CN103571123B - A kind of bumper impact polypropylene composition and preparation method thereof - Google Patents
A kind of bumper impact polypropylene composition and preparation method thereof Download PDFInfo
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- CN103571123B CN103571123B CN201210258959.6A CN201210258959A CN103571123B CN 103571123 B CN103571123 B CN 103571123B CN 201210258959 A CN201210258959 A CN 201210258959A CN 103571123 B CN103571123 B CN 103571123B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/04—Particle-shaped
Abstract
The invention provides a kind of bumper impact polypropylene composition and preparation method thereof, comprise following component: block copolymerization polypropylene 100 parts, processing aid 0.15-0.3 part, nano combined nucleator 0.15-0.3 part, peroxide master batch 0.15-0.3 part; Bumper impact polypropylene composition of the present invention has higher toughness, higher rigidity, modulus in flexure >=1000 MPa; Under the prerequisite of higher melt flow speed, ensure that material has higher shock strength, modulus in flexure and resistance toheat, make it the feature with rigidity-toughness balanced, be applicable to the production of high-end bumper injection-molded item.
Description
Technical field
The invention belongs to field of new, be specifically related to a kind of bumper impact polypropylene composition and preparation method thereof, prepared impact polypropylene composition is mainly used in the production of high-end bumper anti-impact product, also can be widely used in all kinds of inner and outer decorative parts of automobile, furniture, electrical equipment plastic components etc. high to the requirement of acrylic resin rigidity-toughness balanced.
Background technology
The external PP Pipe Compound for shaping car collision bumper mainly contains following three kinds: a, polypropylene (PP) multipolymer/terpolymer EP rubber (EPDM) blend composition at present; B, propylene-ethylene block copolymer (EPM)/Thermoplastic Elastomer, Olefinic (POE) blend composition; C, rubber thing content up to 35% shock resistance type PP/EPM reactor blending material.Current domestic car bumper selects first two mostly.Although EPDM has good toughening effect to PP, EPDM price is high, and broken glue has certain difficulty, and mobility is also not ideal.In addition due to granulation process more than once in preparation process, therefore many one heating processes, cause molecular weight and molecular weight distribution to change, quality control is more difficult.In recent years, the large-scale polypropylene production company that almost world was all achieves obvious progress at the technical elements of reactor direct production impact copolymer.
The domestic demand to high-impact high-modulus copolymerization PP is larger, but manufacturer and output are all little.Less stable, easily sticky still in the production process of the mainly anti-impact PP of high rubber content, produce load and decline more.While acquisition is compared with high impact property, modulus in flexure and heat-drawn wire are often on the low side, because PP polymerization unit and technique limit, are difficult to reach production steady in a long-term.
Although a lot of work has been done in exploitation high-performance PP by domestic each petroleum chemical enterprise, but copolymerization PP resin, especially the high flowing copolymerized product trade mark or less, and the needs of automotive industry can't be met completely in performance, production quantity etc., at present domestic yet there are no by reactor polymerization direct production mode produce controllable rheology bumper crushing-resistant copolymerization PP material Patents report.
Summary of the invention
The invention provides a kind of bumper impact polypropylene composition, there is high melt flow rate (MFR), higher toughness and rigidity.
The present invention also provides the preparation method of described bumper impact polypropylene composition.
