Dielectric Properties of AlN/Polymer Composites for Electronic Substrate Application

2007 ◽  
Vol 334-335 ◽  
pp. 1053-1056 ◽  
Author(s):  
Jie Zhang ◽  
Hui Qing Fan ◽  
Sha Ming Ke ◽  
Yun Ze Shi ◽  
Xian Hua Zeng ◽  
...  
Keyword(s):  
Dielectric Properties ◽  
Epoxy Resin ◽  
Polymer Matrix ◽  
Polymer Matrix Composites ◽  
Cole Plot ◽  
Matrix Composites ◽  
Low Dielectric ◽  
The Matrix ◽  
Varied Form ◽  
Electronic Substrates

The fabrication processing, dielectric properties and thermal properties of polymer-matrix composites containing AlN particles (10μm) for electronic substrates and microelectronic packaging applications were investigated. The epoxy resin (E-51) is used as the matrix, and the dispersion of the AlN in the composites is varied form 0 vol% to 40 vol%. The microstructures of the polymer-matrix composites are observed through scanning electron microscopy (SEM). With increasing the AlN content, thermal conducting of composites is improved, while the composites still keep the relatively low dielectric constant and dielectric loss. According to the dielectric properties dependence on frequencies (1kHz-10MHz) of the composites, the Cole-Cole plot is analyzed. The dipole relaxation in the composite is induced, and it is suggested that the air layer exit between the epoxy resin and the AlN particles.

A Study on Characteristic of Polymer Matrix Composites Using Experimental and Statistical Approach

2013 ◽  
Vol 368-370 ◽  
pp. 683-686
Author(s):  
Ahmad Mubarak Tajul Arifin ◽  
Shahrum Abdullah ◽  
Rozli Zulkifli ◽  
Dzuraidah Abd Wahab
Keyword(s):  
Polymer Matrix ◽  
Statistical Approach ◽  
Polymer Matrix Composites ◽  
Stacking Sequence ◽  
Matrix Composites ◽  
The Matrix ◽  
Thermoset Epoxy ◽  
Chopped Strand Mat ◽  
Materials Used ◽  
And Behavior

This paper focuses on the characteristic study of polymer matrix composites using a statistical approach, in terms of difference experimental and reflected to difference stacking sequence and orientation of composite lamination. Composite material, have an excellent characteristic and behavior, but with a difference application and materials used, it have a difference phenomenon occurred before the composite structure are collapsed. Therefore, in order to understand the characteristic of polymer matrix composites, it needs to investigate the phenomenon that influences the structure of composite lamination before failures. In this research, polymer matrix composites are produced using difference material and stacking sequence of lamination. The matrix used is thermoset epoxy and polyester resin with chopped strand mat (CSM) and woven roving (WR) as reinforcement materials. It has been produced using hand lay-up technique. The experimental work is carried out using the tension and flexural test accordance to ASTM-D3039 and D-D790 standard. By using a statistical approach, it can clearly show the differential between materials used with a characteristic of composite materials. It is noted, based on this investigation it also showed difference phenomenon failures and damage structure of polymer matrix composites with difference type of experimental.

Preparation and Mechanical Characterization of a Polymer-Matrix Composite Reinforced with PET

2010 ◽  
Vol 1276 ◽  
Author(s):  
J. Elena Salazar–Nieto ◽  
Alejandro Altamirano–Torres ◽  
Francisco Sandoval–Pérez ◽  
Enrique Rocha–Rangel
Keyword(s):  
Epoxy Resin ◽  
Polymer Matrix ◽  
Polymer Matrix Composites ◽  
Mechanical Tests ◽  
Polymeric Matrix ◽  
High Porosity ◽  
Matrix Composites ◽  
Curing Time ◽  
Flexure Strength

AbstractIn this study, polymer-matrix composites are fabricated by mixing liquid epoxy resin with 0, 15, 20 and 25 wt % of PET. PET is used as a reinforcement material since it can be recycled and this implies a beneficial environmental impact. After mixing, specimens are dried at room temperature during 24 h and then cured at 150°C during 0.5, 0.75 and 1 h. Then mechanical tests are performed. Experimental results obtained from the flexion test for 100 % epoxy resin and 15 % PET samples, without curing treatment show values of 30 and 21 MPa, respectively. Flexure strength values for the same samples but after curing treatment are: 56, 90, 32 MPa and 69, 64, 70 MPa, for 0.5, 0.75 and 1 h of treatment, respectively. These data show an important increase in the flexure strength for the sample reinforced with 15 % PET and curing time of 1h. This is most likely due to the behavior of PET's powders at this temperature and time. They can partially melt improving the adhesion to the polymeric matrix. For a curing time of 0.75h, this property decreases, due to the high porosity developed in the composite and the poor adhesion between polymeric matrix and reinforced material.

