炭黑
材料科学
复合材料
相(物质)
聚合物
电导率
填料(材料)
色散(光学)
导电聚合物
电阻率和电导率
聚合物混合物
复合数
共聚物
化学
天然橡胶
光学
有机化学
电气工程
物理化学
工程类
物理
作者
Masao Sumita,Kazuya Sakata,Shigeo Asai,Keizo Miyasaka,Hideaki Nakagawa
出处
期刊:Polymer Bulletin
[Springer Nature]
日期:1991-02-01
卷期号:25 (2): 265-271
被引量:934
摘要
Dispersion state of carbon black(CB) was studied in polymer blends which are incompatible with each other. It was found that CB distributes unevenly in each component of the polymer blend. There are two types of distribution. (1) One is almost predominantly distributed in one phase of the blend matrix, and in this phase fillers are relatively homogeneously distributed in the same manner as a single polymer composite. (2) In the second, the filler distribution concentrates at interface of two polymers. As long as the viscosities of two polymers are comparable, interfacial energy is the main factor determining uneven distribution of fillers in polymer blend matrices. This heterogeneous dispersion of conductive fillers has much effect on the electrical conductivity of CB filled polymer blends. The electrical conductivity of CB filled polymer blends is determined by two factors. One is concentration of CB in the filler rich phase and the other is phase continuity of this phase. These double percolations affect conductivity of conductive particle filled polymer blends.
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