Ngā hiri rapa polyurethane, he mea hanga mai i ngā rauemi rapa polyurethane, he wāhanga nui i roto i te whānuitanga o ngā tono ahumahi. He maha ngā āhua o ēnei hiri, tae atu ki ngā mowhiti-O, ngā mowhiti-V, ngā mowhiti-U, ngā mowhiti-Y, ngā hiri tapawhā rite, ngā hiri āhua ritenga, me ngā horoi hiri.
Ko te rapa polyurethane, he pūmua hangai, e hono ana i te āputa i waenga i te rapa maori me ngā kirihou tuku iho. Ko te rapa polyurethane e whakamahia nuitia ana i roto i te tukatuka pehanga pepa whakarewa, ko te rapa polyurethane e pā ana ki tēnei he momo whakarewa polyester. Ka hangaia mai i te waikawa adipic me te ethylene glycol, ka hua ake he pūmua me te taumaha ngota o te 2000 pea. Ka tauhohehia anō tēnei pūmua hei hanga i te prepolymer me ngā rōpū pito isocyanate. Kātahi ka konatunatua te prepolymer ki te MOCA (4,4′-methylenebis(2-chloroaniline)) ka maka ki roto i ngā pokepoke, ā, whai muri ko te whakamomona tuarua hei hanga hua rapa polyurethane me ngā taumata pakeke rerekē.
Ka taea te whakarite i te pakeke o ngā hiri rapa polyurethane kia tutuki ai ngā whakaritenga tukatuka whakarewa motuhake, mai i te 20A ki te 90A i runga i te tauine pakeke o Shore.
Ngā Āhuatanga Matua o te Mahi:
- Ātete Paku Tino Pai: Ko te rapa polyurethane te momo rapa tino kaha rawa atu i roto i ngā momo rapa katoa. E whakaatu ana ngā whakamātautau taiwhanga ko tōna ātete pakū he 3 ki te 5 ngā wā i tērā o te rapa tūturu, ā, i ngā whakamahinga tūturu he maha ngā wā ka kitea he 10 ngā wā te roa o tōna pakari.
- Te Kaha me te Ngāwari: I roto i te awhe pakeke o te Shore A60 ki te A70, ka whakaatuhia e te rapa polyurethane te kaha teitei me te ngāwari pai rawa atu.
- Āraitanga Pai me te Ngongo Ru: I te pāmahana rūma, ka taea e ngā wāhanga rapa polyurethane te ngongo i te 10% ki te 20% o te pūngao wiri, me te nui ake o ngā reiti ngongo i ngā auau wiri teitei ake.
- He Ātete Tino Pai ki te Hinu me te Matū: He iti noa te kaha o te rapa polyurethane ki ngā hinu kohuke kore-polar, ā, kāore e pāngia e ngā wahie (pērā i te hinu kerosene me te penehīni) me ngā hinu miihini (pērā i te hinu waipēhi me te hinu whakahinuhinu), e pai ake ana i ngā rapa whānui me te rapa nitrile e whakataetae ana. Heoi, he nui te pupuhi i roto i ngā waipiro, ngā esters, me ngā hauwaiwaro kakara.
- Tauwehenga Waku Teitei: I te nuinga o te wā kei runga ake i te 0.5.
- Ngā Āhuatanga Tāpiri: He ātete pai ki te pāmahana iti, te ātete ki te ozone, te ātete ki te irahiko, te whakamarumaru hiko, me ngā āhuatanga piri.
Ngā tono:
Nā te mea he pai ake ōna āhuatanga ā-tinana me ā-mīhini, he maha ngā whakamahinga o te rapa polyurethane i roto i ngā mahi tino pai, tae atu ki ngā hua ātete-kakahu, ngā mea ātete-hinu kaha-teitei, me ngā wāhanga pakeke-teitei, teitei-whakawhitinga. He whānui te whakamahinga puta noa i ngā momo ahumahi:
- Mīhini me te Motuka: Te hanga i ngā wāhanga ārai aukati auau-teitei, ngā wāhanga rapa ārai-wiri, ngā puna rapa, ngā hononga, me ngā wāhanga mīhini kakahu.
- Ngā Hua Ātete-Hinuhinu: Te hanga i ngā roera tā, ngā hiri, ngā ipu wahie, me ngā hiri hinu.
- Taiao Waku Pakari: Whakamahia ki roto i ngā paipa kawe, ngā arai taputapu huri, ngā mata, ngā tātari, ngā kapu hū, ngā wira taraiwa waku, ngā pū, ngā papa pēki, me ngā potae pahikara.
- Te Pēhi Matao me te Piko: He rauemi mō ngā tukanga pēhi matao me te piko hou, hei whakakapi i ngā pokepoke maitai e pau ana te wā, e nui ana hoki te utu.
- Rapa Huka: Mā te whakamahi i te tauhohenga o ngā rōpū isocyanate me te wai hei tuku i te CO2, ka taea te whakaputa i te rapa pahuka māmā me ngā āhuatanga miihini tino pai, he mea tino pai mō te whakamahana, te whakamahana wera, te ārai oro, me ngā tono ārai-wiri.
- Ngā Whakamahinga Hauora: Whakamahia i roto i ngā wāhanga rapa mahi, ngā oko toto horihori, te kiri horihori, ngā ngongo werohanga, ngā rauemi whakatika, me ngā tono niho.
Wā tuku: Hepetema-17-2025