189 results about "Natural rubber" patented technology

The invention belongs to the technical field of numerical control machining of aluminum alloy hubs, and discloses multi-axis numerical control turning and milling combined machining equipment for multi-axis linkage of aluminum alloy hubs, which comprises a numerical control turning and milling combined machining head, one end of the numerical control turning and milling combined machining head is fixedly connected with a shaft fixing chuck used for placing and connecting a machining workpiece, and the other end of the numerical control turning and milling combined machining head is fixedly connected with a spindle. A numerical control clamping and fixing part is arranged in the inner wall of the shaft fixing chuck and used for rigidly clamping and fixing a machined workpiece, a flexible clamping and fixing part is arranged in the inner wall of the shaft fixing chuck and used for flexibly clamping and fixing the machined workpiece, and a clamping calibration assembly is arranged in the flexible clamping and fixing part. Initial fixation is provided through cooperation of a slope clamp and a rubber filler strip, a rigid clamping layer is formed through feedback closed-loop control of an electric cylinder by a pressure sensor, a natural rubber ball body is embedded in a rubber sleeve, and a flexible compensation layer is formed by self-adaption to workpiece deformation and dynamic compensation vibration deviation under the suction action of an elastic corrugated pipe.

The invention relates to the technical field of natural rubber modification, in particular to a flexible long-chain chain extender as well as a preparation method and application thereof. The structural general formula of the flexible long-chain chain extender is A-[flexible chain segment]-A, wherein: the [flexible segment] is a polyether polyol chain or a polyester polyol chain having a number average molecular weight of 500 to 5000 g / mol; a is an isocyanate group or an anhydride group. The invention also provides a natural rubber flexible long chain extension modification method based on end group functionalization, which comprises the following steps: pretreating an alpha end group and / or an omega end group of natural rubber, and introducing a hydroxyl or carboxyl active group; and reacting the functionalized natural rubber with a flexible long-chain chain extender at 60-80 DEG C to realize extension and crosslinking of a molecular chain. According to the invention, the flexible long-chain chain extender is introduced, and a flexible buffer section is embedded between natural rubber molecular chains, so that the dynamic stress is effectively dispersed, and the inherent defects of the traditional rigid small-molecule chain extender are overcome.

The invention discloses a flexible dynamic processing system for natural rubber, which solves the problems of low manual sorting efficiency, large weighing error and low processing efficiency caused by non-uniform material forms in the traditional process, takes a control module as a center, identifies dried material forms and edge defects in real time by a visual detection module, and improves the quality of dried materials. The regular materials are hydraulically cut to obtain equal-width long strips, the equal-width long strips are cut into equal-length blocks through a fixed-length dicing mechanism after being turned by a first conveying roller with a guide baffle, and edge cut strips are conveyed to a second crushing section through a second sorting conveyor; irregular materials are directly subjected to first crushing. And the double crushed materials are fed back directionally corresponding to a weighing link, so that the density is consistent. According to the system, through dynamic cutting and directional recycling, material flexible machining and full-chain intelligent management and control are achieved, and the specification uniformity and the machining precision are improved.

The present application relates to the technical field of detection, and particularly relates to a method for measuring intrinsic viscosity of rubber by using chlorobenzene solution, comprising the following steps: obtaining initial mass of insoluble polymer sample; filtering solution of the sample to obtain mass of insoluble substance intercepted by filter medium; cleaning container of the sample of the solution and collecting cleaning liquid to obtain mass of container residue; determining real sol mass based on the mass of the residue, the mass of the insoluble substance and the mass of the container residue; and determining concentration of the solution based on the real sol mass and volume of the solution. The present application effectively solves the technical problem of large error in measuring intrinsic viscosity by using tetrahydrofuran solvent, and simultaneously provides an alternative scheme for evaluating quality of natural rubber.

