CN103571123A - Antishock polypropylene composition used for automobile bumper and preparation method of the composition - Google Patents
Antishock polypropylene composition used for automobile bumper and preparation method of the composition Download PDFInfo
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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
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Abstract
The invention provides an antishock polypropylene composition used for an automobile bumper and a preparation method of the composition. The composition comprises following components: 100 parts of blocked co-polypropylene, 0.15-0.3 part of an auxiliary agent, 0.15-0.3 part of a nano composite nucleating agent, and 0.15-0.3 part of a peroxide master batch. The composition has high toughness, high rigidity and a flexural modulus not less than 1000 MPa. Under a precondition of a high melt flow rate, the material is guaranteed to have high impact strength, flexural modulus and heat resistance, and to have a characteristic that the rigidity and the toughness are balanced. The composition is suitable for production of high-end automobile bumper injection molding products.
Description
Technical field
The invention belongs to field of new, be specifically related to impact polypropylene composition and preparation method thereof for a kind of bumper, prepared impact polypropylene composition is mainly used in the production of high-end bumper anti-impact product, also can be widely used in the high all kinds of inner and outer decorative parts of automobile of acrylic resin rigidity-toughness balanced requirement, furniture, electrical equipment plastic components etc.
Background technology
The external PP Pipe Compound for moulding car collision bumper mainly contains following three kinds at present: a, polypropylene (PP) multipolymer/terpolymer EP rubber (EPDM) blend composition; B, propylene-ethylene block copolymer (EPM)/Thermoplastic Elastomer, Olefinic (POE) blend composition; C, rubber thing content are up to 35% shock resistance type PP/EPM reactor blending material.Current domestic car bumper is selected 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 more than once granulation process in preparation process, therefore many one heating processes, cause molecular weight and molecular weight distribution to change, and quality control is more difficult.In recent years, almost all large-scale polypropylene production companies in the world had all obtained 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 seldom.Be mainly less stable in the production process of anti-impact PP of high rubber content, easily sticky still, produce load and decline more.When obtaining compared with high impact property, modulus in flexure and heat-drawn wire are often on the low side, due to PP polymerization unit and technique, limit, and are difficult to the production that reaches steady in a long-term.
Although a lot of work is being done aspect exploitation high-performance PP by domestic each petroleum chemical enterprise, but copolymerization PP resin, especially the high mobile copolymerized product trade mark or less, and at aspects such as performance, production quantities, can't meet the needs of automotive industry completely, at present domestic yet there are no produced controllable rheology bumper by the mode of reactor polymerization direct production and reported with the Patents of crushing-resistant copolymerization PP material.
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 with impact polypropylene composition.
An impact polypropylene composition, comprises following component:
100 parts of block copolymerization polypropylenes;
Processing aid 0.15-0.3 part;
Nano combined nucleator 0.15-0.3 part;
Superoxide masterbatch 0.15-0.3 part;
The comonomer of described block copolymerization polypropylene is ethene, and ethylene content is 10-15wt%; Described processing aid is comprised 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 loaded on by nucleator on the carrier of nanoscale powder rubber and obtains, described nucleator is (3,4-dimethyl two benzals) 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 superoxide masterbatch is comprised of 100 parts of homo-polypropylene and superoxide 0.65-1 part, and wherein superoxide is two (tert-butyl peroxide)-3,3 of dicumyl peroxide or 1,1-, 5-trimethyl-cyclohexane; Above umber is weight part.
Described nano combined nucleator is obtained by following two kinds of methods preparation:
(1) by the slurries of inorganic particulate, nucleator, cross-linking type synthetic rubber latex mixes, and obtains mixed emulsion, then this mixed emulsion spraying is dry, obtains described nano combined nucleator.
(2) in the situation that adding or do not add crosslinking coagent, adopt energetic ray source to carry out after radiation vulcanization rubber latex, again by the slurries of inorganic particulate, nucleator, rubber latex after irradiation mixes, obtain mixed emulsion, then this mixed emulsion spraying is 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 its combination with 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; It is 0.2-500nm that its particle has one dimension mean sizes at least; In described rubber latex, in the weight of contained rubber and inorganic particulate slurries, the weight ratio of contained inorganic particulate is 99.5: 0.5-20: 80.
