Effect of Urethane Modification on the Anti-Bullet Property of Dyneema/vinylester Composites
2
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
Polyurethane oligomers (PUOs) such as UA8297, UP127 and EB8200 were utilized to enhance the anti-bullet property of Dyneema^®/vinylester composites. First, prepregs of PUO and vinylester (XSR10) were prepared via spray coating on Dyneema^® fabric at 21 % resin content (by volume). In addition, spray coating and film lamination were also carried out with a mixture of XSR10/PUO for selected PUOs. Next, the prepregs were dried at RT for 1-2 h and then at 100 °C for 30 min to remove the solvent and to provide partial cure when necessary. The prepregs were stacked in 24 layers and cured at 120 °C for 5 min under the contact pressure and for additional 25 min at 150 kg/cm^2. Finally, the anti-bullet properties of composite samples were evaluated by measuring V_50 with simulated fragment projectile (SFP, 17 gr). The results showed a 6.5 and 9.0 % increase of V_50 with UP127 and EB8200, respectively.
Abstract
Polyurethane oligomers (PUOs) such as UA8297, UP127 and EB8200 were utilized to enhance the anti-bullet property of Dyneema^®/vinylester composites. First, prepregs of PUO and vinylester (XSR10) were prepared via spray coating on Dyneema^® fabric at 21 % resin content (by volume). In addition, spray coating and film lamination were also carried out with a mixture of XSR10/PUO for selected PUOs. Next, the prepregs were dried at RT for 1-2 h and then at 100 °C for 30 min to remove the solvent and to provide partial cure when necessary. The prepregs were stacked in 24 layers and cured at 120 °C for 5 min under the contact pressure and for additional 25 min at 150 kg/cm^2. Finally, the anti-bullet properties of composite samples were evaluated by measuring V_50 with simulated fragment projectile (SFP, 17 gr). The results showed a 6.5 and 9.0 % increase of V_50 with UP127 and EB8200, respectively.
참고문헌 (22)
- 김희재, "방탄공학" (2004), 청문각
- García, J.M., "High-performance aromatic polyamides", Progress in Polymer Science, 35(5), pp.623~686 (2010)
- Chodák, I., "High modulus polyethylene fibres: preparation, properties and modification by crosslinking", Progress in Polymer Science, 23(8), pp.1409~1442 (1998)
- Dong, Z., "Testing and modeling of yarn pull-out in plain woven Kevlar fabrics", Composites Part A: Applied Science and Manufacturing, 40(12), pp.1863~1869 (2009)
- Samara, A.Z., "Polyethylene", polyethylene composite materials of ballistic protection, 1997, pp.33(4), 72~75
- Briscoe, B.J., "The ballistic impact characteristics of aramid fabrics: The influence of interface friction", Wear, 158(1), pp.229~247 (1992)
- 최신 섬유기술동향, "한국섬유산업연합회", 한국섬유산업연합회, ~ (2007)
- Rao, M.P., "Modeling the effects of yarn material properties and friction on the ballistic impact of a plain-weave fabric", Composite Structures, 89(4), pp.556~566 (2009)
- 다공성, "고강도 특수기능 경량소 재개발", 하헌승, 2005
- "MIL-DTL-44050B; Cloth, Ballistic, Aramid", ~
- Karahan, H., "An investigation into ballistic performance and energy absorption capabilities of woven aramid fabrics", International Journal of Impact Engineering, 35(6), pp.499~510 (2008)
- 이승구, "케블라", PVB 변성 페놀 복합재료 경화거동, 1992, pp.5(1), 476~485
- Ahmad, M.R., "Effect of fabric stitching on ballistic impact resistance of natural rubber coated fabric systems", Materials & Design, 29(7), pp.1353~1358 (2008)
- Gryshchuk, O., "Toughening of vinylester–urethane hybrid resins by functional liquid nitrile rubbers and hyperbranched polymers", Polymer, 43(17), pp.4763~4768 (2002)
- Lin, S.P., "Volume shrinkages and mechanical properties of various fiber-reinforced hydroxyethyl methacrylate-polyurethane", unsaturated polyester composites, 2008, pp.68(3), 709~717
- Lin, S.P., "Composites of UHMWPE fiber reinforced PU", epoxy grafted interpenetrating polymer networks, 2007, pp.43(3), 996~1008
- Cheeseman, B.A., "Ballistic impact into fabric and compliant composite laminates", Composite Structures, 61(1), pp.161~173 (2003)
- Iremonger, M.J., "Ballistic impact of fibre composite armours by fragment-simulating projectiles", Composites Part A: Applied Science and Manufacturing, 27(7), pp.575~581 (1996)
- Petrovic, Z.S., "Polyurethane elastomers", Progress in Polymer Science, 16(5), pp.695~836 (1991)