摘要
采用熔融共混母粒稀释技术,辅以3-DD高效动态混合器制备聚丙烯(PP)/炭黑(CB)薄膜。利用热重分析法与潜在的在线检测新方法——色彩色差法间接表征了CB在PP基体中的分散性。热重分析表明,当CB质量分数为2.2%时,其在薄膜中的分散较均匀,而当CB质量分数增至3.3%时,其分散性略差,但热失重曲线重合性仍较好;薄膜间的标准色差与两两色差均表明CB在薄膜中分散良好、分布均匀。运用skewness-kurtosis检验法对色差值进行正态分布及其显著性检验,结果表明色差值近似服从正态分布且相互之间无显著差异。此外,根据色差值与灰卡级数之间的换算关系得到薄膜的灰卡级数为4.68。
Polypropylene（PP）/ carbon black（CB） films were prepared via melt blending-masterbatch dilution method,assisted by a high-efficiency dynamic mixer.The thermogravimetric analysis（TGA） and color difference（CD） mettod,a potential on-line measurement new method,were employed to characterize the dispersion of CB particles in PP matrix.TGA results show that the CB particles have a good dispersion when its mass concentration is 2.2%.When the mass concentration comes up to 3.3%,the dispersion of CB is slightly worse,however,the curves of TGA are coincident well.The standard CD and CD between every two samples both indicate that CB particles are well dispersed and uniformly distributed.The testing method of skewness-kurtosis was employed to test the normal distribution of color difference values and its significance.It shows that the color difference values approximately follow normal distribution and there exists no significant difference between them.Besides,based on the relationship between CD and gray scale,the achieved gray scale of the films is 4.68.
出处
《纺织学报》
EI
CAS
CSCD
北大核心
2011年第11期17-22,共6页
Journal of Textile Research
基金
科技部国家科技支撑计划资助项目(2009BAE75B01)
关键词
聚丙烯
炭黑
定量
色彩色差
分散
正态分布
灰卡级数
polypropylene
carbon black
quantitative
color difference
dispersion
normal distribution
grey scale
