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Injection moldable rate stiffening re‐entrant cell arrays for wearable impact protection
Polymer Engineering and Science ( IF 3.2 ) Pub Date : 2020-04-24 , DOI: 10.1002/pen.25400
Daniel Plant 1 , Patrick Leevers 1
Affiliation  

The rigid cellular materials widely used for personal impact protection can be effective but tend to be inconveniently thick, and to be less effective after a first impact. A macroscopically structured panel material, molded as a two‐dimensional matrix of re‐entrant cells, has been specifically designed and optimized for body‐worn protection. These panels are injection molded from a blend of rate‐stiffening polyborodimethylsiloxane with a thermoplastic elastomer, optimized to minimize the impact force transmitted to the anvil in standard drop‐weight tests even as monolithic slab specimens. The concurrently designed, impact‐protective molded panels offer equivalent protection in thinner, lighter, and more wearable layers. Their re‐entrant cellular structure and rate‐stiffening material allow them to conform easily to individual wearers and to allow free movement at normal rates, while offering enhanced protection under one or more impacts at the same location.

中文翻译:

可注射成型的速率强化凹入式电池阵列,可穿戴式冲击防护

广泛用于个人撞击保护的硬质蜂窝材料可能是有效的,但往往会带来不便的厚度,并且在第一次撞击后效果会更差。专门设计和优化了宏观结构的面板材料,模制为可折返细胞的二维矩阵,可保护身体免受磨损。这些面板是由速率增强型聚硼二甲基硅氧烷与热塑性弹性体的混合物注塑而成的,经过优化可将传递至砧的冲击力减至最小,即使是整块的平板试样也可通过标准的落锤测试获得。同时设计的抗冲击模塑板在更薄,更轻和更耐磨的层中提供了相同的保护。
更新日期:2020-04-24
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