CN113831650A - Heat-resistant wear-resistant TPV composition and preparation method thereof - Google Patents

Heat-resistant wear-resistant TPV composition and preparation method thereof Download PDF

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CN113831650A
CN113831650A CN202010586645.3A CN202010586645A CN113831650A CN 113831650 A CN113831650 A CN 113831650A CN 202010586645 A CN202010586645 A CN 202010586645A CN 113831650 A CN113831650 A CN 113831650A
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nylon
composite
heat
particles
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CN113831650B (en
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刘浩
王晓敏
王晶
张新华
刘容德
孙丽朋
王秀丽
苏建华
李长春
高磊
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China Petroleum and Chemical Corp
Qilu Petrochemical Co of Sinopec
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Qilu Petrochemical Co of Sinopec
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    • 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
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/16—Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
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    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
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    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
    • B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
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    • C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
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Abstract

The invention belongs to the technical field of resin synthesis, and particularly relates to a heat-resistant wear-resistant TPV composition and a preparation method thereof. The TPV composition comprises the following raw materials in parts by weight: 40-60 parts of ethylene propylene diene monomer; 1.0-1.5 parts of a crosslinking agent; 10-20 parts of softening oil; 0.1-1 part of antioxidant; 8-15 parts of a composite separant; 30-40 parts of nylon; 10-25 parts of a compatilizer; 1.0-1.5 parts of lubricant. The rubber-modified polypropylene composite material is prepared by a three-step method, and can be prepared by pre-mixing a rubber additive component with a rubber phase, and mixing a nylon additive compatilizer with nylon, so that the phenomenon that the rubber additive enters the nylon phase, the effect of the additive is weakened due to the fact that the nylon additive enters the rubber phase, and side reactions are caused due to the fact that excessive cross-linking agent tetramethyl butane hydrogen peroxide enters the nylon phase is avoided, the uniform mixing and plasticizing can be ensured, and the sufficient cross-linking of EPDM rubber and the fluidity of the TPV composite endowed by the nylon phase can be ensured.

Description

Heat-resistant wear-resistant TPV composition and preparation method thereof
Technical Field
The invention belongs to the technical field of resin synthesis, and particularly relates to a heat-resistant wear-resistant TPV composition and a preparation method thereof.
Background
TPV is a thermoplastic vulcanizate prepared by dynamic vulcanization, which has both the processability of plastics and the elasticity of rubber. Compared with thermosetting rubber, TPV has the advantages of simple processing and forming process, high production efficiency and repeatable processing of leftover materials and reclaimed materials; compared with plastic, TPV has the advantages of good rebound resilience, good low temperature resistance, soft touch and the like. Currently, TPVs are being widely applied to the fields of automobiles, engineering and construction, and medical use, and are developing towards specialized functionalization, such as oil-resistant TPVs, heat-resistant TPVs, aging-resistant TPVs, wear-resistant TPVs, and the like.
CN102585416A discloses a high-temperature-resistant oil-resistant thermoplastic vulcanized rubber, which is composed of the following raw materials in parts by mass: acrylate rubber: 50-70, polyethylene terephthalate: 30-50, vulcanizing agent: 0.75 to 1.05, vulcanization accelerator: 1.13-1.58, anti-aging agent: 1.0 to 1.4, rubber plasticizer: 0-10.5, antioxidant: 0.05 to 0.07, reinforcing agent: 25-35. The thermoplastic vulcanized rubber can be used in high-temperature oil at 200 ℃ for a long time. However, the invention uses 1,3, 5-trimercapto-2, 4, 6-s-triazine as a vulcanizing agent, the vulcanizing agent can quickly vulcanize the acrylate rubber phase at 160-.
