[Iintlobo zeebhegi ezilukiweyo]

Imveliso yangaphandle ikakhulu i-polyethylene (PE), imveliso yasekhaya ikakhulu i-polypropylene (PP), luhlobo lwe-resin thermoplastic eveliswa yi-ethylene polymerization. Kwimizi-mveliso, ikwabandakanya iicopolymers ze-ethylene ezinexabiso elincinci le-olefin. I-Polyethylene ayinavumba, ayinayo ityhefu, ivakalelwa njenge-wax, inokumelana nobushushu obuphantsi kakhulu (elona qondo liphantsi lokusetyenziswa liyakwazi ukuya kuthi ga -70 ~ -100 ℃), uzinzo oluhle lwekhemikhali, lunokumelana nokhukuliseko oluninzi lwe-asidi kunye ne-alkali (akukho oxidation ye-asidi), ubushushu begumbi obunganyibilikiyo kwizinyibilikisi ngokubanzi, ukufunxa amanzi amancinci, ukusebenza ngokugqwesileyo kombane; Kodwa i-polyethylene inovelwano kuxinzelelo lwendalo (iikhemikhali kunye neempembelelo zoomatshini) kwaye inokuchasana kakubi nokuguga kwe-thermal. Iipropati ze-polyethylene ziyahlukahluka kwiintlobo ukuya kwiintlobo, ngokukodwa kuxhomekeke kwisakhiwo se-molecular and density. Iimveliso ezinobuninzi obuhlukeneyo (0.91 ~ 0.96g / cm3) zinokufumaneka ngokusebenzisa iindlela ezahlukeneyo zokuvelisa. I-polyethylene inokucutshungulwa yindlela yokubumba ye-thermoplastic ngokubanzi (jonga ukusetyenzwa kweplastiki). Isetyenziselwa ngokubanzi ukuveliswa kwefilimu, isitya, umbhobho, ucingo olulodwa, ucingo kunye nekhebula, iimfuno zemihla ngemihla, njl., kwaye zingasetyenziswa njengezinto eziphakamileyo zokugquma i-TV, i-radar, njl. Ngo-1983, umthamo wemveliso we-polyethylene wawuyi-24.65Mt, kwaye umthamo wesityalo esakhiwayo wawuyi-3.16Mt.

Iipolypropylene (PP)

I-resin ye-thermoplastic elungiselelwe yi-polymerization yepropylene. Kukho ukucwangciswa okuthathu kweemveliso ze-isochronous, ezingalawulwayo kunye ne-interchronous, kunye neemveliso ze-isochronous zizona zixhobo eziphambili zeemveliso zoshishino. I-Polypropylene iquka i-copolymers yepropylene kunye nenani elincinci le-ethylene. Ngokwesiqhelo translucent eqinileyo, engenavumba, ayinabungozi. Ngenxa yokuba ulwakhiwo lucocekile kwaye lukhazimliswe kakhulu, ngoko ke indawo yokunyibilika ukuya kuthi ga kwi-167 ℃, ukuxhathisa ubushushu, iimveliso zinokusetyenziselwa ukubulala iintsholongwane ngomphunga ziinzuzo zayo ezibalaseleyo. Ngoxinaniso lwe-0.90g/cm3, yeyona plastiki ilula kwindalo iphela. Ukumelana nokubola, amandla okuqina angama-30MPa, amandla, ukuqina kunye nokungafihli ngcono kune-polyethylene. Ukungonakali kukuchasana kwempembelelo yobushushu obuphantsi kunye nokuguga okulula, okunokoyiswa ngokuguqulwa kunye nokongezwa kwe-antioxidant ngokulandelanayo.

Umbala webhegi ephothiweyo umhlophe okanye ungwevu omhlophe, awunatyhefu kwaye awunancasa, unobungozi obuncinci kumzimba womntu, nangona wenziwa ziiplastiki zeekhemikhali ezahlukeneyo, kodwa ukukhuselwa kwayo kokusingqongileyo kunamandla, kwaye amandla okuphinda asetyenziswe makhulu;

Iingxowa ezilukiweyo zisetyenziswa kakhulu, ikakhulu zisetyenziselwa ukupakisha kunye nokupakishwa kwamanqaku ahlukeneyo, asetyenziswa kakhulu kwishishini;

Isingxobo esilukiweyo seplastiki senziwe ngentlaka yepolypropylene njengeyona mathiriyeli ikrwada, ethi ikhutshelwe yolulwe ibe yisilika emcaba, emva koko ilukwe kwaye yenze ingxowa.

Ingxowa ehlanganisiweyo yeplastiki ephothiweyo isekelwe kwilaphu elilukiweyo leplastiki, elenziwe ngendlela yokuqengqeleka.

Olu chungechunge lweemveliso zisetyenziselwa ukupakisha umgubo okanye izinto eziqinileyo zegranular kunye namanqaku aguquguqukayo. Ingxowa yeplastiki ehlanganisiweyo yohlulwe ibe zimbini kwingxowa enye kunye nezintathu kwingxowa enye ngokwendlela yokwenziwa kwezinto eziphambili.

Ngokwendlela yokuthunga, inokwahlulwa ibe yingxowa engezantsi yokuthunga, isikhwama esisezantsi sokuthunga, ukufaka ipokotho kunye nokudibanisa isikhwama sokuthunga.

Ngokobubanzi obusebenzayo besikhwama, inokwahlulwa ibe yi-350, 450, 500, 550, 600, 650 kunye ne-700mm. Iinkcukacha ezikhethekileyo ziya kuvunyelwana ngawo omabini amaqela.