CN103087429B - A kind of low-temperature impact-resistant glass fiber reinforced polypropylene composite material and Synthesis and applications thereof - Google Patents
A kind of low-temperature impact-resistant glass fiber reinforced polypropylene composite material and Synthesis and applications thereof Download PDFInfo
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Abstract
The invention provides a kind of low-temperature impact-resistant glass fiber reinforced polypropylene composite material and Synthesis and applications thereof.Matrix material of the present invention, comprises 40-90 weight part Co-polypropylene; The agent of 2-10 parts by weight of compatible; 5-45 parts by weight of glass fiber; 2-10 weight part higly branched chain polyethylene.Matrix material of the present invention, adopt High Impact Polypropylene as base-material, hexene and octene are the inhibitor that the higly branched chain polyethylene of side chain spreads as crackle, ensure good output by common double screw apparatus, cost is lower, and matrix material has good low-temperature impact-resistant performance.
Description
Technical field
The present invention relates to protective shield at the bottom of car, be specifically related to a kind of low-temperature impact-resistant glass fiber reinforced polypropylene composite material and the application of protective shield at the bottom of car.
Background technology
Protective shield at the bottom of car is the foot guard device determining body design according to various different automobile types, first be prevent earth from wrapping up engine, cause engine radiating bad, next causes the damage of the parts such as engine to prevent from driving process causing shock due to rough road surface to bottom of car, engine bottom is helped to form steady air flow in addition, the noise produced when reducing high-speed cruising, and can saving fuel oil.General automobile bottom backplate is divided into plastics, metal according to material difference.Plastic bottom backplate price inexpensively; production technique does not simply need the input of substantial contribution and high value equipment, and it is lower to produce this type of backplate entry threshold, but this material backplate is easily broken; winter is all the more so, cannot repair and not have long-term provide protection after damaged fragmentation.
Polypropylene is the kind that in automotive plastic, consumption is maximum, has the advantages such as density is little, performance good, easy processing.But the shortcomings such as polypropylene material low temperature brittleness cause its goods poor impact resistance, limit it and further apply on automobile.Glass fiber reinforced polypropylene composite material makes protective shield at the bottom of car, due to the introducing of fiberglass reinforced effect, make the strength of materials very high, but still there is the low temperature brittleness poor of material, its low temperature brittleness can be improved with toughner, but it is relatively high also to there is cost in toughner consumption, the problem that intensity obviously reduces.
Publication number is disclose a kind of high-impact, low floating fine long glass fiber-reinforced polypropylene materials in the Chinese patent application of CN102070843A, be made up of the component of following weight per-cent, long glass fiber-reinforced polypropylene master batch 10% ~ 80%, high-impact, low floating fine master batch 20% ~ 90%; The formation of described long glass fiber-reinforced polypropylene master batch is: Co-polypropylene 8% ~ 80%, homo-polypropylene 0 ~ 80%, glass 10% ~ 60%, graft polypropylene 1% ~ 10%, oxidation inhibitor 0.1% ~ 2%; The formation of described high-impact, low floating fine master batch is Co-polypropylene 20% ~ 80%, glass 0 ~ 50%, elastomerics 0 ~ 30%, grafted elastomeric 0 ~ 30%, low-viscosity polyamides resin 0 ~ 10%, oxidation inhibitor 0.1 ~ 2%, processing aid 0.2% ~ 5%.Its advantage is, high, the floating fine phenomenon of its polypropylene material surface luster of preparing is few, and the resistance to property fallen of the finished product manufactured by material is good, good processability, may be used for the relevant product replacing engineering plastics.Long glass fiber-reinforced polypropylene materials needs relatively special device fabrication, and because needs glass melt impregnation could reach due performance by good dispersion, therefore output is not high.
Publication number is the fiber glass reinforced polypropylene material disclosing a kind of high resistance thermal-oxidative aging property in the Chinese patent application of CN1696187A, discloses a kind of heat oxygen aging resistance, ultraviolet glass fiber reinforced polypropylene composite material in the Chinese patent application of publication number CN101153096A.Both reach the resistance to long-term light/heat aging performance of fiber glass reinforced polypropylene by additive compound.
Therefore, still need and develop the satisfactory glass fiber reinforced polypropylene composite material of a kind of low-temperature impact-resistant, for protective shield at the bottom of car in this area.
