CN114410038A - Conductive fluororubber, fuel pipeline and application thereof, preparation method of fuel pipeline and fuel system - Google Patents
Conductive fluororubber, fuel pipeline and application thereof, preparation method of fuel pipeline and fuel system Download PDFInfo
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- CN114410038A CN114410038A CN202111356751.3A CN202111356751A CN114410038A CN 114410038 A CN114410038 A CN 114410038A CN 202111356751 A CN202111356751 A CN 202111356751A CN 114410038 A CN114410038 A CN 114410038A
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- 239000000446 fuel Substances 0.000 title claims abstract description 105
- 229920001973 fluoroelastomer Polymers 0.000 title claims abstract description 72
- 238000002360 preparation method Methods 0.000 title abstract description 11
- 239000006229 carbon black Substances 0.000 claims abstract description 16
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 14
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims abstract description 12
- 239000000920 calcium hydroxide Substances 0.000 claims abstract description 12
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims abstract description 12
- 239000000395 magnesium oxide Substances 0.000 claims abstract description 12
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 12
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000004014 plasticizer Substances 0.000 claims abstract description 12
- 239000000654 additive Substances 0.000 claims abstract description 7
- 230000000996 additive effect Effects 0.000 claims abstract description 7
- 239000010410 layer Substances 0.000 claims description 238
- 239000000463 material Substances 0.000 claims description 49
- 230000004888 barrier function Effects 0.000 claims description 35
- 239000011241 protective layer Substances 0.000 claims description 20
- 239000004760 aramid Substances 0.000 claims description 19
- 229920003235 aromatic polyamide Polymers 0.000 claims description 19
- 230000003014 reinforcing effect Effects 0.000 claims description 17
- 238000001816 cooling Methods 0.000 claims description 10
- 239000012790 adhesive layer Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 8
- 239000000295 fuel oil Substances 0.000 claims description 7
- 238000009941 weaving Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 239000011265 semifinished product Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 8
- 230000000052 comparative effect Effects 0.000 description 22
- 229920001971 elastomer Polymers 0.000 description 21
- 238000001125 extrusion Methods 0.000 description 18
- 235000019241 carbon black Nutrition 0.000 description 13
- 239000000047 product Substances 0.000 description 13
- XENVCRGQTABGKY-ZHACJKMWSA-N chlorohydrin Chemical compound CC#CC#CC#CC#C\C=C\C(Cl)CO XENVCRGQTABGKY-ZHACJKMWSA-N 0.000 description 11
- 230000005611 electricity Effects 0.000 description 8
- 230000003068 static effect Effects 0.000 description 8
- 238000004073 vulcanization Methods 0.000 description 7
- KUDUQBURMYMBIJ-UHFFFAOYSA-N 2-prop-2-enoyloxyethyl prop-2-enoate Chemical group C=CC(=O)OCCOC(=O)C=C KUDUQBURMYMBIJ-UHFFFAOYSA-N 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 229920006231 aramid fiber Polymers 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 238000010998 test method Methods 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 241001089723 Metaphycus omega Species 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 241000872198 Serjania polyphylla Species 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
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- 230000009286 beneficial effect Effects 0.000 description 1
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- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000013536 elastomeric material Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229920002313 fluoropolymer Polymers 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 210000004400 mucous membrane Anatomy 0.000 description 1
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- 238000013040 rubber vulcanization Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
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- 229920002725 thermoplastic elastomer Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
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Images
Classifications
-
- 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
-
- 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
- C08K3/02—Elements
- C08K3/04—Carbon
-
- 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
- F16L11/08—Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall
-
- 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
- C08K2003/2206—Oxides; Hydroxides of metals of calcium, strontium or barium
-
- 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
- C08K2003/2217—Oxides; Hydroxides of metals of magnesium
- C08K2003/222—Magnesia, i.e. magnesium oxide
-
- 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
- C08K2201/00—Specific properties of additives
- C08K2201/001—Conductive additives
-
- 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
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
-
- 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
Abstract
The invention provides conductive fluororubber, a fuel pipeline and application thereof, a preparation method of the fuel pipeline and a fuel system, and relates to the technical field of automobile fuel systems, wherein the conductive fluororubber comprises the following components in parts by weight: every 100 parts of fluororubber are prepared with 10-15 parts of calcium hydroxide, 10-15 parts of magnesium oxide, 3-5 parts of plasticizer, 3-5 parts of flow additive, 20-40 parts of conductive carbon black and 10-30 parts of common carbon black. The conductive fluororubber solves the technical problem that the conductivity and the mechanical property cannot be better considered, and achieves the technical effect of better considering the permeation resistance, the conductivity and the mechanical property of the fluororubber.
