[关键词]
[摘要]
面向先进热力循环中泵体连接架的轻质高强与振动控制需求,开展了微米级云母粉掺杂对环氧基碳纤维增强复合材料(CFRPs)力学与减振性能影响规律的研究。基于热固性环氧树脂基体,引入云母粉重量分数为0、2、4、6、8、10 wt.%的配方体系制备CFRPs层压板,通过力学性能测试与振动衰减特性表征评估材料的承载能力与阻尼水平。本研究形成了面向泵体连接架选材的“掺杂量-力学/阻尼”关联关系,并给出了相应的参数优化区间。结果表明,CFRPs的机械强度与阻尼比随云母粉含量增加呈现先升高后降低的变化趋势。S2试样(云母粉添加量为2 wt. %)的拉伸强度最高,相较于S1试样(未添加云母粉)提升了6.3%。S3试样(云母粉添加量为4 wt. %)的弯曲强度最高,相较于S1试样提升了27.97%。S5试样(云母粉添加量为8 wt. %)的阻尼比最大,相较于S1试样提升了250.51%。
[Key word]
[Abstract]
To satisfy the lightweight, high-strength, and vibration-control requirements of pump connecting frames in advanced thermodynamic cycles, the effects of micron-sized mica powder on the mechanical and damping performance of epoxy-based carbon-fiber-reinforced polymers (CFRPs) laminates were investigated. Laminates containing 0, 2, 4, 6, 8, and 10 wt.% mica were fabricated and evaluated via mechanical testing and vibration-decay characterization to establish a mica-content-property relationship. Mechanical strength and damping ratio showed a non-monotonic trend, increasing at low contents and decreasing at higher contents. The 2 wt.% laminate achieved the highest tensile strength (6.3% above unfilled), the 4 wt.% laminate the highest flexural strength (27.97% above unfilled), and the 8 wt.% laminate the maximum damping ratio (250.51% above unfilled).
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[基金项目]
教育部产学合作协同育人项目(220504132255709);湖北省科技创新人才计划(2025DJA086);大连理工大学研究生教育教学改革研究项目(JG2024056)。