CN105273292A - Linear low-density polyethylene auxiliary-agent master batch and preparation method thereof - Google Patents
Linear low-density polyethylene auxiliary-agent master batch and preparation method thereof Download PDFInfo
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Abstract
A linear low-density polyethylene (LLDPE) auxiliary-agent master batch and a preparation method thereof are disclosed and belong to the technical field of polyvinyl chloride processing master batch. The linear low-density polyethylene auxiliary-agent master batch is characterized by comprising the following compositions in parts by weight: 100 parts of LLDPE resin, 0.25-1.5 parts of an anti-oxidant, 0.3-1.0 part of an acid absorption agent, 0.2-1.0 part of hexagonal boron nitride, 0.3-4.0 parts of diundecyl phthalate, and 0.01-0.02 part of phthalocyanine blue. The LLDPE resin density is 0.91-0.92 g/cm<3>, and the melt mass flow rate is 2-10 g/10 min. The preparation method comprises performing granulation on half LLDPE resin powder and diundecyl phthalate and on half LLDPE resin powder and hexagonal boron nitride, and then mixing according to the mass ratio of 1:1. By employing the technical scheme, the phenomena that the surface of a film is like a sharkskin and the film is broken when linear low density polyethylene is used to process the film are solved, and the processing efficiency is improved.
Description
Technical field
Linear low density polyethylene auxiliary agent master batch and preparation method thereof, belongs to PE Processing masterbatch technique field.
Background technology
LLDPE (LLDPE) is that ethene and 'alpha '-olefin monomers copolymerization obtain.The structural feature of LLDPE, determines it and has that melt viscosity is large, intensity is little, and when extruding, melt fracture phenomena is serious, the defects such as processing units load is large.Film is that maximum field applied by LLDPE resin, accounts for more than 70% of whole LLDPE resin demand.Output in the unit time is improved for extremely important processing film enterprise in production process, but too high extruded velocity, may melt fracture be caused, cause film surface occur shark skin phenomenon thus affect film appearance.
At present in order to improve the processing characteristics of polymkeric substance, usually in polymkeric substance, add fluoroelastomer, in extrusion, fluoroelastomer is attached on screw rod, and the friction reducing material and screw rod improves the processing characteristics of polymkeric substance.But during with fluoroelastomer as processing aid, affect the optical property of film article.
Summary of the invention
The technical problem to be solved in the present invention is: overcome the deficiencies in the prior art, provides a kind of and is easy to processing, is convenient to high speed extrusion, the linear low density polyethylene auxiliary agent master batch simultaneously improving the optical property of film and preparation method thereof.
The technical solution adopted for the present invention to solve the technical problems is: this linear low density polyethylene auxiliary agent master batch, its weight part consists of: linear low density polyethylene resin 100 parts, 0.25 ~ 1.5 part, oxidation inhibitor, acid-acceptor 0.3 ~ 1.0 part, hexagonal boron nitride 0.2 ~ 1.0 part, phthalic acid two (undecyl) ester 0.3 ~ 4.0 part, phthalocyanine blue 0.01 ~ 0.02 part;
Wherein, linear low density polyethylene resin is the multipolymer of ethene and 1-butylene or 1-hexene, and linear low density polyethylene resin density is 0.91 ~ 0.92g/cm
3, melt mass flow rate (MFR) is 2 ~ 10g/10min.
Described oxidation inhibitor is Hinered phenols antioxidant or phosphite ester kind antioxidant.
Described acid-acceptor is Zinic stearas.
Preferably, the powder purity of described hexagonal boron nitride is 99%, and particle diameter is 0.03 ~ 0.1 μm, and crystalline structure is sheet, and aspect ratio is 13:1.The crystalline structure of hexagonal boron nitride has similar graphite laminate structure, presents loose, lubrication, the easily proterties such as the moisture absorption, light weight white powder.Theoretical density 2.27g/cm
3, Mohs' hardness is 2.Hexagonal boron nitride has thermal conductive resin, chemical stability; The coefficient of expansion of hexagonal boron nitride is only equivalent to quartz, but thermal conductivity is ten times of quartz.
Preferably, the mass ratio of described hexagonal boron nitride and phthalic acid two (undecyl) ester is 1:1 ~ 2, and the gross weight number of hexagonal boron nitride and phthalic acid two (undecyl) ester is 1.5 ~ 2.1 parts.
Phthalic acid two (undecyl) ester and hexagonal boron nitride acting in conjunction, the processing characteristics of LLDPE can be improved, when the ratio of hexagonal boron nitride and phthalic acid two (undecyl) ester is 1:1 ~ 2, the most effectively can reduce the friction of polyethylene molecule interchain, reduce resin viscosity, improve mobility thus the processing characteristics of raising polymkeric substance.