Description
Technical Field
The invention relates to the technical field of automobile fuel systems, in particular to conductive fluororubber, a fuel pipeline and application thereof, a preparation method of the fuel pipeline and a fuel system.
Background
The automobile fuel pipe comprises a fuel oil conveying pipe and a fuel oil pipe for supplying fuel to an engine, is an important safety part, and has higher requirements on the performance of materials.
In order to meet the harsh working environment in a fuel system, the main structures of the current automobile fuel pipeline from inside to outside are FKM/ECO/THV/ECO (AEM), FKM/ECO/THV/ECO/AR/AEM (ECO), FKM/F-TPV (THV)/ECO/AR/AEM (ECO) and the like, wherein the FKM is fluororubber, the ECO is chlorohydrin rubber, the AR is aramid yarn, the F-TPV (THV) is fluororesin, and the AEM is ethylene acrylate rubber. It can be seen that the non-conductive fluorine adhesive is adopted as the inner layer in the current four-layer, five-layer and six-layer fuel pipelines, and the fuel can rub the inner layer of the fuel pipeline to generate the condition of charge accumulation, so that static electricity is generated to cause safety accidents, and the improvement of the safety performance of the automobile is very unfavorable.
In view of the above, the present invention is particularly proposed.
Disclosure of Invention
One of the purposes of the invention is to provide conductive fluororubber which can better give consideration to the permeation resistance, the conductivity and the mechanical property of the fluororubber.
The invention also aims to provide a fuel pipeline, which can lead out static electricity generated by friction between fuel and an inner layer of the fuel pipeline in time so as to achieve the aim of improving safety and has better mechanical property.
The invention also aims to provide a preparation method of the fuel pipeline.
The fourth purpose of the invention is to provide a fuel oil system.
The fifth purpose of the invention is to provide the application of the fuel pipeline in the automobile.
In order to achieve the above purpose of the present invention, the following technical solutions are adopted:
in a first aspect, the invention provides a conductive fluororubber, which comprises the following components in parts by weight:
every 100 parts of fluororubber are prepared with 10-15 parts of calcium hydroxide, 10-15 parts of magnesium oxide, 3-5 parts of plasticizer, 3-5 parts of flow additive, 20-40 parts of conductive carbon black and 10-30 parts of common carbon black.
Further, the conductive fluororubber comprises the following components in parts by weight:
every 100 parts of fluororubber are prepared with 12-14 parts of calcium hydroxide, 12-14 parts of magnesium oxide, 3-4 parts of plasticizer, 3-4 parts of flow additive, 25-35 parts of conductive carbon black and 15-25 parts of common carbon black.
In a second aspect, the present invention provides a fuel line comprising a conductive layer;
the conducting layer is an inner layer;
the conductive layer comprises the conductive fluororubber.
Further, the fuel pipeline sequentially comprises from inside to outside: a conductive layer, a first adhesive layer, a barrier layer, and a second adhesive layer;
the first bonding layer comprises a layer of ECO material;
the barrier layer comprises at least one of a layer of F-TPV material and a layer of THV material;
the second bonding layer includes a layer of ECO material.
Further, the fuel pipeline sequentially comprises from inside to outside: the barrier layer comprises a conductive layer, a first bonding layer, a barrier layer, a second bonding layer, a reinforcing layer and a protective layer;
the reinforcing layer comprises an aramid woven layer;
the protective layer includes at least one of a layer of ECO material and a layer of AEM material.
Further, the thickness of the conducting layer is 0.4-1.0 mm;
and/or the thickness of the first bonding layer is 0.5-1.0 mm;
and/or the thickness of the barrier layer is 0.08-1.2 mm.
And/or the thickness of the second bonding layer is 1.0-1.5 mm;
and/or the thickness of the protective layer is 2.0-2.5 mm.
In a third aspect, the invention provides a preparation method of the fuel pipeline, which comprises the following steps:
and extruding the conducting layer, the first bonding layer, the barrier layer and the second bonding layer on the core rod in sequence to obtain the fuel pipeline.
