Advanced Functional Materials·· 11 小时前精选AI 评分58
杨木纤维/剪切增稠凝胶复合材料实现应变速率触发的网络锁定与自适应抗冲击
Strain Rate Triggered Network Locking in Shear‐Stiffening Gel/Wood Fibres Composites for Adaptive Impact Protection
AI 导读
研究将杨木纤维（PFs）网络与剪切增稠凝胶（SSG）复合，构建出界面作用与动态键共同主导的分级互穿结构（PSCs），实现应变速率触发的网络锁定。低应变速率下材料弯曲强度为 58.88 MPa 并保持韧性，高应变速率下单位厚度吸能 2.04 J·mm⁻¹、单位厚度力 377.80 N·mm⁻¹；153.4 m·s⁻¹ 的钢质弹丸撞击后发生反弹。
推荐理由
杨木纤维与剪切增稠凝胶构成的互穿结构在低应变速率下承载、高应变速率下锁网吸能，给出了一组可对照的静态与动态数据。
创新点
把剪切增稠凝胶的应变速率响应与木质纤维网络结合，用应变速率触发网络锁定，使同一材料在低速率下承载、高速率下吸能，缓解刚度与韧性在动态载荷下的固有矛盾。
图表、补充材料与最终表述以原文为准。阅读原文
来源：Advanced Functional Materials · doi.org
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