601results about "Protective equipment" patented technology

The invention belongs to the technical field of personal protection equipment, and particularly relates to a lightweight cut-resistant four-dimensional structure fabric based on high-performance composite fibers and a preparation method of the lightweight cut-resistant four-dimensional structure fabric. The structure is based on a high-performance composite fiber material and a nano silicon carbide embedding technology of high-performance polyethylene fibers, the hardness bottleneck of a single material is broken through, and multi-fiber compatibility is improved through cooperation of polyurethane fiber surface activation and polyurethane fiber anti-melting modification. The gradient twist core sheath yarn is a high-performance composite yarn, and the strength and the flexibility are balanced. In the aspect of the oversleeve fabric structure, a three-dimensional protection system comprising a honeycomb structure, a silica gel liner and a skin-friendly inner layer is adopted, so that the integration of multiple functions of hydrophobicity, fusion resistance and buffering of a light-weight cut-resistant material is realized. Under the EN 388 standard, 5-level cutting prevention can be achieved, a single high-performance polyethylene fiber cutting prevention oversleeve can only reach 3-4 levels, the weight of the composite fiber material is reduced by 40% compared with that of a full aramid fiber oversleeve, the thickness is reduced by 25%, and the composite fiber material can be suitable for complex scenes such as petroleum and electric power.

A three-dimensional microlattice layer comprising a plurality of interconnected filaments extending along at least three different directions from a plurality of nodes. The microlattice layer may further comprise at least one material layer extending laterally between and interconnecting at least two or more nodes. The at least one material layer may be configured to transversely and rotationally constrain the nodes to increase the overall compressive strength and stiffness of the microlattice structure. The at least one material layer may comprise a single, continuous layer and / or a plurality of material layer segments. The microlattice layer may comprise a single, continuous layer or a plurality of microlattice layer segments. The microlattice layer may be stacked, the stacked microlattice layers may further comprise one or more material layers and / or one or more impact mitigation layers.

A protective garment is disclosed that is reusable and can be relaundered over 70 times. The garment is made from a single layer barrier fabric. Any seams on the protective fabric are covered with a seam tape. The seam tape can include an adhesive layer, a cover layer, and an optional film layer positioned between the cover layer and the adhesive layer. The adhesive layer can be a crosslinkable polyester polymer.

A protective barrier affixable to a curved substrate comprises a stack of two or more lenses, each of the two or more lenses including a polyethylene terephthalate (PET) film, a hard coat on a first side of the PET film, and an adhesive layer on a second side of the PET film opposite the first side. The stack of two or more lenses may have a modulation transfer function that exhibits a contrast value greater than 75% for a spatial resolution of one line-pair per 0.0003 radians at 65 degrees angle of incidence. Heat and pressure may be applied to conform the stack of two or more lenses to the shape of the curved substrate.

The invention discloses a hybrid gradient fiber composite bulletproof laminated plate and a preparation method thereof, and belongs to the technical field of composite target plates. The preparation method comprises the following steps: coating the surface of each aramid fiber cloth laminated layer with waterborne polyurethane, and sequentially performing drying and tailoring forming to obtain a plurality of tailored and formed aramid fiber cloth composite layers; respectively cutting and forming the plurality of ultra-high molecular weight polyethylene fiber non-woven fabric laminated layers; and sequentially carrying out staggered stacking, wrapping, mold embedding and hot press molding on the waterborne polyurethane layers in the multiple tailored and molded ultra-high molecular weight polyethylene fiber non-woven fabric laminated layers and the multiple tailored and molded aramid fiber cloth composite layers, so as to obtain the hybrid gradient fiber composite bulletproof laminated plate. The interface bonding between the aramid fiber cloth and the ultra-high molecular weight polyethylene non-woven cloth in the hybrid gradient fiber composite bulletproof laminated plate is firm, and the hybrid gradient fiber composite bulletproof laminated plate has good energy absorption and blunt impact resistance effects and good bulletproof performance.

