6261results about "Special tyres" patented technology

Resonant sensors for environmental health risk detection are disclosed. A mechanical member may include at least one meso-scale or micro-scale resonator disposed on a surface of the mechanical member. Additionally, the at least one meso-scale or micro-scale resonator may include a plurality of first carbon particles configured to uniquely resonate in response to an electromagnetic ping based at least in part on a concentration level of the first carbon particles within the at least one meso-scale or micro-scale resonator. Further, the at least one meso-scale or micro-scale resonator may be configured to resonate at a first frequency in response to the electromagnetic ping when the mechanical member is in a first state, and may be configured to resonate at a second frequency in response to the electromagnetic ping when the mechanical member is in a second state.

A disclosed airborne vehicle includes split-ring resonators (split ring resonators), which may be embedded within a material. Each split ring resonator may be formed from a three-dimensional (3D) monolithic carbonaceous growth and may detect an electromagnetic ping emitted from a user device. Each split ring resonator may generate an electromagnetic return signal in response to the electromagnetic ping. The electromagnetic return signal may indicate a state of the material in a position proximate to a respective split ring resonator. In some aspects, each may resonate at a first frequency in response to the electromagnetic ping when the material is in a first state, and may resonate at a second frequency in response to the electromagnetic ping when the material is in a second state. A resonant frequency of the 3D monolithic carbonaceous growth may be based on physical characteristics of the material.

The present invention addresses the problem of providing a rubber composition with which it is possible to improve the ratio of a sustainable material in a rubber product and to improve the elongation at break (EB) after heat deterioration. The rubber composition is characterized in that: it contains a rubber component (A), recovered carbon black (B), a quinoline-based anti-aging agent (C), and a zinc oxide (D); in that the total styrene content of the rubber component (A) is less than or equal to 5 mass%; and in that the mass ratio [zinc oxide (D) / quinoline-based anti-aging agent (C) ] between the zinc oxide (D) and the quinoline-based anti-aging agent (C) is greater than 0 and less than or equal to 3.0.

Disclosed herein are tire tread rubber compositions comprising a specified elastomer component, reinforcing silica filler, a specified hydrocarbon resin, liquid plasticizer, and a cure package. The elastomer component includes styrene-butadiene rubber and high cis linear polybutadiene. Use of the disclosed ingredients may result in a tire tread having particular properties, as discussed further herein.

A disclosed water droplet sensing system and methods using split-ring resonators, which may be embedded within a material. In use, a component includes at least one split-ring resonator (SRR) which may be embedded within a material of the component. The at least one SRR may be formed from a composite material. Additionally, the at least one SRR may be configured to form a signal that is correlated with a concentration of water proximate to the at least one SRR. In some aspects, each SRR may resonate at a first frequency in response to an electromagnetic ping when the material is in a first state, and may resonate at a second frequency in response to the electromagnetic ping when the material is in a second state. A resonant frequency of the material may be based on physical characteristics of the material (including fluid accumulation on the material).

A disclosed airborne vehicle includes split-ring resonators (split ring resonators), which may be embedded within a material. Each split ring resonator may be formed from a three-dimensional (3D) monolithic carbonaceous growth and may detect an electromagnetic ping emitted from a user device. Each split ring resonator may generate an electromagnetic return signal in response to the electromagnetic ping. The electromagnetic return signal may indicate a state of the material in a position proximate to a respective split ring resonator. In some aspects, each may resonate at a first frequency in response to the electromagnetic ping when the material is in a first state, and may resonate at a second frequency in response to the electromagnetic ping when the material is in a second state. A resonant frequency of the 3D monolithic carbonaceous growth may be based on physical characteristics of the material.

A disclosed apparatus includes sensors incorporated into adhesive material. In use, an apparatus may comprise an adhesive material and at least one split-ring resonator (SRR) disposed on or in the adhesive material. Additionally, the at least one SRR is formed from a carbon-containing material, and the adhesive material is a non-elastomeric material or a semi-rigid material. In some aspects, each SRR may resonate at a first frequency in response to an electromagnetic ping when the adhesive material is in a first state, and may resonate at a second frequency in response to the electromagnetic ping when the adhesive material is in a second state. A resonant frequency of the adhesive material may be based on physical characteristics of the adhesive material.

