CN113045819B - Glass microsphere filled polypropylene composition and preparation method thereof - Google Patents
Glass microsphere filled polypropylene composition and preparation method thereof Download PDFInfo
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- CN113045819B CN113045819B CN201911384081.9A CN201911384081A CN113045819B CN 113045819 B CN113045819 B CN 113045819B CN 201911384081 A CN201911384081 A CN 201911384081A CN 113045819 B CN113045819 B CN 113045819B
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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
- C08L23/12—Polypropene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/003—Additives being defined by their diameter
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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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
Abstract
The invention discloses a glass microsphere filled polypropylene composition and a preparation method thereof, wherein the glass microsphere filled polypropylene composition is prepared from the following components in parts by weight: 100 parts of polypropylene, 3-5 parts of polypropylene grafted maleic anhydride, 1-2 parts of polyethylene wax, 10-35 parts of glass microspheres, 1-3 parts of sodium dodecyl benzene sulfonate, 10100.05-0.1 part of antioxidant and 1680.05-0.1 part of antioxidant. According to the invention, sodium dodecyl benzene sulfonate is added into polypropylene, so that the interfacial binding capacity between polypropylene and glass beads is greatly enhanced, and the mechanical property of the polypropylene composition can be greatly improved; the polypropylene composition injection molding part prepared by the invention has the characteristics of low density, light weight, excellent mechanical property and the like.
Description
Technical Field
The invention belongs to the field of polymer composite materials, and particularly relates to a glass microsphere filled polypropylene composition and a preparation method thereof.
Background
Polypropylene, abbreviated as PP, is a colorless, odorless, nontoxic and semitransparent solid substance. Polypropylene (PP) is a thermoplastic synthetic resin with excellent performance, and is colorless translucent thermoplastic light general-purpose plastic. The polypropylene has chemical resistance, heat resistance, electrical insulation, high-strength mechanical property, good high-wear-resistance processing property and the like, so that the polypropylene can be rapidly and widely developed and applied in a plurality of fields such as machinery, automobiles, electronic and electric appliances, buildings, textiles, packaging, agriculture, forestry, fishery, food industry and the like since the coming out. In recent years, with the rapid development of packaging, electronic, automobile and other industries in China, the development of the industries in China is greatly promoted. And because of its plasticity, polypropylene materials are gradually replacing wooden products, and the mechanical functions of metals have been gradually replaced by high strength toughness and high wear resistance. In addition, the polypropylene has good grafting and compounding functions, and has huge application space in the aspects of concrete, textile, packaging and agriculture, forestry and fishery.
The glass microsphere is a hollow closed spherical and powdery ultra-light filling material. The actual density of the particles is 0.12-0.60 g/cm according to the particle size and wall thickness 3 The particle size is between 15 and 135um (including various specifications). Has the advantages of light weight, large volume, low heat conductivity coefficient, good dispersibility, good fluidity and good stability. In addition, the composite material also has excellent performances of insulation, self lubrication, sound and heat insulation, no water absorption, corrosion resistance, radiation protection, no toxicity and the like.
In the prior art, when the glass microspheres are applied to the polypropylene composition, the density of the composition can be reduced, and the strength and the impact resistance of the composition can be improved. The glass microspheres and polypropylene interfaces have poor binding capacity and poor compatibility, and commonly used coupling agents KH550 and KH570 are generally added to improve the binding force of the interfaces, however, the coupling agents have limited strength and impact resistance for improving the microsphere-filled polypropylene composition, and limit further application of the composition.
Disclosure of Invention
The invention aims to provide a glass microsphere filled polypropylene composition and a preparation method thereof, and aims to solve the problems in the prior art.
The purpose of the invention is realized by the following technical scheme:
the glass microsphere filled polypropylene composition is prepared from the following components in parts by weight:
in a further scheme, the melt index of the polypropylene at 230 ℃ and 2.16kg is 20-30g/10 min.
In a further scheme, the melt index of the polypropylene grafted maleic anhydride at 230 ℃ and under the condition of 2.16kg is 40-60g/10 min.
In a further scheme, the polyethylene wax is white powder, and the particle size is 10-12 microns.
In a further scheme, the glass microspheres are in a hollow state, and the wall thickness is 0.08-0.25 g/cm 3 The particle size is 10-150 microns.
