Imveliso yangaphandle ikakhulu yi-polyethylene (PE), imveliso yasekhaya ikakhulu yi-polypropylene (PP), luhlobo lwe-thermoplastic resin eveliswa yi-ethylene polymerization. Kwimizi-mveliso, ikwaquka ii-copolymers ze-ethylene ezine--olefin encinci. I-Polyethylene ayinavumba, ayinatyhefu, ivakala ngathi yi-wax, inokumelana okuhle kakhulu nobushushu obuphantsi (ubushushu obuphantsi bokusetyenziswa bunokuba yi--70 ~ -100℃), uzinzo oluhle lweekhemikhali, inokumelana nobuninzi be-asidi kunye nokukhukuliseka kwe-alkali (akukho oxidation ye-asidi), ubushushu begumbi abunyibiliki kwizinyibilikisi eziqhelekileyo, ukufunxwa kwamanzi amancinci, ukusebenza kakuhle kobushushu bombane; Kodwa i-polyethylene inovelwano kwiingcinezelo zokusingqongileyo (iikhemikhali kunye neziphumo zoomatshini) kwaye inokumelana kakubi nokuguga kobushushu. Iipropati ze-polyethylene ziyahluka ukusuka kwiintlobo ngeentlobo, ikakhulu kuxhomekeke kwisakhiwo se-molecular kunye noxinano. Iimveliso ezinoxinano olwahlukileyo (0.91 ~ 0.96g/cm3) zinokufunyanwa ngokusebenzisa iindlela ezahlukeneyo zemveliso. I-Polyethylene inokucutshungulwa ngendlela yokubumba ye-thermoplastic ngokubanzi (jonga ukucubungula iplastiki). Isetyenziswa kakhulu ekwenziweni kweefilimu, isitya, ipayipi, ucingo olunye, ucingo kunye nentambo, izinto ezifunekayo imihla ngemihla, njl.njl., kwaye ingasetyenziswa njengezixhobo zokukhusela iiTV, iradar, njl.njl. Ngophuhliso lweshishini le-petrochemical, imveliso ye-polyethylene iye yaphuhliswa ngokukhawuleza, imveliso emalunga ne-1/4 yemveliso iyonke yeplastiki. Ngo-1983, umthamo wemveliso iyonke ye-polyethylene yayiyi-24.65Mt, kwaye umthamo wesityalo esakhiwayo yayiyi-3.16Mt.
I-Polypropylene (PP)
I-resin ye-thermoplastic elungiselelwe yi-polymerization ye-propylene. Kukho iindlela ezintathu zokwenziwa kweemveliso ze-isochronous, ezingalawulwayo kunye nezixubeneyo, kwaye iimveliso ze-isochronous zezona zinto ziphambili kwiimveliso zoshishino. I-Polypropylene ikwaquka ii-copolymers ze-propylene kunye nenani elincinci le-ethylene. Ngokwesiqhelo i-translucent ayinambala, ayinavumba ayinatyhefu. Ngenxa yokuba isakhiwo sicocekile kwaye sikristale kakhulu, ngoko ke indawo yokunyibilika ukuya kuthi ga kwi-167℃, ukumelana nobushushu, iimveliso zingasetyenziswa ukubulala iintsholongwane ngomphunga ziingenelo zayo ezibalaseleyo. Ngoxinano lwe-0.90g/cm3, yeyona plastiki ilula kakhulu. Ukumelana nokugqwala, amandla okutyhafa angama-30MPa, amandla, ukuqina kunye nokucaca zingcono kune-polyethylene. Ingxaki kukuxhathisa impembelelo yobushushu obuphantsi kunye nokuguga okulula, okunokoyiswa ngokuguqulwa kunye nokongezwa kwe-antioxidant ngokulandelelana.
Umbala wengxowa elukiweyo ngokubanzi umhlophe okanye ungwevu omhlophe, awunatyhefu kwaye awunancasa, ngokubanzi awunabungozi kangako emzimbeni womntu, nangona wenziwe ngeeplastiki ezahlukeneyo zeekhemikhali, kodwa ukhuseleko lwayo lokusingqongileyo lunamandla, kwaye amandla okuphinda kusetyenziswe kwakhona makhulu;
Iingxowa ezilukiweyo zisetyenziswa kakhulu, ikakhulu zisetyenziselwa ukupakisha nokupakisha izinto ezahlukeneyo, zisetyenziswa kakhulu kushishino;
Ingxowa elukiweyo yeplastiki yenziwe nge-polypropylene resin njengeyona nto iphambili ekrwada, ekhutshwayo ize yolulwe ibe yisilika esicaba, emva koko ilukiwe ize yenziwe ngeengxowa.
Ingxowa elukiweyo yeplastiki edityanisiweyo isekelwe kwilaphu elukiweyo leplastiki, elenziwe ngendlela yokuqengqeleka.
Olu luhlu lweemveliso lusetyenziselwa ukupakisha umgubo okanye izinto eziqinileyo ezibunjiweyo kunye nezinto eziguquguqukayo. Ingxowa elukiweyo yeplastiki edityanisiweyo yahlulwe yaba ziingxowa ezimbini ezikwi-in-one kunye neengxowa ezintathu ezikwi-in-one ngokwendlela equlathe ngayo izinto eziphambili.
Ngokwendlela yokuthunga, inokwahlulwahlulwa ibe yingxowa esezantsi yokuthunga, ingxowa esezantsi yokuthunga, ipokotho yokufaka kunye nengxowa yokuthunga yokubopha.
Ngokobubanzi obusebenzayo bengxowa, ingahlulwa ibe yi-350, 450, 500, 550, 600, 650 kunye ne-700mm. Imigaqo ekhethekileyo iya kuvunyelwana ngamaqela omabini.
Ixesha lokuthumela: Sep-28-2020