CN113150451A - Preparation method and application of whisker modified polypropylene blend material - Google Patents
Preparation method and application of whisker modified polypropylene blend material Download PDFInfo
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- CN113150451A CN113150451A CN202110459159.XA CN202110459159A CN113150451A CN 113150451 A CN113150451 A CN 113150451A CN 202110459159 A CN202110459159 A CN 202110459159A CN 113150451 A CN113150451 A CN 113150451A
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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
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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
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Abstract
The invention relates to the technical field of high molecular compounds, and discloses an application of a whisker modified polypropylene blending material, which comprises the following raw materials in parts by weight: 65-69% of polypropylene (15-17% of homopolymerized polypropylene, 50-52% of copolymerized polypropylene), 4.5-5.5% of talcum powder (3000 meshes), 9-11% of magnesium sulfate whisker, 16-18% of rubber, 0.15-0.25% of ultraviolet-resistant stabilizer (cas.52829-07-9), 0.05-0.15% of antioxidant (cas.6683-19-8), 0.025-0.075% of antioxidant (cas.31570-04-4), 0.15-0.25% of calcium stearate lubricant (cas.1523-23-0) and 0.1-0.2% of pure carbon black, so that the lightweight material with lower density and cost is obtained.
Description
Technical Field
The invention relates to the technical field of high molecular compounds, in particular to a preparation method and application of a whisker modified polypropylene blend material.
Background
The whisker is a micro-nano short fiber grown by high-purity single crystal, has the advantages of high strength, high modulus and high elongation, the polypropylene is a polymer prepared by propylene through addition polymerization, the polypropylene (PP) has low price and easy processing, in addition, the density of the polypropylene (PP) is lower, the chemical corrosion resistance is higher, the physical and mechanical properties are superior, the lightweight development of automobiles is already the mainstream at present due to the requirement of environmental protection, the existing automobile interior and exterior decoration materials are mainly concentrated in the formula of PP + POE + TD20, but the cost of the automobile interior and exterior decoration materials is higher at present, because the existing automobile interior and exterior decoration materials are mostly produced by blending high-performance talcum powder or rubber, the filling of the filler is higher, the density and the quality of the automobile interior and exterior decoration materials are higher, in addition, some automobile interior and exterior decoration materials have excellent modulus but do not have impact resistance, and the balance improvement aspect of the rigidity and the toughness of the polypropylene materials is not reflected, the modulus and the impact property of some interior and exterior materials are excellent, but the lightweight of the materials is not reflected by adopting the materials with higher density, so that the existing interior and exterior materials for automobiles cannot meet the requirement of keeping high rigidity of the materials under the condition of low density or have rigidity-toughness balance under the condition of excellent modulus and impact resistance, and therefore, the preparation method and the application of the whisker modified polypropylene blend material with low cost and high rigidity and toughness of the composite material are provided.
Disclosure of Invention
In order to realize the purposes of low cost and high rigidity and toughness of the composite material, the invention provides the following technical scheme: the whisker modified polypropylene blend material comprises the following raw materials in proportion: 65-69% of polypropylene (15-17% of homopolymerized polypropylene, 50-52% of copolymerized polypropylene), 4.5-5.5% of talcum powder (3000 meshes), 9-11% of magnesium sulfate whisker, 16-18% of rubber, 0.15-0.25% of ultraviolet-resistant stabilizer (cas.52829-07-9), 0.05-0.15% of antioxidant (cas.6683-19-8), 0.025-0.075% of antioxidant (cas.31570-04-4), 0.15-0.25% of calcium stearate lubricant (cas.1523-23-0) and 0.1-0.2% of pure carbon black.
