CN109135013A - A kind of fluorine-containing processing masterbatch for High molecular weight polyethylene film - Google Patents
A kind of fluorine-containing processing masterbatch for High molecular weight polyethylene film Download PDFInfo
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- CN109135013A CN109135013A CN201810944385.5A CN201810944385A CN109135013A CN 109135013 A CN109135013 A CN 109135013A CN 201810944385 A CN201810944385 A CN 201810944385A CN 109135013 A CN109135013 A CN 109135013A
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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
- 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
- C08J2323/06—Polyethene
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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
- C08J2423/06—Polyethene
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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
- C08J2427/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
- C08J2427/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
- C08J2427/12—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C08J2427/20—Homopolymers or copolymers of hexafluoropropene
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- Chemical Kinetics & Catalysis (AREA)
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- Processes Of Treating Macromolecular Substances (AREA)
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Abstract
The present invention discloses a kind of fluorine-containing processing masterbatch for High molecular weight polyethylene film; the fluorine-containing processing masterbatch can improve the mobility of High molecular weight polyethylene; eliminate melt fracture phenomena; reduce crystal point and stain; improve that membrane material surface is smooth and flatness; accumulation in mouth model is reduced or eliminated, production efficiency is improved, reduces power consumption of polymer processing.Technical scheme is as follows: being matrix resin by additive, different polyethylene of fluorine-containing processing aid, preparation is used for the fluorine-containing processing masterbatch of high molecular polyolefine hole diaphragm.Its quality proportioning are as follows: polythylene resin 90% ~ 99%, fluorine-containing processing aid 1% ~ 10%.Preparation method: dry；Weighing；Mixing；Extruding pelletization.Fluorine-containing processing masterbatch produced by the present invention, can effectively eliminate the melt fracture phenomena of HMW-HDPE, UHMWPE, can improve HMW-HDPE, UHMWPE film surface is smooth and flatness, be conducive to the machine-shaping of film.
Description
Technical field
The invention belongs to technical field of polymer materials, and in particular to a kind of to add for the fluorine-containing of High molecular weight polyethylene film
Work masterbatch and preparation method thereof.
Background technique
High molecular weight polyethylene (High Molecular Weight Polyethylene, abbreviation HMWPE) includes high score
Sub- amount-high density polyethylene (HDPE) (High Molecular Weight High Density Polyethylene, abbreviation HMW-
HDPE) and ultra-high molecular weight polyethylene (Ultra High Molecular Weight Polyethylene, abbreviation UHMWPE),
Its relative molecular mass is all larger than common PE (relative molecular mass is typically only 20,000 ~ 300,000).Because relative molecular weight is huge, point
Subchain, which is largely tangled, makes HMWPE have excellent mechanical property, but there is also the defect for being difficult to fusion plastification, is unfavorable for membrane material
Preparation.On the other hand, HMWPE critical shear rate is lower, and when processing easily generates melt fracture, thus generate sharkskin and
The visual defects such as crystal point become the influence factor for restricting high-end PE membrane material development, therefore become the research hotspot of people.
And fluorine-containing processing aid (the Polymer Processing improved by fluoroelastomer and fluoroplastics
Additives, abbreviation PPA) it is a kind of novel processing aid, it is efficient, practical, high-quality, it is primarily used to high viscosity polyene
Hydrocarbon, to eliminate bath surface melting fracture.The main function effect of PPA improves production capacity, improves the low processability melted and refer to resin, mentions
The uniformity of high product performance widens resin process window, improves product surface glossiness and smoothness；Reduce or reduce resin
Usage amount, reduce melt fracture, reduce melt pressure, reduce die orifice buildup, reduce melt gel content, shorten product colour changing when
Between, the supply delay time in production is reduced, processing temperature is reduced, reduces resin decomposition, reduces energy consumption.
Currently, it is not popularized also for the fluorine-containing processing aid masterbatch of high-end polyethylene film, particularly for high-end polyethylene lithium
The dedicated processing aid masterbatch of battery diaphragm preparation is not yet seen in report, therefore the area research is gradually at hot spot.
Since fluorine-containing processing aid is mostly at powdered, when it is directly made an addition in polyvinyls, easily processed
Cheng Fasheng is difficult to the problems such as fine dispersion, dust pollution.Therefore, fluorine-containing processing aid is made into the form of masterbatch, is met efficiently
Using with environmental-friendly requirement.
