Nā huahana
Polyether kūikawā - polyether PET kaumaha molekala waena
Nā Waiwai a me nā Hoʻohana
He wai ia i ka mahana o ka lumi, kahi mea maʻalahi e hoʻohana a hana. ʻO ka mahana hoʻololi aniani o -80 ℃, me ka hana haʻahaʻa maikaʻi loa, ʻo nā waiwai mechanical o ka elastomer ua kokoke i nā PTMG.
Hoʻohana nui ʻia i nā ʻano propellant paʻa, me nā waiwai mechanical haʻahaʻa haʻahaʻa maikaʻi loa a me kahi ākea o nā mahana hana.
Me ka maʻalahi o ka molekala maikaʻi, hiki iā ia ke pani i ka PTMG i ka ʻili hana maʻalahi a me ka ʻīnika paʻi; hiki ke hoʻohana ʻia i nā mea hoʻopili haʻahaʻa haʻahaʻa, nā uhi, nā elastomers polyurethane a pēlā aku.
Nā kikoʻī loea
| Mea | Nā kikoʻī | ||||
| Ka hana ʻole | ʻEkolu hana | ||||
| ʻAno I | ʻAno II | ʻAno III | ʻAno IV | ||
| Helu awelika kaumaha molekala (Mn) | 3500±350 | 4000±400 | 4500±450 | 5000±500 | 4500~7000 |
| Ka waiwai hydroxyl, mgKOH/g | 23.0~37.6 | 20.1~32.6 | 17.9~29.2 | 16.2~26.4 | 19.5~45.0 |
| Ka waiwai ʻakika, mgKOH/g | ≤0.10 | ||||
| Ka hapa nui o ka wai, % | ≤0.10 | ||||
