CN115772296A - Multifunctional filling modified polypropylene master batch and preparation method and application thereof - Google Patents
Multifunctional filling modified polypropylene master batch and preparation method and application thereof Download PDFInfo
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Abstract
The invention belongs to the technical field of plastic filling modification, and particularly relates to a multifunctional filling modified polypropylene master batch, and a preparation method and application thereof. The invention takes three inorganic powders of talcum powder, wollastonite powder and montmorillonite powder as the filling powder of the multifunctional filling modified polypropylene master batch, and utilizes the lamellar structure of the talcum powder, the needle-shaped structure of wollastonite and the sheet-shaped structure of the montmorillonite powder to endow polypropylene with multiple excellent properties, improve the hardness, strength, flame retardance, wear resistance, creep resistance, dimensional stability, comprehensive mechanical and physical properties and the like of the polypropylene; meanwhile, the processing fluidity of the plastic particles can be improved by utilizing the smoothness of the talcum powder; the needle-shaped and sheet-shaped structures of the wollastonite powder and the montmorillonite powder can promote the plastic products to generate a skeleton and a carbonization effect during combustion, prevent external air from entering, prevent heat from releasing, and dehydrate the montmorillonite when the combustion temperature reaches 450 ℃, thereby achieving a good synergistic flame-retardant effect.
Description
Technical Field
The invention belongs to the technical field of plastic filling modification, and particularly relates to a multifunctional filling modified polypropylene master batch, and a preparation method and application thereof.
Background
The polypropylene is a plastic variety with the highest development speed, the yield of the polypropylene is second to that of polyethylene and polyvinyl chloride, and the polypropylene is widely applied to the fields of automobiles, household appliances, industrial parts and the like, such as automobile bumpers, instrument panels, fan blades, handles and the like, and has the shadow of polypropylene. However, like other common resins, the polypropylene material alone cannot meet the requirements of people on the performance, and therefore, researchers have focused on the functional modification of polypropylene to improve and enrich the performance. Among them, the multifunctional filling modified polypropylene masterbatch is an ideal modification method, and has been paid attention by researchers. In the multifunctional filling modified polypropylene master batch, people usually adopt inorganic powder fillers, such as calcium carbonate, talcum powder or mica powder, and the like, so as to improve the mechanical property of polypropylene and reduce the shrinkage rate of polypropylene in the process of processing, injection molding and forming, but the prepared functional filling polypropylene master batch still has single function.
The invention with the application number of 202110357214.4 discloses a high-uniformity polypropylene modified master batch and a preparation method thereof, wherein polypropylene, silicon dioxide, primary amide, a lubricant and an antioxidant are used as raw materials, and the prepared polypropylene modified master batch can only improve the uniformity of the material in the aspect of polypropylene performance and has a single function.
Therefore, how to prepare a multifunctional filling modified polypropylene master batch with rich functions is a problem faced by those skilled in the art.
Disclosure of Invention
The multifunctional filling modified polypropylene master batch provided by the invention can endow polypropylene with multiple excellent properties, and improves the hardness, strength, flame retardance, wear resistance, creep resistance, dimensional stability, processability and comprehensive mechanical and physical properties of the polypropylene.
In order to achieve the above purpose, the invention provides the following technical scheme:
the invention provides a multifunctional filling modified polypropylene master batch which is prepared from the following raw materials in parts by mass:
polypropylene resin: 10-30 parts;
inorganic composite powder: 60-90 parts;
titanate coupling agent: 2-8 parts;
zinc stearate: 3-6 parts;
lubricant: 1-4 parts;
antioxidant: 0.5-2 parts;
silane coupling agent: 0.48 to 0.99 portion.
Preferably, the inorganic composite powder comprises talc, wollastonite and montmorillonite powder; the mass ratio of the talc to the wollastonite to the montmorillonite powder is 1.
