Ma muli o kāna mau hiʻohiʻona hydration a me ka hoʻolālā kino, ʻo ka gypsum kahi mea kūkulu hale maikaʻi loa a hoʻohana pinepine ʻia i nā mākeke hoʻonaninani kūloko a me nā ʻāina ʻē. Eia naʻe, no ka hoʻonohonoho ʻana o ka gypsum a paʻakikī loa, ʻo ka manawa hana maʻamau ʻo 3 a 30 mau minuke, kahi maʻalahi e kaupalena i ka hoʻohana ʻana i ka gypsum. No laila, he mea nui e hoʻohui i ka gypsum retarder.
ʻOiai ke hoʻololi nei ka mea retarder i ka manawa hoʻopaneʻe o ka gypsum, hoʻopōʻino nui ia i ka ikaika.
ʻO nā pono o ka gypsum retarder:
Hoʻohui i ka nui liʻiliʻi, lōʻihi ka manawa hoʻomaha
ʻOi aku ka paʻakikī ma hope o ka coagulation, non-toxic, tasteless and more environmental friendly
1. E hui mua i ka hana gypsum pauka me ka retarder, Yuhe hydroxypropyl methylcellulose a i ʻole nā mea hoʻohui like ʻole, a laila hoʻohui i ke one, calcium kaumaha, a me nā mea ʻē aʻe, e hoʻohui i ke one a i ʻole ka calcium kaumaha a hoʻoulu i 15 mau minuke ma mua o ka hoʻokuʻu ʻana. (Manuahi: Ma muli o ka ʻokoʻa kikoʻī kikoʻī o nā mea, e loaʻa ka stratification ma hope o ka hoʻoulu ʻana i ka wā lōʻihi, e pili ana i ka maikaʻi o ka huahana.)
2. No nā huahana ʻē aʻe, e like me ka mold gypsum a me ka wai gel retarded, hiki iā ʻoe ke hoʻokomo i ka retarder i loko o ka wai ma mua, a laila hoʻohui iā ia e hoʻohana ma hope o ka hemo ʻana.
Nā hana hoʻomaʻamaʻa o nā huahana gypsum
Stucco plaster pae haʻahaʻa:
ʻO ka pauka gypsum maʻemaʻe 300 kg
700 kg one kahawai maikaʻi
Hydroxypropyl methylcellulose 0.5-0.7 kg
ʻO Gypsum retarder 0.8-1 kg
Paʻa paʻa (ʻano maloʻo lohi):
ʻO ka pauka gypsum maʻemaʻe 800 kg
ʻO ka pauka calcium kaumaha 200 kg
Hydroxypropyl methylcellulose 2.5 kg
Hoʻopaneʻe 2.5 kg
ʻO ka pau ʻana o ka pena pena (gypsum putty):
ʻO ka pauka gypsum maʻemaʻe 500-700 kg
ʻO ka pauka calcium kaumaha 300-500 kg
Hydroxypropyl methylcellulose 2-2.5 kg
ʻO Gypsum retarder 1.5-2.1 kg
kāʻei pulu:
700 kg o ka pauka gypsum maʻemaʻe
ʻO ka pauka calcium kaumaha 300 kg
Hydroxypropyl Cellulose 2.5kg
ʻO ka pauka latex dispersible 2kg
ʻO Gypsum retarder 2 kg
Ka manawa hoʻouna: Apr-14-2023