CN109265837B - High-thermal-conductivity anti-aging automobile three-component acrylic rubber pipe and preparation method thereof - Google Patents
High-thermal-conductivity anti-aging automobile three-component acrylic rubber pipe and preparation method thereof Download PDFInfo
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
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Abstract
The invention relates to the technical field of rubber tubes for automobiles, in particular to a high-thermal-conductivity and aging-resistant polypropylene tube for automobiles, which is prepared from ethylene propylene diene monomer, a polyolefin thermoplastic elastomer, sericite, biomass ceramic, polyacrylonitrile-based carbon fiber, zinc oxide, stearic acid, an anti-aging agent RD, an anti-aging agent MB, a plasticizer, a titanate acid coupling agent and a vulcanizing agent, wherein the biomass ceramic is prepared by uniformly mixing a silane mixture, a biomass material and a nano metal oxide and then calcining in an oxygen-isolated manner. The plasticizer is a mixture of disproportionated rosin, turpentine, C5 petroleum resin and chlorinated fatty acid ester. The ethylene propylene diene monomer tube for the automobile has the advantages of high thermal conductivity, good aging resistance, strong mechanical property and simple preparation process, and can meet the use requirement of the automobile on the ethylene propylene diene monomer tube.
Description
Technical Field
The invention relates to the technical field of rubber tubes for automobiles, in particular to a high-thermal-conductivity anti-aging ternary polypropylene rubber tube for an automobile and a preparation method thereof.
Background
Ethylene-propylene-diene monomer is a terpolymer of ethylene, propylene and a non-conjugated diene and belongs to a non-polar saturated structure, wherein the main polymer chain of the ethylene-propylene-diene monomer is fully saturated, so that the ethylene-propylene-diene monomer can resist heat, light and oxidation. The ethylene propylene diene monomer rubber can be greatly filled with oil and carbon black, has good chemical stability and stronger wear resistance, elasticity and oil resistance, so the ethylene propylene diene monomer rubber has wide application, can be used as a tire side, an adhesive tape, an inner tube of an automobile and parts of the automobile, can also be used as a wrapping of an electric wire and a cable and high-pressure and ultrahigh-pressure insulating materials, and is particularly used for sealing parts in a hydraulic brake hose, an air-conditioning ventilation pipeline, an engine cooling system and an air-conditioning refrigeration system of the automobile, a hose for conveying cooling liquid and the like. However, since the working condition environment of the automobile is complex, the rubber hose is in a high-temperature, high-vibration and solvent swelling environment, and the rubber hose is required to have relatively harsh aging resistance and relatively high heat conductivity, so that heat can be dissipated in time. And at present, the automobile industry is rapidly developed, and the technology upgrading speed of automobile parts is high, so that higher application requirements are provided for the ethylene propylene diene monomer rubber tube.
Disclosure of Invention
In order to meet the higher requirements of the conventional ethylene propylene diene monomer rubber pipe applied to automobiles, the invention aims to provide the high-heat-conductivity and aging-resistant propylene diene monomer rubber pipe for the automobiles, which has stronger aging resistance and high heat conductivity and meets the application requirements of the ethylene propylene diene monomer rubber pipe on the automobiles.
The invention also aims to provide a preparation method of the ternary polypropylene rubber pipe with high thermal conductivity and aging resistance for automobiles.
The invention provides the following technical scheme:
the high-thermal-conductivity anti-aging ternary acrylic rubber pipe for the automobile is prepared from the following components in parts by weight: 80-100 parts of ethylene propylene diene monomer, 20-30 parts of polyolefin thermoplastic elastomer, 30-40 parts of sericite, 30-50 parts of biomass ceramic, 10-20 parts of polyacrylonitrile-based carbon fiber, 5-8 parts of zinc oxide, 1-3 parts of stearic acid, 2-5 parts of anti-aging agent RD, 2-5 parts of anti-aging agent MB, 6-10 parts of plasticizer, 1-5 parts of titanate acid coupling agent and 3-5 parts of vulcanizing agent.
The polypropylene-diene monomer tube is preferably prepared from 88-96 parts by weight of ethylene propylene diene monomer, 24-28 parts by weight of polyolefin thermoplastic elastomer, 33-37 parts by weight of sericite, 38-46 parts by weight of biomass ceramic, 12-17 parts by weight of polyacrylonitrile-based carbon fiber, 6-7 parts by weight of zinc oxide, 1.5-2.5 parts by weight of stearic acid, 3-4 parts by weight of anti-aging agent RD, 3-4 parts by weight of anti-aging agent MB, 7-9 parts by weight of plasticizer, 2-4 parts by weight of titanate acid coupling agent and 3.6-4.8 parts by weight of vulcanizing agent.
