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

高精度电子信息光学透镜金属模具制造研究

基本信息

批准号：
16510081
负责人：
HIRAHARA Hidetoshi
金额：
$ 2.37万
依托单位：
IWATE University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2004
资助国家：
日本
起止时间：
2004 至 2006
项目状态：
已结题

项目摘要

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.

金属模具的树脂脱模性能与以下因素有关：聚合物与金属模具表面之间的界面化学键和摩擦力或摩擦系数。为了获得具有较小表面自由能的金属模具，本研究开发了含全氟基团三嗪二硫醇的聚合物电镀方法。合成了含三嗪二硫醇（RfTD）的全氟烷基和烯丙基单元。以RfTD为单体对不锈钢和镍板进行了电聚合处理，并对所形成薄膜的物理性能进行了研究。采用水接触角和Zisman图、x射线光电子能谱（XPS）、傅里叶变换红外光谱（FTIR）对RfTD电聚合金属表面的微观结构和薄膜进行了表征。用原子力显微镜（AFM）研究了RfTD膜的形貌。采用拉伸机进行t型剥离试验，测定了UV固化树脂与RfTD电聚合镍板的剥离强度（释放强度）。经实验证明，在10分钟内聚合1小时，接触角达到110度，形成了具有拒水剂的薄膜。经聚合物镀层处理的镍板的临界表面张力为8 mJ/m^2，低于聚四氟乙烯的临界表面张力（18 mJ/m^2），这意味着表面由CF_3基团组成。经电聚合处理后，经热聚合，不溶率达到80%。通过这种加工方法，可以形成耐溶剂性能优异的薄膜。处理后的霉菌在释放性能上表现出明显优于未经处理的霉菌的耐久性。该技术已在透镜模具和自然亮聚焦屏产品中得到应用。