He rauemi nui te pahuka polyurethane (PU pahuka) i roto i ngā ahumahi maha, tae atu ki te hanga, te hanga motuka, te takai, me te whakamahana. Ko te tukanga hanga o te pahuka PU ko te tauhohenga o ngā polyol me ngā isocyanates, ā, ko ngā whakakorikori e whakahaere ana i te tere tauhohenga, te whanonga pahuka, me te hanganga pahuka.Ngā whakakorikori polyurethaneHe mea nui te mahi a ngā matū pēnei i te MXC-37 (DMAEE) i roto i ēnei mahi, e whakapai ake ana i ngā āhuatanga o te pahuka me te whakapiki ake i te pai o te whakaputa. Ka whakamāramahia e tēnei tuhinga ngā wāhanga mahi o te pahuka PU me te whakamārama i te tikanga o te hanganga pahuka, me te arotahi ki te mahi a te MXC-37.
Ngā Whakamahinga o te Pahuka Polyurethane
He maha ngā whakamahinga o te pahuka polyurethane, pērā i te pai o te whakamarumaru wera, te mimiti ru, me ngā āhuatanga mama. E tutuki ana i ngā momo matua e rua o te pahuka polyurethane, te pahuka mārō me te pahuka ngāwari, ngā hiahia ahumahi rerekē.
Pahuka polyurethane mārō: Ko te pahuka polyurethane pakari te mea e whakamahia nuitia ana mō ngā mahi whakamahana. Nā ōna āhuatanga whakamahana pai rawa atu, e whakamahia ana i roto i te hanganga whare, pouaka whakamātao, pouaka tio, wāhi rokiroki makariri, me te kawe i ngā taonga e pāngia ana e te pāmahana. Ko ngā pahuka pakari he pūtau kati, e āwhina ana i a rātou ki te pupuri i tō rātou kaha, tō rātou roa, me ō rātou āhuatanga whakamahana.
Pahuka polyurethane ngāwari: E whakamahia whānuitia ana te pahuka polyurethane ngāwari i roto i te hanga moenga, urunga, nohoanga motuka, me te whakamahana mō ngā paipa me ngā tāke. Ka whakarato i te whakamarie, te tautoko, me te mimiti haruru pai rawa atu, ka waiho hei whiringa rongonui i roto i ngā umanga tāonga me ngā umanga motuka.
Ngā pahuka motuhake: Ka taea hoki te whakamahi i ngā pahuka polyurethane i roto i ngā mahi motuhake ake, pērā i te hanga pahuka moroiti, ngā elastomers, me ngā rauemi takai pahuka pakari. He āhuatanga ahurei tō ēnei pahuka e tutuki ai ngā whakaritenga motuhake pērā i te manawanui nui, te ngāwari, me te whakaiti i te taumaha.
Tikanga Hanga Pahuka Polyurethane
Ko te tukanga hanga pahuka polyurethane e uru ana ki te tauhohenga i waenga i ngā polyol me ngā isocyanate, e āwhinahia ana e ngā whakakorikori, ngā matū pupuhi, me ngā mea whakaū. Ka puta he hanganga polymer me ngā mirumiru hau i tēnei tauhohenga, ka hua ake te hanganga pahuka. Ka taea te wehewehe i te tikanga o tēnei hanganga ki te hanganga o te pahuka pūtau-tuwhera me te pahuka pūtau-kati.
1. Te Hanganga o te Huka Pūtau-Tuwhera
Ka puta te pahuka pūtau-tuwhera ina pakaru ngā mirumiru e puta mai ana i te tukanga pahuka nā te pēhanga hau nui i roto i te mirumiru. Ina piki ake te pēhanga i roto i ngā mirumiru, ka kore e kaha ngā pakitara mirumiru, e hangaia ana e te tauhohenga tiēre, ki te tu atu i te pēhanga hau o roto. Ka pakaru tēnei, ka tukuna te hau mai i te mirumiru. Nō reira, ka noho te hanganga pahuka hei pūtau-tuwhera.
Ko te tere o te whakakī me te kaha o ngā pakitara polymer te mea nui ki te hanganga o te pahuka pūtau-tuwhera. He pānga nui te ōrau o ngā pūtau tuwhera i roto i te pahuka ki ngā āhuatanga o te rauemi. Hei tauira, ko te nui ake o te ihirangi pūtau-tuwhera ka taea te whakanui ake i te urunga makuku, te whakaiti i ngā āhuatanga whakamarumaru, me te pā ki te pumau o te āhua o te pahuka. I roto i te nuinga o ngā pahuka pakari, he iti noa te ihirangi pūtau-tuwhera, i waenga i te 5% me te 10%, ko te toenga 90% ki te 95% he pūtau kati.