A kind of bumper impact polypropylene composition, comprises following component:
Block copolymerization polypropylene 100 parts;
Processing aid 0.15-0.3 part;
Nano combined nucleator 0.15-0.3 part;
Peroxide master batch 0.15-0.3 part;
The comonomer of described block copolymerization polypropylene is ethene, and ethylene content is 10-15wt%; Described processing aid is made up of 0.1-0.2 part oxidation inhibitor and 0.05-0.1 part halogen-absorber, oxidation inhibitor is by 0.05-0.1 part four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester and 0.05-0.1 part tricresyl phosphite (2.4-di-tert-butyl-phenyl) ester composition, described halogen-absorber is calcium stearate; Described nano combined nucleator is obtained on the carrier of nanoscale powder rubber by nucleator load, described nucleator is (3,4-dimethyl two benzal) composition of one or both arbitrary proportions in sorbyl alcohol, methylene-bis (2,4-di-tert-butyl-phenyl) phosphoric acid ester oxyaluminum salt or p-tert-butyl benzoic acid oxyaluminum; Described peroxide master batch is made up of homo-polypropylene 100 parts and superoxide 0.65-1 part, and wherein superoxide is dicumyl peroxide or 1,1-two (tert-butyl peroxide)-3,3,5-trimethyl-cyclohexane; Above number is weight part.
Described nano combined nucleator is prepared by following two kinds of methods and obtains:
(1) by the slurries of inorganic particulate, nucleator, cross-linking type synthetic rubber latex mixes, and obtains mixed emulsion, then by this mixed emulsion spraying dry, obtains described nano combined nucleator.
(2) when adding or do not add crosslinking coagent, after being adopted by rubber latex energetic ray source to carry out radiation vulcanization, again by the slurries of inorganic particulate, nucleator, rubber latex after irradiation mixes, obtain mixed emulsion, then by this mixed emulsion spraying dry, obtain described nano combined nucleator.
Above-mentioned inorganic particulate slurries are the suspension of inorganic particulate in water; Described inorganic particulate is selected from one of following material or it is with the combination of arbitrary proportion: gold and silver, copper, iron, au-alloy, silver alloys, copper alloy, iron alloy, aluminum oxide, magnesium oxide, titanium dioxide, ferric oxide, Z 250, silver suboxide, zinc oxide, aluminium nitride, silicon nitride, silicon carbide, silicon-dioxide, aluminium hydroxide, magnesium hydroxide, calcium carbonate, barium sulfate, calcium sulfate, silver chloride, asbestos, talcum, kaolin, mica, feldspar, wollastonite and polynite; Its particle has at least one dimension mean sizes to be 0.2-500nm; In described rubber latex contained rubber weight and inorganic particulate slurries in contained by the weight ratio of inorganic particulate be 99.5: 0.5-20: 80.
As mentioned above, in the present invention, namely the process preparing nano-rubber powder is prepare the process of nano combined nucleator, in the process preparing nano-rubber powder by nucleator load on nano-rubber powder, obtain nano combined nucleator.
The melt flow rate (MFR) of bumper impact polypropylene composition of the present invention is 20-25g/10min.
The preparation method of bumper impact polypropylene composition of the present invention is, by proportioning by block copolymerization polypropylene, processing aid and nano combined nucleator mix and obtain base-material; Superoxide and homo-polypropylene are mixed rear extruding pelletization and obtain peroxide master batch, then by base-material and peroxide master batch mixing, extruding pelletization, obtain described bumper impact polypropylene composition.
By base-material and peroxide master batch mixing, the concrete grammar of extruding pelletization is: by base-material and peroxide master batch mixing, the concrete grammar of extruding pelletization is: the major ingredient and the auxiliary material loading hopper that the base-material of gained and peroxide master batch are placed in respectively twin screw extruder, extruding pelletization, the reinforced rotating speed of setting major ingredient and auxiliary material is respectively 21-23rpm, each district temperature of twin screw extruder is set as: Z1:180-190 DEG C, Z2:200-210 DEG C, Z3:210-215 DEG C, Z4:220-225 DEG C, Z5:220-225 DEG C, Z6:215-220 DEG C, head: 200-210 DEG C, the speed setting of twin screw extruder is 300-310rpm.In extrusion, the side feeding add-on of dynamic adjustments peroxide master batch, can reach the object of controllable rheology.
