Studies of optical lens metal mold manufacturing for high precise and electronic information

金属模具的树脂脱模性能与以下因素有关：聚合物和金属模具表面之间的界面化学键和摩擦力或摩擦系数。本研究开发了一种含全氟基团的三嗪二硫醇的聚合物电镀方法，以获得具有较小表面自由能的金属模具。合成了含全氟烷基单元和烯丙基单元的三嗪二硫醇（RfTD）。以RfTD为单体，在不锈钢和镍板上进行了电聚合处理，并对所形成的薄膜的物理性能进行了研究。采用水接触角、Zisman曲线、X射线光电子能谱（XPS）、傅里叶变换红外光谱（FTIR）等测试手段对RfTD电聚合金属表面的微观结构和膜层进行了表征。用原子力显微镜（AFM）研究了薄膜的形貌。根据使用拉伸机的T型剥离试验测量UV固化树脂和RfTD电聚合镍板之间的剥离强度（剥离强度）试验。证明了对于10分钟内的聚合小时，接触角变为110度，并且其形成具有防水剂的薄膜。经聚合物镀层处理的镍镀层的临界表面张力为8 mJ/m^2，低于聚四氟乙烯的临界表面张力（18 mJ/m^2），表明表面由CF_3基团组成。在电聚合处理之后，通过热聚合，不溶率变为80%。通过该加工方法，可以形成耐溶剂性优异的薄膜。经处理的模具在脱模性能方面显示出比未经处理的模具更显著优异的耐久性。该技术已在透镜模具、自然亮调焦屏模具等产品中得到应用。

The resin-molding releasing properties of metal molds were shown to be related to following factors: interfacial chemical bondings between surfaces of polymers and metal molds and a friction force or friction coefficient. In this study, to obtain metal molds with smaller surface free energy, the polymer plating method of perfluorinated group-containing triazine dithiol was developed. Parfluoroalkyl unit and allyl unit included triazine dithiols (RfTD) were synthesized. The electropolymerization processing with RfTD as a monomer was carried out on the stainless steel and nickel plates, and the physical properties of the formed thin films were investigated. The surface microstructure and films of the RfTD electro-polymerized metal surfaces were characterized by water contact angle and Zisman plots, X-ray photoelectron spectroscopy (XPS), Fourier-transform infrared spectroscopy (FTIR). The morphology of the RfTD films was studied by atomic force microscopy (AFM). The peel strength (release strength) test between UV cured resin and the RfTD electropolymerized-nickel plate was measured according to the T-type peeling test using a tensile machine. It was proven that for polymerization hour in 10 minutes, the contact angle became 110 degrees, and that it formed the thin films with the water repellent. Nickel plates treated by the polymer platings have lower critical surface tension of 8 mJ/m^2 than that of Teflon (18 mJ/m^2), meaning that the surface consists of CF_3 groups. The insoluble rate became 80% by the thermal polymerization after the electropolymerization processing. By this processing method it was possible to form the thin films which is excellent in the solvent resistance. The treated mold showed more markedly excellent durability in releasing properties than untreated one. The technique has been developed in the products of molds for lens and natural bright focusing screen.