He tirohanga whānui mō ngā rauemi pahuka polyurethane: mai i te hanganga moroiti ki te mahi makroskopi
Hei tētahi o ngā rauemi pūmua e whakamahia whānuitia ana i ēnei rā, ko ngā rerekētanga mahi o te pahuka polyurethane i ahu mai i ngā hoahoa rerekē o ngā hanganga pūwero. Ahakoa he rite ngā hanganga matū o te pahuka pūtau-katia me te pahuka pūtau-tuwhera, he rerekē rawa ngā āhuatanga ā-tinana nā te rerekētanga o te hanganga moroiti, he mea e kore e taea te wehe atu i te whakahaere tika o ngā whakakorikori polyurethane.
Ko te āhuatanga o te pahuka pūtau-katia ko ia mirumiru e karapotia ana e te pakitara polymer katoa hei hanga i tētahi hanganga moroiti motuhake, kati hoki. Mā tēnei hanganga ka tino pai te mahi whakamahana o te rauemi (ko te kawe wera ko te 0.018-0.028W/(m·K)) me te kaha miihini teitei (ka taea e te kaha pēhi te tae ki te 150-500kPa). Ka tutuki i te pahuka pūtau-tuwhera te mahi oro pai (ka taea e te NRC te tae ki te 0.6-0.9) me te uruhanga hau (neke atu i te 90% te tere tohanga hau) mā roto i tētahi whatunga pore hono. He mea nui te mārama ki te tikanga hanganga me ngā rerekētanga mahi o ēnei pahuka e rua ki te whiriwhiri tika i ngā pūnaha whakakorikori me te arotau i ngā tukanga whakaputa.
Te tikanga matū o te hanganga o ngā pūwero mewhakakorikoriture
Te tikanga o te hanganga pahuka pūtau-kati
He tukanga taurite hihiri te hanganga o te hanganga pūtau-kati, e whakawhirinaki ana ki ngā āhuatanga matua e toru e whai ake nei:
1. Te tere whakaputa hau: ka whakatauhia e te tere tauhohenga o te isocyanate me te wai (tauhohenga pahuka)
2. Te tere whanaketanga o te kaha o te matrix polymer: ka whakatauhia e te tere tauhohenga o te isocyanate me te polyol (tauhohenga gel)
3. Te pumau o te mata: e mau tonu ana mā te pānga tahi o te surfactant me te catalyst
Ina tere te tere o te tauhohenga o te ira, ka taea e te hanganga pūmua te hanga i tētahi kiriata pakitara he kaha rawaka i mua i te taenga o te pēhanga ā-roto o te mirumiru ki te uara matua, ā, ka noho tonu ngā pore. E whakaatu ana ā mātou raraunga whakamātautau ka taea e te whakamahinga o tētahi pūnaha whakakorikori motuhake te whakanui ake i te tere pūtau-kati mai i te 85% ki te neke atu i te 95%, ā, ka whakaitihia te tauwehenga kawe wera mā te 15-20%.
Te kaupapa o te whakarite i te pahuka pūtau-tuwhera
Ko te hanganga o te hanganga pūtau tuwhera e whakawhirinaki ana ki te tikanga "pakaru matapihi" e whakahaeretia ana. Ina tutukihia ngā tikanga e whai ake nei, ka pakaru te pakitara pūtau i te wā tika hei hanga i tētahi hanganga pūtau tuwhera:
- He āhua whakaroa te tauhohenga o te ira, nō reira ka noho ngāwari tonu te pakitara pūtau i te wā e whānui haere ana
- Ka eke te tere whakaputa hau me te tere whanaketanga kaha o te polymer ki te ōwehenga tino pai
- Ka whakaitihia te taumahatanga o te mata i te pūwāhi matua e tika ana
Mā te whakarerekē i te ōwehenga o te whakakōkī amine ki te whakakōkī whakarewa, ka taea e tātou te whakahaere tika i te ōwehenga pūtau-tuwhera i roto i te awhe o te 80-98% kia tutuki ai ngā whakaritenga tono rerekē. Hei tauira, ko te ōwehenga pūtau-tuwhera e hiahiatia ana e ngā pahuka oro he nui ake i te 92%, ko ngā rauemi tātari ia e hiahia ana kia hanganga pūtau-tuwhera katoa.
