Ko te moata whakamahana wera EPS he rauemi whakamahana wera māmā e whakaranua ana ki ngā here kore-waro, ngā here waro, ngā ranunga, ngā tāpiringa me ngā whakakotahitanga māmā i roto i tētahi ōwehenga. I roto i ngā moata whakamahana wera EPS e rangahauhia ana, e whakamahia ana hoki i tēnei wā, ka taea te hangarua. He nui te awe o te paura rapa marara ki te mahi a te moata, ā, he nui te utu, nō reira kua arotahi te tangata ki tēnei. Ko te mahi here o te pūnaha whakamahana pakitara o waho o te moata whakamahana matūriki EPS i ahu mai i te here polymer, ā, ko tōna hanganga he vinyl acetate/ethylene copolymer te nuinga. Ka taea te whiwhi paura rapa marara anō mā te whakamaroke rehu i tēnei momo emulsion polymer. Nā te whakarite tika, te kawe watea me te rokiroki ngāwari o te paura rapa marara anō i roto i te hanganga, kua noho te paura rapa wetewete motuhake hei ia whanaketanga nā te whakarite tika, te kawe watea me te rokiroki ngāwari. Ko te mahi a te moata whakamahana matūriki EPS e whakawhirinaki ana ki te momo me te nui o te polymer e whakamahia ana. He pai ake te mahi a te paura rapa ethylene-vinyl acetate (EVA) he nui te ihirangi ethylene me te iti o te uara Tg (pāmahana whakawhiti karāhe) e pā ana ki te kaha pānga, te kaha here me te ātete wai.
Ko te whakapai ake i te mahi a te paura rapa ki te mahi a te moata nā te mea he pūmua ngota teitei te paura rapa me ngā rōpū porotaka. Ina konatunatua te paura rapa ki ngā matūriki EPS, ka puta te wāhanga kore-porotaka i roto i te mekameka matua o te pūmua paura rapa. Ka puta te mimiti ā-tinana ki te mata kore-porotaka o te EPS. Ka anga atu ngā rōpū porotaka i roto i te pūmua ki waho i runga i te mata o ngā matūriki EPS, kia huri ai ngā matūriki EPS mai i te wai-aro ki te wai-aro. Nā te whakarerekētanga o te mata o ngā matūriki EPS e te paura rapa, ka whakatauhia te raruraru ka ngāwari te pāngia o ngā matūriki EPS e te wai. Te mānu, te raruraru o te paparanga nui o te moata. I tēnei wā, ina tāpirihia te sima me te whakaranu, ka mimitihia ngā rōpū porotaka e piri ana ki te mata o ngā matūriki EPS ki ngā matūriki sima ka hono tata, kia tino pai ake ai te mahi a te moata whakamahana EPS. Ka kitea tēnei i roto i te meka ka ngāwari te mākū o ngā matūriki EPS e te whakapiri sima, ā, ka tino pai ake te kaha here i waenga i ngā mea e rua.
Ka taea e te paura rapa whakamarara anō te hanga i te kaha kume teitei me te kaha here ki runga i ngā rauemi rerekē i muri i te hanganga kiriata, ka whakamahia hei hononga tuarua i roto i te moata hei whakakotahi me te sima hononga kore-waro, te sima me te polymer. Ka whakapau kaha ki ngā kaha e rite ana hei whakapai ake i te mahi a te moata. Mā te tirotiro i te hanganga moroiti o te rauemi hiato polymer-ciment, e whakaponohia ana mā te tāpiri i te paura rapa whakamarara anō ka taea te hanga i te polymer hei hanga kiriata ka noho hei wāhanga o te pakitara kōhao, ka hanga hoki i te moata hei katoa mā te kaha o roto, ka whakapai ake i te kaha o roto o te moata. Ko te kaha o te polymer, nā reira ka whakapai ake i te ahotea rahunga o te moata me te whakanui ake i te taumahatanga mutunga. Hei ako i te mahi roa o te paura rapa whakamarara anō i roto i te moata, i kitea e te SEM i muri i te 10 tau, kāore te hanganga moroiti o te polymer i roto i te moata i rerekē, e mau tonu ana te hononga pumau, te kaha piko me te kaha pēhi me te ātete wai pai. I rangahauhia te tikanga hanganga o te kaha piri o te taera i runga i te paura rapa ka taea te whakamarara anō, ā, i kitea i muri i te whakamaroketanga o te pūmua hei kiriata, ka hanga e te kiriata pūmua he hononga ngāwari i waenga i te moata me te taera i tetahi taha, ā, i tetahi atu taha, ka whakanuia e te pūmua i roto i te moata te nui o te hau o te moata, ā, ka pā ki te hanganga me te mākū o te mata, ā, i te wā o te tukanga whakatakoto, he pānga pai hoki te pūmua ki te tukanga whakamakuku me te whakahekenga o te sima i roto i te here. Ka āwhina ēnei katoa ki te whakapai ake i te kaha o te here.
Mā te tāpiri i te paura rapa ka taea te whakamarara anō ki te moata ka taea te whakapai ake i te kaha o te piri ki ētahi atu rauemi, nā te mea ka uru te paura rapa hydrophilic me te wāhanga wai o te sima whakatārewatanga ki roto i ngā pūwero me ngā capillaries o te matrix, ā, ka uru te paura rapa ki roto i ngā pūwero me ngā capillaries. Ka hangaia te kiriata o roto, ka piri pai ki te mata o te papa, kia pai ai te kaha o te piri i waenga i te rauemi sima me te papa.
Te wā tuku: 20-Pepuere-2023