Further, the preparation method comprises the following steps:
sequentially extruding the conducting layer, the first bonding layer, the barrier layer and the second bonding layer on the core rod, weaving the reinforcing layer on the outer surface of the second bonding layer, and extruding the protective layer on the reinforcing layer to obtain a semi-finished pipe blank;
and cooling and vulcanizing the obtained semi-finished product pipe blank to obtain the fuel oil pipeline.
In a fourth aspect, the invention provides a fuel system comprising the fuel pipeline.
In a fifth aspect, the invention provides an application of the fuel pipeline in an automobile.
Compared with the prior art, the invention has at least the following beneficial effects:
the specific components and the dosage proportion of the conductive fluororubber provided by the invention enable the fluororubber to better give consideration to the permeation resistance, the conductivity and the mechanical property, so that the conductive fluororubber not only can achieve the effect of leading out electrostatic charges in time, but also has better permeation resistance and mechanical property.
According to the fuel pipeline provided by the invention, the conductive fluororubber layer is used as the inner layer of the fuel pipeline, and static electricity generated by friction between fuel and the fuel pipeline can be led out in time, so that the safety of the fuel pipeline is improved, and the fuel pipeline has a better application effect.
The preparation method of the fuel pipeline provided by the invention has the advantages of simple process and high excellence rate.
The fuel system provided by the invention has higher safety.
The fuel pipeline provided by the invention is applied to automobiles, and has higher safety.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic structural diagram of a fuel line according to an embodiment of the present invention.
Icon: 1-a conductive layer; 2-a first tie layer; 3-a barrier layer; 4-a second tie layer; 5-an enhancement layer; 6-protective layer.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
According to a first aspect of the present invention, there is provided a conductive fluororubber comprising the following components in parts by weight:
every 100 parts of fluororubber are prepared with 10-15 parts of calcium hydroxide, 10-15 parts of magnesium oxide, 3-5 parts of plasticizer, 3-5 parts of flow additive, 20-40 parts of conductive carbon black and 10-30 parts of common carbon black.
The specific components and the dosage proportion of the conductive fluororubber enable the fluororubber to better give consideration to the permeation resistance, the conductivity and the mechanical property, so that the conductive fluororubber not only can achieve the effect of leading out electrostatic charges in time, but also has better permeation resistance and mechanical property.
Typical but non-limiting parts by weight of calcium hydroxide in the present invention are for example 10 parts, 12 parts, 15 parts; typical but non-limiting parts by weight of magnesium oxide are for example 10 parts, 12 parts, 15 parts; typical but non-limiting parts by weight of the plasticizer are for example 3 parts, 4 parts, 5 parts; typical but non-limiting parts by weight of flow aids are for example 3 parts, 4 parts, 5 parts; typical but non-limiting parts by weight of conductive carbon black are for example 20 parts, 30 parts, 40 parts; typical but non-limiting parts by weight of ordinary carbon black are, for example, 10 parts, 20 parts, 30 parts.
In the invention, the calcium hydroxide is used for filling the rubber material, so that the hardness can be improved, the processing difficulty of rubber compound can be reduced, and the cost can be reduced; the magnesium oxide is used as an acid absorbent to neutralize HF which is a byproduct in the vulcanization process and promote rubber vulcanization; plasticizers include, but are not limited to, rhinestone powder Aflnx54, which functions to improve the processability of the product; flow aids include, but are not limited to, WS-280, which function to improve sizing fluidity and prevent mucous membranes; the conductive carbon black is carbon black with low resistance or high resistance performance, provides a channel for electron movement, and can endow a product with a conductive or antistatic effect; the primary function of conventional carbon blacks is to increase the hardness of the compound, improve processability, and reduce cost, and the present invention includes, but is not limited to, at least one of carbon black N550 and carbon black N774.
In a preferred embodiment, the conductive fluororubber of the present invention comprises the following components in parts by weight:
every 100 parts of fluororubber are prepared with 12-14 parts of calcium hydroxide, 12-14 parts of magnesium oxide, 3-4 parts of plasticizer, 3-4 parts of flow additive, 25-35 parts of conductive carbon black and 15-25 parts of common carbon black.
The invention optimizes the dosage and proportion of each component, so that the conductive fluororubber has more excellent performance.
