Iindaba

Igama elithi “Metallocene” libhekisa kwiikhompawundi ze-organic metal coordination ezenziwe zii-transition metals (ezifana ne-zirconium, i-titanium, i-hafnium, njl.njl.) kunye ne-cyclopentadiene. I-Polypropylene eyenziwe ngee-catalysts ze-metallocene ibizwa ngokuba yi-metallocene polypropylene (mPP).

Iimveliso ze-Metallocene polypropylene (mPP) zinokuhamba okuphezulu, ubushushu obuphezulu, umqobo ophezulu, ukucaca okugqwesileyo kunye nokucaca, ivumba eliphantsi, kunye nokusetyenziswa okunokwenzeka kwiFibers, Cast Film, Injection Molding, Thermoforming, Medical, kunye nezinye. Ukuveliswa kwe-metallocene polypropylene (mPP) kubandakanya amanyathelo aliqela abalulekileyo, kubandakanya ukulungiswa kwe-catalyst, i-polymerization, kunye nokulungiswa emva koko.

1. Ukulungiswa kweCatalyst:

Ukukhethwa kweMetallocene Catalyst: Ukukhethwa kwe-metallocene catalyst kubaluleke kakhulu ekumiseleni iimpawu ze-mPP ephumayo. Ezi catalysts zihlala ziquka ii-transition metals, ezifana ne-zirconium okanye i-titanium, ezibekwe phakathi kwe-cyclopentadienyl ligands.

Ukongeza iCocatalyst: Ii-catalyst zeMetallocene zihlala zisetyenziswa kunye ne-cocatalyst, ngokuqhelekileyo i-compound esekwe kwi-aluminium. I-cocatalyst ivuselela i-catalyst ye-metallocene, ivumela ukuba iqalise i-polymerization reaction.

2. Ukwenziwa kwePolymerization:

Ukulungiswa kweFoodstock: Ipropylene, i-monomer ye-polypropylene, idla ngokusetyenziswa njenge-feedstock ephambili. Ipropylene iyacocwa ukuze kususwe ukungcola okunokuphazamisana nenkqubo ye-polymerization.

Useto lweReactor: I-polymerization reaction yenzeka kwi-reactor phantsi kweemeko ezilawulwa ngononophelo. Useto lwe-reactor luquka i-metallocene catalyst, i-cocatalyst, kunye nezinye izongezo ezifunekayo kwiimpawu ze-polymer ezifunekayo.

Iimeko zePolymerization: Iimeko zokusabela, ezinje ngobushushu, uxinzelelo, kunye nexesha lokuhlala, zilawulwa ngononophelo ukuqinisekisa ubunzima beemolekyuli kunye nesakhiwo sepolymer esifunekayo. Ii-catalysts zeMetallocene zivumela ulawulo oluchanekileyo kwezi parameters xa kuthelekiswa nee-catalysts zemveli.

3. I-Copolymerization (Ukhetho):

Ukufakwa kweeCo-monomers: Kwezinye iimeko, i-mPP inokwenziwa i-copolymer kunye nezinye ii-monomers ukuze kuguqulwe iipropati zayo. Ii-co-monomers eziqhelekileyo ziquka i-ethylene okanye ezinye ii-alpha-olefins. Ukufakwa kwee-co-monomers kuvumela ukwenziwa ngokwezifiso kwe-polymer kwizicelo ezithile.

4. Ukupheliswa kunye nokucima:

Ukupheliswa kweNgxaki: Nje ukuba i-polymerization igqityiwe, i-reaction iyapheliswa. Oku kudla ngokufezekiswa ngokungenisa i-agent yokuphelisa esabela kunye neziphelo zetyathanga le-polymer esebenzayo, imisa ukukhula okungakumbi.

Ukucima: Emva koko i-polymer ipholiswa okanye icinywe ngokukhawuleza ukuze kuthintelwe ezinye iintshukumo kunye nokuqinisa i-polymer.

5. Ukubuyiselwa kwePolymer kunye nokuLungiswa emva kokuSebenza:

Ukwahlulwa kwePolymer: I-polymer yahlulwe kumxube we-reaction. Ii-monomers ezingaphendulwanga, ii-catalyst residues, kunye nezinye iimveliso eziphumayo zisuswa ngeendlela ezahlukeneyo zokwahlulwa.

Amanyathelo Okulungisa Emva Kokusetyenzwa: I-mPP ingadlula kumanyathelo ongezelelweyo okucubungula, anje ngokukhupha, ukuhlanganisa, kunye nokufaka ipelletization, ukuze kufezekiswe imo kunye neempawu ezifunekayo. La manyathelo avumela ukufakwa kwezongezo ezifana nee-slip agents, ii-antioxidants, iziqinisi, ii-nucleating agents, ii-colorants, kunye nezinye izongezo zokucubungula.

Ukuphucula i-mPP: Ukuqonda nzulu iindima eziphambili zokucubungula izongezo

Iiarhente zokutyibiliza: Ii-Slip agents, ezifana nee-long-chain fatty amides, zihlala zongezwa kwi-mPP ukunciphisa ukungqubana phakathi kwee-polymer chains, ukuthintela ukunamathela ngexesha lokucubungula. Oku kunceda ukuphucula iinkqubo zokukhupha kunye nokubumba.

Izinto eziphucula ukuhamba kwamanzi:Izinto zokuphucula ukuhamba kwamanzi okanye izixhobo zokulungisa, ezifana neewax ze-polyethylene, zisetyenziselwa ukuphucula ukuhamba kwamanzi okunyibilikayo kwe-mPP. Ezi zongezo zinciphisa i-viscosity kwaye zonyusa amandla e-polymer okuzalisa imingxunya yesikhunta, nto leyo ebangela ukuba kube lula ukuyisebenzisa.

