汽车轻量化的碳纤维复合材料应用分析

为将碳纤维复合材料与汽车轻量化技术充分结合,形成完善的制造体系,并将废料回收处理实现节能减排的目的.文章针对汽车轻量化技术进行阐述,介绍了碳纤维复合材料高效成型技术以及低成本碳纤维技术,分析碳纤维复合材料在汽车车身构件、刹车片、轮毂、传动轴等中的具体应用,同时针对碳纤维废料的问题,对物理、热解、化学溶剂三大回收方法进行分析.     

塑料与碳纤维复合材料在汽车轻量化中的应用

本文从汽车轻量化出发,首先分析汽车轻量化发展的重要意义及发展现状,然后分别根据塑料和碳纤维复合材料两种新型材料的特性及优势,对其在汽车轻量化中的应用展开探讨。     

从汽车环保和轻量化展望复合材料发展趋势

<正>1.汽车工业的研究方向汽车产业在世界各地蓬勃发展的同时,也带来环境污染和能源短缺两大严重的负面影响。据调查,石油消费品中,其中35%是作为汽车的燃料被使用,可见汽车燃料消耗占有很大比重。这种状况必将导致汽车行业的研究方向进行相应调整――轻量、节能和环保成为国际汽车工业研究的主题。轻量和节能——为减轻汽车产品自重,节省材料,降低汽车燃油消耗和低排量,降低生产和使用成     

高分子复合材料在汽车轻量化方面的研究进展

介绍了高分子复合材料在汽车材料轻量化技术方面的发展,阐述了高分子复合材料的性能优势和制造工艺以及高分子复合材料在新能源汽车中的应用现状,并对高分子材料的发展给出了相关建议.     

材料加工技术创新与汽车轻量化探究

随着汽车行业的不断发展,轻量化是目前汽车发展的趋势为汽车的,因此在汽车制造材料中,越来越多的新型轻质材料以及加工技术不断出现。因此首先介绍了现阶段在汽车制造行业中新型的成型加工工艺,进而分析了新型的轻质汽车制造材料。     

碳纤维复合材料(CFRP)在汽车轻量化中的应用

针对传统汽车在制造过程中存在的高油耗、质量大、安全性低等问题,采用将碳纤维复合材料(CFRP)应用于汽车零部件制造过程的方式,并结合计算机辅助工程(CAE)对汽车进行结构优化,可有效根据汽车的不同结构及用途灵活的对产品进行设计及加工成型,有利于最大限度的减轻汽车整体质量,利用碳纤维复合材料超高的自身频率及吸收震动能量,使该材料的震动阻尼系数不断增高,在汽车遭受冲击时,碳纤维复合材料可有效吸收冲击能量,提高驾驶人员的安全性。将该材料应用于汽车生产领域,可实现降低油耗、减少排放的目的。     

万华聚氨酯复合材料助力汽车轻量化

<正>在汽车结构中,聚氨酯玻纤增强纸蜂窝复合材料可应用于天窗、备胎盖板、行李箱隔板和搁物板等多个部位;另外,该复合材料还可广泛应用于建筑装饰、家具和运动器材等领域,是替代传统环氧类和聚丙烯树脂的理想材料。为满足汽车制造业对于轻量化、高强度且易加工材料的不同需求,万华化学(北京)有限公司研发出了性能     

第2届中国国际汽车复合材料与汽车轻量化创新材料成型技术高峰论坛

《纤维复合材料》杂志社连续2年联合中国汽车工程学会、中国汽车轻量化技术创新战略联盟、上汽集团、一汽集团、奇瑞汽车等整车与相关零部件企业共同举办了“中国国际汽车复合材料与汽车轻量化创新材料成型技术高峰论坛”。今年6月19—20日,在上海举办的第2届中国国际汽车复合材料与汽车轻量化创新材料成型技术高峰论坛上,中国汽车工程研究院副总师、上汽新能源和技术部总师、上汽乘用车公司车身总监、北京航空航天大学、北京化工大学、海源集团等汽车和复合材料行业专家们共同探讨了国内外新能源汽车和传统汽车轻量化中复合材料与新材料的应用前景,认为：     

高分子材料在汽车轻量化中的应用及发展趋势

采用高分子复合材料作为汽车轻量化的核心材料,可提升汽车车身的强度及刚度,增强零件的耐磨损性能,并降低汽车耗油量以及有害气体的排放。通过汽车轻量化设计,可在不增加汽车自身质量的前提下,完成汽车附件的安装,以此保证汽车的节能减排效果,同时促进汽车工业领域的发展。     

