CN103554688A - High polymer material for automotive trim product - Google Patents
High polymer material for automotive trim product Download PDFInfo
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- CN103554688A CN103554688A CN201310542211.3A CN201310542211A CN103554688A CN 103554688 A CN103554688 A CN 103554688A CN 201310542211 A CN201310542211 A CN 201310542211A CN 103554688 A CN103554688 A CN 103554688A
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- polystyrene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/14—Copolymers of propene
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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
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/003—Additives being defined by their diameter
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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
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/004—Additives being defined by their length
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Abstract
The invention provides a high polymer material for an automotive trim product. The high polymer material is good in intermiscibility, excellent in scratch resistance and low temperature impact resistance, and comprises the following components in parts by weight: 100 parts of modified polypropylene resin, 35-40 parts of ethylene-alpha-olefine copolymer, 20-25 parts of polylactic acid, 25-35 parts of polystyrene-polyisobutene-polystyrene block copolymer, 3-5 parts of magnesium sulfate crystal whisker, 10-15 parts of mica powder, and 1-2 parts of oleamide.
Description
Technical field
The present invention relates to automotive material technical field, a kind of automotive trim goods macromolecular material is particularly provided.
Background technology
At automobile manufacturing field, polypropylene has the advantages such as light, the resistance to solvent of quality, easily processing, excellent mechanical property, easy recovery and is applied widely because of it, particularly, for meeting the requirement to future developments such as energy-saving and environmental protection, safety in automotive industry future, polypropylene material quality is light, processing is simple, feature that easily reclaim is the most applicable.
But along with the development of automotive engineering and improving constantly that indices is required, polypropylene material is also more and more difficult to meet automobile component, the particularly needs of automotive trim product performance because of its inherent defect.First, one side polypropylene material surface hardness relative deficiency, scratch resistant performance is poor, on the other hand, for meeting often needs a large amount of interpolation mineral fillers in polypropylene material of performance requriements, and these fillers often cause stress concentration and cause the problems such as stress whitening, simultaneously automotive upholstery as dashboard, auxiliary fasia console, door-plate, column, glove box, pull the parts such as cover plate and producing, in transportation and the process used, be all difficult to avoid being subject to hard thing and collide with, thereby cause for above-mentioned reasons surperficial scuffing and affect and use and attractive in appearance; The second, automotive upholstery must reach certain low-temperature impact-resistant requirement, particularly 0 ℃ to-30 ℃ low temperature impact properties, otherwise, under harsh climate condition, once bump in vehicle traveling process, may produce hard fragment, critical driving and by bus personnel's safety.Moreover, because polypropylene material is non-polar material, surface can be low, make the consistency of itself and most polymers poor, be difficult for infiltrating, bonding with print, coating property is poor, low with the cohesive strength of coating, and for automotive upholstery as dashboard etc. need to other material binding, also need good adhesive property, just there is being difficult to the contradiction being in harmonious proportion in this.
Therefore, how to develop the high strength rigidity of a kind of maintenance polypropylene material own and stable on heating advantage, improve simultaneously material scratch resistant performance, low-temperature impact-resistant performance and with the performance that mixes of other polymkeric substance, be the key point that determines polypropylene material future development and application always.
Summary of the invention
Object of the present invention is to provide a kind of novel intermiscibility good and have a formula of macromolecular material for the automotive trim goods of excellent scratch resistant performance, low-temperature impact-resistant performance.
Automotive trim goods in the present invention are as follows with the formula of macromolecular material: in weight part, 100 parts of modified polypropylene resins, ethene-alpha-olefin copolymer 35-40 part, poly(lactic acid) 20-25 part, polystyrene-poly iso-butylene-polystyrene block copolymer 25-35 part, magnesium sulfate crystal whisker 3-5 part, mica powder 10-15 part, oleylamide 1-2 part.
Described modified polypropylene resin is through phenolic resin modified ethylene/propene atactic copolymerized polypropene, and wherein, in resin, the content of ethene is 7-10%, and the content of resol is 2-5%.
In described ethene-alpha-olefin copolymer, the content of ethene is 60-70%.
Described poly(lactic acid) is poly (l-lactic acid).
In described polystyrene-poly iso-butylene-polystyrene block copolymer, the content of polystyrene is 50-60%, and the scope of its number-average molecular weight is between 150000-200000.
