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吸收剂量率对电子束辐照的高密度聚乙烯基碳纤维增强热塑性塑料力学性能及纤维-基体相互作用的影响

Influences of Absorbed Dose Rate on the Mechanical Properties and Fiber-Matrix Interaction of High-Density Polyethylene-Based Carbon Fiber Reinforced Thermoplastic Irradiated by Electron-Beam.

作者信息

Park Se Kye, Choi Dong Yun, Choi Du Young, Lee Dong Yun, Yoo Seung Hwa

机构信息

Daegyeong Division, Korea Institute of Industrial Technology, Yeongcheon 38822, Gyeongsangbuk-do, Korea.

Department of Polymer Science and Engineering, Kyungpook National University, Daegu 41566, Gyeongsangbuk-do, Korea.

出版信息

Polymers (Basel). 2020 Dec 16;12(12):3012. doi: 10.3390/polym12123012.

DOI:10.3390/polym12123012
PMID:33339384
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7765887/
Abstract

In this study, a high-density polyethylene (HDPE)-based carbon fiber-reinforced thermoplastic (CFRTP) was irradiated by an electron-beam. To assess the absorbed dose rate influence on its mechanical properties, the beam energy and absorbed dose were fixed, while the absorbed dose rates were varied. The tensile strength (TS) and Young's modulus (YM) were evaluated. The irradiated CFRTP TS increased at absorbed dose rates of up to 6.8 kGy/s and decreased at higher rates. YM showed no meaningful differences. For CFRTPs constituents, the carbon fiber (CF) TS gradually increased, while the HDPE TS decreased slightly as the absorbed dose rates increased. The OH intermolecular bond was strongly developed in irradiated CFRTP at low absorbed dose rates and gradually declined when increasing those rates. X-ray photoelectron spectroscopy analysis revealed that the oxygen content of irradiated CFRTPs decreased with increasing absorbed dose rate due to the shorter irradiation time at higher dose rates. In conclusion, from the TS viewpoint, opposite effects occurred when increasing the absorbed dose rate: a favorable increase in CF TS and adverse decline of attractive hydrogen bonding interactions between HDPE and CF for CFRTPs TS. Therefore, the irradiated CFRTP TS was maximized at an optimum absorbed dose rate of 6.8 kGy/s.

摘要

在本研究中，对一种基于高密度聚乙烯（HDPE）的碳纤维增强热塑性塑料（CFRTP）进行了电子束辐照。为评估吸收剂量率对其力学性能的影响，固定了束流能量和吸收剂量，同时改变吸收剂量率。对拉伸强度（TS）和杨氏模量（YM）进行了评估。辐照后的CFRTP的TS在吸收剂量率高达6.8 kGy/s时增加，而在更高剂量率时下降。YM没有显示出有意义的差异。对于CFRTP的组分，随着吸收剂量率的增加，碳纤维（CF）的TS逐渐增加，而HDPE的TS略有下降。在低吸收剂量率下辐照的CFRTP中，OH分子间键强烈形成，而随着剂量率增加逐渐下降。X射线光电子能谱分析表明，由于在较高剂量率下辐照时间较短，辐照后的CFRTP的氧含量随吸收剂量率增加而降低。总之，从TS的角度来看，增加吸收剂量率时会产生相反的效果：CF的TS有利增加，而对于CFRTP的TS，HDPE与CF之间有吸引力的氢键相互作用不利下降。因此，辐照后的CFRTP的TS在6.8 kGy/s的最佳吸收剂量率下达到最大值。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/71ae/7765887/8c99191a01d0/polymers-12-03012-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/71ae/7765887/ac9268357590/polymers-12-03012-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/71ae/7765887/5328a14044b5/polymers-12-03012-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/71ae/7765887/ecb39d08c129/polymers-12-03012-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/71ae/7765887/5c7efa8c6408/polymers-12-03012-g004.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/71ae/7765887/31ab329110f8/polymers-12-03012-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/71ae/7765887/262bc9440dcc/polymers-12-03012-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/71ae/7765887/2eea0fd0b718/polymers-12-03012-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/71ae/7765887/5d4194201b17/polymers-12-03012-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/71ae/7765887/8c99191a01d0/polymers-12-03012-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/71ae/7765887/ac9268357590/polymers-12-03012-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/71ae/7765887/5328a14044b5/polymers-12-03012-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/71ae/7765887/ecb39d08c129/polymers-12-03012-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/71ae/7765887/5c7efa8c6408/polymers-12-03012-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/71ae/7765887/47c9c382323a/polymers-12-03012-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/71ae/7765887/31ab329110f8/polymers-12-03012-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/71ae/7765887/262bc9440dcc/polymers-12-03012-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/71ae/7765887/2eea0fd0b718/polymers-12-03012-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/71ae/7765887/5d4194201b17/polymers-12-03012-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/71ae/7765887/8c99191a01d0/polymers-12-03012-g010.jpg

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