The Effect of Filler Content on the Mechanical Properties of Polymer Composite

2016 ◽  
Vol 858 ◽  
pp. 190-195
Author(s):  
Lenka Markovičová ◽  
Viera Zatkalíková
Keyword(s):  
Composite Material ◽  
Polymer Matrix ◽  
Filler Content ◽  
Polymer Matrix Composites ◽  
Ceramic Matrix Composites ◽  
Hardness Test ◽  
Carbon Matrix ◽  
Organic Matrix ◽  
Matrix Composites ◽  
The Matrix

A composite material is a macroscopic combination of two or more distinct materials, having a recognizable interface between them. Modern composite materials are usually optimized to achieve a particular balance of properties for a given range of applications. Composites are commonly classified at two distinct levels. The first level of classification is usually made with respect to the matrix constituent. The major composite classes include organic – matrix composites (OMC's), metal – matrix composites (MMC's), and ceramic – matrix composites (CMC's). The OMC's is generally assumed to include two classes of composites: polymer – matrix composites (PMC's) and carbon – matrix composites [1]. The composite material used in the work belongs to the PMC's and the composite is formed by the polymer matrix - high density polyethylene. As filler was used hard-magnetic strontium ferrite. Composite samples were prepared with different filler content (0%, 60%, 70%, 80%). Testing of polymer composites included: tensile test, elongation at break, impact test, hardness test.

scholarly journals UV Sensor Based on Fiber Bragg Grating Covered with Graphene Oxide Embedded in Composite Materials

Sensors ◽  
2020 ◽  
Vol 20 (19) ◽  
pp. 5468
Author(s):  
Piotr Lesiak ◽  
Karolina Bednarska ◽  
Krzysztof Małkowski ◽  
Łukasz Kozłowski ◽  
Anna Wróblewska ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Epoxy Resin ◽  
Fiber Bragg Grating ◽  
Uv Radiation ◽  
Polymer Matrix ◽  
Polymer Matrix Composites ◽  
Glass Fibers ◽  
Fiber Optic Sensor ◽  
Bragg Grating ◽  
Matrix Composites

Polymer–matrix composites degrade under the influence of UV radiation in the range of the 290–400 nm band. The degradation of polymer–matrix composites exposed to UV radiation is characterized by extensive aging of the epoxy matrix, resulting in deterioration of their mechanical properties. Glass fibers/epoxy resin composites were made by an out-of-autoclave method whereas a fiber optic sensor was placed between different layers of laminates. In our work, we used a fiber Bragg grating sensor covered with graphene oxide and embedded in a polymer matrix composite to monitor UV radiation intensity. Measurements of UV radiation may allow monitoring the aging process of individual components of the polymer composite. In order to estimate the number of microcracks of epoxy resin, microstructure observations were carried out using a scanning electron microscope.

Measurement of dielectric properties of polymer matrix composites developed from cow bone powder

2016 ◽  
Vol 88 (1-4) ◽  
pp. 325-335 ◽  
Author(s):  
A. D. Omah ◽  
B. A. Okorie ◽  
E. C. Omah ◽  
I. C. Ezema ◽  
V. S. Aigbodion ◽  
...  
Keyword(s):  
Dielectric Properties ◽  
Polymer Matrix ◽  
Polymer Matrix Composites ◽  
Matrix Composites ◽  
Bone Powder ◽  
Cow Bone

Computational Analysis of Self-Healing in a Polymer Matrix With Microvascular Networks

2008 ◽  
Author(s):  
Jose Martinez Lucci ◽  
R. S. Amano ◽  
Pradeep Rohatgi
Keyword(s):  
Polymer Matrix ◽  
Mechanical Performance ◽  
Polymer Matrix Composites ◽  
Self Healing ◽  
Matrix Composites ◽  
Microvascular Networks ◽  
Microvascular Network ◽  
Matrix Surface ◽  
The Matrix ◽  
Healing Agent

For the last decade, many researchers have been working to develop self-healing materials, and have obtained good results in the field of polymers, these components with microencapsulated healing agent have exhibited noticeable mechanical performance and regenerative property The research described in this paper applies the concept of self healing to simulate self healing polymer matrix composites, with the aid of models developed by the authors for the manufacturing processes and self-healing behavior. The development of self-healing is a novel idea that has not been totally explored in great detail yet. The concept of self-healing described in this paper consists of simulation of a healing agent dicyclopentadiene (DCPD) inside of a microvascular network within a polymer matrix coating with catalyst forming a self-healing composite (SHC). When this SHC is damaged or cracked, the healing agent by capillary action will flow inside of the microvascular network; when the liquid enter in contact with the catalyst will form a polymer structure and sealing the crack. The study consists of theoretical analysis and Computational Fluid Dynamics of a self-healing polymer. The objective of the study reported here was to find the influence and efficiency of the microvascular network in healing a polymer matrix. To check this effect a computational model was created to simulate the healing treatment, thus a crack was created on the matrix surface piercing the microvascular network filled with healing agent and the method to simulate healing behavior of the composite allows assessment of the effects of the autonomously repairing repeated damage events.

Sign in / Sign up

Export Citation Format

Share Document