A protective lens stack comprises a base layer including a polyethylene terephthalate (PET) film containing a UV blocking additive and one or more removable lens layers stacked on top of the base layer. Each of the removable lens layers may include a PET film and a first adhesive disposed on a bottom surface of the PET film. Refractive indices of the base layer and the one or more removable lens layers may be matched to within 0.2. Each layer of the protective lens stack, including the base layer and each of the removable lens layer(s), may have less than 0.5% haze. The protective lens stack may be used as a face shield or may be surface mountable using a second adhesive disposed on a bottom surface of the PET film containing the UV blocking additive.

The invention provides a transparent bulletproof ceramic composite structure with an electric heating function and a preparation method of the transparent bulletproof ceramic composite structure. The composite structure comprises an anti-splashing layer (1), a first middle layer film (2), a multi-layer stacked structure (3) of glass sheets and films, a first transition layer (4), an electric heating film layer (5), a second transition layer (6), a ceramic layer (7), a first antireflection film layer (8), a second antireflection film layer (9), a third antireflection film layer (10), a second middle layer film (11), an inorganic glass layer (12), a third transition layer (13) and an anti-static layer (14) which are arranged in sequence. The composite structure provided by the invention has excellent impact resistance and bulletproof grade, can effectively resist the damage of high-speed elastic sheets or impact objects, and meets the requirements of high-safety application scenes such as weapon armors, armed airplanes and high-speed trains; and the anti-static film has clear optical observation capability, high transmissivity and anti-static property.

The invention discloses a preparation method of a bidirectional auxetic honeycomb anti-explosion protection structure and a bending and welding integrated structure, and belongs to the technical field of metamaterial structure design. The structure comprises an upper panel and a lower panel, wherein a first bending plate, a second bending plate and a bending connecting plate are arranged between the upper panel and the lower panel; the first type of bending plates are symmetrically spliced and combined with the bending connecting plates to form concave hexagonal cell elements; the first bending plate and the second bending plate are spliced and combined to form a double-arrow cell element; the sandwich structure is formed by adopting concave hexagonal cell elements and double-arrow cell elements which are arranged at intervals in a crossed manner in the horizontal direction, and the adjacent double-arrow cell elements are symmetrical along the middle concave hexagonal cell element; and the second bending plates in the double-arrow cell elements are spliced with the concave parts of the first bending plates in the concave hexagonal cell elements. The structure combines two structural characteristics of the concave hexagonal honeycomb and the double-arrow honeycomb, has bidirectional negative Poisson's ratio performance and higher bidirectional bearing capacity, and has a higher capacity absorption effect when subjected to explosion impact.

The invention relates to the technical field of protection equipment, and discloses a spliced bulletproof plugboard and a preparation method thereof.The spliced bulletproof plugboard comprises a first aramid sheet layer, a ceramic plate layer, a second aramid sheet layer and a polyethylene plate layer which are sequentially arranged in the direction from a bullet facing face to a bullet backing face; the ceramic plate layer comprises a ceramic plate and a long fiber layer circumferentially wrapping the side face of the ceramic plate, and the ceramic plate is formed by bonding and splicing a plurality of ceramic blocks. According to the invention, the plurality of ceramic blocks are bonded and spliced into the ceramic plate, and meanwhile, the circumferential side edge of the ceramic plate is wrapped by the long fiber layer to form circumferential constraint, so that the constraint rigidity between the spliced ceramic blocks can be effectively improved, and further, the ceramic close to a striking point is effectively prevented from shifting or being separated from the adjacent layer; the multiple resistance and the side edge protection performance of the bulletproof inserting plate are improved, and deformation and sinking at the moment of bouncing are reduced.

A cover for a seating and / or cargo area and doors of a vehicle includes front, middle and rear panels or portions. Door panels are attached to an upper portion of left and right sides of the front panel. Left and right front straps are spaced apart and attached to the front panel. Rear straps are attached to the rear panel. Window inserts are attachable to the left and right side door panels. For vehicles having fold-up seats, the cover may include a rear panel having independently foldable first, second, and optionally third sections attached by a zipper, and split seat top clips on opposite sides of the zipper. First and second top seats straps are attached on opposite sides of the rear panel. The fold-up seats, which may be split or un-split seats, may be folded up or down, without displacing or removing the cover.

