离子交换树脂
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D113大孔弱酸性丙烯酸型阳离子交换树脂 |
离子交换树脂
D113大孔弱酸性丙烯酸型阳离子交换树脂
a.物化性能:本品为乳白色至乳黄色不透明粒状颗粒,属于大孔径离子交换树脂,其颗粒粒径为0.3~1.25mm,相对密度为1.15~1.20,树脂含固量为35%~60%,含水量为40%~55%,在水溶液中呈弱酸性,化学性质稳定,耐酸碱,无毒,可燃。
b.制备方法:以丙烯酸甲酯与衣康酸烯丙酯为共聚单体,加入一种可与单体互溶而不参加聚合反应的惰性物质,如羟乙基纤维素、明胶为分散剂,在过氧化苯甲酰为引发剂的作用下,于65~95℃范围内进行悬浮共聚,合成珠体。待共聚结束后再除去这类致孔物后,在碱液中进行水解,后处理,转型后即可得到物理孔的产品。
c.产品应用:
(1)用D113弱酸性阳离子树脂与001×7强酸性阳离子树脂配套使用。
(2)用D113弱酸性阳离子树脂与001×7强酸性阳离子树脂、201×7强碱性阴树脂联合使用。
D201大孔强碱性苯乙烯型阴离子交换树脂
a.物化性能:本品为乳白色至淡黄色、不透明粒状,属于大孔径离子交换树脂。其颗粒粒径为0.3~1.25mm。相对密度为1.0~1.1,树脂含固量为35%~60%,含水量为40%~60%。
本品在水溶液中呈强碱性,可在60℃以下使用。适用于pH为0~14范围的溶液中,可交换一般无机酸根阴离子,也可交换弱酸根阴离子。化学性质稳定,无毒,可燃。
b.制备方法:在苯乙烯、二乙烯苯的混合物中加入一种可与单体互溶但不参加聚合反应的惰性致孔剂,在引发剂的作用下,于65~95℃范围进行悬浮共聚合成珠体。
共聚珠体在傅氏催化剂的作用下,与氯甲醚作用进行氯甲基化反应,氯甲基化珠体与三甲胺进行胺化反应得D201大孔强碱性树脂。
c.产品应用:
(1)D201大孔强碱性阴离子树脂与001×7强酸性阳离子树脂(或D001)强酸性阳离子树脂)等配套使用。
(2)D201MB强碱性苯乙烯阴离子交换树脂与001×7MB阳离子树脂配套组成混床,用于对水进行深度化学除盐。

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