Analysis on properties of water-based fire-retardant nano-coatingsa

被引:6
作者
Changs, Ho [1 ]
Kuo, Zi-How [1 ]
Tsai, Kuang-Chung [3 ]
Chen, Tien-Li [2 ]
机构
[1] Natl Taipei Univ Technol, Dept Mech Engn, 1 Sec 3,Chung Hsiao E Rd, Taipei 106, Taiwan
[2] Natl Taipei Univ Technol, Dept Ind Design, Taipei 10608, Taiwan
[3] Natl Kaohsiung First Univ Sci & Technol, Dept Safety Hlth & Environm Engn, Kaohsiung 811, Taiwan
来源
ADVANCED MATERIALS AND PROCESSES, PTS 1-3 | 2011年 / 311-313卷
关键词
flame retardant; thermal stability; multiwall carbon nanotube (MWNT); nano- zinc borate (ZB); FLAME; EVA;
D O I
10.4028/www.scientific.net/AMR.311-313.1985
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The study explores the effects of the flame-retardant properties of nano-particles on water-based fire-retardant coatings, which include the effects on thermal stability and combustion properties. The coating used by the paper is acrylatc resin (VAC), which is added with 3 basic components, including fire-retardant ammonium polyphosphate, pentaerythritol and melamine (APP-PER-MEL), to form an itumescent fire retardant (IFR). Then the fire retardent is added with magnesium hydroxide (Mg(OH)(2), MH) nano-particles, multiwall carbon nanotubes (MWNT) and zinc borate (ZB) nano-powders of different concentrations, to form water-based fire-retardant coatings. By adjusting and controlling the concentration ratios of flame retardant to the 3 kinds of nano-particles with different profiles, the study analyzes the fire-retardant multiplying effect of nano-particles on water-based coatings. The nano-coatings mixed in special proportion are coated on plywood. Through thermogeavimetric analyzer (TGA) and cone calorimeter (CCT), the study inspects the thermal stability and combustion properties of water-based fire-retardant nano-coatings. The experimental results show that when the fire-retardant nano-coating composed of MH of concentration 28% and MWNT of concentration 2% is compared with the fire-retardant coating added with flame retardant only, the amount of residue can be increased by around 80% at combustion temperature 580 degrees C. Besides, when the fire-retardant nano-coating composed of MH of weight concentration 28% and MWNT of weight concentration 2% is compared with the fire-retardant coating added with flame retardant only, the maximum heat release can be decreased by about 15%. The time required for this fire-retardant nano-coating to achieve maximum heat release is delayed by around 70 seconds when compared with other samples. Besides, the char-layered structure formed during thermal decomposition of nano-coating is more compact than the char-layered structure of water-based coating composed of the flame-retardant APP-PER-MEL components only. Therefore, nano-coatings can effectively decrease the transfer of heat and inflammable volatiles to plywood surface, and can enhance the flame retardant performance of plywood.
引用
收藏
页码:1985 / +
页数:2
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