CN115505211A - Modified polypropylene-based insulating material, preparation method thereof and modified polypropylene - Google Patents
Modified polypropylene-based insulating material, preparation method thereof and modified polypropylene Download PDFInfo
- Publication number
- CN115505211A CN115505211A CN202211397763.5A CN202211397763A CN115505211A CN 115505211 A CN115505211 A CN 115505211A CN 202211397763 A CN202211397763 A CN 202211397763A CN 115505211 A CN115505211 A CN 115505211A
- Authority
- CN
- China
- Prior art keywords
- modified polypropylene
- polypropylene
- component
- zone temperature
- antioxidant
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- -1 polypropylene Polymers 0.000 title claims abstract description 175
- 239000004743 Polypropylene Substances 0.000 title claims abstract description 172
- 229920001155 polypropylene Polymers 0.000 title claims abstract description 172
- 239000011810 insulating material Substances 0.000 title claims abstract description 39
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- 238000002156 mixing Methods 0.000 claims abstract description 43
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 claims abstract description 37
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 35
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 35
- 238000001816 cooling Methods 0.000 claims abstract description 15
- 150000001451 organic peroxides Chemical class 0.000 claims abstract description 13
- 238000001035 drying Methods 0.000 claims abstract description 9
- 239000002994 raw material Substances 0.000 claims abstract description 9
- DMWVYCCGCQPJEA-UHFFFAOYSA-N 2,5-bis(tert-butylperoxy)-2,5-dimethylhexane Chemical compound CC(C)(C)OOC(C)(C)CCC(C)(C)OOC(C)(C)C DMWVYCCGCQPJEA-UHFFFAOYSA-N 0.000 claims abstract description 3
- 238000002844 melting Methods 0.000 claims description 16
- 230000008018 melting Effects 0.000 claims description 16
- 238000001125 extrusion Methods 0.000 claims description 13
- 239000000155 melt Substances 0.000 claims description 13
- 229920002725 thermoplastic elastomer Polymers 0.000 claims description 13
- 229920006124 polyolefin elastomer Polymers 0.000 claims description 11
- 239000012774 insulation material Substances 0.000 claims description 10
- 238000009826 distribution Methods 0.000 claims description 9
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical class C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- 229920003048 styrene butadiene rubber Polymers 0.000 claims description 7
- 238000009413 insulation Methods 0.000 claims description 6
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 claims description 4
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 4
- 150000001732 carboxylic acid derivatives Chemical class 0.000 claims description 3
- IMSODMZESSGVBE-UHFFFAOYSA-N 2-Oxazoline Chemical compound C1CN=CO1 IMSODMZESSGVBE-UHFFFAOYSA-N 0.000 claims description 2
- JKIJEFPNVSHHEI-UHFFFAOYSA-N Phenol, 2,4-bis(1,1-dimethylethyl)-, phosphite (3:1) Chemical compound CC(C)(C)C1=CC(C(C)(C)C)=CC=C1OP(OC=1C(=CC(=CC=1)C(C)(C)C)C(C)(C)C)OC1=CC=C(C(C)(C)C)C=C1C(C)(C)C JKIJEFPNVSHHEI-UHFFFAOYSA-N 0.000 claims description 2
- 239000000203 mixture Substances 0.000 description 44
- 239000007788 liquid Substances 0.000 description 24
- 239000002245 particle Substances 0.000 description 18
- 239000012535 impurity Substances 0.000 description 12
- 230000000052 comparative effect Effects 0.000 description 10
- 238000001914 filtration Methods 0.000 description 7
- 238000012360 testing method Methods 0.000 description 7
- 238000005507 spraying Methods 0.000 description 6
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 5
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 229920001169 thermoplastic Polymers 0.000 description 3
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 229920003020 cross-linked polyethylene Polymers 0.000 description 2
- 239000004703 cross-linked polyethylene Substances 0.000 description 2
- 238000005227 gel permeation chromatography Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920000098 polyolefin Polymers 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000004416 thermosoftening plastic Substances 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- 125000003504 2-oxazolinyl group Chemical group O1C(=NCC1)* 0.000 description 1
- 240000005979 Hordeum vulgare Species 0.000 description 1
- 235000007340 Hordeum vulgare Nutrition 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000007429 general method Methods 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000002715 modification method Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- 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
- 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
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
- H01B3/441—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from alkenes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
- C08L2203/202—Applications use in electrical or conductive gadgets use in electrical wires or wirecoating
Abstract
The inventionProvides a modified polypropylene-based insulating material, a preparation method thereof and modified polypropylene. The modified polypropylene-based insulating material comprises, by mass, 50-90wt% of modified polypropylene, 8-49wt% of a first component, 0.05-2wt% of a second component and 0.1-1wt% of an antioxidant. The preparation method of the modified polypropylene-based insulating material comprises the following steps: mixing the modified polypropylene, the first component, the second component and the antioxidant, and then extruding and granulating; dehydrating, drying, and cooling 。 The raw materials for forming the modified polypropylene comprise polypropylene and organic peroxide; the organic peroxide includes at least one of 3,6, 9-triethyl-3, 6, 9-trimethyl-1, 4, 7-triperoxonane, 2, 5-dimethyl-2, 5-di (t-butylperoxy) hexane, and dicumyl peroxide. The insulating material prepared by the invention has excellent low temperature brittleness resistance and processability.
