Iindaba

"I-Metallocene" ibhekisela kwi-organic metal coordination compounds eyenziwe yintsimbi yenguqu (efana ne-zirconium, i-titanium, i-hafnium, njl.) kunye ne-cyclopentadiene. I-Polypropylene eyenziwe nge-metallocene catalysts ibizwa ngokuba yi-metallocene polypropylene (mPP).

Iimveliso ze-Metallocene polypropylene (mPP) zinokuhamba okuPhezulu, ukushisa okuphezulu, umqobo ophezulu, ukucaca okucacileyo kunye nokuNgafihli, ivumba eliphantsi, kunye nokusetyenziswa okunokwenzeka kwiiFibers, iFilimu yeCast, i-Injection Molding, i-Thermoforming, i-Medical, kunye nabanye. Ukuveliswa kwe-metallocene polypropylene (mPP) kubandakanya amanyathelo abalulekileyo amaninzi, kubandakanywa ukulungiswa kwe-catalyst, i-polymerization, kunye ne-post-processing.

1. Ukulungiselela i-Catalyst:

Ukukhethwa kwe-Metallocene Catalyst: Ukukhethwa kwe-metallocene catalyst kubaluleke kakhulu ekunqumeni iipropati zesiphumo se-mPP. Ezi zixhobo zibandakanya iintsimbi eziguqukayo, ezifana ne-zirconium okanye i-titanium, efakwe phakathi kwe-cyclopentadienyl ligands.

I-Cocatalyst Addition: I-Metallocene catalysts isoloko isetyenziselwa kunye ne-cocatalyst, ngokuqhelekileyo i-aluminium-based based compound. I-cocatalyst yenza i-catalyst ye-metallocene, ivumela ukuba iqalise ukusabela kwe-polymerization.

2. Ukwenziwa kwePolymerization:

ULungiselelo lwe-Feedstock: Ipropylene, imonomer yepolypropylene, iqhele ukusetyenziswa njengesona sondlo siphambili. Ipropylene ihlanjululwe ukususa ukungcola okunokuphazamisa inkqubo ye-polymerization.

Ukuseta i-Reactor: Ukusabela kwe-polymerization kwenzeka kwi-reactor phantsi kweemeko ezilawulwa ngononophelo. Ukuseta i-reactor kubandakanya i-metallocene catalyst, i-cocatalyst, kunye nezinye izongezo ezifunekayo kwiipropati zepolymer ezifunwayo.

Iimeko zePolymerization: Iimeko zokusabela, ezifana nobushushu, uxinzelelo, kunye nexesha lokuhlala, zilawulwa ngononophelo ukuze kuqinisekiswe ubunzima obufunwayo bemolekyuli kunye nesakhiwo sepolymer. Iicatalysts ze-Metallocene zenza ulawulo oluchanekileyo ngaphezulu kwezi parameters xa kuthelekiswa neecatalysts zemveli.

3. I-Copolymerization (Ngokuzithandela):

Ukudityaniswa kwee-Co-monomers: Kwezinye iimeko, i-mPP inokuthi yenziwe i-copolymerized kunye nezinye ii-monomers ukuguqula iimpawu zayo. Ii-co-monomers eziqhelekileyo ziquka i-ethylene okanye ezinye i-alpha-olefins. Ukudityaniswa kwee-co-monomers kuvumela ukwenziwa ngokwezifiso kwepolymer kwizicelo ezithile.

4. Ukupheliswa kunye nokupheliswa:

Ukupheliswa kwe-Rection: Nje ukuba i-polymerization igqityiwe, ukusabela kuyayekiswa. Oku kudla ngokufezekiswa ngokwazisa i-arhente yokuphelisa esebenza kunye neziphelo zekhonkco lepolymer esebenzayo, imisa ukukhula ngakumbi.

Ukucima: Ipolymer ke ipholiswe ngokukhawuleza okanye icinywe ukunqanda ukusabela okungaphezulu kunye nokuqinisa ipholima.

5. UkuBuyiselwa kwakhona kwePolymer kunye nePolymer-Processing:

Ukwahlula kwePolymer: Ipolymer yahlulwe kumxube wokusabela. Iimonomers ezingaphendulwanga, iintsalela ze-catalyst, kunye nezinye iimveliso eziphumayo ziyasuswa ngeendlela ezahlukeneyo zokwahlula.

Amanyathelo oPost-Processing: I-mPP inokuthi iqhube amanyathelo ongezelelweyo, njenge-extrusion, i-compounding, kunye ne-pelletization, ukufezekisa ifom efunwayo kunye neepropati. La manyathelo akwavumela ukuba kufakwe izongezo ezinje ngee-agent ezityibilikayo, ii-antioxidants, izizinzi, ii-nucleating agents, ii-colorants, kunye nezinye izongezo zokulungisa.

Ukuphucula i-mPP: Ukuntywila ngokuNzulu kwiindima eziphambili zokuLungisa izongezo

Iiarhente zokutyibilika: Ii-agent ze-Slip, ezifana ne-long-chain fatty amides, zihlala zongezwa kwi-mPP ukunciphisa ukungqubuzana phakathi kwamakhonkco e-polymer, ukuthintela ukunamathela ngexesha lokucubungula. Oku kunceda ukuphucula i-extrusion kunye neenkqubo zokubumba.

Izixhasi zokuHambo:Izixhasi zokuqukuqela okanye izixhobo zokuncedisa, ezifana ne-polyethylene wax, zisetyenziselwa ukuphucula ukunyibilika kwe-mPP. Ezi zongezo zinciphisa i-viscosity kwaye ziphucula amandla epolymer okuzalisa imingxunya yokungunda, okukhokelela ekusebenzeni ngcono.

