Ka pakaru tētahi hiri iti i roto i tō takirere, ka puta he turuturu nui. Nā tēnei pakaru ohorere ka roa te pūnaha e kore e mahi, ka nui te utu mō ngā pakaru, ā, ka pouri hoki ngā kiritaki e whakapae ana i tō hua mō te hapa.

Kōwhiria te EPDM mō te nuinga o ngā tono wai, inā koa mō te pānga o waho, te hihi o te rā, te ozone rānei. Kōwhiria te NBR mō ngā tono e pā ana ki te hinu, te hinu, te ngako, ngā wai rānei e hangai ana ki te hauwai. Ko te kōwhiringa tika e whakawhirinaki ana ki te wai me te taiao.

I kōrero māua ko taku hoa a Budi mō tētahi raruraru i pā ki tētahi o āna kiritaki. I te tuku mai rātou i ngā takirere mō tētahi mahi pāmu ika i Initonīhia e whakamahi ana ingā kaihanga ozonekia mau tonu te ma o te wai. I muri i ētahi marama, ka tīmata te turuturu o ngā takirere. Ehara i te tinana takirere te raruraru; engari ko ngā hiri NBR paerewa i roto. I whakaekea te rapa e te ozone, ā, ka pakarukaru. I tohutohu mātou kia huri ki ngā takirere me ngā hiri EPDM, ā, i whakatauhia tonutia te raruraru. Ko ēnei taipitopito rauemi iti nei e whakatau ana i te angitu, i te korenga rānei o tētahi kaupapa.

Ko tēhea te mea pai ake, EPDM, NBR rānei?

E rua ngā kōwhiringa hiri mō te takirere, ā, he iti ake te utu mō te kōwhiringa NBR. Kei te hiahia koe ki te whiriwhiri i tēnei hei penapena utu, engari kei te āwangawanga koe kāore pea i te whakatau tika.

Kāore tetahi o ngā rauemi i te pai ake i te nuinga; he rerekē ngā mahi i hangaia ai. He pai ake te EPDM mō te ātete ki te wai, te huarere, me te wera. He pai ake te NBR mō te ātete ki ngā hinu, ngā wahie, me ngā hinu whakahinuhinu.

He hapa noa te whakaaro he "pai ake" te tangata. Ko te kōwhiringa kei runga i te hototahitanga matū.EPDM (Ethylene Propylene Diene Monomer)He tino pumau te hanganga matū, ā, he tino ātete ki te huarere, ki te hihi o te rā (UV), ki te ozone, ki te wai wera me te wai matao. Nā tēnei he mea tino pai mō te nuinga o ngā ahumahi e pā ana ki te wai pērā i te whakamakuku, ngā puna kaukau, me ngā putorino whānui.NBR (Rapa Nitrile Butadiene), i tētahi atu ringa, e mōhiotia ana mō tōna ātete pai ki ngā hinu, ngā wahie, me ngā ngako e ahu mai ana i te hinu. Heoi, ka tere te pakaru ina pāngia e te ozone me te mārama UV. Nō reira, mēnā he pai te takirere mō te raina wai, ko te EPDM te kōwhiringa pai rawa atu. Mēnā he pūnaha e whakahaere ana i ngā hinu, i ētahi matū rānei, ko te NBR anake te whakautu tika.

He aha te rerekētanga i waenga i te rapa EPDM me te rapa PVC?

Kei te pātai tō kiritaki mō te "rapa" i roto i te takirere. He ngāwari te pohehe i waenga i te kirihou mārō o te tinana takirere me te rauemi ngāwari i whakamahia mō ngā hiri i roto.

He rerekē rawa ngā rauemi mō ngā mahi rerekē. He kirihou pakari te PVC e whakamahia ana hei hanga i te tinana me te pōro o te takirere. He rapa hangai ngāwari te EPDM e whakamahia ana hei hanga i ngā mowhiti-O me ngā nohoanga e hanga ana i te hiri.

