Nkhani

"Metallocene" amatanthauza organic metal coordination mankhwala opangidwa ndi kusintha zitsulo (monga zirconium, titaniyamu, hafnium, etc.) ndi cyclopentadiene. Polypropylene yopangidwa ndi metallocene catalysts imatchedwa metallocene polypropylene (mPP).

Zogulitsa za Metallocene polypropylene (mPP) zimakhala ndi kutuluka Kwapamwamba, kutentha kwakukulu, chotchinga chapamwamba, Kuwonekera kwapadera ndi Kuwonekera, fungo lochepa, komanso ntchito zomwe zingatheke mu Fibers, Cast Film, Injection Molding, Thermoforming, Medical, ndi Zina. Kupanga kwa metallocene polypropylene (mPP) kumaphatikizapo njira zingapo zofunika, kuphatikizapo kukonzekera kothandizira, polymerization, ndi post-processing.

1. Kukonzekera kwa Catalyst:

Kusankhidwa kwa Metallocene Catalyst: Kusankhidwa kwa chothandizira cha metallocene n'kofunika kwambiri pozindikira zomwe zimayambitsa mPP. Zothandizira izi nthawi zambiri zimaphatikizapo zitsulo zosinthika, monga zirconium kapena titaniyamu, zomwe zimakhala pakati pa cyclopentadienyl ligands.

Cocatalyst Addition: Metallocene catalysts nthawi zambiri amagwiritsidwa ntchito limodzi ndi cocatalyst, makamaka chigawo chopangidwa ndi aluminiyumu. Cocatalyst imayendetsa chothandizira cha metallocene, kulola kuti iyambe kuchitapo kanthu.

2. Polymerization:

Kukonzekera kwa Feedstock: Propylene, monomer ya polypropylene, imagwiritsidwa ntchito ngati chakudya choyambirira. Propylene imayeretsedwa kuti ichotse zonyansa zomwe zingasokoneze njira ya polymerization.

Kukonzekera kwa Reactor: Ma polymerization reaction amachitika mu riyakitala pansi pamikhalidwe yoyendetsedwa bwino. Kukonzekera kwa riyakitala kumaphatikizapo chothandizira cha metallocene, cocatalyst, ndi zina zowonjezera zomwe zimafunikira pakupanga polima.

Mikhalidwe ya Polymerization: Zomwe zimachitikira, monga kutentha, kuthamanga, ndi nthawi yokhalamo, zimayendetsedwa mosamala kuti zitsimikizire kulemera kwa maselo ndi kapangidwe ka polima. Zothandizira za Metallocene zimathandizira kuwongolera molondola pazigawozi poyerekeza ndi zida zachikhalidwe.

3. Copolymerization (Mwasankha):

Kuphatikizika kwa Co-monomers: Nthawi zina, mPP imatha kupangidwa ndi ma monomers ena kuti isinthe mawonekedwe ake. Ma co-monomers wamba amaphatikiza ethylene kapena alpha-olefin ena. Kuphatikizika kwa ma co-monomers kumapangitsa kuti ma polima azitha kugwiritsa ntchito mwapadera.

4. Kuthetsa ndi Kuthetsa:

Kuchita Kutha: Pamene polymerization yatha, zomwe zimathetsedwa. Izi nthawi zambiri zimatheka poyambitsa chotsitsa chomwe chimagwira ndi malekezero a polima, kuletsa kukula kwina.

Kuzimitsa: Polimayo amazimitsidwa mwachangu kapena kuzimitsidwa kuti apewe kuchitapo kanthu komanso kulimbitsa polima.

5. Kubwezeretsa Polima ndi Kukonza Pambuyo:

Kupatukana kwa polima: Polima amasiyanitsidwa ndi kusakaniza komwe kumachitika. Ma monomers osakhudzidwa, zotsalira za catalyst, ndi zinthu zina zomwe zimachotsedwa zimachotsedwa kudzera munjira zosiyanasiyana zolekanitsa.

Njira Zopangira Pambuyo: MPP ikhoza kupitilira njira zina zowonjezera, monga extrusion, compounding, ndi pelletization, kuti akwaniritse mawonekedwe omwe akufunidwa ndi katundu. Masitepewa amalolanso kuphatikizika kwa zowonjezera monga slip agents, antioxidants, stabilizers, nucleating agents, colorants, ndi zina zowonjezera pokonza.

Kukonzanitsa mPP: Kulowera Mwakuya mu Maudindo Ofunika Kwambiri Pokonza Zowonjezera

Ma Slip Agents: Ma slip agents, monga ma amide aatali amafuta amtundu wautali, nthawi zambiri amawonjezeredwa ku mPP kuti achepetse kukangana pakati pa maunyolo a polima, kuteteza kumamatira panthawi yokonza. Izi zimathandiza kukonza extrusion ndi akamaumba njira.

Zowonjezera Mayendedwe:Zowonjezera zoyenda kapena zothandizira, monga phula la polyethylene, zimagwiritsidwa ntchito kupititsa patsogolo kusungunuka kwa mPP. Zowonjezera izi zimachepetsa kukhuthala ndikukulitsa luso la polima lodzaza mabowo a nkhungu, zomwe zimapangitsa kuti zitheke bwino.

