CN103289195A - Composite polypropylene antiaging agent for car radiator cover and preparation method of composite polypropylene antiaging agent - Google Patents
Composite polypropylene antiaging agent for car radiator cover and preparation method of composite polypropylene antiaging agent Download PDFInfo
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- CN103289195A CN103289195A CN2013101982826A CN201310198282A CN103289195A CN 103289195 A CN103289195 A CN 103289195A CN 2013101982826 A CN2013101982826 A CN 2013101982826A CN 201310198282 A CN201310198282 A CN 201310198282A CN 103289195 A CN103289195 A CN 103289195A
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Abstract
The invention relates to a composite polypropylene antiaging technology for a car radiator cover, in particular relates to a composite polypropylene antiaging agent for a car radiator cover and a preparation method of the composite polypropylene antiaging agent, and mainly solves the technical problems that a polymer material existing in prior art is poor in weather resistance, easily changes to yellow, losses gloss, and is poor in toughness, low in impact strength and short in service life. The preparation method comprises the following steps of: adding 40-55% by mass of antioxidizer 1010, 15-20% by mass of antioxidizer 1024, 10-20% by mass of ultraviolet light absorber UV-326, 10-15% by mass of light stabilizer 770, 10-25% by mass of dilauryl thiodipropionate and 15-20% by mass of antioxidizer 626 in an ultralow temperature crusher, reducing the temperature of materials until the materials are in embrittlement state by using a liquid nitrogen refrigerant, then carrying out high-speed impact, shearing and rubbing to obtain 800-1000 meshes of micron-sized antiaging agent ultrafine powder with corresponding particle size of 100-12.5um.
Description
Technical field
The present invention relates to the anti-aging technology of a kind of radiator cowling for motor vehicles composite polypropylene, especially relate to a kind of radiator cowling for motor vehicles composite polypropylene antiaging agent and preparation method thereof.
Background technology
Polypropylene is a kind of thermoplastic resin that is made by propylene polymerization, and polypropylene is the polymkeric substance of nontoxic, odorless, the tasteless high crystallization of oyster white, and density is 0. 90--, and " 0. 91g/rm is one of the lightest kind in all plastics at present.
The PP material of copolymer type has lower heat-drawn wire (100 ℃), low transparency, low-luster, low rigidity, good moldability, and the product surface good luster is easy to characteristics such as painted.The vicat softening temperature of PP is 150 ℃.Material degree of crystallinity height has excellent mechanical property, and surperficial rigidity and the anti-scratch characteristic of this material are fine, and polypropylene has excellent counter-bending fatigability simultaneously.Polypropylene has good thermotolerance, and goods can be in the sterilization that carries out disinfection of temperature more than 100 ℃, and under the condition that is not subjected to external force, 150 ℃ also indeformable.Polyacrylic chemical stability is fine, and is outside decapacitation is corroded by the vitriol oil, concentrated nitric acid, all more stable to other various chemical reagent.But temperature and loading rate are very big to polyacrylic toughness influence, and when temperature was higher than second-order transition temperature, impact fracture was ductile rupture, be lower than second-order transition temperature and be brittle rupture, and impact value descends significantly.
Along with expanding economy and development of technology, automobile plastic trend obviously strengthens, polypropylene material is because it has that density is low, excellent performance and be easy to characteristics such as recovery, automobile plastic trend is polypropyleneization, account for about 900,000 tons of 45.6%, 2011 year domestic polypropylene material market consumption of overall auto plastics.But China's polypropylene material is not obtained substantive breakthroughs as yet in five big gordian techniquies such as high tenacity high-modulus high workability, superstrength, damage resistant, humble volatility and the high polarity of polypropylene and difficult point, thereby be absorbed in the predicament under one's control of long-term dependence on import, seriously hindered the steady and sound fast development of Domestic Automotive Industry.
At present commercial polypropylene, rubber master batches, the inorganic fillings of adopting more; a small amount of antioxidant 1010; pass through high-speed mixing earlier; through tablets press, finally by forcing machine, the machine-shaping radiator cowling for motor vehicles; these polymer materialss through above-mentioned processing exist weathering resistance poor; easily yellowing, gloss forfeiture, poor toughness, problem such as shock strength is low, work-ing life is short.
Summary of the invention
The present invention provides a kind of radiator cowling for motor vehicles composite polypropylene antiaging agent and preparation method thereof, it mainly is to solve the existing in prior technology polymer materials to exist weathering resistance poor, easily yellowing, gloss forfeiture, poor toughness, the technical problem that shock strength is low, work-ing life is short etc.
