Colored rubber tube and preparation method thereof

Abstract

The invention discloses a colored rubber tube and a preparation method thereof, and particularly relates to the technical field of rubber tubes, and the colored rubber tube comprises the following components in parts: 35-45 parts of natural rubber, 55-65 parts of SSBR1225, 55-60 parts of carbon black, 5-8 parts of aromatic hydrocarbon oil, 4-8 parts of zinc oxide, 1.5-4.5 parts of stearic acid, 1-5 parts of an anti-aging agent, 1-3 parts of microcrystalline wax, 10-20 parts of functional resin, 2-5 parts of a carbon black dispersant, 10-30 parts of filler and 1.5-3.5 parts of sulfur. The preparation method comprises the following steps: step 1, firstly, selecting natural rubber with low mooney viscosity, and primarily crushing the natural rubber through a crusher, so that the natural rubber becomes a granular raw material; the color rubber tube produced by the production formula has no quality defects of dark bubbles and pinholes on the surface during extrusion, particularly after the anti-aging agent 6PPD and the anti-aging agent BLE are mixed for use, the thermo-oxidative aging resistance and the ozone aging resistance are greatly improved, and in addition, the rubber tube prepared by the production formula is relatively high in strength and has good extensibility.

Description

Technical Field

[0001] The present invention relates to the technical field of rubber hoses, and more particularly to a colored rubber hose and a preparation method thereof. Background Art

[0002] At present, pipes produced by various materials and processes are three-layer or more structures. The reinforcing layer material itself has no compatibility with the rubber compound, resulting in poor bonding performance between the inner and outer rubber compounds due to the presence of the reinforcing layer. The existing solution is to extrude the outer rubber component. This method has obvious granularity on the surface of the outer rubber component, and some rubber compounds penetrate through the gaps in the reinforcing layer and contact the outer rubber compound, leaving gaps.

[0003] Therefore, there is an urgent need for a colored rubber hose and a preparation method thereof to solve the above problems. Summary of the invention

[0004] In order to overcome the above-mentioned defects of the prior art, an embodiment of the present invention provides a colored rubber hose and a preparation method thereof. The colored rubber hose produced by the present invention has no quality defects of dark bubbles and pinholes on the surface during extrusion, especially after the antioxidant 6PPD and the antioxidant BLE are mixed and used, the resistance to thermal oxidation aging and ozone aging is greatly improved. In addition, the rubber hose made by the production formula of the present invention has high strength and good extensibility, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a colored rubber hose and a preparation method thereof, comprising the following components:

[0006]

[0007]

[0008] In a preferred embodiment, the antioxidant includes 6PPD and liquid BLE. The two antioxidants are mixed to produce a synergistic effect and provide comprehensive protection.

[0009] In a preferred embodiment, the viscosity density index of the aromatic oil is between 0.96 and 0.97, and the promoter includes promoter NS and promoter DPG.

[0010] In a preferred embodiment, the filler is modified clay.

[0011] In a preferred embodiment, the functional resin is configured as a tackifying resin.

[0012] A method for preparing a colored rubber hose comprises the colored rubber hose described in any one of the above and the following steps:

[0013] Step 1: First, select natural rubber with low Mooney, and use a crusher to preliminarily crush the natural rubber to make it into granular raw materials;

[0014] Step 2: Add low Mooney natural rubber, solution polymerized styrene-butadiene rubber and small materials into the internal mixer at the same time, stir and mix for 45 seconds. The internal mixer will cut and rub the raw materials at high speed to fully mix the various raw materials and generate heat to promote the reaction;

[0015] Step 3: Add fillers such as carbon black in sequence, stir at a uniform speed, inject aromatic oil when the temperature rises to 110-120°C, and remove the glue when the temperature rises to 145-150°C;

[0016] Step 4: The rubber compound is subjected to a second-stage master batching, and when the temperature rises to 135-140°C, the rubber compound is discharged;

[0017] Step 5: Add the second-stage masterbatch and the vulcanizing agent into the internal mixer, stir at a constant speed, and discharge the glue when the temperature rises to 95-100℃;

[0018] Step 6: The final rubber mixture is transported to the next process for extrusion. The heated rubber mixture is sent to the extruder, and the raw materials are squeezed into the desired shape of the hose through the extruder screw and the forming hole of the mold;

[0019] Step 7: After the mold is produced, the finished product is made in the molding workshop and stored;

[0020] Step 8: Place the formed hose into a vulcanization box for vulcanization and curing, cool the cured hose, and then trim it. After vulcanization and molding, the finished product is inspected and tested.

