515 results about "Butyl rubber" patented technology

The invention relates to the technical field of solar cell module packaging, in particular to a packaging structure for a perovskite-back contact crystalline silicon laminated solar cell and a preparation method of the packaging structure. The packaging structure comprises a front light conversion glass layer, a perovskite top cell layer, an infrared light-transmitting adhesive film layer, a back contact crystal silicon bottom cell layer, an adhesive film layer and a packaging bottom plate which are arranged in sequence, and butyl rubber surrounding the perovskite top cell layer, the infrared light-transmitting adhesive film layer, the back contact crystal silicon bottom cell layer and the adhesive film layer is arranged between the front light conversion glass layer and the packaging bottom plate, and the near infrared transmittance of 780 nm to 1100 nm in the infrared transparent adhesive film layer is 93% to 100%. According to the packaging structure based on the front light conversion glass layer and the infrared light-transmitting adhesive film layer, regulation and control of short-wave ultraviolet and near-infrared spectrums are considered, and the photoelectric property and reliability of the perovskite-crystalline silicon four-terminal laminated device are remarkably improved.

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 a film covering process of a butyl rubber plug, which belongs to the technical field of butyl rubber plug preparation and is characterized in that during processing, in the same way as the prior art, a bonding surface of a film belt used for being bonded with a mixed rubber sheet needs to be activated, and then the bonding surface of the film belt is bonded with one side surface of an unvulcanized mixed rubber sheet; the film belt covers and is fixed on the mixing rubber sheet in an adhesion manner, and the key point is that in the covering and fixing process, the film belt is conveyed forwards in a manner of floating on a flowing liquid surface, and is attached and fixed with the mixing rubber sheet above the film belt in the conveying process, so that the film belt is prevented from being pulled by a conventional belt similar to a belt in belt transmission; and the film belt is prevented from being torn and damaged. The film laminating process can prevent the film belt from being torn due to mechanical traction and pulling as much as possible, and the processing process is convenient and reliable.

The invention relates to the field of sealing materials, in particular to a butyl rubber sealing material and a preparation method thereof. Comprising the following components in parts by weight: 50-70 parts of butyl rubber, 30-50 parts of a brominated isobutylene-p-methylstyrene copolymer, 30-50 parts of carbon black, 8-12 parts of an alkyl phenolic resin vulcanizing agent, 3-5 parts of zinc oxide, 1-3 parts of stearic acid, 1-3 parts of an anti-aging agent and 5-10 parts of a plasticizer. The butyl rubber provides ideal air tightness and heat aging resistance, bromine atoms are introduced into the brominated isobutylene-p-methylstyrene copolymer, co-vulcanization with the butyl rubber is achieved, it is ensured that a uniform and stable co-crosslinking network can be formed between the two rubber molecules, and the service life of the rubber is prolonged. The alkyl phenolic resin vulcanizing agent can form a C-C bond with high bond energy with two rubber molecules, so that the thermal aging resistance of the butyl rubber sealing material is effectively improved, the compression set is reduced, and the butyl rubber sealing material with excellent performance is prepared.

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.

The invention belongs to the technical field of high-molecular polymers and functional coatings, and particularly relates to a water-based high-molecular composite sound-absorbing and sound-insulating coating and a preparation method thereof. The composite sound-absorbing and sound-insulating coating comprises the following components in parts by weight: 20-40 parts of silicone acrylic emulsion; 15-30 parts of a porous sound-absorbing filler; 20-40 parts of a high-density sound insulation filler; 5 to 10 parts of cross-linked acrylate coated butyl rubber core-shell emulsion; 1-8 parts of a functional auxiliary agent; and 10 to 25 parts of deionized water. Through cooperative use of the porous sound-absorbing filler, the high-density sound-insulating filler and the butyl rubber elastic damping material, the sound-absorbing coefficient and the sound-insulating amount of the coating can be synergistically improved. Core-shell coating treatment is carried out on butyl rubber through cross-linked acrylate, the adhesive force, flexibility and alkali resistance of the coating can be remarkably improved, and meanwhile the acoustic performance of the coating is also improved.

