TY  - GEN
AU  - Sanaa Ahmed Mahmoud Gab Allah
AU  - Gamal Abdelfattah , 
AU  - Mohamed Mounir Saad Eldin , 
AU  - Yehia Abdelhamid Badr , 
TI  - Effect of laser on the electrical and optical properties of Polycarbonate / 
PY  - 2006///
CY  - Cairo : 
PB  - Sanaa Ahmed Mahmoud Gab Allah , 
KW  - ac current
KW  - BaTiO3
KW  - Carbon black
KW  - Conductivity dc current
KW  - electrical properties
KW  - mechanical properties
KW  - negative temperature coefficient of conductivity NTCC
KW  - PTCC
KW  - SBR
N1  - Thesis (PH.D.) - Cairo University - Faculty Of Science - Department Of Physics; Issued also as CD
N2  - Conductive rubbers are becoming an increasingly important class of material for a variety of applications in the electronic and electrical industriesThe presence of conductive fillers HAF and BaTiO3 not only give rise to high electrical conductivities but also modifies the mechanical properties of SBR vulcanizedThe behavior of the electrical conductivity with temperature in SBR / BaTiO3 showing a negative temperature coefficient of conductivity (NTCC) , meanwhile same SBR / HAF composites show a positive temperature coefficient of conductivity PTCC) the percolative volume fraction of (HAF) filler was calculated by using a modified theoretical models
ER  -