[0021] Technical effects and advantages of the present invention:

[0022] The invention comprises 35-45 parts of natural rubber, 55-65 parts of SSBR1225, 55-60 parts of carbon black, 5-8 parts of aromatic oil, 4-8 parts of zinc oxide, 1.5-4.5 parts of stearic acid, 1-5 parts of antioxidant, 1-3 parts of microcrystalline wax, 10-20 parts of functional resin, 2-5 parts of carbon black dispersant, 10-30 parts of filler, 1.5-3.5 parts of sulfur, 1-3 parts of accelerator and 0.1-0.3 parts of scorch retarder. First, natural rubber is selected. Low Mooney natural rubber, the natural rubber is initially crushed through a crusher to make it into granular raw materials, the low Mooney natural rubber, solution polymerized styrene butadiene rubber and small materials are added to the internal mixer at the same time, stirred, and mixed for 45 seconds. The internal mixer cuts and rubs the raw materials at high speed to fully mix the various raw materials and generate heat to promote the reaction. Fillers such as carbon black are added in turn, stirred at a uniform speed, and aromatic oil is injected when the temperature rises to 110-120℃, and the temperature rises to 145-15 When the temperature is 0℃, the rubber is discharged, and the rubber material undergoes a second-stage masterbatch. When the temperature is raised to 135-140℃, the rubber is discharged, and the second-stage masterbatch and the vulcanizer are added to an internal mixer, stirred at a uniform speed, and when the temperature is raised to 95-100℃, the rubber is discharged, and the final rubber is transported to the next process for extrusion, and the heated rubber mixture is sent to the extruder, and the raw materials are extruded into a hose of a desired shape through the screw of the extruder and the forming hole of the mold. After the hose is molded, it is produced in a molding workshop and stored. The molded hose is put into a vulcanizing box for vulcanization and curing, and the vulcanized and cured hose is cooled and then trimmed. The finished product after vulcanization and molding is inspected and tested. The colored hose produced by the present invention has no quality defects of dark bubbles and pinholes on the surface when extruded, especially after the antioxidant 6PPD is mixed with the antioxidant BLE, the heat-oxidative aging resistance and ozone aging resistance are greatly improved. In addition, the hose made by the production formula of the present invention has high strength and good elongation. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] Example 1

[0025] The present invention provides a colored rubber hose and a preparation method thereof, comprising the following components:

[0026]

[0027] The antioxidant includes 6PPD and liquid BLE. The two antioxidants are mixed to produce a synergistic effect and provide comprehensive protection.

[0028] The viscosity density index of the aromatic oil is between 0.96 and 0.97, and the promoter includes promoter NS and promoter DPG.

[0029] The filler is configured as modified clay.

[0030] The functional resin is configured as a tackifying resin.

[0031] A method for preparing a colored rubber hose comprises the colored rubber hose described in any one of the above and the following steps:

[0032] Step 1: First, select natural rubber with low Mooney, and use a crusher to preliminarily crush the natural rubber to make it into granular raw materials;

[0033] Step 2: Add low Mooney natural rubber, solution polymerized styrene-butadiene rubber and small materials into the internal mixer at the same time, stir and mix for 45 seconds. The internal mixer will cut and rub the raw materials at high speed to fully mix the various raw materials and generate heat to promote the reaction;

[0034] Step 3: Add fillers such as carbon black in sequence, stir at a uniform speed, inject aromatic oil when the temperature rises to 110-120°C, and remove the glue when the temperature rises to 145-150°C;

[0035] Step 4: The rubber compound is subjected to a second-stage master batching, and when the temperature rises to 135-140°C, the rubber compound is discharged;

[0036] Step 5: Add the second-stage masterbatch and the vulcanizing agent into the internal mixer, stir at a constant speed, and discharge the glue when the temperature rises to 95-100℃;

[0037] Step 6: The final rubber mixture is transported to the next process for extrusion. The heated rubber mixture is sent to the extruder, and the raw materials are squeezed into the desired shape of the hose through the extruder screw and the forming hole of the mold;

[0038] Step 7: After the mold is produced, the finished product is made in the molding workshop and stored;

[0039] Step 8: Place the formed hose into a vulcanization box for vulcanization and curing, cool the cured hose, and then trim it. After vulcanization and molding, the finished product is inspected and tested.

