CN114736456A - Polypropylene composition and preparation method and application thereof - Google Patents
Polypropylene composition and preparation method and application thereof Download PDFInfo
- Publication number
- CN114736456A CN114736456A CN202210297040.1A CN202210297040A CN114736456A CN 114736456 A CN114736456 A CN 114736456A CN 202210297040 A CN202210297040 A CN 202210297040A CN 114736456 A CN114736456 A CN 114736456A
- Authority
- CN
- China
- Prior art keywords
- polypropylene composition
- parts
- polypropylene
- nucleating agent
- talcum powder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
-
- 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
- C08K2201/016—Additives defined by their aspect ratio
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
-
- 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
- C08L2205/24—Crystallisation aids
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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 discloses a polypropylene composition and a preparation method and application thereof, belonging to the technical field of high molecular polymers. The polypropylene composition comprises the following components in parts by weight: 40-58 parts of polypropylene, 13-26 parts of a toughening agent, 25-40 parts of talcum powder, 1-6 parts of basic magnesium sulfate whisker, 0.1-0.4 part of a nucleating agent and 0-1 part of other additives. According to the polypropylene composition, the talcum powder with high length-diameter ratio is added, and the basic magnesium sulfate whisker is properly added, so that the linear expansion coefficient of the polypropylene composite material is obviously reduced, and the dimensional stability of the material is improved. The polypropylene composition adopts the synergistic effect of the specific nucleating agent and the talcum powder component with high length-diameter ratio to improve the crystallinity of the material, remarkably improves the adhesive performance of the polypropylene composition, controls the damage ratio of the surface layer of the base material to be 0 percent, and meets the application requirement in the preparation of automobile and household appliance parts because the adhesive shear strength can reach more than 3.32 MPa.
Description
Technical Field
The invention relates to the technical field of high molecular polymers, and particularly relates to a polypropylene composition and a preparation method and application thereof.
Background
Polypropylene (PP) has the advantages of low density, easy processing, excellent mechanical property and the like, and is widely applied to the fields of automobile industry, household appliances and machinery. For the automotive industry, polypropylene is mainly used for interior and exterior parts of automobiles, such as instrument panels, door panels, pillars and the like, and exterior parts such as bumpers, fenders, deflectors and the like. With the annual advance of energy conservation and emission reduction and light weight of automobiles, the design scheme of full resinification of the resin tail door and the door outer plate is also provided, so that the development of the polypropylene with the low linear expansion coefficient becomes a new hot door field.
In order to reduce the linear expansion coefficient of polypropylene materials, long glass fiber reinforced PP materials LFT-PP have been developed, which have a low linear expansion coefficient, high strength and strong damage resistance, and are generally used as structural support members, such as new energy car body cover inner plate frameworks and rear tail door inner plate frameworks. However, the outer plate material is generally selected from mineral filled PP to meet the requirement of appearance, and the linear expansion coefficient of the outer plate material is close to that of the long glass fiber reinforced material in order to be well assembled with the long glass fiber reinforced material of the inner plate, so that the outer plate material is required to be low in linear expansion coefficient of PP. And certain adhesive strength performance is required to be ensured in specific application, so that the application requirements in the fields of rear tail door inner plate frameworks and the like can be met.
The prior art discloses a polypropylene composition with low linear expansion coefficient, which comprises the following components in percentage by weight: 40-70% of polypropylene resin, 10-30% of elastomer, 5-30% of high-length-diameter-ratio filler, 0-20% of other inorganic fillers, 0.5-10% of compatilizer and 0.05-5% of other additives. The polypropylene composition is reinforced by filling inorganic filler with high length-diameter ratio (HAR) or by compounding, filling and reinforcing the inorganic filler with high length-diameter ratio and common inorganic filler, and then adding a compatilizer for composite modification, wherein a plastic part formed by injection molding of the obtained polypropylene composition has low linear expansion coefficient, shows good dimensional stability in high and low temperature circulation, and a workpiece has nearly equal linear expansion coefficient along the injection molding flow direction (FD or MD) and the vertical injection molding flow direction (TD). The polypropylene composition with low linear expansion coefficient improves the dimensional stability of the polypropylene composition, but does not improve the viscose performance of the polypropylene material.
Disclosure of Invention
The invention aims to overcome the defects and defects of poor dimensional stability and viscose performance of the existing polypropylene composition, and provides the polypropylene composition, which improves the dimensional stability and the viscose performance of the polypropylene composition through the synergistic effect of specially adding the components such as basic magnesium sulfate whisker, a toughening agent, a nucleating agent and the like.
Another object of the present invention is to provide a process for the preparation of a polypropylene composition.
The invention further aims to provide application of the polypropylene composition in preparation of parts of automobiles and household electrical appliances.
The above purpose of the invention is realized by the following technical scheme:
the polypropylene composition comprises the following components in parts by weight:
40-58 parts of polypropylene, 13-26 parts of toughening agent, 25-40 parts of talcum powder, 1-6 parts of basic magnesium sulfate whisker, 0.1-0.4 part of nucleating agent and 0-1 part of other additives,
wherein the melt mass flow rate of the polypropylene is 70-150 g/10min under the load of 2.16kg at 230 ℃, and the detection standard is ISO 1133-1-2011;
the mass flow rate of the melt of the toughening agent is 0.5-6 g/10min at 190 ℃ under the load of 2.16kg, the detection standard is ASTM D1238-2013,
the length-diameter ratio of the talcum powder is more than or equal to 10: 1.
