PP透明剂后处理的研究  

Studies on the Process for Purifying the Nucleating Agent for Polypropylene

作　　者：叶挺进[1] 袁慧雅[1] 冯开才[1] 刘振兴[1] 

机构地区：[1]广州中山大学高分子研究所

出　　处：《广东化工》2003年第4期4-7,共4页Guangdong Chemical Industry

摘　　要：本论文基于改善DBS类成核剂在加工中产生臭味及提高PP透明性的设想,采用国内DBS第二代成核剂(CHⅡ),先后用丙酮、异丙醇(IPO)、乙醇、N,N-二甲基酰胺(DMF)和环醚类溶剂(SA)等对其进行了重结晶提纯;研究了提纯条件(不同溶剂、温度、溶剂用量)对CHⅡ的重结晶收率、熔点、表观密度和热性能的影响,其中用溶剂SA效果最好;确定了以17/1为最佳溶剂/溶质重量比用量。经溶剂后处理的CHⅡ比粗产品的纯度上有了很大的提高,CHⅡ经纯化后,在1700.0cm^(-1)处的C=O峰消失。The present article had conducted intensive studies with a view to developing a crystalline polypropylene having good transparency and improved odor - non - emitting properties. CHII was purified by recrystallization with acetone, iso-propanol, alcohol and N, N - dimethyl formamide (DMF), and SA. The optimized conditions (solvent, temperature and solvent dosage) were investgated, which effected the yield, the melting point, the apparent and the thermal properties of CHII. The experimental data show that SA was the most suitable solvent for CHII recrystallization and the solvent ratio is 1/17. The purity of CHII was confirmed by FTIR spectra in which the 1700 cm-1 disappared.

关 键 词：PP透明剂 后处理 聚丙烯 成核剂 纯化 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业] TQ320.4