35results about "Closed loop articles" patented technology

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 invention relates to the technical field of rubber conveying belts, and discloses a high-temperature-resistant flame-retardant chlorinated polyvinyl chloride plastic conveying belt. The conveyor belt aims at solving the problems that an existing rubber-based conveyor belt is poor in thermal stability, low in flame retardant efficiency and rapid in mechanical property attenuation in a high-temperature, open fire or thermal radiation environment. The tensile body is composed of an upper covering layer, a lower covering layer and a tensile body core layer. The covering layer is formed by blending and extruding chlorinated polyvinyl chloride resin, a heat stabilizer, a flame retardant synergist, a smoke suppressant, a plasticizer, a lubricant and an inorganic filler; and the core layer is formed by compounding and hot-pressing plasma-treated aramid fabric and chlorinated polyvinyl chloride dipping slurry. Through multi-component collaborative design, the conveyor belt keeps structural integrity and mechanical properties under long-term thermal exposure at 200 DEG C, the limit oxygen index is larger than or equal to 38% and reaches the UL94 V-0 level, and the conveyor belt is free of molten drops, low in smoke and low in toxicity, can be subjected to continuous thermoplastic forming and does not need vulcanization.

This invention belongs to the field of flame-retardant conveyor belt technology, specifically relating to an aramid core solid flame-retardant conveyor belt and its preparation method. The aramid core solid flame-retardant conveyor belt includes a cover rubber, a single layer of aramid fiber cloth, and an adhesive layer. The cover rubber, by weight, comprises: 90-110 parts rubber, 4-6 parts hydroxyl-containing epoxy resin, 35-45 parts modified filler, 10-20 parts flame retardant, 4-6 parts zinc oxide, 1-5 parts antioxidant, 1-5 parts accelerator, 1-3 parts sulfur, and 1-3 parts stearic acid. The rubber includes styrene-butadiene rubber, neodymium-based cis-butadiene rubber, natural rubber, and fluororubber. The aramid core solid flame-retardant conveyor belt provided by this invention exhibits excellent cold resistance, wear resistance, flame retardancy, hydrophobicity, and adhesive strength.

The invention discloses a preparation method of a self-lubricating composite belt, and belongs to the technical field of transmission conveying belts and running belts. Weaving base cloth by adopting a herringbone weaving method, weaving middle-layer cloth by adopting a plain weaving method, and respectively drying and shaping the cloth; coating the back surface of the base cloth with an adhesive, and then forming a shaped shock absorption layer through a casting process or a calendering process; coating the front and back surfaces of the middle-layer cloth with an adhesive, then overlapping the middle-layer cloth with the base cloth with the shaping shock absorption layer, and performing high-temperature pressurization compounding to form a primary belt body; forming a surface wear-resistant layer on the surface of the primary belt body through a tape casting process or a calendering process, and performing embossing treatment to obtain a composite belt base body; the surface of the base cloth of the composite belt base body is coated with a self-lubricating material, a self-lubricating coating is formed through heating permeation and cooling solidification, and the self-lubricating composite belt is prepared. Through unique self-lubricating material combination and structural design, the ultra-low friction coefficient, lifelong refueling-free and self-cleaning functions of the product are achieved, the service life of the product is remarkably prolonged, and the energy-saving performance of the product is remarkably improved.

A friction transmission belt includes a compression layer forming a pulley contact portion, the compression layer includes an inner layer formed from a rubber composition and an outer layer provided on a pulley contact side of the inner layer and formed from a fiber member, and a ratio (M10 modulus / M50 modulus) of an modulus at 10% elongation in a belt longitudinal direction (M10 modulus) to an modulus at 50% elongation in the belt longitudinal direction (M50 modulus), of the rubber composition, is not less than 1.5.