Summary of the invention
Aiming at the problem that above-mentioned background technique, the purpose of the present invention is to provide a kind of for High molecular weight polyethylene film
Fluorine-containing processing masterbatch.Fluorine-containing processing masterbatch produced by the present invention, have good surface smoothness, can eliminate HMW-HDPE,
The melt fracture phenomena of UHMWPE, can improve HMW-HDPE, UHMWPE film surface is smooth and flatness, improve production capacity, reduce
Energy consumption is conducive to the machine-shaping of HMW-HDPE, UHMWPE film.
The purpose of the present invention is what is be achieved through the following technical solutions:
1, a kind of fluorine-containing processing masterbatch for High molecular weight polyethylene film, which is characterized in that matched by following weight percent
The component of ratio is made:
Polyethylene 90 ~ 99
Fluorine-containing processing aid (CHY-F2000) 1 ~ 10.
The polyethylene uses high density polyethylene (HD5401AA), by Shanghai match section petrochemical industry Limited Liability
Company provides, which has good machinability, and melt flow rate (MFR) (21.6 kg) is 9.5 g/10min, is suitble to use
In the container and the production of non-pressure pipe that contain the higher chemicals of activity.
The polyethylene uses LLDPE(LL0220KJ) or LDPE(2420H).
The fluorine-containing processing aid (CHY-F2000) is for the dedicated research and development material of polyethylene kind, extremely low additive amount (150
~ 600 ppm) physics itself that polyolefin resin, the processing performance in extrusion process can be improved, and will not influence resin
Performance will not influence bonding, printing and the heat sealability of product.
2. a kind of preparation method of polyethylene kind masterbatch material with fluoropolymer auxiliary agent of the present invention, special
Sign is, comprising the following steps:
A. it dries: will be dry under 40 °C in a vacuum drying oven of fluorine-containing processing aid (CHY-F2000), HDPE, evacuated state
8~12 h；
B. it weighs: being matched according to weight percent, fluorine processing aid (CHY-F2000), HDPE after weighing drying；
C. be blended: by each group after weighing be placed in high-speed kneading machine high speed mix 3 ~ 8 min, the high-speed mixer
Revolving speed is 300 ~ 3000 rpm；
D. it extruding pelletization: is sufficiently mixed uniform raw material by above-mentioned and puts into screw extruder, by 130 ~ 180 °C of height
Temperature heating melts intracavitary fusion plastification in high temperature screw rod and is that 30 ~ 300 rpm squeeze out raw material with revolving speed；From the original of Screw Extrusion
Material is cut into particle through cooling be sent into pelleter.
A kind of preparation method of fluorine-containing processing masterbatch for High molecular weight polyethylene film, which is characterized in that institute
The extruder stated is one of parallel dual-screw extruding machine, three-screw extruder.
A kind of fluorine-containing processing masterbatch and preparation method thereof for High molecular weight polyethylene film of the present invention can be applied
In the processing and forming field of high-end polyethylene film.It is mainly used in the mobility for improving such High molecular weight polyethylene film, is eliminated
Melt fracture sharkskin and water ripple phenomenon reduce crystal point and stain, improve that membrane material surface is smooth and flatness, reduce or eliminate
Accumulation in mouth model improves production efficiency, reduces power consumption of polymer processing.
Beneficial effects of the present invention: the present invention is to improve the mobility of High molecular weight polyethylene using fluorine-containing processing masterbatch,
Melt fracture (sharkskin and water ripples) phenomenon is eliminated, crystal point and stain are reduced, improves that membrane material surface is smooth and flatness, is reduced
Or accumulation in mouth model is eliminated, production efficiency is improved, power consumption of polymer processing is reduced.The present invention is using fluorine-containing processing aid as additive, with difference
Types of polyethylene material is matrix resin, and preparation is used for the fluorine-containing processing masterbatch of (super) high molecular polyolefine hole diaphragm.This hair
Bright fluorine-containing processing masterbatch obtained, has good surface smoothness, and the melt fracture that can eliminate HMW-HDPE, UHMWPE is existing
As, can improve HMW-HDPE, UHMWPE film surface is smooth and flatness, improve production capacity, reduce energy consumption, be conducive to the processing of film
Molding.
Specific embodiment
Son is described in further details the present invention combined with specific embodiments below, but this should not be interpreted as of the invention
Range is only limitted to following instance.
