CN105542375A - High-performance polypropylene composite material applicable to thin-walled part injection molding and preparation method thereof - Google Patents

High-performance polypropylene composite material applicable to thin-walled part injection molding and preparation method thereof Download PDF

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Publication number
CN105542375A
CN105542375A CN201511020579.9A CN201511020579A CN105542375A CN 105542375 A CN105542375 A CN 105542375A CN 201511020579 A CN201511020579 A CN 201511020579A CN 105542375 A CN105542375 A CN 105542375A
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performance
thin
polypropylene
injection moulding
district
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CN201511020579.9A
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Inventor
张锴
张鹰
张祥福
周文
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Shanghai Pret Composites Co Ltd
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Shanghai Pret Composites Co Ltd
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Priority to CN201511020579.9A priority Critical patent/CN105542375A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B9/00Making granules
    • B29B9/02Making granules by dividing preformed material
    • B29B9/06Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L53/00Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers

Abstract

The invention discloses a high-performance polypropylene composite material applicable to thin-walled part injection molding and a preparation method thereof. The polypropylene composite material is prepared from the following raw materials in percentage by weight: 40-79% of polypropylene, 15-25% of high-performance inorganic filler, 5-25% of elastomer toughener, 0.1-2% of stabilizer and 0-5% of other additives. Under the optimal proportioning and synergistic actions of the high-flowability polypropylene, high-performance inorganic filler and elastomer toughener, the obtained high-performance polypropylene composite material has the advantages of high flowability, high rigidity and balanced rigidity and toughness. The high-performance inorganic filler is added from the side feed port, thereby obtaining the polypropylene composite material with better comprehensive mechanical properties. Compared with the traditional toughened strengthened polypropylene material, the material disclosed by the invention has the advantages of obviously higher flowability and rigidity, and enough impact resistance, and is very suitable for injection molding of thin-walled parts.