Above-mentioned technical problem of the present invention is mainly solved by following technical proposals:
A kind of radiator cowling for motor vehicles composite polypropylene antiaging agent of the present invention and preparation method thereof, it is characterized in that described method comprises: be the antioxidant 1010 of 40-50% with mass percent, the oxidation inhibitor 1024 of 5-15%, the ultraviolet absorbent uv-326 of 5-15%, the photostabilizer 770 of 5-15%, the Tyox B of 10-15%, the antioxidant 626 of 5-15% joins in the super-low temperature pulverizator, utilize the liquid nitrogen refrigerant to be cooled to the embrittlement state to material, adopt high-speed impact then, shear then, friction, to obtain 800-1000 order, corresponding particle diameter 100-12.5um micron order antiaging agent superfine powder.
Antioxidant 1010, molecular weight 1178 is a kind of efficient, the hindered phenol antioxygen of colourless dirt, toxicity is lower, and anti-extraction ability is strong, and volatility is low, and consistency is good, the thermally-stabilised phenols primary antioxidant of using of tasteless long-acting type.Can help to catch and in and free radical, dispel a class material of radical pair polypropylene product infringement, thereby prevent the base material thermooxidative degradation.As with auxiliary antioxidant (sulfo-, phosphorous acid ester), photostabilizers etc. mix to use, and have good synergy.
Oxidation inhibitor 1024 molecular weight 552 are high molecular weight hindered phenols oxidation inhibitor, also are most widely used macromolecule resin metal ion capturing agents in the world, can prevent plastic ageing, xanthochromia effectively.Can remove simultaneously metal ion (copper) in polymerization, the effect of the performance degradation that the protection plastics cause because of metal ion catalysis mixes use with 1010 and can obtain better antiageing effect.
Antioxidant 626 molecular weight 236.89 are a kind of phosphorous acid esters auxiliary type oxidation inhibitor, general upgraded product as oxidation inhibitor 168, characteristics are anti-xanthochromias, high transparent, be a kind of low volatility organic synthesis antioxygen stopper, utilize its high phosphorous property simultaneously, compare with other equivalent phosphite antioxidant, have more high heat resistance and tint retention effect, net effect is better than traditional antioxidant 168.To most of plastics have good consistency, advantage such as heat-resisting durability is good, addition is little, the convection cell melt fluidity is good.Normal and Polyphenols primary antioxidant, fast light according to stablizer and usefulness, the generation synergistic effect can improve the antioxygen of primary antioxidant greatly.
Tyox B molecular weight 514.95, it can decompose the hydroperoxide (ROOH) in the resin autoxidation chain reaction effectively as a kind of peroxide decomposer, the order that chain-breaking reaction carries out in reaching.
By antioxidant 626, Tyox B and composite with the science of antioxidant 1010, reach collaborative purpose, can decompose the superoxide that produces in the goods course of processing rapidly, have metal ion capture function and anti-extraction ability simultaneously concurrently, thereby improve colour stability and the lasting weathering resistance of goods.
UV-326 molecular weight: 315.5, be more representational a kind of in the benzotriazole UV light absorber, its advantage be stable performance, toxicity low, can absorb ultraviolet ray (especially wavelength is 290-400nm) consumingly, be specially adapted to water white transparency and become colour product.Volatility is low under the high temperature, and the high temperature resistance degradation property is good, as polyacrylic ultra-violet stabilizer, can not form band look complex compound with the metal-salt that resin crosslinks is used.
Photostabilizer 770, molecular weight: 480.73, toxicity is extremely low, volatility is low and transport property is few, possesses hydroperoxide decomposition, quencher excited oxygen, can catch ability such as free radical, is not only photostabilizer efficiently, simultaneously also be oxidation inhibitor efficiently, belong to the agent of long-acting type anti-light aging.Superpower water-fast extracting is more suitable to the radiator cowling for motor vehicles under the normal place wet environment.With various kinds of resin consistency is preferably arranged, with oxidation inhibitor, UV light absorber and usefulness have synergy, and the ultraviolet ray that runs in can the absorbent article use can further improve the thermotolerance of goods, light aging resisting effect.
Science by UV-326,770 photostabilizers is composite, utilizes its synergy, the heat that runs in the absorbent article use, oxygen and ultraviolet caused problem of aging.
As preferably, the described liquid nitrogen that utilizes is cooled to material-30～-40 ℃.
As preferably, the rotating speed of described high-speed impact is 20000-25000r/min.
Therefore, the present invention utilizes the synergy between main anti-oxidant 1010 and 1024, synergy between auxilliary antioxidant 626 and the Tyox B, the mutual synergy of UV-326 UV light absorber and 770 photostabilizers, and above-mentioned main anti-oxidant, auxilliary antioxidant, UV light absorber, photostabilizer comprehensive synergy each other, utilize the metal ion capturing ability of antioxidant 1024 simultaneously, the water-fast extracting of 1010 and 770 photostabilizers can stop the heat of goods effectively, oxygen, photooxidation reaction, thus it is poor to have solved the weathering resistance that polypropylene automotive radiator cover that prior art produces exists preferably, easily yellowing, the gloss forfeiture, poor toughness, shock strength is low, problems such as work-ing life is short.