The present disclosure relates to an extruded industrial fabric. A method of manufacturing an industrial fabric is crosshead extrusion of a first layer of polymeric matrix material with a linear member. The crosshead extruded linear member with the polymer matrix material may be a continuous system oriented in the longitudinal direction. A layer of nonwoven material is provided on a surface of the first layer of polymeric matrix material, and a second layer of polymeric matrix material is extruded onto the layer of nonwoven material. A first layer of polymeric matrix material at least partially surrounds the linear feature. The front face of the industrial fabric may be smooth or may include a texture or pattern. The back side may be smooth (planar), have variable roughness, or include needled fibers incorporated into the structure of the fabric.

The invention discloses a high-holding bobbin accurate conveying composite material which comprises a center layer, an upper transmission layer and a lower transmission layer, the upper transmission layer and the lower transmission layer are located above and below the center layer, a high-holding material upper layer is arranged between the center layer and the upper transmission layer, and a high-holding material lower layer is arranged between the center layer and the lower transmission layer. The invention also discloses a preparation method of the composite material. According to the invention, the high holding material is added as a material for contacting and holding the bobbin, so that the bobbin chassis is stably held, the slipping phenomenon of the bobbin chassis and the conveying belt is avoided, the accurate conveying of the bobbin is realized, the repiecing and jointing efficiency of the automatic bobbin winder is improved, and the high-speed and high-efficiency performance of the intelligent bobbin winder is fully exerted.

A printed magnetic rip insert and system for monitoring conveyor belts using printed rip inserts is disclosed. The system includes: a plurality of printed rip insert elements on a substrate of a conveyor belt; a field generator for generating a magnetic field proximate the printed rip insert elements; and a detector for detecting an image of a magnetic field produced by the plurality of printed rip inserts.

The invention relates to the technical field of conveying belts, discloses a high-strength digital printing conveying belt of a multi-layer structure, and aims to solve the problem of pitch deviation caused by interface stress concentration, thermally induced size instability and creep deformation. The conveying belt is characterized by being sequentially provided with a transmission friction layer, a bottom bonding transition layer, a composite reinforcing framework layer, a stress compensation layer and a surface printing bearing layer from bottom to top. Wherein the framework layer adopts a high-modulus para-aramid fiber three-dimensional weaving structure, and the stress compensation layer is formed by compounding a tungsten phosphate zirconium filler with a negative thermal expansion characteristic and an elastomer. All the layers are integrated through chemical bonding or dipping treatment. According to the scheme, the longitudinal modulus and the dynamic thermal stability of the conveying belt are remarkably improved, thermally induced deformation and edge wrinkling are effectively restrained, and the registration precision of high-resolution printing is ensured.

The present disclosure provides an article. The article includes an adhesive layer with two opposing surfaces. The adhesive layer includes (i) a functionalized ethylene-based polymer having a melt index from 0.1 g / 10 min to 300 g / 10 min; (ii) from 0.01 wt % to 45 wt % of a functionalized hydrocarbon; (iii) a tackifier; and (iv) optionally, a crosslinking agent.

The application discloses a carbon fiber composite reinforced cover layer based on a dip coating process, which comprises a base cover rubber layer and a carbon fiber composite layer, wherein the carbon fiber composite layer is obtained by dipping carbon fiber composite cloth in glue, air-drying, and vulcanization; the carbon fiber composite layer is adhered to the upper surface of the base cover rubber layer through vulcanization; and the base cover rubber layer comprises the following raw material components: 95 parts of natural rubber, 15 parts of butadiene rubber, 3-5 parts of nano zinc oxide, 1-3 parts of stearic acid, 1-2 parts of solid malon resin, 1-2 parts of antioxidant 4010NA, 1-2 parts of antioxidant BW-60, 1-2 parts of heat-resistant antioxidant RF, 1-2 parts of antioxidant RD, 1-2 parts of microcrystalline wax, 0.5-0.8 parts of anti-scorching agent CTP, 45-50 parts of carbon black N220, 1-3 parts of aromatic oil, 1-3 parts of sulfur, and 1-2 parts of accelerator CBS. The application further discloses an ultrahigh-strength conveying belt, wherein the upper cover rubber layer of the ultrahigh-strength conveying belt adopts the carbon fiber composite reinforced cover layer based on the dip coating process, and the ultrahigh-strength conveying belt has the performance of ultrahigh strength.

