I roto i te moata kua oti te whakaranu, he iti rawa te nui o te tāpiri o te hydroxypropyl methyl cellulose HPMC, engari ka taea e ia te whakapai ake i te mahi a te moata mākū, he tāpiri nui tēnei e pā ana ki te mahi hanga o te moata. He pānga pai ngā cellulose ethers me te matotoru rerekē me te nui tāpiri ki te whakapai ake i te mahi a te moata maroke. I tēnei wā, he maha ngā moata pereki me te parai he ngoikore te pupuri wai, ā, ka puta te wehenga o te paru wai i muri i ētahi meneti o te tū tonu. He mahi nui te pupuri wai o te methyl cellulose ether, ā, he mahi anō hoki tēnei e arohia ana e te nuinga o ngā kaihanga moata maroke o te kāinga, inā koa ko ērā kei ngā rohe he nui ake te pāmahana i te tonga. Ko ngā āhuatanga e pā ana ki te pānga pupuri wai o te moata maroke ko te nui o te HPMC i tāpirihia, te matotoru o te HPMC, te pai o ngā matūriki me te pāmahana o te taiao e whakamahia ana.
1. Ariā: Ko te cellulose ether he pūmua ngota ngota teitei hangai i hangaia mai i te cellulose taiao mā te whakarerekētanga matū. Ko te cellulose ether he mea ahu mai i te cellulose taiao. He rerekē te hanga o te cellulose ether i ngā pūmua hangai. Ko tōna rauemi taketake ko te cellulose, he matū pūmua taiao. Nā te hanganga motuhake o te cellulose taiao, kāore he kaha o te cellulose ki te tauhohe ki ngā kaihoko etherifying. Engari i muri i te maimoatanga o te kaihoko pupuhi, ka whakangaromia ngā here hauwai kaha i waenga i ngā mekameka ngota ngota me roto i te mekameka, ā, ka huri te tukunga kaha o te rōpū hydroxyl ki te cellulose alkali tauhohe. I muri i te tauhohenga o te kaihoko etherification, ka hurihia te rōpū -OH ki te rōpū -OR. Tikina te cellulose ether. Ko te āhua o te cellulose ether e whakawhirinaki ana ki te momo, te rahinga me te tohatoha o ngā whakakapinga. Ko te whakarōpūtanga o ngā cellulose ether e hangai ana hoki ki ngā momo whakakapinga, te nui o te etherification, te wairewa me ngā tono e pā ana. E ai ki te momo whakakapinga i runga i te mekameka ngota ngota, ka taea te wehewehe ki te monoether me te ether whakauru. Ko te HPMC e whakamahia ana e mātou ko te ether whakauru. Ko te Hydroxypropyl methyl cellulose ether HPMC he hua e whakakapia ana tetahi wāhanga o te rōpū hydroxyl i runga i te waeine e te rōpū methoxy, ā, ko tetahi atu wāhanga e te rōpū hydroxypropyl. Ko te HPMC te nuinga o te wā e whakamahia ana i roto i ngā rauemi hanga, ngā paninga rapa, ngā rongoā, ngā matū o ia rā, me ētahi atu. Whakamahia hei whakamātotoru, hei kaihoko pupuri wai, hei kaiwhakaū, hei kaiwhakamarara, hei kaihoko hanga kiriata.
2. Te pupuri wai o te cellulose ether: i roto i te hanga rauemi hanga, inā koa te moata maroke, he mahi nui te cellulose ether, inā koa i roto i te hanga moata motuhake (moata whakarerekē), he mea tino nui. Ko te mahi nui o te cellulose ether wairewa-wai i roto i te moata e toru ngā āhuatanga matua. Ko tētahi ko te kaha pupuri wai pai, ko tētahi ko te awe ki te ōritetanga me te thixotropy o te moata, ā, ko te tuatoru ko te taunekeneke ki te sima. Ko te pānga pupuri wai o te cellulose ether e whakawhirinaki ana ki te mimiti wai o te paparanga turanga, te hanganga o te moata, te matotoru o te paparanga o te moata, te hiahia wai o te moata, me te wā whakatakoto o te rauemi whakapūmau. Ko te pupuri wai o te cellulose ether tonu e ahu mai ana i te wairewa me te maroke o te cellulose ether tonu.
te matotoru me te thixotropy o te cellulose ether: Ko te tuarua o ngā mahi a te cellulose ether-thickning e whakawhirinaki ana ki: te nui o te polymerization o te cellulose ether, te kukū o te otinga, te pāmahana me ētahi atu āhuatanga. Ko ngā āhuatanga gelation o te otinga he āhuatanga ahurei o te alkyl cellulose me ōna hua kua whakarerekētia. E pā ana ngā āhuatanga gelation ki te nui o te whakakapinga, te kukū o te otinga me ngā tāpiringa.
Mā te kaha pupuri wai pai ka tino pai ake te makuku o te sima, ka taea te whakapai ake i te piri makuku o te moata makuku, te whakanui ake i te kaha piri o te moata, ā, ka taea te whakarite i te wā. Mā te tāpiri i te cellulose ether ki te moata rehu miihini ka taea te whakapai ake i te mahi rehu, te papu rānei o te moata, me te kaha hanganga. Nō reira, e whakamahia whānuitia ana te cellulose ether hei tāpiri nui i roto i te moata kua oti te whakaranu.
Wā tuku: Hakihea-16-2021