CN103509230B - Be applied to the modified master of polyethylene film and preparation thereof, using method - Google Patents
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- CN103509230B CN103509230B CN201210215556.3A CN201210215556A CN103509230B CN 103509230 B CN103509230 B CN 103509230B CN 201210215556 A CN201210215556 A CN 201210215556A CN 103509230 B CN103509230 B CN 103509230B
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
- C08K5/005—Stabilisers against oxidation, heat, light, ozone
-
- 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
-
- 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
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/20—Compounding polymers with additives, e.g. colouring
- C08J3/22—Compounding polymers with additives, e.g. colouring using masterbatch techniques
- C08J3/226—Compounding polymers with additives, e.g. colouring using masterbatch techniques using a polymer as a carrier
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
- C08K5/0083—Nucleating agents promoting the crystallisation of the polymer matrix
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
- C08L23/0807—Copolymers of ethene with unsaturated hydrocarbons only containing more than three carbon atoms
- C08L23/0815—Copolymers of ethene with aliphatic 1-olefins
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/04—Homopolymers or copolymers of ethene
- C08J2323/08—Copolymers of ethene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/04—Homopolymers or copolymers of ethene
- C08J2423/08—Copolymers of ethene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/10—Transparent films; Clear coatings; Transparent materials
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/16—Applications used for films
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- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
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Abstract
The present invention relates to the polyethylene film manufacture fields such as plastic sheeting for farm use, packing film, stretch wrap film, be specifically related to a kind of be applied to polyethylene film modified master and preparation, using method, it is characterized in that being formed by the preparation of raw material of following parts by weight: polyethylene powder resin 100 parts, 0.025 ~ 0.15 part, oxidation inhibitor, nucleator A3 ~ 15 part and nucleator B3 ~ 15 part, wherein, nucleator A is selected from Metalsalts of hexahydrophthalic acid, and nucleator B is selected from glucitols and derivative thereof.The invention has the advantages that: the polyethylene composition containing modified master can be used as film article, comprise the fields such as agricultural film, packaging film and stretch wrap film, the tear-resistant power that polyvinyl resin prepares film after adding modified master of the present invention can improve more than 40%, mist degree is maximum reduces by more than 60%, film sharpness improves more than 10%, thus improves the over-all properties of film article.
Description
Technical field
The present invention relates to the polyethylene film manufacture fields such as plastic sheeting for farm use, packing film, stretch wrap film, be specifically related to a kind of be applied to polyethylene film modified master and preparation, using method.
Background technology
Film article is a key areas of current polyethylene (PE) resin application, about has polyvinyl resin over half for film applications.Polyethylene film is widely used in the field such as agricultural, packing business, along with society, scientific and technological development, requires also more and more higher to the over-all properties of polyethylene film.Resistance to tearing weighs an important indicator of film performance, and film article in use may be torn because of External Force Acting, and enough tear-resistant ductilities can reduce the transmission of tearing, and improves film performance.Optical property is also one of film evaluation index, and good optical property can improve the visual appearance of film, and when using as packing film, lower mist degree and higher sharpness are also one of indexs of requiring of user.More and more general by using various additive to improve the performance of polyethylene film.
Patent CN101268132 " film and manufacture method thereof " describes film polyethylene composition, and said composition comprises polyvinyl resin, oxidation inhibitor, dicarboxylic acid metal salts, stearate.The composition that this patent provides comprises LLDPE, antioxidant 1010, irgasfos 168, hexahydrophthalic acid calcium, Zinic stearas, adopt Film Haze and the glossiness of said composition blowing to improve, but do not add hexahydrophthalic acid calcium and contrast the tear resistance of film and dart impact strength reduces.
Summary of the invention
The object of this invention is to provide a kind of be applied to polyethylene film modified master and preparation, using method, by obtaining new polyethylene composition after polyvinyl resin and modified master mixing, it is compared with existing polyethylene composition, mechanical property and the optical property of film article can be improved, thus improve the over-all properties of film article.