A pipe belt system (100, 200) comprising a pipe belt (102, 400, 500, 600, 802) comprising one or more thermoplastic elastomeric (TPE) layers (402, 404, 406, 410) and a reinforcement layer (408, 508) is disclosed. The one or more TPE layers (402, 404, 406, 410) have a first modulus of elasticity and a first stiffness and formed across a width of the belt. The reinforcement layer (408, 508) is formed proximate to the one or more TPE layers (402, 404, 406, 410) and has a second modulus of elasticity and a second stiffness. The pipe belt is configured to have an open state where the belt is substantially flat and a closed state where the belt is formed having a circular shape and partially overlaps itself. The pipe belt has a combined modulus of elasticity based on the first modulus of elasticity and the second modulus of elasticity and a combined stiffness based on the first stiffness and the second stiffness.

A ceramic ablation-resistant conveyor belt includes a core layer and a vulcanized layer. A ceramic sheet is embedded inside a frame and embedded on the vulcanized layer of the conveyor belt body together with the frame, and is directly connected to a skeleton. The vulcanized layer is exposed on an upper surface of the ceramic sheet. The ceramic sheet is embedded in the frame, which is embedded in the vulcanized layer, which is directly connected to the skeleton to make it stronger. The frame is fixed through the vulcanized layer, and the ceramic sheets are fixed through the frame, which is more solid compared with ceramic sheets connected only by bonding. The conveyor belt is more stable, and the ceramic sheet is less likely to fall off during long-term use. If it falls or is damaged, it can be easily replaced, thereby improving its service life.

The invention relates to an elastomeric article comprising an elastomeric base body and a composite of an elastomeric sheet and a textile surface body, wherein the composite is arranged as a surface layer on one side of the base body, such that the textile surface body faces the base body, and wherein the elastomeric sheet contains particles, preferably spheres, of cross-linked polyorganosiloxane. The composite used in the elastomeric article is particularly suitable as a surface layer for force transmission zones and is characterized by low sliding friction.

The present application belongs to the technical field of conveying belt, and particularly relates to a flame-retardant heat-resistant conveying belt and a preparation method thereof. The flame-retardant heat-resistant conveying belt provided by the present application comprises a framework layer and a covering rubber layer, and the covering rubber layer comprises the following components: ethylene-propylene-diene rubber, nitrile rubber, flame-retardant resin, reinforcing agent, nano flame-retardant agent, accelerator, antioxidant and sulfur. In the present application, the flame-retardant resin is used as part of the flame-retardant agent instead of the traditional flame-retardant agent to be added into the covering rubber, so as to reduce the influence of the amount of the flame-retardant agent on the mechanical properties of the covering rubber; the bisphenol A-bis(diphenyl phosphate) modified nano aluminum hydroxide is used as the nano flame-retardant agent to be added into the covering rubber, so as to improve the compatibility of the nano aluminum hydroxide with the covering rubber and the flame-retardant heat-resistant properties of the covering rubber; and the 2-mercaptobenzothiazole and N-cyclohexyl-2-benzothiazole sulfenamide are used to form the accelerator together, so as to improve the vulcanization efficiency and improve the mechanical properties and aging resistance of the covering rubber.

A conveyor belt including a carry cover layer, a reinforcement layer which is situated below the carry cover layer, and a pulley cover layer which is situated below the reinforcement layer, where the reinforcement layer is comprised of steel cordage and rubber matrix, and wherein the rubber matrix includes zinc oxide in an amount greater than 5 phr. In some cases the rubber the matrix includes zinc oxide in an amount of 11 phr or greater, or even in an amount of 16 phr or greater. In some aspects, the rubber matrix is devoid of lead oxide. In some aspects, the steel cordage is zinc coated steel cords.