Summary of the invention
The object of the present invention is to provide a kind of low-temperature impact-resistant glass fiber reinforced polypropylene composite material for protective shield at the bottom of car.
Glass fiber reinforced polypropylene composite material provided by the invention, comprises following component:
Co-polypropylene 40 weight part ~ 90 weight part;
Compatilizer 2 weight part ~ 10 weight part;
Glass fibre 5 weight part ~ 45 weight part;
Higly branched chain polyethylene 2 weight part ~ 10 weight part.
Further, described matrix material also comprises following component:
Oxidation inhibitor 0.1 weight part ~ 1.5 weight part;
Lubricant 0.1 weight part ~ 0.5 weight part.
According to preference of the present invention, described Co-polypropylene is formed by ethene and copolymerization of propylene, 23 DEG C of simply supported beam notched Izod impact strength>=45kJ/m
2, 230 DEG C, 2.16kg melt flow rate (MFR)>=3g/10min.
According to preference of the present invention, described compatilizer is maleic anhydride inoculated polypropylene.
According to preference of the present invention, described glass fibre is that alkali-free short fiber or continuous alkali-free are long fine, and the diameter of described glass fibre is 9-13 μm.
According to preference of the present invention, described higly branched chain polyethylene, its side chain is hexene and/or octene.
According to preference of the present invention; described oxidation inhibitor is four [β-(3; 5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester, tricresyl phosphite (2; 4-di-tert-butyl) ester, the two octadecyl ester of thio-2 acid, the two lauryl, 1 of thio-2 acid; 3; 5-tri-(3; 5-di-tert-butyl-4-hydroxyl benzyl) tricarbimide, 1; 3; 5-tri-(3; 5-di-tert-butyl-4-hydroxyl benzyl) tricarbimide, N, N'-be two-(3-(3,5-di-tert-butyl-hydroxy phenyl) propionyl) one or more in hexanediamine.
According to preference of the present invention, described lubricant is calcium stearate, Zinic stearas.
According to preference of the present invention, described glass fiber reinforced polypropylene composite material, comprises following component:
Co-polypropylene 40 weight part ~ 75 weight part;
Compatilizer 2 weight part ~ 8 weight part;
Glass fibre 15 weight part ~ 45 weight part;
Higly branched chain polyethylene 3 weight part ~ 10 weight part.
Oxidation inhibitor 0.1 weight part ~ 0.8 weight part;
Lubricant 0.1 weight part ~ 0.5 weight part.
The preparation method of glass fiber reinforced polypropylene composite material provided by the invention, comprises the following steps:
(1) described Co-polypropylene, compatilizer, higly branched chain polyethylene are mixed and obtain mixture;
(2) extrude after adopting the mixture that step (1) obtained of twin screw extruder and described glass fibre melting and obtain described matrix material.
According to preference of the present invention, the rest materials except glass is entered twin screw extruder from main drawing-in device, dispersion is sheared in melting, and glass is entered twin screw extruder from venting port or side drawing-in device.
The barrel of described twin screw extruder is ten joint cylindrical shells, and first segment cylindrical shell connects main drawing-in device, and Section of six cylindrical shell is vented and adds fine mouth, connection side drawing-in device, and Section of nine cylindrical shell vacuumizes; Barrel temperature is set to: first segment cylindrical shell does not heat, second section cylindrical shell 180 ± 5 DEG C, section three, cylindrical shell 200 ± 5 DEG C, Section of four cylindrical shell 220 ± 5 DEG C, Section of five cylindrical shell 220 ± 5 DEG C, section six, cylindrical shell 200 ± 5 DEG C, section seven, cylindrical shell 210 ± 5 DEG C, Section of eight cylindrical shell 220 ± 5 DEG C, Section of nine cylindrical shell 220 ± 5 DEG C, protelum cylindrical shell 220 ± 5 DEG C, head 230 ± 5 DEG C; Continuous roving glass fiber adds by adding fine mouth, and short fiber is added by side feeding, regulates glass fiber content by regulating roving glass fiber radical, engine speed, main feeding and side rate of feeding; Extrude material strip cooling, drying, pelletizing, packaging.
The application of glass fiber reinforced polypropylene composite material provided by the invention, for the preparation of protective shield at the bottom of car.