As a preferred aspect of the present invention, the biomass ceramic is made by the following process: placing the silane mixture in ethanol according to the volume ratio of 1: 3-5, uniformly stirring, uniformly mixing the biomass material and the nano metal oxide, then adding the mixture into the silane mixture/ethanol, stirring for 24-36 h, wherein the mass ratio of the biomass material to the silane mixture to the nano metal oxide is 1: 1.2-1.5: 1-2, then placing the mixture in a nitrogen environment at 670-700 ℃ for drying for 5-8 h, crushing, grinding, then placing the mixture in a nitrogen environment at 670-700 ℃ for calcining for 2-3 h, then heating to 850-880 ℃ for calcining for 2-3 h, then continuously heating to 1100-1300 ℃ for calcining for 4-6 h, then cooling, and crushing to 400-500 meshes.
Preferably, the biomass material is one of bamboo powder, wood dust, soybean straw powder and cotton straw powder with the particle size of 100-200 meshes.
Preferably, the nano metal oxide is a mixture of bismuth trioxide, antimony trioxide and manganese trioxide, and the mass ratio of the bismuth trioxide to the antimony trioxide to the manganese trioxide is 1: 0.5-1: 1.2-2.
Preferably, the silane mixture is a mixture of methyltriethoxysilane and bisphenol A epoxy resin, and the mass ratio is 1: 0.2-0.4.
Preferably, the plasticizer is a mixture of 10-15 parts by weight of disproportionated rosin, 7-12 parts by weight of turpentine, 2-6 parts by weight of C5 petroleum resin and 2-6 parts by weight of chlorinated fatty acid ester.
The polypropylene-diene monomer tube for the automobile is prepared by taking ethylene propylene diene monomer as a main body and assisting a polyolefin thermoplastic elastomer, sericite, biomass ceramic, polyacrylonitrile-based carbon fiber, zinc oxide, stearic acid, an anti-aging agent RD, an anti-aging agent MB, a plasticizer, a titanate acid coupling agent and a vulcanizing agent. The polyolefin thermoplastic elastomer has high elasticity and high mechanical strength, and can enhance the tensile strength of the rubber tube. Meanwhile, the polyolefin thermoplastic elastomer and the ethylene propylene diene monomer have good thermodynamic compatibility, so that the heat resistance and the comprehensive mechanical property of the rubber pipe can be improved, and the aging resistance of the rubber pipe can be improved. In the biomass ceramic, bamboo powder, wood dust, soybean straw powder or cotton straw powder are carbonized in a nitrogen oxygen-insulated environment to form a porous biochar structure, methyltriethoxysilane and bisphenol A epoxy resin in a silane mixture are mixed to form a cross-linked network structure, the biochar structure is loaded and calcined through oxygen insulation to form a cross-linked structure mutually interpenetrating with the biochar structure, nano metal oxide has good heat-conducting property, and is fully dispersed and filled in the generated cross-linked structure, and then filled in ethylene propylene rubber, so that the heat conductivity of the ethylene propylene rubber is improved, and the generated cross-linked structure can improve the aging resistance and the mechanical strength of the ethylene propylene diene rubber. Meanwhile, the zinc oxide and the sericite are fully dispersed in the cross-linked structure in the process of mixing and banburying with the biomass ceramic, and the aging resistance of the ethylene propylene diene monomer is improved by the cooperation of the zinc oxide and the sericite with the biomass ceramic. The nano metal compound is a mixture of bismuth trioxide, antimony trioxide and manganese trioxide, the antimony trioxide, the bismuth trioxide and the manganese trioxide are sequentially melted in the heating carbonization process to form a continuous low-melting-point metal oxide molten phase, and then the continuous low-melting-point metal oxide molten phase is distributed in a cross-linking structure of a biochar structure after being cured, so that the heat conduction performance of ethylene propylene diene monomer rubber can be remarkably improved, and the ethylene propylene diene monomer rubber has a synergistic strengthening effect with cross-linked and dispersed zinc oxide and polyacrylonitrile-based carbon fibers, wherein disproportionated rosin, turpentine, C5 petroleum resin and chlorinated fatty acid ester are matched for use to play a plasticizing and toughening role. Meanwhile, the disproportionated rosin, the turpentine oil, the C5 petroleum resin and the chlorinated fatty acid ester have strong high temperature resistance points, a cross-linked net structure is formed in the ethylene propylene diene monomer, the aging resistance of the ethylene propylene diene monomer is improved, the polyacrylonitrile-based carbon fiber has strong heat conductivity on one hand, and the thermal dimensional stability of the ethylene propylene diene monomer is improved by the dispersion of the biomass ceramic and the plasticizer net structure on the other hand.
