CN105602179A - High-rigidity, low-shrinkage and good-appearance polypropylene composite material and preparation method thereof - Google Patents

High-rigidity, low-shrinkage and good-appearance polypropylene composite material and preparation method thereof Download PDF

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Publication number
CN105602179A
CN105602179A CN201511019956.7A CN201511019956A CN105602179A CN 105602179 A CN105602179 A CN 105602179A CN 201511019956 A CN201511019956 A CN 201511019956A CN 105602179 A CN105602179 A CN 105602179A
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Prior art keywords
rigidity
good
polypropylene composite
shrinkage
agent
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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 CN201511019956.7A priority Critical patent/CN105602179A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/92Measuring, controlling or regulating
    • 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00Indexing scheme relating to extrusion moulding
    • B29C2948/92Measuring, controlling or regulating
    • B29C2948/92504Controlled parameter
    • B29C2948/9258Velocity
    • B29C2948/9259Angular velocity
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00Indexing scheme relating to extrusion moulding
    • B29C2948/92Measuring, controlling or regulating
    • B29C2948/92504Controlled parameter
    • B29C2948/92704Temperature
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00Specific properties of additives
    • C08K2201/002Physical properties
    • C08K2201/003Additives being defined by their diameter
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00Specific properties of additives
    • C08K2201/002Physical properties
    • C08K2201/004Additives being defined by their length

Abstract

The invention discloses a high-rigidity, low-shrinkage and good-appearance polypropylene composite material and a preparation method of the high-rigidity, low-shrinkage and good-appearance polypropylene composite material. The high-rigidity, low-shrinkage and good-appearance polypropylene composite material is prepared from the following raw materials in percentage by weight: 55 to 78 percent of polypropylene, 1 to 5 percent of high-performance inorganic filler, 15 to 25 percent of talcum powder, 5 to 15 percent of elastomer toughening agent, 0.1 to 2 percent of stabilizing agent and 0 to 5 percent of other additives. The high-rigidity, low-shrinkage and good-appearance polypropylene composite material and the preparation method, disclosed by the invention, have the advantages that 1, through the synergistic effect of the high-performance inorganic filler and the traditional talcum powder filler, the polypropylene composite material which is higher in rigidity and lower in shrinkage is obtained; 2, through a technological method of adding the high-performance inorganic filler from a side feeding opening, the polypropylene composite material which is better in comprehensive mechanical performance and lower in shrinkage is obtained; 3, compared with the disadvantages of a traditional short glass fiber modified material that glass fiber appearance is easy to appear and the like, the high-rigidity, low-shrinkage and good-appearance polypropylene composite material disclosed by the invention still has a good appearance which is equally matched with that of a traditional talcum powder modified polypropylene material, meanwhile, the high-rigidity, low-shrinkage and good-appearance polypropylene composite material is higher in rigidity and lower in shrinkage and is very suitable for appearance injection-molding parts which have higher requirements on rigidity and size stability.

Description

PP composite material that a kind of high rigidity, low contraction, outward appearance are good and preparation method thereof
Technical field
The present invention relates to a kind of modified polypropylene material, being specially one, to have high rigidity, low contraction, outward appearance goodGood PP composite material, with and preparation method thereof; Belong to polymer modification and manufacture field.
Background technology
Along with the fast development of auto industry and increasingly serious energy problem, Ge great automobile factory is all to mould Dai GangCarried out a large amount of research and trial with lightweight field, increasing metallic element is enhanced plastics and replacesGeneration, effectively realized car load loss of weight, but simultaneously due to the greatest differences of metal material and plastic material self withAnd the strict demand of vehicle safety, parts design and rigidity of material are had higher requirement.
