Pehea e koho ai i ka hydroxypropyl methylcellulose no ka mortar plaster?

ʻO ka waiwai pH maʻamau o nā huahana gypsum he ʻakika a kū ʻole paha. I kēia manawa, ʻelua ʻano o ka papa hanahydroxypropyl methylcellulosema ka mākeke: hoʻoheheʻe lohi a me ka cellulose koke (S). ʻAʻole kūpono ka cellulose koke no nā ʻōnaehana gypsum. ʻO nā huahana, ʻilihune loa ka solubility ma lalo o ka acidic a i ʻole nā ​​kūlana kūʻokoʻa, a hiki ke hoʻoheheʻe ʻia ka hydroxypropyl methylcellulose lohi i loko o nā huahana gypsum, akā he pōʻino koʻikoʻi ka hoʻoheheʻe ʻana o ka cellulose, maʻalahi ke agglomerate (i ka wā gypsum Ma hope o ka hoʻoulu ʻana o ka mortar ma luna. ka pā no ka manawa pōkole, ʻike ʻia nā kiko kiko liʻiliʻi ma ka ʻili). I kēia manawa, i loko o nā huahana gypsum, ʻoi aku hoʻi i ka mīkini-sprayed gypsum mortar, pono ia e hiki ke hoʻopuehu piha a hoʻoheheʻe ʻia ka cellulose ether i loko o kahi manawa pōkole loa, kahi e koi ai iā mākou e hana i ka noiʻi hohonu e pili ana i ka cellulose ether lohi. hana hana. ʻO ka mālama ʻana i ka ʻili (ʻaʻole i kapa ʻia ka hoʻohui ʻana o nā mea hoʻohui ʻē aʻe i ka cellulose ether papa maʻamau), i mea e hoʻololi ai i ka ʻōnaehana gypsum mortar. Hiki i ka Hydroxypropyl methylcellulose ether me ka lapaʻau ʻili hohonu ke loaʻa ka manawa hoʻoheheʻe paʻa a me nā waiwai mechanical maikaʻi i ka gypsum mortar, a hiki ke hoʻomaikaʻi maikaʻi i ke kaʻina pae a me ka hoʻopau ʻana o ka mortar.

Hoʻohana maʻamau ka mīkini gypsum mortar me ka haʻahaʻa haʻahaʻa haʻahaʻa hydroxypropyl methylcellulose ether ma waena o 20,000 a me 75,000, a ʻo ka nui o ka hoʻohui ʻana he 0.2% a 0.4%. Hoʻoponopono ʻia ka manawa hoʻonohonoho o ka mīkini gypsum mortar ma kahi o 1 hola. Hoʻohana mākou i ka gypsum mortar yield stress, plastic viscosity, thixotropy, rheology a me ke kūlike o ka slurry e hoʻoholo i ka hana o nā huahana gypsum mortar.

Manaʻo mākou i ka mana maikaʻi o ka desulfurization gypsum source calcining process, fillers (cement, fine aggregate, heavy calcium powder) a me admixtures (hiki ke hoʻohana ʻia i ka disperse latex powder, hydroxypropyl methyl cellulose ether, expanded perlite, gypsum retarder) ʻO ke koho o ka holoʻokoʻa. kumu kūʻai huahana.

Hydroxypropyl methyl cellulose etherno ka mea, he kiʻekiʻe ka maʻemaʻe a me ka hana maikaʻi o ka gypsum mortar, a ua mahalo nui ʻia e nā mea kūʻai aku gypsum mortar.