| POLYMERS AND POLYMER MATRIX COMPOSITES |
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| Design and Performance Study of Alicyclic Epoxy-Acrylate Hybrid Light-curing Resin System |
| HU Shuaishuai1, XU Zhipeng1, LEI Zixuan2, CHEN Shuang1, LIU Yuhong2, QIANG Junfeng1
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1 College of Material Science and Engineering,Xi'an University of Science and Technology, Xi'an 710000, China
2 School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an 710000, China |
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Abstract In this paper, diethylene glycol dimethacrylate (DEGDMA) and triethylene glycol dimethacrylate (3EGDMA) were blended with cycloaliphatic epoxy resin (TTA-21) to construct TTA-21/DEGDMA and the cationic/radical hybrid light curing system of TTA-21/3EGDMA, the influence of the composition of the above system on the mechanical properties of the cured film was explored, and the composition TTA-21/3EGDMA with better performance was selected. On this basis, the effect of the addition of glycidyl methacrylate (GMA) on the tensile strength, fracture toughness, light transmittance, thermomechanical properties and micro morphology of TTA-21/3EGDMA was comprehensively discussed. The results show that when GMA is added at 20%, the tensile strength of TTA-21/3EGDMA film with a composition ratio of 2∶1 is 65.74 MPa, and the elongation at break is 4.80%; when GMA is added at 40%, KIC can reach 2.74 MPa·m1/2, an increase of 17.52%. The light transmittance of TTA-21/3EGDMA film with different GMA addition amount can reach more than 89.95%. As the amount of GMA added increases, the crosslink density of the cured product increases. After the amount of GMA added is greater than 30%,micro-phase separation occurs, which increases the flexibility of the film.
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Published: 10 June 2023
Online: 2023-06-19
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2023, Vol. 37 