According to a second aspect of the present invention, there is provided a fuel line, the fuel line of the present invention comprising an electrically conductive layer;
the conductive layer of the invention is an inner layer;
the conductive layer of the present invention includes the above-described conductive fluororubber.
According to the fuel pipeline, the conductive fluororubber layer is used as the inner layer of the fuel pipeline, and static electricity generated by friction between fuel and the fuel pipeline can be led out in time, so that the safety of the fuel pipeline is improved, and the fuel pipeline has a better application effect.
In a preferred embodiment, the fuel line of the present invention comprises, in order from the inside to the outside: a conductive layer, a first adhesive layer, a barrier layer, and a second adhesive layer;
wherein the conductive layer includes, but is not limited to, a conductive fluororubber layer(ii) a The first adhesive layer includes but is not limited to a layer of ECO material, ECO being a chlorohydrin rubber, the first adhesive layer serving to bond the conductive layer and the barrier layer; the barrier layer includes, but is not limited to, a layer of F-TPV and a layer of THV, the F-TPV and the THV being a fluororesin, the F-TPV being a product of Japan Dajin, all known as Fluoro TPV, a thermoplastic elastomeric material having properties intermediate between those of a fluororesin and a fluoroelastomer, the THV being a product of 3M company, USA, and optionally having a 3M brandTM DyneonTM Fluoroplastic THV 500GZ，3MTM DyneonTMFluoroplastic THV 815GZ, and the like; the second bonding layer includes, but is not limited to, a layer of ECO material.
The barrier layer of the invention can be a F-TPV material layer alone or a THV material layer alone; the barrier layer of the present invention may also be a combination of a layer of F-TPV material and a layer of THV material, in particular, a layer of F-TPV material as an inner layer and a layer of THV material as an outer layer, or a layer of THV material as an inner layer and a layer of F-TPV material as an outer layer.
A typical structure of a fuel pipeline from inside to outside is FKMbond/ECO/F-TPV (THV)/ECO, conductive fluororubber FKMbond is used as a conductive layer, chlorohydrin rubber ECO is used as a first bonding layer, fluororesin F-TPV and/or fluororesin THV is used as a barrier layer, and chlorohydrin rubber ECO is used as a second bonding layer.
In a preferred embodiment, the fuel line of the present invention comprises, in order from the inside to the outside: the barrier layer comprises a conductive layer, a first bonding layer, a barrier layer, a second bonding layer, a reinforcing layer and a protective layer;
wherein, the enhancement layer includes but not limited to aramid woven layer, and the protective layer includes but not limited to ECO material layer and AEM material layer, and AEM is ethylene acrylate rubber.
It should be noted that the protective layer of the present invention may be an ECO material layer alone, or may be an AEM material layer alone; the barrier layer of the present invention may also be a combination of a layer of ECO material and a layer of AEM material, in particular, with the layer of ECO material as an inner layer and the layer of AEM material as an outer layer, or the layer of AEM material as an inner layer and the layer of ECO material as an outer layer.
A typical structure of a fuel pipeline from inside to outside is FKMbond/ECO/F-TPV (THV)/ECO/AR/ECO (AEM), conductive fluororubber FKMbond is used as a conductive layer, chlorohydrin rubber ECO is used as a first bonding layer, fluororesin F-TPV and/or fluororesin THV is used as a barrier layer, chlorohydrin rubber ECO is used as a second bonding layer, aramid yarn braided layer AR is used as a reinforcing layer, ethylene acrylate rubber AEM and/or chlorohydrin rubber ECO is used as a protective layer, and the structure can lead static electricity generated by friction between the inner wall of the pipeline and fuel and improve the safety of the fuel pipeline.
In a preferred embodiment, the conductive layer of the invention has a thickness of 0.4 to 1.0mm, preferably 0.5 to 0.9mm, with typical but non-limiting thicknesses being for example 0.5mm, 0.6mm, 0.72mm, 0.83mm, 0.73mm, 0.75mm, 0.85mm, 0.9 mm; and/or the first tie layer of the invention has a thickness of 0.5 to 1.0mm, with typical but non-limiting thicknesses such as 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1.0 mm; and/or the barrier layer of the invention has a thickness of 0.08 to 1.2mm, with typical but non-limiting thicknesses being for example 0.08mm, 0.09mm, 0.15mm, 0.35mm, 0.55mm, 0.85mm, 1.0mm, 1.05mm, 1.1mm, 1.15mm, 1.2 mm; and/or the second tie layer of the present invention has a thickness of 1.0 to 1.5mm, with typical but non-limiting thicknesses such as 1.0mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5 mm; and/or the protective layer of the invention has a thickness of 2.0 to 2.5mm, with typical but non-limiting thicknesses being for example 2.1mm, 2.2mm, 2.3mm, 2.4mm, 2.43mm, 2.5 mm.
