Dissertation > Excellent graduate degree dissertation topics show

The Property of Modified Cyanate for High Frequency Printed Circuit Board

Author: LiangLei
Tutor: YuRuoBing；JiaoYangSheng
School: East China University of Science and Technology
Course: Materials Science and Engineering
Keywords: cyanate ester resins PCB diphenyl ether dielectric properties water resistance
CLC: TQ320.7
Type: Master's thesis
Year: 2012
Downloads: 44
Quote: 0
Read: Download Dissertation

Abstract


The matrix resin for high frequency printed circuit board(PCB), which is mixture of epoxy resin and diphenyl ether modified cyanate resin respectively, is prepared in this paper.The purpose of this paper is to improve the water resistance property,dielectric property and mechanical property of the matrix resin.The curing kinetics, curing reaction mechanisms, thermal properties, water resistance property, dielectric properties and mechanical property of DMBPCN/EP and BADCy/DPEPh are studied by all sorts of analytical methods(DSC,FTIR,TGA,DMA etc.). The effect of the content of CE of DMBPCN/EP and BADCy/DPEPh on property is researched. The main important research results are as follows:1、The curing kinetic of DMBPCN/EP is studied by DSC,the curing activation energy of DMBPCN/EP is 102.43KJ/mol, and the reaction order is 0.98. The starting curing temperature; the curing temperature and the post treatment temperature of DMBPCN/EP are 157℃; 170℃and 183℃respectively.2、The properties of curing product of DMBPCN/EP are researched. Results show that when the mass fraction of EP in the matrix is 10%, The DMBPCN/EP system shows the best comprehensive performance.The mechanical property is improved largely(the flexural strength increase from 70.6MPa on pure cured DMBPCN to 108.6MPa) and the water absorption is lowest(only 0.68%) while lowering the losses of the dielectric property and thermal property to the minimum.3、The curing reaction mechanism of BADCy/DPEPh which is researched by infrared spectrum is as follows:(1),the imine-carbonic ester structure are prepared by the reaction of functional group of cyanate (-OCN) and phenol ichydroxyl of DPEPh.(2), the triazine ring structure are prepared by the reaction of the imine-carbonic ester structure and functional group of cyanate(-OCN). The triazine ring structure is the majority in BADCy/DPEPh system when add less DPEPh;while the Imine-carbonic ester structure is the majority when add more DPEPh. 4、The properties of curing product of BADCy/DPEPh are researched, results show that the water resistance property and dielectric properties of curing product decreased firstly, then increased with the iccrease of DPEPh. When the mass fraction of DPEPh in the matrix is 30%, The curing product of DMBPCN/EP system shows the best water resistance property and dielectric properties (the water absorption isl.15%; the dielectric coefficient and dielectric loss is 2.9 and 6.1x10-3).

Related Dissertations

  1. The Research on Action Mechanism of Additive Used in Through-Hole Copper Plating and Its Selection,TQ153.14
  2. Research on PSA/Cotton Blend Fabric of Coatinging of Water Resistance and Moisture Permeability,TS195.6
  3. Design and Implementation of FPGA Teaching Experimental Board Based on EP2C8,TP391.6
  4. Modification of Thermosetting Resins by High Performance Liquid Crystalline Epoxy Resin,TQ323.5
  5. Study of High Dielectric Constant Composites Based on Cyanate Ester Resin,TB332
  6. Machine Vision’s Research and Application in the SMM of SMT,TP391.41
  7. Study on the Preparation of the Oxyfluoride Glass-ceramics/Silicon Dioxide System for LTCC and Tape Casting,TQ174.6
  8. Effect of Hydrophobic Modification of the Flame Retardant on the Properties of the Water-borne Intumescent Fire Retardant Coatings,TQ637
  9. The Intelligent Routing Based on the Algorithm of Lie Group Machine Learning, LML,TN710
  10. Preparation and properties of silicone modified waterborne polyurethane coating agent,TS195.2
  11. Hardware Research and Design of the IP Camera Terminal Based on Cadence,TN948.41
  12. Random Vibration Reliability Analysis and Research on Solder Joint of PBGA Board Level Assembly,TN405
  13. Study on Copolymer Modification of Bisphenol A Dicyanate Ester Resin and Novel Cyanate Ester Resins with Low Dielectric and Water Absorption Performance,TQ320.1
  14. Influence of Pretreatment Process for Phosphogypsum on Water Resistance of Phosphogypsum Composite Cement,TQ172.1
  15. Research on the Em Modeling and Optimization of PCB Through Hole Via,TN41
  16. Microwave Dielectric Resonator Ceramics of High-Q Value for the 3G Mobile Communication Base Stations,TQ174.756
  17. Processing and Property Study of Mg2TiO4 -based Microwave Dielectric Ceramics,TN04
  18. Design of Sin/Cos to the RS422 Signal Converter,TN911.7
  19. Surface-Fluorinated Polyvinyl Alcohol Functional Membranes: Preparation, Morphology and Surface Property,TB383.2
  20. Research on Algorithm of PCB Defect Detection Based on Image Analysis,TN41
  21. Microwave Dielectric Properties of Zinc Borate Glass-based Low-temperature Sintered Ceramics,TQ174.1

CLC: > Industrial Technology > Chemical Industry > Synthetic resins and plastics industry > General issues > Products and testing
© 2012 www.DissertationTopic.Net  Mobile