Dissertation > Excellent graduate degree dissertation topics show

Evolution Rules of Hygrothermal Properties of CCF300/Hby8485

Author: MaHe
Tutor: LiuWenBo
School: Harbin Institute of Technology
Course: Materials Science
Keywords: Composites Hot and humid environment Interfacial properties Mechanical Properties
CLC: TB332
Type: Master's thesis
Year: 2011
Downloads: 28
Quote: 1
Read: Download Dissertation

Abstract


Carbon fiber reinforced resin matrix composites (CFRP) is the most common form of the new high-performance composite materials, however, makes the composite performance due to the role of environmental factors play a restricted, one of the most affected one of the environmental conditions of the hot and humid conditions. . Therefore, to carry out the important guarantee and the premise of the CFRP performance evolution in the hot and humid environment under the conditions of the study is to promote the reasonable and effective application. This paper laminated molding process way slabs of CCF300/Hby8485 composites were prepared using Fourier transform infrared spectroscopy and scanning electron microscopy studies of the composite microstructure and morphology of variation in the hot and humid environment, study its hygroscopic properties interfacial properties, static and dynamic mechanical properties were analyzed and summarized, and various performance factors and moisture absorption law. The results showed that the moisture CCF300/Hby8485 composite process can be divided into three stages, the first stage, moisture absorption rate, rely mainly on water concentration gradient penetrate; second stage, moisture major substrate moisture-based; third stage , moisture saturated; kinetic curves have the same trend in the hot and humid environment, resin casting and composite moisture, and CCF300/Hby8485 composite in an ambient temperature of 35 ° C, 55 ° C and 75 ℃ under the conditions of moisture as a physical absorbent; the domestic carbon fiber CCF300, Hby8485 epoxy between the wettability and interface good combination; flexural strength, compression strength, the interlaminar shear strength and the glass transition temperature with the absorbent time and soak temperature liters high and reduced. Especially the flexural strength and interlaminar shear strength was significantly decreased, but the composite material still has a high performance retention rate of 75 ° C distilled water remaining in the interlayer shear strength and bending strength were as follows: 64.41% and 65.28% Description such hygrothermal good. At the same time, improve the soaking temperature does not change the mechanism of the composite material moisture, but caused by the difference of performance variations, the infrared spectrum of the composite material in the hot and humid environment can also verify this conclusion; sectional morphology from the composite sample Observe that soak the higher the temperature, the longer hygroscopic, morphology changes and the interfacial debonding destruction more serious, this analysis is consistent with the macroscopic mechanical properties of the composites; and soak temperature rise, energy storage composite modulus is gradually reduced.

Related Dissertations

  1. Study on Characteristics of Contiuous Fiber-Reinforced Metal Matrix Composites under Hypervelocity Projectile Impact,TB332
  2. Preparation and Tribological Properties of TZ3Y20A-SrSO4 Ceramic Matrix Composites,TB332
  3. Reactive Hot-Pressing and Mechanical Properties of （ZrB2-ZrO2）/BN Composites,TB332
  4. Research on Welding Characteristics of CO2 Laser-GMA Hybrid Welding for Ultra-Low Carbon Bainitic Steel,TG456.7
  5. Microstructure and Mechanical Properties of Mg-Zn-Y-Zr Alloys,TG146.22
  6. Study on the Recycling of Post-Consumer Polyester Textiles,X791
  7. Fabricationand Properties of SiC-AlN Multiphase Ceramics Prepared by Gelcasting,TQ174.62
  8. Synthesis of Polysulfones and Modification for Epoxy Adhesives,TQ433.437
  9. Hot and humid environment simulated physical training to improve soldiers marching and weight 5km off-road capability of the armed,E251.1
  10. Schiff base Synthesis, Characterization and Antibacterial Properties,O641.4
  11. Closed thin-walled beams composite modal damping prediction,TB33
  12. Carbon fiber reinforced epoxy resin surface treatment and interfacial properties of composite materials,TB332
  13. Structure and Characterization of Room Temperature Self-crosslinked Acrylonitrile-butadiene-styrene,TQ325.2
  14. The Research on Extrusion Parameters Through the Plate Billet of Magnesium Alloy,TG379
  15. Modification of Talc Powder and Its Reinforcing and Toughening on Recycled Polypropylene,TQ325.14
  16. Effect of Adding ZrO 2 Nanopowder on Microstructure and Mechanical Properties of Carbon Steel,TB383.1
  17. Preparation of Surface-functionalized Graphene and Its Influence on the Mechanical Properties of Nanocomposite Materials,TB332
  18. Synthesis and Visible Light-Driven Photocatalytic Performances of Silver Halide/Conducting Polymer Nanocomposites,TB383.1
  19. Preperation of Low Friction and Wear Resistant High-Purity Alumina Ceramic,TQ174.1
  20. Reaction Sintering Preparation of Titaniferous Compound Ceramic Composites by Two-step Method,TQ174.1
  21. The Study of Forming Process and Properties of PTT/PET Skin-Core Composite Monofilament with Large Diameter,TQ340.64

CLC: > Industrial Technology > General industrial technology > Materials science and engineering > Composite materials > Non-metallic composite materials
© 2012 www.DissertationTopic.Net  Mobile