PVA 2488S is called 2488 Fine Powder and it used to produce textile sizing materials, coatings, adhesive, and it is widely used for paper processing, emulsifying agents, dispersants and blocking colloids. Besides, it can be employed as membranes, soil modifiers,etc. Mainly used to produce textile sizing materials, coatings,adhesive, acetal derivations, and it is extensively applied to paper processings, emulgents, dispersants and blocking colloids.
Característica del producto:
Parcialmente hidrolizado.
Baja viscosidad.
Grados equivalentes:
088-50
Kururay PVA-224
Kururay Mowiol 47-88
CCP BP-24S
Sekisui Selvol 350 - Celanses
JVP JP-24
Nichigo GH-22
Producto Parámetro (Especificación)
|
Artículo |
PVA 2488S |
|
Hidrólisis (mole%) |
87.0 ~ 89.0 |
|
Viscosidad (mPa.s) |
44.0 ~ 50.0 |
|
Volátil(wt%) |
≤5.0 |
|
Ceniza (wt%) |
≤0.5 |
|
Valor pH |
5 ~ 7 |
|
Pureza (%) |
≥91.5 |
|
TamañoPartícula |
Polvo fino, 80~200malla |
Almacenamiento: Almacenar en un lugar ventilado, fresco y seco, y mantener alejado del fuego, la electricidad, evitar la humedad y la exposición al sol. Está estrictamente prohibido almacenarlo con productos químicos volátiles para evitar su deterioro por adsorción.
Transporte: Durante el transporte, es necesario que los coches estén limpios; hay que tener cuidado para evitar la humedad, la lluvia y la protección solar. Manipular con cuidado para evitar daños en el envase. El almacenamiento es muy limitado con agentes temporales para evitar daños por adsorción.
PREGUNTAS FRECUENTES
Q: Is polyvinyl alcohol soluble?
A: Polyvinyl alcohol powder is water soluble with transparent solution. Most PVA series are used while dissolved in water. Its solubility depends mainly on degrees of polymerization and alcoholysis. At the same temperature, the solubility increases along with reduction of the degree of alcoholysis, and decreases with increase of the viscosity; for the PVA series with the same degree of polymerization, if their degrees of alcoholysis are low, their temperatures get low upon completion of dissolution, and vice versa; for the PVA of the same alcoholysis, if the degrees of polymerization are high, their temperatures get high upon completion of dissolution, and vice versa. The PVA at the degrees of alcoholysis above 88 (mol/mol)% depends greatly on temperature changes, that is, dissolution or partial swelling may not take place at a particular temperature.
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