PDF
Full
Outline
On the basis of filling magnesium hydroxide sulfate hydrates（MHSH）whisker and aluminium trihydrate (ATH) blends, EVA/LDPE composites were prepared by adding borax, zinc borate (ZnB) and microencapsulated red phosphorus (MRP), respectively. The effects of multiple synergistic flame retardant containing MHSH whisker on the flame retardancy, mechanical and electrical properties of EVA/LDPE composites were analyzed by thermogravimetric analyzer, cone calorimeter, limiting oxygen index (LOI) meter, scanning electron microscope (SEM), energy dispersive spectrometer (EDS), universal tensile machine, AC medium strength tester, and high resistance meter. The results show that the initial decomposition temperature Td, the peak temperature of weight loss rate Tp2 and Tp3, and the residual rate at 800℃ of EVA/LDPE composites are significantly increased by adding MRP. Compared with the samples adding borax and zinc borate, the samples adding MRP show the best flame retardancy, the peak value of heat release rate curve and total heat release value decreases to 219.86 kW/m2 and 19.38 MJ/m2, respectively; and the time to ignition (TTI) and LOI increases to 59 s and 28.4%, respectively; during the combustion process, the carbon layer of the sample is continuous and compact, without melting and dropping. The mechanism of MRP cooperating with MHSH whisker and ATH to improve the flame retardancy of EVA/LDPE composite is due to the synergistic effect of gas phase flame retarding and condensed phase flame retarding. The addition of MRP reduces the elongation at break of the composites, but they still have good electrical insulation properties.
PDF
150
71
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
关闭全屏
No. 86 Xueyuan South Road, Haidian District, Beijing
010-62199257
qkjq@cast.org.cn
Copyright © 2025 China Association for Science and Technology. All rights reserved. For all open access content, the relevant licensing terms apply.
Sponsored by the Office of the Leading Group for Cybersecurity and Informatization of CAST, and supported by Science and Technology Review Publishing House