For the polypropylene material having the call for automotive plastic, how the research of a direction concentrates onThe density of lightening material self as far as possible on the constant basis of performance, another direction is mainly considered how to existWith the rigidity that improves as much as possible material and goods under isopycnic condition, to press close to gradually originally as metal materialThe technical requirement of functor. In order to overcome the larger shortcoming of polypropylene material autogenous shrinkage rate, to the greatest extent can in additionThe shrinkage factor of the reduction composite of energy, obtaining the better end article of dimensional stability is also in study mainOne of hold. In current industry field, the polypropylene material that uses glass fibre to strengthen becomes this type componentFirst-selection, the rigidity that such material is higher and lower shrinkage factor can well meet the requirement of some functors.But shortcoming is also apparent, first traditional glass fiber reinforced materials is very big to the loss of toughness of material, glass in additionThe open defects such as fibre exposes also make this class material almost cannot be applied to any visual parts.
In order to address the above problem, the technical requirement of balance quality and outward appearance, the present invention is by conventional talc fine oreThing is filled the inorganic filler synergy with high length-diameter ratio, and uses the side direction expressing technique of feeding respectively, obtainsRigidity higher, toughness is better, shrinkage factor is lower, the good PP composite material of outward appearance simultaneously, has fibre concurrentlyThe advantage of dimension class filler and mineral substance filler, can be widely used in rigidity and dimensional stability had relatively high expectationsOutward appearance parts.
Summary of the invention
The object of the invention is to develop a kind of high rigidity, low contraction, the good PP composite material of outward appearance,For automobile or the common injection moulding parts of household electric appliances.
Another object of the present invention is the preparation method for this PP composite material is provided.
Object of the present invention can be achieved through the following technical solutions:
High rigidity, low contraction, the good PP composite material of outward appearance, former by following percentage by weightMaterial composition:
Wherein,
Described polypropylene is the copolymerization third that melt flow rate (MFR) (230 DEG C × 2.16kg) is 3-70g/10minAlkene, wherein the comonomer of co-polypropylene is ethene, its content is 4-10mol%.
Described high-performance inorganic filler is one or both in mica, whisker, wollastonite and glass fiber powderAbove composition, preferred average diameter 10um, the glass fiber powder of draw ratio 40.
Described elastic body toughening agent be polybutadiene rubber, ethylene-propylene-diene rubber (EPDM), ethene-The composition of one or more in octene copolymer, ethylene-butene copolymer etc., optimal ethylene-octeneCopolymer elastomer, melt flow rate (MFR) (230 DEG C × 2.16kg) is 0.5-10g/10min.
Described stabilizing agent is that those skilled in the art think required primary antioxidant and auxiliary antioxidant, wherein main anti-Oxygen agent is hindered phenol or sulphur ester antioxidant, and auxiliary antioxidant is phosphorite kind antioxidant.
Described other additive comprise those skilled in the art think required colouring agent, nucleator, blowing agent,Surfactant, plasticizer, coupling agent, fire retardant, light stabilizer, processing aid, antistatic auxiliary agent,The composition of one or more in antimicrobial auxiliary agent, lubricant.
The preparation method of the good PP composite material of above-mentioned high rigidity, low contraction, outward appearance, its step is as follows:
1) take by weight ratio raw material;
2) polypropylene, elastic body toughening agent, high-performance inorganic filler, talcum powder, stabilizing agent and other are helpedAgent is dry mixed 3-15 minute in super mixer, mixed raw material is added in double screw extruder, through moltenMelt and extrude rear cooling granulation; Wherein in barrel, temperature is: a district 190-200 DEG C, two district 190-210 DEG C, threeDistrict 190-210 DEG C, four district 190-210 DEG C, head 190-220 DEG C, double screw extruder rotating speed is 100-1000Rev/min.
Another kind of preferred method is: polypropylene, talcum powder, elastic body toughening agent, stabilizing agent and other are helpedAgent is dry mixed 3-15 minute and makes mixture A in super mixer, and mixture A is added from the main spout of screw rodEnter double screw extruder, high-performance inorganic filler adds double screw extruder from screw rod medial side to spout, warpMelt extrude rear cooling granulation; Wherein in barrel, temperature is: a district 190-200 DEG C, and two district 190-210 DEG C,Three district 190-210 DEG C, four district 190-210 DEG C, head 190-220 DEG C, double screw extruder rotating speed is 100-1000Rev/min.
