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Wang K, Chen L, Gao Y, Jiang D, Quan Y, Yan S. Effect of morphology development on the low‐temperature tensile properties of
PP
/
POE
blends. J Appl Polym Sci 2022. [DOI: 10.1002/app.52192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Kairui Wang
- Key Laboratory of High Performance Polymer Materials & Technology of Ministry of Education School of Chemistry and Chemical Engineering, Nanjing University Nanjing China
| | - Lei Chen
- Key Laboratory of High Performance Polymer Materials & Technology of Ministry of Education School of Chemistry and Chemical Engineering, Nanjing University Nanjing China
| | - Yun Gao
- Key Laboratory of High Performance Polymer Materials & Technology of Ministry of Education School of Chemistry and Chemical Engineering, Nanjing University Nanjing China
| | - Dengchao Jiang
- Key Laboratory of High Performance Polymer Materials & Technology of Ministry of Education School of Chemistry and Chemical Engineering, Nanjing University Nanjing China
| | - Yiwu Quan
- Key Laboratory of High Performance Polymer Materials & Technology of Ministry of Education School of Chemistry and Chemical Engineering, Nanjing University Nanjing China
| | - Shanzhi Yan
- Research and development center Jiangsu Jinsanli Power Equipment Industrial Co. Nanjing China
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Jia P, Yu X, Lu J, Zhou X, Yin Z, Tang G, Lu T, Guo L, Song L, Wang B, Hu Y. The Re 2Sn 2O 7 (Re = Nd, Sm, Gd) on the enhancement of fire safety and physical performance of Polyolefin/IFR cable materials. J Colloid Interface Sci 2021; 608:1652-1661. [PMID: 34742080 DOI: 10.1016/j.jcis.2021.10.114] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Revised: 10/16/2021] [Accepted: 10/18/2021] [Indexed: 11/27/2022]
Abstract
Polyolefin (PO) cables used in confined spaces need to have low smoke, low heat release, low toxic gas release and excellent physical properties. In this work, a series of rare earth stannates Re2Sn2O7 (RES, Re = Nd, Sm, Gd) with high temperature catalytic performance were prepared by hydrothermal method for synergistic flame retardant PO/IFR. The flame retardancy, heat release, smoke density, toxic gas release and physical properties of PO composites were thoroughly studied in detail. The RES could enhance the vertical burning rating and the limiting oxygen index (LOI) of PO/IFR composites. Moreover, the residual char of the thermogravimetric analysis increased from 9.7% to 11.4 wt% after the RES added in PO/IFR system. Interestingly, the PO/IFR system containing Gd2Sn2O7 exhibits the lowest peak heat release rate of 233.7 kW/m2. Excellent flame resistance due to the formation of a complete and compact protective char layer. In addition, the toxic release of PO during combustion is also effectively reduced by introducing the RES. The tube furnace combustion test shows that the emission of carbon oxide (CO) and hydrogen cyanide (HCN) of PO/IFR/Gd2Sn2O7 are the lowest. It can be attributed to the catalytic effect of rare earth elements and the blocking effect of the dense char layer. In addition, compared with the PO/IFR composites, the PO/IFR/RES system demonstrate higher mechanical properties and volume resistivity. Therefore, the addition of RES has a positive effect on improving the physical properties and fire safety properties of the PO/IFR cable composites, especially suitable for using in confined spaces.
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Affiliation(s)
- Pengfei Jia
- State Key Laboratory of Fire Science, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, PR China
| | - Xiaoli Yu
- State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization, Baotou Research Institute of Rare Earths, Baotou 014030, China
| | - Jingyi Lu
- State Key Laboratory of Fire Science, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, PR China
| | - Xiaodong Zhou
- State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization, Baotou Research Institute of Rare Earths, Baotou 014030, China
| | - Zhenting Yin
- State Key Laboratory of Fire Science, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, PR China
| | - Gang Tang
- School of Architecture and Civil Engineering, Anhui University of Technology, Ma' anshan, Anhui 243002, People's Republic of China
| | - Tingting Lu
- State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization, Baotou Research Institute of Rare Earths, Baotou 014030, China
| | - Liying Guo
- State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization, Baotou Research Institute of Rare Earths, Baotou 014030, China
| | - Lei Song
- State Key Laboratory of Fire Science, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, PR China
| | - Bibo Wang
- State Key Laboratory of Fire Science, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, PR China.
| | - Yuan Hu
- State Key Laboratory of Fire Science, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, PR China.
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Kokalis CCA, Kontargyri VT, Gonos IF. A Proposal for the Evaluation of HTV Silicone Rubber Composite Insulators. Polymers (Basel) 2021; 13:polym13213610. [PMID: 34771167 PMCID: PMC8587044 DOI: 10.3390/polym13213610] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Revised: 10/17/2021] [Accepted: 10/18/2021] [Indexed: 11/16/2022] Open
Abstract
This paper describes in detail a step-by-step methodology for obtaining specimens from the housing material (high temperature vulcanized (HTV) silicone rubber with aluminum trihydrate (ATH) filler) of composite insulators (finished products), for five well known and commonly used tests. The aim of the paper is to render practical clarifications and additions to the instructions for five tests on composite insulators provided by international standards. Additionally, the ranges of the results of these tests are presented. More specifically, shore A hardness measurement, tensile strength and elongation at break test, tear strength test, density measurement and inclined plane test were conducted on the housing material of ten, new, unaged medium voltage composite insulators made by six different manufacturers. The results of these tests are presented as a contribution to the existing knowledge and a comparative study of corresponding results of previous investigations is performed. The presented procedures for specimens’ preparation, as well as the results (arithmetical ranges), could be used as guidelines for future testing on the housing material (HTV silicone rubber with ATH filler) of composite insulators, either by researchers and manufacturers, during laboratory testing and material development processes, or by customers (distribution and transmission networks owners), during batch acceptance tests.
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