Compared with prior art, tool of the present invention has the following advantages:
The present invention adopts High Impact Polypropylene as base-material, hexene and octene are the inhibitor that the higly branched chain polyethylene of side chain spreads as crackle, ensure good output by common double screw apparatus, cost is lower, and matrix material has good low-temperature impact-resistant performance.
The present invention is by entering twin screw extruder by the rest materials except glass from main drawing-in device, dispersion is sheared in melting, glass is entered twin screw extruder from venting port or side drawing-in device, is improved the consistency of glass and matrix resin by compatilizer, improve its strengthening action.Adopt and shear stronger blended screw combinations, improve higly branched chain polyethylene degree of scatter in the base, improve material at low temperature fragility.
Processed by the blending extrusion modification of the raw material of special formulation, make on its basis keeping high yield and lower cost, promote the low-temperature flexibility of polypropylene material, solve glass fiber reinforced polypropylene composite material low-temperature impact cracking, meet the application requiring of vapour bottom guard plate.
Glass fiber reinforced polypropylene composite material of the present invention, actual measurement over-all properties and Borealis's GB205U performance close, car foot guard plate can be widely used in.
Should be understood that within the scope of the present invention, above-mentioned each technical characteristic of the present invention and can combining mutually between specifically described each technical characteristic in below (eg embodiment), thus form new or preferred technical scheme.As space is limited, tiredly no longer one by one to state at this.
Embodiment
Below in conjunction with specific embodiment, set forth the present invention further.Should be understood that these embodiments are only not used in for illustration of the present invention to limit the scope of the invention.
Embodiment 1
As shown in table 1, weigh Qilu Petrochemical Co-polypropylene SP179(notched Izod impact strength>=45kJ/m
2), 68.5 weight parts, higly branched chain polyethylene LLDPE7042(raises sub-petrochemical industry) 5 weight parts, Shanghai Zhi Sheng company maleic anhydride inoculated polypropylene Compatibilizer C MG5001(MAH percentage of grafting>=1%) 5 weight parts, alkali-free continuous roving glass fiber 988A(glass diameter is 9-13 μm) 21 weight parts, antioxidant 1010 (four [β-(3, 5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester) and irgasfos 168 (three [2, 4-di-tert-butyl-phenyl] phosphorous acid ester) each 0.1 weight part, processing aid calcium stearate 0.3 weight part, after each component except glass is mixed, put into forcing machine hopper, by twin screw extruder melt blending, continuous roving glass fiber is added by venting port or short fiber is added by side spout, by regulating engine speed, main feeding and roving glass fiber radical or side rate of feeding regulate glass fiber content, extrude material strip cooling, air-dry, pelletizing, all mixed, packaging.
The barrel of described twin screw extruder is ten joint cylindrical shells, and first segment cylindrical shell connects main drawing-in device, and Section of six cylindrical shell is vented and adds fine mouth, connection side drawing-in device, and Section of nine cylindrical shell vacuumizes.Barrel temperature is set to: first segment cylindrical shell does not heat, second section cylindrical shell 180 ± 5 DEG C, section three, cylindrical shell 200 ± 5 DEG C, Section of four cylindrical shell 220 ± 5 DEG C, Section of five cylindrical shell 220 ± 5 DEG C, section six, cylindrical shell 200 ± 5 DEG C, section seven, cylindrical shell 210 ± 5 DEG C, Section of eight cylindrical shell 220 ± 5 DEG C, Section of nine cylindrical shell 220 ± 5 DEG C, protelum cylindrical shell 220 ± 5 DEG C, head 230 ± 5 DEG C.
By obtained low-temperature impact-resistant Reinforced Polypropylene granules composite material at air dry oven, 90 DEG C of dryings 1 hour, then by injection moulding machine injection moulding test bars.Density measurement is pressed DINENISO53479 standard and is performed; Ash content presses DINENISO1172 test; Tensile strength test is pressed DINENISO527-2 standard and is performed, and draw speed is 50mm/min; Bending property test is pressed DINENISO178 standard and is performed, and speed is 2mm/min; Simply supported beam unnotched impact strength is pressed DINENISO179-1 standard and is performed.-30 DEG C of simply supported beam unnotched impact strengths press DINENISO179-1 test, and sample is tested after 4h placed by-30 DEG C of cryostates.Low temperature falling sphere: by PV3905 test, thickness of sample 2mm, diameter 100mm disk, substrate band pit, ball heavy 500g, height of the fall ball 500mm, sample is tested after-40 DEG C of conditions transfer 4h, and fall sphere test completes in 10s after taking-up cryostat.
