Nkhani

Mbiri yaZowonjezera za silicone / Silicone masterbatch / Siloxane masterbatchndi momwe zimagwirira ntchito muwaya ndi ma waya ophatikizikamafakitale?

Zowonjezera za silicone zokhala ndi50% silicone polima yogwira ntchitoYomwazidwa mu chonyamulira monga polyolefin kapena mchere, yokhala ndi mawonekedwe a granular kapena ufa, yomwe imagwiritsidwa ntchito kwambiri ngati zothandizira pokonza mawaya ndi zingwe. Zinthu zodziwika bwino mongaSILOXANE MB50ntchito yotsatizana ngati mafuta odzola kapena osinthira mafupa m'makampani a waya ndi zingwe ndipo idayambitsidwa koyamba kuchokera ku Dow Corning ku United States zaka makumi awiri zapitazo, kenakonjira ina ya SILICONE MASTERBATCH MB50adawonekera pamsika ndi70% silicone polima yogwira ntchitoZogulitsidwa mu chonyamulira ngati silika, zokhala ndi mawonekedwe a granular, kenako zinthu zochokera ku Chengdu Silike zinayamba kugulitsidwa kuyambira chaka cha 2004, zokhala ndi silicone kuyambira 30-70% ndi granular kapena ufa.

Magawo aukadaulo a silicone masterbatch yamalonda ayenera kuphatikizapo izi:

(1) Mukagwiritsidwa ntchito ngati mafuta odzola kapena osinthira matenda a m'mitsempha, kuchuluka kwa mafutawa kumayambira pa 5 mpaka 50%.

(2) Chonyamulira chiyenera kugwirizana ndi silicone ndipo gawo lalikulu la fomula ya wogwiritsa ntchito liyenera kuganiziridwa, ndi chizindikiro cha dzina la polima ndi index yosungunuka ya chonyamulira, kuti ogwiritsa ntchito athe kuigwiritsa ntchito popanga fomula. Ngati ufa wa mchere wosapangidwa ndi zinthu zachilengedwe ukugwiritsidwa ntchito ngati chonyamulira, dzina la ufa liyenera kufotokozedwa. Kuyera ndi kusalala kwa ufa wosapangidwa ndi zinthu zachilengedwe ndikofunikira kwa makasitomala, ndipo ufa woyera ndi wa micron uyenera kusankhidwa momwe angathere kuti upangidwe.

Mukagwira ntchito ngati mafuta odzola kapena osintha rheological

Za zinthu za polyethylene

Monga momwe zimadziwikira, vuto la "khungu la shaki" nthawi zambiri limachitika potulutsa mawaya ndi zingwe za polyethylene zotetezedwa kapena zophimbidwa ndi chivundikiro, makamaka potulutsa polyethylene yotsika kwambiri (LLDPE) kapena polyethylene yotsika kwambiri (ULDPE kapena POE). Zipangizo za polyethylene zolumikizidwa ndi cross-link (kaya peroxide cross-linking kapena silane cross-linking) nthawi zina zimakhalanso ndi vuto la "khungu la shaki", chifukwa chosaganizira bwino za njira yothira mafuta mu fomula yazinthu. Machitidwe apadziko lonse lapansi pano ndi kuwonjezera kuchuluka kwa ma fluoropolymers mu fomula, koma mtengo wake ndi wokwera ndipo kugwiritsa ntchito kwake ndi kochepa.

Ndi kuchuluka kochepa kwasilicone yolemera kwambiri ya molekyuluKuyika (0.1-0.2%) ku polyethylene kapena polyethylene yolumikizidwa ndi waya kungalepheretse kupanga "khungu la shaki". Nthawi yomweyo, ndi mphamvu yake yopaka mafuta, imatha kuchepetsa mphamvu ya extrusion kuti injini yokoka isayime chifukwa cha kuchuluka kwa mafuta.

Silicone yomwe imagwiritsidwa ntchito ngati mafuta, chifukwa cha kuchuluka kwake kochepa, iyenera kugawidwa mofanana muzinthuzo kuti igwire ntchito panthawi yokonza. Chifukwa cha kusagwira ntchito kwa mankhwala a silicone, sidzagwirizana ndi zinthu zomwe zili mu fomula. Ndikofunikira kuti fakitale ya zinthu za chingwe isakanize silicone mofanana mu njira yopangira pulasitiki kuti igwiritsidwe ntchito mosavuta fakitale ya chingwe.

KwaZingwe zopanda moto zoletsa moto (HFFR) zopanda halogen 

Chifukwa cha kupezeka kwa zinthu zambiri zoletsa moto (ufa wa mchere) mu HFFR cable compounds, zomwe zimapangitsa kuti kukhuthala kwambiri komanso kuyenda bwino pakakonzedwa; kukhuthala kwakukulu kumapangitsa kuti mota izikoka mosavuta panthawi yotulutsa, ndipo kusinthasintha kochepa kwa madzi kumapangitsa kuti guluu wochepa apangidwe panthawi yotulutsa. Chifukwa chake, fakitale ya chingwe ikatulutsa zingwe zopanda halogen, mphamvu yake ndi 1/2-1/3 yokha ya chingwe cha polyvinyl chloride.

Ndi kuchuluka kwa silicone mu fomula, sikuti kungokonza zinthu monga kuyenda bwino kokha komanso kumakhala ndi kuletsa kwa moto kwa zinthuzo.