A turn-up device, comprising a building machine main shaft, an outer sleeve device, a ply down finger assembly, a bladder device, a bead setting device, and a bead locking device. The outer sleeve device, the ply down finger assembly and the bladder device are all sleeved on the building machine main shaft. The outer sleeve device is located on the outer sides of the ply down finger assembly and the bladder device along the radial direction of the building machine main shaft. The bead setting device is located on the outer sleeve device. A tire building method using the turn-up device can improve the building quality of tire beads, improve the service life of capsule, and provide promising precision of carcass.
A tire building method comprises the following steps: step 1, manufacturing a first carcass assembly on a carcass drum, and transferring the first carcass assembly to a building drum through a first carcass transfer device; step 2, manufacturing a second carcass assembly on a belt drum, and transferring the second carcass assembly to the building drum through a second carcass transfer device; step 3, respectively driving a first chuck seat and a second chuck seat to move oppositely by a first nut and a second nut; step 4, sleeving the second carcass assembly on the supported first carcass assembly, and fitting the two carcass assemblies together and rolling the same to form a third carcass assembly; step 5, winding a tread to the outer surface of the third carcass assembly to form a fourth carcass assembly; and step 6, dismounting the fourth carcass assembly from the building drum.
Provided is a hydrophobic steel wire rubber-coated cord, comprising the following parts by weight: 100 parts of rubber, 10-120 parts of white carbon black, 0.2-2.4 parts of hydrophobic modifier, 0.1-12 parts of silane coupling agent, 1-10 parts of zinc oxide, 1-10 parts of anti-aging agent, 0.1-5 parts of cobalt boroacylate, 1-10 parts of sulfur powder, and 1-10 parts of promoting agent. Also comprised is a method for preparing a hydrophobic steel wire rubber-coated cord. The hydrophobic steel wire rubber-coated cord and preparation method thereof are such that the interface adhesion of the hydrophobic steel wire rubber-coated cord better and the tensile strength are appropriate, and the anti-humidity and heat aging performance are significantly improved.
a/b); Said process allows to obtain a polymer grade solvent having a quality suitable for being used indifferently and contemporaneously in various types of production plants of elastomeric (co)polymers, i.e. in plants wherein an anionic (co)polymerization is carried out, and also in plants wherein a Ziegler-Natta (co)polymerization is carried out.
Process for the purification of the solvent deriving from the production of an elastomeric blend comprising the following steps: • (a) optionally, subjecting said solvent to a pre-washing (2) in the presence of at least one acid or basic aqueous solution; • (b) feeding said solvent to a liquid-liquid separation column (7); • (c) feeding the stream leaving the head of said liquid-liquid separation column (7) to an azeotropic distillation column (21); • (d) feeding the stream withdrawn laterally (side-withdrawal) from said azeotropic distillation column (21) to an adsorption section (34a/b); Said process allows to obtain a polymer grade solvent having a quality suitable for being used indifferently and contemporaneously in various types of production plants of elastomeric (co)polymers, i.e. in plants wherein an anionic (co)polymerization is carried out, and also in plants wherein a Ziegler-Natta (co)polymerization is carried out.
Process for the purification of the solvent deriving from the production of an elastomeric blend comprising the following steps: (a) optionally, subjecting said solvent to a pre-washing (2) in the presence of at least one acid or basic aqueous solution; (b) feeding said solvent to a liquid-liquid separation column (7); (c) feeding the stream leaving the head of said liquid-liquid separation column (7) to an azeotropic distillation column (21); (d) feeding the stream withdrawn laterally (side-withdrawal) from said azeotropic distillation column (21) to an adsorption section (34a/b); Said process allows to obtain a polymer grade solvent having a quality suitable for being used indifferently and contemporaneously in various types of production plants of elastomeric (co)polymers, i.e. in plants wherein an anionic (co)polymerization is carried out, and also in plants wherein a Ziegler-Natta (co)polymerization is carried out.
