Hydroxypropyl methylcelluloseHPMChe ether non-ionic cellulose i hana ʻia mai ka cellulose material polymer maoli ma o ke ʻano o ka hana kemika.He pauda keʻokeʻo ʻaʻala ʻole, ʻono a ʻona ʻole e pehu ana i loko o ka wai anuanu a hiki i kahi hopena colloidal maʻemaʻe a haʻalulu iki paha.Loaʻa iā ia nā waiwai o ka mānoanoa, hoʻopaʻa, dispersing, emulsifying, film-forming, suspending, adsorbing, gelling, surface-active, mālama i ka moisture a me ka colloid pale.Hiki ke hoʻohana ʻia ka Hydroxypropyl methylcellulose, methylcellulose i nā mea kūkulu hale, ʻoihana uhi, resin synthetic, ʻoihana ceramics, lāʻau lapaʻau, meaʻai, textile, mahiʻai, kemika o kēlā me kēia lā a me nā ʻoihana ʻē aʻe.
ʻO ka hopena paʻa wai a me ke kumu o ka hydroxypropyl methylcellulose HPMC
ʻO ka cellulose ether HPMC ka mea nui o ka paʻa ʻana o ka wai a me ka mānoanoa i ka mortar sima a me ka gypsum-based slurry, hiki ke hoʻomaikaʻi maikaʻi i ka cohesion a me ka pale ʻana o ka slurry.
ʻO nā mea e like me ke ea wela, ka mahana a me ke kaomi makani e hoʻopili i ka nui o ka volatilization o ka wai i loko o ka mortar sima a me nā huahana gypsum.No laila, i nā kau like ʻole, aia kekahi mau ʻokoʻa i ka hopena paʻa wai o nā huahana me ka nui o ka HPMC i hoʻohui ʻia.Ma ke kūkulu kikoʻī, hiki ke hoʻoponopono ʻia ka hopena paʻa wai o ka slurry ma ka hoʻonui a hoʻemi ʻana i ka nui o ka HPMC i hoʻohui ʻia.ʻO ka paʻa ʻana o ka wai o ka methyl cellulose ether i ka wela kiʻekiʻe he hōʻailona koʻikoʻi ia e ʻike ai i ka maikaʻi o ka methyl cellulose ether.Hiki i nā huahana HPMC maikaʻi ke hoʻoponopono i ka pilikia o ka mālama ʻana i ka wai ma lalo o ke kiʻekiʻe wela.I nā kau wela kiʻekiʻe, ʻoi aku hoʻi ma nā wahi wela a maloʻo a me ka hana ʻana i nā ʻāpana lahilahi ma ka ʻaoʻao o ka lā, pono ka HPMC kiʻekiʻe e hoʻomaikaʻi i ka paʻa ʻana o ka wai o ka slurry.ʻO ka HPMC kūlana kiʻekiʻe, me ke kūlike maikaʻi loa, ua māhele like ʻia kāna mau methoxy a me nā pūʻulu hydroxypropoxy ma ke kaulahao mole cellulose, hiki ke hoʻomaikaʻi i ka hiki o nā ʻātoma oxygen ma ka hydroxyl a me nā paʻa ether e hui pū me ka wai e hana i nā paʻa hydrogen, no laila. lilo ka wai manuahi i ka wai paʻa, i mea e hoʻomalu pono ai i ka hoʻoheheʻe ʻana o ka wai i hana ʻia e ka wela wela a loaʻa ka paʻa wai kiʻekiʻe.
High-quality cellulose HPMC hiki ke uniformly a me ka hoʻopuehu pono i loko o ka sima a me ka gypsum-ma muli huahana, a encapsulates a pau paʻa particles, a hana i ka wetting kiʻiʻoniʻoni, a me ka moisture i loko o ke kumu ua hoʻokuʻu lohi ma luna o ka lōʻihi manawa.Hoʻomaka ka hopena hydration o ka mea coagulating, e hōʻoia i ka ikaika paʻa a me ka ikaika compressive o ka mea.No laila, i ke kūkulu ʻana i ke kauwela kiʻekiʻe, i mea e hoʻokō ai i ka hopena o ka paʻa ʻana o ka wai, pono e hoʻohui i nā huahana HPMC kiʻekiʻe e like me ke ʻano, i ʻole, ʻaʻole lawa ka hydration, hoʻemi ikaika, pohā, hollowing a hāʻule. ma muli o ka maloʻo ʻana.Hoʻonui ia i ka paʻakikī o ke kūkulu ʻana i nā limahana.I ka emi ʻana o ka mahana, hiki ke hoʻemi ʻia ka nui o ka HPMC, a hiki ke hoʻokō ʻia ka hopena paʻa wai like.
ʻO ka paʻa ʻana o ka wai o ka huahana hydroxypropyl methylcellulose HPMC ponoʻī e hoʻopilikia pinepine ʻia e nā kumu penei:
1. Cellulose ether HPMC homogeneity
Loaʻa i ka HPMC i hoʻohālikelike like ʻia nā pūʻulu methoxy a me hydroxypropoxy a me ka paʻa wai kiʻekiʻe.
2. Cellulose ether HPMC wela gel wela
ʻOi aku ka kiʻekiʻe o ka wela gel wela, ʻoi aku ka kiʻekiʻe o ka paʻa wai;a i ʻole, ʻoi aku ka haʻahaʻa o ka paʻa wai.
3. Cellulose ether HPMC viscosity
Ke piʻi ka viscosity o HPMC, piʻi pū ka nui o ka mālama ʻana i ka wai;ke piʻi ka viscosity i kahi pae, ʻoi aku ka maʻalahi o ka piʻi ʻana o ka paʻa wai.
4. Cellulose ether HPMC huina hoonui
ʻOi aku ka nui o ka cellulose ether HPMC, ʻoi aku ka kiʻekiʻe o ka paʻa wai a ʻoi aku ka maikaʻi o ka hopena paʻa wai.Ma ka laulā o 0.25-0.6%, piʻi wikiwiki ka paʻa wai me ka piʻi ʻana o ka nui hoʻohui;ke piʻi aʻe ka nui o ka hoʻohui, ʻoi aku ka lohi o ka piʻi ʻana o ka paʻa wai.
Ka manawa hoʻouna: Oct-20-2022