Pehea e hoʻoholo ai i ka maikaʻi o Hydroxypropyl Methyl Cellulose HPMC?

(1). ʻO ka ʻokoʻa ma waena o ka adulterated hydroxypropyl methylcellulose (HPMC) a me ka hydroxypropyl methylcellulose maʻemaʻe (HPMC)
1. Ke 'ano: Pure hydroxypropyl methylcellulose HPMC nānā fluffy a he haʻahaʻa bulk density, mai ka 0.3-0.4g/ml; adulterated hydroxypropyl methylcellulose HPMC 'oi aku ka maika'i o ka wai a 'oi aku ka kaumaha, a he 'oko'a ko'iko'i ka hi'ohi'ona mai ka huahana maoli.
2. Kūlana: He fibrous ka pauka HPMC hydroxypropyl methylcellulose maʻemaʻe ma lalo o kahi microscope a i ʻole aniani hoʻonui; ʻoiai hiki ke ʻike ʻia ka HPMC hydroxypropyl methylcellulose adulterated ma ke ʻano he paʻa paʻa a i ʻole nā ​​kristal ma lalo o kahi microscope a i ʻole aniani hoʻonui.

3. ʻAla: ʻAʻole hiki i ka HPMC hydroxypropyl methylcellulose maʻemaʻe ke honi i ke ʻala o ka amonia, starch a me ka waiʻona; Hiki ke honi ka HPMC hydroxypropyl methylcellulose adulterated i nā ʻano ʻala a pau, ʻoiai inā ʻaʻole ʻono, kaumaha ke kaumaha.
4. Waiwai wai: maʻemaʻe hydroxypropyl methylcellulose HPMC aqueous solution aqueous, kiʻekiʻe māmā transmittance, wai paʻa ≥ 97%; adulterated hydroxypropyl methylcellulose HPMC aqueous solution is turbid, and the water retention rate is paʻakikī a hiki i 80%.

(2), ka paʻa wai o ka hydroxypropyl methylcellulose HPMC, hoʻokaʻawale i nā pono a me nā hemahema:

ʻO ka paʻa wai o ka methyl cellulose ether ma lalo o nā kūlana wela kiʻekiʻe he hōʻailona koʻikoʻi ia e ʻike ai i ka maikaʻi o ka methyl cellulose ether. ʻO nā mea e like me ke ea wela, ka mahana a me ka wikiwiki o ka 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. Hiki i nā huahana HPMC hydroxypropyl methylcellulose maikaʻi ke hoʻoponopono i ka pilikia o ka paʻa ʻana o ka wai ma lalo o ka wela kiʻekiʻe.

Hiki i ka methylcellulose kiʻekiʻe kiʻekiʻe ke hoʻoheheʻe ʻia a hoʻopuehu maikaʻi ʻia i loko o ka mortar sima a me nā huahana gypsum, a kāwili i nā ʻāpana paʻa a pau, a hana i kahi kiʻi ʻoniʻoni, hoʻokuʻu mālie ʻia ka wai ma ke kumu no ka manawa lōʻihi, a me ka inorganic ʻO ka hopena hydration. ʻO ka mea gelled e hōʻoia i ka ikaika paʻa a me ka ikaika compressive o ka mea. ʻO ka hydroxypropyl methylcellulose HPMC kiʻekiʻe, maikaʻi loa kona ʻano like ʻole, ua māhele like ʻia kāna methoxy a me nā hui hydroxypropoxy ma ke kaulahao mole cellulose, hiki iā ia ke hoʻonui i ka oxygen ma nā paʻa hydroxyl a me ether ʻO ka hiki o nā atoms e hui me ka wai e hana i nā paʻa hydrogen. hoʻololi i ka wai manuahi i wai paʻa, a laila e hoʻomalu pono i ka hoʻoheheʻe ʻana o ka wai ma muli o ke anuanu kiʻekiʻe a loaʻa ka paʻa wai kiʻekiʻe.
No laila, i ke kūkulu ʻana i ke kauwela kiʻekiʻe, i mea e hoʻokō ai i ka hopena paʻa wai, pono e hoʻohui i nā huahana HPMC kiʻekiʻe i ka nui e like me ke ʻano, i ʻole, ʻaʻole lawa ka hydration, hoʻemi ʻia ka ikaika, māwae, hollowing. a me ka hoʻoheheʻe ʻana ma muli o ka maloʻo nui ʻana. nā pilikia, akā hoʻonui pū i ka paʻakikī o ka hana ʻana o nā limahana. I ka hāʻule ʻana o ka mahana, hiki ke hoʻemi ʻia ka nui o ka wai HPMC i hoʻohui ʻia, a hiki ke hoʻokō ʻia ka hopena paʻa wai like.