In described magnesium sulfate crystal whisker, the length of fiber is 10-15 μ m, and mean diameter is 0.5-0.8 μ m.
Described mica powder is that length is 10-15 μ m, and slenderness ratio be greater than 10 sheet structure.
As preferably, ethene-alpha-olefin copolymer is 38 parts;
As preferably, poly(lactic acid) is 23 parts;
As preferably, polystyrene-poly iso-butylene-polystyrene block copolymer is 30 parts;
As preferably, magnesium sulfate crystal whisker and mica powder add up to 15 parts;
As preferably, the umber of oleylamide is at least 1/10 of magnesium sulfate crystal whisker and mica powder total amount;
Advantage of the present invention is, reasonable design the formula of macromolecular material for automotive trim, by the interaction between each component and influence each other and improved polypropylene-based resin material, obtained intermiscibility good and there is the automotive trim goods macromolecular material of excellent scratch resistant performance, low-temperature impact-resistant performance.
Embodiment
Below by specific embodiment, describe content of the present invention in detail.
Embodiment 1.
According to each given component proportion of table 1 prepare burden and dry to 100 ℃ standby;
First by put into the rotating speed with 1500rpm in stirrer according to the modified polypropylene resin of the ready magnesium sulfate crystal whisker of proportioning, mica powder, oleylamide and half amount, carry out pre-mixing 5min;
Subsequently by remaining modified polypropylene resin, and ethene-alpha-olefin copolymer, poly(lactic acid), polystyrene-poly iso-butylene-polystyrene block copolymer put in stirrer, with the rotating speed mixing 10min of 750rpm;
Subsequently the material mixing is put in twin screw extruder, made material under the molten state of 220 ℃, carry out mixing 8min, screw slenderness ratio is 40:1, and screw speed is 500rpm;
After mixing, extrude, cooling, pelletizing, obtain automotive trim goods macromolecular material of the present invention.
By macromolecular material of the present invention hot compacting under 220 ℃, 60MPa condition, it is test sample size.
Embodiment 2-4 and comparative example 1*-6* formula outer (wherein 1* has the formula identical with embodiment 1, but it has adopted the homo-polypropylene of non-modified) as shown in table 1, preparation method is all identical with embodiment 1.
Table 1
1. in table 1, A-G represents modified polypropylene resin, ethene-alpha-olefin copolymer, poly(lactic acid), polystyrene-poly iso-butylene-polystyrene block copolymer, magnesium sulfate crystal whisker, mica powder, oleylamide successively;
2. elongation at break is at draw speed 100mm/min(low speed) and 500mm/min(at a high speed) condition under measure respectively;
3. scratch resistance be take range estimation and is occurred that the scuffing power of obvious stress whitening is standard;
4. intermiscibility be take and after the acrylic resin coating of surface spraying 20 μ m, estimated surface whether defectiveness is standard: zero as without obviously inhomogeneous, * obviously inhomogeneous for having.
Modified polypropylene resin is the basis of formula system of the present invention, its feature such as rigidity, thermotolerance and lightweight of possessing polypropylene material excellence for material system has great importance, particularly the present invention adopts through the ethylene/propene atactic copolymerized polypropene through phenolic resin modified, can improve well scratch resistant performance and the resistance to high-speed impact property of material system.This is because the importing of ethene in polypropylene backbone can effectively suppress polyacrylic crystallization tendency, thereby can improve the flexibility of material system, scratch resistant performance is increased, and ethene also rich certain transparency is attractive in appearance to strengthen, in order to bring into play the effect of ethene, in ethylene/propene atactic copolymerized polypropene, the content of ethene at least should be 7%, but should surpass 10%, otherwise will obviously worsen the fundamental propertys such as the rigidity of system and thermotolerance.And adopt phenolic resin modifiedly, and can greatly improve on the one hand the resistance to high-speed impact property of material system, can also improve on the other hand the intermiscibility of acrylic resin and other resins and mineral filler.For bringing into play above-mentioned effect, in ethylene/propene atactic copolymerized polypropene, the content of resol should be more than 2%, but too much interpolation can affect modified polypropylene resin as basic properties, therefore should control it below 5%.
