CN104194154A - Composite polypropylene automobile material with high fluidity and low shrinking percentage and preparation method thereof - Google Patents

Composite polypropylene automobile material with high fluidity and low shrinking percentage and preparation method thereof Download PDF

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Publication number
CN104194154A
CN104194154A CN201410429517.2A CN201410429517A CN104194154A CN 104194154 A CN104194154 A CN 104194154A CN 201410429517 A CN201410429517 A CN 201410429517A CN 104194154 A CN104194154 A CN 104194154A
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CN
China
Prior art keywords
polypropylene
low
shrinkage
automotive
composite polypropylene
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CN201410429517.2A
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Chinese (zh)
Inventor
黄达成
何辉
黄代鹏
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FOSHAN SHUNDE NAN KAI NEW MATERIAL Co Ltd
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FOSHAN SHUNDE NAN KAI NEW MATERIAL Co Ltd
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Priority to CN201410429517.2A priority Critical patent/CN104194154A/en
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    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02Compositions 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
    • C08L23/10Homopolymers or copolymers of propene
    • C08L23/12Polypropene

Abstract

The invention discloses a composite polypropylene automobile material with high fluidity and low shrinking percentage and a preparation method thereof. The composite polypropylene automobile material is prepared from polypropylene, POE, talcum powder, an antioxidant, a light stabilizer and a lubricant. The composite polypropylene automobile material is good in fluidity and easy to process and the shrinking percentage is effectively reduced. The material used even in a high-temperature high-humidity environment is free from deformation and after-contraction. Meanwhile, other mechanical performance indexes of the polypropylene automobile material can be satisfied, and the polypropylene automobile material is suitable for manufacturing automobile materials of parts such as bumper bars, apron boards and door plates of the automobile. The composite polypropylene automobile material prepared from easily available raw materials is simple in production process, and the production cost can be greatly lowered.

