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首页> 外文期刊>Journal of Applied Polymer Science >Plasticizing effect of biodegradable dipropylene glycol bibenzoate and epoxidized linseed oil on diglycidyl ether of bisphenol A based epoxy resin
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Plasticizing effect of biodegradable dipropylene glycol bibenzoate and epoxidized linseed oil on diglycidyl ether of bisphenol A based epoxy resin

机译：基于双酚A基环氧树脂二缩水甘油醚的可生物降解二丙二醇Bibenzoate和环氧化亚晶油的塑化作用

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摘要

Major limitation for use of epoxy thermosets in engineering applications is its sudden brittle failure. In the present study dipropylene glycol dibenzoate (DPGDB) based plasticizer is used to modify diglycidyl ether of bisphenol A (DEGEBA) based epoxy resin system via simple blending technique. Bio-based epoxidized linseed oil was also used to modify epoxy resin system and compared with DPGDB modified resin. For DPGDB modified resin storage modulus and loss modulus of the epoxy system modified with 10% plasticizer increased by 7.54% and 12.24%, respectively. The primary mechanism responsible for such behavior is improved crosslinking density. With 5% plasticizer loading, flexural strength increased by 21%. There was an improvement of 312.74% in strain at failure for 10% plasticizer loading, while preserving its mechanical strength. It was found that DPGDB based modification was better than epoxidized linseed oil modification.
机译：环氧热固性树脂在工程应用中的主要限制是其突然脆性破坏。在本研究中，以二丙二醇二苯甲酸酯（DPGDB）为基础的增塑剂通过简单的共混技术对双酚A（DEGEBA）基环氧树脂体系的二缩水甘油醚进行改性。采用生物基环氧化亚麻籽油对环氧树脂体系进行改性，并与DPGDB改性树脂进行比较。对于DPGDB改性树脂，10%增塑剂改性的环氧树脂体系的储能模量和损耗模量分别提高了7.54%和12.24%。导致这种行为的主要机制是交联密度的提高。增塑剂用量为5%时，弯曲强度提高21%。在保持其机械强度的同时，10%的增塑剂负载使失效时的应变提高了312.74%。结果表明，DPGDB改性亚麻籽油的效果优于环氧化亚麻籽油改性。

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