The proportioning (weight part) of each component of table 1 low-temperature impact-resistant glass fiber reinforced polypropylene composite material
Embodiment 2
As shown in table 1, weigh Qilu Petrochemical Co-polypropylene SP179(notched Izod impact strength>=45kJ/m
2) 56.5 weight parts, higly branched chain polyethylene LLDPE7042(raises sub-petrochemical industry) 7 weight parts, day rise maleic anhydride inoculated polypropylene Compatibilizer C MG5001(MAH percentage of grafting>=1%) 5 weight parts, alkali-free continuous roving glass fiber 988A(glass diameter is 9-13 μm) 31 weight parts, antioxidant 1010, 168 each 0.1 weight parts, processing aid calcium stearate 0.3 weight part, after each component except glass is mixed, put into forcing machine hopper, by twin screw extruder melt blending, continuous roving glass fiber is added by venting port or short fiber is added by side spout, by regulating engine speed, main feeding and roving glass fiber radical or side rate of feeding regulate glass fiber content, extrude material strip cooling, air-dry, pelletizing, all mixed, packaging.
Processing parameter, batten preparation condition and testing method are with embodiment 1.
Embodiment 3
As shown in table 1, weigh Qilu Petrochemical Co-polypropylene SP179(notched Izod impact strength>=45kJ/m
2) 43.5 weight parts, higly branched chain polyethylene LLDPE7042(raises sub-petrochemical industry) 10 weight parts, day rise maleic anhydride inoculated polypropylene Compatibilizer C MG5001(MAH percentage of grafting>=1%) 5 weight parts, alkali-free continuous roving glass fiber 988A(glass diameter is 9-13 μm) 41 weight parts, antioxidant 1010, 168 each 0.1 weight parts, processing aid calcium stearate 0.3 weight part, after each component except glass is mixed, put into forcing machine hopper, by twin screw extruder melt blending, continuous roving glass fiber is added by venting port or short fiber is added by side spout, by regulating engine speed, main feeding and roving glass fiber radical or side rate of feeding regulate glass fiber content, extrude material strip cooling, air-dry, pelletizing, all mixed, packaging.
Processing parameter, batten preparation condition and testing method are with embodiment 1.
Comparative example 1
As shown in table 1, weigh homo-polypropylene T30S(Maoming Petrochemical) 73.5 weight parts, day rise maleic anhydride inoculated polypropylene Compatibilizer C MG5001(MAH percentage of grafting >=1%) 5 weight parts, alkali-free continuous roving glass fiber 988A(glass diameter is 9-13 μm) 21 weight parts, antioxidant 1010, 168 each 0.1 weight parts, processing aid calcium stearate 0.3 weight part, after each component except glass is mixed, put into forcing machine hopper, by twin screw extruder melt blending, continuous roving glass fiber is added by venting port or short fiber is added by side spout, by regulating engine speed, main feeding and roving glass fiber radical or side rate of feeding regulate glass fiber content, extrude material strip cooling, air-dry, pelletizing, all mixed, packaging.
Processing parameter, batten preparation condition and testing method are with embodiment 1.
Comparative example 2
As shown in table 1, weigh homo-polypropylene T30S(Maoming Petrochemical) 58.5 weight parts, ethylene-octene copolymer POE8150(Tao Shi) 10 weight parts, few branched polyethylene HDPE5000S(raises sub-petrochemical industry) 5 weight parts, day rise maleic anhydride inoculated polypropylene Compatibilizer C MG5001(MAH percentage of grafting >=1%) 5 weight parts, alkali-free continuous roving glass fiber 988A(glass diameter is 9-13 μm) 21 weight parts, antioxidant 1010, 168 each 0.1 weight parts, processing aid calcium stearate 0.3 weight part, after each component except glass is mixed, put into forcing machine hopper, by twin screw extruder melt blending, continuous roving glass fiber is added by venting port or short fiber is added by side spout, by regulating engine speed, main feeding and roving glass fiber radical or side rate of feeding regulate glass fiber content, extrude material strip cooling, air-dry, pelletizing, all mixed, packaging.
Processing parameter, batten preparation condition and testing method are with embodiment 1.
