CN112280168A - Preparation method of antistatic polypropylene modified material - Google Patents
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- CN112280168A CN112280168A CN202011074391.3A CN202011074391A CN112280168A CN 112280168 A CN112280168 A CN 112280168A CN 202011074391 A CN202011074391 A CN 202011074391A CN 112280168 A CN112280168 A CN 112280168A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
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- 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
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- C08K2201/011—Nanostructured additives
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- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- C—CHEMISTRY; METALLURGY
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- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/06—Polymer mixtures characterised by other features having improved processability or containing aids for moulding methods
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/04—Thermoplastic elastomer
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Abstract
The invention provides a preparation method of an antistatic polypropylene modified material, which comprises the following steps of S01, preparing raw materials, 65-95 parts by mass of polypropylene resin, 0-15 parts by mass of a toughening agent, 5-20 parts by mass of carbon nanofibers, 0.05-0.2 part by mass of a silane coupling agent and 0.2-0.6 part by mass of an antioxidant; step S02: premixing 65-95 parts by mass of polypropylene resin, 0-15 parts by mass of toughening agent, 0.05-0.2 part by mass of silane coupling agent and 0.2-0.6 part by mass of antioxidant in a mixer at 80-90 ℃, feeding from a main feeding port of a double-screw extruder, feeding 5-20 parts by mass of carbon nanofibers through a side feeding port of the double-screw extruder, and extruding and granulating through the extruder to complete the preparation. The invention can replace inorganic rigid particles to toughen and strengthen the material while eliminating the static charge on the surface of the material, so as to obtain the high-strength polypropylene material.
Description
Technical Field
The invention belongs to the field of modification of polypropylene modified materials, and relates to a preparation method of an antistatic polypropylene modified material.
Background
At present, more and more applied plastic parts of automotive interiors can reduce the weight of automobiles, realize light weight of automobiles and reduce the manufacturing cost of automobiles, and along with the high-speed development of the automobile industry, consumers have higher and higher requirements on the comfort of the automobiles and have higher and higher requirements on the performances of odor property, scratch property, flame retardance, environmental protection and the like of the automobiles. The plastic part of the automobile is made of an insulating material, and the surface of the plastic part is often charged with static electricity, so that dust and hair debris in air are adsorbed, the surface of the plastic part is full of dust, the appearance is influenced, bacteria are easy to breed, and the health is influenced, so that the development of a high-efficiency antistatic material is particularly important.
At present, various methods for solving the problem of static charge accumulation on the surface of a polypropylene product are available in the market, including a surface conductive liquid spraying method, a surface wiping method and polypropylene modified by adding an antistatic agent. Wherein the surface spraying method and the surface wiping method can only solve the charge accumulation for a while and need repeated operation. The prior market is more modified by adding antistatic agent, such as an antistatic polypropylene composition applied in Jinfa technology, patent application No: 201810227583.X, application date: year 2018, month 3, day 18, publication No.: 108384117A, hyperbranched polyethyleneimine is added as an antistatic agent to prepare an antistatic polypropylene material, but the antistatic polypropylene prepared by the method has short timeliness and cannot achieve the effect of long-time antistatic; the polypropylene composition, the reinforced flame-retardant antistatic polypropylene and the preparation method and the product thereof, which are applied by Beijing low-carbon clean energy research institute, have the following patent application numbers: 201710329392.X, application date: year 2017, month 5, day 11, publication No.: 108864562A, provides the antistatic polypropylene material prepared by using carbon black, glyceryl stearate, ethoxylated alcohol and alkyl sulfate as antistatic agents, but the antistatic polypropylene prepared by the method has short timeliness and cannot achieve the effect of long-time antistatic. In addition, the mechanical property of the product is reduced due to the addition of the antistatic agent, and the application of the product in practice is influenced.
Disclosure of Invention
1. The technical problem to be solved is as follows:
the existing method for solving the problem of static charge accumulation on the surface of a polypropylene product is added with an antistatic agent to cause the reduction of the mechanical property of the product, thereby influencing the application in practice.
