微孔发泡聚碳酸酯-聚烯烃弹性体共混物

doi:10.11896/cldb.19040182

材料导报

2020, Vol. 34

Issue (10): 10197-10200 https://doi.org/10.11896/cldb.19040182

高分子与聚合物基复合材料

微孔发泡聚碳酸酯-聚烯烃弹性体共混物

龚莉雯, 郑晓平, 吴志昂, 王璠, 杨子程, 张利, 包锦标

宁波大学材料科学与化学工程学院,宁波 315211

Preparation of Microcellular Foam for Polycarbonate-Polyolefin Elastomer Blends

GONG Liwen, ZHENG Xiaoping, WU Zhi'ang, WANG Fan, YANG Zicheng, ZHANG Li, BAO Jinbiao

School of Material Science and Chemical Engineering, Ningbo University, Ningbo 315211, China

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摘要采用超临界二氧化碳间歇发泡法成功制备了具有多孔洞、开孔结构的聚碳酸酯-聚烯烃弹性体(PC/POE)共混物硬质发泡材料。通过扫描电镜观察PC/POE共混物形貌,发现POE相以球状颗粒形态均匀地分布在PC基体内,呈现典型的“海-岛”结构,且随着POE含量的增加,球状颗粒尺寸不断增大。系统分析了POE含量、CO₂饱和压力以及饱和温度对PC/POE发泡材料泡孔形貌和开孔率的影响,并对PC/POE共混物发泡的开孔机理进行解释。结果表明,当POE含量近20%(质量分数)、饱和压力在15 MPa以上、温度达150 ℃就可得到明显的开孔结构;尤其当压力升至18 MPa时成核点最多,材料的开孔率最大。

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关键词: 聚碳酸酯超临界二氧化碳开孔结构

Abstract: In this paper, polycarbonate-polyolefin(PC/POE) elastomer blend rigid foaming materials with multi-hole open-cell structure were successfully prepared via supercritical carbon dioxide intermittent foaming method. The morphology of PC/POE blends was observed by scanning electron microscopy. It was found that the POE particles were evenly distributed in the PC matrix in the form of spherical particles, showing a typical “island-sea” structure. The size of spherical particles increased with the increase of POE content. Moreover, the effects of POE content, CO₂ saturation pressure and saturation temperature on the cell morphology and porosity of PC/POE foams were systematically studied. The results show that the open-cell pore structure is obvious when POE content is nearly 20wt%, saturation pressure is above 15 MPa, the temperature reaches 150 ℃, especially when the pressure rises to 18 MPa, the nucleation point is the largest and the pore opening rate is the largest.

Key words: polycarbonates supercritical carbon dioxide open-cell structure

发布日期: 2020-04-26

ZTFLH:

TQ328

基金资助: 宁波市自然科学基金(2017A610045);王宽诚幸福基金

通讯作者: 包锦标,宁波大学材料科学与化学工程学院,副教授。2012年毕业于法国洛林大学,获材料博士学位。同年加入宁波大学工作至今,主要从事聚合物轻量化微孔材料的绿色制备与应用、高分子成型加工等研究。在国内外重要期刊发表文章多篇,申请发明专利多项。baojinbiao@nbu.edu.cn

作者简介: 龚莉雯,2016年6月毕业于华东理工大学,获得工程学士学位。于2017年9月至2020年6月在宁波大学材料科学与化学工程学院攻读硕士研究生,主要从事高分子材料加工领域研究。

引用本文:

龚莉雯, 郑晓平, 吴志昂, 王璠, 杨子程, 张利, 包锦标. 微孔发泡聚碳酸酯-聚烯烃弹性体共混物[J]. 材料导报, 2020, 34(10): 10197-10200.
GONG Liwen, ZHENG Xiaoping, WU Zhi'ang, WANG Fan, YANG Zicheng, ZHANG Li, BAO Jinbiao. Preparation of Microcellular Foam for Polycarbonate-Polyolefin Elastomer Blends. Materials Reports, 2020, 34(10): 10197-10200.

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http://www.mater-rep.com/CN/10.11896/cldb.19040182 或 http://www.mater-rep.com/CN/Y2020/V34/I10/10197

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