CN104371240A discloses a TPE plastic, which comprises the following components in parts by weight: SEBS: 15-25 parts, EPDM: 15-25 parts of elastomer: 5-15 parts, PA 66: 1-10 parts of TPV: 10-20 parts of white oil: 20-35 parts. Although TPE with the hardness value of 65 degrees is obtained, the formula components are free of compatilizers, PA66 is strong-polarity engineering plastic, EPDM and SEBS are non-polar rubber, the two are incompatible, even though TPV contains a small amount of compatilizers, the compatibility is only provided for the TPV, and the requirements of the compatilizers in the formula system of the invention cannot be met.
CN107903626A discloses a high-toughness PA and EPDM blending formula, wherein each 100 parts of PA66 resin is prepared with: 19-23 parts of sulfonated EPDM and 4.5-5.5 parts of ZnSt, and the toughness of PA66 can be remarkably improved. However, the invention does not carry out dynamic vulcanization of EPDM, and the oil resistance and the heat resistance are to be improved.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: overcomes the defects of the prior art, provides a heat-resistant wear-resistant TPV composition and a preparation method thereof, and can improve the processability, heat resistance and wear resistance of TPV.
The heat-resistant wear-resistant TPV composition comprises the following raw materials in parts by mass:
Figure BDA0002554905840000021
preferably, the crosslinking agent is tetramethylbutane hydroperoxide.
Preferably, the softening oil is a naphthenic oil.
The composite separant is prepared from zinc dimethacrylate and transparent light magnesium carbonate [4MgCO ]3·Mg(OH)2]Is compounded by zinc dimethacrylate and 4MgCO3·Mg(OH)2The mass ratio of (A) to (B) is 3-5: 5-10. Preferably, zinc dimethacrylate and 4MgCO3·Mg(OH)2The particle size is 1250 meshes, and the composite isolating agent not only can prevent EPDM rubber particles from adhesion, but also can improve the processability, heat resistance and wear resistance of TPV.
Preferably, the compatilizer is ethylene propylene diene monomer maleic anhydride graft (EPDM-g-MAH).
Preferably, the nylon is nylon 6(PA 6).
Preferably, the lubricant is EBS (ethylene bis stearamide).
The preparation method of the heat-resistant wear-resistant TPV composition comprises the following steps:
(1) mixing ethylene propylene diene monomer with softening oil, a cross-linking agent and an antioxidant, adding a composite isolating agent, and granulating to obtain composite ethylene propylene diene monomer particles A;
(2) mixing nylon, a compatilizer and a lubricant and then granulating to obtain composite nylon particles B;
(3) dynamically vulcanizing the composite ethylene propylene diene monomer particles A and the composite nylon particles B in a double-screw extruder with the length-diameter ratio of 40-60, and then pelletizing to obtain the heat-resistant wear-resistant TPV composition particles.
Wherein, the temperature of the melting homogenization section for dynamic vulcanization of the double-screw extruder in the step (3) is 210-225 ℃, the temperature of the dynamic vulcanization section is 230-250 ℃, and the temperature of the extrusion molding section is 215-220 ℃, so that the TPV has excellent processing performance.
Further, the preparation method of the heat-resistant wear-resistant TPV composition comprises the following steps:
(1) mixing ethylene propylene diene monomer, softening oil, a cross-linking agent and an antioxidant uniformly in an internal mixer, then granulating by adopting a single-screw granulator, and adding a composite isolating agent into conveying air at a granulator head to obtain composite ethylene propylene diene monomer particles A;
(2) mixing nylon, a compatilizer and a lubricant in a low-speed mixer, and then granulating in a double-screw granulator at 230 ℃ to obtain composite nylon particles B;
(3) dynamically vulcanizing the composite ethylene propylene diene monomer particles A and the composite nylon particles B in a double-screw extruder with the length-diameter ratio of 40-60, and then pelletizing to obtain the heat-resistant wear-resistant TPV composition particles.
