72results about How to "Absorb impact energy" patented technology

The invention discloses a preparation method of polycarbonate/polyester alloy. Glycidyl methacrylate grafted ethylene-octylene multipolymer/organic modified needle-shaped aedelforsite composite toughener, i.e. a technology of simultaneously using organic/inorganic rigid particle toughener is adopted; the glycidyl methacrylate grafted ethylene-octylene multipolymer, organic modified needle-shaped aedelforsite, polycarbonate and polyester are melted and mixed in a double-screw extruder, to obtain high-performance alloy material. The prepared polycarbonate/polyester alloy has excellent integrated mechanical properties and size stability, the notched impact strength reaches 1200J/m, the tensile strength reaches 67MPa, the elongation at break reaches 250 percent, the flexural strength is up to 98MPa, the flexural modulus reaches 2750MPa, and the thermal deformation temperature in high load (1.82MPa) is up to 105 DEG C. Therefore, the prepared polycarbonate/polyester alloy can be applied in cars, and to outer decorations, household electrical appliances, IT and the like industrial products.

The invention discloses a method for preparing a polyester carbonate/acrylonitrile-butadience-styrene copolymer. The method chooses maleic anhydride grafted ethylene-octene copolymer/organic modified needle-shaped wollastonite compound flexibilizer as raw materials, i.e. both organic and inorganic rigid granular flexibilizers are used, the maleic anhydride grafted ethylene-octene copolymer, organic modified needle-shaped wollastonite and polyester carbonate/acrylonitrile-butadience-styrene copolymer are melted and blended in a double screw extruder to achieve a high-performance alloy material. The polyester carbonate/acrylonitrile-butadience-styrene copolymer prepared by the method has excellent comprehensive mechanical performance and dimensional stability; the notch impact strength is as high as 1050J/m, the elongation at break is 145 percent, the tensile strength reaches 65.5MPa, the bending strength is 96.5MPa, the flexural modulus is up to 2850MPa, and the heat distortion temperature is as high as 115.5 DEG C under high load (1.82MPa). The copolymer is applicable to manufacturing internal and external decorative articles of autos, household appliances, IT products and other industrial products.

The invention relates to a self-floating composite material bridge pressurized-water anti-collision device. The anti-collision device is characterized by comprising a shell part (12) and a water-spraying energy-consumption part (13), wherein the water-spraying energy-consumption part (13) is arranged by clinging to the bridge; the shell part (12) is arranged outside the water-spraying energy-consumption part (13); the shell part (12) consists of a composite material surface layer (1), a sandwich material layer (2) and a filling material body (3); the sandwich material layer (2) is clamped in the composite material surface layer (1) and forms a shell wall (14); the filling material body (3) is filled in space formed by the shell wall (14); the water-spraying energy-consumption part (13) consists of a canvas water bag (6) filled with water (10), a circle of transverse frameworks (8) which is arranged at a regular interval along the transverse direction of the canvas water bag (6) and longitudinal framework (9) which is arranged along the longitudinal direction of the water bag; the canvas water bag (6) is provided with draining holes (7) regularly; and the shell part (12) is also provided with a rail (11). The anti-collision device has the advantages of simple structure, convenient manufacture, installation and maintenance, low cost and environmental protection.

A vehicle (1) includes first and second rear-floor cross members (4, 5) provided between right and left rear-floor side members (2, 2) in a vehicle body rear part and a pair of right and left rear-floor cross member braces (6, 6) provided therebetween. The second rear-floor cross member is formed by a three-member connected body consisting of right and left extension parts (52, 52) connected to the right and left rear-floor side members and a body part (51) arranged therebetween. The rear-floor cross member braces are connected to the body part (51) of the second rear-floor cross member. Shock energy of a shock load applied to the vehicle body rear part from the rear can be absorbed efficiently while the deformation of a rectangular region surrounded by the first and second rear-floor cross members and the right and left rear-floor cross member braces is restrained.