A thermal runaway fireproof composite material. The thermal runaway fireproof composite material comprises a ceramic silicone rubber layer and a glass fiber cloth layer. The porosity of the composite material is less than or equal to 0.5 and greater than 0 after ablation at 800°C for 30 min, and the crosslinking degree of the ceramic silicone rubber layer is 2×10-4 to 2×10-2 mol / cm3. The thermal runaway fireproof composite material has good flexibility before burning by a high-temperature flame, and can be fully attached to a battery cell; in addition, a hard and compact ceramic layer can be formed after burning by the high-temperature flame, so that the thermal runaway fireproof composite material has good fireproofing performance.

The application relates to the field of chemical-proof fabrics, and particularly discloses a flame-retardant chemical-proof fabric and a preparation process thereof. The flame-retardant chemical-proof fabric comprises, from outside to inside, an outer layer, a bonding layer, a framework layer, a bonding layer and an inner layer which are sequentially contacted, the outer layer is a barrier layer, the inner layer is a barrier layer or an adsorption layer, the framework layer is selected from at least one of a composite fabric of aramid fiber / polyimide fiber, a basalt fiber cloth, a glass fiber cloth, a flame-retardant polyester cloth and a flame-retardant acrylic fiber cloth, the barrier layer is selected from at least one of a PVC / TPU composite film, a PVC film, a PTFE film, a PE film, silicone rubber, fluororubber, butyl rubber, chloroprene rubber and natural rubber, and the adsorption layer comprises a mixed fabric layer formed by nylon fiber and polyester fiber containing an adsorption material. The flame-retardant protective fabric has the advantages of high flame-retardant capacity, good chemical-proof effect, excellent puncture resistance and tensile resistance, can absorb moisture and sweat, and is comfortable to wear.

A composite material includes a plurality of polypropylene sheet layer unit groups that are sequentially stacked; each polypropylene sheet layer unit group comprises at least one of the same or different polypropylene sheet layer units, the structure of each polypropylene sheet layer unit is BiAiB′i; the structure of the polypropylene composite material is . . . i-th group, . . . second group, first group, second group, . . . i-th group, . . . ; the melting point of polypropylene composition Ai is greater than the melting point of polypropylene compositions Bi and B′i; and the average value of the melting points of all outer layers in the i-th group is greater than the average value of the melting points of all outer layers in an (i-1)th group. The polypropylene composite material has a very good tensile property and very good impact resistance, and also has good interlayer stripping strength at a relatively low hot-pressing temperature.

The invention provides a bulletproof structure and a preparation process thereof. The bulletproof structure comprises a ceramic layer plate, a titanium alloy layer plate, an aramid fiber layer plate, an ultra-high molecular weight polyethylene layer plate and a honeycomb heterogeneous anti-impact layer which are sequentially stacked, the ceramic layer plate and the titanium alloy layer plate, the titanium alloy layer plate and the aramid fiber layer plate, and the aramid fiber layer plate and the ultra-high molecular weight polyethylene layer plate are connected through a large-surface-density polyurethane resin adhesive film; wherein the ceramic laminate is made of nano modified B4C ceramic or nano modified TiB2 ceramic. The impact resistance of the base body can be improved, incoming projectiles are partially eroded and decomposed in the residence stage of the ceramic plate, then a large number of cracks are formed on the surfaces, conical fracture failure is achieved, bullet energy is decomposed greatly, the projectiles are eroded to deform and break, high temperature of combustion of the projectiles is blocked, and the impact resistance of the ceramic plate is improved especially for large-momentum and high-invasion-force projectiles. The invention particularly relates to a 12.7 mm armor-piercing combustion bomb and a kinetic energy warhead below.