Description
Technical Field
The invention relates to the technical field of polypropylene modification, in particular to a modified polypropylene-based insulating material, a preparation method thereof and modified polypropylene.
Background
The power cable is generally laid under the ground surface, and is less influenced by the weather, safe, reliable, hidden and durable because the power cable is laid under the ground surface compared with an overhead line. The electric power cable usually adopts the electric wire wrapped by the polyolefin solid extrusion insulating material as the transmission line, because the polyolefin solid extrusion insulating cable has the advantages of small volume, light weight, high working temperature, low maintenance cost and environmental protection, and has more advantages in production, transportation, installation, recovery and other aspects compared with other insulating material cables.
The conventional power cable insulation material is mainly a crosslinked polyethylene insulation material, but the crosslinked polyethylene insulation material is a thermosetting material and generally cannot be recycled, so that the recyclable thermoplastic polypropylene is tried to be used as the power cable insulation material. However, the existing polypropylene insulating material has poor low temperature brittleness resistance, and the use of the polypropylene insulating material is greatly limited.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to overcome the defects that the polypropylene insulating material in the prior art has poor low-temperature brittleness resistance and the use of the polypropylene insulating material is greatly limited.
Therefore, the invention provides a modified polypropylene-based insulating material, a preparation method thereof and modified polypropylene.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
the modified polypropylene-based insulating material comprises, by mass, 50-90wt% of modified polypropylene, 8-49wt% of a first component, 0.05-2wt% of a second component and 0.1-1wt% of an antioxidant;
the modified polypropylene is organic peroxide modified polypropylene; the first component is a thermoplastic elastomer; the second component includes at least one of maleic anhydride, an acrylic compound, a fatty carboxylic acid, and an oxazoline.
Further, the acrylic compound is preferably acrylic acid.
Further, the molecular weight distribution of the modified polypropylene is 6-10, the weight-average molecular weight is 180000-250000g/mol, and the number-average molecular weight is 20000-40000g/mol;
and/or the melt index of the modified polypropylene is 0.5-5g/10min;
and/or the ash content of the modified polypropylene is less than 100 ppm.
Further, the melt index of the modified polypropylene is 1-3g/10min.
Further, the thermoplastic elastomer includes at least one of a hydrogenated styrene-butadiene block copolymer, a polyolefin elastomer, a thermoplastic elastomer TPR, and a thermoplastic rubber.
Further, the hydrogenated styrene-butadiene block copolymer has a melting point of 140 to 160 ℃ and a tensile strength of 5 to 10MPa;
and/or the melting point of the polyolefin elastomer is 60-80 ℃, and the tensile strength is 8-12MPa.
Further, the hydrogenated styrene-butadiene block copolymer has a melting point of 160 ℃ and a tensile strength of 8MPa;
and/or the tensile strength of the polyolefin elastomer is 10-11MPa.
Further, the antioxidant comprises at least one of antioxidant 300, antioxidant 1010 and antioxidant 168.
The invention also provides a preparation method of the modified polypropylene-based insulating material, which is characterized by comprising the following steps of:
mixing the modified polypropylene, the first component, the second component and the antioxidant, and then extruding and granulating;
dewatering, drying and cooling 。
Further, the extrusion temperature after mixing is 170-205 ℃;
and/or, mixing by using a low-speed mixer during mixing, wherein the mixing speed is 100-150rpm.
Further, the first zone temperature of the extruder was controlled to 140 ℃, the second zone temperature to 150 ℃, the third zone temperature to 160 ℃, the fourth zone temperature to 170 ℃, the fifth zone temperature to 180 ℃, the sixth zone temperature to 190 ℃, the seventh zone temperature to 200 ℃, the eighth zone temperature to 200 ℃, the ninth zone temperature to 200 ℃ and the extrusion temperature to 200 ℃ during extrusion granulation after mixing.
Further, mixing was carried out using a low mixer at a mixing speed of 150rpm.
The invention also provides modified polypropylene in the modified polypropylene-based insulating material, wherein the raw materials for forming the modified polypropylene comprise polypropylene and organic peroxide;
the organic peroxide includes at least one of 3,6, 9-triethyl-3, 6, 9-trimethyl-1, 4, 7-triperoxonane, 2, 5-dimethyl-2, 5-di (t-butylperoxy) hexane, and dicumyl peroxide.
Further, the mass ratio of the polypropylene to the organic peroxide is 100 (0.1-0.5).
The invention also provides a modification method of the modified polypropylene, which comprises the following steps: atomizing the organic peroxide, uniformly mixing with polypropylene, and extruding.
Further, the organic peroxide is atomized and then uniformly mixed with polypropylene, and the temperature of the first zone of the extruder is controlled to be 140 ℃, the temperature of the second zone is controlled to be 150 ℃, the temperature of the third zone is controlled to be 160 ℃, the temperature of the fourth zone is controlled to be 170 ℃, the temperature of the fifth zone is controlled to be 180 ℃, the temperature of the sixth zone is controlled to be 190 ℃, the temperature of the seventh zone is controlled to be 200 ℃, the temperature of the eighth zone is controlled to be 200 ℃, the temperature of the ninth zone is controlled to be 200 ℃ and the extrusion temperature is controlled to be 200 ℃.
The invention also provides a power cable prepared from the modified polypropylene-based insulating material.
