Journal of Applied Polymer Science最新文献_第7页

Multi-Model Lifetime Prediction of Silicone Rubber Under Coupled Environmental Stressors Based on Accelerated Testing in Simulated Marine Atmospheric Conditions 基于模拟海洋大气条件加速试验的耦合环境应力下硅橡胶多模型寿命预测

IF 3.1 3区化学

Journal of Applied Polymer Science Pub Date : 2026-10-01 Epub Date: 2026-08-23 DOI: 10.1002/app.71391

Rui-Yuan Wang, Mo-Nan Han, Qian Chen, Ning Li, Xue-Rong Liu, Wei-Fang Zhang

{"title":"Multi-Model Lifetime Prediction of Silicone Rubber Under Coupled Environmental Stressors Based on Accelerated Testing in Simulated Marine Atmospheric Conditions","authors":"Rui-Yuan Wang, Mo-Nan Han, Qian Chen, Ning Li, Xue-Rong Liu, Wei-Fang Zhang","doi":"10.1002/app.71391","DOIUrl":"https://doi.org/10.1002/app.71391","url":null,"abstract":"<div>\u0000 \u0000 <p>Marine equipment operating in atmospheric marine environments is subjected to multiple interacting stressors, making the durability of silicone-rubber sealing components and their lifetime prediction both critical and difficult to assess. This study investigates the degradation behavior of silicone rubber under representative marine conditions and establishes a multi-model framework for accelerated lifetime prediction. Compression set was used as the primary degradation indicator and failure criterion because it reflects long-term stress relaxation and the functional retention of sealing materials. Accelerated aging tests were carried out under ultraviolet (UV), hygrothermal, salt-spray, and two coupled conditions: UV–thermal–humidity and UV–hygrothermal–salt-spray. Corresponding statistical degradation models, a piecewise power-law model, a drifted Wiener process model, and a saturation-type model were developed based on the observed degradation patterns. The results indicate that different aging conditions produce distinct degradation modes: UV and salt-spray aging show marked fluctuations, whereas hygrothermal aging exhibits a more stable and continuous degradation trend. Coupled environments further modify the degradation pathway, revealing nonlinear interactions among stressors rather than a simple additive response. The proposed multi-model framework demonstrates good adaptability across different degradation mechanisms and provides a practical basis for the lifetime assessment of silicone-rubber components used in marine equipment.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"143 42","pages":""},"PeriodicalIF":3.1,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149100539","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Preparation and Performance of Dual-Resin-Based Composite Superhydrophobic Coatings 双树脂基复合超疏水涂料的制备及性能研究

IF 3.1 3区化学

Journal of Applied Polymer Science Pub Date : 2026-10-01 Epub Date: 2026-08-30 DOI: 10.1002/app.71393

Tao Li, Xinmeng Wu, Shunuo Bian, Jiaming Liu, Haiwei Han, Yong Wang, Lihua Yu, Junhua Xu, Chaofeng Liang

{"title":"The Preparation and Performance of Dual-Resin-Based Composite Superhydrophobic Coatings","authors":"Tao Li, Xinmeng Wu, Shunuo Bian, Jiaming Liu, Haiwei Han, Yong Wang, Lihua Yu, Junhua Xu, Chaofeng Liang","doi":"10.1002/app.71393","DOIUrl":"https://doi.org/10.1002/app.71393","url":null,"abstract":"<div>\u0000 \u0000 <p>A functionally complementary dual-resin strategy was developed to regulate wettability and mechanical durability in superhydrophobic coatings. High-impact polystyrene (HIPS) and organic silicone resin (OSR) formed the composite matrix, and coatings with different HIPS/OSR ratios were fabricated by one-step spraying at a constant fluorinated nano-SiO<sub>2</sub> loading. SEM/EDS, surface roughness, and XPS analyses indicated that increasing the OSR proportion reduced smooth HIPS-rich domains, promoted continuous OSR/fluorinated-silica-rich micro-nanostructures, and increased surface fluorine exposure, thereby increasing the water contact angle and decreasing the sliding angle. Mechanical tests revealed a composition-dependent trade-off: HIPS-rich coatings showed smaller contact-angle losses, whereas OSR-rich coatings better retained low sliding angles after damage. The 1:2 HIPS/OSR coating achieved the highest initial water repellency (158.85° contact angle; 5.55° sliding angle), remained stable after acidic and alkaline immersion, delayed complete freezing to 1260 s at −15°C, exhibited effective self-cleaning, and maintained approximately 96% oil–water separation efficiency over 5 cycles. These results establish a composition–structure–surface chemistry–performance relationship and identify resin composition as a practical design variable for balancing water repellency and mechanical durability.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"143 42","pages":""},"PeriodicalIF":3.1,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149100669","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Lightweight Electromagnetic Absorption Performance and Size Effect of Ni@PPy Composites Based on Hollow Glass Microspheres 中空玻璃微球Ni@PPy复合材料的轻量化电磁吸收性能及尺寸效应

