692 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 provides medium-high molecular weight high-activity polyisobutene and a preparation method thereof, and the preparation method comprises the following steps: mixing hydrogen peroxide and a butyl rubber solution, and reacting for 0.5-20 hours at 20-80 DEG C under the catalytic action of a catalyst to obtain epoxidized butyl rubber; dissolving epoxidized butyl rubber to obtain an epoxidized butyl rubber solution; adding an oxidative cracking reagent into the epoxidized butyl rubber solution, and reacting at 0-80 DEG C for 0.5-20 hours to obtain a polyisobutylene solution; the medium-high molecular weight high-activity polyisobutene has the characteristics of high molecular weight, narrow distribution and higher end group activity, and can be applied to the application fields of traditional high-activity polyisobutene such as additives of lubricating oil, fuel oil, rubber and the like; and the product can be used as a sealing material, a waterproof water-retaining agent, a rubber and plastic modifier and the like, can meet wider application requirements, and has good industrial application value.

The utility model discloses an integrated assembly machine for a perovskite component before lamination. The integrated assembly machine comprises a component conveying line, and an adhesive tape pasting station, a bus bar pasting station, a drainage tape pasting station and a butyl rubber pasting station which are sequentially arranged along the conveying direction of the component conveying line, the adhesive tape pasting station, the bus bar pasting station, the drainage belt pasting station and the butyl rubber pasting station are each provided with a jacking mechanism for jacking a photovoltaic module and a correcting mechanism for correcting the photovoltaic module, and the adhesive tape pasting station is provided with an adhesive tape pasting device above the module conveying line. A bus bar pasting device is arranged at the position, above the assembly conveying line, of the bus bar pasting station, a drainage belt pasting device is arranged at the position, above the assembly conveying line, of the drainage belt pasting station, and a butyl rubber pasting device is arranged at the position, above the assembly conveying line, of the butyl rubber pasting station. According to the utility model, the overall length of the assembly machine is shortened, and the production efficiency is also 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 the technical field of composite materials, in particular to a carbon fiber composite material with both interface performance and damping performance and a preparation method of the carbon fiber composite material. The invention relates to a carbon fiber composite material with interfacial properties and damping properties. The carbon fiber composite material is prepared from the following components in percentage by weight: 65-75% of carbon fibers, 25-35% of a modified butyl rubber resin matrix, 0.5-2% of a butyl rubber film, 0.5-1% of a polyurethane-based sizing agent and 0.1-0.5% of a silane coupling agent, the in-situ growth CNTs technology is adopted, the shearing strength of a fiber-resin interface can be remarkably improved, meanwhile, the butyl rubber film is embedded into every two layers of carbon fiber prepreg of a sandwich structure, directional energy dissipation is achieved through controllable shearing deformation, excellent environmental stability is achieved, the damping performance and interface performance loss after damp-heat aging is lower than 15%, and the damping performance and the interface performance loss after damp-heat aging are lower than 15%. The industrial problem that a traditional carbon fiber composite material is strong but not tough and rigid but not soft is successfully solved, and the carbon fiber composite material is particularly suitable for application requirements of high-end competitive sports equipment.

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.

Provided are: an electrolytic capacitor in which a decrease in electrostatic capacity is suppressed even in a high-temperature environment; and a manufacturing method. An electrolytic capacitor comprises: a capacitor element having a positive electrode foil, a negative electrode foil, an electrolytic solution, and a solid electrolyte layer; a case that accommodates the capacitor element; and a sealing body for sealing the case. The sealing body has an elastic body containing an elastomer. The elastomer contains butyl rubber, and is contained in the elastic body at 31 wt% or more. The electrolytic solution contains glycerin in the amount of 40 wt% or more in the solvent of the electrolytic solution.

The invention relates to a butyl hot melt adhesive, which is prepared from the following raw materials in parts by weight: 10 to 30 parts of butyl rubber, 5 to 15 parts of polyisobutene, 25 to 50 parts of amorphous polyolefin, 10 to 30 parts of organic silicon modified polymer, 0.1 to 1 part of lubricant, 0.1 to 1 part of antioxidant, 1 to 30 parts of modified filler and 1 to 20 parts of carbon black, the organic silicon modified polymer comprises a polyurethane polymer terminated by a silane coupling agent. The butyl hot melt adhesive provided by the invention has the characteristics of difficulty in flowing after being heated, good high-temperature stability and excellent bonding performance, can be used for bonding and sealing a car lamp, and can ensure that the car lamp is stable in structure in a high-temperature environment, so that the car lamp can still work normally in hot weather or when the car lamp is close to high-temperature parts such as an engine, and the service life of the car lamp is prolonged.