The technical scheme of the invention has the following advantages:
1. the modified polypropylene-based insulating material provided by the invention takes 50-90wt% of modified polypropylene as a matrix, and the first component, the second component and the antioxidant are added, so that the low-temperature brittleness resistance and the processability of the insulating material are improved, the insulating material can have good impact toughness at the temperature of-40 ℃, and the melt index at the temperature of 190 ℃ is 0.5-2.2g/10min.
2. The modified polypropylene provided by the invention has wider molecular weight distribution, can relieve the low-temperature brittleness of the insulating material and improve the processability of the insulating material.
Detailed Description
The following examples are provided to further understand the present invention, not to limit the scope of the present invention, but to provide the best mode, not to limit the content and the protection scope of the present invention, and any product similar or similar to the present invention, which is obtained by combining the present invention with other prior art features, falls within the protection scope of the present invention.
The examples do not show the specific experimental steps or conditions, and can be performed according to the conventional experimental steps described in the literature in the field. The reagents or instruments used are not indicated by manufacturers, and are all conventional reagent products which can be obtained commercially.
The hydrogenated styrene-butadiene block copolymer was branded as ba ling petrochemical, designation YH503T; purchased from lawrenvius plastication ltd, suzhou;
the polyolefin elastomer of example 2 was made under the brand name of exxon and under the brand name of 2120; purchased from Kawan engineering plastics materials Co., ltd, dongguan;
the polyolefin elastomer of example 5 was made by Exxon under the designation 6202; purchased from highland barley trade company Limited;
the polyolefin elastomer of example 6 was made Exxon, and was numbered 3202; purchased from suzhou chunlin light plastication ltd;
the thermoplastic rubber is Koteng with the brand number of D1155; purchased from overseas electric nationality trade company, shanghai;
the brand of the thermoplastic elastomer TPR is Exxon Shandu ping, and the brand number is 191-55PA; available from Dongguan, polylon plastics materials Co Ltd
The grade of the polypropylene is k830; from Yanshan petrochemical 。
Example 1
The embodiment provides a modified polypropylene-based insulating material, which comprises, by mass, 50wt% of modified polypropylene, 49wt% of a first component, 0.9wt% of a second component, and 0.1wt% of an antioxidant;
the first component in this example is a hydrogenated styrene-butadiene block copolymer having a melting point of 160 ℃ and a tensile strength of 8MPa; the second component is maleic anhydride; the antioxidant is antioxidant 1010;
the embodiment also provides a preparation method of the modified polypropylene-based insulating material, which comprises the following steps:
mixing the modified polypropylene, the first component, the second component and the antioxidant by using a low mixer at 30 ℃ to obtain a mixture, wherein the rotating speed of the low mixer is controlled to be 150rpm during mixing, and the mixing environment is controlled to be ten thousand (controlling the mixing environment to be ten thousand means controlling the amount of 0.5 mu m of micro-dust in the mixing environment to be within 10000 per cubic meter during mixing); extruding and granulating the mixture on a double-screw extruder to obtain insulating particles, wherein the first zone temperature of the extruder is controlled to be 140 ℃, the second zone temperature is controlled to be 150 ℃, the third zone temperature is controlled to be 160 ℃, the fourth zone temperature is controlled to be 170 ℃, the fifth zone temperature is controlled to be 180 ℃, the sixth zone temperature is controlled to be 190 ℃, the seventh zone temperature is controlled to be 200 ℃, the eighth zone temperature is controlled to be 200 ℃, the ninth zone temperature is controlled to be 200 ℃, the extruding temperature of the insulating particles is controlled to be 200 ℃ and the rotating speed of the extruder is controlled to be 200r/min; filtering impurities in the mixture in an extruder through a 500-mesh filter screen, and extruding the mixture through a die head;
dewatering, drying and cooling the insulating particles by an air cooling system 。
The present embodiment also provides the above modified polypropylene, wherein the raw materials for forming the modified polypropylene include polypropylene and dicumyl peroxide, and a mass ratio of the polypropylene to the dicumyl peroxide is 100; the preparation method of the modified polypropylene comprises the following steps:
melting dicumyl peroxide into liquid at 70 ℃, atomizing the dicumyl peroxide liquid by using a high-speed mixer, spraying the liquid onto the surface of polypropylene, uniformly mixing the liquid with the polypropylene to obtain a mixture, extruding and granulating the mixture on a double-screw extruder to obtain modified polypropylene, and controlling the first-zone temperature of the extruder to be 140 ℃, the second-zone temperature to be 150 ℃, the third-zone temperature to be 160 ℃, the fourth-zone temperature to be 170 ℃, the fifth-zone temperature to be 180 ℃, the sixth-zone temperature to be 190 ℃, the seventh-zone temperature to be 200 ℃, the eighth-zone temperature to be 200 ℃, the ninth-zone temperature to be 200 ℃, the temperature of the modified polypropylene to be 200 ℃ and the rotating speed of the extruder to be 200r/min during extrusion; filtering impurities in the mixture in an extruder through a 500-mesh filter screen, and extruding the mixture through a die head;
the melt index of the modified polypropylene prepared in this example was measured according to GB/T3682-2000 "determination of melt mass flow rate and melt volume flow rate of thermoplastic plastics"; determination of plastics-ash according to ISO3451-1 2019 part 1: general methods the ash content of the modified polypropylene prepared in this example was tested; the weight average and number average molecular weights of the modified polypropylene prepared in this example were measured by GPC gel permeation chromatography;
in this example, the modified polypropylene was isotactic modified polypropylene ， The molecular weight distribution is 6 according to the test; the weight average molecular weight is 180000; the number average molecular weight is 30000; the melt index is 2g/10min; the ash content was 80ppm.
