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首页> 外文期刊>RSC Advances >Lightweight and solution processible thin sheets of poly(o-toluidine)-carbon fiber-novolac composite for EMI shielding
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Lightweight and solution processible thin sheets of poly(o-toluidine)-carbon fiber-novolac composite for EMI shielding

机译：轻质和溶液加工薄薄片聚（o-甲苯胺） - 用于EMI屏蔽的碳纤维 - 酚醛清漆复合材料

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摘要

An attempt has been made to generate lightweight and processible thin sheets of poly (o-toluidine)-carbon fiber (PoTCF) composite for electromagnetic interference shielding. PoTCF composite synthesized by oxidative emulsion polymerization was physically blended with different weight ratios of novolac resin to prepare a new class of composite material, which was further processed to form thin sheets (thickness of similar to 0.85 mm) by a compression moulding technique. In situ incorporation of carbon fiber into the polymer matrix leads to the formation of composites with improved mechanical, thermal, electrical and shielding properties, which were further optimized by varying the amount of novolac resin in the sheets. Structural and morphological studies were carried out by UV-vis, FTIR, XRD and SEM. PoTCF composite sheets with 50 wt% loading of novolac resin have flexural strength of 36.0 MPa and exhibit a shielding effectiveness of 24 dB in the X-band (8.2-12.4 GHz) at a critical thickness of similar to 2.11 mm, which is more than the limit required for techno-commercial applications. Therefore, indigenously fabricated polymer-based sheets would be potentially useful for making durable enclosures for electronic equipment.
机译：已经尝试产生用于电磁干扰屏蔽的轻质和可行的薄片的聚（O-甲苯胺） - 碳纤维（POTCF）复合材料。通过氧化乳液聚合合成的PotCF复合材料与酚醛清漆树脂的不同重量比物理混合，以制备新的复合材料，通过压缩模塑技术进一步加工以形成薄片（厚度为0.85mm）。在原位掺入碳纤维到聚合物基质中导致复合材料的形成，具有改进的机械，热，电和屏蔽性能，通过改变片材中的酚醛清漆树脂的量进一步优化。通过UV-Vis，FTIR，XRD和SEM进行结构和形态学研究。 Potcf复合片材，具有50wt％的酚醛清漆树脂的抗弯曲强度为36.0MPa，在X波段（8.2-12.4GHz）中表现出24 dB的屏蔽效果，其临界厚度类似于2.11毫米，这比技术商业应用所需的限制。因此，本发明制造的聚合物基片可能用于制造用于电子设备的耐用外壳。

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  • 来源
    《RSC Advances》 |2015年第68期|共7页
  • 作者

    Joon Seema; Kumar Rakesh; Singh Avanish Pratap; Shukla Rajni; Dhawan S. K.;

  • 作者单位

    CSIR Natl Phys Lab Polymer &

    Soft Mat Sect New Delhi 110012 India;

    CSIR Natl Phys Lab Polymer &

    Soft Mat Sect New Delhi 110012 India;

    CSIR Natl Phys Lab Polymer &

    Soft Mat Sect New Delhi 110012 India;

    DCRUST Murthal Dept Phys Sonepat 130001 Haryana India;

    CSIR Natl Phys Lab Polymer &

    Soft Mat Sect New Delhi 110012 India;

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  • 正文语种 eng
  • 中图分类 化学;
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