1. Tirohanga Whānui o te TPU
Polyurethane kirihou wera (TPU)He elastomer poraka raina mahi-teitei te TPU e whakauru ana i ngā āhuatanga pai o te rapa me te kirihou hangarau. He tino pai te ngāwari, te kaha miihini, te ātete kakahu, me te kaha tukatuka thermoplastic. He rerekē ki te rapa whakawhiti-hono tuku iho, he hanganga whakawhiti-hononga ā-tinana hurihuri a TPU i hangaia e ngā hononga hauwai, e āhei ai te whakamahana, te rewa me te hanga me te kore e tino heke te mahi. Nā tēnei āhuatanga ahurei ka waiho te TPU hei tetahi o ngā rauemi thermoplastic elastomer (TPE) tino maha ngā whakamahinga e whakamahia whānuitia ana i roto i te hanga ahumahi, ngā taonga kaihoko, ngā motuka, te hauora me ētahi atu mara.
Ko te mahi a ngā hua TPU kua oti te hanga ka whakatauhia e tōna hanganga rauemi mata, te ōwehenga ōwehenga me te tukanga whakapūhui. Ko ngā rauemi TPU arumoni katoa ka whakapūhuitia mai i ngā rauemi mata matua e toru: ngā polyol mekameka roa, ngā diisocyanate, me ngā whakaroa mekameka mekameka poto.
2. Ngā Wāhanga Rauemi Matua o te TPU
He poraka kōpiripiri wāhanga te TPU, he mea hanga mai i ngā wāhanga ngohengohe me ngā wāhanga mārō e taupatupatu ana. Mā ngā wāhanga ngohengohe ka taea e te TPU te ngāwari, te pakari me te ātete ki te pāmahana iti, ko ngā wāhanga mārō ia ka taea te whakapūmau, te kaha kume, te ātete ki te kakahu me te pumau o te wera. Ko ngā rauemi mata matua e toru e hangai ana ki te hanganga o ēnei hanganga wāhanga e rua.
2.1 Ngā Polyol mekameka roa (Rauemi Mata o te Wāhanga Ngāwari)
Ko ngā polyol mekameka-roa (ngā diol mekameka-roa) ngā rauemi matua mō te hanga i ngā wāhanga ngohengohe o te TPU, me te taumaha ngota i waenga i te 1000 ki te 3000 g/mol. Koinei te pūtake matua o te ngāwari me te ngāwari o te TPU. E ai ki te hanganga matū, ka wehea ngā polyol ki ngā wāhanga e rua, e whakatau ana i te whakarōpūtanga taketake me ngā rerekētanga mahi matua o te TPU.
PolyesterPōroiraI hangaia mai i te tauhohenga polycondensation o ngā waikawa dicarboxylic me ngā diols. He tino kaha te TPU i hangaia mai i ngā polyols polyester, he ātete ki te pakū, he ātete ki te hinu me te ātete ki te koroheketanga. He kaha te kaha kume me te ātete ki te haehae, ā, he pai mō te hanga i ngā wāhanga kakahu roa, ngā hiri ahumahi, ngā rauemi hu me ngā hua piri. Heoi, he iti te ātete o te TPU polyester ki te waikura me te pakari i te pāmahana iti, ā, he ngāwari ki te waikura me te pirau i roto i ngā taiao makuku roa.
PolyetherPōroira: He mea hanga mai i te whakapūhuitanga mowhiti-tuwhera o ngā monomer ether. He tino pai te ātete o te TPU polyether ki te waikura, te ngāwari ki te pāmahana iti, te ātete ki te wai me te ātete ki ngā moroiti. Ka noho ngāwari, ka pumau hoki i roto i ngā taiao pāmahana tino iti, ā, kāore e ngāwari ki te pirau i te makuku me te huakita. He whānuitia te whakamahinga i roto i ngā kiriata ārai wai, ngā taputapu raro wai, ngā uhi waea me te taura, me ngā wāhanga ātete ki te pāmahana iti. Ko ōna ngoikoretanga kei roto i te iti ake o te ātete kakahu me te ātete hinu ki te TPU polyester.
2.2 Ngā Diisocyanate (Rauemi Mata o te Matua Wāhanga Mārō)
Ko ngā diisocyanate he monomer tauhohe kei roto ngā rōpū mahi NCO, e tauhohe ana ki ngā rōpū hydroxyl o ngā polyol me ngā whakaroa mekameka hei hanga i ngā hanganga wāhanga mārō pakari, ā, koinei te mea nui ki te whakatau i te pakeke, te pakari me te pumau o te TPU. Ko te diisocyanate e whakamahia whānuitia ana i roto i te hanga TPU ahumahi ko te MDI (Methylene Diphenyl Diisocyanate), he āhuatanga matū pumau, he kaha tauhohenga teitei me te iti o te piki me te heke, ā, he pai mō te nuinga o ngā hua TPU whānui me te mahi teitei.