Rautaki whiriwhiri me te arotau owhakakorikoripūnaha
Pūnaha whakakorikori motuhake mō te pahuka pūtau-kati
Ko te hanga i te pahuka pūtau-katia mahi-teitei me whakataurite i ngā tauhohenga matua e toru:
1. Tauhohenga pahuka (whakaputa hau): ko ngā whakakorikori triethylenediamine (TEDA) pēnei i te MXC-102 te nuinga o te wā ka tīpakohia
2. Tauhohenga tiēre (hanganga porima): E taunakihia ana te raupapa stannous octoate MXC-T12
3. Tauhohenga whakatīmata (ātete pāmahana pai ake): Ngā whakakōkī isocyanurate motuhake pērā i te MXC-15
He tino pai ngā whakakōkī hiato raupapa MXC-CF200 i whakawhanakehia e mātou mō ngā tono pahuka pūtau-kati uaua, ā, ko ēnei āhuatanga e whai ake nei:
- He pumau te tere o te pūtau-kati i te neke atu i te 93%
- Te tere whakarerekētanga o ngā āhuatanga <1.5% (70℃, 48h)
- He hototahitanga tino pai ki ngā pūnga pupuhi HFO
- Kia tutuki i ngā paerewa tiaki ahi i roto i te umanga hanga
Otinga whakakorikori motuhake mō te pahuka pūtau-tuwhera
Ko te mea nui ki te hanga i te pahuka pūtau-tuwhera ko te whakaroa i te tauhohenga o te kirikiri, me te whakarite kia rawaka te whakamaroke i muri i te whakamaroke. Ko tā mātou raupapa MXC-OF300 e tuku ana i:
- Te pūngao tuwhera tino tika (85-99% ka taea te whakarerekē)
- He tino pakari (te pekepeke pōro > 65%)
- Ngā āhuatanga kakara iti (VOC < 50μg/m³)
- He pai te hototahitanga ki ngā ārai mura
He mea tino hira te kite atu ko tā mātou whakatere MXC-OF350 hou nei ka whakatutuki i te whakahaere tika o te hanganga pūtau tuwhera mā roto i tētahi tikanga whakahohenga whakaroa ahurei, ā, ka whakaoti angitu i te raruraru hapa pūtau kati e kitea whānuitia ana i roto i ngā pahuka pakari-teitei.
Ngā au whanaketanga hangarau me ngā otinga auaha
I te mea kei te piki haere te kaha o ngā ture taiao me ngā hiahia tono pito kanorau, kei te aro atu te hangarau whakakorikori polyurethane ki ngā wero me ngā whai wāhitanga hou:
1. Pūnaha pahuka pūtau-kati tino iti te kawe wera:
- Te whakawhanake i ngā whakakorikori e tino ōrite ana ki te whakatupuranga hou o ngā kai pupuhi HFO
- Ka whakapai ake te hangarau whakakorikori nanocomposite i te pumau o ngā pūtau-kati
- Whāinga kawe wera: <0.018W/(m·K)
2. Hangarau pahuka pūtau-tuwhera atamai:
- Te whakahaere i te pūwero tuwhera ā-rōnaki (he rerekē te pūwero i ngā wāhi rerekē)
- Pūnaha whakakorikori e aro ana ki te taiao
- Whakakōkī pahuka pūtau-tuwhera ka taea te hangarua
3. Ngā otinga whakakorikori pumau:
- Te whakawhanaketanga o ngā whakakorikori e ahu mai ana i te koiora
- Pūnaha tukunga VOC iti
- Hangarau whakamaroke pāmahana iti (te penapena pūngao neke atu i te 30%)
Tautoko hangarau ngaio me ngā ratonga
Ka whakaratohia e mātou he tautoko hangarau whānui mō ngā kaihanga polyurethane huri noa i te ao:
- Ratonga whakamātautau taiwhanga: whakarato pūrongo whakamātautau tuatahi i roto i ngā haora 72
- Te arotautanga o te raina whakaputa: te aratohu hangarau i te papaanga me te whakatikatika tukanga
- Te whanaketanga ritenga: te whakawhanake i te pūnaha whakakorikori motuhake e ai ki ngā hiahia motuhake
- Whakangungu hangarau: Whakahaerehia ngā wānanga hangarau pahuka me te tono whakakorikori i ia wā
Mō ngā mōhiohio hangarau taipitopito, mō te tono rānei mō te aromatawai tauira kore utu, whakapā mai ki tā mātou tīma hangarau mā ngā tikanga e whai ake nei:
- Email: info@mingxuchem.com
- Paetukutuku: https://www.mingxuchem.com/
Ko te whiriwhiri i te pūnaha whakakorikori tika he taahiraa matua ki te arotau i te mahi pahuka me te whakapai ake i te whai huatanga o te whakaputa. Kia mahi tahi tātou ki te whakatairanga i te whanaketanga auaha o te hangarau pahuka polyurethane.
Wā tuku: Mei-06-2025