Whakaahuatanga Poto:
He kohuke maha ngā whakamahinga, he mea nui hoki te paura tāki, ā, he mea nui tēnei i roto i te hanga hiri rapa, e huri haere ana i te ahumahi me ōna āhuatanga whakamiharo. I roto i te ao o ngā hiri ahumahi, he mea nui te pono me te pakari, ka puta te paura tāki hei mea whakarerekē i te kēmu, e tuku ana i ngā painga maha e whakarei ake ana i te mahi me te roa o te ora o ngā hiri rapa.
Ko tētahi o ngā painga matua o te paura talc i roto i te hanga hiri rapa ko tōna kaha ki te whakarei ake i te whakaora tere. I roto i ngā mahi ahumahi, ka pāngia ngā hiri e te ahotea miihini tonu, tae atu ki te pēhitanga, te totoro, me te piko. Hei tauira, ka tūwhera, ka kati hoki ngā hiri tatau i roto i ngā whare arumoni, ko ngā hiri miihini motuka ia ka pāngia e ngā rerekētanga pēhanga hihiri i te wā e whakahaerehia ana. He mea nui te hanganga pai, lamellar o te paura talc ki te aro atu ki ēnei wero. I te taumata moroiti, ka honoa ngā pereti talc ki ngā polymer rapa, ka hanga he whatunga e mahi ana pērā i te puna o roto. Mā tēnei taunekeneke ahurei ka taea e ngā hiri te whakahoki wawe i tō rātou āhua taketake i muri i te pēhitanga, ka whakarite kia piri tonu ahakoa i muri i ngā mano huringa.
I roto i ngā rangahau taiwhanga matatau tata nei, kua whakamahia ngā tikanga whakaahua tere-teitei hei hopu i ngā āhuatanga uaua o tēnei tukanga. E whakaatu mārama ana ēnei whakaaturanga i te nekehanga me te hurihanga o ngā pereti talc i roto i te anga rapa i te wā e rerekē ana te āhua, e āwhina ana i te whakaora tere. I tua atu, kua whakaritea e ngā rangahau whānui ngā hiri i hangaia ki ngā momo paura talc rerekē, e whakaatu ana ko te parakore teitei me ngā matūriki talc he rite te rahi ka arahi ki ngā whakapainga whakaora tere nui ake. Ina koa, ko ngā hiri i hangaia ki te paura talc tino pai, tino parakore kua whakaatu i te pikinga whakaora tere tae atu ki te 35%, ki te whakaritea ki ērā kāore he talc, he talc kounga iti rānei. He painga nui tēnei whakapainga nui i roto i te whakaora tere mō ngā tono e hiahia ana kia pono mō te wā roa, nā te mea ka āwhina i te aukati i te turuturu me te pupuri i te pono o te pūnaha hiri.
Ko te ātete ki te kakahu tētahi atu mea nui mō te mahi a ngā hiri rapa mahi-teitei, inā koa i roto i ngā taiao whakakoi pērā i ngā mīhini keri, ngā kaikawe ahumahi, me ngā taputapu hanga mahi-taumaha. I roto i ēnei āhuatanga uaua, ka pāngia tonutia ngā hiri e te waku me te haki, ka arahi pea ki te kakahu wawe me te pakaru. Ko te āhua o te pereti totoka ka whakarato i te pānga whakahinuhinu-ake, e mahi ana hei peera iti, kua whakauruhia ki roto i te anga rapa. Ina pa te hiri ki ngā mata e hono ana, ka paheke ngā pereti totoka tetahi ki tetahi, ka whakaiti i te wera o te waku me te whakaiti i te haki o te mata.
Heoi anō, kua ruku hohonu ake ngā rangahau tribological tata nei ki te tikanga whakahinuhinu-ake o te talc i roto i ngā hiri rapa. Kua whakaatuhia e ēnei rangahau he wāhi nui te matū o te mata o te talc ki te whakaiti i te piri i waenga i te hiri me ngā mata honohono, me te whakarei ake i te pānga whakahinuhinu. I roto i ngā tono o te ao tūturu, kua whakahaerehia ngā whakamātautau mara i roto i ngā mahi keri maha huri noa i te ao. Hei tauira, i roto i tētahi wāhi keri parahi nui i Amerika ki te Tonga, he roa ake te roa o ngā hiri i roto i ngā pūnaha whitiki kawe i te toharite o te 60% i ngā hiri paerewa. Ko tēnei roanga o te ora ka puta he penapena nui i roto i ngā utu tiaki, nā te mea he iti ake te whakakapinga hiri e hiahiatia ana i roto i te wā. Hei tāpiri, ko te āhua matū kore mahi o te paura talc ka ārai i te pirau mai i ngā āhuatanga taiao pēnei i te makuku, ngā matū, me te hihi UV, e whakarite ana i te mahi pumau puta noa i te roanga o te ora ratonga o te hiri. I roto i ngā whare ahumahi takutai moana e pāngia ana ngā hiri e te rehu tote me te haumākū teitei, kua mau tonu te pono o ngā hiri kua whakarerekētia te talc i ngā mea kāore i whakarerekētia, e whakaatu ana i ngā kaha tiaki o te kohuke.