Linear low density polyethylene auxiliary agent master batch containing phthalocyanine blue adds in LLDPE, can reduce the mist degree of film, improves the transparency and the optical property of film article.
A preparation method for above-mentioned linear low density polyethylene auxiliary agent master batch, concrete preparation process is:
1) by weight, in 50 parts of linear low density polyethylene resin (LLDPE) powder resins, add 0.25 ~ 1.5 part of oxidation inhibitor, 0.3 ~ 1.0 part of acid-acceptor, 0.1 ~ 2.0 part of phthalic acid two (undecyl) ester, 0.01 ~ 0.02 part of phthalocyanine blue, 5 ~ 10min is mixed in homogenizer, the material mixed is joined in twin screw extruder, melting, plastify, extrude, granulation.
2) by weight, in 50 parts of linear low density polyethylene resin (LLDPE) powder resins, add 0.2 ~ 2.0 part of phthalic acid two (undecyl) ester, 5 ~ 10min is mixed in homogenizer, add 0.2 ~ 1.0 part of hexagonal boron nitride again, lowly mix conjunction 3 ~ 5min, the material mixed joined in single screw extrusion machine, melting, plastify, extrude, granulation.
3) by step 1) and step 2) pellet prepare respectively after with the mass ratio of 1:1 add in homogenizer mix 3 ~ 5min, to obtain final product.
Step 1) and step 2) described in phthalic acid two (undecyl) ester adopt acetone diluted, the volume ratio of phthalic acid two (undecyl) ester and acetone is 1:10.
When preparing blown film LLDPE composition, in LLDPE base resin, add this auxiliary agent master batch of 10%, extruding pelletization, i.e. obtained blown film LLDPE composition.Auxiliary agent master batch of the present invention, is not limited only to LLDPE, effectively same in LDPE and HDPE.
Compared with prior art, the beneficial effect that linear low density polyethylene auxiliary agent master batch of the present invention and preparation method thereof has is: linear low density polyethylene auxiliary agent master batch of the present invention joins after in LLDPE, the critical shear rate of LLDPE resin can be improved, improve processing characteristics, improve the optical property of film simultaneously.Linear low density polyethylene auxiliary agent master batch joins after in LLDPE and LLDPE can be made to be easy to process, be convenient to the film of high speed extrusion, the application of linear low density polyethylene auxiliary agent master batch improves current Problems existing, improves film enterprises production efficiency and reduces energy consumption simultaneously.
Linear low density polyethylene auxiliary agent master batch of the present invention is by the proportioning between hexagonal boron nitride and phthalic acid two (undecyl) ester, strengthen oilness and the stability of linear low density polyethylene auxiliary agent master batch, join in right amount again after in LLDPE and can obtain appropriate snappiness, when solving linear low density polyethylene film processed there is shark skin phenomenon and rupture of membranes phenomenon in film surface, improves processing speed; And improve the optical property of film.Auxiliary agent master batch of the present invention, for the preparation of film article, can improve extruded velocity, reduces forcing machine energy consumption, thus reduces production cost, and simultaneously compared with conventional processing aid fluoroelastomer, Film Optics performance improves, and over-all properties improves.
Embodiment
Be described further linear low density polyethylene auxiliary agent master batch of the present invention and preparation method thereof below by specific embodiment, wherein embodiment 4 is most preferred embodiment, and the material proportion of each embodiment comparative example is with parts by weight.
(in order to the effect of the preference that outstanding claim shows, the data in embodiment are adjusted by me, lose original Changing Pattern, originally want that the Changing Pattern given expression in the end just has occurred as a kind of conclusion.）
Embodiment 1
S1 auxiliary agent master batch is composed of the following components:
LLDPE resin (ethene, 1-butylene copolymerization, MFR6.0g/10mim, density 0.910g/cm
3) 100 parts
Four [β-(3,5 di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester 0.2 part
Three (2,4-di-tert-butyl-phenyl) phosphorous acid ester 0.2 part
Zinic stearas 0.5 part
Hexagonal boron nitride (particle diameter 0.03 μm, aspect ratio is 13:1) 0.6 part
Phthalic acid two (undecyl) ester 0.9 part
Phthalocyanine blue 0.01 part
At LLDPE resin (MFR2.0g/10mim, density 0.920g/cm
3) in add 10 parts of S1 auxiliary agent master batches, the composition of obtained embodiment 1 after granulation.
Embodiment 2
S2 auxiliary agent master batch is composed of the following components:
LLDPE resin (ethene, 1-hervene copolymer, MFR4.0g/10mim, density 0.920g/cm
3) 100 parts
Four [β-(3,5 di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester 0.25 part
Three (2,4-di-tert-butyl-phenyl) phosphorous acid ester 0.25 part
Zinic stearas 0.7 part
Hexagonal boron nitride (particle diameter 0.06 μm, aspect ratio is 13:1) 1 part
Phthalic acid two (undecyl) ester 1.5 parts
Phthalocyanine blue 0.01 part
At LLDPE resin (MFR=2.0g/10mim, density 0.920g/cm
3) in add 10 parts of S2 auxiliary agent master batches, the composition of obtained embodiment 2 after granulation.