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 invention provides a magnetic hot-melt flame-retardant damping material. The magnetic hot-melt flame-retardant damping material is prepared from the following raw materials in parts by weight: 5-15 parts of an ethylene-vinyl acetate copolymer; 2-6 parts by weight of butyl rubber; 1-4 parts by weight of a styrene thermoplastic elastomer; 8-15 parts by weight of a tackifier; 7.5-17 parts by weight of a filler; 10-20 parts by weight of a flame retardant; 44-56 parts by weight of magnetic powder; and 1-4 parts by weight of a softening agent. Compared with the prior art, the magnetic hot-melt flame-retardant damping material provided by the invention adopts specific components with specific contents to realize relatively good overall interaction, and the obtained magnetic hot-melt flame-retardant damping material has excellent flame retardance, good vibration absorption and noise reduction effects, good flexibility, high-temperature baking resistance, high-temperature adhesion and washing resistance; and the product has the advantages of good storage stability, long shelf life and light weight, and is suitable for sound insulation, noise reduction and flame retardance near an automobile body and a battery pack.

The invention relates to a lightweight foaming sole material, which comprises the following raw materials by mass: 20-30% of a PA / EBA modified blend; 10% to 20% of a TPEE / EBA modified blend; 10%-30% of an ethylene-butyl acrylate copolymer (EBA); 8%-15% of an ethylene-octylene copolymer POE; 8%-15% of brominated butyl rubber BIIR; 2%-3% of talcum powder; 5%-10% of a coupling agent; 0.5%-1% of a lubricant; 1%-2% of a foaming aid; 0.3%-1% of a cross-linking agent; and 3%-7% of a foaming agent. The foaming sole material provided by the invention has the advantages of high elasticity, tear resistance and wrinkle resistance; the preparation method is simple and low in production cost, and has a wide application prospect in the field of foamed sole materials.

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 provides a three-dimensional noise reduction structure system drainage pipe design method, and belongs to the technical field of building drainage pipes. Discretization analysis is carried out on a three-layer structure of a spiral flow guide structure PVC pipe inner wall, an asymmetric butyl rubber damping interlayer and gradient density foamed aluminum by establishing a three-dimensional noise reduction model; and constructing a vibration transfer matrix and a noise reduction key point matrix. A spiral flow guide structure is optimized through hydraulic calculation, thickness distribution of a rubber damping layer is determined through acoustic impedance testing, foamed aluminum porosity gradient design is carried out, and a small-section noise reduction cross-correlation index is introduced to evaluate the synergistic effect of adjacent structures. The optimal material ratio is solved through a three-dimensional noise reduction optimization equation set, the noise reduction effect is predicted in combination with an acoustic response deep learning model, standardized module design is finally formed through miniaturized sample piece test verification and parameter correction, and organic unification of full-band noise reduction and modular design of the drainage pipe is achieved.

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 novel cable semi-conductive buffer layer and a preparation method thereof, and relates to the field of electrical materials. The semi-conductive buffer layer comprises a semi-conductive buffer strip and a rubber coating located on the surface of the semi-conductive buffer strip, the semi-conductive buffer strip is a semi-conductive water-blocking tape or a semi-conductive nylon tape, and the rubber coating comprises butyl rubber, a conductive filler, a functional additive, paraffin and a vulcanizing agent. In order to solve the technical problem of poor water resistance of the cable semi-conductive buffer layer, the rubber coating is arranged on the surface of the semi-conductive buffer strip, butyl rubber in the rubber coating has good air tightness, permeation of water molecules is effectively prevented, the risk of breakdown does not exist when the cable runs in a humid environment for a long time, and the service life of the cable is prolonged. And the conductive filler is uniformly dispersed in the rubber coating, so that the volume resistivity and the surface resistance of the buffer layer can be maintained or reduced, the conductivity and the field intensity homogenization effect are good, and the application requirements are met.

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 relates to the technical field of hydraulic engineering materials, and particularly discloses a corrosion-resistant rubber dam and a preparation method thereof. The rubber dam is prepared by the following steps: forming a composite matrix (in a mass ratio of 60: 25: 15) by using ethylene propylene diene monomer (EPDM), brominated butyl rubber (BIIR) and hydrogenated butadiene-acrylonitrile rubber (HNBR), adding silane coupling agent modified nano zirconium oxide-aluminum oxide composite powder (ZrO2-Al2O3 with the particle size of 30-80nm) as a corrosion-resistant filler, and carrying out two-stage mixing and gradient vulcanization processes. The tensile strength retention rate of the obtained product in a corrosive environment with the pH value of 1-14 is larger than or equal to 92%, the ultraviolet aging resistance life reaches 30 years, the air tightness is improved by 5 times (the leakage rate is smaller than or equal to 2% / month) compared with a traditional EPDM dam, and the dam is suitable for high-corrosive water areas such as seawater backflow and acid rain.

