Paura pūmua ka taea te whakamarara anō (RDP)He momo tāpiri paura pūmua te paura pūmua i hangaia mai i te whakamomona pūmua mā te whakamaroke rehu. Ko tōna āhuatanga matua ko tōna kaha ki te marara anō hei whakamomona pūmua pumau ina pā ki te wai, ā, ka mahi i tētahi mahi whakarerekē rite ki te whakamomona wai i roto i ngā pūnaha moata ranunga-maroke. Nā te whakaurunga o te RDP kua tino whakapai ake i te mahi, te piri, me te pakari o ngā rauemi hanga, ā, he wāhanga matua nui tēnei i roto i ngā hanganga piri moata ranunga-maroke me ngā tāera hou.
1.Mō ngā āhuatanga mahi, he tino pai te āhua o te RDP ki te horapa anō me ngā āhuatanga hanga kiriata. Ina whakaohokia ki te wai, ka tere te horapa o te paura RDP hei hanga i ngā matūriki emulsion ōrite, ā, i te wā e whakamaroke ana, ka hangaia he kiriata polymer matotoru, tonu. Ka hono pai tēnei kiriata polymer i te konganuku kore-waro ki te mata o te papa, ka whakapai ake i te kaha me te ngāwari o te hononga o te rauemi. He taumata ngāwari anō hoki tō te paparanga kiriata, ka mimiti i ngā rerekētanga ahotea i waenga i ngā paparanga turanga me ngā paparanga o runga, ka ārai i te pakaru me te marere.
2.Ka taea e te RDP te whakapai ake i te mahi a te moata. Mā te tāpiri i te nui o te RDP e tika ana ka whakapai ake i te pupuri wai, te rere, me te hinu o te moata, ka taea ai te tono maeneene ake, kia ōrite ake, me te whakaiti i te toto me te wehewehe. Hei tāpiri, ka whakarei ake te RDP i ngā āhuatanga ārai-totoka me te ārai-paura o te moata, ka pai ake te pumau o te tono paparanga matotoru. Mō ngā piripiri taera, ka whakapakari te RDP i te hononga i waenga i te taera me te papa, kia mau ai te piri mō te wā roa.
3.Mō te roa o te mau, he tino pai te ātete o te RDP ki te pakaru, ki te huka-rewa, me te ātete ki te huarere. Ka mahi te kiriata pūmua hei ārai i te makuku me ngā hau, ka whakaiti i te urunga mai o te makuku o waho, ā, ka whakaroa i te koroheketanga o te moata. Ahakoa i raro i ngā huringa wera me te makariri, i ngā taiao makuku rānei, ka mau tonu te kaha me te piri o ngā rauemi kua whakarerekētia e te RDP, he mea tino nui tēnei mō ngā pūnaha whakamarumaru pakitara o waho me ngā moata whakatika.
4.I te taha matū, ko te RDP he copolymer o ngā monomers rerekē, pērā i te vinyl acetate-ethylene (VAE), te acrylates, me te styrene-butadiene. Ko ngā momo polymer rerekē e whakatau ana i te taurite i waenga i te ngāwari, te ātete wai, me te piri. Ko ngā RDP e hangai ana ki te VAE ngā mea e whakamahia whānuitia ana nā te mea he pai rawa atu ā rātou mahi whānui. E mōhiotia ana ngā RDP e hangai ana ki te acrylate mō tō rātou ātete huarere me te ngāwari, e pai ai mō ngā rauemi pakitara o waho kounga teitei. He maha ngā wā ka whakamahia ngā RDP e hangai ana ki te styrene-butadiene i roto i ngā pūnaha e hiahia ana kia tino ngāwari me te ātete ki te pakū.
5.I roto i ngā mahi whaihua, he whānuitia te whakamahinga o ngā RDP i roto i ngā whakatakotoranga pēnei i ngā piri tāera, ngā pūnaha whakamahana o waho (EIFS), ngā mota whakaōrite-ake, ngā mota whakatika, ngā mota paraikete, ngā mota ārai-wai, me ngā kaihoko atanga. Hei tauira, i roto i ngā piri tāera, ka whakapai ake ngā RDP i te kaha o te here maroke me te mākū me ngā āhuatanga ārai-paheke; i roto i ngā mota whakaōrite, ka whakarei ake i te ngāwari o te pūnaha me te ātete ki te pakaru; i roto i ngā mota whakaōrite-ake, ka whakapai ake ngā RDP i te rere me te whakaiti i te paura; ā, i roto i ngā mota ārai-wai, ka whakarei ake i te ātete me te roa, ka whakapakari i ō rātou āhuatanga tiaki.
6.Nā roto i ōna āhuatanga hanga kiriata pūmua tino pai me tōna pānga mahi tahi me ngā papa kore-waro,RDPka whakarei ake i te mahi a ngā pūnaha moata ranunga maroke. Ehara i te mea ka arotau noa i te wheako hanga engari ka whakarato hoki i te roa o te mau me te urutau ki ngā rauemi, ka waiho hei tāpiri matua mō te whakatutuki i te mahi teitei me te pumau i roto i ngā rauemi hanga hou. I te whanaketanga tonu o ngā rauemi hanga matomato me ngā pūnaha ranunga maroke mahi-teitei, ka haere tonu te auahatanga hangarau RDP me te whānuitanga tono, ka noho hei huarahi matua mō ngā rauemi hanga mahi ā muri ake nei.
Wā tuku: Oketopa-17-2025