ʻO ka cellulose ethers i loko o nā mea hoʻohui mortar mākaukau

1. ʻO ka hana nui o ka cellulose ether

I loko o ka mīkini paʻipaʻi mākaukau, cellulose ether kahi mea hoʻohui nui i hoʻohui ʻia i kahi haʻahaʻa haʻahaʻa akā hiki ke hoʻomaikaʻi maikaʻi i ka hana o ka mortar pulu a pili i ka hana hana o ka mortar.

2. Nā ʻano o ka cellulose ethers

ʻO ka hana ʻana o ka cellulose ether i hana nui ʻia i nā fibers kūlohelohe ma o ka alkali dissolution, grafting reaction (etherification), holoi, maloʻo, wili a me nā hana ʻē aʻe.

Wahi a nā kumu waiwai nui, hiki ke hoʻokaʻawale ʻia nā fiber maoli i: pulupulu pulupulu, kedera kedera, beech fiber, a me nā mea ʻē aʻe. I kēia manawa, hoʻohana nā mea hana cellulose nui i ka pulupulu pulupulu (by-product of nitrocellulose) ma ke ʻano he kumu kumu.

Hiki ke hoʻokaʻawale ʻia nā cellulose ethers i ka ionic a me ka nonionic. ʻO ka ʻano ionic ka nui o ka paʻakai carboxymethyl cellulose, a ʻo ka ʻano non-ionic ka nui o ka methyl cellulose, methyl hydroxyethyl (propyl) cellulose, hydroxyethyl cellulose, etc.

I kēia manawa, ʻo nā cellulose ethers i hoʻohana ʻia i ka mortar i hoʻomākaukau ʻia he methyl cellulose ether (MC), methyl hydroxyethyl cellulose ether (MHEC), methyl hydroxypropyl cellulose ether (MHPG), hydroxypropyl Methyl cellulose ether (HPMC). I loko o ka mortar i hoʻomākaukau ʻia, no ka mea ʻaʻole paʻa ka paʻakai ionic cellulose (carboxymethyl cellulose paʻakai) i ke alo o nā ion calcium, ʻaʻole pinepine ia i hoʻohana ʻia i nā huahana i hoʻohana ʻia e hoʻohana i ka sima, slaked lime, etc. Ma kekahi mau wahi ma Kina, hoʻohana ʻia ka paʻakai carboxymethyl cellulose ma ke ʻano he mānoanoa no kekahi mau huahana i loko o ka hale i hana ʻia me ka starch i hoʻololi ʻia e like me ka mea nui cementing a me ka pauka Shuangfei ma ke ʻano he hoʻopiha. Hiki i kēia huahana ke malili a ʻaʻole kū i ka wai, a ke hoʻopau ʻia nei. Hoʻohana pū ʻia ʻo Hydroxyethyl cellulose i kekahi mau huahana mākaukau, akā he wahi mākeke liʻiliʻi loa.

3. Nā hōʻailona hana nui o ka cellulose ether

(1) Solubility

ʻO ka Cellulose kahi pūhui polyhydroxy polymer ʻaʻole i hoʻoheheʻe ʻia a hoʻoheheʻe ʻia. Ma hope o ka etherification, hiki ke hoʻoheheʻe ʻia ka cellulose i ka wai, hoʻoheheʻe ʻia ka hopena alkali a me ka solvent organik, a he thermoplasticity. Hoʻopili nui ʻia ka solubility ma nā kumu ʻehā: ʻo ka mua, ʻokoʻa ka solubility me ka viscosity, ʻo ka haʻahaʻa o ka viscosity, ʻoi aku ka nui o ka solubility. ʻO ka lua,ʻo nāʻano o nā hui i hoʻokomoʻia i ke kaʻina hana etherification,ʻo ka nui o ka hui i hoʻokomoʻia,ʻo ka haʻahaʻa o ka solubility; ʻoi aku ka nui o ka polar i hoʻokomo ʻia i ka hui, ʻoi aku ka maʻalahi o ka cellulose ether e hoʻoheheʻe i ka wai. ʻO ke kolu, ka degere o ka hoʻololi ʻana a me ka hāʻawi ʻana i nā pūʻulu etherified i nā macromolecules. Hiki ke hoʻoheheʻe ʻia ka hapa nui o nā cellulose ethers i ka wai ma lalo o kekahi pae o ka hoʻololi ʻana. ʻO ka hā, ke degere o ka polymerization o cellulose ether, ʻoi aku ka kiʻekiʻe o ka polymerization, ʻoi aku ka liʻiliʻi o ka soluble; ʻo ka haʻahaʻa o ke degere o ka polymerization, ʻoi aku ka laulā o ke degere o ka hoʻololi ʻana i hiki ke hoʻoheheʻe ʻia i ka wai.

