| RESEARCH PAPER |
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| Study on UV Curing Behavior and Properties of ES/CEP Resin |
| Zhouhui YU,Peizhong ZHAO,Fangyou HU
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| Department of Aeronautical and Mechanical Engineering, Qingdao Branch, Naval Academy of Aeronautical Engineering, Qingdao 266041 |
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Abstract The effect of process parameters, including epoxy resin composition, curing time, initiator types and levels on curing behavior were studied by taking organic silicone as toughening agent to modified epoxy resin. Curing product was analyzed by TG and DSC. The results showed that when the content of initiator 820 and T were 2%, the ratio of epoxy resin and silicone resin was 85∶15, resin system could achieve good solidification effect under the high pressure mercury lamp with 15 minutes UV curing. The tensile strength of blending resin with 15% organic silicon resin slight declines while toughness improved obviously compared with pure epoxy resin. At the same time, glass transition temperature decreased 7.5 ℃ and thermal degradation rate significantly decreased in rapid floating zone.
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Published: 25 January 2018
Online: 2018-01-25
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| Model | Appearance | Dynamic
viscosity
cP | Epoxide
number
mol/100 g | | UVR-6128 | Light yellow
thickened and
transparent liquid | 400—750 | 0.45—0.53 | | ES06 | Yellow
transparent | 115—300 | 0.03—0.08 |
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The main properties of the resin
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| Sample | CEP | ES | 820 | T | | S1 | 100 | 0 | 0 | 2 | | S2 | 100 | 0 | 1 | 2 | | S3 | 100 | 0 | 2 | 2 | | S4 | 100 | 0 | 3 | 2 | | S5 | 100 | 0 | 4 | 2 | | S6 | 100 | 0 | 2 | 0 | | S7 | 100 | 0 | 2 | 1 | | S8 | 100 | 0 | 2 | 3 | | S9 | 100 | 0 | 2 | 4 | | S10 | 90 | 10 | 2 | 2 | | S11 | 85 | 15 | 2 | 2 | | S12 | 80 | 20 | 2 | 2 | | S13 | 75 | 25 | 2 | 2 | | S14 | 70 | 30 | 2 | 2 |
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Schematic of resin curing
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Typical temperature change curve of different ratio of resin
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The effects of different ratio of resin on curing rate
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Gel conversion rate of different ratio of resin with different light time
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The influence of mass fraction of ES on the mechanical behavior of ES/CEP blend
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| Sample | S3 | S10 | S11 | S12 | S13 | S14 | | Tg/℃ | 230.1 | 224.8 | 222.6 | 217.5 | 211.7 | 210.2 | | Td,5%/℃ | 310.6 | 309.4 | 312.1 | 308.3 | 302.4 | 296.5 |
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Thermal properties of ES/CEP resin
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DSC curve of ES/CEP resin
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TG curve of ES/CEP resin
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2018, Vol. 32 
