3631results about "Rubber layered products" patented technology

A pickleball paddle for reducing the acoustic signature caused by striking a ball and for reducing the vibrations felt by a user is presented. A pickleball paddle includes a core having first and second sides, an outer edge between the first and second sides, and holes extending through the core from the first side to the second side. The pickleball paddle also includes a first laminate layer coupled to the first side. The paddle further includes a second laminate layer coupled to the second side. The paddle also includes fibers that respectively extend through at least one of the holes, the fibers being coupled to the first and second laminate layers.

The invention provides a flame-retardant heat-insulating fabric for fire-fighting clothes and a preparation process thereof, and belongs to the technical field of fire-fighting fabrics. The preparation process comprises the following steps: preparing coated modified ammonium polyphosphate; modified expanded perlite; preparing a flame-retardant outer-layer fabric; preparing a heat insulation core layer fabric; preparing an antibacterial inner layer fabric; and bonding. The flame-retardant heat-insulating fabric for the fire-fighting clothes comprises a flame-retardant outer-layer fabric, a heat-insulating core-layer fabric and an antibacterial inner-layer fabric, ammonium polyphosphate is dispersed in deionized water, polyethyleneimine is added under the acidic condition, amino on the polyethyleneimine and ammonia ions of the ammonium polyphosphate are subjected to an ion exchange reaction, and the flame-retardant heat-insulating fabric for the fire-fighting clothes is obtained. According to the flame-retardant outer-layer fabric, ammonium polyphosphate is preliminarily coated, then a hydroxyethylidene diphosphonic acid solution is added for a salt forming reaction, coated modified ammonium polyphosphate with a core-shell structure is prepared, the coated modified ammonium polyphosphate and polyester powder are mixed and granulated, then the flame-retardant outer-layer fabric is prepared, and the flame-retardant property of the flame-retardant outer-layer fabric can be effectively improved.

To provide a composition for a transmission belt having excellent adhesiveness to a core material.SOLUTION: There is provided a composition for a transmission belt which comprises (B) a copolymer containing a structural unit [b1] derived from ethylene, a structural unit [b2] derived from an α-olefin having a carbon number of 3 to 20, a structural unit [b3] derived from a non-conjugated polyene containing only one cyclic olefin structure or vinyl group structure in the molecule and a structural unit [b4] derived from a non-conjugated polyene containing a total of two or more cyclic olefin structures or vinyl group structures in the molecule, (A) a copolymer containing a structural unit [a1] derived from ethylene, a structural unit [a2] derived from an α-olefin having a carbon number of 4 to 20 and a structural unit [a3] derived from a non-conjugated polyene (provided that the copolymer (B) is excluded), (C) zinc oxide, (D) a cyclohexylamine salt of 2-mercaptobenzothiazole and (E) a sulfur compound-based crosslinking agent.SELECTED DRAWING: None

The invention belongs to the technical field of sole materials, and particularly discloses an anti-skid sole material and a preparation method thereof. The anti-skid sole material comprises a sole body, the sole body comprises an anti-skid layer and a rubber layer, and the anti-skid layer comprises the following raw material components in parts by weight; comprising 50-55 parts of polyurethane, 16-20 parts of a silicon carbide composite material, 10-14 parts of polyethylene composite fibers, 4-8 parts of a maleic anhydride grafted polyethylene octylene co-elastomer, 3-5 parts of a silane coupling agent, 1-2 parts of an antioxidant and 0.5-0.8 part of a lubricant. The anti-skid sole material prepared in the invention has excellent mechanical strength, skid resistance and wear resistance, and can provide protection for feet and prolong the service life of soles.

The invention relates to the field of waterproof sealing materials, and discloses a composite high-weather-resistance rubber waterstop which is composed of an outer layer, a middle layer and an inner layer. The outer layer contains 3%-8% of nano titanium dioxide, 2%-5% of nano zinc oxide, 50%-70% of a rubber matrix and 1%-3% of an ultraviolet light absorber, and the total proportion of the outer layer is 10%-20%. The middle layer is composed of 70%-85% of EPDM, 5%-10% of carbon fiber and 5%-10% of plasticizer, and the total proportion of the middle layer is 60%-75%. The inner layer is a dynamic covalent bond rubber material and contains 5%-10% of a vulcanizing agent and 1%-3% of an antioxidant, the rubber material accounts for 80%-90%, and the inner layer accounts for 15%-25% in total. Through a multi-layer composite structure, a dynamic covalent bond self-repairing material and an optimized vulcanization process, the comprehensive performance of the water-stop belt is remarkably improved, and particularly the durability and the service life of the water-stop belt in a long-term exposure environment are improved.