The utility model relates to the technical field of metal composite laminates, in particular to a composite metal laminate with high impact resistance, which comprises two aluminum alloy plate layers, polypropylene fiber reinforced layers are arranged between the two aluminum alloy plate layers, two polypropylene fiber reinforced layers are arranged between the two aluminum alloy plate layers, and the polypropylene fiber reinforced layers are arranged between the two aluminum alloy plate layers. Two natural rubber layers are arranged between the two polypropylene fiber reinforced layers, a thermoplastic polyurethane layer is arranged between the two natural rubber layers, and an ethylene-vinyl acetate copolymer adhesive layer is arranged between the aluminum alloy plate layer and the polypropylene fiber reinforced layers. An ethylene-acrylic acid copolymer adhesive layer is arranged between the natural rubber layer and the polypropylene fiber reinforced layer. According to the metal composite laminate, the composite metal laminate with high impact resistance is obtained on the premise that few metal layers are used and the machining difficulty is reduced.

Disclosed is a method of manufacturing a sports floor component (200, 404), comprising:mixing (102) epoxidized natural rubber, ENR, a filler (700, 904, 1104, 1112) and imidazole or an imidazole derivate to provide a rubber composition;curing (106) the rubber composition to form a matrix of reversibly cross-linked ENR molecules incorporating the filler.

The utility model relates to the technical field of carpets, and discloses an anti-skid chenille tufted carpet, which comprises an anti-skid component and a disassembly component, the anti-skid component is arranged at the bottom of the disassembly component, the anti-skid component comprises a base fabric, a buffer pad is adhered to the bottom of the base fabric, an anti-skid pad is adhered to the bottom of the buffer pad, and the anti-skid pad is adhered to the bottom of the anti-skid component. A plurality of grooves are formed in the bottom of the non-slip mat, each groove is filled with sponge, the base cloth is made of terylene, the buffering mat and the base cloth are mutually pasted and fixed through glue, and the non-slip mat is made of natural rubber materials. Friction with the ground is increased through a buffering pad, an anti-skid pad and sponge, the overall anti-skid effect is improved, ground dust can be adsorbed, and meanwhile the overall buffering effect is improved; and through disassembly and assembly of the back lining, the back lining can be conveniently and independently taken out, the overall size and weight are reduced, and the tufting layer can be conveniently cleaned.

The application relates to the technical field of ABS particle preparation, and discloses an antibacterial ABS particle and a preparation method thereof, the antibacterial ABS particle comprising the following raw materials: ABS resin, anti-aging natural rubber, a flame retardant, a lubricant, an ultraviolet absorber, antibacterial halloysite nanotubes and an initiator; wherein the anti-aging natural rubber is prepared by reacting epoxidized natural rubber with 2-mercaptobenzimidazole; the antibacterial halloysite nanotubes are prepared by reacting halloysite nanotubes with isonicotinic acid, and then reacting with 8-bromo-1-octene. The antibacterial ABS particle prepared by the application has excellent impact resistance, toughness, anti-aging performance and antibacterial performance, can exert long-term antibacterial and anti-aging effects, can meet the application requirements in various environments, greatly expands the use field of the ABS particle, significantly prolongs the service life of the ABS particle, and can generate great economic benefits.

The utility model relates to the technical field of dog chews, in particular to a functional dog chew capable of adsorbing bad breath, which comprises a dog chew main body, an air bag component arranged in the dog chew main body and filler components symmetrically arranged at the upper end and the lower end of the air bag component, an air bag assembly is detachably clamped in the center of the interior of the natural rubber cylinder; the long-acting breath freshening device has the advantages that the natural deodorization materials such as green tea extract, mint or spirulina are utilized, volatilized and released through extrusion of the air bag and directly act on the oral cavity, peculiar smell molecules are adsorbed or neutralized, and the long-acting breath freshening effect is achieved; the pressing plate is triggered to extrude the air bag through the occlusion action, air flows to the filler barrel in a one-way mode through the air conveying pipe, deodorization substances are pushed to be volatilized and released, and the linkage effect that deodorization is achieved through occlusion is achieved.