Ii-Antioxidants:

I-Stabilizers: I-Antioxidants izongezo ezibalulekileyo ezikhusela i-mPP ekuthotyweni ngexesha lokucubungula. Iiphenols ezithintelweyo kunye ne-phosphites zisetyenziswa ngokuqhelekileyo i-stabilizers ezivimbela ukubunjwa kwee-radicals zamahhala, ukukhusela ukuchithwa kwe-thermal kunye ne-oxidative.

Iiarhente zeNyukliya:

Ii-agent ze-Nucleating, ezifana ne-talc okanye ezinye ii-inorganic compounds, zongezwa ukukhuthaza ukubunjwa kwe-crystalline eyalelwe ngakumbi kwi-mPP. Ezi zongezo zongeza iipropathi zemishini yepolymer, kubandakanya ukuqina kunye nokumelana nempembelelo.

Imibala:

IiPigments kunye neDayi: Imibala ihlala idityaniswa kwi-mPP ukufezekisa imibala ethile kwimveliso yokugqibela. Ii-pigments kunye nedayi zikhethwa ngokusekelwe kumbala ofunekayo kunye neemfuno zesicelo.

Izilungisi zempembelelo:

I-Elastomers: Kwizicelo apho ukuchasana kwempembelelo kubaluleke kakhulu, izilungisi zempembelelo ezifana nerabha ye-ethylene-propylene inokongezwa kwi-mPP. Ezi zilungisi ziphucula ukuqina kwepolymer ngaphandle kokuncama ezinye iipropathi.

Ahambelanayo:

I-Maleic Anhydride Grafts: I-Compatibilizers ingasetyenziselwa ukuphucula ukuhambelana phakathi kwe-mPP kunye nezinye iipolymers okanye izongezo. Iigrafti ze-anhydride ze-Maleic, umzekelo, zinokuphucula ukunamathela phakathi kwezinto ezahlukeneyo zepolymer.

Slip kunye ne-Antiblock Agents:

Ii-Agents ze-Slip: Ukongeza ekunciphiseni ukungqubuzana, i-agent ye-slip inokusebenza njenge-anti-block agents. I-Antiblock agents zithintela ukunamathela kunye nefilimu okanye i-sheet surfaces ngexesha lokugcinwa.

(Kubalulekile ukuqaphela ukuba izongezo ezisetyenzisiweyo ezisetyenzisiweyo kuqulunqo lwe-mPP zinokuhluka ngokusekelwe kwisicelo esicetywayo, iimeko zokucubungula, kunye neempawu zezinto eziphathekayo ezifunwayo. Abavelisi bakhetha ngononophelo ezi zongezo ukuze bafezekise ukusebenza kakuhle kwimveliso yokugqibela. Ukusetyenziswa kwe-metallocene catalysts kwi-catalysts ukuveliswa kwe-mPP kunika inqanaba elongezelelweyo lolawulo kunye nokuchaneka, ukuvumela ukufakwa kwezongezo ngendlela enokuthi ilungiswe kakuhle ukuhlangabezana neemfuno ezithile.)

Ukuvula ukusebenza kakuhle丨Izisombululo ezitsha ze-mPP: Indima yeNoveli yoLungiso lwezongezo, Yintoni abavelisi be-mPP ekufuneka bayazi!

I-mPP iye yavela njengepolymer eguquguqukayo, enikezela ngeepropati eziphuculweyo kunye nokusebenza okuphuculweyo kwizicelo ezahlukeneyo. Nangona kunjalo, imfihlo esemva kwempumelelo yayo ayihlali nje kuphela kwiimpawu zayo zendalo kodwa nakwindlela enobuchule yokusetyenziswa kwezongezo zokuqhubela phambili.

SILIMER 5091yazisa indlela entsha yokunyusa ukusetyenzwa kwe-metallocene polypropylene, inika enye indlela enyanzelisayo kwizongezo zePPA zemveli, kunye nezisombululo zokuphelisa izongezo ezisekwe kwifluorine phantsi kwemiqobo yePFAS.

SILIMER 5091yiFluorine-Free Polymer Processing Additive for extrusion of polypropylene material with PP as the carrier eqaliswe ngu-SILIKE. Yimveliso ye-organic modified ye-polysiloxane masterbatch, enokuthi ifudukele kwisixhobo sokucubungula kwaye ibe nefuthe ngexesha lokucubungula ngokuthatha inzuzo yesiphumo esihle sokuqala sokuthambisa se-polysiloxane kunye nesiphumo se-polarity samaqela aguquliweyo. Isixa esincinci sedosi inokuphucula ngokufanelekileyo ubumanzi kunye nokuqhubekeka, ukunciphisa i-drool ngexesha lokukhutshwa, kunye nokuphucula imeko yolusu lukakrebe, olusetyenziswa ngokubanzi ukuphucula ukuthambisa kunye neempawu zomphezulu we-plastiki extrusion.

NiniPFAS-Free Polymer Processing Aid(PPA) SILIMER 5091ifakwe kwi-metallocene polypropylene (mPP) matrix, iphucula ukunyibilika kwe-mPP, inciphisa ukungqubuzana phakathi kwamakhonkco e-polymer, kwaye inqande ukunamathela ngexesha lokucubungula. Oku kunceda ukuphucula i-extrusion kunye neenkqubo zokubumba. ukuququzelela iinkqubo zemveliso ezigudileyo kunye negalelo ekusebenzeni kakuhle ngokubanzi.

Lahla isongezo sakho esidala sokucwangcisa,SILIKE Fluorine-free PPA SILIMER 5091yinto oyifunayo!