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为改善LPFR(低溶解度酚醛树脂)在低矿化度水中的分散稳定性,以HAP(疏水缔合聚合物)作为LPFR的稳定剂,并测定了分散体系在去离子水或NaCl溶液中的流体力学直径(Dh)、Zeta电位、浊度及稳定时间。结果表明:当LPFR水溶液浓度为300 mg/L时,LPFR以单分子或较小的分子聚集体形式存在于去离子水中,Zeta电位较高、浊度较小且稳定性良好;加入NaCl后,LPFR形成了较大的分子聚集体,Zeta电位降低、浊度增大且稳定性变差;引入HAP后,LPFR/HAP因疏水缔合作用而形成了Dh较小的复合分子聚集体,其Zeta电位较大,浊度明显降低,稳定性增强;HAP能明显改善LPFR在NaCl溶液中的分散特性及稳定性。
In order to improve the dispersion stability of LPFR (low-solubility phenol resin) in low salinity water, HAP (Hydrophobically Associating Polymer) was used as the stabilizer of LPFR and the fluid of the dispersion in deionized water or NaCl solution was measured Mechanical Diameter (Dh), Zeta Potential, Turbidity and Stabilization Time. The results showed that when LPFR aqueous solution concentration was 300 mg / L, LPFR was present in deionized water as single molecule or smaller molecular aggregate with higher Zeta potential, less turbidity and good stability. After addition of NaCl, LPFR formed larger molecular aggregates, the Zeta potential decreased, turbidity increased and the stability deteriorated. After the introduction of HAP, LPFR / HAP due to hydrophobic association formed small Dh composite molecular aggregates, the Zeta Potentiation is larger, turbidity is obviously reduced and stability is enhanced. HAP can obviously improve the dispersion and stability of LPFR in NaCl solution.