Mechanism Mānoanoa o ka Cellulose i loko o ka mortar

Hiki i ka cellulose ether ke hoʻomaikaʻi maikaʻi i ka hana o ka mortar pulu, a he mea hoʻohui nui e pili ana i ka hana hana o ka mortar. ʻO ke koho kūpono o nā cellulose ethers o nā ʻano ʻano like ʻole, nā viscosities like ʻole, nā ʻāpana ʻokoʻa like ʻole, nā degere like ʻole o ka viscosity a me nā nui i hoʻohui ʻia e loaʻa i ka hopena maikaʻi i ka hoʻomaikaʻi ʻana i ka hana o ka mortar pauka maloʻo.

Aia kekahi pilina laina maikaʻi ma waena o ke kūlike o ka paʻi sima a me ke ʻano o ka cellulose ether. Hiki i ka cellulose ether ke hoʻonui nui i ka viscosity o ka mortar. ʻO ka nui o ka dosage, ʻoi aku ka maopopo o ka hopena. Loaʻa ka thixotropy kiʻekiʻe o ka cellulose ether aqueous solution, ʻo ia hoʻi kahi ʻano nui o ka cellulose ether.

ʻO ka hopena mānoanoa e pili ana i ke kiʻekiʻe o ka polymerization o cellulose ether, ka hoʻonā hoʻonā, ka shear rate, ka mahana a me nā kūlana ʻē aʻe. He kū hoʻokahi ka waiwai gelling o ka hopena i ka alkyl cellulose a me kāna mau mea i hoʻololi ʻia. ʻO nā waiwai gelation e pili ana i ke kiʻekiʻe o ka hoʻololi, ka hoʻonā hoʻonā a me nā mea hoʻohui. No nā derivatives hoʻololi hydroxyalkyl, pili pū nā waiwai gel i ka pae hoʻololi o ka hydroxyalkyl. Hiki ke hoʻomākaukau ʻia ka hopena 10% -15% no ka MC haʻahaʻa haʻahaʻa a me ka HPMC, hiki ke hoʻomākaukau ʻia ka 5% -10% solution no ka medium-viscosity MC a me HPMC, a hiki ke hoʻomākaukau ʻia ka hopena 2% -3% no ka MC kiʻekiʻe. a me HPMC. ʻO ka maʻamau ka helu ʻana o ka viscosity o cellulose ether e 1% -2% solution.

High-molecular-kaumaha cellulose etera i kiʻekiʻe thickening pono. ʻO nā polimer me nā kaumaha molekala ʻokoʻa nā viscosity ʻokoʻa i ka hoʻonā hoʻonā hoʻokahi. Degere kiʻekiʻe. Hiki ke hoʻokō ʻia ka viscosity target ma ka hoʻohui ʻana i ka nui o ka cellulose ether molecular haʻahaʻa haʻahaʻa. Kona viscosity i uuku hilinaʻi ma luna o ka shear rate, a hiki i ka viscosity kiʻekiʻe i ka viscosity pahupaʻiwikiō, a me ka mea i koi 'ia he uuku, a me ka viscosity hilinaʻi ma luna o ka thickening pono. No laila, no ka hoʻokō ʻana i kahi kūlike, pono e hōʻoia ʻia kahi nui o ka cellulose ether (concentration of the solution) a me ka viscosity solution. ʻO ka mahana gel o ka hopena e emi iho ana me ka hoʻonuiʻia o ka hoʻonāʻana o ka hopena, a me nā gels i ka mahana wela ma hope o ka hikiʻana i kahi kūlana. He kiʻekiʻe ka ʻike gelling o HPMC ma ka lumi wela.


Ka manawa hoʻouna: Mar-08-2023