CN112812442A - PPR material with high low-temperature toughness and high oxygen resistance and preparation method thereof - Google Patents
PPR material with high low-temperature toughness and high oxygen resistance and preparation method thereof Download PDFInfo
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- CN112812442A CN112812442A CN202011566902.3A CN202011566902A CN112812442A CN 112812442 A CN112812442 A CN 112812442A CN 202011566902 A CN202011566902 A CN 202011566902A CN 112812442 A CN112812442 A CN 112812442A
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- 239000000463 material Substances 0.000 title claims abstract description 60
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 26
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 26
- 239000001301 oxygen Substances 0.000 title claims abstract description 26
- 238000002360 preparation method Methods 0.000 title abstract description 14
- 239000010445 mica Substances 0.000 claims abstract description 24
- 229910052618 mica group Inorganic materials 0.000 claims abstract description 24
- 239000000843 powder Substances 0.000 claims abstract description 24
- HKUFIYBZNQSHQS-UHFFFAOYSA-N n-octadecyloctadecan-1-amine Chemical class CCCCCCCCCCCCCCCCCCNCCCCCCCCCCCCCCCCCC HKUFIYBZNQSHQS-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000000155 melt Substances 0.000 claims description 14
- 238000002156 mixing Methods 0.000 claims description 14
- 238000001125 extrusion Methods 0.000 claims description 10
- 229920001911 maleic anhydride grafted polypropylene Polymers 0.000 claims description 10
- 230000005484 gravity Effects 0.000 claims description 7
- 238000002844 melting Methods 0.000 claims description 7
- 230000008018 melting Effects 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 7
- 238000005303 weighing Methods 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 5
- 239000008187 granular material Substances 0.000 claims description 5
- 238000005469 granulation Methods 0.000 claims description 5
- 230000003179 granulation Effects 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 239000002994 raw material Substances 0.000 abstract description 3
- 230000009471 action Effects 0.000 abstract description 2
- 230000008901 benefit Effects 0.000 abstract description 2
- 238000013329 compounding Methods 0.000 abstract description 2
- 238000011031 large-scale manufacturing process Methods 0.000 abstract 1
- 229920005630 polypropylene random copolymer Polymers 0.000 description 58
- 239000004743 Polypropylene Substances 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- -1 polypropylene Polymers 0.000 description 3
- 229920001155 polypropylene Polymers 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 229920001519 homopolymer Polymers 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 239000005022 packaging material Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 229920005604 random copolymer Polymers 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 238000000071 blow moulding Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000005003 food packaging material Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- 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
- C08L23/14—Copolymers of propene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/14—Gas barrier composition
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/10—Peculiar tacticity
- C08L2207/14—Amorphous or atactic polypropylene
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention provides a PPR material with high low-temperature toughness and high oxygen resistance and a preparation method thereof, wherein the PPR material comprises the following raw material components in parts by weight: 71-82 parts of PPR; 1-6 parts of mica powder; 12-20 parts of a polar compatilizer; 1-3 parts of dioctadecyl ammonium salt. The PPRPPR material with higher low-temperature toughness and high oxygen resistance provided by the invention has higher low-temperature toughness and high oxygen resistance under the compounding action of the mica powder, the polar compatilizer and the dioctadecyl ammonium salt; in addition, the PPR material provided by the invention has the advantages of simple preparation process, easily obtained raw materials and equipment, and large-scale production.
Description
Technical Field
The invention relates to the technical field of PPR materials, in particular to a PPR material with high low-temperature toughness and high oxygen resistance and a preparation method thereof.
Background
The PPR product has good toughness, high strength, excellent processing performance, good creep resistance at higher temperature and the special advantage of high transparency of the polypropylene random copolymer, and can be widely used for producing pipes, sheets, daily necessities, packaging materials, household appliance parts and various films. PPR is one kind of polypropylene, the basic structure of its high molecular chain is modified by adding different kinds of monomer molecules, ethylene is the most commonly used monomer molecule, and the modification by adding polypropylene can cause the change of polypropylene physical property. Compared to PP homopolymer, random copolymers improve optical properties (increased transparency and reduced haze), improve impact resistance, increase flexibility, lower melt temperature, and thus lower heat-fusion temperature; while the random copolymer is substantially the same as the homopolymer in terms of chemical stability, water vapor barrier properties and organoleptic properties (low odor). The product can be used in the fields of blow molding, injection molding, film and sheet extrusion processing, and can be used as food packaging materials, medicine packaging materials and daily consumer goods.