High density polyethylene used in the embodiment of the present invention (HD5401AA) LLDPE(LL0220KJ) is matched by Shanghai
Petrochemical industry Co., Ltd of section provides, LDPE(2420H) it is provided by Yangtze petrochemical industry-BASF Co., Ltd, it should
HDPE(HD5401AA) has good machinability, melt flow rate (MFR) (21.6 kg) is 9.5 g/10min；It is height
Molecular weight polyethylene (High Molecular Weight Polyethylene, abbreviation HMWPE) includes high molecular weight-high density
Polyethylene (High Molecular Weight High Density Polyethylene, abbreviation HMW-HDPE) and superelevation point
Sub- weight northylen (Ultra High Molecular Weight Polyethylene, abbreviation UHMWPE), average molecular matter
Amount is all larger than common PE (relative molecular mass is typically only 20,000 ~ 300,000).
Fluoropolymer auxiliary agent PPA (CHY-F2000), is specific to polyvinyls used in the embodiment of the present invention
Research and development, extremely low additive amount (150 ~ 600 ppm) can improve polyolefin resin, the processing performance in extrusion process.And
And the physical property that will not influence resin itself, bonding, printing and the heat sealability of product will not be influenced.
Embodiment 1
A kind of fluorine-containing processing masterbatch for High molecular weight polyethylene film, using following methods:
1, a kind of fluorine-containing processing masterbatch for High molecular weight polyethylene film, which is characterized in that according to percentage of weight formula:
HDPE(HD5401AA) 90
PPA(CHY-F2000) 10.
2, a kind of preparation method of the fluorine-containing processing masterbatch for High molecular weight polyethylene film, includes the following steps:
A. it dries: PPA(CHY-F2000) micro mist, HDPE is dried into 8 h in drying box；
B. it weighs: being matched according to weight percent, the micro mist, HDPE containing PPA(CHY-F2000) after weighing drying；
C. be blended: by each group after weighing be placed in high-speed kneading machine high speed mix 5 min, the revolving speed of the high-speed mixer
For 2500 rpm；
D. extruding pelletization: being sufficiently mixed above-mentioned uniform raw material and put into screw extruder, by 170 °C of high-temperature heating,
Intracavitary fusion plastification is melted in high temperature screw rod and is that 230 rpm squeeze out raw material with revolving speed；It is sent into from the raw material of Screw Extrusion through cooling
Particle is cut into pelleter.
Embodiment 2
A kind of fluorine-containing processing masterbatch for High molecular weight polyethylene film, using following methods:
1, a kind of fluorine-containing processing masterbatch for High molecular weight polyethylene film, it is characterised in that: according to percentage of weight formula:
LLDPE(LL0220KJ) 90
PPA(CHY-F2000) 10.
2, a kind of preparation method of the fluorine-containing processing masterbatch for High molecular weight polyethylene film, includes the following steps:
A. it dries: PPA(CHY-F2000) micro mist, LLDPE is dried into 9 h in drying box；
B. it weighs: being matched according to weight percent, the PPA(CHY-F2000 after weighing drying) micro mist, LLDPE；
C. be blended: by each group after weighing be placed in high-speed kneading machine high speed mix 8 min, the revolving speed of the high-speed mixer
For 2500 rpm；
D. extruding pelletization: being sufficiently mixed above-mentioned uniform raw material and put into screw extruder, by 115 °C of high-temperature heating,
Intracavitary fusion plastification is melted in high temperature screw rod and is that 240 rpm squeeze out raw material with revolving speed；It is sent into from the raw material of Screw Extrusion through cooling
Particle is cut into pelleter.
Embodiment 3
A kind of fluorine-containing processing masterbatch for High molecular weight polyethylene film, using following methods:
1, a kind of fluorine-containing processing masterbatch for High molecular weight polyethylene film, which is characterized in that according to percentage of weight formula:
LDPE(2420H) 95
PPA(CHY-F2000) 5.
2, a kind of preparation method of the fluorine-containing processing masterbatch for High molecular weight polyethylene film, includes the following steps:
A is dry: dry 10 h in drying box by PPA(CHY-F2000) micro mist, LDPE；
B. it weighs: being matched according to weight percent, the PPA(CHY-F2000 after weighing drying) micro mist, LDPE；
C. be blended: by each group after weighing be placed in high-speed kneading machine high speed mix 6 min, the revolving speed of the high-speed mixer
For 2300 rpm；
D. extruding pelletization: being sufficiently mixed above-mentioned uniform raw material and put into screw extruder, by 125 °C of high-temperature heating,
Intracavitary fusion plastification is melted in high temperature screw rod and is that 220 rpm squeeze out raw material with revolving speed；It is sent into from the raw material of Screw Extrusion through cooling
Particle is cut into pelleter.