He wero tonu te huinga pēhanga i roto i te hangarau hiri rapa, inā koa i ngā tono e pāngia ana ngā hiri e te pēhanga pumau mō ngā wā roa. Ko ētahi tauira o ēnei tono ko ngā gasket ruku moana hohonu, me tu atu ki te pēhanga nui o te hohonutanga o te moana, me ngā hiri rererangi teitei, e pāngia ana e ngā pēhanga rerekē i te wā e rere ana. Ka whakaitihia e te paura talc te take o te huinga pēhanga mā te tikanga takirua. Tuatahi, ka whakapakari i te hanganga hononga whakawhiti o te rapa, ka whakarei ake i tōna ātete ki te whakarerekētanga i raro i te pēhanga. Kua whakamahia e ngā rangahau pūtaiao polymer tata nei ngā tikanga matawai matatau hei tātari i ngā here matū i roto i ngā matū rapa me te paura talc, hei whakaū i te whakapakari o ngā hononga whakawhiti. Tuarua, ka tautokohia e ia ngā mekameka polymer, ka ārai i te totoro nui me te whakarerekētanga tuturu o te hanganga moroiti o te rauemi.
I ngā āhuatanga tino kino, pērā i ngā tono cryogenic ka taea e te pāmahana te heke ki te -196°C, ka nui ake te hiranga o te mahi a te paura talc. Kua whakamahia ngā whare whakamātautau motuhake hei whakatauira i ēnei taiao uaua, ā, he mea whakamiharo ngā hua. Kua mau tonu te reiti pono o te hiri i roto i ngā paipa cryogenic i te neke atu i te 98% i muri i te 10,000 hāora o te mahi tonu, ki te whakarite ki te 85% mō ngā hiri kāore i whakarerekētia. Mā te pupuri i te pumau o te hiri i raro i te ahotea roa, ka whakarite te paura talc kia mau tonu te whai huatanga o te hiri i roto i te wā. Nā tēnei mahi tino pai ka waiho ngā hiri rapa whakarei ake i te talc hei whiringa pai mō ngā tono kāore e taea te whiriwhiri i te pono me te haumaru.
I roto i ngā pūnaha pēhanga teitei, pērā i ngā rango waipēhi, ngā paipa hau māori, me ngā taputapu tango hinu me te hau, he mea tino nui te pono o te hiri. Ka taea e te pakaru o te hiri te arahi ki ngā hua kino, tae atu ki ngā turuturu, te kino o ngā taputapu, me ngā tūponotanga taiao. He mea nui te mahi a te paura talc ki te whakarite i te pono o te hiri mā te mahi hei tohatoha ahotea. Mā tōna āhua matūriki papatahi ka taea e ia te horapa ōrite i ngā kaha e pā ana ki te mata o te hiri, ka ārai i ngā kukū ahotea ā-rohe ka arahi pea ki te pakaru wawe.
Kua tino matatau ake ngā whakatauira o ngā āhuatanga wai rorohiko (CFD) hou, me te whakaaro ki ngā āhuatanga pēnei i ngā pikinga pāmahana me ngā tauira rere wai i roto i te hiri. Kua whakaatuhia e ēnei whakatauira whakarei ake te āhua o te whakatakotoranga matūriki ahurei o te talc e hono ana ki ngā whārite pēhanga, e whakapiki ana i te kaha kawenga o te hiri tae atu ki te 40%. Hei tāpiri, kua whakamahia te tātari huānga mutunga kore (FEA) hei ako i te whanonga ā-pūkaha o ngā hiri me te paura talc i raro i ngā āhuatanga kawenga rerekē. Nā ngā māramatanga whakakotahi mai i te CFD me te FEA i whakarato he māramatanga whānui ake mō te whakapai ake a te paura talc i te mahi hiri. Mā tēnei kaha kawenga whakarei ake ka taea e te hiri te tu atu i ngā pēhanga teitei ake me te kore e whakararu i tōna pono, he mea nui mō te whakahaere haumaru me te whai hua o ngā pūnaha pēhanga teitei.
Ko tētahi atu painga nui o te paura talc i roto i te hanga hiri rapa ko tōna hototahitanga ki ngā momo matū rapa. Ahakoa he monomer ethylene propylene diene (EPDM), he rapa nitrile butadiene (NBR), he rapa silicone rānei, ka taea te whakauru ngāwari i te paura talc ki roto i te hanganga hei whakatutuki i ngā āhuatanga e hiahiatia ana. Mā tēnei whānuitanga ka taea e ngā kaihanga te whakarite i te hanganga hiri rapa i runga i ngā whakaritenga whakahaere motuhake o te tono.
