The Universal Selection Source: Polymer Additives

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Selection Guide

Techno Brief: Impact Modifiers for Engineering Plastics

Impact Modifiers or toughners (elastomer or a plastic of different type) are added to a plastic compounds to improve the impact resistance of the finished product. This Impact Modifiers guide is designed to help you understand how to improve the impact strength of engineering plastics used in demanding applications while retaining the cost/performance balance.

Polycarbonate and Recycled Polycarbonate

Impact and processing modifiers for Polycarbonate
Polycarbonate (PC) is known for its transparency, its excellent resistance to impact and its ability to withstand high temperatures during the lifespan of the final article.

However, PC's low chemical resistance (gasoline) is an issue for automotive applications. The injection molding of high viscosity grades is another limitation, especially when high impact resistance is required.


Moreover inherent performances of PC, such as impact, are also seriously compromised when colored pigments, fillers or flame retardant additives are used in the compound.

Recycled PC are a cost effective solution for compounders. However, the recycling steps reduce PC's mechanical performance, making the use of impact modifiers necessary in recycled PC, in order to reach the desired level of performance.

MBS Impact Modifiers Benefits in Polycarbonate

  

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