44results about How to "Light weight high strength" patented technology

The invention discloses a rail vehicle body which is low in weight and renewable in resource, preserves heat and lowers noise. The rail vehicle body comprises a roof, end walls, a side wall and a bottom frame. The bottom frame comprises a bottom plate and a bearing structure. A vehicle main body is defined by the side wall, the roof and the bottom plate. The side wall and the roof are in fillet transition, the side wall and the bottom plate are in fillet transition, the vehicle main body is integrally formed by winding bamboo skin and resin, the end walls are fixed to the ends of the vehicle main body, and the vehicle main body is fixed to the bearing structure. The invention further discloses a preparation method of the rail vehicle body. The preparation method includes the steps of resin modification, wherein modifier and flame retardant are added to the resin; bamboo skin pretreatment, wherein the bamboo skin is subjected to water removal and antiseptic treatment, and then the bamboo skin is connected into a continuous bamboo skin belt; manufacturing of a mandrel; vehicle main body winding, wherein the bamboo skin belt winds around a mandrel in a transverse, longitudinal and spiral intersecting mode, and the modified resin is poured during winding; manufacturing of the end walls and the bearing structure; fixation of the end walls to the ends of the vehicle main body; fixation of the vehicle main body to the bearing structure.

The invention discloses a transformer sound insulation shell material and a preparation method thereof, which belong to the field of materials and solve the problem of poor sound insulation effect of existing materials. The preparation method specifically comprises the following steps of adding bakelite, epoxy resin, glass fibers, chemigum, polyvinyl chloride resin, cenosphere, expanded vermiculite, calcium carbonate, diatomaceous earth, silicone oil and antioxygen into a container, stirring for 15 to 20 minutes at the rotating speed of 1600 to 1900 r/min, uniformly mixing, then adding dichloromethane, continuously stirring for 5 to 10 minutes, adding acetic acid at last, stirring for 5 to 10 minutes at the rotating speed of 2000 to 2200 r/min, pouring raw materials which are uniformly mixed into a mold, solidifying for 60 to 80 minutes at the temperature of 65 to 75 DEG C, cooling and demolding, so as to obtain the transformer sound insulation shell material. The preparation method has the advantages of simplicity, easiness in operation and low production cost and can be widely used for transformer shell and case materials.

The invention relates to a ventilation device, in particular to a ventilation device on the top of a radome. The ventilation device on the top of the radome is used for solving the problems that an existing radome ventilation device is low in manufacturing efficiency, low in finished product quality, poor in universality of assembly with various radomes, difficult in later maintenance and poor in natural ventilation effect, rain leakage often happens, and the use performance of a radar antenna is influenced. The ventilation device on the top of the radome comprises a mushroom-shaped upper radome body, a base and turnover plates, wherein the mushroom-shaped upper radome body is buckled to the base, ventilating windows are arranged on the outer side walls of hollowed-out step platforms at the bottom of the base, and the turnover plates are installed on the ventilating windows. A connecting flange extending outwards is arranged on the edge of the mushroom-shaped upper radome body, the mushroom-shaped upper radome body is connected with the annular outer edge through the connecting flange, and a through hole is formed in the bottom surface of a hollow cylinder and provided with a connecting flange extending inwards. The ventilation device on the top of the radome is applicable to the field of wireless communication.

The invention discloses a novel prefabricated detachable and repairable aseismic bridge column structure system and an implementation method, and belongs to the technical field of bridge structure design. The structural system is mainly composed of cover beams, ultra high performance concrete (UHPC) steel pipes, bridge pillars, SMA plastic hinge device sand bearing caps; the bridge column and thebearing cap are connected by the SMA plastic hinge device, The SMA plastic hinge device is composed of an ECC outer layer, a spiral steel ring, an embedded steel pipe and an SMA pipe. The SMA pipe ispierced through a bolt hole reserved in an upper plate and an lower plate of the SMA plastic hinge, and is connected with a bridge column and a bearing cap, which can provide good energy dissipation performance, so that the structural system has good seismic resistance. The invention discloses a novel prefabricated detachable repairable aseismic bridge column structure system can be realized by adopting the prefabricated assembly method, the assembly is simple, the construction period is short, each component can be disassembled, the specific part can be replaced or repaired in the process ofrepairing the bridge, the maintenance cost of the bridge can be greatly reduced, and the generation of construction waste can be greatly reduced, and the green environment protection can be achieved.

The invention belongs to the technical field of high polymer material, specifically relates to a material of a noise-reducing and radiating shell of a transformer. The shell material comprises the following raw materials by weight parts: 30-40 parts of polyurethane resin, 15-26 parts of methyl vinyl silicone rubber, 20-35 parts of carbon fiber, 10-20 parts of aluminium oxide,7-12 parts of kieselguhr, 2-8 parts of silicone oil, 0.5-1.5 parts of antioxidant,2-5 parts of 2,5-dimethyl-2,5-dual (tert butyl peroxy)hexane. The noise-reducing and radiating shell material of the transformer provided in the invention has lightweight, high hardness, shock resistance, wearing resistance, ageing resistance and good effects of sound absorption and radiating.

