通过本体结构改性方法制备出含氯改性芳纶Ⅲ纤维,并通过红外分析及元素分析确认含氯结构引入成功。力学性能、X射线衍射仪、热失重、差示扫描量热和动态热机械等手段的分析结果显示含氯结构的引入降低了干纱强度、结晶度、热分解温度和玻璃化转变温度,且玻璃化转变温度以上时,储能模量下降较明显,但浸胶丝强度和层间剪切强度得到明显提高,分别达到5313MPa和59MPa,证实含氯结构的引入有利于提高纤维与基体树脂的粘合性能。
The modified aramid Ⅲ fiber containing chlorine groups was prepared by the modification of the bulk structure,and the introduction of chlorine groups was confirmed by infrared analysis (IR) and elemental analysis (XPS,EDS).The results of mechanical properties analysis,x-ray diffraction analysis (XRD),thermal gravimetric analysis (TGA),differential scanning calorimetry (DSC) and dynamic mechanical analysis (DMA) showed that the introduction of chlorine groups into the molecular chain reduced the tenacity,crystallinity,thermal decomposition temperature and glass transition temperature of the prepared fiber.Meanwhile the storage modulus of modified fiber reduced obviously above the glass transition temperature.However,the strength of dipped yarn and interlaminar shear strength of modified fiber/epoxy resin were significantly improved to 5313MPa and 59MPa,respectively.It was confirmed that the introduction of chlorine groups into the molecule chain was beneficial to improve the adhesion between fiber and matrix resin.
[1] 侯晓,张炜,王凤德,等.芳纶Ⅲ纤维及其复合材料制品研究进展[J].中国材料进展,2010,29(12):59-62.
[2] 陈超峰,兰江,徐长刚,等.芳纶的老化性能[J].合成纤维,2013,42(12):1-6.
[3] 王怀颖,彭涛,王煦怡.芳纶Ⅲ材料在防弹装备领域的应用[J].警察技术,2017(1):64-71.
[4] 陈超峰,兰江,彭涛,等.俄罗斯芳纶发展概况及其制备、性能与应用[J].高科技纤维与应用,2014,39(1):26-30,44.
[5] Tikhonov I V,Tokarev A V,Shorin S V,et al.Chemistry and technology of chemical fibers russian aramid fibres:past-present-future[J].Fiber Chemistry,2013,45(1):1-8.
[6] 冯艳丽,赵海泉,胡淑芳,等.国产化高性能F-12纤维研究进展[C].湖南:第十六届全国复合材料学术会议论文集,2010.
[7] Wang J,Chen P,Li H,et al.The analysis of armos fibers reinforced poly(phthalazinone ether sulfone ketone) composite surfaces after oxygen plasma treatment[J].Surface & Coatings Technology,2008,202:4986-4991.
[8] Wang J,Chen P,Li H,et al.Surface characteristic of poly(p-phenyleneterephthalamide) fibers with oxygen plasma treatment[J].Surf Interface Anal,2008,40:1299-1303.
[9] Wang J,Chen P,Lu C,et al.Influence of aging behavior of armos fiber after oxygen plasma treatment on its composite interfacial properties[J].Surface & Coatings Technology,2009,203:3722-3727.
[10] Liu L,Huang Y D,Zhang Z Q,et al.Ultrasonic treatment of aramid fiber surface and its effect on the interface of aramid/epoxy composites[J].Applied Surface Science,2008,254:2594-2599.
[11] Zhang Y H,Huang Y D,Liu L,et al.Effects of g-ray radiation grafting on aramid fibers and its composites[J].Applied Surface Science,2008,254:3153-3161.
[12] Zhang Y H,Huang Y D,Liu L,et al.Surface modification of aramid fibers with g-ray radiation for improving interfacial bonding strength with epoxy resin[J].Journal of Applied Polymer Science,2007,106:2251-2262.
[13] 刘冬冬,扈艳红,张芳芳,等.叠氮苯并咪唑偶联剂增强芳纶Ⅲ/聚三唑树脂复合材料界面[J].复合材料学报,2017,34(2):336-343.
[14] Peng T,Cai R Q,Chen C F,et al.Surface modification of para-aramid fiber by direct fluorination and its effect on the interface of aramid/epoxy composites[J].Journal of Macromolecular Science,Part B:Physics,2012,53:538-550.
[15] 张阳,方毅,刘向阳,等.氟化改性国产芳纶Ⅲ纤维(F-3A)复合材料的界面性能[J].高分子材料科学与工程,2016,32(1):68-73.
[16] 杨文良,龚维友,杨杰,等.典型高性能芳纶及其复合材料性能研究[J].高科技纤维与应用,2014,39(2):57-59,74.
[17] 王凤德,陈超峰,彭涛,等.苯并咪唑杂环改性芳纶的结构与性能[J].固体火箭技术,2012,35(4):536-540.
PDF
(1532KB)