[0040] Compared with the prior art, the surface of the outer rubber component of this embodiment has no obvious granularity, the rubber material penetrates through the gaps in the reinforcing layer and contacts the outer rubber without any gaps, and the quality of the rubber hose is better.

[0041] Example 2

[0042] The present invention provides a colored rubber hose and a preparation method thereof, comprising the following components:

[0043]

[0044]

[0045] The antioxidant includes 6PPD and liquid BLE. The two antioxidants are mixed to produce a synergistic effect and provide comprehensive protection.

[0046] The viscosity density index of the aromatic oil is between 0.96 and 0.97, and the promoter includes promoter NS and promoter DPG.

[0047] The filler is configured as modified clay.

[0048] The functional resin is configured as a tackifying resin.

[0049] A method for preparing a colored rubber hose comprises the colored rubber hose described in any one of the above and the following steps:

[0050] Step 1: First, select natural rubber with low Mooney, and use a crusher to preliminarily crush the natural rubber to make it into granular raw materials;

[0051] Step 2: Add low Mooney natural rubber, solution polymerized styrene-butadiene rubber and small materials into the internal mixer at the same time, stir and mix for 45 seconds. The internal mixer will cut and rub the raw materials at high speed to fully mix the various raw materials and generate heat to promote the reaction;

[0052] Step 3: Add fillers such as carbon black in sequence, stir at a uniform speed, inject aromatic oil when the temperature rises to 110-120°C, and remove the glue when the temperature rises to 145-150°C;

[0053] Step 4: The rubber compound is subjected to a second-stage master batching, and when the temperature rises to 135-140°C, the rubber compound is discharged;

[0054] Step 5: Add the second-stage masterbatch and the vulcanizing agent into the internal mixer, stir at a constant speed, and discharge the glue when the temperature rises to 95-100℃;

[0055] Step 6: The final rubber mixture is transported to the next process for extrusion. The heated rubber mixture is sent to the extruder, and the raw materials are squeezed into the desired shape of the hose through the extruder screw and the forming hole of the mold;

[0056] Step 7: After the mold is produced, the finished product is made in the molding workshop and stored;

[0057] Step 8: Place the formed hose into a vulcanization box for vulcanization and curing, cool the cured hose, and then trim it. After vulcanization and molding, the finished product is inspected and tested.

[0058] Compared with the prior art, the surface of the outer rubber component of this embodiment has no obvious granularity, the rubber material penetrates through the gaps in the reinforcing layer and contacts the outer rubber without any gaps, and the quality of the rubber hose is better.

[0059] Example 3

[0060] The present invention provides a colored rubber hose and a preparation method thereof, comprising the following components:

[0061]

[0062]

[0063] The antioxidant includes 6PPD and liquid BLE. The two antioxidants are mixed to produce a synergistic effect and provide comprehensive protection.

[0064] The viscosity density index of the aromatic oil is between 0.96 and 0.97, and the promoter includes promoter NS and promoter DPG.

[0065] The filler is configured as modified clay.

[0066] The functional resin is configured as a tackifying resin.