The preparation method of the whisker modified polypropylene blend material application is provided based on the whisker modified polypropylene blend material application, and comprises the following steps:
step (1): weighing various raw materials according to a proportion, forming one part of each raw material, and then mixing 9% -11% of magnesium sulfate whisker and 0.15% -0.25% of 20% of calcium stearate lubricant in a first high-speed mixer for 6-10 minutes;
step (2): putting 85% of mixture of 9-11% of magnesium sulfate whisker and 0.15-0.25% of calcium stearate lubricant in the step (1) and 4.5-5.5% of 3000-mesh talcum powder into a second high-speed mixer for mixing for 6-10 minutes, then adding 0.15-0.25% of 30% of calcium stearate lubricant and 0.025-0.075% of antioxidant (cas.31570-04-4), and continuing to mix for 20-25 minutes;
and (3): adding 15-17% of homopolymerized polypropylene, 16-18% of 50% of rubber and 0.15-0.25% of 10% of calcium stearate lubricant into the second high-speed mixer in the step (2) and mixing for 9-15 minutes;
and (4): adding 0.05-0.15% of antioxidant (cas.6683-19-8) into the second high-speed mixer in the step (3) for mixing for 4-10 minutes, and then adding 50-52% of polypropylene copolymer, 16-18% of rubber and 0.15-0.25% of 10% of calcium stearate lubricant into the mixture for mixing for 20-30 minutes;
and (5): adding the mixture obtained in the step (4), 0.15% -0.25% of ultraviolet-resistant stabilizer (cas.52829-07-9) and the rest 15% of mixture obtained in the step (1) into a first high-speed mixer together, mixing for 9-15 minutes, adding 0.15% -0.25% of 10% calcium stearate lubricant, and continuing mixing for 20-30 minutes;
and (6): adding all the obtained mixtures and 0.1-0.2% of pure carbon black into a first high-speed mixer, mixing for 4-10 minutes, adding 0.15-0.25% of the rest 20% of calcium stearate lubricant, and continuously mixing for 20-30 minutes;
and (7): and adding the mixture into a double-screw extruder from a main feeding port, and performing extrusion granulation to obtain the whisker modified polypropylene blending material.
For optimization, the specification of the magnesium sulfate whisker is as follows: the molecular formula is MgSO4 & 5Mg (OH)2 & 3H2O, the average length is 4-90 μm, the diameter is 1.5 μm, the length-diameter ratio is 33, the purity is 97%, and the bulk density is 0.22g/cm3The microstructure is needle-like.
For optimization, the temperature of the heating section of the double-screw extruder is 200 ℃, 205 ℃, 210 ℃, 215 ℃, 220 ℃ and 225 ℃, the temperature of the head is 200 ℃, and the rotating speed of the double-screw extruder is 225 r/min.
In the optimization, the whiskers are added from the main feeding port without adopting a side feeding device in the production process.
Preferably, the rotating speed of the first high-speed mixer is 250r/min, the rotating speed of the second high-speed mixer is 200r/min, and the temperatures are 60 ℃ and 70 ℃ respectively.
The invention has the beneficial effects that: the blended material obtained by the preparation method and the application of the whisker modified polypropylene blended material has low density, low shrinkage and good surface gloss, is beneficial to reducing the weight of automotive interior and exterior trim materials, optimizes the compounding ratio of the whiskers and the talcum powder, and keeps good physical properties of the material on the premise of lower total adding ratio.
The preparation method and the application of the whisker modified polypropylene blend material have the advantages that the modulus and the impact both reach considerable indexes, the 3000-mesh talcum powder is selected, the manufacturing cost is greatly reduced, the filling proportion of the filler is adjusted, and the lightweight material with lower density is obtained.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows:
the whisker modified polypropylene blend material comprises the following raw materials in proportion: 65% of polypropylene (15% of homo-polypropylene, 50% of co-polypropylene), 4.5% of talcum powder (3000 meshes), 9% of magnesium sulfate whisker, 16% of rubber, 0.15% of ultraviolet-resistant stabilizer (cas.52829-07-9), 0.05% of antioxidant (cas.6683-19-8), 0.025% of antioxidant (cas.31570-04-4), 0.15% of calcium stearate lubricant (cas.1523-23-0) and 0.1% of pure carbon black.
