CN101503539B - Toughened cold-resistant transparent modified polypropylene material and preparation method - Google Patents
Toughened cold-resistant transparent modified polypropylene material and preparation method Download PDFInfo
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- CN101503539B CN101503539B CN2009100962049A CN200910096204A CN101503539B CN 101503539 B CN101503539 B CN 101503539B CN 2009100962049 A CN2009100962049 A CN 2009100962049A CN 200910096204 A CN200910096204 A CN 200910096204A CN 101503539 B CN101503539 B CN 101503539B
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Abstract
The invention provides a toughening cold-resistant transparent modified polypropylene material and a preparation method. The material is mainly made from the following components in parts by weight: 60-90 parts of homogeneous polypropylene, 10-30 parts of a toughening agent, 0.1-0.4 part of an alpha-nucleation agent, 0.1-0.4 part of a beta-nucleation agent and 0.2-0.4 part of an antioxidant. The material is added with propylene made from alpha-olefin with the same refractive index as polypropylene and a semi-crystalline polymer of the alpha-olefin as the toughening agent, thus the material can reduce effect on transparence of the polypropylene material and realize cold resistance and toughening of the polypropylene, and can be used together with an alpha-crystallographic form nucleating agent after compounding with a beta-crystallographic form nucleating agent to control proportions of polypropylene alpha-crystallographic form to polypropylene beta-crystallographic form, thus improving transparence of the polypropylene, compensating rigidity at room temperature and heat deformation temperature of the polypropylene and finally realizing development of the toughening cold-resistant transparent modified polypropylene.
Description
Technical field
The present invention relates to a kind of modified polymer material Vestolen PP 7052, especially can resist cold and have the Vestolen PP 7052 of the transparency.
Background technology
Vestolen PP 7052 is second largest resins for universal use of world wide production, and light weight, characteristics such as inexpensive, nontoxic, tasteless are arranged, and percent crystallinity is up to the 50%-70% Heat stability is good, and decomposition temperature can reach more than 300 ℃, is heat-resisting the highest a kind of in the general-purpose plastics.Product can be under 100 ℃ condition scalding.Can be at 100-120 ℃ of following life-time service; Do not receive external force to do the time spent, can be indeformable 150 ℃ of uses.Plasticity is good, and ys is high, and very high flexible life is arranged.Therefore, Vestolen PP 7052 is widely used in automobile, household electrical appliances, daily necessities and film, fiber, packaging field.
The polypropylene transparent degree is low, belongs to translucent plastic, and outstanding performance shortcomings is arranged, and shock strength is along with temperature variation is remarkable, and temperature reduces also variation rapidly of its shock strength, subzero 15 to subzero 20 degree be embrittlement.Common toughner can improve polyacrylic toughness and winter hardiness, but because itself refractive index differs bigger with Vestolen PP 7052, exists with the small-particle form in the adding Vestolen PP 7052, causes the polypropylene transparent degree to descend significantly.And be used for the Vestolen PP 7052 of low temperature packaging field, then require to have enough low-temperature flexibilities and transparency.Therefore, exploitation has certain low-temperature flexibility has the polypropylene material of enough transparencies also to become now the hot topic of research in the industry again.
Summary of the invention
In view of above demand, main purpose of the present invention is to provide a kind of toughened cold-resistant transparent modified polypropylene material and preparation method, and this Vestolen PP 7052 not only has outstanding low-temperature flexibility, also has the transparency higher than plain polypropylene.
Be the realization above-mentioned purpose, a kind of toughened cold-resistant transparent modified polypropylene material provided by the invention, it mainly comprises following component, is expressed as with parts by weight:
HOPP: 60～90;
Toughner: 10～30;
α nucleator: 0.1～0.4;
Beta nucleater: 0.1～0.4;
Oxidation inhibitor: 0.2～0.4.
Wherein, said toughner can be terpolymer EP rubber (EPDM), POE (POE), ethylene-butylene copolymer (its rich horse), metallocene polypropylene (MPP), alhpa olefin/propylene copolymer.
Said α nucleator can be sorbitol derivatives class, organic phosphate.
Said beta nucleater can be one or more in substituted aromatic amide class, substituted benzene amides, aromatic amine, the rare earth compounding class.
Said oxidation inhibitor class: can be oxidation inhibitor 215, antioxidant 1010, oxidation inhibitor 168.
Preferably, toughened cold-resistant transparent modified polypropylene material provided by the invention, calculating by weight comprises following component:
HOPP: 85;
Alhpa olefin/propylene copolymer: 15;
Sorbose alcohols α nucleator: 0.15;
Substituted aromatic amide class beta nucleater: 0.25;
Oxidation inhibitor 215:0.3.
Preferably, modified polypropylene material provided by the invention, calculating by weight comprises following component:
HOPP: 75;
Alhpa olefin/propylene copolymer: 25;
Sorbose alcohols α nucleator: 0.2;
Substituted aromatic amide class beta nucleater: 0.12;
Rare earth compounding class beta nucleater: 0.08;
Oxidation inhibitor 215:0.3.
