Polymer Testing最新文献

{"title":"Optimal formulation design of silicate-modified polymer based grouting material for reinforcing silty fine sand stratum","authors":"Jiasen Liang ,&nbsp;Xueming Du ,&nbsp;Hongyuan Fang ,&nbsp;Xiaohua Zhao ,&nbsp;Bin Li ,&nbsp;Kejie Zhai ,&nbsp;Mingming Sun ,&nbsp;Shanyong Wang","doi":"10.1016/j.polymertesting.2025.108840","DOIUrl":"10.1016/j.polymertesting.2025.108840","url":null,"abstract":"<div><div>To address the material requirements for grouting reinforcement in fine sand strata, a novel silicate-modified polymer two-component grouting material was designed. In this material, the traditional organic polyol component of the two-component polymer was replaced with an inorganic silicate (water glass) component, along with the addition of tertiary amine catalysts, organotin catalysts, water. The response surface methodology (RSM) was used to statistically predict the performance of the modified polymer grouting material. The effects of four parameters (two-component mass ratio, tertiary amine catalyst content, organotin catalyst content, and water content) and their interactions on response variables (gelation time, polymer solids strength, cemented body strength) were investigated. Based on a comprehensive consideration of various performance requirements for grouting materials in loose fine sand strata, multi-objective optimization was employed to determine the optimal formulation of the modified polymer grouting material (A/B ratio of 0.85, tertiary amine catalyst at 2.48 %, organotin catalyst at 0.63 %, and water at 1.87 %). A series of experimental tests were conducted to evaluate the material properties of the optimal formulation, and its mechanical performance and microstructural characteristics were compared with those of traditional polymer grouting materials to verify the proposed formation mechanism of the modified polymer. The results demonstrated that the proposed design method effectively determines the optimal grouting material formulation. The optimized modified polymer grouting material exhibited excellent comprehensive performance. Finally, the optimized modified polymer grouting material was applied in a pavement repair project on a section of a highway. After grouting, the structural layer's uniform integrity was significantly restored, the damaged areas were effectively repaired, the modified polymer slurry showed good diffusion, and the repair effect was satisfactory, meeting the engineering requirements for grouting in loose fine sand strata.</div></div>","PeriodicalId":20628,"journal":{"name":"Polymer Testing","volume":"149 ","pages":"Article 108840"},"PeriodicalIF":5.0,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143935208","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Testing and analysis of footwear insole copolymers by FTIR-ATR, non-sampling Raman probe spectroscopy, and thermal gravimetric analysis","authors":"Sayo O. Fakayode ,&nbsp;Peter Rosado Flores ,&nbsp;Brinkley Bolton ,&nbsp;Bailey Dassow ,&nbsp;Kate Moore ,&nbsp;Kayley Owens","doi":"10.1016/j.polymertesting.2025.108847","DOIUrl":"10.1016/j.polymertesting.2025.108847","url":null,"abstract":"<div><div>The footwear industry generates hundreds of billions of dollars in revenue each year. However, e-commerce, online retailers' markets, and social media platforms have promoted footwear cross-border counterfeiting along the footwear supply chain with economic implications for shoe producers and marketers, lowering the company's sales and profit margins. This study reports the first combined use of FTIR-ATR, non-sampling Raman probe spectroscopy and Thermal Gravimetric Analysis (TGA) for copolymer analyses of different classes of footwear. Specifically, one hundred and ninety-nine (199) shoe samples of various brand names—including high-end shoes, low-end shoes, heels, boots, men's dress shoes, flats, and sneakers—were collected via donation or purchasing from local stores and subjected to FTIR and Raman spectra measurement. The FTIR-ATR and Raman spectra of poly (ethylene vinyl acetate) ATEVA copolymers reference standards were collected and utilized to construct calibration curves. ATEVA copolymers reference standards and the insole footwear were further subjected to TGA to evaluate the polymers' thermal decomposition and stability pattern. The figure-of-merit (R² ≥ 0.9542) demonstrates the linearity of the calibration curve. The overall results (15 ± 5.2 %, 23 ± 9.0 %, 21 ± 9.0 %, 25 ± 11 %, 19 ± 8.2 %, and 