Preferably, the polypropylene resin comprises one or more of homo-polypropylene, block co-polypropylene and random co-polypropylene;
the titanate coupling agent comprises one or more of tristearyl isopropyl titanate, trimethacryloyl isopropyl titanate, triacryloyl isopropyl titanate, tri-o-aminobenzoyl isopropyl titanate, diacryloyl oxoacetyl titanate, diisopropylbenzoyl ethylene dioxy titanate, alcohol amine titanate and triethanolamine titanate;
the lubricant comprises one or more of polyethylene wax, polypropylene wax, stearic acid, oxidized polyethylene wax and solid paraffin;
the antioxidant comprises one or more of an antioxidant 1010, an antioxidant 1076 and an antioxidant 168;
the silane coupling agent comprises one or more of gamma-aminopropyl methyl dimethoxy silane, gamma-aminopropyl trimethoxy silane, gamma-divinyltriaminopropyl trimethoxy silane and gamma-aminopropyl methyl diethoxy silane.
Preferably, the particle size of the multifunctional filling modified polypropylene master batch is 2-4 mm.
Preferably, the particle size of the inorganic composite powder is 3 to 5 μm.
The invention also provides a preparation method of the multifunctional filling modified polypropylene master batch, which comprises the following steps:
mixing inorganic composite powder with a silane coupling agent to obtain modified inorganic composite powder;
and sequentially heating and mixing the modified inorganic composite powder, the polypropylene resin, the lubricant, the titanate coupling agent, the zinc stearate and the antioxidant, melting and extruding, cooling and granulating to obtain the multifunctional filling modified polypropylene master batch.
Preferably, the heating and mixing mode is that the heating and the stirring are carried out while the heating and the stirring are carried out; the heating and mixing temperature is 150-180 ℃, the stirring speed is 2000-2800 rpm, and the stirring time is 10-15 min.
Preferably, the melt extrusion temperature is 140 to 210 ℃.
Preferably, the inorganic composite powder and the silane coupling agent are mixed by stirring; the rotating speed of the stirring is 2000-2800 rpm.
The invention also provides application of the multifunctional filling modified polypropylene master batch or the multifunctional filling modified polypropylene master batch prepared by the preparation method in the scheme in modification of polypropylene resin.
The invention provides a multifunctional filling modified polypropylene master batch. The multifunctional filling modified polypropylene master batch provided by the invention can endow polypropylene with multiple excellent properties, and improve the hardness, strength, flame retardance, wear resistance, creep resistance, dimensional stability, processability and comprehensive mechanical and physical properties of the polypropylene. The invention takes three inorganic powders of talcum powder, wollastonite powder and montmorillonite powder as the filling powder of the multifunctional filling modified polypropylene master batch, and utilizes the lamellar structure of the talcum powder, the needle-shaped structure of wollastonite and the sheet-shaped structure of the montmorillonite powder to endow polypropylene with multiple excellent properties, improve the hardness, strength, flame retardance, wear resistance, creep resistance, dimensional stability, comprehensive mechanical and physical properties and the like of the polypropylene; meanwhile, the processing fluidity of the plastic particles can be improved by utilizing the smoothness of the talcum powder; the needle-shaped and sheet-shaped structures of the wollastonite powder and the montmorillonite powder can promote the plastic products to generate a skeleton and a carbonization effect during combustion, prevent external air from entering, prevent heat from releasing, and dehydrate the montmorillonite when the combustion temperature reaches 450 ℃, thereby achieving a good synergistic flame-retardant effect.
The invention also provides a preparation method of the multifunctional filling modified polypropylene master batch. According to the invention, the inorganic composite powder and the silane coupling agent are mixed for surface modification treatment, and after the polypropylene is modified by the inorganic composite powder subjected to the surface modification treatment, the impact strength of the material is not reduced, and the polypropylene has the outstanding advantages of good hardness, strength, rigidity, wear resistance, dimensional stability, synergistic flame retardance and the like, and is high in versatility.
The invention also provides application of the multifunctional filling modified polypropylene master batch or the multifunctional filling modified polypropylene master batch prepared by the preparation method in the scheme in modification of polypropylene resin. The multifunctional filling modified polypropylene master batch is used for modifying polypropylene resin, can endow polypropylene with multiple excellent properties, and improves the hardness, strength, flame retardance, wear resistance, creep resistance, dimensional stability, processability and comprehensive mechanical and physical properties of the polypropylene.