Among them, it should be noted that:
the weight parts of the components in the polypropylene composition of the invention are also of great importance, and the linear expansion coefficient of the polypropylene composition is obviously reduced when the content of the talcum powder is increased. The basic magnesium sulfate whisker belongs to an inorganic filler, has low linear expansion coefficient, higher length-diameter ratio and specific surface area, higher contact area with PP, and can limit the size change of the PP at the periphery when the temperature changes, thereby being beneficial to synergistically reducing the linear expansion coefficient of the polypropylene composition. Similarly, a lower content of toughening agent results in a higher coefficient of linear expansion of the material.
According to the invention, through the cooperative control of the components and the use of the talcum powder with high length-diameter ratio and the nucleating agent, the linear expansion coefficient of the polypropylene composition is further effectively reduced, and the dimensional stability of the material is improved.
According to the invention, the crystallinity of the material is improved by adopting high-flow polypropylene and adding the nucleating agent, an alpha crystal form is formed, the tensile strength of the material is increased, the damage resistance is improved, and the improvement of the viscose performance is facilitated. The length-diameter ratio of the talcum powder is more than or equal to 10:1, and compared with the small-length-diameter ratio roundish talcum powder particles, the talcum powder is more favorable for improving the surface performance of the polypropylene composition during gluing, is not easy to cause surface damage and whitening, and further improves the gluing performance.
The size stability of the polypropylene composition can be ensured by controlling the melt mass flow rate of the polypropylene and the toughening agent, and the polypropylene composition is more beneficial to processing and molding large-size plastic parts. The toughening agent is added too much or too little to reduce the shearing strength of the viscose, so that good viscose performance cannot be achieved
The polypropylene composition can obviously reduce the linear expansion coefficient through the synergistic effect of all components, enables parts to be equivalent to steel or aluminum alloy or long glass fiber reinforced PP materials, has very good adhesive property, is suitable for being applied to the fields of automobile parts and household appliances, and can be used for preparing automobile parts such as instrument panels, door panels, stand columns, bumpers, mud guards, guide plates, new energy vehicle cabin cover inner plate frameworks, rear tail door inner plate frameworks and other automobile parts and household appliances such as electric cooker covers, vehicle-mounted refrigerator bases, air conditioner air outlet cover plates, pet water fountain bases and the like.
In a specific embodiment, in order to further improve the dimensional stability of the polypropylene composition and enhance the adhesive performance, the polypropylene composition preferably comprises the following components in parts by weight:
45-55 parts of polypropylene, 19-23 parts of a toughening agent, 30-35 parts of talcum powder, 3-4 parts of basic magnesium sulfate whisker, 0.2-0.3 part of a nucleating agent and 0.2-0.8 part of other additives.
In a specific embodiment, in order to further improve the dimensional stability of the polypropylene composition, the talc powder preferably has an aspect ratio of (12-15): 1.
In a specific embodiment, in order to further improve the CLTE stability of the polypropylene composition, the polypropylene preferably has a melt mass flow rate of 90-120 g/10min under the load of 2.16kg at 230 ℃ and the detection standard ISO 1133-1-2011.
In a specific embodiment, in order to further improve the CLTE anisotropic difference performance of the polypropylene composition, the toughening agent preferably has a melt mass flow rate of 1-4 g/10min at 190 ℃ and under a load of 2.16kg, and the detection standard is ASTM D1238-2013.
In particular embodiments, the toughening agents of the present invention may be ethylene-octene copolymers and/or ethylene-butene copolymers.
In a specific embodiment, the nucleating agent of the present invention may be an arylamine nucleating agent and/or an aryl phosphate nucleating agent.
In particular embodiments, other additives of the present invention may include antioxidants, light stabilizers, and lubricants.
In particular embodiments, the antioxidant of the present invention may be at least one of a hindered phenolic antioxidant and a phosphite antioxidant.
The light stabilizer of the present invention may be a hindered amine light stabilizer.
The lubricant of the invention can be one or more of glyceryl monostearate and stearic acid metal salt compounds.
The invention also specifically protects a preparation method of the polypropylene composition, which is characterized by comprising the following steps:
uniformly mixing the components, adding the mixture into a double-screw extruder, melting and mixing, wherein the mixing temperature is 170-220 ℃, the screw rotating speed is 350-450 rpm, and extruding and granulating to obtain the polypropylene composition.
The invention also specifically protects the application of the polypropylene composition in the preparation of automobile and household appliance parts.
Compared with the prior art, the invention has the beneficial effects that:
according to the polypropylene composition, the talcum powder with high length-diameter ratio is added, the basic magnesium sulfate whisker is properly added, the CLTE-MD value can be controlled to be 3.7 or below, and the CLTE-TD value can be controlled to be 4.3 or below, so that the linear expansion coefficient of the polypropylene composite material is remarkably reduced, and the dimensional stability of the material is improved.
The polypropylene composition adopts the synergistic effect of the specific nucleating agent and the talcum powder component with high length-diameter ratio to improve the crystallinity of the material, form an alpha crystal form, improve the damage resistance, obviously improve the adhesive performance of the polypropylene composition, control the damage ratio of the surface layer of the base material to be 0 percent, and meet the application requirement in the preparation of automobile and household appliance parts when the adhesive shear strength can reach more than 3.32 MPa.
