Masiku ano, anthu amadera nkhawa kwambiri za thanzi lawo. Anthu ena nthawi zambiri amawona nkhani zankhani zosonyeza kuti anthu ena omwe amadya kwa nthawi yayitali amakhala ndi vuto la thanzi. Choncho, tsopano anthu akuda nkhawa kwambiri ngati matumba apulasitiki ndi matumba a chakudya komanso ngati ali ovulaza thanzi lawo. Nazi njira zingapo zosiyanitsira matumba apulasitiki pazakudya ndi matumba wamba apulasitiki.
Ndikosavuta kugwiritsa ntchito matumba apulasitiki pazakudya ndi zinthu zina. Pakalipano, pali mitundu iwiri ya matumba apulasitiki pamsika, imodzi imapangidwa ndi zinthu monga polyethylene, yomwe ili yotetezeka ndipo ingagwiritsidwe ntchito poyika chakudya, ndipo ina ndi yapoizoni, yomwe ingakhale yovulaza kulongedza chakudya ndipo ikhoza kukhala amagwiritsidwa ntchito popakira wamba.
Matumba olongedza chakudyaNthawi zambiri timadziwika kuti ndi matumba a chakudya, omwe amakhala okhwima komanso apamwamba kwambiri pazakudya zawo. Zomwe timagwiritsa ntchito nthawi zambiri zimakhala zopanda poizoni, filimu yosamalira zachilengedwe monga chinthu chachikulu. Ndipo zopangira zosiyanasiyana zimakhala ndi mawonekedwe osiyanasiyana, kotero tiyenera kusankha molingana ndi mawonekedwe a chakudya chokha panthawi yopanga.
Kodi matumba apulasitiki ndi otani?
PE ndi polyethylene, ndipo matumba apulasitiki a PE ndi chakudya. PE ndi mtundu wa utomoni wa thermoplastic wopangidwa ndi ethylene kudzera mu polymerization. Ndi yopanda fungo komanso yopanda poizoni, ndipo imakhala yabwino kwambiri kutentha kutsika (kutentha kotsika kwambiri ndi -100 ~ 70 ℃). Ili ndi kukhazikika kwamankhwala abwino, kukana kwa asidi ndi alkali, ndipo sikusungunuka muzosungunulira wamba pa kutentha kwabwino. Ili ndi zotchingira bwino kwambiri zamagetsi komanso imayamwa madzi ochepa. Matumba apulasitiki amtundu wa chakudya nthawi zambiri amagawika m'matumba onyamula chakudya, matumba onyamula chakudya, matumba onyamula chakudya chofewa, matumba opangira zakudya zophika, matumba oyikamo zakudya zophika, matumba onyamula zakudya ndi zina zotero, ndi zinthu zosiyanasiyana. Matumba apulasitiki odziwika bwino amaphatikiza PE (polyethylene), zojambulazo za aluminiyamu, nayiloni ndi zida zophatikizika. Matumba apulasitiki okhala ndi zakudya amakhala ndi zinthu zofananira pofuna kuwonetsetsa kuti chakudya ndi chatsopano komanso chopanda matenda komanso chowola. Chimodzi ndi kutsekereza zosungunulira organic, mafuta, mpweya, nthunzi madzi ndi zina zotero; Chinacho ndi kukhala ndi kukana kwambiri permeability, kukana chinyezi, kuzizira, kukana kutentha, kupewa kuwala ndi kutchinjiriza, ndi kukhala ndi maonekedwe okongola; Chachitatu ndi yosavuta kupanga ndi otsika processing mtengo; Chachinayi ndi kukhala ndi mphamvu zabwino, matumba pulasitiki ma CD ndi mkulu mphamvu ntchito pa unit kulemera, ndi zimakhudza kugonjetsedwa ndi zosavuta kusintha.
Zakudya matumba apulasitiki ndi matumba wamba pulasitiki kuzindikira njira
Mtundu kuonera njira, chitetezo matumba apulasitiki nthawi zambiri yamkaka woyera, translucent, pulasitiki izi kumva afewetsedwa, kumva ngati pamwamba ndi sera, koma mtundu wa matumba pulasitiki poizoni zambiri hamster chikasu, kumva pang'ono povutirapo.
Njira yomiza madzi, mutha kuyika thumba la pulasitiki m'madzi, dikirani pang'ono kuti mulole, mudzapeza kuti matumba apulasitiki akupha ndi owopsa, mosiyana ndi otetezeka.
Njira yamoto. Matumba apulasitiki otetezeka ndi osavuta kuwotcha. Akayaka, amakhala ndi lawi la buluu ngati mafuta a makandulo, pamakhala fungo la parafini, koma utsi wochepa kwambiri. Ndipo matumba apulasitiki oopsa sangawotchedwe, lawi lamoto ndi lachikasu, kuyaka ndi kusungunuka kudzatulutsa silika, padzakhala fungo lopweteka ngati hydrochloric acid.
Fungo njira. Kawirikawiri, matumba apulasitiki otetezeka alibe fungo lachilendo, m'malo mwake, pali fungo lopweteka, lopweteka, lomwe lingakhale chifukwa chogwiritsa ntchito zina zowonjezera kapena khalidwe loipa.
Nthawi yotumiza: Oct-21-2022