Ka hopena o ka pauda latex a me ka cellulose i ka hana ʻana o ke kūkulu ʻana i ka mortar maloʻo

He kuleana koʻikoʻi nā admixtures i ka hoʻomaikaʻi ʻana i ka hana o ke kūkulu ʻana i ka mortar maloʻo. Hoʻohālikelike a hoʻohālikelike kēia i nā waiwai kumu o ka pauka latex a me ka cellulose, a me ka nānā ʻana i ka hana o nā huahana mortar maloʻo me ka hoʻohana ʻana i nā admixtures.

ʻO ka pauka latex hiki ke hoʻopuka hou ʻia

ʻO ka pauka latex hiki ke hoʻopuka hou ʻiahana ʻia ma ka hoʻomaloʻo ʻana i ka emulsion polymer kūikawā. ʻO ka pauka latex maloʻo kekahi mau ʻāpana spherical o 80 ~ 100mm i hōʻuluʻulu ʻia. Hiki ke hoʻoheheʻe ʻia kēia mau ʻāpana i ka wai a hana i kahi dispersion paʻa i ʻoi aku ka nui ma mua o nā ʻāpana emulsion mua, kahi kiʻiʻoniʻoni ma hope o ka maloʻo ʻana a me ka maloʻo.

ʻO nā ʻano hoʻololi like ʻole e loaʻa i ka pauka latex redispersible nā ​​waiwai like ʻole e like me ke kūpaʻa wai, ke kūpaʻa alkali, ka pale ʻana i ka wā a me ka maʻalahi. ʻO ka pauka latex i hoʻohana ʻia i ka mortar hiki ke hoʻomaikaʻi i ka hopena o ka hopena, ka lōʻihi, ke kūpaʻa ʻana, ka maʻalahi o ke kūkulu ʻana, ka ikaika hoʻopaʻa a me ka cohesion, ka pale ʻana i ka wā, ka pale ʻana i ka wai, ka ikaika kulou a me ka ikaika flexural o ka mortar.

Cellulose etera

ʻO ka cellulose ether kahi huaʻōlelo maʻamau no nā huahana i hana ʻia e ka hopena o ka cellulose alkali a me ka etherifying agent ma lalo o kekahi mau kūlana. Hoʻololi ʻia ka alkali cellulose e nā mea etherifying ʻokoʻa e loaʻa ai nā ether cellulose ʻokoʻa. Ma muli o nā waiwai ionization o nā mea pani, hiki ke hoʻokaʻawale ʻia nā cellulose ethers i ʻelua mau ʻāpana: ionic (e like me carboxymethyl cellulose) a me ka non-ionic (e like me ka methyl cellulose). Wahi a ke ʻano o ka mea pani, hiki ke hoʻokaʻawale ʻia ka cellulose ether i ka monoether (e like me ka methyl cellulose) a me ka ether i hui pū ʻia (e like me ka hydroxypropyl methyl cellulose). E like me ka like ole solubility, hiki ke maheleia i ka wai-soluble (e like me ka hydroxyethyl cellulose) a me ka organic solvent-soluble (e like me ka ethyl cellulose), etc. māhele ʻia i ke ʻano koke a me ke ʻano hoʻoheheʻe lohi i mālama ʻia ma luna.

ʻO ke ʻano o ka hana o ka cellulose ether i ka mortar penei:

(1) Ma hope o kacellulose eterai loko o ka mortar ua hoʻoheheʻe ʻia i loko o ka wai, ua hōʻoia ʻia ka hāʻawi maikaʻi ʻana a me ka like ʻole o nā mea cementitious i loko o ka ʻōnaehana ma muli o ka hana o ka ʻili, a ʻo ka cellulose ether, ma ke ʻano he colloid pale, "wraps" i nā ʻāpana paʻa a me kahi papa o ka lubricating film. ua hoʻokumu ʻia ma kona ʻaoʻao i waho, kahi e hoʻokūpaʻa ai ka ʻōnaehana mortar, a hoʻomaikaʻi pū i ka wai o ka mortar i ka wā o ka hui ʻana a me ka maʻalahi o ke kūkulu ʻana.

(2) Ma muli o kona ʻano mole mole, ʻo ka cellulose ether solution ka wai i loko o ka mortar ʻaʻole maʻalahi e nalowale, a hoʻokuʻu mālie iā ia i kahi manawa lōʻihi, e hāʻawi ana i ka mortar me ka paʻa wai maikaʻi a me ka hana.

pulu laau

Hana ʻia ka fiber lāʻau i nā mea kanu ma ke ʻano he kumu nui a hoʻoponopono ʻia e nā ʻenehana, a ʻokoʻa kāna hana mai ka cellulose ether. ʻO nā waiwai nui:

(1) ʻAʻole hiki ke hoʻoheheʻe ʻia i loko o ka wai a me nā mea hoʻoheheʻe, a ʻaʻole hiki ke hoʻoheheʻe ʻia i ka waika nāwaliwali a me nā haʻina kumu nāwaliwali

(2) Hoʻohana ʻia i loko o ka mortar, e uhi ʻia i loko o kahi ʻano ʻekolu-dimensional i kahi kūlana static, e hoʻonui i ka thixotropy a me ka sag kūʻē o ka mortar, a hoʻomaikaʻi i ka constructability.

(3) Ma muli o ke ʻano ʻekolu-dimensional o ka lāʻau fiber, loaʻa iā ia ka waiwai o ka "paʻa wai" i loko o ka pahu i hui ʻia, a ʻaʻole e maʻalahi a wehe ʻia ka wai i loko o ka pahu. Akā ʻaʻole i loaʻa ka wai kiʻekiʻe o ka cellulose ether.

(4) ʻO ka hopena capillary maikaʻi o ka fiber lāʻau ka hana o ka "conduction wai" i loko o ka mortar, ka mea e hoʻohālikelike ai ka ʻili a me ka makū o loko o ka mortar, a laila e hōʻemi ana i nā māwae i hana ʻia e ka shrinkage uneven.

(5) Hiki i ka pulupulu lāʻau ke hoʻemi i ke koʻikoʻi deformation o ka momi paʻakikī a hoʻemi i ka emi ʻana a me ka haki ʻana o ka mortar.


Ka manawa hoʻouna: Apr-25-2024