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日本帝人为汽车碰撞箱提供新型碳纤维增强热塑性塑料
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日本帝人有限公司(Teijin)正在为汽车碰撞箱结构提供其Sereebo型碳纤维增强热塑性塑料(CFRTP),该材料主要作为传统钢和铝的替代品。汽车碰撞箱是一种在发生碰撞时保护汽车乘客的结构部件。

Sereebo能够以随机取向的板材形式自由压模,其中碳纤维丝束会以随机取向进行分布。在每克70焦耳的情况下,该碳纤维增强热塑性材料的减震能力是传统钢的4-5倍,是铝或传统碳纤维增强热固性塑料(CFRP)的2-3倍。

据悉,这种材料有助于进行彻底的工程设计,首先它将根据模拟预测生成目标产品的形状,然后进行实际碰撞试验以提供可融入到设计中的有效数据。此外,它的厚度可以很容易地改变,从而实现冲击时反作用力的有效控制,而这也有助于优化设计。目前可用等级材料中碳纤维的体积分数(Vf)为35%。

Sereebo是专为汽车材料等应用而开发的,具有较高的制造生产率,只需约一分钟即可形成一个部件。其卓越的物理性能和延展性使其被通用汽车公司用于皮卡车床的制造。

然而,由于该材料是车辆碰撞箱领域的新材料之一,因此在本应用中对其进行评估将需要一些时间,因为在寻求成本和性能之间的平衡时,有可能会对材料及其成型进行调整。

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