Ātete pakaru He mea tino nui te pereti mata raima mō te roa o te mahi a te pāmu whakakī toka mata raima (CFRD). Ko ngā pānga o pungarehu rereKa rangahauhia te matū whakawhanui MgO, me te ranunga whakaiti-whakaiti (SRA) i runga i ngā āhuatanga ā-pūkaha, te whakaiti maroke me te ātete pakaru o te raima papa mata, ā, ka whakaritea ki te raima tohutoro. E whakaatu ana ngā hua ko te tāpiri o te 20% pungarehu rere (mā te taumaha o te here) ka whakarei ake i te kaha o te raima i te wā kua pakeke. He rerekē, ko te tāpiri o te matū whakawhanui 6% MgO, 1% SRA rānei, ka whakaiti i te kaha pēhi, ka wehe i te kaha kume me te kume mutunga ki ētahi nekehanga i ngā tau rerekē. Ko te whakaurunga o te 20% pungarehu rere, te matū whakawhanui 6% MgO, me te 1% SRA ka taea te whakaiti i te whakaheke maroke i ngā tau rerekē me te whakapai ake i te ātete pakaru wawe o te raima, ko te whakaurunga o te matū whakawhanui 6% MgO he pai ake te aukati i te whanaketanga o te whakaheke me te whakapai ake i te ātete pakaru o te raima i te tāpiri o te 20% pungarehu rere, 1% SRA rānei.
Ko te pārae whakakī toka mata raima (CFRD) he pārae whakakī toka me te whakakī toka hei kaha matua, ā, ko te mata raima o runga hei tinana matua ārai-mimi. Nā ōna āhuatanga haumaru pai, ngāwari ki te urutau, poto te wā hanga me te iti o te utu, kua noho ngā pārae whakakī toka mata raima hei tētahi o ngā momo pārae e whakamahia whānuitia ana i roto i te hoahoa pārae. He hanganga angiangi, he rite ki te rīpene ngā papa raima, he ngāwari ki te pakaru nā te huringa pāmahana, te whakarerekētanga rōrahi me te taunga o te turanga pārae. Mō te tinana pārae, ki te mea he pakaru kei te mata raima, ka whakangaro i te pumau me te pakari o te hanganga tinana pārae, ā, ko te āputa i puta mai i te pakaru o te pereti mata ka taea te mimiti o te wai o waho ki roto i te raima, ka puta tika ai te turuturu o te tinana pārae. Nō reira, ko te whakapai ake i te ātete pakaru o ngā papa mata raima he take nui e pā ana ki te whakahaere haumaru o ngā pārae whakakī toka mata raima. E whakaatu ana ngā mahi hangarau me ngā rangahau o nāianei ko ngā mahi hangarau matua hei whakapai ake i te ātete pakaru o te raima mata ko te whakahaere i te kounga o ngā rauemi mata o te raima, te arotau i te ōwehenga ranunga raima, te tāpiri pungarehu rere me te tāpiri i te nui o ngā muka e tika ana. Ko ngā wāhanga matua o te whakaiti whakahekenga raima he momo matū waro polyalcohol, polyether rānei me ōna hua. Kua whakaatuhia e ngā rangahau ka taea e te tāpiri i te kaihoko whakaiti whakahekenga te whakaiti i te taumahatanga mata o te wai o te pore raima, ka whakaiti i te ahotea whakahekenga e puta ana i te ngaronga o te wai o ngā pore capillary, me te whakapai ake i te ātete pakaru o te raima ki tētahi taumata. Ko te tāpiri i te kaihoko whakawhānui MgO i te wā e whakarite ana i te raima he tikanga noa hei whakahaere i ngā pakaru. I te mea ka puta he whakawhānui nui o te kaihoko whakawhānui MgO i te wā e whakatakoto ana me te whakapakeke ana i te raima, ka taea e ia te utu mō te whakahekenga raima, tae atu ki te whakahekenga pāmahana, te whakahekenga maroke me te whakahekenga-ake, ka whakaiti i te putanga mai o ngā pakaru raima. I nāianei, kua angitu te whakamahi i te kaihoko whakawhānui MgO ki te raima papatipu o te teihana hiko wai, ā, kua tutuki he pānga ārai-pakaru pai. Heoi, he iti noa ngā rangahau mō te pānga o te whakaiti mimiti me te kaihoko whakawhanui MgO ki te ātete ki ngā pakaru o te raima mata.
Wā tuku: Maehe-09-2022