The fuel pipeline can be suitable for high-pressure pipelines or low-pressure pipelines, for example, after the reinforcing layer and the protective layer are removed, the fuel pipeline structure can be used for low-pressure pipelines such as an oil filling pipe, a carbon tank adsorption pipe, a desorption hose, a fuel evaporation discharge hose and the like, and static electricity generated by friction between the inner wall of the pipeline and fuel can be led out, so that the safety of the fuel pipeline is improved.
A typical structure of a fuel pipeline is shown in figure 1, and comprises the following components in sequence from inside to outside: the conductive layer 1, the first bonding layer 2, the barrier layer 3, the second bonding layer 4, the reinforcing layer 5 and the protective layer 6; wherein, the conducting layer 1 is a conducting fluororubber layer with the thickness of 0.4-1.0mm, which plays the roles of conducting and permeation resistance; the first bonding layer 2 is an ECO material layer, the thickness of the first bonding layer is 0.5-1.0mm, and the first bonding layer plays a role in bonding the conductive layer and the barrier layer; the barrier layer 3 is an F-TPV and/or THV material layer, the thickness of the F-TPV and/or THV material layer is 0.08-1.2mm, and the permeation resistance and barrier effects are achieved; the second bonding layer 4 is an ECO material layer, the thickness of the ECO material layer is 1.0-1.5mm, and the bonding effect is achieved; the reinforcing layer 5 is an aramid woven layer and plays a role in improving the bursting pressure of the fuel pipeline; the protective layer 6 is an AEM and/or ECO material layer with a thickness of 2.0-2.5mm, and has heat and ozone resistance.
According to a third aspect of the present invention, there is provided a method for preparing the above fuel pipeline, comprising the following steps:
and extruding the conducting layer, the first bonding layer, the barrier layer and the second bonding layer on the core rod in sequence to obtain the fuel pipeline.
In a preferred embodiment, the method for preparing a fuel pipeline comprises the following steps:
sequentially extruding a conductive layer, a first bonding layer, a barrier layer and a second bonding layer on the core rod, weaving an enhancement layer on the outer surface of the second bonding layer, and extruding a protection layer on the enhancement layer to obtain a semi-finished pipe blank;
and cooling and vulcanizing the obtained semi-finished pipe blank to obtain the fuel oil pipeline.
A typical method of making a fuel line includes the steps of:
sequentially extruding conductive fluororubber FKMbond as a conductive layer, chlorohydrin rubber ECO as a first bonding layer, fluororesin F-TPV and/or THV as a barrier layer and chlorohydrin rubber ECO as a second bonding layer on a core rod, weaving an Aramid (AR) woven layer as a reinforcing layer on the outer surface of the second bonding layer, and extruding chlorohydrin rubber ECO and/or ethylene acrylate rubber AEM as a protective layer on the reinforcing layer to obtain a semi-finished pipe blank;
and cooling the obtained semi-finished pipe blank, vulcanizing, cleaning and cutting to obtain the fuel pipeline.
The preparation method of the fuel pipeline provided by the invention has the advantages of simple process and high excellence rate.
According to a fourth aspect of the invention, a fuel system is provided comprising the fuel line described above.
The fuel system provided by the invention has higher safety.
According to a fifth aspect of the present invention, there is provided a use of the fuel line described above in a vehicle.
The fuel pipeline provided by the invention is higher in safety when applied to automobiles.
The invention is further illustrated by the following examples. The materials in the examples are prepared according to known methods or are directly commercially available, unless otherwise specified.
Example 1
The conductive fluororubber (FKMcond) of the present example was composed of the following components in parts by weight: 100 parts of fluororubber, 10 parts of calcium hydroxide, 10 parts of magnesium oxide, 5 parts of a plasticizer of rhinestone powder Aflnx54, 3 parts of a flow aid WS-280, 40 parts of conductive carbon black and 10 parts of common carbon black N550.