[0067] A method for preparing a colored rubber hose comprises the colored rubber hose described in any one of the above and the following steps:

[0068] Step 1: First, select natural rubber with low Mooney, and use a crusher to preliminarily crush the natural rubber to make it into granular raw materials;

[0069] Step 2: Add low Mooney natural rubber, solution polymerized styrene-butadiene rubber and small materials into the internal mixer at the same time, stir and mix for 45 seconds. The internal mixer will cut and rub the raw materials at high speed to fully mix the various raw materials and generate heat to promote the reaction;

[0070] Step 3: Add fillers such as carbon black in sequence, stir at a uniform speed, inject aromatic oil when the temperature rises to 110-120°C, and remove the glue when the temperature rises to 145-150°C;

[0071] Step 4: The rubber compound is subjected to a second-stage master batching, and when the temperature rises to 135-140°C, the rubber compound is discharged;

[0072] Step 5: Add the second-stage masterbatch and the vulcanizing agent into the internal mixer, stir at a constant speed, and discharge the glue when the temperature rises to 95-100℃;

[0073] Step 6: The final rubber mixture is transported to the next process for extrusion. The heated rubber mixture is sent to the extruder, and the raw materials are squeezed into the desired shape of the hose through the extruder screw and the forming hole of the mold;

[0074] Step 7: After the mold is produced, the finished product is made in the molding workshop and stored;

[0075] Step 8: Place the formed hose into a vulcanization box for vulcanization and curing, cool the cured hose, and then trim it. After vulcanization and molding, the finished product is inspected and tested.

[0076] Compared with the prior art, the surface of the outer rubber component of this embodiment has no obvious granularity, the rubber material penetrates through the gap of the reinforcing layer and contacts the outer rubber without a gap, and the quality of the rubber hose is better.

[0077] Example 4

[0078] The present invention provides a colored rubber hose and a preparation method thereof, comprising the following components:

[0079]

[0080] The antioxidant includes 6PPD and liquid BLE. The two antioxidants are mixed to produce a synergistic effect and provide comprehensive protection.

[0081] The viscosity density index of the aromatic oil is between 0.96 and 0.97, and the promoter includes promoter NS and promoter DPG.

[0082] The filler is configured as modified clay.

[0083] The functional resin is configured as a tackifying resin.

[0084] A method for preparing a colored rubber hose comprises the colored rubber hose described in any one of the above and the following steps:

[0085] Step 1: First, select natural rubber with low Mooney, and use a crusher to preliminarily crush the natural rubber to make it into granular raw materials;

[0086] Step 2: Add low Mooney natural rubber, solution polymerized styrene-butadiene rubber and small materials into the internal mixer at the same time, stir and mix for 45 seconds. The internal mixer will cut and rub the raw materials at high speed to fully mix the various raw materials and generate heat to promote the reaction;

[0087] Step 3: Add fillers such as carbon black in sequence, stir at a uniform speed, inject aromatic oil when the temperature rises to 110-120°C, and remove the glue when the temperature rises to 145-150°C;

[0088] Step 4: The rubber compound is subjected to a second-stage master batching, and when the temperature rises to 135-140°C, the rubber compound is discharged;

[0089] Step 5: Add the second-stage masterbatch and the vulcanizing agent into the internal mixer, stir at a constant speed, and discharge the glue when the temperature rises to 95-100℃;

[0090] Step 6: The final rubber mixture is transported to the next process for extrusion. The heated rubber mixture is sent to the extruder, and the raw materials are squeezed into the desired shape of the hose through the extruder screw and the forming hole of the mold;

[0091] Step 7: After the mold is produced, the finished product is made in the molding workshop and stored;

[0092] Step 8: Place the formed hose into a vulcanization box for vulcanization and curing, cool the cured hose, and then trim it. After vulcanization and molding, the finished product is inspected and tested.

[0093] Compared with the prior art, the surface of the outer rubber component of this embodiment has no obvious granularity, the rubber material penetrates through the gaps in the reinforcing layer and contacts the outer rubber without any gaps, and the quality of the rubber hose is better.

[0094] Example 5

[0095] The present invention provides a colored rubber hose and a preparation method thereof, comprising the following components:

[0096]

[0097]

[0098] The antioxidant includes 6PPD and liquid BLE. The two antioxidants are mixed to produce a synergistic effect and provide comprehensive protection.

[0099] The viscosity density index of the aromatic oil is between 0.96 and 0.97, and the promoter includes promoter NS and promoter DPG.

[0100] The filler is configured as modified clay.

[0101] The functional resin is configured as a tackifying resin.

