He whakatau nui te whiriwhiri i te rauemi arai ngongo ahi tika mā ngā miihini haumaru ahi me ngā āpiha hokohoko ahumahi. Ka pā tika te rauemi arai ki te roa o te ngongo, te taumaha, te pai o te rere o te wai, me te ātete ki ngā taumahatanga taiao. I tēnei wā, ko te Polyvinyl Chloride (PVC) me te Polyurethane (PU) ngā arai kirihou wera e rua e whakamahia whānuitia ana i roto i ngā mahi tinei ahi ngaio me ngā mahi tukunga ahumahi. Ahakoa e mahi ana ngā rauemi e rua hei ārai i te turuturu me te whakahaere i te kawe wai, he rerekē rawa ō rāua āhuatanga ā-tinana i raro i ngā āhuatanga tino kino, ka pā ki te utu whānui o te huringa ora me te pai o te whakahaere o ngā pūnaha tiaki ahi.

Te Hanganga Rauemi me ngā Āhuatanga Ā-tinana o ngā Ngongo Ahi PVC

Ko te Polyvinyl Chloride (PVC) he pūhui kirihou hangai e whakamahia whānuitia ana i roto i te hangangongo ahi paerewangā hua nā te mea he iti te utu me te pumau o ngā matū. He matotoru ake ngā arai PVC i ngā arai PU hei whakatutuki i ngā whakatauranga pēhanga pahūtanga rite. Ka whai wāhi tēnei matotoru ki te taumaha whānui, ka roa ake pea te wā whakatinanatanga i te wā urupare ohorere. Heoi, he tino ātete te PVC ki te whānuitanga o ngā matū me ngā hinu, ā, he kōwhiringa pai mō te tukunga ahumahi taketake me te whakamakuku ahuwhenua i te wā kāore te tino ngāwari i ngā pāmahana iti te whakaritenga matua.

Ngā Painga Hangarau o ngā Ngongo Ahi Raina Polyurethane (PU)

He elastomer mahi-teitei te Polyurethane (PU) e tuku ana i te ōwehenga kaha-ki-taumaha pai rawa atu ki te whakataurite ki ngā polymer tuku iho. I roto i te horopaki o teNgongo ahi kua whakakikoruatia ki te PU, ka taea te hanga i te arai kia angiangi ake, me te pupuri tonu i te kaha kume me te ātete ki te pakū. Ngā raraunga mai i teTe Rōpū Tiaki Ahi ā-Motu (NFPA)e kī ana ko te whakaiti i te taumaha o ngā taputapu ahi he hononga tika ki te whakaiti i te ngenge o ngā kaipatu ahi me te whakapai ake i ngā wā urupare. He tino ngāwari tonu ngā arai PU ahakoa i te pāmahana iti iho i te -50°C, he paepae ka pakarukaru te PVC, ka ngawari hoki te ngatata.

Te Whakataurite i te Pai o te Rere Wai me te Ngaronga o te Waku

He mea nui te ngaronga o te waku i roto i te mahi waipēhi, nā te mea ka whakatau i te pēhanga e wātea ana i te pūwero. Kua hangaia ngā arai polyurethane kia tino maeneene, ka iti ake te tauwehenga taratara a Manning ki te whakataurite ki te PVC. Mā te waku o roto iti ka taea te whakaputa i ngā reiti rere teitei ake (GPM) i ngā tawhiti roa me te kore e hiahiatia he mana papu tāpiri. I roto i te tinei ahi o ngā whare teitei, mā te whakamahi i tengongo ahi pēhanga teiteiMā te arai PU ka whakaitihia te ngaronga o te waku, ka tiakina te pūngao nekeneke o te awa wai kia pai ai te uru o te mura.