A tire forming method. The method comprises the following steps: step 1, manufacturing a first tire body assembly on a tire body drum, and transferring the first tire body assembly to a forming drum by means of a first tire body transfer device; step 2, manufacturing a second tire body assembly on a layered drum having beams, and transferring the second tire body assembly to the forming drum by means of a second tire body transfer device; step 3, driving a first chuck base (204) and a second chuck base (205) to do forward motion correspondingly by using a first nut (202) and a second nut (203), and inflating a forming capsule (210) on the forming drum, so as to support the first tire body assembly; step 4, sleeving the second tire body assembly on the supported first tire body assembly, and attaching the first tire body assembly and the second tire body assembly together and rolling the first tire body assembly and the second tire body assembly, so as to form a third tire body assembly; step 5, attaching or winding a tire tread to the outer surface of the third tire body assembly to form a fourth tire body assembly; and step 6, dismounting the fourth tire body assembly from the forming drum, so as to complete the forming operation of the tire.
A tire turn-up device comprises a forming machine main shaft (O), an outer sleeve device (A), a finger-shaped sheet device (B), a capsule device (C), a buckling ring device (D), and a locking ring device (E). The tire turn-up device is characterized in that the outer sleeve device (A), the finger-shaped sheet device (B) and the capsule device (C) are all sleeved on the forming machine main shaft (O), the outer sleeve device (A) is located on the outer sides of the finger-shaped sheet device (B) and the capsule device (C) in the radial direction of the forming machine main shaft (O), and the buckling ring device (D) is located on the outer sleeve device (A). By using the tire forming method for the turn-up device, the forming quality of a rim of the tire can be improved, the service life of the capsule can be improved, and the precision of the tire body can be ensured.
A rubber composition is prepared from (A) rubber, (B) first filler, and (C) second filler; the first filler is prepared into first master batch by adopting wet mixing; and the second filler is added in the first master batch in a form of powder or second master batch. The rubber composition can be used for manufacturing tires, and can reduce rolling resistance of the tires, increase wet skid resistance and improve wearing resistance.
C08K 5/09 - Acides carboxyliquesLeurs sels métalliquesLeurs anhydrides
C08J 3/22 - Formation de mélanges de polymères avec des additifs, p. ex. coloration en utilisant les techniques des charges mères
C08J 3/215 - Formation de mélanges de polymères avec des additifs, p. ex. coloration en présence d'une phase liquide le polymère étant prémélangé avec une phase liquide au moins un additif étant également prémélangé avec une phase liquide
B29B 7/74 - MélangeMalaxage utilisant d'autres mélangeurs ou des combinaisons de mélangeurs différents
B60C 1/00 - Pneumatiques caractérisés par la composition chimique, la disposition ou le mélange physique de la composition
10.
CONTINUOUS MANUFACTURING METHOD OF RUBBER MASTERBATCH, AND RUBBER MASTERBATCH MANUFACTURED BY SAME
A continuous manufacturing method of a rubber masterbatch and rubber masterbatch manufactured by the same. The manufacturing method comprises the following steps: step A, adding a filler to a rubber solution, and forming a rubber/filler/solvent mixture via stirring; and step B, performing solvent separation and coagulation on the mixture obtained from step A, so as to obtain a rubber/filler masterbatch, wherein the solvent separation step is specifically separating the solvent from the mixture via evaporation, low-pressure vacuum drying, heating, spray drying, expansion drying, or flash evaporation.
A continuous manufacturing method of a rubber masterbatch, rubber masterbatch manufactured by the same, and rubber product. The method comprises the following steps: step A, adding a filler to a rubber solution, and forming a rubber/filler/solvent mixture via stirring; and step B, directly introducing the rubber/filler/solvent mixture obtained from step A to a gaseous medium for coagulation and solvent separation, so as to obtain a rubber/filler masterbatch. Also provided is a rubber masterbatch obtained via the above method and rubber product thereof. In the present invention, the coagulation is performed in a gaseous medium for easy separation with the coagulation medium, thereby simplifying the process and saving energy.
