ʻO ka mahana a me ka mālama wai o HPMC

ʻO ka HPMC ka mea nui o ka mālama ʻana i ka wai a me ka mānoanoa o ka pahu sima a me ka gypsum-based slurry, hiki ke hoʻomaikaʻi maikaʻi i ka cohesion a me ka pale ʻana o ka slurry.
ʻO nā mea e like me ka mahana o ka ea, ka mahana a me ke kaomi makani e hoʻopili i ka nui o ka evaporation o ka wai ma ka mortar sima a me nā huahana gypsum.No laila, i nā kau like ʻole, me ka hoʻohui ʻana i ka nui like o ka HPMC, ʻokoʻa ka hopena paʻa wai o nā huahana.ʻO ka paʻa ʻana o ka wai o ka methyl cellulose ether i ka wela kiʻekiʻe he hōʻailona koʻikoʻi ia e ʻike ai i ka maikaʻi o ka methyl cellulose ether.Hiki i ka HPMC maikaʻi ke hoʻoponopono i ka pilikia o ka mālama ʻana i ka wai ma lalo o ka wela kiʻekiʻe.I nā kau wela kiʻekiʻe, ʻoi aku hoʻi i nā wahi wela a maloʻo a me ka hana ʻana i nā ʻāpana lahilahi ma ka ʻaoʻao o ka lā, pono ka HPMC kiʻekiʻe e hoʻomaikaʻi i ka paʻa ʻana o ka wai o ka slurry.ʻO ka HPMC kūlana kiʻekiʻe, me ke kūlike maikaʻi loa, ua māhele like ʻia kāna mau methoxy a me ka hydroxypropoxy pūʻulu ma ke kaulahao mole cellulose, hiki ke hoʻomaikaʻi i ka hiki o nā ʻātoma oxygen ma ka hydroxyl a me nā paʻa ether e hui pū me ka wai e hana i nā paʻa hydrogen, no laila. lilo ka wai manuahi i ka wai paʻa, i mea e hoʻomalu pono ai i ka hoʻoheheʻe ʻana o ka wai i hana ʻia e ka wela wela a loaʻa ka paʻa wai kiʻekiʻe.