伽马射线辐照对聚丙烯超临界二氧化碳发泡的影响

杨晨光; 赵全; 王谋华; 邢哲; 吴国忠

doi:10.11889/j.1000-3436.2018.rrj.36.010301

您当前的位置：

首页 >

文章列表页 >

伽马射线辐照对聚丙烯超临界二氧化碳发泡的影响

辐射化学 | 更新时间：2021-12-10

- 伽马射线辐照对聚丙烯超临界二氧化碳发泡的影响
- Gamma-ray irradiation effects on scCO₂ foaming behavior of polypropylene
- 辐射研究与辐射工艺学报 2018年36卷第1期
- 作者机构：
  
  1.中国科学院上海应用物理研究所嘉定园区上海 201800
  2.中国科学院大学北京 100049
- 作者简介：
  
  [ "杨晨光, 男, 1988年4月出生, 2014年6月于郑州大学获得学士学位, 现为中国科学院上海应用物理研究所无机化学专业博士研究生, E-mail:yangchenguang@sinap.ac.cn", "YANG Chenguang (male) was born in April 1988, and received his bachelor's degree from Zhengzhou University in June 2014. Now he is a Ph.D. candidate at Shanghai Institute of Applied Physics, Chinese Academy of Sciences, University of Chinese Academy Sciences. E-mail: yangchenguang@sinap.ac.cn" ]
  吴国忠, 男, 博士, 研究员, E-mail:wuguozhong@sinap.ac.cnPh.D. WU Guozhong, professor, E-mail: wuguozhong@sinap.ac.cn
- 基金信息：
  
  国家自然科学基金(11079048)
- DOI：10.11889/j.1000-3436.2018.rrj.36.010301
  中图分类号：
扫描看全文
杨晨光, 赵全, 王谋华, 等. 伽马射线辐照对聚丙烯超临界二氧化碳发泡的影响[J]. 辐射研究与辐射工艺学报, 2018,36(1):010301-9.

Chenguang YANG, Quan ZHAO, Mouhua WANG, et al. Gamma-ray irradiation effects on scCO₂ foaming behavior of polypropylene[J]. Journal of Radiation Research and Radiation Processing, 2018,36(1):010301-9.
杨晨光, 赵全, 王谋华, 等. 伽马射线辐照对聚丙烯超临界二氧化碳发泡的影响[J]. 辐射研究与辐射工艺学报, 2018,36(1):010301-9. DOI： 10.11889/j.1000-3436.2018.rrj.36.010301.

Chenguang YANG, Quan ZHAO, Mouhua WANG, et al. Gamma-ray irradiation effects on scCO₂ foaming behavior of polypropylene[J]. Journal of Radiation Research and Radiation Processing, 2018,36(1):010301-9. DOI： 10.11889/j.1000-3436.2018.rrj.36.010301.

摘要

系统研究了γ射线辐照改性聚丙烯（PP）的超临界二氧化碳（scCO,2,）发泡行为。聚丙烯样品的制备采用两种辐照方法：（I）PP粒子热压成型后γ射线辐照（Sequence I，SI）；（II）PP粒子γ射线辐照后热压成型（Sequence II，SII）。利用scCO,2,作为物理发泡剂对两类样品进行间歇发泡。结果表明：γ射线辐照改性PP的熔点和结晶度随吸收剂量的增加而降低，其结晶度从51%下降到40%；在低频区，辐照后PP黏度轻微下降，而PP（SII）样品下降更为明显；PP（SI）发泡片材微孔尺寸变均匀，发泡率得到大幅提高，在40和50 kGy，不存在未发泡区域，并且拉伸性能从3.9 MPa增加到7.1 MPa；在最佳吸收剂量30 kGy时，发泡温度下降约5 ℃，发泡温度窗口从4 ℃增加到6~8℃。SI方式可以降低发泡温度，扩大发泡温度窗口，更有利于PP的scCO,2,发泡。