Preferably, modified polypropylene material provided by the invention, calculating by weight comprises following component:
HOPP: 65;
Alhpa olefin/propylene copolymer: 35;
Sorbose alcohols α nucleator: 0.25;
Substituted benzene amides beta nucleater: 0.15;
Rare earth compounding class beta nucleater: 0.05;
Oxidation inhibitor 215:0.3.
Preferably, modified polypropylene material provided by the invention, calculating by weight comprises following component:
HOPP: 75;
Alhpa olefin/propylene copolymer: 25;
Sorbose alcohols α nucleator: 0.2;
Aromatic amine beta nucleater: 0.12;
Rare earth compounding class beta nucleater: 0.08;
Oxidation inhibitor 215:0.3.
Preferably, modified polypropylene material provided by the invention, calculating by weight comprises following component:
HOPP: 75;
Alhpa olefin/propylene copolymer: 25;
Sorbose alcohols α nucleator: 0.15;
Aromatic amine beta nucleater: 0.05;
Substituted benzene amides beta nucleater: 0.02
Rare earth compounding class beta nucleater: 0.08;
Oxidation inhibitor 215:0.3.
Its preparation method is:
The first step, take by weighing Vestolen PP 7052, toughner, nucleator, oxidation inhibitor by weight percent in the preceding text;
Second the step, with above-mentioned materials in high-speed mixer, with 600～900 rev/mins speed, mixed 5～8 minutes;
The 3rd step, through intermediate bunker, the starting material that mix are sent in the twin screw extruder, the high speed shear of twin screw, mixing and carry under; Material is able to melt fully, and is compound, and the length-to-diameter ratio of the twin screw extrusion equipment of employing is 36: 1; And have precise dose control and vacuum-pumping equipment, and screw speed is being 400～600 rev/mins, it is 140～160 ℃ in a district that its twin screw is extruded working temperature; 160～180 ℃ in two districts, 170～190 ℃ in three districts, 180～200 ℃ in four districts; 185～210 ℃ in five districts, 180～210 ℃ in six districts, 180～200 ℃ in seven districts; 170～180 ℃ of head temperatures, 180～200 ℃ of temperature of charge, material be 1～2 minute residence time in barrel;
The 4th goes on foot, extrudes, tie rod, and cooling, pelletizing obtains finished product at last.-
The technical solution adopted for the present invention to solve the technical problems is: is toughner through adding the propylene that the close alhpa olefin of a kind of refractive index and Vestolen PP 7052 forms with the semi-crystalline polymer of alhpa olefin, and realization is to polyacrylic cold-resistant toughened under the influence that reduces transparency to polypropylene material, modulus in flexure.Also use with the alpha-crystal form nucleator behind the composite beta crystal-type nucleater; Control Vestolen PP 7052 through adjustment α, beta crystal-type nucleater ratio and generate α, beta crystal ratio; Reach the polyacrylic transparency of raising, remedy polyacrylic modulus in flexure, heat-drawn wire, finally realize the polyacrylic exploitation of toughened cold-resistant transparent.
Embodiment:
Embodiment 1
Take by weighing in proportion
HOPP: 85;
Alhpa olefin/propylene copolymer: 15;
Sorbose alcohols α nucleator: 0.15;
Substituted aromatic amide class beta nucleater: 0.25;
Oxidation inhibitor 215:0.3.
The first step, take by weighing Vestolen PP 7052, toughner, nucleator, oxidation inhibitor by weight percent in above-mentioned;
Second the step, with above-mentioned materials in high-speed mixer, with 600～900 rev/mins speed, mixed 5～8 minutes;
The 3rd step, through intermediate bunker, the starting material that mix are sent in the twin screw extruder, the high speed shear of twin screw, mixing and carry under; Material is able to melt fully, and is compound, and the length-to-diameter ratio of the twin screw extrusion equipment of employing is 36: 1; And have precise dose control and vacuum-pumping equipment, and screw speed is being 400～600 rev/mins, it is 140～160 ℃ in a district that its twin screw is extruded working temperature; 160～180 ℃ in two districts, 170～190 ℃ in three districts, 180～200 ℃ in four districts; 185～210 ℃ in five districts, 180～210 ℃ in six districts, 180～200 ℃ in seven districts; 170～180 ℃ of head temperatures, 180～200 ℃ of temperature of charge, material be 1～2 minute residence time in barrel;
The 4th goes on foot, extrudes, tie rod, and cooling, pelletizing obtains finished product at last.
The gained particle is processed goods through injection moulding, tests its performance then, and its result is as shown in table 1:
Table 1: embodiment 1 gained finished product test result
Embodiment 2
Take by weighing in proportion
HOPP: 75;
POE: 25;
Sorbose alcohols α nucleator: 0.2;
Substituted benzene amides beta nucleater: 0.12;
Rare earth compounding class beta nucleater: 0.08;
Antioxidant 1010: 0.3.
After again this material being passed through the high-speed mixer mixed at high speed, through the twin screw extruder mixing granulator, the gained particle is processed goods through injection moulding, tests its performance then, and its result is as shown in table 2:
Table 2: embodiment 2 gained finished product test results
Embodiment 3
Take by weighing in proportion
HOPP: 65;
Metallocene polypropylene: 35;
Sorbose alcohols α nucleator: 0.25;
Aromatic amine beta nucleater: 0.15;
Rare earth compounding class beta nucleater: 0.05;
Oxidation inhibitor 168:0.3.
After again this material being passed through the high-speed mixer mixed at high speed, through the twin screw extruder mixing granulator, the gained particle is processed goods through injection moulding, tests its performance then, and its result is as shown in table 3:
Table 3: embodiment 3 gained finished product test results
Embodiment 4
Take by weighing in proportion
HOPP: 75;
POE: 25;
Sorbose alcohols α nucleator: 0.2;
Aromatic amine beta nucleater: 0.12;
Rare earth compounding class beta nucleater: 0.08;
Antioxidant 1010: 0.3.
After again this material being passed through the high-speed mixer mixed at high speed, through the twin screw extruder mixing granulator, the gained particle is processed goods through injection moulding, tests its performance then, and its result is as shown in table 4:
Table 4: embodiment 4 gained finished product test results
Embodiment 5
Take by weighing in proportion
HOPP: 75;
Alhpa olefin/propylene copolymer: 25;
Sorbose alcohols α nucleator: 0.15;
Aromatic amine beta nucleater: 0.05;
Substituted benzene amides beta nucleater: 0.02
Rare earth compounding class beta nucleater: 0.08;
Oxidation inhibitor 215:0.3.
After again this material being passed through the high-speed mixer mixed at high speed, through the twin screw extruder mixing granulator, the gained particle is processed goods through injection moulding, tests its performance then, and its result is as shown in table 5:
Table 5: embodiment 5 gained finished product test results
Above embodiment is the detailed description that the present invention is done.Notice that these embodiments are not in order to limit the present invention, for those skilled in the art, the improvement of under the situation that does not deviate from spirit of the present invention, being made and additional should be regarded as within protection scope of the present invention.
Claims (4)
1. a toughened cold-resistant transparent modified polypropylene material is characterized in that, mainly comprises following component, is expressed as with parts by weight
HOPP 60～90,
Toughner 10～30,
α nucleator 0.1～0.4,
Beta nucleater 0.1～0.4,
Oxidation inhibitor 0.2～0.4;
Said toughner is alhpa olefin/propylene copolymer;
Said α nucleator is a kind of of sorbitol derivatives class, organic phosphate;
Said beta nucleater is one or more mixing in substituted benzene amides, aromatic amine, the rare earth compounding class.
2. a kind of toughened cold-resistant transparent modified polypropylene material according to claim 1 is characterized in that, its prescription calculates by weight and comprises following component:
HOPP: 75;
Alhpa olefin/propylene copolymer: 25:
Sorbose alcohols α nucleator: 0.2;
Substituted aromatic amide class beta nucleater: 0.12;
Rare earth compounding class beta nucleater: 0.08;
Oxidation inhibitor 215:0.3.
3. a kind of toughened cold-resistant transparent modified polypropylene material according to claim 1 is characterized in that, its prescription calculates by weight and comprises following component:
HOPP: 75;
Alhpa olefin/propylene copolymer: 25;
Sorbose alcohols α nucleator: 0.2;
Aromatic amine beta nucleater: 0.12;
Rare earth compounding class beta nucleater: 0.08;
Oxidation inhibitor 215:0.3.
4. the preparation method of a kind of toughened cold-resistant transparent modified polypropylene material according to claim 1, it is characterized in that: this method is:
The first step, take by weighing Vestolen PP 7052, toughner, nucleator, oxidation inhibitor by weight;
Second the step, with above-mentioned materials in high-speed mixer, with 600～900 rev/mins speed, mixed 5～8 minutes;
The 3rd step, through intermediate bunker, the starting material that mix are sent in the twin screw extruder, the high speed shear of twin screw, mixing and carry under; Material is able to melt fully, and is compound, and the length-to-diameter ratio of the twin screw extrusion equipment of employing is 36: 1; And have precise dose control and vacuum-pumping equipment, and screw speed is being 400～600 rev/mins, it is 140～160 ℃ in a district that its twin screw is extruded working temperature; 160～180 ℃ in two districts, 170～190 ℃ in three districts, 180～200 ℃ in four districts; 185～210 ℃ in five districts, 180～210 ℃ in six districts, 180～200 ℃ in seven districts; 170～180 ℃ of head temperatures, 180～200 ℃ of temperature of charge, material be 1～2 minute residence time in barrel;
The 4th goes on foot, extrudes, tie rod, and cooling, pelletizing obtains finished product at last.
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| CN2009100962049A CN101503539B (en) | 2009-02-26 | 2009-02-26 | Toughened cold-resistant transparent modified polypropylene material and preparation method |
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| CN101503539B true CN101503539B (en) | 2012-02-01 |
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