Effect of Halogen-Free Flame Retardants on the Fire Retardancy of Polypropylene

• Main Authors: Chih-Wei Hsu, 許智為
• Other Authors: none
• Format: Others
• Language: zh-TW
• Published: 2006
• Online Access: http://ndltd.ncl.edu.tw/handle/79866924855933450234

碩士 === 逢甲大學 === 材料與製造工程所 === 94 === The study is designed using Taguchi Method and Design of Experiment. Six series of halogen-free flame-retarded combinations (APP+PER, APP+EG, MPP+PER, MPP+EG, PNP+PER and PNP+EG) are produced by mixing polypropylene with three kinds of phosphorus flame retardant (APP, MPP and PNP), two kinds of carbonization agent (PER and EG), and a coupling agent (PP-g-MA). In order to acquire these six optimal series of halogen-free flame-retarded combinations, we discuss tensile strength, flexural strength, flexural modulus, Izod impact strength, limiting oxygen index, and the validation of UL94 V0. In the result, fire retardancy is increased by adding these three kinds of phosphorus flame retardant (APP, MPP and PNP), but impact resistance is reduced on the contrary. Not only fire retardancy but also stiffness are increased by adding these two kinds of carbonization agent (PER and EG). Tensile strength is increased by adding the coupling agent (PP-g-MA). After analyzing the overall property of these six series, we found that the two ascendant series are PNP+PER and PNP+EG halogen-free flame-retarded combinations.