Ukuhlelwa kwePolyethylene
Ulwahlulo lwe-polyethylene
I-Polyethylene ihlukaniswe ibe yi-polyethylene ephezulu (i-HDPE), i-polyethylene ephantsi (i-LDPE) kunye ne-linear low density polyethylene (LLDPE) ngokwendlela ye-polymerization, ubunzima be-molecular kunye nesakhiwo sekhonkco.
LDPE
Iinkcazelo ngeempawu: azinancasa, azinavumba, azinatyhefu, umphezulu odakumbileyo, amasuntswana e-waxy amhlophe anobisi, ukuxinana malunga ne-0.920 g/cm3, indawo yokunyibilika 130℃～145℃. Ayinyibiliki emanzini, inyibilika kancinane kwi-hydrocarbons, njl.njl. Iyakwazi ukumelana nokhukuliseko lwee-asidi ezininzi kunye ne-alkali, inokufunxeka kwamanzi aphantsi, isenakho ukugcina ukuguquguquka kumaqondo obushushu aphantsi, kwaye inokufakwa okuphezulu kombane.
Inkqubo yokuvelisa:
Zimbini iintlobo zendlela yoxinzelelo oluphezulu kunye nendlela yeketile. Ukuze kuncitshiswe ubushushu bokusabela kunye noxinzelelo, inkqubo ye-tubular generalI-ly ithatha i-low-temperature high-activity initiator ukuze iqalise inkqubo ye-polymerization, i-ethylene ephezulu yokucoca isetyenziswe njengeyona nto iphambili, ipropylene, ipropane, njl. I-polymerization yenziwa phantsi kweemeko ze-330 ° C kunye ne-150-300MPa. Ipolymer etyhidiweyo eqalisa i-polymerization kwi-reactor kufuneka ipholiswe kwaye yahlulwe kuxinzelelo oluphezulu, uxinzelelo oluphakathi kunye noxinzelelo oluphantsi. Emva kokwahlula, ithunyelwa kwi-inlet ye-high-pressure (30 MPa) i-compressor, ngelixa i-gas ejikelezayo yoxinzelelo oluphantsi ipholile kwaye ihlukaniswe kwaye ithunyelwe kwi-compressor ephantsi (0.5 MPa) yokuphinda isetyenziswe, ngelixa i-polyethylene etyhidiweyo. ithunyelwa kwigranulator emva koxinzelelo oluphezulu kunye nokwahlukana koxinzelelo oluphantsi. Kwi-granulation emanzini, ngexesha le-granulation, amashishini anokongeza izongezo ezifanelekileyo ngokwemimandla eyahlukeneyo yesicelo, kwaye iigranules zipakishwe kwaye zithunyelwe.
Se benzisa:
Iindlela zokulungisa ezifana nokubumba inaliti, ukubunjwa kwe-extrusion, kunye nokubunjwa kokuvuthela kungasetyenziswa. Isetyenziswa kakhulu njengezolimoral ifilimu, ifilimu yokupakisha yamashishini, ifilimu yokupakisha amayeza kunye nokutya, iinxalenye zoomatshini, iimfuno zemihla ngemihla, izinto zokwakha, ucingo, ukugqunywa kwentambo, ukugquma kunye nephepha lokwenziwa.
IXESHA
Iipropati: Ngenxa yokuba ii-molecular structures ze-LLDPE kunye ne-LDPE ngokucacileyo zahlukile, iipropati nazo zahlukile. Xa kuthelekiswa ne-LDPE, i-LLDPE inokumelana noxinzelelo olubalaseleyo lwezendalo kunye nokugqunywa kombane, ukumelana nobushushu obuphezulu, ukuxhathisa impembelelo kunye nokuchasa ukugqobhoza.
Inkqubo yokuvelisa:
I-resin ye-LLDPE iveliswa ubukhulu becala ngezixhobo ze-polyethylene ezixineneyo, kwaye iinkqubo ezimele imveliso yinkqubo ye-Innovene kunye nenkqubo ye-Unipol ye-UCC.
Se benzisa:
Ngokubumba inaliti, i-extrusion, ukubumba ukuvuthela kunye nezinye iindlela zokubumba, ukuveliswa kweefilimu, iimfuno zemihla ngemihla, imibhobho, iingcingo kunye neentambo, njl.
HDPE
Iipropati: Natural, amasuntswana ecylindrical okanye oblate, amasuntswana agudileyo, ubungakanani bamasuntswana kufuneka bube yi-2 mm ~ 5 mm kulo naliphi na icala, kungabikho ukungcola komatshini, Thermoplastic. Ipowder ingumgubo omhlophe, kwaye umkhiqizo ofanelekileyo uvumelekile ukuba ube nephuzi elincinane umbala. Ayinyibiliki kwizinyibilikisi eziqhelekileyo kubushushu begumbi, kodwa inokudumba kwi-aliphatic hydrocarbons, iihydrocarbons ezinevumba elimnandi kunye neehalogenated hydrocarbons xa zidibene ixesha elide, kwaye zinyibilika kancinane kwitoluene kunye ne-acetic acid kumaqondo obushushu angaphezu kwama-70 °C. I-oxidation iyenzeka xa kushushu emoyeni kwaye phantsi kweempembelelo zokukhanya kwelanga. Ukumelana ne-asidi eninzi kunye nokhukuliseko lwe-alkali. Inokufunxeka kwamanzi aphantsi, isenako ukugcina ukuguquguquka kwiqondo lobushushu eliphantsi, kwaye inobushushu obuphezulu bombane.
Inkqubo yokuvelisa:
Iinkqubo ezimbini zokuvelisa ziyamkelwa: indlela yesigaba segesi kunye nendlela ye-slurry.
Se benzisa:
Ukusebenzisa ukubunjwa kwenaliti, ukubunjwa kokuvuthela, ukubunjwa kwe-extrusion, i-rotomolding kunye nezinye iindlela zokubumba ukuvelisa iimveliso zefilimu, iimfuno zemihla ngemihla kunye nokusetyenziswa kwemizi-mveliso yeesayizi ezahlukeneyo zezikhongozeli ezingenanto, imibhobho, iiteyipu zekhalenda kunye nokubopha iiteyiphu zokupakisha, iintambo, iminatha yokuloba kunye nemicu ephothiweyo, Ucingo kunye nentambo njl.
Ukuhlelwa kwePolyethylene