Phthalic Anhydride Polyester polyol
Iyi nhevedzano yemapolyols inonyanya kunhuhwirira polyester polyols yakagadzirwa nepolycondensation kana kugadziridzwa kwephthalic anhydride, diethylene glycol uye zvimwe zvigadzirwa.Izvo zvinonyanya kushandiswa mumunda wefoam yakaoma uye zvinonamatira.Ivo vane mabhenefiti ekunhuhwirira kwakaderera, kuderera kweruvara, yakakwirira kuita chiitiko, yakanakisa hydrolysis kugadzikana, yakakwira inonhuhwirira zvemukati, kugadzikana kwakanaka uye fluidity yezvinhu zvinoumbwa, Uye chimiro chechigadzirwa chinogona kugadziridzwa zvinoenderana nezvinodiwa nevatengi.
Iyi nhevedzano yepolyester polyols inogona kushandiswa zvakanyanya mufiriji, kutonhora kuchengetera, kupfapfaidza, simba rezuva, mapombi ekupisa, kuvhara kwekuvaka uye dzimwe nzvimbo dzakaoma foam kuumbwa, zvimwe zvezvinonamira zvigadzirwa.
| series | Items | Hydroxyl kukosha (mgKOH/g) | Asidhi yakakosha (mgKOH/g) | Mvura yemvura (％) | Room tembiricha viscosity (25 ℃, cps) |
| Series ye phthalic anhydride uye mamwe anonhuwirira dibasic acids | PE-B175 | 170-180 | ≤1.0 | ≤0.05 | 9000-13000 |
| PE-B503 | 300-330 | ≤1.0 | ≤0.05 | 2000-4000 | |
| PE-D504 | 400-450 | ≤2.0 | ≤0.1 | 2000-4000 | |
| PE-D505 | 400-460 | ≤2.0 | ≤0.1 | 2000-4000 |
