Preparation method of HIPS resin dedicated for refrigerator inner liner

The invention provides a preparation method of an HIPS resin dedicated for a refrigerator inner liner, and in particular, relates to a method for preparing the HIPS resin with high glossiness and low residual volatile matters. Powder rubber for modification is added to a microfluidization homogenizer and undergoes a reaction to obtain nano-scale powder rubber, the nano-scale powder rubber is dispersed in a plastic continuous phase by a mechanical mixing method, and the HIPS resin dedicated for the refrigerator inner liner is prepared. The HIPS resin prepared by the method meets physical and mechanical properties of HIPS for the refrigerator inner liner, has the characteristics of high glossiness, low residual volatile matters and the like, can be directly used in production and processing of the refrigerator inner liner, and has the advantages of safety and environmental protection. 本发明提供了种冰箱内胆专用HIPS树脂的制备方法，特别是种具有高光泽度、低残留挥发分的HIPS树脂的制备方法。通过把用于改性的粉末橡胶加入微射流均质机中反应得到的纳米级粉末橡胶，采用机械混合的方法分散在塑料连续相中，制备冰箱内胆专用HIPS树脂。采用上述方