He wāhi tēnei e pōhēhē pinepine ana. Kia māmā noa iho. Whakaarohia te takirere he tatau. Ko te PVC te anga tatau pakari, pakari, me te tatau tonu. Māna e whakarato te hanganga me te kaha. Ko te EPDM te rapa ngāwari e whakarārangi ana i te anga. Ina kati koe i te tatau, ka pēhia te takirere hei hanga i tētahi hiri tino pai, ātete-wai. Kāore e taea te hanga i tētahi tatau mai i ngā hiri huarere, ā, kāore e taea te hanga i tētahi hiri ngāwari mai i tētahi anga tatau pakari. I roto i ā mātou takirere, ka whakaratohia e te PVC te whare ātete-pēhanga. Ka whakaratohia e te EPDM ngā wāhanga ngohengohe, ngāwari o roto e aukati ana i te rere o te wai. Kāore he mea e kiia ana he hiri "rapa PVC" i roto i ēnei takirere; he rauemi motuhake, motuhake ngā hiri.

He aha te rerekētanga i waenga i te EPDM me te NBR 70?

Kei te titiro koe ki tētahi pepa whakatakotoranga, ā, ka kite koe i te "NBR 70". E mōhio ana koe ki te tikanga o te NBR, engari kāore koe i te tino mōhio ki te tikanga o te tau "70", me tōna whakataurite ki te EPDM.

Ko te "70″ i roto i te NBR 70 e pā ana ki tōna durometer, te whakatauranga pakeke rānei. E tohu ana i te pakeke o te rapa. He rerekē ngā pakeketanga o te EPDM me te NBR, ko te 70 Shore A te paerewa noa.

Ehara te tau i te wāhanga o te momo rauemi; he ine i ōna āhuatanga ā-tinana. Ka inehia te pakeketanga o ngā rapa ngohengohe i runga i te "Takutai A"tauine. Ko te ine matotoru o te 70 he mea tino noa, he pakeke noa iho. He pakari kia kore ai e panaia i raro i te pēhanga engari he ngāwari tonu kia pai ai te hiri. Ka kitea e koe te NBR 50 (ngawari ake) te NBR 90 rānei (he pakeke ake). Pērā anō hoki mō te EPDM; ka taea hoki e koe te EPDM 70. Nō reira, ko te whakataurite tūturu kei waenganui i ngā rauemi turanga—EPDM me te NBRMā te tau pakeke e whakaatu ki a koe mēnā he pai mō te pēhanga o tō pūnaha. Mō te nuinga o ngā tono wai me te hau paerewa, ka whakaratohia e te hiri 70 te taurite tino pai o te mahi me te roa.

He aha te whakatauranga pāmahana o te EPDM me te NBR?

Me whiriwhiri koe i tētahi takirere mō tētahi pūnaha ka tino wera i te rā, ka tino makariri rānei i te takurua. Mēnā ka whiriwhiri koe i tētahi hiri e kore e kaha ki te tu atu i te pāmahana, ka pakarukaru, ka turuturu hoki.

He pai ake te awhe pāmahana o te EPDM, mai i te -50°C ki te 150°C (-58°F ki te 302°F). He iti ake te awhe pāmahana o te NBR, mai i te -40°C ki te 120°C (-40°F ki te 248°F).

Ko te mahi pāmahana tētahi o ngā take nui e pai ai te whiriwhiri i te EPDM. Nā tōna kaha ki te noho ngāwari i ngā pāmahana tino iti, ka nui ake tōna pono i ngā āhuarangi makariri. Nā te pāmahana teitei ake, ka taea e ia te whakahaere i ngā raina wai wera, ā, he iti ake te tūponotanga ka pirau i roto i ngā taputapu e noho ana i te rā wera. Ahakoa he pai te NBR, ka pakeke, ka pakarukaru hoki ina tino makariri, ka taea ai te whakararu i tōna kaha ki te hiri. I ngā pāmahana teitei, ka tere ake te tawhito me te whakapakeke i te EPDM. Koinei te take i Haina, he maha ngā takirere paerewa, iti te utu e whakamahi ana i te NBR, engari ka tūtohu tonu mātou i te EPDM mō ngā tono katoa e pāngia ana e te pāmahana tino teitei, e hiahia ana rānei kia pono mō te wā roa.

Whakataurite Tere o ngā Rauemi Hiri

Whakamutunga

Mō te wai, te huarere, me te pāmahana tino kino, whiriwhiria te EPDM. Mō ngā hinu me ngā wahie, whiriwhiria te NBR. Ko te whakataurite i te hiri ki te tono te mea ngaro ki tētahi takirere PVC pono, roa te mau, kāore e turuturu.