CN111186154A - Composite oil-resistant rubber hose with inner fluorine and outer silicon and preparation process thereof - Google Patents
Composite oil-resistant rubber hose with inner fluorine and outer silicon and preparation process thereof Download PDFInfo
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- CN111186154A CN111186154A CN202010012024.4A CN202010012024A CN111186154A CN 111186154 A CN111186154 A CN 111186154A CN 202010012024 A CN202010012024 A CN 202010012024A CN 111186154 A CN111186154 A CN 111186154A
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- Prior art keywords
- fluorine
- silica gel
- rubber
- silicon
- film
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/22—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length
- B29C43/24—Calendering
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/36—Bending and joining, e.g. for making hollow articles
- B29C53/38—Bending and joining, e.g. for making hollow articles by bending sheets or strips at right angles to the longitudinal axis of the article being formed and joining the edges
- B29C53/40—Bending and joining, e.g. for making hollow articles by bending sheets or strips at right angles to the longitudinal axis of the article being formed and joining the edges for articles of definite length, i.e. discrete articles
- B29C53/42—Bending and joining, e.g. for making hollow articles by bending sheets or strips at right angles to the longitudinal axis of the article being formed and joining the edges for articles of definite length, i.e. discrete articles using internal forming surfaces, e.g. mandrels
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/56—Winding and joining, e.g. winding spirally
- B29C53/58—Winding and joining, e.g. winding spirally helically
- B29C53/60—Winding and joining, e.g. winding spirally helically using internal forming surfaces, e.g. mandrels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/56—Winding and joining, e.g. winding spirally
- B29C53/58—Winding and joining, e.g. winding spirally helically
- B29C53/78—Winding and joining, e.g. winding spirally helically using profiled sheets or strips
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L11/00—Hoses, i.e. flexible pipes
- F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
- F16L11/10—Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements not embedded in the wall
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Laminated Bodies (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The invention discloses a composite oil-resistant rubber hose with inner fluorine and outer silicon and a preparation process thereof, which overcome the problems that the inner oil-resistant rubber and the outer silica gel are difficult to adhere, the adhesion is not aging-resistant and the like, and the common fluorine rubber or fluorine silica gel and silica gel are firmly compounded together. The fluorine rubber or fluorine silicon rubber and the silica gel used in the invention do not need special treatment and are heat-vulcanized fluorine rubber or fluorine silicon rubber and silica gel of any brands. The composite oil-resistant rubber pipe with inner fluorine and outer silicon or inner fluorine and silicon and outer silicon prepared by the process has low cost, the inner layer of oil-resistant rubber does not fall off permanently, and the composite oil-resistant rubber pipe is particularly suitable for high-temperature heat-conducting oil pipes and turbocharging pipes.
Description
Technical Field
The invention mainly relates to the technical field of rubber hoses, in particular to a composite oil-resistant rubber hose with fluorine inside and silicon outside and a preparation process thereof.
Background
Fluororubbers have high chemical stability and are the best medium-resistant of all elastomers at present. Due to the introduction of fluorine atoms, the rubber has excellent heat resistance, oxidation resistance, oil resistance, corrosion resistance and atmospheric aging resistance, is widely applied in the fields of aerospace, aviation, automobiles, petroleum, household appliances and the like, and is a key material which cannot be replaced in national defense advanced industry. With the stricter and stricter global restrictions on the emission of automobile exhaust, new environmental protection regulations are being formulated in various countries. The total hydrocarbon emissions from automobiles are increasingly restricted and it is increasingly difficult for the automotive industry to meet this requirement. The fluororubber has excellent barrier property for hydrocarbon permeation, and the fluororubber layer is coated in the fuel hose structure, so that the permeation amount of hydrocarbon can be reduced. The oil-resistant composite pipe with the structure of the inner fluorine rubber and the outer silica gel has good oil resistance and solvent resistance, and the cost of the rubber pipe is greatly reduced. And thus the amount and demand thereof are rapidly increasing.