The preparation method of the high-thermal-conductivity anti-aging ternary polypropylene rubber pipe for the automobile comprises the following steps:
(1) mixing ethylene propylene diene monomer and gasoline according to the mass ratio of 1: 1-1.5, adding a polyolefin thermoplastic elastomer, an anti-aging agent RD and an anti-aging agent MB, and banburying in an internal mixer at 80-90 ℃ for 10-15 min;
(2) then adding the biomass ceramic, the polyacrylonitrile-based carbon fiber, the sericite, the zinc oxide, the titanate coupling agent and the stearic acid in sequence, and continuously banburying for 10-15 min at the temperature of 80-90 ℃;
(3) adding plasticizer, mixing, and extruding in an open mill;
(4) and then feeding the mixture into a vulcanizing machine, adding a vulcanizing agent, and vulcanizing for 20-30 min at the temperature of 160-170 ℃ and under the pressure of 18.2-19 MPa to obtain the high-thermal-conductivity anti-aging ternary polypropylene rubber tube for the automobile.
Preferably, the plasticizer is added in the step (3), then the temperature is raised to 120-130 ℃, the mixture is stirred for 30-60 min to fully volatilize the gasoline, and then the mixture is milled.
The preparation method of the ternary polypropylene rubber tube for the automobile is simple, the raw materials are subjected to banburying twice to fully and uniformly mix the high polymers and the rubber and the auxiliary materials, and the uniformity of the obtained rubber tube is improved. In the open milling process of the ethylene propylene diene monomer, after the plasticizer is added, the temperature is raised to 120-130 ℃, the mixture is stirred and kept for 30-60 min, so that gasoline is fully volatilized, and disproportionated rosin, turpentine, C5 petroleum resin and chlorinated fatty acid ester in the plasticizer form a cross-linked network structure, so that the cross-linked network structure, the biomass ceramic and the polypropylene-grade nitrile-based carbon fiber are cooperatively strengthened, and the aging resistance of the ethylene propylene diene monomer is improved.
The invention has the following beneficial effects:
the ternary acrylic rubber pipe for the automobile has the advantages of high thermal conductivity, good aging resistance, strong mechanical property and simple preparation process, and can meet the use requirement of the automobile on the ternary acrylic rubber pipe.
Detailed Description
The following further describes the embodiments of the present invention.
The starting materials used in the present invention are commercially available or commonly used in the art, unless otherwise specified, and the methods in the following examples are conventional in the art, unless otherwise specified.
Example 1
The high-thermal-conductivity anti-aging polypropylene-diene rubber tube for the automobile is prepared from 80g of ethylene propylene diene rubber, 20g of a polyolefin thermoplastic elastomer, 30g of sericite, 30g of biomass ceramic, 10g of polyacrylonitrile-based carbon fiber, 5g of zinc oxide, 1g of stearic acid, 2g of an anti-aging agent RD, 2g of an anti-aging agent MB, 6g of a plasticizer, 1g of a titanate acid coupling agent and 3g of a vulcanizing agent, wherein:
the biomass ceramic is prepared by the following processes: putting a silane mixture obtained by methyl triethoxysilane and bisphenol A epoxy resin according to the mass ratio of 1:0.2 into ethanol according to the volume ratio of 1:3, uniformly stirring, uniformly mixing 100-mesh bamboo powder and nano metal oxide consisting of nano bismuth trioxide, antimony trioxide and manganese trioxide according to the mass ratio of 1:0.5:1.2, then adding the mixture into the silane mixture/ethanol, stirring for 24 hours, wherein the mass ratio of the bamboo powder, the silane mixture and the nano metal oxide is 1:1.2:1, then putting the mixture into a 30 ℃, ventilating and drying for 5 hours, then crushing and grinding, putting the mixture into a nitrogen environment, calcining for 2 hours at 670 ℃, then heating to 850 ℃, calcining for 2 hours, further heating to 1100 ℃, calcining for 4 hours, cooling, and crushing to 400 meshes.
