ʻO ka cellulose ether kahi huaʻōlelo maʻamau no nā huahana i hana ʻia e ka hopena o ka cellulose alkali a me ka etherifying agent ma lalo o kekahi mau kūlana.Hoʻololi ʻia ka alkali cellulose e nā mea etherifying ʻokoʻa e loaʻa ai nā ʻokoʻacellulose ethers.Ma muli o nā waiwai ionization o nā mea pani, hiki ke hoʻokaʻawale ʻia nā cellulose ethers i ʻelua mau ʻāpana: ionic (e like me carboxymethyl cellulose) a me ka non-ionic (e like me ka methyl cellulose).Wahi a ke ʻano o ka mea pani, hiki ke hoʻokaʻawale ʻia ka cellulose ether i ka monoether (e like me ka methyl cellulose) a me ka ether i hui pū ʻia (e like me ka hydroxypropyl methyl cellulose).E like me ka like ole solubility, hiki ke maheleia i ka wai-soluble (e like me ka hydroxyethyl cellulose) a me ka organic solvent-soluble (e like me ka ethyl cellulose), etc. māhele ʻia i ke ʻano koke a me ke ʻano hoʻoheheʻe lohi i mālama ʻia ma luna.
Ma hope o ka hoʻoheheʻe ʻia ʻana o ka cellulose ether i loko o ka wai, ua hōʻoia ʻia ka hāʻawi ʻana a me ka like ʻole o ka mea cementitious i loko o ka ʻōnaehana ma muli o ka hana o ka ʻili, a ʻo ka cellulose ether, ma ke ʻano he colloid pale, "wraps" i nā ʻāpana paʻa a me nā uhi. lākou ma ka ʻili o waho.Hoʻokumu i kahi kiʻi lubricating, e hoʻoikaika i ka ʻōnaehana mortar, a hoʻomaikaʻi pū i ka wai o ka mortar i ka wā o ka hui ʻana a me ka maʻalahi o ke kūkulu ʻana.
Ma muli o kona ʻano molekala ponoʻī, ʻo ka cellulose ether solution ka wai i loko o ka mortar ʻaʻole maʻalahi e nalowale, a hoʻokuʻu mālie iā ia i kahi manawa lōʻihi, e hāʻawi ana i ka mortar me ka paʻa wai maikaʻi a me ka hana.
ʻO ka pāpaʻi sima lepo ponoʻī, me ka haʻahaʻa viscosity hydroxypropyl methylcellulose ether.No ka mea, ua pae maoli ka honua holoʻokoʻa me ka liʻiliʻi o ka hana ʻana e nā limahana hana, ke hoʻohālikelike ʻia me ke kaʻina hana hoʻomaʻemaʻe manual mua, ʻoi aku ka maikaʻi o ka palahalaha a me ka wikiwiki o ke kūkulu ʻana.Hoʻohana ka manawa hoʻohui maloʻo ponoʻī i ka paʻa wai maikaʻi o ka hydroxypropyl methylcellulose.No ka mea e pono ai ka hoʻopaʻa ʻana ponoʻī e hiki ke hoʻoneʻe ʻia i ka lepo, ʻoi aku ka nui o ka wai.Ma hope o ka hoʻohui ʻana i ka hpmc, e hoʻomalu ʻo ia i ka lepo ʻAʻole maopopo ka paʻa ʻana o ka wai o ka ʻili, kahi e hoʻokiʻekiʻe ai ka ikaika o ka ʻili ma hope o ka maloʻo ʻana, a liʻiliʻi ka emi ʻana, e hōʻemi ana i nā māwae.Hāʻawi pū ka hoʻohui ʻana o HPMC i ka viscosity, hiki ke hoʻohana ʻia ma ke ʻano he kōkua anti-sedimentation, hoʻonui i ka wai a me ka pumpability, a hoʻomaikaʻi i ka pono o ka paʻi ʻana i ka lepo.
ʻO ka cellulose ether maikaʻi he kūlana hiʻohiʻona fluffy a me kahi puʻupuʻu liʻiliʻi;He keʻokeʻo maikaʻi ka HPMC maʻemaʻe, maʻemaʻe nā mea maka i hoʻohana ʻia i ka hana ʻana, ʻoi aku ka maikaʻi o ka pane ʻana a me ka ʻole o nā haumia, ʻike ʻia ka wai wai, kiʻekiʻe ka transmittance māmā, ʻaʻohe ammonia, starch a me nā waiʻona.E ʻono, fibrous ma lalo o ka microscope a i ʻole ke aniani hoʻonui.
Ka manawa hoʻouna: Dec-06-2022