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 invention relates to photovoltaic module four-side sealing butyl rubber lacking detection equipment and a detection method, and relates to the technical field of photovoltaic module detection. Comprising a shell, a feeding table, a detection building and a detection unit. According to the detection building, a framework is connected with a plurality of layered and stacked bearing tables, and each bearing table forms a rectangular structure through spliced bearing rods and is provided with a pressure sensor and a digital label. The detection unit comprises a driving assembly, a camera and a detection light source and can move along the edge of the photovoltaic assembly for imaging detection. The equipment is combined with a specific wave band light source and a camera imaging technology, butyl rubber and an EVA film are accurately distinguished, and rubber shortage detection is completed. The device achieves the effect of efficiently and accurately detecting the lack of butyl rubber for sealing the four sides of the photovoltaic module, and meanwhile, assists an operator in processing an NG piece through a three-color lamp and an interaction screen, thereby improving the automation and reliability of the detection process.

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 invention relates to the technical field of sealing materials, in particular to a waterproof butyl rubber sealing material and a preparation method thereof. The problem that a butyl rubber sealing material is poor in waterproof performance and aging resistance is solved. The butyl rubber and the hydroxyl-terminated fluorosilicone rubber are blended, and plasma treatment is combined, so that the synergistic enhancement of the internal and external waterproof performance of the sealing material body is realized; the surface of the modified carbon nanotube prepared by an acidification-coupling-grafting process is rich in polar groups and polymer chains, and the modified carbon nanotube and bentonite form a synergistic enhancement structure, so that the permeation path of water molecules along a rubber matrix is prolonged, and the waterproof performance of the sealing material is improved; through the synergistic effect of europium-doped nano cerium oxide and an ultraviolet absorbent, the europium-doped nano cerium oxide and the ultraviolet absorbent form a spectrum complementary effect on a photoprotection mechanism; the rubber compound is treated through a three-section vulcanization process, and a sulfur-phenolic resin composite vulcanization system is matched, so that the aging resistance of the sealing material is improved, and the sealing material can be used for sealing or packaging joints or covers.

An elastomeric composition is disclosed. The elastomeric composition includes, per 100 parts by weight of rubber (phr): about 20 to about 40 phr of a polybutadiene having a cis-1,4 linkage content of at least 95%; about 40 to about 70 phr styrene / butadiene copolymer; about 5 to about 30 phr natural rubber or polyisoprene; a curative agent; an antioxidant; about 1 to about 20 phr carbon black; about 1 to about 30 phr plasticizing oil; about 40 to about 80 phr silica; about 1 to about 15 phr silane coupling agent and about 5 to about 30 phr of a polymer selected from the group consisting of an ethylene-propylene-diene terpolymer, butyl rubber, poly(isobutylene-co-para-methylstyrene) and poly(isobutylene-co-para-methylstyrene-co-isoprene) terpolymer.

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 discloses a preparation process of halogenated butyl rubber for improving high temperature resistance of a tire. According to the invention, the high temperature resistance is obviously improved through multi-scale filler cooperation and interface strengthening. The pre-modification treatment of nano aluminum oxide and a silane coupling agent Si69 is combined with a segmented temperature control process in an internal mixing stage, so that nano particles are uniformly dispersed in a rubber matrix, an efficient heat-conducting network is formed, and the dynamic heat generation is reduced by 20% or above; a compound filling system of a modified montmorillonite organic intercalation and carbon black N660 inhibits oxygen permeation by using a lamellar barrier effect, and is matched with the free radical capture capability of nano cerium oxide CeO2, so that the tensile strength retention rate of the rubber material is increased to 90% after the rubber material is thermally aged for 96 hours at the high temperature of 150 DEG C. Meanwhile, due to the gradient vulcanization design of the microencapsulated sulfur and the dicumyl peroxide DCP, a C-C bond and C-S bond coexisting dual cross-linked network is constructed in the dynamic vulcanization stage, the high-temperature compression permanent deformation is reduced by 35%, and the service life of the tire under the extreme working condition is remarkably prolonged.

The invention belongs to the technical field of polymer-based composite foam materials, and particularly relates to a low-density and high-mechanical-property brominated butyl rubber composite foam material and a preparation method thereof.The preparation method comprises the following steps that raw brominated butyl rubber, reinforcing filler, a foaming agent and the like are mixed through an internal mixer; performing secondary banburying to obtain a uniformly mixed brominated butyl rubber compound; step 3, discharging bubbles in the rubber compound by using an open mill; and 3, carrying out high-temperature curing foaming on the rolled rubber compound by using a plate vulcanizer to obtain the low-density and high-performance brominated butyl rubber foaming composite material. The obtained brominated butyl rubber composite material with low density and high mechanical property has the characteristics of simple preparation process, light weight, uniform cells, high cell density and high tensile strength; the density of the prepared foamed rubber is 0.35 g / cm < 3 >, and is lighter than that of natural rubber by more than 60%; the invention is suitable for the fields of building materials, automobile industry, medical equipment and the like.