CN115011030A - Preparation method for preparing high-performance polypropylene modified material by utilizing reclaimed material - Google Patents
Preparation method for preparing high-performance polypropylene modified material by utilizing reclaimed material Download PDFInfo
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- CN115011030A CN115011030A CN202210548262.6A CN202210548262A CN115011030A CN 115011030 A CN115011030 A CN 115011030A CN 202210548262 A CN202210548262 A CN 202210548262A CN 115011030 A CN115011030 A CN 115011030A
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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
Abstract
A preparation method for preparing a high-performance polypropylene modified material by using a reclaimed material comprises the steps of uniformly mixing 30-60 parts by mass of a polypropylene reclaimed material, 10-60 parts by mass of a polypropylene new material, 6-20 parts by mass of an elastomer toughening agent, 5-20 parts by mass of inorganic rigid particles, 0.5-2 parts by mass of a chain extender and 0.2-0.6 part by mass of an antioxidant, and then extruding and granulating the mixture by using a double-screw extruder at the temperature of 180-240 ℃ to obtain the polypropylene modified material. The chain extender is added to improve the molecular chain polymerization degree of the reclaimed material, and a proper amount of the elastomer toughening agent, the inorganic rigid particles and the stabilizer are added to prepare the high-performance modified polypropylene material for producing the automotive interior and exterior trim, so that the performance can completely meet the requirements of an automotive host factory, and the cost is reduced. The polypropylene modified material prepared by the invention can be recycled, is environment-friendly and low in cost, has similar mechanical property to that of a material prepared from a new material, and has much lower cost.
Description
Technical Field
The invention relates to a modification method of a polypropylene modified material, in particular to a preparation method for preparing a high-performance polypropylene modified material by utilizing a reclaimed material.
Background
The polypropylene is a high polymer material polymerized by propylene which is a petroleum cracking product, and has the advantages of wide source, low price, easy molding, wide adjustable range of performance, recycling, acid resistance, alkali resistance and corrosion resistance, and can be widely applied to various fields of automobiles, household appliances, chemical industry, agriculture and the like.
Because the price of petroleum is frequently innovative, the price of high polymer materials including polypropylene is continuously increased, meanwhile, a large amount of polypropylene materials are used on automobiles, a large amount of automobiles are scrapped every year, a large amount of waste products containing polypropylene materials are generated, and a large amount of waste products containing polypropylene materials are also generated in other industries.
In most of the production, it is desirable that the higher the purity of the raw material is, the better, the smaller the amount of impurities, which may cause a significant deterioration in the product properties, resulting in an immeasurable loss, while the main components of the polypropylene regrind are polypropylene, polyethylene, elastomer, talc and calcium carbonate, and those of the modified polypropylene used for producing automotive interior and exterior parts are, therefore, the main components and contents of the regrind, which are properly adjusted in the subsequent production, can be fully used for producing automotive high-performance polypropylene modified materials.
Disclosure of Invention
The high-performance modified polypropylene material for automobiles prepared by the method has similar mechanical properties to those of the modified polypropylene material prepared from a brand-new material, but the cost is much lower.
A preparation method for preparing a high-performance polypropylene modified material by using a reclaimed material comprises the steps of uniformly mixing 30-60 parts by mass of a polypropylene reclaimed material, 10-60 parts by mass of a polypropylene new material, 6-20 parts by mass of an elastomer toughening agent, 5-20 parts by mass of inorganic rigid particles, 0.5-2 parts by mass of a chain extender and 0.2-0.6 part by mass of an antioxidant, and then extruding and granulating the mixture by using a double-screw extruder at the temperature of 180-240 ℃ to obtain the polypropylene modified material.
The polypropylene regenerated material is automobile interior and exterior plastic parts such as automobile bumpers, instrument panels, door panels, stand columns and the like; electric appliance shells such as a washing machine barrel material, a storage battery shell, an air conditioner shell and the like; at least one of ton bag, food packaging bag, shopping bag, plastic film, etc.
The novel polypropylene material is one or a plurality of polypropylene copolymers, polypropylene homopolymers and block polypropylene.
The toughening agent is at least one of POE, EPDM, SBS and PE.
The inorganic rigid particles are at least one of talcum powder, calcium carbonate, wollastonite, kaolin and mica powder.
The particle size of the inorganic rigid particles is 0.1-100 microns.
The chain extender is a chain extender with epoxy active functional groups.
The screen mesh in the hopper of the extruder is larger than that of the screen mesh at the front end of the screw.
The invention is characterized in that the components of the polypropylene reclaimed material are regulated in the subsequent working procedures by pretreating the polypropylene reclaimed material, and a multiple impurity removal device is used. The chain extender is added to improve the polymerization degree of molecular chains of the reclaimed materials, and a proper amount of the elastomer toughening agent, the inorganic rigid particles and the stabilizer are added to prepare the high-performance modified polypropylene material for producing the interior and exterior trim of the automobile, so that the performance of the polypropylene in all aspects can completely meet the requirements of automobile host factories, and the cost is greatly reduced. The high-performance polypropylene modified material for the automobile prepared by the invention can achieve the effect of a completely new material after being added into a reclaimed material, can be recycled, is environment-friendly and low in cost, has similar mechanical properties to the material prepared from the new material, and has much lower cost.
