CN104693602A - High-flowability high-glossiness no-surface-defect colored metallic-pearl-effect spraying-free polypropylene automobile material and preparation method thereof - Google Patents
High-flowability high-glossiness no-surface-defect colored metallic-pearl-effect spraying-free polypropylene automobile material and preparation method thereof Download PDFInfo
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- C08J3/20—Compounding polymers with additives, e.g. colouring
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- 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
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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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- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/08—Polymer mixtures characterised by other features containing additives to improve the compatibility between two polymers
Abstract
The invention discloses a high-flowability high-glossiness no-surface-defect colored metallic-pearl-effect spraying-free polypropylene automobile material and a preparation method thereof. The material is composed of the following components in percentage by weight: 40.8-74.4% of polypropylene, 2-4% of toughener, 5-20% of mineral master batch, 5-10% of compatilizer, 0.4-0.6% of antioxidant, 0.4-0.6% of light stabilizer, 0.8-2% of lubricant, 6-10% of surface modifier, 3-6% of colored metallic pigment master batch and 3-6% of pearl color master batch. By using the high-melt-flow-rate polypropylene resin, compatilizer, surface modifier, mineral master batch, colored metallic pigment master batch and pearl color master batch, all the components can be uniformly dispersed, so that the material has the advantages of favorable glossiness, favorable pearl effect, favorable metallic sensation and no surface defect, and the appearance effect is infinitely approximate to the painting effect. The material can solve the problem of surface flow mark, tiger skin or fusion wire in the thin-wall complex-structure large-size product without especially customizing the ultrahigh-glossiness mirror surface mold or harsh injection molding technique, and can implement direct color-bearing injection molding of the part.
Description
Technical field
The invention belongs to polymeric material field, relate to a kind of high flowing, high gloss, free of surface defects chromatic metallic pearl effect exempt from spray coating polypropylene automotive material and preparation method thereof.
Background technology
In recent years, automotive industry develops rapidly, especially the output of car and social recoverable amount remain higher speedup always, automotive plastic plays irreplaceable effect meeting in attractive in appearance, safety, lightweight etc., and new auto technology is also just towards more environmental protection, safer, more comfortable and personalized future development simultaneously.In automotive plastic kind, modified polypropylene material has become the kind that in automotive plastic material, consumption is maximum, is also the focus of automotive plastic development and application simultaneously.Little, corrosion-resistant, the counter-bending fatigue strength of polypropylene material wide material sources, density is good, have good electrical property and insulating property, processing characteristics is excellent, cheap, there is through modified polypropylene material the characteristic of a lot of engineering plastics, show excellent mechanical property, thermotolerance etc., its over-all properties is very excellent.
At present, automobile exterior trimming parts is main mainly with spraying paint, and therefore, for automobile exterior trimming parts polypropylene material, not only needs excellent mechanical property, but also needs to have good paint adhesion energy.Because polypropylene material belongs to nonpolar, paint is polarity, the two poor compatibility, therefore, before polypropylene sprays paint, needs the surface modification treatment through series of complex, to strengthen the sticking power of top coat.Process procedure involved by this surface modification treatment is many, technology controlling and process is difficult, simultaneously, priming paint solvent evaporates can cause environmental pollution, and not environmentally, production cost is high, product fraction defective is high and it is difficult to reclaim for whole painting process, therefore, find and a kind ofly alternative exempt from the development trend that spray material is just becoming future automobile exterior trimming parts, particularly some thin-walleds, complex structure, outward appearance and color require higher full-sized car exterior trimming parts, very urgent especially.
Chinese patent literature
cN 201210036011.6, applying date 2012-02-16disclose a kind of polypropene composition that there is the glossy metal-like of paint and exempt to spray, said composition be by the polypropylene of 50 ~ 99.8%, 0 ~ 20% elastomerics, the talcum powder of 0 ~ 30%, the flake aluminum of 0.1 ~ 2% and 0.1 ~ 2% color and luster brightener prepare, the mass ratio of flake aluminum wherein and color and luster brightener is 1:(2 ~ 5).This patent is only invented a kind of polypropene composition with the glossy and metal-like of paint, does not have high flowing and color pearl effect, and also can be severely limited in practical application.
The weak point of this patent formulation is not use compatilizer, lubrication dispersing agent, oxidation inhibitor in its formula system.Because do not use compatilizer can affect talcum powder, flake aluminum, color and luster brightener and polyacrylic consistency in formula system, thus glossy and metal-like can produce considerable influence to paint; What do not use lubrication dispersing agent can affect between talcum powder in formula system, flake aluminum, color and luster brightener is dispersed, thus glossy and metal-like can produce considerable influence to paint; Do not use oxidation inhibitor can affect the metallic aluminium powder in formula system, polyacrylic thermal oxidative aging, thus considerable influence can be produced to the use range of material, in sum, the appearance effect of this polypropene composition effect of comparatively spraying paint has larger gap, its range of application is severely limited, thus existing defects, requires further improvement.
Chinese patent literature
cN 201210509606.9, applying date 2012-12-04, disclose a kind of PP material having high gloss, metal or pearly-lustre flicker effect and exempt to spray, it is made up of the material of following weight percent: PP 97-99%, irgasfos 168 0.1-0.3%, antioxidant 1010 0.1-0.5%, lubrication dispersing agent TAF 0.1-1%, effect pigment 0.3-1.5%.This patent has just been invented one and has been exempted from spraying PP material, but in solution goods weld bond and current mark problem, need to coordinate high light mirror surface mould and higher mould temperature condition of molding, have strict restriction to mould and condition of molding, can be severely limited in practical application.
