CN109181022B - Preparation method of rubber hose - Google Patents
Preparation method of rubber hose Download PDFInfo
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- CN109181022B CN109181022B CN201810898375.2A CN201810898375A CN109181022B CN 109181022 B CN109181022 B CN 109181022B CN 201810898375 A CN201810898375 A CN 201810898375A CN 109181022 B CN109181022 B CN 109181022B
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- inner tube
- rubber
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D23/00—Producing tubular articles
- B29D23/001—Pipes; Pipe joints
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/24—Crosslinking, e.g. vulcanising, of macromolecules
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/28—Treatment by wave energy or particle radiation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L7/00—Compositions of natural rubber
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2307/00—Characterised by the use of natural rubber
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2409/00—Characterised by the use of homopolymers or copolymers of conjugated diene hydrocarbons
- C08J2409/02—Copolymers with acrylonitrile
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/18—Applications used for pipes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
Abstract
A preparation method of a rubber hose, which comprises an inner pipe and an outer pipe, comprises the following steps: (1) weighing the raw materials in parts by weight; (2) mixing at 60-90 ℃ to obtain mixed rubber; (3) extruding the rubber compound on a core rod to form an inner pipe; (4) cooling the inner tube with the core rod, and then conveying the inner tube with the core rod to a rolling device, wherein the rolling device rolls the inner tube with the core rod so as to roll the metal wire protruding out of the outer surface of the inner tube, so that the metal wire is tightly attached to the outer surface of the inner tube; (5) coating the outer pipe and carrying out vulcanization treatment; (6) and obtaining a finished rubber hose. According to the invention, the rubber inner tube added with the metal wire is rolled, so that the metal wire protruding out of the outer surface of the inner tube is tightly attached to the outer surface of the inner tube, and bubbles or delamination is avoided in the vulcanization process after the outer tube is covered.
Description
Technical Field
The invention relates to a preparation method of a rubber hose, and belongs to the field of rubber processing.
Background
The existing rubber hose usually includes an inner tube and an outer tube, the inner tube is processed first, then the outer tube is covered on the outer side of the inner tube, and a fabric or a metal wire is added into the rubber inner tube to increase the strength of the hose, which also belongs to the conventional technology.
In addition, the elastic property of the inner tube of the rubber hose is still to be further improved.
Disclosure of Invention
According to the invention, the rubber inner tube added with the metal wire is rolled, so that the metal wire protruding out of the outer surface of the inner tube is tightly attached to the outer surface of the inner tube, and bubbles or delamination is avoided in the vulcanization process after the outer tube is covered. The technical scheme of the invention is realized as follows:
a preparation method of a rubber hose, which comprises an inner pipe and an outer pipe, comprises the following steps:
(1) weighing the following components in parts by weight: 40-60 parts of natural rubber, 10-15 parts of nitrile rubber, 1-5 parts of zinc oxide, 1 part of paraffin, 5-10 parts of graphite powder, 3-5 parts of sulfur, 3-5 parts of metal wire and 2-4 parts of antioxidant;
(2) adding the components into a milling machine, and mixing at the temperature of 60-90 ℃ to obtain rubber compound;
(3) extruding the rubber compound on a core rod to form an inner pipe;
(4) cooling the inner tube with the core rod, and then conveying the inner tube with the core rod to a rolling device, wherein the rolling device rolls the inner tube with the core rod so as to roll the metal wire protruding out of the outer surface of the inner tube, so that the metal wire is tightly attached to the outer surface of the inner tube;
(5) coating the outer pipe and carrying out vulcanization treatment;
(6) and obtaining a finished rubber hose.
Wherein, the step (2) specifically comprises the following steps: firstly, mixing natural rubber and nitrile rubber, and plasticating in an open mill; then, adding zinc oxide, paraffin, graphite powder, sulfur, metal wires and an antioxidant for mixing to obtain a rubber compound;
in the step (4), rolling is carried out when the inner tube with the core rod is cooled to 40-50 ℃, the rolling device comprises an upper rolling belt and a lower rolling belt, the upper rolling belt rotates clockwise or anticlockwise, the lower rolling belt is still, and the inner tube with the core rod and the upper rolling belt rotate reversely in the rolling process; detecting the metal wire rolling condition of the outer surface of the rolled inner tube with the core rod through a detection device, if the detection is qualified, entering the step (5), if the detection is unqualified, repeatedly rolling for multiple times until the detection is qualified; the detection device is a detection pipe fitting with the same inner diameter as the outer pipe, when the rolled inner pipe with the core rod can be smoothly inserted into the detection pipe fitting, the detection is qualified, and otherwise, the detection is unqualified.
