PVA 2488S

PVA 2488S is called PVA 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.

Descriptions

Característica do produto:
Parcialmente hidrolisado.
High viscosity.

Graus equivalentes:
088-50S
Kururay PVA-224S
Kururay Mowiol 47-88S
CCP BP-24S
Sekisui Selvol 350S – Celanses
JVP JP-24S
Nichigo GH-22S

Product Parameter (Specification)

Item Índice
Hidrólise (mole%) 87.0 ~ 89.0
Viscosidade (mPa.s) 44.0 ~ 50.0
Volátil (wt%) ≤ 5.0
Cinza (wt%) ≤ 0.5
Valor do pH 5 ~ 7
Pureza (%) ≥ 93.5
Tamanho da partícula Fine Powder, 80 ~ 200mesh

 

Armazenamento: Armazene em local ventilado, fresco e seco e mantenha-o longe do fogo, da energia elétrica, da umidade e da exposição ao sol. Manuseie com cuidado durante o transporte para evitar danos à embalagem. É estritamente proibido armazená-lo com produtos químicos voláteis para evitar a deterioração por adsorção.

Transporte: Durante o transporte, é necessário que os carros estejam limpos e que se tome cuidado para evitar umidade, chuva e proteção solar. Manuseie com cuidado para evitar danos à embalagem. O armazenamento é muito limitado com agentes temporários para evitar danos por adsorção.

PERGUNTAS FREQUENTES
Q:  O álcool polivinílico é solúvel?
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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