CN113831635B - Weather-resistant glass fiber reinforced polypropylene composition and preparation method thereof - Google Patents
Weather-resistant glass fiber reinforced polypropylene composition and preparation method thereof Download PDFInfo
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- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
- C08J5/0405—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres
- C08J5/043—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres with glass fibres
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- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/10—Homopolymers or copolymers of propene
- C08J2323/12—Polypropene
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- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
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- C08J2451/00—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers
- C08J2451/06—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/003—Additives being defined by their diameter
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
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- C08K2201/004—Additives being defined by their length
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- C—CHEMISTRY; METALLURGY
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
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- C08K5/13—Phenols; Phenolates
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/17—Amines; Quaternary ammonium compounds
- C08K5/18—Amines; Quaternary ammonium compounds with aromatically bound amino groups
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/14—Glass
Abstract
The invention discloses a weather-resistant glass fiber reinforced polypropylene composition which is prepared from the following components in parts by weight: 100 parts of polypropylene, 30-60 parts of alkali-free glass fiber, 5-10 parts of compatilizer, 1-2 parts of polyethylene wax, 0.3-0.5 part of N, N-diphenyl-p-phenylenediamine and 0.3-0.5 part of antioxidant 1790. The invention also discloses a preparation method of the weather-resistant glass fiber reinforced polypropylene composition. The antioxidant 1790 and the auxiliary antioxidant N, N-diphenyl-p-phenylenediamine are added to have synergistic effect, so that the long-term anti-aging performance is excellent. In the aspect of long-term weather resistance, the compound antioxidant has more advantages than the antioxidant 1010 and the antioxidant 168, and the light stabilizer 3808PP5 and the light stabilizer 531 in the prior art.
Description
Technical Field
The invention belongs to the technical field of polymer composite materials, and particularly relates to a weather-resistant glass fiber reinforced polypropylene composition and a preparation method thereof.
Background
Polypropylene (PP) is a crystalline polymer with a regular structure, is a white granular material or powder, is a tasteless, nontoxic, lightweight thermoplastic resin, has the advantages of easy processing, good impact strength, flexibility and electrical insulation, and the like, and is widely applied to the fields of automobile industry, household appliances, electronics, packaging, building materials, furniture, and the like.
The glass fiber reinforced polypropylene is a light high-strength engineering structural material, and because the fiber has good mechanical property, when an external force acts, the load is transmitted through the fiber, so that the tensile, bending and impact strength, creep resistance and fatigue resistance of the glass fiber reinforced polypropylene are far better than those of non-reinforced polypropylene, and the glass fiber reinforced polypropylene has the advantages of excellent rigidity, toughness, warping resistance and the like. The glass fiber reinforced polypropylene has wide application, and about 50 percent of the glass fiber reinforced polypropylene is applied to the automobile industry in Western Europe. The performance of glass fiber reinforced polypropylene depends mainly on the following factors: (1) glass fiber content: generally, the higher the glass fiber content is, the higher the mechanical properties of the glass fiber reinforced polypropylene are, but the glass fiber content is too high, which causes severe abrasion to processing equipment, and easily causes the brittleness and density of the material to be increased; meanwhile, when the content of the glass fiber exceeds a certain critical value (50 wt%), the mechanical property is reduced along with the further increase of the content of the glass fiber; (2) the length of the glass fiber in the resin matrix; (3) the bonding force between the glass fiber and the resin matrix and the dispersion uniformity thereof.
The glass fiber reinforced polypropylene composite material becomes a widely adopted composite material due to excellent mechanical property and high cost performance. In order to realize outdoor use of the glass fiber reinforced material, how to realize excellent mechanical properties of the glass fiber composite material and realize ultraviolet aging resistance becomes a problem to be solved urgently.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a weather-resistant glass fiber reinforced polypropylene composition and a preparation method thereof.
The purpose of the invention is realized by the following technical scheme:
the weather-resistant glass fiber reinforced polypropylene composition is prepared from the following components in parts by weight:
as a preferred technical scheme, the melt index of the polypropylene under the conditions of 230 ℃ and 2.16kg of load is 60-100g/10min.
As a preferred technical scheme, the alkali-free glass fiber is chopped alkali-free glass fiber; the length of the chopped alkali-free glass fiber is 3-5mm, and the diameter of a monofilament is 10-15 mu m.
As a preferable technical scheme, the compatilizer is maleic anhydride grafted polypropylene (PP-G); further preferably, the grafting ratio of the maleic anhydride grafted polypropylene is 1.0% -1.5%.