The preparation method of the whisker modified polypropylene blend material is provided based on the application of the whisker modified polypropylene blend material, and comprises the following steps:
step (1): weighing the raw materials in proportion, wherein the raw materials are respectively prepared into one portion, and then mixing 9% of magnesium sulfate whisker and 0.15% of 20% of calcium stearate lubricant in a first high-speed mixer for 6 minutes;
step (2): putting 85% of mixture of 9% of magnesium sulfate whisker and 0.15% of calcium stearate lubricant in the step (1) and 4.5% of 3000-mesh talcum powder into a second high-speed mixer for mixing for 6 minutes, then adding 0.15% of 30% of calcium stearate lubricant and 0.025% of antioxidant (cas.31570-04-4), and continuing mixing for 20 minutes;
and (3): adding 15% of homo-polypropylene, 16% of 50% of rubber and 0.15% of 10% of calcium stearate lubricant into the second high-speed mixer in the step (2) and mixing for 9 minutes;
and (4): adding 0.05% of antioxidant (cas.6683-19-8) into the No. two high-speed mixer in the step (3) for mixing for 4 minutes, and adding 50% of polypropylene copolymer, 16% of rubber and 0.15% of 10% of calcium stearate lubricant for mixing for 20 minutes;
and (5): adding the mixture obtained in the step (4), 0.15% of ultraviolet-resistant stabilizer (cas.52829-07-9) and the rest 15% of mixture obtained in the step (1) into a first high-speed mixer, mixing for 9 minutes, adding 10% of calcium stearate lubricant 0.15%, and continuing to mix for 20 minutes;
and (6): adding all the obtained mixtures and 0.1 percent of pure carbon black into a first high-speed mixer for mixing for 4 minutes, then adding 0.15 percent of the rest 20 percent of calcium stearate lubricant and continuing mixing for 20 minutes;
and (7): and adding the mixture into a double-screw extruder from a main feeding port, and performing extrusion granulation to obtain the whisker modified polypropylene blending material.
Example two:
the whisker modified polypropylene blend material comprises the following raw materials in proportion: 67% of polypropylene (16% of homo-polypropylene, 51% of co-polypropylene), 5% of talcum powder (3000 meshes), 10% of magnesium sulfate whisker, 17% of rubber, 0.2% of ultraviolet-resistant stabilizer (cas.52829-07-9), 0.1% of antioxidant (cas.6683-19-8), 0.05% of antioxidant (cas.31570-04-4), 0.2% of calcium stearate lubricant (cas.1523-23-0) and 0.15% of pure carbon black.
The preparation method of the whisker modified polypropylene blend material is provided based on the application of the whisker modified polypropylene blend material, and comprises the following steps:
step (1): weighing the raw materials in proportion, wherein the raw materials are respectively prepared into one portion, and then mixing 10% of magnesium sulfate whisker and 0.2% of 20% of calcium stearate lubricant in a first high-speed mixer for 8 minutes;
step (2): putting a 85% mixture of 10% of magnesium sulfate whisker and 0.2% of calcium stearate lubricant in the step (1) and 5% of 3000-mesh talcum powder into a No. two high-speed mixer for mixing for 8 minutes, then adding 0.2% of 30% of calcium stearate lubricant and 0.05% of antioxidant (cas.31570-04-4), and continuing mixing for 23 minutes;
and (3): adding 16% of homo-polypropylene, 17% of 50% of rubber and 0.2% of 10% of calcium stearate lubricant into the second high-speed mixer in the step (2) and mixing for 12 minutes;
and (4): adding 0.1% of antioxidant (cas.6683-19-8) into the No. two high-speed mixer in the step (3) for mixing for 7 minutes, and adding 51% of polypropylene copolymer, 17% of rubber and 0.2% of 10% of calcium stearate lubricant for mixing for 25 minutes;
and (5): adding the mixture obtained in the step (4), 0.2% of ultraviolet-resistant stabilizer (cas.52829-07-9) and the rest 15% of mixture obtained in the step (1) into a first high-speed mixer, mixing for 12 minutes, adding 10% of calcium stearate lubricant 0.2%, and continuing to mix for 25 minutes;
and (6): adding all the obtained mixtures and 0.15 percent of pure carbon black into a first high-speed mixer, mixing for 7 minutes, adding the rest 20 percent of calcium stearate lubricant 0.2 percent, and continuing mixing for 25 minutes;
and (7): and adding the mixture into a double-screw extruder from a main feeding port, and performing extrusion granulation to obtain the whisker modified polypropylene blending material.