23 ± 10 %) of % copolymer was determined in the heels, sandals, boots, men's dress shoes, flats, and sneakers respectively. The FTIR and Raman spectra and the determined % copolymers content may provide insight into footwear insole thermal degradation, stability, and insole durability. The thermogram decomposition energy of footwear polymers vary, but footwear insole polymers degrade around 600 °C, and weight loss continues gradually with an increase in temperature. This study finds practical applications by U.S. Customs and Border Protection officers, forensic scientists, law enforcement, and quality control officers for forensic footwear, fabric, and automobile polymer analysis for quality checks for consumer goods standard compliance.</div></div>","PeriodicalId":20628,"journal":{"name":"Polymer Testing","volume":"149 ","pages":"Article 108847"},"PeriodicalIF":5.0,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143935207","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Gamma-irradiation induced nonconventional fluorescence enhancement in silicone foams","authors":"Zhendong Huang ,&nbsp;Qiang Liu ,&nbsp;Binlian Jiang,&nbsp;Ruiyang Dou,&nbsp;Bowen Dai,&nbsp;Wei Huang,&nbsp;Hongbing Chen","doi":"10.1016/j.polymertesting.2025.108846","DOIUrl":"10.1016/j.polymertesting.2025.108846","url":null,"abstract":"<div><div>An unexpected fluorescence enhancement phenomenon in silicone foams induced by gamma-irradiation is reported. These materials contain no traditional luminophores. The fluorescence intensity increases with the absorbed dose (within 1000 Gy). Time-dependent density functional theory (TDDFT) calculations suggest that the mechanism is a crosslinking-enabled emission process, which is enhanced by gamma-irradiation. The fluorescence changes are visible and can even applied to distinguish irradiated silicone foam samples with absorbed doses less than 25 Gy, achieving sensitive visualization of gamma-irradiation damage. The potential applications for radiation damage self-reporting and information encryption are demonstrated. The fluorescence intensity shows similar trends with radiolysis gas products (typical aging parameter) in early-stage irradiation, which can represent radiation-induced crosslinking and radiolysis respectively to reveal the changes of materials after low dose irradiation from two aspects. This work could broaden the application of nonconventional fluorescent materials and help understand the effects of low-dose radiation on silicone materials.</div></div>","PeriodicalId":20628,"journal":{"name":"Polymer Testing","volume":"148 ","pages":"Article 108846"},"PeriodicalIF":5.0,"publicationDate":"2025-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143922009","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Development of an integrated testing and calibration approach for fused filament fabrication of polylactic acid","authors":"Hao He,&nbsp;Zhi Zhu,&nbsp;Yixia Zhang,&nbsp;Zhongpu Zhang,&nbsp;Tosin Famakinwa,&nbsp;Richard (Chunhui) Yang","doi":"10.1016/j.polymertesting.2025.108834","DOIUrl":"10.1016/j.polymertesting.2025.108834","url":null,"abstract":"<div><div>The Fused Filament Fabrication (FFF) technique faces challenges in mitigating defects generated in the printing process for the quality assurance of final products. To address this, accurate defect detection and identification methods are essential to use. In addition to finding ways to improve the quality and performance of FFFprinted parts, a test artefact offers a solution for identifying potential defects effectively, but it was not developed and implemented systematically yet. This study develops an integrated testing and calibration approach for mitigating defects in the FFFprinted polymer products with a new unified test artefact. This new test artefact incorporates all-in-one calibration functions, including defect identification, measurement, evaluation, and compensation. Specifically, a fitting kit is developed as part of the unified test artefact for tolerance measurement purposes with minimal effort to provide prompt feedback. Artificial Neural Network (ANN) is employed to accelerate the evaluation process for batch processing data. The devised approach and the test artefact are validated through its practical implementations into FFF of polylactic acid (PLA) and compared to other existing test artefacts in literature. Finally, a detailed defect mitigation process is highlighted via printing a PLA bevel gear set and a universal joint and significant improvements are achieved with successfully mitigating key defects.