Ko te Hydroxypropyl methylcellulose, e kiia nei ko: HPMC, MHPC rānei. He paura mā, he paura mā-parauri rānei te āhua; ko te whakamahinga matua he mea whakamarara i roto i te hanga o te polyvinyl chloride, ā, koia te mea āwhina matua mō te whakarite i te PVC mā te whakapūtātanga polymerization. I roto i te tukanga hanga o te umanga hanga, e whakamahia ana i roto i ngā hanganga mīhini pērā i te hanga pakitara, te parai, te whakakīkī, me ētahi atu; inā koa i roto i te hanganga whakapaipai, e whakamahia ana hei whakapiri i ngā taera uku, te māpere, me ngā whakapaipai kirihou. He kaha te here, ā, ka taea te whakaiti i te nui o te sima. . E whakamahia ana hei whakamātotoru i roto i te umanga peita, ka taea te hanga i te paparanga kia kanapa, kia ngawari, te aukati i te tango paura, te whakapai ake i te mahi whakataurite, me ētahi atu.
I roto i te moata sima me te paru gypsum, ko te hydroxypropyl methylcellulose te nuinga o te mahi hei pupuri wai me te whakamātotoru, ka taea ai te whakapai ake i te kaha piri me te ātete totoro o te paru.
Ka pāngia te tere o te mimiti o te wai i roto i te moata sima me ngā hua e hangai ana ki te gypsum e ngā āhuatanga pēnei i te pāmahana o te 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 hydroxypropyl methylcellulose i tāpirihia.
I roto i te hanganga motuhake, ka taea te whakarite i te pānga pupuri wai o te paru mā te whakanui ake, te whakaiti rānei i te nui o te HPMC i tāpirihia. 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 taea e ngā hua raupapa hydroxypropyl methylcellulose tino pai te whakaoti rapanga o te pupuri wai i raro i te pāmahana tiketike. I ngā wā pāmahana tiketike, inā koa i ngā wāhi wera me te maroke me te hanganga paparanga angiangi i te taha paki, me whakamahi HPMC kounga teitei hei whakapai ake i te pupuri wai o te paru.
He tino pai te ōritetanga o te HPMC kounga teitei. He ōrite te tohatoha o ōna rōpū methoxy me te hydroxypropoxy i roto i te mekameka ngota cellulose, ka taea te whakapai ake i te kaha o ngā ngota hāora i runga i ngā hononga hydroxyl me te ether ki te hono atu ki te wai hei hanga hononga hauwai. , kia noho ai te wai kore utu hei wai here, kia pai ai te whakahaere i te mimiti o te wai i puta mai i te pāmahana teitei, kia tutuki ai te pupuri wai teitei.
E hiahiatia ana te wai hei whakamakuku i ngā rauemi sima pērā i te sima me te gypsum. Mā te nui tika o te HPMC ka taea te pupuri i te makuku i roto i te moata mō te wā roa kia taea ai te haere tonu o te tukanga whakatakoto me te whakapakeke.
Ko te nui o te HPMC e hiahiatia ana hei pupuri i te wai e tika ana, e whakawhirinaki ana ki:
1. Te mimiti o te paparanga turanga
2. Te hanganga o te moata
3. Te matotoru o te paparanga moata
4. Te hiahia wai mō te moata
5. Te wā whakatakoto o te rauemi whakapūkara
Ka taea te whakamarara i te hydroxypropyl methylcellulose kounga teitei ki roto i te moata sima me ngā hua gypsum, ka takai i ngā matūriki totoka katoa, ka hanga he kiriata whakamakuku, ā, ka tukuna mārire te makuku i roto i te turanga mō te wā roa, ā, ka tauhohe te waikura ki te rauemi whakapūkara kore-waro hei whakarite i te kaha here me te kaha pēhi o te rauemi.
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.
Wā tuku: Hanuere-16-2023