Detailed Description
The invention provides a multifunctional filling modified polypropylene master batch which is prepared from the following raw materials in parts by mass:
polypropylene resin: 10-30 parts;
inorganic composite powder: 60-90 parts;
titanate coupling agent: 2-8 parts;
zinc stearate: 3-6 parts;
lubricant: 1-4 parts;
antioxidant: 0.5-2 parts;
silane coupling agent: 0.48 to 0.99 portion.
Unless otherwise stated, all the raw materials used in the multifunctional filling modified polypropylene masterbatch are commercially available.
The multifunctional filling modified polypropylene master batch comprises, by mass, 10-30 parts of polypropylene resin, preferably 15-25 parts, and more preferably 20 parts; the polypropylene resin preferably comprises one or more of homo-polypropylene, block co-polypropylene and random co-polypropylene.
The multifunctional filling modified polypropylene master batch comprises 60-90 parts by mass of inorganic composite powder, preferably 70-80 parts by mass, and more preferably 75 parts by mass of polypropylene resin; the inorganic composite powder preferably comprises talc, wollastonite and montmorillonite powder; the mass ratio of the talc, the wollastonite and the montmorillonite powder is preferably 1; the particle size of the inorganic composite powder is preferably 3-5 μm, and more preferably 4 μm; the preparation method of the inorganic composite powder preferably comprises the following steps: respectively and sequentially carrying out coarse crushing, cleaning, crushing and grinding on talc, wollastonite and montmorillonite raw ores to obtain inorganic composite powder; the particle size of the crushed material is preferably 5-10 mm, and more preferably 7-9 mm; the grinding is preferably dry grinding; the dry grinding is preferably: conveying the crushed material to a 198 ring roller mill through a belt, adding a grinding aid at the inlet of the ring roller mill, respectively obtaining talc, wollastonite and montmorillonite powder after dry grinding, and mixing the obtained talc, wollastonite and montmorillonite powder to obtain inorganic composite powder; the grinding aid is preferably monoethanol diisopropanolamine; the addition amount of the grinding aid is preferably 5-7 per mill, and more preferably 6 per mill of the mass of talc, wollastonite or montmorillonite raw ore.
The multifunctional filling modified polypropylene master batch comprises 2-8 parts of titanate coupling agent, preferably 3-7 parts, more preferably 4-6 parts by mass of polypropylene resin; the titanate coupling agent preferably comprises one or more of isopropyl tristearyl titanate, isopropyl trimethacryloyl titanate, isopropyl triacryloyl titanate, isopropyl tri-o-aminobenzoyl titanate, diacryloyl oxoacetyl titanate, diisopropylbenzoyl ethylene dioxy titanate, alcohol amine titanate and triethanolamine titanate.
The multifunctional filling modified polypropylene master batch provided by the invention comprises 3-6 parts, preferably 4-5 parts of zinc stearate by mass of polypropylene resin.
The multifunctional filling modified polypropylene master batch provided by the invention comprises 1-4 parts of lubricant, preferably 2-3 parts by mass of polypropylene resin; the lubricant preferably comprises one or more of polyethylene wax, polypropylene wax, stearic acid, oxidized polyethylene wax and solid paraffin.
The multifunctional filling modified polypropylene master batch comprises 0.5-2 parts of antioxidant, preferably 1-1.5 parts by mass of polypropylene resin; the antioxidant preferably comprises one or more of antioxidant 1010, antioxidant 1076 and antioxidant 168.
The multifunctional filling modified polypropylene master batch provided by the invention comprises 0.48-0.99 part of silane coupling agent, preferably 0.55-0.85 part, more preferably 0.65-0.75 part by mass of polypropylene resin; the silane coupling agent preferably comprises one or more of gamma-aminopropylmethyldimethoxysilane, gamma-aminopropyltrimethoxysilane, gamma-diethylenetriaminopropyltrimethoxysilane and gamma-aminopropylmethyldiethoxysilane; the particle size of the multifunctional filling modified polypropylene master batch is preferably 2-4 mm, and more preferably 2-3 mm.
