He tirohanga whānui mō ngā rauemi pahuka polyurethane
He rauemi pūmua te pahuka polyurethane, he hanganga porowhita tōna. He whānuitia te whakamahinga i roto i ngā mara maha pērā i te hanga whare, te tāonga whare, ngā motuka, te takai, me ētahi atu nā te mea he pai rawa te ārai wera, te ārai oro, te ārai urunga me ngā āhuatanga miihini. He tukanga ā-tinana, ā-matū hoki te hanganga o te pahuka polyurethane, ā, he mahi whakahaere nui tā ngā whakakorikori.
Te tikanga hanga o te pahuka polyurethane
Ko te hanganga o te pahuka polyurethane e uru ana ki ngā tauhohenga matū matua e rua: te tauhohenga pahuka me te tauhohenga tiēre.
Ko te tauhohenga pahuka e pā ana ki te tukanga e tauhohe ai te isocyanate (-NCO) ki te wai hei whakaputa i te hauhā waro (CO₂):
R-NCO + H₂O → R-NH₂ + CO₂↑
Ka whakawhanuitia te ranunga e te hau CO₂ i puta mai i tēnei tauhohenga hei hanga i te hanganga pahuka.
Ko te tauhohenga tiēre e pā ana ki te tukanga e tauhohe ai te isocyanate ki te polyol hydroxyl (-OH) hei hanga i tētahi mekameka polyurethane:
R-NCO + R'-OH → R-NH-CO-O-R'
Mā tēnei tauhohenga ka whakatau te kaha whakamutunga me ngā āhuatanga hangarau o te pahuka.
Te tikanga hanganga o ngā pūtau tuwhera me ngā pūtau kati i roto i te pahuka
1. Te tikanga hanga o te pahuka pūtau-tuwhera
Ko te take matua o te hanganga o te pahuka pūtau-tuwhera ko te mea, ina puta te pēhanga nui rawa atu i roto i te mirumiru, kāore te pakitara pūtau i hangaia e te tauhohenga tiēre e kaha ki te tu atu i te totoro o te kiriuhi pakitara i puta mai i te pikinga o te pēhanga hau, ka pakaru te kiriuhi pakitara mirumiru me te puta o te hau mai i te pakaru. Mā tēnei āhuatanga hanganga ka puta ngā āhuatanga e whai ake nei ki te pahuka pūtau-tuwhera:
- He pai te uruhanga o te hau
- He tino pai te mahi mimiti oro
- He iti te kaha ā-mīhini
- Te kawe wera teitei
He tohu nui te tere o te pūtau tuwhera (te tere pūtau kati rānei) mō te ine i te mahi pahuka, e pā tika ana ki ngā tawhā mahi matua pērā i te kawe wera, te uruhanga makuku me te pumau o ngā āhuatanga o te pahuka.
2. Te tikanga hanga o te pahuka pūtau-kati
Ko te hanganga o te pahuka pūtau-katia me tere ake te tere o te whakapūkara, e tutukihia ana mā te whakamahi i ngā polyol polyether maha-mahi, he iti te taumaha ngota hei tauhohe ki ngā polyisocyanates. I roto i tēnei pūnaha:
- He tere rawa te tere o te tauhohenga o te tiēre
- Ka tere te piki o te kaha o te pakitara pūtau
- Kāore e taea e te hau te pakaru i roto i te pakitara pūtau
- Ka hangaia he hanganga pahuka e whakahaerehia ana e ngā pūtau kua kati
He whānuitia te whakamahinga o te pahuka polyurethane mārō pūtau-kati i roto i ngā ahumahi whakamahana whare me te rokiroki makariri nā te mea he tino pai te mahi whakamahana wera. Ka taea e tōna tere pūtau-kati te eke ki te 90%-95%.
Te tono oMXC-37 (DMAEE)whakakorikori i roto i te pahuka polyurethane
He whakakorikori amine kore-tukunga, iti te kakara, a MXC-37 (DMAEE) me ngā painga ahurei i roto i te hanga pahuka polyurethane:
1. Ngā āhuatanga o te hua
- He nui te huka: he tino pai mō ngā whakatakotoranga he nui te wai
- He iti te kakara: ka tino whakaiti i te kakara amine noa i roto i te pahuka
- Ngāwari te whakamahi: ka taea te whakamahi hei whakakorikori matua anake, hei whakakorikori tahi rānei me te BDMAEE, me ētahi atu.
2. Ngā wāhi tono matua
- Pahuka polyurethane rehu wai-pūpū iti-kiato, pahuka wai-pūpū (SPF)
- Pahuka ngohengohe whakaū e hangai ana ki te ester
- Pahuka pūtau-iti
- Ngā Elastomers
- Te whakarewa werohanga tauhohenga (RIM) me te whakarewa werohanga tauhohenga whakakaha (RRIM)
- Ngā tono takai pahuka pakari
3. Ngā painga hangarau
Ka taea e MXC-37 (DMAEE) te:
- Whakapai ake i te hanganga o ngā pūwero o te pahuka
- Whakapai ake i te pumau o ngā āhuatanga o te pahuka
- Whakapai ake i te kounga o te mata o te hua
- Te Whakaiti i ngā Tukunga Matū Waro Waro (VOC)
Te Kōwhiringa me te Arotautanga oKaiwhakaoho Polyurethane
I roto i te whakaputanga tuturu, me whai whakaaro ki ngā āhuatanga e whai ake nei i te kōwhiringa o ngā whakakorikori:
1. Te Tauhohenga: Kōwhiria he whakakorikori me te mahi e tika ana kia rite ki ngā whakaritenga tukanga
2. Ngā whakaritenga mō te kakara: Me whiriwhiri ngā whakakorikori kakara iti mō ngā tono e pāngia ana e te kakara
3. Te mahi taiao: Te whakatutuki i ngā ture taiao e kaha haere ana
4. Te Whai Hua o te Utu: Te Whakapai ake i ngā Utu me te Whakapūmau i te Mahi
Kua noho ko te MXC-37 (DMAEE) hei whakakorikori whiriwhiri mō te maha o ngā hua pahuka polyurethane kounga teitei nā te mea he tino pai te mahi whānui, inā koa i roto i ngā tono me ngā whakaritenga tino kaha mō te kakara me te tiaki taiao.
Whakamutunga
He mahi nui tā ngā whakakōkī polyurethane i roto i te whakarite rauemi pahuka. Ka taea e ngā momo whakakōkī rerekē te whakahaere i te hanganga o ngā pūwero, ngā āhuatanga ā-tinana me ngā āhuatanga tukatuka o te pahuka. Hei whakakōkī whai hua, ā-taiao hoki, ka whakaratohia e MXC-37 (DMAEE) he otinga tino pai mō te hanga pahuka polyurethane, inā koa mō ngā hua pahuka e hiahia ana ki te iti o te kakara me te mahi teitei. Mā te whakapai tonu i ngā whakaritenga tiaki taiao me te whanaketanga tonu o te hangarau, ka nui haere te mahi a tēnei momo whakakōkī mahi teitei i roto i te umanga polyurethane.
Wā tuku: Paenga-whāwhā-22-2025