摘要
以氯化钙为络合剂,将聚酰胺6(PA6)粉末与氯化钙溶解在甲酸/氯仿混合溶剂中制得冻胶样品,研究了PA6/氯化钙/甲酸冻胶体系的流变性能,以及温度、PA6的相对黏度、CaCl2与PA6的摩尔比和PA6的质量分数对冻胶的ηa-γ觶流变曲线、非牛顿指数和结构黏度指数的影响。结果表明:冻胶溶液属于宾汉流体,具有明显的非牛顿性;体系的表观黏度随着温度的升高而降低,随PA6的质量分数的升高、络合剂CaCl2与PA6的摩尔比的增大或PA6的相对黏度增大而增大;溶液的结构黏度指数随温度的升高而减少,随溶液PA6的相对黏度的升高或PA6的质量分数的升高而增大。
Polyamide 6 （PA6） gels were prepared by dissolving PA6 powder in formic acid using CaCl2 as complex agent. The rheological behavior of PA6/CaCl2/HCOOH gel system was studied, as were the effects of temperature, PA6 relative viscosity, mole ratio of PA6 unit/CaCl2 and mass percentage of PA6 on ηa-γ rheologie curve, non-Newtonian index and structural viscosity index of gel. The results showed that PA6 unit/CaCl2/HCOOH gel belonged to Bingham fluid and showed distinct non-Newtonian behavior. The apparent viscosity of the solution decreased with the elevation of temperature, and increased with the increasing of mass percentage of PA6, mole ratio of PA6/CaCl2 or PA6 relative viscosity. The structural viscosity index was increased while increasing PA6 relative viscosity or mass percentage of PA6, and was decreased while increasing of gel temperature.
出处
《合成纤维》
CAS
2010年第3期17-21,26,共6页
Synthetic Fiber in China
基金
国家自然科学基金项目(50803001)
北京市自然基金项目(No.2092012)
北京市科技新星计划项目(No.2008B06)
引进人才科研项目(2008A-3)
关键词
超高相对分子质量PA6
氯化钙
络合
冻胶
流变行为
ultrahigh molecular weight polyamide 6, calcium chloride, complexation, gel, rheological behavior