The invention also provides a preparation method of the multifunctional filling modified polypropylene master batch, which comprises the following steps:
mixing inorganic composite powder with a silane coupling agent to obtain modified inorganic composite powder;
and sequentially heating and mixing the modified inorganic composite powder, the polypropylene resin, the lubricant, the titanate coupling agent, the zinc stearate and the antioxidant, melting and extruding, cooling and granulating to obtain the multifunctional filling modified polypropylene master batch.
The invention mixes inorganic composite powder and silane coupling agent to obtain modified inorganic composite powder. In the present invention, the inorganic composite powder and the silane coupling agent are preferably mixed by stirring; the stirring speed is preferably 2000-2800 rpm, more preferably 2300-2600 rpm, and the stirring time is preferably 8-15 min, more preferably 10min; the stirring device is preferably a high-speed modifying machine. The inorganic composite powder is mixed with the silane coupling agent, so that the coupling agent is uniformly coated on the surface of the inorganic composite powder.
After the modified inorganic composite powder is obtained, the modified inorganic composite powder, the polypropylene resin, the lubricant, the titanate coupling agent, the zinc stearate and the antioxidant are sequentially heated, mixed, melted, extruded, cooled and granulated to obtain the multifunctional filling modified polypropylene master batch. In the present invention, the heating and mixing method is preferably stirring and mixing while heating; the temperature of the heating and mixing is preferably 150 to 180 ℃, more preferably 160 to 170 ℃, the rotating speed of the stirring is preferably 2000 to 2800rpm, more preferably 2200 to 2600rpm, and the stirring time is preferably 10 to 15min, more preferably 12 to 13min; the heating and mixing device is preferably a high-speed mixer; the cylinder temperature for the melt extrusion is preferably 140 to 210 ℃, more preferably 160 to 200 ℃, and still more preferably 170 to 180 ℃.
In the present invention, the apparatus for melt extrusion is preferably a twin-screw extruder; the length-diameter ratio of the double-screw extruder is preferably 48 to 52, more preferably 50, the screw rotating speed is preferably 250 to 350rpm, more preferably 280 to 320rpm; the twin-screw extruder is divided into 9 temperature zones: a first zone, a second zone, a third zone, a fourth zone, a fifth zone, a sixth zone, a seventh zone, an eighth zone and a ninth zone; the temperature of the first zone is preferably 110-130 ℃, and more preferably 120 ℃; the temperature of the second zone is preferably 170-185 ℃, and more preferably 180 ℃; the temperature of the three zones is preferably 180-190 ℃, more preferably 185 ℃, the temperature of the four zones is preferably 190-210 ℃, more preferably 200 ℃, the temperature of the five zones is preferably 190-210 ℃, more preferably 200 ℃, the temperature of the six zones is preferably 190-210 ℃, more preferably 205 ℃, the temperature of the seven zones is preferably 190-210 ℃, more preferably 205 ℃, and the temperature of the eight zones is preferably 200-220 ℃, more preferably 210 ℃; the temperature of the nine areas is preferably 200-220 ℃, and more preferably 210 ℃; the head temperature of the twin-screw extrusion is preferably 200-220 ℃, and more preferably 210 ℃; the feeding speed of the double-screw extruder is preferably 25-30 rpm, and more preferably 28rpm; the cooling mode is preferably air cooling; after the particles are cut, the obtained multifunctional filling modified polypropylene master batch is preferably packaged, so that the multifunctional filling modified polypropylene master batch can be better stored.
The invention also provides application of the multifunctional filling modified polypropylene master batch or the multifunctional filling modified polypropylene master batch prepared by the preparation method in the scheme in modification of polypropylene resin.
In the present invention, the application preferably comprises the steps of: and uniformly mixing the multifunctional filling modified polypropylene master batch and the polypropylene resin, and then performing melt extrusion to obtain the modified polypropylene resin. In the present invention, the mass ratio of the multifunctional filling-modified polypropylene base particle to the polypropylene resin is preferably 1 to 3.
In order to further illustrate the present invention, the following examples are given as illustrative embodiments of the present invention and should not be construed as limiting the scope of the present invention.
