Polyamide 1010 (PA1010) is a representative of long-chain polyamides, used in applications requiring good mechanical, thermal and chemical properties. It has a lower melting point and slightly higher flexible properties compared to nylon 66. Very few reports have been focused on the structures and properties of long-chain polyamides, which brings some troubles on their processing and applications. For the purpose of understanding mechanical changes within different temperature interval, dynamic structure transition of PA1010 was investigated by wide-angle X-ray diffractometer (WAXD) equipped with a hot stretching stage. During the process of the simultaneous thermal stretched, in addition to the Brill transition phenomenon, it was also accompanied by changes in crystallinity, orientation and tensile force. Both annealing and stretching can promote crystallization, in addition, stretching can also induce and destroy crystallization. With stretch ratios increasing, the crystallinity increases firstly, reaches the maximum when stretch ratio is 2.25 times and then decreases. The degree of orientation increase firstly but increase poorly after 2.50 times. The stretch force increase gradually too. The stretch force has a stronger ability than temperature to induce the PA1010 undergo the Brill transition. The presented results show that Brill transition is completed and the α-crystal structure completely transformed into γ-crystal structure when the stretch ratio is 2.50 times.

聚酰胺1010（PA1010）是长链聚酰胺的代表，用于需要良好机械，热和化学性能的应用中。与尼龙66相比，它的熔点更低，柔韧性稍高。关于长链聚酰胺的结构和性能的报道很少，这给它们的加工和应用带来了麻烦。为了了解不同温度区间内的机械变化，通过配备热拉伸台的广角X射线衍射仪（WAXD）研究了PA1010的动态结构转变。在同时热拉伸的过程中，除了布里尔（Brill）转变现象外，还伴有结晶度，取向和拉伸力的变化。退火和拉伸都可以促进结晶，此外，拉伸还可以诱导和破坏结晶。随着拉伸比的增加，结晶度首先增加，当拉伸比为2.25倍时达到最大，然后降低。取向度首先增加，但在2.50倍后增加不佳。拉伸力也逐渐增加。拉伸力具有比温度强的能力，以引起PA1010经历布里尔转变。结果表明，当拉伸倍率为2.50倍时，布里尔相变完成，α晶体结构完全转变为γ晶体结构。当拉伸比为2.25倍时达到最大值，然后降低。取向度首先增加，但在2.50倍后增加不佳。拉伸力也逐渐增加。拉伸力具有比温度强的能力，以引起PA1010经历布里尔转变。结果表明，当拉伸倍率为2.50倍时，布里尔相变完成，α晶体结构完全转变为γ晶体结构。当拉伸比为2.25倍时达到最大值，然后降低。取向度首先增加，但在2.50倍后增加不佳。拉伸力也逐渐增加。拉伸力具有比温度强的能力，以引起PA1010经历布里尔转变。结果表明，当拉伸倍率为2.50倍时，布里尔相变完成，α晶体结构完全转变为γ晶体结构。