The invention also aims to provide a preparation method of the weather-resistant glass fiber reinforced polypropylene composition, which comprises the following steps:
(1) Adding 100 parts of polypropylene, 5-10 parts of compatilizer, 0.3-0.5 part of N, N-diphenyl-p-phenylenediamine, 0.3-0.5 part of antioxidant 1790 and 1-2 parts of polyethylene wax into a high-speed mixer, and mixing to obtain a mixture; the rotating speed of the high-speed mixer is 300-500rpm, the mixing temperature is 30-50 ℃, and the mixing time is 1-2 minutes;
(2) Adding the mixture obtained in the step (1) from a feeding port of a double-screw extruder, adding 30-60 parts of alkali-free glass fiber from a side feeding port of the double-screw extruder, and performing extrusion granulation by the double-screw extruder to obtain the weather-resistant glass fiber reinforced polypropylene composition; the extrusion temperature of the double-screw extruder is 180-230 ℃.
Compared with the prior art, the invention has the beneficial effects that:
the antioxidant 1790 and the auxiliary antioxidant N, N-diphenyl-p-phenylenediamine are added to have synergistic effect, so that the long-term anti-aging performance is excellent. In the aspect of long-term weather resistance, the compound antioxidant has more advantages than the antioxidant 1010 and the antioxidant 168, and the light stabilizer 3808PP5 and the light stabilizer 531 in the prior art.
Detailed Description
The present invention will be further described with reference to the following examples. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The types and suppliers of the reagents used in the following examples or comparative examples are as follows:
the polypropylene is BX3800 of SK company in Korea, and the melt index under the conditions of temperature 230 ℃ and load of 2.16kg is 30g/10min;
the producer of the chopped alkali-free glass fiber is Taishan glass fiber company, the length of the glass fiber is 3mm, and the diameter of a monofilament is 11 mu m.
The maleic anhydride grafted polypropylene was manufactured as Satbisall, trade name SH-352K.
Polyethylene wax was manufactured by HONEYWELL, brand RL-657.
The N, N-diphenyl-p-phenylenediamine manufacturer is Shanghai Michelin Biotechnology.
Antioxidant 1790, light stabilizer 3808PP5 and light stabilizer 531 are available from Cyanut chemical.
It should be noted that the types and suppliers of reagents used in the following examples are only for the purpose of describing the sources and components of the reagents used in the experiments of the present invention, so as to fully disclose the reagents, and do not indicate that the present invention cannot be realized by using other reagents of the same type or other reagents supplied by other suppliers.
Example 1
(1) 100 parts of polypropylene, 5 parts of maleic anhydride grafted polypropylene, 0.3 part of N, N-diphenyl-p-phenylenediamine, 1790.3 parts of antioxidant and 1 part of polyethylene wax are firstly added into a high-speed mixer to be mixed for 1 minute at the rotating speed of 300rpm and the temperature of 30 ℃;
(2) Adding the mixture prepared in the step (1) from a feeding port of a double-screw extruder, adding 30 parts of short alkali-free glass fiber from a side feeding port of the double-screw extruder, and then extruding and granulating by the double-screw extruder to obtain the weather-resistant glass fiber reinforced polypropylene composition; the extrusion temperature of each extrusion interval of the double-screw extruder is 180 ℃,190 ℃,195 ℃,195 ℃,200 ℃,205 ℃ and 210 ℃ respectively.
Example 2
(1) 100 parts of polypropylene, 10 parts of maleic anhydride grafted polypropylene, 0.5 part of N, N-diphenyl-p-phenylenediamine, 1790.5 parts of antioxidant and 2 parts of polyethylene wax are firstly added into a high-speed mixer to be mixed for 2 minutes at the rotating speed of 500rpm and the temperature of 50 ℃;
(2) Adding the mixture prepared in the step (1) from a feeding port of a double-screw extruder, adding 60 parts of short alkali-free glass fiber from a side feeding port of the double-screw extruder, and then extruding and granulating by the double-screw extruder to obtain the weather-resistant glass fiber reinforced polypropylene composition; the extrusion temperatures of the extrusion sections of the double-screw extruder are 180 ℃,190 ℃,200 ℃,210 ℃,220 ℃,225 ℃ and 230 ℃ respectively.