The present application relates to the technical field of shoe material, and particularly relates to a high-elastic wear-resistant sports shoe material and a preparation method thereof, which comprises the following raw materials in parts by weight: modified EVA body 40-45 parts, natural rubber 30-35 parts, reinforcing agent 8-12 parts, nano silver agent 8-12 parts, zinc oxide 5-8 parts, calcium stearate 3-5 parts, AC foaming agent 2-3 parts, paraffin 2-3 parts, crosslinking agent 0.5-0.8 parts and anti-aging agent 1-3 parts. The sports shoe material of the present application uses the modified EVA body in combination with the natural rubber, and adds the raw materials such as zinc oxide, calcium stearate, AC foaming agent, paraffin and crosslinking agent as functional additives, so that the prepared sports shoe material can improve the elastic performance and wear resistance of the product, and can inhibit the growth of bacteria, thereby improving the performance effect of the product.

A natural rubber based infill for artificial turf, the infill comprising biodegradable granules 19, the biodegradable granules comprising natural rubber that has been physically, rather than chemically, modified by the addition of an amount of a filler material, the biodegradable granules having an average size of 0.2 to 5 mm.

The utility model relates to a lithium battery internal structure integrity device based on vibration detection, the device comprises a test part, a positioning part and a protection part, the test part is composed of a test board, a base, a pillar, a cushioning pad, a vibration motor and a vibration sensor, the vibration motor adopts a linear vibration motor (50-500Hz) to drive the test board to vibrate, and the positioning part is arranged on the base. The cushioning pad is made of 8-15mm natural rubber so as to isolate external interference; the positioning part realizes self-adaptive fixation of the battery through an air cylinder and a positioning rubber block on the door frame type bracket; and the protection part adopts an electric push rod to drive a 8-12mm silica gel protection pad, so that the vibration displacement of the battery is prevented. According to the device, battery feedback signals are collected in real time through broadband vibration, the problems of looseness, breakage and the like in the battery can be accurately detected in combination with dynamic anti-interference design, and the device has the advantages of dynamic detection, self-adaptive positioning, high reliability and integration and is suitable for the field of lithium battery production and safety evaluation.

This invention discloses a durable, hydrophobic, and flame-retardant wood coating and its preparation method, belonging to the field of timber structure building protection. The wood coating of this invention is a two-layer system, comprising a flame-retardant primer and a hydrophobic topcoat. The flame-retardant primer uses tung oil modified from natural rubber via the Diels-Alder reaction as the film-forming matrix and biochar prepared from agricultural waste straw as a bio-based flame-retardant filler. The hydrophobic topcoat uses polydimethylsiloxane / nano-silica as the core functional component. This invention uses fully bio-based raw materials as its core, and the preparation process is simple and green. Through molecular structure modification and synergistic design of the two-layer system, the coating simultaneously possesses excellent hydrophobicity, flame retardancy and smoke suppression, UV stability, and long-term outdoor durability. After being applied to the wood surface, it can simultaneously solve the core pain points of wood's flammability, moisture absorption, and poor weather resistance, showing broad application prospects in the fields of modern timber structure buildings and the protection of traditional timber architectural heritage.

The invention belongs to the technical field of biology, and particularly relates to a kok-saghyz natural rubber high-yield gene SCL190 and application thereof. The invention provides a nucleic acid molecule which comprises any one of the following nucleotide sequences: a nucleotide sequence as shown in SEQ ID NO: 1; a nucleotide sequence having at least 90% sequence consistency with the nucleotide sequence as shown in SEQ ID NO: 1; a nucleotide sequence encoding the amino acid sequence represented by SEQ ID NO: 2; a nucleotide sequence encoding an amino acid sequence having at least 90% sequence identity with the amino acid sequence as shown in SEQ ID NO: 2; wherein the nucleic acid molecule is capable of imparting higher root biomass and natural rubber content to kok-saghyz in which the nucleic acid molecule is overexpressed. The invention provides a new gene resource and method for cultivating a new variety of high-yield rubber kok-saghyz.