As mentioned above, in the present invention, the process of preparing nano-rubber powder is the process of the nano combined nucleator of preparation, in the process of preparing nano-rubber powder, nucleator is loaded on nano-rubber powder, has obtained nano combined nucleator.
Bumper of the present invention is 20-25g/10min by the melt flow rate (MFR) of impact polypropylene composition.
Bumper of the present invention is that by block copolymerization polypropylene, processing aid and nano combined nucleator mix and obtain base-material by proportioning by the preparation method of impact polypropylene composition; Superoxide and homo-polypropylene are mixed to rear extruding pelletization and obtain superoxide masterbatch, then base-material and superoxide masterbatch are mixed, extruding pelletization, obtain described bumper impact polypropylene composition.
Base-material and superoxide masterbatch are mixed, the concrete grammar of extruding pelletization is: base-material and superoxide masterbatch are mixed, the concrete grammar of extruding pelletization is: the major ingredient and the auxiliary material loading hopper that the base-material of gained and superoxide masterbatch are placed in respectively to twin screw extruder, extruding pelletization, the reinforced rotating speed of setting major ingredient and auxiliary material is respectively 21-23rpm, by twin screw extruder Ge district Temperature Setting, be: Z1:180-190 ℃, Z2:200-210 ℃, Z3:210-215 ℃, Z4:220-225 ℃, Z5:220-225 ℃, Z6:215-220 ℃, head: 200-210 ℃, the speed setting of twin screw extruder is 300-310rpm.The side feeding add-on of dynamic adjustments superoxide masterbatch in extrusion, can reach the object of controllable rheology.
Bumper of the present invention uses impact polypropylene composition keeping higher toughness, at normal temperature simple beam impact strength>=35KJ/m
2prerequisite under still there is certain rigidity, have higher toughness, higher rigidity, modulus in flexure>=1000 MPa; Under the prerequisite of higher melt flow speed, guarantee that material has higher shock strength, modulus in flexure and resistance toheat, make it to have the feature of rigidity-toughness balanced, be applicable to the production of high-end bumper injection-molded item.
Bumper of the present invention is as shown in table 1 by impact polypropylene composition performance index:
Table 1 impact polypropylene composition performance index
Embodiment
Embodiment 1
Taking comonomer is ethene, ethylene content is 100 parts of the block copolymerization polypropylenes 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, 0.10 part of high purity calcium stearate, by nucleator methylene-bis (2, 4-di-tert-butyl-phenyl) phosphoric acid ester oxyaluminum salt loads on the carrier of nanoscale powder rubber and makes 0.15 part of nano combined nucleator, nanoscale powder rubber is obtained by the method preparation that comprises following steps: by the slurries of inorganic particulate, nucleator, cross-linking type synthetic rubber latex mixes, obtain mixed emulsion, again that this mixed emulsion spraying is dry.Above-mentioned materials is placed in to high-speed mixer and stirs, obtain base-material standby.Take 100 parts of homo-polypropylene, 0.65 part of dicumyl peroxide, is placed in high-speed mixer by above-mentioned materials and stirs, and is machined to superoxide masterbatch standby with twin-screw extrusion.The base-material of gained and superoxide masterbatch are placed in respectively to major ingredient and the auxiliary material loading hopper of twin screw extruder, the reinforced rotating speed of setting major ingredient and auxiliary material is respectively 21,23rpm.By twin screw extruder Ge district Temperature Setting, be: 190 ℃ of Z1,210 ℃ of Z2,215 ℃ of Z3,220 ℃ of Z4,220 ℃ of Z5,215 ℃ of Z6,210 ℃ of heads.Speed setting is: 310rpm.The material of finally extruding is air-dry pelletizing after water-cooled, obtains required high flowability impact-resistant polypropylene.
