A sealant composition according to an embodiment includes, per 100 parts by mass of a solid rubber component containing a diene rubber, 95 to 150 parts by mass of a hydrocarbon resin, 20 to 100 parts by mass of a liquid plasticizer, and 0.05 to 1.5 parts by mass of sulfur. A crosslinked product of the sealant composition has a dynamic storage shear modulus G of 10 to 50 kPa as measured under the conditions of a temperature of 40 C., a frequency of 1.0 Hz, and a strain of 25%.

In one aspect, waxy build material inks are described herein which, in some embodiments, exhibit desirable print quality and associated mechanical properties for three-dimensional printing applications. A build material ink, in some embodiments, comprises 20-40 wt. % rosin component, 5-35 wt. % non-polar wax component, and 40-65 wt. % alcohol wax component comprising one or more waxes of the formula (C.sub.nH.sub.2n+1)OH wherein n is an integer from 15 to 40. In another aspect, a build material ink comprises a eutectic mixture including rosin component, a non-polar wax component, and an alcohol wax component comprising one or more waxes of the formula (C.sub.nH.sub.2n+1)OH wherein n is an integer from 15 to 40.

Disclosed herein are systems and methods for creating and repurposing a container. The system can include a mold comprising a core, a cover and a ring. The cover can comprise a raised surface at a first end and a hole at a second end. The ring can have an annular shape defining an opening and can be configured to surround the core. The ring can further comprise a groove configured to receive the raised surface. The method for creating the container can comprise assembling a mold, heating a mixture comprising at least candle wax to form the material, inserting the material into the mold, waiting for the material to cure, decoupling the cover from the mold and removing the container from the mold. The method for repurposing the container can comprise melting the container into a liquid, transferring the liquid into a vessel and waiting for the liquid to cure.

A layered polymer composite includes at least one composite layer that includes a plurality of inorganic and/or ceramic particles dispersed in a polymer matrix, wherein the inorganic and/or ceramic particles are prewetted with a wax, plasticizer, or surfactant before mixing and/or processing into the layered polymer composite.

A method includes manufacturing a kernel that comprises a quantity of a phase-change material and heating the thermoplastic past a softening temperature thereof. This softening temperature is greater than the phase-change material's melting temperature. The method continues with pressing this heated thermoplastic onto a contact surface of the kernel and the thermoplastic to cool to below its softening temperature. As a result, the thermoplastic assumes a profile that depends, at least in part, on the contact surface's profile. The method continues with separating the kernel from the thermoplastic.