The nitrile rubber has good oil resistance and aging resistance, and also has water resistance, air tightness and excellent bonding performance. For example, styrene butadiene rubber has uniform quality, less foreign matters, better wear resistance and aging resistance, but weaker mechanical strength, and can be blended with natural rubber for use.
The zinc oxide is an excellent vulcanizing activator, can obviously improve the indexes of heat conductivity, wear resistance, tear resistance, tensile strength and the like of the product, reduces the product cost, can prolong the scorching time of rubber materials, and has good effects of improving the wear resistance and sealing effect of the product.
The graphite powder can reduce the rolling resistance of rubber, and in vulcanized rubber, a polymer and the graphite powder have stronger adsorption bonds, so that the slippage of polymer molecules along the surface is inhibited, and the hysteresis loss is reduced.
The strength of the rubber hose can be greatly improved by adding the metal fiber wires, the wear resistance of the rubber hose is greatly improved, and the service life of the rubber hose is prolonged.
Further, during the rolling process of the step (4), an adhesive is added.
Compared with the prior art, the invention has the following outstanding beneficial effects:
1. the rubber inner tube added with the metal wire is rolled, so that the metal wire protruding out of the outer surface of the inner tube is tightly attached to the outer surface of the inner tube, and bubbles or delamination in the vulcanization process after the outer tube is covered is avoided.
The invention provides a rubber hose which comprises an outer rubber layer and an inner rubber layer, wherein the inner rubber layer and the outer rubber layer are respectively formed by adopting different raw materials and different proportions, so that the rubber hose provided by the invention has excellent oil resistance, aging resistance and other characteristics and excellent physical properties.
Detailed Description
The following detailed description of specific embodiments of the present invention is provided in conjunction with examples, but it should be understood that the scope of the present invention is not limited to the specific embodiments.
Example 1:
a preparation method of a rubber hose, which comprises an inner pipe and an outer pipe, comprises the following steps:
(1) weighing the following components in parts by weight: 50 parts of natural rubber, 10 parts of nitrile rubber, 3 parts of zinc oxide, 1 part of paraffin, 5 parts of graphite powder, 3 parts of sulfur, 5 parts of metal wire and 2-4 parts of antioxidant;
(2) adding the components into a milling machine, and mixing at 70 ℃ to obtain a rubber compound;
(3) extruding the rubber compound on a core rod to form an inner pipe;
(4) cooling the inner tube with the core rod, and then conveying the inner tube with the core rod to a rolling device, wherein the rolling device rolls the inner tube with the core rod so as to roll the metal wire protruding out of the outer surface of the inner tube, so that the metal wire is tightly attached to the outer surface of the inner tube;
(5) coating the outer pipe and carrying out vulcanization treatment;
(6) and obtaining a finished rubber hose.
Wherein, the step (2) specifically comprises the following steps: firstly, mixing natural rubber and nitrile rubber, and plasticating in an open mill; then, adding zinc oxide, paraffin, graphite powder, sulfur, metal wires and an antioxidant for mixing to obtain a rubber compound;
in the step (4), rolling is carried out when the inner tube with the core rod is cooled to 40-50 ℃, the rolling device comprises an upper rolling belt and a lower rolling belt, the upper rolling belt rotates clockwise or anticlockwise, the lower rolling belt is still, and the inner tube with the core rod and the upper rolling belt rotate reversely in the rolling process; detecting the metal wire rolling condition of the outer surface of the rolled inner tube with the core rod through a detection device, if the detection is qualified, entering the step (5), if the detection is unqualified, repeatedly rolling for multiple times until the detection is qualified; the detection device is a detection pipe fitting with the same inner diameter as the outer pipe, when the rolled inner pipe with the core rod can be smoothly inserted into the detection pipe fitting, the detection is qualified, and otherwise, the detection is unqualified.
The nitrile rubber has good oil resistance and aging resistance, and also has water resistance, air tightness and excellent bonding performance. For example, styrene butadiene rubber has uniform quality, less foreign matters, better wear resistance and aging resistance, but weaker mechanical strength, and can be blended with natural rubber for use.
The zinc oxide is an excellent vulcanizing activator, can obviously improve the indexes of heat conductivity, wear resistance, tear resistance, tensile strength and the like of the product, reduces the product cost, can prolong the scorching time of rubber materials, and has good effects of improving the wear resistance and sealing effect of the product.
The graphite powder can reduce the rolling resistance of rubber, and in vulcanized rubber, a polymer and the graphite powder have stronger adsorption bonds, so that the slippage of polymer molecules along the surface is inhibited, and the hysteresis loss is reduced.