Ngā Whakatauranga o te Pakaritanga Taiao me te Ātete ki te Waro

Mā te uhi o waho o te ngongo ahi ka mau te hanganga pakari, engari me tu tonu te arai o roto ki te whānui me te whakawhāiti. He pai ake te ātete o ngā arai PU ki te ozone me te pumau o te UV, e ārai ana i te pirau o te rauemi ina pāngia e te rā, e ngā poke ahumahi rānei mō ngā tau maha. E ai ki ngā tatauranga ahumahi mai iTe Rangahau Mākete o te Ao (MRFR), kei te neke haere te mākete ngongo ahi o te ao ki te TPU (Thermoplastic Polyurethane) nā te mea he 3 ki te 5 ngā wā teitei ake te ātete ki te pakū i te PVC paerewa. Nā tēnei pakari ka waiho te PU hei whiringa pai mōngongo ahi takiruangā hanganga e whakamahia ana i ngā taiao taratara pērā i te maina me te ngahere.

Te Whakataurite i ngā Ngongo Ahi PVC me ngā Ngongo Ahi PU mō te Whakamahinga Ahumahi

Kei te ripanga e whai ake nei ngā inenga mahi hangarau o ngā arai PVC me PU hei āwhina i te tukanga whiriwhiri mō ngā tono ahumahi me ngā tono ā-tāone:

Te Tukanga Whakahaere mō te Tirotiro i te Pono o ngā Ngongo Ahi

Hei whakarite kia tutukihia ngā paerewa haumaru pēnei i te NFPA 1962, me whai ngā kaiwhakahaere whare i tētahi tikanga tirotiro hanganga mō ngā mea katoa.ngā taputapu tinei ahiHe mea nui te pupuri i te āhua o te arai hei ārai i te pakaru nui i te wā o te ahi.
1.

Tirotiro Ā-WahoTirohia te koti o waho mō ngā pakaru, ngā wera, ngā paru matū rānei e tohu ana i te kino o te arai o roto.

2.

Tirotiro i te Arai ā-RotoTirohia mā roto i te ngongo ki tētahi pūtake mārama hei kimi i tētahi pakaru, i tētahi paru rānei i roto i tehononga ngongo ahirohe

3.

Whakamātautau Pēhanga WairewaWhakamātauria te pēhanga o te ngongo ki tōna pēhanga whakamātautau kua tohua hei tirotiro mēnā he turuturu, he "werawera" rānei mā roto i te koti.

4.

Te Whakamaroke me te RokirokiMe whakarite kia mimiti rawa te wai o te ngongo, kia maroke hoki i mua i te hurihuri hei ārai i te tipu o te harore, he mea tino nui tēnei mō ngā rauemi PVC.

Te Tātaritanga Utu-Painga mō te Hokonga Haumaru Ahi mō te Wā Roa

Ahakoa he iti ake te utu tīmatanga mō te hoko i tētahi ngongo PVC, he pai ake te utu katoa mō te Polyurethane i te Tapeke Utu o te Mana Pupuri (TCO). Mā te roa o te ora mahi o te PU—e rua te roa o te ora o te PVC—ka whakaiti i te auau o ngā huringa whakakapinga. Hei tāpiri, mā te whakaiti i te taumaha o ngā ngongo PU ka taea te whakamahi i ngā ngongo iti ake, kiato ake.ngā rīra ngongo ahi, e penapena ana i te wāhi nui i roto i ngā mahere papa arumoni. Mō ngā whakahaere e aro nui ana ki te whakatinanatanga tere me te pono mō te wā roa, ko te haumi ki te arai PU kounga teitei ka nui ake te hokinga mai mā te whakarei ake i ngā tawhā haumaru me te whakaiti i te mahi tiaki.

Ngā Pātai Auau

He aha ngā rerekētanga i waenganui i ngā arai PVC me te polyurethane e pā ana ki te hanganga matū me te pānga ki te taiao?

He kirihou pakari te PVC (Polyvinyl Chloride) i hangaia kia ngāwari mā te tāpiri i ngā phthalates, ka taea te mimiti i roto i te wā, ka arahi ki te whakapakeketanga o te rauemi me ngā āwangawanga taiao. He rerekē, ko te Polyurethane (PU) he elastomer thermoplastic kāore e hiahiatia he plasticizers kia noho ngāwari. Ko te PU e kiia ana he pai ake te taiao me te pumau, nā te mea kāore e tukuna he paowa paitini i te wā o te whakahekenga pāmahana teitei ki te taumata rite ki te PVC. Mai i te tirohanga hangarau, ka taea e te hanganga ngota o te PU te pupuri i te ngāwari puta noa i te awhe pāmahana whānui atu i te PVC.