Example 2
The embodiment provides a modified polypropylene-based insulating material, which comprises, by mass, 60wt% of modified polypropylene, 39.45wt% of a first component, 0.05wt% of a second component, and 0.5wt% of an antioxidant;
the first component in this example was a mixture of a polyolefin elastomer and a thermoplastic rubber (mixed mass ratio 1; the second component is acrylic acid; the antioxidant is antioxidant 1010;
the present invention also provides a method for preparing the modified polypropylene-based insulating material, comprising the following steps:
mixing the modified polypropylene, the first component, the second component and the antioxidant by adopting a low mixer at 30 ℃ to obtain a mixture, controlling the rotating speed of the low mixer to be 150rpm during mixing, and controlling the mixing environment to be ten thousand grades; extruding and granulating the mixture on a double-screw extruder to obtain insulating particles, wherein the first zone temperature of the extruder is controlled to be 140 ℃, the second zone temperature is controlled to be 150 ℃, the third zone temperature is controlled to be 160 ℃, the fourth zone temperature is controlled to be 170 ℃, the fifth zone temperature is controlled to be 180 ℃, the sixth zone temperature is controlled to be 190 ℃, the seventh zone temperature is controlled to be 200 ℃, the eighth zone temperature is controlled to be 200 ℃, the ninth zone temperature is controlled to be 200 ℃, the extruding temperature of the insulating particles is controlled to be 200 ℃ and the rotating speed of the extruder is controlled to be 200r/min; filtering impurities in the mixture in an extruder through a 500-mesh filter screen, and extruding the mixture through a die head;
dewatering, drying and cooling the insulating particles by an air cooling system 。
The present embodiment also provides the above modified polypropylene, wherein the raw materials for forming the modified polypropylene include polypropylene and dicumyl peroxide, and the mass ratio of polypropylene to dicumyl peroxide is 100; the preparation method of the modified polypropylene comprises the following steps:
melting dicumyl peroxide into liquid at 70 ℃, atomizing the dicumyl peroxide liquid by using a high-speed mixer, spraying the atomized dicumyl peroxide liquid on the surface of polypropylene, uniformly mixing the atomized dicumyl peroxide liquid with the polypropylene to obtain a mixture, extruding and granulating the mixture on a double-screw extruder to obtain modified polypropylene, and controlling the first-zone temperature of the extruder to be 140 ℃, the second-zone temperature to be 150 ℃, the third-zone temperature to be 160 ℃, the fourth-zone temperature to be 170 ℃, the fifth-zone temperature to be 180 ℃, the sixth-zone temperature to be 190 ℃, the seventh-zone temperature to be 200 ℃, the eighth-zone temperature to be 200 ℃, the ninth-zone temperature to be 200 ℃, the temperature of the modified polypropylene during extrusion to be 200 ℃ and the rotating speed of the extruder to be 200r/min; the mixture is extruded through a die head after impurities are filtered by a 500-mesh filter screen in an extruder.
The modified polypropylene in the present example is syndiotactic modified polypropylene ， The modified polypropylene thus prepared was tested in the same manner as in example 1, and it was found that the molecular weight distribution was 8; the weight average molecular weight is 200000; number average moleculeIn an amount of 25000; the melt index is 2.5g/10min; the ash content was 70ppm.
Example 3
The embodiment provides a modified polypropylene-based insulating material, which comprises, by mass, 70wt% of modified polypropylene, 29wt% of a first component, 0.6wt% of a second component, and 0.4wt% of an antioxidant;
in this example, the first component is a thermoplastic elastomer TPR having a melting point of 70 ℃ and a tensile strength of 12MPa; the second component is oxazoline; the antioxidant is antioxidant 300;
the present invention also provides a method for preparing the modified polypropylene-based insulating material, comprising the following steps:
mixing the modified polypropylene, the first component, the second component and the antioxidant by adopting a low mixer at 30 ℃ to obtain a mixture, controlling the rotating speed of the low mixer to be 150rpm during mixing, and controlling the mixing environment to be ten thousand grades; then extruding and granulating the mixture on a double-screw extruder to obtain insulating particles, wherein the first zone temperature of the extruder is controlled to be 140 ℃, the second zone temperature is controlled to be 150 ℃, the third zone temperature is controlled to be 160 ℃, the fourth zone temperature is controlled to be 170 ℃, the fifth zone temperature is controlled to be 180 ℃, the sixth zone temperature is controlled to be 190 ℃, the seventh zone temperature is controlled to be 200 ℃, the eighth zone temperature is controlled to be 200 ℃, the ninth zone temperature is controlled to be 200 ℃, the extruding temperature of the insulating particles is controlled to be 200 ℃, and the rotating speed of the extruder is controlled to be 200r/min; filtering impurities in the mixture in an extruder through a 500-mesh filter screen, and extruding the mixture through a die head;
dewatering, drying and cooling the insulating particles by an air cooling system 。
The present embodiment also provides the above modified polypropylene, wherein the raw materials for forming the modified polypropylene include polypropylene and dicumyl peroxide, and a mass ratio of the polypropylene to the dicumyl peroxide is 100; the preparation method of the modified polypropylene comprises the following steps:
melting dicumyl peroxide into liquid at 70 ℃, atomizing the dicumyl peroxide liquid by using a high-speed mixer, spraying the atomized dicumyl peroxide liquid on the surface of polypropylene, uniformly mixing the atomized dicumyl peroxide liquid with the polypropylene to obtain a mixture, extruding and granulating the mixture on a double-screw extruder to obtain modified polypropylene, and controlling the first-zone temperature of the extruder to be 140 ℃, the second-zone temperature to be 150 ℃, the third-zone temperature to be 160 ℃, the fourth-zone temperature to be 170 ℃, the fifth-zone temperature to be 180 ℃, the sixth-zone temperature to be 190 ℃, the seventh-zone temperature to be 200 ℃, the eighth-zone temperature to be 200 ℃, the ninth-zone temperature to be 200 ℃, the temperature of the modified polypropylene during extrusion to be 200 ℃ and the rotating speed of the extruder to be 200r/min; the mixture is extruded through a die head after impurities are filtered by a 500-mesh filter screen in an extruder.
