7results about How to "Not easy to layer" patented technology

The application provides an oil-based multi-walled carbon nanotube slurry as well as a preparation method and application thereof. The oil-based multi-walled carbon nanotube slurry comprises 1-23% by mass fraction of multi-walled carbon nanotubes, 0.1-5% by mass fraction of sodium 4-styrenesulfonate, 0.5-35% by mass fraction of polyvinylidene fluoride and 57-98.4% by mass fraction of N-methylpyrrolidine. The multi-walled carbon nanotubes in the oil-based slurry are uniformly dispersed, and the multi-walled carbon nanotubes exist in a monodisperse form and are not prone to agglomeration. The oil-based multi-walled carbon nanotube slurry has stable physical and chemical properties, can be stored for a long time and is not prone to stratification. The oil-based slurry can be directly used in the homogenization process of the oil-based slurry, the multi-walled carbon nanotubes in the pole piece prepared after coating are uniformly distributed, the preparation process of the oil-based slurry is simple, the system temperature in the preparation process is constant and controllable, and the oil-based slurry can be prepared and applied on a large scale.

This utility model relates to the field of textile fabrics, and more particularly to a green and environmentally friendly fabric, comprising a reinforcing surface layer and an environmentally friendly base layer. A heat-melting yarn is disposed between the reinforcing surface layer and the environmentally friendly base layer. The environmentally friendly base layer is made of regenerated cellulose fibers. The top and bottom ends of the heat-melting yarn are fixedly connected to the reinforcing surface layer and the environmentally friendly base layer, respectively. The heat-melting yarn is woven from heat-melting fibers. The reinforcing surface layer is woven from fiber bundles, which include tensile fibers, flame-retardant fibers, absorbent fibers, polyester fibers, and corrosion-resistant fibers. The tensile fibers, flame-retardant fibers, absorbent fibers, polyester fibers, and corrosion-resistant fibers are bundled together to form a tight structure. This invention solves the technical problems of insufficient environmental performance and functionality in traditional fabrics.

This invention belongs to the field of electromagnetic materials technology, and discloses a composite microwave absorbing material with a cross-dimensional interpenetrating interface, its preparation method, and its applications. The material comprises, in its thickness direction, a loose fibrous layer, a dense conductive carbon layer, and electromagnetic functional particles anchored to the inner walls of pores, the surface of the layers, and / or the interlayer gaps. The roots of the fibrous carbon extend into and are anchored to the pores and / or interlayer gaps of the framework, forming a cross-dimensional interpenetrating interface to achieve continuous conductive connections and / or local fusion connections. The electromagnetic functional particles are in close contact with the carbon framework, providing magnetic loss and / or dielectric loss. The preparation method includes: employing a stepwise energy beam-induced carbonization strategy on the first and second carbonizable precursor layers to induce the generation of fibrous carbon and in-situ carbonization of the infiltrated portions, achieving interpenetrating anchoring and particle conversion anchoring. This material is suitable for low-frequency absorption-dominant electromagnetic shielding, microwave absorbing patches, and flexible electronic devices.

The application provides a device for reducing welding marks in an alumina ceramic crucible, which comprises a cylindrical outer mold with a hollow structure, an inner mold arranged on the inner side of the outer mold, a cylindrical closed forming cavity arranged between the inner mold and the outer mold, a base jointed to the bottom of the outer mold, two second grouting openings in a parallelogram shape and in opposite directions arranged in the middle of the base, a feeding disc connected to the lower part of the base, and a first grouting opening arranged in the center of the feeding disc. The application also provides a method for reducing welding marks in an alumina ceramic crucible, which comprises the following steps: assembling the outer mold, the inner mold, a mold core ring, the base and the feeding disc; placing the mold into water with a temperature of 24-26 DEG C; injecting alumina ceramic grouting liquid into the mold from the first grouting opening to form; and demolding. The application can reduce welding marks in an alumina ceramic crucible and improve the quality of finished products.

This invention discloses an aminated graphene oxide-based bipolar membrane and its preparation method, belonging to the field of bipolar membrane technology. The bipolar membrane is composed of a sulfonated polyphenylene sulfone cation layer, an aminated graphene oxide interlayer, and a quaternized polyphenylene ether anion layer stacked sequentially. This invention utilizes the aminated graphene oxide as the interlayer, taking advantage of its two-dimensional sheet-like morphology, abundant catalytic groups, and cross-linking effect to achieve a bipolar membrane with low water dissociation voltage, good interlayer compatibility, and structural stability. When applied to electrodialysis, it improves alkali concentration and current efficiency compared to commercially available membranes, while reducing energy consumption, showing promising application prospects in acid and alkali preparation, resource recovery, and other fields.

This utility model discloses a multi-layer composite plastic-free waterproof packaging paperboard, comprising, from the outside to the inside, a waterproof functional layer, a first fiber substrate layer, a moisture regulating layer, a second fiber substrate layer, and a support and cushioning layer, stacked sequentially. A micron-level interlocking structure is formed at the interface between the first fiber substrate layer and the waterproof functional layer. The waterproof functional layer is composed of a plastic-free fiber layer impregnated or coated with a bio-based hydrophobic agent. The moisture regulating layer is a loose cellulose fiber web loaded with highly absorbent resin particles. The support and cushioning layer is a recycled pulp molding layer with a honeycomb or corrugated three-dimensional structure. The plastic-free composite process strengthens the interlayer bond through the interweaving of plant protein glue and hot-pressed fibers. The overall structure has high strength, strong waterproof capability, and is environmentally friendly, effectively solving the pollution problems caused by traditional plastic film packaging.

The invention relates to a disc for a disc brake and a method for manufacturing the same. The disc comprises a brake band equipped with two opposite braking surfaces and made of gray cast iron or steel, a base layer covering at least one of the two braking surfaces, and a bonding layer interposed between the base layer and the braking surface. The base layer comprises a titanium matrix and / or titanium alloy containing carbides and defines the tribologically active surface of the disc, or the base layer comprises a layer of titanium and / or titanium alloy and is covered by a coating layer comprising a carbide-based layer and defining the tribologically active surface of the disc. The bonding layer comprises a titanium layer or comprises a titanium or steel alloy layer. A first intermediate fusion layer having a mixed composition between the bonding layer and the brake band is provided at the junction of the bonding layer with the brake band. A second intermediate fusion layer having a mixed composition between the base layer and the bonding layer is provided at the junction of the base layer with the bonding layer. The base layer and the bonding layer have a crystal structure with a growth direction mainly orthogonal to the braking surface.