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Balanced physical properties for thermoplastic silicone vulcanizate‐based polymer composites containing functional filler
Polymer Composites ( IF 4.8 ) Pub Date : 2020-07-06 , DOI: 10.1002/pc.25713 Qinjun Pan 1 , Guojie Zhao 1 , Hua Deng 1 , Qiang Fu 1
Polymer Composites ( IF 4.8 ) Pub Date : 2020-07-06 , DOI: 10.1002/pc.25713 Qinjun Pan 1 , Guojie Zhao 1 , Hua Deng 1 , Qiang Fu 1
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Thermoplastic vulcanizates (TPVs) based on silicone rubber (SiR) and thermoplastic polyurethane (TPU), as a class of thermoplastic elastomers (TPEs), are extensively applied in various fields due to their excellent performance such as remarkable mechanical properties, easy processability, recyclability, and so on. However, it is quite difficult to incorporate functional fillers into thermoplastic silicone vulcanizate (TPSiV) without largely influencing their mechanical performance due to the rather high content of SiR and delicate balance between structure and properties. Herein, some efforts are made to introduce functional filler such as multiwall carbon nanotubes (MWCNTs) into TPSiVs. It is illustrated that with increasing MWCNTs loading in TPSiV from 0 to 5 wt%, the percolation threshold was achieved when the content of MWCNTs was 2%. Nevertheless, the tensile strength decreases from 3.95 to 1.84 MPa and elongation at break decreases from 260% to 25.6%, respectively. To fabricate TPSiV/carbon nanotubes (CNTs) composites with balanced properties, TPU based on polyester and hydrophobic silicon dioxide (SiO2) nanoparticles were introduced into these materials to enhance the mechanical properties. Through this method, TPSiV/TPU/SiO2/CNTs composites with different levels of electrical conductivity, while maintaining good mechanical properties and processability were fabricated. It is illustrated that TPU could provide extra space for the distribution of MWCNTs and SiO2 could strength these polymer blends. Such method is thought to provide an effective route for the preparation of functional polymer composites based on TPSiV.
中文翻译：
含有功能性填料的热塑性有机硅硫化橡胶基聚合物复合材料的平衡物理性能
基于硅橡胶（SiR）和热塑性聚氨酯（TPU）的热塑性硫化橡胶（TPV），作为热塑性弹性体（TPE）的一类，由于其卓越的性能（例如卓越的机械性能，易加工性，可回收性）而被广泛应用于各个领域。 ， 等等。然而，由于相当高的SiR含量和结构与性能之间的精细平衡，很难在不显着影响其机械性能的情况下将功能性填料掺入热塑性有机硅硫化橡胶（TPSiV）中。在此，做出了一些努力以将诸如多壁碳纳米管（MWCNT）的功能性填料引入TPSiV。结果表明，随着TPSiV中MWCNTs负载的增加（从0至5 wt％），当MWCNTs的含量为2％时，达到了渗滤阈值。但是，抗拉强度从3.95 MPa降低到1.84 MPa，断裂伸长率从260％降低到25.6％。为了制造具有平衡特性的TPSiV /碳纳米管（CNT）复合材料，基于聚酯和疏水性二氧化硅（SiO）的TPU2）将纳米颗粒引入这些材料中以增强机械性能。通过这种方法，制备了具有不同导电率的TPSiV / TPU / SiO 2 / CNTs复合材料，同时保持了良好的机械性能和加工性能。说明了TPU可以为MWCNT的分布提供额外的空间，而SiO 2可以增强这些聚合物共混物的强度。该方法被认为为制备基于TPSiV的功能性聚合物复合材料提供了有效途径。
更新日期：2020-07-06
中文翻译：
含有功能性填料的热塑性有机硅硫化橡胶基聚合物复合材料的平衡物理性能
基于硅橡胶（SiR）和热塑性聚氨酯（TPU）的热塑性硫化橡胶（TPV），作为热塑性弹性体（TPE）的一类，由于其卓越的性能（例如卓越的机械性能，易加工性，可回收性）而被广泛应用于各个领域。 ， 等等。然而，由于相当高的SiR含量和结构与性能之间的精细平衡，很难在不显着影响其机械性能的情况下将功能性填料掺入热塑性有机硅硫化橡胶（TPSiV）中。在此，做出了一些努力以将诸如多壁碳纳米管（MWCNT）的功能性填料引入TPSiV。结果表明，随着TPSiV中MWCNTs负载的增加（从0至5 wt％），当MWCNTs的含量为2％时，达到了渗滤阈值。但是，抗拉强度从3.95 MPa降低到1.84 MPa，断裂伸长率从260％降低到25.6％。为了制造具有平衡特性的TPSiV /碳纳米管（CNT）复合材料，基于聚酯和疏水性二氧化硅（SiO）的TPU2）将纳米颗粒引入这些材料中以增强机械性能。通过这种方法，制备了具有不同导电率的TPSiV / TPU / SiO 2 / CNTs复合材料，同时保持了良好的机械性能和加工性能。说明了TPU可以为MWCNT的分布提供额外的空间，而SiO 2可以增强这些聚合物共混物的强度。该方法被认为为制备基于TPSiV的功能性聚合物复合材料提供了有效途径。
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