Abstract

The effects of γ-ray irradiation on the supercritical carbon dioxide (scCO,2,) foaming behavior of polypropylene (PP) were systematically studied. Sheets of PP were prepared through two different methods: irradiation after hot pressing (Sequence I, SI), and hot pressing after irradiation (Sequence II, SII). Carbon dioxide was used as the physical foaming agent. It was found that the crystallinities (51% to 40%) and melting points decreased with the increasing absorbed doses. At low frequency, the complex viscosity of PP decreased after irradiation, and the decrease was more pronounced for PP(SII) than PP(SI). The PP(SI) foam possessed an uniform cell size and a higher foaming rate, and its tensile strength increased from 3.9 MPa to 7.1 MPa compared with those of pure PP and PP(SII). In addition, at the optimum absorbed dose of 30 kGy, the suitable foaming temperature was around 145~153 ℃, and a wider foaming temperature (6~8 ℃) was obtained compared with the original 4 ℃. Therefore, irradiation after hot pressing (,i,.,e,., SI) was considered more suitable for the foaming of irradiated PP, resulting in a higher tensile strength and a wider foaming temperature window.

关键词

γ射线辐照聚丙烯（PP）超临界二氧化碳发泡（scCO2）拉伸强度流变性能

Keywords

γ-ray irradiationPolypropyleneSupercritical CO2 foamingTensile strengthRheological property

references

K W Suh , C P Park , M J Maurer , 等 . Lightweight cellular plastics . Advanced Materials , 2000 . 12 (23 ):1779 -1789 . DOI:10.1002/1521-4095(200012)12:23<1779::AID-ADMA1779>3.0.CO;2-3http://doi.org/10.1002/1521-4095(200012)12:23<1779::AID-ADMA1779>3.0.CO;2-3 .

Z M Xu , X L Jiang , T Liu , 等 . Foaming of polypropylene with supercritical carbon dioxide . Journal of Supercritical Fluids , 2007 . 41 (2 ):299 -310 . DOI:10.1016/j.supflu.2006.09.007http://doi.org/10.1016/j.supflu.2006.09.007 .

C Yang , Z Xing , G Wu , 等 . Supercritical CO2 foaming of radiation crosslinked polypropylene/high-density polyethylene blend: cell structure and tensile property . Radiation Physics and Chemistry , 2017 . 141 276 -283 . DOI:10.1016/j.radphyschem.2017.07.028http://doi.org/10.1016/j.radphyschem.2017.07.028 .

J Stange , H Muenstedt . Rheological properties and foaming behavior of polypropylenes with different molecular structures . Journal of Rheology , 2006 . 50 (6 ):907 -923 . DOI:10.1122/1.2351880http://doi.org/10.1122/1.2351880 .

K Taki , T Yanagimoto , E Funami , 等 . Visual observation of CO2 foaming of polypropylene-clay nanocomposites . Polymer Engineering and Science , 2004 . 44 (6 ):1004 -1011 . DOI:10.1002/pen.20093http://doi.org/10.1002/pen.20093 .

P Zhang , N Q Zhou , Q F Wu , 等 . Microcellular foaming of PE/PP blends . Journal of Applied Polymer Science , 2007 . 104 (6 ):4149 -4159 . DOI:10.1002/app.26071http://doi.org/10.1002/app.26071 .

E Reverchon , S Cardea . Production of controlled polymeric foams by supercritical CO2 . Journal of Supercritical Fluids , 2007 . 40 (1 ):144 -152 . DOI:10.1016/j.supflu.2006.04.013http://doi.org/10.1016/j.supflu.2006.04.013 .

S Doroudiani , M T Kortschot . Polystyrene foams. I. Processing-structure relationships . Journal of Applied Polymer Science , 2003 . 90 (5 ):1412 -1420 . DOI:10.1002/app.12804http://doi.org/10.1002/app.12804 .

钟亚林 , 黄汉雄 . 基于相形态的微孔发泡PP/POE共混物泡孔结构调控 . 高分子学报 , 2015 . (6 ):720 -726 . DOI:10.11777/j.issn1000-3304.2015.14406http://doi.org/10.11777/j.issn1000-3304.2015.14406 .