Description

A kind ofly can be used for high-performance polypropylene compound material of thin-walled property part injection moulding and preparation method thereof
Technical field
The present invention relates to a kind of polypropylene composite material, be specially a kind of high-performance polypropylene compound material that can be used for the injection moulding of thin-walled property part, with and preparation method thereof; Belong to polymer modification and manufacture field.
Background technology
Along with the fast development of automotive industry and the increasingly serious of energy problem, nearly all automobile factory is all being devoted to the light-weighted correlative study of car load.For plastic paste, except to mould except the direction such as Dai Gang, physics and chemical foaming, material low density, part thin-walled property also becomes one of important field of research.
Current main flow auto plastics part, the wall thickness of inside gadget is main mainly with 2.5-3.0mm greatly, exterior trim part is then large is main mainly with 3.0-3.5mm, if can under the prerequisite not affecting use, wall thickness is reduced to about 1.8-2.2mm, just greatly can reduce the gross weight of part, thus reach the object of car load loss of weight.Realize part thin-walled property, except needing except larger change on mould and structure design, only considering from material self-view, also directly cannot use conventional tough-increased and reinforced modification polypropylene material.This is because part wall thickness is greatly thinning, propose obviously higher requirement to Drawing abillity on the one hand, the mobility of material requested is far above conventional material; On the other hand, due to the reduction greatly of wall thickness, part self rigidity and weight capacity are subject to higher challenge, the anti-bending strength of original conventional polypropylene material cannot meet the demands, and need to have obviously higher intensity and modulus, density of material can not be increased or significantly reduce toughness simultaneously.
In order to realize above-mentioned target, the present invention is acted synergistically by high-performance superfine mineral filler and elastic body toughening agent, and find out optimum component proportion, and use side direction material feeding process, obtain high workability, high rigidity, have the high-performance polypropylene compound material of rigidity-toughness balanced concurrently, the injection moulding service requirements of thin-walled property part can be met.
Summary of the invention
The object of the invention is to develop a kind of high-performance polypropylene compound material that can be used for the injection moulding of thin-walled property part, for the injection moulding of automobile or household electric appliances thin-walled property component.
Another object of the present invention is the preparation method in order to provide this polypropylene composite material.
Object of the present invention can be achieved through the following technical solutions:
Can be used for a high-performance polypropylene compound material for thin-walled property part injection moulding, be made up of the raw material of following weight percents:
Wherein,
Homopolymerization or the co-polypropylene of described polypropylene to be melt flow rate (MFR) be 30-100g/10min, test condition is 230 DEG C × 2.16kg, and wherein the comonomer of co-polypropylene is ethene, and its content is 4-10mol%.
Described high-performance inorganic filler is one or more the composition in talcum powder, mica, whisker, wollastonite, glass fibre.The talcum powder of preferred average diameter 1um.
Described elastic body toughening agent is one or more the composition in polybutadiene rubber, Ethylene-Propylene-Diene rubber (EPDM), ethylene-octene copolymer, ethylene-butene copolymer etc.Optimal ethylene-octene copolymer elastomerics, melt flow rate (MFR) (230 DEG C × 2.16kg) is 0.5-10g/10min.
Described stablizer is that those skilled in the art think required primary antioxidant and auxiliary antioxidant, and wherein primary antioxidant is hindered phenol or sulphur ester antioxidant, and auxiliary antioxidant is phosphorite kind antioxidant.
Other additive described comprises one or more the composition in tinting material, nucleator, whipping agent, tensio-active agent, softening agent, coupling agent, fire retardant, photostabilizer, processing aid, antistatic auxiliary, antimicrobial auxiliary agent and the lubricant that those skilled in the art think required.
The above-mentioned preparation method that can be used for the high-performance polypropylene compound material of thin-walled property part injection moulding, its step is as follows:
1) raw material is taken by weight ratio;
2) polypropylene, high-performance inorganic filler, elastic body toughening agent, stablizer and other auxiliary agent are dry mixed 3-15 minute in super mixer, mixed raw material is added in twin screw extruder, cooling granulation after melt extruding; Wherein in barrel, temperature is: a district 190-200 DEG C, two district 190-210 DEG C, three district 190-210 DEG C, four district 190-210 DEG C, head 190-220 DEG C, and twin screw extruder rotating speed is 100-1000 rev/min.
Another kind of preferred method is: polypropylene, elastic body toughening agent, stablizer and other auxiliary agent are dry mixed in super mixer 3-15 minute obtained mixture A, mixture A is added twin screw extruder from the main spout of screw rod, high-performance inorganic filler adds twin screw extruder from screw rod medial side to spout, cooling granulation after melt extruding; Wherein in barrel, temperature is: a district 190-200 DEG C, two district 190-210 DEG C, three district 190-210 DEG C, four district 190-210 DEG C, head 190-220 DEG C, and twin screw extruder rotating speed is 100-1000 rev/min.
Advantage of the present invention is:
1, by optimal proportion and the synergy of high-flowability polypropylene, high-performance inorganic filler and elastic body toughening agent, obtain high workability, high rigidity, have the high-performance polypropylene compound material of rigidity-toughness balanced concurrently.
2, the processing method by being added from side spout by high-performance inorganic filler, obtains the better polypropylene composite material of comprehensive mechanical performance.
3, compared with traditional touchened reinforced polypropylene material, material of the present invention has obviously higher mobility and rigidity, and sufficiently high shock resistance, and the injection moulding being highly suitable for thin-walled property part uses.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail.Scope of the present invention is not by the restriction of these embodiments, and scope of the present invention proposes in detail in the claims.
