Abstract: Technologies are generally described for hybrid acoustic damping materials that may be used in noise, vibration, and harshness mitigation. In some examples, solvated acrylic, silicone, and/or urethane materials may be blended in selected proportions to form a hybrid acoustic damping material. Characteristics of the components of the hybrid acoustic damping material such as viscosity and proportions may be selected for a desired composite loss factor vs. temperature characteristic of the material. In some examples, a broad temperature range of damping or a targeted temperature region may be achieved based on the composition of the hybrid acoustic damping material. To achieve a uniform stable blend with a consistent viscosity, individual component materials may be selected with similar molecular weight/viscosity. Compatible solvents may be added during blending of the components.

Abstract: Technologies are generally described for hybrid acoustic damping materials that may be used in noise, vibration, and harshness mitigation. In some examples, solvated acrylic, silicone, and/or urethane materials may be blended in selected proportions to form a hybrid acoustic damping material. Characteristics of the components of the hybrid acoustic damping material such as viscosity and proportions may be selected for a desired composite loss factor vs. temperature characteristic of the material. In some examples, a broad temperature range of damping or a targeted temperature region may be achieved based on the composition of the hybrid acoustic damping material. To achieve a uniform stable blend with a consistent viscosity, individual component materials may be selected with similar molecular weight/viscosity. Compatible solvents may be added during blending of the components.

Abstract: An intumescent thermoplastic elastomer molding composition is disclosed that includes high density polyethylene with chlorinated polyethylene and/or silicone rubber; a heat stabilizer for the thermoplastic elastomer material and an intumescent and fire-resistant additive for the thermoplastic elastomer, whereby moldings prepared from such mixture have good physical properties over a substantial range of ambient temperatures and display a resistance to flame and heat as characterized by the Intumescence Efficiency test of this specification.

Abstract: A seat suspension membrane is provided which consists substantially of a biaxially oriented film of a polyurethane thermoplastic elastomer composition, which composition is characterized by substantially linear polymer molecules containing alternate rigid segments of diisocyanate short chain diol addition reaction products and flexible segments of relatively high molecular weight polyether diol or polyester diol segments and which is produced from a relatively soft film composition.