mGO/Cu2O纳米复合材料改性UV固化丙烯酸酯压敏胶的研究

Study on UV curable acrylate pressure sensitive adhesive modified by mGO/CuO nanocomposites

利用硅烷偶联剂KH-570制备了改性的氧化石墨烯(mGO),并将纳米氧化亚铜负载到改性后的氧化石墨烯表面,得到mGO/Cu2O纳米复合材料;然后将其添加到丙烯酸单体中,通过本体聚合法制备了改性的丙烯酸酯压敏胶。研究了mGO/Cu2O含量对丙烯酸酯压敏胶粘接性能、润湿性能、热稳定性、凝胶含量、导电性和抗菌性能的影响。研究结果表明:随着mGO/Cu2O含量增加,压敏胶的初粘力减少,持粘力增加,180°剥离力先增加后减小,压敏胶的凝胶含量也随之增加,而压敏胶的润湿性先增加后减小。此外,mGO/Cu2O的添加能够有效地加强压敏胶的热稳定性、导电性和抗菌性能。当w(mGO/Cu2O)=20%(相对于丙烯酸酯压敏胶质量而言)时,持粘力达到272 h,导电性增强,电导率上升至1.3×10^-2S/cm。

Modified graphene oxide(mGO) was prepared by silane coupling agent KH-570,and nano cuprous oxide was loaded on the surface of modified graphene oxide to obtain mGO/Cu2O nanocomposites. Then,it was added to the acrylic monomer,and the modified acrylate pressure sensitive adhesive was prepared by bulk polymerization. The effects of mGO/Cu2O content on the bonding properties,wettability,thermal stability,gel content,conductivity and antibacterial properties of acrylate pressure sensitive adhesive were studied. The research results showed that with the increase of mGO/Cu2O content,the initial tack of pressure sensitive adhesive decreased,the holding power increased,the 180 degree peel force increased first and then decreased,the gel content of pressure sensitive adhesive increased,and the wettability of pressure sensitive adhesive increased first and then decreased. In addition,the addition of mGO/Cu2O could effectively enhance the thermal stability,conductivity and antibacterial properties of pressure sensitive adhesive. When w(mGO/Cu2O)=20%(relative to the mass of acrylate pressure sensitive adhesive),the holding power reached 272 h,and the conductivity increased to1.3×10^-2 S/cm.