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

产品特点
部分水解。
High viscosity.

同等学历：
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)

项目	索引
水解（摩尔%）	87.0 ~ 89.0
粘度（mPa.s）	44.0 ~ 50.0
挥发性（wt%）	≤ 5.0
灰分（wt%）	≤ 0.5
pH 值	5 ~ 7
纯度 (%)	≥ 93.5
颗粒大小	Fine Powder, 80 ~ 200mesh

存储： 请存放在通风、阴凉、干燥的地方，远离火源、电源，防止潮湿，避免阳光暴晒。运输过程中要小心搬运，防止包装破损。严禁与挥发性化学物品存放在一起，防止吸附变质。

交通在运输过程中，需要保持车厢清洁，注意防潮、防雨和防晒。小心搬运，防止损坏包装。储存时尽量少用临时药剂，以防吸附损坏。

常见问题
Q: 聚乙烯醇可以溶解吗？
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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