The invention relates to the technical field of photovoltaic packaging materials, and discloses a butyl sealant for a self-repairing photovoltaic module and a preparation method of the butyl sealant. The butyl sealant is prepared from the following substances in parts by weight: 40 to 60 parts of modified butyl rubber, 20 to 35 parts of inorganic filler, 5 to 15 parts of tackifying resin, 2 to 8 parts of plasticizer, 0.5 to 2 parts of anti-aging agent, 0.3 to 1.0 part of bifunctional crosslinking monomer, 0.08 to 0.25 part of composite catalyst, 2 to 5 parts of microcapsule type repairing agent and 3 to 10 parts of drying agent. According to the invention, through the dual-mechanism design of a'sulfydryl-amino-silicon oxygen bond 'dynamic network and the microcapsule type repairing agent, the self-repairing performance and the aging resistance are synchronously and remarkably improved, and the contradiction that'the self-repairing performance and the aging resistance of a traditional material are difficult to consider at the same time' is solved. Tests show that the 12h repair rate of the sealant for 3mm scratches at 50 DEG C is greater than or equal to 98%, the tensile strength retention rate is greater than or equal to 92% after the sealant is subjected to damp-heat aging at 85 DEG C / 85% RH for 1000 h, and the sealant is superior to existing similar products.

The invention belongs to the technical field of rubber base plates, and provides a vibration and noise reduction rubber base plate with high damping and low dynamic-static ratio as well as a preparation method and application thereof.The vibration and noise reduction rubber base plate is prepared from the following raw materials in parts by mass: 25-50 parts of natural rubber, 45-65 parts of halogenated butyl rubber, 6-12 parts of epoxy natural rubber, 40-50 parts of a reinforcing agent, 9-15 parts of p-tert-octyl bromide phenolic curing resin and 4-6 parts of zinc oxide; 1-3 parts of stearic acid, 3.4-4.5 parts of an anti-aging agent, 3-5 parts of a silane coupling agent, 4-5 parts of an accelerant and 0.8-1.2 parts of sulfur. The rubber base plate has the characteristics of high frequency, high damping, low dynamic-static ratio and excellent anti-fatigue performance.

The invention discloses a stab-resistant rubber, a preparation method of the stab-resistant rubber and a stab-resistant tire, the stab-resistant rubber comprises the following components in percentage by weight: 40-60% of butyl rubber, 5-15% of aramid fiber, 10-15% of nano silicon dioxide, 10-20% of plasticizer, 1-3% of vulcanizing agent and 5-10% of additive, and the additive comprises an anti-aging agent, an accelerant and a filler which are mixed. The puncture resistance of the puncture-proof rubber is remarkably improved, puncture of a tire by a sharp object can be effectively prevented, and the risks of tire air leakage and tire burst are greatly reduced.

The invention discloses a hyperbranched polyether branching agent with an adjustable structure and a preparation method and application thereof.According to the branching agent, 3-butene-1-alcohol serves as an initiator, a hyperbranched skeleton is constructed through anion ring-opening polymerization reaction and diglycidyl ether, then esterification and end capping are conducted through anhydride, and the hyperbranched polyether branching agent with the adjustable structure is obtained. The tail end of the hyperbranched polyether contains vinyl double bonds, and the ester group structure of the hyperbranched polyether can be regulated and controlled. Different diepoxy compounds are selected to control a main chain structure, and different anhydrides are used for regulating and controlling the chemical composition of branched chains, so that accurate design of molecular weight, polarity and number of functional groups of the branching agent is realized. The branching agent has excellent dissolvability in common organic solvents, and solves the problem of poor dissolvability of the traditional polydiene branching agent. When the star-shaped branched butyl rubber is applied to the synthesis of star-shaped branched butyl rubber, the distribution and number of branched points can be accurately regulated and controlled, the weight-average molecular weight and molecular weight distribution index of the rubber are remarkably improved, and the side reaction of gel is avoided.

The invention discloses a preparation method of a high-elastic damping foaming material, which comprises the following steps: S1, melting and blending raw materials comprising a basic elastomer, a hydrogenated styrene thermoplastic elastomer, brominated butyl rubber, a foaming agent and a cross-linking agent to form a homogeneous precursor composition; s2, synchronously carrying out chemical foaming and cross-linking reaction on the precursor composition to form a foaming material with a continuous network foam structure; wherein the basic elastomer comprises at least one of an ethylene-vinyl acetate copolymer and a polyolefin elastomer; moreover, in parts by weight, the dosage of the basic elastomer is 50-70 parts, the dosage of the hydrogenated styrene thermoplastic elastomer is 15-35 parts, and the dosage of the brominated butyl rubber is 10-25 parts. By adopting the technical scheme, the foaming material with high resilience, high damping performance and excellent durability can be prepared.

