kotahi. Ko te rerekētanga i waenga i te mea kua whakakinotiahydroxypropyl methylcellulose (HPMC)me te hydroxypropyl methylcellulose parakore (HPMC)
1. Āhua: He āhua puhoi te āhua o te hydroxypropyl methylcellulose HPMC parakore, ā, he iti te matotoru o te matū, mai i te 0.3-0.4g/ml; he pai ake te rere o te hydroxypropyl methylcellulose HPMC kua whakaranua, ā, he taumaha ake te āhua, ā, he rerekētanga nui te āhua mai i te hua tūturu.
2. Tūnga: He muka te paura HPMC hydroxypropyl methylcellulose parakore i raro i te karuārai, i te karāhe whakanui rānei; ko te HPMC hydroxypropyl methylcellulose kua whakaranua ka kitea hei totoka, hei tioata rānei i raro i te karuārai, i te karāhe whakanui rānei.
3. Kakara: Kāore e hongi te haunga o te haukini, te māngaro me te waipiro i roto i te hydroxypropyl methylcellulose HPMC parakore; ka hongi te hydroxypropyl methylcellulose HPMC kua whakaranua i ngā momo kakara katoa, ahakoa he koretake, ka ahua taumaha.
4. Wairewa wai: he mārama te wairewa wai hydroxypropyl methylcellulose HPMC parakore, he nui te whakawhiti mārama, he tere pupuri wai ≥ 97%; he pōuri te wairewa wai hydroxypropyl methylcellulose HPMC kua whakaranua, ā, he uaua ki te eke ki te 80% te tere pupuri wai.
Tuarua, ko te pupuri wai o te hydroxypropyl methylcellulose HPMC, e wehewehe ana i ngā painga me ngā ngoikoretanga:
Ko te pupuri wai o te methyl cellulose ether i raro i ngā āhuatanga pāmahana teitei he tohu nui hei wehewehe i te kounga o te methyl cellulose ether. Ka pāngia te tere o te mimiti o te wai i roto i te moata sima me ngā hua gypsum e ngā āhuatanga pēnei i te pāmahana hau me te tere o te pēhanga hau. Nō reira, i ngā wā rerekē, he rerekētanga kei roto i te pānga pupuri wai o ngā hua me te nui o te HPMC i tāpirihia. I roto i te hanganga motuhake, ka taea te whakarerekē i te pānga pupuri wai o te paru mā te whakanui ake, te whakaiti rānei i te nui o te HPMC i tāpirihia. Ka taea e ngā hua HPMC hydroxypropyl methylcellulose pai rawa atu te whakaoti rapanga o te pupuri wai i raro i te pāmahana teitei.
Ka taea te whakamarara ōrite me te whai hua i te methylcellulose kounga teitei ki roto i te moata sima me ngā hua e ahu mai ana i te gypsum, ka takai i ngā matūriki totoka katoa, ka hanga he kiriata mākū, ka tukuna mārire te makuku i roto i te turanga mō te wā roa, ā, ko te tauhohenga waikura kore-ora o te rauemi kua whakakīia ka whakarite i te kaha here me te kaha pēhi o te rauemi. Ko te hydroxypropyl methylcellulose HPMC kounga teitei, he tino pai tōna ōritetanga, ko ōna rōpū methoxy me te hydroxypropoxy he ōrite te tohatoha puta noa i te mekameka ngota cellulose, ka taea te whakanui ake i te hāora i runga i ngā here hydroxyl me te ether. Ko te kaha o ngā ngota ki te hono ki te wai hei hanga hononga hauwai ka huri i te wai kore utu hei wai here, kia pai ai te whakahaere i te mimiti wai i puta mai i te pāmahana teitei o te rangi, kia tutuki ai te pupuri wai nui.
Nō reira, i roto i ngā hanganga raumati pāmahana teitei, kia tutuki ai te pānga pupuri wai, me tāpiri ngā hua HPMC kounga teitei i roto i ngā rahinga e tika ana kia rite ki te tauira, ki te kore, ka kore e ranea te makuku, ka ngoikore te kaha, ka pakaru, ka pakaru, ka marere hoki ngā raruraru, engari ka piki ake hoki te uauatanga o te hanganga o ngā kaimahi. I te hekenga o te pāmahana, ka taea te whakaiti haere i te nui o te wai HPMC e tāpirihia ana, ā, ka taea te whakatutuki i te pānga pupuri wai ōrite.