Bumper impact polypropylene composition of the present invention keeping higher toughness, at normal temperature simple beam impact strength>=35KJ/m
2prerequisite under still there is certain rigidity, namely have higher toughness, higher rigidity, modulus in flexure>=1000 MPa; Under the prerequisite of higher melt flow speed, ensure that material has higher shock strength, modulus in flexure and resistance toheat, make it the feature with rigidity-toughness balanced, be applicable to the production of high-end bumper injection-molded item.
Bumper impact polypropylene composition performance index of the present invention are as shown in table 1:
Table 1 impact polypropylene composition performance index
Embodiment
Embodiment 1
Taking comonomer is ethene, ethylene content is the block copolymerization polypropylene 100 parts of 10wt%, four [β-(3, 5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester and tricresyl phosphate (2.4-di-tert-butyl-phenyl) ester get 0.15 part with the ratio of 1:1, high-purity calcium stearate 0.10 part, by nucleator methylene-bis (2, 4-di-tert-butyl-phenyl) load of phosphoric acid ester oxyaluminum salt makes nano combined nucleator 0.15 part on the carrier of nanoscale powder rubber, nanoscale powder rubber is prepared by the method comprising following steps and obtains: by the slurries of inorganic particulate, nucleator, cross-linking type synthetic rubber latex mixes, obtain mixed emulsion, again by this mixed emulsion spraying dry.Above-mentioned materials is placed in high-speed mixer stir, obtains base-material for subsequent use.Take homo-polypropylene 100 parts, dicumyl peroxide 0.65 part, is placed in high-speed mixer by above-mentioned materials and stirs, and is machined to peroxide master batch for subsequent use with twin-screw extrusion.The base-material of gained and peroxide master batch are placed in respectively major ingredient and the auxiliary material loading hopper of twin screw extruder, setting major ingredient and the reinforced rotating speed of auxiliary material are respectively 21,23rpm.Each district temperature of twin screw extruder is set as: Z1 190 DEG C, Z2 210 DEG C, Z3 215 DEG C, Z4 220 DEG C, Z5 220 DEG C, Z6 215 DEG C, head 210 DEG C.Speed setting is: 310rpm.The material finally extruded is air-dry pelletizing after water-cooled, obtains required high flowability impact-resistant polypropylene.
Embodiment 2
Taking comonomer is ethene, ethylene content is the block copolymerization polypropylene 100 parts of 13wt%, Hinered phenols antioxidant four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester and tricresyl phosphite (2.4-di-tert-butyl-phenyl) ester get 0.15 part with the ratio of 1:1, high-purity calcium stearate 0.10 part, by nucleator methylene-bis (2,4-di-tert-butyl-phenyl) load of phosphoric acid ester oxyaluminum salt makes nano combined nucleator 0.2 part on the carrier of nanoscale powder rubber, and nanoscale powder method for preparing rubber is with embodiment 1.Above-mentioned materials is placed in high-speed mixer stir, obtains base-material for subsequent use.Take homo-polypropylene 100 parts, dicumyl peroxide 0.65 part, is placed in high-speed mixer by above-mentioned materials and stirs, and is machined to peroxide master batch for subsequent use with twin-screw extrusion.The base-material of gained and peroxide master batch are placed in respectively major ingredient and the auxiliary material loading hopper of twin screw extruder, setting major ingredient and the reinforced rotating speed of auxiliary material are respectively 21,23rpm.Each district temperature of twin screw extruder is set as: Z1 190 DEG C, Z2 210 DEG C, Z3 215 DEG C, Z4 220 DEG C, Z5 220 DEG C, Z6 215 DEG C, head 210 DEG C.Speed setting is: 310rpm.The material finally extruded is air-dry pelletizing after water-cooled, obtains required high flowability impact-resistant polypropylene.