Example three;
the whisker modified polypropylene blend material comprises the following raw materials in proportion: 69% of polypropylene (17% of homo-polypropylene, 52% of co-polypropylene), 5.5% of talcum powder (3000 meshes), 11% of magnesium sulfate whisker, 18% of rubber, 0.25% of ultraviolet-resistant stabilizer (cas.52829-07-9), 0.15% of antioxidant (cas.6683-19-8), 0.075% of antioxidant (cas.31570-04-4), 0.25% of calcium stearate lubricant (cas.1523-23-0) and 0.2% of pure carbon black.
The preparation method of the whisker modified polypropylene blend material application is provided based on the whisker modified polypropylene blend material application, and comprises the following steps:
step (1): weighing the raw materials in proportion, wherein the raw materials are respectively prepared into one portion, and then mixing 11% of magnesium sulfate whisker and 0.25% of 20% of calcium stearate lubricant in a first high-speed mixer for 10 minutes;
step (2): putting a 85% mixture of 11% of magnesium sulfate whisker and 0.25% of calcium stearate lubricant in the step (1) and 5.5% of 3000-mesh talcum powder into a second high-speed mixer for mixing for 10 minutes, then adding 0.25% of 30% of calcium stearate lubricant and 0.075% of antioxidant (cas.31570-04-4), and continuing mixing for 25 minutes;
and (3): adding 17% of homo-polypropylene, 18% of 50% of rubber and 0.25% of 10% of calcium stearate lubricant into the second high-speed mixer in the step (2) and mixing for 15 minutes;
and (4): adding 0.15% of antioxidant (cas.6683-19-8) into the No. two high-speed mixer in the step (3) for mixing for 10 minutes, and adding 52% of polypropylene copolymer, 18% of rubber and 0.25% of 10% of calcium stearate lubricant for mixing for 30 minutes;
and (5): adding the mixture obtained in the step (4), 0.25% of ultraviolet-resistant stabilizer (cas.52829-07-9) and the rest 15% of mixture obtained in the step (1) into a first high-speed mixer, mixing for 15 minutes, adding 10% of calcium stearate lubricant 0.25%, and continuing mixing for 30 minutes;
and (6): adding all the obtained mixtures and 0.2 percent of pure carbon black into a first high-speed mixer for mixing for 10 minutes, then adding the rest 20 percent of calcium stearate lubricant 0.25 percent, and continuing mixing for 30 minutes;
and (7): and adding the mixture into a double-screw extruder from a main feeding port, and performing extrusion granulation to obtain the whisker modified polypropylene blending material.
In conclusion, the whisker modified polypropylene blend material prepared by the preparation method and the application thereof has low density, low shrinkage and good surface gloss, is beneficial to reducing the weight of automotive interior and exterior trim materials, optimizes the compounding ratio of the whiskers and the talcum powder, and keeps good physical properties of the material on the premise of lower total addition ratio; not only modulus and impact all reach considerable index, and chooseed the talcum powder that mesh number is 3000 for manufacturing cost's greatly reduced has adjusted the filling proportion of filler simultaneously, has obtained the lightweight material that density is lower.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical scope of the present invention and the equivalent alternatives or modifications according to the technical solution and the inventive concept of the present invention within the technical scope of the present invention.