Compared with the prior art, the invention has the following beneficial effects:
1. the heat-resistant wear-resistant TPV composition particles are prepared by a three-step method, and the rubber additive components and the rubber phase can be pre-mixed, and the nylon additive compatilizer is pre-mixed with the nylon, so that the situation that the rubber additive enters the nylon phase, the effect of the additive is weakened due to the fact that the nylon additive enters the rubber phase, and the side reaction is caused by the fact that excessive cross-linking agent tetramethyl butane hydrogen peroxide enters the nylon phase is avoided. Thus, the uniform mixing and plasticizing can be ensured, and the sufficient crosslinking of the EPDM rubber and the fluidity of the TPV composition endowed by the nylon phase can be ensured.
2. The composite release agent not only can play a role in preventing EPDM rubber particles from adhering, but also can improve the processability, heat resistance and wear resistance of TPV.
3. The cross-linking agent of tetramethylbutane hydrogen peroxide can ensure that the nylon 6/EPDM composition is fully sheared and plasticized uniformly in a melting and homogenizing section of a double-screw extruder, keeps good melt fluidity, and realizes rapid and uniform vulcanization in a dynamic vulcanization section, thereby realizing uniform dispersion of EPDM vulcanized rubber phase particles in a nylon flowing phase and ensuring the processability and mechanical properties of TPV.
Detailed Description
The present invention will be further described with reference to the following examples.
All the raw materials used in the examples are commercially available unless otherwise specified.
Example 1
Firstly, 60 parts of ethylene propylene diene monomer, 10 parts of naphthenic oil, 1.5 parts of tetramethylbutane hydroperoxide and 0.5 part of antioxidant 1010 are mixed uniformly in an internal mixer at normal temperature, then the mixture is granulated by a single screw, and a composite isolating agent (5.0 parts of zinc dimethacrylate with 1250 meshes and 4MgCO with 1250 meshes) is added into conveying air at a granulator head3·Mg(OH)210 parts) to obtain composite ethylene propylene diene monomer particles A. Nylon 6(PA 6): 30 parts, EPDM-g-MAH: 10 parts of lubricant EBS: 1.0 part of the mixture is mixed in a low-speed mixer for 3 minutes and discharged, and the mixed material is granulated in a double screw at 230 ℃ to obtain the composite nylon particles B. And finally, dynamically vulcanizing the composite ethylene propylene diene monomer particles A and the composite nylon particles B in a double-screw extruder with the length-diameter ratio of 50, and then granulating to obtain the heat-resistant wear-resistant TPV composition particles. The temperature of the melting homogenization section of the dynamic vulcanization of the double-screw extruder is 210-225 ℃, the temperature of the dynamic vulcanization section is 230-250 ℃, and the temperature of the extrusion molding section is as follows: 215 ℃ and 220 ℃.
Example 2
Firstly, 40 parts of ethylene propylene diene monomer, 20 parts of naphthenic oil, 1.0 part of tetramethylbutane hydroperoxide and 0.5 part of antioxidant 1010 are mixed uniformly in an internal mixer at normal temperature, then the mixture is granulated by a single screw, and a composite isolating agent (3.0 parts of zinc dimethacrylate with 1250 meshes and 4MgCO with 1250 meshes) is added into conveying air at a granulator head3·Mg(OH)25.0 parts) to obtain composite ethylene propylene diene monomer particles A. Nylon 6(PA 6): 40 parts, EPDM-g-MAH: 25 parts of lubricant EBS: 1.5 parts of the mixture is mixed in a low-speed mixer for 3 minutes and discharged, and the mixed material is granulated in a double screw at 230 ℃ to obtain the composite nylon particles B. Finally, dynamically vulcanizing the composite ethylene propylene diene monomer particles A and the composite nylon particles B in a double-screw extruder with the length-diameter ratio of 50And then cutting into granules to obtain the heat-resistant and wear-resistant TPV composition granules. The temperature of the melting homogenization section of the dynamic vulcanization of the double-screw extruder is 210-225 ℃, the temperature of the dynamic vulcanization section is 230-250 ℃, and the temperature of the extrusion molding section is as follows: 215 ℃ and 220 ℃.
