摘要
以一种中温固化和一种高温固化环氧树脂体系为研究对象,采用差示扫描量热法(DSC)和红外光谱法(IR)对树脂及其碳纤维预浸料的固化反应过程进行了研究,重点考察了碳纤维种类及其表面化学特性对树脂固化反应的影响。结果表明,T300和CCF-1碳纤维对环氧E-51/咪唑体系的固化速度有加速作用,尤其在较低升温速率和较低恒温温度的情况下加速作用更为明显;对于环氧E-51/DDS体系,T300使树脂的固化速度增大,在较低升温速率和较低恒温温度的情况下表现更为明显,而CCF-1对该树脂体系的固化速度没有明显影响,这种差异与两种碳纤维上浆剂所含有的活性基团不同有关,纤维表面上浆剂中的活性基团参与了树脂的固化反应,从而影响树脂固化过程,因此复合材料固化过程的控制需要考虑碳纤维上浆剂对树脂固化反应的影响。
For a middle temperature curing epoxy resin system and a high temperature curing one,the effect of types and surface chemical characteristics of fiber on the resin curing were studied using differential scanning calorimetry(DSC) and infrared spectrometry(IR).The results show that T300 and CCF-1 carbon fiber can accelerate the curing speed of epoxy E-51/2E4MZ resin system,especially at lower heating rate in lower constant temperature.For epoxy E-51/DDS resin system,the increase of the curing speed by the T300 carbon fiber is obvious at lower heating rate in lower constant temperature,while the influence of the CCF-1 carbon fiber on the resin curing can be ignored.This phenomenon results from the different active groups of sizing agent,which are involved in the curing reaction and affect the resin curing.Therefore,the influence of sizing agent in the resin curing should be considered in the composite material curing process.
出处
《玻璃钢／复合材料》
CAS
CSCD
北大核心
2012年第5期47-53,8,共8页
Fiber Reinforced Plastics/Composites
基金
国家863计划重点项目“MW级风力发电机组风轮叶片原材料国产化”