The present invention is a toothed belt comprising a back portion in which a core wire extending in the belt circumferential direction is embedded, and a plurality of tooth portions formed on the inner circumferential surface of the back portion at intervals in the belt circumferential direction, and including a back rubber layer formed on the outer circumferential side of the belt relative to the core wire, and a first rubber layer and second rubber layer that are formed on the inner circumferential side of the belt relative to the core wire, the belt inner circumferential surface being configured from a tooth cloth, wherein the back portion includes the back rubber layer, the elastic modulus of the first rubber layer is larger than the elastic modulus of the second rubber layer, and the tooth portions include the tooth cloth, the first rubber layer, which is formed along the tooth cloth, and the second rubber layer, which is interposed between the first rubber layer and the core wire.

The invention relates to an aramid fiber conveying belt and a preparation method thereof, and relates to the technical field of rubber conveying belts. The aramid fiber conveying belt comprises upper covering rubber, a framework layer and lower covering rubber, the framework layer comprises a single-layer aramid fiber fabric, and the warp tensile strength of the single-layer aramid fiber fabric is larger than or equal to 6000 N / mm; the preparation method of the aramid fiber conveying belt comprises the steps of preparation of aramid fiber fabric grey cloth, dipping and heat treatment, calendaring and forming and vulcanization. The single-layer high-strength aramid fiber fabric is adopted as the framework layer, the limitation that a traditional conveying belt depends on multi-layer stacking to achieve high strength is broken through, on the premise that the strength meets or even exceeds the strength of a traditional high-end conveying belt, the belt body is lighter and thinner, the overall mass is lighter, and weight reduction of the conveying belt is achieved; and meanwhile, the structural strength and the service life under the conditions of heavy load and long distance are ensured.

The application belongs to the technical field of polymer material conveying belt, and discloses an aramid fiber reinforced impact resistance and wear resistance conveying belt and a preparation method. The conveying belt comprises a covering rubber, a core layer rubber and an aramid fiber cloth. The surface crystallinity of aramid short fibers is moderately reduced by dimethyl sulfoxide infiltration, and then GMA functional groups and carboxyl functional groups are used to penetrate the aramid short fibers, so as to enhance the activity of the aramid short fibers and promote the interaction between the modified aramid short fibers and the rubber, thereby greatly improving the tensile strength, wear resistance and shear impact resistance of the covering rubber. By using malic acid resin in the core layer rubber, the core layer rubber and the aramid fiber cloth are fully penetrated and bonded, the adhesion strength of the covering rubber and the aramid fiber cloth is enhanced, the structural strength and durability of the conveying belt are improved, the protective rubber layer is prevented from falling off, the aramid core layer skeleton is matched, the service life of the conveying belt is prolonged, and the long-distance heavy-load conveying belt demand is met.

The invention belongs to the technical field of conveying belts, and particularly relates to a flame-retardant heat-resistant conveying belt and a preparation method thereof. The flame-retardant heat-resistant conveying belt comprises a framework layer and a covering rubber layer, and the covering rubber layer comprises the following components: ethylene propylene diene monomer, nitrile rubber, flame-retardant resin, a reinforcing agent, a nano flame retardant, an accelerant, an anti-aging agent and sulfur. The flame-retardant resin is used as a part of flame retardant to replace a traditional flame retardant to be added into the covering rubber, so that the influence of the dosage of the flame retardant on the mechanical property of the covering rubber is reduced; bisphenol A-bis (diphenyl phosphate) modified nano aluminum hydroxide is adopted as a nano flame retardant to be added into the covering rubber, so that the compatibility of the nano aluminum hydroxide and the covering rubber is improved, and meanwhile, the flame-retardant and heat-resistant properties of the covering rubber are improved; 2-mercaptobenzothiazole and N-cyclohexyl-2-benzothiazole sulfenamide are adopted to jointly form an accelerant, so that the vulcanization efficiency is improved, and the mechanical properties and aging resistance of the covering rubber are improved.