Advantage of the present invention is:
1, by the synergy of high-performance inorganic filler, conventional talc powder filler, obtained higher rigidity,The more PP composite material of low-shrinkage.
2, by the process that high-performance inorganic filler is added from side spout, obtained comprehensive mechanicalThe PP composite material that energy is better, shrinkage factor is lower.
3, easily there is compared with the shortcomings such as glass emergence on the surface high-performance of the present invention with traditional short glass fiber is material modifiedPP composite material still has good outward appearance, equally matched with conventional talc powder modified polypropylene material,Simultaneously rigidity is higher, shrinkage factor is lower, is highly suitable for the outward appearance of having relatively high expectations for rigidity and dimensional stabilityUse injection-moulded plastic part.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further detail. Scope of the present invention is not implemented by theseThe restriction of example, scope of the present invention proposes in claims.
In the composite-material formula of embodiment and comparative example, polypropylene used is (230 DEG C of melt flow rate (MFR)s× 2.16kg) the block copolymerization propylene of 20-50/10min, wherein the comonomer of block copolymerization propylene is ethene,Its content is within the scope of 4-10mol%.
High-performance inorganic filler used is average diameter 10um, the glass fiber powder of draw ratio 40.
Elastomer used is the ethylene-octene copolymer 8150 of DOW company.
Talcum powder average grain diameter used is 3-5um.
Short glass fiber average diameter used is 10um, and length is 3-5mm.
Stabilizing agent used is that (chemical name is thio-2 acid tristearin for the NegonoxDSTP of ICE company of BritainAlcohol ester), (chemical name is four [β-(3,5-di-t-butyl 4-hydroxyls for the Irganox1010 of Ciba companyBase phenyl) propionic acid] pentaerythritol ester) and the Igrafos168 of Ciba company (chemical name is phosphorous acidThree (2,4-di-tert-butyl) ester).
Embodiment 1
Take by weight percentage polypropylene 69.5%, high-performance inorganic filler 1%, talcum powder 19%, elasticityBody 10%, Irganox1010 are 0.1%, Igrafos168 is 0.1%, NegonoxDSTP is 0.3%, at heightSpeed is dry mixed 5 minutes in blender, then adds and in double screw extruder, melt extrude granulation, wherein temperature in barrelFor: 200 DEG C, a district, two 210 DEG C, districts, three 210 DEG C, districts, four 210 DEG C, districts, 220 DEG C of heads, twin-screw squeezesGoing out machine rotating speed is 400 revs/min. Particle injection moulding sample preparation on injection (mo(u)lding) machine after drying.
Embodiment 2
Take by weight percentage polypropylene 69.5%, high-performance inorganic filler 3%, talcum powder 17%, elasticityBody 10%, Irganox1010 are 0.1%, Igrafos168 is 0.1%, NegonoxDSTP is 0.3%, at heightSpeed is dry mixed 5 minutes in blender, then adds and in double screw extruder, melt extrude granulation, wherein temperature in barrelFor: 200 DEG C, a district, two 210 DEG C, districts, three 210 DEG C, districts, four 210 DEG C, districts, 220 DEG C of heads, twin-screw squeezesGoing out machine rotating speed is 400 revs/min. Particle injection moulding sample preparation on injection (mo(u)lding) machine after drying.
Embodiment 3
Take by weight percentage polypropylene 69.5%, high-performance inorganic filler 5%, talcum powder 15%, elasticityBody 10%, Irganox1010 are 0.1%, Igrafos168 is 0.1%, NegonoxDSTP is 0.3%, at heightSpeed is dry mixed 5 minutes in blender, then adds and in double screw extruder, melt extrude granulation, wherein temperature in barrelFor: 200 DEG C, a district, two 210 DEG C, districts, three 210 DEG C, districts, four 210 DEG C, districts, 220 DEG C of heads, twin-screw squeezesGoing out machine rotating speed is 400 revs/min. Particle injection moulding sample preparation on injection (mo(u)lding) machine after drying.
