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首页> 外文期刊>Journal of Applied Polymer Science >Synthesis and characterization of phenolic resol resin blended with silica sol and PVA
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Synthesis and characterization of phenolic resol resin blended with silica sol and PVA

机译：硅溶胶与PVA共混的酚醛酚醛树脂的合成与表征

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摘要

The phenolic resol resin (PF) has a wide application in industry, but its poor tensile ductility and insufficient mechanical strength have severely limited its application. To overcome these limitations, in this study, the mixtures of silica sol and poly(vinyl acohol) (PVA) were used to modify the PF. The structure, morphology, mechanical properties, and thermal stability of these hybrid materials were investigated by FTIR, SEM, tensile shear test (TSS), and TG. FTIR spectra indicated that the multiple reactive functional silanol group Si-OH on the surface of SiO_2 particles reacted with PVA and PF. Compared with pure PF, the composite 50-50-3% exhibited the maximum shear strength which increased by 158%, whereas the elongation at break increased by 63%. Morphological results agreed well with the mechanical properties. The TG results suggested that the composite material 50-50-3% and pure PF had almost the same thermal stability because silica sol and PVA had opposite effects on the heat resistance of the hybrid materials.
机译：酚醛酚醛树脂（PF）在工业上具有广泛的应用，但是其拉伸延展性差和机械强度不足严重限制了其应用。为了克服这些局限性，在这项研究中，硅溶胶和聚乙烯醇（PVA）的混合物被用来改性PF。通过FTIR，SEM，拉伸剪切试验（TSS）和TG研究了这些杂化材料的结构，形态，力学性能和热稳定性。 FTIR光谱表明，SiO_2颗粒表面的多反应性官能硅烷醇基Si-OH与PVA和PF反应。与纯PF相比，复合材料50-50-3％的最大剪切强度增加了158％，而断裂伸长率增加了63％。形态学结果与机械性能非常吻合。 TG结果表明，复合材料50-50-3％和纯PF具有几乎相同的热稳定性，因为硅溶胶和PVA对杂化材料的耐热性具有相反的影响。

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