【摘要】 通过对海藻酸钠与其他胶体间相互作用的研究,将海藻酸钠-明胶作为成胶剂应用在水性仿石涂料中。探讨了胶体间的协同作用,共混胶体的配比以及不同浓度交联剂与胶体的凝胶反应对水性仿石涂料渗色性能的影响,并分析了共混胶体的微观形貌和相互作用机理。结果表明:以海藻酸钠-明胶共混胶体作为水性仿石涂料成胶剂,可以明显改善仿石涂料体系的渗色问题;当交联剂氯化钙浓度为0.05mol/L,成胶剂质量浓度为10g/L,海藻酸钠-明胶共混质量比为7∶3时,仿石涂料体系最稳定,不易渗色。更多还原

【Abstract】 A study of the synergistic interactions between some hydrocolloids and their application in water-based multicolor coatings is reported. The gelling properties of the sodium alginate-gelatine system and the effect of electrolytes have been investigated in detail in order to improve the gel strength of dispersed globules in the coating. The interactions between sodium alginate and gelatine have been investigated by FT-IR spectrometry. The results showed that the sodium alginate-gelatine system had good gelling ability and can give significant improvements in coating performance. The optimum electrolyte concentration is 0.05 mol/L,the optimum gelatinizing agent concentration is 10 g/L,and the optimum ratio of sodium alginate to gelatine is 7:3.更多还原