مرجـع دانـش پارس

نوع فایل:PDF

تعداد صفحات :11

سال انتشار : 1395

چکیده

Polyamide 66 (PA66) in engineering plastics are used. However, its poor strength, has limitedapplications. Thus, the strength of the PA66 highly regarded in the field has been modified.Generally, the strength of a plastic and elastomer matrix is reduced stiffness and heat resistanceFind a convenient way for the strength of PA66 without reducing stiffness and heat resistance ofpolymers is a key target for researchers in the fields. In this study, calcium carbonate nanoparticleshave been used for the strength of PA66 through the molten mixture. Isothermal crystallizationkinetics of nanoparticle effect on Differential scanning calorimetry technique was studied forPolyamide 66. The results showed that by adding a small amount of nanoparticles , PA66crystallization rate can be increased, crystallization temperature increases and crystal sizedistribution during crystal growth is limited. Changes in the nuclear energy based on the resultingcrystal Avrami equation was Hoffmans theory. With the development spherolite radial surface freeenergy of the crystals decreases with increasing amounts ofnanoparticles. The results showed that ,crystal structure and crystallization kinetics Composite PA66 / Nano carbonate calcium , used nanoparticles, was not nucleation agent for PA66.

واژگان کلیدی

nylon, nuclear, crystallization