PP (polypropylene) ndi polima thermoplastic ntchito ambiri ntchito zosiyanasiyana.Imawonedwa ngati chinthu chotetezeka chokhala ndi zinthu zingapo zodzitetezera: Zopanda poizoni: PP imayikidwa ngati chinthu chotetezedwa ku chakudya ndipo imagwiritsidwa ntchito kwambiri popakira zakudya ndi zotengera.Siziika pachiwopsezo chilichonse chaumoyo kapena kutulutsa mankhwala owopsa, zomwe zimapangitsa kuti zikhale zoyenera kukhudzana ndi chakudya ndi zakumwa.Kukana kutentha: PP imakhala ndi malo osungunuka kwambiri, nthawi zambiri pakati pa 130-171 ° C (266-340 ° F).Katunduyu amapangitsa kuti ikhale yoyenera kugwiritsa ntchito zomwe zimafuna kukana kutentha, monga zotengera zotetezedwa mu microwave kapena zinthu zomwe zimagwiritsidwa ntchito potentha.Kukana kwa Chemical: PP imalimbana kwambiri ndi mankhwala ambiri, kuphatikiza ma acid, alkalis, ndi zosungunulira.Kukana kumeneku kumapangitsa kuti ikhale yoyenera kugwiritsa ntchito zomwe zimakhudzana ndi zinthu zosiyanasiyana, monga zida za labotale, zida zamagalimoto, ndi zotengera zosungiramo mankhwala.Kutentha Kochepa: PP ndi chinthu chozimitsa chokha, chomwe chimatanthauza kuti chimakhala ndi moto wochepa.Zimafunika kutentha kwakukulu kuti ziwotche ndipo sizitulutsa utsi wapoizoni ukayaka.Izi zimapangitsa kukhala chisankho choyamba kwa mapulogalamu omwe chitetezo chamoto chimakhala chofunikira.Kukhalitsa: PP imadziwika chifukwa cha kulimba kwake komanso kulimba kwake.Ili ndi kukana kwakukulu, zomwe zikutanthauza kuti imatha kupirira madontho mwangozi kapena kukhudzidwa popanda kusweka.Izi zimachepetsa chiopsezo chakuthwa m'mphepete kapena splinter, kuchepetsa mwayi wovulala.Kubwezerezedwanso: PP ndiyothekanso kubwezerezedwanso ndipo malo ambiri obwezeretsanso amavomereza.Pobwezeretsanso PP, mutha kuchepetsa kukhudzidwa kwanu ndi chilengedwe, ndikupanga chisankho chokhazikika.Ngakhale PP nthawi zambiri imawonedwa ngati yotetezeka, ndikofunikira kudziwa kuti zowonjezera kapena zoyipitsidwa muzinthu, monga zopaka utoto kapena zonyansa, zitha kukhudza chitetezo chake.Kuonetsetsa chitetezo, tikulimbikitsidwa kugwiritsa ntchito zinthu za PP zomwe zimagwirizana ndi malamulo ndi malamulo a dziko kapena mayiko ndikutsatira malangizo a wopanga kuti agwiritsidwe ntchito bwino ndi kutaya.
Nthawi yotumiza: Oct-18-2023