معالجة التأثيرات السلبية للكاؤولين على خصائص نظام الإنضاج للمطاط الطبيعي

Abstract EN

In the current research (which is done in the laboratories of Babylon Tires Factory), Studying the effect of kaolin upon the characteristics of curing system of natural rubber has been carried out by using Oscillating Disk Rehometer according to the ASTM D-2084 specification.

Results indicate that the addition of cheap material (Kaolin) lowers the viscosity and therefore aids processing, but at the same time slowers the curing rate and increases the scorch time.

This research tries to find an appropriate solution to these negative effects trough three modes: increasing the amount of the original accelerator, adding a new additional accelerator (ZDEC), and adding a new additional activator (TEA).

In the first mode, results of this research coincide approximately with the result of Vanderbilt Company (United State); that is, the addition of an extra amount of the original accelerator retain back cure system to its initial activity without kaolin , while the addition of 0.4 pphr ZDEC or 0.6 pphr TEA gives the same effect