[0102] A method for preparing a colored rubber hose comprises the colored rubber hose described in any one of the above and the following steps:

[0103] Step 1: First, select natural rubber with low Mooney, and use a crusher to preliminarily crush the natural rubber to make it into granular raw materials;

[0104] Step 2: Add low Mooney natural rubber, solution polymerized styrene-butadiene rubber and small materials into the internal mixer at the same time, stir and mix for 45 seconds. The internal mixer will cut and rub the raw materials at high speed to fully mix the various raw materials and generate heat to promote the reaction;

[0105] Step 3: Add fillers such as carbon black in sequence, stir at a uniform speed, inject aromatic oil when the temperature rises to 110-120°C, and remove the glue when the temperature rises to 145-150°C;

[0106] Step 4: The rubber compound is subjected to a second-stage master batching, and when the temperature rises to 135-140°C, the rubber compound is discharged;

[0107] Step 5: Add the second-stage masterbatch and the vulcanizing agent into the internal mixer, stir at a constant speed, and discharge the glue when the temperature rises to 95-100℃;

[0108] Step 6: The final rubber mixture is transported to the next process for extrusion. The heated rubber mixture is sent to the extruder, and the raw materials are squeezed into the desired shape of the hose through the extruder screw and the forming hole of the mold;

[0109] Step 7: After the mold is produced, the finished product is made in the molding workshop and stored;

[0110] Step 8: Place the formed hose into a vulcanization box for vulcanization and curing, cool the cured hose, and then trim it. After vulcanization and molding, the finished product is inspected and tested.

[0111] Compared with the prior art, the surface of the outer rubber component of this embodiment has no obvious granularity, the rubber material penetrates through the gap of the reinforcing layer and contacts the outer rubber without a gap, and the quality of the rubber hose is better.

[0112] Example 6

[0113] The present invention provides a colored rubber hose and a preparation method thereof, comprising the following components:

[0114]

[0115] The antioxidant includes 6PPD and liquid BLE. The two antioxidants are mixed to produce a synergistic effect and provide comprehensive protection.

[0116] The viscosity density index of the aromatic oil is between 0.96 and 0.97, and the promoter includes promoter NS and promoter DPG.

[0117] The filler is configured as modified clay.

[0118] The functional resin is configured as a tackifying resin.

[0119] A method for preparing a colored rubber hose comprises the colored rubber hose described in any one of the above and the following steps:

[0120] Step 1: First, select natural rubber with low Mooney, and use a crusher to preliminarily crush the natural rubber to make it into granular raw materials;

[0121] Step 2: Add low Mooney natural rubber, solution polymerized styrene-butadiene rubber and small materials into the internal mixer at the same time, stir and mix for 45 seconds. The internal mixer will cut and rub the raw materials at high speed to fully mix the various raw materials and generate heat to promote the reaction;

[0122] Step 3: Add fillers such as carbon black in sequence, stir at a uniform speed, inject aromatic oil when the temperature rises to 110-120°C, and remove the glue when the temperature rises to 145-150°C;

[0123] Step 4: The rubber compound is subjected to a second-stage master batching, and when the temperature rises to 135-140°C, the rubber compound is discharged;

[0124] Step 5: Add the second-stage masterbatch and the vulcanizing agent into the internal mixer, stir at a constant speed, and discharge the glue when the temperature rises to 95-100℃;

[0125] Step 6: The final rubber mixture is transported to the next process for extrusion. The heated rubber mixture is sent to the extruder, and the raw materials are squeezed into the desired shape of the hose through the extruder screw and the forming hole of the mold;

[0126] Step 7: After the mold is produced, the finished product is made in the molding workshop and stored;

[0127] Step 8: Place the formed hose into a vulcanization box for vulcanization and curing, cool the cured hose, and then trim it. After vulcanization and molding, the finished product is inspected and tested.

[0128] Compared with the prior art, the surface of the outer rubber component of this embodiment has no obvious granularity, the rubber material penetrates through the gap of the reinforcing layer and contacts the outer rubber without a gap, and the quality of the rubber hose is better.