2. The technical scheme is as follows:
in order to solve the problems, the invention provides a preparation method of an antistatic polypropylene modified material, which comprises the following steps of S01, preparing raw materials, 65-95 parts by mass of polypropylene resin, 0-15 parts by mass of a toughening agent, 5-20 parts by mass of carbon nanofibers, 0.05-0.2 part by mass of a silane coupling agent and 0.2-0.6 part by mass of an antioxidant; step S02: premixing 65-95 parts by mass of polypropylene resin, 0-15 parts by mass of toughening agent, 0.05-0.2 part by mass of silane coupling agent and 0.2-0.6 part by mass of antioxidant in a high-speed mixer at 80-90 ℃, feeding from a main feeding port of a double-screw extruder, feeding 5-20 parts by mass of nano carbon fiber through a side feeding port of the double-screw extruder, and extruding and granulating through the extruder to complete the preparation.
The double-screw extruder is divided into nine sections, wherein the temperature of the first section is 175-190 ℃, the temperature of the second and third sections is 180-210 ℃, the temperature of the fourth, fifth, sixth, seventh and eighth sections is 180-220 ℃, the temperature of the ninth section is 180-200 ℃, and three-stage vacuum pumping is carried out in the third, fifth and seventh sections.
The first interval temperature was 185 ℃.
The temperature of the second and third intervals is 190 ℃.
The fourth, fifth, sixth, seventh and eighth intervals are 195 ℃.
The ninth zone is 190 ℃.
The toughening agent is one or a combination of more of POE elastomer, SBS elastomer and EPDM ternary rubber.
The antioxidant is any one of 1010, 168/DLTP and 3853.
And (4) extruding and molding the granules by an injection molding machine to prepare a sample strip for detecting the performance.
Bending properties according to GB/T9341-2000, impact properties according to GB/T1843-1996, tensile properties according to GB1040-92, melt flow rate according to GB/T3682-2000, and surface resistance according to a resistance pen.
3. Has the advantages that:
the invention can replace inorganic rigid particles to toughen and strengthen the material while eliminating the static charge on the surface of the material, so as to obtain the high-strength polypropylene material.
Detailed Description
The present invention will be described in detail with reference to examples.
In the following embodiment, the polypropylene resin is PP9927 produced by petrifaction of Yanshan mountain.
The toughening agent is one or a combination of more of POE elastomer, SBS elastomer and EPDM ternary rubber. The following example used POE was POE8150, produced by Dow chemical.
The antioxidant is any one of 1010, 168/DLTP and 3853. In the following examples, the antioxidant is antioxidant 1010 produced by Nicotiana Xinxiu Chemicals, Inc.
Example 1
Preparing 70 parts by mass of polypropylene resin, 10 parts by mass of a toughening agent, 20 parts by mass of carbon nanofibers, 0.2 part by mass of a silane coupling agent and 0.3 part by mass of an antioxidant, mixing 70 parts by mass of the polypropylene resin, 10 parts by mass of the toughening agent, 0.2 part by mass of the silane coupling agent and 0.3 part by mass of the antioxidant in a high-speed mixer at 85 ℃ for 5 minutes, feeding the mixture from a main feeding port of a double-screw extruder, feeding 20 parts by mass of carbon nanofiber bundles from a side feeding port of the double-screw extruder, and extruding and granulating the mixture by the extruder. The temperature of the extruder was: the first interval is 185 ℃, the second interval is 190 ℃, the fourth interval is 195 ℃, the fifth interval is six, the seventh interval is 190 ℃ and the ninth interval is 190 ℃, and three-stage vacuum pumping is carried out in the third interval, the fifth interval and the seventh interval.
The properties of the antistatic polypropylene modifier prepared in this way are shown in Table 1.
