Page 47 - 《精细化工》2021年第6期

第 38 卷第 6 期 精 细 化 工 Vol.38, No.6
202 1 年 6 月 FINE CHEMICALS June 2021

功能材料
PVC 基液态阻尼材料的制备及流变性能

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汪宇泽 ，冯阳宁 ，吴 宇 ，周 溆 ，郝同辉 ，张群朝
（1. 湖北大学 材料科学与工程学院，湖北 武汉 430062；2. 湖北大学 体育学院，湖北 武汉 430062）
摘要：以聚氯乙烯（PVC）为基体，对苯二甲酸二辛酯（DOTP）为增塑剂，与超细活性 CaCO 3 、钙锌热稳定剂
（简写为 Ca-Zn）、乳化剂 OP-10、润滑剂液体石蜡复合改性制备了 PVC 基阻尼材料。采用动态流变仪、动态热
机械分析仪、SEM 对试样的性能和形态进行了表征，运用正交设计探究各组分对材料性能的影响。结果表明，
CaCO 3 与 DOTP 的质量比对 PVC 基阻尼材料阻尼性能的影响最显著；当 m(PVC)∶m(Ca-Zn)∶m(CaCO 3 )∶
m(DOTP)∶m(OP-10)= 42.75∶2.25∶31.8∶21.2∶2 时，25 ℃、频率在 0.01~150 Hz 范围内，制备的阻尼材料的
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tanδ 最大值为 0.604；剪切速率 0.1 和 150 s 时，表观黏度分别为 3738 和 2.19 Pa·s，具有优异的抗流挂性与稳
定性。通过对样品形态分析构建了微观聚集态模型，提出刚性填料团聚-解团聚和聚合物微球变形对流变性能的
作用机理。
关键词：车用阻尼材料；PVC；阻尼性能；流变性能；增塑剂；无机填料
中图分类号：TQ325.3；TB34 文献标识码：A 文章编号：1003-5214 (2021) 06-1109-06

Preparation and rheological properties of PVC liquid damping materials

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WANG Yuze , FENG Yangning , WU Yu , ZHOU Xu , HAO Tonghui , ZHANG Qunchao
（1. School of Materials Science and Engineering, Hubei University, Wuhan 430062, Hubei, China; 2. School of Physical
Education, Hubei University, Wuhan 430062, Hubei, China）
Abstract: Polyvinyl chloride (PVC)-based damping materials were prepared with PVC as matrix,
dioctyl terephthalate (DOTP) as plasticizer, super fine active CaCO 3 as filler, OP-10 as emulsifier and
liquid paraffin as lubricant in the presence of calcium and zinc heat stabilizer (denoted as Ca-Zn). The
properties and morphology of the samples were characterized by dynamic rheometer, dynamic
thermomechanical analyzer and SEM. The orthogonal design was used to explore the influence of each
component on the performances of material. The results showed that the mass ratio of CaCO 3 to DOTP
had the most significant effect on its damping performance of PVC-based damping materials. When the
frequency was in the range of 0.01~150 Hz, the tanδ maximum value of the damping material with
m(PVC)∶ m(Ca-Zn)∶ m(CaCO 3 )∶ m(DOTP)∶ m(OP-10)=42.75∶ 2.25∶ 31.8∶ 21.2∶ 2 reached
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0.604 at 25 ℃. The apparent viscosity was 3738 and 2.19 Pa·s at a shear rate of 0.1 and 150 s ,
respectively, which showed that the sample had excellent sag resistance and stability. Based on the
morphological analysis of the samples, a microagglomeration model was established, and the
mechanism of agglomeration-disagglomeration of rigid filler and the deformation of polymer
microspheres on the rheological properties was proposed.
Key words: automotive damping materials; PVC; damping properties; rheological properties; plasticizers;
inorganic fillers

LASD（Liquid applied sound deadener）是一种 点，广泛用于汽车、航空、体育器材等领域。通常
取代传统沥青基和橡胶基预成型阻尼片材的可喷涂 溶剂型 LASD 的阻尼性能优异，但有机溶剂挥发
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液态阻尼材料 [1-2] ，具有避免人工贴片、效率高等优 （VOC）对环境危害较大 ，如何制备高性能、环

收稿日期：2020-11-02; 定用日期：2021-02-08; DOI: 10.13550/j.jxhg.20201016
基金项目：湖北省重大专项（2017AAA115）
作者简介：汪宇泽（1996—），女，硕士生，E-mail: 1459722585@qq.com。联系人：郝同辉（1979—），男，讲师，E-mail: haoth@
hubu.edu.cn。