Page 184 - 《精细化工》2022年第6期
P. 184
第 39 卷第 6 期 精 细 化 工 Vol.39, No.6
2022 年 6 月 FINE CHEMICALS June 2022
橡塑助剂
壳聚糖包覆三聚磷酸钠微胶囊-可膨胀石墨协同
阻燃天然/杜仲并用胶
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刘艳吉 ,程欣宇 ,李 政 ,付琬璐 ,李庆鹏 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:以三聚磷酸钠(STPP)为芯材,壳聚糖(CS)为壁材,通过离子凝胶法成功制备了微胶囊 CS@STPP。
采用 SEM、FTIR 及 TG 对所制备的微胶囊形貌、化学结构和热性能进行了表征。将 CS@STPP 与可膨胀石墨(EG)
以一定比例添加到天然/杜仲(NR/EUG)并用胶中,探究 CS@STPP 与 EG 之间的协同作用对 NR/EUG 阻燃性
能的影响。采用极限氧指数(LOI)、垂直燃烧测试(UL-94)、锥形量热仪、拉曼光谱、SEM 和电子万能试验机
对 NR/EUG 并用胶的阻燃性能进行了分析。结果表明,当 m(CS@STPP)∶m(EG) = 4∶1 时,制备的 NR/EUG 并
用胶(记为 FRBR-5)阻燃效果最优,这归因于 CS@STPP 与 EG 的协同作用使形成的炭层结构更稳定致密、连
续性更好。此外,FRBR-5 的燃烧性能显著降低,其 LOI 达到 28.4%,UL-94 达到 V-0 等级,最大热释放速率为
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471.7 kW/m 。
关键词:壳聚糖;三聚磷酸钠;微胶囊;天然橡胶;杜仲橡胶;橡塑助剂
中图分类号:TQ332.5 文献标识码:A 文章编号:1003-5214 (2022) 06-1250-07
Chitosan coated sodium triphosphate microcapsules-expandable graphite
synergistic flame retardant natural rubber/eucommia ulmoides gum
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LIU Yanji , CHENG Xinyu , LI Zheng , FU Wanlu , LI Qingpeng , WANG Na 1,2*
(1. Liaoning Provincial Key Laboratory for Preparation and Application 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: Sodium tripolyphosphate (STPP) and chitosan (CS) were used as core material and wall material
to prepare microcapsules CS@STPP by ionic gel method. The surface morphology, chemical structure and
thermal property of microcapsules were characterized by SEM, FTIR and TG. The effect of synergistic
effect between CS@STPP and expandable graphite (EG) on flame retardant performance of natural
rubber/eucommia ulmoides gum (NR/EUG) was investigated by adding CS@STPP and EG to NR/EUG in
a certain proportion. The flame retardancy of NR/EUG was analyzed by limiting oxygen index (LOI),
vertical combustion test (UL-94), cone calorimeter, Raman spectroscopy, SEM and electronic universal
testing machine. The results showed that the prepared NR/EUG with m(CS@STPP)∶m(EG) = 4∶1
(denoted as FRBR-5) had the best flame retardant effect, which was attributed to the synergistic effect of
CS@STPP and EG to the formation of more stable and compact carbon layer structure and better continuity.
In addition, the combustion performance of FRBR-5 was significantly reduced, with LOI of 28.4% and
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UL-94 reaching V-0 rating, and the maximum heat release rate was 471.7 kW/m .
Key words: chitosan; sodium triphosphate; microcapsules; natural rubber; eucommia ulmoides gum; rubber
and plastics auxiliaries
收稿日期:2021-11-29; 定用日期:2022-02-08; DOI: 10.13550/j.jxhg.20211216
基金项目:国家自然科学基金(51973124);功能性高端镁质化工品生产技术及示范应用(2020YFC1909302);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);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:刘艳吉(1995—),男,硕士生,E-mail:llyyjj3611@163.com。联系人:王 娜(1977—),女,教授,E-mail:iamwangna@sina.com。