</div></div>","PeriodicalId":20628,"journal":{"name":"Polymer Testing","volume":"148 ","pages":"Article 108834"},"PeriodicalIF":5.0,"publicationDate":"2025-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143937677","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Construction of silane-modified polyampholyte hydrogel coatings for multi-scale antibiofouling","authors":"Guohao Li ,&nbsp;Lingli Shang ,&nbsp;Dapeng Li ,&nbsp;Yiwan Huang ,&nbsp;Shijun Long ,&nbsp;Xuefeng Li","doi":"10.1016/j.polymertesting.2025.108844","DOIUrl":"10.1016/j.polymertesting.2025.108844","url":null,"abstract":"<div><div>The antifouling capabilities of zwitterionic hydrogels have been well established, yet, drawbacks such as single antifouling performance and osmotic pressure-driven swelling in water, which lead to poor mechanical properties and low bonding strength, respectively, remain obstacles to practical applications. In this work, silane-modified polyampholyte (S-PA)-based hydrogel coatings with high adhesive strength and multi-scale antifouling ability were prepared by introducing silane onto the hydrogel surfaces. The resulting S-PA hydrogel coatings exhibited as high as 1980 J m⁻² adhesion, due to the covalent bonding between the vinyl groups in PA and silanols in silane molecules. Furthermore, the S-PA hydrogel coatings demonstrated good protein adsorption resistance (the protein adsorption capacity of bovine serum protein was 5 mg g⁻¹) and bacteriostatic ability, which endows the coating's multi-scale antifouling effect together with its excellent anti-diatom adhesion property (the adhesion area of navicular on S-PA hydrogel was as low as 7.43 mm²). The high adhesive strength and multi-scale antifouling ability of the S-PA hydrogel coatings presented in this work may provide a new route toward marine antifouling strategies.</div></div>","PeriodicalId":20628,"journal":{"name":"Polymer Testing","volume":"148 ","pages":"Article 108844"},"PeriodicalIF":5.0,"publicationDate":"2025-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143927709","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Measurement and simulation of broadband radar absorption properties of polypyrrole nanotubes and their carbonaceous analogues","authors":"Tomáš Zálabský ,&nbsp;Drahomír Čadek ,&nbsp;Fatima Hassouna ,&nbsp;Jiří Tuček ,&nbsp;Tomáš Lapka ,&nbsp;Dušan Kopecký","doi":"10.1016/j.polymertesting.2025.108843","DOIUrl":"10.1016/j.polymertesting.2025.108843","url":null,"abstract":"<div><div>The rapid development of unmanned aerial and ground vehicles (UAVs and UGVs, respectively) requires innovative means for their protection against detection and localization by radar microwave signals. Radar absorbing materials (RAMs) used in functional or structural composites of small, low-speed UAVs and UGVs can employ non-conventional fillers, such as nanostructured conductive polymers or their carbonaceous analogues. However, the work with non-conventional fillers brings difficulties in preparation and manipulation with sufficient amounts on a laboratory scale in a reasonable time and at a reasonable price. Therefore, computer simulation of filler behavior using software tools can be a vital solution to assess their ability to serve as RAMs. Here, polypyrrole nanotubes (PPy-NT) and carbonized polypyrrole nanotubes (PPy-C) were dispersed in polydimethylsiloxane matrix (PDMS) at low concentrations (1–3 % w/w) and their attenuation properties (reflection, absorption, and transmission coefficients), dielectric properties (complex permittivity and loss tangents) and apparent alternating current (AC) conductivity were evaluated between 2.6 GHz and 18 GHz. A 2 mm thin sample of the PPy-NT/PDMS composite at low concentration of 3 % w/w of the filler absorbs 28 % of the radar signal at 3.3 GHz. Using the simulation model made in CST Studio software, the evaluation of radar absorption properties was extended beyond the physical boundaries of the PPy-NT/PDMS sample, and the attenuation properties were evaluated up to a theoretical thickness of 100 mm (absorption of the signal 63 %). The presented method of simulation and the proposed model allows fast and flexible determination of attenuation properties of non-conventional RAMs of various thicknesses.