CN104327369A - Polypropylene composition and polypropylene pellet - Google Patents
Polypropylene composition and polypropylene pellet Download PDFInfo
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- CN104327369A CN104327369A CN201310309018.5A CN201310309018A CN104327369A CN 104327369 A CN104327369 A CN 104327369A CN 201310309018 A CN201310309018 A CN 201310309018A CN 104327369 A CN104327369 A CN 104327369A
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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
- 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
- C08L23/14—Copolymers of propene
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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
- C08L2201/00—Properties
- C08L2201/10—Transparent films; Clear coatings; Transparent materials
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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
- C08L2205/24—Crystallisation aids
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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
- C08L2314/00—Polymer mixtures characterised by way of preparation
- C08L2314/02—Ziegler natta catalyst
Abstract
The invention provides a polypropylene composition and a polypropylene pellet which is prepared by heating the polypropylene composition, melting and extruding for pelleting. The polypropylene composition contains polypropylene A, polypropylene B, a nucleating agent and an antioxidant; the polypropylene A is a copolymer of propylene homopolymer and / or ethylene and propylene, the polypropylene B is a copolymer of ethylene and propylene, the content of the ethylene structure unit in the polypropylene B is 8-15% higher than the content of the ethylene structure unit in the polypropylene A, and the melting point of the polypropylene B in the heating rate of 10 DEG C / min is 90-95 DEG C lower than the melting point of the polypropylene A in the heating rate of 10 DEG C / min. The polypropylene pellet has excellent impact strength and transparency.
Description
Technical field
The present invention relates to a kind of polypropene composition and a kind of polypropylene granules.
Background technology
Polypropylene is originally as translucent material.Research shows, can improve its optical transparence after introducing a small amount of ethene in propylene polymerization processes.The transparent polypropylene composition that present stage uses is the resin based on the ethylene/propene copolymer of 1-7mol% by homo-polypropylene or ethylene content mainly, and adds glucitols or metal carboxylate nucleator, obtained after twin screw blending extrusion.The mist degree of the polypropene composition prepared by the method usually>=10%, shock strength usually≤5KJ/M
2.Although the performance requriements of general application can be met, there is the problem of transparency and toughness deficiency in some applications.
CN1675257A discloses a kind of thermoplastic polymer blend, this blend is containing the ultra-low density polyethylene (ULDPE of the 0.1-30 % by weight that has an appointment, density is 0.85-0.93g/mL, and melting index is the ethylene/propene copolymer of 0.25-50g/10min), the isotaxy ethylene/propylene olefinic random copolymer (IPP) of about 0-35 % by weight and the syndiotactic polypropylene homopolymer (SPP) of about 35-99.9 % by weight.Research shows, when the weight ratio of SPP/ULDPE/IPP is 70/20/10 or 60/20/20, when the mist degree of 1/16 inch of print is 7.1%, 23 DEG C, IZOD notched Izod impact strength is 14.9 ft-lbs/inch.
CN1659200A discloses a kind of propylene copolymer compositions and preparation method thereof, described propylene copolymer compositions comprises A) containing the propylene copolymer of the non-propylene alkene of 1-20 % by weight, and B) at least one is containing the propylene copolymer of non-propylene alkene of 5-98 % by weight, wherein said propylene copolymer compositions by two benches or multistage polymerization method, and all uses the catalyst system based on metallocene compound two stages and obtains.The propylene copolymer compositions adopting the method to obtain has higher normal temperature shock strength 45kJ/m
2higher snappiness, and component (A) and component (B) containing low ratio can by the material of n-hexane dissolution, there is good stress whitening behavior, there is excellent low-temperature impact toughness and uniform comonomer distribution simultaneously, and good sense of touch, but its properties of transparency needs to be improved further.
CN1861674A discloses a kind of polypropene composition with excellent impact resistance, modulus in flexure and transparency, and specifically disclose said composition and comprise: the high crystalline random copolymer of (a) 80-95 % by weight, this high crystalline random copolymer is the ethylene-propylene random copolymer containing 1-5 % by weight ethene and the propylene-1-butylene random copolymers containing 2-12 % by weight 1-butylene; (b) the ethylene-propylene elastomeric multipolymer of 5-20 % by weight, this ethylene-propylene elastomeric multipolymer contains 30-50 % by weight ethene, and wherein, component (b) is 1.5-35 with the melt mass flow rate ratio of component (a).Research shows, by controlling the melt mass flow rate ratio of ethylene-propylene elastomeric copolymers and ethylene-propylene random copolymer or propylene-1-butylene random copolymers, and control the mol ratio of ethylene/propene in ethylene-propylene elastomeric copolymers, ethylene-propylene elastomeric copolymers can be made with the particle diameter high dispersing being less than 1 micron, obtained melt mass flow rate>=the 20g/10min of polypropene composition at 230 DEG C, under the effect of 2.16kg counterweight, IZOD notched Izod impact strength>=9kgcm/cm, modulus in flexure >8500kg/cm
2, mist degree is 10-15%.This polypropene composition has good mechanical property, is applicable to producing cold storage container, freezing container, food container, extrusion moulding product, blow-molded article, film, thin slice and bottle stopper etc., but transparency is general.
CN101506297A discloses a kind of polypropene composition, this polypropene composition contains: (a) propylene copolymer A, it has the fusing point of less than 160 DEG C and the modulus in flexure of below 1000MPa, (b) ethylene-propylene rubber B, based on the weight of ethylene-propylene rubber B, wherein propylene content is 80-92 % by weight, wherein, described polypropene composition has at least two glass transition points below 0 DEG C, and in two glass transition points one between-45 DEG C to-5 DEG C, and the PE degree of crystallinity of wherein said polypropene composition is less than 3%.Although said composition has higher shock strength, the transparency is not enough.
CN102234400A discloses a kind of polypropene composition and preparation method thereof.Described polypropene composition contains the propylene/butene random copolymer and Mei Liken NX8000 nucleator that 1-butylene content is 0.5-7.5mol%.But although this polypropene composition has comparatively excellent rigidity and the transparency, toughness is not enough.
CN1415655A discloses a kind of preparation method of transparent polypropylene, and it is that the Low Density Polyethylene of 0.01-100g/10min or linear low density polyethylene and homo-polypropylene are blended obtained that the method comprises colophony type polypropylene nucleater and melt mass flow rate.But although this transparent polypropylene has comparatively excellent rigidity, toughness is not enough, and mist degree can only reach 30%.
CN1369519A discloses a kind of transparent polypropene composition, this polypropene composition is made up of the auxiliary anti-oxidant of the polypropylene of 99.0-99.97 % by weight, the nucleator of 0.01-0.6 % by weight, the primary antioxidant of 0.01-0.2 % by weight and 0.1-0.2 % by weight, wherein, described nucleator is combined by two kinds of nucleators.Research invention, the mist degree of this polypropene composition is less than 10%, but impact property is not enough.
CN101503539A discloses a kind of toughened cold-resistant transparent modified polypropylene material, and this polypropylene material contains homo-polypropylene, the toughner of 10-30 weight part, the α nucleator of 0.1-0.4 weight part, the beta nucleater of 0.1-0.4 weight part, the oxidation inhibitor of 0.2-0.4 weight part of 60-90 weight part.Research shows, this polypropylene material has excellent normal low temperature impact strength, but transparency is not enough.
Therefore, in order to the needs that satisfied reality uses, need a kind of polypropene composition that can have high impact strength and transparency concurrently of exploitation at present badly.
Summary of the invention
The object of the present invention is to provide a kind of new polypropene composition and by this polypropene composition heating and melting and the polypropylene granules that formed of extruding pelletization.This polypropene composition can have higher resistance to impact shock and transparency concurrently.
The invention provides a kind of polypropene composition, wherein, this polypropene composition contains polypropylene A, polypropylene B, nucleator and oxidation inhibitor; Described polypropylene A is the multipolymer of alfon and/or ethene and propylene, described polypropylene B is the multipolymer of ethene and propylene, in described polypropylene B, the content of ethylene unit unit is than ethylene unit unit content height 8-15% in polypropylene A, and the fusing point of described polypropylene B under the temperature rise rate of 10 DEG C/min 90-95 DEG C lower than the fusing point of polypropylene A under the temperature rise rate of 10 DEG C/min.
Present invention also offers a kind of polypropylene granules, this polypropylene granules mixes post-heating melting by above-mentioned polypropene composition and extruding pelletization is formed.
As can be seen from the result of embodiment, the resistance to impact shock of polypropene composition provided by the invention is not less than 7.9KJ/m
2, mist degree not higher than 7.8%, that is, can have high impact strength and transparency concurrently well.
A preferred embodiment of the invention, when the nucleator in described polypropene composition is Mei Liken NX8000, this nucleator is specially adapted to polypropene composition of the present invention, very well can induce the crystallization of described polypropylene A and polypropylene B, thus obtain the very high polypropylene granules of transparency.As can be seen from the contrast of embodiment 1 and embodiment 4, embodiment 1 adopts Mei Liken NX8000 as nucleator, the mist degree of the polypropylene granules obtained can be made to be down to 5.3%, and embodiment 4 adopts 1,3:2, two (3, the 4-dimethylbenzylidene) sorbyl alcohol of 4-is as nucleator, and the mist degree of the polypropylene granules obtained is 7.8%.
Other features and advantages of the present invention are described in detail in embodiment part subsequently.
Embodiment
Below the specific embodiment of the present invention is described in detail.Should be understood that, embodiment described herein, only for instruction and explanation of the present invention, is not limited to the present invention.
Polypropene composition provided by the invention contains polypropylene A, polypropylene B, nucleator and oxidation inhibitor; Described polypropylene A is the multipolymer of alfon and/or ethene and propylene, described polypropylene B is the multipolymer of ethene and propylene, in described polypropylene B, the content of ethylene unit unit is than ethylene unit unit content height 8-15% in polypropylene A, and the fusing point of described polypropylene B under the temperature rise rate of 10 DEG C/min 90-95 DEG C lower than the fusing point of polypropylene A under the temperature rise rate of 10 DEG C/min.
In the present invention, described fusing point adopts the test of DSC method to obtain.
According to the present invention, under preferable case, in described polypropylene A, the content of ethylene unit unit is 0-5 % by weight, and the fusing point of described polypropylene A under the temperature rise rate of 10 DEG C/min is 140-160 DEG C; In described polypropylene B, the content of ethylene unit unit is 8-16 % by weight, and the fusing point of described polypropylene B under the temperature rise rate of 10 DEG C/min is 50-65 DEG C.
According to the present invention, although as mentioned above, described polypropylene A can be alfon, also can be the multipolymer of ethene and propylene, and the content of ethylene unit unit can be 0-5 % by weight in described polypropylene A, but in order to make the polypropene composition obtained have higher transparency, under preferable case, described polypropylene A is the multipolymer of ethene and propylene, and in described polypropylene A, the content of ethylene unit unit is 2-4 % by weight.
The present invention is not particularly limited the density of described polypropylene A and polypropylene B and melt mass flow rate, but in order to make the polypropene composition obtained have higher resistance to impact shock, under preferable case, the density of described polypropylene A is 0.90-0.92g/cm
2, the melt mass flow rate at 230 DEG C, under the effect of 2.16kg counterweight is 20-30g/10min; The density of described polypropylene B is 0.85-0.88g/cm
2, the melt mass flow rate at 230 DEG C, under the effect of 2.16kg counterweight is 15-20g/10min.
Wherein, the melt mass flow rate of described polypropylene A and polypropylene B measures according to the method specified in GB/T3682-2000.Wherein, test condition comprises: temperature is 230 DEG C, and load is 2.16kg.
According to the present invention, described polypropylene A and polypropylene B can be commercially available, such as, described polypropylene A can be the polypropylene of K4925 for the trade mark produced by chemical industry two factory of China Petrochemical Industry Beijing Yanshan Mountain branch office, and described polypropylene B can be the polypropylene of VMX6202 for the trade mark produced by exxonmobil chemical company.In addition, described polypropylene A and polypropylene B also can be prepared by existing method, all can know these those skilled in the art, will repeat no more at this.
The content of the present invention to each material above-mentioned in described polypropene composition is not particularly limited, such as, with the described polypropylene A of 100 weight parts for benchmark, the content of described polypropylene B can be 2-20 weight part, the content of described nucleator can be 0.1-0.5 weight part, and the content of described oxidation inhibitor can be 0.01-0.5 weight part; Under preferable case, with the described polypropylene A of 100 weight parts for benchmark, the content of described polypropylene B is 10-20 weight part, and the content of described nucleator is 0.2-0.4 weight part, and the content of described oxidation inhibitor is 0.1-0.3 weight part.
According to the present invention, the kind of described nucleator is known to the skilled person, and can be the existing various material that can improve described polypropylene transparent, such as, can be Sorbitol Nucleator.The specific examples of described Sorbitol Nucleator includes but not limited to: 1,3:2,4-bis-(to methyl benzylidene) sorbyl alcohol (being called for short MDBS), 1,3:2,4-two (3,4-dimethylbenzylidene) one or more in sorbyl alcohol (be called for short 3988) and 1,3:2,4-bis-(to ethylbenzene methylene radical) sorbyl alcohol (abbreviation EDBS).But, the present inventor find, when described nucleator be Mei Liken NX8000(purchased from Milliken Co., the trade mark is NX8000) time, the polypropylene granules obtained can be made to have higher transparency.
According to the present invention, described oxidation inhibitor can be the existing various aging material of polypropylene that can prevent or delay, and under preferable case, described oxidation inhibitor contains primary antioxidant and aid anti-oxidants, described primary antioxidant is phenolic antioxidant, and described aid anti-oxidants is phosphite ester kind antioxidant.
The kind of the present invention to described phenolic antioxidant is not particularly limited, such as, described phenolic antioxidant can be selected from four [β-(3, 5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester (being called for short: antioxidant 1010), 1, 3, 5-trimethylammonium-2, 4, 6-(3, 5-di-t-butyl-4-hydroxyphenylmethyl) benzene (being called for short: antioxidant 330), 1, 3, 5-tri-(3, 5-di-tert-butyl-4-hydroxyl benzyl) tricarbimide (be called for short: antioxidant 3114) and β-(3, 5-di-tert-butyl-hydroxy phenyl) one or more in the positive octadecanol ester of propionic acid (be called for short: antioxidant 1076), be particularly preferably [β-(3, 5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester and/or 1, 3, 5-trimethylammonium-2, 4, 6-(3, 5-di-t-butyl-4-hydroxyphenylmethyl) benzene.
According to the present invention, the kind of the present invention to described phosphite ester kind antioxidant is not particularly limited, such as, described phosphite ester kind antioxidant such as can be selected from three (2,4-di-tert-butyl-phenyl) phosphorous acid ester (being called for short: irgasfos 168), two (2,4-DI-tert-butylphenol compounds) pentaerythritol diphosphites (being called for short: oxidation inhibitor 626) and two (2,4-di-tert-butyl-phenyl) pentaerythritol diphosphites (is called for short: one or more oxidation inhibitor PEP-36), be particularly preferably three (2,4-di-tert-butyl-phenyl) phosphorous acid ester.
The consumption of the present invention to described phenolic antioxidant and phosphite ester kind antioxidant is not particularly limited, such as, the weight ratio of described phenolic antioxidant and phosphite ester kind antioxidant can be 0.2-1:1, be preferably 0.4-0.6:1, described polypropylene granules can be made like this can to have good antioxidant, mist degree and resistance to impact shock concurrently.
As a rule, the catalyzer preparing described polypropylene A and polypropylene B is Zieger-Natta catalyst system, and it take metal chloride as carrier, has a certain amount of residues of chloride in resin.Therefore, polypropene composition of the present invention is preferably also containing acid-acceptor.Described acid-acceptor first as halogen (chlorion) absorption agent, can eliminate catalyzer residual in halogen in resin and resin, prevent it and resin effect from producing gelinite in acrylic resin, while can also prevent to equipment corrosion.
The kind of the present invention to described acid-acceptor is not particularly limited, such as, can be stearate and/or aluminate hydrates magnesiumcarbonate, be particularly preferably calcium stearate, the catalyzer remained in polypropylene can not only be removed like this, also there is lubrication, be more conducive to the machine-shaping of polypropene composition.
In addition, the consumption of the present invention to described acid-acceptor is also not particularly limited, suitably can select according to described polyacrylic content, as a rule, with the described polypropylene A of 100 weight parts for benchmark, the content of described acid-acceptor can be 0.01-0.1 weight part, is preferably 0.04-0.06 weight part.
In addition, present invention also offers and a kind ofly mix post-heating melting by above-mentioned polypropene composition and the polypropylene granules that formed of extruding pelletization.
According to the present invention, by described polypropene composition heating and melting and the method for extruding pelletization, condition and forcing machine used are conventionally known to one of skill in the art.Particularly, the mixture of souring agent polypropylene A, polypropylene B, nucleator, oxidation inhibitor and selectivity contained heating and melting extruding pelletization on the twin screw extruder.As a rule, the working conditions of described twin screw extruder comprises: screw speed is 150-360 rev/min, each zone temperatures be respectively 170-230 DEG C, 175-240 DEG C, 180-250 DEG C, 180-250 DEG C, 180-250 DEG C, 175-240 DEG C, the vacuum tightness of each section is extruding pelletization under the condition of 0.02-0.09MPa.Vacuum tightness in this specification sheets refers to the absolute value of the difference of absolute pressure and barometric point.
In addition, in order to make the polypropylene granules that obtains more even, under preferable case, polypropylene granules provided by the invention is also included in before polypropene composition heating and melting, and the acid-acceptor first described polypropylene A, polypropylene B, nucleator, oxidation inhibitor and selectivity contained and tensio-active agent join in existing various mixing equipment and be uniformly mixed.Wherein, described mixing equipment can be such as stirrer, kneader, mill and Banbury mixer etc.The temperature and time be uniformly mixed is conventionally known to one of skill in the art, and such as, the temperature be uniformly mixed can be 25-65 DEG C, and the time be uniformly mixed can be 5-30 minute, and the rotating speed be uniformly mixed can be 50-300 rev/min.
Below will be described the present invention by embodiment.
In following examples and comparative example, nucleator Mei Liken NX8000 is purchased from Milliken Co., and the trade mark is NX8000.
In following examples and comparative example:
The melt mass flow rate of polypropylene A and polypropylene B measures according to the method specified in GB/T3682-2000, and wherein, test condition comprises: temperature is 230 DEG C, and load is 2.16 kilograms.The fusing point of polypropylene A and polypropylene B measures according to the method specified in ASTM D3418-08.Wherein, test condition comprises: temperature rise rate is 10 DEG C/min.Ethene in polypropylene A and polypropylene B and propylene structural unit content adopt the model purchased from Bruker company of Switzerland to be that the nuclear magnetic resonance spectrometer of BRUKER400 measures, and wherein, solvent is deuterated orthodichlorobenzene.
Embodiment 1
This embodiment is for illustration of the preparation method of polypropene composition provided by the invention and polypropylene granules.
By the K4925 that 90 chemical industry two factories of parts by weight of polypropylene A(China Petrochemical Industry Beijing Yanshan Mountain branch office produce, the content of propylene structural unit is 97 % by weight, the content of ethylene unit unit is 3.0 % by weight, fusing point under the temperature rise rate of 10 DEG C/min is 150 DEG C, melt mass flow rate at 230 DEG C, under the effect of 2.16kg counterweight is 25g/10min, and density is 0.905g/cm
3), 10 parts by weight of polypropylene B(exxonmobil chemical company produce the trade mark be the polypropylene of VMX6206, the content of propylene structural unit is 85 % by weight, the content of ethylene unit unit is 15 % by weight, fusing point under the temperature rise rate of 10 DEG C/min is 56 DEG C, melt mass flow rate at 230 DEG C, under the effect of 2.16kg counterweight is 18g/10min, and density is 0.860g/cm
3), the Mei Liken NX8000 of 0.4 weight part, [β-(3 of 0.05 weight part, 5 di-t-butyl 4-hydroxy-pheny) propionic acid] pentaerythritol ester (antioxidant 1010), 0.1 weight part three (2,4-di-tert-butyl-phenyl) phosphorous acid ester (irgasfos 168), 0.05 weight part calcium stearate mix at normal temperature 25 DEG C, and the mixture obtained is sent in twin screw extruder, the rotating speed of adjustment screw rod is 150 revs/min, and each zone temperatures controls at 180 DEG C, 190 DEG C, 200 DEG C, 200 DEG C, 200 DEG C and 190 DEG C respectively; The vacuum tightness of each section remains on 0.02-0.09MPa; Mixture in the screw rod and cylindrical shell of above-mentioned forcing machine, after melting, shearing, dispersion, compression, exhaust, plasticizing, then extrude through die head, pelletizing, obtain polypropylene granules P1.
Embodiment 2
This embodiment is for illustration of the preparation method of polypropene composition provided by the invention and polypropylene granules.
The trade mark 85 Yanshan Mountain, parts by weight of polypropylene A(China Petrochemical Industry Beijing companies of branch office produced is the polypropylene of K4925, the content of propylene structural unit is 97 % by weight, the content of ethylene unit unit is 3.0 % by weight, fusing point under the temperature rise rate of 10 DEG C/min is DEG C, melt mass flow rate at 230 DEG C, under the effect of 2.16kg counterweight is 25g/10min, and density is 0.905g/cm
3), 15 parts by weight of polypropylene B(exxonmobil chemical company produce the trade mark be the polypropylene of VMX6206, the content of propylene structural unit is 85 % by weight, the content of ethylene unit unit is 15 % by weight, fusing point under the temperature rise rate of 10 DEG C/min is DEG C, melt mass flow rate at 230 DEG C, under the effect of 2.16kg counterweight is 18g/10min, and density is 0.860g/cm
3), the Mei Liken NX8000 of 0.4 weight part, [β-(3 of 0.05 weight part, 5 di-t-butyl 4-hydroxy-pheny) propionic acid] pentaerythritol ester (antioxidant 1010), 0.1 weight part three (2,4-di-tert-butyl-phenyl) phosphorous acid ester (irgasfos 168), 0.05 weight part calcium stearate mix at normal temperature 25 DEG C, and the mixture obtained is sent in twin screw extruder, the rotating speed of adjustment screw rod is 150 revs/min, and each zone temperatures controls at 180 DEG C, 190 DEG C, 200 DEG C, 200 DEG C, 200 DEG C and 190 DEG C respectively; The vacuum tightness of each section remains on 0.02-0.09MPa; Mixture in the screw rod and cylindrical shell of above-mentioned forcing machine, after melting, shearing, dispersion, compression, exhaust, plasticizing, then extrude through die head, pelletizing, obtain polypropylene granules P2.
Embodiment 3
This embodiment is for illustration of the preparation method of polypropene composition provided by the invention and polypropylene granules.
The trade mark 80 Yanshan Mountain, parts by weight of polypropylene A(China Petrochemical Industry Beijing companies of branch office produced is the polypropylene of K4925, the content of propylene structural unit is 97 % by weight, the content of ethylene unit unit is 3.0 % by weight, fusing point under the temperature rise rate of 10 DEG C/min is 150 DEG C, melt mass flow rate at 230 DEG C, under the effect of 2.16kg counterweight is 25g/10min, and density is 0.905g/cm
3), 20 parts by weight of polypropylene B(exxonmobil chemical company produce the trade mark be the polypropylene of VMX6206, the content of propylene structural unit is 85 % by weight, the content of ethylene unit unit is 15 % by weight, fusing point under the temperature rise rate of 10 DEG C/min is 56 DEG C, melt mass flow rate at 230 DEG C, under the effect of 2.16kg counterweight is 18g/10min, and density is 0.860g/cm
3), the Mei Liken NX8000 of 0.4 weight part, [β-(3 of 0.05 weight part, 5 di-t-butyl 4-hydroxy-pheny) propionic acid] pentaerythritol ester (antioxidant 1010), 0.1 weight part three (2,4-di-tert-butyl-phenyl) phosphorous acid ester (irgasfos 168), 0.05 weight part calcium stearate mix at normal temperature 25 DEG C, and the mixture obtained is sent in twin screw extruder, the rotating speed of adjustment screw rod is 150 revs/min, and each zone temperatures controls at 180 DEG C, 190 DEG C, 200 DEG C, 200 DEG C, 200 DEG C and 190 DEG C respectively; The vacuum tightness of each section remains on 0.02-0.09MPa; Mixture in the screw rod and cylindrical shell of above-mentioned forcing machine, after melting, shearing, dispersion, compression, exhaust, plasticizing, then extrude through die head, pelletizing, obtain polypropylene granules P3.
Embodiment 4
This embodiment is for illustration of the preparation method of polypropene composition provided by the invention and polypropylene granules.
Polypropylene granules is prepared according to the method for embodiment 1, unlike, 1,3:2,4-two (3,4-dimethylbenzylidene) sorbyl alcohol of described Mei Liken NX8000 identical weight part substitutes, and obtains polypropylene granules P4.
Embodiment 5
This embodiment is for illustration of the preparation method of polypropene composition provided by the invention and polypropylene granules.
Polypropylene granules is prepared according to the method for embodiment 1, unlike, in preparation process, (trade mark that the Yanshan Mountain, China Petrochemical Industry Beijing company of branch office produces is the polypropylene of T1701 to described polypropylene A homopolymer polypropylene, fusing point under the temperature rise rate of 10 DEG C/min is 165 DEG C, melt mass flow rate at 230 DEG C, under the effect of 2.16kg counterweight is 1.0g/10min, and density is 0.908g/cm
3) substitute, obtain polypropylene granules P5.
Comparative example 1
This comparative example is for illustration of the preparation method of reference polypropylene composition and polypropylene granules.
Polypropylene granules is prepared according to the method for embodiment 1, unlike, the polypropylene A of described polypropylene B identical weight part substitutes, and obtains reference polypropylene pellet DP1.
Comparative example 2
This comparative example is for illustration of the preparation method of reference polypropylene composition and polypropylene granules.
Polypropylene granules is prepared according to the method for embodiment 1, unlike, do not add Mei Liken NX8000, obtain reference polypropylene pellet DP2.
Comparative example 3
This comparative example is for illustration of the preparation method of reference polypropylene composition and polypropylene granules.
Polypropylene granules is prepared according to the method for embodiment 1, unlike, (trade mark that Dow Chemical produces is POE8200 to the propylene/octene copolymer of described polypropylene B identical weight part, the content of ethylene unit unit is 62 % by weight, the content of octene structural unit is 38 % by weight, fusing point under the temperature rise rate of 10 DEG C/min 59 DEG C, the melt mass flow rate at 230 DEG C, under the effect of 2.16kg counterweight is 5g/10min, and density is 0.870g/cm
3) substitute, obtain reference polypropylene pellet DP3.
Test case 1-5
Test case 1-5 tests for illustration of the performance of polypropylene granules P1-P5 provided by the invention.
(1) mist degree: measure according to the method specified in GB/T2410-2008, wherein, the thickness of injection-molded plaques is 1mm, and acquired results is as shown in table 1;
(2) simply supported beam notched Izod impact strength: measure according to the method specified in GB/T1043.1-2008, acquired results is as shown in table 1;
(3) mensuration of melt mass flow rate: measure according to the method specified in GB/T3682-2000, wherein, test condition comprises: temperature is 230 DEG C, and load is 2.16 kilograms, and acquired results is as shown in table 1.
Contrast test example 1-3
Contrast test example 1-3 is for illustration of the test of reference polypropylene granule performance.
Test according to the performance of method to reference polypropylene pellet DP1-DP3 of test case 1-5, acquired results is as shown in table 1.
Table 1
From the results shown in Table 1, the resistance to impact shock of polypropylene granules provided by the invention is not less than 7.9KJ/m
2mPa, mist degree not higher than 7.8%, that is, can have excellent resistance to impact shock and transparency concurrently well.As can be seen from the contrast of embodiment 1 and embodiment 4, when the nucleator in described polypropene composition is Mei Liken NX8000, this nucleator can induce the crystallization of described polypropylene A and polypropylene B well, thus obtains the higher polypropylene granules of transparency.As can be seen from the contrast of embodiment 1 and embodiment 5, when described polypropylene A is the multipolymer of ethene and propylene, and when wherein the content of ethylene unit unit is 2-4 % by weight, the polypropylene granules obtained can be made to have higher transparency.
More than describe the preferred embodiment of the present invention in detail; but the present invention is not limited to the detail in above-mentioned embodiment, within the scope of technical conceive of the present invention; can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.
It should be noted that in addition, each the concrete technical characteristic described in above-mentioned embodiment, in reconcilable situation, can be combined by any suitable mode.In order to avoid unnecessary repetition, the present invention illustrates no longer separately to various possible array mode.
In addition, also can carry out arbitrary combination between various different embodiment of the present invention, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (10)
1. a polypropene composition, is characterized in that, this polypropene composition contains polypropylene A, polypropylene B, nucleator and oxidation inhibitor; Described polypropylene A is the multipolymer of alfon and/or ethene and propylene, described polypropylene B is the multipolymer of ethene and propylene, in described polypropylene B, the content of ethylene unit unit is than ethylene unit unit content height 8-15% in polypropylene A, and the fusing point of described polypropylene B under the temperature rise rate of 10 DEG C/min 90-95 DEG C lower than the fusing point of polypropylene A under the temperature rise rate of 10 DEG C/min.
2. polypropene composition according to claim 1, wherein, in described polypropylene A, the content of ethylene unit unit is 0-5 % by weight, and the fusing point of described polypropylene A under the temperature rise rate of 10 DEG C/min is 140-160 DEG C; In described polypropylene B, the content of ethylene unit unit is 8-16 % by weight, and the fusing point of described polypropylene B under the temperature rise rate of 10 DEG C/min is 50-65 DEG C.
3. polypropene composition according to claim 1, wherein, described polypropylene A is the multipolymer of ethene and propylene, and in described polypropylene A, the content of ethylene unit unit is 2-4 % by weight.
4. the polypropene composition according to claim 1,2 or 3, wherein, the density of described polypropylene A is 0.90-0.92g/cm
2, the melt mass flow rate at 230 DEG C, under the effect of 2.16kg counterweight is 20-30g/10min.
5. the polypropene composition according to claim 1,2 or 3, wherein, the density of described polypropylene B is 0.85-0.88g/cm
2, the melt mass flow rate at 230 DEG C, under the effect of 2.16kg counterweight is 15-20g/10min.
6. the polypropene composition according to claim 1,2 or 3, wherein, with the described polypropylene A of 100 weight parts for benchmark, the content of described polypropylene B is 2-20 weight part, the content of described nucleator is 0.1-0.5 weight part, and the content of described oxidation inhibitor is 0.01-0.5 weight part.
7. the polypropene composition according to claim 1,2 or 3, wherein, described nucleator is Mei Liken NX8000.
8. the polypropene composition according to claim 1,2 or 3, wherein, described oxidation inhibitor contains primary antioxidant and aid anti-oxidants, and described primary antioxidant is hindered phenol compound, and described aid anti-oxidants is phosphite ester compound; Preferably, described hindered phenol compound is [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester and/or 1,3,5-trimethylammonium-2,4,6-(3,5-di-t-butyl-4-hydroxyphenylmethyl) benzene, described phosphite ester compound is three (2,4-di-tert-butyl-phenyl) phosphorous acid ester.
9. the polypropene composition according to claim 1,2 or 3, wherein, described polypropene composition is also containing acid-acceptor, and with the described polypropylene A of 100 weight parts for benchmark, the content of described acid-acceptor is 0.01-0.1 weight part; Preferably, described acid-acceptor is stearate and/or aluminate hydrates magnesiumcarbonate, is particularly preferably calcium stearate.
10. a polypropylene granules, this polypropylene granules is by the polypropene composition heating and melting in claim 1-9 described in any one and extruding pelletization is formed.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104788824A (en) * | 2015-05-07 | 2015-07-22 | 天津科技大学 | Transparent modified polypropylene material and preparation method thereof |
| CN109942953A (en) * | 2019-02-12 | 2019-06-28 | 武汉博茗低碳产业股份有限公司 | A kind of thermal degradation polypropylene gradient phase-change heat-storage material and preparation method thereof |
| CN110669287A (en) * | 2019-10-15 | 2020-01-10 | 江苏沃特新材料科技有限公司 | Polypropylene material and preparation method thereof, structural member and manufacturing method thereof |
| CN112063057A (en) * | 2020-09-07 | 2020-12-11 | 上海金发科技发展有限公司 | Yellowing-resistant polypropylene composition for automobile expansion pot body and preparation method thereof |
| CN112409681A (en) * | 2019-08-23 | 2021-02-26 | 中国石油化工股份有限公司 | Polypropylene composition and preparation method thereof |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101111555A (en) * | 2004-12-17 | 2008-01-23 | 埃克森美孚化学专利公司 | Heterogeneous polymer blends and molded articles therefrom |
| CN101506297A (en) * | 2006-08-17 | 2009-08-12 | 北方科技有限公司 | Improved transparent polypropylene composition |
| CN102439086A (en) * | 2009-05-21 | 2012-05-02 | 巴塞尔聚烯烃意大利有限责任公司 | Propylene polymer compositions |
-
2013
- 2013-07-22 CN CN201310309018.5A patent/CN104327369B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101111555A (en) * | 2004-12-17 | 2008-01-23 | 埃克森美孚化学专利公司 | Heterogeneous polymer blends and molded articles therefrom |
| CN101506297A (en) * | 2006-08-17 | 2009-08-12 | 北方科技有限公司 | Improved transparent polypropylene composition |
| CN102439086A (en) * | 2009-05-21 | 2012-05-02 | 巴塞尔聚烯烃意大利有限责任公司 | Propylene polymer compositions |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104788824A (en) * | 2015-05-07 | 2015-07-22 | 天津科技大学 | Transparent modified polypropylene material and preparation method thereof |
| CN109942953A (en) * | 2019-02-12 | 2019-06-28 | 武汉博茗低碳产业股份有限公司 | A kind of thermal degradation polypropylene gradient phase-change heat-storage material and preparation method thereof |
| CN109942953B (en) * | 2019-02-12 | 2021-12-10 | 武汉博茗低碳产业股份有限公司 | Thermal degradation polypropylene gradient phase change heat storage material and preparation method thereof |
| CN112409681A (en) * | 2019-08-23 | 2021-02-26 | 中国石油化工股份有限公司 | Polypropylene composition and preparation method thereof |
| CN110669287A (en) * | 2019-10-15 | 2020-01-10 | 江苏沃特新材料科技有限公司 | Polypropylene material and preparation method thereof, structural member and manufacturing method thereof |
| CN110669287B (en) * | 2019-10-15 | 2022-04-29 | 江苏沃特新材料科技有限公司 | Polypropylene material and preparation method thereof, structural member and manufacturing method thereof |
| CN112063057A (en) * | 2020-09-07 | 2020-12-11 | 上海金发科技发展有限公司 | Yellowing-resistant polypropylene composition for automobile expansion pot body and preparation method thereof |
| CN113698521A (en) * | 2021-07-26 | 2021-11-26 | 中国石化中原石油化工有限责任公司 | Polypropylene copolymer, product and preparation method thereof |
| CN115991907A (en) * | 2021-10-20 | 2023-04-21 | 中国石油化工股份有限公司 | Low-haze high-impact heat-sealing polypropylene composite film and preparation method and application thereof |
| CN116041816A (en) * | 2021-10-28 | 2023-05-02 | 中国石油化工股份有限公司 | Polyethylene composition and preparation method thereof |
| CN116063788A (en) * | 2021-11-01 | 2023-05-05 | 中国石油化工股份有限公司 | Polypropylene composition, polypropylene material and power cable protection pipeline |
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