Ukuminyana okuphansi Ifilimu yePolyethylene Ibanga le-QLT04 QLF39
I-Low-density polyethylene (LDPE) iyinhlaka yokwenziwa esebenzisa inqubo yokucindezela okuphezulu nge-polymerization yamahhala ye-ethylene futhi ngenxa yalokho ibizwa nangokuthi "i-polyethylene ephezulu yokucindezela".Njengoba iketango layo lamangqamuzana linamagatsha amaningi amade namafushane, i-LDPE ine-crystalline encane kune-high-density polyethylene (HDPE) futhi ukuminyana kwayo kuphansi.Ifaka ukukhanya, okuguquguqukayo, ukumelana okuhle kokuqhwa kanye nokumelana nomthelela.I-LDPE izinzile kumakhemikhali.Inokumelana okuhle nama-acids (ngaphandle kwama-acid oxidizing aqinile), i-alkali, usawoti, izakhiwo ezinhle kakhulu zokufaka ugesi.Izinga layo lokungena komhwamuko liphansi.I-LDPE ine-fluidity ephezulu kanye nokucutshungulwa okuhle.Ilungele ukusetshenziswa kuzo zonke izinhlobo zezinqubo zokucubungula i-thermoplastic, njengokubunjwa komjovo, ukubumba kwe-extrusion, ukubunjwa kwe-blow, i-rotomolding, i-coating, igwebu, i-thermoforming, i-hot-jet welding kanye ne-thermal welding.
Isicelo
Ibanga lefilimu le-LDPE lisetshenziswa ngokuyinhloko ekukhiqizweni kwefilimu yokupakisha i-blowmolding, ifilimu yezolimo futhi ingaxutshwa ne-linear low-density polyethylene (LLDPE) ukuze kukhiqizwe i-PE eguquliwe.Ngaphezu kwalokho, ingasetshenziselwa ifilimu yokupakisha encipha ukushisa, ifilimu elaminethiweyo, ifilimu eqandisayo, ukupakishwa kwezokwelapha, ifilimu ye-coextrusion enezingqimba eziningi, ifilimu yokupakisha esindayo, ukumbozwa kwamapayipi, ukushelela ikhebula, ulwelwesi kanye negwebu eliphezulu lamakhemikhali.
I-LDPE (QLT04/QLF39) iyifilimu enhle kakhulu ebonisa izinto ezingavuthiwe.
Amapharamitha
Amabanga | I-QLT04 | QLF39 | |
I-MFR | g/10 min | 3.0 | 0.75 |
Ukuminyana | 23℃, g/cm3 | 0.920 | 0.920 |
Inkungu | % | 10 | - |
Amandla Okuqina | I-MPa | 6 | 6 |
Ukwandisa ngesikhathi sekhefu | % | 550 | 550 |
Iphakheji, Isitoreji kanye Nezokuthutha
I-resin ifakwe ezikhwameni ezilukiwe ze-polypropylene ezifakwe ngaphakathi ngefilimu.Isisindo esiphelele singama-25Kg/isikhwama.I-resin kufanele igcinwe endaweni yokugcina impahla, eyomile futhi kude nomlilo kanye nelanga eliqondile.Akufanele inqwabelane endaweni evulekile.Ngesikhathi sokuthutha, umkhiqizo akufanele ubekwe elangeni elinamandla noma imvula futhi akufanele uhanjiswe kanye nesihlabathi, inhlabathi, izinsimbi ezilahliwe, amalahle noma ingilazi.Ukuhamba nezinto ezinobuthi, ezonakalisayo nezivuthayo akuvunyelwe ngokuphelele.