In this example, the modified polypropylene was syndiotactic modified polypropylene ， The modified polypropylene thus prepared was tested in the same manner as in example 1, and it was found that the molecular weight distribution was 6; the weight average molecular weight is 240000; the number average molecular weight is 40000; the melt index is 0.5g/10min; the ash content was 50ppm.
Example 4
The embodiment provides a modified polypropylene-based insulating material, which comprises, by mass, 80wt% of modified polypropylene, 18.8wt% of a first component, 1wt% of a second component, and 0.2wt% of an antioxidant;
in this example, the first component is a thermoplastic elastomer TPR having a melting point of 80 ℃ and a tensile strength of 10MPa; the second component is fatty carboxylic acid; the antioxidant is antioxidant 300;
the embodiment also provides a preparation method of the modified polypropylene-based insulating material, which comprises the following steps:
mixing the modified polypropylene, the first component, the second component and the antioxidant by adopting a low mixer at 30 ℃ to obtain a mixture, controlling the rotating speed of the low mixer to be 150rpm during mixing, and controlling the mixing environment to be ten thousand grades; then extruding and granulating the mixture on a double-screw extruder to obtain insulating particles, wherein the first zone temperature of the extruder is controlled to be 140 ℃, the second zone temperature is controlled to be 150 ℃, the third zone temperature is controlled to be 160 ℃, the fourth zone temperature is controlled to be 170 ℃, the fifth zone temperature is controlled to be 180 ℃, the sixth zone temperature is controlled to be 190 ℃, the seventh zone temperature is controlled to be 200 ℃, the eighth zone temperature is controlled to be 200 ℃, the ninth zone temperature is controlled to be 200 ℃, the extruding temperature of the insulating particles is controlled to be 200 ℃, and the rotating speed of the extruder is controlled to be 200r/min; filtering impurities in the mixture in an extruder through a 500-mesh filter screen, and extruding the mixture through a die head;
dewatering, drying and cooling the insulating particles by an air cooling system 。
The present embodiment also provides the above modified polypropylene, wherein the raw materials for forming the modified polypropylene include polypropylene and dicumyl peroxide, and the mass ratio of polypropylene to dicumyl peroxide is 100; the preparation method of the modified polypropylene comprises the following steps:
melting dicumyl peroxide into liquid at 70 ℃, atomizing the dicumyl peroxide liquid by using a high-speed mixer, spraying the atomized dicumyl peroxide liquid on the surface of polypropylene, uniformly mixing the atomized dicumyl peroxide liquid with the polypropylene to obtain a mixture, extruding and granulating the mixture on a double-screw extruder to obtain modified polypropylene, and controlling the first-zone temperature of the extruder to be 140 ℃, the second-zone temperature to be 150 ℃, the third-zone temperature to be 160 ℃, the fourth-zone temperature to be 170 ℃, the fifth-zone temperature to be 180 ℃, the sixth-zone temperature to be 190 ℃, the seventh-zone temperature to be 200 ℃, the eighth-zone temperature to be 200 ℃, the ninth-zone temperature to be 200 ℃, the temperature of the modified polypropylene during extrusion to be 200 ℃ and the rotating speed of the extruder to be 200r/min; the mixture is extruded through a die head after impurities are filtered by a 500-mesh filter screen in an extruder.
In this example, the modified polypropylene was syndiotactic modified polypropylene ， The modified polypropylene thus prepared was tested in the same manner as in example 1, and it was found that the molecular weight distribution was 8; the weight average molecular weight is 240000; the number average molecular weight is 30000; the melt index is 3.5g/10min; the ash content was 60ppm.
