欢迎登录材料期刊网

材料期刊网

高级检索

采用微滴包埋拉出测试的方法,分别测定两种不同表面性质中间相沥青基碳纤维与环氧树脂的界面剪切强度(σIFSS)。从负载-位移曲线读取树脂小球从碳纤维上脱落时的脱粘力值,并利用扫描电子显微镜观察了脱粘树脂小球和碳纤维的状态,然后定量地计算出σIFSS的平均值以及其标准方差、离散系数,并讨论了σIFSS同树脂小球的长度与直径、纤维直径的关系,研究发现:所测量的界面剪切强度值与环氧树脂小球的长径比正比,与纤维直径成反比,与环氧树脂小球的长度和纤维直径的比值反比,与环氧树脂小球的直径和纤维直径的比值成反比。

The interfacial shear strengths between two kinds of mesophase pitch-based carbon fibers and epoxy resin matrix were respectively measured by microbond test. The forces when microdebonding occurring between resin microdroplets and carbon fibers were obtained from the load-displacement curve, and the morphologies of debonded microdroplets and carbon fibers were observed by scanning electron microscopy. Then, the average interfacial shear strength, standard deviation and coefficient of variation for samples were quantitatively calculated. Moreover, the relationships between interfacial shear strength and the lengths, diameters of microdroplets, carbon fiber diameter were analyzed. The results show that interfacial shear strength is proportional to the ratio of length-to-diameter of the resin microdroplet, and inversely proportional to the carbon fiber diameter, to the ratio of the microdroplet length-to-carbon fiber diameter, and to the ratio of the microdroplet diameter-to-carbon fiber diameter.

参考文献

[1] FITZER E. The future of carbon-carbon composites[J]. Carbon, 1987, 25(2):163-190.
[2] SALAZAR A, SÁNCHEZ-LAVEGA A. Measurements of the thermal diffusivity tensor of polymer-carbon fiber composites by photothermal methods[J]. International Journal of Thermophysics, 1998, 19(2):625-636.
[3] NASCIMENTO J F, EZQUERRA T A, SEFERIS J C. Anisotropy of electrical conductivity and structure in polymer-carbon fiber composite materials[J]. Polymer Composites, 1995, 16(2):109-113.
[4] LINARES-SOLANO A, IBARRA-RUEDA L. Influence of the nature and the content of carbon fiber on properties of thermoplastic polyurethane-carbon fiber composites[J]. Journal of Applied Polymer Science, 2003, 90(10):2676-2683.
[5] ZHANDAROV S, MÄDER E. Characterization of fiber/matrix interface strength:applicability of different tests, approaches and parameters[J]. Composites Science and Technology, 2005, 65(1):149-160.
[6] MILLER B, GAUR U, HIRT D E. Measurement and mechanical aspects of the microbond pull-out technique for obtaining fiber/resin interfacial shear strength[J]. Composites Science and Technology, 1991, 42(1-3):207-219.
[7] GAO X, JENSEN R E, MCKNIGHT S H, et al. Effect of colloidal silica on the strength and energy absorption of glass fiber/epoxy interphases[J]. Composites Part A:Applied Science and Manufacturing, 2011, 42(11):1738-1747.
[8] WANG H, WANG H K, LI W J, et al. An improved microbond test method for determination of the interfacial shear strength between carbon fibers and epoxy resin[J]. Polymer Testing, 2013, 32(8):1460-1465.
[9] TRAN M Q, HO K K C, KALINKA G, et al. Carbon fibre reinforced poly(vinylidene fluoride):impact of matrix modification on fibre/polymer adhesion[J]. Composites Science and Technology, 2008, 68(7-8):1766-1776.
[10] GAUR U, MILLER B. Microbond method for determination of the shear strength of a fiber/resin interface:evaluation of experimental parameters[J]. Composites Science and Technology, 1989, 34(1):35-51.
[11] MILLER B, MURI P, REBENFELD L. A microbond method for determination of the shear strength of a fiber/resin interface[J]. Composites Science and Technology, 1987, 28(1):17-32.
[12] LIU B Y, LIU Z, WANG X J, et al. Interfacial shear strength of carbon fiber reinforced polyphenylene sulfide measured by the microbond test[J]. Polymer Testing, 2013, 32(4):724-730.
[13] DENG F, LU W B, ZHAO H B, et al. The properties of dry-spun carbon nanotube fibers and their interfacial shear strength in an epoxy composite[J]. Carbon, 2011, 49(5):1752-1757.
[14] KANG S K, LEE D B, CHOI N S. Fiber/epoxy interfacial shear strength measured by the microdroplet test[J]. Composites Science and Technology, 2009, 69(2):245-251.
[15] CHOI N S, PARK J E. Fiber/matrix interfacial shear strength measured by a quasi-disk microbond specimen[J]. Composites Science and Technology, 2009, 69(10):1615-1622.
[16] DAY R J, RODRIGEZ J V C. Investigation of the micromechanics of the microbond test[J]. Composites Science and Technology, 1998, 58(6):907-914.
上一张 下一张
上一张 下一张
计量
  • 下载量()
  • 访问量()
文章评分
  • 您的评分:
  • 1
    0%
  • 2
    0%
  • 3
    0%
  • 4
    0%
  • 5
    0%