Drawings
FIG. 1 is a graph showing the sticking experiment in example 4.
Fig. 2 is a sticking test chart of comparative example 2.
Detailed Description
The present invention will be further described with reference to specific embodiments, but the present invention is not limited to the examples in any way. The starting reagents employed in the examples of the present invention are, unless otherwise specified, those that are conventionally purchased.
The raw materials for the examples and comparative examples of the present invention are illustrated below:
polypropylene:
1 part of polypropylene: BI970 with a melt mass flow rate of 112g/10min at 230 ℃ under a load of 2.16kg, TOTAL in Korea
Polypropylene-2: BJ368MO, melt mass flow rate 70g/10min at 230 deg.C under 2.16kg load, Bolu;
polypropylene-3: MH7900, melt mass flow rate at 230 ℃, 2.16kg load, 149g/10min, LG;
polypropylene-4: HI828 with a melt mass flow rate of 50g/10min at 230 ℃ under a load of 2.16kg, TOTAL, Korea;
polypropylene-5: MN150, the melt mass flow rate is 158g/10min under the load of 2.16kg at 230 ℃, and the melt is petrochemical;
a toughening agent:
toughening agent-1: ethylene-butene copolymer, LC565, 190 ℃, under a load of 2.16kg, melt mass flow rate of 5g/10min, Korean LG;
toughening agent-2: ethylene-octene copolymer, EG 8180, melt mass flow rate of 0.5g/10min at 190 ℃ under 2.16kg load, U.S. DOW;
toughening agent-3: ethylene-butene copolymer, DF640, 190 ℃, melt mass flow rate of 3g/10min under 2.16kg load, TAFMER;
toughening agent-4: ethylene-octene copolymer, HM7487, melt mass flow rate of 0.2g/10min at 190 deg.C under 2.16kg load, U.S. DOW;
toughening agent-5: ethylene-octene copolymer, EG 8137, melt mass flow rate of 13g/10min at 190 ℃ under 2.16kg load, U.S. DOW;
nucleating agent-1: arylphosphate salt nucleating agent, NA-11, Idiaceae;
nucleating agent-2: arylamine nucleating agents WBGI, TMB-5 and BOC Sciences;
talc powder:
1 part of talcum powder: the length-diameter ratio is 12:1, AHCP250, and Aihai Liaoning;
talc powder-2: the length-diameter ratio is 5:1, AHCP1250, Liaoning Aihai;
talc powder-3: the length-diameter ratio is 10:1, AHCP1105, and Aihai Liaoning;
talc powder-4: the length-diameter ratio is 15:1, CHX 05L and Aihai Liaoning;
talc powder-5: the length-diameter ratio is 17:1, CHX ultra L, and Artemisia Liaoning sea;
basic magnesium sulfate whisker, department of Japan;
antioxidant: the hindered phenol antioxidant and the phosphite antioxidant are commercially available in a mass ratio of 1:1, and the parallel embodiment and the comparative example of the invention are the same;
lubricant: calcium stearate, commercially available, the parallel examples of the invention and the comparative examples are all of the same kind.
Example 1
A polypropylene composition comprises the following components in parts by weight as shown in the following table 1:
TABLE 1
| Examples | 1 | 2 | 3 | 4 | 5 |
| Polypropylene-1 | 40 | 58 | 45 | 55 | 45 |
| Flexibilizer-1 | 26 | 13 | 23 | 19 | 23 |
| Talc powder-1 | 25 | 40 | 35 | 30 | 35 |
| Basic magnesium sulfate whisker | 6 | 1 | 3 | 4 | 3 |
| Nucleating agent-1 | 0.1 | 0.4 | 0.2 | 0.3 | 0.2 |
| Antioxidant agent | 0.4 | 0.2 | 0.2 | 0.2 | 0 |
| Light stabilizers | 0.4 | 0.2 | 0.2 | 0.2 | 0 |
| Lubricant agent | 0.2 | 0.2 | 0.2 | 0.2 | 0 |
The preparation method of the polypropylene composition of examples 1 to 5 includes the following steps:
and uniformly mixing the components, adding the mixture into a double-screw extruder, melting and mixing, extruding and granulating at the mixing temperature of 200 ℃ and the screw rotating speed of 400rpm to obtain the polypropylene composition.
Example 6
A polypropylene composition comprising substantially the same components and amounts as in example 3, except that the polypropylene is polypropylene-2.
The preparation method of the polypropylene composition comprises the following steps:
uniformly mixing the components, adding the mixture into a double-screw extruder, melting and mixing, wherein the mixing temperature is 200 ℃, the screw rotating speed is 400rpm, and extruding and granulating to obtain the polypropylene composition.
Example 7
A polypropylene composition comprising substantially the same components and amounts as in example 3, except that the polypropylene is polypropylene-3.
The preparation method of the polypropylene composition comprises the following steps:
uniformly mixing the components, adding the mixture into a double-screw extruder, melting and mixing, wherein the mixing temperature is 200 ℃, the screw rotating speed is 400rpm, and extruding and granulating to obtain the polypropylene composition.
Example 8
A polypropylene composition comprising substantially the same components and amounts as in example 3, except that the toughening agent is toughener-2.