Claims (6)
1. The whisker modified polypropylene blend material comprises the following raw materials in proportion: 65-69% of polypropylene (15-17% of homopolymerized polypropylene, 50-52% of copolymerized polypropylene), 4.5-5.5% of talcum powder (3000 meshes), 9-11% of magnesium sulfate whisker, 16-18% of rubber, 0.15-0.25% of ultraviolet-resistant stabilizer (cas.52829-07-9), 0.05-0.15% of antioxidant (cas.6683-19-8), 0.025-0.075% of antioxidant (cas.31570-04-4), 0.15-0.25% of calcium stearate lubricant (cas.1523-23-0) and 0.1-0.2% of pure carbon black.
2. The use of a whisker modified polypropylene blend material according to claim 1, for which a method for preparing a whisker modified polypropylene blend material is proposed, comprising the steps of:
step (1): weighing various raw materials according to a proportion, forming one part of each raw material, and then mixing 9% -11% of magnesium sulfate whisker and 0.15% -0.25% of 20% of calcium stearate lubricant in a first high-speed mixer for 6-10 minutes;
step (2): putting 85% of mixture of 9-11% of magnesium sulfate whisker and 0.15-0.25% of calcium stearate lubricant in the step (1) and 4.5-5.5% of 3000-mesh talcum powder into a second high-speed mixer for mixing for 6-10 minutes, then adding 0.15-0.25% of 30% of calcium stearate lubricant and 0.025-0.075% of antioxidant (cas.31570-04-4), and continuing to mix for 20-25 minutes;
and (3): adding 15-17% of homopolymerized polypropylene, 16-18% of 50% of rubber and 0.15-0.25% of 10% of calcium stearate lubricant into the second high-speed mixer in the step (2) and mixing for 9-15 minutes;
and (4): adding 0.05-0.15% of antioxidant (cas.6683-19-8) into the second high-speed mixer in the step (3) for mixing for 4-10 minutes, and then adding 50-52% of polypropylene copolymer, 16-18% of rubber and 0.15-0.25% of 10% of calcium stearate lubricant into the mixture for mixing for 20-30 minutes;
and (5): adding the mixture obtained in the step (4), 0.15% -0.25% of ultraviolet-resistant stabilizer (cas.52829-07-9) and the rest 15% of mixture obtained in the step (1) into a first high-speed mixer together, mixing for 9-15 minutes, adding 0.15% -0.25% of 10% calcium stearate lubricant, and continuing mixing for 20-30 minutes;
and (6): adding all the obtained mixtures and 0.1-0.2% of pure carbon black into a first high-speed mixer, mixing for 4-10 minutes, adding 0.15-0.25% of the rest 20% of calcium stearate lubricant, and continuously mixing for 20-30 minutes;
and (7): and adding the mixture into a double-screw extruder from a main feeding port, and performing extrusion granulation to obtain the whisker modified polypropylene blending material.
3. The use of a whisker modified polypropylene blend material according to claim 1, characterized in that: specification of magnesium sulfate whisker: the molecular formula is MgSO4 & 5Mg (OH)2 & 3H2O, the average length is 4-90 μm, the diameter is 1.5 μm, the length-diameter ratio is 33, the purity is 97%, and the bulk density is 0.22g/cm3The microstructure is needle-like.
4. The preparation method of the whisker modified polypropylene blend material as claimed in claim 2, wherein the preparation method comprises the following steps: the temperature of the heating zone of the twin-screw extruder was 200 ℃, 205 ℃, 210 ℃, 215 ℃, 220 ℃ and 225 ℃, the temperature of the head was 200 ℃, and the rotation speed of the twin-screw extruder was 225 r/min.
5. The preparation method of the whisker modified polypropylene blend material as claimed in claim 2, wherein the preparation method comprises the following steps: in the production process, the whiskers are added from the main feeding port without adopting a side feeding device.
6. The preparation method of the whisker modified polypropylene blend material as claimed in claim 2, wherein the preparation method comprises the following steps: the rotating speed of the first high-speed mixer is 250r/min, the rotating speed of the second high-speed mixer is 200r/min, and the temperatures are 60 ℃ and 70 ℃ respectively.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115651308A (en) * | 2022-09-23 | 2023-01-31 | 攸县双银塑业有限责任公司 | Improved plastic material based on PP plastic |
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