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首页> 外文期刊>Journal of Applied Polymer Science >Accelerated weathering behavior of castor oil bio-based thermosets
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Accelerated weathering behavior of castor oil bio-based thermosets

机译：加速蓖麻油生物热固性件的耐候性

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摘要

Bio-based thermosets based on vegetable oils are promissory materials due to their good performance, renewability and biodegradability. In this work, accelerated weathering tests were performed over bio-based thermosets obtained from castor oil to evaluate the long-term performance under environmental conditions. The thermosets were obtained through homopolymerization or copolymerization with styrene of maleated castor oil methacrylate. The changes in chemical and physical properties were monitored by Fourier-transform infrared spectroscopy (FTIR), color measurements, scanning electron microscopy (SEM) and proton nuclear magnetic resonance ((HNMR)-H-1). Both materials showed evidences of chemical changes, such as formation of double bonds and hydroxyl groups, as well as the decomposition of carbonyl ester groups. The observed physical changes were discoloration as well as the formation of cracks and blistering. However, the degradation phenomena were less severe in the copolymer due to the high stability of styrene moieties.
机译：由于其良好的性能，可再生性和生物降解性，基于植物油的生物基热固性件是原因。在这项工作中，通过从蓖麻油获得的生物基热固性能量进行加速风化试验，以评估环境条件下的长期性能。通过与马来酸蓖麻油甲基丙烯酸酯的苯乙烯通过均聚物或共聚获得热固性。通过傅里叶变换红外光谱（FTIR），颜色测量，扫描电子显微镜（SEM）和质子核磁共振（（HNMR）-H-1）进行化学和物理性质的变化。两种材料显示出化学变化的证据，例如形成双键和羟基，以及羰基酯基的分解。观察到的物理变化是变色，也是裂缝和起泡的形成。然而，由于苯乙烯部分的高稳定性，共聚物中的降解现象不太严重。

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