Vamac® HVG is an unfilled gum ethylene/acrylic elastomer similar to Vamac® G, but offering higher compound viscosity. The higher viscosity of compounds made with Vamac® HVG results in improved green strength and related processing advantages, such as:- Improved collapse resistance of extrudates
- Enhanced preform dimensional stability
- Improved moldability through elimination of trapped air
Compounds of Vamac® HVG are often selected for applications such as compression molded goods, highly plasticized compounds, and extruded tubing and hose. Vamac® HVG contains a small amount of processing aid. Vamac® HVG is a Vamac® G type polymer with a Mooney Viscosity of 26 compared to 16 for Vamac® G. The two polymers have similar compositions but the Vamac® HVG has a higher molecular weight. They have many common features, including: - Good heat resistance in air
- Good oil and fluid resistance
- Good low temperature properties
- Compounded with similar ingredients
- Cured with same cure package
The big advantage of Vamac® HVG over Vamac® G is that the compounds made from the Vamac® HVG have a higher viscosity. The viscosity of the Vamac® HVG compound can be double that of a Vamac® G compound. This can lead to better processing. Specifically, the potential for a collapsed hose is reduced for an extrusion process and the potential for trapped air in an injection molded compound is reduced. Form: Bale size is nominally: 560 mm x 370 mm by 165 mm Information provided by DuPont. This product line has been acquired from DuPont by Celanese. This specific page is outdated and not maintained. If the product is active, it can be found under its current Celanese listing. |