The invention relates to a wet-skid-resistant composite thermoplastic elastomer as well as a preparation method and application thereof, and belongs to the technical field of thermoplastic elastomers. The wet-skid-resistant composite thermoplastic elastomer is prepared from the following components in parts by weight: 5 to 25 parts of butyl rubber, 1 to 10 parts of liquid nitrile rubber, 1 to 10 parts of surface modified needle-shaped wollastonite, 0.2 to 1.5 parts of vulcanizing agent, 0.1 to 0.5 part of vulcanizing aid, 70 to 95 parts of thermoplastic polyurethane elastomer particles and 1 to 5 parts of compatilizer. The preparation method is simple, VOCs emission is avoided, leftover materials can be recycled, the prepared sports shoe outsole has the advantages of being excellent in wear resistance, rebound resilience, slip resistance and particularly wet-slip resistance, slipping of athletes in the sports process is effectively prevented, particularly in a humid or rainy environment, more reliable safety guarantee is provided for the athletes, and the sports shoe outsole is suitable for being used in sports. The market application value is high.

The invention discloses a fluorescent dye for shoe soles as well as a preparation method and application of the fluorescent dye, and belongs to the technical field of fluorescent materials for shoes. The fluorescent dye has a structure as shown in a formula 1. The preparation method comprises the following steps: synthesizing an intermediate through Buchwald-Hartwisting arylation reaction, and carrying out Suzuki coupling to obtain a target product. The dye inhibits aggregation fluorescence quenching through a rigid plane structure and a deuterated group, the HOMO-LUMO energy gap is regulated to 2.8-3.2 eV, the dye has the broad band emission of 450-600 nm, and the fluorescence quantum efficiency reaches 0.55-0.75. When the brominated butyl rubber is applied to a sole formula, the brominated butyl rubber comprises the following components in parts by weight: 40-60 parts of brominated butyl rubber, 0.1-2 parts of fluorescent dye and the like, and a finished product is prepared by mixing, vulcanizing and foaming. Compared with a traditional dye, the fluorescence intensity is improved, the photooxidation resistance is enhanced, the dissolution rate is reduced by 60% or above, and the dye has excellent humidity and heat resistance and material compatibility.

The utility model discloses a carcass composite piece for improving exposed lines in a tire, which comprises an airtight layer, a transition layer, a carcass, a carcass rubber sheet, a tire shoulder pad rubber, a tire crown, a tire sidewall and a carcass body rubber, the transition layer is paved on the airtight layer, the carcass is paved on the transition layer, the tire shoulder pad rubber is paved on the carcass and is positioned on the shoulder part of the tire, and the tire crown is paved on the tire shoulder pad rubber. The tire shoulder pad rubber is laid at the joint of the tire body and the tire shoulder pad rubber, the tire body rubber is arranged at the joint of the transition layer and the tire body and located at the tire shoulder, and the tire body rubber sheet is laid at the joint of the tire body and the tire shoulder pad rubber and located at the tire shoulder. The problems that gaps between tire body cord threads are increased, cord thread rubber materials are insufficient, and butyl rubber permeates into an air tight layer due to inflation shaping expansion are effectively solved, and when existing equipment is free of space transformation or capital is insufficient, the problem that threads are exposed in a tire due to the fact that the size and quality of half parts fluctuate, the Mooney viscosity of a transition layer is too low, and the assumed stretching value of the tire body cord threads is too large is effectively solved.

The utility model discloses a gas sampling device for environmental monitoring, which particularly relates to the field of environmental monitoring and comprises a sampling box, and an auxiliary sampling mechanism is mounted in the sampling box. By arranging the auxiliary sampling mechanism, the detection accuracy of environmental gas is improved, the whole device is placed in an environment needing to be monitored, gas in the environment needing to be monitored is sucked in through the sampling pipe by starting the pump body, the gas passes through the pump body and then is transmitted to the injection pipe through the corrugated pipe, and therefore the fixed disc is controlled to move downwards through the hydraulic rod; the injection pipe penetrates through the first butyl rubber plug and the second butyl rubber plug, gas is input into the gas storage tank to be stored, the gas is compressed through the hydraulic rod after being input, the injection pipe is arranged in the processing cavity, and meanwhile the gas meter automatically records and displays the volume or concentration of the gas in the gas storage tank. In the sampling and discharging process, multiple safety measures are taken, and the gas collection sealing effect is improved.