When the PPR container is produced, the low-temperature toughness and the oxygen resistance of the PPR are poor, so that the container made of the PPR material is often embrittled due to weather cooling in the actual use process, oxygen enters the container, stored articles are oxidized and deteriorated, and the application range of the PPR is greatly limited. Therefore, how to prepare a PPR material with good low-temperature toughness and good oxygen resistance is a problem which needs to be solved urgently by research and development personnel.
Disclosure of Invention
The invention provides a PPR material with high low-temperature toughness and high oxygen resistance and a preparation method thereof to solve the problems in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a PPR material with high low-temperature toughness and high oxygen resistance, which comprises the following components in parts by mass:
further, the melt index of PPR is 0.24-0.36 g/10min, the Vicat softening point is 133-136 ℃, the yield strength is 28MPa, and the elastic modulus is 950 MPa.
Furthermore, the diameter-thickness ratio of the mica powder is more than 80, the specific gravity is 2.6-2.7, and the particle size is 200-500 meshes.
Further, the polar compatibilizer is maleic anhydride grafted polypropylene.
Further, the density of the maleic anhydride grafted polypropylene is 0.865-0.875 g/cm3The grafting rate is 0.8-1.5%, the melt index at 190 ℃ and 2.16kg is 45-50 g/10min, the tensile strength is 25-28 MPa, and the melting point is 135-140 ℃.
In a second aspect of the present invention, there is provided a method for preparing the above PPR material, comprising the steps of:
weighing PPR, mica powder, a polar compatilizer and dioctadecyl ammonium salt according to the mass parts, and then uniformly mixing the PPR, the mica powder, the polar compatilizer and the dioctadecyl ammonium salt to obtain a material;
and step two, adding the materials into an extruder for extrusion granulation.
Further, the mixing temperature is 40-60 ℃.
Further, the temperature of extrusion granulation is 180-200 ℃, and the rotating speed of an extruder screw is 300-350 rpm.
By adopting the technical scheme, compared with the prior art, the invention has the following technical effects:
the PPR material with high low-temperature toughness and high oxygen resistance provided by the invention has high low-temperature toughness and high oxygen resistance under the compounding action of PPR, mica powder, a polar compatilizer and dioctadecyl ammonium salt; in addition, the invention also provides a preparation method of the PPR material with high low-temperature toughness and high oxygen resistance, the preparation process is simple, raw materials and equipment are easy to obtain, and the PPR material can be produced in a large scale.
Detailed Description
The invention provides a PPR material with high low-temperature toughness and high oxygen resistance and a preparation method thereof, wherein the PPR material comprises the following components in parts by mass:
in a preferred embodiment of the present invention, the PPR has a melt index of 0.24 to 0.36g/10min, a Vicat softening point of 133 to 136 ℃, a yield strength of 28MPa, and an elastic modulus of 950 MPa.
In a preferred embodiment of the present invention, the mica powder has a diameter-thickness ratio of more than 80, a specific gravity of 2.6 to 2.7, and a particle size of 200 to 500 mesh.
In a preferred embodiment of the present invention, the polar compatibilizer is maleic anhydride grafted polypropylene.
In a preferred embodiment of the present invention, the density of the maleic anhydride grafted polypropylene is 0.865 to 0.875g/cm3The grafting rate is 0.8-1.5%, the melt index at 190 ℃ and 2.16kg is 45-50 g/10min, the tensile strength is 25-28 MPa, and the melting point is 135-140 ℃.
The preparation method of the PPRPPR material comprises the following steps:
weighing PPR, mica powder, a polar compatilizer and dioctadecyl ammonium salt according to the mass parts, and then uniformly mixing the PPR, the mica powder, the polar compatilizer and the dioctadecyl ammonium salt to obtain a material;
and step two, adding the materials into an extruder for extrusion granulation.
In a preferred embodiment of the present invention, the mixing temperature is 40 to 60 ℃.
In a preferred embodiment of the present invention, the temperature of the extrusion granulation is 180 to 200 ℃, and the rotation speed of the extruder screw is 300 to 350 rpm.
The present invention will be described in detail and specifically with reference to the following examples to facilitate better understanding of the present invention, but the following examples do not limit the scope of the present invention.
Example 1
The embodiment provides a PPR material with high low-temperature toughness and high oxygen resistance, which comprises the following components in parts by mass:
wherein the PPR has a melt index of 0.24-0.36 g/10min, a Vicat softening point of 133-136 ℃, a yield strength of 28MPa and an elastic modulus of 950 MPa.
The mica powder has the diameter-thickness ratio of more than 80, the specific gravity of 2.6-2.7 and the particle size of 400 meshes.
The polar compatilizer is maleic anhydride grafted polypropylene and has a density of 0.865-0.875 g/cm3The grafting rate is 0.8-1.5%, the melt index is 45-50 g/10min (190 ℃, 2.16kg), the tensile strength is 25-28 MPa, and the melting point is 135-140 ℃.