The invention discloses an energy-saving and environment-friendly polyarylate fabric whole-core flame-retardant conveying belt and a manufacturing method thereof. The energy-saving and environment-friendly polyarylate fabric whole-core flame-retardant conveying belt comprises a polyarylate fabric whole belt core, a covering layer and a belt core dipping sizing material, the covering layer comprises the following components: solution polymerized styrene-butadiene rubber, a styrene-butadiene-styrene block copolymer, a thermoplastic polyurethane elastomer, zinc oxide, stearic acid, sulfur, an accelerant, an anti-aging agent, carbon black, a hybrid flame-retardant composite material, a phosphate flame retardant, paraffin oil and an antistatic agent; the covering layer of the energy-saving and environment-friendly polyarylate fabric whole-core flame-retardant conveying belt prepared by the invention is compounded from white carbon black, expanded graphite, diethyl aluminum hypophosphite and dimethyl imidazole zinc, and is subjected to surface treatment through polyacrylamide; and then the styrene-butadiene-styrene block copolymer is used for carrying out macromolecular modification on the hybrid flame-retardant composite material, so that the prepared conveyor belt has excellent flame-retardant and antistatic properties, environment-friendly properties, low rolling resistance and mechanical properties.

A sealing device includes a polymeric carrier layer having a first and a second major surface and a first functional layer including 25-95 wt.-% of at least one polymer P1 and 5-75 wt.-% of at least one solid filler F, wherein the polymeric carrier layer has a thickness of 10-450 μm and wherein the sealing device has a mass per unit area of not more than 450 g / m2. A method produces a sealing device, and a sealing device is used as a waterproofing membrane, vapor barrier, vapor retarder, gas barrier membrane, volatile organic compound (VOC) barrier membrane, or as a geomembrane.

To provide a composition for a transmission belt having excellent adhesiveness to a core material.SOLUTION: There is provided a composition for a transmission belt which comprises (B) a copolymer containing a structural unit derived from ethylene, a structural unit derived from an α-olefin having a carbon number of 3 to 20, a structural unit derived from a non-conjugated polyene containing only one cyclic olefin structure or vinyl group structure in the molecule and a structural unit derived from a non-conjugated polyene containing a total of two or more cyclic olefin structures or vinyl group structures in the molecule, (A) a copolymer containing a structural unit derived from ethylene, a structural unit derived from an α-olefin having a carbon number of 4 to 20 and a structural unit derived from a non-conjugated polyene, (C) zinc oxide, (D1) a paraffin-based process oil, (D2) an aromatic process oil and (E) a crosslinking agent.SELECTED DRAWING: None

The invention discloses a plant leaf biomimetic material with antifouling, self-cleaning and spectrum simulation properties and a preparation method thereof. The plant leaf biomimetic material sequentially comprises a first liquid injection super-smooth porous elastomer layer, a hydrogel layer, a camouflage yarn-dyed fabric layer, a hydrogel layer and a second liquid injection super-smooth porous elastomer layer from bottom to top, the liquid injection super-lubricity porous elastomer layer is a porous elastomer of which gaps are filled with silicone oil; the first and second liquid injection super-lubricity elastomer layers are made of the same or different materials; the hydrogel layer is one of single-network hydrogel or double-network hydrogel; and the color of the disguise yarn-dyed fabric layer is one of dark green, medium green, yellow green and light green. The plant leaf biomimetic material disclosed by the invention is excellent in plant leaf spectrum simulation effect, can simulate cell tissues of plants, has anti-mud and hydrophobic properties, can still keep the excellent plant leaf spectrum simulation effect after being washed by rainwater, and can realize high-weather-resistance spectrum simulation.