The present disclosure includes chewing gum base compositions and related methods of use and preparation thereof. For example, the present disclosure includes a chewing gum base composition comprising from about 25% to about 50% by weight of a natural rubber composition, from about 20% to about 35% by weight of a resin, from about 15% to about 25% by weight of a filler, from about 15% to about 20% by weight of a softener, from about 15% to about 20% by weight of a plasticizer, and from about 2% to about 10% by weight of an emulsifier. The natural rubber composition may include at least 99% by weight of edible deproteinized natural rubber, and the edible stabilizer includes an antioxidant selected from the group consisting of butylated hydroxytoluene (BHT), tocopherol, or a combination thereof.

The invention discloses an anti-aging rubber composite material and a preparation method thereof, and relates to the technical field of rubber composite materials. Lignin is grafted to a rubber molecular chain through a graft copolymerization reaction to obtain graft modified rubber with certain aging resistance, natural rubber and the graft modified rubber have better compatibility by adding polyacrylamide, the binding force between rubber particles is increased, and the service life of the rubber is prolonged. The influence of oxygen on a rubber molecular chain is effectively isolated, so that the mechanical property and the aging resistance of the natural rubber composite material are improved.

The application discloses a kind of powder natural rubber, comprising: natural rubber, isolating material and dispersant;Wherein, with natural rubber 100 parts, the content of the isolating material is 5.0~15.0 parts.The application also discloses a kind of powder natural rubber preparation method, including isolating material slurry preparation, natural latex thickening, mixed system preparation, mechanical turbulence coagulation, and powder natural rubber preparation.The content of the isolating material in the powder natural rubber of the application is reduced to 15.0% or less, while effectively maintaining the physical properties of the natural rubber system, reducing the amount of isolating material, and the physical properties of the finished product are closer to pure natural rubber.

Disclosed is a sports floor component (200, 404, 6001) comprising covalently cross-linked rubber (902), and further comprising a filler (700, 904), wherein the rubber is natural rubber or epoxidized natural rubber.

The present application relates to the field of chip encapsulation, and particularly relates to a chip encapsulation and a preparation of an embedded chip conveying belt, wherein natural rubber and butadiene rubber are put into a torque rheometer, then an activator, a composite wave-transparent agent, modified rice husk and paraffin oil are sequentially added, mixing is carried out, standing is performed, sulfur, a scorch retarder and an accelerator are added, mixing is carried out, a mill is used to press a sheet, cooling is performed, and a chip encapsulation is obtained; lignin and silicon dioxide are extracted and precipitated from the rice husk by using an alkali extraction and an acid co-precipitation method, a nano-sized spherical lignin-silica hybrid material is obtained by self-assembly through intermolecular hydrogen bonds as a pretreated rice husk, the aldehyde group of the pretreated rice husk is modified, and then a phosphorus-amine ionic liquid is grafted; silicon nitride, glass fiber and aramid fiber are compounded as a wave-transparent agent, the wave-transparent agent is epoxidized first, and then the phosphorus-amine ionic liquid is grafted.

The present invention relates to an elastic microfiber for a strain sensor, and a manufacturing method therefor. According to exemplary embodiments of the present invention, a wearable sensor can be provided, the sensor being capable of resolving a mechanical hysteresis problem, which is a limitation of a conventional natural rubber-based strain sensor, and performing stable and reliable motion detection.

The utility model provides an automobile air conditioner damping composite pressing plate assembly which comprises a bearing arc plate, a first rubber buffer pad is installed on the inner wall of the bearing arc plate, two pairs of side plates are symmetrically fixed to the bearing arc plate, through holes are formed in the surfaces of the side plates, two upper pressing arc plates are arranged above the bearing arc plate at intervals, and the two upper pressing arc plates are arranged on the bearing arc plate at intervals. A first rubber buffer pad is installed on the inner wall of the upper pressure arc plate, a second rubber buffer pad is installed on the inner wall of the upper pressure arc plate, the first rubber buffer pad and the second rubber buffer pad are both made of natural rubber, a connecting base is fixed to the bottom of the bearing arc plate and fixed to a vehicle body through high-strength bolts, and connecting plates are fixed to the two sides of the upper pressure arc plate. The air conditioner pipe fitting solves the problems that an existing air conditioner pipe fitting is only simply fixed to a vehicle body, after the air conditioner pipe fitting is used for a long time, key parts of the pipe fitting are prone to being damaged, and finally an air conditioner cannot be used normally.