IF 3.1 3区化学

Journal of Applied Polymer Science Pub Date : 2026-10-01 Epub Date: 2026-08-25 DOI: 10.1002/app.71408

Gaixuan Zhou, Nan Wu, Xiping Sun, Xiaoji Liu, Zhijia Zhang, Songsong Zhang, Teng Ma, Hao Wei, Qiang Wang, Lin Wang, Guojun Wang

{"title":"Lightweight Electromagnetic Absorption Performance and Size Effect of Ni@PPy Composites Based on Hollow Glass Microspheres","authors":"Gaixuan Zhou, Nan Wu, Xiping Sun, Xiaoji Liu, Zhijia Zhang, Songsong Zhang, Teng Ma, Hao Wei, Qiang Wang, Lin Wang, Guojun Wang","doi":"10.1002/app.71408","DOIUrl":"https://doi.org/10.1002/app.71408","url":null,"abstract":"<div>\u0000 \u0000 <p>Lightweight and broadband microwave absorbers are highly desirable for practical electromagnetic protection, yet achieving strong absorption at low density and reduced thickness remains challenging due to the trade-off between impedance matching and attenuation capability. Herein, a lightweight multilayer core–shell absorber (HNP) was constructed using hollow glass microspheres as the core, combined with a nickel-based intermediate shell and an outer polypyrrole layer to enhance conductive networks and interfacial polarization. By tuning the cavity size, systematic structure–property–performance relationships were established. With increasing cavity size, the permittivity is significantly enhanced, leading to improved dielectric and conductive losses. Notably, the absorber maintains an ultralow density of ~0.32 g·cm<sup>−3</sup>. As a representative system, HNP-110 exhibits loading-dependent absorption behavior. At 10 wt%, a minimum reflection loss (RL<sub>min</sub>) of −51.39 dB is achieved at 10.88 GHz with a thickness of 2.7 mm, along with an effective absorption bandwidth (EAB) of 5.28 GHz. At 15 wt%, the EAB further expands to 5.44 GHz while maintaining strong absorption. Excessive loading (20 wt%) leads to impedance mismatch and performance deterioration. Mechanistic analysis reveals a transition from polarization-dominated to conduction-dominated loss, with optimal impedance matching (|<i>Z</i><sub>in</sub>/<i>Z</i><sub>0</sub>| ≈ 1) achieved at 10–15 wt%, enabling efficient broadband absorption.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"143 42","pages":""},"PeriodicalIF":3.1,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149100356","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sustainable Biomass-Caffeic Acid Hybrid Adhesives via Dynamic Covalent and Metal–Ligand Coordination Networks 通过动态共价和金属配体配位网络的可持续生物质-咖啡酸杂化粘合剂

IF 3.1 3区化学

Journal of Applied Polymer Science Pub Date : 2026-10-01 Epub Date: 2026-08-25 DOI: 10.1002/app.71397

Liutao Hou, Haoyu Li, Jianwei Guo, Xupeng Liang, Yanyan Guo, Chun Chang

{"title":"Sustainable Biomass-Caffeic Acid Hybrid Adhesives via Dynamic Covalent and Metal–Ligand Coordination Networks","authors":"Liutao Hou, Haoyu Li, Jianwei Guo, Xupeng Liang, Yanyan Guo, Chun Chang","doi":"10.1002/app.71397","DOIUrl":"https://doi.org/10.1002/app.71397","url":null,"abstract":"<div>\u0000 \u0000 <p>Adhesives are crucial for bonding diverse substrates in electronics, aerospace, and precision manufacturing, but traditional ones suffer from insufficient durability, poor low-temperature performance, and limited environmental adaptability. This study develops a high-performance supramolecular adhesive (poly(Cu-BTC-CA)) via a stepwise polymerization strategy: Cu-BTC (MOF) is synthesized first, then functionalized with caffeic acid (CA) to form a dual cross-linked porous network. FT-IR confirms coordination/polymerization interactions. Poly(Cu-BTC-CA) shows robust adhesion to diverse substrates, including stainless steel, copper, aluminum, and glass. More remarkably, this MOF-based adhesive exhibits a distinctive low-temperature reinforcement effect, with its adhesion strength on stainless steel increasing to 6.2 MPa at −80°C—a counterintuitive enhancement rather than the usual decline. It also retains effective bonding after exposure to liquid nitrogen (−196°C), with partial recovery upon warming to room temperature. In addition, the adhesive demonstrates outstanding macroscopic load-bearing performance: a mere 62.5 mg of material over a 625 mm<sup>2</sup> overlap area can stably support a 30 kg load without interfacial debonding. This work provides a novel design for adhesives with excellent strength, wide temperature adaptability, and great potential for extreme-environment applications.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"143 42","pages":""},"PeriodicalIF":3.1,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149100413","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mixing and Compounding of Graphene/High Density Polyethylene Nanocomposites Using Twin-Screw and Octa-Screw Extrusions: A Comparative Study 双螺杆和八螺杆挤压复合石墨烯/高密度聚乙烯纳米复合材料的对比研究

