EN
PVA SINOPEC
Description
|
Item |
Hydrolysis (mol%) |
Viscosity (mpa.s) |
Volatile (%≤) |
Ash (%≤) |
PH (Value) |
|
086-03 |
85.0-87.0 |
3.4-4.2 |
≤5.0 |
≤0.4 |
5~7 |
|
088-05 |
87.0-89.0 |
4.5-6.0 |
≤5.0 |
≤0.5 |
5~7 |
|
098-05 |
98.0-99.0 |
5.0-6.5 |
≤5.0 |
≤0.5 |
5~7 |
|
088-08 |
87.0-89.0 |
8.0-10.0 |
≤5.0 |
≤0.5 |
5~7 |
|
098-08 |
98.0-99.0 |
9.0-11.0 |
≤5.0 |
≤0.5 |
5~7 |
|
088-20 |
87.0-89.0 |
20.5-24.5 |
≤5.0 |
≤0.4 |
5~7 |
|
092-20 |
91.0-93.0 |
21.0-27.0 |
≤5.0 |
≤0.5 |
5~7 |
|
094-27 |
94.0-96.0 |
22.0-28.0 |
≤5.0 |
≤0.5 |
5~7 |
|
096-27 |
96.0-98.0 |
23.0-29.0 |
≤5.0 |
≤0.5 |
5~7 |
|
100-27 |
99.0-100.0 |
22.0-28.0 |
≤5.0 |
≤0.7 |
5~7 |
|
088-35 |
87.0-89.0 |
29.0-34.0 |
≤5.0 |
≤0.3 |
5~7 |
|
092-35 |
91.0-93.0 |
30.0-36.0 |
≤5.0 |
≤0.3 |
5~7 |
|
100-35 |
99.0-100.0 |
35.0-43.0 |
≤5.0 |
≤0.7 |
5~7 |
|
088-50 |
87.0-89.0 |
45.0-55.0 |
≤5.0 |
≤0.3 |
5~7 |
|
098-60 |
98.0-99.0 |
58.0-68.0 |
≤5.0 |
≤0.5 |
5~7 |
|
100-60 |
99.0-100.0 |
58.0-68.0 |
≤5.0 |
≤0.7 |
5~7 |
|
100-70 |
99.0-100.0 |
68.0-78.0 |
≤5.0 |
≤0.7 |
5~7 |
(1) Solubility: Polyvinyl alcohol powder can be dissolved in water. Polyvinyl alcohol resin (PVA) with alcoholysis degree less than 95% can be dissolved in water at room temperature, and polyvinyl alcohol resin (PVA) with alcoholysis degree greater than 99.5% can only be dissolved in hot water above 95℃.
(2) Thermal stability: polyvinyl alcohol will soften when heated, there is no obvious change below 40℃, above 160℃, it will gradually color when heated for a long time, and decompose above 220℃ to produce water, acetic acid, acetaldehyde and butenal.
(3) Chemical resistance: PVA is almost not affected by weak acid, weak base or organic solvent, and its oil resistance is very high.
(4) Storage stability: PVA is a low viscosity polymer, and its aqueous solution is very stable at room temperature. Aqueous solutions do not deteriorate during storage.
(5) Film-forming: Due to the high adhesion between PVA molecules, PVA is easy to film, the film formed is colorless and transparent, has good mechanical strength, the surface is smooth and not sticky, and the solubility is good. Molecular film has good light transmittance, high moisture permeability, no charge, no dust collection and good printability.
