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首页> 外文期刊>Journal of Applied Polymer Science >Synthesis and characterization of unsaturated polyester/carborundum composites
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Synthesis and characterization of unsaturated polyester/carborundum composites

机译：不饱和聚酯/金刚砂复合材料的合成与表征

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摘要

Two unsaturated polyesters, one based on phthalic anhydride PEP and the other based on isophthalic acid PE_I, were synthesized. The chemical structure of the two polyesters was characterized by IR and ~1H and ~(13)C NMR spectroscopy. The effect of styrene concentration on the curing of polyesters was also studied. It has been found that the percent of polyester/styrene (70/30 wt %) gave the highest percent of curing. Different concentrations of carborundum (0-70 wt %) were used to prepare polyester composites. A comparative study was done on the properties of the two prepared polyesters PE_P and PE_I and their composites in term of their thermal, mechanical, electrical, and physical properties. The results indicate that the polyester based on isophthalic acid (PE_I) and its composites gave higher compressive strength values and lower water absorption than those based on phthalic anhydride (PE_P). The presence of carborundum improved the thermal stability than the cured polyesters and electrical properties.
机译：合成了两种不饱和聚酯，一种基于邻苯二甲酸酐PEP，另一种基于间苯二甲酸PE_I。两种聚酯的化学结构通过IR和〜1H和〜（13）C NMR光谱表征。还研究了苯乙烯浓度对聚酯固化的影响。已经发现，聚酯/苯乙烯的百分比（70/30重量％）给出了最高的固化百分比。使用不同浓度的金刚砂（0-70 wt％）来制备聚酯复合材料。对两种制备的聚酯PE_P和PE_I及其复合材料的热，机械，电和物理性能进行了比较研究。结果表明，与基于邻苯二甲酸酐（PE_P）的聚酯相比，基于间苯二甲酸（PE_I）的聚酯及其复合材料具有更高的抗压强度值和更低的吸水率。金刚砂的存在改善了比固化聚酯的热稳定性和电性能。

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