3. Te whakarewatanga o te hydroxypropyl methylcellulose HPMC
I roto i te umanga hanga, he maha ngā wā ka tukuna te hydroxypropyl methylcellulose HPMC ki roto i te wai kūpapa, ā, ka whakarewahia te hua HPMC anake hei aromatawai i te tere whakarewa. I muri i te whakatakotoranga ki roto i te wai kūpapa anake, ko te hua e tere pupū ana me te kore e marara he hua kāore he maimoatanga mata; i muri i te whakatakotoranga ki roto i te wai kūpapa anake, ko te hua ka taea te marara me te kore e pupū tahi he hua me te maimoatanga mata. Ina whakarewahia te hydroxypropyl methylcellulose HPMC kāore i te maimoatia te mata, ka tere te whakarewa o tōna matūriki kotahi, ka hanga he kiriata tere, ka kore te wai e uru ki ētahi atu matūriki, ka hua ake te kohikohi me te whakakotahi, e kiia nei ko te whakarewa puhoi i roto i te hua mākete.
Ko ngā matūriki hua HPMC hydroxypropyl methylcellulose kua tukatukahia ki te mata, i roto i te wai kūpapa, ka taea te marara i ngā matūriki takitahi me te kore e whakakotahi, engari kāore e tere te matotoru o te hua. I muri i te rumakina mō tētahi wā, ka whakangaromia te hanganga matū o te maimoatanga mata, ā, ka taea e te wai te whakarewa i ngā matūriki HPMC. I tēnei wā, kua tino marara ngā matūriki hua, ā, kua mimitihia te wai, nō reira kāore te hua e whakakotahi, e whakakotahi rānei i muri i te whakarewanga. Ko te tere marara me te tere whakarewa ka whakawhirinaki ki te nui o te maimoatanga mata. Mena he iti te maimoatanga mata, he puhoi te tere marara, ā, he tere te tere piri; ko te hua me te maimoatanga mata hohonu he tere marara me te tere piri puhoi. Mena kei te hiahia koe kia tere te memeha o tēnei raupapa hua i roto i tēnei āhua, ka taea e koe te maturuturu i te iti o ngā matū kawakore ina memeha takitahi. Ko te mākete o nāianei e kiia ana ko ngā hua inamata. Ko ngā āhuatanga o ngā hua HPMC kua tukatukahia ki te mata ko: i roto i te otinga wai, ka taea e ngā matūriki te marara tetahi ki tetahi, ka tere te memeha i roto i te āhua kawakore, ā, ka puhoi te memeha i roto i te āhua kūpapa me te waikawa.
Ko ngā āhuatanga o te HPMC hydroxypropyl methylcellulose kāore i rongoatia: ka tere te rewa o te matūriki kotahi i roto i ngā āhua waikawa, kawakore, me te koretake, engari kāore e taea te horapa i waenga i ngā matūriki i roto i te wai, ka hua ake he puranga me te whakakotahitanga. I roto i te mahi tūturu, i muri i te mararatanga ā-tinana o tēnei raupapa hua me ngā matūriki totoka pēnei i te paura rapa, te sima, te onepu, me ētahi atu, he tino tere te tere rewa, ā, kāore he whakakotahitanga, he whakakotahitanga rānei. Ina hiahiatia kia rewa motuhake ngā hua HPMC, me tūpato te whakamahi i tēnei raupapa hua, nā te mea ka rewa, ka piri tahi. Mena e hiahiatia ana kia rewa motuhake te hua HPMC hydroxypropyl methylcellulose kāore i rongoatia ki te mata, me horahia kia ōrite ki te wai wera 95°C, kātahi ka whakamatao kia rewa.
I roto i ngā mahi whakaputa tūturu, ka memeha haere tēnei raupapa hua i muri i te whakamararatanga ki ētahi atu rauemi matūriki totoka i raro i ngā āhuatanga kawakore, ā, kāore tōna tere memeha i rerekē i tērā o ngā hua kāore i te rongoatia. He pai hoki mō te whakamahi i roto i ngā hua ka memeha takitahi, kāore he kirikiri, he puranga rānei. Ka taea te whiriwhiri i te tauira motuhake o te hua i runga i te tere memeha e hiahiatia ana e te hanganga.
I te wā o te hanganga, ahakoa he moata sima, he parai rānei i ahu mai i te gypsum, he maha ngā pūnaha kawakore, ā, he iti noa te nui o te HPMC i tāpirihia, ka taea te horapa ōrite ki waenga i ēnei matūriki. Ina tāpirihia te wai,HPMCka tere te memeha.
Wā tuku: Paenga-whāwhā-26-2024