The present invention relates to the technical field of fire-fighting composite fabrics, and discloses a processing technology for highly flame-retardant, high-temperature-resistant, and highly breathable firefighting suit protective fabrics. The outer layer of the firefighting suit protective fabric adopts a high-temperature flame-retardant layer fabric made of nitrogen-phosphorus composite flame-retardant fibers. Through the synergistic effect between the various components, a dense carbon layer can be formed when a fire occurs to delay combustion. Nano-silicon dioxide aerogel is added to the composite adhesive of the inner layer to further block heat transfer. A comfort layer fabric blended with menthol-modified bamboo fiber and spandex fiber is composited with the composite adhesive by spraying the adhesive in a diamond lattice. The fabric has uniform breathable pores, can bring a continuous cool feeling, is highly comfortable to wear, and effectively promotes sweat discharge. The prepared firefighting suit protective fabric has excellent flame retardancy, high-temperature resistance, and breathability, and can meet the use requirements in various environments.

The present disclosure relates to flame retardant laminates that can be used to make flame retardant textiles and flame retardant garments. The laminates described herein allow the use of non-flame retardant textiles to produce the flame retardant laminates. This use of non-flame retardant textile can provide laminates that can be much lighter in weight, more comfortable against the skin, more breathable, more durable, produced in a wider array of colors, have better moisture management properties, mechanical strength, and more environmentally friendly than flame retardant laminates that use inherently flame retardant textiles.

The invention discloses an explosion-proof membrane capable of being quickly shaped and a preparation method of the explosion-proof membrane. The explosion-proof membrane comprises a base material layer, an energy dissipation layer, a self-healing layer and a self-adhesive layer which are sequentially compounded, the base material layer is a high-transmittance polyester base material with shape memory performance; the energy dissipation layer is located on the outer side of the base material layer and is of a gradient modulus structure. The self-healing layer is located on the outer side of the energy dissipation layer, and the self-healing layer is a low-modulus acrylate polymer matrix; the self-adhesive layer is located on the inner side of the base material layer. According to the method, the site construction period is shortened from the hour level to the minute level, the adaptability to the hyperboloid car window or dome daylighting roof complex special-shaped base is improved, and rapid shaping is achieved.

The present invention relates to a reinforcement member made from a polymeric material. The present invention further relates to a vehicle comprising the reinforcement member, a method to absorb an impact on vehicle and a method to produce the reinforcement member.

The invention discloses ultra-high molecular weight polyethylene composite stab-resistant cloth and a preparation method and application thereof, and relates to the technical field of stab-resistant cloth, and the preparation method comprises the following steps: S1, preparing a binder solution; and S2, dipping the ultra-high molecular weight polyethylene non-woven fabric in the binder solution, taking out the ultra-high molecular weight polyethylene non-woven fabric, coating the surface of the base fabric with a layer of dispersion liquid containing negative expansion nanoparticles, and drying the base fabric to obtain the composite base fabric. The negative expansion layer is formed on the base cloth, so that the negative expansion layer is more compact during hot pressing or can be more tightly filled between the non-woven cloth, the porosity of the base cloth is reduced, larger resistance is formed, and the puncture-proof effect of the base cloth is greatly improved; meanwhile, the polyisoprene fibers with thermal shrinkage and cold expansion are further added, the toughness of the coating is improved, a complex network structure can be formed by the polyisoprene fibers and the nano-particles, certain space resistance can also be formed, and the puncture-proof effect is improved.

The present application discloses a protective plate, comprising: a metal plate; a glass fiber reinforced resin layer, the glass fiber reinforced resin layer comprising a first glass fiber reinforced resin layer and a second glass fiber reinforced resin layer, the first glass fiber reinforced resin layer being located on one side of the metal plate, and the second glass fiber reinforced resin layer being located on a side of the metal plate away from the first glass fiber reinforced resin layer; a carbon fiber reinforced resin layer, the carbon fiber reinforced resin layer comprising a first carbon fiber reinforced resin layer and a second carbon fiber reinforced resin layer, the first carbon fiber reinforced resin layer being located on a side of the first glass fiber reinforced resin layer away from the metal plate, and the second carbon fiber reinforced resin layer being located on a side of the second glass fiber reinforced resin layer away from the metal plate; the glass fiber reinforced resin layer and the carbon fiber reinforced resin layer sealing the metal plate; the metal plate, the glass fiber reinforced resin layer and the carbon fiber reinforced resin layer satisfying the following conditions:

A vehicle is wrapped by an adhesive film which is then slit by applying first tape to the vehicle having a longitudinally extending filament carried by the tape at a position spaced from the side edges. A second tape is applied over the film at the first tape body so as to bridge to each side of the filament and pulling the filament so as to tear through the film and the first ad second tapes body with the second tape applying a force to the film acting to reduce tendency of the film to pull away from the object during the cutting by the filament as the filament is pulled.