Example 2
Preparing 75 parts by mass of polypropylene resin, 10 parts by mass of a toughening agent, 15 parts by mass of carbon nanofibers, 0.15 part by mass of a silane coupling agent and 0.3 part by mass of an antioxidant, mixing 75 parts by mass of the polypropylene resin, 10 parts by mass of the toughening agent, 0.15 part by mass of the silane coupling agent and 0.3 part by mass of the antioxidant in a high-speed mixer at 80 ℃ for 5 minutes, feeding the mixture from a main feeding port of a double-screw extruder, feeding 15 parts by mass of carbon nanofiber bundles from a side feeding port of the double-screw extruder, and extruding and granulating the mixture by the extruder. The temperature of the extruder was: the first interval is 175 ℃, the second interval is 180 ℃, the fourth interval is 200 ℃, the fifth interval is 180 ℃, the seventh interval is 180 ℃, the ninth interval is 180 ℃, and three-stage vacuum pumping is carried out in the third interval, the fifth interval and the seventh interval.
The properties of the antistatic polypropylene modifier prepared in this way are shown in Table 1.
Example 3
Preparing 80 parts by mass of polypropylene resin, 10 parts by mass of toughening agent, 10 parts by mass of carbon nanofibers, 0.1 part by mass of silane coupling agent and 0.3 part by mass of antioxidant, mixing 80 parts by mass of polypropylene resin, 10 parts by mass of toughening agent, 0.1 part by mass of silane coupling agent and 0.3 part by mass of antioxidant in a high-speed mixer at 88 ℃ for 5 minutes, feeding from a main feeding port of a double-screw extruder, feeding 10 parts by mass of carbon nanofiber bundles from a side feeding port of the double-screw extruder, and extruding and granulating by the extruder. The temperature of the extruder was: the first interval is 180 ℃, the second interval is 190 ℃, the fourth interval is 210 ℃, the fifth interval is six, the seventh interval is 190 ℃, the ninth interval is 190 ℃, and three-stage vacuum pumping is carried out in the third interval, the fifth interval and the seventh interval.
The properties of the antistatic polypropylene modifier prepared in this way are shown in Table 1.
Example 4
Preparing 85 parts by mass of polypropylene resin, 10 parts by mass of a toughening agent, 5 parts by mass of carbon nanofibers, 0.05 part by mass of a silane coupling agent and 0.3 part by mass of an antioxidant, mixing 85 parts by mass of the polypropylene resin, 5 parts by mass of the toughening agent, 0.05 part by mass of the silane coupling agent and 0.3 part by mass of the antioxidant in a high-speed mixer at 90 ℃ for 5 minutes, feeding the mixture from a main feeding port of a double-screw extruder, feeding 5 parts by mass of carbon nanofiber bundles from a side feeding port of the double-screw extruder, and extruding and granulating the mixture by the extruder. The temperature of the extruder was: the first interval is 190 ℃, the second interval is 210 ℃, the fourth interval is 220 ℃, the fifth interval is 220 ℃, the seventh interval is 200 ℃, and the ninth interval is 200 ℃, and three-stage vacuum pumping is carried out in the third interval, the fifth interval and the seventh interval.
The properties of the antistatic polypropylene modifier prepared in this way are shown in Table 1.
Example 5
Preparing 95 parts by mass of polypropylene resin, 5 parts by mass of carbon nanofibers, 0.1 part by mass of a silane coupling agent and 0.6 part by mass of an antioxidant, mixing 95 parts by mass of the polypropylene resin, 0.1 part by mass of the silane coupling agent and 0.6 part by mass of the antioxidant in a high-speed mixer at 90 ℃ for 5 minutes, feeding the mixture from a main feeding port of a double-screw extruder, feeding 5 parts by mass of carbon nanofiber bundles from a side feeding port of the double-screw extruder, and extruding and granulating the mixture by the extruder. The temperature of the extruder was: the first interval is 185 ℃, the second interval is 190 ℃, the fourth interval is 195 ℃, the fifth interval is six, the seventh interval is 190 ℃ and the ninth interval is 190 ℃, and three-stage vacuum pumping is carried out in the third interval, the fifth interval and the seventh interval.