Embodiment 2
Taking comonomer is ethene, ethylene content is 100 parts of the block copolymerization polypropylenes 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 1:1,0.10 part of high purity calcium stearate, by nucleator methylene-bis (2,4-di-tert-butyl-phenyl) phosphoric acid ester oxyaluminum salt loads on the carrier of nanoscale powder rubber and makes 0.2 part of nano combined nucleator, and nanoscale powder method for preparing rubber is with embodiment 1.Above-mentioned materials is placed in to high-speed mixer and stirs, obtain base-material standby.Take 100 parts of homo-polypropylene, 0.65 part of dicumyl peroxide, is placed in high-speed mixer by above-mentioned materials and stirs, and is machined to superoxide masterbatch standby with twin-screw extrusion.The base-material of gained and superoxide masterbatch are placed in respectively to major ingredient and the auxiliary material loading hopper of twin screw extruder, the reinforced rotating speed of setting major ingredient and auxiliary material is respectively 21,23rpm.By twin screw extruder Ge district Temperature Setting, be: 190 ℃ of Z1,210 ℃ of Z2,215 ℃ of Z3,220 ℃ of Z4,220 ℃ of Z5,215 ℃ of Z6,210 ℃ of heads.Speed setting is: 310rpm.The material of finally extruding is air-dry pelletizing after water-cooled, obtains required high flowability impact-resistant polypropylene.
Embodiment 3
Taking comonomer is ethene, ethylene content is 100 parts of the block copolymerization polypropylenes 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 1:1,0.10 part of high purity calcium stearate, by nucleator methylene-bis (2,4-di-tert-butyl-phenyl) phosphoric acid ester oxyaluminum salt loads on the carrier of nanoscale powder rubber and makes 0.25 part of nano combined nucleator, and nanoscale powder method for preparing rubber is with embodiment 1.Above-mentioned materials is placed in to high-speed mixer and stirs, obtain base-material standby.Take 100 parts of homo-polypropylene, two (tert-butyl peroxide)-3,3 of 1,1-, 1 part of 5-trimethyl-cyclohexane, is placed in high-speed mixer by above-mentioned materials and stirs, and is machined to superoxide masterbatch standby with twin-screw extrusion.The base-material of gained and superoxide masterbatch are placed in respectively to major ingredient and the auxiliary material loading hopper of twin screw extruder, the reinforced rotating speed of setting major ingredient and auxiliary material is respectively 21,23rpm.By twin screw extruder Ge district Temperature Setting, be: 190 ℃ of Z1,210 ℃ of Z2,215 ℃ of Z3,220 ℃ of Z4,220 ℃ of Z5,215 ℃ of Z6,210 ℃ of heads.Speed setting is: 310rpm.The material of finally extruding is air-dry pelletizing after water-cooled, obtains required high flowability impact-resistant polypropylene.
Embodiment 4
Taking comonomer is ethene, ethylene content is 100 parts of the block copolymerization polypropylenes 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) with the ratio of 1: 1, take 0.15 part, 0.10 part of high purity calcium stearate, by nucleator methylene-bis (2,4-di-tert-butyl-phenyl) phosphoric acid ester oxyaluminum salt loads on the carrier of nanoscale powder rubber and makes 0.3 part of nano combined nucleator, and nanoscale powder method for preparing rubber is with embodiment 1.Above-mentioned materials is placed in to high-speed mixer and stirs, obtain base-material standby.Take 100 parts of homo-polypropylene, two (tert-butyl peroxide)-3,3 of 1,1-, 1 part of 5-trimethyl-cyclohexane, is placed in high-speed mixer by above-mentioned materials and stirs, and is machined to superoxide masterbatch standby with twin-screw extrusion.The base-material of gained and superoxide masterbatch are placed in respectively to major ingredient and the auxiliary material loading hopper of twin screw extruder, the reinforced rotating speed of setting major ingredient and auxiliary material for being respectively 21,23rpm.By twin screw extruder Ge district Temperature Setting, be: 190 ℃ of Z1,210 ℃ of Z2,215 ℃ of Z3,220 ℃ of Z4,220 ℃ of Z5,215 ℃ of Z6,210 ℃ of heads.Speed setting is: 310rpm.The material of finally extruding is air-dry pelletizing after water-cooled, obtains required high flowability impact-resistant polypropylene.
