Multi-Scale Model for the Aging Performance of Particle-Filled Polymer Composites

Fang, Chihua; Wang, Huizhen; Zhang, Yujiao; Zhang, Minghua; Shen, Tao; Du, Jianke

doi:10.3390/polym15153158

Cited by 3 publications

(3 citation statements)

References 28 publications

(38 reference statements)

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“…To assess the impact of aging on the specime we conducted high-temperature-accelerated aging tests. The PFPC specimens were sea in aluminum foil pouches and then placed in a curing constant temperature test chamb model LC-101-0B (Shanghai Lichen Instrument Technology Co., LTD, Shanghai, China) conduct the accelerated aging experiments under the conditions listed in Table 1 [26]. After the specified aging time, the PFPC specimens were removed and left in a desiccator for natural cooling for one day to allow stress relief.…”

Section: Methodsmentioning

confidence: 99%

Prediction of Aging Performance of Particle-Filled Polymer Composites Based on RVE Model

Wang,

Fang,

Zhang

et al. 2023

Polymers

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In this study, the aging performance of particle-filled polymer composites (PFPCs) under thermo-oxidative conditions was investigated on multiple scales. High-temperature-accelerated tests were conducted to analyze the effects of aging time and temperature. A representative volume element (RVE) model was established for the PFPCs using a random particle-filling algorithm. A predictive model for the crosslink density was conducted based on the closed-loop chain reaction of polymer oxidation. According to the theory of polymer physics, the relation between the crosslink density and matrix modulus was determined. The particle/matrix interface in the RVE model was represented by the cohesive zone model (CZM). The parameters of the CZM were determined by the inversion techniques. Then, a comprehensive multiscale RVE model was constructed, which was applied to predict the modulus and dewetting strain of the aged PFPCs. The predicted results show good agreement with the test results, which verifies the reliability of our model.

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Section: Methodsmentioning

confidence: 99%

Prediction of Aging Performance of Particle-Filled Polymer Composites Based on RVE Model

Wang,

Fang,

Zhang

et al. 2023

Polymers

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“…[38] The excellent stretchability performance and breathability features of TPEE show great potentials in wearable devices and pressure sensors applications. [39] In this work, we fabricate spiropyran-based multi-responsive sensors through the straightforward layer-by-layer processes utilizing upcycled TPEE as substrates. The TPEE grains are first upcycled from recycled-PET (r-PET), collected from the disposed parts of biaxially oriented polyethylene terephthalate (BOPET) films.…”

Section: Introductionmentioning

confidence: 99%

“…[ 38 ] The excellent stretchability performance and breathability features of TPEE show great potentials in wearable devices and pressure sensors applications. [ 39 ]…”

Section: Introductionmentioning

confidence: 99%

Reversible Sensing Technologies Using Upcycled TPEE: Crafting pH and Light Responsive Materials towards Sustainable Monitoring

Chang,

Kuo,

et al. 2024

Small

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Multiresponsive materials with reversible and durable characteristics are indispensable because of their promising applications in environmental change detections. To fabricate multiresponsive materials in mass production, however, complex reactions and impractical situations are often involved. Herein, a dual responsive (light and pH) spiropyran‐based smart sensor fabricated by a simple layer‐by‐layer (LbL) assembly process from upcycled thermoplastic polyester elastomer (TPEE) materials derived from recycled polyethylene terephthalate (r‐PET) is proposed. Positively charged chitosan solutions and negatively charged merocyanine‐COOH (MC‐COOH) solutions are employed in the LbL assembly technique, forming the chitosan‐spiropyran deposited TPEE (TPEE‐CH‐SP) film. Upon UV irradiation, the spiropyran‐COOH (SP‐COOH) molecules on the TPEE‐CH‐SP film undergo the ring‐opening isomerization, along with an apparent color change from colorless to purple, to transform into the MC‐COOH molecules. By further exposing the TPEE‐CH‐MC film to hydrogen chloride (HCl) and nitric acid (HNO3) vapors, the MC‐COOH molecules can be transformed into protonated merocyanine‐COOH (MCH‐COOH) with the simultaneous color change from purple to yellow.

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Storage Life of Particle-Filled Polymer Composites Considering Aging Effects

Zhang,

Fang,

Wang

et al. 2024

Polymers

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This study investigates the storage life of particle-filled polymer composites (PFPCs) under the influence of aging effects. High-temperature accelerated aging tests were conducted at 60 °C, 70 °C, and 80 °C for various days to analyze the impact of aging time and temperature on the mechanical behavior of the materials. A predictive model for crosslink density was established using the Arrhenius equation, and the relationship between crosslink density and relaxation modulus was determined based on polymer physics theory. On this basis, a viscoelastic constitutive model that incorporates aging effects was developed. Structural analyses of a PFPC column with a length of 2.3 m and outer diameter of 1.8 m were performed using the UMAT subroutine in ABAQUS. Subsequently, a safety margin assessment method based on dewetting strain was employed to predict the storage life of the PFPC column. The results indicate that the aging viscoelastic constitutive model effectively characterizes the hardening effects caused by aging in the composites during storage. The storage life for the PFPC column considering aging effects decreases from 22 years to 19 years compared to models that ignore such effects. This approach provides a reference for estimating the storage life of PFPC columns considering aging effects.

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Multi-Scale Model for the Aging Performance of Particle-Filled Polymer Composites

Cited by 3 publications

References 28 publications

Prediction of Aging Performance of Particle-Filled Polymer Composites Based on RVE Model

Prediction of Aging Performance of Particle-Filled Polymer Composites Based on RVE Model

Reversible Sensing Technologies Using Upcycled TPEE: Crafting pH and Light Responsive Materials towards Sustainable Monitoring

Storage Life of Particle-Filled Polymer Composites Considering Aging Effects

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