Example 5
The embodiment provides a modified polypropylene-based insulating material, which comprises, by mass, 85wt% of modified polypropylene, 13.7wt% of a first component, 0.3wt% of a second component, and 1wt% of an antioxidant;
the first component in this example is a polyolefin elastomer having a melting point of 80 ℃ and a tensile strength of 11MPa; the second component is acrylic acid; the antioxidant is antioxidant 300;
the embodiment also provides a preparation method of the modified polypropylene-based insulating material, which comprises the following steps:
mixing the modified polypropylene, the first component, the second component and the antioxidant by adopting a low mixer at 30 ℃ to obtain a mixture, controlling the rotating speed of the low mixer to be 150rpm during mixing, and controlling the mixing environment to be ten thousand grades; then extruding and granulating the mixture on a double-screw extruder to obtain insulating particles, wherein the first zone temperature of the extruder is controlled to be 140 ℃, the second zone temperature is controlled to be 150 ℃, the third zone temperature is controlled to be 160 ℃, the fourth zone temperature is controlled to be 170 ℃, the fifth zone temperature is controlled to be 180 ℃, the sixth zone temperature is controlled to be 190 ℃, the seventh zone temperature is controlled to be 200 ℃, the eighth zone temperature is controlled to be 200 ℃, the ninth zone temperature is controlled to be 200 ℃, the extruding temperature of the insulating particles is controlled to be 200 ℃, and the rotating speed of the extruder is controlled to be 200r/min; filtering impurities in the mixture in an extruder through a 500-mesh filter screen, and extruding the mixture through a die head;
dewatering, drying and cooling the insulating particles by an air cooling system 。
The present embodiment also provides the above modified polypropylene, wherein the raw materials for forming the modified polypropylene include polypropylene and dicumyl peroxide, and the mass ratio of polypropylene to dicumyl peroxide is 100; the preparation method of the modified polypropylene comprises the following steps:
melting dicumyl peroxide into liquid at 70 ℃, atomizing the dicumyl peroxide liquid by using a high-speed mixer, spraying the atomized dicumyl peroxide liquid on the surface of polypropylene, uniformly mixing the atomized dicumyl peroxide liquid with the polypropylene to obtain a mixture, extruding and granulating the mixture on a double-screw extruder to obtain modified polypropylene, and controlling the first-zone temperature of the extruder to be 140 ℃, the second-zone temperature to be 150 ℃, the third-zone temperature to be 160 ℃, the fourth-zone temperature to be 170 ℃, the fifth-zone temperature to be 180 ℃, the sixth-zone temperature to be 190 ℃, the seventh-zone temperature to be 200 ℃, the eighth-zone temperature to be 200 ℃, the ninth-zone temperature to be 200 ℃, the temperature of the modified polypropylene during extrusion to be 200 ℃ and the rotating speed of the extruder to be 200r/min; the mixture is extruded through a die head after impurities are filtered by a 500-mesh filter screen in an extruder.
In this example, the modified polypropylene was a random modified polypropylene, and the molecular weight distribution of the modified polypropylene was 10 as determined by testing the modified polypropylene prepared in the same manner as in example 1; the weight average molecular weight is 250000; number average molecular weight 25000; the melt index is 4g/10min; the ash content was 90ppm.
Example 6
The embodiment provides a modified polypropylene-based insulating material, which comprises, by mass, 90wt% of modified polypropylene, 8wt% of a first component, 1wt% of a second component, and 1wt% of an antioxidant;
the first component in this example is a polyolefin elastomer having a melting point of 60 ℃ and a tensile strength of 10MPa; the second component is maleic anhydride; the antioxidant is antioxidant 300;
the present invention also provides a method for preparing the modified polypropylene-based insulating material, comprising the following steps:
mixing the modified polypropylene, the first component, the second component and the antioxidant by adopting a low mixer at 30 ℃ to obtain a mixture, wherein the rotating speed of the low mixer is controlled to be 150rpm during mixing, and the mixing environment is controlled to be ten thousand; then extruding and granulating the mixture on a double-screw extruder to obtain insulating particles, wherein the first zone temperature of the extruder is controlled to be 140 ℃, the second zone temperature is controlled to be 150 ℃, the third zone temperature is controlled to be 160 ℃, the fourth zone temperature is controlled to be 170 ℃, the fifth zone temperature is controlled to be 180 ℃, the sixth zone temperature is controlled to be 190 ℃, the seventh zone temperature is controlled to be 200 ℃, the eighth zone temperature is controlled to be 200 ℃, the ninth zone temperature is controlled to be 200 ℃, the extruding temperature of the insulating particles is controlled to be 200 ℃, and the rotating speed of the extruder is controlled to be 200r/min; filtering impurities in the mixture in an extruder through a 500-mesh filter screen, and extruding the mixture through a die head;
dewatering, drying and cooling the insulating particles by an air cooling system 。
The present embodiment also provides the above modified polypropylene, wherein the raw materials for forming the modified polypropylene include polypropylene and dicumyl peroxide, and a mass ratio of the polypropylene to the dicumyl peroxide is 100; the preparation method of the modified polypropylene comprises the following steps:
melting dicumyl peroxide into liquid at 70 ℃, atomizing the dicumyl peroxide liquid by using a high-speed mixer, spraying the atomized dicumyl peroxide liquid on the surface of polypropylene, uniformly mixing the atomized dicumyl peroxide liquid with the polypropylene to obtain a mixture, extruding and granulating the mixture on a double-screw extruder to obtain modified polypropylene, and controlling the first-zone temperature of the extruder to be 140 ℃, the second-zone temperature to be 150 ℃, the third-zone temperature to be 160 ℃, the fourth-zone temperature to be 170 ℃, the fifth-zone temperature to be 180 ℃, the sixth-zone temperature to be 190 ℃, the seventh-zone temperature to be 200 ℃, the eighth-zone temperature to be 200 ℃, the ninth-zone temperature to be 200 ℃, the temperature of the modified polypropylene during extrusion to be 200 ℃ and the rotating speed of the extruder to be 200r/min; the mixture is extruded through a die head after impurities are filtered by a 500-mesh filter screen in an extruder.