The invention relates to the field of rubber additives, and provides a lignin-based composite material as well as a preparation method and application thereof. In order to solve the problem that in the prior art, the heat generation temperature of rubber prepared by taking lignin as a reinforcing agent is too high, the lignin-based composite material provided by the invention comprises the following components in parts by weight: 100 parts of lignin, 5-50 parts of a porous material, 1-30 parts of a metal oxide modifier, 1-20 parts of an organic acid modifier and 0.1-5 parts of a methylene donor. The preparation method comprises the following step: mixing lignin, a metal oxide modifier, an organic acid modifier, a methylene donor and a porous material to obtain the lignin-based composite material. According to the invention, organic acid salt generated by reaction of organic acid and a metal oxide modifier is used for in-situ interface modification, so that the interface compatibility of lignin and natural rubber can be effectively improved, the internal friction between rubber molecular chains is reduced, and the heat generation temperature of lignin is further reduced.

The invention relates to the technical field of road engineering materials, in particular to modified asphalt and a preparation method thereof. Comprising road asphalt, a geopolymer precursor solution, a star-shaped SBS modifier, epoxidized natural rubber, epoxidized soybean oil, a mercapto silane coupling agent, dibutyltin dilaurate, hydrogenated petroleum resin, nano organic montmorillonite, a wax regulator, a light stabilizer and an antioxidant. The geopolymer precursor solution, the epoxidized natural rubber and the epoxidized soybean oil are subjected to synergistic reaction under a mercaptosilane bridging system to construct a stable organic-inorganic hybrid interpenetrating network structure, so that the technical bottleneck of poor two-phase compatibility is effectively overcome; the modified asphalt has the advantages of excellent high-temperature stability, strong interface bonding force, excellent water damage resistance, good low-temperature toughness and good storage stability.

The utility model relates to the field of radiation medical equipment, in particular to a cyclotron target sheet extrusion device which comprises a cyclotron outlet and further comprises a target sheet body, a containing groove is formed in the upper side of the interior of the cyclotron outlet, and an installation box is fixedly installed at the upper end of the cyclotron outlet. An electric telescopic rod is fixedly mounted in the mounting box, the output end of the electric telescopic rod extends to the inner side of the containing groove and is fixedly provided with a connecting shifting piece, a flexible protection pad is fixedly mounted on the inner side of the connecting shifting piece, and a spherical buffering cavity is formed in the flexible protection pad; the flexible protection pad is driven by the electric telescopic rod to be attached to and extruded out of the target piece body, vibration force is absorbed and converted by means of air pressure change in the spherical buffering cavity in cooperation with the elastic deformation capacity of the buffering spring, the flexible protection pad is made of natural rubber, and the inner surface of the flexible protection pad is completely attached to the side of the target piece body. Therefore, the target sheet body can be extruded in a relatively fitting and soft manner.

The utility model discloses a tensile rubber knitted water pipe which comprises a rubber water pipe body, a tensile ring is arranged on the outer edge face of the rubber water pipe body, the rubber water pipe body comprises a main body layer, a tensile layer is arranged on the outer edge face of the main body layer, a reinforcing layer is arranged on the inner edge face of the main body layer, and a protective layer is arranged on the outer edge face of the tensile layer. The tensile layer is formed by weaving a plurality of knitting threads in a staggered mode, the main body layer is formed by natural rubber and butadiene styrene rubber according to the proportion of 9: 1, the tensile layer is arranged to be in a net shape and covers the outer edge face of the main body layer, the four knitting threads are arranged in a spiral winding mode, and a buffering groove is formed by the four knitting threads jointly. The tensile rubber water pipe has the advantage of tensile resistance, and the problem that an existing rubber water pipe is poor in tensile resistance is solved.