The invention belongs to the technical field of medical materials, and particularly relates to an oral liquid film-covered rubber plug and a preparation method thereof.The oral liquid film-covered rubber plug is characterized in that vulcanized halogenated butyl rubber serves as a base material piece, a functional film is bonded to the surface of the base material piece through a hot-pressing composite technology, and the functional film is prepared by taking ethylene-vinyl acetate copolymer with the VA mass ratio being 28-33% as a base material layer; an ethylene-vinyl acetate copolymer with the mass ratio of VA being 18-22% is used as a transition layer, and polytetrafluoroethylene or high-density polyethylene is used as a functional layer. The novel laminated rubber plug with excellent sealing performance, chemical stability and sterilization compatibility is prepared by utilizing a gradient composite structure and a multi-step process optimization technology, and the laminated rubber plug is simple in preparation method, easy to process and form and wide in application prospect.

The invention relates to a hydroxyl-terminated hyperbranched polyester modified hindered phenol composite material and a butyl rubber damping material prepared from the hydroxyl-terminated hyperbranched polyester modified hindered phenol composite material. The hydroxyl-terminated hyperbranched polyester modified hindered phenol composite material is introduced into a butyl rubber system as a functional additive, on one hand, hydrogen-bond interaction can be formed between the hindered phenol composite material and a polar side group in a rubber matrix, when external stress or vibration is applied, hydrogen bonds in the material are weakened or broken, and new hydrogen bonds are continuously formed, so that the service life of the material is prolonged; in the process, a large amount of energy of a system is consumed, mechanical energy is converted into internal energy, and the damping performance of the composite material is improved; on the other hand, the glass transition temperature of the rubber material can be changed, so that the effect that the optimal damping use temperature range is adjustable is achieved, and the problem that use conditions are limited due to the fact that the glass transition temperature of butyl rubber is low is solved; and meanwhile, the wider damping temperature range and the better stripping performance also conform to the diversification and functionalization development trend of the current non-vulcanized rubber damping material.

The utility model relates to the technical field of butyl rubber plug production, in particular to butyl rubber plug surface impurity flushing equipment which comprises a rotating cylinder, a fixed cylinder and a water collecting tank, and a plurality of mesh holes are formed in the circumferential face of the rotating cylinder and the circumferential face of the fixed cylinder. And the fixed cylinder is positioned above the tank opening of the water collecting tank and is obliquely arranged. The butyl rubber plug cleaning device is provided with the fixed cylinder which cannot rotate and the rotating cylinder which rotates in the fixed cylinder, a plurality of partition plates are fixed on the outer side of the rotating cylinder, a cavity formed between the fixed cylinder and the rotating cylinder is divided into a plurality of isometric cleaning spaces, the butyl rubber plug is pushed to the top from the bottom of the fixed cylinder by the partition plates, the butyl rubber plug is turned over and stirred, and the butyl rubber plug is cleaned. The stirring degree of the butyl rubber plugs in the cleaning space is increased through the vibration assembly in a vibration mode, meanwhile, the multiple downward sprayers are arranged in the rotating cylinder and on the outer side of the fixed cylinder, the sprayers conduct spray washing on the cleaning space, the butyl rubber plugs are comprehensively washed in the stirring process, and therefore the washing efficiency is improved.