Embodiment 4
Take by weight percentage polypropylene 74.5%, high-performance inorganic filler 3%, talcum powder 17%, elasticityBody 5%, Irganox1010 are 0.1%, Igrafos168 is 0.1%, NegonoxDSTP is 0.3%, at heightSpeed is dry mixed 5 minutes in blender, then adds and in double screw extruder, melt extrude granulation, wherein temperature in barrelFor: 200 DEG C, a district, two 210 DEG C, districts, three 210 DEG C, districts, four 210 DEG C, districts, 220 DEG C of heads, twin-screw squeezesGoing out machine rotating speed is 400 revs/min. Particle injection moulding sample preparation on injection (mo(u)lding) machine after drying.
Embodiment 5
Take by weight percentage polypropylene 64.5%, high-performance inorganic filler 3%, talcum powder 17%, elasticityBody 15%, Irganox1010 are 0.1%, Igrafos168 is 0.1%, NegonoxDSTP is 0.3%, at heightSpeed is dry mixed 5 minutes in blender, then adds and in double screw extruder, melt extrude granulation, wherein temperature in barrelFor: 200 DEG C, a district, two 210 DEG C, districts, three 210 DEG C, districts, four 210 DEG C, districts, 220 DEG C of heads, twin-screw squeezesGoing out machine rotating speed is 400 revs/min. Particle injection moulding sample preparation on injection (mo(u)lding) machine after drying. Embodiment 6
Take by weight percentage polypropylene 59.5%, high-performance inorganic filler 5%, talcum powder 25%, elasticityBody 10%, Irganox1010 are 0.1%, Igrafos168 is 0.1%, NegonoxDSTP is 0.3%, at heightSpeed is dry mixed 5 minutes in blender, then adds and in double screw extruder, melt extrude granulation, wherein temperature in barrelFor: 200 DEG C, a district, two 210 DEG C, districts, three 210 DEG C, districts, four 210 DEG C, districts, 220 DEG C of heads, twin-screw squeezesGoing out machine rotating speed is 400 revs/min. Particle injection moulding sample preparation on injection (mo(u)lding) machine after drying.
Embodiment 6
Take by weight percentage polypropylene 59.5%, talcum powder 25%, elastomer 10%, Irganox1010Be 0.1%, Igrafos168 is 0.1%, NegonoxDSTP is 0.3%, is dry mixed 5 points in super mixerClock, makes mixture A; By mixture A by the main spout of screw rod, high-performance inorganic filler 5% by screw rodPortion's side direction spout adds respectively and in double screw extruder, melt extrudes granulation; Wherein in barrel, temperature is: a district200 DEG C, two 210 DEG C, districts, three 210 DEG C, districts, four 210 DEG C, districts, 220 DEG C of heads, double screw extruder rotating speedIt is 400 revs/min. Particle injection moulding sample preparation on injection (mo(u)lding) machine after drying.
Embodiment 7
Take by weight percentage polypropylene 69.5%, talcum powder 17%, elastomer 10%, Irganox1010Be 0.1%, Igrafos168 is 0.1%, NegonoxDSTP is 0.3%, is dry mixed 5 points in super mixerClock, makes mixture A; By mixture A by the main spout of screw rod, high-performance inorganic filler 3% by screw rodPortion's side direction spout adds respectively and in double screw extruder, melt extrudes granulation; Wherein in barrel, temperature is: a district200 DEG C, two 210 DEG C, districts, three 210 DEG C, districts, four 210 DEG C, districts, 220 DEG C of heads, double screw extruder rotating speedIt is 400 revs/min. Particle injection moulding sample preparation on injection (mo(u)lding) machine after drying.
