Paʻa 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 paʻa 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.Ma muli o ka hoʻokumu ʻana o ka cellulose i loko o ka hydroxyl a me nā paʻa ether, ua hui nā ʻātoma oxygen ma ka hydroxyl a me nā pūʻulu paʻa ether me nā molekele wai e hana i nā paʻa hydrogen, i lilo ai ka wai manuahi i ka wai a hoʻopaʻa i ka wai, no laila ke pāʻani nei i ka mālama ʻana i ka wai.
Ka hoʻoheheʻe ʻia o ka Hydroxypropyl Methyl Cellulose Etera
1. He mea maʻalahi ka hoʻopuehu ʻana o ka cellulose ether i loko o ka wai me ka ʻole o ka agglomeration, akā lohi loa ka dissolution rate.Hoʻoheheʻe ʻia ka cellulose ether ma lalo o 60 mesh i ka wai no kahi o 60 mau minuke.
2. He mea maʻalahi ka hoʻopuehu ʻana o ka cellulose ether i loko o ka wai me ka ʻole o ka agglomeration, a ʻoi aku ka maʻalahi o ka dissolution rate.Hoʻoheheʻe ʻia ka cellulose ether ma luna o 80 mesh i ka wai no kahi o 3 mau minuke.
3. Hoʻopuehu koke ka ʻāpana cellulose etera ultra-fine i loko o ka wai, hoʻoheheʻe koke, a hana i ka viscosity wikiwiki.ʻO ka cellulose ether ma luna o 120 mesh e hoʻoheheʻe i ka wai no kahi 10-30 kekona.
ʻOi aku ka maikaʻi o nā ʻāpana o ka hydroxypropyl methylcellulose ether, ʻoi aku ka maikaʻi o ka mālama ʻana i ka wai.Hoʻoheheʻe ʻia ka ʻili o ka cellulose ether coarse-grained ma hope o ka hoʻopili ʻana me ka wai a hana i kahi ʻano gel.Hoʻopili ke kāpili i ka mea e pale ai i nā molekala wai mai ka hoʻomau ʻana i ke komo ʻana.I kekahi manawa, ʻaʻole hiki ke hoʻopuehu like ʻia a hoʻoheheʻe ʻia ʻoiai ma hope o ka hoʻoulu ʻana i ka wā lōʻihi, e hana ana i kahi solution flocculent cloudy a i ʻole agglomeration.Hoʻopuehu a hoʻoheheʻe ʻia nā ʻāpana maikaʻi ma hope o ka hoʻopili ʻana me ka wai e hana i kahi viscosity like.
Ka waiwai PH o ka hydroxypropyl methylcellulose ether (hoʻopanee a i ʻole ka hopena ikaika mua)
ʻO ka waiwai pH o nā mea hana hydroxypropyl methylcellulose ether ma ka home a me nā ʻāina ʻē e hoʻomalu maoli ʻia ma kahi o 7, aia i loko o kahi kūlana acidic.Ma muli o ka nui o nā ʻano apo anhydroglucose i loko o ka molecular structure o cellulose ether, ʻo ke apo anhydroglucose ka hui nui e hoʻopiʻi ai i ka cement retardation.Hiki i ke apo anhydroglucose ke hana i nā ion calcium i loko o ka solution hydration cement e hoʻohua i nā pūhui kōpaʻa-calcium molecular, e hoʻemi i ka neʻe ʻana o ka calcium ion i ka wā induction o ka hydration cement, pale i ka hoʻokumu ʻana a me ka ua o ka calcium hydroxide a me ka paʻakai paʻakai calcium, a hoʻopaneʻe i ka hydration o sima.kaʻina hana.Inā loaʻa ka waiwai PH ma kahi kūlana alkaline, e ʻike ʻia ka mortar i kahi kūlana 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, hoʻoikaika i ka hui ʻana 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 hoʻoikaika i ka hoʻokumu ʻana o ka ettringite, a me ka coagulates sima wikiwiki.No laila, pono e hoʻoponopono ʻia ka waiwai pH e like me nā mea kūʻai aku i ke kaʻina hana maoli.
ʻO nā pono e komo ai ka ea o Hydroxypropyl Methyl Cellulose Etera
ʻO ka hopena o ka ea o ka hydroxypropyl methylcellulose ether ma muli o ka cellulose ether kekahi ʻano surfactant.Loaʻa ka hana interfacial o cellulose ether ma ke kinoea-wai-solid interface.ʻO ka mua, ʻo ka hoʻokomo ʻana i nā ʻōpū o ka ea, a ma hope o ka hoʻopuehu a me ka hopena Wetting.Loaʻa i ka cellulose ether nā pūʻulu alkyl, ka mea e hoʻemi nui ai i ka ʻili o ka ʻili a me ka ikehu interfacial o ka wai, e maʻalahi ai ka hoʻoulu ʻana i nā ʻōhū liʻiliʻi liʻiliʻi i ka wā o ka hoʻoulu ʻana o ka wai.
Nā Pono 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 mole me nā ion calcium a me nā iona alumini i loko o ka slurry e hana i kahi gel viscous a hoʻopiha i ka pahu sima., hoʻomaikaʻi i ka compactness o ka mortar, pāʻani i ka hana o ka hoʻopiha piha a me ka hoʻoikaika.Eia nō naʻe, i ka wā i hoʻopaʻa ʻia ai ka matrix composite, ʻaʻole hiki i ka polymer ke pāʻani i kahi kuleana kākoʻo paʻa, no laila e emi ka ikaika a me ka ratio pelu o ka mortar.
Hoʻokumu kiʻiʻoniʻoni 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 ʻāpana lahilahi o ke kiʻi latex ma waena o nā ʻāpana sima.He hopena hoʻopaʻa kēia kiʻiʻoniʻoni a hoʻomaikaʻi i ka maloʻo o ka ʻili o ka mortar.Ma muli o ka paʻa ʻana o ka wai maikaʻi o ka hydroxypropyl methylcellulose ether, mālama ʻia ka nui o nā molekala wai i loko o ka mortar, no laila e hōʻoiaʻiʻo ai i ka paʻakikī hydration o ka sima a me ka hoʻomohala piha o ka ikaika, e hoʻomaikaʻi i ka ikaika paʻa o ka mortar, a i ka manawa like. hoʻomaikaʻi i ka cohesion o ka mortar, 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