Point bonded extrusion laminates (PEL) are provided. The PELs include at least a first nonwoven layer and an elastic film that have been laminated together via a first plurality of discrete bond sites bonding the first nonwoven layer to a first side of the elastic film. The first plurality of discrete bond sites define a first bonded area and a first bond pattern between the first nonwoven layer and the first side of the elastic film. The PELs also include first nonbonded portions of the first nonwoven layer located between the first plurality of discrete bond sites, in which the first nonbonded portions of the first nonwoven layer are not bonded to the first side of the elastic film.

An improved Type C air conditioning hose is provided that meets or exceeds SAE J2064 and J3062 requirements, offers good flexibility and fracture resistance, and exhibits improved permeation ratings for refrigerants including R134a and R1234yf. The multilayer type C barrier air conditioning hose includes an inner elastomeric tube layer capable of direct bonding to plastic without an intervening adhesive. The inner elastomeric layer is prepared from a first elastomeric composition comprising a blend of an ethylene propylene diene terpolymer rubber (EPDM) and a chloroprene rubber (CR), phenylenedimaleimide, and a maleated compound.

The present invention relates to an elastomeric laminate comprising at least two adjacent layers, wherein: the rubber composition constituting the first layer is based on 20 phr to 100 phr of at least one copolymer comprising ethylene units and 1,3-diene units of formula CH2=CR-CH=CH2, the ethylene units in the copolymer representing more than 50 mol% of the copolymer monomer units, and the symbol R represents a hydrocarbon chain having 3 to 20 carbon atoms, 0 phr to 80 phr of at least one diene elastomer having a diene unit weight concentration greater than 50%, 10 phr to 100 phr of a plasticizing system comprising at least one plasticizing resin having a glass transition temperature higher than 20°C and / or at least one plasticizer which is liquid at 23°C, and a reinforcing filler, and a crosslinking system; the rubber composition constituting the second layer is based on a diene elastomer having a diene unit weight concentration greater than 50% and a crosslinking system. The present invention also relates to a rubber article, in particular a pneumatic or non-pneumatic tire, comprising such a laminate.

The present application relates to a pickleball racket. The pickleball racket includes a racket main body and a handle. The handle is connected to one side of the racket main body. The racket main body includes a carbon fiber layer, a glass fiber layer, an EVA layer and a PP honeycomb layer, which are arranged in a stacked manner. The PP honeycomb layer has a honeycomb slot structure. In this embodiment, due to high strength and rigidity of a carbon fiber material, the carbon fiber layer can be provided to improve the stability and durability of the racket. The pickleball racket in the present application can absorb and reduce the vibration and impact generated in the event of collision of the racket with a ball, thereby greatly reducing the noise, and also reducing a force on the hand, and improving a shock-absorbing effect of the racket.

The high-performance insulation blanket comprises a surface layer, an EVA adhesive layer and a surface layer which are sequentially arranged, and the surface layer and the EVA adhesive layer are attached in a calendering mode; the surface layer is prepared from the following raw materials in parts by weight: 45 to 55 parts of ethylene-vinyl acetate copolymer, 10 to 20 parts of natural rubber, 8 to 18 parts of PA6 short fiber, 7 to 10 parts of dopamine modified mica powder, 6 to 10 parts of MAH-g-EVA, 10 to 15 parts of flame retardant, 0.2 to 0.4 part of antioxidant, 0.8 to 1.2 parts of lubricant and 2 to 4 parts of coloring agent. In the surface layer formula system, under the synergistic effect of the natural rubber, the PA6 short fiber and the dopamine modified mica powder, the tear resistance and puncture resistance of the material are greatly improved, and meanwhile, the material has excellent comprehensive properties such as high temperature resistance, insulation, flame retardance and aging resistance, and is suitable for the field of high-requirement insulation protection.

Provided is a sealant film for laminates that has excellent heat resistance, low-temperature sealing properties and impact resistance. [Solution] A sealant film for laminates to be used with a polypropylene content of 80% by mass or more, the sealant film for laminates comprising at least a first layer located on one surface of the laminate and a second layer in contact with the first layer, the first layer comprising a first matrix resin component and a first dispersed component at 51% by mass or more and 90% by mass or less, and having a sea-island structure with the first dispersed component dispersed in the first matrix resin component, the second layer comprising a second matrix resin component and a second dispersed component at 51% by mass or more and 85% by mass or less, and having a sea-island structure with the second dispersed component dispersed in the second matrix resin component, the first matrix resin component comprising a propylene-ethylene random copolymer, the first dispersed component comprising 5% by mass or more of polyethylene, the second matrix resin component comprising a block polypropylene, and the second dispersed component comprising 5% by mass or more of polyethylene.