In the composite-material formula of embodiment and comparative example, high-flowability polypropylene used is the block copolymerization propylene of melt flow rate (MFR) (230 DEG C × 2.16kg) 30-80/10min, plain polypropylene used is the block copolymerization propylene of melt flow rate (MFR) (230 DEG C × 2.16kg) 5-30/10min, wherein the comonomer of block copolymerization propylene is ethene, and its content is within the scope of 4-10mol%.
High-performance inorganic filler used is the talcum powder of mean diameter 1um.
Elastomerics used is the ethylene-octene copolymer 8200 of DOW company.
Stablizer used be the NegonoxDSTP (chemical name be thio-2 acid stearic alcohol ester) of ICE company of Britain, Ciba company Irganox1010 (chemical name is four [β-(3,5-di-t-butyl 4-hydroxy phenyl) propionic acid] pentaerythritol ester) and the Igrafos168 (chemical name is tricresyl phosphite (2,4-di-tert-butyl) ester) of Ciba company.
Embodiment 1
Take high-flowability polypropylene 69.5% by weight percentage, talcum powder 15%, elastic body toughening agent 15%, Irganox1010 be 0.1%, Igrafos168 is 0.1%, NegonoxDSTP is 0.3%, 5 minutes are dry mixed in super mixer, add in twin screw extruder again and melt extrude granulation, wherein in barrel, temperature is: 200 DEG C, a district, two 210 DEG C, districts, three 210 DEG C, districts, four 210 DEG C, districts, head 220 DEG C, twin screw extruder rotating speed is 400 revs/min.Particle injection molding sample preparation on injection moulding machine after drying.
Embodiment 2
Take high-flowability polypropylene 64.5% by weight percentage, talcum powder 20%, elastomerics 15%, Irganox1010 be 0.1%, Igrafos168 is 0.1%, NegonoxDSTP is 0.3%, 5 minutes are dry mixed in super mixer, add in twin screw extruder again and melt extrude granulation, wherein in barrel, temperature is: 200 DEG C, a district, two 210 DEG C, districts, three 210 DEG C, districts, four 210 DEG C, districts, head 220 DEG C, twin screw extruder rotating speed is 400 revs/min.Particle injection molding sample preparation on injection moulding machine after drying.
Embodiment 3
Take high-flowability polypropylene 59.5% by weight percentage, talcum powder 25%, elastic body toughening agent 15%, Irganox1010 be 0.1%, Igrafos168 is 0.1%, NegonoxDSTP is 0.3%, 5 minutes are dry mixed in super mixer, add in twin screw extruder again and melt extrude granulation, wherein in barrel, temperature is: 200 DEG C, a district, two 210 DEG C, districts, three 210 DEG C, districts, four 210 DEG C, districts, head 220 DEG C, twin screw extruder rotating speed is 400 revs/min.Particle injection molding sample preparation on injection moulding machine after drying.
Embodiment 4
Take high-flowability polypropylene 74.5% by weight percentage, talcum powder 20%, elastic body toughening agent 5%, Irganox1010 be 0.1%, Igrafos168 is 0.1%, NegonoxDSTP is 0.3%, 5 minutes are dry mixed in super mixer, add in twin screw extruder again and melt extrude granulation, wherein in barrel, temperature is: 200 DEG C, a district, two 210 DEG C, districts, three 210 DEG C, districts, four 210 DEG C, districts, head 220 DEG C, twin screw extruder rotating speed is 400 revs/min.Particle injection molding sample preparation on injection moulding machine after drying.
Embodiment 5
Take high-flowability polypropylene 54.5% by weight percentage, talcum powder 20%, elastomerics 25%, Irganox1010 be 0.1%, Igrafos168 is 0.1%, NegonoxDSTP is 0.3%, 5 minutes are dry mixed in super mixer, add in twin screw extruder again and melt extrude granulation, wherein in barrel, temperature is: 200 DEG C, a district, two 210 DEG C, districts, three 210 DEG C, districts, four 210 DEG C, districts, head 220 DEG C, twin screw extruder rotating speed is 400 revs/min.Particle injection molding sample preparation on injection moulding machine after drying.
Embodiment 6
Take high-flowability polypropylene 64.5% by weight percentage, elastic body toughening agent 15%, Irganox1010 be 0.1%, Igrafos168 is 0.1%, NegonoxDSTP is 0.3%, in super mixer, be dry mixed 5 minutes, obtained mixture A; Mixture A to be added in twin screw extruder to spout by screw rod medial side respectively by the main spout of screw rod, talcum powder 20% and melt extrudes granulation; Wherein in barrel, temperature is: 200 DEG C, a district, two 210 DEG C, districts, three 210 DEG C, districts, four 210 DEG C, districts, and head 220 DEG C, twin screw extruder rotating speed is 400 revs/min.Particle injection molding sample preparation on injection moulding machine after drying.Comparative example
Take plain polypropylene 64.5% by weight percentage, talcum powder 20%, elastic body toughening agent 15%, Irganox1010 be 0.1%, Igrafos168 is 0.1%, NegonoxDSTP is 0.3%, 5 minutes are dry mixed in super mixer, add in twin screw extruder again and melt extrude granulation, wherein in barrel, temperature is: 200 DEG C, a district, two 210 DEG C, districts, three 210 DEG C, districts, four 210 DEG C, districts, head 220 DEG C, twin screw extruder rotating speed is 400 revs/min.Particle injection molding sample preparation on injection moulding machine after drying.
Performance evaluation mode:
Sample rate test is undertaken by ISO1183-1 standard; Bending property test is undertaken by ISO178 standard, and specimen size is 80 × 10 × 4mm, span 64mm, rate of bending 2mm/min; Charpy Impact performance test is undertaken by ISO179-1 standard, and specimen size is 80 × 10 × 4mm, and notch depth is 1/3rd of sample thickness; Melt flow rate (MFR) is undertaken by ISO1133-1 standard, and test condition is 230 DEG C × 2.16kg.
Each embodiment and comparative example formula and the performance test results are shown in following each table:
Table 1 embodiment 1-6 and comparative example material prescription (% by weight)
Table 2 embodiment 1-6 and comparative example the performance test results
Embodiment 2 compares with comparative example can be found out, compared with traditional touchened reinforced polypropylene material, the product of embodiment 2 has obviously higher mobility and rigidity, and toughness slightly declines.Embodiment 1-3 contrast can be found out, along with the increase of filler content, rigidity of material improves gradually, and shock resistance is obvious downtrending, and density of material increases gradually simultaneously.Embodiment 2,4,5 relatively can be found out, along with the increase of elastic body toughening agent content, toughness of material improves gradually, and rigidity loss is obvious gradually.Embodiment 6 and embodiment 2 contrast and can find out, use the mode of side direction feeding to add mineral filler, can obtain higher anti-bending strength, toughness is not almost lost simultaneously, and over-all properties is better than other all embodiment.