“轻量化”文章激活现代汽车的创新塑料厂商市场掘金

<正>塑料是人工合成的高分子材料,由于其绝缘、稳定、耐热、耐腐蚀等特性,亦被称为千用材料。塑料作为现代科技的产物,如今已经广泛地渗透到生活的各个领域,给人们带来巨大的便利。轻量化不是一个新鲜的话题,以塑料制件替代金属制品早已经成为汽车以及高铁列车等交通工具减重最主要的技术手段,其明显的作用就是     

Preparation of composites based on recycled polypropylene and automotive shredder residue

In past research, mechanical recycling of automotive shredder residue (ASR) has led to serious deterioration of material performance, and real‐scale application in this way still remains a challenge. Here, we report a sustainable approach called solid‐state shear milling (SSSM) for the production of high‐performance polypropylene (PP)/ASR composites with robust mechanical performance on a commercial scale. After the SSSM process, the obtained 50/50 wt% PP/ASR composite exhibited a 41.3% increase in tensile strength, 32.9% increase in flexural strength and 55.0% increase in impact toughness when compared with corresponding composites made by traditional direct melt blending. In particular, the toughness of the material can be improved by further addition of PP grafted with maleic anhydride with toughness comparable to that of recycled PP, and a 325% increase in toughness can be obtained with addition of styrene–butadiene–styrene block copolymer grafted with maleic anhydride. This PP/ASR composite shows good processability and high thermal stability, and meets the requirements of many applications for nonstructural products. The approach presented in this paper highlights a novel technique for ASR recycling. © 2018 Society of Chemical Industry     

日本碳纤维复合材料在汽车领域应用的新进展

介绍了日本碳纤维生产企业近几年的扩产计划与战略布局,以及日本碳纤维生产企业与合作科研单位在碳纤维复合材料（CFRP）的研发进展情况.指出占据世界碳纤维市场70％份额的日本碳纤维生产商一贯高度重视CFRP的下游应用,尤其率先在汽车领域应用研发的大量投入,成为全球碳纤维行业发展的领衔者,亟须我国碳纤维产业的顶层设计和从业者们的高度重视和借鉴.     

玻璃窑用轻质镁橄榄石砖的研制

为了开发玻璃窑用碱性耐火隔热产品,以镁橄榄石砂和镁砂为主原料制备了轻质镁橄榄石砖,并研究了结合剂种类(分别为MgCl2.6H2O、亚硫酸盐纸浆和QH)及其加入量(质量分数分别为5%、7.5%和10%)、添加剂加入量(质量分数分别为2%、3%、4%和5%)、造孔剂菱镁矿加入量(质量分数分别为10%、15%、20%、28%和36%)以及烧成温度(分别为1 300、1 350、1 400、1 450和1 500℃)对轻质镁橄榄石砖的影响。结果表明:以镁橄榄石砂为主要原料,添加36%(w)的造孔剂和4%(w)的添加剂,同时外加7.5%(w)的QH作结合剂,干燥后于1 400℃保温2 h煅烧,可以生产出体积密度为1.84 g.cm-3,显气孔率为43%,耐压强度为10 MPa,热导率(800℃)为0.63 W.m-1.K-1的玻璃窑用轻质镁橄榄石砖。     

聚乙二醇改性双马来酰亚胺-三嗪树脂/玻璃纤维布复合材料的热性能

聚乙二醇对树脂基玻璃纤维布复合材料增韧具有优良的效果,但其柔性链段的分子结构本质极大影响了复合材料的耐热性能。本文以聚乙二醇为改性剂制备了聚乙二醇/BT树脂/玻璃纤维布复合材料,系统研究了不同分子链长度以及不同含量的聚乙二醇对复合材料热性能的影响。研究结果表明：聚乙二醇的加入降低了复合材料的玻璃化转变温度、5%热失重温度以及800 ℃残炭率。在聚乙二醇相对分子质量为4000时,复合材料的热性能出现最大值。随聚乙二醇含量的增加,复合材料的热稳定性能逐步下降。由于聚乙二醇、BT树脂、玻璃纤维布之间较大的界面结合力,使基体树脂的链运动受到一定程度的限制,一定程度上缓解了由于聚乙二醇的加入而使复合材料的热稳定性能下降的趋势。研究结果为合理添加聚乙二醇而提高复合材料的韧性提供了热性能方面的参考依据。     

Recycling carbon fiber composites using microwave irradiation: Reinforcement study of the recycled fiber in new composites