Disclosed in the present invention are a rubber filler, a rubber composite material containing same, a preparation method therefor, and the use thereof. The rubber filler comprises polydivinylbenzene microspheres and polydopamine-modified white carbon black loaded onto the polydivinylbenzene microspheres, the mass ratio of the polydivinylbenzene microspheres to the polydopamine-modified white carbon black being 1:(0.5-20). The rubber composite material comprises raw rubber of a solution-polymerized rubber and the rubber filler, the dosage of the rubber filler being 10-60 wt% of the dry-basis mass of the raw rubber of the solution-polymerized rubber. The present invention uses as the filler the polydivinylbenzene microspheres onto which the polydopamine-modified white carbon black is loaded, thereby solving the problems that white carbon black is prone to agglomeration and the binding force between white carbon black and rubber is poor. The rubber composite material obtained by the present invention is suitable for manufacturing green tires.

Resonant sensors for environmental health risk detection are disclosed. A mechanical member may include at least one meso-scale or micro-scale resonator disposed on a surface of the mechanical member. Additionally, the at least one meso-scale or micro-scale resonator may include a plurality of first carbon particles configured to uniquely resonate in response to an electromagnetic ping based at least in part on a concentration level of the first carbon particles within the at least one meso-scale or micro-scale resonator. Further, the at least one meso-scale or micro-scale resonator may be configured to resonate at a first frequency in response to the electromagnetic ping when the mechanical member is in a first state, and may be configured to resonate at a second frequency in response to the electromagnetic ping when the mechanical member is in a second state.

The present invention addresses the problem of providing a pneumatic tire in which a reduction in tire performance is mitigated despite using polyamide fibers with low amide density. The solution is a pneumatic tire characterized by comprising a carcass layer (50), belt layers (60A, 60B), and a belt reinforcement layer (70A), wherein reinforcing cords (50-1, 70A-1) in the carcass layer (50) and / or the belt reinforcement layer (70A) contains polyamide fibers having an amide density of 14.0 or less, and (i) when a gauge thickness A from the outer circumferential surface on the tire inner-surface side of the reinforcing cords (50-1) of the carcass layer (50) to the tire inner surface is measured at 100 equally spaced points, the average of the gauge thickness A is 1.5 mm or less, or (ii) when a gauge thickness D from the outer circumferential surface on the tire outer-surface side of the reinforcing cords (70A-1) of the belt reinforcement layer (70A) to the tire outer surface is measured at 100 equally spaced points, the gauge thickness D is 6.0 mm or less at 80% of the measurement points or more.

The present invention aims to provide tire rubber composition with significantly improved overall performance in terms of wet grip performance and fuel economy, and pneumatic tires including the rubber compositions. The tire rubber compositions of the present invention have a tan δ versus temperature curve whose peak tan δ and half width satisfy the following relationship (1):Peak tan δ / Half width≥0.025  (1).

The purpose is to provide rubber compositions and pneumatic tires which have reduced changes in hardness over time. The present invention relates to a rubber composition containing a copolymer obtained by copolymerizing an aromatic vinyl compound and a conjugated diene compound, the rubber composition having a heat aging resistance index defined by equation (1) of 10 or less.

[Problem] To provide a method for efficiently producing a chemical product from waste tires by improving steps in a series of processes and also efficiently obtaining a carbide. [Solution] Provided is a method for producing a chemical product and a carbide, the method comprising: a thermal decomposition step for obtaining a first gas, a thermal decomposition oil and a residue through thermal decomposition of fragmented waste tires; a carbide recovery step for recovering a carbide from the residue; a low temperature hydrogenation step for subjecting a raw material oil containing at least a portion of the thermal decomposition oil to a low temperature hydrogenation treatment at a temperature of 180-350ºC to obtain a low temperature hydrogenated oil; a hydrocracking step for subjecting a raw material oil that contains at least a portion of the low temperature hydrogenated oil to a hydrocracking treatment at a temperature higher than that in the low temperature hydrogenation treatment so as to obtain a second gas, a light fraction having a boiling point of 350°C or lower and a heavy fraction having a boiling point of higher than 350°C; and a steam cracking step for steam cracking a steam cracking raw material oil that contains at least a portion of the light fraction so as to obtain a chemical product and a raw material for carbide production, which comprises a heavy fraction having a 10% distillation temperature of 190°C or higher. The thermal decomposition temperature in the thermal decomposition is 350-750ºC.

