Ko te nui ake o te matotoru oHPMChydroxypropyl methyl cellulose, ka pai ake te mahi pupuri wai. Ko te matotoru he tawhā nui o te mahi HPMC. I tēnei wā, he rerekē ngā tikanga me ngā taputapu e whakamahia ana e ngā kaihanga HPMC rerekē hei whakatau i te matotoru o te HPMC. Ko ngā tikanga matua ko Haake Rotovisko, Hoppler, Ubbelohde me Brookfield, me ētahi atu.
Mō te hua kotahi, he tino rerekē ngā hua o te matotoru i inehia mā ngā tikanga rerekē, ko ētahi he rerekētanga maha. Nō reira, ina whakatauritea te matotoru, me mahi i waenga i te tikanga whakamātautau kotahi, tae atu ki te pāmahana, te rotor, me ētahi atu.
Mō te rahi o te matūriki, ko te angiangi o te matūriki, ko te pai ake o te pupuri wai. Ina pa atu ngā matūriki nui o te cellulose ether ki te wai, ka memeha tonu te mata ka hanga he kirikiri hei takai i te rauemi kia kore ai e uru tonu ngā ngota wai, i ētahi wā kāore e taea te whakamarara kia rite te horapa ina roa te whakaoho, ka puta he wairewa paru, he agglomerate rānei. Ko te wairewatanga o te cellulose ether tētahi o ngā āhuatanga hei whiriwhiri i te cellulose ether. Ko te pai o te pai he tohu mahi nui anō hoki o te methyl cellulose ether. Ko te MC mō te moata maroke me paura, he iti te ihirangi wai, me te pai o te 20% ~ 60% te rahi o te matūriki iti iho i te 63um. Ka pā te pai o te pai ki te wairewatanga oHPMChydroxypropyl methyl cellulose ether. He kirikiri te MC matotoru, ā, ka taea te whakarewa ngāwari ki te wai me te kore e whakaemi, engari he tino puhoi te tere whakarewa, nō reira kāore e pai mō te whakamahi i roto i te moata maroke. I roto i te moata maroke, ka marara te MC i waenga i te konganuku, ngā whakakī pai me ngā rauemi whakapiringa pēnei i te sima, ā, ko te paura pai anake ka taea te karo i te piri o te methyl cellulose ether ina whakaranua ki te wai. Ina tāpirihia e te MC te wai hei whakarewa i te konganuku, he tino uaua ki te marara me te whakarewa. Ko te MC he pai rawa te matotoru ehara i te mea ka maumau noa, engari ka whakaitihia hoki te kaha ā-rohe o te moata. Ina hangaia taua moata maroke ki tētahi wāhi nui, ka tino heke te tere whakaora o te moata maroke ā-rohe, ka puta he pakaru i puta mai i te wā whakaora rerekē. Mō te moata rehu miihini, nā te poto o te wā whakaranu, ka teitei ake te pai.
I te nuinga o te wā, ko te teitei ake o te matotoru, ko te pai ake o te pānga pupuri wai. Heoi, ko te teitei ake o te matotoru, ko te teitei ake o te taumaha ngota o te MC, ā, ka heke te mahi whakarewa, ka pā kino ki te kaha me te mahi hanga o te moata. Ko te teitei ake o te matotoru, ko te kitea ake o te pānga matotoru o te moata, engari kāore i te rite ki te whanaungatanga. Ko te teitei ake o te matotoru, ka piri ake te moata maku, i te hanganga, i te mahi a te waru piri me te piri nui ki te rauemi turanga. Engari kāore e whai hua te whakanui ake i te kaha hanganga o te moata maku. I te wā hanga, kāore e kitea te mahi ārai-totoka. Engari, ko ētahi matotoru iti engari kua whakarerekētia he methyl cellulose ethers he mahi tino pai ki te whakapai ake i te kaha hanganga o te moata maku.
Ko te nui ake o te cellulose ether e tāpirihia ana ki te moata, ka pai ake te mahi pupuri wai, ka teitei ake te matotoru, ka pai ake te mahi pupuri wai.
He pānga anō hoki te pai o te HPMC ki tōna pupuri wai, i te nuinga o te wā, mō te matotoru ōrite me te pai rerekē o te methyl cellulose ether, i roto i te take o te nui o te tāpiri, ko te pai ake o te pānga pupuri wai.
E pā ana hoki te pupuri wai o te HPMC ki te pāmahana o te whakamahinga, ā, ka heke te pupuri wai o te methyl cellulose ether i te pikinga o te pāmahana. Engari i roto i te whakamahinga rauemi tūturu, he maha ngā taiao o te moata maroke ka noho ki te pāmahana teitei (neke atu i te 40 nekehanga) i raro i te āhua o te hanganga i roto i te papa wera, pērā i te whakamahana raumati o te pāreti putty pakitara o waho, e tere ake ai te whakapakeketanga o te sima me te whakapakeketanga o te moata maroke. Ko te hekenga o te tere pupuri wai ka puta te whakaaro mārama kei te pāngia te hanganga me te ātete pakaru. I roto i tēnei āhua, ka tino nui te whakaiti i te awe o ngā āhuatanga pāmahana. Ahakoa e kiia ana ko te tāpiri o te methyl hydroxyethyl cellulose ether kei mua i te whanaketanga hangarau, ko tōna whakawhirinaki ki te pāmahana ka arahi tonu ki te ngoikore o ngā āhuatanga o te moata maroke. Ahakoa te pikinga o te horopeta methyl hydroxyethyl cellulose (tātai raumati), kāore tonu te ātete hanganga me te pakaru e tutuki i ngā hiahia o te whakamahinga. Mā te maimoatanga motuhake o te MC, pērā i te whakanui ake i te tohu o te etherification, ka taea e te pānga pupuri wai o te MC te pupuri i te pānga pai ake i raro i te pāmahana teitei, kia taea ai te whakarato i te mahi pai ake i raro i ngā āhuatanga uaua.
Wā tuku: Mei-18-2022