CN105566770A - Anti-impact high-transparency polypropylene composition and preparation method thereof - Google Patents
Anti-impact high-transparency polypropylene composition and preparation method thereof Download PDFInfo
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- CN105566770A CN105566770A CN201410527294.3A CN201410527294A CN105566770A CN 105566770 A CN105566770 A CN 105566770A CN 201410527294 A CN201410527294 A CN 201410527294A CN 105566770 A CN105566770 A CN 105566770A
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Abstract
The present invention belongs to the technical field of modified polypropylene materials, and particularly relates to an anti-impact high-transparency polypropylene composition and a preparation method thereof, wherein the anti-impact high-transparency polypropylene composition is prepared from the following raw materials by mass: 100 parts of a polypropylene resin, 6-15 parts of a polyolefin elastomer, 12-38 parts of metallocene linear low-density polyethylene, 0.06-0.46 part of a weather-resistant aid, and 0.002-0.015 part of a colorant. According to the present invention, the coloring anti-impact high-transparency polypropylene composition obtained through polypropylene modification has advantages of high transparency, high fluidity, high impact resistance and low cost. In addition, the preparation method is simple, is easy to perform, and is easy to operate.
Description
Technical field
The invention belongs to polypropylene modified material technical field, be specifically related to a kind of shock resistance high-transparency polypropylene composition and method of making the same.
Background technology
Transparent polypropylene has excellent performance, safety and sanitation, is easy to the features such as recovery, has been widely used in the fields such as thermoforming, crisper, medicine equipment, household supplies, general industry.Domestic market great majority be in the normal transparent polypropylene of low melting means, the problem such as often have when injection moulding large thin-wall high transparency goods that note is discontented, transparency is not high and impact resistance is poor, and some producer is in actual applications usually by adding peroxide degradation to improve the processing fluidity of product, this often causes the quality of product unstable, products appearance easily turns to be yellow, and product volatile component concentration is high; Some goods low-temperature impact resistance or anti-dropping capability poor, namely usually said material embrittlement, cryogenic applications service requirements cannot be met, generally for and improve impelling strength and usually add conventional elastomers, but because elastomerics selection is improper, the transparency and the mechanical property of product can be had a strong impact on; The utilization of articles colored middle color concentrate is improper, the heavy metal content such as lead, mercury, sexavalent chrome and cadmium to be caused in goods to exceed standard, affects the transparency and the impact of goods simultaneously to a great extent.
Chinese patent CN102399395A " a kind of preparation method of high flowing high ethylene content polypropylene randon transparent copolymer resin ", describe and obtain by adding oxidation inhibitor, neutralizing agent, nucleator and stream change master batch the transparent polypropylene product that the finished product melt flow rate (MFR) is 16 ~ 18g/10min, this product melt mass flow rate is not high, and it is unstable easily to there is mobility quality by the product that stream change masterbatch (i.e. peroxide degradation method) obtains, product appearance is easily turned to be yellow, the problem such as in product the content of volatile organic matter (i.e. VOC) is higher.
Chinese patent CN1443801A " a kind of transparent polypropylene composition ", describe the transparent polypropylene composition by adding transparent base and ahthraquinone disperse dye acquisition, but the haze value of this material is higher than 28%, and namely transparency is too poor, be difficult to the service requirements meeting high transparent.
Chinese patent CN101759929B " a kind of high-transparency high-flowability toughened polypropylene material and preparation method thereof ", describe in homo-polypropylene by adding POE, metallocene m-LLPE, compatilizer, SEBS, white oil and oxidation inhibitor etc., obtain transparent polypropylene composition, the melt mass flow rate of said composition is not high, be only 18 ~ 23g/10min, the modified component added is more, larger on the transparency impact of material.
Summary of the invention
The object of this invention is to provide a kind of shock resistance high-transparency polypropylene composition, there is excellent impact resistance energy and with color, advantage of lower cost; Invention also provides the preparation method of shock resistance high-transparency polypropylene composition, scientific and reasonable, simple.
Shock resistance high-transparency polypropylene composition of the present invention, be made up of the raw material of following mass fraction:
Described acrylic resin is Propylene-ethylene random copolymer, and its melt mass flow rate (230 DEG C, 2.16kg) is 20-45g/10min, and simply supported beam notched Izod impact strength is 5-7kJ/m2, and bending elastic modulus is 1000-1200MPa.