A kind of modified master being applied to polyethylene film of the present invention, it is characterized in that being formed by the preparation of raw material of following parts by weight: polyethylene powder resin 100 parts, 0.025 ~ 0.15 part, oxidation inhibitor, nucleator A3 ~ 15 part and nucleator B3 ~ 15 part, wherein, nucleator A is selected from Metalsalts of hexahydrophthalic acid, and nucleator B is selected from glucitols and derivative thereof.
Wherein, polyethylene powder resin is preferably the multipolymer of ethene and butene-1 or the multipolymer of ethene and hexene-1, its density is 0.910 ~ 0.960g/cm3, melt mass flow rate (MFR) is 0.1 ~ 50g/10min, it is 110 ~ 140 DEG C that differential scanning calorimeter measures polyvinyl resin melt temperature scope, and degree of branching scope is 0.1 ~ 3.0.
The parts by weight of oxidation inhibitor are preferably 0.03 ~ 0.1 part, are more preferably 0.05 ~ 0.08 part.
Oxidation inhibitor is preferably from Hinered phenols antioxidant or Hinered phenols antioxidant and phosphite ester kind antioxidant system, or Hinered phenols antioxidant, phosphite ester kind antioxidant and sulphur ester antioxidant system, wherein, in Hinered phenols antioxidant and phosphite ester kind antioxidant system, the mass ratio of Hinered phenols antioxidant and phosphite ester kind antioxidant is 1:0.1 ~ 5, is preferably 1:0.3 ~ 3; In Hinered phenols antioxidant, phosphite ester kind antioxidant and sulphur ester antioxidant system, phosphite ester kind antioxidant and sulphur ester antioxidant are 0.1 ~ 15:1 with the mass ratio of Hinered phenols antioxidant, be preferably 0.3 ~ 10:1, wherein the mass ratio of phosphite ester kind antioxidant and sulphur ester antioxidant is 1:0.1 ~ 4.
The fusing point of Hinered phenols antioxidant is between 100 DEG C ~ 260 DEG C, preferably from four [β-(3, 5 di-tert-butyl-hydroxy phenyls) propionic acid] pentaerythritol ester, β-(3, 5-di-tert-butyl-hydroxy phenyl) the positive octadecanol ester of propionic acid, (2, 4, 6-trioxy--1, 3, 5-triazine-1, 3, 5(2H, 4H, 6H)-three bases) trivinyl three [3-(3, 5-di-tert-butyl-hydroxy phenyl) acrylate, 1, 3, 5-trimethylammonium-2, 4, 6-tri-(3, 5-di-t-butyl-4-hydroxyl benzyl) benzene or 1, 3, 5-tri-(the 4-tertiary butyl-3-hydroxyl-2, 6-dimethyl benzyl)-1, 3, 5-triazine-2, 4, 6-(1H, 3H, one or more arbitrary proportions mixing in 5H)-triketone.
Phosphite ester kind antioxidant fusing point between 160 ~ 250 DEG C, preferably from three (2,4-di-tert-butyl-phenyl) phosphorous acid esters or tetramethylolmethane diphosphite two (2,4-di-tert-butyl phenyl) ester.
Sulphur ester antioxidant is preferably from two (18) ester of thio-2 acid or Tyox B.
Select above-mentioned antioxidant systems can play good synergy in modified master preparation process, avoid in modified master preparation process due to resin degradation that high temperature causes.
Nucleator A is preferably hexahydrophthalic acid calcium.
Nucleator B is preferably the Millad3988 of Milliken Co. or dibenzal sorbitol class and derivative thereof.
The preparation method being applied to the modified master of polyethylene film of the present invention, adds raw material in homogenizer and mixes after 5 ~ 10min, the material mixed joined conveniently technique melting in twin screw extruder, plastify, extrude, granulation.
