Acrylic Impact Strength Modifiers
An acrylic impact modifier is an additive used in PVC formulations to:
- improve the mechanical properties of the finished product;
- increase impact strength and resistance to mechanical stresses;
- improve the elasticity, flexibility and ductility of the finished product;
- retain properties at low temperatures and reduce brittleness.
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Typical Structure of an Acrylic Impact Modifier
An acrylic impact modifier is a polymer with a core-shell structure.
Role of the PBA Core
- increasing impact strength.
Role of the PMMA Shell
- ensuring powder flowability for uniform material feeding;
- providing good compatibility with the PVC matrix and a high degree of dispersion;
- improving PVC fusion.
Elastomeric particles dissipate impact energy throughout a larger volume of material.
When a PVC product is subjected to an external impact, the elastomeric core absorbs the load across a larger area of the material, converting mechanical energy into heat. Acrylic impact modifiers can therefore substantially increase the impact strength of PVC products, even at low temperatures.
The butyl acrylates forming the core of Donglin’s Revamod acrylic impact modifiers have a uniquely low glass transition temperature. This provides the highest impact strength in finished profiles at low temperatures. Thanks to their carefully selected formulation, Revamod impact modifiers can be used at lower loadings than competing products to achieve the same properties in finished products.
A properly selected impact modifier provides the required strength properties and improves the surface and appearance of the finished product.
Revada Plastic offers a wide range of solutions to help select a product for specific applications.
Advantages of Revamod Acrylic Impact Modifiers
- a wide range of available grades;
- high and consistent product quality;
- an optimally formulated composition that provides:
- excellent impact strength across a wide temperature range;
- high melt strength and elongation at break;
- excellent powder flowability without caking;
- early fusion;
- excellent weather resistance;
- excellent weld-seam properties;
- high surface gloss.
- technical advice and support from the experienced Revada & Donglin team, with access to the manufacturer’s well-equipped laboratory when needed;
- consistent stock availability;
- secure packaging for transport;
- strong cost-effectiveness.
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