The invention relates to the technical field of shock absorption and seismic resistance of buildings, in particular to a modular plate type viscoelastic damper and a preparation method thereof. The modular plate-type viscoelastic damper comprises a rigid connecting layer, a viscoelastic damping layer and a rigid connecting layer which are sequentially arranged from top to bottom. The viscoelastic damping layer is made of a viscoelastic damping material; the viscoelastic damping material is prepared from the following raw materials in parts by mass: 60 to 100 parts of halogenated butyl rubber, 0 to 40 parts of polar rubber, 15 to 50 parts of tackifying resin, 50 to 200 parts of polyisobutene, 40 to 150 parts of filler, 1 to 8 parts of anti-aging agent, 0 to 20 parts of plasticizer and 0 to 8 parts of antioxidant. The modular plate-type viscoelastic damper is formed by curing at room temperature after the rigid connecting layer and the viscoelastic damping layer are attached, has the advantages of being simple in production process, environmentally friendly, free in splicing, easy to install and the like, has excellent energy dissipation capacity and restorability, and can be used in an infilled wall.

The invention belongs to the technical field of protection. The invention provides a D3O-based protective layer structure and a preparation method thereof. The D3O-based protective layer structure comprises an inner layer, an inner tube bundle layer and an outer layer which are sequentially arranged in parallel from bottom to top, the inner layer comprises a polyester fabric and an organic silicon resin based nano titanium boride and titanium carbide composite coating coated on the polyester fabric; the internal honeycomb-shaped tube bundle layer comprises a honeycomb-shaped frame body formed by a thermoplastic elastomer and a filler filled in the frame body, and the filler is a D30 material; and the outer layer is a butyl rubber layer. The single protective property of a traditional protective layer is changed, the performance of multiple composite materials is combined, the protective layer with multiple functions of wear resistance, softness, hardness, elasticity and the like is formed, and the protective layer has the performance of dispersing impact force, absorbing and buffering impact kinetic energy and preventing friction and can be applied to preparation of facilities or protective tools directly facing human body protection and the like.

The invention relates to the technical field of waterproof coiled materials, and provides a macromolecule waterproof coiled material with a hook-and-loop fastener and a preparation method thereof.The macromolecule waterproof coiled material with the hook-and-loop fastener sequentially comprises the hook-and-loop fastener, a macromolecule sheet layer, a blocking layer, an upper gluing waterproof layer, a film-based macromolecule layer, a lower gluing waterproof layer and an anti-sticking layer from top to bottom; the upper adhesive waterproof layer and the lower adhesive waterproof layer are both modified self-adhesive asphalt sizing materials, and the modified self-adhesive asphalt sizing materials comprise asphalt, softening agents, styrene-butadiene-styrene block copolymers, butadiene styrene rubber, butyl rubber, tackifying resin, desulfurized rubber powder, filler and compatilizers. The filler is prepared from the following raw materials: carbon black, silicon dioxide, a silane coupling agent and 5-methylphenol-2-calcium sulfonate; the hook-and-loop fastener is a hook-and-loop fastener, the hook-and-loop fastener comprises a hook-and-loop fastener hook surface layer and a hook-and-loop fastener loop surface layer, and by means of the technical scheme, the problem that in the prior art, the high polymer waterproof roll is low in peel strength is solved.

The invention relates to the technical field of flame-retardant conveying belts, in particular to a preparation method of a high-wear-resistance flame-retardant environment-friendly graphene / basalt fiber / rubber composite material and a laminated conveying belt prepared through the preparation method. The preparation method mainly comprises the following steps: (1) preparing functionalized graphene and basalt fiber particles; and (2) preparing the graphene and basalt fiber / rubber composite material. The graphene and the basalt fiber are compounded and used in the belt core framework material, the core rubber and the cover rubber of the conveying belt, so that the conveying belt has the characteristics of high strength, high modulus, high temperature resistance, difficulty in deformation, environment friendliness, flame retardance and static electricity resistance, and the application requirements of the rubber conveying belt in different use environments are met.