Embodiment 5
Taking comonomer is ethene, ethylene content is 100 parts of the block copolymerization polypropylenes 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: 1,0.10 part of high purity calcium stearate, nucleator p-tert-butyl benzoic acid oxyaluminum is loaded on the carrier of nanoscale powder rubber and make 0.15 part of nano combined nucleator, nanoscale powder method for preparing rubber is with embodiment 1.Above-mentioned materials is placed in to high-speed mixer and stirs, obtain base-material standby.Take 100 parts of homo-polypropylene, 0.65 part of dicumyl peroxide, is placed in high-speed mixer by above-mentioned materials and stirs, and is machined to superoxide masterbatch standby with twin-screw extrusion.The base-material of gained and superoxide masterbatch are placed in respectively to major ingredient and the auxiliary material loading hopper of twin screw extruder, the reinforced rotating speed of setting major ingredient and auxiliary material is respectively 21,23rpm.By twin screw extruder Ge district Temperature Setting, be: 190 ℃ of Z1,210 ℃ of Z2,215 ℃ of Z3,220 ℃ of Z4,220 ℃ of Z5,215 ℃ of Z6,210 ℃ of heads.Speed setting is: 310rpm.The material of finally extruding is air-dry pelletizing after water-cooled, obtains required high flowability impact-resistant polypropylene.
Embodiment 6
Taking comonomer is ethene, ethylene content is 100 parts of the block copolymerization polypropylenes 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: 1,0.10 part of high purity calcium stearate, nucleator p-tert-butyl benzoic acid oxyaluminum is loaded on the carrier of nanoscale powder rubber and make 0.2 part of nano combined nucleator, nanoscale powder method for preparing rubber is with embodiment 1.Above-mentioned materials is placed in to high-speed mixer and stirs, obtain base-material standby.Take 100 parts of homo-polypropylene, 0.65 part of dicumyl peroxide, is placed in high-speed mixer by above-mentioned materials and stirs, and is machined to superoxide masterbatch standby with twin-screw extrusion.The base-material of gained and superoxide masterbatch are placed in respectively to major ingredient and the auxiliary material loading hopper of twin screw extruder, the reinforced rotating speed of setting major ingredient and auxiliary material is respectively 21,23rpm.By twin screw extruder Ge district Temperature Setting, be: 190 ℃ of Z1,210 ℃ of Z2,215 ℃ of Z3,220 ℃ of Z4,220 ℃ of 1Z5,215 ℃ of Z6,210 ℃ of heads.Speed setting is: 310rpm.The material of finally extruding is air-dry pelletizing after water-cooled, obtains required high flowability impact-resistant polypropylene.
Embodiment 7
Taking comonomer is ethene, ethylene content is 100 parts of 12wt% block copolymerization polypropylenes, 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, 0.10 part of high purity calcium stearate, nucleator p-tert-butyl benzoic acid oxyaluminum is loaded on the carrier of nanoscale powder rubber and make 0.25 part of nano combined nucleator, in the situation that adding crosslinking coagent, adopt energetic ray source to carry out after radiation vulcanization rubber latex, again by the slurries of inorganic particulate, nucleator, rubber latex after irradiation mixes, obtain mixed emulsion, again this mixed emulsion spraying is dried and obtains described nano combined nucleator.Above-mentioned materials is placed in to high-speed mixer and stirs, obtain base-material standby.Take 100 parts of homo-polypropylene, two (tert-butyl peroxide)-3,3 of 1,1-, 1 part of 5-trimethyl-cyclohexane, is placed in high-speed mixer by above-mentioned materials and stirs, and is machined to superoxide masterbatch standby with twin-screw extrusion.The base-material of gained and superoxide masterbatch are placed in respectively to major ingredient and the auxiliary material loading hopper of twin screw extruder, the reinforced rotating speed of setting major ingredient and auxiliary material is respectively 21,23rpm.By twin screw extruder Ge district Temperature Setting, be: 190 ℃ of Z1,210 ℃ of Z2,215 ℃ of Z3,220 ℃ of Z4,220 ℃ of Z5,215 ℃ of Z6,210 ℃ of heads.Speed setting is: 310rpm.The material of finally extruding is air-dry pelletizing after water-cooled, obtains required high flowability impact-resistant polypropylene.
Embodiment 8
Taking comonomer is ethene, ethylene content is 100 parts of the block copolymerization polypropylenes 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: 1,0.10 part of high purity calcium stearate, nucleator p-tert-butyl benzoic acid oxyaluminum is loaded on the carrier of nanoscale powder rubber and make 0.3 part of nano combined nucleator, nanoscale powder method for preparing rubber is with embodiment 7.Above-mentioned materials is placed in to high-speed mixer and stirs, obtain base-material standby.Take 100 parts of homo-polypropylene, two (tert-butyl peroxide)-3,3 of 1,1-, 1 part of 5-trimethyl-cyclohexane, is placed in high-speed mixer by above-mentioned materials and stirs, and is machined to superoxide masterbatch standby with twin-screw extrusion.The base-material of gained and superoxide masterbatch are placed in respectively to major ingredient and the auxiliary material loading hopper of twin screw extruder, the reinforced rotating speed of setting major ingredient and auxiliary material is respectively 21,23rpm.By twin screw extruder Ge district Temperature Setting, be: 190 ℃ of Z1,210 ℃ of Z2,215 ℃ of Z3,220 ℃ of Z4,220 ℃ of Z5,215 ℃ of Z6,210 ℃ of heads.Speed setting is: 310rpm.The material of finally extruding is air-dry pelletizing after water-cooled, obtains required high flowability impact-resistant polypropylene.
Embodiment 9
Taking comonomer is ethene, ethylene content is 100 parts of the block copolymerization polypropylenes 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: 1,0.10 part of high purity calcium stearate, by nucleator methylene-bis (2,4-di-tert-butyl-phenyl) 0.05 part of 0.15 part of phosphoric acid ester oxyaluminum salt and p-tert-butyl benzoic acid oxyaluminum load on the carrier of nanoscale powder rubber and make nano combined nucleator, and nanoscale powder method for preparing rubber is with embodiment 7.Above-mentioned materials is placed in to high-speed mixer and stirs, obtain base-material standby.Take 100 parts of homo-polypropylene, 0.65 part of dicumyl peroxide, is placed in high-speed mixer by above-mentioned materials and stirs, and is machined to superoxide masterbatch standby with twin-screw extrusion.The base-material of gained and superoxide masterbatch are placed in respectively to major ingredient and the auxiliary material loading hopper of twin screw extruder, the reinforced rotating speed of setting major ingredient and auxiliary material is respectively 21,23rpm.By twin screw extruder Ge district Temperature Setting, be: 190 ℃ of Z1,210 ℃ of Z2,215 ℃ of Z3,220 ℃ of Z4,220 ℃ of Z5,215 ℃ of Z6,210 ℃ of heads.Speed setting is: 310rpm.The material of finally extruding is air-dry pelletizing after water-cooled, obtains required high flowability impact-resistant polypropylene.
Embodiment 10
Taking comonomer is ethene, ethylene content is 100 parts of the block copolymerization polypropylenes 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: 1,0.10 part of high purity calcium stearate, by nucleator methylene-bis (2,4-di-tert-butyl-phenyl) 0.1 part of 0.15 part of phosphoric acid ester oxyaluminum salt and p-tert-butyl benzoic acid oxyaluminum load on the carrier of nanoscale powder rubber and make nano combined nucleator, and nanoscale powder method for preparing rubber is with embodiment 7.Above-mentioned materials is placed in to high-speed mixer and stirs, obtain base-material standby.Take 100 parts of homo-polypropylene, 0.65 part of dicumyl peroxide, is placed in high-speed mixer by above-mentioned materials and stirs, and is machined to superoxide masterbatch standby with twin-screw extrusion.The base-material of gained and superoxide masterbatch are placed in respectively to major ingredient and the auxiliary material loading hopper of twin screw extruder, the reinforced rotating speed of setting major ingredient and auxiliary material is respectively 21,23rpm.By twin screw extruder Ge district Temperature Setting, be: 190 ℃ of Z1,210 ℃ of Z2,215 ℃ of Z3,220 ℃ of Z4,220 ℃ of Z5,215 ℃ of Z6,210 ℃ of heads.Speed setting is: 310rpm.The material of finally extruding is air-dry pelletizing after water-cooled, obtains required high flowability impact-resistant polypropylene.