The modified polypropylene in the example is random modified polypropylene ， The modified polypropylene thus prepared was tested in the same manner as in example 1, and it was found that the molecular weight distribution was 9; the weight average molecular weight is 180000; the number average molecular weight is 20000; the melt index is 5g/10min; the ash content was 50ppm.
Comparative example 1
This comparative example provides an insulating material, the only difference from example 1 being that the polypropylene used in the preparation is unmodified polypropylene.
Comparative example 2
This comparative example provides an insulation which differs from example 1 only in that the insulation comprises 40wt% modified polypropylene, 58wt% first component, 1wt% second component, 1wt% antioxidant.
Comparative example 3
This comparative example provides an insulation which differs from example 1 only in that the insulation comprises 30wt% modified polypropylene, 69wt% first component, 0.5wt% second component, 0.5wt% antioxidant.
Test example 1
The melt index of the insulation materials prepared in the examples and comparative examples was measured at 190 ℃ according to ASTM D1238 thermoplastic melt flow Rate test, the results of which are shown in Table 1.
Test example 2
The impact toughness of the insulating materials prepared in the examples and the comparative examples is tested at-40 ℃ according to the method of GB/T1682-2014, the proportion of fracture samples after 30 samples of the examples and the comparative examples are subjected to impact at-40 ℃ is counted, and the test results are shown in Table 1.
TABLE 1 test results of examples and comparative examples
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications derived therefrom are intended to be within the scope of the invention.
Claims (12)
1. The modified polypropylene-based insulating material is characterized by comprising 50-90wt% of modified polypropylene, 8-49wt% of a first component, 0.05-2wt% of a second component and 0.1-1wt% of an antioxidant by mass percent;
the modified polypropylene is organic peroxide modified polypropylene; the first component is a thermoplastic elastomer; the second component includes at least one of maleic anhydride, an acrylic compound, a fatty carboxylic acid, and an oxazoline.
2. The modified polypropylene-based insulating material according to claim 1, wherein the modified polypropylene has a molecular weight distribution of 6 to 10, a weight average molecular weight of 180000 to 250000g/mol, and a number average molecular weight of 20000 to 40000g/mol;
and/or the melt index of the modified polypropylene is 0.5-5g/10min;
and/or the ash content of the modified polypropylene is less than 100 ppm.
3. The modified polypropylene-based insulation material according to claim 2, wherein the melt index of the modified polypropylene is 1 to 3g/10min.
4. A modified polypropylene based insulation according to any one of claims 1-3, wherein the thermoplastic elastomer comprises at least one of hydrogenated styrene-butadiene block copolymer, polyolefin elastomer, thermoplastic elastomer TPR and thermoplastic rubber.
5. The modified polypropylene-based insulation material according to claim 4, wherein the hydrogenated styrene-butadiene block copolymer has a melting point of 140 to 160 ℃ and a tensile strength of 5 to 10MPa;
and/or the melting point of the polyolefin elastomer is 60-80 ℃, and the tensile strength is 8-12MPa.
6. The modified polypropylene-based insulation material according to any one of claims 1 to 5, wherein the antioxidant comprises at least one of antioxidant 300, antioxidant 1010 and antioxidant 168.
7. A process for the preparation of a modified polypropylene based insulation according to any one of claims 1 to 6 comprising the steps of:
mixing the modified polypropylene, the first component, the second component and the antioxidant, and then extruding and granulating;
dehydrating, drying, and cooling 。
8. The method of claim 7, wherein the temperature of extrusion after mixing is 170-205 ℃;
and/or, mixing by using a low-speed mixer during mixing, wherein the mixing speed is 100-150rpm.
9. The modified polypropylene in the modified polypropylene-based insulation material according to any one of claims 1 to 6, wherein the raw materials for forming the modified polypropylene comprise polypropylene and an organic peroxide;
the organic peroxide includes at least one of 3,6, 9-triethyl-3, 6, 9-trimethyl-1, 4, 7-triperoxonane, 2, 5-dimethyl-2, 5-di (t-butylperoxy) hexane, and dicumyl peroxide.
10. The modified polypropylene according to claim 9, wherein the mass ratio of the polypropylene to the organic peroxide is 100 (0.1-0.5).
11. The process for modifying modified polypropylene according to any one of claims 9 to 10, comprising the steps of: atomizing the organic peroxide, uniformly mixing with polypropylene, and extruding.