The preparation method of the polypropylene composition comprises the following steps:
uniformly mixing the components, adding the mixture into a double-screw extruder, melting and mixing, wherein the mixing temperature is 200 ℃, the screw rotating speed is 400rpm, and extruding and granulating to obtain the polypropylene composition.
Example 9
A polypropylene composition comprising substantially the same components and amounts as in example 3, except that the toughening agent is toughener-3.
The preparation method of the polypropylene composition comprises the following steps:
uniformly mixing the components, adding the mixture into a double-screw extruder, melting and mixing, wherein the mixing temperature is 200 ℃, the screw rotating speed is 400rpm, and extruding and granulating to obtain the polypropylene composition.
Example 10
A polypropylene composition comprising substantially the same components and amounts as in example 3, except that the nucleating agent is nucleating agent-2.
The preparation method of the polypropylene composition comprises the following steps:
uniformly mixing the components, adding the mixture into a double-screw extruder, melting and mixing, wherein the mixing temperature is 200 ℃, the screw rotating speed is 400rpm, and extruding and granulating to obtain the polypropylene composition.
Example 11
A polypropylene composition comprising substantially the same components and amounts as in example 3, except that the talc is talc-3.
The preparation method of the polypropylene composition comprises the following steps:
and uniformly mixing the components, adding the mixture into a double-screw extruder, melting and mixing, extruding and granulating at the mixing temperature of 200 ℃ and the screw rotating speed of 400rpm to obtain the polypropylene composition.
Example 12
A polypropylene composition comprising substantially the same components and amounts as in example 3, except that the talc is talc-4.
The preparation method of the polypropylene composition comprises the following steps:
uniformly mixing the components, adding the mixture into a double-screw extruder, melting and mixing, wherein the mixing temperature is 200 ℃, the screw rotating speed is 400rpm, and extruding and granulating to obtain the polypropylene composition.
Example 13
A polypropylene composition comprising substantially the same components and amounts as in example 3, except that the talc is talc-5.
The preparation method of the polypropylene composition comprises the following steps:
uniformly mixing the components, adding the mixture into a double-screw extruder, melting and mixing, wherein the mixing temperature is 200 ℃, the screw rotating speed is 400rpm, and extruding and granulating to obtain the polypropylene composition.
Comparative examples 1 to 7
A polypropylene composition comprises the following components in parts by weight as shown in the following table 2:
TABLE 2
The preparation method of the polypropylene composition of comparative examples 1 to 7 comprises the following steps:
and uniformly mixing the components, adding the mixture into a double-screw extruder, melting and mixing, extruding and granulating at the mixing temperature of 200 ℃ and the screw rotating speed of 400rpm to obtain the polypropylene composition.
Comparative example 9
A polypropylene composition comprising substantially the same components and amounts as in example 3, except that the polypropylene is polypropylene-4.
The preparation method of the polypropylene composition comprises the following steps:
uniformly mixing the components, adding the mixture into a double-screw extruder, melting and mixing, wherein the mixing temperature is 200 ℃, the screw rotating speed is 400rpm, and extruding and granulating to obtain the polypropylene composition.
Comparative example 10
A polypropylene composition comprising substantially the same components and amounts as in example 3, except that the polypropylene is polypropylene-5.
The preparation method of the polypropylene composition comprises the following steps:
uniformly mixing the components, adding the mixture into a double-screw extruder, melting and mixing, wherein the mixing temperature is 200 ℃, the screw rotating speed is 400rpm, and extruding and granulating to obtain the polypropylene composition.
Comparative example 11
A polypropylene composition comprising substantially the same components and amounts as in example 3, except that the toughening agent is toughener-4.
The preparation method of the polypropylene composition comprises the following steps:
and uniformly mixing the components, adding the mixture into a double-screw extruder, melting and mixing, extruding and granulating at the mixing temperature of 200 ℃ and the screw rotating speed of 400rpm to obtain the polypropylene composition.
Comparative example 12
A polypropylene composition comprising substantially the same components and amounts as in example 3, except that the toughening agent is toughener-5.
The preparation method of the polypropylene composition comprises the following steps:
uniformly mixing the components, adding the mixture into a double-screw extruder, melting and mixing, wherein the mixing temperature is 200 ℃, the screw rotating speed is 400rpm, and extruding and granulating to obtain the polypropylene composition.
Comparative example 13
A polypropylene composition comprising substantially the same components and amounts as in example 3, except that the talc is talc-2.
The preparation method of the polypropylene composition comprises the following steps:
and uniformly mixing the components, adding the mixture into a double-screw extruder, melting and mixing, extruding and granulating at the mixing temperature of 200 ℃ and the screw rotating speed of 400rpm to obtain the polypropylene composition.
Result detection
The polypropylene compositions of the examples and the comparative examples are subjected to related performance detection, and the specific detection method comprises the following steps:
mechanical properties:
(1) tensile strength: testing by adopting a Zwick Z005 electronic universal tester according to ISO 527-2-2016; MPa of
(2) The impact strength of the notch of the simply supported beam is as per ISO 179-2010: testing by adopting a Zwick HIT5.5P electronic display impact instrument; kJ/m2；
Dimensional stability:
coefficient of linear expansion: the test was carried out according to ISO11359-2-2014, using TMA, units: 1/DEG C.
CLTE-MD and CLTE-TD represent the linear expansion coefficient in the flow direction and the linear expansion coefficient in the vertical direction, respectively.