Another object of the present invention is to provide a method for preparing the glass microsphere filled polypropylene composition, which comprises the following steps:
(1) the polyethylene wax, the glass microspheres and the sodium dodecyl benzene sulfonate are added into a mixer according to the proportion for primary mixing, the mixing temperature is 100 ℃ and 120 ℃, the mixing speed is 60-100 r/min, and the mixing time is 1-2 min; cooling to normal temperature, adding polypropylene, polypropylene grafted maleic anhydride, antioxidant 1010 and antioxidant 168, mixing for the second time at the mixing speed of 60-100 r/min for 3-5 min to obtain a mixture;
(2) and adding the mixture from a feed inlet of a double-screw extruder, and extruding and granulating to obtain the glass microsphere filled polypropylene composition.
In the scheme, the mixing speed cannot be too high, otherwise, the surface of the glass microsphere is easy to damage or dent, and the performance of the final composition is influenced.
In the step (2), the processing technology of the double-screw extruder is as follows: the first zone temperature is 180-200 ℃, the second zone temperature is 200-220 ℃, the third zone temperature is 220-230 ℃, the fourth zone temperature is 220-230 ℃, the fifth zone temperature is 220-230 ℃, the sixth zone temperature is 220-230 ℃, the head temperature is 220-230 ℃, and the rotating speed frequency of the host is 15-35HZ
Compared with the prior art, the invention has the beneficial effects that:
1. the invention mixes the sodium dodecyl benzene sulfonate, the polyethylene wax and the glass microspheres in advance, and the glass microspheres are liquid when mixed at one time due to low melting point of the polyethylene wax, so that the sodium dodecyl benzene sulfonate and the polyethylene wax can be uniformly adhered to the surfaces of the glass microspheres. Through melt extrusion, the sodium dodecyl benzene sulfonate greatly enhances the interfacial binding capacity between the polypropylene and the glass beads, and can greatly improve the mechanical property of the polypropylene composition.
2. The polypropylene composition injection molding part prepared by the invention has the characteristics of low density, light weight, excellent mechanical property and the like.
Detailed Description
The present invention will be further described with reference to the following examples. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
The types and suppliers of reagents used in this example were as follows:
polypropylene was purchased from Yanshan petrochemical under the designation K9026;
polypropylene grafted maleic anhydride was purchased from Nanjing Langshi plastics, Inc. under the designation MPP-400;
polyethylene wax was purchased from the clarien chemical industry, designation 9615A;
glass microspheres were purchased from 3M company, USA under the designation IM 30K;
the reagents are provided only for illustrating the sources and components of the reagents used in the experiments of the present invention, so as to be fully disclosed, and do not indicate that the present invention cannot be realized by using other reagents of the same type or other reagents supplied by other suppliers.
Example 1
(1) Adding 1 part of polyethylene wax, 10 parts of glass microspheres and 1 part of sodium dodecyl benzene sulfonate into a mixer for mixing, wherein the mixing temperature is 100 ℃, the mixing speed is 60 r/min, and the mixing time is 2 min; and cooling to normal temperature, then adding 100 parts of polypropylene, 3 parts of polypropylene grafted maleic anhydride, 0.05 part of antioxidant 1010 and 0.05 part of antioxidant 168, mixing at the speed of 100 revolutions per minute for 5 minutes to obtain a mixture.
(2) And adding the mixture from a feed inlet of a double-screw extruder, and extruding and granulating to obtain the polypropylene composition.
In the step (2), the processing technology of the double-screw extruder is as follows: the temperature of the first zone is 180 ℃, the temperature of the second zone is 200 ℃, the temperature of the third zone is 220 ℃, the temperature of the fourth zone is 220 ℃, the temperature of the fifth zone is 220 ℃, the temperature of the sixth zone is 220 ℃, the temperature of the machine head is 220 ℃, and the rotating speed frequency of the main machine is 15HZ
Example 2
(1) Adding 2 parts of polyethylene wax, 35 parts of glass microspheres and 3 parts of sodium dodecyl benzene sulfonate into a mixer for mixing, wherein the mixing temperature is 120 ℃, the mixing speed is 100 r/min, and the mixing time is 1 min; and cooling to normal temperature, then adding 100 parts of polypropylene, 5 parts of polypropylene grafted maleic anhydride, 1 part of antioxidant 1010 and 1 part of antioxidant 168, mixing at the speed of 60 revolutions per minute for 3 minutes to obtain a mixture.
(2) And adding the mixture from a feed inlet of a double-screw extruder, and extruding and granulating to obtain the polypropylene composition.
