Advanced Industrial and Engineering Polymer Research最新文献_第3页

Triethylenetetramine-modified ammonium polyphosphate as charring agent for enhanced flame retardancy in ethylene vinyl acetate copolymer 三乙基四胺改性聚磷酸铵增炭剂对乙烯-醋酸乙烯共聚物阻燃性能的增强

IF 9.9 Q1 MATERIALS SCIENCE, COMPOSITES

Advanced Industrial and Engineering Polymer Research

Pub Date : 2025-07-01 DOI: 10.1016/j.aiepr.2025.05.004

Yi-Song Wang , Wen Ye , Yan Jiang , De-Yi Wang

In this study, a novel charring agent (TETA-APP) was prepared via ion exchange reaction between triethylenetetramine (TETA) and ammonium polyphosphate (APP). It was characterized by fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy analysis (SEM), X-ray photoelectron analysis (XPS), and X-ray diffraction analysis (XRD), etc. Furthermore, the obtained TETA-APP was blended with APP to act as flame retardant in ethylene vinyl acetate copolymer (EVA), and the comprehensive properties of the composites were tested. Compared with IFR@EVA-1 (30 wt% APP in EVA), IFR@EVA-3 with 15 wt% TETA-APP and 15 wt% APP in EVA resin resulting in 32.1 % of limiting oxygen index (LOI) and V-0 grade of vertical burning test (UL-94), and showed a significant decrease in both the values of pHRR (reduced by 54.5 %) and SPR (reduced by 46.0 %) in cone calorimetric (CC) analysis. These results demonstrated that TETA-APP performed obviously synergistic effect in APP/EVA system. Then thermogravimetric-infrared spectroscopy (TG-FTIR) and Raman spectroscopy were used to further investigate the flame-retardant mechanism. In gaseous phase, the degraded CO₂, NH₃ and H₂O acted as diluents reducing oxygen density, and the formed PO· performed quenching effect to capture free radicals. In condensed phase, a large number of -P-N-C-, -P-C- bonds produced by the decomposition of TETA-APP were helpful for forming a more stable char layer, which restricted the exchange of heat and flammable pyrolysates. Both the effects in gaseous and condensed phases were the principal reason for the much better flame retardancy in EVA resin.

本研究以三乙烯四胺（TETA）与聚磷酸铵（APP）为原料，通过离子交换反应制备了一种新型炭化剂TETA-APP。采用傅里叶变换红外光谱（FT-IR）、扫描电镜（SEM）、x射线光电子分析（XPS）、x射线衍射分析（XRD）等方法对其进行了表征。将得到的TETA-APP与APP共混，作为醋酸乙烯共聚物（EVA）的阻燃剂，并对复合材料的综合性能进行了测试。与IFR@EVA-1 （30 wt%的APP在EVA中）相比，IFR@EVA-3 （15 wt%的TETA-APP和15 wt%的APP在EVA树脂中）的极限氧指数（LOI）和V-0等级（UL-94）降低了32.1%，并且在锥量热（CC）分析中，pHRR值（降低54.5%）和SPR值（降低46.0%）均显著降低。结果表明，TETA-APP在APP/EVA体系中具有明显的协同效应。然后利用热重红外光谱（TG-FTIR）和拉曼光谱进一步研究了阻燃机理。在气相中，降解的CO2、NH3和H2O作为稀释剂降低氧密度，形成的PO·起到淬灭作用捕获自由基。在凝聚相中，TETA-APP分解产生大量的- p - n - c -、- p - c -键，有利于形成更稳定的炭层，限制了热交换和可燃热解物。气相和凝聚相的作用是EVA树脂具有较好阻燃性的主要原因。

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引用次数: 0

Constructing a biomass flame retardant for fire-safe, thermal management, and compressive strength application of polybutylene adipate terephthalate/ polylactic acid foams 构建用于防火、热管理和抗压强度应用的聚己二甲酸丁二酯/聚乳酸泡沫生物质阻燃剂