The using method being applied to the modified master of polyethylene film of the present invention, one adds in homogenizer by Polyethylene pellet resins and modified master, after mixing 5 ~ 10min, the material mixed joined melting in twin screw extruder, plastifies, extrude, granulation, wherein, in twin screw extruder, the length-to-diameter ratio of screw rod affects plasticizing capacity and the transportation performance of material, and screw slenderness ratio of the present invention is 28 ~ 40, is preferably 30 ~ 35; Cutout in twin screw extruder in screw combinations affects plasticizing capacity and the palliating degradation degree of material, has 3 ~ 9 sections of cutouts in the screw combinations that the present invention adopts, comprising 1 ~ 5 section of flip Trim block, and preferably 6 sections of cutouts, wherein 3 sections is flip Trim block; Prepare that the processing temperature of composition is too high easily causes material degradation, temperature is too low to be unfavorable for plasticizing and to extrude, the processing temperature that the present invention adopts at 180 ~ 220 DEG C, preferably 200 DEG C.
Another Polyethylene pellet resins and modified master is added in homogenizer to mix after 5 ~ 10min, draws off the direct blown film of material and use.
Wherein, the polyethylene powder resin in Polyethylene pellet resins and modified master is same chemical composition, and the physical aspect of just performance is different.
In use, in Polyethylene pellet resins and the total material of modified master, the content of nucleator A is 300 ~ 2000ppm, be preferably 500 ~ 1500ppm, be more preferably 1000ppm, the content of nucleator B is 300 ~ 2000ppm, be preferably 500 ~ 1500ppm, be more preferably 1000ppm.
The invention has the advantages that: the polyethylene composition containing modified master can be used as film article, comprise the fields such as agricultural film, packaging film and stretch wrap film, the tear-resistant power that polyvinyl resin prepares film after adding modified master of the present invention can improve more than 40%, mist degree is maximum reduces by more than 60%, film sharpness improves more than 10%, thus improves the over-all properties of film article.
Embodiment
Below in conjunction with embodiment, the present invention will be further described.
Below first four kinds of modified masters are prepared, with this in the middle of embodiment.
Masterbatch 1(is parts by weight, lower same):
Masterbatch 2:
Masterbatch 3:
Masterbatch 4:
Embodiment 1:
Polyethylene pellet resins (ethene, butene-1 copolymerization, MFR=2.0g/10mim, density 0.920g/cm
3) 99 parts
Modified master 11 parts
Screw slenderness ratio: 30
Screw combinations: 8 sections of cutouts, 3 sections of flip Trims
Processing temperature: 190 DEG C
Embodiment 2:
(ethene, butene-1 copolymerization, slurry catalyst synthesizes Polyethylene pellet resins, MFR=2.0g/10mim, density 0.918g/cm
3)
99 parts
Modified master 21 parts
Height stirs blended direct blown film
Embodiment 3:
(ethene, hexene-1 copolymerization, slurry catalyst synthesizes Polyethylene pellet resins, MFR=2.0g/10mim, density 0.920g/cm
3)
98 parts
Modified master 32 parts
Screw slenderness ratio: 35
Screw combinations: 6 sections of cutouts, 3 sections of flip Trims
Processing temperature: 200 DEG C
Embodiment 4:
Polyethylene pellet resins (ethene, butene-1 copolymerization, MFR=2.0g/10mim, density 0.918g/cm3) 98.5 parts
Modified master 41.5 parts
Screw slenderness ratio: 40
Screw combinations: 5 sections of cutouts, 3 sections of flip Trims
Processing temperature: 180 DEG C
Embodiment 5:
(ethene, butene-1 copolymerization, slurry catalyst synthesizes Polyethylene pellet resins, MFR=2.0g/10mim, density 0.920g/cm
3)
98.5 parts
Modified master 11.5 parts
Height stirs blended
Embodiment 6:
(ethene, hexene-1 copolymerization, slurry catalyst synthesizes Polyethylene pellet resins, MFR=2.0g/10mim, density 0.920g/cm
3)
98 parts
Modified master 22 parts
Screw slenderness ratio: 30
Screw combinations: 7 sections of cutouts, 3 sections of flip Trims
Processing temperature: 190 DEG C
Embodiment 7:
(ethene, butene-1 copolymerization, slurry catalyst synthesizes Polyethylene pellet resins, MFR=2.0g/10mim, density 0.920g/cm
3)
99 parts
Modified master 31 parts
Screw slenderness ratio 35 parts
Screw combinations: 5 sections of cutouts, 4 sections of flip Trims
Processing temperature: 180 DEG C
Embodiment 8:
Polyethylene pellet resins (ethene, hexene-1 copolymerization, MFR=2.0g/10mim, density 0.920g/cm
3) 98 parts
Modified master 42 parts
Height stirs blended
Comparative example 1:
Twin screw granulation after after the mixing of high-speed stirring joint, screw combinations: shear fast for 5 sections, 3 sections of flip Trims
Comparative example 2:
Twin screw granulation after homogenizer mixing, screw combinations: shear fast for 8 sections, 3 sections of flip Trims
Comparative example 3:
Twin screw granulation after homogenizer mixing, screw combinations: shear fast for 6 sections, 3 sections of flip Trims
Comparative example 4:
Twin screw granulation after homogenizer mixing, screw combinations: shear fast for 6 sections, 3 sections of flip Trims
Embodiment 1 ~ 8 and comparative example 1 ~ 4 prepare film performance evaluation in table 1.
Table 1: film performance contrasts
As can be seen from Table 1, the polyethylene composition that the polyethylene composition that with the addition of A, B two kinds of nucleators prepares the optical property of film, tear-resistant strength ratio does not add nucleator or only add a kind of nucleator is prepared film and is wanted high, wherein mist degree is maximum reduces by more than 60%, tear-resistant power improves more than 40%, illustrates that two kinds of nucleators can be good at raising film over-all properties at adding in the film.
Claims (9)
1. one kind is applied to the modified master of polyethylene film, it is characterized in that being formed by the preparation of raw material of following parts by weight: polyethylene powder resin 100 parts, 0.025 ~ 0.15 part, oxidation inhibitor, nucleator A3 ~ 15 part and nucleator B3 ~ 15 part, wherein, nucleator A is selected from Metalsalts of hexahydrophthalic acid, and nucleator B is selected from glucitols and derivative thereof;
Wherein,
Oxidation inhibitor is selected from Hinered phenols antioxidant or Hinered phenols antioxidant and phosphite ester kind antioxidant system, or Hinered phenols antioxidant, phosphite ester kind antioxidant and sulphur ester antioxidant system, wherein, in Hinered phenols antioxidant and phosphite ester kind antioxidant system, the mass ratio of Hinered phenols antioxidant and phosphite ester kind antioxidant is 1:0.1 ~ 5; In Hinered phenols antioxidant, phosphite ester kind antioxidant and sulphur ester antioxidant system, phosphite ester kind antioxidant and sulphur ester antioxidant are 0.1 ~ 15:1 with the mass ratio of Hinered phenols antioxidant, and wherein the mass ratio of phosphite ester kind antioxidant and sulphur ester antioxidant is 1:0.1 ~ 4.
2. the modified master being applied to polyethylene film according to claim 1, is characterized in that the parts by weight of oxidation inhibitor are 0.03 ~ 0.1 part.
3. the modified master being applied to polyethylene film according to claim 1, it is characterized in that phosphite ester kind antioxidant fusing point is between 160 ~ 250 DEG C, be selected from three (2,4-di-tert-butyl-phenyl) phosphorous acid esters or tetramethylolmethane diphosphite two (2,4-di-tert-butyl phenyl) ester.
4. the modified master being applied to polyethylene film according to claim 1, is characterized in that sulphur ester antioxidant is selected from two (18) ester of thio-2 acid or Tyox B.