In the step (2), the processing technology of the double-screw extruder is as follows: the temperature of the first zone is 200 ℃, the temperature of the second zone is 220 ℃, the temperature of the third zone is 230 ℃, the temperature of the fourth zone is 230 ℃, the temperature of the fifth zone is 230 ℃, the temperature of the sixth zone is 230 ℃, the temperature of the machine head is 230 ℃, and the rotating speed frequency of the main machine is 30 HZ.
Example 3
(1) Adding 1 part of polyethylene wax, 15 parts of glass microspheres and 2 parts of sodium dodecyl benzene sulfonate into a mixer for mixing, wherein the mixing temperature is 120 ℃, the mixing speed is 80 r/min, and the mixing time is 2 min; and cooling to normal temperature, then adding 100 parts of polypropylene, 4 parts of polypropylene grafted maleic anhydride, 0.08 part of antioxidant 1010 and 0.08 part of antioxidant 168, mixing at the speed of 100 revolutions per minute for 4 minutes to obtain a mixture.
(2) And adding the mixture from a feed inlet of a double-screw extruder, and extruding and granulating to prepare the polypropylene composition.
In the step (2), the processing technology of the double-screw extruder is as follows: the temperature of the first zone is 180 ℃, the temperature of the second zone is 210 ℃, the temperature of the third zone is 220 ℃, the temperature of the fourth zone is 220 ℃, the temperature of the fifth zone is 220 ℃, the temperature of the sixth zone is 220 ℃, the temperature of the machine head is 220 ℃, and the rotating speed frequency of the main machine is 25HZ
Example 4
(1) Adding 1 part of polyethylene wax, 25 parts of glass microspheres and 3 parts of sodium dodecyl benzene sulfonate into a mixer for mixing, wherein the mixing temperature is 110 ℃, the mixing speed is 70 r/min, and the mixing time is 1 min; and cooling to normal temperature, then adding 100 parts of polypropylene, 4 parts of polypropylene grafted maleic anhydride, 0.08 part of antioxidant 1010 and 0.08 part of antioxidant 168, mixing at the speed of 80 revolutions per minute for 4 minutes to obtain a mixture.
(2) And adding the mixture from a feed inlet of a double-screw extruder, and extruding and granulating to prepare the polypropylene composition.
In the step (2), the processing technology of the double-screw extruder is as follows: the temperature of the first zone is 180 ℃, the temperature of the second zone is 210 ℃, the temperature of the third zone is 220 ℃, the temperature of the fourth zone is 220 ℃, the temperature of the fifth zone is 230 ℃, the temperature of the sixth zone is 230 ℃, the temperature of the machine head is 220 ℃, and the rotating speed frequency of the main machine is 25HZ
Example 5
(1) Adding 1 part of polyethylene wax, 20 parts of glass microspheres and 3 parts of sodium dodecyl benzene sulfonate into a mixer for mixing, wherein the mixing temperature is 120 ℃, the mixing speed is 70 r/min, and the mixing time is 1 min; and cooling to normal temperature, then adding 100 parts of polypropylene, 4 parts of polypropylene grafted maleic anhydride, 0.08 part of antioxidant 1010 and 0.08 part of antioxidant 168, mixing at the speed of 80 revolutions per minute for 4 minutes to obtain a mixture.
(2) And adding the mixture from a feed inlet of a double-screw extruder, and extruding and granulating to prepare the polypropylene composition.
In the step (2), the processing technology of the double-screw extruder is as follows: the temperature of the first zone is 180 ℃, the temperature of the second zone is 210 ℃, the temperature of the third zone is 220 ℃, the temperature of the fourth zone is 220 ℃, the temperature of the fifth zone is 230 ℃, the temperature of the sixth zone is 230 ℃, the temperature of the machine head is 220 ℃, and the rotating speed frequency of the main machine is 25HZ
Comparative example 1
In comparison with example 5. Wherein, the common coupling agent KH550 is used for replacing sodium dodecyl benzene sulfonate, and other technical parameters are the same.
Comparative example 2
In comparison with example 5. Wherein, the common coupling agent KH570 is used for replacing sodium dodecyl benzene sulfonate, and other technical parameters are the same.
Comparative example 3
In comparison with example 5.
(1) Adding 1 part of polyethylene wax, 20 parts of glass microspheres, 3 parts of sodium dodecyl benzene sulfonate, 100 parts of polypropylene, 4 parts of polypropylene grafted maleic anhydride, 0.08 part of antioxidant 1010 and 0.08 part of antioxidant 168 into a mixer for mixing at a mixing speed of 80 revolutions per minute for 5 minutes to obtain a mixture.
(2) And adding the mixture from a feed inlet of a double-screw extruder, and extruding and granulating to obtain the polypropylene composition.
