一种适用于摄像头模组的UV粘结剂及其制备方法

本发明提供了一种适用于摄像头模组的UV粘结剂及其制备方法，UV粘结剂包括如下原料：聚氨酯丙烯酸酯预聚物、丙烯酸酯单体、自由基光引发剂、填料、增触剂、硅烷偶联剂，丙烯酸酯单体由单官能团丙烯酸酯单体、双官能团丙烯酸酯单体复配而成，单官能团丙烯酸酯单体分子一端为可聚合的不饱和双键基团，另一端为与低表面能液晶聚合物极性相近的基团，粘结过程界面处的小分子不饱和双键端朝向粘结剂内部，另一端朝向低表面能粘结界面，起到类似偶联剂的作用，提高了粘结剂对低表面能界面的润湿性，进而提高粘结强度；两种官能团单体极性差距较大，可防止单官能团丙烯酸酯单体在界面处过度聚集，进一步提高粘结强度。 The invention provides a UV binder suitable for a camera module and a preparation method of the UV binder, the UV binder comprises the following raw materials: a urethane acrylate prepolymer, an acrylate monomer, a free radical photoinitiator, a filler, a thixotropic agent and a silane coupling agent, the acrylate monomer is formed by compounding a monofunctional acrylate monomer and a bifunctional acrylate monomer, and the silane coupling agent is formed by compounding a silane coupling agent and a silane coupling agent. One end of a monofunctional acrylate monomer molecule is a polymerizable unsaturated double-bond group, the other end of the monofunctional acrylate monomer molecule is a group of which the polarity is similar