In addition, the fluorosilicone rubber is also a special silicone rubber, has the advantages of oil resistance, acid and alkali resistance, aromatic hydrocarbon solvent resistance and the like of the fluororubber, also has the advantages of high and low temperature resistance, high resilience, weather resistance, easiness in processing, insulation, low surface energy and physiological inertia of the silicone rubber, is the only elastomer material which can be used for a long time in a fuel environment at the temperature of-60-210 ℃ at present, and has wide application in the fields of aerospace, automobiles, war industry and the like. In recent years, fluorosilicone has begun to be used as an inner lining material for turbocharger tubes, which are used in well-known automobile brands such as Benz and Baoma.
However, since the price of the fluororubber and the fluororubber is expensive, the single turbocharger tube cannot be made of fluororubber or fluorosilicone rubber. Therefore, from the viewpoint of cost, fluororubber or fluorosilicone rubber is used as the inner liner material, and inexpensive silicone rubber is used for the outer liner material. Such as the turbocharging duct production process described in patent cn201110077173. x. However, the fluororubber or fluorosilicone rubber and silicone rubber have very different compositions and structures, and the direct adhesion cannot achieve a satisfactory adhesion effect. Patent ZL200820227025.5 discloses a pressurized air outlet pipe, which uses an aramid cloth reinforced layer as an adhesive layer between inner layer fluorine rubber and outer layer silicon rubber. The rubber tube with the structure is easy to reduce the adhesive bonding strength when being used in a high-temperature environment for a long time, so that the inner layer of the fluororubber is easy to fall off. In addition, the current composite pipes with inner fluorine rubber and outer silica gel are made of fluororubber vulcanized by peroxide, which is expensive, and the fluororubber of a bisphenol A vulcanization system with relatively low price cannot be used due to process limitation. The patent CN 201110406819.4 applied by Dow Corning company modifies fluorosilicone gel and silica gel to realize the adhesion of the fluorosilicone gel and the silica gel; CN201410486817.4 uses an intermediate layer for adhesion purposes. The above methods all achieve the purpose of adhesion by a chemical adhesion method, and these special fluororubbers, fluorosilicone, silica gels or intermediate layers increase the cost and have certain influence on the performance of the rubber. In addition, the inner layer of the fluorosilicone adhesive is easy to fall off due to adhesion failure when the hose is used at high temperature.
Disclosure of Invention
In order to overcome the defects, the invention provides the composite oil-resistant rubber tube with the inner fluorine and the outer silicon and the preparation process thereof, which can effectively bond the inner layer of fluorine rubber or fluorine-silicon rubber with silica gel, and the inner layer of oil-resistant rubber can not fall off permanently, and the rubber tube can be used for a high-temperature heat-conducting oil tube, a turbocharging tube, a supercharging air outlet tube and the like.
In order to achieve the purpose, the invention adopts the following preparation process:
s1: respectively adding vulcanizing agents into the silica gel, the fluororubber or the fluorosilicone rubber, preparing a film with the thickness of 0.2-5 mm on a calender or an open mill, cutting the film for the middle layer into a film for the middle layer with the width of 5-50 mm, and compounding the silica gel film for the outer layer with the reinforced fiber fabric according to requirements to obtain a silica gel/fiber fabric film;
s1: winding a circle of fluorine film or fluorine silicon film on the rubber hose core mould as a lining layer;
s2: spirally winding a silicon film for the middle layer on the lining layer, and keeping a gap of 5-50 mm between different films in the same axial direction;
s3: spirally winding a middle layer on the silica gel sheet by using a fluorine rubber sheet or a fluorine silicon rubber sheet, wherein one method is that the fluorine rubber sheet or the fluorine silicon rubber sheet presses a gap and a small part of the silica gel sheet is wound in parallel with the silica gel sheet, and the other method is that the fluorine rubber sheet or the fluorine silicon rubber sheet and the silica gel sheet are spirally wound in a crossed manner;
s4: winding one or more circles of silica gel sheets or silica gel/fiber fabric rubber sheets outside the middle layer;
s5: and after the outer layer of the silica gel is wound with heat-shrinkable water cloth or cellophane, vulcanizing the silica gel in a heat drying channel or a vulcanizing tank to obtain the composite oil-resistant rubber hose with silicon outside fluorine or silicon outside fluorine.