The utility model relates to the technical field of medicine packaging, and discloses a puncture-resistant halogenated butyl rubber plug which comprises a rubber plug body, the rubber plug body comprises a puncture hole, a mounting groove is formed in the puncture hole, an injection hole is formed in the bottom of the rubber plug body, and the puncture-resistant halogenated butyl rubber plug is arranged in the mounting groove. And a plurality of groups of rubber gaskets are fixedly mounted on the outer surface of the rubber plug body. The multiple sets of limiting plates can be in an open state by means of continuous descending of the injector, the drainage hole and the injection hole are in a corresponding state, and therefore it is guaranteed that a needle of the injector can enter a medicine bottle, and when the injector leaves from the rubber plug body, due to the arrangement of the buffer spring, the needle can be prevented from entering the medicine bottle. The multiple sets of limiting plates can be restored to the closed state through elasticity, so that it is avoided that liquid medicine seeps from holes or makes contact with air, the dosage of the liquid medicine is reduced or the liquid medicine goes bad, the sealing performance in the medicine bottle can be kept for a long time, the medicine is kept in a relatively stable environment, and the expiration date of the medicine is prolonged.

The utility model discloses toughened hollow glass butyl rubber coating device, including glass body, mechanical arm, conveying roll still includes, glue outlet subassembly, butyl rubber passes through the discharge of glue outlet subassembly, cleaning part, carries out the cleaning to glue outlet subassembly, promotes subassembly, and the glass body is promoted to the oblique upper side. The utility model has the beneficial effects that, through the cooperation operation of glue outlet subassembly and cleaning part, can clean the position of export in real time, avoid the hardening of butyl rubber of export position, indirectly improve the production quality, through the effect of promoting subassembly, can move glass body to the designated station actively, avoid the position of export and the scratch of conveying roll.

This invention provides a modified glass fiber, glass fiber reinforced butyl hot melt adhesive, and their preparation method. The modification method of the glass fiber includes: mixing a silane coupling agent with ethanol, stirring and hydrolyzing to obtain a silane coupling agent solution; placing the glass fiber in the silane coupling agent solution, stirring and reacting at 40-80℃ for 4-6 hours, then filtering, and curing the obtained solid product at 100-150℃ for 0.5-2 hours to obtain pre-modified glass fiber; immersing the pre-modified glass fiber in a toluene solution containing furanylsilane coupling agent, reacting under inert gas protection at 70-90℃ for 1-3 hours, and performing graft modification treatment to obtain the modified glass fiber. The use of silane coupling agent and furanylsilane coupling agent to introduce dynamic covalent bonds, synergistically modifying the glass fiber with a bilayer coupling agent, and introducing the modified glass fiber into the butyl rubber system, can effectively improve the mechanical properties and aging resistance of the butyl rubber while maintaining its original water tightness and air tightness.

The environment-friendly nuclear power high-voltage power cable comprises a cable body, and the cable body comprises a conductor, a semi-conductive shielding layer, an insulating layer, a filling layer, a belting layer, a waterproof layer, an armor layer and an outer protective layer from inside to outside in sequence; the semi-conductive shielding layer is made of a low-smoke halogen-free cross-linked polyolefin semi-conductive material; the insulating layer is made of a radiation-resistant low-smoke halogen-free cross-linked polyolefin composite material; the filling layer is a low-smoke halogen-free polypropylene filling rope; the belting layer is made of a low-smoke halogen-free polypropylene and water-based butyl rubber composite material; the semi-conductive shielding layer tightly wraps the outer side of the conductor, the semi-conductive shielding layer is made of a low-smoke halogen-free cross-linked polyolefin semi-conductive material, is used for uniformizing an electric field on the surface of the conductive wire core and preventing point discharge, and is firmly bonded with the adjacent insulating layer, and the insulating layer is made of a radiation-resistant low-smoke halogen-free cross-linked polyolefin composite material, so that the radiation-resistant low-smoke halogen-free cross-linked polyolefin semi-conductive material has good radiation resistance. And the arrangement of the filling layer, the belting layer and the outer sheath layer improves the comprehensive performance of the cable body and meets the halogen-free, low-smoke, low-toxicity and environment-friendly requirements of the cable.

The invention discloses a sol tower and application thereof. A barrel of the sol tower internally comprises an oil phase area A, a dissolving and separating area B, a feeding area C and a water phase area D from top to bottom in sequence; a glue solution discharge hole is formed in the top of the sol tower, and a water phase discharge hole is formed in the bottom of the sol tower; the feeding area C is provided with a colloidal particle water inlet and a solvent feeding hole; wherein the dissolving and separating area B is provided with a tower plate; the feeding area C is provided with a stirrer. The device can realize colloidal particle dissolution and efficient separation of an oil phase and a water phase in the preparation process of the basic rubber solution of butyl rubber.