The invention provides a lifting hook clamp for four-split wires of carbon fiber plates for 500 kV hot-line work. The lifting hook clamp comprises a horizontal clamp body, two vertical clamp bodies, a second wire hook and a first wire hook. The horizontal clamp body, the first wire hook, the second wire hook and the vertical clamp bodies are made of carbon fiber plates. Each carbon fiber plate comprises at least two carbon fiber cloth layers and at least one carbon fiber yarn layer, and each carbon fiber yarn layer is located between the every two corresponding carbon fiber cloth layers. Each carbon fiber cloth layer is formed by interweaving longitudinal carbon fiber and transverse carbon fiber in a one-up and one-down mode, and the fiber width of the longitudinal carbon fiber is equal to that of the transverse carbon fiber. Each carbon fiber yarn layer is formed by interweaving carbon fiber in a one-up and one-down two-way mode. The carbon fiber cloth layers and the carbon fiber yarn layers are dipped with adhesive agents. The clamp is high in durability, will not rust, can be used in a high-acid, high-alkali and high-salt environment with atmospheric corrosion and further has the advantages of being high in fatigue resistance, resistant to wear and ageing and the like.

The invention discloses an energy saving integrated engineering bamboo assembly building system with a low cost structure. The energy saving integrated engineering bamboo assembly building system withthe low cost structure comprises a main wall board, a side wall board and a building roof board; the main wall board and the side wall board are all bonded by inner side engineering bamboo boards, straw boards and outer side engineering bamboo boards in sequence; the building roof board includes an upper side engineering bamboo board, the straw boards, a lower side engineering bamboo board and stiffening ribs; the multiple straw boards are bonded between the upper side engineering bamboo board and the lower side engineering bamboo board, rib slots are formed between the adjacent straw boards,and each rib slot is bonded with the stiffening ribs; and the main wall board and the building roof board are connected through metal connectors and L-shaped angle steel connectors, the side wall board and the building roof board are connected through the metal connectors and the L-shaped angle steel connectors, and the main wall board and the side wall board are connected through the metal connectors and the L-shaped angle steel connectors. The energy saving integrated engineering bamboo assembly building system with the low cost structure simplifies the complex connection mode, the field assembly is simple and fast, the construction efficiency is effectively improved, and the advantages of factory reservation system, stable quality, small space occupation, convenient transportation, lowtransportation cost, environmental protection and the like are realized.

The invention discloses a preparation method of high-temperature-resistant and fire-proof carbon fiber cloth. The preparation method is characterized by comprising the steps as follows: (1) blending: all fiber materials are blended and woven into carbon fiber cloth; (2) cleaning and drying: the carbon fiber cloth is immersed in a cleaning fluid for heated cleaning, taken out and dried until the moisture content is 7%-10%; (3) surface reduction: the carbon fiber cloth is subjected to a reduction reaction in a reaction kettle by use of CO gas; (4) impregnation treatment: the reduced carbon fiber cloth is immersed in an impregnation liquid for impregnation treatment; (5) plasma treatment: the carbon fiber cloth is placed in a plasma treatment machine for plasma treatment and subjected to secondary impregnation; (6) oxidation treatment: ozone is introduced into the reaction kettle and oxidation treatment of the carbon fiber cloth is carried out. The prepared carbon fiber cloth has good fire resistance, has better shielding effects on ultraviolet and sunlight and has a deodorization function.

The invention relates to a lightweight composite wall panel and belongs to the field of building materials. Not only is a novel building material developed, but also a new field is opened up for urbansludge treatment. The wall panel is a square thick plate, grooves or ridges are processed at four side faces of the wall panel respectively. The grooves and the ridges are oppositely disposed, that is, a groove is processed at one side face, and the ridge is processed on the other corresponding side face. The wall panel is prepared from, by weight ratio, 65-75% of sludge ceramsite, 12.5-17.5% ofcement and 12.5-17.5% of gypsum. Water accounts for 72-78% the weight of the cement and the gypsum. The weight ratios of the weights of additives to the weight of the cement and the gypsum are high iron powder 0.8-1.2%., cellulose 0.08-0.12%., alkali inhibitor 1.8-2.2%., and water reducing agent 1.8-2.2%.. The lightweight composite wall panel has the advantages of high precision, small size, lightweight, good sound insulation and heat insulation effect, energy saving and environmental protection, simple and convenient construction and high efficiency, and can be widely used in the construction of interior walls and exterior walls of buildings.

The invention relates to an electronic product shell. The shell is manufactured by combining and curing a continuous prepreg sheet material and a short-cut prepreg sheet material by adopting a compression molding method. The invention further relates to a method for manufacturing the electronic product shell.