The properties of the antistatic polypropylene modifier prepared in this way are shown in Table 1.
Example 6
Preparing 80 parts by mass of polypropylene resin, 15 parts by mass of a toughening agent, 5 parts by mass of carbon nanofibers, 0.05 part by mass of a silane coupling agent and 0.2 part by mass of an antioxidant, mixing 80 parts by mass of the polypropylene resin, 15 parts by mass of the toughening agent, 0.05 part by mass of the silane coupling agent and 0.2 part by mass of the antioxidant in a high-speed mixer at 90 ℃ for 5 minutes, feeding the mixture from a main feeding port of a double-screw extruder, feeding 5 parts by mass of carbon nanofiber bundles from a side feeding port of the double-screw extruder, and extruding and granulating the mixture by the extruder. The temperature of the extruder was: the first interval is 190 ℃, the second interval is 210 ℃, the fourth interval is 220 ℃, the fifth interval is 220 ℃, the seventh interval is 200 ℃, and the ninth interval is 200 ℃, and three-stage vacuum pumping is carried out in the third interval, the fifth interval and the seventh interval.
The properties of the antistatic polypropylene modifier prepared in this way are shown in Table 1.
Comparative example 1
Preparing 70 parts by mass of polypropylene resin, 10 parts by mass of toughening agent, 20 parts by mass of talcum powder and 0.3 part by mass of antioxidant, mixing 70 parts by mass of polypropylene resin, 10 parts by mass of toughening agent, 20 parts by mass of talcum powder and 0.3 part by mass of antioxidant in a high-speed mixer for 5 minutes at 90 ℃, feeding from a main feeding port of a double-screw extruder, feeding 5 parts by mass of carbon nanofiber bundle from a side feeding port of the double-screw extruder, and extruding and granulating by the extruder. The temperature of the extruder was: the first interval is 190 ℃, the second interval is 210 ℃, the fourth interval is 220 ℃, the fifth interval is 220 ℃, the seventh interval is 200 ℃, and the ninth interval is 200 ℃, and three-stage vacuum pumping is carried out in the third interval, the fifth interval and the seventh interval.
The properties of the antistatic polypropylene modifier prepared in this way are shown in Table 1.
Example 7
The pellets extruded in examples 1 to 6 were subjected to extrusion molding by means of an injection molding machine to prepare sample bars, and the samples were subjected to bending property test in accordance with GB/T9341-2000, impact property test in accordance with GB/T1843-1996, tensile property test in accordance with GB1040-92, melt flow rate test in accordance with GB/T3682-2000, and surface resistance test in accordance with a resistance pen.
Comparative example 2
Preparing 70 parts by mass of polypropylene resin, 10 parts by mass of a toughening agent, 20 parts by mass of carbon nanofibers and 0.3 part by mass of an antioxidant, crushing 20 parts by mass of carbon nanofibers, blending the crushed carbon nanofibers with 70 parts by mass of polypropylene resin, 10 parts by mass of the toughening agent, 20 parts by mass of carbon nanofiber bundles and 0.3 part by mass of the antioxidant, and granulating by using an extruder, wherein the temperature of the extruder is as follows: the first interval is 190 ℃, the second interval is 210 ℃, the fourth interval is 220 ℃, the fifth interval is 220 ℃, the seventh interval is 200 ℃, and the ninth interval is 200 ℃, and three-stage vacuum pumping is carried out in the third interval, the fifth interval and the seventh interval. The nano carbon fiber is disordered in polypropylene.
The properties of the antistatic polypropylene modifier prepared in this way are shown in Table 1.