[0129] The invention comprises 35-45 parts of natural rubber, 55-65 parts of SSBR1225, 55-60 parts of carbon black, 5-8 parts of aromatic oil, 4-8 parts of zinc oxide, 1.5-4.5 parts of stearic acid, 1-5 parts of antioxidant, 1-3 parts of microcrystalline wax, 10-20 parts of functional resin, 2-5 parts of carbon black dispersant, 10-30 parts of filler, 1.5-3.5 parts of sulfur, 1-3 parts of accelerator and 0.1-0.3 parts of scorch retarder. First, natural rubber is selected. Low Mooney natural rubber, the natural rubber is initially crushed through a crusher to make it into granular raw materials, the low Mooney natural rubber, solution polymerized styrene butadiene rubber and small materials are added to the internal mixer at the same time, stirred, and mixed for 45 seconds. The internal mixer cuts and rubs the raw materials at high speed to fully mix the various raw materials and generate heat to promote the reaction. Fillers such as carbon black are added in turn, stirred at a uniform speed, and aromatic oil is injected when the temperature rises to 110-120℃, and the temperature rises to 145-15 When the temperature is 0℃, the rubber is discharged, and the rubber material undergoes a second-stage masterbatch. When the temperature is raised to 135-140℃, the rubber is discharged, and the second-stage masterbatch and the vulcanizer are added to an internal mixer, stirred at a uniform speed, and when the temperature is raised to 95-100℃, the rubber is discharged, and the final rubber is transported to the next process for extrusion, and the heated rubber mixture is sent to the extruder, and the raw materials are extruded into a hose of a desired shape through the screw of the extruder and the forming hole of the mold. After the hose is molded, it is produced in a molding workshop and stored. The molded hose is put into a vulcanizing box for vulcanization and curing, and the vulcanized and cured hose is cooled and then trimmed. The finished product after vulcanization and molding is inspected and tested. The colored hose produced by the present invention has no quality defects of dark bubbles and pinholes on the surface when extruded, especially after the antioxidant 6PPD is mixed with the antioxidant BLE, the heat-oxidative aging resistance and ozone aging resistance are greatly improved. In addition, the hose made by the production formula of the present invention has high strength and good elongation.

[0130] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A colored hose, characterized in that: The components include the following parts:

2. A colored rubber hose according to claim 1, characterized in that: The antioxidant includes 6PPD and liquid BLE.

3. A colored rubber hose according to claim 1, characterized in that: The viscosity density index of the aromatic oil is between 0.96 and 0.97, and the promoter includes promoter NS and promoter DPG.

4. A colored rubber hose according to claim 1, characterized in that: The filler is configured as modified clay.

5. A colored rubber hose according to claim 1, characterized in that: The functional resin is configured as a tackifying resin.

6. A method for preparing a colored rubber hose, characterized in that: The method comprises a colored rubber hose as claimed in any one of claims 1 to 5 and the following steps: Step 1: First, select natural rubber with low Mooney, and use a crusher to preliminarily crush the natural rubber to make it into granular raw materials; Step 2: Add low Mooney natural rubber, solution polymerized styrene-butadiene rubber and small materials into the internal mixer at the same time, stir and mix for 45 seconds. The internal mixer will cut and rub the raw materials at high speed to fully mix the various raw materials and generate heat to promote the reaction; Step 3: Add fillers such as carbon black in sequence, stir at a uniform speed, inject aromatic oil when the temperature rises to 110-120°C, and remove the glue when the temperature rises to 145-150°C; Step 4: The rubber compound is subjected to a second-stage master batching, and when the temperature rises to 135-140°C, the rubber compound is discharged; Step 5: Add the second-stage masterbatch and the vulcanizing agent into the internal mixer, stir at a constant speed, and discharge the glue when the temperature rises to 95-100℃; Step 6: The final rubber mixture is transported to the next process for extrusion. The heated rubber mixture is sent to the extruder, and the raw materials are squeezed into the desired shape of the hose through the extruder screw and the forming hole of the mold; Step 7: After the mold is produced, the finished product is made in the molding workshop and stored; Step 8: Place the formed hose into a vulcanization box for vulcanization and curing, cool the cured hose, and then trim it. After vulcanization and molding, the finished product is inspected and tested.

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