Review on Toughening of Phenolic Foams
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摘要: 综述了酚醛泡沫的两种增韧途径,一种是通过添加改性剂的物理共混增韧方式,改性剂包含柔性聚合物、纳米粒子、纤维等;另一种是通过化学键链的增韧方式,将柔性链段通过共价键与树脂基体相连,并简要介绍了通过改善发泡工艺或者采用可聚合固化剂等方式制备低酸性酚醛泡沫的方法。Abstract: Two methods of toughening the phenolic foam were summarized. One was physical blending toughening which introduced modifiers into the foam,such as the flexible polymer,nano-particles and fibers. The other method was chemical toughening which connected flexible chains with matrix resin through covalent bonds. Besides,preparation methods of low-acidity phenolic foams by improving the frothing technics or adding reactive curing agent were briefly introduced.
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Key words:
- phenolic foam /
- physical blending toughening /
- chemical toughening /
- low-acidity
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