Example 1
And respectively carrying out dry grinding on talc, wollastonite and montmorillonite raw ores by adopting a ring roller mill, wherein the mass ratio of the three raw ores is 1:1:1, adding 5 per mill (mass fraction of talc, wollastonite or montmorillonite raw ore) of monoethanol diisopropanolamine grinding aid at an inlet of a ring roller mill, and grinding to obtain composite powder of talc, wollastonite and montmorillonite with the particle size of 5 mu m; carrying out surface modification treatment on the ground composite powder, wherein the surface modifier is a silane coupling agent gamma-aminopropyl methyldimethoxysilane with the mass of 8 per mill of the powder; weighing 70 parts of composite powder with well surface treated according to a formula, placing the composite powder into a mixer, adding 6 parts of titanate coupling agent isopropyl tristearyl titanate, heating to 110 ℃, stirring and treating for 3min at the rotating speed of 2000rpm, then sequentially adding 20 parts of copolymerized polypropylene, 2 parts of lubricant polyethylene wax, 4 parts of zinc stearate and 10101 parts of antioxidant, stirring and treating for 10min at the rotating speed of 2800rpm, then feeding into a double-screw extruder for plasticizing, mixing, extruding and granulating to obtain multifunctional filling modified polypropylene master batch with the inorganic powder content of 70%, wherein the temperature intervals of the double-screw extruder are respectively: 120 ℃ in the first zone, 180 ℃ in the second zone, 185 ℃ in the third zone, 200 ℃ in the fourth zone, 200 ℃ in the fifth zone, 205 ℃ in the sixth zone, 205 ℃ in the seventh zone, 210 ℃ in the eighth zone, 210 ℃ in the ninth zone, 210 ℃ in the head, a feeding speed of 28rpm, and a rotational speed of 300rpm in the extruder.
Example 2
And respectively carrying out dry grinding on talc, wollastonite and montmorillonite raw ores by adopting a ring roller mill, wherein the mass ratio of the three raw ores is 1:2:1, adding 6 per mill (mass fraction of talc, wollastonite or montmorillonite raw ore) of monoethanol diisopropanolamine grinding aid at an inlet of a ring roller mill, and grinding to obtain composite powder of talc, wollastonite and montmorillonite with the particle size of 5 mu m; carrying out surface modification treatment on the ground composite powder, wherein the surface modifier is a silane coupling agent gamma-aminopropyltrimethoxysilane of which the mass is 9 per mill of that of the powder; weighing 70 parts of composite powder with well surface treated according to a formula, placing the composite powder into a mixer, adding 6 parts of titanate coupling agent trimethyl acryloyl isopropyl titanate, heating to 110 ℃, stirring and treating for 3min at the rotating speed of 2000rpm, then sequentially adding 20 parts of copolymer polyacrylate, 2 parts of lubricant polypropylene wax, 4 parts of zinc stearate and 10761 parts of antioxidant, stirring and treating for 10min at the rotating speed of 2800rpm, then feeding into a double-screw extruder for plasticizing, mixing, extruding and granulating to obtain multifunctional filling modified polypropylene master batches with the inorganic powder content of 70%, wherein the temperature intervals of the double-screw extruder are respectively: 120 ℃ in the first zone, 180 ℃ in the second zone, 185 ℃ in the third zone, 200 ℃ in the fourth zone, 200 ℃ in the fifth zone, 205 ℃ in the sixth zone, 205 ℃ in the seventh zone, 210 ℃ in the eighth zone, 210 ℃ in the ninth zone, 210 ℃ in the head, a feeding speed of 28rpm, and a rotational speed of 300rpm in the extruder.