The invention discloses a preparation method of a high-strength XPS (extruded polystyrene) thermal insulation board, and belongs to the technical field of preparation of XPS thermal insulation boards. According to the specific scheme, raw materials for preparing the thermal insulation board comprise an activated carbon-graphene embedded material. A preparation method of the embedded material comprises the steps: making tungsten carbide and graphene powder jointly subjected to ball milling, then adding activated carbon for continuous ball milling, adding water into a ball-milled mixture, adjusting the pH to be 8-8.5, carrying out ultrasonic treatment in the stirring state, and centrifugally filtering the solution subjected to ultrasonic treatment to obtain a precipitate; carrying out high-temperature treatment on the precipitate at 350 to 550 DEG C for 20 to 30 minutes to obtain activated carbon-graphene powder; and embedding the activated carbon-graphene powder with melamine resin to obtain an activated carbon-graphene embedded material. The prepared XPS thermal insulation board is higher in overall waterproof performance, light in weight and high in strength.

The invention discloses a carbon fiber decorative ballpoint pen and a manufacturing method thereof. The pen includes a pen cover, a pen core, and a pen body. Cylindrical sleeve. The sleeve is made of special materials and techniques, and the ballpoint pen of this patent application has the following effects: 1. Light weight and high strength. 2. The decoration effect is good and the product grade is high. Because carbon fiber has light weight, good thermal conductivity, and epoxy resin has the characteristics of good transparency and good skin feeling, the contact between the cylinder and human skin has the advantages of feeling lubricated and good grip. 3. Better practicality. Carbon fiber reinforced composite materials also have the advantages of heat resistance and aging resistance, which endow the cylinder with better practicability and applicability. The specifications and sizes of the cylinder can be changed freely, and the practicability will not be affected even if the cylinder becomes larger.

A carbon fiber plate horizontal double-fission wire lifting hook clamp for 220 kV hot-line work comprises a clamp body. A left wire hook is arranged at one end of the clamp body. A right wire hook is arranged at the other end of the clamp body. The clamp body, the left wire hook and the right wire hook are integrally designed. The carbon fiber plate horizontal double-fission wire lifting hook clamp for 220 kV hot-line work is characterized in that the clamp body, the left wire hook and the right wire hook are made from a carbon fiber plate; the carbon fiber plate comprises at least two carbon fiber cloth layers and at least one carbon fiber silk layer; the carbon fiber silk layer is located between the two carbon fiber cloth layers; the carbon fiber cloth layers are formed by interweaving longitudinal carbon fibers and transverse carbon fibers in an up-and-down manner; the width of the longitudinal carbon fibers is equal to that of the transverse carbon fibers; the carbon fiber silk layer formed by interweaving carbon fibers in an up-and-down manner; and the carbon fiber cloth layers and the carbon fiber silk layer are provided with grouting agents in a dipping mode. The clamp is durable, will not get rusty and can be used in a high-acid, high-alkali, high-salt and high-atmosphere-corrosion environment and further has the beneficial effects of being high in strength, resistant to abrasion, resistant to aging and the like.

The invention belongs to the technical field of external wall construction of building structures, and provides a quick-dismantling building formwork and a light-weight cast-in-place wall body construction method. The quick-dismantling building formwork comprises panels, rib plate groove beams and docking purlines. The rib plate groove beams comprise a plurality of transverse rib plate groove beams and a plurality of longitudinal rib plate groove beams, wherein the transverse rib plate groove beams and the longitudinal rib plate groove beams are arranged at the rear side of the panels in a crossing mode. The docking purlines are matched and clamped in the rib plate groove beams in a sliding mode, locking pieces are arranged between the docking purlines and the rib plate groove beams, and when the docking purlines are moved in place, the locking pieces are used for locking the docking purlines. The quick-dismantling building formwork is reasonable in structural design, light in weight and high in strength, can quickly assemble large-area flat formworks, inside corner formworks and external corner formworks, and effectively solves the problems of low efficiency and high labor intensity of the traditional formwork assembling construction, and meanwhile, the construction of the light-weight cast-in-place wall body has the advantages of high construction efficiency, good construction effect and effective guarantee of wall body quality.

The invention discloses a manufacturing method of a full-core reinforced composite template. The method comprises the following steps of 1, mixing materials, specifically, fully stirring and uniformly mixing phenolic resin, epoxy resin, melamine resin, benzoxazine resin, a curing agent, a release agent, a foaming agent and a diluent according to a formula; 2, infiltrating, specifically, fully infiltrating fiber reinforced materials with different varieties, specifications and gram weights through a glue dipping line tank, conducting heating and pre-curing through a drying tunnel to achieve the needed feeding amount and residual volatile matter, conducting cutting and stacking, and preparing intermediate prepregs with different varieties, specifications and gram weights; 3, conducting blank assembling, specifically, conducting blank assembling according to the density, thickness, size specification and strength requirements of the target product; and 4, conducting thickness limiting, heating, foaming, curing and molding through a hot press, inspecting, cutting, packaging and warehousing to obtain a full-core reinforced composite template product. The full-core reinforced composite template prepared by the method is light in weight, high in strength, flame-retardant, corrosion-resistant, homogeneous inside and outside, and free of structural defects. The manufacturing method is feasible and low in cost.