The weak point of this patent formulation is not use high melt flow rate (MFR) PP and compatilizer in its formula system, melt flow rate (MFR) in its formula system is 9-11g/10min, belong to low melt flow speed range, can affect and realize homogenous plasticized between each component, thus considerable influence can be produced to high gloss and outward appearance; Do not use compatilizer can affect effect pigment in formula system and polyacrylic consistency, thus considerable influence can be produced to metal or pearl effect, in sum, the surface gloss of this PP material, metal or pearl effect and outward appearance effect of comparatively spraying paint has larger gap.If die design and Shooting Technique cannot adjust, its surface imperfection cannot effectively be solved, thus make material will be difficult to be used.
Chinese patent literature
cN 201310535116.9, applying date 2013-10-31disclose a kind of have paint glossy argentine texture exempt from spray modified polypropylene material, it is made up of the material of following weight percent: polypropylene 78.3% ~ 94.4%, elastomerics: 0 ~ 20%, metal powder: 0.2% ~ 0.7%, auxiliary agent: 0.4% ~ 1%.Although this patent has been invented one and exempted to spray modified polypropylene material, the spherical or bar-shaped metal powder added in its formula cannot solve the problem that it can produce tiger fur line in injection moulding process, also can be severely limited in practical application.
The weak point of this patent formulation is not use the metal powder of sheet structure, high melt flow rate polypropylene and compatilizer in its formula system.Because will realize painting glossy and argentine texture, light is incident on article surface must be fully formed total reflection.According to light reflection principle, when there is a large amount of refractions or diffuse-reflectance when light is incident on bar-shaped or spherical surface, cannot total reflection be realized, thus can to painting glossy and argentine texture generation considerable influence.And the melt flow rate (MFR) in this patent formulation system is 20-40g/10min, belong to middle low melt flow speed range, can affect and realize homogenous plasticized between each component, thus affect high gloss and outward appearance; Do not use compatilizer can affect effect pigment in formula system and polyacrylic consistency, thus glossy and argentine texture can produce considerable influence to paint, its range of application can be severely limited, thus existing defects, requires further improvement.
Summary of the invention
Technical problem to be solved by this invention is, for deficiency of the prior art, a kind of high flowing is provided, high gloss, the chromatic metallic pearl effect of free of surface defects exempts from spray coating polypropylene automotive material and preparation method thereof, adopt high melt flow rate polypropylene resin, toughner, mineral master batch, compatilizer, surface-modifying agent, chromatic metallic pigment master batch, the components such as pearly-lustre Masterbatch, this preparation method does not need specific customization superelevation light mirror surface mould and harsh Shooting Technique, namely thin-walled can be solved, baroque large-scale injection molding surface flow marks, tiger fur line and weld bond problem, effective macroscopic irregularity improving this based article, good chromatic metallic gloss and pearl effect can be realized simultaneously.
In order to reach object of the present invention, solve above technical problem, the technical scheme that the present invention takes is:
The chromatic metallic pearl effect of high flowing, high gloss, free of surface defects exempts from a spray coating polypropylene automotive material, and it is made up of the component of following weight percent:
Polypropylene: 40.8 ~ 74.4%
Toughner: 2 ~ 4%
Mineral master batch: 5 ~ 20%
[compatilizer: 5 ~ 10%
Oxidation inhibitor: 0.4 ~ 0.6%
Photostabilizer: 0.4 ~ 0.6%
Lubricant: 0.8 ~ 2%
Surface-modifying agent: 6 ~ 10%
Chromatic metallic pigment master batch: 3 ~ 6%
Pearly-lustre Masterbatch: 3 ~ 6%
Wherein said polypropylene is the polypropylene of high melt flow rate (MFR), and melt flow rate (MFR) is 60 ~ 150g/10min.
Described toughner is one or more combinations in ethylene-octene copolymer, ethylene-propylene copolymer.
Described mineral master batch is one or more combinations had in carrier talc or calcium carbonate.Wherein, mineral master batch carrier is powdery homo-polypropylene resin, and the content of talcum powder or calcium carbonate is 80%, and its surface is through the coated process of titanate coupling agent, and talcum powder particle diameter is 6000 ~ 10000 orders, and calcium carbonate particle diameter is 6000 ~ 10000 orders.
Described compatilizer is a kind of graftomer, and wherein grafted monomer is maleic anhydride, and graftomer matrix is one or more combinations in polypropylene, polyethylene, percentage of grafting >0.8.
Described oxidation inhibitor is one or more combinations in Hinered phenols, phosphorous acid esters, is specially one or more combinations in 1010,168.
Described photostabilizer is hindered amine light stabilizer, is specially one or more combinations in 944,770.
Described lubricant is one or more combinations in polyethylene wax, calcium stearate, ethylene bis stearic acid amide.
Described chromatic metallic pigment master batch is one or more combinations in supported metal silver powder, zinc powder, wherein, chromatic metallic pigment master batch carrier is powdery homo-polypropylene resin, the content of metal powder is 50%, its surface is through the coated process of special chemical material, metal powder shape is sheet, silver dollar shape, and particle diameter is 1 ~ 100 ц m.
