首页> 外文期刊>Journal of Applied Polymer Science >Phenolic foams modified by cardanol through bisphenol modification
【24h】

Phenolic foams modified by cardanol through bisphenol modification

机译:腰果酚通过双酚改性的酚醛泡沫

获取原文
获取原文并翻译 | 示例
           

摘要

In this study, cardanol, a natural phenol, has been applied to toughen phenolic foam by bisphenol modification. In order to verify the occurrence of Friedel-Craft alkylation between cardanol and phenol on the side chain, FTIR, and NMR had been used to characterize the bisphenol successfully. With the introduction of cardanol, the viscosity of prepolymers increased. The SEM results demonstrated that the some cells with increasingly large size existed, when the dosage of cardanol increased. With respect to the mechanical properties, phenolic foams modified by 10 wt % cardanol increased by 22% in flexural strength and 28% in bending modulus compared to pure phenolic foams, which indicates that the incorporation of cardanol does improve the toughness of phenolic foams. In addition, the effects of different dosage of cardanol on the apparent density and thermal stability of phenolic foams were investigated.
机译:在这项研究中,腰果酚(一种天然酚)已通过双酚改性应用于增韧酚醛泡沫。为了验证腰果酚和侧链上的酚之间存在Friedel-Craft烷基化反应,已使用FTIR和NMR成功地表征了双酚。随着腰果酚的引入,预聚物的粘度增加。 SEM结果表明,随着腰果酚用量的增加,存在一些尺寸越来越大的细胞。关于机械性能,与纯酚醛泡沫相比,用10 wt%腰果酚改性的酚醛泡沫的抗折强度增加了22%,弯曲模量增加了28%,这表明腰果酚的掺入确实改善了酚醛泡沫的韧性。此外,研究了不同剂量的腰果酚对酚醛泡沫的表观密度和热稳定性的影响。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号