Embodiment
Below by embodiment, technical scheme of the present invention is described in further detail.
Comparative example: be that 1.0% antioxidant 1010,60% polypropylene, 15% rubber master batches, 20% talcum powder, 4% coupling agent and other auxiliary agents evenly are mixed in high-speed mixer with mass percent, mixture through the parallel dual-screw extruding machine granulation, is injection molded into the standard testing sample through injection moulding machine again.Adopt the proofing box of plastics xenon lamp weather, test materials is carried out artificial climate accelerated deterioration in 28 days; Utilize shock-testing machine that sample is carried out izodtest, the mechanical property Changing Pattern of trial target is respectively organized in contrast.
Embodiment 1: a kind of radiator cowling for motor vehicles composite polypropylene antiaging agent of this example and preparation method thereof, its method steps is: mass percent is 42% antioxidant 1010,17% oxidation inhibitor 1024,10% ultraviolet absorbent uv-326,11% photostabilizer 770,10% Tyox B, 10% antioxidant 626 joins in the super-low temperature pulverizator, utilizing the liquid nitrogen refrigerant to be cooled to-35 ℃ to material makes material be the embrittlement state, adopt high speed 20000-25000r/min bump then, shear then, friction, to obtain 800-1000 order, corresponding particle diameter 100-12.5um micron order antiaging agent superfine powder.
Be that this product composite polypropylene antiaging agent of 1.0%, 60% polypropylene, 15% rubber master batches, 20% talcum powder, 4% coupling agent and other auxiliary agents evenly are mixed in high-speed mixer with mass percent, mixture through the parallel dual-screw extruding machine granulation, is injection molded into the standard testing sample through injection moulding machine again.Adopt the proofing box of plastics xenon lamp weather, test materials is carried out artificial climate accelerated deterioration in 28 days; Utilize shock-testing machine that sample is carried out izodtest, the mechanical property Changing Pattern of trial target is respectively organized in contrast.
Embodiment 2: a kind of radiator cowling for motor vehicles composite polypropylene antiaging agent of this example and preparation method thereof, its method steps is: mass percent is 42% antioxidant 1010,16% oxidation inhibitor 1024,10% ultraviolet absorbent uv-326,12% photostabilizer 770,10% Tyox B, 10% antioxidant 626 joins in the super-low temperature pulverizator, utilizing the liquid nitrogen refrigerant to be cooled to-35 ℃ to material makes material be the embrittlement state, adopt high speed 20000-25000r/min bump then, shear then, friction, to obtain 800-1000 order, corresponding particle diameter 100-12.5um micron order antiaging agent superfine powder.
Be that this product composite polypropylene antiaging agent of 1.0%, 60% polypropylene, 15% rubber master batches, 20% talcum powder, 4% coupling agent and other auxiliary agents evenly are mixed in high-speed mixer with mass percent, mixture through the parallel dual-screw extruding machine granulation, is injection molded into the standard testing sample through injection moulding machine again.Adopt the proofing box of plastics xenon lamp weather, test materials is carried out artificial climate accelerated deterioration in 28 days; Utilize shock-testing machine that sample is carried out izodtest, the mechanical property Changing Pattern of trial target is respectively organized in contrast.
Embodiment 3: a kind of radiator cowling for motor vehicles composite polypropylene antiaging agent of this example and preparation method thereof, its method steps is: mass percent is 42% antioxidant 1010,15% oxidation inhibitor 1024,10% ultraviolet absorbent uv-326,13% photostabilizer 770,10% Tyox B, 10% antioxidant 626 joins in the super-low temperature pulverizator, utilizing the liquid nitrogen refrigerant to be cooled to-35 ℃ to material makes material be the embrittlement state, adopt high speed 20000-25000r/min bump then, shear then, friction, to obtain 800-1000 order, corresponding particle diameter 100-12.5um micron order antiaging agent superfine powder.
Be that this product composite polypropylene antiaging agent of 1.0%, 60% polypropylene, 15% rubber master batches, 20% talcum powder, 4% coupling agent and other auxiliary agents evenly are mixed in high-speed mixer with mass percent, mixture through the parallel dual-screw extruding machine granulation, is injection molded into the standard testing sample through injection moulding machine again.Adopt the proofing box of plastics xenon lamp weather, test materials is carried out artificial climate accelerated deterioration in 28 days; Utilize shock-testing machine that sample is carried out izodtest, the mechanical property Changing Pattern of trial target is respectively organized in contrast.