Disclosed are a plate vulcanizing machine and a vulcanizing process thereof. The plate vulcanizing machine comprises a vulcanizing machine body, a pressure unit (1), upper and lower fixed plates (4, 6), a movable plate (5), a vulcanizing mould (3) and a flow divider (8), wherein the upper fixed plate (4), the movable plate (5) and the lower fixed plate (6) are sequentially connected via a guide column (7); the flow divider (8) is located on the movable plate (5); the vulcanizing mould (3) is located below the movable plate (5) and also located above a heating and cooling unit (2); and the heating and cooling unit (2) can control the vulcanizing mould (3) to realize non-isothermal vulcanizing. The vulcanizing machine can be used for improving the vulcanizing matching of rubber on each part of a tyre, through the regulation of the formulation, the vulcanizing time is shortened, the overall over-vulcanizing degree of a tyre is reduced, meanwhile, a crack quality problem after tyre vulcanizing can be solved effectively, and the safety and the service life of the vulcanizing equipment can be improved, and energy resources are saved.
Disclosed is a compression heating detector, comprising a detection unit, and the detection unit comprising a perpendicular compression device and a perpendicular compensation device, wherein the perpendicular compression device comprises a transmission motor (37), an eccentric adjusting mechanism, a transmission lever (10) and an upper pressure plate (15), and the transmission motor (37) drives the upper pressure plate (15) to compress a rubber test sample (1) by virtue of the eccentric adjusting mechanism and the transmission lever (10); and the perpendicular compensation device comprises a test sample chassis (12) and a test sample lower chassis (11) which are connected with each other in a universal connection manner, when a lever (22) is unbalanced, the lever (22) is always perpendicular to an adjusting plate (19), and the test sample chassis (12) always applies an upward force perpendicular to the test sample (1).
G01N 25/20 - Recherche ou analyse des matériaux par l'utilisation de moyens thermiques en recherchant la production de quantités de chaleur, c.-à-d. la calorimétrie, p. ex. en mesurant la chaleur spécifique, en mesurant la conductivité thermique
14.
Continuous manufacturing process for rubber masterbatch and rubber masterbatch prepared therefrom
The present invention relates to a continuous manufacturing process for a rubber masterbatch and a rubber masterbatch prepared therefrom. The manufacturing process comprises the following steps: step 1): a filler is added to a rubber solution, forming a rubber/filler/solvent mixture by stirring; and step 2): the solvent is removed and the mixture is dried, resulting in a rubber/filler masterbatch. The present invention also relates to a masterbatch prepared by the above-mentioned process and a rubber article prepared using the masterbatch. Compared to the wet mixing technologies in the prior art, the present invention has no specific requirements of rubber and filler, with a wider scope of usage. In addition, the filler has a high dispersion in rubber compounds, the production process thereof is continuous, highly efficient, low in energy consumption and labour, and thus low in cost.
C08J 3/21 - Formation de mélanges de polymères avec des additifs, p. ex. coloration en présence d'une phase liquide le polymère étant prémélangé avec une phase liquide
B29B 7/74 - MélangeMalaxage utilisant d'autres mélangeurs ou des combinaisons de mélangeurs différents
15.
DEVICE FOR TESTING THERMAL OXIDATION AGING KINETICS, AND METHOD FOR TESTING THERMAL OXIDATION ABSORPTION CURVE
Provided are a device for testing the thermal oxidation aging kinetics of rubber, and a method for testing a thermal oxidation absorption curve; the testing device comprises a test bench (1), an evacuation and oxygen-supply system (7), a temperature control system (8), an oxygenation system (9), and an automatic recording system (10); the test bench (1) is an integrated structure; test chambers (2) are arranged symmetrically inside the test bench; the center and edge positions of the test bench (1) are provided with a center temperature measurement sensor (6) and an edge temperature measurement sensor (6'), respectively; the periphery of the test bench (1) is provided with, in sequence, a heating band (3) and a thermal layer (5); a sealed end of the test chambers (2) is provided with a pressure sensor; the test chambers (2) are separately in communication with the evacuation and oxygen-supply system (7) and the oxygenation system (9); the heating band (3) is connected to the temperature control system (8); the oxygenation system (9) is connected to the automatic recording system (10). The device of the present invention can be used for accurate, rapid, and bulk testing of the thermal oxidation properties of rubber.