The plasticizer is a mixture of 10g of disproportionated rosin, 7g of turpentine, 2g of C5 petroleum resin and 2g of chlorinated fatty acid ester.
The preparation method of the high-thermal-conductivity anti-aging ternary polypropylene rubber pipe for the automobile comprises the following steps:
(1) mixing ethylene propylene diene monomer and gasoline according to the mass ratio of 1:1, adding a polyolefin thermoplastic elastomer, an antioxidant RD and an antioxidant MB, and banburying in an internal mixer at 80 ℃ for 10 min;
(2) then adding the biomass ceramic, the polyacrylonitrile-based carbon fiber, the sericite, the zinc oxide, the titanate acid coupling agent and the stearic acid in sequence, and continuously banburying for 10min at the temperature of 80 ℃;
(3) adding plasticizer, mixing, heating to 120 deg.C, stirring for 30min to volatilize gasoline, and extruding in open mill;
(4) and then the mixture is sent into a vulcanizing machine to be vulcanized for 20min by adding a vulcanizing agent, the temperature is 160 ℃, and the pressure is 18.2MPa, so that the high-thermal-conductivity and aging-resistant ternary acrylic rubber pipe for the automobile is obtained.
Example 2
The automobile ternary polypropylene pipe with high heat conductivity and aging resistance is different from the embodiment 1 in that,
the rubber is prepared from 88g of ethylene propylene diene monomer, 24g of polyolefin thermoplastic elastomer, 33g of sericite, 38g of biomass ceramic, 12g of polyacrylonitrile-based carbon fiber, 6g of zinc oxide, 1.5g of stearic acid, 3g of anti-aging agent RD, 3g of anti-aging agent MB, 7g of plasticizer, 2g of titanate acid coupling agent and 3.6g of vulcanizing agent, wherein:
the biomass ceramic is prepared by the following processes: placing a silane mixture obtained by methyl triethoxysilane and bisphenol A epoxy resin according to the mass ratio of 1:0.2 into ethanol according to the volume ratio of 1:3, uniformly stirring, uniformly mixing 100-mesh sawdust with nano metal oxide consisting of nano bismuth trioxide, antimony trioxide and manganese trioxide according to the mass ratio of 1:0.5:1.2, then adding the mixture into the silane mixture/ethanol, stirring for 24 hours, wherein the mass ratio of the sawdust, the silane mixture and the nano metal oxide is 1:1.2:1, then placing the mixture into a 30 ℃, ventilating and drying for 5 hours, then crushing and grinding, then placing the mixture into a nitrogen environment, calcining for 2 hours at 670 ℃, then heating to 850 ℃, calcining for 2 hours, further heating to 1100 ℃, calcining for 4 hours, cooling and crushing to 400 meshes.
Example 3
The high-thermal-conductivity anti-aging polypropylene-diene rubber tube for the automobile is prepared from 90g of ethylene propylene diene rubber, 25g of polyolefin thermoplastic elastomer, 35g of sericite, 40g of biomass ceramic, 15g of polyacrylonitrile-based carbon fiber, 6.5g of zinc oxide, 2g of stearic acid, 3.5g of anti-aging agent RD, 3.5g of anti-aging agent MB, 8g of plasticizer, 3g of titanium ester acid coupling agent and 4g of vulcanizing agent, wherein:
the biomass ceramic is prepared by the following processes: putting a silane mixture obtained by methyl triethoxysilane and bisphenol A epoxy resin according to the mass ratio of 1:0.3 into ethanol according to the volume ratio of 1:4, uniformly stirring, uniformly mixing 150-mesh soybean straw powder with nano metal oxide consisting of nano bismuth trioxide, antimony trioxide and manganese trioxide according to the mass ratio of 1:0.7:1.6, then adding the mixture into the silane mixture/ethanol, stirring for 30 hours, wherein the mass ratio of the soybean straw powder, the silane mixture and the nano metal oxide is 1:1.4:1.5, then putting the mixture into a 33 ℃ air drying environment for 7 hours, crushing and grinding, then putting the mixture into a nitrogen environment for 2.5 hours at 680 ℃, then heating to 870 ℃ for 2.5 hours, further heating to 1200 ℃ for 5 hours, then cooling and crushing to 450 meshes.
The plasticizer is a mixture of 13g of disproportionated rosin, 9g of turpentine, 4g of C5 petroleum resin and 4g of chlorinated fatty acid ester.