The preparation method of the PPR material comprises the following steps:
step one, weighing PPR, mica powder, a polar compatilizer and dioctadecyl ammonium salt according to a ratio, adding the PPR, the mica powder, the polar compatilizer and the dioctadecyl ammonium salt into a high-speed mixer, and uniformly mixing to obtain a material, wherein the mixing temperature is 40-60 ℃;
and secondly, adding the materials into a double-screw extruder to extrude and granulate, wherein the extrusion temperature of the double-screw extruder is 180-200 ℃, the rotating speed of a screw of the extruder is 300-350 rpm, and finally drying to obtain the PPR material.
Example 2
The embodiment provides a PPR material with high low-temperature toughness and high oxygen resistance, which comprises the following components in parts by mass:
wherein the PPR has a melt index of 0.24-0.36 g/10min, a Vicat softening point of 133-136 ℃, a yield strength of 28MPa and an elastic modulus of 950 MPa.
The mica powder has the diameter-thickness ratio of more than 80, the specific gravity of 2.6-2.7 and the particle size of 300 meshes.
The polar compatilizer is maleic anhydride grafted polypropylene and has a density of 0.865-0.875 g/cm3The grafting rate is 0.8-1.5%, the melt index is 45-50 g/10min (190 ℃, 2.16kg), the tensile strength is 25-28 MPa, and the melting point is 135-140 ℃.
The preparation method of the PPR material comprises the following steps:
weighing PPR, mica powder, a polar compatilizer and dioctadecyl ammonium salt according to a ratio, adding the PPR, the mica powder, the polar compatilizer and the dioctadecyl ammonium salt into a high-speed mixer, and uniformly mixing to obtain a material, wherein the mixing temperature is 40-60 ℃;
and secondly, adding the materials into a double-screw extruder to extrude and granulate, wherein the extrusion temperature of the double-screw extruder is 180-200 ℃, the rotating speed of a screw of the extruder is 300-350 rpm, and finally drying to obtain the PPR material.
Example 3
The embodiment provides a PPR material with high low-temperature toughness and high oxygen resistance, which comprises the following components in parts by mass:
wherein the PPR has a melt index of 0.24-0.36 g/10min, a Vicat softening point of 133-136 ℃, a yield strength of 28MPa and an elastic modulus of 950 MPa.
The mica powder has the diameter-thickness ratio of more than 80, the specific gravity of 2.6-2.7 and the particle size of 400 meshes.
The polar compatilizer is maleic anhydride grafted polypropylene and has a density of 0.865-0.875 g/cm3The grafting ratio is 0.8-1.5%, the melt index is 45-50 g/10min (190 ℃, 2.16kg), the tensile strength is 25-28 MPa, and the melting point is 135E ℃140℃。
The preparation method of the PPR material comprises the following steps:
weighing PPR, mica powder, a polar compatilizer and dioctadecyl ammonium salt according to a ratio, adding the PPR, the mica powder, the polar compatilizer and the dioctadecyl ammonium salt into a high-speed mixer, and uniformly mixing to obtain a material, wherein the mixing temperature is 40-60 ℃;
and secondly, adding the materials into a double-screw extruder to extrude and granulate, wherein the extrusion temperature of the double-screw extruder is 180-200 ℃, the rotating speed of a screw of the extruder is 300-350 rpm, and finally drying to obtain the PPR material.
Example 4
The embodiment provides a PPR material with high low-temperature toughness and high oxygen resistance, which comprises the following components in parts by mass:
wherein the PPR has a melt index of 0.24-0.36 g/10min, a Vicat softening point of 133-136 ℃, a yield strength of 28MPa and an elastic modulus of 950 MPa.
The mica powder has the diameter-thickness ratio of more than 80, the specific gravity of 2.6-2.7 and the particle size of 300 meshes.
The polar compatilizer is maleic anhydride grafted polypropylene and has a density of 0.865-0.875 g/cm3The grafting rate is 0.8-1.5%, the melt index is 45-50 g/10min (190 ℃, 2.16kg), the tensile strength is 25-28 MPa, and the melting point is 135-140 ℃.
The preparation method of the PPR material comprises the following steps:
weighing PPR, mica powder, a polar compatilizer and dioctadecyl ammonium salt according to a ratio, adding the PPR, the mica powder, the polar compatilizer and the dioctadecyl ammonium salt into a high-speed mixer, and uniformly mixing to obtain a material, wherein the mixing temperature is 40-60 ℃;
and secondly, adding the materials into a double-screw extruder to extrude and granulate, wherein the extrusion temperature of the double-screw extruder is 180-200 ℃, the rotating speed of a screw of the extruder is 300-350 rpm, and finally drying to obtain the PPR material.
