Cure Kinetics and Mechanical Interfacial Characteristics of Zeolite/DGEBA Composites

Journal of the Korean Chemical Society

Soo-Jin Park¹  Young-Mi Kim¹  Jae-Sup Shin¹ 

关键词: Ç¥¸éó¸®;    Zeolite;    Diglycidylether of Bisphenol A(DGEBA);    Cure Kinetics;    Mechanical Interfacial Properties;    Surface Treatments;   

DOI  :  

学科分类：化学（综合）

来源: Korean Chemical Society

【 摘 要 】

In this work, the zeolite/diglycidylether of bisphenol A(DGEBA) systems were investigated in terms of the cure kinetics and mechanical interfacial properties of the composites. The 4, 4-diamino diphenyl methane(DDM) was used as a curing agent for epoxy. Two types of zeolite(PZ) were prepared with 15 and 35 wt% KOH treatments(15-BZ and 35-BZ, respectively) for 24 h, and their surface characteristics were studied by X-ray photoelectron spectroscopy (XPS) and X-ray diffraction(XRD). Cure kinetics of the composites were examined in the context of differential scanning calorimetry(DSC), and mechanical interfacial properties were investigated in critical stress intensity factor(KIC) and critical strain energy release rate(GIC). In the results of XPS and XRD, sodium ion(Na) of zeolite was exchanged for potassium ion(K), resulting from the treatment of KOH. Also, Si2p/Al2p composition ratios of the treated zeolite were increased, which could be attributed to the weakening of Al-O bond in framework. Cure activation energy(Ea) of 15-BZ composites was decreased, whereas KIC and GIC were increased, compared with those of the pure zeolite/DGEBA composites. It was probably accounted that the acidity of zeolite was increased by surface treatments and the cure reaction between zeolite and epoxy was influenced on the increased acidity of zeolite.

【 授权许可】

Unknown