Description

High workability low-shrinkage composite polypropylene automotive material and preparation method thereof
Technical field
The present invention relates to technical field of polymer materials, relate in particular to a kind of high workability low-shrinkage composite polypropylene automotive material and preparation method thereof.
Background technology
Along with China suddenly becomes global maximum automobile production and consumption big country, automotive light weight technology, safety, environmental protection and the energy-conservation only way that has become its industrial adjustment.Polypropylene and modified product thereof can meet the developing goals such as automotive light weight technology, low cost, environmental protection, and polypropylene is applied to automobile study on the modification aspect and also makes great progress.Plasticization of Automobile trend obviously strengthens, and plasticization of Automobile trend is polypropylene, and polypropylene material has the low (0.89-0.90g/cm of density because of it 3), mechanical property excellence, have the be full of cracks of good proof stress, antifatigue surrender and chemical resistance, low price and be easy to the features such as recovery, account for 45.6% of overall auto plastics.Approximately 900,000 tons of domestic polypropylene material market consumptions in 2011.Along with the development of automotive industry, polypropylene and the material modified inside and outside gadget of the automobile aspect that is no longer only applied to thereof also have increasing application on a lot of automobile function parts, and this must have higher requirement to polypropylene material.
Pp material degree of crystallinity approximately 70%, molding shrinkage is at 1.8-2.5%, and size is unstable, and toughness particularly low-temperature flexibility is poor, also has the lower shortcoming of bending elastic modulus, and these shortcomings are also limiting its application in automobile.In order to make polypropylene obtain good application on automobile, must carry out modification to it.Polyacrylic main method of modifying has: a large amount of filling mineral powder, and this method shortcoming is the impact property that affects material, elongation at break and visual appearance; Add glass fibre, this method shortcoming is elongation at break and the visual appearance that affects material; In CN 103059412A, use polypropylene and PMMA blend, this method shortcoming is that material impact intensity is not high.
At present, China's polypropylene material can not meet the demand of low-shrinkage, mechanical property and processing characteristics simultaneously, not yet obtain substantive breakthroughs, 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.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of high workability low-shrinkage composite polypropylene automotive material and preparation method thereof is provided.
The technical solution used in the present invention is:
A kind of high workability low-shrinkage composite polypropylene automotive material, is made by the raw material of following parts by weight:
Polypropylene 62.5-68.5 part
POE 10-16 part
Talcum powder 18-23 part
Oxidation inhibitor 0.1-0.5 part
Photostabilizer 0.1-0.5 part
Lubricant 0.2-0.6 part.
Preferably, described polypropylene is for containing the polyacrylic polypropylene miser of 20-25 weight part low-shrinkage, and the melt flow rate (MFR) of this polypropylene miser is 10-100g/10min.
Preferably, the polyacrylic shrinking percentage of described low-shrinkage is 0.8-0.9%.
Preferably, the melt flow rate (MFR) of described POE is 5-30g/10min.
Preferably, described talcous order number is 1250-5000 orders.
Preferably, described oxidation inhibitor is the compound of four (β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid) pentaerythritol ester and three [2.4-di-tert-butyl-phenyl] phosphorous acid ester.
Preferably, described photostabilizer is hindered amine light stabilizer; Described lubricant is ethylene bis stearic acid amide.
The preparation method of above-mentioned high workability low-shrinkage composite polypropylene automotive material, comprise the following steps: after polypropylene, POE, oxidation inhibitor, photostabilizer, lubricant, talcum powder are mixed, add in twin screw extruder and melt extrude, obtain high workability low-shrinkage composite polypropylene automotive material.
Preferably, melt extruding temperature is 180-230 DEG C.
Preferably, screw speed is 400-550 rev/min.
The invention has the beneficial effects as follows:
Polypropylene composite material good fluidity of the present invention, is easy to processing, and effectively reduces shrinking percentage (lower than 8.5 ‰), also can not deform and post shrinkage even if material uses in hot and humid environment; Can meet other mechanical performance indexs of polypropylene automotive material, be applicable to make the automotive material of the parts such as safety lever, skirtboard, car internal hilar plate simultaneously.
Raw material of the present invention is easy to get, and production technique is simple, thereby can make production cost significantly reduce.
Embodiment
A kind of high workability low-shrinkage composite polypropylene automotive material, is made by the raw material of following parts by weight:
Polypropylene 62.5-68.5 part
POE 10-16 part
Talcum powder 18-23 part
Oxidation inhibitor 0.1-0.5 part
Photostabilizer 0.1-0.5 part
Lubricant 0.2-0.6 part.
Preferably, described polypropylene is for containing the polyacrylic polypropylene miser of 20-25 weight part low-shrinkage, and the melt flow rate (MFR) of this polypropylene miser is 10-100g/10min.
Preferably, the polyacrylic shrinking percentage of described low-shrinkage is 0.8-0.9%.
Preferably, the melt flow rate (MFR) of described POE is 5-30g/10min.
Preferably, described talcous order number is 1250-5000 orders.