The strength of the rubber hose can be greatly improved by adding the metal fiber wires, the wear resistance of the rubber hose is greatly improved, and the service life of the rubber hose is prolonged.
Example 2:
a preparation method of a rubber hose, which comprises an inner pipe and an outer pipe, comprises the following steps:
(1) weighing the following components in parts by weight: 60 parts of natural rubber, 15 parts of nitrile rubber, 5 parts of zinc oxide, 1 part of paraffin, 10 parts of graphite powder, 3 parts of sulfur, 3 parts of metal wire and 2 parts of antioxidant;
(2) adding the components into a milling machine, and mixing at the temperature of 80 ℃ to obtain rubber compound;
(3) extruding the rubber compound on a core rod to form an inner pipe;
(4) cooling the inner tube with the core rod, and then conveying the inner tube with the core rod to a rolling device, wherein the rolling device rolls the inner tube with the core rod so as to roll the metal wire protruding out of the outer surface of the inner tube, so that the metal wire is tightly attached to the outer surface of the inner tube;
(5) coating the outer pipe and carrying out vulcanization treatment;
(6) and obtaining a finished rubber hose.
Wherein, the step (2) specifically comprises the following steps: firstly, mixing natural rubber and nitrile rubber, and plasticating in an open mill; then, adding zinc oxide, paraffin, graphite powder, sulfur, metal wires and an antioxidant for mixing to obtain a rubber compound;
in the step (4), rolling is carried out when the inner tube with the core rod is cooled to 40-50 ℃, the rolling device comprises an upper rolling belt and a lower rolling belt, the upper rolling belt rotates clockwise or anticlockwise, the lower rolling belt is still, and the inner tube with the core rod and the upper rolling belt rotate reversely in the rolling process; detecting the metal wire rolling condition of the outer surface of the rolled inner tube with the core rod through a detection device, if the metal wire rolling condition is qualified, entering the step (5), if the metal wire rolling condition is unqualified, and if the metal wire rolling condition is unqualified, repeatedly rolling for multiple times until the metal wire rolling condition is qualified; the detection device is a detection pipe fitting with the same inner diameter as the outer pipe, when the rolled inner pipe with the core rod can be smoothly inserted into the detection pipe fitting, the detection is qualified, and otherwise, the detection is unqualified.
And (4) adding an adhesive in the rolling process of the step (4).
The nitrile rubber has good oil resistance and aging resistance, and also has water resistance, air tightness and excellent bonding performance. For example, styrene butadiene rubber has uniform quality, less foreign matters, better wear resistance and aging resistance, but weaker mechanical strength, and can be blended with natural rubber for use.
The zinc oxide is an excellent vulcanizing activator, can obviously improve the indexes of heat conductivity, wear resistance, tear resistance, tensile strength and the like of the product, reduces the product cost, can prolong the scorching time of rubber materials, and has good effects of improving the wear resistance and sealing effect of the product.
The graphite powder can reduce the rolling resistance of rubber, and in vulcanized rubber, a polymer and the graphite powder have stronger adsorption bonds, so that the slippage of polymer molecules along the surface is inhibited, and the hysteresis loss is reduced.
The strength of the rubber hose can be greatly improved by adding the metal fiber wires, the wear resistance of the rubber hose is greatly improved, and the service life of the rubber hose is prolonged.
The invention provides a rubber hose which comprises an outer rubber layer and an inner rubber layer, wherein the inner rubber layer and the outer rubber layer are respectively formed by adopting different raw materials and different proportions, so that the rubber hose provided by the invention has excellent oil resistance, aging resistance and other characteristics and excellent physical properties.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (2)
1. A preparation method of a rubber hose, which comprises an inner pipe and an outer pipe, comprises the following steps:
(1) weighing the following components in parts by weight: 40-60 parts of natural rubber, 10-15 parts of nitrile rubber, 1-5 parts of zinc oxide, 1 part of paraffin, 5-10 parts of graphite powder, 3-5 parts of sulfur, 3-5 parts of metal wire and 2-4 parts of antioxidant;
(2) adding the components into an open mill, and mixing at 60-90 ℃ to obtain rubber compound;
(3) extruding the rubber compound on a core rod to form an inner pipe;
(4) cooling the inner tube with the core rod, and then conveying the inner tube with the core rod to a rolling device, wherein the rolling device rolls the inner tube with the core rod so as to roll the metal wire protruding out of the outer surface of the inner tube, so that the metal wire is tightly attached to the outer surface of the inner tube;
(5) coating the outer pipe and carrying out vulcanization treatment;
(6) obtaining a finished rubber hose product;
wherein, the step (2) specifically comprises the following steps: firstly, mixing natural rubber and nitrile rubber, and plasticating in an open mill; then, adding zinc oxide, paraffin, graphite powder, sulfur, metal wires and an antioxidant for mixing to obtain a rubber compound;
in the step (4), rolling is carried out when the inner tube with the core rod is cooled to 40-50 ℃, the rolling device comprises an upper rolling belt and a lower rolling belt, the upper rolling belt rotates clockwise or anticlockwise, the lower rolling belt is still, and the inner tube with the core rod and the upper rolling belt rotate reversely in the rolling process; detecting the metal wire rolling condition of the outer surface of the rolled inner tube with the core rod through a detection device, if the detection is qualified, entering the step (5), if the detection is unqualified, repeatedly rolling for multiple times until the detection is qualified; the detection device is a detection pipe fitting with the same inner diameter as the outer pipe, when the rolled inner pipe with the core rod can be smoothly inserted into the detection pipe fitting, the detection is qualified, and otherwise, the detection is unqualified.