Embodiment 4
A kind of fluorine-containing processing masterbatch for High molecular weight polyethylene film, using following methods:
1, a kind of fluorine-containing processing masterbatch for High molecular weight polyethylene film, which is characterized in that according to percentage of weight formula:
HDPE(HD5401AA) 97
PPA(CHY-F2000) 3.
2, a kind of preparation method of the fluorine-containing processing masterbatch for High molecular weight polyethylene film, includes the following steps:
A. it dries: PPA(CHY-F2000) micro mist, HDPE is dried into 8 h in drying box；
B. it weighs: being matched according to weight percent, the PPA(CHY-F2000 after weighing drying) micro mist, HDPE；
C. be blended: by each group after weighing be placed in high-speed kneading machine high speed mix 5 min, the revolving speed of the high-speed mixer
For 2500 rpm；
D. extruding pelletization: being sufficiently mixed above-mentioned uniform raw material and put into screw extruder, by 110 °C of high-temperature heating,
Intracavitary fusion plastification is melted in high temperature screw rod and is that 225 rpm squeeze out raw material with revolving speed；It is sent into from the raw material of Screw Extrusion through cooling
Particle is cut into pelleter.
Embodiment 5
A kind of fluorine-containing processing masterbatch for High molecular weight polyethylene film, using following methods:
1, a kind of fluorine-containing processing masterbatch for High molecular weight polyethylene film, which is characterized in that according to percentage of weight formula:
LLDPE(LL0220KJ) 96
PPA(CHY-F2000) 4.
2, a kind of preparation method of the fluorine-containing processing masterbatch for High molecular weight polyethylene film, includes the following steps:
A. it dries: PPA(CHY-F2000) micro mist, LLDPE is dried into 8 h in drying box；
B. it weighs: being matched according to weight percent, the PPA(CHY-F2000 after weighing drying) micro mist, LLDPE；
C. be blended: by each group after weighing be placed in high-speed kneading machine high speed mix 5 min, the revolving speed of the high-speed mixer
For 2500 rpm；
D. extruding pelletization: being sufficiently mixed above-mentioned uniform raw material and put into screw extruder, by 120 °C of high-temperature heating,
Intracavitary fusion plastification is melted in high temperature screw rod and is that 225 rpm squeeze out raw material with revolving speed；It is sent into from the raw material of Screw Extrusion through cooling
Particle is cut into pelleter.
Embodiment 6
A kind of fluorine-containing processing masterbatch for High molecular weight polyethylene film, using following methods:
1, a kind of fluorine-containing processing masterbatch for High molecular weight polyethylene film, which is characterized in that according to percentage of weight formula:
LDPE(2420H) 96
PPA(CHY-F2000) 4.
2, a kind of preparation method of the fluorine-containing processing masterbatch for High molecular weight polyethylene film, includes the following steps:
A. it dries: PPA(CHY-F2000) micro mist, LDPE is dried into 8 h in drying box；
B. it weighs: being matched according to weight percent, the PPA(CHY-F2000 after weighing drying) micro mist, LDPE；
C. be blended: by each group after weighing be placed in high-speed kneading machine high speed mix 5 min, the revolving speed of the high-speed mixer
For 2500 rpm；
D. extruding pelletization: being sufficiently mixed above-mentioned uniform raw material and put into screw extruder, by 130 °C of high-temperature heating,
Intracavitary fusion plastification is melted in high temperature screw rod and is that 225 rpm squeeze out raw material with revolving speed；It is sent into from the raw material of Screw Extrusion through cooling
Particle is cut into pelleter.
Claims (8)
1. a kind of fluorine-containing processing masterbatch for High molecular weight polyethylene film, which is characterized in that matched by following weight percent
The component of ratio is made:
Polyethylene 90 ~ 99
Fluorine-containing processing aid 1 ~ 10.
2. a kind of fluorine-containing processing masterbatch for High molecular weight polyethylene film according to claim 1, which is characterized in that institute
Polyethylene is stated using high density polyethylene, is produced and is provided by Shanghai Secco Petrochemical Co., Ltd., raw material tool
Standby good machinability, 21.6 kg of melt flow rate (MFR) are 9.5 g/10min.
3. a kind of fluorine-containing processing masterbatch for High molecular weight polyethylene film according to claim 1, which is characterized in that institute
Polyethylene is stated using LLDPE or LDPE.