Further, the silica gel is a hot-vulcanized silicone rubber compound with any grade, preferably a peroxide-vulcanized silicone rubber compound with Shore hardness of 50-70 degrees;
further, the fluorine rubber is hot vulcanized fluorine rubber compound with any grade, preferably peroxide vulcanized fluorine rubber compound with Shore hardness of 60-80 degrees;
further, the fluorosilicone rubber is hot-vulcanized fluorosilicone rubber compound with any grade, preferably peroxide-vulcanized fluorosilicone rubber compound with Shore hardness of 50-70 degrees;
further, the reinforced fiber fabric is any one of aramid fabric, nylon fabric, polyester fabric, polyimide fabric and glass fiber fabric, preferably aramid fabric and nylon fabric;
further, the vulcanizing agent is a peroxide vulcanizing agent, preferably bis-tetra-, bis-penta-, Benzoyl Peroxide (BPO) or dicumyl peroxide (DCP).
Compared with the prior art, the invention has the beneficial effects that:
(1) by utilizing the technology provided by the invention, the oil-resistant composite rubber tube can be prepared by adopting the conventional grade of silicon rubber, fluorine rubber or fluorine silicon rubber.
(2) The invention has the advantages that the invention has no limit to raw materials, and the lining layer and the silica gel layer are firmly compounded and can not fall off permanently. It is especially suitable for high temperature oil pipe, turbine booster pipe, booster air outlet pipe and other products.
Drawings
FIG. 1 is a flow chart of the preparation process of the present invention.
In the figure: 1-core mould, 2-inner layer of winding fluorine rubber or fluorine silicon rubber, 3-middle layer of winding silica gel, 4-middle layer of winding fluorine rubber or fluorine silicon rubber, and 5-outer layer of winding silica gel or silica gel/fiber fabric.
Detailed Description
Reference will now be made in detail to various exemplary embodiments of the invention, the detailed description should not be construed as limiting the invention but as a more detailed description of certain aspects, features and embodiments of the invention.
It will be apparent to those skilled in the art that various modifications and variations can be made in the specific embodiments of the present disclosure without departing from the scope or spirit of the disclosure. Other embodiments will be apparent to those skilled in the art from consideration of the specification. The specification and examples are exemplary only.
Example 1
(1) Adding a vulcanizing agent into the Xinyue silica gel CHN6600, and preparing a film with the thickness of 2mm on a calender; adding a vulcanizing agent of Biwu into the large-gold peroxide fluororubber G902, and preparing a film with the thickness of 1 mm on a calender; the film used for the middle layer is cut into a film for the middle layer with the width of 20 mm, and the silica gel film used for the outer layer is a silica gel/aramid fabric film obtained by compounding silica gel 6600 added with a double-five vulcanizing agent and aramid fiber cloth on a calender.
(2) Winding a circle of fluorine film on the rubber hose core mould as a lining layer;
(3) spirally winding a silicon film for the middle layer on the lining layer, and keeping a gap of 20 mm between different films in the same axial direction;
(4) spirally winding a fluorine rubber sheet for the middle layer on the silica gel sheet, wherein the fluorine rubber sheet presses the gap and a small part of the silica gel sheet and is wound in parallel with the silica gel sheet;
(5) winding five circles of silica gel/aramid fabric films outside the middle layer;
(6) and (3) winding a heat-shrinkable water cloth on the outer surface of the silica gel outer layer, and vulcanizing in a vulcanizing tank to obtain the inner fluorine and outer silicon composite oil-resistant turbocharging pipe.
Example 2
(1) Adding a vulcanizing agent, namely Shuangerwu, into the Dow Corning silica gel HC50-8110, and preparing a film with the thickness of 3 mm on a calender; fluorinated silicone rubber FSIR-0260 of Forceel high and new materials, Tanshu, is added with vulcanizing agent and prepared into 2mm thick film on a calender; the film used for the middle layer is cut into a film for the middle layer with the width of 30 mm, and the silica gel used for the outer layer adopts a silica gel/aramid fabric film obtained by compounding silica gel HC50-8110 added with a double-five vulcanizing agent and nylon fiber cloth on a calender.