Adhesive performance
(1) Testing the value of the sticking antedyne: a commercially available dynes pen, brand: shine, dyne pen was drawn over the surface of the test plate (150mm x 25mm x 2mm) and observed for liquid surface shrinkage, 10-5N, the higher the dyne value the better the adhesive performance.
(2) And (3) testing the shear strength: the test was performed with reference to the EQCT-851 standard.
Preparation of a sample: 150mm × 25 × 2mm PP-LGF40 test board and 150mm × 25 × 2mm polypropylene composition test board, wiping the surface of the test board with isopropanol with the concentration of 75%, drying in the sun, then carrying out surface treatment with flame, controlling the flame temperature at 1000-1500 ℃, and keeping the flame outer flame distance from the surface of the test board at 8-12 cm. Then, the PP-LGF40 and polypropylene composition test board after surface treatment are glued by polyurethane glue, the lapping length is 10 +/-2 mm, the glue layer thickness is about 2mm, then the glued test board is placed in a constant temperature and humidity (23 +/-2 ℃ and 50 +/-5% RH) laboratory for curing for 72 hours, then a tensile test is carried out at a speed of 20mm/min, and the shear strength and MPa are calculated according to the lapping area.
(3) Destruction ratio of the surface layer of the base material: the proportion of the whitening of the base material or the tearing of the surface layer occupying the area of the viscose is percent, and the lower the damage proportion of the surface layer of the base material is, the better the shearing strength of the viscose of the material is.
The specific test results are shown in Table 3 below.
TABLE 3
The polypropylene composition can reach the tensile strength of more than 20.5MPa, and the impact strength of a simple beam notch can reach 35kJ/m2The mechanical property requirements in the application field are met.
As can be seen from the data in Table 3, the CLTE-MD value can be controlled to be 3.7 or less and the CLTE-TD value can be controlled to be 4.3 or less by the synergistic control of the components, so that the reduction of the linear expansion coefficient of the polypropylene composition is effectively improved, and the dimensional stability of the material is improved.
The polypropylene composition of the invention adopts high-flow polypropylene and adds nucleating agent to improve the crystallinity of the material, form alpha crystal form, increase the tensile strength of the material, improve the anti-damage capability, and be more beneficial to improving the viscose performance, the damage ratio of the surface layer of the base material is controlled to be less than 5%, and the viscose shear strength can reach more than 3.26 MPa.
Fig. 1 is an experimental graph of the adhesive in example 4, and it can be seen that the surface graph of the adhesive substrate is not damaged.
Fig. 2 is a graph showing the sticking test of comparative example 2, and it can be seen that the surface layer of the base material is whitened after being damaged after the sticking test.
In comparative example 1 and comparative example 2, too much or too little dosage of the related talcum powder affects the mechanical property and the impact property of the material, and the surface layer of the base material is damaged to a certain degree, so that the CLTE-MD value and the CLTE-TD value can not meet the related requirements and can not reach good adhesive performance.
In comparative example 3, the addition of the alkali magnesium sulfate whiskers is too much, the surface layer of the base material of the polypropylene material is damaged to a certain degree, and the shear strength of the viscose cannot meet the relevant requirements and cannot achieve good viscose performance.
In comparative example 4 and comparative example 5, the surface layer of the base material is damaged to a certain degree when the toughening agent is added too much or too little, and the shear strength of the adhesive cannot meet the relevant requirements and cannot achieve good adhesive performance.
In comparative example 8, the melt mass flow rate of polypropylene was too low, and a certain degree of substrate surface layer damage occurred, and the adhesive shear strength could not meet the relevant requirements, and the CLTE-MD value and the CLTE-TD value could not meet the relevant requirements, and could not achieve good adhesive properties.
The melt mass flow rate of the toughening agents in the comparative examples 10 and 11 is too low or too high, the surface layer of the base material is damaged to a certain degree, the shear strength of the viscose glue cannot meet the relevant requirements, and the CLTE-MD value and the CLTE-TD value cannot meet the relevant requirements and cannot achieve good viscose performance.
Comparative example 12 changes the aspect ratio of the talc, and with the talc having an aspect ratio of 5:1, a certain degree of substrate surface layer damage also occurred, and the adhesive shear strength could not meet the relevant requirements, and the CLTE-MD value and the CLTE-TD value could not meet the relevant requirements, and could not reach good adhesive properties.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. This need not be, nor should it be exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. The polypropylene composition is characterized by comprising the following components in parts by weight:
40-58 parts of polypropylene, 13-26 parts of toughening agent, 25-40 parts of talcum powder, 1-6 parts of basic magnesium sulfate whisker, 0.1-0.4 part of nucleating agent and 0-1 part of other additives,
wherein the melt mass flow rate of the polypropylene is 70-150 g/10min under the load of 2.16kg at 230 ℃, and the detection standard is ISO 1133-1-2011;
the mass flow rate of the melt of the toughening agent is 0.5-6 g/10min at 190 ℃ under the load of 2.16kg, and the detection standard is ASTM D1238-2013;
the length-diameter ratio of the talcum powder is more than or equal to 10: 1.
2. The polypropylene composition of claim 1, comprising the following components in parts by weight:
45-55 parts of polypropylene, 19-23 parts of a toughening agent, 30-35 parts of talcum powder, 3-4 parts of basic magnesium sulfate whisker, 0.2-0.3 part of a nucleating agent and 0.2-0.8 part of other additives.