In a foldable display device, stretchability is given to an outermost area of the folding area of the first support substrate to which a relatively high stress is applied. Thus, the folding radius at the outermost area increases, which relatively reduces the stress at the outermost area. Accordingly, it is possible to suppress occurrence of cracks in the outermost area.

The invention discloses a waterproof heat-insulation flame-retardant multi-component composite material capable of preventing high-temperature scald, which comprises a cylindrical heat-insulation protective material capable of surrounding a local trunk or limbs of a human body in an enclosure shape, and the cylindrical heat-insulation protective material sequentially comprises an outer protective layer, a heat-insulation layer, a breathable transition layer, a heat absorption functional layer and a comfortable inner layer from outside to inside; the heat insulation capability is improved; meanwhile, the comfort is considered.

A preparation method of an explosion-proof thickened wear-resistant rubber and plastic pipe belongs to the field of rubber and plastic pipes, the explosion-proof thickened wear-resistant rubber and plastic pipe comprises an inner layer, a middle layer and an outer layer, the inner layer is an ultrahigh wear-resistant composite layer, is compounded by polytetrafluoroethylene and polyimide, and is reinforced by nanoscale silicon carbide particles and graphene; the middle layer is an anti-explosion energy absorption layer, a shape memory polymer is combined with crosslinked polyethylene to form an intelligent material capable of responding to pressure change, and a high-strength aramid fiber and carbon fiber composite material is embedded into the middle layer; the outer layer is an anti-explosion impact barrier layer, nano ceramic reinforced silicone rubber is adopted, and ultra-high molecular weight polyethylene is combined with ceramic particles, so that the high pressure resistance and the explosion resistance are improved. The inner layer adopts the high-performance material and the nano reinforced filler, so that the wear resistance is remarkably improved; a self-repairing coating technology is introduced into the outer layer, automatic healing of local damage is achieved through a microcapsule structure, the service life of the product is prolonged, and the maintenance cost is reduced.

The present disclosure provides an improved decorative article that may be used as a decorative flooring panel. The decorative article comprises a laminated structure having a core layer and a top layer. The core layer includes separate upper and lower sections with different compressibility resistances, such that the upper section of the core layer exhibits a lower compressibility resistance than the compressibility resistance of the lower section. In some embodiments, for example, the upper and lower sections of the core layer may be foamed layers having different porosities and densities. In some disclosed embodiments, the top layer above the core layer may comprise a coating, a wear layer, and a decor layer. According to some embodiments, a plurality of holes may extend through the top layer, or through only a portion of the top layer, to further improve acoustic performance of the decorative article.

The invention relates to the technical field of composite films, in particular to a silica gel blister film as well as a preparation method and application thereof. The silica gel blister film comprises a silica gel layer and a polyethylene glycol terephthalate base film which are laminated up and down and compounded by hot pressing; the thickness of the silica gel layer is 0.2-0.3 mm, and the thickness of the polyethylene glycol terephthalate base film is 0.5 mm. According to the silica gel plastic uptake film, the polyethylene glycol terephthalate base film is matched with the silica gel layer, the polyethylene glycol terephthalate base film is matched with functional auxiliaries such as the antibacterial agent and the flame retardant through polyethylene glycol terephthalate, the functional effect of a film product is optimized, meanwhile, the filler modifier and the balance adjusting agent are added, and the filler modifier and the balance adjusting agent are matched in a coordinated mode and jointly achieve a synergistic effect, so that the antibacterial and flame-retardant silica gel plastic uptake film is obtained. The product has the advantages of coordinated and balanced improvement of antibiosis, wear resistance and flame retardance, and remarkable corrosion resistance and thermocycling stability resistance.