Comparative example 1
Take by weight percentage polypropylene 69.5%, talcum powder 20%, elastomer 10%, Irganox1010Be 0.1%, Igrafos168 is 0.1%, NegonoxDSTP is 0.3%, is dry mixed 5 points in super mixerClock, then add and in double screw extruder, melt extrude granulation, wherein in barrel, temperature is: 200 DEG C, a district, two210 DEG C, district, three 210 DEG C, districts, four 210 DEG C, districts, 220 DEG C of heads, double screw extruder rotating speed be 400 turn/Point. Particle injection moulding sample preparation on injection (mo(u)lding) machine after drying.
Comparative example 2
Take by weight percentage polypropylene 69.5%, talcum powder 17%, staple glass fibre 3%, elastomer 10%,Irganox1010 is 0.1%, Igrafos168 is 0.1%, NegonoxDSTP is 0.3%, at super mixerIn be dry mixed 5 minutes, then add and in double screw extruder, melt extrude granulation, wherein in barrel, temperature is: a district200 DEG C, two 210 DEG C, districts, three 210 DEG C, districts, four 210 DEG C, districts, 220 DEG C of heads, double screw extruder rotating speedIt is 400 revs/min. Particle injection moulding sample preparation on injection (mo(u)lding) machine after drying.
Performance evaluation mode:
Sample rate test is undertaken by ISO1183-1 standard; Bending property test is undertaken by ISO178 standard,Specimen size is 80 × 10 × 4mm, span 64mm, rate of bending 2mm/min; The test of simply supported beam impact propertyUndertaken by ISO179-1 standard, specimen size is 80 × 10 × 4mm, notch depth is sample thickness three pointsOne of; The test of Material shrinkage rate is undertaken by the smooth plates that is of a size of 150 × 100 × 3mm, constant temperature perseverance after injection mouldingUnder wet condition, place 48 hours, measure flow direction model length (150mm side), and according to change in sizeShrinkage from mold dimensions, observes simultaneously and evaluates model outward appearance.
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 1-2 material prescription (% by weight)
Table 2 embodiment 1-7 and comparative example the performance test results
Embodiment 1-3 and comparative example 1 relatively can find out, along with the increase of high-performance inorganic filler, material is firmProperty improves gradually, and all in various degree be better than the material that conventional talc powder is filled, simultaneously toughness slightly declines,Material shrinkage rate diminishes. Embodiment 4,2,5 contrasts and can find out, the increase of elastomer content obviously improves materialThe impact property of material, but rigidity sharply declines. Embodiment 2 relatively can find out with comparative example 2, adds equallyThe high-performance inorganic filler of amount is compared with traditional short glass fiber, and toughness and outward appearance are obviously better, comparative exampleHaving there is serious glass emergence on the surface in 2 model, cannot be applied to outward appearance plastic part. Embodiment 6 is with realExecuting example 3 contrasts can find out, the increase of talcum powder content can continue to improve the rigidity of material, but toughness decline is brightAobvious, also variation gradually of outward appearance, higher density has also been run counter to the requirement of current lightweight and energy-conserving and environment-protective simultaneously.Embodiment 7 can find out with embodiment 2 contrasts, and high-performance inorganic filler is added to extruder from side spout,Can obtain more outstanding combination property and lower shrinkage factor, have good outward appearance simultaneously, be all enforcementsOptimal case in example.

Claims (10)

1. high rigidity, low contraction, the good PP composite material of outward appearance, is characterized in that: by underThe raw material composition of row percentage by weight:
Wherein,
2. a kind of high rigidity according to claim 1, low contraction, the good polypropylene composite materials material of outward appearanceMaterial, is characterized in that: described polypropylene is that melt flow rate (MFR) is the co-polypropylene of 3-70g/10min, surveysExamination 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 rigidity according to claim 1, low contraction, the good polypropylene composite materials material of outward appearanceMaterial, described high-performance inorganic filler is one or both in mica, whisker, wollastonite and glass fiber powderAbove composition.
4. a kind of high rigidity according to claim 3, low contraction, the good polypropylene composite materials material of outward appearanceMaterial, described high-performance inorganic filler is average diameter 10um, the glass fiber powder of draw ratio 40.
