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成型冷却速度即结晶速度对单纯尼龙６和尼龙６合金的拉伸破坏性能具有不同的影响．结晶速度慢，球晶尺寸大，单纯尼龙６的拉伸破坏强度高，破坏形变和破坏能量减小；尼龙６／热塑性聚酰胺弹性体／增容剂合金不仅拉伸破坏强度高，而且破坏形变和破坏能量都有所增加．研究表明，虽然球晶尺寸影响尼龙６的破坏性能，但球晶的性质即球晶的界面上和片晶片晶间的非晶部分结构、微小分散粒子的空洞化及相与相之间的界面结合强度是影响尼龙６破坏性能的主要因素．
The cooling rate of the mold, ie, the crystallization rate, has different effects on the tensile failure properties of pure nylon 6 and nylon 6 alloy. Crystallization slow, spherulite size, pure nylon 6 high tensile failure strength, deformation and failure damage reduction; Nylon 6 / thermoplastic polyamide elastomer / compatibilizer alloy tensile strength is not only high, and Damage and deformation and destruction of energy have increased. The results show that although the spherulite size affects the destructive properties of nylon 6, the properties of spherulites are the structure of the spherulites at the interface of spherulites and the amorphous structure of platelet sheet, the cavitation of finely dispersed particles, The interfacial bonding strength is the main factor that affects the destructive properties of nylon-6.