Described pearly-lustre Masterbatch is the mica coating pearly pigment, the silica-coating pearly pigment that have carrier.Wherein pearly-lustre Masterbatch carrier is powdery homo-polypropylene, and the content of pearly pigment is 50%, its surface through the coated process of metal oxide, its particle diameter 50 ц m ~ 100 ц m.
The chromatic metallic pearl effect of a kind of high flowing, high gloss, free of surface defects exempts from spray coating polypropylene automotive material and preparation method thereof, and concrete preparation method comprises the steps:
(1) each raw material is taken by formula rate, by the polypropylene that weighs up and toughner, mineral master batch, compatilizer, surface-modifying agent, chromatic metallic pigment master batch, pearly-lustre Masterbatch by high mixer pre-mixing 6-8 minute, and then add the lubricant, oxidation inhibitor, the photostabilizer that weigh up and be mixed together 6-8 minute, discharging obtains Preblend.All mixing process is all carried out in high mixer, and rotating speed is 1600 ~ 1800 revs/min;
(2) Preblend prepared by step (1) is melt extruded granulation through twin screw extruder, the rotating speed of twin screw extruder is 300 ~ 450 revs/min, and temperature is 180 ~ 220 DEG C.
The chromatic metallic pearl effect of above-mentioned high flowing, high gloss, free of surface defects is exempted from spray coating polypropylene automotive material and be can be used for inner and outer decorative parts of automobile, as backplate, decorative sheet, lower shirt rim, flow deflector etc. under panel, column plaque, collision bumper.
Compared with prior art, advantage of the present invention is:
1, the chromatic metallic pearl effect of high flowing of the present invention, high gloss, free of surface defects is exempted from spray coating polypropylene automotive material and is adopted high melt flow rate polypropylene resin, can make to realize between each component homogenous plasticized, thus raising product surface glossiness.
2, the chromatic metallic pearl effect of high flowing of the present invention, high gloss, free of surface defects is exempted from spray coating polypropylene automotive material and is adopted compatilizer, the mineral master batch in formula system and polypropylene can be made to realize compatible, thus the appearance surfaces defects such as large product surface flow liner, weld bond, tiger fur line can be eliminated.
3, the chromatic metallic pearl effect of high flowing of the present invention, high gloss, free of surface defects is exempted from spray coating polypropylene automotive material and is adopted surface-modifying agent, chromatic metallic pigment master batch, pearly-lustre Masterbatch and polypropylene in formula system can be made to realize compatible, thus the appearance surfaces defects such as large product surface flow liner, weld bond, tiger fur line can be eliminated.
4, the chromatic metallic pearl effect of high flowing of the present invention, high gloss, free of surface defects is exempted from spray coating polypropylene automotive material and is adopted mineral master batch, mineral and acrylic resin, chromatic metallic pigment master batch, the realization of pearly-lustre Masterbatch can be enable to maximize dispersed, thus the appearance surfaces defects such as large product surface flow liner, weld bond, tiger fur line can be eliminated further.
5, the chromatic metallic pearl effect of high flowing of the present invention, high gloss, free of surface defects is exempted from spray coating polypropylene automotive material and is all adopted chromatic metallic pigment master batch and pearly-lustre Masterbatch, chromatic metallic pigment and the same mineral of pearly pigment can be made, polypropylene realizes maximum dispersed, thus the appearance surfaces defects such as final elimination large product surperficial flow liner, weld bond, tiger fur line, make to exempt from spraying product outward appearance and be infinitely close to effect of spraying paint.
The chromatic metallic pearl effect of 6, height of the present invention flowing, high gloss, free of surface defects is exempted from spray coating polypropylene automotive material and can is directly with look to be injection molded into product, product is made to have good gloss degree, pearl effect and metal-like, its surface appearance effects is suitable with effect of spraying paint, simultaneously simple, the low cost of this material producing process, environment friendly and pollution-free.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in detail.
Embodiment 1
The chromatic metallic pearl effect of the height flowing of the present embodiment, high gloss, free of surface defects is exempted from spray coating polypropylene automotive material and is made up of by weight percentage following material:
Polypropylene is high melt flow rate polypropylene, and polyacrylic melt flow rate (MFR) is 60g/10min, 71.8%;
Toughner is ethylene-octene copolymer, 3%;
Mineral master batch is talcum powder master batch, 5%;
Compatilizer is maleic anhydride inoculated polypropylene, 5%;
Oxidation inhibitor is 1010,0.2%, 168,0.2%;
Photostabilizer is 944,0.6%;
Lubricant is polyethylene wax, 1.2%;
Surface-modifying agent, 6%;
Chromatic metallic pigment master batch is colored zinc powder pigment master batch, 3%;
Pearly-lustre Masterbatch is mica coating pearly pigment master batch, 4%.
Concrete preparation method comprises the steps:
(1) each raw material is taken by formula rate, by the polypropylene that weighs up and toughner, mineral master batch, compatilizer, surface-modifying agent, chromatic metallic pigment master batch, pearly-lustre Masterbatch by high mixer pre-mixing 6-8 minute, and then add load weighted lubricant, oxidation inhibitor, photostabilizer be mixed together 6-8 minute, discharging obtains Preblend.All mixing process is all carried out in high mixer, and rotating speed is 1600 ~ 1800 revs/min;
(2) Preblend prepared by step (1) is melt extruded granulation through twin screw extruder, the rotating speed of twin screw extruder is 300 ~ 450, and rev/min temperature is 180 ~ 220 DEG C.