Comparative example 3
As shown in table 1, weigh Qilu Petrochemical Co-polypropylene SP179(notched Izod impact strength>=45kJ/m
2) 73.5 weight parts, day rise maleic anhydride inoculated polypropylene Compatibilizer C MG5001(MAH percentage of grafting>=1%) 5 weight parts, alkali-free continuous roving glass fiber 988A(glass diameter is 9-13 μm) 21 weight parts, antioxidant 1010, 168 each 0.1 weight parts, processing aid calcium stearate 0.3 weight part, after each component except glass is mixed, put into forcing machine hopper, by twin screw extruder melt blending, continuous roving glass fiber is added by venting port or short fiber is added by side spout, by regulating engine speed, main feeding and roving glass fiber radical or side rate of feeding regulate glass fiber content, extrude material strip cooling, air-dry, pelletizing, all mixed, packaging.
Processing parameter, batten preparation condition and testing method are with embodiment 1.
Comparative example 4
As shown in table 1, weigh Qilu Petrochemical Co-polypropylene SP179(notched Izod impact strength>=45kJ/m
2) 58.5 weight parts, ethylene-octene copolymer POE8150(Tao Shi) 10 weight parts, few branched polyethylene HDPE5000S(raises sub-petrochemical industry) 5 weight parts, day rise maleic anhydride inoculated polypropylene Compatibilizer C MG5001(MAH percentage of grafting>=1%) 5 weight parts, alkali-free continuous roving glass fiber 988A(glass diameter is 9-13 μm) 21 weight parts, antioxidant 1010, 168 each 0.1 weight parts, processing aid calcium stearate 0.3 weight part, after each component except glass is mixed, put into forcing machine hopper, by twin screw extruder melt blending, continuous roving glass fiber is added by venting port or short fiber is added by side spout, by regulating engine speed, main feeding and roving glass fiber radical or side rate of feeding regulate glass fiber content, extrude material strip cooling, air-dry, pelletizing, all mixed, packaging.
Processing parameter, batten preparation condition and testing method are with embodiment 1.
The performance of the matrix material that table 2 is prepared for embodiment and comparative example.
The each embodiment of table 2, comparative example the performance test results
Comparative example 1-3 and comparative example 1-4 can find out, adopts the fiber glass reinforced polypropylene material prepared by the present invention to be better than comparative example in low-temperature impact-resistant performance.As can be seen from comparative example 4, Co-polypropylene just has certain low-temperature impact-resistant effect under a large amount of ethylene-octene copolymer of interpolation and few branched polyethylene are assisted, but the intensity of material obviously reduces, and the cost of material is also relatively high.
Instant invention overcomes prior art prepare protective shield at the bottom of car be subject in the winter time stone etc. impact after broken problem, ensure that material low-temperature impact-resistant simultaneously other performances of material still meet car gage requirement, and material cost is relatively low.
The all documents mentioned in the present invention are quoted as a reference all in this application, are just quoted separately as a reference as each section of document.In addition should be understood that those skilled in the art can make various changes or modifications the present invention after having read above-mentioned teachings of the present invention, these equivalent form of values fall within the application's appended claims limited range equally.
Claims (3)
1. a glass fiber reinforced polypropylene composite material, its preparation method carries out according to following step: weigh notched Izod impact strength>=45kJ/m
2qilu Petrochemical Co-polypropylene SP179, 68.5 weight parts, higly branched chain polyethylene LLDPE7042 raises sub-petrochemical industry 5 weight part, the Shanghai Zhi Sheng company maleic anhydride inoculated polypropylene Compatibilizer C MG50015 weight part of MAH percentage of grafting>=1%, glass diameter is the alkali-free continuous roving glass fiber 988A21 weight part of 9-13 μm, antioxidant 1010 four [β-(3, 5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester and irgasfos 168 three [2, 4-di-tert-butyl-phenyl] each 0.1 weight part of phosphorous acid ester, processing aid calcium stearate 0.3 weight part, after each component except glass is mixed, put into forcing machine hopper, by twin screw extruder melt blending, continuous roving glass fiber is added by venting port, by regulating engine speed, main feeding and roving glass fiber radical or side rate of feeding regulate glass fiber content, extrude material strip cooling, air-dry, pelletizing, all mixed, packaging,
The barrel of described twin screw extruder is ten joint cylindrical shells, and first segment cylindrical shell connects main drawing-in device, and Section of six cylindrical shell is vented and adds fibre, connection side drawing-in device, and Section of nine cylindrical shell vacuumizes; Barrel temperature is set to: first segment cylindrical shell does not heat, second section cylindrical shell 180 ± 5 DEG C, section three, cylindrical shell 200 ± 5 DEG C, Section of four cylindrical shell 220 ± 5 DEG C, Section of five cylindrical shell 220 ± 5 DEG C, section six, cylindrical shell 200 ± 5 DEG C, section seven, cylindrical shell 210 ± 5 DEG C, Section of eight cylindrical shell 220 ± 5 DEG C, Section of nine cylindrical shell 220 ± 5 DEG C, protelum cylindrical shell 220 ± 5 DEG C, head 230 ± 5 DEG C.