IF 3.1 3区化学

Journal of Applied Polymer Science Pub Date : 2026-10-01 Epub Date: 2026-08-22 DOI: 10.1002/app.71399

Cheng-Ying Liu, Akira Ishigami, Hiroshi Ito

{"title":"Mixing and Compounding of Graphene/High Density Polyethylene Nanocomposites Using Twin-Screw and Octa-Screw Extrusions: A Comparative Study","authors":"Cheng-Ying Liu, Akira Ishigami, Hiroshi Ito","doi":"10.1002/app.71399","DOIUrl":"https://doi.org/10.1002/app.71399","url":null,"abstract":"<p>Multi-screw extrusions are crucial for compounding polymeric nanocomposites. However, achieving homogeneous nanomaterial dispersion in high-viscosity matrices without severe thermal degradation remains a significant challenge. This study presents a comparative investigation evaluating the compounding efficacy of conventional twin-screw extruders (TSE) against a uniquely designed octa-screw extruder (OSE) for graphene-filled high-density polyethylene (HDPE) nanocomposites. The structural, thermal, flow, and mechanical properties of 5.0 wt% graphene/HDPE nanocomposites were systematically assessed. Morphological results indicate that the OSE's unique multi-stage intermeshing geometry yields a significantly more uniform graphene dispersion and effectively reduces agglomeration compared to the TSE. Benefiting from a narrower residence time distribution and lower processing temperature profile, the OSE minimized thermal degradation while allowing highly exfoliated graphene to act as nanoscale solid lubricants. Consequently, OSE-compounded nanocomposites exhibited superior macroscopic properties over TSE counterparts, including enhanced crystallinity (63.3% vs. 62.1%), improved ultimate tensile strength (28.5 MPa vs. 27.5 MPa), higher decomposition temperature (461°C vs. 457°C), and better melt flowability. These findings demonstrate that octa-screw extrusion provides a scalable processing advantage for developing advanced, high-performance polymer nanocomposites.</p>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"143 42","pages":""},"PeriodicalIF":3.1,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/app.71399","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149100143","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mixing and Compounding of Graphene/High Density Polyethylene Nanocomposites Using Twin-Screw and Octa-Screw Extrusions: A Comparative Study 双螺杆和八螺杆挤压复合石墨烯/高密度聚乙烯纳米复合材料的对比研究

IF 3.1 3区化学

Journal of Applied Polymer Science Pub Date : 2026-10-01 Epub Date: 2026-08-22 DOI: 10.1002/app.71399

Cheng-Ying Liu, Akira Ishigami, Hiroshi Ito

{"title":"Mixing and Compounding of Graphene/High Density Polyethylene Nanocomposites Using Twin-Screw and Octa-Screw Extrusions: A Comparative Study","authors":"Cheng-Ying Liu, Akira Ishigami, Hiroshi Ito","doi":"10.1002/app.71399","DOIUrl":"https://doi.org/10.1002/app.71399","url":null,"abstract":"<p>Multi-screw extrusions are crucial for compounding polymeric nanocomposites. However, achieving homogeneous nanomaterial dispersion in high-viscosity matrices without severe thermal degradation remains a significant challenge. This study presents a comparative investigation evaluating the compounding efficacy of conventional twin-screw extruders (TSE) against a uniquely designed octa-screw extruder (OSE) for graphene-filled high-density polyethylene (HDPE) nanocomposites. The structural, thermal, flow, and mechanical properties of 5.0 wt% graphene/HDPE nanocomposites were systematically assessed. Morphological results indicate that the OSE's unique multi-stage intermeshing geometry yields a significantly more uniform graphene dispersion and effectively reduces agglomeration compared to the TSE. Benefiting from a narrower residence time distribution and lower processing temperature profile, the OSE minimized thermal degradation while allowing highly exfoliated graphene to act as nanoscale solid lubricants. Consequently, OSE-compounded nanocomposites exhibited superior macroscopic properties over TSE counterparts, including enhanced crystallinity (63.3% vs. 62.1%), improved ultimate tensile strength (28.5 MPa vs. 27.5 MPa), higher decomposition temperature (461°C vs. 457°C), and better melt flowability. These findings demonstrate that octa-screw extrusion provides a scalable processing advantage for developing advanced, high-performance polymer nanocomposites.</p>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"143 42","pages":""},"PeriodicalIF":3.1,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/app.71399","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149100142","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Facile Preparation of AZO-Functionalized Cotton Fabrics With High Infrared Reflectance via a Conventional Pad–Dry–Cure Process 传统垫-干固化工艺制备高红外反射率偶氮功能化棉织物