Example 2
The conductive fluororubber of the embodiment comprises the following components in parts by weight: 100 parts of fluororubber, 20 parts of calcium hydroxide, 8 parts of magnesium oxide, 3 parts of a plasticizer of rhinestone powder Aflnx54, 5 parts of a flow aid WS-280, 30 parts of conductive carbon black and 20 parts of common carbon black N550.
Example 3
The difference between the present embodiment and embodiment 1 is that the conductive fluororubber of the present embodiment is composed of the following components in parts by weight: 100 parts of fluororubber, 15 parts of calcium hydroxide, 13 parts of magnesium oxide, 4 parts of a plasticizer of rhinestone powder Aflnx54, 4 parts of a flow aid WS-280, 25 parts of conductive carbon black and 25 parts of common carbon black N550.
Example 4
The fuel pipeline that this embodiment provided, from interior to exterior do in proper order: the conductive layer 1, the first bonding layer 2, the barrier layer 3, the second bonding layer 4, the reinforcing layer 5 and the protective layer 6;
wherein, the conductive layer 1 is the conductive fluororubber of the embodiment 1, and the thickness thereof is 0.8 mm; the first bonding layer 2 is an ECO material layer, and the thickness of the first bonding layer is 0.5 mm; the barrier layer 3 is a F-TPV material layer, and the thickness of the F-TPV material layer is 0.08 mm; the second bonding layer 4 is an ECO material layer, and the thickness of the ECO material layer is 1.0 mm; the reinforcing layer 5 is an aramid woven layer; the protective layer 6 is a layer of AEM material having a thickness of 2.0 mm.
The preparation method of the fuel pipeline comprises the following steps:
(1) preparing a semi-finished tube blank:
extrusion of the first layer of conductive fluororubber: selecting a single-screw extruder, wherein the temperature of a machine head is 83 ℃, the temperature of an extrusion section is 55 ℃, the temperature of a plasticizing section is 50 ℃, and the temperature of a screw section is 43 ℃;
extrusion of the second layer ECO: selecting a single-screw extruder, wherein the temperature of a machine head is 83 ℃, the temperature of an extrusion section is 76 ℃, the temperature of a plasticizing section is 70 ℃, and the temperature of a screw section is 60 ℃;
wherein the first layer of conductive fluororubber and the second layer of ECO are compositely extruded;
extrusion of the third layer F-TPV: selecting a single-screw extruder, wherein the temperature of a machine head is 270 ℃, the temperature of an extrusion section is 260 ℃, the temperature of a plasticizing section is 260 ℃, the temperature of a screw section is 260 ℃, and the temperature of a feeding section is 260 ℃;
extrusion of the fourth layer of ECO: selecting a single-screw extruder, wherein the temperature of a machine head is 83 ℃, the temperature of an extrusion section is 76 ℃, the temperature of a plasticizing section is 70 ℃, and the temperature of a screw section is 60 ℃;
a fifth layer adopts a braided structure, and an aramid fiber reinforced layer is braided on the outer surface of the fourth layer of ECO;
extrusion of the sixth layer of AEM: selecting a single-screw extruder, wherein the temperature of a machine head is 72 ℃, the temperature of an extrusion section is 68 ℃, the temperature of a plasticizing section is 63 ℃, and the temperature of a screw section is 55 ℃;
(2) cooling the semi-finished pipe blank:
extruding the rubber material from a machine head, wherein the temperature is higher, cooling and qualitative determination are required before a parking stage, and cooling is carried out through cooling water at 10-20 ℃;
(3) vulcanizing in a steam vulcanizing tank:
sleeving the semi-finished pipe blank after the standing time on the product core rod, and putting the semi-finished pipe blank into a steam vulcanizing tank for vulcanizing;
vulcanization temperature: 160-l70 ℃, vulcanization time: 20-40 min;
(4) and (3) preparing a finished product:
and taking out the product after vulcanization, cleaning and cutting to obtain a fuel pipeline product.
Example 5
The difference between this embodiment and embodiment 1 is that the fuel pipeline provided in this embodiment does not have the first adhesive layer 2, and the conductive layer 1 of this embodiment is the conductive fluororubber of embodiment 2.
