ʻO ka pauka latex redispersible he mea hoʻohana maʻamau i ka gelling organik. He pauka i loaʻa ma ka hoʻomaloʻo ʻana i kahi emulsion polymer me ka waiʻona polyvinyl ma ke ʻano he colloid pale. Hiki ke hoʻopuehu ʻia kēia pauka i ka wai ma hope o ka hui ʻana i ka wai. , hana ana i emulsion. ʻO ka hoʻohui ʻana i ka pauka latex redispersible hiki ke hoʻomaikaʻi i ka hana paʻa ʻana o ka wai o ka mortar sima hou i hui pū ʻia, a me ka hana hoʻopaʻa ʻana, ka maʻalahi, ka impermeability a me ke kūpaʻa ʻana o ka mortar sima paʻakikī.
Ka hopena o ka pauda latexr i ka ikaika pili o nā mea hana sima
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. Ua aʻo ʻia ka hana lōʻihi o ka pauka latex redispersible i loko o 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, a ua mālama ʻia ka paʻa paʻa, flexural a compressive resistance. ka ikaika a me ka pale wai maikaʻi. Ua aʻo ka pauka latex redispersible i ke ʻano hana o ka ikaika adhesive tile, a ʻike ʻia ma hope o ka maloʻo ʻana o ka polymer a hana ʻia i kiʻiʻoniʻoni, hana ke kiʻi polymer i kahi pilina maʻalahi ma waena o ka mortar a me ka tile ma kekahi lima, a ma ka ʻO ka lima ʻē aʻe, ka mortar hou ʻO ka polymer medium 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, ʻoi aku ka maikaʻi o ka polymer i ke kaʻina hydration a me ka emi ʻana o ka sima i loko. ʻO ka mea paʻa, e kōkua kēia mau mea i ka hoʻomaikaʻi ʻana i ka ikaika paʻa.
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, pēlā e hōʻoia ai i ka ikaika paʻa maikaʻi ma waena o nā mea cementitious a me ka substrate.
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.
Ka manawa hoʻouna: Mar-14-2023