IF 3.1 3区化学

Journal of Applied Polymer Science Pub Date : 2026-10-01 Epub Date: 2026-08-25 DOI: 10.1002/app.71407

Yaqian Sun, Kaiyan Wang, Yuyuan Wang, Jie Min, Chengbing Yu

{"title":"Facile Preparation of AZO-Functionalized Cotton Fabrics With High Infrared Reflectance via a Conventional Pad–Dry–Cure Process","authors":"Yaqian Sun, Kaiyan Wang, Yuyuan Wang, Jie Min, Chengbing Yu","doi":"10.1002/app.71407","DOIUrl":"https://doi.org/10.1002/app.71407","url":null,"abstract":"<div>\u0000 \u0000 <p>Passive personal thermal management textiles with effective infrared (IR) shielding are highly sought after for outdoor cooling purposes. Herein, we report an application-driven paradigm utilizing aluminum-doped zinc oxide (AZO) nanoparticles on cotton knitted fabric via a conventional pad–dry–cure process. The AZO dispersions were optimized with anionic dispersant BYK-190, while polyurethane dispersion (PUD) 1087R3 was chosen as the ideal binder. Optimal conditions were identified as an AZO particle size of 100–500 nm, an AZO concentration of 7.5 wt%, and a PUD 1087R3:AZO mass ratio of 1:1. The resulting AZO-finished cotton fabric demonstrated a high IR reflectance of about 80%, achieved primarily through free-carrier plasma reflection of AZO nanoparticles. As a result, the fabric's surface temperature decreased by 11.4°C under an IR lamp and, importantly, by 4.4°C under direct summer sunlight compared to unfinished cotton knitted fabric. Additionally, the fabric retained excellent wearability. This study offers a straightforward, scalable, and effective approach for developing high-efficiency cooling textiles, with significant potential for applications in summer outdoor wearables and personal thermal management systems.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"143 42","pages":""},"PeriodicalIF":3.1,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149100402","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of Material Extrusion Printing Parameters on the Foaming Behavior and Properties of Foaming Agent Modified Polypropylene: A Taguchi Based Investigation 材料挤出打印参数对发泡剂改性聚丙烯发泡性能影响的田口研究

IF 3.1 3区化学

Journal of Applied Polymer Science Pub Date : 2026-10-01 Epub Date: 2026-08-26 DOI: 10.1002/app.71403

Yinshi Lu, Handai Liu, Ke gong, Clem Higginbotham, Zhi Cao

{"title":"Effects of Material Extrusion Printing Parameters on the Foaming Behavior and Properties of Foaming Agent Modified Polypropylene: A Taguchi Based Investigation","authors":"Yinshi Lu, Handai Liu, Ke gong, Clem Higginbotham, Zhi Cao","doi":"10.1002/app.71403","DOIUrl":"https://doi.org/10.1002/app.71403","url":null,"abstract":"<div>\u0000 \u0000 <p>Foam 3D printing offers a promising route for producing lightweight structures, although the cell morphology and mechanical performance of printed polypropylene remain highly sensitive to processing conditions. This study investigates the effects of printing temperature, printing speed, and nozzle diameter on the foaming behavior and property retention of polypropylene containing a chemical foaming agent using a Taguchi L9 design. Printing temperatures of 220°C–240°C, speeds of 40– 80 mm/s, and nozzle diameters of 0.4–0.8 mm were evaluated through density, hardness, tensile, and flexural testing, scanning electron microscopy, and differential scanning calorimetry. Printing temperature had the greatest influence on density, contributing 34% of the observed variation, and affected hardness and cell morphology. Nozzle diameter was the dominant factor affecting mechanical performance and contributed 59.1% to flexural strength variation. The 0.8 mm nozzle was associated with a more stable cellular structure at high temperatures, while printing speed showed a smaller overall contribution. The preferred conditions identified from the main effect analysis provide practical guidance for selecting printing parameters within the ranges investigated. These findings provide a quantitative basis for balancing lightweight design and mechanical performance.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"143 42","pages":""},"PeriodicalIF":3.1,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149100476","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Preparation of Flame-Retardant Reinforced Recycled PBT Building Materials Suitable for Hygrothermal Environments: Flame Retardancy and Hygrothermal Resistance Improvement via Aluminum Phosphite/Paragonite Synergy 适用于湿热环境的阻燃增强再生PBT建筑材料的制备：通过亚磷酸铝/Paragonite协同作用提高阻燃性和耐热性

