Shin polypropylene yana da guba lokacin zafi?
Bayanin polypropylene, wanda kuma aka sani da PP, shi ne resin thermoplastic da kuma babban polymer na kwayoyin halitta tare da kyawawan kaddarorin gyare-gyare, babban sassauci, da kuma juriya mai zafi. Ana amfani dashi sosai a cikin kayan abinci, kwalabe na madara, kofuna na filastik PP da sauran abubuwan buƙatun yau da kullun azaman filastik mai ƙimar abinci, da kuma a cikin kayan aikin gida, sassan motoci da sauran samfuran masana'antu masu nauyi. Duk da haka, ba mai guba bane lokacin zafi.
Dumama sama da 100 ℃: Pure polypropylene ba mai guba bane
A cikin zafin jiki na ɗaki da matsa lamba na al'ada, polypropylene ba shi da wari, mara launi, mara guba, abu mai ƙwanƙwasa. Ana amfani da barbashi tsantsa tsantsa na filastik PP azaman rufi don kayan wasan yara masu kyau, kuma masana'antar nishaɗin yara kuma suna zaɓar barbashi na filastik PP na zahiri don kwaikwayi tulin yashi don yara suyi wasa da. Bayan tsaftataccen barbashi na PP sun sha aiki kamar narkewa, extrusion, gyare-gyaren busa, da gyaran allura, suna samar da samfuran PP masu tsabta waɗanda ba su da guba a cikin ɗaki. Ko da a lokacin da aka hõre high-zazzabi dumama, kai yanayin zafi sama da 100 ℃ ko ma a cikin narkakkar jihar, PP tsarki kayayyakin har yanzu nuna rashin guba.
Koyaya, samfuran PP masu tsabta suna da ɗan tsada kuma suna da ƙarancin aiki, kamar ƙarancin juriya mara ƙarfi da juriya na iskar shaka. Matsakaicin tsawon rayuwar samfuran PP masu tsabta shine har zuwa watanni shida. Sabili da haka, yawancin samfuran PP da ake samu a kasuwa sune samfuran polypropylene gauraye.
Dumama sama 100 ℃: Polypropylene roba kayayyakin ne mai guba
Kamar yadda aka ambata a sama, polypropylene mai tsabta yana da mummunan aiki. Sabili da haka, lokacin sarrafa samfuran filastik na polypropylene, masana'antun za su ƙara mai, filastik, masu daidaita haske, da sauran abubuwa don haɓaka aikin su da haɓaka rayuwar su. Matsakaicin zafin jiki don amfani da waɗannan samfuran filastik polypropylene da aka gyara shine 100 ℃. Saboda haka, a cikin yanayin zafi na 100 ℃, samfuran polypropylene da aka gyara zasu kasance marasa guba. Duk da haka, idan dumama zafin jiki ya wuce 100 ℃, da polypropylene kayayyakin iya saki plasticizers da lubricants. Idan ana amfani da waɗannan kayan don yin kofuna, kwanoni, ko kwantena, waɗannan abubuwan da aka ƙara za su iya shiga cikin abinci ko ruwa sannan mutane su cinye su. A irin waɗannan lokuta, polypropylene na iya zama mai guba.
Ko polypropylene mai guba ne ko a'a depends galibi akan iyakokin aikace-aikacen sa da yanayin da aka fallasa shi. A taƙaice, tsantsar polypropylene gabaɗaya ba mai guba bane. Duk da haka, idan ba polypropylene mai tsabta ba, da zarar zafin amfani ya wuce 100 ℃, zai iya zama mai guba.