Embodiment 2
The chromatic metallic pearl effect of the height flowing of the present embodiment, high gloss, free of surface defects is exempted from spray coating polypropylene automotive material and is made up of by weight percentage following material:
Polypropylene is high melt flow rate polypropylene, and polypropylene melt flow rate is 70g/10min, 63.9%;
Toughner is ethylene-octene copolymer, 4%;
Mineral master batch is calcium carbonate master batch, 10%;
Compatilizer is maleic anhydride grafted polyethylene, 6%;
Oxidation inhibitor is 1010,0.3%, 168,0.2%;
Photostabilizer is 944,0.2%, 770,0.4%;
Lubricant is polyethylene wax, 0.4%, and calcium stearate, 0.6%;
Surface-modifying agent, 7%;
Chromatic metallic pigment master batch is commercially available silver powder pigment master batch, 4%;
Pearly-lustre Masterbatch is silica-coating pearly pigment master batch, 3%;
Concrete preparation method is with embodiments of the invention 1.
Embodiment 3
The chromatic metallic pearl effect of the height flowing of the present embodiment, high gloss, free of surface defects is exempted from spray coating polypropylene automotive material and is made up of by weight percentage following material:
Polypropylene is high melt flow rate polypropylene, and polypropylene melt flow rate is 120g/10min, 55.7%;
Toughner is ethylene-propylene copolymer, 2%;
Mineral master batch is talcum powder master batch, 15%;
Compatilizer is maleic anhydride inoculated polypropylene, 8%;
Oxidation inhibitor is 1010,0.2%, 168,0.3%;
Photostabilizer is 944,0.4%, 770,0.2%;
Lubricant is polyethylene wax, 0.4%, and calcium stearate, 0.4%, ethylene bis stearic acid amide, 0.4%;
Surface-modifying agent, 8%;
Chromatic metallic pigment master batch is colored zinc powder pigment master batch, 4%;
Pearly-lustre Masterbatch is mica coating pearly pigment master batch, 5%;
Concrete preparation method is with embodiments of the invention 1.
Embodiment 4
The chromatic metallic pearl effect of the height flowing of the present embodiment, high gloss, free of surface defects is exempted from spray coating polypropylene automotive material and is made up of by weight percentage following material:
Polypropylene is high melt flow rate polypropylene, and polypropylene melt flow rate is 130g/10min, 45.4%;
Toughner is ethylene-propylene copolymer, 3%;
Mineral master batch is calcium carbonate master batch, 20%;
Compatilizer is maleic anhydride grafted polyethylene, 9%;
Oxidation inhibitor is 1010,0.3%, 168,0.3%;
Photostabilizer is 944,0.2%, 770,0.2%;
Lubricant is polyethylene wax, 0.8%, and calcium stearate, 0.4%, ethylene bis stearic acid amide, 0.4%;
Surface-modifying agent, 9%;
Chromatic metallic pigment master batch is zinc powder pigment master batch, 5%;
Pearly-lustre Masterbatch is silica-coating pearly pigment master batch, 6%;
Concrete preparation method is with embodiments of the invention 1.
Embodiment 5
The chromatic metallic pearl effect of the height flowing of the present embodiment, high gloss, free of surface defects is exempted from spray coating polypropylene automotive material and is made up of by weight percentage following material:
Polypropylene is high melt flow rate polypropylene, and polypropylene melt flow rate is 150g/10min, 55.8%;
Toughner is ethylene-propylene copolymer, 4%;
Mineral master batch is talcum powder master batch, 5%;
Compatilizer is maleic anhydride inoculated polypropylene, 10%;
Oxidation inhibitor is 1010,0.3%, 168,0.3%;
Photostabilizer is 944,0.3%, 770,0.3%;
Lubricant is polyethylene wax, 0.8%, and calcium stearate, 0.8%, ethylene bis stearic acid amide, 0.4%;
Surface-modifying agent, 10%;
Chromatic metallic pigment master batch is colored silver powder pigment master batch, 6%;
Pearly-lustre Masterbatch is mica coating pearly pigment master batch, 6%;
Concrete preparation method is with embodiments of the invention 1.
Embodiment 6
The chromatic metallic pearl effect of the height flowing of the present embodiment, high gloss, free of surface defects is exempted from spray coating polypropylene automotive material and is made up of by weight percentage following material:
Polypropylene is high melt flow rate polypropylene, and polypropylene melt flow rate is 90g/10min, 60.9%;
Toughner is ethylene-octene copolymer, 3%;
Mineral master batch is calcium carbonate master batch, 10%;
Compatilizer is maleic anhydride grafted polyethylene, 7%;
Oxidation inhibitor is 1010,0.4%, 168,0.2%;
Photostabilizer is 770,0.5%;
Lubricant is polyethylene wax, 0.5%, and calcium stearate, 0.5%;
Surface-modifying agent, 7%;
Chromatic metallic pigment master batch is colored zinc powder pigment master batch, 5%;
Pearly-lustre Masterbatch is silica-coating pearly pigment master batch, 5%;
Concrete preparation method is with embodiments of the invention 1.
Embodiment 7
The chromatic metallic pearl effect of the height flowing of the present embodiment, high gloss, free of surface defects is exempted from spray coating polypropylene automotive material and is made up of by weight percentage following material:
Polypropylene is high melt flow rate polypropylene, and polypropylene melt flow rate is 100g/10min, 56.9%;
Toughner is ethylene-octene copolymer, 2%;
Mineral master batch is talcum powder master batch, 15%;
Compatilizer is maleic anhydride inoculated polypropylene, 8%;
Oxidation inhibitor is 1010,0.2%, 168,0.4%;
Photostabilizer is 944,0.5%;
Lubricant is calcium stearate, 0.5%, and ethylene bis stearic acid amide, 1.5%;
Surface-modifying agent, 8%;
Chromatic metallic pigment master batch is colored silver powder pigment master batch, 3%;
Pearly-lustre Masterbatch is mica coating pearly pigment master batch, 4%;
Concrete preparation method is with embodiments of the invention 1.
