利索-全球专利检索

  1. 登录
  2. 注册
发明公开
CN107903494A 一种聚丙烯基共混型纳米复合材料及其制备方法 无效 - 驳回

一种聚丙烯基共混型纳米复合材料及其制备方法
摘要：
本发明涉及一种聚丙烯基共混型纳米复合材料及其制备方法。聚丙烯基共混型纳米复合材料选择均聚型聚丙烯聚合物为基体，选择乙烯-辛烯共聚物为增韧相，选择二氧化硅为纳米填充相，制备聚丙烯基共混型纳米复合材料。制备方法包括：首先利用熔融共混的方式在175℃和剪切力作用下，进行增韧相与纳米粒子的熔融共混，制备得到高浓度母料；而后在180℃和剪切力作用下，将母料与聚丙烯基体进行二次熔融共混，得到聚丙烯基共混型纳米复合材料。本发明的聚丙烯基共混型纳米复合材料与聚丙烯基体相比，断裂伸长率提升高于30％，直流击穿场强提升超过30％。
摘要（英）：

The invention relates to a polypropylene based blended nanocomposite and a preparation method of the polypropylene based blended nanocomposite. The polypropylene based blended nanocomposite is prepared from a homopolymerized polypropylene polymer as a matrix, an ethylene-octylene copolymer as a toughening phase, and silicon dioxide as a nano filling phase. The preparation method comprises the following steps: firstly performing melt blending on the toughening phase and a nano particle in a melt blending way under the action of the shearing force at the temperature of 175 DEG C to prepare a high-concentration master batch, and then conducting secondary melt blending on the master batch and the polypropylene matrix under the action of the shearing force at the temperature of 80 DEG C to obtain the polypropylene based blended nanocomposite. Compared with the polypropylene matrix, the elongation at break of the polypropylene based blended nanocomposite is increased to 30%, and the direct current breakdown field strength is increased by more than 30%.

0/0