Embodiment 11
Taking comonomer is ethene, ethylene content is 100 parts of the block copolymerization polypropylenes 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, 0.10 part of high purity calcium stearate, by nucleator methylene-bis (2, 4-di-tert-butyl-phenyl) 0.15 part of 0.15 part of phosphoric acid ester oxyaluminum salt and p-tert-butyl benzoic acid oxyaluminum load on the carrier of nanoscale powder rubber and make nano combined nucleator, nanoscale powder method for preparing rubber is with embodiment 7.Above-mentioned materials is placed in to high-speed mixer and stirs, obtain base-material standby.Take 100 parts of homo-polypropylene, two (tert-butyl peroxide)-3,3 of 1,1-, 1 part of 5-trimethyl-cyclohexane, is placed in high-speed mixer by above-mentioned materials and stirs, and is machined to superoxide masterbatch standby with twin-screw extrusion.The base-material of gained and superoxide masterbatch are placed in respectively to major ingredient and the auxiliary material loading hopper of twin screw extruder, the reinforced rotating speed of setting major ingredient and auxiliary material is respectively 21,23rpm.By twin screw extruder Ge district Temperature Setting, be: 190 ℃ of Z1,210 ℃ of Z2,215 ℃ of Z3,220 ℃ of Z4,220 ℃ of Z5,215 ℃ of Z6,210 ℃ of heads.Speed setting is: 310rpm.The material of finally extruding 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 (5)
1. a bumper impact polypropylene composition, is characterized in that, comprises following component:
100 parts of block copolymerization polypropylenes,
Processing aid 0.15-0.3 part,
Nano combined nucleator 0.15-0.3 part,
Superoxide masterbatch 0.15-0.3 part;
The comonomer of described block copolymerization polypropylene is ethene, and ethylene content is 10-15wt%; Described processing aid is comprised 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 loaded on by nucleator on the carrier of nanoscale powder rubber and obtains, described nucleator is (3,4-dimethyl two benzals) 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 superoxide masterbatch is comprised of 100 parts of homo-polypropylene and superoxide 0.65-1 part, and wherein superoxide is two (tert-butyl peroxide)-3,3 of dicumyl peroxide or 1,1-, 5-trimethyl-cyclohexane; Above umber is weight part.
2. bumper impact polypropylene composition according to claim 1, is characterized in that the preparation method of described nano combined nucleator comprises the steps:
By the slurries of inorganic particulate, nucleator, cross-linking type synthetic rubber latex mixes, and obtains mixed emulsion, then this mixed emulsion spraying is dry, obtains 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 its combination with 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; It is 0.2-500nm that its particle has one dimension mean sizes at least; In described cross-linking type synthetic rubber latex, in the weight of contained rubber and inorganic particulate slurries, the weight ratio of contained inorganic particulate is 99.5: 0.5-20: 80.
3. bumper impact polypropylene composition according to claim 1, the preparation method who it is characterized in that described nano combined nucleator comprises the steps: in the situation that adding or do not add crosslinking coagent, adopt energetic ray source to carry out after radiation vulcanization rubber latex, again by the slurries of inorganic particulate, nucleator, rubber latex after irradiation mixes, and obtains mixed emulsion, then this mixed emulsion is dried and obtains 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 its combination with 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; It is 0.2-500nm that its particle has one dimension mean sizes at least; In described rubber latex, in the weight of contained rubber and inorganic particulate slurries, the weight ratio of contained inorganic particulate is 99.5: 0.5-20: 80.
4. the preparation method of impact polypropylene composition for bumper claimed in 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 to rear extruding pelletization and obtain superoxide masterbatch, then base-material and superoxide masterbatch are mixed, extruding pelletization, obtain described bumper impact polypropylene composition.
5. the preparation method of impact polypropylene composition for bumper according to claim 4, it is characterized in that, base-material and superoxide masterbatch are mixed, the concrete grammar of extruding pelletization is: the major ingredient and the auxiliary material loading hopper that the base-material of gained and superoxide masterbatch are placed in respectively to twin screw extruder, extruding pelletization, the reinforced rotating speed of setting major ingredient and auxiliary material is respectively 21-23rpm, by twin screw extruder Ge district Temperature Setting, be: Z1:180-190 ℃, Z2:200-210 ℃, Z3:210-215 ℃, Z4:220-225 ℃, Z5:220-225 ℃, Z6:215-220 ℃, head: 200-210 ℃, the speed setting of twin screw extruder is 300-310rpm.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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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 |
| CN112745580A (en) * | 2019-10-30 | 2021-05-04 | 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 |
| CN113845698A (en) * | 2021-04-27 | 2021-12-28 | 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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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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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 |
| CN112745580A (en) * | 2019-10-30 | 2021-05-04 | 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 |
| 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 |
| CN113845698A (en) * | 2021-04-27 | 2021-12-28 | 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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