Kaolin: He Whakakī Mahi-Tiketike mō ngā Kirihou Hou

Ko te kaolin, he kohuke silicate paparanga tūturu, kua noho hei tētahi o ngā whakakī mahi e whakamahia whānuitia ana i roto i te umanga kirihou. Mā te whakakotahi i te whai huatanga o te utu, te ngāwari o te tukatuka, me te whakarei ake i te mahi, ka tukuna he painga taurite mō ngā polyolefins, PVC, PET, polyamides, me ētahi atu matū thermoplastic. Mō ngā kaihanga e whai ana ki te whakapai ake i te kounga me te whakahaere i ngā utu, he kōwhiringa nui te kaolin.

Ko tōna hanganga pereti me te rahi o te matūriki angiangi ka hua mai he whakapainga miihini whakamiharo. Mā te kaolin kua marara tika ka whakanui ake i te kaha kume, te pakari, me te ātete pānga me te kore e whakaiti i te pakari, ka āwhina i te whakaputa i ngā wāhanga mama engari kaha ake. Ka mahi anō hoki hei matū whakatupu ira, e whakapai ake ana i te hanganga tioata me te whakaiti i te whakaheke me te piko i te wā e hangaia ana, e whakarite ana i te pumau o te taha mō ngā paipa, ngā kōtaha, me ngā wāhanga motuka.

Haunga te kaha, ka whakanui ake te kaolin i te ātete me te mahi wera. Ahakoa te iti o te uta, ka tino whakaitihia te uruhanga o te hau me te makuku, ka roa ake te roa o te oranga o ngā kiriata takai. Ka whakanui ake te kaolin kua whakapūkarahia i te pāmahana whakararo wera me te pumau wera, ka roa ake te mau o ngā kirihou i raro i ngā āhuatanga pāmahana teitei. Ka whakapai ake hoki i te ātete matū, te whakamarumaru hiko, me ngā āhuatanga ārai-aukati.—he mea nui mō te hipoki taura, ngā whare hiko, me ngā ipu ahumahi.

Ko ngā painga o te ataahua me te tukatuka ka wehewehea ake te kaolin. Mā te mā nui ka taurite te tae, ka whakaiti i te whakamahinga o te tae, ā, ka puta he mata kanapa, he ōrite hoki nā tōna āhua maeneene. Ka whakapai ake te kaolin i te rere rewa me te pumau o te whakaputanga, ka tautoko i te pai o te whakaputa me te iti o te para. Me ngā taumata uta noa mai i te 15% ki te 40%, ka whakaitihia te whakamahinga o te kapia me te kore e whakararu i te mahi whakamahinga mutunga.

Ka whakawhānui ake ngā momo mata kua whakarerekētia i te hototahitanga ki ngā matihiko polymer, ka whakanui ake i ngā pānga horapa me te whakapakari. I ēnei rā, ka whakamahia ngā kirihou kī tonu i te kaolin hei takai, hei hanga motuka, hei hanga whare, hei hikohiko, hei taonga kaihoko, me te tutuki i ngā paerewa ture me ngā paerewa mahi tino pakari.

Hei whakarāpopototanga, he nui atu te kaolin i te whakakī noa iho—He tāpiringa maha-mahi tēnei e whakapakari ana, e whakaū ana, e arotau ana hoki i ngā rauemi kirihou. I te mea e hiahia ana te umanga ki te mahi me te pumau ake, ka noho tonu te kaolin hei otinga pai mō ngā whakatakotoranga kirihou auaha, utu-pai hoki.