Expancel 091 DE 80 d30 Polymer shell encapsulating a gas Akzo Nobel-Expancel Extenders / Fillers Acrylics/ Acrylates Polyesters PU - Prepolymers SEALANT >> Putty EXPANCEL DE dry, expanded microspheres EXPANCEL ® microspheres are small spherical plastic particles. The microspheres consist of a polymer shell encapsulating a gas. The pre-expanded microspheres are used as light weight fillers in many application areas. In these applications the combination of the extremely low density, the rheological and the resilience properties of the microspheres pro-vide valuable characteristics to articles produced. Elasticity All EXPANCEL ® grades are highly resilient. The expanded microspheres are easy to compress. When the pressure is released the microspheres regain their original volume. Thanks to this resiliency the EXPANCEL ® microspheres can withstand several cycles of loading/unloading without breaking. This is very important when the microspheres are used in shock absorbent materials but also when pumping the microspheres, alone or in various mixtures. Chemical resistance EXPANCEL ® microspheres can be used in contact with many chemicals, including solvents without discoloration or negative effects on ex-pansion or other properties. EXPANCEL ® microspheres are used in a wide variety of commercial applications as a light weight filler. In polyester putties EXPANCEL ® microspheres are used as the only filler or in combination with other fillers. An addition of 1 percent by weight of microspheres reduces the density of the putty from about 1800 kg/m 3 to 1100 kg/m 3 . The ad-hesion between the polyester base material and the micro-spheres is excellent. The porosity of a putty containing microspheres is infinitely low resulting in no water penetra-tion of a surface filled up with such a putty. Expanded microspheres are also combined with polyurethanes in cast polymers, coatings and sealants to reduce the density, at the same time improving shock, vibration and sound absorption properties. Applicability EXPANCEL ® microspheres are added to putties, caulking and sealing compounds to lower their weight and hence save energy and work and make them easier to handle. In putties, caulking and sealing compounds etc the presence of EXPANCEL ® microspheres give the various formulations butter-like or creamy consistency, making them easy to apply. Putties and body fillers containing microspheres have excellent sanding properties. In polyurethane sealants the microspheres improve shock-, vibration- and sound absorption. The microspheres also improve the thermoinsulation of polyurethane sealants. The microspheres improve the recovery after elongation and compression of many materials, i e acrylic latex caulk and silicone rubbers. Low after-sinking and shrinkage is the result when microspheres are added to putties, thermoset materials, RIM, acrylic latex caulk, underbody coatings etc. Dry, expanded microsphere. Used as a light weight filler in polyester putties, polyurethane sealants and acrylic latex caulks. Offers high resiliency, easy compression, ability to withstand several cycles of loading/unloading without breaking, good chemical resistance and good thermo-mechanical properties. Provides low density, very good adhesion to polyester, very low porosity, reduction of weight, easy application, very good sanding properties and low after-sinking and shrinkage. Improves shock-, vibration- and sound absorption, thermoinsulation and recovery after elongation and compression.