Hei tauira, i roto i te umanga tukatuka matū, me ātete ngā hiri i te whānuitanga o ngā matū kaha, ka taea te whakakotahi i te paura talc me te NBR hei hanga i tētahi hiri e tuku ana i te ātete matū tino pai. Kua whakaatuhia e ngā whakamātautau rumaki matū taiwhanga ka taea e ngā hiri talc-NBR te tu atu ki te pānga ki ngā waikawa kaha me ngā kawakore mō ngā wā roa me te kore e tino pakaru. I roto i te umanga rererangi, me te ātete pāmahana teitei, ka taea te whakamahi i ngā hiri rapa silicone whakarei ake i te talc hei tu atu i ngā pāmahana tino nui mai i te -60°C ki te 260°C me te kore e ngaro te whai huatanga o te hiri. Inaa, i roto i ngā wāhanga miihini jet, kua whakamātauhia ēnei hiri ki te pupuri i tā rātou mahi ahakoa ngā huringa pāmahana tere, e whakarite ana i te mahi pono o ngā miihini.
Haunga ōna āhuatanga ā-pūkaha me te matū, he maha ngā painga tukatuka o te paura talc i roto i te hanga hiri rapa. Mā tōna rahi matūriki pai me ōna āhuatanga marara pai ka whakarite kia rite te tohatoha i roto i te anga rapa, ka hua ake he kounga hua ōrite. Kua arotauhia ngā hangarau whakaranu matatau, pērā i ngā extruders takirua-whiu, kia tino whai hua ai ngā āhuatanga marara o te paura talc, kia tino whai hua ai ia wāhanga o te matū rapa i ōna āhuatanga. Ka whakapai ake hoki te paura talc i ngā āhuatanga rere o te matū rapa i te wā tukatuka, kia māmā ake ai te hanga me te hanga ki te āhua hiri e hiahiatia ana.
Ehara i te mea ka whakaiti noa i te wā whakaputa me ngā utu engari ka whakapai ake hoki i te whai huatanga whānui o te tukanga hanga. Hei tauira, i roto i ngā raina whakaputa hiri aunoa, nā te whakamahinga o te paura talc kua tere ake ngā huringa me te iti ake o ngā whakakorenga whakaputa. Hei tāpiri, mā te tāpiri o te paura talc ka taea hoki te whakaiti i te whakapaunga pūngao o ngā taputapu tukatuka, nā te mea he iti ake te kaha e hiahiatia ana hei tukatuka i te ranunga rapa e rere pai ake ana.
He pai hoki te whakamahinga o te paura talc i roto i te hanga hiri rapa. He kohuke tūturu te talc e nui ana i roto i te kirinuku o te whenua. He iti noa te pānga ki te taiao o tōna tangohanga me te tukatuka ki te whakaritea ki ngā rauemi hangai. Kei te piki haere te whakamahi a ngā kamupene keri i ngā tikanga tango pumau, pērā i te whakatō ngahere me te whakaora whenua i muri i ngā mahi keri, ā, ka whakaitihia ake te tapuwae taiao o te hanga talc. Heoi anō, he roa ake te ora o ngā hiri rapa kua whakareihia te talc, ka whakaitihia te auau o te whakakapinga hiri me te whakaiti i te whakaputanga para.
I roto i te tirohanga ōhanga porowhita, ka taea te hangarua pai ake i ngā hiri rapa e ahu mai ana i te talc i te mutunga o te oranga nā te mea he pumau ō rātou āhuatanga. Kei te haere tonu hoki te rangahau hei whakawhanake i ngā tikanga hangarua auaha ka taea te tango me te whakamahi anō i te paura talc mai i ngā hiri kua whakamahia, hei whakarei ake i te pumau o te tukanga katoa. Nā tēnei ka waiho ngā hiri rapa e ahu mai ana i te talc hei whiringa pumau mō ngā tono ahumahi, e hangai ana ki te arotahi o te ao ki te tiaki taiao me te tiaki rauemi.
Hei whakamutunga, he mea nui te paura talc i roto i te hanga hiri rapa mahi-teitei. Ko ōna āhuatanga ahurei, tae atu ki te whakaora tere ake, te ātete kakahu, te ātete pēhanga, te tohatoha ahotea, me te hototahi ki ngā momo matū rapa, ka waiho hei taonga nui i roto i te umanga hiri rapa. Mā te whakamahi i ngā painga o te paura talc, ka taea e ngā kaihanga te whakaputa hiri rapa e tutuki ana i ngā whakaritenga pakari o ngā tono ahumahi hou, e whakarite ana i te pono, te roa, me te haumaru. I te mea kei te tipu haere tonu te hiahia mō ngā hiri rapa mahi-teitei, e akiakihia ana e te whānui o ngā ahumahi pēnei i te pūngao whakahou, te rererangi, me te hinu me te hau, ka nui ake te hiranga o te mahi a te paura talc i roto i te ahumahi a meake nei. E tumanakohia ana mā ngā mahi rangahau me te whanaketanga tonu ka iriti ake i te kaha o te paura talc, ka arahi ki te hanganga o ngā otinga hiri rapa matatau ake, whai hua ake.
