称样量对炭黑吸碘值测定结果的影响  

Influence of sample weight on black iodine absorption determination

作　　者：王定友[1] 

机构地区：[1]中橡集团炭黑工业研究设计院,四川自贡643000

出　　处：《橡胶工业》2000年第10期617-622,共6页China Rubber Industry

摘　　要：从炭黑吸碘值测定的吸附理论出发 ,以炭黑N2 2 0 ,N330和半补强炭黑为例 ,研究了称样量对炭黑吸碘值测定结果的影响。试验结果表明 ,由于现行国家标准GB/T 3780 1— 1 998及国际相关标准中关于称样量的规定存在缺陷 ,无法完全保证吸附平衡溶液中碘分子在炭黑表面达到完整的单分子层吸附 ,导致有些品种炭黑吸碘值的测定结果随称样量的改变而发生明显变化 ,并使吸碘值测定结果常处于分类交叉区域而无法报出结果。提出了可解决这一问题的新的称样量系统分类方法。Taking N220 black,N330 black and semi reinforcing furnace black as examples,the influence of the sample weight on the iodine absorption determination for carbon black was investigated based on the absorption theory.The results showed that a whole single molecular layer absorption of iodine on black surface in the equilibrium solution could not be completely insured because there were some shortcomings on the sample weight in the existent national standard GB/T 370.1—1998 and the relevant international standard resulting in the significant variation of the iodine absorption determination for some types of blacks with the sample weight,and the impossibility of reporting the result.A new system classification of sample weights was proposed to solve the above problem.

关 键 词：称样量 炭黑吸碘值 吸附平衡 橡胶填充剂 测定 

分 类 号：TQ330[化学工程—橡胶工业]