ʻO ka cellulose ether i ka mortar gypsum

Hiki ke hoʻohana ʻia nā carboxymethyl cellulose a me ka methyl cellulose e like me nā mea mālama wai no ka plaster, akā ʻoi aku ka haʻahaʻa o ka hopena mālama wai o ka carboxymethyl cellulose ma mua o ka methyl cellulose, a ʻo ka carboxymethyl cellulose aia ka paʻakai sodium, no laila ʻaʻole kūpono ia no ka plaster of paris. He hopena hoʻopaneʻe a hoʻemi i ka ikaika o ka plaster of paris. ʻO ka methyl cellulose kahi mea hoʻohui kūpono no nā mea gypsum cementitious e hoʻohui ana i ka paʻa ʻana o ka wai, ka mānoanoa, ka hoʻoikaika ʻana, a me ka viscosifying, koe wale nō ka hopena o kekahi mau ʻano i ka hopena i ka nui o ka dosage. kiʻekiʻe ma mua o ka carboxymethyl cellulose. No kēia kumu, ʻo ka hapa nui o nā mea hana gelling gypsum composite e hoʻohana i ke ʻano o ka hoʻohui ʻana i ka carboxymethyl cellulose a me ka methyl cellulose, ʻaʻole ia e hoʻohana wale i kā lākou mau hiʻohiʻona (e like me ka hopena o ka carboxymethyl cellulose, ka hopena hoʻoikaika o ka methyl cellulose), a hoʻohana i kā lākou mau pono maʻamau. (e like me ka paʻa ʻana o ka wai a me ka hopena mānoanoa). Ma kēia ala, hiki ke hoʻomaikaʻi ʻia ka hana paʻa wai o nā mea gypsum cementitious a me ka hana holoʻokoʻa o nā mea gypsum cementitious, ʻoiai e mālama ʻia ka piʻi ʻana o ke kumukūʻai ma kahi haʻahaʻa.

Pehea ka nui o ka viscosity o ka methyl cellulose ether no ka gypsum mortar?

He mea nui ka viscosity omethyl cellulose etherhoʻokō.

ʻO ka ʻōlelo maʻamau, ʻoi aku ka kiʻekiʻe o ka viscosity, ʻoi aku ka maikaʻi o ka hopena paʻa wai o ka gypsum mortar. Eia nō naʻe, ʻoi aku ka kiʻekiʻe o ka viscosity, ʻoi aku ka kiʻekiʻe o ke kaumaha molekala o ka methyl cellulose ether, a ʻo ka emi ʻana o kona solubility e loaʻa i ka hopena maikaʻi ʻole i ka ikaika a me ka hana ʻana o ka mīkini. ʻO ke kiʻekiʻe o ka viscosity, ʻoi aku ka maopopo o ka hopena mānoanoa ma ka mortar, akā ʻaʻole pololei ia. ʻOi aku ka kiʻekiʻe o ka viscosity, ʻoi aku ka ʻoi aku o ka viscous o ka mortar pulu. I ka wā o ke kūkulu ʻana, ʻike ʻia ʻo ia e pili ana i ka scraper a me ka hoʻopili kiʻekiʻe i ka substrate. Akā ʻaʻole kōkua ka hoʻonui ʻana i ka ikaika o ke kūkulu ʻana o ka mortar pulu ponoʻī. Eia kekahi, i ka wā o ke kūkulu ʻana, ʻaʻole ʻike ʻia ka hana anti-sag o ka mortar pulu. Ma kahi ʻē aʻe, ʻoi aku ka maikaʻi o ka hoʻomaikaʻi ʻana i ka ikaika o ka mortar pulu.

Pehea ka nui o ka maikaʻi o ka cellulose ether i ka mortar?

ʻO ka Fineness kekahi mea koʻikoʻi o ka methyl cellulose ether. ʻO ka MC i hoʻohana ʻia no ka pauka maloʻo maloʻo e koi ʻia he pauka me ka haʻahaʻa wai haʻahaʻa, a ʻo ka maikaʻi hoʻi e pono ai ka 20% a 60% o ka nui o ka nui ma lalo o 63m. Hoʻopili ka fineness i ka solubility o ka methyl cellulose ether. He mea maʻamau ka MC Coarse, he maʻalahi ke hoʻopuehu a hoʻoheheʻe i ka wai me ka ʻole o ka agglomeration, akā lohi ka dissolution rate, no laila ʻaʻole kūpono ia no ka hoʻohana ʻana i ka lepo maloʻo. ʻO kekahi mau huahana home he flocculent, ʻaʻole maʻalahi e hoʻopuehu a hoʻoheheʻe i ka wai, a maʻalahi hoʻi e agglomerate. I loko o ka lepo maloʻo maloʻo, ua hoʻopuehu ʻia ka MC ma waena o nā aggregates, nā mea hoʻopihapiha maikaʻi a me nā mea sima a me nā mea hoʻohui ʻē aʻe. ʻO ka pauka maikaʻi wale nō ke pale aku i ka methyl cellulose ether agglomeration i ka hui ʻana me ka wai. Ke hoʻohui ʻia ʻo MC me ka wai e hoʻoheheʻe i nā agglomerates, paʻakikī loa ka hoʻopuehu a hoʻoheheʻe. ʻAʻole hoʻopau wale ʻo Coarse MC, akā hōʻemi pū i ka ikaika kūloko o ka mortar. Ke hoʻohana ʻia kēlā ʻano hamo pauda maloʻo ma kahi ākea, e hoʻemi nui ʻia ka wikiwiki o ka hoʻōla ʻana o ka hamo kūloko, a ʻike ʻia nā māwae ma muli o nā manawa hoʻōla ʻokoʻa. No ka mortar sprayed me ka hana mechanical, ʻoi aku ka kiʻekiʻe o ke koi no ka fineness ma muli o ka pōkole o ka hui ʻana.

ʻO ka maikaʻi o MC kekahi hopena i kona paʻa wai. ʻO ka ʻōlelo maʻamau, no ka methyl cellulose ethers me ka like viscosity akā ʻokoʻa ka fineness, ma lalo o ka huina hoʻohui like, ʻoi aku ka maikaʻi o ka ʻoi aku ka maikaʻi o ka hopena paʻa wai.