IF 9.9 Q1 MATERIALS SCIENCE, COMPOSITES

Advanced Industrial and Engineering Polymer Research

Pub Date : 2025-04-01 DOI: 10.1016/j.aiepr.2024.12.003

Xiansheng Hong , Yunlong Li , Yuying Zheng , Qian Li

Poly (butylene adipate-co-terephthalate) (PBAT) and polylactic acid (PLA) as a biodegradable thermoplastic material have been expected to replace traditional undegradable plastics. However, PBAT resins are highly flammable and have poor thermal stability and lower compressive strength performance. For enhancing PBAT compressive strength, thermal stability, and flame retardancy performance, polylactic acid (PLA) resin was used to mix with the PBAT matrix. Meanwhile, a biomass additive (PA@CS) was prepared through phytic acid (PA) solution as the grinding medium modifying cellulose (CS) particles by the ball milling process. As the PBAT/10PLA/PA@CS foam presented, PA@CS implanted into pore walls which supported the structure integrity of foams and presented the lowest surface temperature when heating at 170 °C for 180 s. The compressive strength of PBAT/10PLA/PA@CS foam with 5 wt% of PA@CS addition reached 1.05 MPa at 20 % strain. During the combustion process, PA@CS, as flame retardants, demonstrated excellent suppressing heat dispassion and fire-resistance performance. For instance, 5 wt% of PA@CS presented the highest ultimate oxygen index (LOI) (27.9 %), and UL-94 V-0 rating. In detail, 5 wt% of PA@CS also reduced the peak of heat release rate (PHRR) from 851.47 kW m⁻² to 524.45 kW m⁻² by 38 %, total heat release (THR) from 84.34 MJ m⁻² to 66.45 MJ m⁻² by 21 %. In this work, PA@CS as an efficient biomass flame retardant provided technical support for the development of high-performance compressive strength, thermal insulation, and flame retardancy PBAT/PLA foams.

聚己二酸丁二酯（PBAT）和聚乳酸（PLA）作为一种生物可降解的热塑性材料有望取代传统的不可降解塑料。然而，PBAT树脂高度易燃，热稳定性差，抗压强度较低。为了提高PBAT的抗压强度、热稳定性和阻燃性能，采用聚乳酸（PLA）树脂与PBAT基体混合。同时，以植酸（PA）溶液为研磨介质，采用球磨法对纤维素（CS）颗粒进行改性，制备了生物质添加剂（PA@CS）。当PBAT/10PLA/PA@CS泡沫出现时，PA@CS植入孔壁，支撑泡沫结构的完整性，在170℃加热180 s时，表面温度最低。当PA@CS添加量为5 wt%时，PBAT/10PLA/PA@CS泡沫在20%应变下的抗压强度达到1.05 MPa。在燃烧过程中，PA@CS作为阻燃剂表现出优异的抑热性能和耐火性能。例如，5 wt% PA@CS的最终氧指数（LOI）最高（27.9%），UL-94 V-0等级最高。5 wt%的PA@CS还使放热率峰值（PHRR）从851.47 kW m−2降低到524.45 kW m−2，降低38%，总放热率（THR）从84.34 MJ m−2降低到66.45 MJ m−2，降低21%。PA@CS作为一种高效的生物质阻燃剂，为开发高性能抗压、保温、阻燃的PBAT/PLA泡沫材料提供了技术支持。

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引用次数: 0

Graphene nanoplatelet induced microphase separation in poly(ether-block-amide)s 石墨烯纳米血小板诱导聚醚-嵌段酰胺微相分离

IF 9.9 Q1 MATERIALS SCIENCE, COMPOSITES

Advanced Industrial and Engineering Polymer Research

Pub Date : 2025-04-01 DOI: 10.1016/j.aiepr.2024.10.002

David Reinoso Arenas , Eimear Magee , Stephen Hodge , Les Bell , Tony McNally

The inclusion of graphene nanoplatelets (GNP) in segmented block copolymers offers a route to manipulate microphase separation for tailoring the mechanical properties of thermoplastic elastomers. GNP loading, lateral size, surface chemistry, interactions with the copolymer hard (HS) and soft (SS) segments and the relative ratio of HS:SS determine the mechanical properties achievable. To test this hypothesis, two different GNPs with similar surface chemistry but which differed in lateral dimensions by one order of magnitude (GNP1, ∼2 μm and GNP2, ∼20 μm) were melt mixed with three different poly(ether-block-amide)s (PE-b-A)s with variable HS and SS content from high to low. The inclusion of the larger lateral sized GNP2 had a more pronounced effect on PE-b-A morphology as it was more effective at hindering SS chain mobility resulting in microphase separation and suppression of the glass transition temperature (T_g) of the PE-b-A with the largest SS content. At low loadings GNP2 preferentially locates to the HS region, inducing reorganisation of this phase resulting in increased microphase separation. Strain induced crystallisation (SIC) phenomena were also observed for the lowest HS content PE-b-A, behaviour not evident for the PE-b-A with the largest HS content as the SS are not long enough to allow SIC. Inclusion of GNP2 to the PE-b-A with the largest HS content resulted in the largest increase in Young's modulus (E) of 46 %, tensile strength (σ) of 37 % and elongation at break (ε) of 53 % relative to the unfilled polymer.

在分段嵌段共聚物中加入石墨烯纳米片（GNP），为控制微相分离提供了一条途径，从而调整热塑性弹性体的机械性能。GNP载荷、横向尺寸、表面化学、与共聚物硬段（HS）和软段（SS）的相互作用以及HS:SS的相对比例决定了可实现的机械性能。为了验证这一假设，将两种表面化学性质相似但横向尺寸相差一个数量级的不同GNPs （GNP1， ~ 2 μm和GNP2， ~ 20 μm）与三种不同的聚醚-嵌段酰胺（PE-b-A）s （HS和SS含量由高到低）熔体混合。横向尺寸较大的GNP2对PE-b-A形貌的影响更为明显，因为它更有效地阻碍SS链的迁移，导致SS含量最大的PE-b-A的微相分离和玻璃化转变温度（Tg）的抑制。在低负荷下，GNP2优先定位于HS区，诱导该相的重组，导致微相分离增加。在HS含量最低的PE-b-A中也观察到应变诱导结晶（SIC）现象，而HS含量最高的PE-b-A中由于SS的长度不足以允许SIC的存在，这种现象不明显。在HS含量最高的PE-b-A中加入GNP2，相对于未填充的聚合物，杨氏模量(E)增加46%，抗拉强度（σ）增加37%，断裂伸长率（ε）增加53%。

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引用次数: 0

Physicochemically modified polymer-based fluidic gates with tunable wetting properties for intelligent liquid manipulations 具有可调润湿特性的物理化学修饰聚合物基流控门，用于智能液体操作

IF 9.9 Q1 MATERIALS SCIENCE, COMPOSITES

Advanced Industrial and Engineering Polymer Research

Pub Date : 2025-04-01 DOI: 10.1016/j.aiepr.2024.11.001

Sehwan Song , Youlim Lee , Woochul Lee , Sang-Hee Yoon

The creation of a selective flow path and the regulation of a flow rate are of critical importance for polymer-based devices that manipulate liquid at the microscale. The formation of a 3D interconnected network of voids (i.e., physical volumetric modification) and the addition of a nonionic surfactant, Silwet L-77, (i.e., chemical volumetric modification) are expected to affect the wetting properties of polymers, thereby achieving selective gating effect in the polymer-based devices as an appropriate technology. Here, a set of polydimethylsiloxane (PDMS)-based fluidic gates (F-gates) were developed to enable selectivity for liquids and flow-rate control of the liquids by tuning the wetting properties of PDMS with the physicochemical volumetric modifications. For water and oil with different surface tensions (STs), the effects of the physical and chemical volumetric modifications on the fluidic gating of PDMS were quantitatively characterized in terms of contact angle, mass flow rate, and liquid absorption speed. The applicability of PDMS-based F-gates to the selective separation of oil and water even from oil-in-water emulsion was demonstrated by fabricating Janus PDMS-based F-gates. Our physicochemical volumetric modifications were also extensively analyzed to examine whether they satisfy the technological, economic, and ecological requirements of appropriate technology. This is the first effort to tailor the wetting properties of PDMS through physicochemical volumetric modifications, thus configuring a set of PDMS-based F-gates that act both as a separator for liquids of different STs and as a switch for fluid flows.

选择性流动路径的创建和流速的调节对于在微观尺度上操纵液体的聚合物基装置至关重要。形成三维互连的空洞网络（即物理体积改性）和添加非离子表面活性剂Silwet L-77（即化学体积改性）有望影响聚合物的润湿性能，从而在聚合物基器件中实现选择性门控效应，作为一种合适的技术。本文开发了一套基于聚二甲基硅氧烷（PDMS）的流体门（F-gates），通过物理化学体积修饰来调节PDMS的润湿特性，从而实现液体的选择性和液体的流速控制。对于具有不同表面张力（STs）的水和油，从接触角、质量流量和液体吸收速度等方面定量表征了物理和化学体积改性对PDMS流体门控的影响。通过制作Janus pms -based F-gates，证明了pms -based F-gates在油包水乳液中选择性分离油水的适用性。我们还广泛分析了物理化学体积修改，以检查它们是否满足适当技术的技术、经济和生态要求。这是第一次通过物理化学体积修改来调整PDMS的润湿特性，从而配置一组基于PDMS的f门，既可以作为不同STs液体的分离器，也可以作为流体流动的开关。

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引用次数: 0

4D printing of high-performance shape memory polymer with double covalent adaptive networks 具有双共价自适应网络的高性能形状记忆聚合物的4D打印

IF 9.9 Q1 MATERIALS SCIENCE, COMPOSITES

Advanced Industrial and Engineering Polymer Research

Pub Date : 2025-04-01 DOI: 10.1016/j.aiepr.2024.11.002

Zhangzhang Tang , Gao Deng , Yiyuan Sun , Liming Tao , Chao Wang , Zenghui Yang , Peng Liu , Qihua Wang , Yaoming Zhang , Tingmei Wang

Achieving 4D printing of shape memory polymers with both high strength and high transition temperature remains challenging due to the inherent incompatibility between the rigid molecular structure required for high strength and the molecular structure that moves on demand necessary for the shape memory effect, the limitations of high-performance polymer reaction kinetics, as well as internal stress during the printing process. Here, a direct ink writing (DIW) printed high-precision cyanate ester-urethane (CU) shape memory polymer with excellent performance was accomplished by incorporating two dynamic covalent bonds (carbamate and cyanuric acid) through copolymerizing cyanate ester with polyurethane acrylates. During curing, carbamate and cyanuric acid enable stress relaxation and polymer network rearrangement, facilitating the permanent reconfiguration of CU to form a novel triazine network structure. As a result, a high mechanical properties CU with excellent strength (83 MPa) and superior Young's modulus (2.37 GPa) were obtained, besides, the transition temperature (near 250 °C) is the highest in comparison to currently reported 4D-printed shape memory polymers. Furthermore, this reconfigurability was demonstrated by imprinting various surface patterns at microscopic level. Moreover, the reconfigurability of CU provides a novel strategy for smart molds in deformation and easy demolding. Overall, this study opens up a new avenue for the development of high-performance 4D printed shape memory polymers.

实现具有高强度和高转变温度的形状记忆聚合物的4D打印仍然具有挑战性，因为高强度所需的刚性分子结构与形状记忆效应所需的按需移动的分子结构之间存在固有的不兼容性，高性能聚合物反应动力学的局限性以及打印过程中的内应力。通过氰酸酯与聚氨酯丙烯酸酯的共聚，形成两个动态共价键（氨基甲酸酯和氰尿酸），实现了一种性能优异的直接油墨书写（DIW）印刷高精度氰酸酯-聚氨酯（CU）形状记忆聚合物。在固化过程中，氨基甲酸酯和氰尿酸使CU的应力松弛和聚合物网络重排，促进CU的永久重配置，形成新的三嗪网络结构。结果表明，该材料具有优异的强度（83 MPa）和优异的杨氏模量（2.37 GPa），并且其转变温度（接近250℃）是目前报道的3d打印形状记忆聚合物中最高的。此外，这种可重构性在微观水平上通过印迹各种表面图案得到了证明。此外，CU的可重构性为智能模具的变形和易脱模提供了一种新的策略。总的来说，本研究为高性能4D打印形状记忆聚合物的开发开辟了一条新的途径。

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引用次数: 0

Engineering flame and mechanical properties of natural plant-based fibre biocomposites 天然植物基纤维生物复合材料的工程火焰和力学性能

IF 9.9 Q1 MATERIALS SCIENCE, COMPOSITES

Advanced Industrial and Engineering Polymer Research

Pub Date : 2025-04-01 DOI: 10.1016/j.aiepr.2024.08.002

Mojtaba Ahmadi , Omid Zabihi , Zahra Komeily Nia , Vishnu Unnikrishnan , Colin J. Barrow , Minoo Naebe

The escalating global concerns surrounding unsustainable petroleum consumption have fueled interest in natural plant fiber polymer biocomposites (NFPCs) as eco-friendly alternatives. NFPCs offer advantages such as low density, specific mechanical properties, recyclability, and biodegradability. Despite their potential for addressing environmental issues and serving as cost-effective alternatives for per- and polyfluoroalkyl substances (PFAS) remediation, challenges exist due to their poor thermal stability and flammability. This comprehensive review delves into efforts to enhance the flame resistance of NFPCs, focusing on flammability testing methods, the impact of flame retardants, and underlying flammability mechanisms. Emphasizing the delicate balance between flame resistance and structural integrity, the review establishes a framework for understanding the thermo-structural response of burning NFPCs. Additionally, it explores sustainability and recycling aspects, offering insights crucial for comprehending fire-induced damage processes in NFPCs, especially in high-performance applications where exposure to high temperatures is inevitable.

全球对不可持续的石油消费的担忧不断升级，激发了人们对天然植物纤维聚合物生物复合材料（NFPC）作为生态友好型替代品的兴趣。天然植物纤维生物复合材料具有密度低、机械性能特殊、可回收和可生物降解等优点。尽管 NFPCs 具有解决环境问题的潜力，并可作为具有成本效益的替代品用于全氟和多氟烷基物质 (PFAS) 的修复，但由于其热稳定性差和易燃性，仍存在一些挑战。本综述深入探讨了为提高无氟氯化碳阻燃性所做的努力，重点关注阻燃性测试方法、阻燃剂的影响以及潜在的阻燃机制。本综述强调阻燃性和结构完整性之间的微妙平衡，为了解燃烧的无氟氯化碳的热结构反应建立了一个框架。此外，它还探讨了可持续发展和回收利用方面的问题，为理解无纺布泡沫塑料的火灾诱发损伤过程提供了重要见解，尤其是在不可避免地暴露于高温的高性能应用中。

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引用次数: 0

Synergistic effects of Psidium guajava and copper nanoparticles reinforced hybrid Hydrogel for tissue engineering 瓜爪哇紫金与铜纳米粒子增强杂化水凝胶在组织工程中的协同效应

IF 9.9 Q1 MATERIALS SCIENCE, COMPOSITES

Advanced Industrial and Engineering Polymer Research

Pub Date : 2025-04-01 DOI: 10.1016/j.aiepr.2024.10.001

D.V. Krishna , M.R. Sankar , P.V.G.K. Sarma , E.L. Samundeshwari

Hydrogels are biopolymers proficient in engrossing much water in their 3D network structure. However, single-polymer hydrogels frequently experience poor physio-mechanical properties, confining their border applications. The present work concentrated on developing chemically crosslinked hydrogels using the terpolymerization of gelatin (GEL), guar gum (GGM), and polyvinyl alcohol (PVA). Ethanolic extract of Psidium guajava leaf (EPG) and copper nanoparticles (CuNPs) were added to enhance the biomechanical properties of the developed hydrogels. Hydrogels' viscoelastic, mechanical, swelling, and cytotoxicity properties were assessed. All the hydrogels exhibited a porous-like structure with a swelling index of 230–280 %. A compressive strength of 5 MPa with splendid chondrocyte viability was noticed in the hydrogels comprised of EPG and CuNPs. The multiple interactions among the polymer chains impart better frequency and shear strain-dependent behavior. The time-dependent frictional behavior of hydrogel under the lubrication of artificial synovial fluid reveals the decreased coefficient of friction over time. The performance of the hybrid hydrogel enhanced with EPG and CuNPs was superior, making it a promising material for tissue engineering applications.

水凝胶是一种生物聚合物，能够在其三维网络结构中吸附大量水分。然而，单一聚合物水凝胶的物理机械性能往往较差，限制了其在边境地区的应用。本研究的重点是利用明胶（GEL）、瓜尔豆胶（GGM）和聚乙烯醇（PVA）的三元共聚，开发化学交联水凝胶。为了增强所开发水凝胶的生物力学特性，还添加了瓜蒌叶乙醇提取物（EPG）和纳米铜粒子（CuNPs）。对水凝胶的粘弹性、机械、膨胀和细胞毒性特性进行了评估。所有水凝胶都呈现多孔状结构，溶胀指数为 230-280%。由 EPG 和 CuNPs 组成的水凝胶具有 5 兆帕的抗压强度和出色的软骨细胞活力。聚合物链之间的多重相互作用带来了更好的频率和剪切应变行为。水凝胶在人工滑液润滑下随时间变化的摩擦行为表明，摩擦系数会随着时间的推移而降低。使用 EPG 和 CuNPs 增强的混合水凝胶性能优越，是一种很有希望应用于组织工程的材料。

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引用次数: 0

Advancements in Poly(ionic liquid) composites with carbon nanomaterials 碳纳米聚离子液体复合材料的研究进展

IF 9.9 Q1 MATERIALS SCIENCE, COMPOSITES

Advanced Industrial and Engineering Polymer Research

Pub Date : 2025-04-01 DOI: 10.1016/j.aiepr.2024.08.001

Hui Li , Jie Gao , Zhiyong Li , Yan Zhang , Jun Zhang , Shiguo Zhang

Carbon nanomaterials have become essential in modern daily life. Their porous nature and good electrical conductivity are critical for composite applications. However, their inherent van der Waals forces and π-π interactions often result in spontaneous aggregation, which significantly hinders the uniform dispersion of carbon materials in polymer matrices. Establishing interactions between poly(ionic liquid) (PIL) and carbon materials ensures excellent compatibility. Integrating carbon materials with PIL markedly enhances mechanical strength, electrical conductivity, and thermal stability, benefiting the electronics, energy storage, and automotive industries. A thorough understanding of the physical and chemical properties of PILs is crucial for tailoring composite materials to specific applications, enhancing processing capabilities, and boosting performance. This article reviews recent advancements in PIL composites incorporating carbon nanomaterials and outlines future challenges in their development.

碳纳米材料已经成为现代生活中必不可少的材料。它们的多孔性和良好的导电性对复合材料的应用至关重要。然而，它们固有的范德华力和π-π相互作用往往导致自发聚集，这严重阻碍了碳材料在聚合物基体中的均匀分散。聚离子液体（PIL）与碳材料之间的相互作用确保了优异的相容性。将碳材料与PIL相结合可显著提高机械强度、导电性和热稳定性，有利于电子、储能和汽车行业。全面了解pil的物理和化学特性对于根据特定应用定制复合材料、增强加工能力和提高性能至关重要。本文综述了含碳纳米材料的PIL复合材料的最新进展，并概述了其发展中的未来挑战。

引用次数: 0

Phase separation behavior of polymer modified asphalt by molecular dynamics and phase field method: A review 分子动力学和相场法研究聚合物改性沥青的相分离行为

IF 9.9 Q1 MATERIALS SCIENCE, COMPOSITES

Advanced Industrial and Engineering Polymer Research

Pub Date : 2025-04-01 DOI: 10.1016/j.aiepr.2024.12.002

Lin Chen , Ming Liang , Xin Wang , Xue Xin , Zhenchao Chen , Yuepeng Jiao , Jianjiang Wang , Yunfeng Zhang , Linping Su , Zhanyong Yao