5. a kind of high rigidity according to claim 1, low contraction, the good polypropylene composite materials material of outward appearanceMaterial, described elastic body toughening agent be polybutadiene rubber, ethylene-propylene-diene rubber (EPDM), ethene-The composition of one or more in octene copolymer, ethylene-butene copolymer etc.
6. a kind of high rigidity according to claim 5, low contraction, the good polypropylene composite materials material of outward appearanceMaterial, described elastic body toughening agent is ethylene-octene copolymer elastomer, melt flow rate (MFR) is0.5-10g/10min, test condition is 230 DEG C, 2.16kg.
7. a kind of high rigidity according to claim 1, low contraction, the good polypropylene composite materials material of outward appearanceMaterial, described stabilizing agent is that those skilled in the art think required primary antioxidant and auxiliary antioxidant, wherein main anti-Oxygen agent is hindered phenol or sulphur ester antioxidant, and auxiliary antioxidant is phosphorite kind antioxidant.
8. a kind of high rigidity according to claim 1, low contraction, the good polypropylene composite materials material of outward appearanceMaterial, described other additive comprise those skilled in the art think required colouring agent, nucleator, blowing agent,Surfactant, plasticizer, coupling agent, fire retardant, light stabilizer, processing aid, antistatic auxiliary agent,The composition of one or more in antimicrobial auxiliary agent, lubricant.
9. one of any described high rigidity, low contraction, the good polypropylene composite materials of outward appearance of claim 1-8The preparation method of material, is characterized in that: its step is as follows:
1) take by weight ratio raw material;
2) polypropylene, elastic body toughening agent, high-performance inorganic filler, talcum powder, stabilizing agent and other are helpedAgent is dry mixed 3-15 minute in super mixer, mixed raw material is added in double screw extruder, through moltenMelt and extrude rear cooling granulation; Wherein in barrel, temperature is: a district 190-200 DEG C, two district 190-210 DEG C, threeDistrict 190-210 DEG C, four district 190-210 DEG C, head 190-220 DEG C, double screw extruder rotating speed is 100-1000Rev/min.
10. one of any described high rigidity, low contraction, the good polypropylene composite materials of outward appearance of claim 1-8The preparation method of material, is characterized in that: its step is as follows:
1) take by weight ratio raw material;
2) by polypropylene, talcum powder, elastic body toughening agent, stabilizing agent and other auxiliary agent in super mixerBe dry mixed 3-15 minute and make mixture A, mixture A is added to double screw extruder from the main spout of screw rod,High-performance inorganic filler adds double screw extruder from screw rod medial side to spout, cooling making after melt extrudingGrain; Wherein in barrel, temperature is: a district 190-200 DEG C, and two district 190-210 DEG C, three district 190-210 DEG C,Four district 190-210 DEG C, head 190-220 DEG C, double screw extruder rotating speed is 100-1000 rev/min.
CN201511019956.7A 2015-12-30 2015-12-30 High-rigidity, low-shrinkage and good-appearance polypropylene composite material and preparation method thereof Pending CN105602179A (en)

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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
CN107501746A (en) * 2016-06-14 2017-12-22 合肥杰事杰新材料股份有限公司 A kind of replacement ABS is used for the lower shrinkage of garden instrument, high durable PP composite material and preparation method thereof
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CN109777025A (en) * 2018-12-25 2019-05-21 浙江普利特新材料有限公司 A kind of high rigidity, high tenacity, low-shrink polypropylene composite material and preparation method
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CN104177710A (en) * 2013-05-20 2014-12-03 常熟卡斯玛因厨具有限公司 Nanometer carbon fiber reinforced polypropylene alloy material
CN103589071A (en) * 2013-09-30 2014-02-19 广东聚石化学股份有限公司 Reinforced polyolefin heat-conducting plastic and preparation method thereof
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CN108892865A (en) * 2018-07-06 2018-11-27 杨敏宏 A kind of high rigidity PP composite material and preparation method thereof
CN109233098A (en) * 2018-08-23 2019-01-18 曹立军 Expanded polypropylene composite material and preparation method for automotive upholstery
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