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2020-11-8離子交換樹脂的各項介紹
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2020-11-7說說D001大孔強酸性陽離子交換樹脂的物理結構
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2020-11-6D301大孔弱堿性陰離子交換樹脂的交換容量介紹
螯合樹脂D408
D408螯合樹脂具有亞胺基二乙酸基螯合基因，對金屬離子的選擇性類同于EDTA，選擇性次序為：
Hg＞Cu＞Pb＞Ni＞Cd＞Zn＞Co＞Mn＞Ca＞Mn＞Ca＞Mg＞Ba＞Sr＞Na當溶液中共存有一價和二價金屬離子時，D408螯合樹脂選擇性地交換吸附二價金屬離子，顯示出對二價金屬離子的高選擇性、高親和力。同時，被交換吸附的二價金屬離子在低PH值的溶液中很容易地解吸，使螯合基因重新恢復交換吸附的功能，正是這種優良的化學特性，賦于D408螯合樹脂具有反復應用和廣泛的用途。
D408螯合樹脂的主要物化性能:
樹脂母體： 大孔苯—二乙烯苯共聚球體。
螯合功能基因： 亞胺基二乙酸基｛-CH2N—（CH2NCOONa）2｝
交換容量： （CU2+動態法）≥0.6mmolml-R-Na
穩定性： 對酸堿、溶劑穩定用于精制二次鹽水時要求無游離氯。
外觀： 淺黃色至灰褐色不透明球狀顆粒。
濕視密度： 0.70～0.80g/m
濕真比重:（20℃）： 1.10～1.20
粒徑范圍： 0.30～1.20mm
?！ 剑?nbsp; 0.35～0.55mm
均勻系數： ＜1.7
含水量： 50～62%
PH值： 精制二次鹽水9.0±0.5，用于回收金屬離子不同而異。
體積變化： 在水中：R-H/R-Na=0.75
膨脹度： ＜25%
出廠型式： Na型
D408 chelating resin with iminodiacetic acid-based chelating gene, the metal ion selectivity similar to EDTA, selective order:
Hg> Cu> Pb> Ni> Cd> Zn> Co> Mn> Ca> Mn> Ca> Mg> Ba> Sr> Na
When the solution of the CPC there are monovalent and divalent metal ions chelate resin selectively D408 divalent metal ion exchange adsorption, showing the high selectivity of the divalent metal ion, a high affinity. At the same time, the divalent metal ion exchange adsorption in the low PH value of the solution easily desorption (regeneration) the chelate gene resume function of the exchange adsorption, excellent chemical properties, confers D408 chelation the resin has repeated applications and a wide range of uses.
D408 chelating resin main physical and chemical properties:
The resin matrix: macroporous styrene - divinylbenzene copolymer sphere.
Chelating functional genes: iminodiacetic acid base {-CH2N-(CH2NCOONa) 2}
Exchange capacity: ≥ the 0.6mmolml-R-Na (Cu2 + dynamic method)
Stability: pH, organic solvent stability requirements for refined secondary brine no free chlorine.
Appearance: light yellow to gray-brown opaque spherical particles.
Wet apparent density: 0.70 to 0.80 g / m
Wet true specific gravity: (20 ° C): 1.10 to 1.20
Particle size range: 0.30 to 1.20mm
The valid particle size: 0.35 to 0.55mm
Uniformity coefficient: <1.7
Moisture content: 50 to 62%
PH: refined secondary brine 9.0 ± 0.5, for the recovery of metal ions varies.
Volume change: in water: R-H/R-Na = 0.75
Degree of swelling: <25%
Factory pattern: Na type
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