▲Te hauwaiporoporo metila (HPMC)He paura mā, kāore he kakara, kāore he reka, kāore he paitini. I muri i te rewa katoa ki te wai, ka hanga e te hydroxypropyl methyl cellulose he kōroiti matotoru mārama.
▲ Ngā rauemi mata matua o te hydroxypropyl methyl cellulose (HPMC): te miro kua parakoretia, te methyl chloride, te propylene oxide, me ētahi atu rauemi mata, te houra tunutunu, te waikawa, te toluene, te isopropanol, me ētahi atu.
Te whakataurite i ngā painga me ngā ngoikoretanga o te hydroxypropyl methyl cellulose:
1. He marara te āhua o te hydroxypropyl methyl cellulose HPMC, ā, he iti te matotoru o te papatipu, ko te tauine he 0.3–0.4/ml.
He tino pai te rere o te HPMC kua whakaranua, ā, he taumaha ake te āhua, he rerekē rawa tēnei i te āhua o te hua tuturu.
2. He mārama te otinga wai HPMC hydroxypropyl methyl cellulose parakore, he nui te tuku mārama, he tere pupuri wai > 97%.
He paru te wai HPMC kua whakaranua, ā, he uaua ki te eke ki te 80% te auau pupuri wai.
3. Kaua te HPMC parakore e hongi i te haukini, te māngaro me ngā waipiro.
Ka hongi te HPMC whakaranu i ngā momo reka katoa, ahakoa he kore reka, ka taumaha tonu.
4. He muka te paura HPMC hydroxypropyl methyl cellulose parakore i raro i te karuārai, i te karāhe whakanui rānei.
Ka taea te kite i te HPMC kua whakaranua hei totoka, hei tioata rānei i raro i te karu hiko, i te karāhe whakanui rānei.
Mai i ngā āhuatanga hea hei tautuhi i ngā painga me ngā ngoikoretanga o te hydroxypropyl methyl cellulose?
1. tohu mā
Ahakoa kāore e taea e te mā te whakatau mena he ngāwari te whakamahi i te HPMC, ā, ki te tāpirihia he mea whakama i te wā o te tukanga whakaputa, ka pā ki tōna kounga. Heoi, he pai te mā o te nuinga o ngā hua pai.
2. Te ātaahua
Ko te matotoru o te HPMC he 80 me te 100 mata te tikanga, ā, ko te matotoru o te matotoru, ko te pai ake i te nuinga o te wā.
3. Tukunga
Whakatakotoriate hydroxypropyl methyl cellulose (HPMC)ki roto i te wai hei hanga i tētahi kōroiti mārama, ā, tirohia tōna whakawhiti mārama. Ko te teitei ake o te whakawhiti mārama, ko te pai ake, e tohu ana he iti ake ngā matū kore-rewa i roto. He pai te urunga o ngā tauhohenga poutū, engari he kino ake te urunga o ngā tauhohenga whakapae.
4. Te ōwehenga
Ko te nui ake o te taumaha motuhake, ko te taumaha ake, ko te pai ake. He nui te motuhaketanga, i te nuinga o te wā nā te mea he nui te ihirangi o te rōpū hydroxypropyl i roto, ā, he nui te ihirangi o te rōpū hydroxypropyl, he pai ake te pupuri wai.
Wā tuku: Paenga-whāwhā-25-2024