Antioxidants:

Ma Stabilizers: Antioxidants ndizofunikira zowonjezera zomwe zimateteza mPP kuti isawonongeke panthawi yokonza. Zolepheretsa phenols ndi phosphites zimagwiritsidwa ntchito mokhazikika zomwe zimalepheretsa mapangidwe a free radicals, kuteteza kuwonongeka kwa kutentha ndi okosijeni.

Nucleating Agents:

Ma Nucleating agents, monga talc kapena mankhwala ena osakanikirana, amawonjezeredwa kuti apititse patsogolo mapangidwe a crystalline mu mPP. Zowonjezera izi zimakulitsa mphamvu zamakina a polima, kuphatikiza kuuma komanso kukana mphamvu.

Mitundu:

Nkhumba ndi Utoto: Mitundu yamitundu nthawi zambiri imaphatikizidwa mu mPP kuti ikwaniritse mitundu yeniyeni pazomaliza. Nkhumba ndi utoto zimasankhidwa kutengera mtundu womwe ukufunidwa komanso zomwe zimafunikira.

Zosintha Zokhudza:

Ma Elastomers: Pazinthu zomwe kukana kwamphamvu kuli kofunika, zosintha zosintha monga mphira wa ethylene-propylene zitha kuwonjezeredwa ku mPP. Zosintha izi zimakulitsa kulimba kwa polima popanda kusiya zinthu zina.

Ogwirizana:

Maleic Anhydride Grafts: Ma Compatibilizer angagwiritsidwe ntchito kupititsa patsogolo kuyanjana pakati pa mPP ndi ma polima ena kapena zowonjezera. Maleic anhydride grafts, mwachitsanzo, amatha kupititsa patsogolo kumamatira pakati pa zigawo zosiyanasiyana za polima.

Slip ndi Antiblock Agents:

Slip Agents: Kuphatikiza pa kuchepetsa kukangana, ma slip agents amathanso kukhala ngati anti-block agents. Antiblock agents amalepheretsa kuti filimu kapena mapepala asamamatire panthawi yosungira.

(Ndikofunikira kudziwa kuti zowonjezera zowonjezera zomwe zimagwiritsidwa ntchito popanga mPP zimatha kusiyanasiyana malinga ndi zomwe akufuna, momwe zimapangidwira, komanso zinthu zomwe zimafunidwa. Opanga amasankha mosamala zowonjezera izi kuti akwaniritse ntchito yabwino kwambiri pomaliza. kupangidwa kwa mPP kumapereka mulingo wowonjezera wowongolera ndi kulondola, kulola kuphatikizidwa kwa zowonjezera m'njira yomwe ingasinthidwe bwino kuti ikwaniritse zofunikira zenizeni.)

Kutsegula Mwachangu丨Mayankho Atsopano a mPP: Udindo wa Novel Processing Additives, Zomwe opanga mPP ayenera kudziwa!

mPP yatuluka ngati polima yosinthira, yopereka zinthu zotsogola komanso magwiridwe antchito osiyanasiyana. Komabe, chinsinsi cha kupambana kwake sichinangokhala m'makhalidwe ake achilengedwe komanso kugwiritsa ntchito mwanzeru zowonjezera zowonjezera pokonza.

Mtengo wa 5091imabweretsa njira yatsopano yokwezera kutheka kwa metallocene polypropylene, ndikupereka njira ina yokakamiza pazowonjezera zachikhalidwe za PPA, ndi mayankho ochotsera zowonjezera zochokera ku fluorine pansi pa zopinga za PFAS.

Mtengo wa 5091ndi Fluorine-Free Polymer Processing Additive potulutsa zinthu za polypropylene ndi PP monga chonyamulira choyambitsidwa ndi SILIKE. Ndi organic kusinthidwa polysiloxane masterbatch mankhwala, amene akhoza kusamukira ku zipangizo processing ndi kukhala ndi zotsatira pa processing potengera zabwino koyambirira kondomu zotsatira za polysiloxane ndi polarity zotsatira za kusinthidwa magulu. A pang'ono mlingo akhoza bwino kusintha fluidity ndi processability, kuchepetsa kufa drool pa extrusion, ndi kusintha chodabwitsa cha shark khungu, chimagwiritsidwa ntchito kusintha kondomu ndi pamwamba makhalidwe a pulasitiki extrusion.

LitiPFAS-Free Polymer Processing Aid (PPA) SILIMER 5091imaphatikizidwa mu matrix a metallocene polypropylene (mPP), imathandizira kusungunuka kwa mPP, imachepetsa kukangana pakati pa maunyolo a polima, ndikuletsa kumamatira panthawi yokonza. Izi zimathandiza kukonza extrusion ndi akamaumba njira. kuwongolera njira zopangira zosalala komanso kumathandizira kuti ntchito zonse ziziyenda bwino.

Tayani zowonjezera zanu zakale,SILIKE Fluorine wopanda PPA SILIMER 5091ndi zomwe mukusowa!