CN115011032A - Preparation method of polypropylene composite material with low glossiness and high toughness - Google Patents

Preparation method of polypropylene composite material with low glossiness and high toughness Download PDF

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CN115011032A
CN115011032A CN202210548271.5A CN202210548271A CN115011032A CN 115011032 A CN115011032 A CN 115011032A CN 202210548271 A CN202210548271 A CN 202210548271A CN 115011032 A CN115011032 A CN 115011032A
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mass
parts
rubber
interval
composite material
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牛建勋
吴锡忠
沈玉海
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Nanjing Jinshan Automobile Engineering Plastic Co ltd
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Nanjing Jinshan Automobile Engineering Plastic Co ltd
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    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02Compositions 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
    • C08L23/10Homopolymers or copolymers of propene
    • C08L23/12Polypropene

Abstract

The invention provides a preparation method of a low-gloss and high-toughness polypropylene composite material, which is prepared by uniformly stirring 40-90 parts by mass of polypropylene resin, 5-30 parts by mass of inorganic rigid particles, 5-30 parts by mass of a flatting agent and 0.2-0.4 part by mass of an antioxidant in a stirrer, and extruding and granulating the mixture by a double-screw extruder, wherein the flatting agent is polymer graft rubber with an epoxy functional group, the graft phase of the polymer graft rubber is a polymer with an epoxy functional group monomer molecule, a copolymer with one of the epoxy functional group monomer molecules and a monomer molecule without an epoxy optical group, and the rubber matrix of the polymer graft rubber is one of ethylene propylene diene monomer, ethylene-octylene elastomer, ethylene-butylene elastomer, styrene-butadiene rubber, nitrile rubber and silicone rubber. The low-gloss polypropylene composite material is prepared by adding the flatting agent, and the modified polypropylene not only has lower gloss, but also has higher impact toughness and excellent comprehensive mechanical property.