12. A power cable made of the modified polypropylene-based insulation material according to any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211397763.5A CN115505211A (en) | 2022-11-09 | 2022-11-09 | Modified polypropylene-based insulating material, preparation method thereof and modified polypropylene |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211397763.5A CN115505211A (en) | 2022-11-09 | 2022-11-09 | Modified polypropylene-based insulating material, preparation method thereof and modified polypropylene |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115505211A true CN115505211A (en) | 2022-12-23 |
Family
ID=84513683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211397763.5A Pending CN115505211A (en) | 2022-11-09 | 2022-11-09 | Modified polypropylene-based insulating material, preparation method thereof and modified polypropylene |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115505211A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5405917A (en) * | 1992-07-15 | 1995-04-11 | Phillips Petroleum Company | Selective admixture of additives for modifying a polymer |
| CN108912492A (en) * | 2018-07-06 | 2018-11-30 | 江苏上上电缆集团有限公司 | A kind of environment-friendly type insulated material and preparation method thereof for medium-pressure power cable |
| CN110330727A (en) * | 2019-07-29 | 2019-10-15 | 上海至正道化高分子材料股份有限公司 | A kind of mesohigh is with thermoplastic insulation material and preparation method thereof |
| CN114716769A (en) * | 2022-04-19 | 2022-07-08 | 国网智能电网研究院有限公司 | Polypropylene insulated cable material and preparation method and application thereof |
-
2022
- 2022-11-09 CN CN202211397763.5A patent/CN115505211A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5405917A (en) * | 1992-07-15 | 1995-04-11 | Phillips Petroleum Company | Selective admixture of additives for modifying a polymer |
| CN108912492A (en) * | 2018-07-06 | 2018-11-30 | 江苏上上电缆集团有限公司 | A kind of environment-friendly type insulated material and preparation method thereof for medium-pressure power cable |
| CN110330727A (en) * | 2019-07-29 | 2019-10-15 | 上海至正道化高分子材料股份有限公司 | A kind of mesohigh is with thermoplastic insulation material and preparation method thereof |
| CN114716769A (en) * | 2022-04-19 | 2022-07-08 | 国网智能电网研究院有限公司 | Polypropylene insulated cable material and preparation method and application thereof |
Non-Patent Citations (4)
| Title |
|---|
| 梁淑君, 李东红, 赵洪池: "聚丙烯的接枝改性技术", 塑料, no. 01, pages 251 - 10 * |
| 郭云霞;任星林;王标兵;胡国胜;: "原位交联改性PP/POE共混物的等温结晶行为", 高分子材料科学与工程, no. 03, pages 46 - 49 * |
| 钱立军: "《高分子材料》", 中国轻工业出版社, pages: 17 * |
| 马德鹏;魏华;吴凤龙;赵彦生;: "交联改性聚丙烯的研究", 应用化工, no. 03, pages 405 - 407 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101914288B (en) | Nylon 6 mineral fiber composite material for automobile engine cover lid and preparation method thereof | |
| CN102108205B (en) | Low-smell toughening polyamide (PA) 6 material and preparation method thereof | |
| CN103421309B (en) | A kind of automobile cold-resistance super tough reinforced nylon 6 material and preparation method thereof | |
| CN1072240C (en) | Masterbatch formulation for polyolefin applications | |
| CN110903535A (en) | Low-smoke halogen-free flame-retardant sheath material with good cold resistance for cable and preparation method thereof | |
| CN102391432B (en) | High-fluidity ethylene-alpha-octene graft copolymer and preparation method thereof | |
| CN103849143A (en) | Lightweight glass fiber reinforced polyamide material and its preparation method | |
| CN103030885B (en) | Long glass-fiber reinforced polypropylene material with low emission and high performance and production method thereof | |
| CN104004271A (en) | Low-temperature-resistant polypropylene special material | |
| CN104961965A (en) | Halogen-free polyolefin cable material with high temperature resistance and antiblocking function for outdoor optical cable and preparation method thereof | |
| CN102295798B (en) | Zero-halogen low-smoke flame-retardant injection molding material for branch cable and preparation as well as application thereof | |
| CN103772813A (en) | Low-floating fiber glass fiber reinforced polypropylene composite material and preparation method thereof | |
| CN103571040A (en) | High-strength, high-toughness and high-rigidity polypropylene composite material and preparation method thereof | |
| CN112745547A (en) | Thermal-oxidative-aging-resistant regenerated polyethylene material and preparation method and application thereof | |
| CN103289369A (en) | Polyamide wood-plastic composite material and preparation method thereof | |
| CN102898715B (en) | Extremely temperature sensitive halogen-free and low smoke flame retardant plastic alloy for cables and preparation method thereof | |
| CN101781426A (en) | CPE/POE (chlorinated polyethylene/polyolefin elastomer) component type electro-insulating rubber and preparation method thereof | |
| CN105924799A (en) | Preparation method for cold-resistant polypropylene | |
| CN102731919A (en) | High-speed-extruding oil-proof wear-resisting irradiation crosslinking rubber material and preparation method thereof | |
| CN115505211A (en) | Modified polypropylene-based insulating material, preparation method thereof and modified polypropylene | |
| CN107501719A (en) | One kind polymer-filled master batch and preparation method thereof made of polypropylene reclaimed material | |
| CN113045810A (en) | Super-wear-resistant composite pipe and preparation method thereof | |
| CN102295797B (en) | Zero-halogen flame-retardant polyolefin material and preparation method as well as application thereof | |
| CN112552595A (en) | High-strength high-toughness glass fiber reinforced polypropylene material and preparation method thereof | |
| CN102532661B (en) | Natural fiber filled polyethylene composite material and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20231116 Address after: 102209 18 Riverside Avenue, Changping District science and Technology City, Beijing Applicant after: State Grid Smart Grid Research Institute Co.,Ltd. Applicant after: STATE GRID HEBEI ELECTRIC POWER Research Institute Applicant after: GLOBAL ENERGY INTERCONNECTION RESEARCH INSTITUTE EUROPE GmbH Address before: 102209 18 Riverside Avenue, Changping District science and Technology City, Beijing Applicant before: State Grid Smart Grid Research Institute Co.,Ltd. |
|
| TA01 | Transfer of patent application right |