Detailed Description
The present invention will be described in detail with reference to examples.
In the following examples, the polypropylene is K8003 from yanshan petrochemical production; the inorganic rigid particles are talcum powder produced by Aihai talcum Co Ltd in sea city of Liaoning province; the elastomer toughening agent is POE produced by Dow chemical in America; the chain extender is an epoxy chain extender produced by Zhang hong Kong Yarui chemical Co Ltd; the antioxidant is antioxidant 1010 produced by Nicotiana tabacum, New Xiu chemical Co; the density was tested according to GB/T1033.1-2008, the bending properties were tested according to GB/T9341-2000, and the impact properties were tested according to GB/T1843-1996.
Example 1
Uniformly mixing 60 parts by mass of polypropylene reclaimed material, 10 parts by mass of polypropylene fresh material, 6 parts by mass of elastomer, 15 parts by mass of talcum powder, 2 parts by mass of chain extender and 0.3 part by mass of antioxidant, and then extruding and granulating by a double-screw extruder at the temperature of 180-240 ℃; a filter screen with larger meshes is placed in a hopper of the extruder, and a filter screen with smaller meshes is placed at the front end of the screw.
The processing technology is characterized in that a filter screen with larger meshes is placed in a hopper of an extruder, a filter screen with smaller meshes is placed at the front end of a screw, the filter screen is used for preventing impurities with larger volume from obstructing blanking, the filter screen is used for removing impurities which are difficult to plasticize by heating in materials, and a plurality of magnetic iron removing devices are placed in the hopper and below a granulator to remove iron-containing impurities.
The properties of the modified polypropylene obtained by this process are shown in Table 1.
Example 2
Uniformly mixing 55 parts by mass of a polypropylene reclaimed material, 20 parts by mass of a polypropylene fresh material, 10 parts by mass of an elastomer, 20 parts by mass of talcum powder, 1 part by mass of a chain extender and 0.6 part by mass of an antioxidant, and then extruding and granulating by a double-screw extruder at the temperature of 180-240 ℃; a filter screen with larger meshes is placed in a hopper of the extruder, and a filter screen with smaller meshes is placed at the front end of the screw.
The properties of the modified polypropylene obtained by this process are shown in Table 1.
Example 3
Uniformly mixing 50 parts by mass of polypropylene reclaimed material, 40 parts by mass of polypropylene fresh material, 10 parts by mass of elastomer, 10 parts by mass of talcum powder, 0.5 part by mass of chain extender and 0.3 part by mass of antioxidant, and then extruding and granulating by a double-screw extruder at the temperature of 180-240 ℃; a filter screen with larger meshes is placed in a hopper of the extruder, and a filter screen with smaller meshes is placed at the front end of the screw.
The properties of the modified polypropylene obtained by this process are shown in Table 1.
Example 4
Uniformly mixing 30 parts by mass of a polypropylene reclaimed material, 60 parts by mass of a polypropylene fresh material, 15 parts by mass of an elastomer, 5 parts by mass of talcum powder, 1 part by mass of a chain extender and 0.2 part by mass of an antioxidant, and then extruding and granulating by a double-screw extruder at the temperature of 180-240 ℃; a filter screen with larger meshes is placed in a hopper of the extruder, and a filter screen with smaller meshes is placed at the front end of the screw.
The properties of the modified polypropylene obtained by this process are shown in Table 1.
Comparative example 1
70 parts by mass of a new polypropylene material, 10 parts by mass of an elastomer, 20 parts by mass of talcum powder and 0.2 part by mass of an antioxidant are uniformly mixed and then extruded and granulated by a double-screw extruder at the temperature of 180-240 ℃; a filter screen with larger meshes is placed in a hopper of the extruder, and a filter screen with smaller meshes is placed at the front end of the screw.
The properties of the modified polypropylene obtained by this process are shown in Table 1.
Comparative example 2
Uniformly mixing 60 parts by mass of polypropylene reclaimed material, 10 parts by mass of polypropylene fresh material, 10 parts by mass of elastomer, 20 parts by mass of talcum powder and 0.3 part by mass of antioxidant, and then extruding and granulating by a double-screw extruder at the temperature of 180-240 ℃; a filter screen with larger meshes is placed in a hopper of the extruder, and a filter screen with smaller meshes is placed at the front end of the screw.
The properties of the modified polypropylene obtained by this process are shown in Table 1.
Table 1: performance data.
As can be seen from Table 1, after the chain extender is added, the physical properties of the examples 1, 2 and 4 are similar to those of the comparative example 1, the physical properties of the example 3 are lower than those of the comparative example 1 due to the fact that the chain extender is added, the physical properties of the examples 1, 2, 3 and 4 are obviously improved compared with those of the comparative example 2, and the notch impact toughness is improved by 45% -114%; the flexural modulus is improved by 16-28%, and the tensile strength is improved by 23-41%.