Preferably, described oxidation inhibitor is the compound of four (β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid) pentaerythritol ester and three [2.4-di-tert-butyl-phenyl] phosphorous acid ester.
Preferably, described photostabilizer is hindered amine light stabilizer; Described lubricant is ethylene bis stearic acid amide.
The preparation method of above-mentioned high workability low-shrinkage composite polypropylene automotive material, comprise the following steps: after polypropylene, POE, oxidation inhibitor, photostabilizer, lubricant, talcum powder are mixed, add in twin screw extruder and melt extrude, obtain high workability low-shrinkage composite polypropylene automotive material.
Preferably, melt extruding temperature is 180-230 DEG C.
Preferably, screw speed is 400-550 rev/min.
Further set forth content of the present invention below in conjunction with specific embodiment.
embodiment 1
The polypropylene that the melt flow rate (MFR) of getting 68.5 weight parts is 10g/10min (wherein, contains the low-shrinkage polypropylene that 20 weight part shrinking percentages are 0.8%-0.9%.), the POE that is 5g/10min with the melt flow rate (MFR) of 10 weight parts by it mixes 1 minute by high speed mixer, subsequently with primary antioxidant four (β-(3 of 0.2 weight part, 5-di-tert-butyl-hydroxy phenyl) propionic acid) pentaerythritol ester (1010), the auxiliary antioxidant three (2 of 0.1 weight part, 4-di-tert-butyl-phenyl) phosphorous acid ester (168), the photostabilizer hindered amines compound (UV3346 and V703) of 0.2 weight part, the ethylene bis stearic acid amide of 0.2 weight part, 21 weight part 1250 object talcum powder mix after 2 minutes by high speed mixer, add twin screw extruder (length-to-diameter ratio is 36:1) and melt extrude from metering feeding device, melt extrude temperature between 180-230 DEG C, screw speed is 450 revs/min, carry out cooling to the material of extruding, air-dry, pelletizing, cross strong magnetic, packaging, obtain finished product.
embodiment 2
The polypropylene that the melt flow rate (MFR) of getting 65.5 weight parts is 50g/10min (wherein, contains the low-shrinkage polypropylene that 25 weight part shrinking percentages are 0.8%-0.9%.), the POE that is 13g/10min with the melt flow rate (MFR) of 13 weight parts by it mixes 1 minute by high speed mixer, subsequently with primary antioxidant four (β-(3 of 0.2 weight part, 5-di-tert-butyl-hydroxy phenyl) propionic acid) pentaerythritol ester (1010), the auxiliary antioxidant three (2 of 0.1 weight part, 4-di-tert-butyl-phenyl) phosphorous acid ester (168), the photostabilizer hindered amines compound (UV3346 and V703) of 0.3 weight part, the ethylene bis stearic acid amide of 0.4 weight part, 21 weight part 3000 object talcum powder mix after 2 minutes by high speed mixer, add twin screw extruder (length-to-diameter ratio is 40:1) and melt extrude from metering feeding device, melt extrude temperature between 180-230 DEG C, screw speed is 500 revs/min, carry out cooling to the material of extruding, air-dry, pelletizing, cross strong magnetic, packaging, obtain finished product.
embodiment 3
The polypropylene that the melt flow rate (MFR) of getting 62.5 weight parts is 100g/10min (wherein, contains the low-shrinkage polypropylene that 20 weight part shrinking percentages are 0.8%-0.9%.), the POE that is 30g/10min with the melt flow rate (MFR) of 16 weight parts by it mixes 1 minute by high speed mixer, subsequently with primary antioxidant four (β-(3 of 0.2 weight part, 5-di-tert-butyl-hydroxy phenyl) propionic acid) pentaerythritol ester (1010), the auxiliary antioxidant three (2 of 0.1 weight part, 4-di-tert-butyl-phenyl) phosphorous acid ester (168), the photostabilizer hindered amines compound (UV3346 and V703) of 0.3 weight part, the ethylene bis stearic acid amide of 0.2 weight part, 21 weight part 5000 object talcum powder mix after 2 minutes by high speed mixer, add twin screw extruder (length-to-diameter ratio is 40:1) and melt extrude from metering feeding device, melt extrude temperature between 180-230 DEG C, screw speed is 550 revs/min, carry out cooling to the material of extruding, air-dry, pelletizing, cross strong magnetic, packaging, obtain finished product.
Finished product composite polypropylene automotive material to embodiment 1, embodiment 2 and embodiment 3 gained carries out Performance Detection, and result is as shown in the table:
Test event Testing standard Test condition Embodiment 1 Embodiment 2 Embodiment 3
Proportion (g/cm 3 GB 1033.1-2008 23℃ 1.037 1.037 1.037
Tensile strength (Mpa) GB 1040.2-2006 50mm/min 22 20 21
Flexural strength (Mpa) GB 9341-2008 2mm/min 26 23 25
Modulus in flexure (Mpa) GB 9341-2008 2mm/min 1720 1500 1680
Socle girder notched Izod impact strength (KJ/m 2 GB 1843-2008 23℃ 28 32 30
Melt flow rate (MFR) (g/10min) GB/T3682-2000 230℃,2.16KG 29 25 28
Shrinking percentage (‰) GB/T17037.4-2003 23℃,24h 8.5 7.8 8.0
Visible, polypropylene composite material good fluidity of the present invention, is easy to processing, and effectively reduces shrinking percentage (lower than 8.5 ‰), also can not deform and post shrinkage even if material uses in hot and humid environment; Can meet other mechanical performance indexs of polypropylene automotive material, be applicable to make the automotive material of the parts such as safety lever, skirtboard, car internal hilar plate simultaneously.
Raw material of the present invention is easy to get, and production technique is simple, thereby can make production cost significantly reduce.
Above-described embodiment is preferred embodiment of the present invention, and all changes of making according to technical solution of the present invention, when the function producing fails to exceed the scope of technical solution of the present invention, all belong to protection scope of the present invention.