Embodiment 8
The chromatic metallic pearl effect of the height flowing of the present embodiment, high gloss, free of surface defects is exempted from spray coating polypropylene automotive material and is made up of by weight percentage following material:
Polypropylene is high melt flow rate polypropylene, and polypropylene melt flow rate is 80g/10min, 50%;
Toughner is ethylene-octene copolymer, 3%;
Mineral master batch is calcium carbonate master batch, 20%;
Compatilizer is maleic anhydride grafted polyethylene, 9%;
Oxidation inhibitor is 1010,0.3%, 168,0.3%;
Photostabilizer is 770,0.4%;
Lubricant is ethylene bis stearic acid amide, 1%;
Surface-modifying agent, 9%;
Chromatic metallic pigment master batch is colored zinc powder pigment master batch, 3%;
Pearly-lustre Masterbatch is silica-coating pearly pigment master batch, 4%;
Concrete preparation method is with embodiments of the invention 1.
Embodiment 9
The chromatic metallic pearl effect of the height flowing of the present embodiment, high gloss, free of surface defects is exempted from spray coating polypropylene automotive material and is made up of by weight percentage following material:
Polypropylene is high melt flow rate polypropylene, and polypropylene melt flow rate is 110g/10min, 55%;
Toughner is ethylene-octene copolymer, 4%;
Mineral master batch is talcum powder master batch, 10%;
Compatilizer is maleic anhydride inoculated polypropylene, 10%;
Oxidation inhibitor is 1010,0.4%, 168,0.2%;
Photostabilizer is 944,0.4%;
Lubricant is polyethylene wax, 2%;
Surface-modifying agent, 10%;
Chromatic metallic pigment master batch is colored silver powder pigment master batch, 4%;
Pearly-lustre Masterbatch is mica coating pearly pigment master batch, 4%;
Concrete preparation method is with embodiments of the invention 1.
The effect assessment of embodiment 1-9 evaluates the appearance of injection moulding model, surface gloss, metal-like and pearl effect, and concrete opinion rating refers to table 1.
Table 1
In embodiment 1-9, specimen surface outward appearance, surface gloss, metal-like and pearl effect evaluation method are as follows:
Appearance, surface gloss, metal-like and pearl effect level evaluation are carried out to injection moulding model.Wherein appearance divides Three Estate: good, general, poor; Surface gloss divides Three Estate: high, medium and low; Metal-like divides Three Estate: strong, in, weak; A pearly-lustre effect divides Three Estate: strong, in, weak.With the attribute ratings that a certain evaluation grade person in the majority is this model performance.
As can be seen from Table 1, embodiment 1-9 all shows good appearance, higher surface gloss, stronger metal-like and pearl effect, all can realize patent of the present invention exempts from spray coating polypropylene automotive material preparation about the chromatic metallic pearl effect of height flowing, high gloss, free of surface defects completely.Especially, embodiment 3-5 and embodiment 9 show the most excellent effect in appearance, surface gloss, metal-like and pearl effect all simultaneously.
Be below the comparative example that applicant does, be intended to the preferred effect that technical solution of the present invention is described.
Comparative example 1
The polypropylene automotive material of comparative example 1 adopts following material and proportioning:
Polypropylene is low melt flow rate polypropylene, and polypropylene melt flow rate is 11g/10min, 55.8%;
Toughner is ethylene-propylene copolymer, 4%;
Mineral master batch is talcum powder master batch, 5%;
Compatilizer is maleic anhydride inoculated polypropylene, 10%;
Oxidation inhibitor is 1010,0.3%, 168,0.3%;
Photostabilizer is 944,0.3%, 770,0.3%;
Lubricant is polyethylene wax, 0.8%, and calcium stearate, 0.8%, ethylene bis stearic acid amide, 0.4%;
Surface-modifying agent, 10%;
Chromatic metallic pigment master batch is colored silver powder pigment master batch, 6%;
Pearly-lustre Masterbatch is mica coating pearly pigment master batch, 6%;
Concrete preparation method is with embodiments of the invention 1.
The component proportion of this comparative example is identical with the component proportion of embodiments of the invention 5, but the polypropylene melt flow rate in the embodiment of the present invention 5 is 150g/10min, belongs to high melt flow rate polypropylene; Polypropylene melt flow rate in comparative example 1 is 11g/10min, belongs to low melt flow rate polypropylene, cannot make to realize between each component homogenous plasticized, thus cannot improve product surface glossiness and improve product appearance.
Comparative example 2
The polypropylene automotive material of comparative example 2 adopts following material and proportioning:
Polypropylene is low melt flow rate polypropylene, and polypropylene melt flow rate is 30g/10min, 55.8%;
Toughner is ethylene-propylene copolymer, 4%;
Mineral master batch is talcum powder master batch, 5%;
Compatilizer is maleic anhydride inoculated polypropylene, 10%;
Oxidation inhibitor is 1010,0.3%, 168,0.3%;
Photostabilizer is 944,0.3%, 770,0.3%;
Lubricant is polyethylene wax, 0.8%, and calcium stearate, 0.8%, ethylene bis stearic acid amide, 0.4%;
Surface-modifying agent, 10%;
Chromatic metallic pigment master batch is colored silver powder pigment master batch, 6%;
Pearly-lustre Masterbatch is mica coating pearly pigment master batch, 6%;
Concrete preparation method is with embodiments of the invention 1.