Example 3
Firstly, 50 parts of ethylene propylene diene monomer, 15 parts of naphthenic oil, 1.2 parts of tetramethylbutane hydroperoxide and 0.5 part of antioxidant 1010 are mixed uniformly in an internal mixer at normal temperature, then the mixture is granulated by a single screw, and a composite isolating agent (4.0 parts of zinc dimethacrylate with 1250 meshes and 4MgCO with 1250 meshes) is added into conveying air at a granulator head3·Mg(OH)28.0 parts) to obtain composite ethylene propylene diene monomer particles A. Nylon 6(PA 6): 35 parts, EPDM-g-MAH: 18 parts of lubricant EBS: 1.3 parts of the mixture is mixed in a low-speed mixer for 3 minutes and discharged, and the mixed material is granulated in a double screw at 230 ℃ to obtain the composite nylon particles B. And finally, dynamically vulcanizing the composite ethylene propylene diene monomer particles A and the composite nylon particles B in a double-screw extruder with the length-diameter ratio of 50, and then granulating to obtain the heat-resistant wear-resistant TPV composition particles. The temperature of the melting homogenization section of the dynamic vulcanization of the double-screw extruder is 210-225 ℃, the temperature of the dynamic vulcanization section is 230-250 ℃, and the temperature of the extrusion molding section is as follows: 215 ℃ and 220 ℃.
Example 4
Firstly, 50 parts of ethylene propylene diene monomer, 15 parts of naphthenic oil, 1.2 parts of tetramethylbutane hydroperoxide and 0.5 part of antioxidant 1010 are mixed uniformly in an internal mixer at normal temperature, then the mixture is granulated by a single screw, and a composite isolating agent (4.0 parts of zinc dimethacrylate with 1250 meshes and 4MgCO with 1250 meshes) is added into conveying air at a granulator head3·Mg(OH)28.0 parts) to obtain composite ethylene propylene diene monomer particles A. Nylon 6(PA 6): 35 parts, EPDM-g-MAH: 18 parts of lubricant EBS: 1.3 parts of the mixture is mixed in a low-speed mixer for 3 minutes and discharged, and the mixed material is granulated in a double screw at 230 ℃ to obtain the composite nylon particles B. And finally, dynamically vulcanizing the composite ethylene propylene diene monomer particles A and the composite nylon particles B in a double-screw extruder with the length-diameter ratio of 60, and then pelletizing to obtain the heat-resistant wear-resistant TPV composition particles. The temperature of the melting homogenization section of the dynamic vulcanization of the double-screw extruder is 210-225 ℃, and the temperature of the dynamic vulcanization section isThe temperature is 230 ℃ and 250 ℃, and the temperature of the extrusion molding section is as follows: 215 ℃ and 220 ℃.
Comparative example 1
Firstly, 70 parts of ethylene propylene diene monomer, 30 parts of naphthenic oil, 1.5 parts of tetramethylbutane hydroperoxide and 0.5 part of antioxidant 1010 are mixed uniformly in an internal mixer at normal temperature, then the mixture is granulated by a single screw, and a composite isolating agent (4.0 parts of zinc dimethacrylate with 1250 meshes and 4MgCO with 1250 meshes) is added into conveying air at a granulator head3·Mg(OH)28.0 parts) to obtain composite ethylene propylene diene monomer particles A. Nylon 6(PA 6): 20 parts, EPDM-g-MAH: 25 parts of lubricant EBS: 1.5 parts of the mixture is mixed in a low-speed mixer for 3 minutes and discharged, and the mixed material is granulated in a double screw at 230 ℃ to obtain the composite nylon particles B. And finally, dynamically vulcanizing the composite ethylene propylene diene monomer particles A and the composite nylon particles B in a double-screw extruder with the length-diameter ratio of 50, and then granulating to obtain the heat-resistant wear-resistant TPV composition particles. The temperature of the melting homogenization section of the dynamic vulcanization of the double-screw extruder is 210-225 ℃, the temperature of the dynamic vulcanization section is 230-250 ℃, and the temperature of the extrusion molding section is as follows: 215 ℃ and 220 ℃.
