A:
Ko te MC he methyl cellulose: he miro parakore i muri i te maimoatanga kawakore, mewaro pūhaumāota hei kaihoko whakaetere, na roto i te raupapa tauhohenga ki te hanga cellulose ether.Ko te tikanga, ko te tohu whakakapinga ko te 1.6~2.0, ka rereke te whakarewatanga ki te tohu whakakapinga.Noionic cellulose ether.
(1) Ko te pupuri i te wai o te methyl cellulose e whakawhirinaki ana ki te nui o te taapiri, te pokey, te pai o te matūriki me te tere memeha.Ko te tikanga taapiri he nui, he iti te iti, he pokey, he teitei te pupuri wai.Ko te nui o nga taapiri he nui te awe ki te reeti pupuri wai, a, kaore i te rite te pokey ki te reeti pupuri wai.Ko te tere o te whakakore i te nuinga ka whakawhirinaki ki te tohu whakarereke o te mata me te pai o te matūriki o te matūriki cellulose.I roto i te maha o nga etera cellulose i runga ake nei, he teitei ake te reeti pupuri wai methyl cellulose me HPMC hydroxypropyl methyl cellulose.
(2) Ko te methyl cellulose he wairewa ki te wai matao, he uaua ki te memeha i roto i te wai wera.He tino pumau tona otinga wai i roto i te pH=3~12.He pai te hototahitanga ki te māngaro, te kapia guanidine me te maha o nga surfactants.Ka puta te whakamaarama ina tae te pāmahana ki te pāmahana wai.
(3) Ko te huringa o te pāmahana ka tino pa ki te reiti pupuri wai o te methyl cellulose.Ko te tikanga, ka nui ake te pāmahana, ka kino te pupuri wai.Mena ka neke ake te mahana o te kumete ki te 40 ℃, ka tino kino te pupuri wai o te methyl cellulose, ka tino pa ki te hanga o te moata.
(4) Ko te Methyl cellulose he tino awe ki te hanga me te piri o te kumete.Ko te "Adhesion" i konei e pa ana ki te whakapiringa i rongohia e te kaimahi i waenga i te taputapu me te taputapu pakitara, ara ko te parenga kutikuti o te moata.He nui te adhesion, he nui te parenga kutikuti o te moata, he nui ano te kaha e hiahiatia ana e nga kaimahi i roto i te tukanga o te whakamahinga, a, he kino te hanga o te moata.I roto i nga hua cellulose ether, ko te piri o te methyl cellulose kei te taumata ngawari.
Ko te HPMC he hydroxypropyl methyl cellulose: he mea hanga mai i te miro parakore i muri i te maimoatanga kawakore, me te propylene oxide me te chloromethane hei kaihoko etherifying, na roto i te raupapa o nga tauhohenga me te hanga o te cellulose kore-katote etere whakauru.Ko te tohu o te whakakapinga ko te tikanga 1.2~2.0.He rereke ona ahuatanga ki te wahanga o te methoxy me te ihirangi hydroxypropyl.
(1) Ko te HPMC hydroxypropyl methyl cellulose he ngawari te rewa i roto i te wai matao, he uaua ki te memeha i te wai wera.Heoi ano, ko te pāmahana whakahiato i roto i te wai wera he tino teitei ake i tera o te methyl cellulose.Ko te memehatanga o te methyl cellulose i roto i te wai matao i tino pai ake.
(2) Ko te viscosity o te HPMC hydroxypropyl methyl cellulose e pa ana ki tona taimaha ngota, a, ko te teitei o te taimaha o te ngota, ko te teitei ake o te viscosity.Ka pa ano te pāmahana ki te pokey.Ka heke te pokey ina piki ake te pāmahana.Engari he iti ake te paanga o te pāmahana teitei i to te methyl cellulose.Ka noho pumau te otinga ina rongoa ki te pāmahana rūma.
(3) Ko te HPMC hydroxypropyl methyl cellulose he pumau ki te waikawa me te turanga, a he tino pumau tona otinga wai i roto i te awhe o te pH = 2 ~ 12.He iti te paanga o te houra me te wai kotakota ki ona taonga, engari ka taea e te kawakore te whakatere i te tere o te whakakore me te whakapai ake i te pokey.Ko te HPMC hydroxypropyl methyl cellulose he pumau ki nga tote whanui, engari ka nui te kukū o te otinga tote, ka piki ake te pokey o te otinga HPMC hydroxypropyl methyl cellulose.
(4) Ko te pupuri wai o te HPMC hydroxypropyl methyl cellulose e whakawhirinaki ana ki tona inenga me te pokey, me te tere o te pupuri wai o te HPMC hydroxypropyl methyl cellulose he teitei ake i tera o te methyl cellulose i te inenga kotahi.
(5) Ka taea te whakauru HPMC hydroxypropyl methyl cellulose ki te wai-wairewa polymer pūhui kia rite, kia teitei ake te otinga pokey.Pērā i te waipiro polyvinyl, te māngaro ether, te kāpia huawhenua me ētahi atu.
(6) Ko te whakapiri o te HPMC hydroxypropyl methyl cellulose ki te hanga moata he teitei ake i tera o te methyl cellulose.
(7) Ko te HPMC hydroxypropyl methyl cellulose he pai ake te aukati i te methyl cellulose, he iti ake i tera o te methyl cellulose.
Te wa tuku: Mei-26-2022