The application provides a live working insulation shielding blanket, which comprises a surface layer and an inner layer, the surface layer has two layers and is attached to the outer surface of the inner layer, the inner layer is a multi-layer structure arranged in a laminated mode, the raw material of the surface layer comprises EVA, montmorillonite loaded with imidazole polybasic borate complex, natural rubber, PA6 short fibers, EVA-g-MAH, a flame retardant, an antioxidant and a colorant, and the raw material of the inner layer comprises EVA, montmorillonite loaded with imidazole polybasic borate complex, natural rubber, EVA-g-MAH and a colorant. The montmorillonite loaded with imidazole polybasic borate complex is added to the surface layer and the inner layer in cooperation, multiple protections of outer molten prevention and inner collapse prevention are realized, the service life of the material in an extreme environment is effectively prolonged, and the problems of easy softening and insulation failure of a traditional EVA insulation shielding blanket under high temperature are solved.

The invention relates to the technical field of anti-static materials, and discloses a high-reliability electromagnetic shielding anti-static bag sealing package which comprises two sets of polylactic acid fiber braid layers, one side of each polylactic acid fiber braid layer is provided with a bio-based conductive polymer electromagnetic shielding layer, and the other side of each polylactic acid fiber braid layer is provided with an anti-static material. A natural rubber jute fiber reinforcing layer is arranged on one side of the bio-based conductive polymer electromagnetic shielding layer, a chitosan modified anti-static layer is arranged on one side of the natural rubber jute fiber reinforcing layer, and a starch-based sealing material layer is arranged on one side of the chitosan modified anti-static layer; a bag cavity is formed in one side of the starch-based sealing material layer. Through cooperation of multiple layers of structures, the polylactic acid fiber woven layer is used as a support, the chitosan modified anti-static layer is used as a core to inhibit generation and accumulation of static electricity, electromagnetic shielding, structure strengthening and sealing layers are matched, the static electricity is prevented from damaging internal objects, and the anti-static protection reliability in storage and transportation is improved. And the problem of external static damage in storage and transportation stages is solved.

The application belongs to the technical field of medical apparatus and instruments, and discloses a handle-adjustable cyclopropene injector, which comprises a scale syringe, a piston handle is slidably connected to the inner wall of the scale syringe, a scale value is arranged on the handle body of the piston handle, and a handle metering adjusting part is arranged between the scale syringe and the piston handle; through cooperation of the cam plate, the cam groove and the torsional spring of the handle metering adjusting part, the piston handle is precisely positioned at multiple intervals, the arc-shaped abutment is used to limit the pushing of the scale syringe, so that the cyclopropene amount is prevented from being excessively or insufficiently pushed, the scale of the piston handle can be real-timely marked when the arc-shaped abutment is pulled up, the adjustment is efficient, the sleeve can be separated from the cam groove limit by only 90-degree torsion, the operation is flexible, the clamping limit structure clamps the knuckles of medical staff through the rubber bumps, the natural rubber material increases the friction, the hands are prevented from slipping when the piston is pushed, and the risk of medical accidents is reduced.

The invention relates to the field of natural rubber, in particular to natural rubber and a preparation process thereof.The natural rubber comprises natural rubber and a rubber taking device, the rubber taking device comprises a rubber taking rod, the front end of the rubber taking rod is fixedly connected with a rubber taking device, a dustproof plate is slidably connected into the rubber taking rod, a second plate spring is fixedly connected between the dustproof plate and the rubber taking rod, and the dustproof plate is located above the rubber taking device. The glue taking device further comprises two rotating frames, two fixing frames are rotationally connected into each rotating frame, and a first plate spring is fixedly connected between the two fixing frames in the same rotating frame. The preparation process of the natural rubber comprises the following steps: step 1, fixing a rubber taking device on a tree; 2, the bark scraping knife is moved, and bark is scraped off; 3, the glue taking device is inserted into the tree trunk; 4, the rubber is collected into a collecting bin through a pipeline; and 5, processing the rubber to prepare various products. The rubber taking device is used for collecting rubber, and impurities are blocked by a dustproof plate.