IF 3.1 3区化学

Journal of Applied Polymer Science Pub Date : 2026-10-01 Epub Date: 2026-08-20 DOI: 10.1002/app.71392

Xiang Li, Guirong Xie, Xiaoxue Zhu, Xiaozhong Liu

{"title":"Preparation of Flame-Retardant Reinforced Recycled PBT Building Materials Suitable for Hygrothermal Environments: Flame Retardancy and Hygrothermal Resistance Improvement via Aluminum Phosphite/Paragonite Synergy","authors":"Xiang Li, Guirong Xie, Xiaoxue Zhu, Xiaozhong Liu","doi":"10.1002/app.71392","DOIUrl":"https://doi.org/10.1002/app.71392","url":null,"abstract":"<div>\u0000 \u0000 <p>Glass fiber-reinforced flame-retardant PBT (FR-GF/PBT) is widely used in various insulating, structural, and flame-retardant components for building electrical applications. Many of these components are used in hygrothermal environments. To reduce the performance degradation of FR-GF/PBT under hygrothermal conditions, a series of GF-PBT composites were prepared by melt extrusion using recycled poly(butylene terephthalate) (R-PBT) as the matrix, glass fiber (GF) as the reinforcement, aluminum phosphite (Al-P) as the flame retardant, and Paragonite (Pgt) as the functional additive. The effects of Pgt and Al-P on the flame retardancy, thermal properties, and mechanical properties of the GF-PBT composites were investigated. The results showed that Al-P could effectively improve the flame retardancy of GF-PBT but caused significant reductions in the strength, toughness, and thermal stability of the composite. Al-P and Pgt exhibited a synergistic flame-retardant effect in GF-PBT, and Pgt improved the mechanical and thermal properties of the composites. Pgt could effectively reduce the degradation of flame retardancy and mechanical properties of GF-PBT/Al-P/Pgt composites under hygrothermal environments. This work provides a novel strategy for preparing flame-retardant reinforced PBT building materials with excellent comprehensive properties for applications in hygrothermal environments.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"143 42","pages":""},"PeriodicalIF":3.1,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149100610","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of Flat Energy Director Thickness and Welding Time on Interface Formation for Ultrasonic Welding of GF/PPS Composites 平板能导厚度和焊接时间对GF/PPS复合材料超声焊接界面形成的影响

IF 3.1 3区化学

Journal of Applied Polymer Science Pub Date : 2026-10-01 Epub Date: 2026-08-20 DOI: 10.1002/app.71396

Zhuobin Sun, Xinge Zhang, Wenquan Wang, Hongen Wang, Yang Yang, Xueshan Zhao, Gang Deng, Zhihui Zhang

{"title":"Effects of Flat Energy Director Thickness and Welding Time on Interface Formation for Ultrasonic Welding of GF/PPS Composites","authors":"Zhuobin Sun, Xinge Zhang, Wenquan Wang, Hongen Wang, Yang Yang, Xueshan Zhao, Gang Deng, Zhihui Zhang","doi":"10.1002/app.71396","DOIUrl":"https://doi.org/10.1002/app.71396","url":null,"abstract":"<div>\u0000 \u0000 <p>In this paper, the resin films were selected as energy directors, and the influence of flat energy director thickness and welding time on the ultrasonic welding joints of GF-PPS composites was investigated. The ultrasonic welding termination condition was set to time-control mode in order to analyze the influence of energy director thickness on the interface formation. The viscoelastic heat generation and interfacial temperature distribution of energy directors with different thicknesses during the welding process were analyzed using COMSOL software and a thermocouple. The interface and defect formation mechanisms were analyzed by examining the macro and microstructural characterization of the joint cross-section. The lap shear strength of joints under different welding parameters was evaluated through single lap shear tests, while the fracture mechanisms were analyzed using a scanning electron microscope. Furthermore, these findings can be extended to other types of composites, which provide valuable insights for improving the ultrasonic welding process of thermoplastic composites.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"143 42","pages":""},"PeriodicalIF":3.1,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149100613","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0