范文编号:HG262 范文字数:20126,页数:34 摘 要 本文在通用树脂的基础上,开发了一种气干性优良、耐腐蚀性能好、低苯乙烯挥发的新型改性不饱和聚酯树脂。通用树脂有苯乙烯挥发性,耐腐蚀性能差、气干性不良、易形成裂纹等缺陷,加入双环戊二烯(DCPD)进行改性,树脂的固化速度差异不大,同时树脂具有很好的韧性,由于DCPD树脂与苯乙烯有较好的相容性,可以降低苯乙烯含量,树脂粘度没有较大的变化。
This study develops a kind of new modified unsaturated polyester with excellent properties of air dryness,corrosion resistance and low styrene volatility.The general resin has some imperfection such as high styrene volatility, little corrosion resistance, poor air dryness and flaw easily appears.Unsaturated polyester resin modified by dicyclopentadiene(DCPD)has same curing time but lower temperature and higher toughness compared to that of general resins. Due to DCPD modified unsaturated polyester has good compatibility with styrene so that amount of styrene is reduced, viscosity of modified resin changes little.
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