4. a kind of fluorine-containing processing masterbatch for High molecular weight polyethylene film according to claim 1 or 2 or 3, feature
It is, contained fluorine-containing processing aid is the dedicated research and development material of polyethylene kind, and main component includes polytetrafluoroethylene (PTFE), tetrafluoroethene-
Hexafluoropropene-vinylidene fluoride copolymers, vinylidene-hexafluoroethylene copolymer, ethylene-tetrafluoroethylene copolymer, ethylene-tetrafluoro
Vinyl-vinyl ether copolymer and their compounding hybrid, extremely low 150 ~ 600 ppm of additive amount can improve polyolefins
Resin, the processing performance in extrusion process, and the physical property that will not influence resin itself, will not influence the viscous of product
Knot, printing and heat sealability.
5. a kind of fluorine-containing processing masterbatch for High molecular weight polyethylene film according to any one of claims 1 to 4, special
Sign is, can be directly appended in HMW-HDPE, UHMWPE, improves the mobility of such High molecular weight polyethylene film, eliminates molten
Body ruptures sharkskin and water ripple phenomenon, reduces crystal point and stain, improves that membrane material surface is smooth and flatness, reduces or eliminates mouth
Mould buildup improves production efficiency, reduces power consumption of polymer processing.
6. a kind of preparation method of any fluorine-containing processing masterbatch for High molecular weight polyethylene film of claim 1 to 5,
Characterized by comprising the following steps:
A. it dries: by 8 ~ 12 h dry under 40 °C in a vacuum drying oven of fluorine-containing processing aid, HDPE, evacuated state；
B. it weighs: being matched according to weight percent, fluorine processing aid, HDPE after weighing drying；
C. be blended: by each group after weighing be placed in high-speed kneading machine high speed mix 3 ~ 8 min, the high-speed mixer
Revolving speed is 300 ~ 3000 rpm；
D. it extruding pelletization: is sufficiently mixed uniform raw material by above-mentioned and puts into screw extruder, by 130 ~ 180 °C of height
Temperature heating melts intracavitary fusion plastification in high temperature screw rod and is that 30 ~ 300 rpm squeeze out raw material with revolving speed；From the original of Screw Extrusion
Material is cut into particle through cooling be sent into pelleter.
7. a kind of preparation method of fluorine-containing processing masterbatch for High molecular weight polyethylene film according to claim 6,
It is characterized in that, the screw extruder is single screw extrusion machine, parallel dual-screw extruding machine, one in three-screw extruder
Kind.
8. a kind of application of fluorine-containing processing masterbatch for High molecular weight polyethylene film described in any one of claim 1 to 5,
It is characterized in that, applied to the mobility for improving such High molecular weight polyethylene film, eliminates melt fracture sharkskin and water ripples are existing
As reducing crystal point and stain, improving that membrane material surface is smooth and flatness, reduce or eliminate accumulation in mouth model, improve production efficiency, drop
Low power consumption of polymer processing.
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| CN201810944385.5A CN109135013A (en) | 2018-08-19 | 2018-08-19 | A kind of fluorine-containing processing masterbatch for High molecular weight polyethylene film |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112812408A (en) * | 2021-01-25 | 2021-05-18 | 吉林省悦顺塑料包装有限公司 | Polyolefine rheological master batch-PPA and preparation method thereof |
| CN112920555A (en) * | 2021-03-01 | 2021-06-08 | 宁波市青湖弹性体科技有限公司 | TPEE composite material suitable for high-speed extrusion and preparation method thereof |
| CN114644805A (en) * | 2021-04-20 | 2022-06-21 | 上海齐润新材料有限公司 | Fluorine-containing auxiliary agent and product thereof |
| CN117586572A (en) * | 2024-01-16 | 2024-02-23 | 新疆独山子石油化工有限公司 | Low-yellow-index metallocene polyethylene and preparation method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112812408A (en) * | 2021-01-25 | 2021-05-18 | 吉林省悦顺塑料包装有限公司 | Polyolefine rheological master batch-PPA and preparation method thereof |
| CN112920555A (en) * | 2021-03-01 | 2021-06-08 | 宁波市青湖弹性体科技有限公司 | TPEE composite material suitable for high-speed extrusion and preparation method thereof |
| CN114644805A (en) * | 2021-04-20 | 2022-06-21 | 上海齐润新材料有限公司 | Fluorine-containing auxiliary agent and product thereof |
| CN117586572A (en) * | 2024-01-16 | 2024-02-23 | 新疆独山子石油化工有限公司 | Low-yellow-index metallocene polyethylene and preparation method thereof |
| CN117586572B (en) * | 2024-01-16 | 2024-04-16 | 新疆独山子石油化工有限公司 | Low-yellow-index metallocene polyethylene and preparation method thereof |
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