Impact modifiers are added to plastic compounded materials to improve the durability and toughness of a variety of plastic resins. The amount of impact modifier added depends upon the level of impact resistance needed for end-use applications. Explore what are impact modifiers, the different types of impact modification, and how impact modifiers improve the properties of several engineering plastics while retaining the cost/performance balance.
Application:
General-purpose impact modification is a very low level of impact modification which is, for instance, applied to avoid conditioning of molded PA parts.
It translates to reasonable room temperature impact strength but does not take into account any requirements for low-temperature (below 0°C) impact strength.
For most of this type of applications only low levels of impact modifier will be required (<10%) and the impact modifier does not necessarily have to contain reactive groups to be acceptable for the application.