Provided is a heat transfer coefficient measurement device, comprising a test chamber (9), a hot-end heating system (10), a cold-end cooling system (14), an evacuation system (12), a temperature acquisition system and processing system (13), and a pressure control system (11); a test bench (15) is arranged inside the test chamber (9), the test bench (15) being an overall upper and lower structure: in sequence from bottom to top are a heating block (8), a lower pressure head (7), a sample to be tested (5), an upper pressure head (2), and a cooling block (1). A temperature-measurement-point horizontal multipoint arrangement simulates the horizontal temperature gradient of the tested sample, so as to objectively reflect the heat transfer attributes of the tested sample, and with the aid of data processing, obtain a more objective heat transfer coefficient value. At the same time, a flexible thin sheet (16) having a high thermal conductivity is arranged between the sample to be tested (5) and the pressure heads (7, 2), reducing thermal contact resistance and improving the accuracy of test values. Moreover, a limiting ring (4) is arranged between the pressure heads so as to ensure testing operability and precision when testing flexible samples. The accuracy and objectivity of heat transfer coefficient testing is significantly improved.
G01N 25/20 - Recherche ou analyse des matériaux par l'utilisation de moyens thermiques en recherchant la production de quantités de chaleur, c.-à-d. la calorimétrie, p. ex. en mesurant la chaleur spécifique, en mesurant la conductivité thermique
17.
Continuous manufacturing process for rubber masterbatch and rubber masterbatch prepared therefrom
Disclosed are a continuous manufacturing process for a rubber masterbatch and a rubber masterbatch prepared therefrom. The manufacturing process comprises: 1): a filler is added to a rubber solution, forming a rubber/filler/solvent mixture by stirring; 2): the rubber/filler/solvent mixture obtained in step 1) is fed into a coagulator, and is coagulated after optionally being brought into contact and mixed with one or more fluids of nitrogen, steam, water, aqueous slurry of filler, and oil in the coagulator, resulting in a mixture of a rubber/filler composite and a solvent; 3): the mixture obtained in step 2) is directly passed into a heating medium at a temperature higher than the boiling point of the solvent, the polarity of the medium being different from that of the solvent used, the mixture is coagulated and deswelled, and the solvent is evaporated rapidly, thereby forming a mixture of a rubber/filler composite and the solvent containing the heating medium; and 4): the solvent is removed and the remaining mixture is dried, resulting in a rubber/filler masterbatch.
A compression heat-generation detector and a method therefor. The detector comprises one or more sets of detection units. Each set of the detection units comprises a vertical compression apparatus, a vertical compensation apparatus and a core center temperature sensor synchronization apparatus. The vertical compression apparatus and vertical compensation apparatus are separately fixed on an upper frame (8). A pressure sensor (61) is mounted between a supporting seat (82) in a rubber sample and a supporting plate (26) of the vertical compensation apparatus by means of a first transitional column (63). The core center temperature sensor synchronization apparatus is mounted between a pressure plate (18) of the vertical compression apparatus and the supporting plate (26) by means of a second transitional column (67) having same or similar mechanical properties with the first transitional column (63) and a cushion block (65) having same or similar mechanical properties with the pressure sensor (61). The second transitional column (67) just penetrates through a hole of the supporting seat (82), and does not affect the test accuracy of the compression stress of the rubber sample (73) by the pressure sensor (61). The apparatus can vertically compress and vertically compensate the test sample, accurately measure the temperature change of the center position of the sample in the test process and accurately simulate practical working conditions.
G01N 25/20 - Recherche ou analyse des matériaux par l'utilisation de moyens thermiques en recherchant la production de quantités de chaleur, c.-à-d. la calorimétrie, p. ex. en mesurant la chaleur spécifique, en mesurant la conductivité thermique
19.
METHOD FOR IMPROVING ELASTICITY AND HEAT BUILD-UP PERFORMANCE OF RUBBER PRODUCT
Disclosed is a method for improving the elasticity and the heat build-up performance of a rubber product, characterized by mixing a rubber composition containing a rubber, a reinforcing filler, an anti-aging agent, a vulcanisation system and an oil to form a compounded rubber; then performing electronic irradiation on the compounded rubber to increase the content of the combined rubber in the compounded rubber by 10% or more, followed by vulcanisation to obtain the rubber product, wherein the combined rubber is a rubber which cannot be extracted by a good solvent for a rubber from a non-vulcanised filling rubber.
