High Degree Of Polymerization Of Ammonium Polyphosphate (app), The Degree Of Polymerization Of Analysis Method

Ammonium polyphosphate is a good flame retardant,and use as an important ingredient for providing fire retardancy to many organic polymers.The degree of polymerization qualifies the ammonium polyphosphate applicable range,is an important chemic and physical parameter.For the properties of ammonium polyphosphate,make the high degree of polymerization ammonium polyphosphate degree of polymerization determination hard.So it' s necessary to find a more accurate method for determined the polymerization degree of high degree of polymerization ammonium polyphosphate.Through experiments confirmed the existingly end-group titration isn't suitable for to determine the polymerization degree of the higher polymerization degree ammonium polyphosphate.Concluded by experiencing the method is viable that can educe the ammonium polyphosphate degree of polymerization approximately by the solubility in water.Through researching the viscosity of ammonium polyphosphate,draw the conclusion that through determine the viscosity ammonium polyphosphate of water solution can know the ammonium polyphosphate degree of approximate polymerization.Adopted determine the thermodynamic property,apparent density,total phosphorus,total nitrogen and crystalline form,and sought the relationship between the ammonium polyphosphate degree of polymerization and the result.Come to a conclusion that it' s not certain whether there is a strong correlation between them under the existing experiment condition.This research will provide much new idea and way for the research about of the ammonium polyphosphate property.And also provide a low cost, simple and convinent method determined the polymeric degree of ammonium polyphosphate.