Provided are a multilayered body and a dust-proof cover for a head-up display, said dust-proof cover using said multilayered body. The multilayered body has a substrate layer and an infrared ray absorption layer, wherein the infrared ray absorption layer includes an ultraviolet ray-curable resin and a tungsten oxide, the ultraviolet ray-curable resin includes a component derived from a multifunctional (meth)acrylate with a weight average molecular weight of 1000 or greater, and the percentage of the tungsten oxide in the infrared ray absorption layer is 25-50 mass%.

Polypropylene-based multilayer film, which is biaxially oriented, process for manufacturing biaxially oriented multilayer film and its use in flexible packaging.

In a first aspect, an article includes an inorganic substrate and a polymer film layer. The inorganic substrate includes a material including a ceramic, a glass, a glass-ceramic or a mixture thereof. The material includes a metal cation selected from the group consisting of silicon, aluminum, titanium, zirconium, tantalum, niobium and mixtures thereof and oxygen. The polymer film layer includes a polymer including an imide group. From an interface where the inorganic substrate contacts the polymer film layer, a line-profile of a CNO− signal from negative secondary ion mass spectroscopy decreases as it moves away from the interface and into the bulk of the polymer film layer.

Lightweight ballistic glasses are provided that provide effective protection from ballistic attack while also being lightweight enough for use in armored vehicles and aircraft. In addition to other embodiments, a multilayered lightweight ballistic glass is provided that meets the CEN 1063 Level BR7 standard while having a weight of no greater than about 155 kilograms per square meter (kg / m2), and a total thickness of less than about 75 mm.

Provided in an aspect of the present invention is a transparent laminate (10) including a functional layer (12) and a low-refractive-index layer (13) having a refractive index lower than the refractive index of the functional layer (12), wherein the surface (13A) of the low-refractive-index layer (13) is the surface (10A) of the transparent laminate (10), the surface (10A) of the transparent laminate (10) is not fogged as tested in an anti-fogging ability test, and the absolute value ΔY1 of a difference in the luminous reflectance Y of the surface (10A) of the transparent laminate (10) between before and after the anti-fogging ability test is 0.2% or less.

Embodiments of the present invention replace at least some flame retardant fibers (e.g., aramid fibers) in wadding traditionally used for thermal insulation liners with thermally stable polyamide fibers (e.g., nylon fibers). The TPP performance of garments incorporating thermal liner embodiments encompassed herein is comparable to garments formed with conventional thermal liners, even without being improved.

Reinforced surgical table mattresses or pads and methods of manufacture are disclosed. A layer of polymeric foam can be inserted into a shell formed from one or more sheets of flexible polymeric film material laminated to a fabric and welded together to create a water-proof shell. At least one layer of hotmelt glue film can be positioned inside the shell between the bottom side of the foam and the fabric of the shell. Heat can be applied to the outside of the shell at a temperature above the melting point of the hotmelt glue film and below that of the shell material, melting the glue film and bonding the fabric of the shell to an adjacent layer of material when cooled.

To provide a spun-bonded nonwoven fabric which is excellent in pleating processability and shape retention, excellent in air permeability, and suitable for imparting functionality, there is provided a spun-bonded nonwoven fabric including composite fibers containing, as constituent components, a polyester-based resin P1, and a thermoplastic resin P2 having a melting point lower by 20°C or more than the melting point of the polyester-based resin P1, in which at least a part of a surface of the composite fibers is the thermoplastic resin P2, at least some of the contact points between fibers of the composite fibers have a micro bonding area having a length of 5 µm or more and 100 µm or less in a fiber axis direction, an average single-fiber diameter of the composite fibers is 15.0 µm or more and 40.0 µm or less, and an average center-to-center distance between nearest neighbor fibers in a cross section in a transverse direction of the spun-bonded nonwoven fabric is 50 µm or less.