Embodiment 4: a kind of radiator cowling for motor vehicles composite polypropylene antiaging agent of this example and preparation method thereof, its method steps is: mass percent is 40% antioxidant 1010,15% oxidation inhibitor 1024,10% ultraviolet absorbent uv-326,15% photostabilizer 770,10% Tyox B, 10% antioxidant 626 joins in the super-low temperature pulverizator, utilizing the liquid nitrogen refrigerant to be cooled to-35 ℃ to material makes material be the embrittlement state, adopt high speed 20000-25000r/min bump then, shear then, friction, to obtain 800-1000 order, corresponding particle diameter 100-12.5um micron order antiaging agent superfine powder.
Be that this product composite polypropylene antiaging agent of 1.0%, 60% polypropylene, 15% rubber master batches, 20% talcum powder, 4% coupling agent and other auxiliary agents evenly are mixed in high-speed mixer with mass percent, mixture through the parallel dual-screw extruding machine granulation, is injection molded into the standard testing sample through injection moulding machine again.Adopt the proofing box of plastics xenon lamp weather, test materials is carried out artificial climate accelerated deterioration in 28 days; Utilize shock-testing machine that sample is carried out izodtest, the mechanical property Changing Pattern of trial target is respectively organized in contrast.
The shock test data sheet is as follows
As can be seen from the above table, the polypropylene automotive radiator cover of radiator cowling for motor vehicles composite polypropylene antiaging agent of the present invention modification can effectively suppress polyacrylic catabiosis, and its effect obviously is better than comparative example, after artificial climate accelerated deterioration in 28 days, shock strength still reaches 11.73KJ/M
2, and comparative example has only 7.23KJ/ M
2, radiator cowling for motor vehicles composite polypropylene antiaging agent is fairly obvious to polyacrylic anti-aging modifying function.Therefore, radiator cowling for motor vehicles composite polypropylene antiaging agent of the present invention can effectively be kept the quality of radiator cowling for motor vehicles, prolongs the storage life of radiator cowling for motor vehicles, and business promotion is worth very huge.
The above only is specific embodiments of the invention, but constitutional features of the present invention is not limited thereto, and any those skilled in the art is in the field of the invention, and the variation of doing or modify all is encompassed among the claim of the present invention.
Claims (3)
1. radiator cowling for motor vehicles composite polypropylene antiaging agent and preparation method thereof, it is characterized in that described method comprises: be the antioxidant 1010 of 40-55% with mass percent, the oxidation inhibitor 1024 of 15-20%, the ultraviolet absorbent uv-326 of 10-20%, the photostabilizer 770 of 10-15%, the Tyox B of 10-25%, the antioxidant 626 of 15-20% joins in the super-low temperature pulverizator, utilize the liquid nitrogen refrigerant to be cooled to the embrittlement state to material, adopt high-speed impact then, shear then, friction, to obtain 800-1000 order, corresponding particle diameter 100-12.5um micron order antiaging agent superfine powder.
2. a kind of radiator cowling for motor vehicles composite polypropylene antiaging agent according to claim 1 and preparation method thereof is characterized in that the described liquid nitrogen that utilizes is cooled to material-30～-40 ℃.
3. a kind of radiator cowling for motor vehicles composite polypropylene antiaging agent according to claim 1 and preparation method thereof, the rotating speed that it is characterized in that described high-speed impact is 20000-25000r/min.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017032283A1 (en) * | 2015-08-21 | 2017-03-02 | 天津市顺康科技发展有限公司 | Material for soft foundation curing treatment member, and preparation method and use thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102286171A (en) * | 2011-06-21 | 2011-12-21 | 公安部四川消防研究所 | Blow molding type halogen-free flame-retardant polypropylene material |
| CN102766299A (en) * | 2012-08-01 | 2012-11-07 | 长沙达联塑料有限公司 | Anti-impacting anti-ageing modified polypropylene material and preparation method thereof |
| CN102850655A (en) * | 2012-09-26 | 2013-01-02 | 长城汽车股份有限公司 | Low-density automobile back door plate module and preparation method thereof |
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- 2013-05-24 CN CN2013101982826A patent/CN103289195A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102286171A (en) * | 2011-06-21 | 2011-12-21 | 公安部四川消防研究所 | Blow molding type halogen-free flame-retardant polypropylene material |
| CN102766299A (en) * | 2012-08-01 | 2012-11-07 | 长沙达联塑料有限公司 | Anti-impacting anti-ageing modified polypropylene material and preparation method thereof |
| CN102850655A (en) * | 2012-09-26 | 2013-01-02 | 长城汽车股份有限公司 | Low-density automobile back door plate module and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017032283A1 (en) * | 2015-08-21 | 2017-03-02 | 天津市顺康科技发展有限公司 | Material for soft foundation curing treatment member, and preparation method and use thereof |
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Application publication date: 20130911 |