He aha te tukanga taahiraa-i-te-taahiraa mō te whakakapi i te hononga ngongo ahi kua pakaru?

Tuatahi, me tapahi ma te wāhanga pakaru o te ngongo mā te whakamahi i tētahi taputapu tapahi ngongo taumaha, kia tika ai te tapahi ki te roa o te ngongo. Tuarua, ko te tapahi e tika anamowhiti whakawhanui ngongoMe whiriwhiri te rawhi i runga i te diameter o roto o te ngongo. Tuatoru, ka whakauruhia te kakau hononga hou ki roto i te ngongo kia mau rawa ki te pakihiwi. Tuawhā, ka whakamahia he taputapu whakawhānui hei pēhi i te mowhiti parahi o roto ki te arai, ka hanga he hiri pēhanga teitei. Hei whakamutunga, me whakamātautau te huihuinga i te 1.5 ngā wā o te pēhanga mahi hei manatoko i te haumaru o te hononga i mua i te whakahokinga ki te mahi.

Me pēhea te whiriwhiri i te arai tika mō te ngongo ahi e whakamahia ana i ngā āhuarangi i raro i te zero?

Mō ngā taiao e heke tonu ana te pāmahana ki raro iho i te hukapapa, ko te Polyurethane (PU) anake te kōwhiringa pai. Ka pāngia ngā arai PVC e te "whakawhitinga karāhe" i ngā pāmahana iti, ka pakari, ka pakarukaru; ko te ngana ki te wetewete i te ngongo PVC tio ka puta he maha ngā wā ka pakaru te arai, ka wehe rānei i te koti kakahu. Ka noho ngāwari, ka mahi tonu ngā arai PU tae noa ki te -50°C (-58°F). I te wā e tohua ana he ngongo mō ngā āhuarangi makariri, me manatoko e ngā kaihoko te tiwhikete "Whakamātautau Piko Makariri" e ai ki ngā paerewa UL, EN rānei kia mau tonu ai te mahi a te rauemi i ngā āhuatanga o te Arctic, o te teitei rānei.

He aha ngā whakaaro hē e pā ana ki te taumaha me te pēhanga o ngā ngongo ahi?

Ko tētahi whakaaro hē noa ko te kaha ake o te ngongo taumaha, matotoru ake, ā, ka taea hoki te whakahaere i ngā pēhanga teitei ake. I roto i te pūtaiao rauemi hou, kāore te matotoru e rite ki te kaha. Ka taea e ngā koti polyester pakari-teitei me ngā arai PU angiangi, teitei-kukume te whakatutuki i te pēhanga pakū neke atu i te 900 PSI (62 Bar) me te taumaha 30% iti iho i te ngongo PVC paerewa. Ko tētahi atu whakaaro hē ko te rite tonu o ngā ngongo "kirihou" katoa; i roto i te ao tūturu, ko te kiato ngota o te polymer me te tukanga here i waenga i te arai me te koti e whakatau ana i te kaha o te ngongo ki te ātete i te "ngote" i raro i te pēhanga teitei.

He aha ngā whakatakotoranga raraunga paerewa mō tētahi ngongo ahi kua whakakikoruatia ki te PU kounga ngaio?

Ko te pēhanga mahi o te ngongo PU ngaio he 250-300 PSI te nuinga, ā, ko te pēhanga pakū he 750-900 PSI te iti rawa. Ko te matotoru o te arai he mea pupuri tonu i waenga i te 0.2mm me te 0.4mm hei taurite i te taumaha me te pakari. E ai ki ngā raraunga mai iNgā Paerewa o Peretānia (BS 6391), Ko ngā ngongo Momo 3 (kei roto ko ngā paninga PU, ko ngā arai rānei) me whakaatu i te taumaha mōrahi o te 250g ki te 350g ia mita mō te diameter 45mm. Hei tāpiri, ko te kaha piri i waenga i te arai me te kakahu me neke atu i te 10 lbs/inihi hei ārai i te wehewehe i te wā e tere ana te piki me te heke o te pēhanga.