聚对苯二甲酰对苯二胺

本文用电位滴定法直接测定了聚对苯二甲酰对苯二胺（PPTA）的羧端基含量。

The application of potentiometric titration has effected a direct determination of the carboxyl end-groups of poly ( paraphenylene terephthalamide ) & PPTA .

凝胶色谱法测定聚对苯二甲酰对苯二胺（PPTA）的分子量和分子量分布第二部分：应用

Determination of molecular weight and molecular weight distribution of poly ( 1,4-phenylene erephthalamide ) & ppta by gel permeation chromatography part ⅱ: application

采用光散射方法研究了聚对苯二甲酰对苯二胺（PPTA）浓硫酸溶液于不同凝固条件下成膜时得到的球晶和草席晶等结构。

The morphology of spherulite and mat-crystal structure in PPTA films coagulated from pure sulfuric acid solutions under different conditions has been studied by light scattering method .

聚对苯二甲酰对苯二胺（Poly（para-PhenyleneTerephthalamide），PPTA）浆粕具有PPTA纤维许多优异的物理机械性能同时，有更强的复合效果，被广泛应用于摩擦、密封、增强材料等领域。

Poly ( para-Phenylene Terephthalamide ) ( PPTA ) pulps have excellent properties as reinforced materials besides having kept many merits of PPTA fibers and have been used widely in the fields of friction , sealed and composite materials .

裂解气相色谱法研究聚对苯二甲酰对苯二胺纤维热分解

Thermal Decomposition of Poly ( p-phenylene terephthalamide ) by Pyrolysis Gas - chromatography