3. The polypropylene composition according to claim 1, wherein the talc powder has an aspect ratio of (12-15): 1.
4. The polypropylene composition according to claim 1, wherein the polypropylene has a melt mass flow rate of 90 to 120g/10min at 230 ℃ under a load of 2.16kg, according to the test standard ISO 1133-1-2011.
5. The polypropylene composition of claim 1, wherein the toughening agent has a melt mass flow rate of 1 to 4g/10min under a load of 2.16kg at 190 ℃ under the test standard ASTM D1238-2013.
6. The polypropylene composition of claim 1, wherein the toughening agent is an ethylene-octene copolymer and/or an ethylene-butene copolymer.
7. The polypropylene composition according to claim 1, wherein the nucleating agent is an arylamine nucleating agent and/or an aryl phosphate nucleating agent.
8. The polypropylene composition of claim 1, wherein the other additives comprise antioxidants, light stabilizers and lubricants.
9. A method for preparing the polypropylene composition according to any one of claims 1 to 8, comprising the steps of:
uniformly mixing the components, adding the mixture into a double-screw extruder, melting and mixing, wherein the mixing temperature is 170-220 ℃, the screw rotating speed is 350-450 rpm, and extruding and granulating to obtain the polypropylene composition.
10. Use of a polypropylene composition according to any one of claims 1 to 8 in the preparation of automotive and household parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210297040.1A CN114736456B (en) | 2022-03-24 | 2022-03-24 | Polypropylene composition and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210297040.1A CN114736456B (en) | 2022-03-24 | 2022-03-24 | Polypropylene composition and preparation method and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114736456A true CN114736456A (en) | 2022-07-12 |
| CN114736456B CN114736456B (en) | 2023-09-26 |
Family
ID=82278046
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210297040.1A Active CN114736456B (en) | 2022-03-24 | 2022-03-24 | Polypropylene composition and preparation method and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114736456B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115895110A (en) * | 2022-11-09 | 2023-04-04 | 金发科技股份有限公司 | Polypropylene composition and preparation method and application thereof |
Citations (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5296186A (en) * | 1992-02-13 | 1994-03-22 | Mitsubishi Petrochemical Company Limited | Process for producing molded products of propylene resin |
| JPH0753914A (en) * | 1993-08-20 | 1995-02-28 | Mitsubishi Chem Corp | Coated automotive member |
| JPH08259750A (en) * | 1995-03-24 | 1996-10-08 | Ube Ind Ltd | Production of fiber-reinforced polypropylene composition |
| JP2001114957A (en) * | 1999-10-20 | 2001-04-24 | Japan Polychem Corp | High-flowability thermoplastic resin composition |
| CN101014662A (en) * | 2004-09-08 | 2007-08-08 | 日本聚丙烯公司 | Polypropylene resin composition and process for producing the same |
| JP2010077396A (en) * | 2008-08-28 | 2010-04-08 | Japan Polypropylene Corp | Propylene-based resin composition and molded article thereof |
| JP2010132861A (en) * | 2008-10-31 | 2010-06-17 | Japan Polypropylene Corp | Resin composition for seamless automobile interior part and application thereof |
| CN101993563A (en) * | 2009-08-24 | 2011-03-30 | 新疆大学 | Preparation method of special polypropylene materials for automobile bumper |
| JP2011144278A (en) * | 2010-01-15 | 2011-07-28 | Japan Polypropylene Corp | Propylene resin composition and molded product thereof |
| CN102875896A (en) * | 2012-09-29 | 2013-01-16 | 天津金发新材料有限公司 | Polypropylene composition with good dimensional stability and preparation method and application thereof |
| CN102952329A (en) * | 2011-08-30 | 2013-03-06 | 中国石油化工股份有限公司 | Polypropylene composition and preparation method thereof |
| CN105504528A (en) * | 2015-12-30 | 2016-04-20 | 上海普利特复合材料股份有限公司 | Polypropylene composite material capable of realizing light weight and with low linear expansion coefficient and preparation method thereof |
| JP2017082049A (en) * | 2015-10-23 | 2017-05-18 | 株式会社プライムポリマー | Filler-containing propylene resin composition and molded body obtained from the same |
| CN108219277A (en) * | 2018-01-18 | 2018-06-29 | 金发科技股份有限公司 | A kind of fascia interior trim PP composite material and preparation method thereof |
| CN108219342A (en) * | 2018-01-18 | 2018-06-29 | 金发科技股份有限公司 | A kind of polypropylene composite material for automobile bumper and preparation method thereof |
| CN109181118A (en) * | 2018-09-30 | 2019-01-11 | 南京聚隆科技股份有限公司 | One kind exempting from basecoat paint automobile exterior material and preparation method thereof |
