Page 187 - 《精细化工》2022年第7期

第 39 卷第 7 期 精 细 化 工 Vol.39, No.7
2022 年 7 月 FINE CHEMICALS July 2022

橡塑助剂
改性天然沸石对橡胶复合材料性能的影响

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程欣宇 ，刘艳吉 ，李 政 ，付琬璐 ，姜 岩 1,2* ，王 娜 1,2*
（1. 沈阳化工大学 辽宁省特种功能材料合成与制备重点实验室，辽宁 沈阳 110142；2. 沈阳先进涂层
材料产业技术研究院有限公司，辽宁 沈阳 110142）

摘要：为了提高沸石在橡胶中的分散效果，增强沸石与橡胶的界面相互作用，采用硝酸和双-(γ-三乙氧基硅基丙
基)四硫化物对天然沸石（NZ）进行复合改性，制得复合改性沸石（S-HNZ）。然后，将改性沸石与天然橡胶（NR）
混炼制备沸石/天然橡胶复合材料，研究不同改性沸石对天然橡胶性能的影响。采用 XRD、BET、接触角测量仪
及 SEM 对改性前后的 NZ 进行了表征，研究了橡胶复合材料的硫化性能、动态热机械性能及力学性能。结果表
明，经硝酸处理后天然沸石（HNZ）骨架脱铝，且硅烷成功接枝到天然沸石表面。添加 S-HNZ 的橡胶复合材料
（NR/S-HNZ）焦烧时间和正硫化时间均缩短，硫化反应速率加快；另外，与 NR 相比，NR/S-HNZ 的 300%定
伸应力和抗拉强度分别提高了 46.7%和 10.8%；NR/S-HNZ 储能模量（E′）和玻璃化转变温度均高于 NR，表明
经复合改性后，复合材料的交联密度增加，形成较强的交联网络，极大提高了沸石与橡胶大分子链间的界面结
合力。
关键词：天然沸石；酸处理；硅烷化；复合改性；橡胶助剂
中图分类号：TQ332.5 文献标识码：A 文章编号：1003-5214 (2022) 07-1473-08

Effect of modified natural zeolite on properties of rubber composites

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CHENG Xinyu , LIU Yanji , LI Zheng , FU Wanlu , JIANG Yan 1,2* , WANG Na 1,2*
（1. Liaoning Provincial Key Laboratory for Synthesis and Preparation of Special Functional Materials, Shenyang
University of Chemical Technology, Shenyang 110142, Liaoning，China; 2. Shenyang Research Institute of Industrial
Technology for Advanced Coating Materials, Shenyang 110142, Liaoning, China）
Abstract: In order to improve the dispersion of zeolite in rubber and enhance the interfacial interaction
between zeolite and rubber. Natural zeolite (NZ) was modified by nitric acid and bis-(γ-triethoxylsilyl
propyl)tetrasulfide, and the composite modified zeolite (S-HNZ) was obtained. Then, the modified zeolite
and natural rubber (NR) were mixed to prepare NR/S-HNZ composites. The effects of different modified
zeolite on the properties of natural rubber were studied. The zeolite before and after modification were
characterized by XRD, BET, contact angle measurement and SEM. The vulcanization properties, dynamic
thermal mechanical properties and mechanical properties of composites were investigated. The results
showed that the framework of natural zeolite treated by nitri acid (HNZ) was dealuminated, and silane was
successfully grafted onto the surface of HNZ. The scorch time and curing time of the composites
NR/S-HNZ were shortened, and the curing reaction rate was accelerated. In addition, compared with those
of NR, the stress at 300% strain and the tensile strength of NR/S-HNZ were increased by 46.7% and 10.8%,
respectively. And the storage modulus (E′) and glass transition temperature (T g) of NR/S-HNZ were higher
than NR, indicating that after composite modification, the cross-linking density of the composites increased
and a stronger cross-linking network was formed, which greatly improved the interfacial bonding strength
between zeolite and rubber macromolecular chain.

收稿日期：2021-10-29; 定用日期：2022-02-16; DOI: 10.13550/j.jxhg.20211109
基金项目：辽宁省“兴辽英才计划”项目资助（XLYC2005002）；2021 年辽宁省“揭榜挂帅”科技攻关项目（2021JH1/10400091）；
2020 年辽宁省教育厅科学研究经费项目（LZ2020002）；2020 年度辽宁省重点研发计划（2020JH2/10600003）；沈阳市科学技术计划-
重大关键核心技术攻关专项（20-202-1-15）
作者简介：程欣宇（1997—），女，硕士生，E-mail：xinyuchenghh@163.com。联系人：姜 岩（1989—），男，讲师，E-mail：
na_jiangyan@sina.com；王 娜（1977—），女，教授，E-mail：iamwangna@sina.com。