Structure insight into the interfacial effect of fiber-low density polyethylene composites by the combination of experiment and finite element simulation

Bai, Longshan; Cao, Changlin; Xiao, Liren; Cheng, Huibin; Liu, Zhen; Sun, Xiaoli; Xiao, Qiao; Yang, Songwei; Lin, Guoliang; Qian, Qingrong; Chen, Qinghua

doi:10.1016/j.polymertesting.2022.107597

Cited by 4 publications

(1 citation statement)

References 32 publications

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“…The high-strength fibers based on this material have excellent mechanical properties, chemical medium resistance, impact resistance, moisture and corrosion resistance, and can be combined with different matrixes to make various types of composites [1][2][3][4]. UHMWPE fiberreinforced composites are widely used in military protection, aerospace, sports medicine, and other fields, due to their various excellent characteristics [5][6][7][8][9]. Among them, ballistic protection is the most important application of UHMWPE fiber-reinforced composites, and their light weight, high strength, and impact resistance properties promote ballistic protection equipment to gradually develop in the direction of high efficiency, light weight, and integration [10,11].…”

Section: Introductionmentioning

confidence: 99%

Temperature and Strain Rate Related Deformation Behavior of UHMWPE Fiber-Reinforced Composites

Yi,

Xu,

Tian

et al. 2024

Polymers

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As they possess the qualities of high specific strength, high specific modulus, high specific energy absorption, and excellent designability, ultra-high molecular weight polyethylene (UHMWPE) fiber-reinforced composites have gradually replaced traditional materials such as ceramics and steel plates as the main ballistic protection materials. Using an improved test method, the uniaxial tensile tests of UHMWPE fiber-reinforced composites at two strain rates of 10−4 s−1 and 10−2 s−1 and a temperature range from −20 °C to 80 °C are carried out to study the effects of strain rate and temperature on the tensile behavior of UHMWPE fiber-reinforced composites. The experimental results indicate that the tensile responses exhibit nonlinear characteristics and the sensitivity of strain rate and temperature. The yield strength and modulus decrease with increasing temperature and increase with the increase in strain rate. A phenomenological viscoelastic constitutive model composed of a nonlinear spring and a nonlinear Maxwell element is proposed to characterize the temperature and strain rate dependent deformation behavior of UHMWPE fiber-reinforced composites before yielding. The results show that the model can accurately predict the tensile nonlinear viscoelastic responses of UHMWPE fiber-reinforced composites before yielding over a wide temperature range under quasi-static loading.

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Section: Introductionmentioning

confidence: 99%

Temperature and Strain Rate Related Deformation Behavior of UHMWPE Fiber-Reinforced Composites

Yi,

Xu,

Tian

et al. 2024

Polymers

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The influence of in situ microfibrillation on the mechanical properties and warpage of low‐density polyethylene/polystyrene composite prepared by fused filament fabrication

Wang,

Yang,

et al. 2024

J of Applied Polymer Sci

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Fused filament fabrication (FFF) has been widely adopted due to its simplicity and cost‐effectiveness. But until now, its application materials are still limited. Polyolefin material is one of the most commonly used plastics. However, low‐density polyethylene (LDPE) is rarely used in FFF due to the inadequate strength of the filaments and the warpage of the printed parts. In this work, polystyrene (PS) is added to LDPE to obtain blend filaments. After that, the filaments are used to validate the possibility of in situ microfibrillation directly in the process. The results show that the addition of PS can significantly improve the bending strength, bending modulus, and hardness without affecting the heat resistance and crystal transition of the composite. Besides, the PS dispersed phase can form microfibers under the influence of the shear field. The formation of microfibers can significantly enhance the mechanical properties of composites. The tensile strength and Young's modulus increase by 140% and 221%, respectively. The warping deformation and surface morphology of printed parts are also improved. This study provides a new idea for utilizing low‐strength polyolefin in 3D printing and achieving performance enhancement.

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Transcrystallization in self‐reinforced polylactic acid composites and its effect on interfacial and tensile properties

Tao,

Niu,

Chen

et al. 2024

Polymer Composites

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The transcrystalline layer (TCL) constitutes a cylindrical crystal structure enveloping a reinforcing fiber, which plays a pivotal role in influencing the interfacial stress transfer within composite materials. However, its potential impact on interfacial shear strength (IFSS) and tensile properties of self‐reinforced polylactic acid composites (SRPLA) have been largely overlooked. In this study, the growth of TCL with isothermal crystallization time was observed. The development of TCL had an optimum effect on interfacial bonding (IFSS increased by 57.3%) after 10 min of isothermal crystallization due to improved “anchoring” effect caused by the interaction between the amorphous region in both TCL and the matrix. Prolonged isothermal crystallization time reversed this effect due to less chain entanglements as a result of spherulites growth and transcrystalline structure perfection. In terms of tensile properties, the development of the TCL exhibited a detrimental effect on tensile strength and strain at break, ascribed to a transition of tensile failure mode from a fiber‐dominated failure mode to a matrix‐dominated failure mode, yet yielded a positive influence on Young's modulus. This study offers crucial insights and guidance for comprehending the impact of TCL on SRPLA properties, thereby facilitating the potential for optimization of SRPLA properties.Highlights In‐situ observation of the TCL growth in SRPLA. Insight into impact of TCL development on IFSS and tensile properties. Essential guidance for SRPLA performance optimization.

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Structure insight into the interfacial effect of fiber-low density polyethylene composites by the combination of experiment and finite element simulation

Cited by 4 publications

References 32 publications

Temperature and Strain Rate Related Deformation Behavior of UHMWPE Fiber-Reinforced Composites

Temperature and Strain Rate Related Deformation Behavior of UHMWPE Fiber-Reinforced Composites

The influence of in situ microfibrillation on the mechanical properties and warpage of low‐density polyethylene/polystyrene composite prepared by fused filament fabrication

Transcrystallization in self‐reinforced polylactic acid composites and its effect on interfacial and tensile properties

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