3,3′,4,4′-Biphenyltetracarboxylic dianhydride CAS: 2420-87-3 3
whakatakotoranga
| TAONGA | NGĀ WHAKATAUTANGA |
| Āhua | Paura mā |
| Te Parakore (HPLC) | 99.9% |
| Te Pūwāhi Rewa | ≥298℃ |
| Whakamātautau Konganuku | 500ppb Teitei mō te konganuku kotahi |
| WHAKAMUTUNGA | E Ū ana ngā hua ki ngā paerewa a te umanga |
Whakamahinga
3,3',4,4'-Biphenyltetracarboxylic dianhydride (BPDA)he takawaenga nui i roto i te hanganga rauropi, ā, he whānuitia ana whakamahinga:
Te hanga polyimide
- Kiriata mahi-teitei: Ka taea te tauhohenga polycondensation me ngā matū diamine hei whakaputa kiriata polyimide. He tino pai te ātete o ēnei kiriata ki te pāmahana teitei. Ahakoa i roto i te taiao pāmahana teitei i runga ake i te 200 °C, ka taea tonu e rātou te pupuri i ngā āhuatanga miihini me te whakamarumaru hiko pai. Nō reira, he maha ngā wā e whakamahia ana i roto i te ao rererangi hei tiaki whakamarumaru o ngā motuka me ngā taputapu hiko, hei rauemi turanga rānei mō ngā papa hiko tānga ngāwari.
- Kirihou hangarau: He kaha nui ngā kirihou hangarau polyimide i hangaia, he pakari pai, ā, he ātete hoki ki te kakahu. Ka taea te werohanga hei hanga i ētahi wāhanga tino tika me ngā whakaritenga tino mō ngā āhuatanga miihini, pērā i ngā whāriki iti huri noa i ngā miihini rererangi me ngā wāhanga tuku i roto i ngā wati miihini kounga teitei.
- Mara paninga: Ko ngā paninga polyimide i hangaia i runga i te BPDA he ātete tino pai ki te waikura matū. Ina whakamahia ki ngā pakitara o roto o ngā tāke rokiroki matū me ngā tauhohenga, ka taea e rātou te ātete ki te mimiti o ngā waikawa, ngā turanga, me ngā whakarewa rauropi mō te wā roa, ka whakarite i te roa o te ora o te taputapu. I te wa ano, he pai hoki te ātete ki te wera. Ina pania ki ngā paipa putanga hau wera-teitei me ngā anga miihini, e kore e ngawari te tihore i te pāmahana teitei.
- Ngā rauemi muka: Ka whakamahia hei hanga muka mahi-teitei. He kaha teitei, he teitei te modulus, ā, he tino pai te pumau o ngā muka polyimide e hangaia ana. He maha ngā wā ka whakamahia hei hanga kakahu ātete ahi, taura motuhake mō te rererangi, me ētahi atu, e whakarato ana i te tiaki pono mō ngā kaimahi me ngā taputapu i roto i ngā āhuatanga pāmahana teitei me te mōrearea nui.
Te Tākai me te Tukunga
20KG/Pahu, kia rite rānei ki ngā whakaritenga a te kiritaki.
Nō ngā taonga noa, ā, ka taea te tuku mā te moana me te rangi
Te pupuri me te rokiroki
Te roa o te oranga: 24 marama mai i te rā i hangaia ai, i roto i te takai taketake kāore anō kia whakatuwheratia, rongoatia ki te wāhi matao, maroke, ā, kāore e taea te ārai i te rā tika, i te wai rānei.
Whare putunga hauhautanga, Whakamaroke pāmahana iti, Wehea mai i ngā waikura me ngā waikawa.
