8results about How to "Improve interlayer bonding performance" patented technology

The invention discloses a high-strength power cable which sequentially comprises a special-shaped stranded conductor, a layered tooth-shaped insulating layer, a honeycomb-shaped filling layer, a spiral armor layer and a composite sheath layer from inside to outside. The invention discloses a manufacturing method of a high-strength power cable. The manufacturing method comprises the following steps: S1, manufacturing a special-shaped stranded conductor; s2, forming a layered tooth-shaped insulating layer; s3, assembling the honeycomb-shaped filling layer and the spiral armor layer; and S4, forming the composite sheath layer and processing a finished product. The occlusion type structure of the special-shaped stranded conductor is matched with the graphene modified conductive paste, so that the tensile strength and the structural stability of the conductor are greatly enhanced, and deformation and strand breakage are effectively avoided; the stainless steel wire armor layer which is locked in a reverse spiral mode improves shock resistance and extrusion resistance with high coverage rate and pre-tightening force, and meets flexible laying requirements. And due to the adaptive structure and the wave-shaped design of the composite sheath layer, the interlayer binding force is optimized, and the cable is endowed with excellent wear resistance, aging resistance and bending resistance.

The application discloses a TPU-based damping composite material and a preparation method thereof. The TPU-based damping composite material is composed of two parts of A component and B component arranged alternately, wherein the A component comprises the following components in parts by weight: TPU 1 100; the B component comprises the following components in parts by weight: TPU 2 48~63 phenolic resin, 27~32, filler 10~20; the TPU 1 is a TPU of polyester dihydric alcohol, diphenyl methane diisocyanate (MDI) and 1,4-butanediol (BDO); and the TPU 2 is a TPU of polycarbonate dihydric alcohol (PCDL), diphenyl methane diisocyanate (MDI) and 1,4-butanediol (BDO). The TPU-based damping composite material has a wide effective damping temperature range (tan delta > 0.3) and good mechanical properties; and the preparation method is a continuous process, has high preparation efficiency and low energy consumption.

This invention belongs to the field of metal coating technology, specifically relating to a gradient composite coating, its preparation method, and its application. The composite coating of this invention comprises a multilayer Al3BC / Al composite material coating, wherein the Al3BC content in the Al3BC / Al composite material is 0 wt.% to 80 wt.%, and the Al3BC content increases or decreases sequentially from the inside to the outside of the multilayer coating, wherein the multilayer comprises at least three layers. The gradient Al3BC / Al composite coating of this invention balances high reflectivity, ablation resistance, lateral heat dissipation, longitudinal heat insulation, and low internal stress in laser protection scenarios, as well as high surface hardness, low interfacial stress, and high bonding strength in wear-resistant scenarios. Furthermore, the preparation method of the gradient Al3BC / Al composite coating is simple, with controllable parameters, and suitable for mass production. This invention also provides applications of this coating in the fields of laser protection coatings and wear-resistant coatings.

This utility model discloses a lead frame with extended pins, relating to the field of semiconductor packaging technology. The lead frame includes a base island, a first pin array, and a second pin array. The base island, from top to bottom, includes an electrical shielding layer, a heat diffusion layer, a dielectric isolation layer, a signal transmission layer, a stress conditioning layer, and an interface enhancement layer. The heat diffusion layer is fixed above the electromagnetic shielding layer via interface metallurgical bonding, with its edge extending upwards to form a ring-shaped support platform. The first pin array extends horizontally outwards from the outer wall of the ring-shaped support platform of the heat diffusion layer and extends to the outer side of the base island. The second pin array extends inwards from the central region of the dielectric isolation layer towards the inner side of the ring-shaped support platform. This lead frame with extended pins, through a multi-layer composite base island structure and the coordinated design of the extended pins, achieves performance optimization in electromagnetic shielding, high-frequency signal attenuation reduction, and mechanical strength enhancement.

