The PVA 2088G production facilities of our company have been perfecting day by day with the long-term absorption and technological transformation on the basis of importing the complete set of technology from European Company. PVA produced by our company is good in performances and stable in quality. It enjoys a great reputation both at home and abroad.
Характеристика на продукта:
Частична алкохолиза.
Нисък вискозитет.
Еквивалентни класове:
088-35
Kuraray PVA-217
Kuraray Mowiol 32-88
CCP BP-20
JVP JP-20
Продукт Параметър (спецификация)
|
Артикул |
PVA 2088G |
|
Хидролиза (mole%) |
87.0 ~ 89.0 |
|
Вискозитет (mPa.s) |
28.0 ~ 35.0 |
|
Летливи (wt%) |
≤5.0 |
|
Пепел (wt%) |
≤0.5 |
|
Стойност на pH |
5 ~ 7 |
|
Чистота (%) |
≥91.5 |
|
Particle Size |
20~25Мрежа |
Съхранение: The product should be stored in a dry and ventilated room with a room temperature of 5-30℃ and stored in batches. Keep away from power, moisture, and sunlight. It is strictly prohibited to store together with volatile chemicals to prevent deterioration due to adsorption.
Транспорт: При транспортиране се изискват чисти превозни средства, трябва да се обърне внимание на избягването на влага, дъжд и слънчева защита. Боравете с него внимателно, за да не повредите опаковката. Строго забранено е да се съхранява заедно с летливи химикали, за да се предотврати влошаване на адсорбцията
ЧЕСТО ЗАДАВАНИ ВЪПРОСИ
Q: What’s the property Index of polyvinyl alcohol ?
A: Polyvinyl alcohol PVA is a solid substance, colorless and scentless in the shape of floccus, flake or granule. As it contains plenty of hydroxyl groups in its molecule, PVA is easily soluble in water as well as in organic compounds also containing hydroxyl such as glycerol, glycol, acetic acid, acetaldehyde and benzoic acid, except for general organic solvents in which it is insoluble. When heated up to 130-140℃, PVA gets yellow without essential changes in nature; when at 160℃ for a longer time, it gets darker; at 200℃, inter-molecular dehydration takes place with lower water solubility; at above 200℃, intra-molecular dehydration takes place; nearly at 300℃, PVA is decomposed into water, acetic acid, acetaldehyde and crotonaldehyde. The bulk densities of PVA vary depending on methods of alcoholysis: 0.2~0.27g/ml for high alkali alcoholysis and 0.42~0.52 g/ml for low alkali alcoholysis.
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