Claims (10)

1. can be used for a high-performance polypropylene compound material for thin-walled property part injection moulding, it is characterized in that: be made up of the raw material of following weight percents:
2. a kind of high-performance polypropylene compound material that can be used for the injection moulding of thin-walled property part according to claim 1, it is characterized in that: homopolymerization or the co-polypropylene of described polypropylene to be melt flow rate (MFR) be 30-100g/10min, test condition is 230 DEG C × 2.16kg, wherein the comonomer of co-polypropylene is ethene, and its content is 4-10mol%.
3. a kind of high-performance polypropylene compound material that can be used for the injection moulding of thin-walled property part according to claim 1, is characterized in that: described high-performance inorganic filler is one or more the composition in talcum powder, mica, whisker, wollastonite, glass fibre.
4. a kind of high-performance polypropylene compound material that can be used for the injection moulding of thin-walled property part according to claim 3, is characterized in that: described high-performance inorganic filler is the talcum powder of mean diameter 1um.
5. a kind of high-performance polypropylene compound material that can be used for the injection moulding of thin-walled property part according to claim 1, is characterized in that: described elastic body toughening agent is one or more the composition in polybutadiene rubber, Ethylene-Propylene-Diene rubber (EPDM), ethylene-octene copolymer, ethylene-butene copolymer etc.
6. a kind of high-performance polypropylene compound material that can be used for the injection moulding of thin-walled property part according to claim 5, it is characterized in that: described elastic body toughening agent is ethylene-octene copolymer elastomerics, melt flow rate (MFR) is 0.5-10g/10min, and test condition is 230 DEG C × 2.16kg.
7. a kind of high-performance polypropylene compound material that can be used for the injection moulding of thin-walled property part according to claim 1, it is characterized in that: described stablizer is that those skilled in the art think required primary antioxidant and auxiliary antioxidant, wherein primary antioxidant is hindered phenol or sulphur ester antioxidant, and auxiliary antioxidant is phosphorite kind antioxidant.
8. a kind of high-performance polypropylene compound material that can be used for the injection moulding of thin-walled property part according to claim 5, is characterized in that: other additive described comprises one or more the composition in tinting material, nucleator, whipping agent, tensio-active agent, softening agent, coupling agent, fire retardant, photostabilizer, processing aid, antistatic auxiliary, antimicrobial auxiliary agent and the lubricant that those skilled in the art think required.
9. claim 1-8 one of any described in can be used for the preparation method of the high-performance polypropylene compound material of thin-walled property part injection moulding, it is characterized in that: its step is as follows:
1) raw material is taken by weight ratio;
2) polypropylene, high-performance inorganic filler, elastic body toughening agent, stablizer and other auxiliary agent are dry mixed 3-15 minute in super mixer, mixed raw material is added in twin screw extruder, cooling granulation after melt extruding; Wherein in barrel, temperature is: a district 190-200 DEG C, two district 190-210 DEG C, three district 190-210 DEG C, four district 190-210 DEG C, head 190-220 DEG C, and twin screw extruder rotating speed is 100-1000 rev/min.
10. claim 1-8 one of any described in can be used for the preparation method of the high-performance polypropylene compound material of thin-walled property part injection moulding, it is characterized in that: its step is as follows:
1) raw material is taken by weight ratio;
2) polypropylene, elastic body toughening agent, stablizer and other auxiliary agent are dry mixed 3-15 minute obtained mixture A in super mixer, mixture A is added twin screw extruder from the main spout of screw rod, high-performance inorganic filler adds twin screw extruder from screw rod medial side to spout, cooling granulation after melt extruding; Wherein in barrel, temperature is: a district 190-200 DEG C, two district 190-210 DEG C, three district 190-210 DEG C, four district 190-210 DEG C, head 190-220 DEG C, and twin screw extruder rotating speed is 100-1000 rev/min.
CN201511020579.9A 2015-12-30 2015-12-30 High-performance polypropylene composite material applicable to thin-walled part injection molding and preparation method thereof Pending CN105542375A (en)