</div></div>","PeriodicalId":20628,"journal":{"name":"Polymer Testing","volume":"148 ","pages":"Article 108843"},"PeriodicalIF":5.0,"publicationDate":"2025-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143922007","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Wear, mechanical and chemical properties of castor oil toothbrush bristles","authors":"Dalia Kaisarly ,&nbsp;Lilli Heusinger ,&nbsp;Gisela Dachs ,&nbsp;Moataz El Gezawi ,&nbsp;Anja Liebermann ,&nbsp;Kurt Erdelt ,&nbsp;Ludwig Czibere ,&nbsp;Falk Schwendicke ,&nbsp;Katrin Heck ,&nbsp;Miriam Draenert","doi":"10.1016/j.polymertesting.2025.108839","DOIUrl":"10.1016/j.polymertesting.2025.108839","url":null,"abstract":"<div><div>Manual toothbrushes with polyamide bristles are used for daily oral hygiene. Toothbrush bristles made from alternative raw materials like castor oil are increasingly produced but scarcely investigated. Medium hardness toothbrushes with bristles made of castor oil (AlterraBambus (ALT), Alverde (ALV), Dr. BestGreenClean (DRB), HydrophilBambus (HYD), ProkudentRecycling (PRO)) and one control toothbrush (ADAcontrol (ADA)) (n = 8) were investigated for wear, dentin-surface-roughness, elastic modulus and chemical composition. Toothbrushes were subjected to 12.5k, 25k, 37.5k and 50k cycles (toothbrush-simulator) simulating 6 months of toothbrushing. Macroscopic and microscopic (50 × magnification, SEM/micro-CT) images of bristle-ends, surface and overall quality were evaluated before and after mentioned intervals according to DIN_EN_ISO_20126. Data were statistically analyzed (Friedman-Test; ANOVA). No obvious wear was visible in macroscopic images. SEM-images showed acceptable bristle-ends in ADA (100 %) and DRB (100 %), PRO (96 %), ALV (87 %), ALT (82 %) and HYD (73 %), while bristle-surfaces were unacceptable only in HYD at 0 and 12.5k cycles. Overall evaluation was acceptable in ADA and DRB (100 %), PRO (96 %) ALV (84 %), ALT (82 %) and HYD (51 %) with significant difference in ALV and HYD at different intervals. Dentin-surface-roughness ranged from 3.4 to 3.8 μm (HYD-ALT), dentin-abrasion ranged from 60 to 95 μm (ALV-ALT) and elastic modulus ranged from 1.14 to 1.81 GPa (PRO-ALT) at baseline and from 0.61 to 1.11 GPa (PRO-ADA) after 50 k cycles. Bristles had similar elemental compositions: carbon (54.6–62.7 %), nitrogen (19.4–24.3 %) and oxygen (16.0–21.1 %), in agreement with ADA. Bristles of toothbrushes except HYD had acceptable bristle ends and surfaces. Dentin-surface-roughness, mechanical and chemical properties of castor oil bristles were similar to those of conventional polyamide bristles.</div></div>","PeriodicalId":20628,"journal":{"name":"Polymer Testing","volume":"148 ","pages":"Article 108839"},"PeriodicalIF":5.0,"publicationDate":"2025-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143931339","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhancing energy harvesting capabilities using lead-free, flexible piezoelectric poly (vinylidene fluoride) tapes","authors":"Amanda Melo ,&nbsp;David Esteves ,&nbsp;Ignacio Ezpeleta ,&nbsp;Cintia Mateo-Mateo ,&nbsp;Nelson Durães","doi":"10.1016/j.polymertesting.2025.108838","DOIUrl":"10.1016/j.polymertesting.2025.108838","url":null,"abstract":"<div><div>Poly(vinylidene fluoride) (PVDF) has been widely investigated as an energy harvesting material not only for its piezoelectric properties but also for being flexible, lead-free piezoelectric properties, and processing versatility. To enhance its piezoelectric performance, in this study, an additive was blended with PVDF to facilitate the crystalline transformation from α-phase to β-phase. This study explores the influence of two manufacturing processes, extrusion (EX) and compression moulding (CM), and the influence of different stretching and polarisation conditions on the piezoelectric performance of PVDF tapes for their integration into a cantilever beam for energy harvesting applications. The heat stretching process for EX and CM tapes was conducted at distinct temperatures (80° and 120 °C) and stretching speeds (300 and 10 mm/min), leading to different stretch ratios (3.0 and 4.50) that effectively raised the β-phase. Structural changes in the crystalline phases were identified using X-ray diffraction and Fourier transform infrared spectroscopy. Following this, the dipoles were oriented in the direction of an applied electric field (400–500 kV/cm). The piezoelectric performance was characterized by d₃₃ values, and peak-to-peak voltage, under sinusoidal tensile stress, was obtained using a universal tensile testing machine. A d₃₃ value of 25–30 pC/N and a peak-to-peak voltage of 27–35 V were obtained. Additionally, the piezoelectric behaviour was observed by arranging the tapes in a cantilever made of fibreglass composite and subjecting it to vibrational excitation at the resonance frequency. Maximum values of output voltage of 12 V for each tape were obtained under cantilever fixture.