yeeplastiki eziqhelekileyo ezisetyenziswa kwii-oven microwave. Nangona kunjalo, emva kophando olucokisekileyo, siya kufumanisa ukuba i-polycarbonate kwimarike ihlala ibiza kakhulu kuneemveliso zepolypropylene, kwaye abathengi bavame ukulandela ingcamango "yexabiso eliphezulu, bhetele umgangatho". Enyanisweni, umahluko wexabiso kukuba ixabiso langoku letoni yepolycarbonate kwimarike liphezulu kakhulu kunexabiso letoni yepolypropylene.

Ukuthelekisa ezi zixhobo zimbini, kunokufunyanwa ukuba i-polypropylene inokumelana nokunxiba ngakumbi kunepolycarbonate, ke xa usenza iikomityi ezicacileyo, i-polycarbonate isetyenziswa ngokubanzi njengezinto eziphathekayo. Iimveliso zePolycarbonate zihle kakhulu kuneemveliso zepolypropylene. Nangona kunjalo, ukusuka kwindawo yokujonga ukhuseleko, ukushisa kweplastiki ye-polypropylene kufikelela kwi-170 ~ 220 degrees Celsius, ngoko ke amanzi abilayo akakwazi ukubola, ngoko ke i-polypropylene ikhuselekile kune-polycarbonate.