The preparation method of the fuel pipeline comprises the following steps:
(1) preparing a semi-finished tube blank:
extrusion of the first layer of conductive fluororubber: selecting a single-screw extruder, wherein the temperature of a machine head is 83 ℃, the temperature of an extrusion section is 55 ℃, the temperature of a plasticizing section is 50 ℃, and the temperature of a screw section is 43 ℃;
extrusion of the second layer F-TPV: selecting a single-screw extruder, wherein the temperature of a machine head is 270 ℃, the temperature of an extrusion section is 260 ℃, the temperature of a plasticizing section is 260 ℃, the temperature of a screw section is 260 ℃, and the temperature of a feeding section is 260 ℃;
extrusion of the third layer ECO: selecting a single-screw extruder, wherein the temperature of a machine head is 83 ℃, the temperature of an extrusion section is 76 ℃, the temperature of a plasticizing section is 70 ℃, and the temperature of a screw section is 60 ℃;
the fourth layer adopts a woven structure, and an aramid fiber reinforced layer is woven on the outer surface of the third layer of ECO;
extrusion of fifth layer AEM: selecting a single-screw extruder, wherein the temperature of a machine head is 72 ℃, the temperature of an extrusion section is 68 ℃, the temperature of a plasticizing section is 63 ℃, and the temperature of a screw section is 55 ℃;
(2) cooling the semi-finished pipe blank:
extruding the rubber material from a machine head, wherein the temperature is higher, cooling and qualitative determination are required before a parking stage, and cooling is carried out through cooling water at 10-20 ℃;
(3) vulcanizing in a steam vulcanizing tank:
sleeving the semi-finished pipe blank after the standing time on the product core rod, and putting the semi-finished pipe blank into a steam vulcanizing tank for vulcanizing;
vulcanization temperature: 160-l70 ℃, vulcanization time: 20-40 min;
(4) and (3) preparing a finished product:
and taking out the product after vulcanization, cleaning and cutting to obtain a fuel pipeline product.
Comparative example 1
Common fluororubbers FKM.
Comparative example 2
The conductive carbon black of this comparative example was 10 parts, and the other components and parts by weight were the same as in example 1, to obtain a conductive fluororubber (FKMcond).
Comparative example 3
The conductive carbon black of this comparative example was 50 parts, and the other components and parts by weight were the same as in example 1, to obtain a conductive fluororubber (FKMbond).
Comparative example 4
The general carbon black N550 of this comparative example was 40 parts, and the other components and parts by weight were the same as in example 1, to obtain a conductive fluororubber (FKMbond).
Comparative example 5
This comparative example differs from example 4 in that it replaces the conductive fluoro-rubber FKMcond of example 4 with the ordinary fluoro-rubber FKM of comparative example 1, the procedure and the remaining parameters are the same as in example 4, and a fuel line is obtained.
Comparative example 6
This comparative example differs from example 5 in that it replaces the electrically conductive fluoro rubber FKMcond of example 5 with the ordinary fluoro rubber FKM of comparative example 1 to obtain a fuel line.
Experimental example 1
The mechanical properties and conductivity data of the conductive fluororubbers FKMcond obtained in examples 1 to 3, the general fluororubber FKM of comparative example 1, and the conductive fluororubbers FKMcond of comparative examples 2 to 4 were measured and shown in table 1.
The mechanical property testing method comprises the following steps: GB/T528-2009 determination of tensile stress strain performance of vulcanized rubber or thermoplastic rubber;
test method of conductivity: SAJ 2260;
TABLE 1
In table 1, the mechanical properties of the conductive fluororubbers FKMcond provided in examples 1 to 3 of the present invention are similar to those of the general fluororubber FKM of comparative example 1, which proves that the conductive fluororubbers FKMcond provided in the present invention have better mechanical properties; meanwhile, the conductive fluororubber FKMbond provided by the embodiments 1-3 of the invention better considers the mechanical property and the conductive property, and is stronger than the conductive fluororubber FKMbond of the comparative examples 2-4, which proves that the specific dosage proportion of the conductive fluororubber FKMbond can effectively improve the comprehensive performance of the product.
The resistivity, adhesive strength and permeation resistance of the fuel pipes obtained in examples 4 to 5 and comparative examples 5 to 6 were measured to obtain data, which are shown in tables 2 and 3.
