Borić Andrej, Kalendová Alena, Urbanek Michal, Pepelnjak Tomaž
Faculty of Engineering, University of Rijeka, Vukovarska 58, 51 000 Rijeka, Croatia.
Faculty of Technology, Tomas Bata University in Zlin, Vavrečkova 275, 760 01 Zlin, Czech Republic.
Polymers (Basel). 2019 Jul 28;11(8):1248. doi: 10.3390/polym11081248.
In this paper, the preparation and characterisation of polymer materials suitable for single point incremental forming (SPIF) technology were performed. Three different kinds of mixtures were selected: a mixture of neat polyamide 12 (PA12), a nanocomposite with PA12 matrix and 1% clay (Cloisite 93A), and a nanocomposite with PA12 matrix and 3% clay (Cloisite 93A). Materials were produced using a melt intercalation method followed by compression moulding. According to the needs of SPIF technology, morphological and mechanical properties were investigated in the obtained mixtures. Transmission electron microscopy (TEM) and X-ray diffraction (XRD) were used to characterize morphological properties. It was determined that the most desired obtained exfoliated structure of clay in the polymer matrix was achieved. Static tensile testing and dynamic mechanical analysis as well as the determination of glass transition temperature and crystallinity of all analysed materials were used to obtain mechanical and thermal properties of the mixtures. The results obtained for each mixture were compared with respect to the content of clay. The content of clay (Cloisite 93A) showed a strong influence on the properties of the obtained materials. The presence of clay (Cloisite 93A) affected the increase of tensile strength and Young's modulus, while its influence on the attained elongation was not unique.
本文对适用于单点渐进成形（SPIF）技术的聚合物材料进行了制备和表征。选择了三种不同的混合物：纯聚酰胺12（PA12）、PA12基体与1%粘土（Cloisite 93A）的纳米复合材料以及PA12基体与3%粘土（Cloisite 93A）的纳米复合材料。采用熔体插层法随后进行模压成型来制备材料。根据SPIF技术的需求，对所得混合物的形态和力学性能进行了研究。使用透射电子显微镜（TEM）和X射线衍射（XRD）来表征形态性能。确定在聚合物基体中获得了最理想的粘土剥离结构。通过静态拉伸试验、动态力学分析以及对所有分析材料的玻璃化转变温度和结晶度的测定来获得混合物的力学和热性能。针对每种混合物所获得的结果根据粘土含量进行了比较。粘土（Cloisite 93A）的含量对所得材料的性能有很大影响。粘土（Cloisite 93A）的存在影响了拉伸强度和杨氏模量的提高，而其对伸长率的影响并不单一。