Ethene-alpha-olefin copolymer has vital role for the low-temperature impact-resistant performance of improving system, in order to meet material system of the present invention for the requirement of low temperature impact properties, the content of ethene-alpha-olefin copolymer at least should be more than 35 parts, but its content can not be too high, otherwise will obviously worsen the rigidity of material system, the requirement in system of the present invention is below 40 parts.Should be between 60-70% in order to meet ethylene content in performance requriements ethene-alpha-olefin copolymer, the ethene-alpha-olefin copolymer simultaneously meeting the demands can also improve the intermiscibility of system to a certain extent.
Poly(lactic acid) is added mainly based on the current requirement for performances such as material system environmental protection, easy recovery, lactic acid is as the product being got by plant resources direct fermentation, there is excellent biodegradability, it has excellent rigidity simultaneously, can adapt to a certain extent the requirement of automotive trim goods, but poly(lactic acid) should adopt poly (l-lactic acid) (L component surpass 99%) as far as possible, and its content is unsuitable too high, otherwise will cause the decline of the performances such as the thermotolerance of material system and shock-resistance.
Polystyrene-poly iso-butylene-polystyrene block copolymer is for the processing characteristics, the elongation at break that improve system, if its content is too low, above-mentioned effect will be difficult to bring into play, therefore preferably add more than 25 parts, but excessive interpolation will affect the rigidity requirement of system, therefore should control its content below 35 parts.Meanwhile, improve for obtaining the performances such as elongation at break, the content of the polystyrene in polystyrene-poly iso-butylene-polystyrene block copolymer should be between 30-40%, is excessively too smallly all unfavorable for that it brings into play optimum performance.For not affecting intensity and the shaping outward appearance of system, its number-average molecular weight should be between 100000-150000 simultaneously.
Magnesium sulfate crystal whisker has excellent especially strengthening effect in material system of the present invention, all more more outstanding than the strengthening effect of common mineral filler, as long as a little adds as 3 parts of rigidity that can obviously improve system, but its addition is too much unsuitable, and the length of preferably selecting fiber is 10-15 μ m, mean diameter is the whisker of 0.5-0.8 μ m, otherwise can cause the density of system to increase and affect overall performance.Mica powder is as common mineral filler, in material system of the present invention, also there is suitable strengthening effect, in order to optimize its strengthening action, selecting length is 10-15 μ m, and slenderness ratio be greater than 10 the mica powder of sheet structure, will be than the more efficiently effect such as the mineral filler such as spherical calcium carbonate, aluminum oxide.Two kinds of mineral fillers add up to preferably can reach 15 parts, to give full play to strengthening effect, but also unsuitable excessive, otherwise can cause the deficiencies such as shock-resistance, processibility of system.
Oleylamide can significantly improve the scratch resistant performance of material system, can also improve to a certain extent the intermiscibility of material system and other resins simultaneously, for bringing into play the addition of above-mentioned effect oleylamide, at least should be 1 part, consider the addition of its mineral filler, it at least should be 1/10 of its addition simultaneously.But its addition also unsuitable too much, otherwise can cause the rigidity of system, hardness is not enough.
To sum up, adopt material prescription system of the present invention, be aided with corresponding preparation technology, can obtain intermiscibility good and there is the automotive trim goods macromolecular material of excellent scratch resistant performance, low-temperature impact-resistant performance.
Claims (7)
1. an automotive trim goods macromolecular material, it is characterized in that thering is following formula: in weight part, 100 parts of modified polypropylene resins, ethene-alpha-olefin copolymer 35-40 part, poly(lactic acid) 20-25 part, polystyrene-poly iso-butylene-polystyrene block copolymer 25-35 part, magnesium sulfate crystal whisker 3-5 part, mica powder 10-15 part, oleylamide 1-2 part.
2. macromolecular material according to claim 1, is characterized in that: described modified polypropylene resin is that wherein, in resin, the content of ethene is 7-10% through phenolic resin modified ethylene/propene atactic copolymerized polypropene, and the content of resol is 2-5%.
3. macromolecular material according to claim 1, is characterized in that: in described ethene-alpha-olefin copolymer, the content of ethene is 60-70%.
4. macromolecular material according to claim 1, is characterized in that: described poly(lactic acid) is poly (l-lactic acid).
In described polystyrene-poly iso-butylene-polystyrene block copolymer, the content of polystyrene is 50-60%, and the scope of its number-average molecular weight is between 150000-200000.
5. macromolecular material according to claim 1, is characterized in that: in described magnesium sulfate crystal whisker, the length of fiber is 10-15 μ m, and mean diameter is 0.5-0.8 μ m.
