摘要
以炭黑、石墨和镍粉等为导电填料,ABS和PETG作为高分子基体,采用熔融共混-模压成型工艺制备具有双连续相结构的质子交换膜燃料电池(PEMFC)用双极板。主要研究导电填料炭黑、石墨和镍粉等对ABS/PETG共混物的导电性、耐水性和耐热性能的影响。结果表明:当ABS和PETG为双连续相,炭黑为20%时,复合材料的导电性最好,为123S/m,玻璃化温度98℃,维卡软化温度123℃,接触角为100°。保持炭黑的含量为10%,通过调控石墨含量,发现当石墨含量在4%时,复合材料综合性能最好:电导率30S/m,玻璃化温度93℃,维卡软化温度107℃,接触角为103°。当保持15%炭黑的比例,镍粉含量为5%时得到最佳试样:电导率43S/m,玻璃化温度69℃,维卡软化温度150℃,接触角为89°。
Based on conductive fillers （carbon black, graphite and nickel powder）, the conductive ABS/ PETG composites with co-continuous phases, regarding as proton exchange membrane fuel celt （PEM- FC） bipolar plate, were fabricated using melt mixing-molding process, The effects of carbon black, graphite and nickel powder on the conductivity, water resistance and heat resistance of ABS/PETG com posites were studied in this paper. The results showed that in the continuous ABS/PETG composites, when carbon black was 20 %, the composites exhibited excellent properties： the electrical conductivity equaled to 123 S/m, the glass transition temperature （T~） and VEKA softening temperature （T v） were measured to 98 ℃ and 123 ℃, respectively, also, the water contact angle was 100 ~. When keeping 10~//00 of carbon content, the optimal composites appeared at composites with 4% of graphite= the electri- cal conductivity was 30 S/m, the Tg and T, were 93 ℃ and 107 ℃, respectively, in addition, the water contact angle was 103 °. Keeping 15 ° of carbon black, the composites with 5 % of nickel powder pres- ented the best performance= the electrical conductivity of 43 S/m）, Tg of 69 ℃, Tv of 150 ℃ and the water contact angle of 89° .
出处
《电池工业》
CAS
2014年第1期29-34,共6页
Chinese Battery Industry
基金
福建省教育厅基金项目(JK2013012)
国家自然科学基金项目(31170535和30771683)