The invention relates to the technical field of waste rubber recovery, in particular to a method for preparing a rubber compound by recycling waste rubber and the prepared rubber compound. The high-shear mechanical desulfurization technology is combined, the desulfurization efficiency is further improved through the synergistic effect of various components in the compound auxiliary, and meanwhile the plasticity of the waste rubber and the compatibility of the waste rubber and new rubber are enhanced. The method not only can effectively destroy the cross-linked structure of the waste rubber, but also can be used for preparing a high-performance rubber compound product by mixing the waste rubber with a new rubber material through a subsequent mixing process, and is widely applied to manufacturing high-strength and wear-resistant rubber products, such as solid tires and the like.

The present invention addresses the problem of providing a rubber composition with which it is possible to improve the ratio of a sustainable material in a rubber product and to improve the elongation at break (EB) after heat deterioration. The rubber composition is characterized in that: it contains a rubber component (A), a recovered carbon black (B), a quinoline-based anti-aging agent (C), and a zinc oxide (D); and in that the mass ratio [zinc oxide (D) / quinoline-based anti-aging agent (C) ] between the zinc oxide (D) and the quinoline-based anti-aging agent (C) is greater than 0 and less than or equal to 1.8.

Provided is a wet masterbatch production method capable of producing a wet masterbatch which exhibits excellent dispersion properties with respect to fillers containing recovered carbon black and thus contributes to improving sustainability. Specifically provided is a wet masterbatch production method characterized by comprising: a slurry preparation step for preparing a slurry solution by dispersing a filler containing recovered carbon black in water; a mixing step for mixing the slurry solution and a rubber latex solution; and a stirring step for stirring the slurry solution and the rubber latex solution subsequent to the mixing step in a liquid phase.

The invention provides a method for reducing the rubber crack propagation rate and a tire, and relates to the technical field of tire rubber.The method for reducing the rubber crack propagation rate comprises the steps that the maximum tearing energy in an application scene is obtained; determining the addition amount of organic polysulfide and sulfur in a vulcanizing agent according to the maximum tearing energy; and mixing the vulcanizing agent with the raw materials to obtain the target rubber material. When the maximum value of the tearing energy is large, the organic polysulfide is added into the sulfur, the organic polysulfide contains a plurality of thioalkyl chain segments, and in the vulcanization process, flexible alkyl chains can be connected into rubber macromolecules to form a composite cross-linked network structure which is more stable and higher in strength, so that the breaking tensile strength and the tearing strength of tire rubber are improved, and the service life of the tire rubber is prolonged. And the expansion rate of cracks can be reduced while bearing relatively high tearing energy, so that the service life is prolonged.

Provided is a rubber composition that is capable of maintaining breaking strength even after thermal deterioration and has an improved ratio of sustainable material.　In order to solve the aforementioned problem, the present invention is a rubber composition containing a rubber component and carbon black, the rubber composition being characterized in that: the carbon black contains recycled carbon black; and after the rubber composition is vulcanized, the ratio (breaking strength after heat deterioration processing / breaking strength at room temperature) of the breaking strength after heat deterioration processing in which a heating process is performed at 100°C for 24 hours to the breaking strength at room temperature is 1.22 or lower.

The invention discloses a low-resistance and high-wear-resistance tire rubber composition as well as a preparation method and application thereof, and belongs to the technical field of rubber materials. The tire rubber composition comprises the following raw materials in parts by weight: 50-70 parts of natural rubber NR, 30-50 parts of solution polymerized styrene-butadiene rubber SSBR, 40-60 parts of modified white carbon black, 3-5 parts of zinc oxide, 1-2 parts of stearic acid, 1-3 parts of an anti-aging agent 6PPD and 2.5-3.5 parts of a vulcanization system. The prepared tire rubber material has the advantages that the rolling resistance is obviously reduced, the wear resistance is improved, the energy consumption is effectively reduced, and the requirements of new energy automobiles on high-performance tires are met. Through three-step modification treatment, the white carbon black is uniformly dispersed in a rubber matrix, and the interface bonding is firm, so that the prepared tire can reduce the rolling resistance of the tire using the tread rubber, and the tread rubber has higher wear resistance, tensile strength and elongation at break, and accords with the development direction of new energy automobiles in the future.