Verification examples
The PPR materials provided by the embodiments 1-4 are subjected to performance tests, and the PPR materials purchased in the market are taken as comparative examples to respectively test the notch strength and the oxygen resistance, wherein the notch impact strength test adopts the standard GB/T1843-2008, and the oxygen resistance test adopts the standard GB/T31354. The results are shown in Table 1.
TABLE 1 partial Performance parameters of PPR materials
As shown in table 1, compared to the comparative examples, the PPR materials provided in examples 1 to 4 had higher-20 ℃ notched impact strength than the PPR materials purchased in the market in the comparative examples, and lower oxygen transmission rate than the PPR materials purchased in the market. The higher the notch impact strength at-20 ℃ is, the better the low-temperature toughness of the material is, and the lower the oxygen transmission rate is, the better the oxygen barrier property is. Therefore, compared with the existing PPR material in the market, the PPR material provided by the invention has better low-temperature toughness and oxygen resistance.
The embodiments of the present invention have been described in detail, but the embodiments are merely examples, and the present invention is not limited to the embodiments described above. Any equivalent modifications and substitutions to those skilled in the art are also within the scope of the present invention. Accordingly, equivalent changes and modifications made without departing from the spirit and scope of the present invention should be covered by the present invention.
Claims (8)
1. The PPR material with high low-temperature toughness and high oxygen resistance is characterized by comprising the following components in parts by mass:
2. the PPR material of claim 1, wherein the PPR has a melt index of 0.24-0.36 g/10min, a Vicat softening point of 133-136 ℃, a yield strength of 28MPa, and an elastic modulus of 950 MPa.
3. The PPR material according to claim 1, wherein the mica powder has a diameter-thickness ratio of more than 80, a specific gravity of 2.6-2.7, and a particle size of 200-500 meshes.
4. The PPR material according to claim 1, wherein said polar compatibilizer is maleic anhydride grafted polypropylene.
5. The PPR material according to claim 4, wherein the density of the maleic anhydride grafted polypropylene is 0.865-0.875 g/cm3The grafting rate is 0.8-1.5%, the melt index at 190 ℃ and 2.16kg is 45-50 g/10min, the tensile strength is 25-28 MPa, and the melting point is 135-140 ℃.
6. A method for preparing the PPR material as defined in any one of claims 1 to 5, comprising the steps of:
weighing PPR, mica powder, a polar compatilizer and dioctadecyl ammonium salt according to the mass parts, and then uniformly mixing the PPR, the mica powder, the polar compatilizer and the dioctadecyl ammonium salt to obtain a mixed material;
and step two, adding the mixed material into an extruder to extrude and granulate, and then drying.
7. The method according to claim 6, wherein the temperature during the mixing is 40 to 60 ℃.
8. The method according to claim 6, wherein the temperature during the extrusion granulation is 180 to 200 ℃, and the rotation speed of the screw of the extruder is 300 to 350 rpm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011566902.3A CN112812442A (en) | 2020-12-25 | 2020-12-25 | PPR material with high low-temperature toughness and high oxygen resistance and preparation method thereof |
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| CN202011566902.3A CN112812442A (en) | 2020-12-25 | 2020-12-25 | PPR material with high low-temperature toughness and high oxygen resistance and preparation method thereof |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105864528A (en) * | 2014-12-19 | 2016-08-17 | 浙江梅勒派克斯阿管路系统有限公司 | Self-oxygen-resisting plastic tube |
| CN109721834A (en) * | 2018-12-20 | 2019-05-07 | 上海邦中高分子材料股份有限公司 | With the PP composite material and preparation method thereof of higher toughness under a kind of low temperature |
| CN111040304A (en) * | 2019-12-27 | 2020-04-21 | 上海邦中新材料有限公司 | High-strength high-oxygen-resistance polypropylene bonding resin and preparation method thereof |
-
2020
- 2020-12-25 CN CN202011566902.3A patent/CN112812442A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105864528A (en) * | 2014-12-19 | 2016-08-17 | 浙江梅勒派克斯阿管路系统有限公司 | Self-oxygen-resisting plastic tube |
| CN109721834A (en) * | 2018-12-20 | 2019-05-07 | 上海邦中高分子材料股份有限公司 | With the PP composite material and preparation method thereof of higher toughness under a kind of low temperature |
| CN111040304A (en) * | 2019-12-27 | 2020-04-21 | 上海邦中新材料有限公司 | High-strength high-oxygen-resistance polypropylene bonding resin and preparation method thereof |
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