The component proportion of this comparative example is identical with the component proportion of embodiments of the invention 5, but the polypropylene melt flow rate in embodiment 5 is 150g/10min, belongs to high melt flow rate polypropylene; Polypropylene melt flow rate in comparative example 2 is 30g/10min, belongs to low melt flow rate polypropylene, cannot make to realize between each component homogenous plasticized, thus cannot improve product surface glossiness and improve product appearance.
Comparative example 3
The polypropylene automotive material of comparative example adopts following material and proportioning:
Polypropylene is high melt flow rate polypropylene, and polypropylene melt flow rate is 150g/10min, 65.8%;
Toughner is ethylene-propylene copolymer, 4%;
Mineral master batch is talcum powder master batch, 5%;
Compatilizer is maleic anhydride inoculated polypropylene, 10%;
Oxidation inhibitor is 1010,0.3%, 168,0.3%;
Photostabilizer is 944,0.3%, 770,0.3%;
Lubricant is polyethylene wax, 0.8%, and calcium stearate, 0.8%, ethylene bis stearic acid amide, 0.4%;
Chromatic metallic pigment master batch is colored silver powder pigment master batch, 6%;
Pearly-lustre Masterbatch is mica coating pearly pigment master batch, 6%;
Concrete preparation method comprises the steps:
(1) each raw material is taken by formula rate, by the polypropylene that weighs up and toughner, mineral master batch, compatilizer, chromatic metallic pigment master batch, pearly-lustre Masterbatch by high mixer pre-mixing 6-8 minute, and then add load weighted lubricant, oxidation inhibitor, photostabilizer be mixed together 6-8 minute, discharging obtains Preblend.All mixing process is all carried out in high mixer, and rotating speed is 1600 ~ 1800 revs/min;
(2) Preblend prepared by step (1) is melt extruded granulation through twin screw extruder, the rotating speed of twin screw extruder is 300 ~ 450, and rev/min temperature is 180 ~ 220 DEG C.
Compare with the embodiment of the present invention 5, containing surface-modifying agent in embodiment 5, its surface-modifying agent is 10%; Without surface-modifying agent in comparative example 3, chromatic metallic pigment master batch, pearly-lustre Masterbatch and polypropylene in formula system cannot be made to realize compatible, thus cannot product appearance be improved.
Comparative example 4
The polypropylene automotive material of comparative example 4 adopts following material and proportioning:
Polypropylene is high melt flow rate polypropylene, and polypropylene melt flow rate is 150g/10min, 65.8%;
Toughner is ethylene-propylene copolymer, 4%;
Mineral master batch is talcum powder master batch, 5%;
Oxidation inhibitor is 1010,0.3%, 168,0.3%;
Photostabilizer is 944,0.3%, 770,0.3%;
Lubricant is polyethylene wax, 0.8%, and calcium stearate, 0.8%, ethylene bis stearic acid amide, 0.4%;
Surface-modifying agent, 10%;
Chromatic metallic pigment master batch is colored silver powder pigment master batch, 6%;
Pearly-lustre Masterbatch is mica coating pearly pigment master batch, 6%;
Concrete preparation method comprises the steps:
(1) each raw material is taken by formula rate, by the polypropylene that weighs up and toughner, mineral master batch, surface-modifying agent, chromatic metallic pigment master batch, pearly-lustre Masterbatch by high mixer pre-mixing 6-8 minute, and then add load weighted lubricant, oxidation inhibitor, photostabilizer be mixed together 6-8 minute, discharging obtains Preblend.All mixing process is all carried out in high mixer, and rotating speed is 1600 ~ 1800 revs/min;
(2) Preblend prepared by step (1) is melt extruded granulation through twin screw extruder, the rotating speed of twin screw extruder is 300 ~ 450, and rev/min temperature is 180 ~ 220 DEG C.
Compare with embodiments of the invention 5, containing compatilizer in embodiment 5, its compatilizer is 10%; Without compatilizer in comparative example 4, the mineral master batch in formula system and polypropylene cannot be made to realize compatible, thus cannot product appearance be improved.
Comparative example 5
The polypropylene automotive material of comparative example adopts following material and proportioning:
Polypropylene is high melt flow rate polypropylene, and polypropylene melt flow rate is 150g/10min, 55.8%;
Toughner is ethylene-propylene copolymer, 4%;
Mineral are talcum powder master batch, 5%;
Compatilizer is maleic anhydride inoculated polypropylene, 10%;
Oxidation inhibitor is 1010,0.3%, 168,0.3%;
Photostabilizer is 944,0.3%, 770,0.3%;
Lubricant is polyethylene wax, 0.8%, and calcium stearate, 0.8%, ethylene bis stearic acid amide, 0.4%;
Surface-modifying agent, 10%;
Chromatic metallic pigment master batch is colored silver powder pigment master batch, 6%;
Pearly-lustre Masterbatch is mica coating pearly pigment master batch, 6%;
Concrete preparation method comprises the steps:
(1) each raw material is taken by formula rate, by the polypropylene that weighs up and toughner, compatilizer, surface-modifying agent, chromatic metallic pigment master batch, pearly-lustre Masterbatch by high mixer pre-mixing 6-8 minute, and then add mineral mixing 2-3 minute, last add load weighted lubricant again, oxidation inhibitor, photostabilizer be mixed together 6-8 minute, discharging obtains Preblend.All mixing process is all carried out in high mixer, and rotating speed is 1600 ~ 1800 revs/min;
(2) Preblend prepared by step (1) is melt extruded granulation through twin screw extruder, the rotating speed of twin screw extruder is 300 ~ 450, and rev/min temperature is 180 ~ 220 DEG C.
