Cov khoom
Cov polyether tshwj xeeb - qhov hnyav molecular nruab nrab PET polyether
Cov Khoom thiab Kev Siv
Nws yog kua ntawm chav tsev kub, uas yooj yim rau siv thiab ua. Iav hloov pauv kub ntawm -80 ℃, nrog rau kev ua haujlwm kub qis zoo heev, cov khoom siv kho tshuab ntawm elastomer ze rau cov ntawm PTMG.
Feem ntau siv rau hauv cov qauv khoom siv propellant, nrog cov khoom siv kho tshuab zoo heev thiab ntau yam kub ua haujlwm.
Nrog kev ywj pheej zoo ntawm cov molecular, nws tuaj yeem hloov PTMG hauv cov tawv nqaij yooj ywm thiab cov kua luam ntawv; nws tuaj yeem siv rau hauv cov nplaum uas tsis tshua muaj qhov kub thiab txias, cov tshuaj pleev xim, polyurethane elastomers thiab lwm yam.
Cov lus qhia txog kev siv tshuab
| Khoom | Cov Lus Qhia Tshwj Xeeb | ||||
| Di-functionality | Tri-functionality | ||||
| Hom I | Hom II | Hom III | Hom IV | ||
| Tus lej nruab nrab ntawm qhov hnyav molecular (Mn) | 3500 ± 350 | 4000 ± 400 | 4500 ± 450 | 5000 ± 500 | 4500~7000 |
| Tus nqi hydroxyl, mgKOH / g | 23.0~37.6 | 20.1~32.6 | 17.9~29.2 | 16.2~26.4 | 19.5~45.0 |
| Tus nqi kua qaub, mgKOH / g | ≤0.10 | ||||
| Feem pua ntawm cov dej,% | ≤0.10 | ||||