(3) Hoʻopau i ka hydroxypropyl methylcellulose HPMC

I ka ʻoihana kūkulu hale,hydroxypropyl methylcellulose HPMCHoʻokomo pinepine ʻia i loko o ka wai kū ʻole, a hoʻoheheʻe ʻia ka huahana HPMC wale nō e hoʻoholo i ka helu hoʻoheheʻe. Ma hope o ka waiho ʻia ʻana i loko o ka wai kū ʻole wale nō, ʻo ka huahana e puʻupuʻu koke me ka ʻole o ka hoʻopuehu ʻana he huahana me ka mālama ʻole ʻia o ka ʻili; ma hope o ka waiho ʻia ʻana i loko o ka wai kūʻokoʻa wale nō, ʻo ka huahana hiki ke hoʻopuehu a ʻaʻole hui pū kekahi huahana me ka mālama ʻana i ka ʻili. Ke hoʻoheheʻe wale ʻia ka HPMC hydroxypropyl methylcellulose i hoʻoponopono ʻole ʻia, hoʻoheheʻe ʻia kāna mea hoʻokahi me ka wikiwiki a hana i kahi kiʻiʻoniʻoni, e hoʻoneʻe ana i ka wai e komo hou i nā mea ʻē aʻe, e hopena i ka agglomeration a me ka agglomeration, ka mea i kapa ʻia i kēia manawa he lohi lohi i ka huahana mākeke.

Hiki ke hoʻopuehu ʻia nā ʻāpana o kēlā me kēia me ka ʻole o ka agglomeration, akā ʻaʻole koke ka viscosity o ka huahana. Ma hope o ka hoʻoulu ʻana no kekahi manawa, ua luku ʻia ke ʻano kemika o ka mālama ʻana i ka ʻili, a hiki i ka wai ke hoʻoheheʻe i nā ʻāpana HPMC. I kēia manawa, ua hoʻopuehu piha ʻia nā ʻāpana huahana a ua lawa ka wai, no laila ʻaʻole e hōʻuluʻulu a hoʻopaʻa ʻia ka huahana ma hope o ka hemo ʻana. ʻO ka wikiwiki o ka hoʻopuehu ʻana a me ka wikiwiki o ka hemo ʻana ma muli o ke ʻano o ka mālama ʻana i ka ʻili. Inā liʻiliʻi ka mālama ʻana i ka ʻili, lohi ka wikiwiki o ka hoʻopuehu ʻana a me ka wikiwiki pipili; ʻoiai ʻo ka huahana me ka mālama ʻana i ka ʻili hohonu he wikiwiki ka hoʻopuehu ʻana a me ka wikiwiki pipili. Inā makemake ʻoe e hoʻoheheʻe koke i kēia pūʻulu o nā huahana i kēia mokuʻāina, hiki iā ʻoe ke hāʻule i kahi liʻiliʻi o nā mea alkaline ke hoʻoheheʻe ʻia lākou. ʻO ka mākeke o kēia manawa i kapa ʻia ʻo nā huahana koke. ʻO nā hiʻohiʻona o nā huahana HPMC i mālama ʻia i ka ʻili: i loko o ka wai, hiki i nā ʻāpana ke hoʻopuehu me kekahi, hiki ke hoʻoheheʻe koke i ke kūlana alkaline, a hoʻoheheʻe mālie i ke kūlana kūʻokoʻa a me ka acidic.

ʻO nā hiʻohiʻona o ka HPMC hydroxypropyl methylcellulose i hoʻoponopono ʻole ʻia he: hoʻoheheʻe ʻia kahi ʻāpana hoʻokahi i ka ʻakika, alkaline, a me nā kūlana kūʻokoʻa, akā ʻaʻole hiki ke hoʻopuehu ma waena o nā ʻāpana i loko o ka wai, ka hopena i ka hui ʻana a me ka agglomeration. Ma ka hana maoli, ma hope o ka hoʻopuehu kino ʻana o kēia pūʻulu o nā huahana a me nā ʻāpana paʻa e like me ka pauka rubber, cement, one, etc., wikiwiki loa ka dissolution rate, ʻaʻohe agglomeration a i ʻole agglomeration. I ka wā e pono ai e hoʻopau kaʻawale i nā huahana HPMC, pono e hoʻohana ʻia kēia pūʻulu o nā huahana me ka akahele, no ka mea, e hōʻuluʻulu a paʻa pū. Inā pono e hoʻoheheʻe i ka huahana non-surface hydroxypropyl methylcellulose HPMC ma kahi kaʻawale, pono e hoʻopuehu like ʻia me ka wai wela 95 ° C, a laila hoʻomaloʻo e hoʻoheheʻe.

Ma ka hana hana maoli, hoʻoheheʻe pinepine ʻia kēia pūʻulu o nā huahana ma hope o ka hoʻopuehu ʻia ʻana me nā mea ʻāpana paʻa ʻē aʻe ma lalo o nā kūlana alkaline, a ʻaʻole ʻokoʻa kona helu dissolution me nā huahana i mālama ʻole ʻia. He kūpono no ka hoʻohana ʻana i nā huahana i hoʻoheheʻe wale ʻia, me ka ʻole o ka caking a i ʻole lumps. Hiki ke koho ʻia ke kumu hoʻohālike kikoʻī o ka huahana e like me ka helu dissolution i koi ʻia e ke kūkulu ʻana.
I loko o ke kaʻina hana, ʻo ia ka mortar sima a i ʻole ka gypsum-based slurry, ʻo ka hapa nui o lākou he ʻōnaehana alkaline, a ʻo ka nui o ka HPMC i hoʻohui ʻia he liʻiliʻi loa, hiki ke hoʻopuehu like ʻia i waena o kēia mau ʻāpana. Ke hoʻohui ʻia ka wai, e hemo koke ka HPMC.