Compare with embodiments of the invention 5, the mineral master batch in embodiment 5 for there being carrier talc, wherein, mineral master batch carrier is powdery homo-polypropylene resin, talcous content is 80%, and its surface is through the coated process of titanate coupling agent, and talcum powder particle diameter is 6000 ~ 10000 orders; Mineral in comparative example 1 are talcum powder, carrier free, and its surface, also without the coated process of titanate coupling agent, cannot make mineral and acrylic resin, chromatic metallic pigment master batch, the realization of pearly-lustre Masterbatch maximize dispersed, thus cannot improve product appearance.
Comparative example 6
The polypropylene automotive material of comparative example adopts following material and proportioning:
Polypropylene is high melt flow rate polypropylene, and polypropylene melt flow rate is 150g/10min, 55.8%;
Toughner is ethylene-propylene copolymer, 4%;
Mineral master batch is talcum powder master batch, 5%;
Compatilizer is maleic anhydride inoculated polypropylene, 10%;
Oxidation inhibitor is 1010,0.3%, 168,0.3%;
Photostabilizer is 944,0.3%, 770,0.3%;
Lubricant is polyethylene wax, 0.8%, and calcium stearate, 0.8%, ethylene bis stearic acid amide, 0.4%;
Surface-modifying agent, 10%;
Chromatic metallic pigment is colored silver powder pigment, 6%;
Pearly pigment is common pearly pigment, 6%;
Concrete preparation method comprises the steps:
(1) each raw material is taken by formula rate, by the polypropylene that weighs up and toughner, mineral master batch, compatilizer, surface-modifying agent by high mixer pre-mixing 6-8 minute, and then add chromatic metallic pigment, pearly pigment mixing 2-3 minute, last add load weighted lubricant again, oxidation inhibitor, photostabilizer be mixed together 6-8 minute, discharging obtains Preblend.All mixing process is all carried out in high mixer, and rotating speed is 1600 ~ 1800 revs/min;
(2) Preblend prepared by step (1) is melt extruded granulation through twin screw extruder, the rotating speed of twin screw extruder is 300 ~ 450, and rev/min temperature is 180 ~ 220 DEG C.
Compare with embodiments of the invention 5, chromatic metallic pigment master batch in embodiment 5 is supported metal silver powder, wherein, chromatic metallic pigment master batch carrier is powdery homo-polypropylene resin, the content of metal powder is 60%, its surface is through the coated process of special chemical material, and metal powder shape is sheet, silver dollar shape, and particle diameter is 1 ~ 100 ц m; Pearly pigment master batch is the mica coating pearly pigment having carrier.Wherein pearly pigment master batch carrier is powdery homo-polypropylene, and the content of pearly pigment is 60%, its surface through the coated process of metal oxide, its particle diameter 50 ц m ~ 100 ц m; Chromatic metallic pigment in comparative example 6 is colored silver powder pigment, carrier free, its surface is also without the coated process of special chemical material, pearly pigment is common pearly pigment, carrier free, its surface, also without the coated process of metal oxide, cannot make chromatic metallic pigment and the same mineral of pearly pigment, polypropylene realizes maximum dispersed, thus cannot improve product appearance.
Comparative example 1-6 is using embodiment 5 as sample for reference, and its effect assessment evaluates the appearance of injection moulding model, surface gloss, metal-like and pearl effect, and concrete opinion rating refers to table 2.
Table 2
Appearance, surface gloss, metal-like and pearl effect level evaluation are carried out to injection moulding model.Wherein appearance divides Three Estate: good, general, poor; Surface gloss divides Three Estate: high, medium and low; Metal-like divides Three Estate: strong, in, weak; Pearl effect divides Three Estate: strong, in, weak.With the attribute ratings that a certain evaluation grade person in the majority is this model performance.
As can be seen from Table 2, compare with embodiments of the invention 5, comparative example 1-2 injection moulding specimen surface glossiness is low, and its reason adopts low melt flow rate polypropylene; Comparative example 3 injection moulding specimen surface appearance poor, its reason does not adopt surface-modifying agent; Comparative example 4 injection moulding specimen surface appearance poor, its reason does not adopt compatilizer; Comparative example 5 injection moulding specimen surface appearance poor, its reason is the mineral talc powder in formula is carrier free, and its surface is also without the coated process of titanate coupling agent; Comparative example 6 injection moulding specimen surface appearance poor, metal-like is weak, pearl effect is weak, its reason is the chromatic metallic pigment in formula is colored silver powder pigment, carrier free, its surface is also without the coated process of special chemical material, pearly pigment is common pearly pigment, carrier free, its surface is also without the coated process of metal oxide.
