ʻO ka EPS granular thermal insulation mortar he mea hoʻoheheʻe wela māmā i hui pū ʻia me ka binder inorganic, binder organic, admixture, admixture a me ka aggregate māmā i kekahi ʻāpana. I ka noiʻi ʻana a me ka noi ʻana o ka mortar insulation particle EPS, ʻo ka recyclable redispersible latex pauka he mana nui i ka hana o ka mortar a noho i kahi kiʻekiʻe kiʻekiʻe o ke kumukūʻai, no laila ʻo ia ke kumu o ka nānā. ʻO ka hana hoʻopaʻa ʻana o ka EPS particle thermal insulation mortar external wall thermal insulation system mai ka polymer binder, a ʻo kāna ʻāpana he vinyl acetate/ethylene copolymer. Hiki ke hoʻomaloʻo ʻia kēia ʻano emulsion polymer no ka loaʻa ʻana o ka pauka latex redispersible. Ma muli o ka hoʻomākaukau pono ʻana o ka pauka latex redispersible i ke kūkulu ʻana, ka halihali kūpono a me ka mālama maʻalahi, ua lilo ka pauka manuahi no nā polymers i mea hoʻomohala ma muli o kāna hoʻomākaukau pololei ʻana, ka halihali kūpono 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 pauka (EVA) me ke kiʻekiʻe o ka ethylene maʻiʻo a me ka haʻahaʻa Tg (ke aniani hoʻololi wela) waiwai ʻoi aku ka maikaʻi o nā waiwai ma ke ʻano o ka ikaika hopena, ka ikaika paʻa a me ke kūpaʻa wai.
ʻO ka maikaʻi o ka hana ʻana o ka pauka latex redispersible ma ka mortar ma muli o ke ʻano o ka pauka polymer he polymer molecular kiʻekiʻe me nā hui polar. Ke hui pū ʻia ʻo RDP me nā ʻāpana EPS, e hoʻopili kino ka ʻāpana non-polar i ke kaulahao nui o ka pauka polymer me ka ʻili non-polar o EPS. ʻO nā pūʻulu polar i loko o ka polymer e kuhikuhi ʻia i waho ma ka ʻili o nā ʻāpana EPS, e hoʻololi i nā ʻāpana EPS mai ka hydrophobic a i ka hydrophilic. Ma muli o ka hoʻololi ʻana o ka ʻili o nā ʻāpana EPS e ka pauka polymer, ua hoʻoholo ʻia ka pilikia e maʻalahi nā ʻāpana EPS e hālāwai me ka wai. Ke lana nei nā pilikia nui o ka delamination mortar. I kēia manawa, i ka hoʻohui ʻana i ka sima a me ka hoʻoulu ʻana, hoʻopili nā pūʻulu polar ma ka ʻili o nā ʻāpana EPS me nā ʻāpana sima a hui pū ʻia, kahi e hoʻomaikaʻi nui ai i ka workability o ka EPS insulation mortar. Hōʻike ʻia kēia ma ka ʻoiaʻiʻo e pulu maʻalahi nā ʻāpana EPS e ka slurry sima, a ua hoʻomaikaʻi maikaʻi ʻia ka ikaika paʻa ma waena o nā mea ʻelua.
Ma hope o ka hoʻokumu ʻia ʻana o ka emulsion a me ka pauka latex redispersible i kahi kiʻiʻoniʻoni, hiki iā lākou ke hana i ka ikaika tensile kiʻekiʻe a me ka ikaika hoʻopaʻa i nā mea like ʻole. Hoʻohana ʻia lākou e like me ka lua o ka mea hoʻopaʻa i loko o ka mortar e hui pū me ka sima inorganic binder, sima a me ka polymer. E pāʻani i ka ikaika kūpono a hoʻomaikaʻi i ka hana o ka mortar. 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 kiʻiʻoniʻoni polymer i ʻāpana o ka pā puka, a hana i ka mortar i mea holoʻokoʻa ma o ka ikaika o loko, e hoʻomaikaʻi ai i ka loko. ikaika o ka hamo. ʻO ka ikaika polymer, e hoʻonui ai i ke koʻikoʻi hemahema o ka mortar a hoʻonui i ke koʻikoʻi hope loa. No ke aʻo ʻana i ka hana lōʻihi o ka pauka latex redispersible i loko o ka mortar, ʻike ʻia e ka nānā ʻana i ka microscope electron, ma hope o 10 mau makahiki, ʻaʻole i loli ka microstructure o ka polymer i loko o ka mortar, mālama i ka paʻa paʻa, ka ikaika flexural a me ka ikaika compressive a me ka Hydrophobic maikaʻi. . ʻO ka lawe ʻana i ka pauka latex redispersible e like me ka mea noiʻi, ua aʻo ʻia ke ʻano hana o ka ikaika hoʻopaʻa tile, a ua ʻike ʻia ma hope o ka maloʻo ʻana o ka polymer i loko o 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 kekahi ʻaoʻao, ʻo nā polymers i loko o ka mortar e hoʻonui i ka ea o ka mortar, e pili ana i ka palahalaha a me ka pulu o ka ʻili, a ma hope i ka wā o ka hoʻonohonoho ʻana, he hopena maikaʻi hoʻi nā polymers i ke kaʻina hydration a me ka emi ʻana o ka sima. ʻO nā mea hoʻopili, kōkua kēia mau mea a pau e hoʻonui i ka ikaika o ka pilina.
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 ke kahe wai o ka pauka hydrophilic polymer a me ka hoʻokuʻu sima e komo i loko o nā pores a me nā capillaries o ka matrix, aʻo ka pauka latex e komo i loko o nā pores a i loko o ka. capillary. Hoʻokumu ʻia ka kiʻiʻoniʻoni i loko a hoʻopili paʻa ʻia ma ka ʻili o ka substrate, pēlā e hōʻoia ai i ka ikaika paʻa maikaʻi ma waena o ka mea gelled a me ka substrate.
Ka manawa hoʻouna: Iune-16-2023