The invention relates to a multi-layer sound absorption and insulation material and a preparation method thereof.The multi-layer sound absorption and insulation material comprises an inner micropore sound absorption layer, a vibration attenuation damping layer, a sound insulation plate layer, a main frame layer, a sound absorption material layer and an outer steel plate layer which are sequentially arranged from inside to outside, a plurality of hollow glass balls are evenly arranged in the main frame layer, and the sound absorption material layer is obtained by pressing multiple layers of composite sound materials; the composite acoustic material comprises the following raw materials in parts by weight: 10-15 parts of fibers, 4-8 parts of an adhesive, 3-8 parts of a foaming agent, 1-3 parts of a flame retardant, 10-20 parts of a plasticizer, 10-20 parts of resin, 1-3 parts of a lubricant, 5-10 parts of an organic sound absorber and 1-5 parts of an antioxidant. According to the sound absorption and insulation material, the inner micropore sound absorption layer, the vibration reduction damping layer, the sound insulation plate layer and other multi-layer structures are arranged from inside to outside, all the layers have a synergistic effect, sound wave propagation can be dealt with from multiple aspects, and the sound absorption and insulation material is suitable for various places with requirements for the acoustic environment, such as the fields of building sound insulation, industrial equipment noise reduction and the like.

The application discloses a multilayer fireproof material for a battery and a manufacturing method thereof, relates to the technical field of fireproof materials, and comprises a fireproof material base and a protective layer wrapped on the outer surface of the fireproof material base; the fireproof material base comprises a first glass fiber cloth layer, a ceramicized silicone rubber layer and a second glass fiber cloth layer from top to bottom; the multilayer fireproof material disclosed by the application has the advantages of remarkable fire-retardant and fireproof effects, good weather resistance and environmental protection performance, sufficient high-temperature flame impact resistance and good mechanical properties.

The utility model relates to the field of new energy, and discloses a battery bottom protection plate which comprises an impact release layer, a first fiber reinforced resin layer, a metal layer, an impact absorption layer and a second fiber reinforced resin layer, and the first fiber reinforced resin layer, the metal layer and the second fiber reinforced resin layer are all arranged between the impact release layer and the impact absorption layer. And the impact release layer, the first fiber reinforced resin layer, the metal layer, the second fiber reinforced resin layer and the impact absorption layer are laminated. The battery bottom guard plate has the beneficial effects that the battery bottom guard plate adopts the design concept of gradient energy absorption and has high impact resistance, and meanwhile, the multi-layer composite structure can be produced in different processes, so that the heat dissipation between layers is reduced, the interface bonding force is improved, the reliability of the bottom guard plate is improved, the protection function of the bottom guard plate is ensured, and the service life of the bottom guard plate is prolonged. And the battery pack can be well protected.

The invention relates to the technical field of packaging materials, and particularly discloses a stretching wrapping film and a preparation method thereof. The stretching and winding film comprises an upper-layer film and a lower-layer film; the upper-layer film is prepared from the following raw materials in parts by weight: 28 to 35 parts of MLLDPE and 3 to 6 parts of LMDPE; the lower layer film is prepared from the following raw materials in parts by weight: 30 to 40 parts of LLDPE (Linear Low Density Polyethylene), 5 to 8 parts of MDPE (Methylene Diphenyl Phenylene) and 55 to 70 parts of functional master batch; the functional master batch is prepared from the following raw materials: metallocene polyethylene, an elastomer, sodium polyacrylate modified talcum powder and a maleic anhydride grafted elastomer. The mechanical property and the processing property of the stretch wrapping film are improved through the upper-layer film made of the specific raw materials according to the specific ratio, the elasticity, the toughness and the tensile strength of the stretch wrapping film are improved through the lower-layer film made of the specific raw materials according to the specific ratio, and the mechanical property of the stretch wrapping film is remarkably improved through the functional master batch; and the dispersibility of the lower-layer film raw material and the thermal stability of the lower-layer film material are also improved.

A logo invisible slurry particle fabric and vamp structurally comprises a fabric bottom layer, a colored rubber layer is arranged on the upper end face of the fabric bottom layer, a positioning layer is arranged on the upper end face of the colored rubber layer, a fabric surface layer is arranged on the upper end face of the positioning layer, a plurality of display belts are arranged on the fabric surface layer at intervals, and the display belts form a grid-shaped structure. A plurality of filling holes are formed in the fabric surface layer, filling grooves connected with the filling holes are formed in the inner side of the display belt, transparent protruding blocks matched with the filling holes and the filling grooves at the same time are punched on the positioning layer, and a dot-matrix logo area is shown through a three-dimensional transparent grid-shaped structure on the fabric surface layer in an inner interlayer filling mode. The overall anti-deformation strength is improved, and meanwhile the stereoscopic impression of the invisible logo is improved.