Synthesis and application of phenolic resin internally toughened by chain extension polymer of epoxidized soybean oil |
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Authors: | Yue Situ Jianfeng Hu Hong Huang Heqing Fu Hanwei Zeng Huanqin Chen |
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Institution: | (1) School of Chemical and Energy Engineering, South China University of Technology, Guangzhou, 510640, China |
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Abstract: | A novel epoxidized soybean oil (ESO) internally toughened phenolic resin(ESO-IT-PR) with both good toughness and excellent
thermal stability was prepared as the matrix resin of copper clad laminate (CCL). FTIR was adopted to investigate the molecular
structure of modified phenolic resins and SEM was used to observe the micro morphology of their impacted intersections. The
properties of CCLs prepared with these modified phenolic resins were studied to determine the optimal process and investigate
the toughening mechanism. The main modifying mechanism is the etherification reaction between phenol hydroxyl and ESO catalyzed
by triethanolamine and the chain extension polymerization between ESO and multi-amine gives the long-chain ESO epoxy grafting
on the phenolic resin prepolymer. when the ESO content is 30% and the curing agent content is 7%, the ESO toughened phenolic
resin possesses optimal performance. The flexible ESO epoxy shows significant toughening effect and it crosslinks with the
phenolic resin to form an internally toughened network, which is the key factor for improving the solderleaching resistance
of CCL prepared with this modified phenolic resin.
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Translated from Journal of South China University of Technology (Natural Science Edition), 2007, 35(7): 99–104 译自: 华南理工大学学报(自然科学版)] |
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Keywords: | phenolic resins toughness epoxidized soybean oil copper clad laminate solderleaching resistance |
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