The application provides a masterbatch type vulcanization aid and a preparation method thereof, a rubber composition, a rubber product and a tire. The preparation method comprises the following steps: S1, pre-reaction of stearic acid, an antioxidant and a vulcanization system to obtain a pre-reaction mixture; and S2, mixing of the pre-reaction mixture with rubber to obtain the masterbatch type vulcanization aid. Under the catalysis of stearic acid, the reagents in the antioxidant and the vulcanization system react to generate active intermediates. The active intermediates have the effect of promoting vulcanization and play the role of activating accelerators in advance, so that the active intermediates can replace the role of zinc oxide. The product after reaction is mixed with rubber, and the masterbatch formed can be used to prepare rubber products such as tires without containing zinc elements, so that zinc emission can be realized, and the environment is friendly.

A method of preparing a sidewall support, the method comprising the steps of (i) providing a vulcanizable composition including an elastomer, a filler, a curative, and a eutectic composition, where the eutectic composition is a solid; (ii) fabricating the vulcanizable composition into a green sidewall support; and (iii) subjecting the green sidewall support to curing conditions.

The present invention provides a bio-based sustainable tire tread rubber composition and a preparation method thereof, and relates to the field of rubber tire manufacturing, the bio-based sustainable tire tread rubber composition is prepared from the following raw materials by weight: 10-50 phr of natural rubber, 30-90 phr of solution polymerized styrene butadiene rubber, 0-15 phr of eucommia ulmoides rubber, 30-60 phr of carbon black, 5-20 phr of a lignin reinforcing filler, 0-3 phr of a lignin-based anti-aging agent, and 1-6 phr of a conventional anti-aging agent, the formula comprises the following components in percentage by weight: 3-7 phr of zinc oxide, 0.2-2 phr of stearic acid, 1-3 phr of an accelerant and 1-4 phr of a vulcanizing agent. According to the prepared rubber material, the lignin reinforcing filler and the lignin-based anti-aging agent are used for replacing traditional carbon black filler and petroleum-based anti-aging agent products, the use amount of petroleum-based chemicals in a formula system is reduced, environmental pollution is reduced, and carbon emission is reduced; the adopted preparation process can effectively promote the dispersion of the lignin filler; in the prepared rubber composition, the eucommia ulmoides rubber is applied, so that the mechanical property and the fatigue property of vulcanized rubber can be effectively improved.

The rubber composition for a tire tread according to the embodiment contains a rubber component containing a diene rubber and vegetable granules having a surface treated with a sulfonic acid-type surfactant. The rubber composition for a tire tread has excellent on-ice performance, excellent wet performance, and excellent low heat generation property.

The invention relates to the technical field of tire production, and particularly discloses a mute cotton tire and a production method thereof. The production method of the mute cotton tire comprises the following steps: a tire inner cavity cleaning step: cleaning the tire inner cavity to remove residual substances in the tire inner cavity; an adhesive spraying step: spraying an adhesive in the inner cavity of the tire; and a mute cotton bonding step: bonding the mute cotton to the tire inner cavity sprayed with the adhesive to obtain the mute cotton tire. In the mute cotton bonding step, 7-9 sections of mute cotton are bonded. The mute cotton tire produced by the production method can effectively reduce the noise of an inner cavity of the tire and the noise caused by friction between the tire and the ground, so that the noise reduction effect is achieved; compared with a mute cotton tire produced by adopting other methods, the mute cotton tire can be reduced by 8-9 decibels in the frequency range of 200-352Hz to the maximum extent; and the noise can be reduced by 1-5 decibels in other noise frequency ranges.

