Ehara i te mea ko ngā āhuatanga rapa o te polyurethane honohono-whiti anake te mea kei roto i te polyurethane kirihou wera (TPU), pērā i te kaha teitei, te ātete ki te kakahu, engari kei roto anō hoki ngā āhuatanga kirihou wera o ngā rauemi pūmua raina, kia taea ai te whakawhānui ake i tana tono ki te mara kirihou. Ina koa i ngā tekau tau tata nei, kua riro te TPU hei tētahi o ngā rauemi pūmua tino tere te whanaketanga.
He tino pai ngā āhuatanga o te TPU ki te kukū teitei, ki te kukū teitei, ki te pakari, me te ātete ki te koroheketanga, ā, he rauemi pakari, he pai hoki mō te taiao. He kaha teitei, he pakari pai, he ātete ki te kakahu, he ātete ki te makariri, he ātete ki te hinu, he ātete ki te wai, he ātete ki te koroheketanga, me te ātete ki te huarere, kāore e taea te whakarite ki ētahi atu rauemi kirihou. I taua wā anō, he nui ōna āhuatanga uruhanga wai me te makuku, he ātete ki te hau, he ātete ki te makariri, he āhuatanga patu huakita, he ātete ki te pokepokea ai, me te maha o ngā mahi pai, pērā i te tiaki i te mahana, te ātete ki te UV, me te tuku pūngao.
He whānuitia ngā pāmahana whakahaere o te TPU. Ka taea te whakamahi i te nuinga o ngā hua mō te wā roa i waenga i te -40-80 ℃, ā, ka taea e te pāmahana whakahaere poto te eke ki te 120 ℃. Ko ngā wāhanga ngohengohe i roto i te hanganga wāhanga o ngā macromolecules TPU te whakatau i tā rātou mahi pāmahana iti. He iti ake te mahi pāmahana iti me te ngāwari o te momo TPU polyester i te momo TPU polyether. Ko te mahi pāmahana iti o te TPU ka whakatauhia e te pāmahana whakawhiti karāhe tuatahi o te wāhanga ngohengohe me te pāmahana whakangawari o te wāhanga ngohengohe. Ko te whānuitanga whakawhiti karāhe ka whakawhirinaki ki te ihirangi o te wāhanga mārō me te nui o te wehenga ā-wāhanga i waenga i ngā wāhanga ngohengohe me ngā wāhanga mārō. I te pikinga ake o te ihirangi o ngā wāhanga mārō me te hekenga o te nui o te wehenga ā-wāhanga, ka whānui ake hoki te whānuitanga whakawhiti karāhe o ngā wāhanga ngohengohe, ka hua ake he mahi pāmahana iti ngoikore. Mena ka whakamahia te polyether he hototahi ngoikore ki te wāhanga mārō hei wāhanga ngohengohe, ka taea te whakapai ake i te ngāwari pāmahana iti o te TPU. Ina piki ake te taumaha ngota ngota whanaunga o te wāhanga ngohengohe, ina whakamahanatia rānei te TPU, ka piki ake anō hoki te taumata o te kore hototahi i waenga i ngā wāhanga ngohengohe me ngā wāhanga pakeke. I ngā pāmahana teitei, ko te nuinga o te wā ka mau tonu tana mahi e ngā wāhanga mekameka pakeke, ā, ki te teitei ake te pakeke o te hua, ka teitei ake te pāmahana ratonga. Hei tāpiri, ko te mahi pāmahana teitei ehara i te mea e pā ana ki te nui o te whakaroa mekameka anake, engari ka pāngia anō hoki e te momo whakaroa mekameka. Hei tauira, ko te pāmahana whakamahinga o te TPU i whiwhi mā te whakamahi i te (hydroxyethoxy) benzene hei whakaroa mekameka he teitei ake i te TPU i whiwhi mā te whakamahi i te butanediol, i te hexanediol rānei hei whakaroa mekameka. Ka pā anō hoki te momo diisocyanate ki te mahi pāmahana teitei o te TPU, ā, he rerekē ngā ira rewa o ngā diisocyanate me ngā whakaroa mekameka rerekē hei wāhanga pakeke.
I tēnei wā, kei te whānui haere te whānuitanga o te whakamahinga o te kiriata TPU, ā, kei te whānui haere mai i ngā hū tuku iho, ngā kakahu, ngā kākahu ki ngā mahi rererangi, ngā mahi hōia, ngā mahi hikohiko me ētahi atu mara. I taua wā anō, he rauemi ahumahi hou te kiriata TPU ka taea te whakarerekē tonu. Ka taea te whakawhānui ake i tana mara whakamahinga mā te whakarerekētanga rauemi mata, te whakarerekētanga tauira rauemi, te arotautanga tukanga whakaputa me ētahi atu huarahi, kia nui ake ai te wāhi e whakamahia ai te kiriata TPU. I te heke mai, ka whakapai ake te taumata hangarau ahumahi, ka haere tonu te whakamahinga o te TPU.
He aha ngā whakamahinga o ngā rauemi TPU i roto i tā mātou kamupene i tēnei wā?
I te mea e piki haere ana te hiranga o ngā motuka i roto i ō tātou oranga, kei te piki haere hoki te hiahia mō te tiaki waka i waenga i ngā kaipupuri motuka. Ko te kiriata tiaki peita rauemi TPU te otinga tino pai hei whakatutuki i tēnei hiahia.
Ko tētahi o ngā āhuatanga o te kiriata tiaki peita TPU ko tōna ātete pai ki te haehae, ka taea te ātete i te pānga o ngā mea koi pērā i te kirikiri me te onepu ki te rori, ā, ka tiakina te tinana mai i ngā karawarawa me ngā pakaru. Kāore he take e manukanuka ai mō ngā kino ka puta i te wā e taraiwa ana, ā, ka taea e koe te aro nui atu ki te rori me te wheako taraiwa i te wā e taraiwa ana.
Hei tāpiritanga, he tino ātete te kiriata tiaki peita TPU ki te huarere. Ahakoa he hihi kaha o te rā, he waikura ua waikawa, he poke rānei, ka taea e tēnei kiriata tiaki peita te tiaki pono i te peita o te motuka mai i te kino, kia kanapa tonu ai te āhua o te motuka.
Ko te mea whakamiharo ake ko te mahi whakaora-ā-ia-anō a tā mātou kiriata tiaki peita rauemi TPU. I muri i te rakuraku paku, ka taea e tōna rauemi te whakatika i a ia anō i roto i te taiao mahana e tika ana, ka taea ai e te tinana te ora anō pērā i mua, me te whakaroa i te roa o te ora o te kiriata tiaki peita.
Ehara i te mea ko te kiriata tiaki peita rauemi TPU anake te mea e whakarato ana i te tiakitanga whānui, engari e aro nui ana hoki ki te tiaki taiao. Kāore te kiriata tiaki peita i hangaia mai i ngā rauemi e pai ana ki te taiao e whakararu i te taiao, he mea e hangai ana ki te whai i te haereere matomato a te hunga hou.
Ko te whakarewatanga o te kiriata tiaki peita rauemi TPU he tohu i tētahi hurihanga i roto i te ao tiaki motuka, e whakarato ana i ngā otinga tiaki matatau ake, pono ake hoki mō ngā kaipupuri motuka. Awhitia te tiaki matomato, tukua ō tātou motuka me te whenua kia manawa tahi.
Matawaihia te waehere QR i runga ake nei hei whakapā mai ki a mātou.
Wā tuku: Akuhata-03-2023