6. macromolecular material according to claim 1, is characterized in that: described mica powder is that length is 10-15 μ m, and slenderness ratio be greater than 10 sheet structure.
7. macromolecular material according to claim 1, is characterized in that: ethene-alpha-olefin copolymer is 38 parts; Poly(lactic acid) is 23 parts; Polystyrene-poly iso-butylene-polystyrene block copolymer is 30 parts; Magnesium sulfate crystal whisker and mica powder add up to 15 parts; The umber of oleylamide is at least 1/10 of magnesium sulfate crystal whisker and mica powder total amount.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310542211.3A CN103554688B (en) | 2013-11-05 | 2013-11-05 | High polymer material for automotive trim product |
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| CN201310542211.3A CN103554688B (en) | 2013-11-05 | 2013-11-05 | High polymer material for automotive trim product |
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| CN103554688A true CN103554688A (en) | 2014-02-05 |
| CN103554688B CN103554688B (en) | 2015-07-15 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105482728A (en) * | 2015-12-04 | 2016-04-13 | 张家港保税区康得菲尔实业有限公司 | Scratch resistant precoating film |
| CN109575441A (en) * | 2018-12-12 | 2019-04-05 | 上海金发科技发展有限公司 | A kind of good appearance composite polyolefine material and preparation method thereof for 3D printing |
| CN116082756A (en) * | 2023-02-07 | 2023-05-09 | 苏州恒达塑料工业有限公司 | Preparation process of automotive interior polymer material |
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| JP2009179750A (en) * | 2008-01-31 | 2009-08-13 | Fukuvi Chem Ind Co Ltd | Resin composition |
| CN101812773A (en) * | 2010-03-30 | 2010-08-25 | 奇瑞汽车股份有限公司 | Composite material for automobile interior part and production method thereof |
| CN102617930A (en) * | 2012-03-23 | 2012-08-01 | 重庆嘉良塑胶制品有限责任公司 | Decorative material for automobiles and manufacturing method for decorative material |
| CN102952336A (en) * | 2012-11-15 | 2013-03-06 | 合肥会通新材料有限公司 | Active basic magnesium sulfate whisker modified polypropylene composite material and preparation method thereof |
-
2013
- 2013-11-05 CN CN201310542211.3A patent/CN103554688B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009179750A (en) * | 2008-01-31 | 2009-08-13 | Fukuvi Chem Ind Co Ltd | Resin composition |
| CN101812773A (en) * | 2010-03-30 | 2010-08-25 | 奇瑞汽车股份有限公司 | Composite material for automobile interior part and production method thereof |
| CN102617930A (en) * | 2012-03-23 | 2012-08-01 | 重庆嘉良塑胶制品有限责任公司 | Decorative material for automobiles and manufacturing method for decorative material |
| CN102952336A (en) * | 2012-11-15 | 2013-03-06 | 合肥会通新材料有限公司 | Active basic magnesium sulfate whisker modified polypropylene composite material and preparation method thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105482728A (en) * | 2015-12-04 | 2016-04-13 | 张家港保税区康得菲尔实业有限公司 | Scratch resistant precoating film |
| CN105482728B (en) * | 2015-12-04 | 2018-10-12 | 张家港保税区康得菲尔实业有限公司 | A kind of scratch resistance pre-coating film |
| CN109575441A (en) * | 2018-12-12 | 2019-04-05 | 上海金发科技发展有限公司 | A kind of good appearance composite polyolefine material and preparation method thereof for 3D printing |
| CN109575441B (en) * | 2018-12-12 | 2021-07-30 | 上海金发科技发展有限公司 | Polyolefin composite material with good appearance for 3D printing and preparation method thereof |
| CN116082756A (en) * | 2023-02-07 | 2023-05-09 | 苏州恒达塑料工业有限公司 | Preparation process of automotive interior polymer material |
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| CN103554688B (en) | 2015-07-15 |
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Effective date of registration: 20221212 Address after: No. 388, Weinan Road, Weitang Town, Xiangcheng District, Suzhou City, Jiangsu Province, 215000 Patentee after: SUZHOU HENGDA PLASTIC INDUSTRIAL CO.,LTD. Address before: No. 388, Weinan Road, Weitang Town, Xiangcheng District, Suzhou City, Jiangsu Province, 215000 Patentee before: SUZHOU WANLONG AUTO PARTS Co.,Ltd. |