Described Propylene-ethylene random copolymer is adopt the technology of hydrogen Molecular regulator amount to produce, for uncontrolled flow political reform is produced, and the Propylene-ethylene random copolymer that the preferred Sinopec asphalt in Shenli Refinery of this acrylic resin produces.This acrylic resin is commercial prod, and has comprised necessary assistant as one or more in oxidation inhibitor, acid-acceptor, static inhibitor or nucleator; Wherein nucleator is the Sorbitol Nucleator of transmission increasing, and preferred nucleator name is called two-O-[(4-propyl phenyl) the methylene radical]-nonyl alcohol of 1,2,3-tri-deoxidation-4,6:5,7-.
Described polyolefin elastomer is based elastomers or propylene-based elastomeric, the elastomeric shock strength adding membership raising polypropylene material, but selected elastomerics must have good consistency and matching with polypropylene, if it is improper to select, considerable influence can be had to the polyacrylic transparency.Based elastomers is the multipolymer of ethene and alpha-olefin (1-butylene, 1-hexene, 1-octene), based elastomers used in the present invention is the multipolymer of ethene and octene, its melt mass flow rate (190 DEG C, 2.16kg) be 10 ~ 35g/10min, density is 0.860 ~ 0.902g/cm
3, mooney viscosity (ML1+4121 DEG C) is less than 10, is preferably less than 8, is more preferably less than 5; Propylene-based elastomeric is the multipolymer of propylene and ethene, and its melt mass flow rate of selected propylene-based elastomeric (230 DEG C, 2.16kg) is 8 ~ 15g/10min, and density is 0.860 ~ 0.880g/cm
3, mooney viscosity (ML1+4121 DEG C) is less than 30, is preferably less than 20, is more preferably less than 10.The preferred trade mark of based elastomers of the present invention is the Engage8402 that DOW chemical company produces, and when practical application, selects suitable addition according to cost; The preferred trade mark of propylene-based elastomeric is the Vistamaxx6202 of Exxon Mobil.
Described metallocene linear-low density polyethylene (mLLDPE), its melt mass flow rate (190 DEG C, 2.16kg) is 10 ~ 30g/10min, and density is 0.912 ~ 0.930g/cm
3, molecular weight distribution mw/mn is between 2 ~ 3.This mLLDPE resin is the copolymer of ethene and a kind of alpha-olefin (as 1-butylene, 1-hexene, 1-octene, tetramethyl--1-amylene etc.), this mLLDPE resin adopts metallocene catalyst to produce on Sinopec asphalt in Shenli Refinery gas-phase process device, the preferred 1-hexene of its comonomer of copolymer.In research process of the present invention, have been found that this resin can improve the impact property of polypropylene random copolymer material, simultaneously less on the transparency impact of atactic copolymerized polypropene.Found by research, metallocene linear-low density polyethylene and elastomerics can play coordination plasticizing effect, improve the impact property of material.This material contributes to reducing material modified cost simultaneously.
Described weather-proof auxiliary agent is one or both in photostabilizer or UV light absorber, and photostabilizer is hindered amines HALS, is called for short HALS, the TINUV770 of preferred vapour Bagong department; UV light absorber is benzotriazole category, the TINUV571 of preferred vapour Bagong department.
Described tinting material is many rings pigment dyestuff, the one preferably in blue, green, red, yellow, orange, purple or grey.Blue pigments is such as indanthrone and copper phthalocyanine series, such as pigment blue 60.Veridian is such as copper phthalocyanine series, such as pigment Green 7 and pigment green 36.Magenta pigment is such as quinacridone series, such as 2,9-dichloro quinacridone, Pigment red 202.Red pigment is such as quinacridone series, such as dimethylquinacridone, pigment red 122 ， Huo perylene series, such as pigment red 149, Pigment red 178 and pigment red179, or diketopyrrolopyrrolecocrystals series, such as Pigment red 254 and Pigment red 264.Yellow ultramarine is such as talk endlessly pyridine, isoindoline ketone and isoindoline series, such as Pigment Yellow 73 215, Pigment Yellow 73 110 and pigment yellow 13 9.Orange pigments is isoindoline ketone or diketopyrrolopyrrolecocrystals series, such as pigment orange 61, pigment orange 71 and pigment orange 73.Violet pigment is such as quinacridone series, such as pigment violet 19, or diazine series, such as pigment Violet 23 or pigment violet 37.