Hei tāpiritanga, ka whakamahia ngā diisocyanate motuhake pērā i te HDI me te IPDI hei hanga i te TPU aliphatic. Kāore he hanganga mowhiti benzene o taua TPU i roto i te mekameka ngota, e whakaatu ana i te ātete tino pai ki te kōwhai, te pumau o te māramatanga me te ātete ki te huarere, ā, he mea motuhake te whakamahi mō ngā hua o waho, ngā wāhanga whakapaipai mārama, ngā wāhanga o waho o te motuka me ngā hua tae kounga teitei.
2.3 Ngā Whakaroa Mekameka Poto (Rauemi Mata Āwhina Wāhanga Mārō)
Ko ngā whakaroa mekameka he diol mekameka-poto me te taumaha ngota iti (ko te nuinga ko te 1,4-Butanediol, BDO), e tauhohe ana ki ngā diisocyanate nui hei hanga i ngā rohe wāhanga mārō matotoru. He mahi nui tā rātou ki te whakarerekē i te pakeke, te modulus me ngā āhuatanga hangarau o te TPU. Mā te whakarerekē i te ōwehenga tāpiri o ngā whakaroa mekameka, ka taea e ngā kaihanga te whakahaere tika i te awhe pakeke o te TPU mai i te 60 Shore A (āhua rapa ngohengohe) ki te 85 Shore D (āhua kirihou mārō).
Ko te hanganga wāhanga mārō i hangaia e ngā whakaroa mekameka me ngā diisocyanate ka hanga i ngā pūwāhi hononga-tinana mā te hononga hauwai i waenga i ngā mekameka ngota, e whakarite ana he rite te ngāwari o te TPU ki te rapa i te pāmahana rūma, ā, ka taea te rewa me te rere i te pāmahana teitei mō te hanga werohanga, te whakaputa, te hanga pupuhi me ētahi atu tukatuka kirihou wera.
3. Te Whakarōpūtanga o te TPU i runga i te Tātai Rauemi Mata
E ai ki te momo rauemi mata polyol, ka wehea ngā rauemi mata TPU ahumahi ki ngā raupapa e toru, e kapi ana i te nuinga o ngā horopaki tono:
TPU PoihātereKo ngā rauemi mata o te polyester polyol te mea matua, he kaha teitei, he ātete ki te kakahu me te ātete matū, he pai mō ngā wāhanga ātete-kakahu ahumahi, ngā kapu hū, ngā kiriata hiako me ngā rauemi here.
TPU Polyether: I ahu mai i ngā rauemi mata o te polyether polyol, he ātete pai ki te waikura me te mahi pāmahana iti, e whakamahia whānuitia ana i roto i ngā kiriata manawa ā-wai, ngā taputapu hauora, ngā rauemi taura me ngā wāhanga taputapu ātete-makariri.
TPU Whakarerekē MotuhakeI runga i ngā rauemi mata matua e toru, tāpirihia ngā tāpiringa mahi (ngā mea ārai mura, ngā mea ārai-ultraviolet, ngā mea whakapakari tinana, me ētahi atu) ka whakamahi rānei i ngā tauira polyol hiato hei whakaputa i ngā rauemi TPU motuhake e ārai mura ana, e ātete ana ki te huarere, e mārama ana, e ārai ana i te huakita me ētahi atu rauemi TPU motuhake mō ngā āhuatanga whakaritenga teitei.
4. Ngā Āhuatanga Matua e Whakatauhia ana e ngā Rauemi Mata
Ko te ōwehenga ōrite me te momo rauemi mata TPU ka whakatau tika i te mahi whakamutunga o te rauemi, e whakaatu ana i ngā āhuatanga whakarerekētanga mārama:
- Te Whakaritenga o te PakariMā te whakarerekē i te ōwehenga o ngā wāhanga mārō (diisocyanate + mekameka toronga) ka taea te whakatutuki i te huringa mārō tonu o te TPU, e kapi ana i te elastomer ngohengohe ki te kirihou hangarau mārō.
- Ngā Āhuatanga MīhiniHe kaha te kume me te ātete ki te kakahu nā ngā rauemi mata o te polyester; he kaha ake te ātete ki te pakari me te ngenge nā ngā rauemi mata o te polyether.
