4results about How to "No fragmentation" patented technology

The invention relates to the technical field of high-thermal-conductivity and high-resilience graphene foam, in particular to a preparation method of elastic graphene foam, according to the scheme, by adding a hollow material, the porosity of an original material graphene oxide film is improved. Meanwhile, the graphene foam with multiple micropores and high porosity is obtained through clamp constraint and a high-temperature heat treatment process, so that organic macromolecules can permeate into the graphene foam to form a framework, and the graphene foam with high thermal conductivity and high resilience is obtained; and the overflow speed of thermal decomposition gas can be controlled by adopting a heat treatment process with a certain temperature rising speed at 60-300 DEG C, so that the membrane is controlled not to be broken in the expansion process. And performing high-temperature graphitization to obtain the graphene foam with smooth surface, high expansion rate and high heat-conducting property, so that the high-expansion graphene oxide film permeates into organic polymers through a vacuum permeation method to form a framework, thereby obtaining the high-heat-conducting and high-resilience graphene foam.

This invention discloses a silicone foam sheet and a battery module and battery pack containing the same, belonging to the technical field of silicone foam materials. The linear expansion coefficient α of the foam sheet's pore diameter satisfies 1≤α≤8, and the linear contraction coefficient β of the foam sheet's pore wall thickness satisfies 4≤β≤9. This invention enables the silicone foam sheet to have more spatial gaps and a lower thermal conductivity under room temperature conditions; it also enables the silicone foam sheet to maintain an intact pore structure and high strength after sintering at high temperatures, thus preventing breakage. Therefore, the silicone foam sheet of this invention has good thermal insulation performance; simultaneously, the silicone foam sheet of this invention also exhibits good cushioning performance.

This application discloses a transformer bushing, comprising a conductive rod and a head assembly, a composite insulator, an intermediate flange, and a tail assembly connected in sequence. The conductive rod passes through the head assembly, the composite insulator, the intermediate flange, and the tail assembly in sequence. The oil conservator of the head assembly is fixed to the insulating tube of the composite insulator, the insulating tube is fixed to the intermediate flange, and the intermediate flange is fixed to the oil-insulated tube of the tail assembly using adhesive. The internal pressure of the oil conservator during failure is greater than the internal pressure of the composite insulator during failure but less than the internal pressure of the oil-insulated tube during failure. This solution ensures the structural integrity of the transformer bushing during operation and prevents transformer oil leakage due to bushing damage.

This application discloses a transformer bushing, comprising a conductive rod and a head assembly, a composite insulator, an intermediate flange, and a tail assembly connected in sequence. The conductive rod passes through the head assembly, composite insulator, intermediate flange, and tail assembly in sequence. The oil conservator of the head assembly includes an interconnected cabinet and end caps, with at least one pressure relief device on the end caps. The second end of the cabinet is fixed to the first end of the composite insulator, the second end of the composite insulator is fixed to the first end of the intermediate flange, and the second end of the intermediate flange is fixed to the first end of the oil-insulated tube in the tail assembly using adhesive. The internal pressure of the oil conservator during failure is greater than the internal pressure of the composite insulator during failure but less than the internal pressure of the oil-insulated tube during failure. The solution of this application can ensure the structural integrity of the transformer bushing during operation and prevent transformer oil leakage due to damage to the transformer bushing.