Use of patterned thermoplastic hot film to create flexible ballistic composite laminates from UHMWPE fabric

Mudzi, Panashe; Wu, Rong; Firouzi, Dariush; Ching, C.Y.; Farncombe, Troy; Selvaganapathy, P. Ravi

doi:10.1016/j.matdes.2022.110403

Cited by 13 publications

(2 citation statements)

References 33 publications

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“…On the other hand, the film lamination method is a method that is widely used due to a simple manufacturing process. Since it is manufactured with a relatively simple process, it has excellent productivity and has the advantage that the physical properties of the manufactured product are uniform [22][23][24][25][26]. Santos has conducted research on several types of self-reinforced composite materials manufactured using a single polymer such as polypropylene, polyester, and polyamide [27].…”

Section: Introductionmentioning

confidence: 99%

Analysis of Mechanical Properties and Structural Analysis According to the Multi-Layered Structure of Polyethylene-Based Self-Reinforced Composites

Yu,

Lee,

Kim

et al. 2023

Polymers

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In this research, a self-reinforced composite material was manufactured using a single polyethylene material, and this self-reinforced composite material has excellent recyclability and is environmentally friendly compared to composite materials composed of other types of material, such as glass fiber reinforced composites (GFRP) and carbon fiber reinforced composites (CFRP). In this research, the manufactured self-reinforced composite material consists of an outer layer and an inner layer. To manufacture the outer layer, low density polyethylene (LDPE) films were laminated on high density polyethylene (HDPE) fabrics and knitted fabrics, and composite materials were prepared at various temperatures using hot stamping. A 3D printing process was utilized to manufacture the inner layer. After designing a structure with a cross-sectional shape of a triangle, circle, or hexagon, the inner layer structure was manufactured by 3D printing high-density polyethylene material. As an adhesive film for bonding the outer layer and the inner layer, a polyethylene-based self-reinforced composite material was prepared using a low-density polyethylene material. Input data for simulation of self-reinforced composite materials were obtained through tensile property analysis using a universal testing machine (UTM, Shimadzu, Kyoto, Japan), and the physical property values derived as output data and actual experimental values were obtained. As a result of the comparison, the error rate between simulation data and experimental data was 5.4% when the shape of the inner layer of self-reinforced composite material was a hexagon, 3.6% when it was a circle, and 7.8% when a triangular shape showed the highest value. Simulation in a virtual space can reduce the time and cost required for actual research and can be important data for producing high-quality products.

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Section: Introductionmentioning

confidence: 99%

Analysis of Mechanical Properties and Structural Analysis According to the Multi-Layered Structure of Polyethylene-Based Self-Reinforced Composites

Yu,

Lee,

Kim

et al. 2023

Polymers

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“…The commonly used fabrics for ballistic protection are woven from high-performance fibers such as aramid fibers and ultra-high molecular weight polyethylene (UHMWPE) fibers. 1,2 Attributed to their low density, high failure strength, and high failure strain, aramid fabrics and UHMWPE fabrics have shown superior energy absorption capability under ballistic impact. 3,4 Furthermore, the ever-increasing demand for advanced personal protection systems has motivated a considerable interest in the ballistic performance of woven fabrics.…”

mentioning

confidence: 99%

Effect of hybrid strategies on the ballistic response of aramid/ultra-high molecular weight polyethylene woven fabrics

Zhang,

Song,

Zheng

et al. 2024

Textile Research Journal

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The increasing demand for advanced personal protection systems has motivated a considerable interest in hybrid woven fabrics and textile composites. However, the effectiveness of the combination method of fibers on ballistic performance remains uncertain, leaving the selection of an appropriate hybridization strategy unresolved. This study conducted a thorough comparison of the ballistic responses of hybrid aramid/ultra-high molecular weight polyethylene (UHMWPE) woven fabrics, aiming to provide a comprehensive understanding of the hybridization effects. Specimens with inter-layer, intra-layer, and intra-yarn hybrid configurations were manufactured, and ballistic impact tests were performed via a light-gas gun. The residual velocity, energy absorption, dynamic penetration process, and perforation modes of the hybrid specimens were recorded at two selected impact velocities and then compared with those of non-hybrid specimens. The results demonstrated that the enhancement effect of hybridization varied with hybrid configuration and impact velocity. The interlacing of aramid yarns and UHMWPE yarns in intra-layer hybrid specimens did not promote the breakage of UHMWPE fibers, which was responsible for the inferior ballistic performance. In contrast, inter-layer hybridization and intra-yarn hybridization could overcome the insufficient friction of UHMWPE and the low mechanical properties of aramid, resulting in superior ballistic performance.

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Improving ballistic limits of UHMWPE laminates by gamma‐ray irradiation induced enhancement of interfacial bonding

Qi,

Zhao,

Wang

2024

Polymer Composites

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Though ultra‐high molecular weight polyethylene (UHMWPE) fibers are promising candidates for the design of body armor against ballistic impact, weak interfacial bonding induced by surface inertness of UHMWPE fibers would inevitably result in the fluctuation of impact resistance. Herein, we deploy a scalable 60Co gamma‐ray irradiation strategy to modify the UHMWPE fibers, which not only improves the roughness of the fiber surface, but also creates new chemical bonding between fibers and polyurethane (PU) resin. Surprisingly, the tensile strength of UHMWPE fiber is maintained very well with the introduction of small pores on surface by gamma‐rays, which exhibits greater advantages than other surface modification methods. It should be attributed to the transformation of crystal structures from orthorhombic phase to more stable hexagonal phase in UHMWPE fibers. Because of the improved adhesion between fibers and PU resin, tensile strength of the UHMWPE/PU prepregs is increased by 18.5% after 10 kGy irradiation. Finally, the V50 ballistic performances of UHMWPE/PU laminates are evaluated. Most of the laminates are penetrated at the initial velocity of ~690 m/s except for the UHMWPE/PU laminates irradiated at 10 kGy. In addition, the delamination and back deformation of the irradiated ones are also alleviated significantly, which show great capabilities in not only preventing ballistic impact, but also reducing the injury degree of the wearer.Highlights A scalable 60Co gamma‐ray irradiation strategy is used to deal with weak interfacial properties of UHMWPE fibers. The roughness of the fiber surface is increased. New chemical bonding between fibers and polyurethane (PU) resin is formed. The tensile strength of UHMWPE fiber is maintained very well. Interfacial properties and ballistic impact limits of laminates are improved.

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Use of patterned thermoplastic hot film to create flexible ballistic composite laminates from UHMWPE fabric

Cited by 13 publications

References 33 publications

Analysis of Mechanical Properties and Structural Analysis According to the Multi-Layered Structure of Polyethylene-Based Self-Reinforced Composites

Analysis of Mechanical Properties and Structural Analysis According to the Multi-Layered Structure of Polyethylene-Based Self-Reinforced Composites

Effect of hybrid strategies on the ballistic response of aramid/ultra-high molecular weight polyethylene woven fabrics

Improving ballistic limits of UHMWPE laminates by gamma‐ray irradiation induced enhancement of interfacial bonding

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