</div></div>","PeriodicalId":20628,"journal":{"name":"Polymer Testing","volume":"149 ","pages":"Article 108838"},"PeriodicalIF":5.0,"publicationDate":"2025-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143946536","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Innovative polypropylene-based adsorbent functionalized by oxygen plasma and L-Arginine for efficient removal of emerging contaminants from aqueous media","authors":"Mojtaba Azizi ,&nbsp;Mahdi Akhgari ,&nbsp;Maryam Esmkhani ,&nbsp;Hossein Ghafuri ,&nbsp;Shahrzad Javanshir","doi":"10.1016/j.polymertesting.2025.108842","DOIUrl":"10.1016/j.polymertesting.2025.108842","url":null,"abstract":"<div><div>The existence of organic pollutants such as dyes and antibiotics in water poses serious health risks. The use of oxygen plasma to functionalize and apply oxygen containing functional groups onto surfaces can convert them to precious and useful adsorbents. In this work, functionalization of the inner layer of the disposable masks was performed via oxygen plasma treatment and the prepared catalyst applied for the removal of methylene blue and metronidazole from aqueous systems. Oxygen plasma treated masks (PTM) were identified via the contact angle measurement and the best sample was further functionalized with aminopropyl trimethoxysilane linked to L-Arginine. The synthesized PTM-APTMS-L-arginine composite was fully analyzed by various characterization techniques including XRD, BET, TGA, and FeSEM. The FTIR and EDS analysis showed that L-arginine is well distributed in a Polypropylene matrix. Moreover, the adsorption model was in good agreement with the Langmuir model with an adsorption capacity of 254 mg/g and 1006 mg/g for MNZ and MB respectively. Kinetics data were described well by pseudo-second-order for both pollutants. The results introduced the synthesized composite as a promising candidate for the water treatment process.</div></div>","PeriodicalId":20628,"journal":{"name":"Polymer Testing","volume":"148 ","pages":"Article 108842"},"PeriodicalIF":5.0,"publicationDate":"2025-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143922006","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Experimental and simulation study on micro damage of HTPB propellant under multi angle tensile shear loading","authors":"Wang Jiaxiang,&nbsp;Qiang Hongfu,&nbsp;Pei Shudi,&nbsp;Li Shiqi","doi":"10.1016/j.polymertesting.2025.108841","DOIUrl":"10.1016/j.polymertesting.2025.108841","url":null,"abstract":"<div><div>The damage evolution of composite solid propellants is influenced by the stress state. In order to investigate the in-situ damage evolution mechanism of hydroxyl terminated polybutadiene (HTPB) propellant under tensile shear conditions, computer tomography (CT) technology was used to scan and reconstruct micro samples of HTPB propellant loaded at different angles. The variation of propellant internal damage with loading process and the influence of different representative volume element (RVE) sizes on porosity were analyzed. Subsequently, numerical simulations of relaxation loads were conducted using 12 different finite element models with 4 RVE sizes and 3 mesh sizes. The experimental results show that under tension shear loading conditions, the porosity increases exponentially with the equivalent effect, and the propagation direction of macroscopic cracks formed by the convergence of microcracks tends to be perpendicular to the tensile stress component. When the side length of RVE reaches and exceeds 600 μm, the porosity tends to stabilize. The numerical simulation study of variable angle tension shear loading found that when the RVE size is 800 μm and the grid size is 10 μm, the calculation effect considering calculation accuracy and efficiency is the best. As the loading angle increases, the dewetting stress first decreases and then increases, the dewetting strain shows a linear increasing trend.</div></div>","PeriodicalId":20628,"journal":{"name":"Polymer Testing","volume":"148 ","pages":"Article 108841"},"PeriodicalIF":5.0,"publicationDate":"2025-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143922008","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}