Description

Preparation method of polypropylene composite material with low glossiness and high toughness
Technical Field
The invention relates to a preparation method of modified polypropylene, in particular to a preparation method of a polypropylene composite material with low glossiness and high toughness.
Background
Polypropylene (PP) has low density, excellent mechanical properties, good stress cracking resistance, fatigue yield resistance, chemical resistance, low cost, easy processing and forming, easy recovery, and recycling, and has been widely used, especially in the automotive industry, home appliances, and machinery fields. However, polypropylene materials have poor low temperature resistance and low rigidity, and cannot meet the use requirements of automobile interior and exterior parts, so that the polypropylene materials need to be modified. The main modification method of polypropylene is elastomer toughening polypropylene modification; modifying the inorganic filler filled reinforced polypropylene; and the research on the modification of the toughening and strengthening polypropylene by utilizing the combined action of the polypropylene, the inorganic filler and the elastomer.
With the development of the automobile industry, people put higher demands on automobiles: light weight, energy conservation, beauty, safety, environmental protection and the like, and the requirement on the comfort in the cab is higher and higher. If the gloss of the trim in the cockpit is high, there will be a strong reflection of light, thus affecting the comfort of the driver. Therefore, the automotive upholstery is required to have low glossiness. The method of removing gloss by surface embossing has been put into practice but requires a separate step, increasing costs, and the subsequent abrasion also removes the embossed matte surface, thereby allowing gloss reproduction.
In addition, low gloss can be obtained by spraying a matte paint on the surface of the product, but the production cost is high, the use requirement cannot be met sometimes, and the product may need to be reprocessed along with the prolonging of the production time.
Researches show that the glossiness of the polypropylene composite material can be reduced by adding a finely-divided filler such as silica, silicate, aluminate or other inorganic fillers, however, the glossiness is not obviously reduced due to less adding amount of the inorganic fillers, and the use requirement cannot be met; too much addition will result in a decrease in the physical properties of the article, especially a more pronounced decrease in impact strength, with a corresponding heat change.
Disclosure of Invention
1. The technical problem to be solved is as follows:
the polypropylene material has poor low-temperature resistance and low rigidity, cannot meet the use requirements of automotive interior and exterior trim parts, can obtain low glossiness by spraying the matte paint on the surface of a product, but has high production cost, sometimes cannot meet the use requirements, and may need to be reprocessed along with the extension of production time.
2. The technical scheme is as follows:
in order to solve the problems, the invention provides a preparation method of a low-gloss and high-toughness polypropylene composite material, which comprises the steps of uniformly stirring 40-90 parts by mass of polypropylene resin, 5-30 parts by mass of inorganic rigid particles, 5-30 parts by mass of a delustering agent and 0.2-0.4 part by mass of an antioxidant in a stirrer, and then extruding and granulating at the processing temperature of 180-230 ℃ through a double-screw extruder to prepare the low-gloss and high-toughness polypropylene composite material, wherein the delustering agent is polymer grafted rubber with epoxy functional groups.
50-80 parts by mass of polypropylene resin; 10-25 parts by mass of inorganic rigid particles; the matting agent is 10 to 25 parts by mass.
The grafted rubber with the epoxy functional group polymer has a grafted phase which is a copolymer of a polymer with epoxy functional group monomer molecules, one of the epoxy functional group monomer molecules and a monomer molecule without an epoxy optical group, and a rubber matrix which is one of ethylene propylene diene monomer, ethylene-octylene elastomer, ethylene-butylene elastomer, styrene butadiene rubber, butadiene acrylonitrile rubber and silicon rubber.
The monomer with the epoxy functional group is any one of glycidyl acrylate, glycidyl methacrylate and alkyl glycidyl ether; the monomer without epoxy functional group is any one of ethylene and propylene.
The particle size of the rubber matrix is 0.05 microns to 30 microns.
The particle size of the rubber matrix is 0.05 to 10 microns.
3. Has the advantages that:
the low-gloss polypropylene composite material is prepared by adding the flatting agent, and the modified polypropylene not only has lower gloss, but also has higher impact toughness and excellent comprehensive mechanical property.
Detailed Description
The present invention will be described in detail with reference to examples.
A preparation method of a low-gloss and high-toughness polypropylene composite material comprises the steps of uniformly stirring 40-90 parts by mass of polypropylene resin, 5-30 parts by mass of inorganic rigid particles, 5-30 parts by mass of a delustering agent and 0.2-0.4 part by mass of an antioxidant in a stirrer, and then extruding and granulating at the processing temperature of 180-230 ℃ through a double-screw extruder, wherein the delustering agent is polymer grafted rubber with epoxy functional groups.
According to the invention, the method optimizes the advantages that the addition of the flatting agent is less, so that the reduction of the glossiness is less, the flatting requirement cannot be met, the cost is increased when the addition of the flatting agent is more, and the physical property of the polypropylene composite material is reduced.
In the following examples, the polypropylene is K8003 from yanshan petrochemical production; the inorganic rigid particles are talcum powder produced by Aihai talcum powder Limited of sea cities of Liaoning province, and the antioxidant is antioxidant 1010 produced by Nicoti Xinxiu chemical products Limited; the elastomer is POE8137 produced by the Dow chemical method; the delustering agent 1 is an acrylate-glycidyl methacrylate grafted ethylene-octene elastomer; the flatting agent 2 is glycidyl methacrylate grafted butadiene-styrene rubber; the delustering agent 3 is alkyl glycidyl ether grafted ethylene propylene diene monomer.
Flexural properties were measured according to GB/T9341-2000, impact properties GB/T1843-1996, tensile properties GB1040-92, melt flow rate GB/T3682-2000, gloss was measured at ambient temperature using a Konika-Menten multigloss 268 gloss Meter (60 ℃).
The grafting process comprises the following steps:
the delustering agent 1 is an acrylate-glycidyl methacrylate grafted ethylene-octene elastomer: fully and uniformly mixing 30 parts by mass of acrylic ester-glycidyl methacrylate, 70 parts by mass of an ethylene-octene elastomer matrix, 0.3 part by mass of initiator dicumyl peroxide, 3 parts by mass of co-grafting monomer styrene and 1 part by mass of cross-linking inhibitor triphenyl phosphite, and extruding the mixture through a double-screw extruder at the processing temperature of 160-200 ℃ to obtain a grafted product.
The matting agent 2 is glycidyl methacrylate grafted butadiene-styrene rubber: fully and uniformly mixing 30 parts by mass of glycidyl methacrylate, 70 parts by mass of a butadiene-styrene rubber matrix, 0.3 part by mass of dicumyl peroxide as an initiator, 3 parts by mass of co-grafting monomer styrene and 1 part by mass of triphenyl phosphite as a crosslinking inhibitor, and extruding the mixture through a double-screw extruder at the processing temperature of 160-200 ℃ to obtain a grafted product.