The resistivity test method comprises the following steps: DIN73379 (fuel hose for road vehicle);
method for testing adhesive strength: GB/T14905-2009 determination of adhesion strength between layers of rubber and plastic hoses
Test method for permeation resistance: SAEJ 30-rubber tube for fuel oil and engine oil;
TABLE 2
Wherein FKMbond is conductive fluororubber, FKM is non-conductive fluororubber, ECO is chlorohydrin rubber, AR is aramid fiber wire
In table 2, as can be seen from the comparison between example 4 and comparative example 5, the fuel line FKMcond/ECO/F-TPV/ECO/AR/AEM obtained in example 4 has a resistivity of < 1M Ω, has conductivity, and demonstrates its ability to conduct static electricity; the adhesion and permeation resistance of the fuel pipeline obtained in the example 4 are similar to those of the fuel pipeline FKM/ECO/F-TPV/ECO/AR/AEM of the comparative example 5, and the fuel pipeline can replace the common fuel pipeline on the market.
TABLE 3
In Table 3, as can be seen from the comparison between example 5 and comparative example 6, the fuel line FKMbond/F-TPV/ECO/AR/AEM obtained in example 5 has a resistivity of < 1 M.OMEGA.and has conductivity, demonstrating its ability to conduct static electricity; the adhesion and permeation resistance of the fuel pipeline obtained in the example 5 are similar to those of the fuel pipeline FKM/F-TPV/ECO/AR/AEM in the comparative example 6, and the fuel pipeline can replace the common fuel pipeline on the market.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. The conductive fluororubber is characterized by comprising the following components in parts by weight:
every 100 parts of fluororubber are prepared with 10-15 parts of calcium hydroxide, 10-15 parts of magnesium oxide, 3-5 parts of plasticizer, 3-5 parts of flow additive, 20-40 parts of conductive carbon black and 10-30 parts of common carbon black.
2. The conductive fluororubber according to claim 1, wherein the conductive fluororubber comprises the following components in parts by weight:
every 100 parts of fluororubber are prepared with 12-14 parts of calcium hydroxide, 12-14 parts of magnesium oxide, 3-4 parts of plasticizer, 3-4 parts of flow additive, 25-35 parts of conductive carbon black and 15-25 parts of common carbon black.
3. A fuel line comprising an electrically conductive layer;
the conducting layer is an inner layer;
the conductive layer comprises the conductive fluororubber according to claim 1 or 2.
4. The fuel line of claim 3, comprising, in order from the inside out: a conductive layer, a first adhesive layer, a barrier layer, and a second adhesive layer;
the first bonding layer comprises a layer of ECO material; the barrier layer comprises at least one of a layer of F-TPV material and a layer of THV material;
the second bonding layer includes a layer of ECO material.
5. The fuel line of claim 4, comprising, in order from the inside out: the barrier layer comprises a conductive layer, a first bonding layer, a barrier layer, a second bonding layer, a reinforcing layer and a protective layer;
the reinforcing layer comprises an aramid woven layer;
the protective layer includes at least one of a layer of ECO material and a layer of AEM material.
6. Fuel pipeline according to any one of claims 3 to 5, characterized in that the thickness of the conductive layer is 0.4-1.0 mm;
and/or the thickness of the first bonding layer is 0.5-1.0 mm;
and/or the thickness of the barrier layer is 0.08-1.2 mm;
and/or the thickness of the second bonding layer is 1.0-1.5 mm;
and/or the thickness of the protective layer is 2.0-2.5 mm.
7. A method of making a fuel line as claimed in any one of claims 3 to 6, including the steps of:
and extruding the conducting layer, the first bonding layer, the barrier layer and the second bonding layer on the core rod in sequence to obtain the fuel pipeline.
8. The method of claim 7, comprising the steps of:
sequentially extruding the conducting layer, the first bonding layer, the barrier layer and the second bonding layer on the core rod, weaving the reinforcing layer on the outer surface of the second bonding layer, and extruding the protective layer on the reinforcing layer to obtain a semi-finished pipe blank;
and cooling and vulcanizing the obtained semi-finished product pipe blank to obtain the fuel oil pipeline.
9. A fuel system comprising a fuel line according to any one of claims 3 to 6.
10. Use of a fuel line according to any one of claims 3 to 6 in a motor vehicle.
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