Ka paʻa ʻana o ka wai o ka hydroxypropyl methylcellulose ether
ʻO ka paʻa ʻana o ka wai o ka mortar hui maloʻo e pili ana i ka hiki o ka mortar ke paʻa a hoʻopaʻa i ka wai. ʻO ke kiʻekiʻe o ka viscosity o ka hydroxypropyl methylcellulose ether, ʻoi aku ka maikaʻi o ka paʻa ʻana o ka wai. No ka mea, aia i loko o ke ʻano cellulose nā pilina hydroxyl a me ether, pili nā ʻātoma oxygen ma nā hui pilina hydroxyl a me ether me nā molekala wai e hana i nā pilina hydrogen, i lilo ai ka wai manuahi i wai paʻa a hoʻopili i ka wai, no laila e pāʻani ana i kahi kuleana i ka paʻa ʻana o ka wai.
Ka hoʻoheheʻe ʻia ʻana o ka Hydroxypropyl Methyl Cellulose Ether
1. He maʻalahi ka hoʻopuehu ʻana o ka cellulose ether ʻāpana coarse i ka wai me ka ʻole o ka hoʻopili ʻana, akā lohi loa ka wikiwiki o ka hoʻoheheʻe ʻana. Hoʻoheheʻe ʻia ka cellulose ether ma lalo o 60 mesh i loko o ka wai no kahi o 60 mau minuke.
2. He maʻalahi ka hoʻopuehu ʻana o ka cellulose ether ʻāpana maikaʻi i ka wai me ka ʻole o ka hoʻohuihui ʻana, a he kūpono ka nui o ka hoʻoheheʻe ʻana. Hoʻoheheʻe ʻia ka cellulose ether ma luna o 80 mesh i ka wai no kahi o 3 mau minuke.
3. Hoʻopuehu koke ka cellulose ether ʻāpana maikaʻi loa i ka wai, hoʻoheheʻe koke, a hana koke i ka mānoanoa. Hoʻoheheʻe ʻia ka cellulose ether ma luna o 120 mesh i ka wai no kahi o 10-30 kekona.
ʻO ka ʻoi aku ka maikaʻi o nā ʻāpana o ka hydroxypropyl methylcellulose ether, ʻoi aku ka maikaʻi o ka paʻa ʻana o ka wai. Hoʻoheheʻe koke ka ʻili o ka cellulose ether coarse-grained ma hope o ka hoʻopili ʻana me ka wai a hana i kahi hanana gel. Hoʻopili ka glue i ka mea e pale ai i nā mole wai mai ka hoʻomau ʻana i ke komo ʻana. I kekahi manawa ʻaʻole hiki ke hoʻopuehu like ʻia a hoʻoheheʻe ʻia ma hope o ka hoʻoulu ʻana no ka manawa lōʻihi, e hana ana i kahi hopena flocculent ao a i ʻole ka agglomeration. Hoʻopuehu koke nā ʻāpana liʻiliʻi a hoʻoheheʻe ʻia ma hope o ka hoʻopili ʻana me ka wai e hana i kahi viscosity like.
Ka waiwai PH o ka hydroxypropyl methylcellulose ether (hopena hoʻopaneʻe a i ʻole ka hopena ikaika mua)
ʻO ka waiwai pH o nā mea hana hydroxypropyl methylcellulose ether ma ka home a me waho e kāohi ʻia ma kahi o 7, aia i loko o kahi mokuʻāina waikawa. No ka mea he nui nō nā ʻano apo anhydroglucose i loko o ke ʻano molekala o ka cellulose ether, ʻo ke apo anhydroglucose ka hui nui e hoʻoulu ai i ka lohi o ka sima. Hiki i ke apo anhydroglucose ke hana i nā ion calcium i loko o ka hopena hydration sima e hoʻoulu i nā hui molekala kō-calcium, e hoʻemi i ka nui o ka ion calcium i ka wā hoʻokomo o ka hydration sima, pale i ka hoʻokumu ʻana a me ka ua ʻana o ka calcium hydroxide a me nā kristal paʻakai calcium, a hoʻopaneʻe i ka hydration o ka sima. kaʻina hana. Inā aia ka waiwai PH i loko o kahi mokuʻāina alkaline, e ʻike ʻia ka mortar i kahi mokuʻāina ikaika mua. I kēia manawa, hoʻohana ka hapa nui o nā hale hana i ka sodium carbonate e hoʻoponopono i ka waiwai pH. ʻO ka sodium carbonate kahi ʻano mea hoʻonohonoho wikiwiki. Hoʻomaikaʻi ka sodium carbonate i ka hana o ka ʻili o nā ʻāpana sima, paipai i ka cohesion ma waena o nā ʻāpana, a hoʻomaikaʻi hou i ka viscosity o ka mortar. I ka manawa like, hui koke ka sodium carbonate me nā ion calcium i loko o ka mortar e paipai i ka hoʻokumu ʻana o ka ettringite, a hui koke ka sima. No laila, pono e hoʻoponopono ʻia ka waiwai pH e like me nā mea kūʻai aku like ʻole i ke kaʻina hana maoli.