Comparative example 2
Firstly, 50 parts of ethylene propylene diene monomer, 15 parts of naphthenic oil, 1.2 parts of tert-butyl hydroperoxide and 0.5 part of antioxidant 1010 are mixed uniformly in an internal mixer at normal temperature, then the mixture is granulated by a single screw, and a composite isolating agent (4.0 parts of zinc dimethacrylate with 1250 meshes and 4MgCO with 1250 meshes) is added into conveying air at a granulator head3·Mg(OH)28.0 parts) to obtain composite ethylene propylene diene monomer particles A. Nylon 6(PA 6): 35 parts, EPDM-g-MAH: 18 parts of lubricant EBS: 1.3 parts of the mixture is mixed in a low-speed mixer for 3 minutes and discharged, and the mixed material is granulated in a double screw at 230 ℃ to obtain the composite nylon particles B. And finally, dynamically vulcanizing the composite ethylene propylene diene monomer particles A and the composite nylon particles B in a double-screw extruder with the length-diameter ratio of 50, and then granulating to obtain the heat-resistant wear-resistant TPV composition particles. The temperature of the melting homogenization section of the dynamic vulcanization of the double-screw extruder is 210-225 ℃, the temperature of the dynamic vulcanization section is 230-250 ℃, and the temperature of the extrusion molding section is as follows: 215 ℃ and 220 ℃.
Comparative example 3
Firstly, 50 parts of ethylene propylene diene monomer, 15 parts of naphthenic oil, 1.2 parts of tetramethylbutane hydroperoxide and 0.5 part of antioxidant 1010 are mixed uniformly in an internal mixer at normal temperature, and then single-screw granulation is carried out, thus obtaining the composite ethylene propylene diene monomer particles A. Nylon 6(PA 6): 35 parts, EPDM-g-MAH: 18 parts of lubricant EBS: 1.3 parts of the mixture is mixed in a low-speed mixer for 3 minutes and discharged, and the mixed material is granulated in a double screw at 230 ℃ to obtain the composite nylon particles B. And finally, dynamically vulcanizing the composite ethylene propylene diene monomer particles A and the composite nylon particles B in a double-screw extruder with the length-diameter ratio of 50, and then granulating to obtain the heat-resistant wear-resistant TPV composition particles. The temperature of the melting homogenization section of the dynamic vulcanization of the double-screw extruder is 210-225 ℃, the temperature of the dynamic vulcanization section is 230-250 ℃, and the temperature of the extrusion molding section is as follows: 215 ℃ and 220 ℃.
Comparative example 4
Firstly, 50 parts of ethylene propylene diene monomer, 15 parts of naphthenic oil, 1.2 parts of tetramethylbutane hydroperoxide and 0.5 part of antioxidant 1010 are mixed uniformly in an internal mixer at normal temperature, then single-screw granulation is carried out, and 8-15 parts of talcum powder serving as a separant is added into conveying air at a granulator head, so as to obtain the composite ethylene propylene diene monomer particles A. Nylon 6(PA 6): 35 parts, EPDM-g-MAH: 18 parts of lubricant EBS: 1.3 parts of the mixture is mixed in a low-speed mixer for 3 minutes and discharged, and the mixed material is granulated in a double screw at 230 ℃ to obtain the composite nylon particles B. And finally, dynamically vulcanizing the composite ethylene propylene diene monomer particles A and the composite nylon particles B in a double-screw extruder with the length-diameter ratio of 60, and then pelletizing to obtain the heat-resistant wear-resistant TPV composition particles. The temperature of the melting homogenization section of the dynamic vulcanization of the double-screw extruder is 210-225 ℃, the temperature of the dynamic vulcanization section is 230-250 ℃, and the temperature of the extrusion molding section is as follows: 215 ℃ and 220 ℃.