A vehicle hood stopper structure, in which a stopper functioning as a buffer when closing the hood located at the front of the vehicle body is provided between the hood and the side member of the vehicle body, which includes a The support portion of the stopper, and the support bracket installed on the vehicle body side member, when a load greater than a certain value or more than the load generated when the hood is closed, acts on the support bracket supported by the support bracket. When the stopper is on, the support bracket is deformed to facilitate the downward movement of the stopper. The present invention effectively absorbs the impact energy when the engine cover is closed by adopting a simple structure, and effectively alleviates the impact load generated when a pedestrian's head hits the engine cover or the like in a collision accident.

While comprising filled minor compartments being filled with an inclusion in which a liquid makes the major component, and vacant minor compartments being filled with the air, at least one of the vacant minor compartments adjoins the filled minor compartments, and a fragile section is formed in at least one of ribs that demarcate the filled minor compartments and the adjoining vacant minor compartments. After the fragile section has fractured, shock energy can be absorbed furthermore by means of circulation resistance to the inclusion that flows from the filled minor compartments to the vacant minor compartments.

A car seat for several children and to sit on top of a regular car seat has leg assemblies arranged to absorb energy and reduce pitching in the event of a car crash.

The invention relates to the technical field of organic macromolecule compounds and provides a camouflage EVA (Ethylene Vinyl Acetate) long running shoe insole and a preparation method thereof. The sole material is characterized in that along with the increase of motion frequency, a damping factor is first increased and then is reduced, so that an optimal balance point is found for shock absorption buffer and motive force of sport shoes, and maximum energy absorption is achieved; the sole material is particularly suitable for being used as the insole material of the long running shoe; the camouflage EVA long running shoe insole is prepared by the following steps of firstly, performing internal mixing, mill mixing and granulating on raw materials such as the EVA, an ethylene-octylene copolymer, a foaming agent, a cross-linking agent, zinc stearate, zinc oxide, stearic acid and talcum powder to obtain natural color EVA stock; stirring the EVA stock and pigment to obtain stocks with different colors; secondly, stirring the stocks with the different colors to obtain multi-color mixed stock; finally, performing heating and foaming and secondary oil pressure molding to obtain a final product.

The invention relates to a high-impermeability cement-based composite material and a method for preparing the same. The high-impermeability cement-based composite material comprises, by weight, 20-30parts of 525 white cement, 40-60 parts of quartz sand, 18-20 parts of titanium dioxide powder, 10-12 parts of fly ash, 5-15 parts of chitosan nanogel, 3-5 parts of polyacrylate emulsion, 1-10 parts ofpitchstone vitrified micro-spheres, 0.5-2 parts of PVA (polyvinyl alcohol) celluloses, 6-8 parts of ionic liquid, 10-12 parts of crop straw powder, 3-6 parts of clay, 3-5 parts of diatomaceous earth,3-5 parts of maleic anhydride, 1-3 parts of whiskers, 3-6 parts of silane coupling agents, 0.5-2 parts of cellulose ether, 0.3-2 parts of redispersible latex powder, 0.1-3 parts of superplasticizers,0.5-2 parts of inorganic pigment and 60-70 parts of water. The method includes preparing composite materials from the maleic anhydride, the clay, the diatomaceous earth and the PVA celluloses; mixingand stirring the composite materials and other raw materials with one another to obtain the high-impermeability cement-based composite material which is a product.

The invention relates to the field of a recovery assistive device, and particularly relates to a walking aid; the walking aid comprises a bracket; the bracket comprises two front supporting rods, two back supporting rods, a front gear rod and a handle; the front supporting rod and the back supporting rod are composed of separated upper section and lower section; the upper section is connected with the lower section through an elastic device; the handle and the front gear rod are fixed on the upper section. The walking aid can effectively absorb and buffer the impact energy generated when a user is fallen down, and avoid the falling condition along with the user, effectively support the user; the walking aid is suitable for the aged and some patients with some troubles of walking, and the disabled.