Claims (8)
1. A preparation method for preparing a high-performance polypropylene modified material by utilizing a reclaimed material is characterized by comprising the following steps of: uniformly mixing 30-60 parts by mass of a polypropylene reclaimed material, 10-60 parts by mass of a polypropylene fresh material, 6-20 parts by mass of an elastomer toughening agent, 5-20 parts by mass of inorganic rigid particles, 0.5-2 parts by mass of a chain extender and 0.2-0.6 part by mass of an antioxidant, and extruding and granulating the mixture by a double-screw extruder at the temperature of 180-240 ℃ to obtain the polypropylene modified material.
2. The method of claim 1, wherein: the polypropylene regenerated material is automobile interior and exterior plastic parts such as automobile bumpers, instrument panels, door panels, stand columns and the like; electric appliance shells such as a washing machine barrel material, a storage battery shell, an air conditioner shell and the like; at least one of ton bag, food packaging bag, shopping bag, plastic film, etc.
3. The method of claim 1, wherein: the novel polypropylene material is one or a plurality of polypropylene copolymers, polypropylene homopolymers and block polypropylene.
4. The method of claim 1, wherein: the toughening agent is at least one of POE, EPDM, SBS and PE.
5. The method of claim 1, wherein: the inorganic rigid particles are at least one of talcum powder, calcium carbonate, wollastonite, kaolin and mica powder.
6. The method of claim 5, wherein: the particle size of the inorganic rigid particles is 0.1-100 microns.
7. The method of any one of claims 1 to 6, wherein: the chain extender is a chain extender with epoxy active functional groups.
8. The method of any one of claims 1 to 6, wherein: the screen mesh in the hopper of the extruder is larger than that of the screen mesh at the front end of the screw.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210548262.6A CN115011030A (en) | 2022-05-20 | 2022-05-20 | Preparation method for preparing high-performance polypropylene modified material by utilizing reclaimed material |
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| CN202210548262.6A CN115011030A (en) | 2022-05-20 | 2022-05-20 | Preparation method for preparing high-performance polypropylene modified material by utilizing reclaimed material |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115806710A (en) * | 2023-01-04 | 2023-03-17 | 中化泉州石化有限公司 | Method for improving performance of partially-degraded cast film polypropylene resin powder |
| CN115819884A (en) * | 2022-12-13 | 2023-03-21 | 江苏尚艾新材料科技有限公司 | Renewable polypropylene composite material for automobile bumper and preparation method thereof |
| CN116003908A (en) * | 2022-12-29 | 2023-04-25 | 重庆普利特新材料有限公司 | Special environment-friendly modified regenerated polypropylene composite material for closed-loop recycled flame-treatment-free paint spraying bumper and preparation method thereof |
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| CN102875897A (en) * | 2012-10-12 | 2013-01-16 | 南京金杉汽车工程塑料有限责任公司 | Material prepared from polypropylene regeneration material and specially used for automobile bumper |
| CN104861291A (en) * | 2015-05-09 | 2015-08-26 | 雷刚 | Environment-friendly antistatic polypropylene plastic inspection well material restored and modified by waste polypropylene molecular chain and preparation method for environment-friendly antistatic polypropylene plastic inspection well material |
| KR20160027285A (en) * | 2014-08-28 | 2016-03-10 | 한경대학교 산학협력단 | Recycled polypropylene reinforced strength |
| KR20170070732A (en) * | 2015-12-14 | 2017-06-22 | 현대자동차주식회사 | A long fiber reinforced polypropylene resin composition |
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2022
- 2022-05-20 CN CN202210548262.6A patent/CN115011030A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102875897A (en) * | 2012-10-12 | 2013-01-16 | 南京金杉汽车工程塑料有限责任公司 | Material prepared from polypropylene regeneration material and specially used for automobile bumper |
| KR20160027285A (en) * | 2014-08-28 | 2016-03-10 | 한경대학교 산학협력단 | Recycled polypropylene reinforced strength |
| CN104861291A (en) * | 2015-05-09 | 2015-08-26 | 雷刚 | Environment-friendly antistatic polypropylene plastic inspection well material restored and modified by waste polypropylene molecular chain and preparation method for environment-friendly antistatic polypropylene plastic inspection well material |
| KR20170070732A (en) * | 2015-12-14 | 2017-06-22 | 현대자동차주식회사 | A long fiber reinforced polypropylene resin composition |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115819884A (en) * | 2022-12-13 | 2023-03-21 | 江苏尚艾新材料科技有限公司 | Renewable polypropylene composite material for automobile bumper and preparation method thereof |
| CN116003908A (en) * | 2022-12-29 | 2023-04-25 | 重庆普利特新材料有限公司 | Special environment-friendly modified regenerated polypropylene composite material for closed-loop recycled flame-treatment-free paint spraying bumper and preparation method thereof |
| CN115806710A (en) * | 2023-01-04 | 2023-03-17 | 中化泉州石化有限公司 | Method for improving performance of partially-degraded cast film polypropylene resin powder |
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