- Te Urutau ki te TaiaoKa ātete te TPU Polyether ki te waikura me te pāmahana iti; ka whakapai ake ngā rauemi mata o te diisocyanate aliphatic i te ātete ki te huarere me te mahi ārai-kōwhai.
- Te Mahi TukatukaMā te tohatoha taumaha ngota rauemi mata e tika ana ka pai te rere o te wai rewa, ka taea ai e te TPU te urutau ki ngā hangarau tukatuka kirihou wera me te tautoko i te tukatuka anō i hangarua.
5. Ngā Āhuatanga o te Whakaputa me te Tukatuka
Ka hangaia ngā rauemi mata TPU mā te whakapūhuitanga papatipu, mā te whakapūhuitanga otinga rānei. Whai muri i te whakataurite tika o ngā polyol, ngā diisocyanate me ngā whakaroa mekameka, ka uru ngā rauemi ki te whakapūhuitanga pāmahana teitei, te tauhohenga whakaroa mekameka, te whakamatao me te whakapūhui hei hanga rauemi mata pereti TPU ōrite. Kāore he mea whakapūhui kirihou i roto i te tukanga whakaputa katoa, ā, he kore paitini ngā rauemi mata kua oti, he hoa hoki ki te taiao, e tutuki ana i ngā paerewa tiaki taiao o te ao pēnei i te RoHS me te REACH.
Hei rauemi kirihou wera, ka taea te tukatuka tika i ngā pire rauemi mata TPU mā roto i ngā taputapu kirihou tuku iho. Ka taea te hangarua, te whakarewa me te whakamahi anō i ngā rauemi me ngā para e toe ana i te wā tukatuka, me te iti o te ngaronga rauemi me te tere whakamahinga rauemi teitei, e hangai ana ki te ia whanaketanga o te hanga matomato.
6. Ngā Whakamahinga Matua o ngā Rauemi Mata TPU
I te whai huatanga mai i te mahi whakarerekētanga o ngā tātai rauemi mata, e whakamahia whānuitia ana ngā rauemi mata TPU i roto i ngā ahumahi maha:
- Ahumahi MotukaNgā wāhanga o roto o te motuka, ngā wāhanga mimiti-ru, ngā ngongo ā-wai, ngā hipoki waea me ngā taura, e whakawhirinaki ana ki te pakari teitei me te ātete ki te huarere o ngā rauemi mata TPU kua whakarerekētia.
- Ngā Taonga Kaihoko me ngā HuNgā kapu hū hākinakina, ngā pouaka tiaki waea, ngā taputapu tueke, ngā whitiki rapa, e whakamahi ana i te tino rapa me te ātete ki te kakahu o te polyester TPU.
- Ngā Mea Hauora me Ngā Mea e Hiahiatia ana i ia RāNgā katitere hauora, ngā taputapu tiaki, ngā taputapu kai-kai, te tango i ngā rauemi mata TPU polyether haumaru-kai me te ātete-wai.
- Te Hanga AhumahiNgā gasket ātete-mau, ngā whitiki kawe, ngā ngongo waipēhi, ngā kiriata piri, e whakamahi katoa ana i te kaha teitei me te pumau matū o ngā rauemi mata TPU.
- Pūngao Hou me te Ahumahi HikoNgā kiriata tiaki pākahiko, ngā taputapu papa ara iahiko ngāwari, ngā wāhanga ārai-mutunga, e whakamahi ana i ngā rauemi mata TPU ārai-mutunga kua whakarerekētia me te ārai-teitei.
7. Te Auahatanga Whakawhanake o ngā Rauemi Mata o te TPU
I te whakapai ake i te hanga ahumahi me te whakapai ake i ngā whakaritenga tiaki taiao, kei te whanake haere ngā rauemi mata TPU ki te mahi teitei, te tiaki taiao me te whakaritenga. E whakapau kaha ana te umanga ki te rangahau me te whakawhanake i ngā rauemi mata polyol koiora hei whakakapi i ngā rauemi mata hinu tuku iho, me te whakaiti i ngā tukunga waro. I taua wā anō, ka whakahoutia tonutia ngā rauemi mata TPU motuhake he ātete huarere teitei, he ātete mura teitei, he mārama teitei me te ātete pāmahana tino iti kia tutuki ai ngā whakaritenga mahi pakari o te pūngao hou, te rererangi, te hauora teitei me ētahi atu mara hou. Hei tāpiri, kua noho ngā rauemi mata TPU whakarerekē ka taea te hangarua me te pirau koiora hei huarahi rangahau matua, e whakatairanga ana i te whanaketanga pumau o te umanga TPU.
Wā tuku: Pipiri-15-2026