TABLE 1
The invention mainly reduces the surface resistivity of the material and improves the strength of the product, the lower the resistivity value is, the better the antistatic effect is, the strength of the product is reflected by the flexural modulus, and the higher the modulus is, the higher the strength is. As can be seen from Table 1, the carbon nanofiber bundle in the polypropylene composite system can significantly reduce the resistivity of the material surface and improve the material strength, and example 1 can reduce the resistivity most obviously by 3 × 105Omega, reduced by 11 orders of magnitude, the strength obtained is 1.9 times of that of the comparative example. The specific resistance of the carbon nanofiber bundles in examples 2, 3 and 4 is gradually increased and the modulus is gradually reduced along with the reduction of the addition amount of the carbon nanofiber bundles, the modulus of the example 2 is 1.5 times that of the comparative example, the modulus of the example 3 is equivalent to that of the comparative example, but the filling amount is only 50 percent of that of the comparative example. From the viewpoint of impact toughness, the impact toughness of examples 2, 3 and 4 is slightly increased compared with that of comparative examples.
Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. The preparation method of the antistatic polypropylene modified material comprises the following steps of S01, preparing raw materials, 65-95 parts by mass of polypropylene resin, 0-15 parts by mass of toughening agent, 5-20 parts by mass of carbon nanofibers, 0.05-0.2 part by mass of silane coupling agent and 0.2-0.6 part by mass of antioxidant; step S02: premixing 65-95 parts by mass of polypropylene resin, 0-15 parts by mass of toughening agent, 0.05-0.2 part by mass of silane coupling agent and 0.2-0.6 part by mass of antioxidant in a high-speed mixer at 80-90 ℃, feeding from a main feeding port of a double-screw extruder, feeding 5-20 parts by mass of nano carbon fiber through a side feeding port of the double-screw extruder, and extruding and granulating through the extruder to complete the preparation.
2. The method of claim 1, wherein: the double-screw extruder is divided into nine sections, wherein the temperature of the first section is 175-190 ℃, the temperature of the second and third sections is 180-210 ℃, the temperature of the fourth, fifth, sixth, seventh and eighth sections is 180-220 ℃, the temperature of the ninth section is 180-200 ℃, and three-stage vacuum pumping is carried out in the third, fifth and seventh sections.
3. The method of claim 2, wherein: the first interval temperature was 185 ℃.
4. The method of claim 2, wherein: the temperature of the second and third intervals is 190 ℃.
5. The method of claim 2, wherein: the fourth, fifth, sixth, seventh and eighth intervals are 195 ℃.
6. The method of claim 2, wherein: the ninth zone is 190 ℃.
7. The method of any one of claims 1-6, wherein: the toughening agent is one or a combination of more of POE elastomer, SBS elastomer and EPDM ternary rubber.
8. The method of any one of claims 1-6, wherein: the antioxidant is any one of 1010, 168/DLTP and 3853.
9. The method of any one of claims 1-6, wherein: and (4) extruding and molding the granules by an injection molding machine to prepare a sample strip for detecting the performance.
10. The method of claim 9, wherein: bending properties according to GB/T9341-2000, impact properties according to GB/T1843-1996, tensile properties according to GB1040-92, melt flow rate according to GB/T3682-2000, and surface resistance according to a resistance pen.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116925466A (en) * | 2023-07-19 | 2023-10-24 | 深圳市卡熙赫服饰有限公司 | Preparation process and application of fiber-toughened modified polypropylene |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103756125A (en) * | 2013-10-29 | 2014-04-30 | 奇瑞汽车股份有限公司 | Polypropylene composite material automobile water tank cross beam and preparation method thereof |
| CN105061902A (en) * | 2015-08-28 | 2015-11-18 | 合肥会通新材料有限公司 | Activated carbon fiber modified polypropylene composite material and preparation method thereof |
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- 2020-10-10 CN CN202011074391.3A patent/CN112280168A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103756125A (en) * | 2013-10-29 | 2014-04-30 | 奇瑞汽车股份有限公司 | Polypropylene composite material automobile water tank cross beam and preparation method thereof |
| CN105061902A (en) * | 2015-08-28 | 2015-11-18 | 合肥会通新材料有限公司 | Activated carbon fiber modified polypropylene composite material and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116925466A (en) * | 2023-07-19 | 2023-10-24 | 深圳市卡熙赫服饰有限公司 | Preparation process and application of fiber-toughened modified polypropylene |
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