With increasing use of carbon fiber reinforced polymer (CFRP) composites in transportation, sports, and many other industries, recycling of the scrap and end‐of‐life composites has presented both great challenges and opportunities. In this work, we report our study on reclaiming carbon fibers from CFRP using energy efficient microwave irradiation. Different irradiation conditions were used and the optimal conditions were determined based on the surface morphology of the recycled fiber. Polypropylene (PP) and Nylon, representing nonpolar and polar polymers, respectively, were reinforced using the recycled fiber through extrusion and injection molding. For comparison, PP and Nylon reinforced by virgin carbon fiber were also prepared using the same processing conditions. Tensile, flexural, and impact test results showed that, while both carbon fibers could improve these properties, they exhibited different reinforcing effects on the two polymers. The recycled fiber outperformed the virgin fiber in reinforcing PP whereas the virgin fiber performed better in Nylon. This was due to the differences in surface roughness, surface bonding, and fiber aspect ratio between the two fibers. This study shows the great potential of recycled carbon fiber and microwave irradiation as an effective recycling technique. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015 , 132, 42658.     

Modification of cellulose fibers with functionalized silanes: Effect of the fiber treatment on the mechanical performances of cellulose–thermoset composites

Unsaturated polyester and epoxy resin matrices were filled with silane‐treated cellulose fibers and the ensuing composites were tested in terms of mechanical properties before and after accelerated aging consisting of their immersion into water. The coupling agents used were γ‐aminopropyltriethoxysilane (APS), γ‐methacrylopropyltrimethoxysilane (MPS), hexadecytrimethoxysilane, and γ‐mercaptopropyltrimethoxysilane (MRPS) and those containing reactive functions capable of reacting at one end with the fibers and at the other with the matrix, namely, APS, MPS, and MRPS, were more efficient in improving the mechanical properties of the composites. The immersion into water induced a drastic loss of mechanical properties of the materials. The water uptake of the composites was also studied and showed that the silane treatment was poorly efficient in preventing cellulose from water absorption. The fracture surfaces were inspected by scanning electron microscopy, which confirmed the quality of the interface. These observations were in agreement with the results obtained from the dynamic mechanical characterization. © 2005 Wiley Periodicals, Inc. J Appl Polym Sci 98: 974–984, 2005     

碳纤维增强树脂基复合材料的应用研究

碳纤维增强树脂基复合材料以其优异的综合性能成为当今世界材料学科研究的重点。本文介绍了的碳纤维增强复合材料的性能，简述了增强机理、成型工艺及其应用领域和发展趋势。     

Structure and properties of UHMWPE fiber/carbon fiber hybrid composites

Ultrahigh molecular weight polyethylene (UHMWPE) fiber/carbon fiber hybrid composites were prepared by inner‐laminar and interlaminar hybrid way. The mechanical properties, dynamic mechanical analysis (DMA), and morphologies of the composites were investigated and compared with each other. The results show that the hybrid way was the major factor to affect mechanical and thermal properties of hybrid composites. The resultant properties of inner‐laminar hybrid composite were better than that of interlaminar hybrid composite. The bending strength, compressive strength, and interlaminar shear strength of hybrid composites increased with an increase in carbon fiber content. The impact strength of inner‐laminar hybrid composite was the largest (423.3 kJ/m²) for the UHMWPE fiber content at 43 wt % to carbon fiber. The results show that the storage modulus (E′), dissipation factor (tan δ), and loss modulus (E″) of the inner‐laminar hybrid composite shift toward high temperature remarkably. The results also indicate that the high‐performance composite with high strength and heat resistance may be prepared by fibers' hybrid. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 101: 1880–1884, 2006     

Discontinuous carbon fiber/polyamide composites with microencapsulated paraffin for thermal energy storage

This work focuses on the development of multifunctional thermoplastic composites with thermal energy storage capability. A polyamide 12 (PA12) matrix was filled with a phase change material (PCM), constituted by paraffin microcapsules (T_melt = 43 °C), and reinforced with carbon fibers (CFs) of two different lengths (chopped/CF “long”[CFL] and milled/CF “short” [CFS]). DSC tests showed that the melting/crystallization enthalpy values increase with the PCM weight fraction up to 60 J/g. The enthalpy was 41–94% of the expected value and decreased with an increase in the fiber content, because the capsules were damaged by the increasing viscosity and shear stresses during compounding. Long CFs increased the elastic modulus (+316%), tensile strength (+26%), and thermal conductivity (+54%) with respect to neat PA12. Thermal imaging tests evidenced a slower cooling for the samples containing PCM, and once again the CFS-containing samples outperformed those with CFL, due to the higher effective PCM content. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019 , 136, 47408.     

碳纤维在电磁屏蔽材料中的应用研究

本文简要介绍了电磁屏蔽的原理和碳纤维的性能，分析、论述了碳纤维在聚合物基电磁屏蔽材料中应用研究的主要形式．