炭黑填充型粉末天然橡胶的密炼机塑炼特性研究

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炭黑填充型粉末天然橡胶的密炼机塑炼特性研究张安强[1] 林雅铃[2] 王炼石[1][1]华南理工大学材料科学与工程学院高分子系,广东广州510641 [2]华南农业大学资源与环境学院制药工程系,广东广州510642摘要：采用实验室微型密炼机（Brabender转矩流变仪）研究了炭黑填充型粉末天然橡胶[P（NR/HAF）]的密炼机塑炼/混炼性能,即塑炼时间、塑炼温度和转速等基本工艺参数对胶料门尼粘度的影响。与传统的块状天然橡胶/炭黑（NR/HAF）的密炼机混炼相比,P（NR/HAF）在密炼机混炼时具有较高的混炼温升和较快的升温速率,使得胶料在较高的温度下被塑炼,从而表现出与传统的NR/HAF不同的密炼机混炼特性,其最佳塑炼温度有所降低。通过逐步回归分析建立的“门尼粘度-塑炼条件”模型可以较好地拟合和预测不同塑炼条件下P（NR/HAF）密炼机塑炼后胶料的门尼粘度。

KeyWord：carbon black filled powdered natural rubber;internal mastication properties;mooney viscosity;regression analsis

关键词：炭黑填充型粉末天然橡胶 密炼机塑炼性能 门尼粘度 回归分析

' }2 b+ u3 U# w, M3 K分类号：TQ332.5 TQ330.6[著者标引]文献标识码：A文章编号：1005-3174（2008）01-00048-06
7 d, y3 \8 h" `+ lThe mastication properties of carbon black filled powdered natural rubber during internal mixing ZHANG An-qiang,LIN Ya-ling,WANG Lian-shi1. Department of Polymer Material Science and Engineering,College of Material Science and Engineering,South China University of Technology,Guangzhou 510640,China;2. Department of Pharmaceutical Engineering,College of Resources and Environment,South China Agriculture University,Guangzhou 510642,China
! }  s, H2 q( `" sAbstract：The mixing rheological properties of carbon black filled powdered natural rubber [P（NR/HAF）] were studied using a laboratory mini-internal mixer, i.e., a mixing head attached to Brabender Plasticorder. The main influence factors including mixing time, rotor speed and circling oil temperature were studied in the paper. Compared with traditional internal dry mixing of bale NR/carbon black （NR/HAF）, P（NR/HAF） showed higher and faster mixing temperature build-up, which results in its special mixing rheological properties, i.e., the optimum mixing temperature for P（NR/HAF） decreased. A Mooney viscosity-mastication condition （mixing time and mixing temperature） model was established based on stepwise regression, it could well fit and predict the Mooney viscosity under different mastication condition.
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0 c. d6 B  l* D3 hKeyWord：carbon black filled powdered natural rubber;internal mastication properties;mooney viscosity;regression analsis
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收稿日期：2007-08-26基金赞助：国家自然科学基金资助项目（59773010）;广东省自然科学基金资助项目（031366,0400016）;华南理工大学自然科学基金资助项目（324-E5040160）
作者简介：张安强（1976-），男，湖南安仁人，博士，讲师，主要从事聚合物合成、改性与加工流变等方面的研究工作。
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