목분-PP 복합체의 난연성과 기계적 특성

손원근; 황택성

Journal of the Korean Industrial and Engineering Chemistry, Vol.10, No.1, 46-50, February, 1999

Export Citation

목분-PP 복합체의 난연성과 기계적 특성

The Flame Retardance and Mechanical Properties of Wood Powder-filled PP Composites

손원근, 황택성

초록

본 연구에서는 표면이 개질된 목분으로 강화된 PP수지 복합체의 (NH₄)₂HPO₄과 boron 혼합물(Na₂B₄O₇ : H₃BO₃ = 5 : 1 ratio)에 대한 난연특성에 관해 알아보았다. 또한 m-phenylene dimaleimide(PDMI)로 개질된 PP수지와 비개질된 PP수지 복합체의 기계적 특성을 비교하였다. (NH₄)₂HPO₄로 개질된 복합체의 난연성은 boron 혼합물로 개질된 복합체의 난연성보다 우수하였다. 복합체의 충격강도는 목분의 함량이 증가함에 따라 증가되었고, 인장강도는 감소하였다. 개질된 PP수지 복합체의 기계적 강도는 비개질된 수지의 복합체보다 개선되었다. 또한 난연제의 농도가 증가함에 따라 인장강도는 점진적으로 증가되었고, 25 wt%에서 최대값을 나타내었으며, PDMI의 함량이 증가함에 따라 목분-PP 복합체의 인장강도는 16 wt%까지 증가되었다.

Effects of (NH₄)₂HPO₄ and boron compounds (Na₂B₄O₇ : H₃BO₃ = 5 : 1 ratio) on the flame retarding characteristics of the surface modified wood powder-filled polypropylene composites were studied experimentally. The mechanical properties of ;m-phenylene dimaleimide(PDMI)-modified polypropylene composite were also compared with those of unmodified one. The flame retardance of (NH₄)₂HPO₄-modified wood powder composites was more improved than that of boron compounds-modified one. The impact strength of composites increased and the tensile strength of those decreased progressively with an increase of wood powder loading. The mechanical properties of modified polypropylene composites are more improved than those of unmodified one. The tensile strength also increased marginally with increasing the concentration of flame retardants, yielding a maximum when the concentration of flame retardant is 25.0 wt%. And the tensile strength of the composite was increased up to 16 wt% with increasing concentration of PDMI.

Keywords:Thermoplastics;Polypropylene;Wood Composite;Flame Retadance.

[References]

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[2] Triantfillou TC, Deskovic N, J. Struct. Eng., 118, 1270 (1992)

[3] Hilado CJ, "Flamability Handbook for Plastics," 4th ed., Technomic Publishing Co., Pensyvania (1990)

[4] Green J, Ch. 4 in "Thermoplastic Polymer Additives," ed. by J.T.Lutz, Jr., Marcel Dekker, N.Y. (1989)

[5] Hidori N, "ポリマ-の難然化,", 大成社, 東京 (1979)

[6] Lewin M, Altas SM, Pearce EM, "Flame-Retardant Polymer Materials," Plenum Press, N.Y. (1975)

[7] Kim SJ, Polym. Sci. Technol., 6(2), 118 (1995)

[8] Rogers JK, Mod. Plast., 67, 66 (1990)

[9] Wood AS, Mod. Plast., 68, 50 (1991)

[10] Raj RG, Kokta BV, Daneault C, Int. J. Polym. Mater., 15, 239 (1989)

[11] Maldas D, Kokta BV, J. Appl. Polym. Sci., 40, 917 (1990)

[12] Kishi H, Yoshioka M, Yamanoi A, Shiraish N, Mokuzai Gakkaishi, 34, 133 (1988)

[13] Myers GE, Chahyaid IS, Coberly CA, Ermer DS, Int. J. Polym. Mater., 15, 21 (1991)

[14] Green J, Plastics Compounding, 10, 3, 57 (1987)

[15] Sellman LG, Ostman BAL, Back EC, Fire Mater., 1, 85 (1970)

[16] Sain MM, Oravec J, Lacok J, Beniska J, Acta Polymerica, 40, 648 (1989)

[17] Coran AY, Patel RP, William D, Rubber Chem. Technol., 55, 116 (1982)

[18] Sain MM, Kokta BV, Maldas D, J. Adhes. Sci. Technol., 7(1), 49 (1993)