This invention provides a gradient silicon nitride ceramic femoral head prosthesis and its preparation method, relating to the technical fields of clinical medicine and biomaterials. The femoral head prosthesis is prepared from 88-94 parts of silicon nitride powder, 4-12 parts of sintering aid, 5-20 parts of tungsten carbide titanium, and 0-30 parts of pore-forming agent, wherein the pore-forming agent cannot be 0 parts. The gradient silicon nitride ceramic femoral head prosthesis of this invention retains the advantages of silicon nitride ceramics—low wear, low friction, high strength, high fracture toughness, and good chemical stability—at the interface between the femoral head prosthesis and the liner, while reducing wear on the titanium alloy femoral stem cone caused by the large hardness difference between the femoral head prosthesis and the liner. This reduces the incidence of organ toxicity, periprosthetic osteolysis, and aseptic loosening caused by metal wear debris, improves the survival rate of the femoral head prosthesis and the femoral stem cone, reduces the revision rate of replacement surgery, and saves patients' treatment costs.

The invention discloses a wear-resistant weather-resistant high-strength flame-retardant multi-layer co-extrusion woven fabric and a preparation method thereof. The woven cloth comprises a polyethylene glycol terephthalate (PET) layer and polyamide (PA) layers arranged on the upper surface and the lower surface of the PET layer, and the mass ratio of the PET layer to the PA layers is (38-42): (58-62). The PET layer comprises PET master batch, PTFE powder and a dispersing agent; the PA layer comprises PA particles, a flame retardant, a bridging agent, PTFE powder, an anti-ultraviolet agent and an antioxidant. The preparation method comprises the following steps: carrying out drying pretreatment on the PET master batch and the PA particles; respectively blending with corresponding auxiliaries to obtain pretreated master batches; melting and co-extruding the two pre-treated master batches at 180-265 DEG C, and cooling and drafting to obtain co-extruded flat filaments; and finally weaving into cloth. The obtained woven cloth has excellent wear resistance, weather resistance, high strength and flame retardance.

The invention relates to a composite metal foil with high peel strength, a metal-clad laminated plate and a battery. The high-peel-strength composite metal foil comprises a base film layer and a metal layer, the metal layer is arranged on at least one side face of the base film layer, a plurality of protrusions are arranged on the side face, close to the base film layer, of the metal layer, the height of the protrusions is 0.5-5 micrometers, the protrusions comprise the first protrusions and the second protrusions, the height of the first protrusions is 1.5-5 micrometers, the height of the second protrusions is 1.5-5 micrometers, and the height of the second protrusions is 1.5-5 micrometers. The height of the second protrusions ranges from 0.5 micrometer to 1.5 micrometers. Wherein the second protrusions are arranged between at least 40% of the adjacent first protrusions. The overall design is beneficial to improving the interlayer binding force between the metal layer and the base film layer, the delamination resistance of the composite metal foil can be improved, the working safety of the lithium battery can be improved, meanwhile, the bonding stability of a circuit and the metal foil can be improved when the composite metal foil is used for circuit manufacturing, and the circuit manufacturing quality can be improved.

The invention belongs to the technical field of batteries, and provides a composite metal lithium negative electrode, a preparation method thereof and a battery, the composite metal lithium negative electrode comprises a metal lithium base layer, and a first passivation layer, an intermediate polymer layer and a surface barrier layer are sequentially arranged in the thickness direction of the metal lithium base layer; the first passivation layer comprises lithium sulfide and an organic sulfur derivative; the middle polymer layer comprises a first polymer matrix, a lithium salt and a functional additive; the surface barrier layer comprises a second polymer matrix and an inorganic solid electrolyte. By arranging the first passivation layer, the middle polymer layer and the surface barrier layer on the metal lithium base layer, a gradient functionalized multi-layer synergistic protection structure is formed, a closed loop mechanism of chemical passivation-ion regulation-physical barrier is realized, and the problems of SEI film stability, lithium ion uniform transmission and dendritic crystal growth are solved.