| CN109627582A (en) * | 2018-12-17 | 2019-04-16 | 南亚塑胶工业股份有限公司 | A kind of lightweight, high tenacity and polypropene composition of high rigidity and preparation method thereof |
| CN110628131A (en) * | 2019-09-26 | 2019-12-31 | 金发科技股份有限公司 | Polypropylene composite material with low shrinkage and low linear expansion coefficient and preparation method thereof |
| CN110922679A (en) * | 2019-11-14 | 2020-03-27 | 中广核俊尔（上海）新材料有限公司 | Scratch-resistant and light-aging-resistant polypropylene material and preparation method thereof |
| US20200247984A1 (en) * | 2019-01-31 | 2020-08-06 | Toyoda Gosei Co., Ltd. | Resin composition and injection-molded article |
| CN112143116A (en) * | 2020-09-27 | 2020-12-29 | 上海金发科技发展有限公司 | Polypropylene composite material with consistent crystallinity of skin layer and core layer and preparation method thereof |
| CN112457590A (en) * | 2020-11-24 | 2021-03-09 | 上海金发科技发展有限公司 | Flame-treatment-free sprayable polypropylene composite material and preparation method thereof |
| CN112662053A (en) * | 2020-12-09 | 2021-04-16 | 上海普利特复合材料股份有限公司 | Low-density high-performance modified polypropylene composite material for vehicle bumper and preparation method thereof |
| CN112679862A (en) * | 2020-12-14 | 2021-04-20 | 金发科技股份有限公司 | Polypropylene composition and preparation method thereof |
| CN113861566A (en) * | 2021-09-18 | 2021-12-31 | 金发科技股份有限公司 | Polypropylene composition and preparation method thereof |
-
2022
- 2022-03-24 CN CN202210297040.1A patent/CN114736456B/en active Active
Patent Citations (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5296186A (en) * | 1992-02-13 | 1994-03-22 | Mitsubishi Petrochemical Company Limited | Process for producing molded products of propylene resin |
| JPH0753914A (en) * | 1993-08-20 | 1995-02-28 | Mitsubishi Chem Corp | Coated automotive member |
| JPH08259750A (en) * | 1995-03-24 | 1996-10-08 | Ube Ind Ltd | Production of fiber-reinforced polypropylene composition |
| JP2001114957A (en) * | 1999-10-20 | 2001-04-24 | Japan Polychem Corp | High-flowability thermoplastic resin composition |
| CN101014662A (en) * | 2004-09-08 | 2007-08-08 | 日本聚丙烯公司 | Polypropylene resin composition and process for producing the same |
| JP2010077396A (en) * | 2008-08-28 | 2010-04-08 | Japan Polypropylene Corp | Propylene-based resin composition and molded article thereof |
| JP2010132861A (en) * | 2008-10-31 | 2010-06-17 | Japan Polypropylene Corp | Resin composition for seamless automobile interior part and application thereof |
| CN101993563A (en) * | 2009-08-24 | 2011-03-30 | 新疆大学 | Preparation method of special polypropylene materials for automobile bumper |
| JP2011144278A (en) * | 2010-01-15 | 2011-07-28 | Japan Polypropylene Corp | Propylene resin composition and molded product thereof |
| CN102952329A (en) * | 2011-08-30 | 2013-03-06 | 中国石油化工股份有限公司 | Polypropylene composition and preparation method thereof |
| CN102875896A (en) * | 2012-09-29 | 2013-01-16 | 天津金发新材料有限公司 | Polypropylene composition with good dimensional stability and preparation method and application thereof |
| JP2017082049A (en) * | 2015-10-23 | 2017-05-18 | 株式会社プライムポリマー | Filler-containing propylene resin composition and molded body obtained from the same |
| CN105504528A (en) * | 2015-12-30 | 2016-04-20 | 上海普利特复合材料股份有限公司 | Polypropylene composite material capable of realizing light weight and with low linear expansion coefficient and preparation method thereof |
| CN108219277A (en) * | 2018-01-18 | 2018-06-29 | 金发科技股份有限公司 | A kind of fascia interior trim PP composite material and preparation method thereof |
| CN108219342A (en) * | 2018-01-18 | 2018-06-29 | 金发科技股份有限公司 | A kind of polypropylene composite material for automobile bumper and preparation method thereof |
| CN109181118A (en) * | 2018-09-30 | 2019-01-11 | 南京聚隆科技股份有限公司 | One kind exempting from basecoat paint automobile exterior material and preparation method thereof |
| CN109627582A (en) * | 2018-12-17 | 2019-04-16 | 南亚塑胶工业股份有限公司 | A kind of lightweight, high tenacity and polypropene composition of high rigidity and preparation method thereof |
| US20200247984A1 (en) * | 2019-01-31 | 2020-08-06 | Toyoda Gosei Co., Ltd. | Resin composition and injection-molded article |
| CN110628131A (en) * | 2019-09-26 | 2019-12-31 | 金发科技股份有限公司 | Polypropylene composite material with low shrinkage and low linear expansion coefficient and preparation method thereof |
| CN110922679A (en) * | 2019-11-14 | 2020-03-27 | 中广核俊尔（上海）新材料有限公司 | Scratch-resistant and light-aging-resistant polypropylene material and preparation method thereof |
| CN112143116A (en) * | 2020-09-27 | 2020-12-29 | 上海金发科技发展有限公司 | Polypropylene composite material with consistent crystallinity of skin layer and core layer and preparation method thereof |