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

The invention discloses a wear-resistant tire tread rubber and a preparation method thereof, belonging to the technical field of compositions of polymer compounds. The wear-resistant tire tread rubber comprises the following components, measured in parts by weight: 40-60 parts of natural rubber, 25-35 parts of styrene-butadiene rubber, 15-25 parts of isoprene rubber, 25-30 parts of modified white carbon black, 20-25 parts of composite filler, 15-20 parts of N330 carbon black, 2-3 parts of stearic acid, 1-2 parts of calcium oxide, 1-2 parts of zinc oxide, 2.5-3.5 parts of antioxidant 4020, 8-12 parts of environmentally friendly aromatic oil TDAE, 0.1-0.5 parts of polyimide, 1.2-2 parts of sulfur, 1-2 parts of accelerator TMTD, 0.5-1 parts of accelerator NOBS and 1-3 parts of anti-reversion agent HTS. The wear-resistant tire tread rubber prepared by the invention can improve the anti-wet skid capability of the tire using the tread rubber, reduce its rolling resistance, and enable the tread rubber to have higher wear resistance, tensile strength and elongation at break.

The invention discloses a preparation method of tread rubber, and belongs to the field of rubber processing. The preparation method comprises the following steps: pretreating aramid pulp, a coupling agent and a lubricant, and then adding the pretreated aramid pulp, the coupling agent and the lubricant into natural rubber to prepare aramid pulp master batch particles; the obtained aramid pulp master batch particles are added into raw materials for preparing tread rubber, and the prepared rubber material has excellent mechanical properties, wear resistance and low rolling resistance. According to the method, the dispersity and interface combination of the aramid pulp in the rubber are remarkably optimized, the comprehensive improvement of the mechanical property, the wear resistance and the rolling resistance of the tread rubber is realized, and the tread rubber has outstanding industrial application value.

To provide a rubber composition and a tire excellent in rubber strength.SOLUTION: A rubber composition for a tire includes: a rubber component including a modified polymer obtained by reacting a polymer with a polymer modifier having a nitrile oxide group and a cationic group; a cross-linking agent; carbon black; a plasticizer; and a temperature-responsive material A including a polymer having a carboxyl group. Based on the rubber component 100 pts.mass, a content of the cross-linking agent is over 0 pts.mass and less than 10 pts.mass, a content of the carbon black is over 0 pts.mass and less than 100 pts.mass, and a content of the plasticizer is over 5 pts.mass.SELECTED DRAWING: None

The invention relates to the technical field of tire rubber manufacturing, and discloses a lunar vehicle tire tread rubber composition, a mixing method thereof and a tire. The rubber composition is prepared by mixing the following raw materials based on 100 parts by weight of raw rubber: 25-75 parts by weight of silicone rubber, 10-45 parts by weight of fluororubber, 15-30 parts by weight of ethylene propylene diene monomer, 30-50 parts by weight of carbon black, 2-8 parts by weight of an active agent and 2-4 parts by weight of an anti-aging agent. The tread rubber composition has excellent weather resistance and high and low temperature resistance, can obviously improve the high and low temperature resistance, and ensures that the tread of the lunar rover tire does not generate large deformation quantity at low temperature (as low as-100 DEG C) and high temperature (as high as 140 DEG C).

The invention provides primary amino modified solution polymerized styrene-butadiene rubber and a preparation method thereof. The preparation method comprises the following steps: in a polymerization system, initiating polymerization of a butadiene monomer and a styrene monomer by taking n-butyllithium as an initiator and tetrahydrofuran as a polymerization activator to obtain a styrene butadiene rubber active chain; adding a diisocyanate compound into the polymerization system to terminate polymerization, and introducing an isocyanate group to the end part of a styrene butadiene rubber active chain to obtain a styrene butadiene rubber solution; and adding a terminator into the styrene-butadiene rubber solution, stirring, separating out precipitate, and drying to obtain the primary amino modified solution polymerized styrene-butadiene rubber. The primary amino modified solution polymerized styrene-butadiene rubber is prepared by the preparation method, has high polarity and strong binding force with silicon dioxide filler, promotes generation of a more stable filler-polymer network with a more perfect structure, and remarkably improves the dynamic performance of a rubber material.