Ko te hydroxypropyl methylcellulose te nuinga o te wā e whakamahia ana hei whakamarara i roto i te hanga o te polyvinyl chloride, ā, koia te kaiāwhina 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 piri, 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 me te whakamātotoru i te wai, ka taea ai te whakapai ake i te kaha piri me te ātete totoro o te paru. Ko ngā āhuatanga pēnei i te pāmahana hau, te pāmahana me te tere o te pēhanga hau ka pā ki te tere mimiti o te wai i roto i te moata sima me ngā hua gypsum. 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 hydroxypropyl methyl cellulose ether. Ka taea e ngā hua raupapa hydroxypropyl methylcellulose pai te whakaoti pai i te raruraru o te pupuri wai i raro i te pāmahana teitei. I ngā wā pāmahana teitei, 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 hydroxypropyl methylcellulose (HPMC) kounga teitei. He ōrite te tohatoha o ōna rōpū methoxy me te hydroxypropoxy i te mekameka ngota cellulose, ka taea te whakanui ake i ngā ngota hāora i runga i ngā here hydroxyl me te ether. Mā te kaha ki te hono atu ki te wai hei hanga here hauwai ka huri te wai kore utu hei wai here, ā, ka whakahaere pai i te mimiti wai i puta mai i te pāmahana teitei o te rangi, ka tutuki ai te pupuri wai nui. E hiahiatia ana te wai mō te whakamakuku kia taea ai te whakatakoto 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 hydroxypropyl methylcellulose (HPMC) e hiahiatia ana hei pupuri i te wai e tika ana, e whakawhirinaki ana ki:
Te mimiti o te paparanga turanga
Te Hanganga o te Moata
Te matotoru o te paparanga moata
Te hiahia mō te wai moata
Te wā whakatakoto o te rauemi sima
Ka taea te whakamarara ōrite me te whai hua i te Hydroxypropyl methylcellulose 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 mo te wā roa, ā, he hototahi ki te kore-waro. Ko te tauhohenga makuku o te rauemi kua werohia ka 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: Paenga-whāwhā-10-2023