| CN112457590A (en) * | 2020-11-24 | 2021-03-09 | 上海金发科技发展有限公司 | Flame-treatment-free sprayable polypropylene composite material and preparation method thereof |
| CN112662053A (en) * | 2020-12-09 | 2021-04-16 | 上海普利特复合材料股份有限公司 | Low-density high-performance modified polypropylene composite material for vehicle bumper and preparation method thereof |
| CN112679862A (en) * | 2020-12-14 | 2021-04-20 | 金发科技股份有限公司 | Polypropylene composition and preparation method thereof |
| CN113861566A (en) * | 2021-09-18 | 2021-12-31 | 金发科技股份有限公司 | Polypropylene composition and preparation method thereof |
Non-Patent Citations (12)
| Title |
|---|
| KUN ZHANG ETAL.: ""Effect of melt flow on morphology and linear thermal expansion of injection-molded ethylene–propylene–diene terpolymer/isotactic polypropylene blends"", SOCIETY OF CHEMICAL INDUSTRY, vol. 64, pages 1225 - 1234 * |
| KUN ZHANG ETAL.: ""Thermoplastic rubber/PP elastomers toward extremely low thermal expansion"", JOURNAL OF APPLIED POLYMER SCIENCE, vol. 133, pages 43902 - 1 * |
| MOHAMED A. ABDELWAHAB ETAL.: ""Injection Molded Novel Biocomposites from Polypropylene and Sustainable Biocarbon"", MOLECULES, vol. 24, pages 4026 - 1 * |
| 俞飞等: "低收缩、低线性膨胀系数聚丙烯材料研究", 工程塑料应用, no. 06, pages 18 - 23 * |
| 俞飞等: "汽车内饰用聚丙烯复合材料的制备与性能", 工程塑料应用, no. 12, pages 41 - 47 * |
| 吴国峰等: "车用聚丙烯材料线性膨胀系数的影响因素分析", 工程塑料应用, no. 03, pages 134 - 137 * |
| 左瑞清等: "成核剂对聚丙烯力学性能与结晶行为的影响", 合成树脂及塑料, no. 03, pages 9 - 11 * |
| 庞键等: "β成核剂对聚丙烯结晶及力学和耐磨性能的影响研究", 合肥学院学报(自然科学版), no. 01, pages 42 - 44 * |
| 张跃飞等: "山梨醇和有机磷类成核剂对聚丙烯性能和结晶行为的影响", 长沙理工大学学报(自然科学版), no. 04, pages 86 - 90 * |
| 罗忠富等: "车用聚丙烯复合材料线性膨胀系数的研究", 现代塑料加工应用, no. 02, pages 26 - 28 * |
| 雷华等: "不同成核剂对聚丙烯材料结晶形态及性能的影响", 塑料, no. 03, pages 27 - 31 * |
| 黄伟江等: "超细微化有机磷酸盐成核剂对聚丙烯性能的影响", 工程塑料应用, no. 08, pages 4 - 8 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115895110A (en) * | 2022-11-09 | 2023-04-04 | 金发科技股份有限公司 | Polypropylene composition and preparation method and application thereof |
| CN115895110B (en) * | 2022-11-09 | 2023-09-12 | 金发科技股份有限公司 | Polypropylene composition and preparation method and application thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114736456B (en) | 2023-09-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101874918B1 (en) | Light-weight polypropylene resin composition and molded product of vehicle interior material using the same | |
| KR101714074B1 (en) | Polypropylene resin composition for trims of vehicles | |
| EP1756225A1 (en) | Polyamide molding compounds having improved flowability | |
| KR20150072558A (en) | Polypropylene resin composition | |
| US20190322836A1 (en) | Polymer compositions | |
| CN113563667A (en) | Light-weight modified polypropylene composite material for compound filled bumper and preparation method thereof | |
| CN114736456A (en) | Polypropylene composition and preparation method and application thereof | |
| CN114835975A (en) | Low-warpage glass fiber reinforced polypropylene composite material and preparation method and application thereof | |
| KR20130028558A (en) | Polylactic acid composition for automobile parts | |
| KR101307231B1 (en) | Reused polypropylene composite for car interior or exterior parts | |
| DE102017223009B4 (en) | POLYPROPYLENE RESIN COMPOSITION AND MOLDED PRODUCT THEREOF | |
| CN107337841B (en) | Composition of polypropylene having excellent touch and dimensional stability | |
| KR20160064389A (en) | Polypropylene resin composition and injecion-molded article prepared therefrom | |
| CN109438901A (en) | A kind of anti-UV, fire-retardant automobile-used damping thermoplastic elastic material and preparation method thereof | |
| CN112662053A (en) | Low-density high-performance modified polypropylene composite material for vehicle bumper and preparation method thereof | |
| KR100387648B1 (en) | Composition of polypropylene resin | |
| KR102187566B1 (en) | Polypropylene resin composition and molded product thereof | |
| KR102573484B1 (en) | Polyolefine resin composition, polyolefine master batch, process of polyolefine master batch and article using thereof | |
| KR100204658B1 (en) | An elastic resin complex used for outside material of a car | |
| JP2001261902A (en) | Polypropylene-based resin composition | |
| DE10011452A1 (en) | Thermoplastic molding composition useful for gas-assisted injection molding comprises polyamide, glass fibers and mica | |
| JP7261657B2 (en) | Thermoplastic resin composition for millimeter-wave radar member, molded article, and method for producing resin composition | |
| JP6166989B2 (en) | Wave louver for in-vehicle air conditioner | |
| JP2002212353A (en) | Polypropylene resin composition | |
| KR101551019B1 (en) | Polypropylene resin composition |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |