Composites Communications最新文献

MOF and MOF-derived composites for flexible energy storage devices 用于柔性储能设备的 MOF 和 MOF 衍生复合材料

IF 6.5 2区材料科学

Composites Communications Pub Date : 2024-11-03 DOI: 10.1016/j.coco.2024.102144

引用次数: 0

Staggered distribution structure Cu-Mn catalysts for mitigating smoke and gas toxicity in combustion: Unravelling mechanistic insight through operando studies 交错分布结构铜锰催化剂用于减轻燃烧中的烟气毒性：通过操作研究揭开机理之谜

IF 6.5 2区材料科学

Composites Communications Pub Date : 2024-10-30 DOI: 10.1016/j.coco.2024.102142

{"title":"Staggered distribution structure Cu-Mn catalysts for mitigating smoke and gas toxicity in combustion: Unravelling mechanistic insight through operando studies","authors":"","doi":"10.1016/j.coco.2024.102142","DOIUrl":"10.1016/j.coco.2024.102142","url":null,"abstract":"<div><div>The integration of flame retardancy and environmental friendliness can be achieved by designing cost-effective, stable, and efficient catalysts to reduce smoke and toxicity during the combustion of polymeric materials. This work reports the development of non-precious metal catalysts for thermoplastic polyurethanes (TPU), which exhibit a significant reduction in smoke and gases toxicity while providing flame retardancy. The use of MgB<sub>2</sub> as a support enables the in-situ growth of highly efficient Cu-Mn based catalysts, resulting in a remarkable 51.5 % decrease in total smoke release and a 49.1 % reduction in peak rate of CO generation of TPU according to cone calorimeter test results. Furthermore, Cu-Mn/MgB<sub>2</sub> demonstrates an impressive 83.1 % reduction in total CO production rate during the steady-state tube furnace test. Additionally, density functional theory is employed to analyze the binding energy between catalysts and TPU as well as the adsorption energy of gases. This elucidates the rational reaction mechanism behind the catalyst and smoke inhibiting process. By combining transition metal oxide catalyzed CO oxidation reaction with polymeric material combustion, this study presents a promising approach for efficient smoke suppression with potential applications.</div></div>","PeriodicalId":10533,"journal":{"name":"Composites Communications","volume":null,"pages":null},"PeriodicalIF":6.5,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142571642","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}

引用次数: 0

Aligning halloysite nanotubes in elastomer toward flexible film with enhanced dielectric constant 在弹性体中排列埃洛石纳米管，形成具有更高介电常数的柔性薄膜

IF 6.5 2区材料科学

Composites Communications Pub Date : 2024-10-29 DOI: 10.1016/j.coco.2024.102140

引用次数: 0

Surface oxidation engineering for enhanced interface bonding achieving excellent electronic properties in multilayer nitrogen doped graphene/Cu composites wires 在多层掺氮石墨烯/铜复合材料导线中利用表面氧化工程增强界面键合，从而实现优异的电子特性

IF 6.5 2区材料科学

Composites Communications Pub Date : 2024-10-29 DOI: 10.1016/j.coco.2024.102139

引用次数: 0

Interfacial crystallization behavior and properties of T1100-grade carbon fiber reinforced PEEK composites T1100 级碳纤维增强 PEEK 复合材料的界面结晶行为和性能

IF 6.5 2区材料科学

Composites Communications Pub Date : 2024-10-28 DOI: 10.1016/j.coco.2024.102133

引用次数: 0

SWCNT/PEDOT:PSS/TPU electrothermal composites for flexible, wearable heater under low temperature environmental conditions 用于低温环境条件下柔性可穿戴加热器的 SWCNT/PEDOT:PSS/TPU 电热复合材料

IF 6.5 2区材料科学

Composites Communications Pub Date : 2024-10-28 DOI: 10.1016/j.coco.2024.102138

引用次数: 0

Synergistic effect of in-situ TiB2 particle and Ti solute on the microstructure and mechanical properties of cast Al-Li-Cu-X matrix composite 原位 TiB2 粒子和 Ti 溶质对铸造 Ali-Li-Cu-X 基复合材料微观结构和力学性能的协同效应

IF 6.5 2区材料科学

Composites Communications Pub Date : 2024-10-28 DOI: 10.1016/j.coco.2024.102136

{"title":"Synergistic effect of in-situ TiB2 particle and Ti solute on the microstructure and mechanical properties of cast Al-Li-Cu-X matrix composite","authors":"","doi":"10.1016/j.coco.2024.102136","DOIUrl":"10.1016/j.coco.2024.102136","url":null,"abstract":"<div><div>This study systematically investigated the effects of in-situ TiB<sub>2</sub> particles and Ti solutes on the grain structure, nanosized precipitates, precipitate-free zone (PFZ) near the grain boundaries, and the overall performance of the Al-Li-Cu-<em>X</em> alloy. The TiB<sub>2</sub> particles are predominantly hexagonal or equiaxed in shape, with sizes primarily ranging from 30 to 250 nm and an average size of 126 nm. The addition of TiB<sub>2</sub> particles and Ti solutes effectively refines the grain size of the alloy. Incorporating in-situ TiB<sub>2</sub> particles significantly improves the Young's modulus and hardness of the composites. Furthermore, the presence of TiB<sub>2</sub> particles and Ti solutes accelerates the aging process, thereby reducing the time required to reach peak aging. During aging, δ′ precipitates gradually grow while decreasing in number density. TiB<sub>2</sub> particles have little effect on the size and number density of δ′ precipitates; however, TiB<sub>2</sub> particles promote the nucleation of T<sub>1</sub>-Al<sub>2</sub>CuLi precipitates, leading to more uniform and finer T<sub>1</sub> precipitates in the composites compared to the alloy without TiB<sub>2</sub> reinforcement. The half-width of δ′-PFZ in the Al-Li-Cu alloy and its composites follows the order: Ti-free composite > 1TiB<sub>2</sub> composite > 5M2S alloy. This indicates that adding TiB<sub>2</sub> particles facilitates the growth of the δ′-PFZ, while Ti solutes significantly inhibit its broadening. Moreover, lower aging temperatures enhance the inhibitory effect on the broadening of the δ′-PFZ. The addition of Ti solutes and in-situ TiB<sub>2</sub> particles leads to a significant improvement in mechanical properties. Critically, the underlying mechanisms driving the microstructural evolution and the resulting mechanical performance were thoroughly analyzed.</div></div>","PeriodicalId":10533,"journal":{"name":"Composites Communications","volume":null,"pages":null},"PeriodicalIF":6.5,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142539095","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}

引用次数: 0

Enhanced interfacial thermal conductivity of functionalized boron nitride/polyvinyl alcohol/octadecane composite phase-change materials towards effective thermal management 增强功能化氮化硼/聚乙烯醇/十八烷复合相变材料的界面导热性，实现有效热管理

IF 6.5 2区材料科学

Composites Communications Pub Date : 2024-10-28 DOI: 10.1016/j.coco.2024.102135

{"title":"Enhanced interfacial thermal conductivity of functionalized boron nitride/polyvinyl alcohol/octadecane composite phase-change materials towards effective thermal management","authors":"","doi":"10.1016/j.coco.2024.102135","DOIUrl":"10.1016/j.coco.2024.102135","url":null,"abstract":"<div><div>Composite phase-change materials (CPCMs) with leakage-free phase transition are widely used in electronic devices and lithium batteries for efficient thermal management. However, the current CPCMs suffer from low thermal conductivity, which hampers their heat transfer efficiency. This study proposes a novel CPCM based on a functionalized boron nitride nanosheet (BNNS)/polyvinyl alcohol (PVA) porous skeleton infused with <em>n</em>-octadecane (Oct). The interfacial compatibility between BN/PVA is enhanced by employing (3-aminopropyl) triethoxysilane (KH550) as a bridging agent. Experimental investigations and molecular dynamics simulations demonstrate that KH550-modified BNNS exhibits lower interfacial thermal resistance (ITR) to PVA compared to hydroxy (-OH) and dopamine (DA)-modified counterparts. The resulting BNNS-KH550/PVA/Oct CPCM exhibits exceptional latent heat value of 171.95 J g<sup>−1</sup>, high thermal conductivity of 0.839 W m<sup>−1</sup> K<sup>−1</sup>, remarkable compressive strength of 3.82 MPa, with excellent electrical insulation and minimal leakage issues. These outstanding comprehensive performances of the CPCM validate its potential applications.</div></div>","PeriodicalId":10533,"journal":{"name":"Composites Communications","volume":null,"pages":null},"PeriodicalIF":6.5,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142532863","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}

引用次数: 0

Damage monitoring on inter-lamination of GFRP via the resistance change of the MWCNT@GF sensor 通过 MWCNT@GF 传感器的电阻变化监测 GFRP 层间损坏情况

IF 6.5 2区材料科学

Composites Communications Pub Date : 2024-10-26 DOI: 10.1016/j.coco.2024.102137

引用次数: 0

Ameliorating the comprehensive performance of rigid polyurethane foam insulating materials by green cork for building energy conservation 利用绿色软木改善硬质聚氨酯泡沫隔热材料的综合性能，促进建筑节能

IF 6.5 2区材料科学

Composites Communications Pub Date : 2024-10-22 DOI: 10.1016/j.coco.2024.102132

引用次数: 0