Ka hopena o ka pauka latex i ka hana ʻana o ka mortar insulation thermal EPS

ʻO ka EPS granular thermal insulation mortar he mea hoʻoheheʻe wela māmā i hui pū ʻia me nā mea hoʻopaʻa inorganic, nā mea hoʻopili organik, admixtures, additives a me nā mea hoʻohui māmā i kekahi ʻāpana. Ma waena o ka EPS granular thermal insulation mortars i kēia manawa noiʻi a noiʻi, hiki ke recycled Dispersed latex pauka i ka mana nui i ka hana o ka mortar a noho i kahi kiʻekiʻe o ke kumukūʻai, no laila ua lilo ia i ka manaʻo o ka poʻe. ʻO ka hana hoʻopaʻa ʻana o ka EPS particle insulation mortar external wall insulation system mai ka polymer binder, a ʻo kāna haku ʻana he vinyl acetate/ethylene copolymer. Hiki ke loaʻa ka pauka latex redispersible ma ka hoʻomaloʻo ʻana i kēia ʻano polymer emulsion. Ma muli o ka hoʻomākaukau kūpono, ka lawe maʻalahi a me ka maʻalahi o ka mālama ʻana i ka pauka latex redispersible i ke kūkulu ʻana, ua lilo ka pauka latex loose kūikawā i mea hoʻomohala ma muli o kāna hoʻomākaukau kūpono, ka lawe ʻana a me ka mālama maʻalahi. ʻO ka hana o ka mortar insulation particle EPS e hilinaʻi nui i ke ʻano a me ka nui o ka polymer i hoʻohana ʻia. ʻO ka Ethylene-vinyl acetate latex powder (EVA) me ke kiʻekiʻe o ka ethylene maʻiʻo a me ka haʻahaʻa Tg (ke aniani hoʻololi wela) waiwai ʻoi aku ka maikaʻi o ka hana ma ke ʻano o ka ikaika hopena, ka ikaika paʻa a me ke kūpaʻa wai.

ʻO ka optimization o ka pauka latex ma ka hana o ka mortar ma muli o ka ʻoiaʻiʻo o ka pauka latex he polymer molecular kiʻekiʻe me nā hui polar. Ke hui ʻia ka pauda latex me nā ʻāpana EPS, ʻo ka ʻāpana polar ʻole i ke kaulahao nui o ka polimer pauda latex e loaʻa ka adsorption kino me ka ʻili polar ʻole o EPS. ʻO nā pūʻulu polar i loko o ka polymer ua kuhikuhi ʻia i waho ma ka ʻili o nā ʻāpana EPS, i hoʻololi ʻia nā ʻāpana EPS mai ka hydrophobicity i ka hydrophilicity. Ma muli o ka hoʻololi ʻana o ka ʻili o nā ʻāpana EPS e ka pauka latex, hoʻoponopono ia i ka pilikia e ʻike maʻalahi ai nā ʻāpana EPS i ka wai. ʻO ka lana ʻana, ka pilikia o ka hoʻopaʻa nui ʻana o ka mortar. I kēia manawa, i ka hoʻohui ʻia ʻana o ka sima a hui pū ʻia, hoʻopili ʻia nā pūʻulu polar ma ka ʻili o nā ʻāpana EPS me nā ʻāpana sima a hui pū ʻia, no laila e hoʻomaikaʻi maikaʻi ʻia ka workability o ka EPS insulation mortar. Hōʻike ʻia kēia ma ka ʻoiaʻiʻo e pulu maʻalahi nā ʻāpana EPS e ka paʻi sima, a ua hoʻomaikaʻi maikaʻi ʻia ka ikaika paʻa ma waena o lāua.

Hiki i ka Emulsion a me ka pauka latex redispersible ke hana i ka ikaika tensile kiʻekiʻe a me ka ikaika hoʻopaʻa ʻana ma nā mea like ʻole ma hope o ka hoʻokumu ʻana i ke kiʻiʻoniʻoni, hoʻohana ʻia lākou e like me ka lua o ka binder i loko o ka mortar e hui pū me ka inorganic binder cement, cement a me ka polymer e hāʻawi i ka pāʻani piha i nā ikaika kūpono e hoʻomaikaʻi i ka ka hana ana o ka moka. Ma ka nānā ʻana i ka microstructure o ka polymer-cement composite material, ua manaʻo ʻia ʻo ka hoʻohui ʻana o ka pauka latex redispersible hiki ke hana i ka polymer i kiʻiʻoniʻoni a lilo i ʻāpana o ka pā puka, a hana i ka mortar i mea holoʻokoʻa ma o ka ikaika o loko. ka mea e hoʻomaikaʻi ai i ka ikaika o loko o ka pahū. ʻO ka ikaika o ka polymer, e hoʻomaikaʻi ai i ke koʻikoʻi hemahema o ka mortar a me ka hoʻonui ʻana i ke koʻikoʻi hope. No ke aʻo ʻana i ka hana lōʻihi o ka pauka latex redispersible i ka mortar, ua ʻike ʻia e SEM ma hope o 10 mau makahiki, ʻaʻole i loli ka microstructure o ka polymer i loko o ka mortar, mālama i ka paʻa paʻa, flexural a compressive ikaika a me ka wai maikaʻi. Ua aʻo ʻia ke ʻano hana o ka ikaika adhesive tile ma luna o ka pauka latex redispersible, a ua ʻike ʻia ma hope o ka maloʻo ʻana o ka polymer i kahi kiʻiʻoniʻoni, ua hana ke kiʻi polymer i kahi pilina maʻalahi ma waena o ka mortar a me ka tile ma ka lima hoʻokahi, a ma luna. ʻO ka lima ʻē aʻe, ʻO ka polymer i loko o ka mortar e hoʻonui i ka ea o ka mortar a pili i ka hoʻokumu ʻana a me ka pulu o ka ʻili, a ma hope i ka wā o ka hoʻonohonoho ʻana he hopena maikaʻi hoʻi ka polymer i ke kaʻina hydration a me ka emi ʻana o ka sima ma ka. binder, E kōkua kēia mau mea a pau e hoʻomaikaʻi i ka ikaika pili.

ʻO ka hoʻohui ʻana i ka pauka latex redispersible i ka mortar hiki ke hoʻomaikaʻi maikaʻi i ka ikaika hoʻopaʻa ʻana me nā mea ʻē aʻe, no ka mea, ʻo ka hydrophilic latex pauka a me ka wai wai o ka hoʻokuʻu sima e komo i loko o nā pores a me nā capillaries o ka matrix, a komo ka pauka latex i nā pores a me nā capillaries. . Hoʻokumu ʻia ka kiʻiʻoniʻoni i loko a hoʻopaʻa paʻa ʻia ma ka ʻili o ka substrate, no laila e hōʻoia i ka ikaika paʻa maikaʻi ma waena o nā mea cementitious a me ka substrate.