(2) Paʻa wai

ʻO ka mālama ʻana i ka wai he hana koʻikoʻi ia o ka cellulose ether, a he hana hoʻi ia e hoʻolohe ai nā mea hana lepo maloʻo maloʻo, ʻoi aku ka poʻe ma nā wahi hema me nā mahana kiʻekiʻe. ʻO nā mea e pili ana i ka hopena paʻa wai o ka mortar ka nui o ka cellulose ether i hoʻohui ʻia, viscosity, particle fineness a me ka mahana o ke kaiapuni hoʻohana. ʻOi aku ka nui o ka cellulose ether i hoʻohui ʻia, ʻoi aku ka maikaʻi o ka hopena paʻa wai; ʻoi aku ka nui o ka viscosity, ʻoi aku ka maikaʻi o ka hopena paʻa wai; ʻoi aku ka maikaʻi o nā ʻāpana, ʻoi aku ka maikaʻi o ka hopena paʻa wai.

(3) Viscosity

ʻO ka viscosity kahi mea koʻikoʻi o nā huahana cellulose ether. I kēia manawa, hoʻohana nā mea hana cellulose ether like ʻole i nā ʻano hana a me nā mea hana e ana i ka viscosity. No ka huahana like, ʻokoʻa loa nā hopena viscosity i ana ʻia e nā ʻano hana like ʻole, a ua pālua ʻia kekahi. No laila, i ka hoʻohālikelike ʻana i ka viscosity, pono e hana ʻia ma waena o nā ʻano hoʻokolohua like, me ka mahana, rotor, etc.

ʻO ka ʻōlelo maʻamau, ʻoi aku ka kiʻekiʻe o ka viscosity, ʻoi aku ka maikaʻi o ka hopena paʻa wai. Eia nō naʻe, ʻoi aku ka kiʻekiʻe o ka viscosity, ʻoi aku ka kiʻekiʻe o ke kaumaha molecular o cellulose ether, a ʻo ka emi ʻana o kona solubility e loaʻa i kahi 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. I ka wā o ke kūkulu ʻana, ʻaʻole maopopo ka hana anti-sag. Ma kahi ʻē aʻe, ʻoi aku ka maikaʻi o ka hoʻomaikaʻi ʻana i ka ikaika o ka mortar pulu.

(4) ʻO ka maikaʻi o nā ʻāpana:

ʻO ka cellulose ether i hoʻohana ʻia no ka mortar i hoʻomākaukau ʻia e koi ʻia he pauka, me ka haʻahaʻa wai haʻahaʻa, a ʻo ka maikaʻi hoʻi e pono ai ka 20% a i ka 60% o ka nui o ka nui ma lalo o 63 μm. Pili ka fineness i ka solubility o ka cellulose ether. ʻO nā cellulose ethers maʻamau i ke ʻano o nā granules, maʻalahi e hoʻopuehu a hoʻoheheʻe ʻia i ka wai me ka ʻole o ka agglomeration, akā lohi loa ka dissolution rate, no laila ʻaʻole kūpono lākou no ka hoʻohana ʻana i ka mortar i hoʻomākaukau ʻia (he flocculent kekahi mau huahana home. ʻAʻole maʻalahi ka hoʻopuehu a hoʻoheheʻe ʻia i ka wai, a maʻalahi i ka caking). I loko o ka mortar i hoʻomākaukau ʻia, ua hoʻopuehu ʻia ka cellulose ether ma waena o nā aggregates, nā mea hoʻopihapiha maikaʻi a me nā mea sima a me nā mea hoʻoheheʻe ʻē aʻe. ʻO ka pauka maikaʻi wale nō ke pale aku i ka cellulose ether agglomeration i ka hui ʻana me ka wai. Ke hoʻohui ʻia ka cellulose ether me ka wai e hoʻoheheʻe i ka agglomeration, paʻakikī loa ka hoʻopuehu a hoʻoheheʻe.