Claims (10)

1. a high workability low-shrinkage composite polypropylene automotive material, is made by the raw material of following parts by weight:
Polypropylene 62.5-68.5 part
POE 10-16 part
Talcum powder 18-23 part
Oxidation inhibitor 0.1-0.5 part
Photostabilizer 0.1-0.5 part
Lubricant 0.2-0.6 part.
2. high workability low-shrinkage composite polypropylene automotive material according to claim 1, it is characterized in that: described polypropylene is for containing the polyacrylic polypropylene miser of 20-25 weight part low-shrinkage, and the melt flow rate (MFR) of this polypropylene miser is 10-100g/10min.
3. high workability low-shrinkage composite polypropylene automotive material according to claim 2, is characterized in that: the polyacrylic shrinking percentage of described low-shrinkage is 0.8-0.9%.
4. high workability low-shrinkage composite polypropylene automotive material according to claim 1, is characterized in that: the melt flow rate (MFR) of described POE is 5-30g/10min.
5. high workability low-shrinkage composite polypropylene automotive material according to claim 1, is characterized in that: described talcous order number is 1250-5000 orders.
6. high workability low-shrinkage composite polypropylene automotive material according to claim 1, it is characterized in that: described oxidation inhibitor is the compound of four (β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid) pentaerythritol ester and three [2.4-di-tert-butyl-phenyl] phosphorous acid ester.
7. high workability low-shrinkage composite polypropylene automotive material according to claim 1, is characterized in that: described photostabilizer is hindered amine light stabilizer; Described lubricant is ethylene bis stearic acid amide.
8. the preparation method of high workability low-shrinkage composite polypropylene automotive material described in claim 1-7 any one, comprise the following steps: after polypropylene, POE, oxidation inhibitor, photostabilizer, lubricant, talcum powder are mixed, add in twin screw extruder and melt extrude, obtain high workability low-shrinkage composite polypropylene automotive material.
9. preparation method according to claim 8, is characterized in that: melt extruding temperature is 180-230 DEG C.
10. preparation method according to claim 8 or claim 9, is characterized in that: screw speed is 400-550 rev/min.
CN201410429517.2A 2014-08-27 2014-08-27 Composite polypropylene automobile material with high fluidity and low shrinking percentage and preparation method thereof Pending CN104194154A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104789052A (en) * 2015-04-07 2015-07-22 苏勇 Moisture-proof, anti-freezing and anti-corrosion automobile coating material
CN104829949A (en) * 2015-05-29 2015-08-12 重庆工商职业学院 Automobile bumper bar
CN107841039A (en) * 2017-01-20 2018-03-27 金发科技股份有限公司 A kind of rubber toughening polypropylene compound and its application

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CN102952342A (en) * 2011-08-30 2013-03-06 中国石油化工股份有限公司 Low-shrinkage polypropylene composition and preparation method thereof
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104789052A (en) * 2015-04-07 2015-07-22 苏勇 Moisture-proof, anti-freezing and anti-corrosion automobile coating material
CN104829949A (en) * 2015-05-29 2015-08-12 重庆工商职业学院 Automobile bumper bar
CN107841039A (en) * 2017-01-20 2018-03-27 金发科技股份有限公司 A kind of rubber toughening polypropylene compound and its application
CN107841039B (en) * 2017-01-20 2020-06-09 金发科技股份有限公司 Rubber toughened polypropylene compound and application thereof

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