Example 3
And (2) respectively carrying out dry grinding on the talc, the wollastonite and the montmorillonite raw ore by adopting a ring roller mill, wherein the mass ratio of the three raw ores is 1:3:1, adding 7 per mill of monoethanol diisopropanolamine grinding aid (accounting for the mass fraction of talc, wollastonite or montmorillonite raw ore) at the inlet of the ring roller mill, and grinding to obtain composite powder of talc, wollastonite and montmorillonite with the particle size of 5 microns; carrying out surface modification treatment on the ground composite powder, wherein the surface modifier is silane coupling agent gamma-diethylenetriaminopropyltrimethoxysilane of which the mass is 11 per mill of that of the powder; weighing 70 parts of composite powder with well treated surface according to a formula, placing the composite powder into a mixer, adding 6 parts of titanate coupling agent isopropyl triacryloyl titanate, heating to 110 ℃, stirring at the rotating speed of 2000rpm for 3min, then sequentially adding 20 parts of copolymerized polyacrylate, 2 parts of lubricant stearic acid, 4 parts of zinc stearate and 1681 parts of antioxidant, stirring at the rotating speed of 2800rpm for 10min, then feeding into a double-screw extruder for plasticizing, mixing, extruding and granulating to obtain multifunctional filling modified polypropylene master batch with the inorganic powder content of 70%, wherein the temperature intervals of the double-screw extruder are respectively as follows: 120 ℃ in the first zone, 180 ℃ in the second zone, 185 ℃ in the third zone, 200 ℃ in the fourth zone, 200 ℃ in the fifth zone, 205 ℃ in the sixth zone, 205 ℃ in the seventh zone, 210 ℃ in the eighth zone, 210 ℃ in the ninth zone, 210 ℃ in the head, the feeding speed of 28rpm, and the rotation speed of the extruder of 300rpm.
Comparative example 1
Carrying out dry grinding on calcium carbonate raw ore by adopting a ring roller mill, adding 6 per mill (mass fraction of talc, wollastonite or montmorillonite raw ore) of monoethanol diisopropanolamine grinding aid at an inlet of the ring roller mill, and grinding to obtain calcium carbonate powder with the particle size of 5 mu m; carrying out surface modification treatment on the ground composite powder, wherein the surface modifier is a silane coupling agent gamma-aminopropyl methyldimethoxysilane with the mass of 9 per mill of the powder; weighing 70 parts of composite powder with well treated surface according to a formula, placing the composite powder into a mixer, adding 6 parts of titanate coupling agent isopropyl tristearyl titanate, heating to 110 ℃, stirring and treating for 3min at the rotating speed of 2000rpm, then sequentially adding 20 parts of copolymerized polyacrylate, 2 parts of lubricant polyethylene wax, 4 parts of zinc stearate and 10101 parts of antioxidant, stirring and treating for 10min at the rotating speed of 2800rpm, then feeding into a double-screw extruder for plasticizing, mixing, extruding and granulating to obtain the multifunctional filling modified polypropylene master batch with the inorganic powder content of 70%, wherein the temperature intervals of the double-screw extruder are respectively: 120 ℃ in the first zone, 180 ℃ in the second zone, 185 ℃ in the third zone, 200 ℃ in the fourth zone, 200 ℃ in the fifth zone, 205 ℃ in the sixth zone, 205 ℃ in the seventh zone, 210 ℃ in the eighth zone, 210 ℃ in the ninth zone, 210 ℃ in the head, the feeding speed of 28rpm, and the rotation speed of the extruder of 300rpm.
The multifunctional filling modified polypropylene master batches prepared in the embodiments 1 to 3 and the comparative example 1 are processed into standard sample strips according to the proportion of the matrix resin (PP) to the multifunctional filling modified polypropylene master batch of 2.
TABLE 1 results of Performance test of examples 1 to 3 and comparative example 1
| Performance of | Example 1 | Example 2 | Example 3 | Comparative example 1 |
| Impact strength kJ/m 2 | 6.7 | 6.8 | 7.1 | 5.3 |
| Tensile strength MPa | 48.2 | 48.8 | 49.1 | 32.3 |
| Elongation at break% | 62.5 | 64.8 | 66.4 | 37.4 |
| Flexural strength MPa | 39.5 | 39.8 | 39.8 | 29.8 |
| Flexural modulus GPa | 0.82 | 0.83 | 0.85 | 0.56 |
| Oxygen index% | 24.5 | 24.4 | 24.4 | 24.1 |
As is clear from Table 1, the present invention uses talc, wollastonite and raw montmorillonite as raw materials, and comparative example 1 uses raw calcium carbonate as a raw material. Compared with the multifunctional filling modified polypropylene master batch of comparative example 1, the multifunctional filling modified polypropylene master batches prepared in the embodiments 1 to 3 of the present invention can significantly improve the mechanical properties of the resin, especially tensile strength, elongation at break and bending strength, and thus, the multifunctional filling modified polypropylene master batches provided by the present invention have a more prominent effect on improving the toughness of the polypropylene resin; in addition, the multifunctional filling modified polypropylene master batch also has a certain effect of improving the flame retardance of the polypropylene resin.