(5) Hoʻololi i ka cellulose ether

ʻO ka hoʻololiʻana o ka cellulose ether ka hoʻonuiʻana i kāna hana, aʻo ia ka mea nui loa. Hiki ke hoʻomaikaʻi ʻia nā waiwai o ka cellulose ether e hoʻomaikaʻi i kona wettability, dispersibility, adhesion, thickening, emulsification, paʻa wai a me nā waiwai hana kiʻiʻoniʻoni, a me kona impermeability i ka aila.

4. Ka hopena o ka wela ambient i ka paʻa ʻana o ka wai o ka pahū

Hoʻemi ka paʻa wai o ka cellulose ether me ka piʻi ʻana o ka mahana. Ma nā mea hoʻohana pono, hoʻohana pinepine ʻia ka mortar i nā substrate wela i nā wela kiʻekiʻe (ʻoi aku ma mua o 40 ° C) ma nā wahi he nui. ʻO ka hāʻule ʻana o ka paʻa ʻana o ka wai i hopena i ka hopena i ʻike ʻia i ka hiki ke hana a me ke kūpaʻa ʻana. ʻO kona hilinaʻi ʻana i ka mahana e alakaʻi mau i ka nāwaliwali o nā waiwai mortar, a he mea koʻikoʻi loa ia e hōʻemi i ka mana o nā mea wela ma lalo o kēia ʻano. Ua hoʻoponopono pono ʻia nā ʻano meaʻai mortar, a ua nui nā hoʻololi koʻikoʻi i hana ʻia i nā ʻano meaʻai kau. ʻOiai ʻo ka hoʻonui ʻana i ka dosage (ke kumu kauwela), ʻaʻole hiki ke hoʻokō i nā pono o ka hoʻohana ʻana i ka hana a me ke kūʻē ʻana o ka ʻūhā, e koi ana i kahi mālama kūikawā o ka cellulose ether, e like me ka hoʻonui ʻana i ke kiʻekiʻe o ka etherification, a me nā mea ʻē aʻe. loaʻa ma kahi wela kiʻekiʻe. Mālama ia i ka hopena maikaʻi i ka wā kiʻekiʻe, no laila e hāʻawi i ka hana ʻoi aku ka maikaʻi ma nā kūlana paʻakikī.

5. Hoʻohana ʻia i loko o ka mīkini paʻipaʻi mākaukau

I loko o ka mortar i hoʻomākaukau ʻia, hoʻokani ka cellulose ether i ka hana o ka mālama ʻana i ka wai, ka mānoanoa a me ka hoʻomaikaʻi ʻana i ka hana hana. ʻO ka maikaʻi o ka mālama ʻana i ka wai e hōʻoia ʻaʻole e hoʻoneʻe ka mortar i ke one, ka pauka a me ka emi ʻana o ka ikaika ma muli o ka nele o ka wai a me ka hydration ʻole. ʻO ka hopena mānoanoa e hoʻonui nui i ka ikaika o ke kūkulu ʻana o ka mortar pulu. Hiki i ka hoʻohui ʻana i ka cellulose ether ke hoʻomaikaʻi nui i ka viscosity pulu o ka mortar pulu, a he viscosity maikaʻi i nā substrates like ʻole, a laila e hoʻomaikaʻi ai i ka hana o ka pā o ka mortar pulu a me ka hōʻemi ʻana i ka ʻōpala. Eia kekahi, ʻokoʻa ka hana o ka cellulose ether i nā huahana like ʻole. No ka laʻana, i loko o ka tile adhesives, cellulose ether hiki ke hoʻonui i ka manawa wehe a hoʻoponopono i ka manawa; i ka mīkini hoʻoheheʻe mīkini, hiki iā ia ke hoʻomaikaʻi i ka ikaika o ke kūkulu ʻana o ka mortar pulu; i ka hoʻonaʻauao pono'ī, hiki iā ia ke pale i ka hoʻonohonoho, Segregation a me ka stratification. No laila, ma ke ʻano he mea hoʻohui koʻikoʻi, hoʻohana nui ʻia ka cellulose ether i ka lepo maloʻo maloʻo.