Dissertation > Excellent graduate degree dissertation topics show

Corrosion Resistance of GF/VE Composites in Distilled Water and Sulfuric Acid Solution

Author: LiLinJie
Tutor: YuYunHua
School: Beijing University of Chemical Technology
Course: Materials Science and Engineering
Keywords: Vinyl ester resin GF/VE composite distilled water sulfuric acid interface adhesion life prediction
CLC: TB332
Type: Master's thesis
Year: 2010
Downloads: 56
Quote: 2
Read: Download Dissertation

Abstract


Glass fiber reinforced vinylester composites (GF/VE) have been used as shell materials for chemical containers due to superior mechanical properties and good corrosion resistance. However, in practical applications, these composites may take degradation in mechanical properties owing to the corrosion of the matrix, glass fiber and interface of the composites by the synergy of complicated environmental factors (humidity, temperature, medium, et al), resulting in the deterioration in service performance and long-term durability. Therefore, it is necessary to study the corrosion behavior of the GF/VE composites by simulating actual service environment for the purpose to select suitable shell materials for chemical containers.In this study, the moisture absorption, static and dynamic mechanical properties of two kinds of glass fiber reinforced vinylester resin composites (GF/VEA and GF/VEB) and their resin casts (VEA and VEB) in 55℃,40wt% sulfuric acid solution were comparatively studied. The microstructure and componential change were also studied using SEM and FTIR analysis. The results show that the GF/VEB composite presents a better interfacial adhesion and thus shows higher corrosion resistance than the GF/VEB composite. So the GF/VEB composite is chosen as a more suitable shell material for anticorrosive containers, and has been taken further studies in this study.In order to further investigate the corrosion mechanisms of the GF/VEB composite in sulfuric acid solution, we further comparatively investigated the corrosion behavior of the GF/VEB composite and VEB casts in distilled water and sulfuric acid solution. The results show that the flexural strength of GF/VEB composite in distilled water decline slightly and the flexural modulus is almost unchanged due to the plasticization resulting from moisture absorption and the slight interfacial de-bonding. While in sulfuric acid solution, both the flexural strength and the modulus of the GF/VE composite decrease clearly because of the more severe damages on the interface adhesion, which result from the brittleness and cracking of matrix, the cracking and/or breakage of glass fibers as well as the plasticization of the matrix.The materials strength prediction model for polymer composite laminates was applied in this paper. The good consistency between the predicted and experimental values indicates that the model can be applied to predicate the residual strength and service lifetime of the GF/VE composite. The results show that the GF/VE composite in sulfuric acid solution presents almost 16 times shorter life time than in distilled water when the 50%of flexural strength retention is considered as the failure point.

Related Dissertations

  1. Studies on Changes of Quality Characters and Prediction Model of Postharvest Tomato Fruit,S641.2
  2. Human glioblastoma resveratrol metabolites and metabolizing enzymes expression analysis,R739.4
  3. Alkylation of Isobutane with Butene Using Sulfuric Acid as Catalyst,O643.32
  4. Study on Reinforced Acid Leaching of Ferric Iron in Pyrite Cinder,X756
  5. Strain hardening austenitic stainless steel 022Cr17Ni12Mo2 low cycle fatigue properties of,TG115.57
  6. Research on Methods and Applications of Accelerated Degradation Testing for Multiple Degradation System,TB114.3
  7. Life Prediction of Satellite Key Components Based on RVM-PF,V423.42
  8. Pyrite residue desulfurization and arsenic,X705
  9. Study on the Specifics Spoilage Organisms in Tofu and Shelf Life Predictive Model,TS214.2
  10. Research on Microwave Assisted Sulphuric Acid Leaching of Nickel and Cobalt from Low Grade Laterite Ore,TF815
  11. Modification of high titanium slag leaching of acid hydrolysis,TF823
  12. Corrosion Mechanism and Preventive Measurements of Sulfuric Acid Making Plant,TG172.6
  13. Torsion Fatigue and Multiaxial Ratcheting Fatigue of Lead-free Solder,TG425
  14. An Investigation on Dephosphorization of High Phosphorous Iron Ore by Biomass Reduation Roasting and Magnetization of Pyrite Cinder,TD951
  15. Comprehensive Hydrolysis and Bioethanol Conversion of Seaweed Industrial Wastes,TQ914.2
  16. The Experiment Research on Anti-Corrosion by Sulfuric Acid of Concrete and Cement Mortar,TU528
  17. Preparation of Temperature-responsive Monolith Column and the Study of Its Chromatographic Performance,O657.7
  18. Sulfuric acid transferase enzyme in estrogen breast enlargement breast tissue and its significance,R655.8
  19. Study on Process Optimization and Industrialization of Urea Sulfuric Acid Compound Fertilizer,TQ444
  20. Research on FRP-Epoxy Gravel Bridge Deck Pavement Structure,U443.33
  21. Based on Expert Control and Heat Pump Technology Low Energy Consumption Multi-effect Distilled Water Machine’s Research,TP273.5

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