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首页> 外文期刊>Journal of Materials Engineering and Performance >Studies on Thermal and Mechanical Properties of Epoxy-Silicon Oxide Hybrid Materials
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Studies on Thermal and Mechanical Properties of Epoxy-Silicon Oxide Hybrid Materials

机译：环氧-氧化硅杂化材料的热力学性能研究

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摘要

Ultrasonic dual mixing (UDM) process involving ultrasonic vibration with simultaneous stirring is used to prepare epoxy-silicon oxide hybrid materials with inorganic nanoscale building blocks by incorporating nanoscale silicon oxide network in epoxy matrix. The silicon oxide network is obtained from tetraethoxysilane (TEOS) by using the in situ sol-gel process. Same epoxy-silica hybrid materials were also prepared by mixing with simple impeller stirring, and its properties were compared with the material of same composition prepared by the UDM process. The epoxy-silicon oxide hybrid materials are characterized by using FT-IR, DSC, FESEM, and XRD techniques. The glass transition temperature, tensile strength, and elastic modulus of the epoxy-silicon oxide hybrid materials treated by UDM process are found comparatively better than those of the materials processed by a rotating impeller. FESEM studies confirm that amount of TEOS varies the distribution and size of silicon oxide network, which remains relatively finer at lower content of TEOS. Significant improvement of thermal and mechanical properties of the neat epoxy is noted in the presence of 3.05 wt.% TEOS content in it is giving rise to the formation of inorganic building block of silicon oxide of size 88 +/- 45 nm in the matrix. In this regard, the use of UDM process is found superior to mixing by simple impeller stirring for enhancement of properties of epoxy-silicon oxide hybrid materials. Lowering of properties of the epoxy-silicon oxide hybrid materials with TEOS addition beyond 3.05 wt.% up to 6.1 wt.% occurs primarily due to increase of amount and size (up to 170 +/- 82 nm) of the inorganic building block in the matrix.
机译：通过将纳米级氧化硅网络并入环氧树脂基体中，使用涉及超声波振动并同时搅拌的超声双重混合（UDM）工艺来制备具有无机纳米级结构单元的环氧-氧化硅杂化材料。通过使用原位溶胶-凝胶工艺从四乙氧基硅烷（TEOS）获得氧化硅网络。还通过简单的叶轮搅拌混合来制备相同的环氧-二氧化硅杂化材料，并将其性能与通过UDM工艺制备的相同组成的材料进行比较。通过使用FT-IR，DSC，FESEM和XRD技术来表征环氧-氧化硅杂化材料。发现通过UDM工艺处理的环氧-氧化硅杂化材料的玻璃化转变温度，拉伸强度和弹性模量比旋转叶轮处理的材料要好。 FESEM研究证实，TEOS的量会改变氧化硅网络的分布和大小，而在较低的TEOS含量下，其仍相对较细。在存在3.05重量％的TEOS含量的情况下，注意到纯环氧树脂的热和机械性能的显着改善，这导致在基质中形成尺寸为88 +/- 45nm的氧化硅的无机结构单元。在这方面，发现UDM工艺的使用优于通过简单的叶轮搅拌来混合，以增强环氧-氧化硅杂化材料的性能。添加TEOS超过3.05 wt。％至6.1 wt。％会降低环氧-氧化硅杂化材料的性能，这主要是由于无机结构单元的数量和尺寸（高达170 +/- 82 nm）增加所致。矩阵。

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