PVA 2688S is called 2688 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.
製品 特徴:
部分加水分解。
粘度が低い。
同等の成績：
CCP BP-26
積水セルヴォル540 - セランセス
製品 パラメータ（仕様）
|
項目 |
PVA 2688S |
|
加水分解 (mole%) |
87.0 ~ 89.0 |
|
粘度 (mPa.s) |
50.0 ~ 58.0 |
|
揮発性(wt%) |
≤5.0 |
|
灰（wt%） |
≤0.5 |
|
pH値 |
5 ~ 7 |
|
純度（%） |
≥91.5 |
|
パーティクルサイズ |
ファインパウダー, 80~200メッシュ |
ストレージ： Store in a ventilated, cool and dry place, and keep away from fire,power, prevent humid, and avoid sun exposure. Handle with care during transportation to prevent damage to the package.It is strictly forbidden to store it with volatile chemicals to prevent deterioration by adsorption.
交通機関： 輸送中は清潔な車が必要であり、湿気や雨、日焼けを避けるために注意が必要である。包装の破損を防ぐため、取り扱いには注意する。吸着ダメージを防ぐため、一時的な薬剤での保管は非常に制限される。
よくあるご質問
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.
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