The effect of two different latent curing agents on the performance of anisotropic conductive adhesives

2011 International Symposium on Advanced Packaging Materials (APM) Pub Date : 2011-12-19 DOI:10.1109/ISAPM.2011.6105751

Bin Du, Xiong-hui Cai, Jiaqi Hu, Ling Wang, Hongqin Wang, Meiling Deng, Lijiao He, Chao Wan

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Abstract

To explore the effect of two different latent curing agents on the performance of anisotropic conductive adhesive (ACA), two adhesive with different latent curing agents (ACA1 and ACA2) were prepared and flexible radio frequency identification (RFID) tag inlays were assembled with them through flip chip technology. Curing profile and thermal stability of the pastes, microstructures and the bonding strength of ACA bonding joints, room temperature and hot humidity storage capacity of inlays were studied. It was found that the type of curing agent had much effect on the performance of ACAs. The ACA using B as the latent curing agent (ACA2) had lower curing peak temperature although it had lower Tg and smaller curing rate than the former (ACA1). After it cured there was less air bubbles in the resin. And it had better bonding strength and anti hot-humidity capacity than the former from other tests. This was important to the reliability of product. Thus, as a whole, latent curing agent B is more suitable to prepare the paste to assemble the flexible RFID tag inlays.

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两种不同潜固化剂对各向异性导电胶粘剂性能的影响

为探究两种不同潜固化剂对各向异性导电胶(ACA)性能的影响，制备了两种不同潜固化剂的胶粘剂(ACA1和ACA2)，并通过倒装技术组装柔性射频识别(RFID)标签嵌体。研究了膏体的固化性能和热稳定性、粘接接头的显微组织和粘接强度、嵌体的室温和热湿存储能力。研究发现，固化剂的种类对ACAs的性能有很大的影响。以B为潜伏固化剂的ACA (ACA2)比前者(ACA1)具有更低的Tg和更小的固化速率，但其固化峰温度更低。固化后树脂中的气泡减少了。与其他试验结果相比，具有较好的粘接强度和抗湿热性能。这对产品的可靠性很重要。因此，作为一个整体，潜伏固化剂B更适合于制备用于组装柔性RFID标签嵌体的浆料。

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2011 International Symposium on Advanced Packaging Materials (APM)

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