一种高浓度PC反射片光学母粒及其制备方法其特征在于由以下重量百分比原料组成:PC树脂30%~40%、无机粒子50%~60%,分散剂4%~10%,阻燃剂1%~2%,光稳定剂1%~3%。其制备方法是将计量的无机粒子与分散剂在高混机中,80℃高速搅拌10 min预处理;然后将上述其他材料与预处理好的无机粒子在低速混合状态下充分混合;再用精密计量 A high-concentration PC reflection sheet optical master batch and a preparation method thereof are characterized by comprising the following raw materials in percentage by weight: 30-40% of PC resin, 50-60% of inorganic particles and 4-10% of dispersant, Agent 1% ~ 2%, light stabilizer 1% ~ 3%. The preparation method comprises the following steps: pre-treating the metered inorganic particles and the dispersant in a high-speed mixer at high speed for 10 minutes at 80 DEG C; then thoroughly mixing the other materials with the pre-treated inorganic particles under a low-speed mixing condition; Measurement