The delustering agent 3 is alkyl glycidyl ether grafted ethylene propylene diene monomer: 30 parts by mass of alkyl glycidyl ether, 70 parts by mass of an ethylene propylene diene monomer matrix, 0.3 part by mass of dicumyl peroxide as an initiator, 3 parts by mass of a co-grafting monomer styrene and 1 part by mass of triphenyl phosphite as a crosslinking inhibitor are fully and uniformly mixed, and then the mixture is extruded by a double-screw extruder at a processing temperature of 160-200 ℃ to obtain a grafted product.
Example 1
Mixing 90 parts by mass of polypropylene resin, 20 parts by mass of talcum powder, 10 parts by mass of flatting agent 1 and 0.3 part by mass of antioxidant in a high-speed mixer for 5 minutes, and then extruding and granulating on a double-screw extruder, wherein the temperature of the extruder is as follows: the polypropylene composite material with low glossiness and high toughness is extruded and molded at the temperature of 185 ℃ in a first interval, 195 ℃ in a second interval, 195 ℃ in a third interval, 200 ℃ in a fourth interval, a fifth interval, a sixth interval, a seventh interval and an eighth interval and 195 ℃ in a ninth interval.
The polypropylene composite material with low glossiness and high toughness is prepared by the process. The properties are shown in Table 1.
Example 2
Mixing 70 parts by mass of polypropylene resin, 5 parts by mass of talcum powder, 5 parts by mass of flatting agent 1 and 0.3 part by mass of antioxidant in a high-speed mixer for 5 minutes, and then extruding and granulating on a double-screw extruder, wherein the temperature of the extruder is as follows: the polypropylene composite material with low glossiness and high toughness is extruded and molded at the temperature of 185 ℃ in a first interval, 195 ℃ in a second interval, 195 ℃ in a third interval, 200 ℃ in a fourth interval, a fifth interval, a sixth interval, a seventh interval and an eighth interval and 195 ℃ in a ninth interval.
The polypropylene composite material with low glossiness and high toughness is prepared by the process. The properties are shown in Table 1.
EXAMPLE 3
Mixing 65 parts by mass of polypropylene resin, 20 parts by mass of talcum powder, 15 parts by mass of flatting agent 1 and 0.3 part by mass of antioxidant in a high-speed mixer for 5 minutes, and then extruding and granulating on a double-screw extruder, wherein the temperature of the extruder is as follows: the first interval is 185 ℃, the second interval and the third interval are 195 ℃, the fourth interval, the fifth interval, the sixth interval, the seventh interval and the eighth interval are 200 ℃ and the ninth interval is 195 ℃, and the polypropylene composite material with low glossiness and high toughness is formed by extrusion.
The polypropylene composite material with low glossiness and high toughness is prepared by the process. The properties are shown in Table 1.
Example 4
Mixing 60 parts by mass of polypropylene resin, 10 parts by mass of talcum powder, 20 parts by mass of flatting agent 1 and 0.4 part by mass of antioxidant in a high-speed mixer for 5 minutes, and then extruding and granulating on a double-screw extruder, wherein the temperature of the extruder is as follows: the polypropylene composite material with low glossiness and high toughness is extruded and molded at the temperature of 185 ℃ in a first interval, 195 ℃ in a second interval, 195 ℃ in a third interval, 200 ℃ in a fourth interval, a fifth interval, a sixth interval, a seventh interval and an eighth interval and 195 ℃ in a ninth interval.
The polypropylene composite material with low glossiness and high toughness is prepared by the process. The properties are shown in Table 1.
Example 5
Mixing 40 parts by mass of polypropylene resin, 30 parts by mass of talcum powder, 30 parts by mass of flatting agent 1 and 0.3 part by mass of antioxidant in a high-speed mixer for 5 minutes, and then extruding and granulating on a double-screw extruder, wherein the temperature of the extruder is as follows: the polypropylene composite material with low glossiness and high toughness is extruded and molded at the temperature of 185 ℃ in a first interval, 195 ℃ in a second interval, 195 ℃ in a third interval, 200 ℃ in a fourth interval, a fifth interval, a sixth interval, a seventh interval and an eighth interval and 195 ℃ in a ninth interval.
The polypropylene composite material with low glossiness and high toughness is prepared by the process. The properties are shown in Table 1.
Example 6
Mixing 80 parts by mass of polypropylene resin, 15 parts by mass of talcum powder, 10 parts by mass of flatting agent 2 and 0.3 part by mass of antioxidant in a high-speed mixer for 5 minutes, and then extruding and granulating on a double-screw extruder, wherein the temperature of the extruder is as follows: the first interval is 185 ℃, the second interval and the third interval are 195 ℃, the fourth interval, the fifth interval, the sixth interval, the seventh interval and the eighth interval are 200 ℃ and the ninth interval is 195 ℃, and the polypropylene composite material with low glossiness and high toughness is formed by extrusion.
The polypropylene composite material with low glossiness and high toughness is prepared by the process. The properties are shown in Table 1.
Example 7
Mixing 50 parts by mass of polypropylene resin, 25 parts by mass of talcum powder, 25 parts by mass of flatting agent 3 and 0.4 part by mass of antioxidant in a high-speed mixer for 5 minutes, and then extruding and granulating on a double-screw extruder, wherein the temperature of the extruder is as follows: the first interval is 185 ℃, the second interval and the third interval are 195 ℃, the fourth interval, the fifth interval, the sixth interval, the seventh interval and the eighth interval are 200 ℃ and the ninth interval is 195 ℃, and the polypropylene composite material with low glossiness and high toughness is formed by extrusion.
Comparative example:
mixing 70 parts by mass of polypropylene resin, 20 parts by mass of talcum powder, 10 parts by mass of POE and 0.3 part by mass of antioxidant in a high-speed mixer for 5 minutes, and then extruding and granulating on a double-screw extruder, wherein the temperature of the extruder is as follows: the first interval is 185 ℃, the second interval and the third interval are 195 ℃, the fourth interval, the fifth interval, the sixth interval, the seventh interval and the eighth interval are 200 ℃ and the ninth interval is 195 ℃, and the low-glossiness polypropylene composite material is formed by extrusion.
The low-gloss polypropylene composite material is prepared by the process. The properties are shown in Table 1.
Table 1: performance data.
Figure 610027DEST_PATH_IMAGE001
As can be seen from the table above, the polypropylene composite material with low glossiness and high toughness prepared by the invention has soft glossiness. The low-gloss and high-toughness polypropylene composite material prepared by the invention has an outstanding extinction effect, has high impact toughness, and well maintains physical properties such as flexural modulus, tensile strength and the like, and can be widely applied to the fields of automobiles, electronic appliances and the like.
The main investigation indexes are glossiness and impact toughness, and the lower the glossiness resin is, the lower the glossiness is, the better the effect is; as can be seen from Table 1, examples 1-7 all had lower gloss than the comparative examples, and example 5 had the lowest gloss, but the decay in physical properties was more severe overall, and example 3 was the most effective in view of the combination of gloss and physical properties. It can be seen that the present invention has lower gloss than the prior art.