The preparation method of the high-thermal-conductivity anti-aging ternary polypropylene rubber pipe for the automobile comprises the following steps:
(1) mixing ethylene propylene diene monomer and gasoline according to the mass ratio of 1:1.3, adding a polyolefin thermoplastic elastomer, an anti-aging agent RD and an anti-aging agent MB, and banburying in an internal mixer at 85 ℃ for 13 min;
(2) then adding the biomass ceramic, the polyacrylonitrile-based carbon fiber, the sericite, the zinc oxide, the titanate acid coupling agent and the stearic acid in sequence, and continuously banburying for 13min at the temperature of 85 ℃;
(3) adding plasticizer, mixing, heating to 125 deg.C, stirring for 50min to volatilize gasoline, and extruding in open mill;
(4) and then the mixture is sent into a vulcanizing machine to be vulcanized for 25min by adding a vulcanizing agent, the temperature is 165 ℃, and the pressure is 18.5MPa, so that the high-thermal-conductivity and aging-resistant ternary acrylic rubber pipe for the automobile is obtained.
Example 4
The high-thermal-conductivity anti-aging polypropylene terpolymer tube for the automobile is prepared from 96g of ethylene propylene terpolymer, 28g of polyolefin thermoplastic elastomer, 37g of sericite, 46g of biomass ceramic, 17g of polyacrylonitrile-based carbon fiber, 7g of zinc oxide, 2.5g of stearic acid, 4g of anti-aging agent RD, 4g of anti-aging agent MB, 9g of plasticizer, 4g of titanate acid coupling agent and 4.8g of vulcanizing agent, wherein:
the biomass ceramic is prepared by the following processes: putting a silane mixture obtained by methyl triethoxysilane and bisphenol A epoxy resin according to the mass ratio of 1:0.4 into ethanol according to the volume ratio of 1:5, uniformly stirring, uniformly mixing 200-mesh cotton straw powder and nano metal oxide consisting of nano bismuth trioxide, antimony trioxide and manganese trioxide according to the mass ratio of 1:1:2, then adding the mixture into the silane mixture/ethanol, stirring for 36 hours, wherein the mass ratio of the cotton straw powder to the silane mixture to the nano metal oxide is 1:1.5:2, then putting the mixture into a 35 ℃ air drying environment for 8 hours, crushing and grinding, then putting the mixture into a nitrogen environment for 3 hours of calcination at 700 ℃, then heating to 880 ℃ for 3 hours of calcination, then continuously heating to 1300 ℃ for 6 hours of calcination, cooling, and crushing to 500 meshes.
The plasticizer is a mixture of 15g of disproportionated rosin, 12g of turpentine, 6g of C5 petroleum resin and 6g of chlorinated fatty acid ester.
The preparation method of the high-thermal-conductivity anti-aging ternary polypropylene rubber pipe for the automobile comprises the following steps:
(1) mixing ethylene propylene diene monomer and gasoline according to the mass ratio of 1:1.5, adding a polyolefin thermoplastic elastomer, an anti-aging agent RD and an anti-aging agent MB, and then banburying in an internal mixer at 90 ℃ for 15 min;
(2) then adding the biomass ceramic, the polyacrylonitrile-based carbon fiber, the sericite, the zinc oxide, the titanate acid coupling agent and the stearic acid in sequence, and continuously banburying for 15min at the temperature of 90 ℃;
(3) adding plasticizer, mixing, heating to 130 deg.C, stirring for 60min to volatilize gasoline, and extruding in open mill;
(4) and then the mixture is sent into a vulcanizing machine to be vulcanized for 30min by adding a vulcanizing agent, the temperature is 170 ℃, and the pressure is 19MPa, so that the high-thermal-conductivity and aging-resistant ternary acrylic rubber pipe for the automobile is obtained.
Example 5
The automobile three-component acrylic rubber pipe with high thermal conductivity and aging resistance is different from the automobile three-component acrylic rubber pipe in the embodiment 4 in that:
the rubber is prepared from 100g of ethylene propylene diene monomer, 30g of polyolefin thermoplastic elastomer, 40g of sericite, 50g of biomass ceramic, 20g of polyacrylonitrile-based carbon fiber, 8g of zinc oxide, 3g of stearic acid, 5g of anti-aging agent RD, 5g of anti-aging agent MB, 10g of plasticizer, 5g of titanium ester acid coupling agent and 5g of vulcanizing agent, wherein:
the biomass ceramic is prepared by the following processes: placing a silane mixture obtained by mixing methyltriethoxysilane and bisphenol A epoxy resin according to the mass ratio of 1:0.4 into ethanol, uniformly stirring, uniformly mixing 200-mesh sawdust with nano metal oxide consisting of nano bismuth trioxide, antimony trioxide and manganese trioxide according to the mass ratio of 1:0.8:1.5, then adding the mixture into the silane mixture/ethanol, stirring for 36h, placing the mixture into a place with a temperature of 33 ℃, ventilating and drying for 5h, grinding, placing the mixture into a nitrogen environment, calcining for 2h at 700 ℃, heating to 880 ℃ for 2h, further heating to 1200 ℃ for 6h, cooling, and crushing to 500 meshes.
