7results about How to "Avoid heavy" patented technology

The invention discloses a self-heating material and a preparation method and application thereof, and relates to the field of self-heating products. The self-heating material comprises the following raw materials in parts by weight: 38-41 parts of iron powder, 9-11 parts of activated carbon, 12-15 parts of silane modified diatomite, 3-4 parts of super absorbent resin, 1.0-1.5 parts of sodium chloride and 30-35 parts of water. The super absorbent resin is prepared from the following raw materials: acrylic acid, acrylamide, a cross-linking agent, diatomite, white carbon black and an initiator. The self-heating material has the heating effects of quick start and long-term endurance, the material is prevented from being thick and heavy, and the wearing comfort of the product is improved.

This invention discloses a radar-infrared compatible stealth composite material with infrared camouflage function, belonging to the field of multi-spectrum compatible stealth technology. The radar-infrared compatible stealth composite material comprises, from top to bottom, a top coding layer, a first dielectric layer, a second dielectric layer, a conductive reflective layer, and a third dielectric layer along the electromagnetic wave propagation direction. The top coding layer includes several zero-patch large units and one-patch large units. Along the electromagnetic wave propagation direction, the zero-patch large units and one-patch large units, together with the dielectric layer and reflective layer below them, constitute zero-coding units and one-coding units, respectively. These units are arranged in an array structure according to coding patterns generated by a multi-objective optimization algorithm. This invention utilizes the arrangement of zero-coding units and one-coding units to construct an infrared camouflage pattern matching the complex background thermal radiation characteristics in the infrared band, and utilizes the reflection phase difference between the two coding units in the microwave band to achieve radar cross-section reduction, thus completing radar-infrared compatible stealth.

The utility model relates to PVC electric power pipe technical field especially light weight PVC electric power pipe, including pipe body, the pipe body is composed of inner tube, outer tube and spiral reinforcing rib, the inner side of a plurality of spiral reinforcing rib is fixedly connected with the outer wall of inner tube, the outer side of a plurality of spiral reinforcing rib is fixedly connected with the inner wall of outer tube. Through the cooperation between pipe body, inner tube, outer tube, spiral reinforcing rib and annular reinforcing rib, the three-layer structure is formed by material function differentiation+structure mechanics optimization system advantage, the three-grade design of inner tube filler weight reduction, hollow reinforcing rib layer structure enhancement, outer tube protection makes pipe material weight to reduce 30% 40% compared with traditional product, and the compression strength is improved, effectively avoid the problem that traditional PVC electric power pipe exists weight is big, this not only increases the transportation cost, also brings the problem of the inconvenience of construction installation.

The invention relates to the technical field of integration of perovskite solar cells and flexible electronic equipment, in particular to a perovskite / perovskite / crystalline silicon three-junction laminated solar power supply electronic paper book which comprises an electronic paper book body, a three-junction laminated solar cell module and an integrated fixing structure. The electronic paper book body comprises a flexible electronic ink display screen, a low-power-consumption master control module, an energy storage module and a light sensing module. According to the invention, the photoelectric conversion efficiency is improved through the three-junction band gap complementary design so as to meet the rapid power supplement requirement, weak light response is optimized through full-spectrum absorption and illumination adaptive regulation and control so as to adapt to multiple scenes, and the flexible conductive layer and the stress buffer structure are utilized to solve flexible adaptation and realize lightening and thinning. Perovskite modification and crystalline silicon passivation are utilized to enhance stability matching and long-term use, intelligent charging regulation and control are realized through linkage of light sensation and a main control module, safety and service life are guaranteed, and the use requirements of efficient power supply, flexibility, portability, stability and reliability of the electronic paper book are met in all directions.

The utility model relates to the technical field of mobile phone shell, concretely relates to a high strength mobile phone shell, the mobile phone shell includes the casing for containing mobile phone, the casing includes the frame and the coating that fits in the frame openwork department, the coating includes the wear -resisting layer, first fiber layer, second fiber layer and third fiber layer that set up in order from top to bottom laminated, the wear -resisting layer is used for wear -resisting scratch, first fiber layer and third fiber layer are used for promoting the strength of coating, second fiber layer is used for absorbing impact energy. The utility model aims at providing a kind of high strength mobile phone shell, through the laminated structure design of uniqueness, the combination of wear -resisting layer and multilayer fiber layer, not only promote the strength and wear resistance of mobile phone shell, but also effectively absorb impact energy, thereby in the protection mobile phone, prolong the service life of mobile phone shell.

The invention discloses a radar and infrared compatible stealth composite material with an infrared camouflage function, and belongs to the technical field of multi-spectrum compatible stealth. The radar infrared compatible stealth composite material sequentially comprises a top coding layer, a first dielectric layer, a second dielectric layer, a conductive reflecting layer and a third dielectric layer from top to bottom in the electromagnetic wave propagation direction. The top coding layer comprises a plurality of zero patch large units and one patch large unit; the zero patch large unit and the first patch large unit from top to bottom respectively form a zero coding unit and a first coding unit together with the dielectric layer and the reflecting layer below the zero patch large unit and the first patch large unit from top to bottom along the electromagnetic wave propagation direction; and array structures are formed according to coding patterns generated by a multi-objective optimization algorithm. The zero coding unit and the one coding unit are arranged, an infrared camouflage pattern matched with complex background thermal radiation characteristics is constructed in an infrared band, and the reflection phase difference between the two coding units is utilized in a microwave band, so that the radar cross section is reduced, and radar infrared compatible stealth is completed.

The invention belongs to the technical field of robots, and discloses a pneumatic soft mechanical arm based on a multi-layer composite film and a machining method, and the pneumatic soft mechanical arm comprises a bending unit assembly and a pneumatic control assembly; the bending unit assembly comprises a center air strip, a first bending unit and a second bending unit, wherein the first bending unit and the second bending unit are orthogonally connected. The bending unit comprises four layers of composite films which are connected in sequence, and three layers of cavities are formed among the four layers of composite films; the central air strip penetrates through the first bending unit and the second bending unit; the pneumatic control assembly comprises an air inflation unit and an air exhaust unit. The air inflation unit and the air exhaust unit are connected with the cavities and the central air strip and used for controlling the air inflation state of the cavities and the central air strip. Four-degree-of-freedom bending angle adjustment can be achieved, the flexibility is far better than that of a rigid mechanical arm and a traditional soft robot, the problem that traditional multi-layer stacking is thick and heavy is avoided, and the size of the mechanical arm is effectively reduced; and variable stiffness supporting can be achieved, and the stiffness adaptation requirements under different operation scenes are considered.