Claims (6)

1. A preparation method of a polypropylene composite material with low glossiness and high toughness is characterized by comprising the following steps: uniformly stirring 40-90 parts by mass of polypropylene resin, 5-30 parts by mass of inorganic rigid particles, 5-30 parts by mass of a delustering agent and 0.2-0.4 part by mass of an antioxidant in a stirrer, and then extruding and granulating at the processing temperature of 180-230 ℃ through a double-screw extruder to obtain the low-gloss and high-toughness polypropylene composite material, wherein the delustering agent is polymer grafted rubber with epoxy functional groups.
2. The method of claim 1, wherein: 50-80 parts by mass of polypropylene resin; 10 to 25 parts by mass of inorganic rigid particles; the matting agent is 10 to 25 parts by mass.
3. The method of claim 1, wherein; the grafted rubber with the epoxy functional group polymer has a grafted phase which is a copolymer of a polymer with epoxy functional group monomer molecules, one of the epoxy functional group monomer molecules and a monomer molecule without an epoxy optical group, and a rubber matrix which is one of ethylene propylene diene monomer, ethylene-octylene elastomer, ethylene-butylene elastomer, styrene butadiene rubber, butadiene acrylonitrile rubber and silicon rubber.
4. The method of claim 3, wherein: the monomer with the epoxy functional group is any one of glycidyl acrylate, glycidyl methacrylate and alkyl glycidyl ether; the monomer without epoxy functional group is any one of ethylene and propylene.
5. The method of claim 3 or 4, wherein: the particle size of the rubber matrix is 0.05 microns to 30 microns.
6. The method of claim 5, wherein: the particle size of the rubber matrix is 0.05 to 10 microns.
CN202210548271.5A 2022-05-20 2022-05-20 Preparation method of polypropylene composite material with low glossiness and high toughness Withdrawn CN115011032A (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102786768A (en) * 2012-08-09 2012-11-21 南京金杉汽车工程塑料有限责任公司 Low-glossiness ABS (acrylonitrile butadiene styrene) resin and preparation method of low-glossiness ABS resin
CN104558810A (en) * 2014-12-30 2015-04-29 南京金杉汽车工程塑料有限责任公司 Low-gloss polypropylene composite and preparation method thereof
CN108948707A (en) * 2017-05-25 2018-12-07 合肥杰事杰新材料股份有限公司 A kind of low-luster polycarbonate/acrylonitrile-butadiene-styrene alloy material for automobile interiors
CN110607060A (en) * 2019-08-23 2019-12-24 武汉金发科技有限公司 Thermoplastic resin composition, preparation method and application thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102786768A (en) * 2012-08-09 2012-11-21 南京金杉汽车工程塑料有限责任公司 Low-glossiness ABS (acrylonitrile butadiene styrene) resin and preparation method of low-glossiness ABS resin
CN104558810A (en) * 2014-12-30 2015-04-29 南京金杉汽车工程塑料有限责任公司 Low-gloss polypropylene composite and preparation method thereof
CN108948707A (en) * 2017-05-25 2018-12-07 合肥杰事杰新材料股份有限公司 A kind of low-luster polycarbonate/acrylonitrile-butadiene-styrene alloy material for automobile interiors
CN110607060A (en) * 2019-08-23 2019-12-24 武汉金发科技有限公司 Thermoplastic resin composition, preparation method and application thereof

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