Improving the impact strength of compounds is the role of an important group of additives. Impact modifiers compensate for inherent brittleness, or embrittlement occurring at sub-zero temperatures, notch-sensitivity and crack propagation. The mechanism normally involves introducing a component that is elastomeric or rubbery in nature, which can absorb the energy of an impact or dissipate it.
Impact modifiers are supplements added to the compounded material that provide performance features. Impact modifiers provide the product enough strength during impact to resist breaking; yet, also enough rigidity to prevent the product from warping or sagging under normal use and conditions.
The Automotive, Electrical, Electronic, Business Equipment and Building & Construction markets demand exceptional physical properties and lower costs from Engineering Plastic compounds such as:
• PC Blends (PC-ABS, PC-Polyesters)
In the recycling trade, where brutal economic pressures never let up, it’s easy to think of additives as an unnecessary compounding cost. So, even those ingredients considered vital in virgin resin formulations can seem like expensive frills on the second pass through the pelletizing line. Yet today’s recycling markets demand reprocessed resins that meet the same quality standards as their virgin counterparts. Additives may be the best way to keep old resins acting and looking like new.