2. a glass fiber reinforced polypropylene composite material, its preparation method carries out according to following step: weigh notched Izod impact strength>=45kJ/m
2qilu Petrochemical Co-polypropylene SP179, 56.5 weight parts, higly branched chain polyethylene LLDPE7042 raises sub-petrochemical industry 7 weight part, day of MAH percentage of grafting>=1% rise maleic anhydride inoculated polypropylene Compatibilizer C MG50015 weight part, glass diameter is the alkali-free continuous roving glass fiber 988A31 weight part of 9-13 μm, antioxidant 1010, 168 each 0.1 weight parts, processing aid calcium stearate 0.3 weight part, after each component except glass is mixed, put into forcing machine hopper, by twin screw extruder melt blending, continuous roving glass fiber is added by venting port, by regulating engine speed, main feeding and roving glass fiber radical or side rate of feeding regulate glass fiber content, extrude material strip cooling, air-dry, pelletizing, all mixed, packaging.
3. a glass fiber reinforced polypropylene composite material, its preparation method carries out according to following step: weigh notched Izod impact strength>=45kJ/m
2qilu Petrochemical Co-polypropylene SP17943.5 weight part, higly branched chain polyethylene LLDPE7042 raises sub-petrochemical industry 10 weight part, day of MAH percentage of grafting>=1% rise maleic anhydride inoculated polypropylene Compatibilizer C MG50015 weight part, glass diameter is the alkali-free continuous roving glass fiber 988A41 weight part of 9-13 μm, antioxidant 1010, 168 each 0.1 weight parts, processing aid calcium stearate 0.3 weight part, after each component except glass is mixed, put into forcing machine hopper, by twin screw extruder melt blending, continuous roving glass fiber is added by venting port, by regulating engine speed, main feeding and roving glass fiber radical or side rate of feeding regulate glass fiber content, extrude material strip cooling, air-dry, pelletizing, all mixed, packaging.
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| CN104877231A (en) * | 2015-03-26 | 2015-09-02 | 苏州市德莱尔建材科技有限公司 | Low-temperature impact resistant PP and preparation method thereof |
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| CN101469093A (en) * | 2007-12-25 | 2009-07-01 | 上海普利特复合材料股份有限公司 | Ultralong unit extension glass fiber reinforced polypropylene composite material |
| CN101838423A (en) * | 2010-06-10 | 2010-09-22 | 南京聚隆科技股份有限公司 | Modified polypropylene material for thin-wall bumper and preparation method thereof |
| CN102604209A (en) * | 2012-02-20 | 2012-07-25 | 金发科技股份有限公司 | Thermal-oxidizing-aging resisting polypropylene composite |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101469093A (en) * | 2007-12-25 | 2009-07-01 | 上海普利特复合材料股份有限公司 | Ultralong unit extension glass fiber reinforced polypropylene composite material |
| CN101838423A (en) * | 2010-06-10 | 2010-09-22 | 南京聚隆科技股份有限公司 | Modified polypropylene material for thin-wall bumper and preparation method thereof |
| CN102604209A (en) * | 2012-02-20 | 2012-07-25 | 金发科技股份有限公司 | Thermal-oxidizing-aging resisting polypropylene composite |
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Address after: Qingpu Songze Avenue Industrial Park of Qingpu District 201700 Shanghai 6638 Lane 5, No. 7 Patentee after: Nakahiro Junl (Shanghai) new material Co., Ltd. Address before: Qingpu Songze Avenue Industrial Park of Qingpu District 201700 Shanghai 6638 Lane 5, No. 7 Patentee before: Shanghai Jun'er New Material Co., Ltd. |