Golf balls having core formulations including polybutadiene, butyl rubber, or a blend thereof, and low surface coverage dimple patterns are disclosed. The combination of low surface coverage with particular rubber formulations helps to reduce the flight of the ball while also providing improved aerodynamic consistency and maintaining the appearance of a high-performance trajectory.

The invention relates to an interlayer separant and application thereof. The interlayer separant is used between a polyurethane coating and an asphalt coiled material and is formed by a polyurethane coating, and the polyurethane coating comprises the following components: maleic anhydride modified polyurethane, silane modified polyurethane, maleic anhydride modified colloid and a solvent; the maleic anhydride modified polyurethane is obtained by reaction of raw materials including polyol, maleic anhydride, isocyanate and a catalyst; the silane modified polyurethane is obtained by reaction of raw materials including polyol, a silane coupling agent, isocyanate and a catalyst; the colloid is selected from one or a combination of more of petroleum resin, asphalt, rosin resin, terpene resin, butadiene-styrene rubber and butyl rubber; the maleic anhydride modified colloid is obtained by reacting raw materials including maleic anhydride, colloid and an initiator. The interlayer separant can isolate migration of auxiliaries such as a plasticizer in a traditional polyurethane coating and improve the compatibility and bonding performance of the traditional polyurethane coating and an asphalt coiled material.

The application belongs to the technical field of rubber mats, and provides a high-damping low-dynamic-static-ratio vibration and noise reduction rubber mat, a preparation method and application thereof, raw materials including, by mass fraction, natural rubber 25-50 parts, halogenated butyl rubber 45-65 parts, epoxy natural rubber 6-12 parts, reinforcing agent 40-50 parts, brominated p-t-octylphenol formaldehyde vulcanized resin 9-15 parts, zinc oxide 4-6 parts, stearic acid 1-3 parts, antioxidant 3.4-4.5 parts, silane coupling agent 3-5 parts, accelerator 4-5 parts, and sulfur 0.8-1.2 parts. The rubber mat has high-frequency high-damping low-dynamic-static-ratio characteristics and excellent fatigue resistance.

To provide a rubber composition and a tire excellent in overall performance of hardness and crack growth resistance.SOLUTION: The rubber composition comprises a rubber ingredient containing a butyl-based rubber, a cyclic amine having double bonds in the ring, and carbon black having a 24M4DBP oil absorption of 170ml / 100g or more.SELECTED DRAWING: None

This invention belongs to the field of tire rubber material technology and discloses a self-healing, puncture-resistant rubber composition and its preparation method. The composition uses solution-polymerized styrene-butadiene rubber, cis-butadiene rubber, and halogenated butyl rubber as the rubber matrix, and incorporates nano-silica, bio-based organic acid surface-modified carbon black, hydrophobically modified lignin, PHA, TESPT coupling agent, compound compatibilizer, and a vulcanization system composed of diphenylurea and sulfur. This invention optimizes interfacial compatibility and crosslinking uniformity through the synergistic effect of multiple components, significantly improving the low-temperature flexibility, abrasion resistance, wet skid resistance, puncture resistance, and puncture repair performance of the rubber, while reducing rolling resistance. It effectively overcomes the problems of rubber embrittlement and uneven filler dispersion in cold environments, and can significantly improve the range and driving safety of pure electric vehicles in low-temperature environments. The preparation method is simple and suitable for large-scale industrial production.

The invention discloses a preparation method of butyl rubber for edge sealing of a photovoltaic module, and belongs to the technical field of adhesives. The preparation method comprises the following steps: putting liquid butyl rubber, polyisobutene and self-made resin into a kneading kettle, stirring and kneading for 1-2 hours at the temperature of 120-130 DEG C, raising the temperature to 160-170 DEG C, then adding a filler and a water absorbent, stirring for 1-2 hours, lowering the temperature to 100-110 DEG C, then adding a catalyst and an adhesive, stirring for 0.5-0.8 hour under the vacuum degree of-0.095-0.011 Mpa, discharging, and finally, cooling to the room temperature to obtain a finished product. The butyl rubber for edge sealing of the photovoltaic module is obtained. The butyl rubber for edge sealing of the photovoltaic module prepared by the invention has excellent flame retardant property and mechanical property.