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工艺对PBS纤维的特性和结构的影响

Hao Liu¹, Hui Li¹, Zexu Hu¹

¹State Key Laboratory of Advanced Fiber Materials, Center for Advanced Low-dimension Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China.

|May 14, 2025

概括

这项研究通过优化旋转温度和速度来增强聚乙烯酸 (PBS) 纤维的强度. 更高的线速度和受控的温度产生更强的PBS预定向线 (PBS-POY),具有更好的结构性质.

科学领域:

聚合物科学聚合物科学
材料科学材料科学材料科学
织工程织工程织工程

背景情况:

聚乙烯酸盐 (PBS) 是一种生物基聚合物,具有广泛的应用.
低强度和大量球状石的形成限制了PBS在纤维线中的作用.
提高PBS纤维强度对于扩大其使用至关重要.

研究的目的:

为了研究旋转温度和速度对PBS预定向 (PBS-POY) 属性的影响.
了解结构演变和机械性能增强机制.
为了揭示在PBS纤维上线和绘制过程的协同效应.

主要方法:

对PBS-POY.旋转温度和速度对PBS-POY.旋转速度的影响进行系统调查.
分析机械性能,热行为和凝结状态结构.
在最大拉动条件下检查预定向线.

主要成果:

降低旋转温度和增加旋转速度改善了纤维的机械性能.
在最佳条件 (195°C,2500 m/min) 中,PBS-POY具有2.09 cN/dtex的抗拉强度.
更高的旋转速度导致更小,更多的球状岩,在绘制时被精制成均的板状.

结论:

优化线参数显著提高PBS纤维强度和结构完整性.
更高的旋转速度导致更小的晶体大小,增加晶体性和更好的方向.
该研究揭示了一种通过协同螺旋-拉动过程来调节结构性能的机制,导致最终纤维具有提高的机械强度,最高可达2.72cN/dtex.

关键词:

在PBS预定向线.叶片状的叶片是拉米拉.机械性能机械性能机械性能球状物质是球状物质中的一种.工艺工艺工艺

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