Example 3
(1) 100 parts of polypropylene, 8 parts of maleic anhydride grafted polypropylene, 0.4 part of N, N-diphenyl-p-phenylenediamine, 1790.4 parts of antioxidant and 2 parts of polyethylene wax are firstly added into a high-speed mixer to be mixed for 2 minutes at the rotating speed of 400rpm and the temperature of 40 ℃;
(2) Adding the mixture prepared in the step (1) from a feeding port of a double-screw extruder, adding 40 parts of short alkali-free glass fiber from a side feeding port of the double-screw extruder, and then extruding and granulating by the double-screw extruder to obtain the weather-resistant glass fiber reinforced polypropylene composition; the extrusion temperature of each extrusion interval of the double-screw extruder is 180 ℃,190 ℃,200 ℃,210 ℃,220 ℃,225 ℃ and 230 ℃ respectively.
Comparative example 1
(1) 100 parts of polypropylene, 8 parts of maleic anhydride grafted polypropylene, 0.4 part of antioxidant 1010, 0.4 part of antioxidant 168 and 2 parts of polyethylene wax are firstly added into a high-speed mixer to be mixed for 2 minutes at the rotating speed of 400rpm and the temperature of 40 ℃;
(2) Adding the mixture prepared in the step (1) from a feeding port of a double-screw extruder, adding 40 parts of short alkali-free glass fiber from a side feeding port of the double-screw extruder, and then extruding and granulating by the double-screw extruder to obtain the weather-resistant glass fiber reinforced polypropylene composition; the extrusion temperature of each extrusion interval of the double-screw extruder is 180 ℃,190 ℃,200 ℃,210 ℃,220 ℃,225 ℃ and 230 ℃ respectively.
Comparative example 2
(1) 100 parts of polypropylene, 8 parts of maleic anhydride grafted polypropylene, 0.4 part of antioxidant 1098, 0.4 part of antioxidant 168 and 2 parts of polyethylene wax are firstly added into a high-speed mixer to be mixed for 2 minutes at the rotating speed of 400rpm and the temperature of 40 ℃;
(2) Adding the mixture prepared in the step (1) from a feeding port of a double-screw extruder, adding 40 parts of short alkali-free glass fiber from a side feeding port of the double-screw extruder, and then extruding and granulating by the double-screw extruder to obtain the weather-resistant glass fiber reinforced polypropylene composition; the extrusion temperature of each extrusion interval of the double-screw extruder is 180 ℃,190 ℃,200 ℃,210 ℃,220 ℃,225 ℃ and 230 ℃ respectively.
Comparative example 3
(1) 100 parts of polypropylene, 8 parts of maleic anhydride grafted polypropylene, 0.4 part of antioxidant 1098, 0.4 part of light stabilizer 3808PP5 and 2 parts of polyethylene wax are firstly added into a high-speed mixer to be mixed for 2 minutes at the rotating speed of 400rpm and the temperature of 40 ℃;
(2) Adding the mixture prepared in the step (1) from a feeding port of a double-screw extruder, adding 40 parts of short alkali-free glass fiber from a side feeding port of the double-screw extruder, and then extruding and granulating by the double-screw extruder to obtain the weather-resistant glass fiber reinforced polypropylene composition; the extrusion temperature of each extrusion interval of the double-screw extruder is 180 ℃,190 ℃,200 ℃,210 ℃,220 ℃,225 ℃ and 230 ℃ respectively.
Comparative example 4
(1) 100 parts of polypropylene, 8 parts of maleic anhydride grafted polypropylene, 531.4 parts of a light stabilizer, 3808PP5.4 parts of the light stabilizer and 2 parts of polyethylene wax are firstly added into a high-speed mixer to be mixed for 2 minutes at the rotating speed of 400rpm and the temperature of 40 ℃;
(2) Adding the mixture prepared in the step (1) from a feeding port of a double-screw extruder, adding 40 parts of short alkali-free glass fiber into a side feeding port of the double-screw extruder, and then extruding and granulating by the double-screw extruder to obtain the weather-resistant glass fiber reinforced polypropylene composition; the extrusion temperature of each extrusion interval of the double-screw extruder is 180 ℃,190 ℃,200 ℃,210 ℃,220 ℃,225 ℃ and 230 ℃ respectively.
The products obtained in the above examples or comparative examples were injection-molded into test specimens according to ISO standards, and the test standards were as follows after the injection-molded test specimens were stabilized at 23 ℃ and 50% relative humidity for 48 hours:
tensile Strength according to ISO 527, the specimen size is 170mm 10mm 4mm,5mm/min tensile speed. Notched izod impact strength pendulum bob according to ISO 180, spline size 80 x 10 x 4mm, type 1a notch, 5.5J energy. The heat resistance is the retention rate of the tensile strength performance before and after aging at 150 ℃ for 1000h, the weather resistance is the retention rate of the tensile strength performance before and after aging for 2000h according to the standard of xenon lamp aging ISO4892.2, and the performance test results are shown in Table 1.