The present invention pertains to a toothed belt comprising a back portion in which a core wire extending in the belt circumferential direction is embedded, and a plurality of tooth portions formed on the inner circumferential surface of the back portion at intervals in the belt circumferential direction, and including a back rubber layer formed on the outer circumferential side of the belt relative to the core wire, and a first rubber layer and a second rubber layer that are formed on the inner circumferential side of the belt relative to the core wire. The back portion includes the back rubber layer. The elastic modulus of the first rubber layer is larger than the elastic modulus of the second rubber layer. The first rubber layer is formed from a first cross-linked rubber composition including a first rubber component and first short fibers, the proportion of the first short fibers is 5-60 parts by mass with respect to 100 parts by mass of the first rubber component. The first short fibers are aligned in the belt longitudinal direction along the contour of the tooth portions, and the tooth portions include the first rubber layer and the second rubber layer which is interposed between the first rubber layer and the core wire.

The application relates to the field of rubber V-belts, in particular to a reinforced high-strength rubber V-belt and a preparation method thereof, which are used to solve the problems of short service life and low mechanical strength of existing rubber V-belts; the reinforced high-strength rubber V-belt is in a sandwich structure of cross distribution and mutual embedding of a rubber layer and a reinforcing layer; the embedding of the reinforcing layer is beneficial to improving the mechanical strength and fatigue resistance of the rubber V-belt and prolonging the service life of the rubber V-belt; and after high-performance adhesive is used, the connection between the rubber layer and the reinforcing layer can be further tightened, and the comprehensive performance of the rubber V-belt is further enhanced.

The invention discloses a bio-based aramid fiber fabric flame-retardant conveying belt and a manufacturing method thereof, and belongs to the technical field of conveying belts. According to the method, bio-based polyamide elastomers are adopted to be blended with bio-based hydrogenated nitrile rubber and bio-based chlorosulfonated polyethylene respectively to prepare bonding rubbers and flame-retardant antistatic covering rubbers; then forming belt billets on the two surfaces of the preheated aramid canvas through'secondary rubberizing 'calendering and segmented vulcanization processes, and compounding and covering a rubber sheet for vulcanization molding to obtain the bio-based aramid fabric flame-retardant conveying belt. A tough interface is constructed through hydrogen-bond interaction between bio-based polymers and a special adhesive, and an organic-inorganic hybrid flame-retardant and conductive network is combined, so that ultrahigh bonding strength, lasting dynamic fatigue performance, intrinsic flame-retardant and antistatic properties and high bio-based content are synchronously realized, and the flame-retardant conductive adhesive is comprehensively suitable for harsh working conditions such as coal mines and the like; the technical bottlenecks that a traditional aramid fiber conveying belt depends on a formaldehyde-containing RFL technology, interlayer stripping is prone to occurring, and the environmental protection property is poor are effectively solved.

A frictional power-transmission belt having a frictional power-transmission surface covered with a composite fiber layer, in which the composite fiber layer includes a fiber member and an isocyanate compound, and the fiber member includes a cellulose-based fiber. In the frictional power-transmission belt, the isocyanate compound may have a proportion of 3 to 20 mass % in the composite fiber layer.

The invention relates to a rubber surface aramid fiber fabric whole core flame-retardant conveying belt and a manufacturing method thereof, and belongs to the technical field of conveying belts, a flame-retardant bonding rubber layer is added between a belt core and a covering rubber layer, a nitrile rubber and natural rubber blending system is adopted, and a resorcinol resin and white carbon black composite bonding accelerant is matched, so that the flame-retardant conveying belt is obtained. Interface bonding is enhanced through double effects of chemical bonding and physical adsorption, and meanwhile, the process sequence is optimized, namely, the flame-retardant bonding rubber layer is thermally bonded with the plasticized belt core through four-roller calendering, and then is compounded with the covering rubber layer, so that the flame-retardant bonding rubber layer is tightly bonded with the plasticized belt core and the covering rubber layer without bubbles; finally, the bonding strength of the covering rubber layer and the plasticized belt core is improved to 14.8-17.3 N / mm and far exceeds the MT / T914 standard requirement, the layering and degumming problem is thoroughly solved, the tensile strength, the elongation at break and the wear resistance of the covering rubber layer are all superior to the standard, and the long service life and the structural integrity of the conveying belt under the working conditions of high-strength wear and frequent impact are guaranteed.