5. the modified master being applied to polyethylene film according to claim 1, is characterized in that nucleator A is hexahydrophthalic acid calcium.
6. the preparation method being applied to the modified master of polyethylene film according to claim 1, it is characterized in that raw material to add in homogenizer and mix after 5 ~ 10min, the material mixed joined conveniently technique melting in twin screw extruder, plastify, extrude, granulation.
7. the using method being applied to the modified master of polyethylene film according to claim 1, Polyethylene pellet resins and modified master is it is characterized in that to add in homogenizer, after mixing 5 ~ 10min, the material mixed joined melting in twin screw extruder, plastifies, extrude, granulation, wherein, the screw slenderness ratio of twin screw extruder is 28 ~ 40; 3 ~ 9 sections of cutouts are had, comprising 1 ~ 5 section of flip Trim block in screw combinations; Processing temperature is at 180 ~ 220 DEG C.
8. the using method being applied to the modified master of polyethylene film according to claim 1, is characterized in that Polyethylene pellet resins and modified master to add in homogenizer and mixes after 5 ~ 10min, draws off the direct blown film of material and uses.
9. the using method being applied to the modified master of polyethylene film according to claim 7 or 8, it is characterized in that, in Polyethylene pellet resins and the total material of modified master, the content of nucleator A is 300 ~ 2000ppm, the content of nucleator B is 300 ~ 2000ppm.
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| CN201210215556.3A CN103509230B (en) | 2012-06-27 | 2012-06-27 | Be applied to the modified master of polyethylene film and preparation thereof, using method |
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| CN201210215556.3A CN103509230B (en) | 2012-06-27 | 2012-06-27 | Be applied to the modified master of polyethylene film and preparation thereof, using method |
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| CN104231400A (en) * | 2014-09-24 | 2014-12-24 | 句容市给力包装制品厂 | Plastic packaging film and preparation method thereof |
| CN106496802B (en) * | 2015-09-07 | 2019-09-03 | 中国石油天然气股份有限公司 | A kind of high-density polyethylene resin for melt-blown composite fibre |
| CN111100347A (en) * | 2018-10-25 | 2020-05-05 | 中国石油化工股份有限公司 | High-pressure polyethylene resin composition for repackaging film and preparation method thereof |
| CN111100233B (en) * | 2018-10-25 | 2023-07-25 | 中国石油化工股份有限公司 | Synthetic method of high-pressure polyethylene for repackaging film |
| CN110577702A (en) * | 2019-09-30 | 2019-12-17 | 东华能源(宁波)新材料有限公司 | Transparent rigidity-toughness balanced thermoforming homo-polypropylene resin and preparation method and application thereof |
| CN112759814B (en) * | 2019-11-01 | 2022-09-20 | 中国石油化工股份有限公司 | Polyethylene film and preparation method thereof |
| CN114426726A (en) * | 2020-10-29 | 2022-05-03 | 中国石油化工股份有限公司 | Polyethylene material and preparation method and application thereof |
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| US6521685B1 (en) * | 2001-07-03 | 2003-02-18 | Milliken & Company | Clarifying agent formulations for thermoplastics exhibiting very high nucleation efficacy |
| CN101268131A (en) * | 2005-09-16 | 2008-09-17 | 美利肯公司 | Polymer compositions comprising nucleating or clarifying agents |
| US20070080485A1 (en) * | 2005-10-07 | 2007-04-12 | Kerscher Christopher S | Film and methods of making film |
| JP2008303270A (en) * | 2007-06-06 | 2008-12-18 | Sumitomo Chemical Co Ltd | Polypropylene resin composition and molded article therefrom |
| CN101531770B (en) * | 2008-05-15 | 2011-11-23 | 上海高分子功能材料研究所 | Preparation and application of open-cell foamed polyolefin |
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Non-Patent Citations (1)
| Title |
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| 聚乙烯成核剂研究及应用进展;白雪等;《中外能源》;20090519;第14卷(第4期);第64～70页 * |
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