Izinhlobo:

Izikhwama ezilukiwe, Eyaziwa nangokuthi izikhwama zesikhumba sezinyoka. Kunguhlobo lwepulasitiki olusetshenziselwa ukupakishwa. Izinto zayo ezingavuthiwe ngokuvamile izinto ezahlukahlukene zamakhemikhali ezifana ne-polyethylene ne-polypropylene.

Izinto ezisemqoka zokukhiqizwa kwamanye amazwe ziyi-polyethylene (pe), ngenkathi ukukhiqizwa okuyinhloko kwasekhaya kuyinto poypropylene (PP), okuyi-thermoplastic resin etholwe yi-polymerization ye-ethylene. Embonini, kuhlanganisa ne-ethylene kanye nenani elincane lama-copolymers ama-Olefin. I-polyethylene ingenamphundla, i-non-actic, izwakala njenge-wax, inokumelana kahle kwamazinga okushisa okuphansi (izinga lokushisa eliphansi lingafinyelela ku-acid ama-acids, ama-infolsoning acijile), ukufakwa kwamakhemikhali okujwayelekile, ukufakwa kwamanzi okuphansi, kanye nokusebenza okuhle kakhulu ngogesi; Kepha i-polyethylene inanaka kakhulu ekucindezelekeni kwemvelo (imiphumela yamakhemikhali kanye nemishini) futhi inokumelana nokuguga okumpofu. Izakhiwo ze-polyethylene ziyahlukahluka kusuka ezinhlotsheni kuya ezinhlobonhlobo, ikakhulukazi kuya ngesakhiwo samangqamuzana nobunzima. Izindlela ezahlukahlukene zokukhiqiza zingaveza imikhiqizo enobunzima obuhlukile (0.91 ~ 0.96g / CM3). I-polyethylene ingacutshungulwa kusetshenziswa izindlela ezijwayelekile ze-thermoplastic zokubumba (bheka ukucubungula kwepulasitiki). Inobubanzi bokusebenzisa, ikakhulukazi okusetshenziselwa ukukhiqiza amafilimu amancanyana, iziqukathi, amapayimane, i-monofilay, i-monofilament, izidingo zansuku zonke, njll., Ukukhiqizwa kwe-polyethylene kuthuthukiswe ngokushesha, kubangelwa yi-1/4 yokukhiqizwa kwepulasitiki okuphelele. Ngo-1983, inani eliphelele lokukhiqiza le-polyethylene emhlabeni lalingama-24.65mt, futhi amandla esitshalo sokwakha lalingu-3.16mt.

I-thermoplastic resin etholwe yi-polymerization ye-propylene. Kunokuhlelwa kathathu: i-isotactic, okungahleliwe, ne-syndooticactic, nge-isotactic njengengxenye eyinhloko emikhiqizweni yezimboni. I-Polypropylene ifaka ne-copolymers ye-propylene nenani elincane le-ethylene. Imvamisa i-Semi esobala futhi engenamibala, ingenamqondo futhi ayinobuthi. Ngenxa yesakhiwo sayo esivamile kanye nezinga eliphakeme lokuklanywa, indawo yokuncibilika iphakeme njenge-167 ℃, futhi imelana nokushisa. Umkhiqizo ungabulawa amagciwane nguSteam, okuyinzuzo yayo evelele. I-density ingu-0.90g / CM3, okwenza kube yiplasitiki ekhanyayo yendawo yonke. Ukuphikiswa kokugqwala, amandla ashubile angu-30mpa, namandla angcono, ukuqina, kanye nokwethula kune-polyethylene. Ukungabi nabunzima kungukumelana nomthelela wokushisa okuphansi okuphansi kanye nokuguga okulula, kepha kunganqotshwa ukuguqulwa kanye nokungezwa kwama-antioxidants ngokulandelana.

Umbala wezikhwama ezilukiwe ngokuvamile mhlophe noma umpunga omhlophe, ongeyena ubuthi futhi awunangqondo, futhi ngokuvamile ayingozi empilweni yabantu. Yize zenziwa kusuka kumakhemikhali ahlukahlukene amakhemikhali, zinokuvikelwa okuqinile kwemvelo nemizamo yokuvuselela kabusha;

Sebenzisa: