CN106220997A - PP composite material and preparation method thereof - Google Patents
PP composite material and preparation method thereof Download PDFInfo
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- CN106220997A CN106220997A CN201610607013.4A CN201610607013A CN106220997A CN 106220997 A CN106220997 A CN 106220997A CN 201610607013 A CN201610607013 A CN 201610607013A CN 106220997 A CN106220997 A CN 106220997A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/20—Compounding polymers with additives, e.g. colouring
- C08J3/22—Compounding polymers with additives, e.g. colouring using masterbatch techniques
- C08J3/226—Compounding polymers with additives, e.g. colouring using masterbatch techniques using a polymer as a carrier
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/10—Homopolymers or copolymers of propene
- C08J2323/12—Polypropene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2427/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
- C08J2427/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
- C08J2427/12—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C08J2427/16—Homopolymers or copolymers of vinylidene fluoride
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2427/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
- C08J2427/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
- C08J2427/12—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C08J2427/18—Homopolymers or copolymers of tetrafluoroethylene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- Chemical Kinetics & Catalysis (AREA)
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- Organic Chemistry (AREA)
- Reinforced Plastic Materials (AREA)
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Abstract
The invention belongs to polymeric material field, relate to PP composite material and preparation method thereof.The present invention provides a kind of PP composite material, and described composite comprises: the polypropylene agglomerate of the long fiber reinforcement of (1) 10 90 weight portion；The modified polypropene pellet of (2) 90 10 weight portions；Wherein, described modified polypropene pellet comprises fluoropolymer.Present invention also offers the preparation method of described PP composite material.In the present invention, fluoropolymer is added only in described modified polypropene pellet, thus it does not interferes with in the polypropylene agglomerate of described long fiber reinforcement the interface cohesion between fiber and polypropylene, on the mechanical property of the PP composite material injection-molded item of long fiber reinforcement without impact.And, described fluoropolymer plays the effect of the PP composite material product surface energy reducing long fiber reinforcement, thus slows down the infiltration of water, improves anti-hydrolytic performance.
Description
Technical field
The invention belongs to polymeric material field, relate to PP composite material and preparation method thereof.
Background technology
Polypropylene has excellent mechanical property, good thermostability, chemical stability, insulating properties and outstanding sexual valence
Ratio, is widely used in the fields such as automobile, household electrical appliances, building as a kind of general-purpose plastics.After using fiber reinforcement, polypropylene material
Mechanical property be significantly improved, wherein, the PP composite material (LFT-PP) of long fiber reinforcement is because of the mechanics of its excellence
Performance, splendid cost performance, can the moulding process of scale and fast-developing.
When LFT-PP applies at the environment contacted with water such as propeller, car water kettle, washing machine inner bag, water dispenser inwall
Deng product time, for guaranteeing the use steady in a long-term of these products, the anti-hydrolytic performance of described LFT-PP requires higher.
CN201110102121.3 describes a kind of antioxidant mixture to improving fibre-reinforced PP composite material hydrolytic resistance
The effect of energy.CN201210574617.5 also uses similar antioxidant mixture to reach same purpose.But such as this area
Known to technical staff, antioxidant, the least molecule antioxidant can constantly separate out under water environment, thus reduce the resistance to of material
Oxidation and anti-hydrolytic performance；After hydrone penetrates into material internal simultaneously, the interface knot of fiber and acrylic resin can be destroyed
Close, thus reduce the mechanical property of material.
Accordingly, it is desirable to provide a kind of polypropylene composite materials, it has long-acting anti-hydrolytic performance, also has simultaneously
Excellent mechanical property, good thermostability, chemical stability, insulating properties and/or outstanding cost performance.
Summary of the invention
The purpose of example embodiment of the present invention is to solve deficiency above and other present in prior art, it is provided that
A kind of polypropylene composite materials.
On the one hand, embodiment of the present invention provides a kind of PP composite material, and described composite comprises:
(1) polypropylene agglomerate of the long fiber reinforcement of 10-90 weight portion；With
(2) the modified polypropene pellet of 90-10 weight portion；
Wherein, described modified polypropene pellet comprises fluoropolymer.
In some embodiments, the surface of described fluoropolymer can be less than 25 dynes per centimeter.
In some embodiments, described fluoropolymer is selected from politef, perfluoroethylene-propylene, polyvinylidene fluoride
Alkene, polyvinyl fluoride, polytrifluorochloroethylene, vinylidene and chlorotrifluoroethylene, vinylidene and TFE copolymer,
Vinylidene and hexafluoropropylene copolymer, CTFE and ethylene copolymer, tetrafluoroethene and ethylene copolymer and they
Arbitrary mixture.
In some embodiments, in terms of the gross mass of the polypropylene agglomerate of described long fiber reinforcement, described long fibre increases
Strong polypropylene agglomerate comprises the fiber of 5-60%；Preferably, described fiber is selected from glass fibre, basalt fibre, carbon fiber
And they arbitrary mixture.
In some embodiments, described fiber is selected from alkali-free glass fibre, it is preferable that be coated with on described fiber surface
Silane coupler and/or polypropylene emulsion.
In some embodiments, the polypropylene agglomerate of described long fiber reinforcement comprises:
The polypropylene of 40～70 weight portions,
The compatilizer of 0.5～10 weight portions,
The antioxidant of 0.05～5 weight portions,
The lubricant of 0～2 weight portions, and
The fiber of 30～60 weight portions.
In some embodiments, described compatilizer is selected from maleic anhydride inoculated polypropylene, methyl propenoic acid glycidyl
Ester graft polypropylene, acrylic acid-grafted polypropylene, acrylamide graft polypropylene and their arbitrary mixture；With
Described antioxidant selected from Hinered phenols, hindered amines, phosphorous acid esters, monothioester class and they mix arbitrarily
Thing.
In some embodiments, described modified polypropene pellet comprises:
The polypropylene of 50～99 weight portions,
The antioxidant of 0.05～5 weight portions, and
The fluoropolymer of 0.1～50 weight portions.
On the other hand, the present invention provides a kind of method preparing PP composite material of the present invention, described method bag
Include:
(1) polypropylene agglomerate of the long fiber reinforcement of 10-90 weight portion is provided；
(2) fluoropolymer is added in polypropylene, it is provided that the modified polypropene pellet of 90-10 weight portion；With
(3) by polypropylene agglomerate and the mixing of described modified polypropene pellet of described long fiber reinforcement, described poly-third is obtained
Alkene composite.
In some embodiments, in step (2), antioxidant is joined in polypropylene.
Comparing the PP composite material of routine, PP composite material of the present invention not only maintains excellent mechanics
Performance, but also there is long-acting anti-hydrolytic performance.
PP composite material of the present invention has good mechanical performance and anti-hydrolytic performance, can be applicable to spiral
Oar, washing machine inner bag, water dispenser inwall, air purifier are filled with water the product such as inner bag, car water kettle.
By detailed description below and claim, other features and aspect can be made apparent from.
Detailed description of the invention
Unless otherwise defined, the technical term or the scientific terminology that use in claims and description should be this
There is in bright art the ordinary meaning that the personage of general technical ability is understood.
In this article, be used for the amount of composition in such as composite, concentration, process temperature, process time, flow velocity and
Similar numerical value and scope thereof, or the yardstick of assembly " about " that carry out modifying with similar numerical value and scope thereof refer to it may happen that
The change of numerical quantities, such as, be derived from the manufacture for preparing material, compositions, complex, concentrate, component parts, goods
Or the general measure used by use preparation and operating process；It is derived from the accidental error during these；It is derived from for embodiment party
The purity of the manufacture of method, source or parent material or the difference of composition；And similar factor.
In this article, when providing numerical range such as 5-25, this refer to more than or equal to 5 or not less than 5 and dividually and
It is not more than 25 independently or less than or equal to 25.In certain embodiments, this scope can be defined to independently not less than 5, and
Separately and independently it is not more than 25.There is this scope such as 10-15, or the value of 10-20 is the most separately and independently with phase
Same mode includes lower limit and the higher limit of described scope.
As used herein, unless there are concrete phase antirepresentation, otherwise, " quality % " or " mass percent " of component be with
On the basis of comprising the compositions of this component or the gross mass of object.The word that term " includes " or " comprising " etc. is similar means
Element before occurring in " including " or " comprising " or object are contained and are occurred in " including " or " comprising " presented hereinafter
Element or object and equivalent element thereof, it is not excluded that other elements or object.
In the present invention, described a kind of long fibre enhanced polypropylene composite by the polypropylene agglomerate of long fiber reinforcement and
Modified polypropene pellet mixes, and wherein, the polypropylene agglomerate of described long fiber reinforcement is about 10～90 weight portions, 15-85
Weight portion, 20-80 weight portion, 30-70 weight portion, 40-60 weight portion or 45-55 weight portion, described modified polypropene pellet
It is about 90～10 weight portions, 85-15 weight portion, 80-20 weight portion, 70-30 weight portion, 60-40 weight portion or 55-45 weight
Part.
In the polypropylene agglomerate of described long fiber reinforcement, fiber quality content is about 5%～60%, 10-55%, 15-
50%, 20-45%, 25-40% or 30-35%, in terms of the gross mass of the polypropylene agglomerate of described long fiber reinforcement,
In some embodiments, the polypropylene agglomerate of described long fiber reinforcement is by the polypropylene miser dipping melted even
Continuous fiber, forms through traction, cooling, pelletizing the most again.The polypropylene agglomerate of described long fiber reinforcement is cylindrical shape, its length
Ordinarily be about 5～24mm, 8-20mm or 10-15mm, fiber quality content is about 30%～60%, 35-55% or 40-50%.
In some embodiments, the fiber in the polypropylene agglomerate of described long fiber reinforcement is selected from glass fibre, the Black Warrior
The mixture of one or more in rock fiber, carbon fiber.
In a preferred embodiment, described fiber is alkali-free glass fibre, is uniformly coated with silicon on this fiber surface
Alkane coupling agent and polypropylene emulsion.
In some embodiments, the polypropylene agglomerate of described long fiber reinforcement comprises:
40～70 weight portions, 45-65 weight portion or the polypropylene of 50-60 weight portion,
0.5～10 weight portions, 1-8 weight portion or the compatilizer of 3-5 weight portion,
0.05～5 weight portions, 0.1-4 weight portion or the antioxidant of 0.5-2.5 weight portion,
0～2 weight portions, 0.5-1.5 weight portion or the lubricant of 0.8-1.2 weight portion, and
30～60 weight portions, 35-55 weight portion or the fiber of 40-50 weight portion.
In the present invention, the weight portion of above-mentioned each component (that is, polypropylene, compatilizer, antioxidant, lubricant and fiber) can
In any combination, to provide the polypropylene agglomerate of described long fiber reinforcement.It is right to there are not needs in the weight portion of described each component
The relation answered.
In the present invention, described compatilizer and antioxidant have no particular limits, and can be the most commercially available products, and it is made
With being to meet the compatible requirement of each component of polypropylene agglomerate and antioxidation requirement.In some embodiments, described compatible
Agent is selected from maleic anhydride inoculated polypropylene, glycidyl methacrylate graft polypropylene, acrylic acid-grafted polypropylene, propylene
Acid amide-grafted polypropylene and their arbitrary mixture.In some embodiments, described antioxidant is selected from Hinered phenols, is subject to
Hindered amine, phosphorous acid esters, monothioester class and their arbitrary mixture.
In some embodiments, modified polypropene pellet of the present invention comprises:
50～99 weight portions, 60-90 weight portion or the polypropylene of 70-80 weight portion,
0.05～5 weight portions, 45-65 weight portion or the antioxidant of 50-60 weight portion, and
0.1～50 weight portions, 45-65 weight portion or the fluoropolymer of 50-60 weight portion.
In the present invention, the weight portion of above-mentioned each component (that is, polypropylene, antioxidant and fluoropolymer) can be arbitrary
Combination, to provide described modified polypropene pellet.There is not the relation that needs are corresponding in the weight portion of described each component.
In the present invention, the surface of described fluoropolymer can be less than about 30 dynes per centimeter, less than 25 dynes per centimeter or
Lower.In some embodiments, described fluoropolymer is selected from politef, perfluoroethylene-propylene, Kynoar, gathers
Fluorothene, polytrifluorochloroethylene, vinylidene and chlorotrifluoroethylene, vinylidene and TFE copolymer, inclined fluorine
Ethylene and hexafluoropropylene copolymer, CTFE and ethylene copolymer, tetrafluoroethene and ethylene copolymer and they are any
Mixture.
PP composite material of the present invention can be prepared by method described below:
(1) provide 10-90 weight portion, 15-85 weight portion, 20-80 weight portion, 30-70 weight portion, 40-60 weight portion or
The polypropylene agglomerate of the long fiber reinforcement of person's 45-55 weight portion；
(2) fluoropolymer is added in polypropylene, it is provided that 90～10 weight portions, 85-15 weight portion, 80-20 weight portion,
The modified polypropene pellet of 70-30 weight portion, 60-40 weight portion or 55-45 weight portion；With
(3) by polypropylene agglomerate and the mixing of described modified polypropene pellet of described long fiber reinforcement, described poly-third is obtained
Alkene composite.
In some embodiments, step (2) also includes 0.05～5 weight portions, 0.1-4 weight portion or 0.5-2.5 weight
The antioxidant of amount part joins in polypropylene.
In the present invention, polypropylene agglomerate and the modified polypropene pellet of described long fiber reinforcement are each independent, dividually
Formed, then obtain PP composite material of the present invention after mixing.During forming modified polypropene pellet, poly-
Propylene material adds fluoropolymer.During the polypropylene agglomerate forming long fiber reinforcement, in polypropylene material
It is added without fluoropolymer, i.e. the polypropylene agglomerate of described long fiber reinforcement contains substantially no fluoropolymer.Described " basic
Do not contain " refer to the fluoropolymer that it does not comprise intentionally or purposiveness adds, wherein may comprise and be mixed into it as impurity on a small quantity
In fluoropolymer.
In the present invention, described fluoropolymer be added only to for provide modified polypropene pellet containing polyacrylic thing
In material, thus described fluoropolymer does not interferes with in the polypropylene agglomerate of described long fiber reinforcement between fiber and polypropylene
Interface cohesion, on the mechanical property of the PP composite material injection-molded item of long fiber reinforcement without impact.And, described fluorine is birdsed of the same feather flock together
Compound plays the effect of the PP composite material product surface energy reducing long fiber reinforcement because surface energy is low, thus slows down water
Infiltration, improve the hydrolytic stability of described PP composite material goods.
Specifically, the preparation method of PP composite material of the present invention comprises the following steps:
(1) by weight portion of the present invention, by polypropylene, compatilizer, antioxidant and lubricant after high mixer mixes, add
Entering in extruder and carry out melting mixing, the temperature range of extruder is 180～250 DEG C；
(2) by melted polypropylene miser impregnating continuous fibres in maceration tank, then through traction, cooling and pelletizing,
Polypropylene agglomerate to described long fiber reinforcement；
(3) by weight portion of the present invention, by polypropylene, antioxidant and fluoropolymer after high mixer mixes, add
Melting mixing in extruder, more cooled, pelletizing, obtain described modified polypropene pellet；
(4) by weight portion of the present invention, by polypropylene agglomerate and the described modified polypropene grain of described long fiber reinforcement
Material joins high-speed mixer and mixing 5～10 minutes, obtains described PP composite material.
PP composite material of the present invention is after being molded into goods, and its surface can be less than 100 dynes per centimeter, be less than
50 dynes per centimeter, less than 30 dynes per centimeter, less than 25 dynes per centimeter or lower.
Compared with prior art, PP composite material of the present invention has an obvious advantage:
(1) only fluoropolymer is joined in described modified polypropene pellet, do not affect the poly-of described long fiber reinforcement
Interface cohesion between the production technology of propylene master batch, dipping effect and fiber and polypropylene, therefore to described long fiber reinforcement
PP composite material injection-molded item mechanical property without impact；And, have that polypropylene material itself has is good
Chemical stability, insulating properties and/or outstanding cost performance；
(2) PP composite material of described long fiber reinforcement is after being molded into goods, because of the fluoropolymer meeting added
Reduce the surface energy of goods, thus slow down the water infiltration to goods, improve hydrolytic stability；With
(3) molecular weight of described fluoropolymer is high, there is not small-molecular-weight antioxidant and separates out the problem lost efficacy.
Specific implementation method
Below in conjunction with concrete example, the present invention will be further described, but the invention is not restricted to following example.
Embodiment 1
47 parts by weight of polypropylene, 2 parts by weight maleic anhydride graft polypropylene compatilizers, 0.5 weight portion Hinered phenols are resisted
Oxygen agent 1010 (purchased from Li Anlong (Rianlon) company), 0.3 weight portion phosphite ester kind antioxidant 168 are (purchased from Li Anlong
(Rianlon) company) and 0.2 parts by weight of calcium stearate lubricant through high mixer mix 15 minutes, be then added to twin screw squeeze
Going out melting mixing in machine, the temperature range of extruder is 180～230 DEG C.
Melted polypropylene miser is impregnated in maceration tank 50 weight portion continuous print alkali-free glass fibres.Through drawing,
After cooling and pelletizing, obtain the polypropylene agglomerate of long fiber reinforcement.In this master batch, content of glass fiber is 50%, length
For 10mm.
By 93.5 parts by weight of polypropylene, 0.25 weight portion Hinered phenols antioxidant 1010,0.25 weight portion phosphorous acid esters
Irgasfos 168 and 3 parts by weight of powder shape polytetrafluoroethylene polymers mix 15 minutes through high mixer, are then added to twin screw and squeeze
Going out melting mixing in machine, the temperature range of extruder is 200～250 DEG C, obtains modified polypropene grain after cooled, pelletizing
Material.
Polypropylene agglomerate and the modified polypropene pellet of above-mentioned long fiber reinforcement are joined high mixer in the ratio of 30:70
Middle mixing 5 minutes, obtains described PP composite material.In this composite, content of glass fiber is 15%, polytetrafluoroethyl-ne
Alkene content is 2.1%.
Embodiment 2
By 95.5 parts by weight of polypropylene, 0.25 weight portion Hinered phenols antioxidant 1010,0.25 weight portion phosphorous acid esters
Irgasfos 168 and 2 weight portion Kynoar mix 15 minutes through high mixer, are then added in double screw extruder melted mixed
Closing, the temperature range of extruder is 180～230 DEG C.Modified polypropene pellet is obtained after cooled, pelletizing.
The modified polypropene grain that will obtain in the polypropylene agglomerate of the long fiber reinforcement obtained in embodiment 1 and embodiment 2
Material joins high-speed mixer and mixing 5 minutes in the ratio of 30:70, obtains described PP composite material.In this composite,
Content of glass fiber is 15%, and Kynoar content is 1.4%.
Embodiment 3
By 98.5 parts by weight of polypropylene, 0.25 weight portion Hinered phenols antioxidant 1010,0.25 weight portion phosphorous acid esters
Irgasfos 168 and 1 weight portion perfluoroethylene-propylene polymer mix 15 minutes through high mixer, are then added to double screw extruder
Middle melting mixing, the temperature range of extruder is 220～280 DEG C.Modified polypropene pellet is obtained after cooled, pelletizing.
The modified polypropene grain that will obtain in the polypropylene agglomerate of the long fiber reinforcement obtained in embodiment 1 and embodiment 3
Material joins high-speed mixer and mixing 5 minutes in the ratio of 30:70, obtains described PP composite material.In this composite,
Content of glass fiber is 15%, and perfluoroethylene-propylene content is 0.7%.
Comparative example 1
By 99.5 parts by weight of polypropylene, 0.25 weight portion Hinered phenols antioxidant 1010,0.25 weight portion phosphorous acid esters
Irgasfos 168 first mixes 15 minutes through high mixer, is then added to melting mixing in double screw extruder, the humidity province of extruder
Between be 180～220 DEG C.Modified polypropene pellet is obtained after cooled, pelletizing.
The modified polypropene grain that will obtain in the polypropylene agglomerate of the long fiber reinforcement obtained in embodiment 1 and comparative example 1
Material joins high-speed mixer and mixing 5 minutes in the ratio of 30:70, obtains PP composite material.In this composite, glass
Fiber content is 15%, and does not comprise any fluoropolymer.
Test case
The PP composite material that embodiment 1-3 and comparative example 1 obtain is molded into standard batten respectively, and test result arranges
In table 1.As known from Table 1, the fluorine-based polymer of variety classes, different content joins long fibre in the present inventive method increase
In strong PP composite material, the mechanical property of material is substantially unaffected.
The non-decocting in water of table 1, the basic physical properties result of PP composite material of long fiber reinforcement
Being placed in 95 DEG C of pure water by standard batten obtained above, decocting in water (accelerated test) time is: 50 hours, 150 little
Time, 300 hours, 500 hours.After reaching the above time, taking out sample test, result compares with the non-decocting in water performance in table 1
Relatively, the property retention rate obtained is listed in table 2～4.
Knowable to table 2～4, fluoropolymer (i.e., is only added by the PP composite material that the method for the invention prepares
In modified polypropene pellet) the stability to hydrolysis resistance of every mechanical property improved in various degree, especially in impact
Can aspect.More significantly aspect is, the PP composite material that the method for the invention prepares is at long-acting anti-hydrolytic performance
Aspect (when such as, the decocting in water time reaches more than 300 hours) shows more significantly technical advantage.Wherein, in table 2～4
The testing standard of each mechanical property is identical with described in table 1.
The stretching strength retentivity of PP composite material after table 2 different time decocting in water
The bending strength conservation rate of long fibre enhanced polypropylene composite after table 3 different time decocting in water
The impact strength conservation rate of long fibre enhanced polypropylene composite after table 4 different time decocting in water
Although invention has been described in conjunction with the specific embodiments, it will be appreciated by those skilled in the art that right
The present invention may be made that many amendments and modification.It is therefore contemplated that, claims be intended to cover true in the present invention
All such modifications in positive spirit and scope and modification.
Claims (10)
1. a PP composite material, described composite comprises:
(1) polypropylene agglomerate of the long fiber reinforcement of 10-90 weight portion；With
(2) the modified polypropene pellet of 90-10 weight portion；
Wherein, described modified polypropene pellet comprises fluoropolymer.
2. PP composite material as claimed in claim 1, wherein, the surface of described fluoropolymer can be less than 30 dyne/
Centimetre.
3. PP composite material as claimed in claim 1, wherein, described fluoropolymer is selected from politef, gathers entirely
Fluoro ethyl propene, Kynoar, polyvinyl fluoride, polytrifluorochloroethylene, vinylidene and chlorotrifluoroethylene, vinylidene
With TFE copolymer, vinylidene and hexafluoropropylene copolymer, CTFE and ethylene copolymer, tetrafluoroethene and second
Alkene copolymer and their arbitrary mixture.
4. the PP composite material as described in any one of claim 1-3, wherein, the polypropylene with described long fiber reinforcement is female
The gross mass meter of grain, the polypropylene agglomerate of described long fiber reinforcement comprises the fiber of 5-60%；Preferably, described fiber is selected from glass
Glass fiber, basalt fibre, carbon fiber and their arbitrary mixture.
5. PP composite material as claimed in claim 4, wherein, described fiber is selected from alkali-free glass fibre, it is preferable that institute
State and on fiber surface, be coated with silane coupler and/or polypropylene emulsion.
6. the PP composite material as described in any one of claim 1-3, wherein, the polypropylene agglomerate of described long fiber reinforcement
Comprise:
The polypropylene of 40～70 weight portions,
The compatilizer of 0.5～10 weight portions,
The antioxidant of 0.05～5 weight portions,
The lubricant of 0～2 weight portions, and
The fiber of 30～60 weight portions.
7. PP composite material as claimed in claim 6, wherein,
Described compatilizer connects selected from maleic anhydride inoculated polypropylene, glycidyl methacrylate graft polypropylene, acrylic acid
Branch polypropylene, acrylamide graft polypropylene and their arbitrary mixture；
Described antioxidant is selected from Hinered phenols, hindered amines, phosphorous acid esters, monothioester class and their arbitrary mixture.
8. the PP composite material as described in any one of claim 1-3, wherein, described modified polypropene pellet comprises:
The polypropylene of 50～99 weight portions,
The antioxidant of 0.05～5 weight portions, and
The fluoropolymer of 0.1～50 weight portions.
9. preparing a method for PP composite material described in any one of claim 1-8, described method includes:
(1) polypropylene agglomerate of the long fiber reinforcement of 10-90 weight portion is provided；
(2) fluoropolymer is added in polypropylene, it is provided that the modified polypropene pellet of 90-10 weight portion；With
(3) by polypropylene agglomerate and the mixing of described modified polypropene pellet of described long fiber reinforcement, described polypropylene is obtained multiple
Condensation material.
10. method as claimed in claim 9, also includes: in step (2), joined in polypropylene by antioxidant.
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| CN108530757A (en) * | 2018-04-27 | 2018-09-14 | 常州凌风超智科技信息咨询有限公司 | A kind of preparation method of washing machine lifting rib modified polypropylene material |
| CN109208180A (en) * | 2018-10-25 | 2019-01-15 | 河北华睿无纺布有限公司 | One kind is along soft non-woven fabrics and preparation method thereof |
| CN109233091A (en) * | 2018-07-27 | 2019-01-18 | 杭州联通管业有限公司 | Anticorrosive superpower polypropylene MPP power communication pipe of one kind and preparation method thereof |
| CN112662057A (en) * | 2020-12-10 | 2021-04-16 | 宁波捷安达电子绝缘材料有限公司 | High-temperature-resistant high-energy-storage composite insulating material and preparation method thereof |
| CN112831124A (en) * | 2021-01-25 | 2021-05-25 | 青岛海尔新材料研发有限公司 | Visual high-temperature-resistant hydrolysis-resistant long glass fiber reinforced polypropylene composite material for automobile water chamber |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108530757A (en) * | 2018-04-27 | 2018-09-14 | 常州凌风超智科技信息咨询有限公司 | A kind of preparation method of washing machine lifting rib modified polypropylene material |
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| CN109208180A (en) * | 2018-10-25 | 2019-01-15 | 河北华睿无纺布有限公司 | One kind is along soft non-woven fabrics and preparation method thereof |
| CN112662057A (en) * | 2020-12-10 | 2021-04-16 | 宁波捷安达电子绝缘材料有限公司 | High-temperature-resistant high-energy-storage composite insulating material and preparation method thereof |
| CN112831124A (en) * | 2021-01-25 | 2021-05-25 | 青岛海尔新材料研发有限公司 | Visual high-temperature-resistant hydrolysis-resistant long glass fiber reinforced polypropylene composite material for automobile water chamber |
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