Yalin ZHONG , Hanxiong HUANG . Cellular structure manipulation of microcellular PP/POE blends based on phase morphology . Acta Polymerica Sinica , 2015 . (6 ):720 -726 . DOI:10.11777/j.issn1000-3304.2015.14406http://doi.org/10.11777/j.issn1000-3304.2015.14406 .

H A Khonakdar , S H Jafari , U Wagenknecht , 等 . Effect of electron-irradiation on cross-link density and crystalline structure of low-and high-density polyethylene . Radiation Physics and Chemistry , 2006 . 75 (1 ):78 -86 . DOI:10.1016/j.radphyschem.2005.05.014http://doi.org/10.1016/j.radphyschem.2005.05.014 .

C Yang , X Zhe , G Wu , 等 . Radiation effects on the foaming of atactic polypropylene with supercritical carbon dioxide . Radiation Physics and Chemistry , 2017 . 131 35 -40 . DOI:10.1016/j.radphyschem.2016.10.018http://doi.org/10.1016/j.radphyschem.2016.10.018 .

C Yang , M Wang , G Wu , 等 . Supercritical CO2 foaming of radiation cross-linked isotactic polypropylene in the presence of TAIC . Molecules , 2016 . 21 (12 ):1660 DOI:10.3390/molecules21121660http://doi.org/10.3390/molecules21121660 .

C Yang , Z Xing , G Wu , 等 . A strategy for the preparation of closed-cell and crosslinked polypropylene foam by supercritical CO2 foaming . Journal of Applied Polymer Science , 2017 . 135, 45809 DOI:10.1002/APP.45809http://doi.org/10.1002/APP.45809 .

刘太闯 , 郑云生 , 李令尧 , 等 . 电子束辐照交联制备聚丙烯发泡片材 . 中国塑料 , 2006 . 20 (9 ):49 -52 . DOI:10.19491/j.issn.1001-9278.2006.09.013http://doi.org/10.19491/j.issn.1001-9278.2006.09.013 .

Taichuang LIU , Yunsheng ZHENG , Lingrao LI , 等 . Polypropylene foam sheet prepared by electron-beam irradiation . China Plastics , 2006 . 20 (9 ):49 -52 . DOI:10.19491/j.issn.1001-9278.2006.09.013http://doi.org/10.19491/j.issn.1001-9278.2006.09.013 .

李小虎, 程勇, 王谋华, 等.辐射增敏交联聚丙烯片材的超临界二氧化碳发泡[J].功能高分子学报, 2015, 28(4): 367-372. DOI: 10.14133/j.cnki.1008-9357.2015.04. 006.

LI Xiaohu, CHENG Yong, WANG Mouhua, et al. Foamability of sensitized radiation cross-linked polypropylene sheets with supercritical carbon dioxide as the foaming agent[J]. 2015, 28(4): 367-372. DOI: 10.14133/j.cnki.1008-9357.2015.04. 006.

邢哲 , 吴国忠 , 黄师荣 , 等 . 用超临界二氧化碳发泡制备辐射交联聚乙烯微孔材料 . 辐射研究与辐射工艺学报 , 2008 . 26 (4 ):193 -198 . http://d.old.wanfangdata.com.cn/Periodical/fsyjyfsgyxb200804001http://d.old.wanfangdata.com.cn/Periodical/fsyjyfsgyxb200804001, .

Zhe XING , Guozhong WU , Shirong HUANG , 等 . Preparation of microcellular cross-linking polyethylene foams using supercritical CO2 . Journal of Radiation Research and Radiatiion Processing , 2008 . 26 (4 ):193 -198 . http://d.old.wanfangdata.com.cn/Periodical/fsyjyfsgyxb200804001http://d.old.wanfangdata.com.cn/Periodical/fsyjyfsgyxb200804001, .

M Nofar , A Ameli , C B Park . Development of polylactide bead foams with double crystal melting peaks . Polymer , 2015 . 69 83 -94 . DOI:10.1016/j.polymer.2015.05.048http://doi.org/10.1016/j.polymer.2015.05.048 .