Comparative example 5
Firstly, 50 parts of ethylene propylene diene monomer, 15 parts of naphthenic oil, 1.2 parts of tetramethylbutane hydroperoxide and 0.5 part of antioxidant 1010 are mixed uniformly in an internal mixer at normal temperature, then the mixture is granulated by a single screw, and a composite isolating agent (4.0 parts of zinc dimethacrylate with 1250 meshes and 4MgCO with 1250 meshes) is added into conveying air at a granulator head3·Mg(OH)28.0 parts) to obtain composite ethylene propylene diene monomer particles A. Then NiDragon 6(PA 6): 35 parts, EPDM-g-MAH: 18 parts of lubricant EBS: 1.3 parts of the mixture is mixed in a low-speed mixer for 3 minutes and discharged, and the mixed material is granulated in a double screw at 230 ℃ to obtain the composite nylon particles B. And finally, dynamically vulcanizing the composite ethylene propylene diene monomer particles A and the composite nylon particles B in a double-screw extruder with the length-diameter ratio of 30, and then granulating to obtain the heat-resistant wear-resistant TPV composition particles. The temperature of the melting homogenization section of the dynamic vulcanization of the double-screw extruder is 210-225 ℃, the temperature of the dynamic vulcanization section is 230-250 ℃, and the temperature of the extrusion molding section is as follows: 215 ℃ and 220 ℃.
Comparative example 6
50 parts of ethylene propylene diene monomer, 15 parts of naphthenic oil, 1.2 parts of tetramethylbutane hydroperoxide, 0.5 part of antioxidant, 4.0 parts of 10101250-mesh zinc dimethacrylate and 1250-mesh 4MgCO3·Mg(OH)28.0 parts, 35 parts of nylon 6(PA6), 35 parts of EPDM-g-MAH18 parts and 1.3 parts of lubricant EBS are mixed uniformly in an internal mixer at normal temperature, then single-screw granulation is carried out, and the granules are dynamically vulcanized in a double-screw extruder with the length-diameter ratio of 50 and then granulated to obtain the heat-resistant and wear-resistant TPV composition granules. The temperature of the melting homogenization section of the dynamic vulcanization of the double-screw extruder is 210-225 ℃, the temperature of the dynamic vulcanization section is 230-250 ℃, and the temperature of the extrusion molding section is as follows: 215 ℃ and 220 ℃.
TPV pellets obtained in examples 1 to 4 and comparative examples 1 to 6 were pressed at 240 ℃ into 2mm sheets to prepare sample sheets. The heat resistance of the TPV was tested according to GB/T3512-. The abrasion resistance of TPV was tested according to GB/T1689-. The test results of the heat and abrasion resistant TPV compositions examples 1-4 and comparative examples 1-6 are shown in Table 1.
TABLE 1 results of comparison of the Heat and abrasion resistance tests of examples 1 to 4 and comparative examples 1 to 6
Figure BDA0002554905840000061
As can be seen from Table 1, the TPV compositions prepared in examples 1-4 have good heat resistance and abrasion resistance as compared with those of comparative examples 1-6. Crosslinking agent IVThe methylbutane hydroperoxide is suitable for dynamic vulcanization processing of PA6/EPDM system, and can endow the composition with good heat resistance and wear resistance. Composite separant zinc dimethacrylate and 4MgCO3·Mg(OH)2The heat resistance and the wear resistance of the composition can be obviously improved. The large length-diameter ratio double screw with the length-diameter ratio of 40-60 is beneficial to the dynamic vulcanization processing of the composition, and the prepared TPV material has good heat resistance and wear resistance. The three-stage processing technology of the composition of the PA6/EPDM system can obtain the TPV material with good heat resistance and wear resistance.
Of course, the foregoing is only a preferred embodiment of the invention and should not be taken as limiting the scope of the embodiments of the invention. The present invention is not limited to the above examples, and equivalent changes and modifications made by those skilled in the art within the spirit and scope of the present invention should be construed as being included in the scope of the present invention.

