Influence of granular strontium chloride as additives on some electrical and mechanical properties for pure polyvinyl alcohol

Bulletin of materials science

M Hafez¹  A B Elaydy¹ 

[1] Physics Department, Faculty of Science, Suez Canal University, Ismailia, Egypt$$Physics Department, Faculty of Science, Suez Canal University, Ismailia, EgyptPhysics Department, Faculty of Science, Suez Canal University, Ismailia, Egypt$$

关键词: Polyvinyl-alcohol (PVA);    granular strontium chloride;    SrCl2;    a.c. electrical conductivity;    dielectric constant;    dielectric loss;    Young’s modulus;    creep relaxation curve.;   

DOI  :  

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

A matrix composed of polyvinyl-alcohol (PVA) mixed with different concentration ratios of the granular strontium chloride (SrCl₂.6H₂O) were prepared by casting technique method at room temperature (about 30°C). The electric and dielectric properties such as a.c. electrical conductivity by a conventional method, using Keithly 616 digital electrometer, dielectric constant, and dielectric loss were measured. Calculated equilibrium properties such as lattice constant, bulk modulus and elastic constants are in good agreement with experimental results. The calculated activation energy values agree well with experiment only when the SrCO₂ molecules are allowed to displace under strain, indicating the importance of inner strain relaxation. From the elastic constants, theoretical values of the Young’s modulus, shear modulus, Poisson’s ratio, of SrCl₂ are obtained. In addition mechanical properties such as Young’s modulus, creep relaxation, and energy stored properties for these samples were also determined at room temperature.

【 授权许可】

Unknown