The invention discloses a cylindrical lithium battery core bracket and a power battery pack, wherein the cylindrical lithium battery core bracket comprises an inorganic foamed bracket, a first metal support bump and a second metal support bump; the inorganic foamed bracket is a foamed blocky structure integrally formed by being inorganically and formed; a plurality of uniformly arranged open type C-shaped grooves are arranged at two sides of the inorganic foamed bracket; the first metal support bump is embedded at the bottoms of the C-shaped grooves; and the second metal support bump is embedded at two sides of the C-shaped grooves. The cylindrical lithium battery core bracket disclosed by the invention is good in anti-explosion performance; smashing self-destruction of the foamed bracket can occur in a self-explosion process of a battery core; the explosion energy is absorbed; the impact energy is absorbed; and the safety performance of a new energy vehicle is improved.

The invention discloses a fiber rod filling corrugated sandwich structure. The structure comprises an outer layer flat plate, an inner layer flat plate, a corrugated plate, fiber rods and filling resin, wherein the outer layer flat plate is parallel to the inner layer flat plate; the corrugated plate is arranged between the outer layer flat plate and the inner layer flat plate; the extending direction of corrugation of the corrugated plate is parallel to the outer layer flat plate; the fiber rods are arranged in cavities surrounded by the outer layer flat plate and the corrugated plate and cavities surrounded by the inner layer flat plate and the corrugated plate, and the cavities are all filled with the filling resin. The structure disclosed by the invention can effectively withstand the impact damage of space debris to the outer structure and inner facilities of a spacecraft, so as to play a favourable protective effect and effectively reduce the additional protection quality.

The invention discloses a convex submarine cable protection pipe which comprises a chain structure formed by meshing at least two sections of submarine cable protection pipe modules, and each sectionof submarine cable protection pipe module is of a half type structure and is formed by matching two symmetrical single structure units. A plurality of blind holes are symmetrically formed in the buttjoint faces of the two sides of each single structure unit, positioning pins are inserted into the blind holes, a plurality of grooves are formed in the outer surfaces of the single structure units, and steel strips are placed in the grooves. Each single structure unit comprises a head part, a main body and a tail part, two adjacent single structure units are mutually matched and connected throughan outer convex ring and an inner groove, and a submarine cable is arranged in the single structure units. And the outer surface of the convex submarine cable protection pipe is provided with a plurality of convex structures. The convex structures can reduce the swing amplitude of the submarine cable and prolong the service life; the convex structures are matched with the polyurethane material, so that collision energy can be effectively absorbed, and the submarine cable is protected from being damaged by collision; the material has excellent wear resistance, tear resistance and corrosion resistance at the same time, and the internal submarine cable is protected for a longer time.

The invention relates to the technical field of nylon toughening agents, and particularly discloses a core-shell toughening agent, a preparation method thereof and nylon applying the core-shell toughening agent. The maleic anhydride functionalized core-shell toughening agent is of a core-shell structure with a polyketone graft as a shell and an ethylene propylene diene monomer graft as a core, and comprises polyketone, ethylene propylene diene monomer, maleic anhydride, an initiator, an assistant crosslinker and a silane coupling agent; the preparation method comprises the following steps: initiating free radicals of the ethylene propylene diene monomer and the silane coupling agent by an initiator to generate grafting reaction to obtain an ethylene propylene diene monomer graft; and initiating free radicals of polyketone and maleic anhydride to carry out grafting reaction by the initiator to obtain a polyketone graft, and finally extruding the ethylene propylene diene monomer graft and the polyketone graft in an extruder to obtain the core-shell toughening agent. The prepared toughening agent can reduce the uncertainty of the grafting number and grafting position of maleic anhydride in the grafting process, the quality of the core-shell toughening agent is improved, and the physical performance of toughened nylon is improved.