Performance testing
Respectively carrying out a heat conductivity coefficient test, an ozone aging test, a tensile strength test and a breaking elongation test on the ternary polypropylene pipes obtained in the embodiments 1-5;
the comparative example was 80g of ethylene propylene diene monomer, 5g of zinc oxide, 1g of stearic acid, 2g of antioxidant RD, 2g of antioxidant MB, 6g of plasticizer and 3g of vulcanizing agent, and the plasticizer was a cycloalkyl rubber plasticizer, according to the method of example 1.
The rubber tube had a tube length of 10cm, a tube diameter of 2cm and a wall thickness of 5mm, and the results are shown in Table 1 below.
TABLE 1 test results
Claims (3)
1. The high-thermal-conductivity anti-aging ternary acrylic rubber pipe for the automobile is characterized by being prepared from the following components in parts by weight: 90 parts of ethylene propylene diene monomer, 25 parts of polyolefin thermoplastic elastomer, 35 parts of sericite, 40 parts of biomass ceramic, 15 parts of polyacrylonitrile-based carbon fiber, 6.5 parts of zinc oxide, 2 parts of stearic acid, 3.5 parts of anti-aging agent RD, 3.5 parts of anti-aging agent MB, 8 parts of plasticizer, 3 parts of titanate acid coupling agent and 4 parts of vulcanizing agent; wherein,
the biomass ceramic is prepared by the following processes: putting a silane mixture obtained by methyl triethoxysilane and bisphenol A epoxy resin according to the mass ratio of 1:0.3 into ethanol, uniformly stirring, uniformly mixing 150-mesh soybean straw powder with nano metal oxide consisting of nano bismuth trioxide, antimony trioxide and manganese trioxide according to the mass ratio of 1:0.7:1.6, adding the mixture into the silane mixture/ethanol, stirring for 30 hours, wherein the mass ratio of the soybean straw powder to the silane mixture to the nano metal oxide is 1:1.4:1.5, putting the mixture into a 33 ℃ air drying system for 7 hours, crushing and grinding, putting the mixture into a nitrogen environment for 2.5 hours at 680 ℃, then heating to 870 ℃ for 2.5 hours, continuing heating to 1200 ℃ for 5 hours, then cooling and crushing to 450 meshes;
the plasticizer is a mixture of 13g of disproportionated rosin, 9g of turpentine, 4g of C5 petroleum resin and 4g of chlorinated fatty acid ester.
2. The method for preparing the ternary polypropylene pipe for the automobile according to claim 1, comprising the following steps:
(1) mixing ethylene propylene diene monomer and gasoline according to the mass ratio of 1: 1-1.5 for swelling, adding polyolefin thermoplastic elastomer, antioxidant RD and antioxidant MB, and banburying in an internal mixer at 80-90 ℃ for 10-15 min; (2) sequentially adding biomass ceramic, polyacrylonitrile-based carbon fiber, sericite, zinc oxide, a titanate acid coupling agent and stearic acid, and continuously banburying for 10-15 min at the temperature of 80-90 ℃; (3) adding plasticizer, mixing, and extruding in an open mill; (4) and (3) feeding the mixture into a vulcanizing machine, adding a vulcanizing agent, and vulcanizing for 20-30 min at the temperature of 160-170 ℃ and under the pressure of 18.2-19 MPa to obtain the high-thermal-conductivity anti-aging ternary polypropylene rubber tube for the automobile.
3. The preparation method according to claim 2, wherein the plasticizer is added in the step (3), then the temperature is raised to 120-130 ℃, the mixture is stirred for 30-60 min to fully volatilize the gasoline, and then the mixture is milled.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1970260A (en) * | 2005-11-24 | 2007-05-30 | 东北林业大学 | Manufacture method of reinforced wood ceramic |
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