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REVERSIBLE SELF-REPAIRING EPOXY RESIN AND PREPARATION AND RECOVERY REMOULDING METHOD THEREFOR
REVERSIBLE SELF-REPAIRING EPOXY RESIN AND PREPARATION AND RECOVERY REMOULDING METHOD THEREFOR
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机译:可逆自修复环氧树脂及其制备和回收的方法
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摘要
This invention provides a self-healable epoxy resin and its preparation, recycling and remolding method. With the catalyst of potassium iodide, an ester solution of 2-mercaptoacetic acid was oxidated by 30% H2O2 to form 2,2′-dithiodiacetic acid; then 2,2′-dithiodiacetic acid was dehydrated and cyclizated by anhydride to form 1,4,5-oxadithiepane-2,7-dione; 1,4,5-oxadithiepane-2,7-dione and methylhexahydrophthalic anhydride were mixed by mass ratio and cured with epoxides to get the self-healable epoxy resin. Through controlling dynamic and permanent three-dimensional crosslinked network, the self-healable epoxy resins provided in this invention exhibit high thermal resistance and improved mechanical properties as well as excellent self-healing ability, recyclability and remoldability. This invention provides a preparation method with the merits of low cost, simple production processes, broad application prospects and strong utility.
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机译:本发明提供了一种可自愈的环氧树脂及其制备,回收和重塑的方法。用碘化钾催化剂,使2-巯基乙酸的酯溶液被30%H 2 Sub> O 2 Sub>氧化,形成2,2'-二硫代二乙酸。然后将2,2'-二硫代二乙酸脱水并用酸酐环化,形成1,4,5-氧杂噻吩-2,7-二酮。将1,4,5-二氧杂噻吩-2-2,7-二酮和甲基六氢邻苯二甲酸酐按质量比混合并用环氧化物固化,得到可自愈的环氧树脂。通过控制动态和永久的三维交联网络,本发明提供的自修复环氧树脂显示出高的耐热性和改善的机械性能,以及优异的自修复能力,可回收性和可重塑性。本发明提供了一种成本低廉,生产工艺简单,应用前景广阔,实用性强的制备方法。
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