The invention discloses a deep well ingate device with a deformation measuring function and a use method. The deep well ingate device comprises a plurality of ingate supports and an iron wire, the ingate supports are arranged side by side, and the two ends of the iron wire are horizontally fixed to a rock mass through embedded steel nails. Each ingate support comprises a top beam, a bottom beam, a left supporting column and a right supporting column, the left supporting column and the right supporting column are arranged between the top beam and the bottom beam in a mutually parallel mode, and the top beam is fixedly connected with the bottom beam through the left supporting column and the right supporting column. Each top beam comprises top beam inner I-steel and top beam outer I shaped steel, each top beam inner I shaped steel is fixedly connected with the corresponding top beam outer I shaped steel through a plurality of top beam web members, and a two-way digital scale is fixedly arranged on the lower portion of the top beam inner I shaped steel. The deep well ingate device is high in supporting intensity and high in adaptive capacity of surrounding rock deformation, a deformation monitoring device is arranged, so that the recoverability is good after the use of the device is completed, and the subsequent recycling is convenient to achieve.

The invention provides an anti-collision beam used for a vehicle and the vehicle. The anti-collision beam used for the vehicle comprises an anti-collision beam body, a left energy absorbing box, a right energy absorbing box and an inner strengthening part. An energy absorbing cavity is defined in the anti-collision beam body. The left energy absorbing box is arranged at the left end of the anti-collision beam body and extends backwards, and the right energy absorbing box is arranged at the right end of the anti-collision beam body and extends backwards. The inner strengthening part is arrangedin the energy absorbing cavity. The front end of the inner strengthening part is connected with the front side wall of the energy absorbing cavity. The rear end of the inner strengthening part is connected with the rear side wall of the energy absorbing cavity. By means of the anti-collision beam used for the vehicle and the vehicle, when the front side of the vehicle is impacted, impact force isreduced, the anti-collision beam absorbs impact energy, a pedestrian can be effectively protected when the vehicle collides with the pedestrian, hurt to the pedestrian is reduced, and the damage degree to a part on the front side of the vehicle can also be reduced.

The invention discloses an ultrahigh-strength shattering and bullet protecting layer which sequentially comprises an ultrahigh-strength steel layer (1), a common steel layer (2) and a concrete layer (3) from top to bottom, all the layers are detachably and fixedly connected into an integral composite structure through ultrahigh-strength device assembly connecting pieces, and meanwhile disassembly and replacement are convenient. The ultrahigh-strength alloy steel which is high in strength, good in fracture toughness, high in impact load resistance and low in cost is adopted as a first-layer material; different safety levels can be achieved by adopting different thickness matching schemes for all the layers, and typical earth-penetrating bullets with different equivalent weights, especially earth-penetrating weapons with large equivalent depths, can be impacted and broken. According to the composite structure, an ultrahigh-strength material is adopted, so that the earth-penetrating bomb is impacted and broken, and the protection capacity is improved; meanwhile, the structure is simple, manufacturing is easy, the application range is wide, and prefabricated components are convenient to construct, and can be applied to bullet shielding layers of military engineering and civil air defense engineering.

The invention relates to the technical field of vehicles, and particularly relates to a vehicle doorsill structure and a vehicle. The vehicle doorsill structure comprises a doorsill outer shell and aninner filling reinforcing structure, wherein the inner filling reinforcing structure is arranged in the doorsill outer shell and comprises foamed aluminum and an aluminum pipe which are matched witheach other, the aluminum pipe extends in the length direction of the threshold outer shell, and the foamed aluminum is arranged between the aluminum pipe and the threshold outer shell. According to the vehicle doorsill provided by the embodiment of the invention, the inner filling reinforcing structure is arranged in the vehicle doorsill, the structural high strength of the vehicle doorsill is greatly improved, and meanwhile, the structural weight of the vehicle doorsill is remarkably reduced through the design that the foamed aluminum is matched with the aluminum pipe. In addition, the foamedaluminum in the inner filling reinforcing structure can absorb impact force borne by the doorsill of the vehicle in the collision process of the vehicle, and damage to passengers can be prevented orreduced.