Polyethylene plastiki?
Hongu, polyethylene rudzi rwepurasitiki. Iyo polymer inoshandiswa zvakanyanya mumaindasitiri akasiyana siyana nekuda kweiyo yakasarudzika zvivakwa uye kuita zvakasiyana. Polyethylene chinhu chakareruka, chakasimba, uye chinochinjika chinogona kuumbwa zviri nyore kuita akasiyana maumbirwo nemafomu.
Polyethylene inogadzirwa kubva ku polymerization ye ethylene monomers. Ethylene igasi rehydrocarbon rinotorwa kubva kugasi rechisikigo kana petroleum. Kuburikidza nemaitiro anonzi polymerization, ethylene mamorekuru anobatanidzwa nemakemikari pamwechete kuti aumbe cheni refu dze polyethylene.
Kune marudzi akasiyana epolyethylene, anosanganisira high-density polyethylene (HDPE), low-density polyethylene (LDPE), uye linear low-density polyethylene (LLDPE). Idzi mhando dzinosiyana muchimiro chadzo chemolecular uye zvivakwa, zvichiita kuti dzive dzakakodzera kune akasiyana maapplication.
HDPE imhando yakaoma uye yakasimba yepurasitiki yepolyethylene. Inowanzoshandiswa mukugadzira mabhodhoro, pombi, uye midziyo. HDPE ine yakanakisa makemikari kuramba uye inoshingirira kukanganiswa uye UV mwaranzi, ichiita kuti ive yakakodzera kushandiswa kwekunze.
LDPE, kune rumwe rutivi, imhando inoshanduka uye isina kusimba ye polyethylene. Inowanzoshandiswa mukugadzira mabhegi epurasitiki, mafirimu, uye machira. LDPE ine kujeka kwakanaka, hunyoro kuramba, uye magetsi ekudzivirira zvivakwa.
LLDPE musanganiswa weLDPE uye linear polyethylene. Inosanganisa kuchinjika kweLDPE nesimba uye kuoma kweHDPE. LLDPE inowanzoshandiswa mukugadzira mafirimu akatambanudzwa, mafirimu ekurima, uye geomembranes.
Polyethylene ine akawanda mabhenefiti anobatsira mukushandiswa kwayo kwakapararira. Ikareruka, izvo zvinoita kuti iite mari-inoshanda pakufambisa uye inoderedza kushandiswa kwesimba. Iyo zvakare inoshingirira kumakemikari, hunyoro, uye UV mwaranzi, ichiita kuti ive yakakodzera kushandiswa kwekunze. Pamusoro pezvo, polyethylene inodzokororwa, inobatsira mukuedza kwekusimudzira.
Mukupedzisa, polyethylene zvirokwazvo rudzi rwepurasitiki. Icho chinhu chakasiyana-siyana chinoshandiswa zvakanyanya mumaindasitiri akasiyana siyana nekuda kwekusiyana kwayo. Kunyangwe iri HDPE, LDPE, kana LLDPE, polyethylene inopa huwandu hwemabhenefiti, anosanganisira kusimba, kuchinjika, uye makemikari kuramba. Kushandiswa kwayo kwakapararira mukurongedza, kuvaka, uye maindasitiri emotokari chiratidzo chekukosha uye kukosha kwayo.
