玻璃纤维－环氧树脂预浸料的物理化学表征

利用红外光谱等分析测试技术研究了S2高强玻璃纤维-环氧树脂预浸料在不同温度储存条件下,微观结构变化与储存温度之间的关系和在常温储存条件下微观结构与宏观力学性能之间的关系,从而为选择预浸料储存条件提供依据,为预浸料的质量控制提供控制参数和量化指标.      

国外FRP预浸料发展概况

预浸料是用树脂预先浸渍,可以储存的纤维增强塑料（FRP）半成品,随时可以用来制造复合材料制品。预浸料有热固性和热塑性预浸料之分。因它们容易使用、性能稳定、空隙率低、模塑过程清洁等诸多优点,预浸料在复合材料工业中日趋普遍,前景甚好。     

碳纤维预浸料用中温固化环氧树脂体系

针对碳纤维预浸料常用环氧树脂体系的一些基本特点,以常温下为固体状态的环氧树脂混合物为基体,采用双氰胺为中温固化剂的固化体系,研究了双氰胺固化剂用量对环氧树脂体系黏度、力学性能、热学性能、溶胀性能的影响,对碳纤维预浸料用环氧树脂体系的研发及应用具有一定参考意义。     

风电叶片用国产碳纤维预浸料工艺性能和力学性能研究

应用碳纤维制备风电叶片结构件是大型风电叶片制作技术的一个发展方向。为推动国产碳纤维的发展应用,给出了风电叶片对碳纤维预浸料的技术要求,研究了国产碳纤维预浸料和进口碳纤维预浸料的力学性能和工艺性能,通过对比分析发现,面密度低的国产碳纤维预浸料力学性能高于进口碳纤维预浸料,但面密度≥600g/m2的国内碳纤维预浸料的工艺性能较差,需要进一步改进。     

环氧树脂/玻璃布复合材料拉伸剪切性能研究

本文介绍了浸渍方法、浸渍参数、树脂粘度及层压板纤维体积含量对环氧树脂/玻璃布拉伸剪切性能的影响。     

烯丙基线性酚醛树脂改性BMI树脂基复合材料的研究

文中叙述了以烯丙基线性酚醛树脂(AF)改性BMI树脂基体制得的玻璃布复合材料的概况,对树脂基体、预浸料及复合材料的性能进行了研究。     

多层板材料的技术动向

概述了多层板材料的技术动向和特性。     

Effects of hygrothermal and ambient humidity conditioning on shear strength of metal–GFRP single lap joints co-cured in and out of water

Installing and repairing of oil and gas infrastructure is required to be conducted out of water (OW) and in water (IW). In service, this infrastructure is subjected to various environmental ageing which may affect its mechanical performance. In this study the shear strength of metal–glass epoxy prepreg composites was investigated using single lap joint (SLJ) testing. For this, three different surface preparation methods (grit blasting, wire brushing and needle gunning) and two different manufacturing methods (OW and IW) were employed. Results showed that the specimens prepared by grit blasting had superior shear strength followed by these by needle gunning and wire brushed for both OW and IW methods. Manufactured specimens were also subjected to hygrothermal conditioning (WC) and ambient humidity conditioning (HC) to assess the durability of the produced SLJ specimens. The WC specimens absorbed more moisture than the HC specimens and the shear strength of the WC specimens were found to have deteriorated more than the HC specimens. For the conditioned SLJ specimens, the lower loss of shear strength was found with specimens manufactured IW when compared to specimens manufactured OW for grit blasted and needle gunned specimens and an opposite trend was seen for wire brushed specimens. However, the loss of shear strength was found to be varied with the moisture uptake for individual surface preparation technique and the variation was considered to be due to a combination of many factors other than the type of adhesive used such as metal surface profile, failure mode, rust formation and presence of black coloured metallic remnants.     

锥板粘度计法测定树脂及其预浸料的凝胶时间

介绍了用锥板粘度计测定树脂及其预浸料凝胶时间的方法,并通过实验与现行的电热板法进行了比较.结果表明锥板粘度计法具有设备简单、测试速度快、消除人为影响、重现性好和数据准确的特点.适于预浸料生产过程中间控制以及树脂及其预浸料的质量表征.     

H300碳纤维及其预浸料性能研究

对H300碳纤维性能进行了测试,结果表明H300碳纤维与T300碳纤维力学性能基本相当。试验了3238A/H300碳纤维热熔预浸料制造工艺,制造出合格预浸料。测试了3238A/H300碳纤维复合材料物理力学性能,结果表明3238A/H300碳纤维复合材料满足要求。