2. The method for producing a rubber hose according to claim 1, wherein: and (4) adding an adhesive in the rolling process of the step (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810898375.2A CN109181022B (en) | 2018-08-08 | 2018-08-08 | Preparation method of rubber hose |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810898375.2A CN109181022B (en) | 2018-08-08 | 2018-08-08 | Preparation method of rubber hose |
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| Publication Number | Publication Date |
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| CN109181022A CN109181022A (en) | 2019-01-11 |
| CN109181022B true CN109181022B (en) | 2020-11-03 |
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| CN201810898375.2A Active CN109181022B (en) | 2018-08-08 | 2018-08-08 | Preparation method of rubber hose |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101446375A (en) * | 2008-12-19 | 2009-06-03 | 河北宇通特种胶管有限公司 | Mud suction and drainage hose and preparation method thereof |
| CN103062526A (en) * | 2013-01-03 | 2013-04-24 | 河北省景县飞龙橡塑制品有限公司 | High-pressure hydraulic oil pipe and production method thereof |
| CN104999684A (en) * | 2015-06-12 | 2015-10-28 | 苏州市大力电器有限公司 | Preparation method for high-strength hydraulic oil pipe |
| CN105315514A (en) * | 2015-12-04 | 2016-02-10 | 沈阳赛亚橡胶制品有限公司 | Inner rubber layer of energy-saving environment-friendly rubber hose |
| CN106279798A (en) * | 2016-08-04 | 2017-01-04 | 安徽嘉木橡塑工业有限公司 | A kind of rubber tube material and preparation method thereof |
| CN107163320A (en) * | 2017-05-22 | 2017-09-15 | 罗建华 | A kind of nitrile rubber flexible pipe glue and preparation method thereof |
-
2018
- 2018-08-08 CN CN201810898375.2A patent/CN109181022B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101446375A (en) * | 2008-12-19 | 2009-06-03 | 河北宇通特种胶管有限公司 | Mud suction and drainage hose and preparation method thereof |
| CN103062526A (en) * | 2013-01-03 | 2013-04-24 | 河北省景县飞龙橡塑制品有限公司 | High-pressure hydraulic oil pipe and production method thereof |
| CN104999684A (en) * | 2015-06-12 | 2015-10-28 | 苏州市大力电器有限公司 | Preparation method for high-strength hydraulic oil pipe |
| CN105315514A (en) * | 2015-12-04 | 2016-02-10 | 沈阳赛亚橡胶制品有限公司 | Inner rubber layer of energy-saving environment-friendly rubber hose |
| CN106279798A (en) * | 2016-08-04 | 2017-01-04 | 安徽嘉木橡塑工业有限公司 | A kind of rubber tube material and preparation method thereof |
| CN107163320A (en) * | 2017-05-22 | 2017-09-15 | 罗建华 | A kind of nitrile rubber flexible pipe glue and preparation method thereof |
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| CN109181022A (en) | 2019-01-11 |
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Effective date of registration: 20220708 Address after: 518000 building 43, Changxing science and Technology Industrial Park, Changzhen community, Gongming sub district office, Guangming New District, Shenzhen City, Guangdong Province Patentee after: MARUICHI RUBBER (SHENZHEN) LTD. Address before: 518000 building 43, Changxing science and Technology Industrial Park, Changzhen community, Gongming sub district office, Guangming New District, Shenzhen City, Guangdong Province Patentee before: Fu Zhao Jun |