TABLE 1 results of measuring properties of products obtained in examples and comparative examples
As can be seen from the table 1, the antioxidant 1790 and the auxiliary antioxidant N, N-diphenyl-p-phenylenediamine are added to have synergistic effect, so that the long-term aging resistance is excellent. In the aspect of long-term weather resistance, the compound antioxidant has more advantages than the antioxidant 1010 and the antioxidant 168, and the light stabilizer 3808PP5 and the light stabilizer 531 in the prior art.
The embodiments described above are intended to facilitate one of ordinary skill in the art in understanding and using the present invention. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the embodiments described herein, and those skilled in the art should understand that they can make improvements and modifications without departing from the scope of the present invention.
Claims (8)
1. A weather-resistant glass fiber reinforced polypropylene composition is characterized in that: the composition is prepared from the following components in parts by weight:
2. the weatherable glass fiber reinforced polypropylene composition according to claim 1, wherein: the melt index of the polypropylene under the conditions of 230 ℃ and 2.16kg of load is 60-100g/10min.
3. The weatherable glass fiber reinforced polypropylene composition according to claim 1, wherein: the alkali-free glass fiber is chopped alkali-free glass fiber; the length of the chopped alkali-free glass fiber is 3-5mm, and the diameter of each monofilament is 10-15 mu m.
4. The weatherable glass fiber reinforced polypropylene composition according to claim 1, wherein: the compatilizer is maleic anhydride grafted polypropylene.
5. The weatherable glass fiber reinforced polypropylene composition according to claim 4, wherein: the grafting rate of the maleic anhydride grafted polypropylene is 1.0-1.5%.
6. The method for preparing the weatherable glass fiber reinforced polypropylene composition according to any one of claims 1 to 5, wherein the method comprises the following steps: the method comprises the following steps:
(1) 100 parts of polypropylene, 5-10 parts of compatilizer, 0.3-0.5 part of N, N-diphenyl-p-phenylenediamine, 0.3-0.5 part of antioxidant 1790 and 1-2 parts of polyethylene wax are added into a high-speed mixer and mixed to obtain a mixture;
(2) And (2) adding the mixture obtained in the step (1) from a feeding port of a double-screw extruder, adding 30-60 parts of alkali-free glass fiber from a side feeding port of the double-screw extruder, and performing extrusion granulation by the double-screw extruder to obtain the weather-resistant glass fiber reinforced polypropylene composition.
7. The method of claim 6, wherein: in the step (1), the rotating speed of the high-speed mixer is 300-500rpm, the mixing temperature is 30-50 ℃, and the mixing time is 1-2 minutes.
8. The method of claim 6, wherein: in the step (2), the extrusion temperature of the double-screw extruder is 180-230 ℃.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| ZA887069B (en) * | 1987-09-25 | 1989-05-30 | Uniroyal Chem Co Inc | Polypropylene stabilized against oxidative degradation with mixtures of diarylemine derivatives and sterically hindered phenols |
| WO1994022988A1 (en) * | 1993-04-05 | 1994-10-13 | Mobil Oil Corporation | Improved lubricant performance from additive-treated fuels |
| TW300246B (en) * | 1995-04-11 | 1997-03-11 | Mitsui Petroleum Chemicals Ind | |
| CN102010548A (en) * | 2010-09-27 | 2011-04-13 | 松下家电研究开发（杭州）有限公司 | Glass fiber reinforced polypropylene material and hydrolysis resistance and oxidation resistance evaluation method thereof |
| CN103012968A (en) * | 2012-11-21 | 2013-04-03 | 合肥杰事杰新材料股份有限公司 | Weather-resistant glass fiber reinforced polypropylene composite and preparation method thereof |
| CN106928625A (en) * | 2015-12-31 | 2017-07-07 | 内蒙古伊利实业集团股份有限公司 | A kind of bottle stage polypropylene material and preparation method and application |
| CN105949595A (en) * | 2016-05-20 | 2016-09-21 | 上海至正道化高分子材料股份有限公司 | 150 DEG C-radiation-resistant crosslinked low-smoke halogen-free flame-retardant cable material |
| CN108250654A (en) * | 2018-01-18 | 2018-07-06 | 苏州银禧科技有限公司 | A kind of low floating fine fiberglass reinforced fire retardant polypropylene material |
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