The preparation method of shock resistance high-transparency polypropylene composition of the present invention, step is as follows:
(1) batch mixing: acrylic resin, polyolefin elastomer, metallocene linear-low density polyethylene, tinting material and weather-proof auxiliary agent are placed in homogenizer, stir 3-5min under the rotating speed of 1000-1500r/min, mix;
(2) extruding pelletization: the material mixed is added parallel dual-screw extruding machine melting mixing, extruding pelletization obtains, and forcing machine the highest section of temperature is 180-210 DEG C, forcing machine engine speed 150-230r/min, feeding rotating speed 30-50r/min.
The present composition is resin based on atactic copolymerized polypropene, by adding metallocene linear polyethylene, polyolefin elastomer, tinting material and weather-proof auxiliary agent etc., again through double-screw extruding pelletizing after homogenizer mixes, obtain painted shock resistance high-transparency polypropylene composition.
The present invention can be applicable to large thin-wall transparency finishing case, the washing machine transparent cover plate and other transparent component goods etc. of low-temperature impact requirement.
The present invention compared with prior art, has following beneficial effect:
By the painted high-transparent impact-resistant polypropene composition that polypropylene modification obtains in the present invention, have high transparent, high workability and higher shock resistance, have the advantage of low cost, its preparation method is simple simultaneously, easy handling.
Embodiment
Below in conjunction with embodiment, the present invention is described further.
Each component of embodiment is placed in homogenizer, under the rotating speed of 1500r/min, stirs 3min, mix; Then the Preblend obtained is joined melting mixing in parallel dual-screw extruding machine, forcing machine the highest section of temperature is 200 DEG C, forcing machine engine speed 180r/min, and feeding rotating speed 40r/min, extruding pelletization obtains high-transparent impact-resistant polypropene composition.
By the high-transparent impact-resistant polypropene composition obtained, injection moulding processability test sample on the K-TEC85 type injection moulding machine that German MILACRON company produces.
Test performance is carried out according to respective country standard method of test:
Melt mass flow rate (MFR): undertaken by GB/T3682-2000, counterweight 2.16kg, temperature 230 DEG C;
Mist degree and transmittance are tested according to GB/T2410-2008, and thickness of sample is 1mm;
Simply supported beam notched Izod impact strength is tested according to GB/T1043-2008;
Bending property is tested according to GB/T9341-2008;
Load deformation temperature is tested according to GB/T1634.2-2004.
The component proportion of embodiment 1-6 and comparative example 1-3 in table 1, comparative example preparation technology and testing method identical with embodiment, composition properties test result prepared by embodiment 1-6 and comparative example 1-3 is in table 2; The component proportion of embodiment 7-12 and comparative example 4-6 is in table 3, and its composition properties test result prepared is in table 4.Each raw material fundamental property is in table 5.
The proportioning (mass fraction) of each component of table 1 embodiment 1-6 and comparative example 1-3
Composition fundamental property prepared by table 2 embodiment 1-6 and comparative example 1-3
The proportioning (mass fraction) of each component of table 3 embodiment 7-12 and comparative example 4-6
Composition fundamental property prepared by table 4 embodiment 7-12 and comparative example 4-6
Test raw material is in table 5:
The fundamental property table of each raw material of table 5
Note: mooney viscosity (Mooneyviscosity), also known as rotation viscosity, is the numerical value measured with mooney's viscosimeter, substantially can reflects the polymerization degree and the molecular weight of synthesizing polymeric material.(ML1+4121 DEG C), wherein M represents Mooney, L expression ectotrochanter.1 represents preheating 1 minute, and 4 represent test 4 minutes, and 121 DEG C represent that test temperature is 121 DEG C.
Claims (10)
1. a shock resistance high-transparency polypropylene composition, is characterized in that being made up of the raw material of following mass fraction:
2. shock resistance high-transparency polypropylene composition according to claim 1, it is characterized in that described acrylic resin is Propylene-ethylene random copolymer, its melt mass flow rate is 20-45g/10min, and simply supported beam notched Izod impact strength is 5-7kJ/m
2, bending elastic modulus is 1000-1200MPa.
3. shock resistance high-transparency polypropylene composition according to claim 1, is characterized in that described polyolefin elastomer is based elastomers or propylene-based elastomeric.
4. shock resistance high-transparency polypropylene composition according to claim 3, it is characterized in that described based elastomers is the multipolymer of ethene and octene, the melt mass flow rate of based elastomers is 10-35g/10min, and density is 0.860-0.902g/cm
3, mooney viscosity is less than 10.
5. shock resistance high-transparency polypropylene composition according to claim 3, it is characterized in that described propylene-based elastomeric is the multipolymer of propylene and ethene, the melt mass flow rate of propylene-based elastomeric is 8-15g/10min, and density is 0.860-0.880g/cm
3, mooney viscosity is less than 30.
6. shock resistance high-transparency polypropylene composition according to claim 1, it is characterized in that the melt mass flow rate of described metallocene linear-low density polyethylene is 10-30g/10min, density is 0.912-0.930g/cm
3, molecular weight distribution mw/mn is between 2-3.
7. shock resistance high-transparency polypropylene composition according to claim 1, is characterized in that described weather-proof auxiliary agent is one or both in photostabilizer or UV light absorber.
8. shock resistance high-transparency polypropylene composition according to claim 7, it is characterized in that described photostabilizer is HALS, UV light absorber is benzotriazole category.
9. shock resistance high-transparency polypropylene composition according to claim 1, is characterized in that described tinting material is many rings pigment dyestuff.
10. a preparation method for the arbitrary described shock resistance high-transparency polypropylene composition of claim 1-9, is characterized in that step is as follows:
(1) batch mixing: acrylic resin, polyolefin elastomer, metallocene linear-low density polyethylene, tinting material and weather-proof auxiliary agent are placed in homogenizer, stir 3-5min under the rotating speed of 1000-1500r/min, mix;
(2) extruding pelletization: the material mixed is added parallel dual-screw extruding machine melting mixing, extruding pelletization obtains, and forcing machine the highest section of temperature is 180-210 DEG C, forcing machine engine speed 150-230r/min, feeding rotating speed 30-50r/min.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108329643A (en) * | 2017-12-29 | 2018-07-27 | 上海帆顺包装集团有限公司 | A kind of low temperature impact acrylic resin, preparation method and hollow product prepared therefrom |
| CN108690264A (en) * | 2017-04-12 | 2018-10-23 | 合肥杰事杰新材料股份有限公司 | A kind of polypropylene material and preparation method thereof of low gloss, anti-tiger fur line injection defect |
| CN109438603A (en) * | 2018-09-07 | 2019-03-08 | 中国石油化工股份有限公司 | A kind of transparent anti-impact atactic copolymerized polypropene blow molding is resin dedicated and preparation method thereof |
| CN109942961A (en) * | 2019-02-27 | 2019-06-28 | 王德秀 | A kind of method of pair of copolymer polypropylene performance enhancement |
| CN112538215A (en) * | 2019-09-20 | 2021-03-23 | 茂名骐锋新材料有限公司 | Impact-resistant low-temperature-resistant high-transparency polypropylene composition |
| CN113980383A (en) * | 2021-10-25 | 2022-01-28 | 成都金发科技新材料有限公司 | Polypropylene composition with high light transmission and low-temperature toughness as well as preparation method and application thereof |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108690264A (en) * | 2017-04-12 | 2018-10-23 | 合肥杰事杰新材料股份有限公司 | A kind of polypropylene material and preparation method thereof of low gloss, anti-tiger fur line injection defect |
| CN108329643A (en) * | 2017-12-29 | 2018-07-27 | 上海帆顺包装集团有限公司 | A kind of low temperature impact acrylic resin, preparation method and hollow product prepared therefrom |
| CN109438603A (en) * | 2018-09-07 | 2019-03-08 | 中国石油化工股份有限公司 | A kind of transparent anti-impact atactic copolymerized polypropene blow molding is resin dedicated and preparation method thereof |
| CN109438603B (en) * | 2018-09-07 | 2021-12-07 | 中国石油化工股份有限公司 | Special transparent impact-resistant polypropylene random copolymer resin for blow molding and preparation method thereof |
| CN109942961A (en) * | 2019-02-27 | 2019-06-28 | 王德秀 | A kind of method of pair of copolymer polypropylene performance enhancement |
| CN112538215A (en) * | 2019-09-20 | 2021-03-23 | 茂名骐锋新材料有限公司 | Impact-resistant low-temperature-resistant high-transparency polypropylene composition |
| CN112538215B (en) * | 2019-09-20 | 2023-07-25 | 茂名骐锋新材料有限公司 | Impact-resistant low-temperature-resistant high-transparency polypropylene composition |
| CN113980383A (en) * | 2021-10-25 | 2022-01-28 | 成都金发科技新材料有限公司 | Polypropylene composition with high light transmission and low-temperature toughness as well as preparation method and application thereof |
| CN113980383B (en) * | 2021-10-25 | 2023-07-11 | 成都金发科技新材料有限公司 | Polypropylene composition with high light transmittance and low temperature toughness as well as preparation method and application thereof |
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