Y Badr , Z I Ali , A H Zahran , 等 . Characterization of gamma irradiated polyethylene films by DSC and X-ray diffraction techniques . Polymer International , 2000 . 49 (12 ):1555 -1560 . DOI:10.1002/1097-0126(200012)49:12<1555::AID-PI478>3.0.CO;2-Rhttp://doi.org/10.1002/1097-0126(200012)49:12<1555::AID-PI478>3.0.CO;2-R .

Z Xing , G Wu , S Huang , 等 . Preparation of microcellular cross-linked polyethylene foams by a radiation and supercritical carbon dioxide approach . Journal of Supercritical Fluids , 2008 . 47 (2 ):281 -289 . DOI:10.1016/j.supflu.2008.08.009http://doi.org/10.1016/j.supflu.2008.08.009 .

W L Ooliani , D F Parra , D M Fermino , 等 . Study of gel formation by ionizing radiation in polypropylene . Radiation Physics and Chemistry , 2013 . 84 20 -25 . DOI:10.1016/j.radphyschem.2012.06.053http://doi.org/10.1016/j.radphyschem.2012.06.053 .

G Ji , W Zhai , D Lin , 等 . Microcellular foaming of poly(lactic acid)/silica nanocomposites in compressed CO2: critical influence of crystallite size on cell morphology and foam expansion . Industrial & Engineering Chemistry Research , 2013 . 52 (19 ):6390 -6398 . http://journals.sagepub.com/doi/abs/10.1177/0021955X16633644http://journals.sagepub.com/doi/abs/10.1177/0021955X16633644, .

A Wong , Y Guo , C B Park . Fundamental mechanisms of cell nucleation in polypropylene foaming with supercritical carbon dioxide—effects of extensional stresses and crystals . The Journal of Supercritical Fluids , 2013 . 79 142 -151 . DOI:10.1016/j.supflu.2013.02.013http://doi.org/10.1016/j.supflu.2013.02.013 .

J B Bao , A J R Nyantakyi , G S Weng , 等 . Tensile and impact properties of microcellular isotactic polypropylene (PP) foams obtained by supercritical carbon dioxide . Journal of Supercritical Fluids , 2016 . 111 63 -73 . DOI:10.1016/j.supflu.2016.01.016http://doi.org/10.1016/j.supflu.2016.01.016 .

L Wang , S Ishihara , Y Hikima , 等 . Unprecedented development of ultrahigh expansion injection-molded polypropylene foams by introducing hydrophobic-modified cellulose nanofibers . ACS Applied Materials & Interfaces , 2017 . 9 (11 ):9250 -9254 . DOI:10.1021/acsami.7b01329http://doi.org/10.1021/acsami.7b01329 .

陈祥辉 , 黄汉雄 . 低含量聚乳酸对微孔发泡聚丁二酸丁二醇酯泡孔结构的改善 . 高分子学报 , 2017 . (8 ):1331 -1338 . DOI:10.11777/j.issn1000-3304.2017.17003http://doi.org/10.11777/j.issn1000-3304.2017.17003 .

Xianghui CHEN , Hanxiong HUANG . Improving cellular structure of microcellular poly (butylene succinate) via adding low content of poly (lactic acid) . Acta Poly-merica Sinica , 2017 . (8 ):1331 -1338 . DOI:10.11777/j.issn1000-3304.2017.17003http://doi.org/10.11777/j.issn1000-3304.2017.17003 .

浏览量

下载量

CSCD

文章被引用时，请邮件提醒。

提交

工具集

关联资源

γ 射线辐照及粒径对芦苇秸秆酶解发酵的影响

载银钙基有机骨架材料的制备及其对Xe/Kr的吸附分离性能

辐射交联超高分子量聚乙烯热稳定性及蠕变性能

γ射线对聚丙烯发泡材料亲油疏水性能的影响

⁶⁰Coγ射线辐照食品的工艺优化