I roto i ngā mahi ahumahi, he mea nui te whiriwhiri rauemi hei whakarite i te roa, te mahi, me te whai hua o te utu. Ko ngā rauemi rapa hangai e rua e whakamahia whānuitia ana ko te rapa nitrile (NBR) me te ethylene propylene diene monomer (EPDM). Ahakoa he āhuatanga me ngā whakamahinga motuhake o ngā rauemi e rua, he mea nui te mārama ki ō rātou rerekētanga hei whiriwhiri i te rauemi tika mō ngā hiahia motuhake.
Ngā Kai me ngā Āhuatanga
He copolymer te NBR i hangaia mai i te acrylonitrile me te butadiene. Ko te nui o te acrylonitrile i roto i te NBR kei waenga i te 18% me te 50%, ka pā ki tōna ātete hinu me ōna āhuatanga miihini. E mōhiotia ana te NBR mō tōna ātete pai ki ngā hinu, ki ngā wahie me ētahi atu matū, ā, he rauemi pai mō ngā tono motuka me ngā tono ahumahi e pā pinepine ana ki ēnei matū. He pai hoki te kaha kume, te ātete ki te pakū me te ngāwari o te NBR, he mea nui mō ngā hiri, ngā gasket me ngā ngongo.
Ko te EPDM, i tētahi atu ringa, he terpolymer i hangaia mai i te ethylene, te propylene, me te wāhanga diene. Mā tēnei hanganga ahurei ka tino pai te ātete o te EPDM ki te huarere, te pumau o te UV, me te ātete ki te ozone. He tino pai te EPDM mō ngā tono o waho pērā i ngā kiriuhi tuanui, ngā whitiki huarere motuka, me ngā hiri e hiahia ana ki te tu atu ki ngā āhuatanga taiao kino. Hei tāpiri, ka noho ngāwari tonu te EPDM i ngā pāmahana iti, ā, he mea pai mō ngā tono āhuarangi makariri.
Ātete wera
Ko te ātete pāmahana teitei tētahi atu rerekētanga nui i waenga i te NBR me te EPDM. Ko te tikanga he pai te mahi a te NBR i roto i te awhe pāmahana mai i te -40°C ki te 100°C (-40°F ki te 212°F), i runga i te hanganga motuhake. Heoi, mā te roa o te wā e noho ana ki ngā pāmahana teitei ka pakaru pea. He rerekē, ka taea e te EPDM te tu atu i te awhe pāmahana whānui ake, mai i te -50°C ki te 150°C (-58°F ki te 302°F), he mea pai mō ngā tono e hiahia ana kia tino ngāwari i roto i ngā āhuatanga tino kino.
Ātete matū
Mō te ātete matū, he pai te mahi a te NBR i roto i ngā taiao kei roto ngā hinu me ngā wahie. Nā tōna kaha ki te ātete i ngā hua kei roto i te hinu, he maha ngā wā ka whakamahia te NBR i roto i te umanga motuka mō ngā ngongo wahie, ngā mowhiti-O, me ngā hiri. Heoi, he iti te ātete o te NBR ki ngā whakarewa polar, ngā waikawa, ngā kawa rānei, ka taea ai e ia te pupuhi, te pirau rānei.
Ko te EPDM ia, he tino ātete ki te wai, ki te mamaoa, me te whānuitanga o ngā matū, tae atu ki ngā waikawa me ngā kawakore. Nā tēnei he mea tino pai mō te umanga tukatuka matū me ngā mahi o waho e pāngia ana e te makuku. Heoi, kāore te EPDM e pai mō te whakamahi me ngā hinu me ngā wahie, nā te mea ka pupuhi, ka ngaro ōna āhuatanga miihini.
tono
Ko te whakamahinga o te NBR me te EPDM e whakaata ana i ōna āhuatanga ahurei. He whānuitia te whakamahinga o te NBR i roto i ngā pūnaha wahie, ngā gaskets me ngā hiri i roto i te ao motuka, tae atu ki ngā tono ahumahi pēnei i ngā hiri hinu me ngā ngongo. Nā tōna ātete ki te hinu, he mea tino nui tēnei i roto i ngā taiao e pāngia ana e ngā hua hinu.
He rerekē, he pai ake te EPDM mō ngā tono e hiahia ana kia ātete ki te huarere, pērā i te tuanui, ngā hiri matapihi, me te tango i ngā mea e ārai ana i te huarere o te motuka. Nā tōna ātete ki te UV me te ozone, he mea tino pai mō te whakamahi i waho, e whakarite ana i tōna roa me tōna mahi ahakoa i roto i ngā āhuatanga kino.
Hei whakarāpopototanga, ko te whiriwhiri i ngā rauemi NBR me te EPDM e whakawhirinaki ana ki ngā hiahia motuhake o te tono. Ko te NBR te rauemi whiriwhiri mō te ātete ki te hinu me te wahie, ko te EPDM ia he tino pai mō ngā tono e hiahia ana ki te ātete ki te huarere me te ozone. Mā te mārama ki ngā rerekētanga o te hanganga, ngā āhuatanga, te ātete ki te pāmahana teitei, te ātete matū, me ngā tono ka āwhina i ngā kaihanga me ngā miihini ki te whakatau whai whakaaro i te wā e whiriwhiri ana i te rauemi tika hei whakatutuki i ā rātou hiahia.
He hua whakamarumaru NBR me EPDM tā Kingflex. Mēnā he pātai āu, tēnā koa tukuna mai he pātai ki te tīma Kingflex i ngā wā katoa.
Wā tuku: Mei-15-2025