Nā Waiwai Hoʻokomo Ea o Hydroxypropyl Methyl Cellulose Ether
ʻO ka hopena hoʻokomo ea o ka hydroxypropyl methylcellulose ether ma muli o ka cellulose ether he ʻano surfactant nō hoʻi. ʻO ka hana interfacial o ka cellulose ether e hana nui ʻia ma ka interface gas-liquid-solid. ʻO ka mea mua, ʻo ka hoʻokomo ʻana o nā pehu ea, a ukali ʻia e ka hoʻopuehu ʻana a me ka hopena Wetting. Loaʻa i ka Cellulose ether nā hui alkyl, kahi e hoʻemi nui ai i ka ʻili o ka ʻili a me ka ikehu interfacial o ka wai, e maʻalahi ai ka hana ʻana i nā pehu liʻiliʻi he nui i ka wā o ke kaʻina hana hoʻoulu o ka hopena wai.
Nā Waiwai Gel o Hydroxypropyl Methyl Cellulose Ether
Ma hope o ka hoʻoheheʻe ʻia ʻana o ka hydroxypropyl methylcellulose ether i loko o ka mortar, e hana nā hui methoxyl a me hydroxypropyl ma ke kaulahao molekala me nā ion calcium a me nā ion alumini i loko o ka slurry e hana i kahi gel viscous a hoʻopiha i ka hakahaka mortar sima. , hoʻomaikaʻi i ka compactness o ka mortar, pāʻani i ke kuleana o ka hoʻopiha palupalu a me ka hoʻoikaika. Eia nō naʻe, i ka wā e kaomi ʻia ai ka matrix composite, ʻaʻole hiki i ka polymer ke pāʻani i kahi kuleana kākoʻo paʻa, no laila e emi ana ka ikaika a me ka lakio pelu o ka mortar.
Ka Hoʻokumu ʻana o ka ʻIliʻoniʻoni o Hydroxypropyl Methyl Cellulose Ether
Ma hope o ka hoʻohui ʻia ʻana o ka hydroxypropyl methyl cellulose ether no ka hydration, ua hoʻokumu ʻia kahi papa lahilahi o ka ʻili latex ma waena o nā ʻāpana sima. Loaʻa i kēia ʻili kahi hopena sila a hoʻomaikaʻi i ka maloʻo o ka ʻili o ka mortar. Ma muli o ka paʻa maikaʻi ʻana o ka wai o ka hydroxypropyl methylcellulose ether, ua mālama ʻia nā molekala wai lawa i loko o ka mortar, no laila e hōʻoiaʻiʻo ana i ka paʻakikī hydration o ka sima a me ka hoʻomohala piha ʻana o ka ikaika, e hoʻomaikaʻi ana i ka ikaika hoʻopaʻa o ka mortar, a i ka manawa like e hoʻomaikaʻi ai i ka cohesion o ka mortar, e hana i ka mortar i ka plasticity maikaʻi a me ka maʻalahi, a hoʻemi i ka shrinkage a me ka deformation o ka mortar.
Ka manawa hoʻouna: Mei-23-2023