Cov khoom
Tshwj xeeb polyether - nruab nrab molecular hnyav PET polyether
Khoom thiab Kev Siv
Nws yog kua ntawm chav tsev kub, uas yog yooj yim rau siv thiab txheej txheem. Cov iav hloov pauv kub ntawm -80 ℃, nrog kev ua tau zoo ntawm qhov kub thiab txias, cov khoom siv hluav taws xob ntawm elastomer yog ze rau cov PTMG.
Feem ntau yog siv rau hauv cov khoom propellant formulations, nrog zoo heev low-temperature mechanical zog thiab ntau yam kev khiav hauj lwm kub.
Nrog zoo molecular yooj, nws muaj peev xwm hloov PTMG nyob rau hauv saj zawg zog dag tawv thiab luam ntawv number case; Nws tuaj yeem siv rau hauv cov nplaum uas tsis tshua muaj kub-resistant, coatings, polyurethane elastomers thiab lwm yam.
Technical specifications
| Yam khoom | Specification | ||||
| Di-functionality | Tri-functionality | ||||
| Hom I | Hom II | Hom III | Hom IV | ||
| Tus lej nruab nrab molecular hnyav (Mn) | 3500 ± 350 | 4000 ± 400 | 4500 ± 450 | 5000 ± 500 | 4500-7000 |
| Hydroxyl tus nqi, mgKOH / g | 23.0-37.6 Nws | 20.1-32.6 Nws | 17.9-29.2 Nws | 16.2-26.4 Nws | 19.5-45.0 Nws |
| Acid nqi, mgKOH/g | ≤ 0.10 | ||||
| Cov dej num feem ntau,% | ≤ 0.10 | ||||
