摘要:
A thermally conductive plastic composition and a system and method for forming such compositions. The thermally conductive composition comprises a polymer material and a thermally conductive filler, such as boron nitride, and exhibits good in-plane thermal conductivity, through-plane conductivity, or both. The system for forming thermally conductive plastic compositions comprises an extruder and an extruder screw comprising fractional mixing elements. The extruder can also comprise a screw with shovel elements located in a region of the system for introducing a thermally conductive filler into the extruder. The system and method allow for the processing of thermally conductive plastic compositions comprising boron nitride and can allow for the processing of boron nitride agglomerates such that the agglomerates remain sufficiently in tact to provide a composition exhibiting both excellent in-plane and through-plane conductivity.
摘要:
A composition comprising exfoliated boron nitride crystals dispersed in a resin matrix and a method of forming such compositions comprises the in situ exfoliation of boron nitride crystals by compounding boron nitride crystals in a resin material with a hard filler material having a hardness greater than the hardness of the boron nitride crystals.
摘要:
A thermally conductive filler composition and a resin composition comprising such filler compositions. The filler composition comprises a blend of a boron nitride, a graphite, or a combination thereof, a talc, and optionally a silane. The filler composition can further comprise other filler components including, for example, wollastonite, calcium carbonate, or a combination thereof. The filler compositions can be added to a resin composition to provide a thermally conductive resin such as, for example, a thermally conductive plastic.
摘要:
A thermally conductive filler composition and a resin composition comprising such filler compositions. The filler composition comprises a blend of a boron nitride, a graphite, or a combination thereof, a talc, and optionally a silane. The filler composition can further comprise other filler components including, for example, wollastonite, calcium carbonate, or a combination thereof. The filler compositions can be added to a resin composition to provide a thermally conductive resin such as, for example, a thermally conductive plastic.
摘要:
A thermally conductive filler composition and a resin composition comprising such filler compositions. The filler composition comprises a blend of a boron nitride, a graphite, or a combination thereof, a talc, and optionally a silane. The filler composition can further comprise other filler components including, for example, wollastonite, calcium carbonate, or a combination thereof. The filler compositions can be added to a resin composition to provide a thermally conductive resin such as, for example, a thermally conductive plastic.
摘要:
A process for producing boron nitride of high purity and high thermal conductivity, wherein a oxygen-containing boron compound is reacted with a nitrogen-containing source in the presence of a dopant at a temperature of at least 1000° C. for at least one hour, and wherein the dopant forms metal borate impurities with a vaporizing temperature that is lower than the highest processing temperature in the process.
摘要:
A process for producing boron nitride of high purity and high thermal conductivity, wherein a oxygen-containing boron compound is reacted with a nitrogen-containing source in the presence of a dopant at a temperature of at least 1000° C. for at least one hour, and wherein the dopant forms metal borate impurities with a vaporizing temperature that is lower than the highest processing temperature in the process.
摘要:
In one aspect, a self-lubricating component is provided for a pharmaceutical packaging assembly. The self-lubricating component comprises a polymer composition and an effective amount of a lubricating additive such as, for example, boron nitride. In another aspect, a pharmaceutical packaging assembly may be provided having a surface thereof coated with a lubricating composition comprising boron nitride. The pharmaceutical packaging composition may be, for example, a pre-filled syringe comprising a body (barrel) and a plunger assembly.
摘要:
A thermally conductive polymer composition comprising (1) a polymer material, and (2) a thermally conductive filler. The thermally conductive filler can be boron nitride. The thermally conductive polymer composition can be used in a molding operation to form a molded article and can reduce the molding cycle time of a molding process. In one embodiment, increasing the thermal conductivity of a polymer material (as compared to the thermal conductivity of the material in the absence of a thermally conductive filler) increases the thermal diffusivity and reduces the cooling time of the article. The present invention also provides methods of forming molded articles from such compositions.
摘要:
In one aspect, a self-lubricating component is provided for a pharmaceutical packaging assembly. The self-lubricating component comprises a polymer composition and an effective amount of a lubricating additive such as, for example, boron nitride. In another aspect, a pharmaceutical packaging assembly may be provided having a surface thereof coated with a lubricating composition comprising boron nitride. The pharmaceutical packaging composition may be, for example, a pre-filled syringe comprising a body (barrel) and a plunger assembly.