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Cited By (11)

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CN106117814A (en) * 2016-06-23 2016-11-16 浙江普利特新材料有限公司 A kind of automotive upholstery microporous foam PP composite material and preparation method thereof
CN106675060A (en) * 2016-12-05 2017-05-17 钦州市钦南区生产力促进中心 Ternary composite material and preparation method thereof
CN106751353A (en) * 2016-12-26 2017-05-31 重庆普利特新材料有限公司 A kind of low-density that can be used for thin-walled property moulding, high-performance polypropylene compound material and preparation method thereof
CN108084562A (en) * 2017-12-20 2018-05-29 会通新材料股份有限公司 A kind of thin-walled property PP composite material of good appearance and preparation method thereof
CN108192262A (en) * 2017-12-26 2018-06-22 浙江普利特新材料有限公司 A kind of high tenacity, high convergency, high-flowability polypropylene composite material and preparation method thereof
CN108384124A (en) * 2018-03-03 2018-08-10 中山市点石塑胶有限公司 A kind of low density and high performance PP composite material and preparation method thereof can be used for being thinning moulding
CN108546385A (en) * 2018-03-13 2018-09-18 上海普利特复合材料股份有限公司 A kind of automobile seamless gasbag instrument board high-performance polypropylene compound material and preparation method thereof
CN109181110A (en) * 2018-09-30 2019-01-11 南京聚隆科技股份有限公司 A kind of thin-walled air conditioning for automobiles material and preparation method thereof
CN109438900A (en) * 2018-10-24 2019-03-08 成都金发科技新材料有限公司 A kind of PP composite material and preparation method thereof
CN110655719A (en) * 2018-06-29 2020-01-07 合肥杰事杰新材料股份有限公司 High-rigidity high-toughness low-density polypropylene composition and preparation method thereof
CN113372651A (en) * 2021-07-16 2021-09-10 北海市传创环保科技有限公司 High-strength and high-toughness polypropylene injection molding material

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CN106117814A (en) * 2016-06-23 2016-11-16 浙江普利特新材料有限公司 A kind of automotive upholstery microporous foam PP composite material and preparation method thereof
CN106675060A (en) * 2016-12-05 2017-05-17 钦州市钦南区生产力促进中心 Ternary composite material and preparation method thereof
CN106751353A (en) * 2016-12-26 2017-05-31 重庆普利特新材料有限公司 A kind of low-density that can be used for thin-walled property moulding, high-performance polypropylene compound material and preparation method thereof
CN108084562A (en) * 2017-12-20 2018-05-29 会通新材料股份有限公司 A kind of thin-walled property PP composite material of good appearance and preparation method thereof
CN108192262A (en) * 2017-12-26 2018-06-22 浙江普利特新材料有限公司 A kind of high tenacity, high convergency, high-flowability polypropylene composite material and preparation method thereof
CN108384124A (en) * 2018-03-03 2018-08-10 中山市点石塑胶有限公司 A kind of low density and high performance PP composite material and preparation method thereof can be used for being thinning moulding
CN108546385A (en) * 2018-03-13 2018-09-18 上海普利特复合材料股份有限公司 A kind of automobile seamless gasbag instrument board high-performance polypropylene compound material and preparation method thereof
CN110655719A (en) * 2018-06-29 2020-01-07 合肥杰事杰新材料股份有限公司 High-rigidity high-toughness low-density polypropylene composition and preparation method thereof
CN109181110A (en) * 2018-09-30 2019-01-11 南京聚隆科技股份有限公司 A kind of thin-walled air conditioning for automobiles material and preparation method thereof
CN109438900A (en) * 2018-10-24 2019-03-08 成都金发科技新材料有限公司 A kind of PP composite material and preparation method thereof
CN109438900B (en) * 2018-10-24 2021-06-08 成都金发科技新材料有限公司 Polypropylene composite material and preparation method thereof
CN113372651A (en) * 2021-07-16 2021-09-10 北海市传创环保科技有限公司 High-strength and high-toughness polypropylene injection molding material

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Application publication date: 20160504