Kaolin: Chodzaza Mapulastiki Amakono Chogwira Ntchito Kwambiri

Kaolin, mchere wa silicate wopangidwa mwachilengedwe, wakhala umodzi mwa zinthu zodzaza zomwe zimagwiritsidwa ntchito kwambiri mumakampani opanga mapulasitiki. Kuphatikiza kugwiritsa ntchito bwino ndalama, kusinthasintha, komanso kukulitsa magwiridwe antchito, kumapereka zabwino zokwanira za polyolefins, PVC, PET, polyamides, ndi mankhwala ena a thermoplastic. Kwa opanga omwe akufuna kukweza khalidwe pamene akuwongolera ndalama, kaolin ndi chisankho chofunikira kwambiri.

Kapangidwe kake ka ma platelet ndi kukula kwa tinthu tating'onoting'ono kumabweretsa kusintha kwakukulu kwa makina. Kaolin yomwazidwa bwino imawonjezera mphamvu yokoka, kulimba, komanso kukana kugwedezeka popanda kuwononga kulimba, kuthandiza kupanga zinthu zopepuka koma zolimba. Imagwiranso ntchito ngati chothandizira kupanga nucleating, kukonza kapangidwe ka kristalo ndikuchepetsa kuchepa ndi kupotoka panthawi yopangira, kuonetsetsa kuti mapaipi, ma profiles, ndi zida zamagalimoto zimakhala zolimba.

Kuposa mphamvu, kaolin imakweza zotchinga ndi magwiridwe antchito a kutentha. Ngakhale ikakwezedwa pang'ono, imachepetsa kwambiri mpweya ndi chinyezi, ndikuwonjezera nthawi yosungiramo mafilimu opakidwa. Kaolin yokhala ndi calcium imathandizira kutentha kosasunthika komanso kukhazikika kwa kutentha, zomwe zimapangitsa kuti mapulasitiki akhale olimba kwambiri pa kutentha kwambiri. Imathandizanso kukana mankhwala, kuteteza magetsi, komanso mphamvu zoletsa kutsekeka.—Chofunika kwambiri pa majekete a chingwe, ma housing amagetsi, ndi ma container a mafakitale.

Ubwino wa kukongola ndi kukonza zinthu umawonjezera kusiyana kwa kaolin. Kuyera kwambiri kumatsimikizira kufanana kwa mitundu yoyera komanso kumachepetsa kugwiritsa ntchito utoto, pomwe mawonekedwe ake osalala a tinthu tating'onoting'ono amapereka malo owala komanso ofanana. Kaolin imapangitsa kuti madzi azisungunuka bwino komanso kuti madzi azituluka bwino, zomwe zimathandiza kuti ntchito iyende bwino komanso kuti zinthu zisamatayike kwambiri. Ndi kuchuluka kwa mafuta kuyambira 15% mpaka 40%, imachepetsa kugwiritsa ntchito utomoni popanda kusokoneza magwiridwe antchito ogwiritsidwa ntchito kumapeto.

Magiredi osinthidwa pamwamba amawonjezera kuyanjana ndi ma polymer matrices, kukulitsa kufalikira ndi mphamvu zolimbitsa. Masiku ano, mapulasitiki odzazidwa ndi kaolin amapereka ma phukusi, magalimoto, zomangamanga, zamagetsi, ndi zinthu zogwiritsidwa ntchito, kukwaniritsa miyezo yokhwima yolamulira komanso magwiridwe antchito.

Mwachidule, kaolin ndi chinthu choposa kungodzaza wamba.—Ndi chowonjezera cha ntchito zambiri chomwe chimalimbitsa, kukhazikika, ndikukonza bwino zinthu zapulasitiki. Popeza makampaniwa akufuna magwiridwe antchito apamwamba komanso kukhazikika, kaolin ipitiliza kukhala yankho labwino kwambiri la mapangidwe apulasitiki atsopano komanso otsika mtengo.