Inorganic Chemicals Industry >
Preparation and flame retardant properties of basic magnesium carbonate composite flame retardant
Received date: 2020-08-13
Online published: 2021-02-06
A series of flame retardantcy EVA matrix composites were prepared by mixing and compression molding with silane surface treated basic magnesium carbonate nanosheets,magnesium hydroxide and aluminum hydroxide as composite flame retardants.The mechanical properties,processability and flame retardancy of the composites were investigated by uni-versal tensile test,melt index test,vertical buring test and cone calorimetric test respectively.And the thermal decomposition behavior of the composite flame retardant was studied by thermogravimetric analysis.The results showed that the composite flame retardant can decompose in a wider combustion temperature range with a proper proportion of flame retardant/EVA,which has a better flame retardant effect.And the heat release rate and smoke release rate of the composite flame retardant/EVA composite were significantly reduced to 181.060 kW/m2 and 0.032 m2/s,respectively.In addition,the tensile strength of the composite flame retardant/EVA composite was 9.73 MPa,the elongation at break was 155.07%,and the melt index was 1.00 g per 10 min,which can be used in the wire and cable industry.
Key words： basic magnesium carbonate; EVA; flame retardant; mechanical property; melt index
Nan Zheng , Peng Tian , Xingkun Zhu , Xue Sun , Hongchang Pang , Guiling Ning . Preparation and flame retardant properties of basic magnesium carbonate composite flame retardant[J]. Inorganic Chemicals Industry, 2021 , 53(2) : 47 -50 . DOI: 10.11962/1006-4990.2020-0214
| [1] | Wegner G, Wagemann K. Polymers and the environment-current pro-blems and future research[J]. Advanced Materials, 2010,6(9):629-634. |
| [2] | Huang H H, Tian M, Yang J, et al. Stearic acid surface modifying Mg(OH)2:Mechanism and its effect on properties of ethylene vinyl acetate/Mg(OH)2 composites[J]. Journal of Applied Polymer Scien-ce, 2008,107(5):3325-3331. |
| [3] | Yang J H, Zhang Y, Zhang Y X. Mechanical properties and microst-ructure of HDPE/Al(OH)3/silicone oil composite[J]. Journal of App-lied Polymer Science, 2002,83(9):1896-1903. |
| [4] | 郭如新. 水镁石、水菱镁石和斜方云石资源、加工与应用[J]. 无机盐工业, 2012,44(2):13-16. |
| [5] | Kangal O, Kokkilic O, Burat F. Production of huntite and hydroma-gnesite with flame retardant featured by flotation[J]. Minerals & Me-tallurgical Processing, 2009,26(2):109-113. |
| [6] | Wang Zhengzhou, Qu Baojun, Fan Weicheng, et al. Combustion ch-aracteristics of halogen-free flame-retarded polyethylene containing magnesium hydroxide and some synergists[J]. Journal of Applied Polymer Science, 2001,81(1):206-214. |
| [7] | 张宏鹏, 庞洪昌, 朱行坤, 等. GF对水镁石基阻燃剂阻燃EVA复合材料性能的影响[J]. 工程塑料应用, 2016,44(2):120-123. |
| [8] | Bhattacharjya D, Selvamani T, Mukhopadhyay I. Thermal decompo-sition of hydromagnesite[J]. Journal of Thermal Analysis and Calo-rimetry, 2011.Doi: 10.1007/s10973-011-1656-9. |
| [9] | de Silva R T, Mantilaka M M M G, Ratnayake S P, et al. Nano-MgO reinforced chitosan nanocomposites for high performance packaging applications with improved mechanical,thermal and barrier proper-ties[J]. Carbohydrate Polymers, 2017,157:739-747. |
| [10] | Tian Peng, Han Xiuying, Ning Guiling, et al. Synjournal of porous hierarchical MgO and its superb adsorption properties[J]. ACS Applied Materials and Interfaces, 2013,5:12411-12418. |
/
| 〈 |
|
〉 |