Mhando:

Mabhegi Akarukwa, Anozivikanwawo seyenyoka ganda mabhegi. Iwo rudzi rwepurasitiki runonyanya kushandiswa pakurongedza. Zvigadzirwa zvaro zvinogadzirwa zvinowanzoitika zvemakemikari epurasitiki zvakadai sePolyethylene uye polypropylene.

Iyo mainini main midziyo yekudyidzana yekudyara ndeyePolyethyle (pe), nepo main mredomplese (PE) pombi iri polypropylene (PP), iyo iri thermoplastic resin yakawanikwa ne polymerization ye ethylene. Mune indasitiri, zvinosanganisirawo ethylene uye huwandu hushoma hweKukoshesa zveOlefins. Polyethlene kusanzwisisika, kusanzwisisika, kunonzwa kunge kwakadzikama kupisa kwekushisa (kushanduka kwemakemikari akawanda) Asi polyethylene inokatyamadza zvakanyanya kushushikana kwezvakatipoteredza (makemikari uye michina mhedzisiro) uye ine isina kunaka yekukwira kukwira kurwisa. Zvivakwa zvePolyethlene zvinosiyana kubva kune dzakasiyana siyana kusvika kune dzakasiyana siyana, kunyanya zvichienderana neye molecular chimiro uye density. Nzira dzakasiyana dzekugadzira dzinogona kubereka zvigadzirwa zvine densities dzakasiyana (0.91 ~ 0.96g / cm3). Polyethyle inogona kuongororwa uchishandisa general thermoplastical kuumbwa nzira (ona purasitiki kugadzirisa). Iyo ine huwandu hwakawanda hwekushandisa, zvinonyanya kushandiswa kugadzira mafirimu akaonda, midziyo, monofiling, mafaira, etces Muna 1983, huwandu hwakazara hwekugadzira polyethylene munyika yaive 24.65mt, uye kugona kwesimba rekuvaka raive 3.16MT.

Iyo thermoplastic resin yakawanikwa ne polymerization yePropeylene. Kune matatu ekugadzirisa: isoticc, isina nhumbi, uye syndiottic, ine isotactic sechinhu chikuru mune zvigadzirwa zveindasitiri. Polypropylene inosanganisirawo vaCoplymers yeProfyne uye huwandu hushoma hwetsitsi. Kazhinji imwe semi pachena uye isina ruvara yakasimba, inonhuhwirira uye isiri-ine chepfu. Nekuda kwekugara nguva dzose uye yakakwirira mireza, iyo yekunyungudika yakakwira kusvika 167 ℃, uye iri kupisa. Chigadzirwa icho chinogona kuraswa ne steam, iyo ndiyo yakanyanya kukosha mukana. Iyo density ndeye 0.90G / cm3, ichiita kuti ive yakapurasitiki yepurasitiki. Kudzvinyirira kupokana, kusimba kwesimba kwe 30mpa, uye simba riri nani, kuomarara, uye pachena pane polyethyle. Iko kukanganisa kwakashata kwakasimba-tembiricha zvinokanganisa kuramba uye nyore kuchembera, asi zvinogona kukurirwa nekugadziridzwa uye kuwedzera kweAntioxidants zvakateerana.

Ruvara rwemabhegi ane machena anowanzove chena kana grey chena, isina-chepfu uye isina kugadzikana, uye kazhinji inokuvadza hutano hwevanhu. Kunyangwe ivo vakagadzirwa kubva kune dzakasiyana-siyana emakemikari plassics, vane dziviriro yakasimba yezvemamiriro ekunze uye kudzokorora kuedza;

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