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第 36 卷第 5 期 精 细 化 工 Vol.36, No.5
201 9 年 5 月 FINE CHEMICALS May 2019

功能材料
改性水滑石对聚丙烯阻燃和力学性能的影响

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王松林 1,2 ，董合贺 ，邢仁卫 ，崔鲁青 ，王 飞 ，杨旭旭
（1. 青岛科技大学 海洋科学与生物工程学院，山东 青岛 266000；2. 齐鲁工业大学 制浆造纸科学与技
术教育部/山东省重点实验室，山东 济南 250353；3.潍坊科技学院 山东半岛卤水资源高值化绿色化综合
利用工程技术研发中心，山东 寿光 262700）
摘要：以硝酸镁和硝酸铝为原料，采用共沉淀法制备了 Mg/Al-CO 3 -LDHs 前体，然后通过阴离子交换法制备了
衣康酸插层、钛酸酯偶联剂 NDZ-201 附着的复合改性水滑石（ITA-LDHs）。通过熔融共混法制备了阻燃性能和
力学性能较好的 ITA-LDHs 改性的聚丙烯（PP）复合材料。通过 FTIR、XRD、TGA 和 SEM 对 ITA-LDHs 进行了
表征。结果表明：衣康酸已经插入到水滑石层间，钛酸酯偶联剂已经附着在水滑石表面。对复合材料的极限氧指
数（LOI）、垂直燃烧实验（UL-94）、热重曲线、热释放速率（HRR）、总热释放速率（THR）和质量损失率进行
了测定，结果表明：随着水滑石添加量的增多，无论是未改性还是改性的水滑石都能对 PP 起到阻燃效果，且改
性后的水滑石（LDHs）的 LOI 值、抗熔滴时间、热稳定性、成炭率均显著提高。当水滑石的添加量为 30%（以
聚丙烯的质量为基准，下同）时，ITA-LDHs 改性 PP 的 LOI 达到 27.5%，明显优于添加未改性 LDHs PP 的 25.5%；
UL-94 等级达到 V0 级，优于未改性 LDHs 的 V1 级；通过测试材料的弯曲强度和拉伸强度可知，与未改性的水滑
石相比，改性后的水滑石力学性能明显改善。
关键词：复合改性；水滑石；聚丙烯；阻燃剂；力学性能；功能材料
中图分类号：TB34 文献标识码：A 文章编号：1003-5214 (2019) 05-0813-08

Effect of Modified Hydrotalcite on Flame Retardancy and
Mechanical Properties of Polypropylene

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WANG Song-lin , DONG He-he , XING Ren-wei , CUI Lu-qing , WANG Fei , YANG Xu-xu
（1. School of Marine Science and Bioengineering, Qingdao University of Science & Technology, Qingdao 266000, Shandong,
China; 2. Key Laboratory of Pulp and Paper Science & Technology of Ministry of Education/Shandong Province, Qilu
University of Technology, Jinan 250353, Shandong, China; 3. Shandong Peninsula Engineering Research Center of
Comprehensive Brine Utilization, Weifang University of Science and Technology, Shouguang 262700, Shandong, China）
Abstract: Mg/Al-CO 3-LDHs precursor was prepared by coprecipitation from magnesium nitrate and
aluminium nitrate. And then composite modified hydrotalcite (ITA-LDHs) with itaconic acid intercalation
and titanate coupling agent NDZ-201 was prepared by anion exchange method. Subsequently, polypropylene
(PP) composites with good flame retardancy and good mechanical properties were prepared by melt
blending. ITA-LDHs was characterized by FTIR, XRD, TGA and SEM. The results showed that itaconic
acid was inserted into the interlayer of hydrotalcite, and titanate coupling agent was attached to the surface
of hydrotalcite. The prepared composites were evaluated by limit oxygen index (LOI), vertical burning test
(UL-94), TGA and cone calorimeter. The results indicated that with the increase of the addition of
hydrotalcite, both unmodified and modified LDHs played flame-resistant effect on PP. The LOI value,
anti-dripping time, thermal stability and carbonization rate of the composites containing modified LDHs
were better than those of the composites containing unmodified LDHs. When the addition of ITA-LDHs in
PP was 30% (based on the mass of PP, the same below), the LOI value reached 27.5% and the UL-94 grade
reached V0 level, both were better than those of the composites adding unmodified hydrotalcite. By testing
the bending strength and tensile strength of the composites, it was found that the addition of ITA-LDHs
improved obviously the mechanical properties of the composites.
Key words: composite modification; hydrotalcite; polypropylene; flame-retardant agent; mechanical

收稿日期：2018-08-27; 定用日期：2019-01-22; DOI: 10.13550/j.jxhg.20180630
基金项目：教育部制浆造纸科技重点实验室基金会资助（山东省）（KF201706）
作者简介：王松林（1978—），男，副教授，博士，硕士生导师，E-mail：wangsongl@126.com。