A friction transmission belt includes a compression layer (12) forming a pulley contact portion, the compression layer includes an inner layer formed from a rubber composition and an outer layer (14) provided on a pulley contact side of the inner layer and formed from a fiber member, and a ratio (M10 modulus / M50 modulus) of an modulus at 10 % elongation in a belt longitudinal direction (M10 modulus) to an modulus at 50 % elongation in the belt longitudinal direction (M50 modulus), of the rubber composition, is not less than 1.5.

The present disclosure relates to an extruded industrial fabric. A method of manufacture of the industrial fabric is crosshead extruding a first layer polymeric matrix material with linear components. The linear components crosshead extruded with the polymeric matrix material may be continuous systems oriented in the machine direction. A nonwoven layer of material is provided on a surface of the first layer of polymeric matrix material and a second layer of polymeric matrix material is extruded onto the nonwoven layer of material. The first layer of polymeric matrix material at least partially encompasses the linear components. A faceside of the industrial fabric may be smooth or may include a texture or pattern. A backside may be smooth (planar), have a variable roughness, or include needled fibers that are incorporated into the structure of the fabric.

An article such as a multilayer hose includes at least one layer formed from an elastomeric composition including one or more polychloroprene elastomer(s); and a sustainable vulcanizing agent adapted to cure the one or more polychloroprene elastomer(s), the sustainable vulcanizing agent being at least partially derived from a sustainable source of treated dregs, and having a composition comprising, in % by mass based on the sustainable vulcanizing agent: 25%-50% CaO, 2% to 20% MgO, and 20% to 40% ZnO.

The invention relates to the technical field of conveying belts, and discloses a high-wear-resistance low-rolling-resistance energy-saving conveying belt and a production method thereof.The method comprises the following steps that a core layer framework is prepared, high-strength polyester fibers are selected to be subjected to a double-twisting process, heat setting and surface activating treatment; preparing a buffer layer, namely banburying and mixing hydrogenated nitrile rubber, nano zinc oxide and other raw materials; preparing a wear-resistant layer, namely mixing ultra-high molecular weight polyethylene powder, liquid butadiene styrene rubber and other raw materials at a high speed; carrying out dipping treatment, so that the core layer framework is uniformly coated with an epoxy modified polyurethane binder; composite molding: vulcanizing at high temperature and high pressure through a press vulcanizer; carrying out surface treatment, and forming anti-skid patterns by adopting laser etching; and post-processing: cooling and trimming to obtain a finished product. The service life of the conveying belt is prolonged, the stability of the conveying belt in the operation process is improved, and the use safety is improved.

The application belongs to the technical field of V-belts, and particularly relates to a high and low temperature resistant toughened brown silk V-belt and a preparation method thereof. The V-belt comprises a strength layer, an upper portion of the strength layer is provided with a tension layer, a lower portion of the strength layer is provided with a compression layer, and the outer sides of the tension layer and the compression layer are wrapped with a wrapping layer. The pretreated toughened brown silk is pulled through the molten tension layer glue to form a buffer cord, the buffer cord is wound to form a pre-use layer through a rotating roller, the compression layer glue is bonded to the lower portion of the pre-use layer to form a base layer, the base layer is wrapped through the wrapping layer, and the prepared V-belt is obtained after vulcanization, and the V-belt has good mechanical properties and thermal stability.