In the step (2), the processing technology of the double-screw extruder is as follows: the temperature of the first zone is 180 ℃, the temperature of the second zone is 210 ℃, the temperature of the third zone is 220 ℃, the temperature of the fourth zone is 220 ℃, the temperature of the fifth zone is 230 ℃, the temperature of the sixth zone is 230 ℃, the temperature of the machine head is 220 ℃, and the rotating speed frequency of the main machine is 25HZ
The mechanical property test method comprises the following steps:
the compositions prepared according to the invention were injection molded using ASTM standards. The spline dimensions (length × width × thickness) are: tensile bars (dumbbell type) 170mm by 13mm by 3.2 mm; notched impact bars, 127 mm. times.13 mm. times.3.2 mm, V-notches, notch depth 1/5.
Tensile strength: the tensile rate was 5mm/min as measured by ASTM D638.
Impact strength of the simply supported beam notch: testing according to ASTM D6110-2018.
The results of the performance tests are shown in Table 1
Table 1 results of performance testing
As can be seen from Table 1, the sodium dodecyl benzene sulfonate is added into the polypropylene as a treating agent, so that the polypropylene composite has better and excellent treating effect compared with common coupling agents KH550 and KH570 in the market, greatly enhances the interface binding capacity between the polypropylene and the glass microspheres, and can greatly improve the mechanical property of the polypropylene composite. The polypropylene composition injection molding part prepared by the invention has the characteristics of low density, light weight, excellent mechanical property and the like.
The embodiments described above are intended to facilitate one of ordinary skill in the art in understanding and using the present invention. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the embodiments described herein, and those skilled in the art should understand that they can make improvements and modifications without departing from the scope of the present invention.
Claims (6)
1. A glass microsphere filled polypropylene composition, which is characterized in that: the composition is prepared from the following components in parts by weight:
100 parts of polypropylene, namely 100 parts of polypropylene,
3-5 parts of polypropylene grafted maleic anhydride,
1-2 parts of polyethylene wax,
10-35 parts of glass microspheres,
1-3 parts of sodium dodecyl benzene sulfonate,
10100.05-0.1 part of antioxidant,
1680.05-0.1 part of antioxidant;
the preparation method of the glass microsphere filled polypropylene composition comprises the following steps:
(1) adding polyethylene wax, glass microspheres and sodium dodecyl benzene sulfonate into a mixer according to the proportion for primary mixing, wherein the mixing temperature is 100-; cooling to normal temperature, adding polypropylene, polypropylene grafted maleic anhydride, antioxidant 1010 and antioxidant 168, and mixing for the second time to obtain a mixture;
(2) and adding the mixture from a feed inlet of a double-screw extruder, and extruding and granulating to obtain the glass microsphere filled polypropylene composition.
2. The glass microsphere filled polypropylene composition according to claim 1, wherein: the melt index of the polypropylene under the conditions of 230 ℃ and 2.16kg is 20-30g/10 min.
3. The glass microsphere filled polypropylene composition according to claim 1, wherein: the melt index of the polypropylene grafted maleic anhydride at 230 ℃ and under the condition of 2.16kg is 40-60g/10 min.
4. The glass microsphere filled polypropylene composition according to claim 1, wherein: the polyethylene wax is white powder and has a particle size of 10-12 microns.
5. The glass microsphere filled polypropylene composition according to claim 1, wherein: in the step (1), the rotating speed of the mixer during the primary mixing is 60-100 r/min, and the mixing time is 1-2 min; the rotating speed of the mixer during the secondary mixing is 60-100 revolutions per minute, and the mixing time is 3-5 minutes.
6. The glass microsphere filled polypropylene composition according to claim 1, wherein: in the step (2), the processing technology of the double-screw extruder comprises the following steps: the temperature of the first zone is 180-200 ℃, the temperature of the second zone is 200-220 ℃, the temperature of the third zone is 220-230 ℃, the temperature of the fourth zone is 220-230 ℃, the temperature of the fifth zone is 220-230 ℃, the temperature of the sixth zone is 220-230 ℃, the temperature of the head is 220-230 ℃, and the rotation speed frequency of the host is 15-35 Hz.
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| CN113980385B (en) * | 2021-10-28 | 2023-02-17 | 金发科技股份有限公司 | Matte and scratch-resistant polypropylene composition and preparation method and application thereof |
| CN115093646B (en) * | 2022-08-25 | 2022-11-18 | 山东寿光鲁清石化有限公司 | Preparation method of high-strength cold-resistant aging-resistant polypropylene material |
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