(2) Winding a circle of fluorine film on the rubber hose core mould as a lining layer;
(3) spirally winding a silicon film for the middle layer on the lining layer, and keeping a gap of 20 mm between different films in the same axial direction;
(4) spirally winding a fluorosilicone sheet for the middle layer on the silica gel sheet, wherein the fluorosilicone sheet presses the gap and a small part of the silica gel sheet and is wound in parallel with the silica gel sheet;
(5) winding three circles of silica gel/nylon cloth rubber sheets outside the middle layer;
(6) and after the thermal shrinkage water cloth is wound outside the outer layer of the silica gel, vulcanizing the outer layer of the silica gel in a vulcanizing tank to obtain the inner fluorine silicon and outer silicon composite oil-resistant turbocharging pipe.
Example 3
(1) Adding STARSIL HCR 1860U of Eken silicone silica gel and a vulcanizing agent bis-tetra, and preparing a film with the thickness of 3 mm on an open mill; FSIR-0360 of FSW (fluorinated silicone rubber) of Forceel high and new materials, available in Tanshu, and adding a vulcanizing agent bis-tetrakis to prepare a film with the thickness of 2mm on a calender; the film used for the middle layer is cut into a film with the width of 40 mm for the middle layer, and the silica gel film used for the outer layer is a silica gel/polyester cloth film obtained by compounding silica gel STARSIL HCR 1860U added with a bi-tetra-vulcanizing agent and polyester fiber cloth on a calender.
(2) Winding a circle of fluorine film on the rubber hose core mould as a lining layer;
(3) spirally winding a silicon film for the middle layer on the lining layer, and keeping a gap of 20 mm between different films in the same axial direction;
(4) spirally winding a fluorine-containing silica gel sheet for the middle layer on the silica gel sheet, wherein the fluorine-containing silica gel sheet and the silica gel sheet for the middle layer are spirally wound in a crossed manner;
(5) winding three circles of silica gel/polyester cloth films outside the middle layer;
(6) and winding glass paper outside the outer layer of the silica gel, and vulcanizing through a hot drying channel to obtain the inner fluorine-silicon-outer-silicon composite oil-resistant pipe.
The foregoing is merely an illustrative embodiment of the present invention, and any equivalent changes and modifications made by those skilled in the art without departing from the spirit and principle of the present invention should fall within the protection scope of the present invention.
Claims (4)
1. A composite oil-resistant rubber hose with fluorine inside and silicon outside and a preparation process thereof are characterized in that: the composite rubber pipe consists of a lining layer, a middle layer and a silica gel outer layer, and is prepared by adopting a winding vulcanization process through the following steps:
s1, respectively adding vulcanizing agents into the silica gel, the fluororubber or the fluorosilicone rubber, preparing a film with the thickness of 0.2-5 mm on a calender or an open mill, cutting the film for the middle layer into a film for the middle layer with the width of 5-50 mm, and compounding the silica gel film for the outer layer with the reinforced fiber fabric according to needs to obtain a silica gel/fiber fabric film;
s2: winding a circle of fluorine film or fluorine silicon film on the rubber hose core mould as a lining layer;
s3: spirally winding a silicon film for the middle layer on the lining layer, and keeping a gap of 5-50 mm between different films in the same axial direction;
s4: spirally winding a middle layer on the silica gel sheet by using a fluorine rubber sheet or a fluorine silicon rubber sheet, wherein one method is that the fluorine rubber sheet or the fluorine silicon rubber sheet presses a gap and a small part of the silica gel sheet is wound in parallel with the silica gel sheet, and the other method is that the fluorine rubber sheet or the fluorine silicon rubber sheet and the silica gel sheet are spirally wound in a crossed manner;
s5: winding one or more circles of silica gel sheets or silica gel/fiber fabric rubber sheets outside the middle layer;
s6: and after the outer layer of the silica gel is wound with heat-shrinkable water cloth or cellophane, vulcanizing the silica gel in a heat drying channel or a vulcanizing tank to obtain the composite oil-resistant rubber hose with silicon outside fluorine or silicon outside fluorine.
