Nkhani

Silicone masterbatchndi mtundu wowonjezera mumakampani a mphira ndi pulasitiki. Ukadaulo wapamwamba kwambiri wazowonjezera za silikoni ndikugwiritsa ntchito ultra-high molecular weight (UHMW) silikoni polima (PDMS) mu utomoni wosiyanasiyana wa thermoplastic, monga LDPE, EVA, TPEE, HDPE, ABS, PP, PA6, PET, TPU. , HIPS, POM, LLDPE, PC, SAN, etc. Ndipo ngati ma pellets kuti alole kuwonjezera kosavuta kwa zowonjezera mwachindunji ku thermoplastic panthawi yokonza. kuphatikiza kukonza bwino kwambiri ndi mtengo wotsika mtengo. Silicone masterbatch ndiyosavuta kudyetsa, kapena kusakaniza, mu mapulasitiki panthawi yophatikizika, kutulutsa, kapena jekeseni. Ndikwabwino kuposa mafuta achikhalidwe a sera ndi zina zowonjezera pakuwongolera kutsetsereka panthawi yopanga. Chifukwa chake, mapurosesa apulasitiki amakonda kugwiritsa ntchito pazotulutsa.

Maudindo aSilicone Masterbatch zowonjezeramu Kupititsa patsogolo Pulasitiki Processing

Silicone masterbatch ndi imodzi mwazosankha zodziwika bwino za mapurosesa pakupanga pulasitiki komanso kukonza kwapamwamba. Monga ngati mafuta apamwamba kwambiri. Ili ndi ntchito zazikuluzikulu zotsatirazi zikagwiritsidwa ntchito mu thermoplastic resin:

A. Kupititsa patsogolo kayendedwe ka utomoni ndi kukonza;

Kudzaza bwino kwa nkhungu ndi kumasulidwa kwa nkhungu

Kuchepetsa mphamvu ya extrude ndikuwonjezera kuchuluka kwa extrusion;

B. Imawonjezera mphamvu ya utomoni pamwamba

Kupititsa patsogolo kutha kwa pulasitiki, digiri yosalala, ndikuchepetsa kugundana kwapakhungu, Kupititsa patsogolo kukana komanso kukana kukanika;

Ndipo silikoni masterbatch ili ndi kukhazikika kwabwino kwa kutentha (kutentha kwa kutentha kwapakati ndi pafupifupi 430 ℃ mu nayitrogeni) ndi kusamuka;

Chitetezo cha chilengedwe;

Chitetezo kukhudzana ndi chakudya.

Tiyenera kuwonetsa kuti ntchito zonse za silicone masterbatches ndi za A ndi B (mfundo ziwiri zomwe tazilemba pamwambapa) koma sizinthu ziwiri zodziyimira pawokha.

onjezerani wina ndi mzake, ndipo ndi ogwirizana.

Zotsatira pa zinthu zomaliza

Chifukwa cha mawonekedwe a mamolekyu a siloxane, mlingo wake ndi wochepa kwambiri kotero kuti pafupifupi palibe zotsatira pa makina azinthu zomaliza. nthawi zambiri, kupatula elongation ndi mphamvu mphamvu zidzawonjezeka pang'ono, popanda zotsatira pa ena makina katundu. Pa mlingo waukulu, zimakhala ndi synergistic zotsatira ndi flame retardant agents.

Chifukwa cha ntchito yake yabwino pa kukana kwapamwamba ndi kutsika kwa kutentha, sikudzakhala ndi zotsatirapo pa kukana kwapamwamba ndi kutsika kwa kutentha kwa zinthu zomaliza. pamene kuyenda kwa utomoni, kukonza, ndi katundu wa pamwamba kudzasinthidwa mwachiwonekere ndipo COF idzachepetsedwa.

Njira yochitira

Silicone masterbatchesndi ultra-high molecular weight polysiloxane omwazikana mu utomoni wonyamulira zosiyanasiyana amene ndi mtundu wa ntchito masterbatch. Pamene kopitilira muyeso-mkulu maselo kulemerasilicone masterbatchesamawonjezeredwa mu pulasitiki chifukwa cha nonpolar awo komanso ndi mphamvu yochepa pamwamba, imakhala ndi chizolowezi chosamukira kumtunda wa pulasitiki panthawi yosungunuka; pamene, popeza ali ndi kulemera kwakukulu kwa maselo, sangathe kuchoka kwathunthu. Choncho timachitcha kuti chigwirizano ndi mgwirizano pakati pa kusamuka ndi kusamuka. chifukwa cha katundu uyu, wosanjikiza zokometsera zosinthika anapanga pakati pa pulasitiki pamwamba ndi wononga.

Pamene processing ikupitirirabe, wosanjikiza wopaka mafutawa amachotsedwa nthawi zonse ndikupangidwa. Chifukwa chake kuyenda kwa utomoni ndi kukonza zikuyenda bwino nthawi zonse ndikuchepetsa magetsi, torque ya zida ndikuwongolera zotulutsa. Pambuyo pokonza ma twin-screw, ma silicone masterbatches adzagawidwa mofanana mu pulasitiki ndikupanga tinthu tating'onoting'ono ta 1 mpaka 2-micron pansi pa maikulosikopu, tinthu tating'ono tamafuta timapereka mawonekedwe abwinoko, kumva bwino m'manja, kutsika kwa COF, ndi kukulirapo. abrasion ndi kukana zokanda.

Kuchokera pachithunzichi titha kuwona kuti silikoni idzakhala tinthu tating'onoting'ono titamwazika mu pulasitiki, chinthu chimodzi chomwe tiyenera kuwonetsa ndikuti dispersibility ndiye cholozera chofunikira cha silicone masterbatches, tinthu tating'onoting'ono tating'onoting'ono, timagawika bwino kwambiri, zotsatira zake zimakhala zabwino. tipeza.