Embodiment 3
Taking comonomer is ethene, ethylene content is the block copolymerization polypropylene 100 parts of 12wt%, four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester and tricresyl phosphite (2.4-di-tert-butyl-phenyl) ester take 0.15 part with the ratio of 1:1, high-purity calcium stearate 0.10 part, by nucleator methylene-bis (2,4-di-tert-butyl-phenyl) load of phosphoric acid ester oxyaluminum salt makes nano combined nucleator 0.25 part on the carrier of nanoscale powder rubber, and nanoscale powder method for preparing rubber is with embodiment 1.Above-mentioned materials is placed in high-speed mixer stir, obtains base-material for subsequent use.Take homo-polypropylene 100 parts, two (tert-butyl peroxide)-3,3, the 5-trimethyl-cyclohexane 1 part of 1,1-, is placed in high-speed mixer by above-mentioned materials and stirs, be machined to peroxide master batch for subsequent use with twin-screw extrusion.The base-material of gained and peroxide master batch are placed in respectively major ingredient and the auxiliary material loading hopper of twin screw extruder, setting major ingredient and the reinforced rotating speed of auxiliary material are respectively 21,23rpm.Each district temperature of twin screw extruder is set as: Z1 190 DEG C, Z2 210 DEG C, Z3 215 DEG C, Z4 220 DEG C, Z5 220 DEG C, Z6 215 DEG C, head 210 DEG C.Speed setting is: 310rpm.The material finally extruded is air-dry pelletizing after water-cooled, obtains required high flowability impact-resistant polypropylene.
Embodiment 4
Taking comonomer is ethene, ethylene content is the block copolymerization polypropylene 100 parts of 14wt%, four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester and tricresyl phosphite (2.4-di-tert-butyl-phenyl) ester) ratio with 1: 1 takes 0.15 part, high-purity calcium stearate 0.10 part, by nucleator methylene-bis (2,4-di-tert-butyl-phenyl) load of phosphoric acid ester oxyaluminum salt makes nano combined nucleator 0.3 part on the carrier of nanoscale powder rubber, and nanoscale powder method for preparing rubber is with embodiment 1.Above-mentioned materials is placed in high-speed mixer stir, obtains base-material for subsequent use.Take homo-polypropylene 100 parts, two (tert-butyl peroxide)-3,3, the 5-trimethyl-cyclohexane 1 part of 1,1-, is placed in high-speed mixer by above-mentioned materials and stirs, be machined to peroxide master batch for subsequent use with twin-screw extrusion.The base-material of gained and peroxide master batch are placed in respectively major ingredient and the auxiliary material loading hopper of twin screw extruder, the reinforced rotating speed setting major ingredient and auxiliary material as being respectively 21,23rpm.Each district temperature of twin screw extruder is set as: Z1 190 DEG C, Z2 210 DEG C, Z3 215 DEG C, Z4 220 DEG C, Z5 220 DEG C, Z6 215 DEG C, head 210 DEG C.Speed setting is: 310rpm.The material finally extruded is air-dry pelletizing after water-cooled, obtains required high flowability impact-resistant polypropylene.
Embodiment 5
Taking comonomer is ethene, ethylene content is the block copolymerization polypropylene 100 parts of 15wt%, four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester and tricresyl phosphite (2.4-di-tert-butyl-phenyl) ester take 0.15 part with the ratio of 1: 1, high-purity calcium stearate 0.10 part, nano combined nucleator 0.15 part is made in the load of nucleator p-tert-butyl benzoic acid oxyaluminum on the carrier of nanoscale powder rubber, and nanoscale powder method for preparing rubber is with embodiment 1.Above-mentioned materials is placed in high-speed mixer stir, obtains base-material for subsequent use.Take homo-polypropylene 100 parts, dicumyl peroxide 0.65 part, is placed in high-speed mixer by above-mentioned materials and stirs, and is machined to peroxide master batch for subsequent use with twin-screw extrusion.The base-material of gained and peroxide master batch are placed in respectively major ingredient and the auxiliary material loading hopper of twin screw extruder, setting major ingredient and the reinforced rotating speed of auxiliary material are respectively 21,23rpm.Each district temperature of twin screw extruder is set as: Z1 190 DEG C, Z2 210 DEG C, Z3 215 DEG C, Z4 220 DEG C, Z5 220 DEG C, Z6 215 DEG C, head 210 DEG C.Speed setting is: 310rpm.The material finally extruded is air-dry pelletizing after water-cooled, obtains required high flowability impact-resistant polypropylene.