2. The composite oil-resistant rubber hose with inner fluorine and outer silicon and the preparation process thereof as claimed in claim 1, wherein the silica gel, the fluorine gel and the fluorine silicon gel belong to hot vulcanization type rubber compound.
3. The composite oil-resistant rubber hose with internal fluorine and external silicon and the preparation process thereof as claimed in claim 1, is characterized in that: the reinforced fiber fabric is any one of aramid fiber cloth, nylon cloth, polyester cloth, polyimide cloth and glass fiber cloth.
4. The composite oil-resistant rubber hose with internal fluorine and external silicon and the preparation process thereof as claimed in claim 1, is characterized in that: the composite oil-resistant rubber pipe is particularly suitable for oil-resistant rubber pipes and turbocharging pipes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010012024.4A CN111186154A (en) | 2020-01-07 | 2020-01-07 | Composite oil-resistant rubber hose with inner fluorine and outer silicon and preparation process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010012024.4A CN111186154A (en) | 2020-01-07 | 2020-01-07 | Composite oil-resistant rubber hose with inner fluorine and outer silicon and preparation process thereof |
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| CN111186154A true CN111186154A (en) | 2020-05-22 |
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| CN202010012024.4A Pending CN111186154A (en) | 2020-01-07 | 2020-01-07 | Composite oil-resistant rubber hose with inner fluorine and outer silicon and preparation process thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3577578B2 (en) * | 1998-01-06 | 2004-10-13 | 株式会社三ツ星 | Composite of fluororubber-based thermoplastic elastomer and molded article thereof |
| CN103644398A (en) * | 2013-12-18 | 2014-03-19 | 北京天元奥特橡塑有限公司 | Synthetic rubber tube provided with fluorine inside and silicone outside and used for automobile-used intercooler as well as preparation method of synthetic rubber tube |
| CN206719563U (en) * | 2017-04-10 | 2017-12-08 | 鹏翔飞控作动系统（西安）有限责任公司 | A kind of aircraft ground refueling flexible pipe |
| CN109931445A (en) * | 2017-12-19 | 2019-06-25 | 刘富全 | A kind of compound oil-resisting rubber hose of the outer silica gel of interior fluorine glue |
| CN109927360A (en) * | 2017-12-19 | 2019-06-25 | 刘富全 | A kind of compound oil-resisting rubber hose |
-
2020
- 2020-01-07 CN CN202010012024.4A patent/CN111186154A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3577578B2 (en) * | 1998-01-06 | 2004-10-13 | 株式会社三ツ星 | Composite of fluororubber-based thermoplastic elastomer and molded article thereof |
| CN103644398A (en) * | 2013-12-18 | 2014-03-19 | 北京天元奥特橡塑有限公司 | Synthetic rubber tube provided with fluorine inside and silicone outside and used for automobile-used intercooler as well as preparation method of synthetic rubber tube |
| CN206719563U (en) * | 2017-04-10 | 2017-12-08 | 鹏翔飞控作动系统（西安）有限责任公司 | A kind of aircraft ground refueling flexible pipe |
| CN109931445A (en) * | 2017-12-19 | 2019-06-25 | 刘富全 | A kind of compound oil-resisting rubber hose of the outer silica gel of interior fluorine glue |
| CN109927360A (en) * | 2017-12-19 | 2019-06-25 | 刘富全 | A kind of compound oil-resisting rubber hose |
Non-Patent Citations (2)
| Title |
|---|
| 樊保才: "《玻璃钢加工工艺手糊成型与缠绕成型操作手册》", 30 June 2014, 河北科学技术出版社 * |
| 橡胶工业原材料与装备简明手册编审委员会编著: "《橡胶工业原材料与装备简明手册 2016年版》", 30 November 2016, 北京理工大学出版社 * |
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Application publication date: 20200522 |
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