The research on the micro-compatibility mechanisms of polymer-modified asphalt is crucial for the field of road engineering. In-depth exploration and understanding in this area is highly challenged due to the current lack of sophistication in research tools and the lack of precision in research results. This paper reviews the research progress on phase separation in modified asphalt from the perspectives of phase field theory and molecular dynamics theory, while thoroughly analyzing the strengths and weaknesses of both approaches. Explore a new simulation method using phase field theory coupled with molecular dynamics parameters to more comprehensively and accurately model the phase separation behavior and characteristics of modified asphalt. This paper summarizes the simulation process of phase separation in modified asphalt based on phase field theory. By combining this with fluorescence microscopy experiments, it establishes and tracks the evolution of micro and mesoscopic phase states in modified asphalt over time. By utilizing molecular dynamics to construct molecular models of modified asphalt, this paper identifies key parameters, i.e. interaction parameters and migration coefficients, that control the phase field model of modified asphalt. It reveals the laws of phase behavior in modified asphalt from both micro and mesoscopic perspectives. By comparing fluorescence microscopy experiments and analyzing the degree of image overlap with image analysis technology, the consistency of simulation results can be demonstrated. This approach provides a theoretical reference for studying phase separation phenomena in the field of polymer science.

聚合物改性沥青的微观相容性机理研究对道路工程领域至关重要。由于目前的研究手段不够先进，研究成果不够精确，对该领域的深入探索和理解面临很大挑战。本文从相场理论和分子动力学理论的角度回顾了改性沥青相分离的研究进展，同时深入分析了两种方法的优缺点。探索一种利用相场理论结合分子动力学参数的新模拟方法，以更全面、更准确地模拟改性沥青的相分离行为和特性。本文总结了基于相场理论的改性沥青相分离模拟过程。结合荧光显微镜实验，建立并跟踪了改性沥青中微观和介观相态随时间的演变过程。通过利用分子动力学构建改性沥青的分子模型，本文确定了控制改性沥青相场模型的关键参数，即相互作用参数和迁移系数。它从微观和中观两个角度揭示了改性沥青中相行为的规律。通过对比荧光显微镜实验，并利用图像分析技术分析图像重叠程度，可以证明模拟结果的一致性。这种方法为研究聚合物科学领域的相分离现象提供了理论参考。

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引用次数: 0

Synthesis of an environmentally friendly P–N synergistic flame retardant and its effect on the properties of epoxy resin 环保型P-N协同阻燃剂的合成及其对环氧树脂性能的影响

IF 9.9 Q1 MATERIALS SCIENCE, COMPOSITES

Advanced Industrial and Engineering Polymer Research

Pub Date : 2025-04-01 DOI: 10.1016/j.aiepr.2024.12.001

Hao Wang, Yinjie Wang, Chuang Yu, Xiaohui Xing, Peng Lin, Jiping Liu, Ye-Tang Pan

Additive flame retardants are increasingly frequently used in the current research on flame retardant techniques for polymer materials. In this work, 2-aminopyrazine and spiro-phosphorus oxychloride (SPDPC) were combined to create an environmentally friendly flame-retardant aminopyrazine spiro pentanol bisphosphonate (APPC). This solution addressed the issues of conventional flame retardant dispersion and low flame-retardant efficiency. The LOI value can reach 29.7 % with the addition of 7 wt% APPC, and the UL-94 test was able to achieve the V-0 rating. Furthermore, a remarkable decrease of 62.23 % in the peak heat release rate (pHRR), 51.23 % in the peak value of the CO production rate, and 63.57 % in the peak value of the CO₂ production rate was shown by the cone calorimeter experiment. The heat insulation and smoke suppression effect is also exceptional. According to the analysis of TG-FTIR, IR, XPS and SEM results, there is sufficient evidence that APPC as a phosphorus-nitrogen intumescent flame retardant (IFR), can produce beneficial effects in both catalyzing char formation and inhibiting toxic smoke production.

在当前高分子材料阻燃技术的研究中，添加剂阻燃剂的应用越来越广泛。本研究将2-氨基吡嗪与氧氯螺戊醇（SPDPC）合成了一种环保型阻燃剂氨吡嗪螺戊醇双膦酸酯（APPC）。该方案解决了传统阻燃剂分散性差、阻燃效率低等问题。添加7 wt%的APPC， LOI值可达29.7%，UL-94测试可达到V-0等级。此外，锥量热仪实验表明，CO2产率峰值降低了63.57%，释热率峰值降低了62.23%，CO产率峰值降低了51.23%。隔热抑烟效果也非常好。TG-FTIR、IR、XPS和SEM分析结果表明，APPC作为磷氮膨胀型阻燃剂（IFR）在催化成焦和抑制有毒烟雾方面都有良好的效果。

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引用次数: 0