Embodiment 6
Taking comonomer is ethene, ethylene content is the block copolymerization polypropylene 100 parts of 13wt%, four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester and tricresyl phosphite (2.4-di-tert-butyl-phenyl) ester take 0.15 part with the ratio of 1: 1, high-purity calcium stearate 0.10 part, nano combined nucleator 0.2 part is made in the load of nucleator p-tert-butyl benzoic acid oxyaluminum on the carrier of nanoscale powder rubber, and nanoscale powder method for preparing rubber is with embodiment 1.Above-mentioned materials is placed in high-speed mixer stir, obtains base-material for subsequent use.Take homo-polypropylene 100 parts, dicumyl peroxide 0.65 part, is placed in high-speed mixer by above-mentioned materials and stirs, and is machined to peroxide master batch for subsequent use with twin-screw extrusion.The base-material of gained and peroxide master batch are placed in respectively major ingredient and the auxiliary material loading hopper of twin screw extruder, setting major ingredient and the reinforced rotating speed of auxiliary material are respectively 21,23rpm.Each district temperature of twin screw extruder is set as: Z1 190 DEG C, Z2 210 DEG C, Z3 215 DEG C, Z4 220 DEG C, 1Z5 220 DEG C, Z6 215 DEG C, head 210 DEG C.Speed setting is: 310rpm.The material finally extruded is air-dry pelletizing after water-cooled, obtains required high flowability impact-resistant polypropylene.
Embodiment 7
Taking comonomer is ethene, ethylene content is 12wt% block copolymerization polypropylene 100 parts, four [β-(3, 5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester and tricresyl phosphite (2.4-di-tert-butyl-phenyl) ester take 0.15 part with the ratio of 1: 1, high-purity calcium stearate 0.10 part, nano combined nucleator 0.25 part is made in the load of nucleator p-tert-butyl benzoic acid oxyaluminum on the carrier of nanoscale powder rubber, when adding crosslinking coagent, after being adopted by rubber latex energetic ray source to carry out radiation vulcanization, again by the slurries of inorganic particulate, nucleator, rubber latex after irradiation mixes, obtain mixed emulsion, again this mixed emulsion spraying dry is obtained described nano combined nucleator.Above-mentioned materials is placed in high-speed mixer stir, obtains base-material for subsequent use.Take homo-polypropylene 100 parts, two (tert-butyl peroxide)-3,3, the 5-trimethyl-cyclohexane 1 part of 1,1-, is placed in high-speed mixer by above-mentioned materials and stirs, be machined to peroxide master batch for subsequent use with twin-screw extrusion.The base-material of gained and peroxide master batch are placed in respectively major ingredient and the auxiliary material loading hopper of twin screw extruder, setting major ingredient and the reinforced rotating speed of auxiliary material are respectively 21,23rpm.Each district temperature of twin screw extruder is set as: Z1 190 DEG C, Z2 210 DEG C, Z3 215 DEG C, Z4 220 DEG C, Z5 220 DEG C, Z6 215 DEG C, head 210 DEG C.Speed setting is: 310rpm.The material finally extruded is air-dry pelletizing after water-cooled, obtains required high flowability impact-resistant polypropylene.
Embodiment 8
Taking comonomer is ethene, ethylene content is the block copolymerization polypropylene 100 parts of 14wt%, four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester and tricresyl phosphite (2.4-di-tert-butyl-phenyl) ester take 0.15 part with the ratio of 1: 1, high-purity calcium stearate 0.10 part, nano combined nucleator 0.3 part is made in the load of nucleator p-tert-butyl benzoic acid oxyaluminum on the carrier of nanoscale powder rubber, and nanoscale powder method for preparing rubber is with embodiment 7.Above-mentioned materials is placed in high-speed mixer stir, obtains base-material for subsequent use.Take homo-polypropylene 100 parts, two (tert-butyl peroxide)-3,3, the 5-trimethyl-cyclohexane 1 part of 1,1-, is placed in high-speed mixer by above-mentioned materials and stirs, be machined to peroxide master batch for subsequent use with twin-screw extrusion.The base-material of gained and peroxide master batch are placed in respectively major ingredient and the auxiliary material loading hopper of twin screw extruder, setting major ingredient and the reinforced rotating speed of auxiliary material are respectively 21,23rpm.Each district temperature of twin screw extruder is set as: Z1 190 DEG C, Z2 210 DEG C, Z3 215 DEG C, Z4 220 DEG C, Z5 220 DEG C, Z6 215 DEG C, head 210 DEG C.Speed setting is: 310rpm.The material finally extruded is air-dry pelletizing after water-cooled, obtains required high flowability impact-resistant polypropylene.
Embodiment 9
Taking comonomer is ethene, ethylene content is the block copolymerization polypropylene 100 parts of 13wt%, four [β-(3, 5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester and tricresyl phosphite (2.4-di-tert-butyl-phenyl) ester take 0.15 part in the ratio of 1: 1, high-purity calcium stearate 0.10 part, by nucleator methylene-bis (2, 4-di-tert-butyl-phenyl) phosphoric acid ester oxyaluminum salt 0.15 part and the 0.05 part of load of p-tert-butyl benzoic acid oxyaluminum make nano combined nucleator on the carrier of nanoscale powder rubber, nanoscale powder method for preparing rubber is with embodiment 7.Above-mentioned materials is placed in high-speed mixer stir, obtains base-material for subsequent use.Take homo-polypropylene 100 parts, dicumyl peroxide 0.65 part, is placed in high-speed mixer by above-mentioned materials and stirs, and is machined to peroxide master batch for subsequent use with twin-screw extrusion.The base-material of gained and peroxide master batch are placed in respectively major ingredient and the auxiliary material loading hopper of twin screw extruder, setting major ingredient and the reinforced rotating speed of auxiliary material are respectively 21,23rpm.Each district temperature of twin screw extruder is set as: Z1 190 DEG C, Z2 210 DEG C, Z3 215 DEG C, Z4 220 DEG C, Z5 220 DEG C, Z6 215 DEG C, head 210 DEG C.Speed setting is: 310rpm.The material finally extruded is air-dry pelletizing after water-cooled, obtains required high flowability impact-resistant polypropylene.
Embodiment 10
Taking comonomer is ethene, ethylene content is the block copolymerization polypropylene 100 parts of 12wt%, four [β-(3, 5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester and tricresyl phosphite (2.4-di-tert-butyl-phenyl) ester take 0.15 part with the ratio of 1: 1, high-purity calcium stearate 0.10 part, by nucleator methylene-bis (2, 4-di-tert-butyl-phenyl) phosphoric acid ester oxyaluminum salt 0.15 part and the 0.1 part of load of p-tert-butyl benzoic acid oxyaluminum make nano combined nucleator on the carrier of nanoscale powder rubber, nanoscale powder method for preparing rubber is with embodiment 7.Above-mentioned materials is placed in high-speed mixer stir, obtains base-material for subsequent use.Take homo-polypropylene 100 parts, dicumyl peroxide 0.65 part, is placed in high-speed mixer by above-mentioned materials and stirs, and is machined to peroxide master batch for subsequent use with twin-screw extrusion.The base-material of gained and peroxide master batch are placed in respectively major ingredient and the auxiliary material loading hopper of twin screw extruder, setting major ingredient and the reinforced rotating speed of auxiliary material are respectively 21,23rpm.Each district temperature of twin screw extruder is set as: Z1 190 DEG C, Z2 210 DEG C, Z3 215 DEG C, Z4 220 DEG C, Z5 220 DEG C, Z6 215 DEG C, head 210 DEG C.Speed setting is: 310rpm.The material finally extruded is air-dry pelletizing after water-cooled, obtains required high flowability impact-resistant polypropylene.
Embodiment 11
Taking comonomer is ethene, ethylene content is the block copolymerization polypropylene 100 parts of 11wt%, Hinered phenols antioxidant (four [β-(3, 5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester and tricresyl phosphite (2.4-di-tert-butyl-phenyl) ester take 0.15 part with the ratio of 1: 1, high-purity calcium stearate 0.10 part, by nucleator methylene-bis (2, 4-di-tert-butyl-phenyl) phosphoric acid ester oxyaluminum salt 0.15 part and the 0.15 part of load of p-tert-butyl benzoic acid oxyaluminum make nano combined nucleator on the carrier of nanoscale powder rubber, nanoscale powder method for preparing rubber is with embodiment 7.Above-mentioned materials is placed in high-speed mixer stir, obtains base-material for subsequent use.Take homo-polypropylene 100 parts, two (tert-butyl peroxide)-3,3, the 5-trimethyl-cyclohexane 1 part of 1,1-, is placed in high-speed mixer by above-mentioned materials and stirs, be machined to peroxide master batch for subsequent use with twin-screw extrusion.The base-material of gained and peroxide master batch are placed in respectively major ingredient and the auxiliary material loading hopper of twin screw extruder, setting major ingredient and the reinforced rotating speed of auxiliary material are respectively 21,23rpm.Each district temperature of twin screw extruder is set as: Z1 190 DEG C, Z2 210 DEG C, Z3 215 DEG C, Z4 220 DEG C, Z5 220 DEG C, Z6 215 DEG C, head 210 DEG C.Speed setting is: 310rpm.The material finally extruded is air-dry pelletizing after water-cooled, obtains required high flowability impact-resistant polypropylene.
Specific embodiment performance is in table 2,3.
The performance of composition prepared by table 2 embodiment
The performance of composition prepared by table 3 embodiment
Claims (3)
1. a bumper impact polypropylene composition, is characterized in that, comprises following component:
The comonomer of described block copolymerization polypropylene is ethene, and ethylene content is 10-15wt%;
Described processing aid is made up of 0.1-0.2 part oxidation inhibitor and 0.05-0.1 part halogen-absorber, oxidation inhibitor is by 0.05-0.1 part four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester and 0.05-0.1 part tricresyl phosphite (2.4-di-tert-butyl-phenyl) ester composition, described halogen-absorber is calcium stearate;
Described peroxide master batch is made up of homo-polypropylene 100 parts and superoxide 0.65-1 part, and wherein superoxide is dicumyl peroxide or 1,1-two (tert-butyl peroxide)-3,3,5-trimethyl-cyclohexane; Above number is weight part;
Described nano combined nucleator is obtained on the carrier of nanoscale powder rubber by nucleator load, described nucleator is (3,4-dimethyl two benzal) composition of one or both arbitrary proportions in sorbyl alcohol, methylene-bis (2,4-di-tert-butyl-phenyl) phosphoric acid ester oxyaluminum salt or p-tert-butyl benzoic acid oxyaluminum;
Described nano combined nucleator is obtained by any one preparation in following two kinds of methods:
Method A: by the slurries of inorganic particulate, nucleator, cross-linking type synthetic rubber latex mixes, and obtains mixed emulsion, then by this mixed emulsion spraying dry, obtains described nano combined nucleator;
Method B: when adding or do not add crosslinking coagent, after being adopted by rubber latex energetic ray source to carry out radiation vulcanization, again by the slurries of inorganic particulate, nucleator, rubber latex after irradiation mixes, obtain mixed emulsion, then by this mixed emulsion spraying dry, obtain described nano combined nucleator;
Above-mentioned inorganic particulate slurries are the suspension of inorganic particulate in water; Described inorganic particulate is selected from one of following material or it is with the combination of arbitrary proportion: gold and silver, copper, iron, au-alloy, silver alloys, copper alloy, iron alloy, aluminum oxide, magnesium oxide, titanium dioxide, ferric oxide, Z 250, silver suboxide, zinc oxide, aluminium nitride, silicon nitride, silicon carbide, silicon-dioxide, aluminium hydroxide, magnesium hydroxide, calcium carbonate, barium sulfate, calcium sulfate, silver chloride, asbestos, talcum, kaolin, mica, feldspar, wollastonite and polynite; Its particle has at least one dimension mean sizes to be 0.2-500nm; In described rubber latex contained rubber weight and inorganic particulate slurries in contained by the weight ratio of inorganic particulate be 99.5: 0.5-20: 80.
2. the preparation method of bumper impact polypropylene composition according to claim 1, is characterized in that, in proportion by block copolymerization polypropylene, processing aid and nano combined nucleator mix and obtain base-material; Superoxide and homo-polypropylene are mixed rear extruding pelletization and obtain peroxide master batch, then by base-material and peroxide master batch mixing, extruding pelletization, obtain described bumper impact polypropylene composition.
3. the preparation method of bumper impact polypropylene composition according to claim 2, it is characterized in that, by base-material and peroxide master batch mixing, the concrete grammar of extruding pelletization is: the major ingredient and the auxiliary material loading hopper that the base-material of gained and peroxide master batch are placed in respectively twin screw extruder, extruding pelletization, the reinforced rotating speed of setting major ingredient and auxiliary material is respectively 21-23rpm, each district temperature of twin screw extruder is set as: Z1:180-190 DEG C, Z2:200-210 DEG C, Z3:210-215 DEG C, Z4:220-225 DEG C, Z5:220-225 DEG C, Z6:215-220 DEG C, head: 200-210 DEG C, the speed setting of twin screw extruder is 300-310rpm.
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| CN201210258959.6A CN103571123B (en) | 2012-07-20 | 2012-07-20 | A kind of bumper impact polypropylene composition and preparation method thereof |
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| CN103571123B true CN103571123B (en) | 2015-10-07 |
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| CN104974420A (en) * | 2015-06-23 | 2015-10-14 | 苏州博利迈新材料科技有限公司 | High impact resistant automobile bumper composite material and preparation method therefor |
| CN109233087A (en) * | 2018-06-20 | 2019-01-18 | 安徽瑞鑫自动化仪表有限公司 | A kind of preparation method of impact resistance electric submersible pump polypropylene cable Insulation Material |
| CN112745580B (en) * | 2019-10-30 | 2022-09-09 | 中国石油化工股份有限公司 | High-fluidity, high-impact-resistance and high-temperature-resistance polypropylene material as well as preparation method and application thereof |
| CN113845698B (en) * | 2021-04-27 | 2022-09-23 | 朴蓝聚烯烃科技发展（上海）有限公司 | Polymer composite nucleating agent and polymer composition |
| CN115710381A (en) * | 2022-11-01 | 2023-02-24 | 呈和科技股份有限公司 | Polypropylene composite additive and application thereof |
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| CN102079841A (en) * | 2009-11-27 | 2011-06-01 | 中国石油化工股份有限公司 | High-flowability impact-resistant polypropylene composite and preparation method thereof |
| CN102391584A (en) * | 2011-10-12 | 2012-03-28 | 中国石油化工股份有限公司 | High-fluidity high-toughness polypropylene resin and preparation method thereof |
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| CN102391584A (en) * | 2011-10-12 | 2012-03-28 | 中国石油化工股份有限公司 | High-fluidity high-toughness polypropylene resin and preparation method thereof |
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