Umbono ojwayelekile we-plastic masterbatch
I-Plastiki masterbatchkungase kubonakale njengama-polymersmasterbatch.Ama-polymers angenziwa ngezinhlobo eziningi ezahlukene zama-'mers' amele amayunithi amakhemikhali.Amayunithi amaningi amakhemikhali atholakala kuwoyela noma amanye ama-hydrocarbon.Ama-hydrocarbon anjengoba avela, enziwe nge-hydrogen ne-carbon.Ngakho-ke, amapulasitiki enziwe (ikakhulukazi) i-hydrogen ne-carbon ahlanganiswe ndawonye ukuze akhe ama-mers (njenge-ethylene noma i-propylene) bese lawa ma-mers ehlangana ukuze akhe amaketanga nalapho la maketango esede ngokwanele ukuba abe 'i-poly' ngokuvamile lapho okungenani. I-100 yama-mers ixhumene ndawonye, sithola ukuba ne-plastic/polymeric material.
I-Plastiki masterbatchabomndeni we-thermoplastic bakhiwe ama-molecule amaketango amade ahlanganisa ikakhulukazi i-carbon ne-hydrogen ebizwa ngokuthi ama-polymers.Leli gama lihlanganisa elithi “poly” libhekisela kwabaningi kanye nelithi “mer” libhekisela kumayunithi okuphinda amangqamuzana ahlanganiswe ndawonye.Izingxenye ze-mer zezinhlobo ezahlukene zamapulasitiki, amandla amabhondi e-molecular abambe ama-mers komunye nomunye kanye nobude bamaketanga e-polymer yizinqumo eziyinhloko zezakhiwo zepulasitiki.Amanye amapulasitiki ashintshana ngaphezu kohlobo olulodwa lwamayunithi e-mer.
Ipulasitikimasterbatchzomndeni we-thermoset kuyilapho zifana nalezi ezichazwe ngenhla zinokuxhumana okuhlukile phakathi kwama-mers okuhlanganisa izixhumanisi eziwelayo eziwanika izakhiwo ezihlukene okuhlanganisa ezimweni ezizayo amandla okushisa aphezulu kanye nokungakwazi ukuncibilika ngaphambi kokubola njengoba izinga lokushisa likhuphuka.
Ukudiliza i-plastic masterbatch
Okuningi kwei-plastic masterbatchiqhekekile ama-crackers!
Ama-Steam crackers ngokuyinhloko.Kodwa hhayi kuphela.
Kukhona inqwaba ye-thermoplastics etholakala kumpahla eluhlaza ebizwa ngokuthi i-ethylene.Futhi i-ethylene ikhiqizwa ngezindlela ezihlukahlukene, ikakhulukazi kusuka kumafutha noma igesi feedstock.
Enye indlela edume kakhulu ukufaka i-feedstock ku-steam cracker kanye nemiphumela ye-ethylene, kanye nezinye izinto futhi.I-ethylene ibe i-polymerized ibe i-polyethylene noma i-polypropylene ikakhulukazi kodwa hhayi kuphela.I-PVC, i-PS, i-PET, i-butadiene nayo yenziwa.
Nansi isiqephu sendatshana esichaza lokhoi-plastic masterbatchokungcono kakhulu:
“I-ethylene iyindawo yokuqala emikhiqizweni emine evuthiwe: i-polyethylene (izinhlobo ezintathu: i-LDPE, i-LLDPE, ne-HDPE), i-ethylene oxide, i-ethylene dichloride (isandulela se-vinyl chloride monomer), ne-ethylbenzene (isandulela se-styrene).Ivolumu emincane, imikhiqizo ekhethekile kakhulu ihlanganisa i-α-olefin eqondile, i-vinyl acetate monomer, ne-ethanol yokwenziwa, njll.
Okulandelayo uhlu lwe-ethylene edumilemasterbatchimikhiqizo:
| I-PVA Poly(vinyl acetate), i-poly(vinyl alcohol) | I-PET Poly (i-ethylene terephthalate) |
| I-PVC Poly (vinyl chloride) | I-PS Polystyrene |
| I-LLDPE I-polyethylene ene-low-density ephansi | I-PEG Poly (ethylene glycol) |
| I-LDPE I-polyethylene enezinga eliphansi | I-HDPE High-density polyethylene |
Umzila ohamba phambili wokukhiqiza oya ku-ethylene ukudla kwegesi okuqhekeka umusi (i-ethane, i-propane, noma i-butane) noma i-liquid feedstocks (i-naphtha noma uwoyela wegesi).Ezingeni lokushisa eliphezulu kakhulu elisuka ku-850 degrees Celsius noma ngaphezulu kakhulu, lolo chungechunge oluhlelekile lokuqhekezwa kwemishini okungeyona i-catalytic luqalisiwe.I-ethylene ingumkhiqizo ohlosiwe;kodwa amanye amangqamuzana okwakha abalulekile, njenge-propylene, i-butadiene, ne-benzene, akhiqizwa ngokubambisana.
Isivuno se-coproduct ngayinye ngokuvamile siwumsebenzi we-feedstock esetshenziswayo.Ukuqhekeka kwe-ethane kunikeza cishe akukho mikhiqizo;kodwa i-naphtha eqhekekayo ihlinzeka ngenani elikhulu le-propylene, i-butadiene, ne-benzene.Njengoba kubukwa emhlabeni wonke, ukuqhekeka okushisayo kungabonakala njengenye yezinsiza ezibaluleke kakhulu ze-butadiene, i-propylene kanye nensiza ehamba phambili ehamba phambili ye-benzene.Isithombe esilandelayo sibonisa isikimu sochungechunge oluhlelekile lokuqhekeka kokushunqisa ngomshini ngendlela elula kakhulu.
Isikhathi sokuthumela: Apr-07-2022