The present invention relates to a rubber composition and a process method therefor. The rubber composition comprises: 100 parts by weight of a rubber, 5 - 120 parts by weight of carbon black, 0.5 - 12 parts by weight of an organosilane coupling agent, and a certain number of parts by weight of an activator, an anti-aging agent, sulphur and a vulcanizing accelerator. The steps of the process method for preparing such a rubber composition comprise: compounding the rubber, carbon black, and the organosilane coupling agent into a master batch under a certain compounding condition, and then adding one or more rubber auxiliaries to form the rubber composition. The present invention can be employed in tyres for improving the abrasion resistance and reducing the rolling resistance.
The main contents of the present invention are: a master batch prepared from synthetic trans-polyisoprene (TPI) (or a combination of synthetic trans-polyisoprene (TPI) and synthetic cis-polyisoprene (IR)) and white carbon black, a master batch prepared from a natural rubber and carbon black, a rubber composition further prepared from the two master batches, and a manufacturing process therefor. The process therefor comprises: compounding TPI (or the combination of TPI and IR) with white carbon black and a coupling agent to form a white carbon black master batch; compounding the natural rubber with carbon black to form a carbon black master batch; and then compounding the white carbon black master batch, the carbon black master batch, and rubber auxiliaries according to a composition ratio to form the rubber composition. A rubber material prepared by using the rubber composition of the present invention and the process therefor has the characteristics of improved abrasion resistance and reduced heat generation, and can be applied in rubber products, especially in automobile tyres, for reducing the rolling resistance and heat generation.
RUBBER COMPOSITION WITH NATURAL RUBBER/CARBON BLACK AND SYNTHETIC POLYISOPRENE RUBBER/WHITE CARBON BLACK AS MASTER BATCH AND MANUFACTURING PROCESS THEREFOR
The main contents of the present invention are: pre-compounding a natural rubber/carbon black and a synthetic polyisoprene rubber/white carbon black to prepare a master batch, and then adding rubber auxiliaries according to a composition ratio to prepare a compounded rubber; and a manufacturing process. In the carbon black master batch of the composition, based on 100 parts by mass of the natural rubber, the amount of the carbon black used is 5 - 120 parts by mass, preferably 20 - 80 parts by mass, wherein the amount ratio of the natural rubber to the synthetic polyisoprene rubber is 1 : 3 - 5 : 1, the amount ratio of carbon black/white carbon black is kept within a certain ratio with respect to the amount ratio of natural rubber/synthetic polyisoprene rubber, and generally the ratio of the two fillers is kept consistent with the ratio of the two rubbers. A composition prepared by using the rubber composition of the present invention and the preparation process therefor has the advantages of good abrasion resistance, a high elasticity, and low heat generation, and can be used in the formulations for tyres as well as other rubber products.
The present invention discloses a continuous method for manufacturing a rubber masterbatch and a rubber masterbatch prepared thereby, the method comprises: step 1), a filler is added into a rubber solution, so as to form a rubber/filler/solvent mixture under stirring; step 2), the rubber/filler/solvent mixture in step 1) is introduced into a heating medium having a temperature higher than the boiling point of the solvent, when the medium is different from the used solvent in the properties, especially the polarity, the mixture is coagulated and de-swelled, and when the temperature of the medium is higher than the boiling point of the solvent, the solvent is rapidly volatilized, so as to form a mixture of a rubber/filler complex and the solvent containing the heating medium; step 3): the solvent is removed and the mixture is dried so as to obtain a rubber/filler masterbatch. As compared to the coagulation techniques in the prior wet compounding, the present invention has no special requirements on the rubber and the filler, thus having a wide application range. The production process is simple, continuous, and high efficient, and has low power consumption, less labor and low cost.