Claims (10)

1. A heat and abrasion resistant TPV composition characterized by: the composite material comprises the following raw materials in parts by weight:
Figure FDA0002554905830000011
2. the heat and abrasion resistant TPV composition of claim 1, wherein: the cross-linking agent is tetramethyl butane hydrogen peroxide.
3. The heat and abrasion resistant TPV composition of claim 1, wherein: the softening oil is naphthenic oil.
4. The heat and abrasion resistant TPV composition of claim 1, wherein: the composite separant is prepared from zinc dimethacrylate and 4MgCO3·Mg(OH)2Is compounded by zinc dimethacrylate and 4MgCO3·Mg(OH)2The mass ratio of (A) to (B) is 3-5: 5-10.
5. The heat and abrasion resistant TPV composition of claim 1, wherein: the compatilizer is an ethylene propylene diene monomer maleic anhydride graft.
6. The heat and abrasion resistant TPV composition of claim 1, wherein: the nylon is nylon 6.
7. The heat and abrasion resistant TPV composition of claim 1, wherein: the lubricant is EBS.
8. A method of making a heat and abrasion resistant TPV composition as claimed in claims 1 to 7, wherein: the method comprises the following steps:
(1) mixing ethylene propylene diene monomer with softening oil, a cross-linking agent and an antioxidant, adding a composite isolating agent, and granulating to obtain composite ethylene propylene diene monomer particles A;
(2) mixing nylon, a compatilizer and a lubricant and then granulating to obtain composite nylon particles B;
(3) dynamically vulcanizing the composite ethylene propylene diene monomer particles A and the composite nylon particles B in a double-screw extruder with the length-diameter ratio of 40-60, and then pelletizing to obtain the heat-resistant wear-resistant TPV composition particles.
9. The method of making a heat and abrasion resistant TPV composition of claim 8, wherein: in the step (3), the temperature of the melting homogenization section for dynamic vulcanization of the double-screw extruder is 210-225 ℃, the temperature of the dynamic vulcanization section is 230-250 ℃, and the temperature of the extrusion molding section is 215-220 ℃.
10. The method of making a heat and abrasion resistant TPV composition of claim 8, wherein: the method comprises the following steps:
(1) mixing ethylene propylene diene monomer, softening oil, a cross-linking agent and an antioxidant uniformly in an internal mixer, then granulating by adopting a single-screw granulator, and adding a composite isolating agent into conveying air at a granulator head to obtain composite ethylene propylene diene monomer particles A;
(2) mixing nylon, a compatilizer and a lubricant in a low-speed mixer, and then granulating in a double-screw granulator at 230 ℃ to obtain composite nylon particles B;
(3) dynamically vulcanizing the composite ethylene propylene diene monomer particles A and the composite nylon particles B in a double-screw extruder with the length-diameter ratio of 40-60, and then pelletizing to obtain the heat-resistant wear-resistant TPV composition particles.
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102827329A (en) * 2012-09-20 2012-12-19 山东瑞丰高分子材料股份有限公司 High-tensile-strength impact modifier for PVC (polyvinyl chloride) and preparation technique thereof
CN105623112A (en) * 2016-03-17 2016-06-01 苏州科茂电子材料科技有限公司 Wear-resistant and aging-resistant cable sheath material
CN110437548A (en) * 2019-09-04 2019-11-12 浙江保尔力胶带有限公司 High-low temperature resistant ethylene propylene diene rubber V band and preparation method thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102827329A (en) * 2012-09-20 2012-12-19 山东瑞丰高分子材料股份有限公司 High-tensile-strength impact modifier for PVC (polyvinyl chloride) and preparation technique thereof
CN105623112A (en) * 2016-03-17 2016-06-01 苏州科茂电子材料科技有限公司 Wear-resistant and aging-resistant cable sheath material
CN110437548A (en) * 2019-09-04 2019-11-12 浙江保尔力胶带有限公司 High-low temperature resistant ethylene propylene diene rubber V band and preparation method thereof

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