I tēnei wā, he rerekē rawa te kounga o te hydroxypropyl methylcellulose o te whare, ā, he rerekē rawa hoki te utu, he uaua ki ngā kaihoko te whiriwhiri tika. Ko te HPMC kua whakarerekētia o taua kamupene ke te hua o ngā tau maha o te rangahau. Mā te tāpiri i ētahi matū iti ka taea te whakapai ake i te mahi hanga me te whakapai ake i te whakahaere. Ae, ka pā ki ētahi atu āhuatanga, engari i te nuinga o te wā he whai hua; Ko te kaupapa anake o te tāpiri i ētahi atu kai ko te whakaiti i ngā utu, ka hua ake he iti rawa te pupuri wai, te piripono me ētahi atu āhuatanga o te hua, ka hua ake he maha ngā raruraru kounga hanga.
Anei ngā rerekētanga i waenga i te HPMC parakore me te HPMC whakaranu:
1. He puhoi te āhua o te HPMC parakore, ā, he iti te mātotoru o te papatipu, mai i te 0.3-0.4g/ml; he pai ake te rere o te HPMC kua whakaranua, ā, he taumaha ake te āhua, he rerekē te āhua mai i te hua tuturu.
2. He mārama te wai HPMC parakore, he nui te whakawhiti mārama, ā, he ≥ 97% te tere pupuri wai; he kapua te wai HPMC kua whakaranua, ā, he uaua ki te eke ki te 80% te tere pupuri wai.
3. Kaua te HPMC parakore e hongi i te haukini, te māngaro me te waipiro; he maha ngā momo hongi ka hongi i te HPMC kua whakaranua, ahakoa he kore reka, ka taumaha tonu.
4. He muka te paura HPMC parakore i raro i te karuārai, i te karāhe whakanui rānei; ka kitea te HPMC kua whakaranua hei totoka, hei tioata rānei i raro i te karuārai, i te karāhe whakanui rānei.
He teitei e kore e taea te piki, e 200,000?
He maha ngā tohunga me ngā mātauranga o roto kua whakaputa tuhinga e whakapono ana he mea here te hanga HPMC e te haumaru me te hiri o ngā taputapu o roto, te tukanga paru me te hanga pēhanga iti, ā, kāore e taea e ngā umanga noa te whakaputa hua he matotoru neke atu i te 200,000. I te raumati, kāore e taea te whakaputa hua he matotoru neke atu i te 80,000. E whakapono ana rātou ko ngā hua e kiia nei ko te 200,000 he hua rūpahu.
Kāore i te koretake ngā tautohe a te tohunga. E ai ki te āhuatanga o te hanga ā-rohe o mua, ka taea te whakatau i ngā whakatau kua whakahuatia ake nei.
Ko te mea nui ki te whakanui ake i te matotoru o te HPMC ko te hiri nui o te tauhohenga me te tauhohenga pēhanga teitei me ngā rauemi mata kounga teitei. Mā te ātete hau teitei ka ārai i te pakaru o te cellulose e te hāora, ā, mā te āhua tauhohenga pēhanga teitei ka whakatairanga i te urunga o te kaihoko etherification ki roto i te cellulose, ā, ka whakarite kia ōrite te hua.
Ko te taupū taketake o te 200000cps hydroxypropyl methylcellulose:
2% te matotoru o te wairewa 200000cps
Te parakore o te hua ≥98%
Te ihirangi metoksi 19-24%
Te ihirangi o te hydroxypropoxy: 4-12%
Ngā āhuatanga o te 200000cps hydroxypropyl methylcellulose:
1. He tino pai ngā āhuatanga pupuri wai me te whakamātotoru hei whakarite i te makuku katoa o te paru.
2. He kaha te here me te kaha ki te kuhu i te hau, ā, he pai te aukati i te mimiti me te ngatata.
3. Whakaroa i te tukunga wera o te makuku sima, whakaroa i te wā whakatakoto, me te whakahaere i te wā mahi o te moata sima.
4. Whakapai ake i te ōritetanga wai o te moata papu, whakapai ake i te rheology, me te ārai i te wehewehe me te toto.
5. Ngā hua motuhake, e aro ana ki te taiao hanga pāmahana teitei i te raumati, hei whakarite kia pai te makuku o te paru me te kore e wehewehe.
Nā te ngoikore o te tirotiro i te mākete, kei te kaha haere te whakataetae i roto i te umanga moata. Hei whakatutuki i te hiahia o te mākete, kua whakaranua e ētahi kaihokohoko he nui o ngā matū iti te utu hei hanga i te cellulose ether iti te utu. I konei, me whakamahara te ētita ki ngā kaihoko kia kaua e whai noa i ngā utu iti, kia kore ai e mamingatia, kia kore ai e arahi ki ngā aituā hangarau, ā, i te mutunga ka nui ake ngā mate i ngā hua.
Ngā tikanga whakapohehe me ngā tikanga tautuhi noa:
(1) Mā te tāpiri o te amide ki te cellulose ether ka tere te whakanui ake i te matotoru o te otinga cellulose ether, ā, kāore e taea te tautuhi mā te whakamahi i te viscometer.
Tikanga tautuhi: Nā ngā āhuatanga o ngā amides, he maha ngā wā ka puta he āhua aho o tēnei momo otinga cellulose ether, engari kāore e puta he āhua aho i muri i te whakarewanga o te cellulose ether pai, he rite te otinga ki te tiēre, e kiia nei he piri engari kāore i te hono.
(2) Tāpirihia te māngaro ki te cellulose ether. Kāore te māngaro e wairewa i te nuinga o te wā i roto i te wai, ā, he ngoikore te whakawhiti mārama o te otinga.
Tikanga tautuhi: Ringihia te wairewa cellulose ether ki te iodine, ki te huri te tae ki te kikorangi, ka taea te whakaaro kua tāpirihia he māngaro.
(3) Tāpirihia te paura waipiro polyvinyl. E mōhio ana tātou katoa, ko te utu mākete mō te paura waipiro polyvinyl pērā i te 2488 me te 1788 he iti iho i te utu o te cellulose ether, ā, mā te whakaranu i te paura waipiro polyvinyl ka taea te whakaiti i te utu o te cellulose ether.
Tikanga tautuhi: He maha ngā wā he kirikiri, he kikī hoki tēnei momo cellulose ether. Ka tere te memeha ki te wai, mā te whakamahi i te tokotoko karāhe ka kōwhiri i te otinga, ka kitea he āhua honohono mārama ake.
Whakarāpopototanga: Nā tōna hanganga me ōna rōpū motuhake, kāore e taea te whakakapi i te pupuri wai o te cellulose ether e ētahi atu matū. Ahakoa te momo whakakī e konatunatua ana, mena ka konatunatua ki te nui, ka tino whakaitihia tōna pupuri wai. Ko te nui o te HPMC me te matotoru noa o te 10W i roto i te moata noa ko te 0.15~0.2‰, ā, ko te tere pupuri wai he >88%. He nui ake te kino o te toto. Nō reira, ko te tere pupuri wai he tohu nui hei ine i te kounga o te HPMC, ahakoa he pai, he kino rānei, mena ka tāpirihia ki te moata, ka mārama i te tirohanga kotahi.
Wā tuku: Mei-10-2023