Ii-Antioxidants:

Izinzisi: Ii-Antioxidants zezona zongezo zibalulekileyo ezikhusela i-mPP ekuwohlokeni ngexesha lokucubungula. Ii-phenols ezithintelweyo kunye nee-phosphites zihlala zisetyenziswa njengezinzisi ezithintela ukwenziwa kwee-free radicals, zithintela ukonakala kobushushu kunye ne-oxidative.

Iiarhente zeNucleating:

Ii-nucleating agents, ezifana ne-talc okanye ezinye ii-inorganic compounds, zongezwa ukukhuthaza ukwakheka kwesakhiwo sekristale esicwangcisiweyo ngakumbi kwi-mPP. Ezi zongezo zongeza iipropati zoomatshini zepolymer, kubandakanya ukuqina kunye nokumelana nempembelelo.

Izinto zokufaka imibala:

Iidayi kunye neePigments: Izinto ezifaka imibala zihlala zifakwa kwi-mPP ukuze kufumaneke imibala ethile kwimveliso yokugqibela. Iidayi kunye neePigments zikhethwa ngokusekelwe kumbala ofunekayo kunye neemfuno zokusetyenziswa.

Izilungisi zeMpembelelo:

Ii-Elastomers: Kwizicelo apho ukumelana nempembelelo kubalulekile, izilungisi zempembelelo ezifana nerabha ye-ethylene-propylene zingongezwa kwi-mPP. Ezi zilungisi ziphucula ukuqina kwepolymer ngaphandle kokulahla ezinye iimpawu.

Izinto ezihambelanayo:

Ii-Maleic Anhydride Grafts: Ii-Compatibilizers zingasetyenziselwa ukuphucula ukuhambelana phakathi kwe-mPP kunye nezinye ii-polymers okanye izongezo. Ii-Maleic anhydride grafts, umzekelo, zinokuphucula ukunamathelana phakathi kwezinto ezahlukeneyo ze-polymer.

Iiarhente zokutyibilika kunye nezokuthintela ukutyibilika:

Iiarhente zokutyibilika: Ukongeza ekunciphiseni ukungqubana, iiarhente zokutyibilika zingasebenza njengeearhente zokulwisana nokutyibilika. Iiarhente zokulwisana nokutyibilika zithintela ukunamathelana kwefilimu okanye umphezulu wephepha ngexesha lokugcina.

(Kubalulekile ukuqaphela ukuba izongezo ezithile zokucubungula ezisetyenziswa kwi-mPP formulation zinokwahluka ngokusekwe kwisicelo esicetywayo, iimeko zokucubungula, kunye neempawu zezinto ezifunwayo. Abavelisi bakhetha ngononophelo ezi zongezo ukuze bafezekise ukusebenza ngokugqibeleleyo kwimveliso yokugqibela. Ukusetyenziswa kwee-catalysts ze-metallocene kwimveliso ye-mPP kubonelela ngenqanaba elongezelelweyo lolawulo kunye nokuchaneka, okuvumela ukufakwa kwezongezo ngendlela enokulungiswa kakuhle ukuhlangabezana neemfuno ezithile.)

Ukusebenza kakuhle kokuvula丨Izisombululo Ezintsha ze-mPP: Indima Yezongezo Ezintsha Zokucubungula, Oko abavelisi be-mPP abafanele bakwazi!

I-mPP ivele njenge-polymer eguqukayo, enika iipropati eziphuculweyo kunye nokusebenza okuphuculweyo kwizicelo ezahlukeneyo. Nangona kunjalo, imfihlo yempumelelo yayo ayikho kuphela kwiimpawu zayo ezisisiseko kodwa ikwasekusetyenzisweni kwezicwangciso zezongezo zokucubungula eziphambili.

I-SILIMER 5091Ingenisa indlela entsha yokuphakamisa ukuqhubekeka kokusebenza kwe-metallocene polypropylene, inikezela ngenye indlela enomtsalane kunezongezo zendabuko zePPA, kunye nezisombululo zokuphelisa izongezo ezisekelwe kwi-fluorine phantsi kwemiqathango ye-PFAS.

I-SILIMER 5091yi-Fluorine-Free Polymer Processing Additive yokukhupha izinto ze-polypropylene kunye ne-PP njengomthwali oqaliswe yi-SILIKE. Yimveliso ye-polysiloxane masterbatch eguqulweyo yendalo, enokufudukela kwizixhobo zokucubungula kwaye ibe nefuthe ngexesha lokucubungula ngokusebenzisa isiphumo esihle kakhulu sokuthambisa sokuqala se-polysiloxane kunye nesiphumo se-polarity samaqela aguqulweyo. Inani elincinci ledosi linokuphucula ngokufanelekileyo ukugeleza kunye nokuqhubekeka kokusebenza, linciphise ukuvuza ngexesha lokukhupha, kwaye liphucule imeko yesikhumba se-shark, esetyenziswa kakhulu ukuphucula ukuthambisa kunye neempawu zomphezulu we-plastic extrusion.

NiniUncedo lokuCwangcisa iPolymer yasimahla yePFAS (PPA) SILIMER 5091Ifakwe kwi-metallocene polypropylene (mPP) matrix, iphucula ukuhamba kwe-mPP, inciphisa ukungqubana phakathi kweetyathanga zepolymer, kwaye ithintele ukunamathela ngexesha lokucubungula. Oku kunceda ukuphucula iinkqubo zokukhupha kunye nokubumba, ukwenza kube lula iinkqubo zemveliso ezithambileyo kunye negalelo ekusebenzeni kakuhle ngokubanzi.

Lahla isongezo sakho esidala sokucubungula,SILIKE Fluorine-free PPA SILIMER 5091yiloo nto uyidingayo!