Kirihou Polyurethane (PU)
* Ko te Polyurethane (PU) te whakarāpopototanga o te polyurethane, te polyisocyanate me te polyhydroxy polymer polymerization, kei roto i te mekameka matua o ngā polymer kei roto he maha ngā wāhanga mekameka urethane auau (-NHCOO-) o ngā pūhui polymer.
* Ngā hua kirihou PU kua whakaritea
Ko te polyurethane, e mōhiotia ana ko te polyurethane me te polyurethane, he akomanga macromolecules kei roto ngā waeine āhuatanga urethane i roto i te mekameka matua. He rite te ngāwari o tēnei momo rauemi polymer ki te rapa, he kaha hoki, ā, he pai rawa te mahi tukatuka o te kirihou, ā, he nui te uara tono i roto i ngā mara matua e whitu o te kirihou, te rapa, te pahuka, te muka, te paninga, te piri me ngā polymer mahi. I roto i te ahumahi, he whānuitia te whakamahinga i roto i ngā potae tere-iti, ngā gaskets, ngā whāriki motuka me ētahi atu mara. I roto i te oranga o ia rā, ka whakamahia te polyurethane ki te hanga i ngā momo pahuka me te hautai kirihou.
He aha ngā mea ka taea te hanga mai i te kirihou PU?
Ko ngā elastomers polyurethane he momo rauemi he pai ngā āhuatanga rapa me te kirihou, he pai hoki te kaha kume, te kaha haehae, te ātete pānga, te ātete ki te pakū, te ātete ki te huarere, te ātete ki te waikura, te ātete ki te hinu me ētahi atu painga.
E whakamahia whānuitia ana hei rauemi hanganga (pēnei i ngā ngongo, ngā hiri, ngā whitiki, ngā roera, ngā taputapu, ngā paipa, me ētahi atu), ngā ārai, ngā kapu hū me ngā potae totoka. Hei tauira, hei pereti tātari keri, he iti ake te haruru, he nui te uruhanga me te ātete ki te kakahu i te pereti tātari whakarewa tuku iho. Hei tāpiri, he tino pai te hototahitanga o te polyurethane, hei rauemi hauora, ka taea te whakamahi i roto i ngā taputapu whakatere, ngā oko toto horihori, ngā wheua horihori, me ētahi atu.
Ko ētahi tono mō te Polyurethane (PU) e whai ake nei:
- Te kawe waka
- Hanganga
- Mīhini
- Ngā taputapu hiko
- Taonga whare
- Te Tukatuka Kai
- Kakahu me ngā kākahu
- Hiako hangai
- Te tānga
- Ahumahi matū hinu
- Ngā Hākinakina
- Hauora
Ngā Āhuatanga o te Polyurethane (PU)
* E rua ngā momo o te pahuka polyurethane: te pahuka mārō me te pahuka ngāwari, he tino ngāwari, he roa, he kaha pēhi me te ngāwari, me te pumau matū pai hoki. Hei tāpiri, he tino pai te tukatuka, te piri, te whakamarumaru me ētahi atu āhuatanga o te pahuka polyurethane, nā te mahi pai o te rauemi whakaruruhau.
Nā te hanganga o te elastomer polyurethane, he ngohengohe, he mārō hoki ngā wāhanga mekameka e rua, nō reira ka taea te hanga i te mekameka ngota hei hoatu i te rauemi he kaha teitei, he pakari pai, he ātete ki te kakahu, he ātete ki te hinu me ētahi atu āhuatanga pai, e mōhiotia ana ko te polyurethane "rapa ātete ki te kakahu" i te wā kotahi me te ngāwari teitei o te rapa me te pakari o te kirihou.
* He kaha te kaha o ngā rauemi polyurethane ki te hono pūmau ki te nuinga o ngā rauemi, ā, ka taea hoki te whakamahi hei piripiri i te mara here.
* Ko ngā piripiri polyurethane e whakamahia nuitia ana i roto i ngā ahumahi takai, hanga whare, rakau, motuka, me te hū.
Me pēhea te hanga o te rauemi Polyurethane (PU)?
Nā te kaha o te wai-whakaaro o te polyurethane, me whakamahi i tētahi tikanga hanga hou hei whakarite i te whakaehunga PU, ko te tukanga hanga o te polyurethane wai te nuinga e whai ake nei: ① mā te polyol oligomer, te mekameka toronga, te diisocyanate hei hanga i tētahi papatipu ngota whanaunga teitei o te pre-polymer PU; ② i muri i te whakaehunga o te pre-polymer ki te wai hei hanga i tētahi marara.
E rua ngā momo matua o ngā tikanga whakarite mō te whakaemulsion polyurethane: te tikanga whakaemulsion o waho me te tikanga whakaemulsion o roto.
1. Ko te tikanga whakaemulsification o waho ko te tikanga o te whakaemulsification ā-kaha i te aroaro o te emulsifier, he kutikuti teitei.
2. Ko te tikanga whakaemulsification-whaiaro ka mahia mā te whakauru i ngā rōpū hydrophilic ki roto i te anga ngota ngota o te polyurethane.
Ka whakaurua ngā rōpū wai-aroha ki roto i te angaanga ngota PU mā te whakawhanui mekameka o ngā monomer wai-aroha, e titoa ana i ngā rōpū hanga-tote me ngā tauhohenga hanga-tote.
Te hangarua kirihou Polyurethane (PU)
- Ka taea te whakarōpū i te hangarua kirihou Polyurethane (PU) ki te hangarua ā-tinana me te hangarua matū.Mā te hangarua ā-tinana ka whai hua, ka whai hua hoki te tikanga hangarua o ngā pahuka mārō me ngā mea whakakotahi polyurethane. Ka whakaitihia te rahi o te matūriki o te hua pahuka polyurethane taketake ki tētahi paerewa ka taea te tukatuka anō i roto i ngā tukanga tuarua. Ka hurihia ngā rauemi hangarua para, ngā mea whakapaipai rānei mai i te tukanga hangahanga, hei āhua whai hua ake pērā i ngā kirikiri, ngā kirikiri, ngā paura rānei.Ko te hangarua matū te tikanga o te wawahi i ngā pahuka polyurethane ki ngā rauemi mata polyurethane, ki ētahi atu rauemi mata matū rānei mā te whakamahi i te waipiro, te amineisi, te hydrolysis, te pyrolysis rānei. He hononga urethane me te urea kei roto i te pahuka polyurethane. I roto i te tukanga o te waipiro, te aminolysis me te hydrolysis alkali, ka pakaru ngā hononga urethane me te urea i roto i te ngota polyurethane, ka pirau ki ngā polyol, ngā polyamine kakara, te hauhā waro me ētahi atu.
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