He aha te Tikanga Mahi a ngā Whakakōkī Amine ki te Polyurethane?
Ngā whakakorikori amineHe wāhanga nui o te hanga polyurethane, ā, he mea nui hoki hei whakatere i te tauhohenga i waenga i ngā polyol me ngā isocyanates (te rauemi matua mō te hanga pahuka polyurethane), hei whakahaere me te whakataurite i te tauhohenga gel me te tauhohenga hau, pahuka rānei e hanga ana i te pahuka. Mā te whakaiti i te kaha whakahohe e hiahiatia ana mō ngā tauhohenga matū ka tere ake, ka whakahaeretia hoki te whānui me te whakapakeketanga o te pahuka. He tino whai hua ngā whakakorikori amine nā te mea ka whai wāhi kaha rātou ki te tauhohenga, ka taea e ngā rōpū tauhohenga i roto i tō rātou hanganga ngota te taunekeneke ki ngā isocyanates, ā, ko ngā whakakorikori amine te nuinga o te wā kei waenga i te 0.1% me te 5.0% o ngā hanganga polyurethane. Mā tēnei āhuatanga ahurei ka taea e rātou te here ki ngā polyisocyanates, ka whakau i te matrix polyurethane whakamutunga, ā, ka whakarite kia piri ki te papa.
Ko te tukanga whakatere o te whakatere amine i roto i te pahuka polyurethane e whakatairanga ana i ngā tauhohenga matua e rua: te tauhohenga polyol-isocyanate (te hanganga o ngā hononga carbamate) me te tauhohenga isocyanate-wai (te whakaputanga o te hauhā waro). Ka puta he mirumiru i te tauhohenga whakamutunga, ka hanga he hanganga pūtau o te pahuka. Mā tēnei mahi takirua, ka taea e te whakatere amine te tukanga huka me te whakamaroke taurite, kia tino whānui te pahuka i te wā e totoka ana hei hanganga pumau. Ko ngā whakatere pēnei i teMXC-70Ka whakaratohia hoki he pihi tauhohenga whakarunga maeneene, ko te tikanga ka whakatairanga i te pikinga āta o te matotoru o te pahuka. Ka hua ake he hanganga honikoma whakahaeretia ake, he ōrite hoki, e āwhina ana ki te whakapai ake i te roa me te pumau o te pahuka.
Te Mara Whakamahinga o ngā Whakakōkī Amine
He whānuitia ngā whakamahinga polyurethane e whakamahia ana ngā whakakōkī amine, tae atu ki ngā pahuka ngohengohe me ngā pahuka mārō, ngā elastomers, ngā paninga, ngā piripiri, me ngā hiri. I roto i te hanga pahuka ngohengohe, ka āwhina rātou ki te whakatutuki i te ngawari me te ngāwari e hiahiatia ana, ā, he mea pai mō ngā urunga tāonga, ngā moenga me ngā nohoanga motuka. Mō ngā whakamahinga pahuka mārō, pērā i ngā panera whakamahana, ngā taputapu, me ngā pahuka rehu, ka whakatairangahia e ngā whakakōkī amine ngā hanganga pūtau kati kiato teitei e whakarei ake ana i te whakamahana wera me te pumau o te taha.
He tino pai ngā whakakōkī amine pēnei i te MXC-70 mō ngā tono tairongo nā te mea he iti te kakara, he iti hoki te tukunga. I roto i ngā taputapu whare, ka whakarei ake i te piri ki ngā papa whakarewa me te kirihou, he mea nui mō te whakamahana. I roto i ngā pahuka rehu me ngā pahuka pouaka, ka taea e ēnei whakakōkī te whakawhānui me te piri pai o te pahuka ki te papa, me te whakaiti i ngā kakara me ngā tukunga toenga, me te whakatutuki i ngā paerewa taiao me ngā paerewa ture.
I te nuinga o te wā, nā te maha o ngā whakamahinga me te whai huatanga o ngā whakakorikori amine, he mea nui ēnei i roto i ngā ahumahi e hiahia ana ki te whakamarumaru polyurethane, te ārai, me ngā āhuatanga here. Neke atu i te 20 tau a Mingxu Chemical Company e whakaputa ana i ngā whakakorikori polyurethane, kei a mātou te huarahi tukatuka pai rawa atu me te tīma ngaio hei arotau me te whakahou i ngā hua whakakorikori mō te mākete, he nui te tuku, nau mai haere mai ngā kiritaki ki te kōrero.
Wā tuku: Oketopa-29-2024