By table 1, table 2 can be found out, patent of the present invention adopts high melt flow rate polypropylene resin especially, mineral master batch, compatilizer, surface-modifying agent, chromatic metallic pigment master batch, the polypropylene material prepared by component such as pearly-lustre Masterbatch has high appearance, high gloss, high metallic texture and significantly pearl effect, can look be directly with to be injection molded into thin-walled, baroque large-scale product, product is made to have good appearance, glossiness, pearl effect and metal-like, its surface appearance effects is suitable with effect of spraying paint, this material producing process is simple simultaneously, low cost, environment friendly and pollution-free, inner and outer decorative parts of automobile can be widely used in, as panel, column plaque, backplate under collision bumper, decorative sheet, lower shirt rim, flow deflector etc.
Above embodiment is the present invention's preferably embodiment; but scope of the present invention is not by the restriction of described specific embodiments; the improvement done under other any does not deviate from spirit of the present invention and principle and supplementing; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (10)
1. the chromatic metallic pearl effect of high flowing, high gloss, free of surface defects exempts from a spray coating polypropylene automotive material, it is characterized in that, it is made up of the component of following weight percent:
Polypropylene: 40.8 ~ 74.4%
Toughner: 2 ~ 4%
Mineral master batch: 5 ~ 20%
Compatilizer: 5 ~ 10%
Oxidation inhibitor: 0.4 ~ 0.6%
Photostabilizer: 0.4 ~ 0.6%
Lubricant: 0.8 ~ 2%
Surface-modifying agent: 6 ~ 10%
Chromatic metallic pigment master batch: 3 ~ 6%
Pearly-lustre Masterbatch: 3 ~ 6%;
Wherein, described polypropylene is the polypropylene of high melt flow rate (MFR), and melt flow rate (MFR) is 60 ~ 150g/10min.
2. the chromatic metallic pearl effect of high flowing according to claim 1, high gloss, free of surface defects exempts from spray coating polypropylene automotive material, it is characterized in that, described toughner is one or more combinations in ethylene-octene copolymer, ethylene-propylene copolymer.
3. the chromatic metallic pearl effect of high flowing according to claim 1, high gloss, free of surface defects exempts from spray coating polypropylene automotive material, it is characterized in that, described mineral master batch is one or more combinations had in the talcum powder of carrier or calcium carbonate, wherein, the carrier of mineral master batch is powdery homo-polypropylene resin, wherein the content of talcum powder or calcium carbonate is 80%, its surface is through the coated process of titanate coupling agent, talcum powder particle diameter is 6000 ~ 10000 orders, and calcium carbonate particle diameter is 6000 ~ 10000 orders.
4. the chromatic metallic pearl effect of high flowing according to claim 1, high gloss, free of surface defects exempts from spray coating polypropylene automotive material, it is characterized in that, described compatilizer is graftomer, its grafted monomer is maleic anhydride, graftomer matrix is one or more combinations in polypropylene, polyethylene, percentage of grafting >0.8.
5. the chromatic metallic pearl effect of high flowing according to claim 1, high gloss, free of surface defects exempts from spray coating polypropylene automotive material, it is characterized in that, described oxidation inhibitor is one or more combinations of Hinered phenols, phosphite ester kind antioxidant.
6. the chromatic metallic pearl effect of high flowing according to claim 1, high gloss, free of surface defects exempts from spray coating polypropylene automotive material, and it is characterized in that, described photostabilizer is hindered amine light stabilizer.
7. the chromatic metallic pearl effect of high flowing according to claim 1, high gloss, free of surface defects exempts from spray coating polypropylene automotive material, it is characterized in that, described lubricant is one or more combinations in polyethylene wax, calcium stearate, ethylene bis stearic acid amide.
8. the chromatic metallic pearl effect of high flowing according to claim 1, high gloss, free of surface defects exempts from spray coating polypropylene automotive material, it is characterized in that, described chromatic metallic pigment master batch is one or more combinations had in the silver powder of carrier, zinc powder, wherein, chromatic metallic pigment master batch carrier is powdery homo-polypropylene resin, wherein the content of metal powder is 50%, its surface is through the coated process of special chemical material, metal powder shape is sheet, silver dollar shape, and particle diameter is 1 ~ 100 ц m.
9. the chromatic metallic pearl effect of high flowing according to claim 1, high gloss, free of surface defects exempts from spray coating polypropylene automotive material, it is characterized in that, described pearly-lustre Masterbatch is the mica coating pearly pigment, the silica-coating pearly pigment that have carrier, wherein pearly-lustre Masterbatch carrier is powdery homo-polypropylene, the content of pearly pigment is 50%, its surface through the coated process of metal oxide, its particle diameter 50 ц m ~ 100 ц m.
10. the chromatic metallic pearl effect of high flowing as claimed in claim 1, high gloss, free of surface defects exempts from a preparation method for spray coating polypropylene automotive material, it is characterized in that comprising the following steps:
(1) each raw material is taken by formula rate, by the polypropylene that weighs up and toughner, mineral master batch, compatilizer, surface-modifying agent, chromatic metallic pigment master batch, pearly-lustre Masterbatch by high mixer pre-mixing 6-8 minute, and then add the lubricant, oxidation inhibitor, the photostabilizer that weigh up and be mixed together 6-8 minute, discharging obtains Preblend, all mixing process is all carried out in high mixer, and rotating speed is 1600 ~ 1800 revs/min;
(2) Preblend prepared by step (1) is melt extruded granulation through twin screw extruder, the rotating speed of twin screw extruder is 300 ~ 450 revs/min, and temperature is 180 ~ 220 DEG C.
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Application publication date: 20150610 |