Disclosed are a continuous manufacturing process for a rubber masterbatch and a rubber masterbatch prepared therefrom. The manufacturing process comprises the following steps: step 1): a filler is added to a rubber solution, forming a rubber/filler/solvent mixture by stirring; step 2): the rubber/filler/solvent mixture in step 1) is subjected to coagulation, resulting in a mixture of a rubber/filler composite and the solvent; and step 3): the solvent is removed and the mixture is dried, resulting in a rubber/filler masterbatch. The present invention also relates to a masterbatch prepared using the above-mentioned process and a rubber article prepared using the masterbatch. Compared to the drying technologies in wet mixing in the prior art, the present invention has no specific requirements of rubber and filler, with a wider scope of usage. The production process is continuous, highly efficient, low in energy consumption and labour, and thus low in cost. The masterbatch prepared using this process has superior processing properties, physical and mechanical properties, and product quality.
Disclosed are a continuous manufacturing process for a rubber masterbatch and a rubber masterbatch prepared therefrom. The manufacturing process comprises: 1): a filler is added to a rubber solution, forming a rubber/filler/solvent mixture by stirring; 2): the rubber/filler/solvent mixture in step 1) is directly passed into a heating medium at a temperature higher than the boiling point of the solvent, the polarity of the medium being different from that of the solvent used, the mixture is coagulated and deswelled, and the solvent is evaporated rapidly, thereby forming a mixture of a rubber/filler composite and the solvent containing the heating medium; and 3): the solvent is removed and the mixture is dried, resulting in a rubber/filler masterbatch. The present invention has no specific requirements of rubber and filler, with a wider scope of usage. The production equipment and process thereof are simple, continuous, highly efficient, low in energy consumption and labour, and low in cost. The masterbatch prepared using this process has superior processing, physical and mechanical properties, and product quality.
The present invention relates to a continuous manufacturing process for a rubber masterbatch and a rubber masterbatch prepared therefrom. The manufacturing process comprises the following steps: step 1): a filler is added to a rubber solution, forming a rubber/filler/solvent mixture by stirring; and step 2): the solvent is removed and the mixture is dried, resulting in a rubber/filler masterbatch. The present invention also relates to a masterbatch prepared by the above-mentioned process and a rubber article prepared using the masterbatch. Compared to the wet mixing technologies in the prior art, the present invention has no specific requirements of rubber and filler, with a wider scope of usage. In addition, the filler has a high dispersion in rubber compounds, the production process thereof is continuous, highly efficient, low in energy consumption and labour, and thus low in cost.
Disclosed are a continuous manufacturing process for a rubber masterbatch and a rubber masterbatch prepared therefrom. The manufacturing process comprises: step 1): a filler is added to a rubber solution, forming a rubber/filler/solvent mixture by stirring; step 2): the rubber/filler/solvent mixture in step 1) is passed into a heating medium at a temperature higher than the boiling point of the solvent; when the polarity of the medium is different from the nature (especially the polarity) of the solvent used, the mixture is coagulated and deswelled; and when the temperature of the medium is higher than the boiling point of the solvent, the solvent is evaporated rapidly to form a mixture of a rubber/filler composite and the solvent containing the heating medium; and step 3): the solvent is removed and the mixture is dried, resulting in a rubber/filler masterbatch. Compared to the existing coagulation technologies in wet mixing, the present invention has no specific requirements of rubber and filler, with a wider scope of usage. The production process is simple, continuous, highly efficient, low in energy consumption and labour, and low in cost.
Disclosed are a continuous manufacturing process for a rubber masterbatch and a rubber masterbatch prepared therefrom. The manufacturing process comprises: 1): a filler is added to a rubber solution, forming a rubber/filler/solvent mixture by stirring; 2): the rubber/filler/solvent mixture obtained in step 1) is fed into a coagulator, and is coagulated after optionally being brought into contact and mixed with one or more fluids of nitrogen, steam, water, aqueous slurry of filler, and oil in the coagulator, resulting in a mixture of a rubber/filler composite and a solvent; 3): the mixture obtained in step 2) is directly passed into a heating medium at a temperature higher than the boiling point of the solvent, the polarity of the medium being different from that of the solvent used, the mixture is coagulated and deswelled, and the solvent is evaporated rapidly, thereby forming a mixture of a rubber/filler composite and the solvent containing the heating medium; and 4): the solvent is removed and the remaining mixture is dried, resulting in a rubber/filler masterbatch.
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