2. Te Hanganga Pahuka Pūtau-Katia
Ko ngā pahuka pūtau-kati e tohuhia ana e tō rātou hanganga pūtau matotoru me te ōrite, ka mau te hau i roto i ngā pūtau, ka hanga he pahuka pumau, pakari. Ko te tere o te tiēre i roto i ngā pūnaha pahuka pūtau-kati he tere tonu, e āwhinahia ana e ngā polyols polyether maha-mahi, iti-te-taumaha-ngota me ngā polyisocyanates. Mā ēnei pūnaha tauhohe tere ka whakarite kia kore te hau i roto i ngā mirumiru e whai wā ki te puta i mua i te whakapakeketanga o te pahuka, ka hua ake he hanganga pahuka e whakahaerehia ana e ngā pūtau kua kati.
He pai ake te whakamarumaru o ngā pahuka polyurethane pūmau-pūtau-kati, ā, e whakamahia whānuitia ana i roto i ngā ahumahi pēnei i te hanga whare, he mea nui ngā āhuatanga whakamarumaru wera. Ka kitea hoki te whakamahinga i roto i ngā tono rokiroki makariri nā te mea he pai ake te pupuri i te wera me te ātete i te urunga o te makuku.
Te tūranga oMXC-37 (DMAEE)i roto i te Hanga Pahuka Polyurethane
Ko te MXC-37, e mōhiotia ana ko te DMAEE (Dimethylaminoethoxyethanol), he matū whakakorikori amine kāore he tukunga, he iti te kakara, e whakamahia whānuitia ana i roto i te hanga pahuka polyurethane. Nā tōna kaha pahuka teitei, he tino pai mō ngā whakatakotoranga he nui te ihirangi wai, pērā i te pahuka polyurethane rehu pūngāwerewere (SPF) he iti te matotoru, he pahuka wai-pūngāwerewere.
He whakakorikori te mahi a te MXC-37 e tere ake ai te tauhohenga isocyanate-polyol, e whakatairanga ana i te hanganga o te pahuka. Ko tētahi o ngā painga matua o te MXC-37 ko tōna kaha ki te whakaiti, ki te whakakore rānei i te haunga amine noa e pā ana ki te hanga pahuka polyurethane. Nā tēnei ka tino pai mō ngā tono e nui ana te whakahaere i te haunga, pērā i te whakamahana whare noho me te arumoni.
Haunga tōna tūranga hei whakakorikori matua, ka taea hoki te whakamahi i te MXC-37 hei whakakorikori tahi me ētahi atu whakakorikori amine, pērā i te BDMAEE, hei whakapai ake i te whai huatanga whānui o te tauhohenga. Mā te whakaiti i te whakamahinga o ngā amine kaha ake, ka āwhina te MXC-37 ki te whakaiti i ngā tukunga, ka waiho hei kōwhiringa pai mō te taiao mō te hanga pahuka polyurethane.
E whakamahia ana te MXC-37 i roto i te whānuitanga o ngā tono pahuka, tae atu ki:
- Ngā pahuka ngohengohe whakaū e hangai ana ki te esterMō ngā tono e hiahia ana ki ngā pahuka ngohengohe, ngāwari.
- Ngā pahuka pūtau-itiHei whakahaere tika i te hanganga pahuka.
- Ngā Elastomers me te RIMI roto i te hanga rauemi pahuka ngāwari, pakari hoki.
- Tākai pahuka pakariMō ngā tono e hiahia ana ki te kaha ā-mīhini me te whakamarumaru wera nui.
Whakamutunga
He rauemi maha ngā whakamahinga o te pahuka polyurethane, ā, he whānui te whakamahinga, e kitea ana te whakamahinga i roto i ngā ahumahi maha nā tōna pai o te whakamarumaru wera, te whakaiti i te wiri me ngā āhuatanga ka taea te whakarite. He mea nui ngā matū whakakorikori pēnei i te MXC-37 i roto i te hanga pahuka polyurethane nā te mea ka āwhina i te whakahaere i te tukanga pahuka, te whakapai ake i te mahi hua me te whakaiti i ngā kakara me ngā tukunga kino. Mā te mārama ki ngā tikanga kei muri i te hanganga o ngā pahuka, ahakoa he pūtau-tuwhera, he pūtau-kati rānei, ka taea e ngā kaihanga te whakarite hua ki ngā hiahia motuhake, mai i ngā rauemi whakamarumaru ki ngā pahuka motuhake mō ngā momo ahumahi.
Wā tuku: 24-Pepuere-2025