He otinga whakamahana pai rawa atu te whakamahana pahuka rehu, e rua ngā wāhanga matua: ko ngā kapia polyol me tētahi momo isocyanate. Ina whakakotahihia ēnei wāhanga, ka tauhohe hei hanga i tētahi pahuka e whānui ana, e totoka ana hei polyurethane. He maha ngā whakamahinga me te whai hua o ngā pahuka rehu polyurethane nā te mea he iti te kawe hiko i roto i ō rātou pūwero, e whakarei ake ana i ō rātou āhuatanga whakamahana. E rua ngā momo matua o te whakamahana pahuka rehu: tuwhera me te kati. He painga motuhake me ngā wāhi tono o ia momo.
He aha te mea hanga o te whakamahana pahuka rehu?
Ina whakaranua ngā polyol me ngā isocyanate, ka hangaia he pahuka, ka hanga he hanganga polymer kaha. Nā te iti o te kiato me te kakano ngawari, ngāwari o te pahuka rehu pūtau-tuwhera he mea tino pai mō ngā tono o roto e hiahia ana ki te mimiti haruru. I tētahi atu taha, he matotoru ake, he mārō ake te pahuka rehu pūtau-kati. Kua kati katoa ōna pūwero, ka mau te hau, ā, ka piki ake te uara-R, e tohu ana i te pai o te whakamarumaru wera. He ātete ki te makuku ngā pahuka pūtau-kati, ā, he mahi rua hei ārai hau me te mamaoa, he mea tino rongonui i roto i ngā taiao uaua.
Kei hea te whakamahinga o te whakamahana pahuka rehu?
He whānuitia te whakamahinga o te pahuka rehu i roto i ngā mahi kāinga, arumoni me ngā mahi ahumahi. E mōhiotia ana te pahuka pūtau-tuwhera mō tōna ārai haruru whai hua, ā, he mea noa te whakamahi ki ngā pakitara o roto, ki ngā papa me ngā tuanui. Nā tōna matotoru me tōna pakari, he maha ngā wā ka whakamahia te pahuka pūtau-kati mō ngā pakitara o waho, ki ngā rūma o raro, ki ngā wāhi ngoki, me ngā rūma o runga.
He tino whai hua te pahuka rehu pūtau-katia mō te whakamahana o te tuanui. Ehara i te mea he whakamahana anake tēnei rauemi, engari he ārai hau me te mamaoa hoki, he mea nui hei ārai i te kohikohinga o te makuku i roto i te tuanui. Mā te aukati i te hau me te makuku, ka āwhina te pahuka rehu pūtau-katia ki te whakahaere i te pāmahana o roto, te whakaiti i ngā pire hiko me te tiaki i ngā wāhanga hanganga mai i ngā kino wai pea.
Ngā Whakakōkī Polyurethane i roto i ngā Whakamahinga Pahuka Rehu
Ngā whakakorikori polyurethane pērā iMXC-BDMA(N,N-dimethylbenzylamine) meMXC-TMAHe mea nui ēnei i roto i te hanga i te whakamahana pahuka rehu. Ka whakarei ake a MXC-BDMA i te rere me te hanganga pūtau o te pahuka, ka whakatairanga i te tohatoha ōrite me te piri pai ki ngā papa. He whānuitia te whakamahinga o tēnei whakakorikori i roto i te pahuka polyurethane pakari, kia pai ai te pakari me te pumau o te pahuka. Ko te MXC-TMA, he whakakorikori amine tuatoru, he mea hanga mō ngā tono e hiahia ana ki te tauhohenga polyisocyanurate whakahaeretia, pērā i te pahuka pakari e whakamahia ana i roto i ngā pepa me te whakamahana mō ngā taputapu pēnei i ngā pouaka whakamātao. Ka whai wāhi atu ki te whakamahana maeneene o te pito o muri, kia mau ai te pakari me te mahi i roto i te wā.
Ko te whakamahana pahuka rehu tonu te otinga pai rawa atu nā te mea he ngāwari ki te urutau, he teitei ngā uara whakamahana, me ōna āhuatanga tiaki. Mā ngā whakakorikori tika, ka tutuki i ngā tono pahuka polyurethane ngā whakaritenga mahi pakari puta noa i ngā taiao hanga whare rerekē.
Wā tuku: Whiringa-ā-rangi-04-2024