利用紫外辐照法在聚乙烯（PE）锂离子电池隔膜表面接枝上丙烯酸甲酯（MA）以改善隔膜的润湿性,研究了引发剂浓度、单体浓度和辐照时间对接枝率的影响,通过红外光谱、SEM观察和接触角测定等手段进行了表征分析。在纯MA单体溶液中,引发剂二苯甲酮（BP）浓度为0.02g/mL,辐照90s接枝率达到68.9%,接触角从原膜的46°降低到12°。
The ultraviolet irradiation method was used to graft methyl acrylate （MA） to Li-ion battery separator. It was found that the degree of grafting （DG） was influenced by initiator concentration, monomer concentration and irradiation time. The MA-graft-separator was analyzed by FT-IR, SEM and contact angle testing. With BP concentration of 0.02g/mL, pure MA monomer solution and irradiation time of 90s, DG was 68.9°, and the wetting ability improved obviously with the contact angle reduced to 12°from 46°.
参考文献
| [1] | 唐健,刘杰,安峰.新型非织造材料在电池隔膜中的应用[J].产业用纺织品,2002(08):32-35. |
| [2] | 吴大勇,刘昌炎.锂离子电池隔膜研究进展[J].新材料产业,2006(09):48-53. |
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