The examples show that the multifunctional filling modified polypropylene master batch provided by the invention can endow polypropylene with multiple excellent performances, improve the impact strength, tensile strength, elongation at break, bending strength and oxygen index of the polypropylene, and has excellent comprehensive mechanical physical properties and flame retardant property.
Although the present invention has been described in detail with reference to the above embodiments, it is only a part of the embodiments of the present invention, not all of the embodiments, and other embodiments can be obtained without inventive step according to the embodiments, and all of the embodiments belong to the protection scope of the present invention.
Claims (10)
1. The multifunctional filling modified polypropylene master batch is characterized by being prepared from the following raw materials in parts by mass:
polypropylene resin: 10-30 parts;
inorganic composite powder: 60-90 parts;
titanate coupling agent: 2-8 parts of a solvent;
zinc stearate: 3-6 parts;
lubricant: 1-4 parts;
antioxidant: 0.5-2 parts;
silane coupling agent: 0.48 to 0.99 portion.
2. The multifunctional filling modified polypropylene masterbatch according to claim 1, wherein the inorganic composite powder comprises talc, wollastonite and montmorillonite powder; the mass ratio of the talc to the wollastonite to the montmorillonite powder is 1 to 1.
3. The multifunctional filling modified polypropylene masterbatch according to claim 1, wherein the polypropylene resin comprises one or more of homo-polypropylene, block co-polypropylene and random co-polypropylene;
the titanate coupling agent comprises one or more of tristearyl isopropyl titanate, trimethacryloyl isopropyl titanate, triacryloyl isopropyl titanate, tri-o-aminobenzoyl isopropyl titanate, diacryloyl oxoacetyl titanate, diisopropylbenzoyl ethylene dioxy titanate, alcohol amine titanate and triethanolamine titanate;
the lubricant comprises one or more of polyethylene wax, polypropylene wax, stearic acid, oxidized polyethylene wax and solid paraffin;
the antioxidant comprises one or more of antioxidant 1010, antioxidant 1076 and antioxidant 168;
the silane coupling agent comprises one or more of gamma-aminopropylmethyldimethoxysilane, gamma-aminopropyltrimethoxysilane, gamma-diethylenetriaminopropyltrimethoxysilane and gamma-aminopropylmethyldiethoxysilane.
4. The multifunctional filling modified polypropylene masterbatch according to claim 1, wherein the multifunctional filling modified polypropylene masterbatch has a particle size of 2-4 mm.
5. The multifunctional filling modified polypropylene masterbatch according to claim 1 or 2, wherein the particle size of the inorganic composite powder is 3 to 5 μm.
6. The preparation method of the multifunctional filling modified polypropylene master batch of any one of claims 1 to 5, comprising the following steps:
mixing inorganic composite powder with a silane coupling agent to obtain modified inorganic composite powder;
and sequentially heating and mixing the modified inorganic composite powder, the polypropylene resin, the lubricant, the titanate coupling agent, the zinc stearate and the antioxidant, melting and extruding, cooling and granulating to obtain the multifunctional filling modified polypropylene master batch.
7. The production method according to claim 6, wherein the heating and mixing are carried out by stirring while heating; the temperature of the heating and mixing is 150-180 ℃, the rotating speed of the stirring is 2000-2800 rpm, and the stirring time is 10-15 min.
8. The method of claim 6, wherein the melt extrusion temperature is 140 to 210 ℃.
9. The preparation method according to claim 6, wherein the inorganic composite powder and the silane coupling agent are mixed by stirring; the stirring speed is 2000-2800 rpm.
10. Use of the multifunctional filling modified polypropylene masterbatch according to any one of claims 1 to 5 or the multifunctional filling modified polypropylene masterbatch obtained by the preparation method according to any one of claims 6 to 9 in modification of polypropylene resin.
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