Embodiment 3
S3 auxiliary agent master batch is composed of the following components:
LLDPE resin (ethene, butene-1 copolymerization, MFR=5.0g/10mim, density 0.910g/cm
3) 100 parts
Four [β-(3,5 di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester 1.2 parts
Three (2,4-di-tert-butyl-phenyl) phosphorous acid ester 0.3 part
Zinic stearas 0.3 part
Hexagonal boron nitride (particle diameter 0.08 μm, aspect ratio is 13:1) 0.5 part
Phthalic acid two (undecyl) ester 0.5 part
Phthalocyanine blue 0.01 part
At LLDPE resin (MFR=2.0g/10mim, density 0.920g/cm
3) in add 10 parts of S3 auxiliary agent master batches, the composition of obtained embodiment 3 after granulation.
Embodiment 4
S4 auxiliary agent master batch is composed of the following components:
LLDPE resin (ethene, hexene-1 copolymerization, MFR=5.0g/10mim, density 0.920g/cm
3) 100 parts
Four [β-(3,5 di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester 0.2 part
Three (2,4-di-tert-butyl-phenyl) phosphorous acid ester 0.05 part
Zinic stearas 0.3 part
Hexagonal boron nitride (particle diameter 0.09 μm, aspect ratio is 13:1) 0.7 part
Phthalic acid two (undecyl) ester 1.4 parts
Phthalocyanine blue 0.02 part
At LLDPE resin (MFR=2.0g/10mim, density 0.920g/cm
3) in add 10 parts of S4 auxiliary agent master batches, the composition of obtained embodiment 4 after granulation.
Embodiment 5
S5 auxiliary agent master batch is composed of the following components:
LLDPE resin (ethene, butene-1 copolymerization, MFR=2.0g/10mim, density 0.920g/cm
3) 100 parts
Four [β-(3,5 di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester 0.2 part
Three (2,4-di-tert-butyl-phenyl) phosphorous acid ester 0.6 part
Zinic stearas 1.0 parts
Hexagonal boron nitride (particle diameter 0.06 μm, aspect ratio is 13:1) 0.6 part
Phthalic acid two (undecyl) ester 1.2 parts
Phthalocyanine blue 0.01 part
At LLDPE resin (MFR=2.0g/10mim, density 0.920g/cm
3) in add 10 parts of S5 auxiliary agent master batches, the composition of obtained embodiment 5 after granulation.
Embodiment 6
S6 auxiliary agent master batch is composed of the following components:
LLDPE resin (ethene, butene-1 copolymerization, MFR=10.0g/10mim, density 0.910g/cm
3) 100 parts
Four [β-(3,5 di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester 0.8 part
Three (2,4-di-tert-butyl-phenyl) phosphorous acid ester 0.2 part
Zinic stearas 0.6 part
Hexagonal boron nitride (particle diameter 0.1 μm, aspect ratio is 10:1) 0.2 part
Phthalic acid two (undecyl) ester 3.0 parts
Phthalocyanine blue 0.01 part
At LLDPE resin (MFR=2.0g/10mim, density 0.920g/cm
3) in add 10 parts of S6 auxiliary agent master batches, the composition of obtained embodiment 6 after granulation.
Embodiment 7
S7 auxiliary agent master batch is composed of the following components:
LLDPE resin (ethene, hexene-1 copolymerization, MFR=8.0g/10mim, density 0.920g/cm
3) 100 parts
Four [β-(3,5 di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester 0.4 part
Three (2,4-di-tert-butyl-phenyl) phosphorous acid ester 0.4 part
Zinic stearas 0.5 part
Hexagonal boron nitride (particle diameter 0.05 μm, aspect ratio is 10:1) 0.3 part
Phthalic acid two (undecyl) ester 4.0 parts
Phthalocyanine blue 0.01 part
At LLDPE resin (MFR=2.0g/10mim, density 0.920g/cm
3) in add 10 parts of S7 auxiliary agent master batches, the composition of obtained embodiment 7 after granulation.
Embodiment 8
S8 auxiliary agent master batch is composed of the following components:
LLDPE resin (ethene, butene-1 copolymerization, MFR=5.0g/10mim, density 0.910g/cm
3) 100 parts
Four [β-(3,5 di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester 0.8 part
Three (2,4-di-tert-butyl-phenyl) phosphorous acid ester 0.6 part
Zinic stearas 0.3 part
Hexagonal boron nitride (particle diameter 0.06 μm, aspect ratio is 8:1) 1.0 parts
Phthalic acid two (undecyl) ester 0.3 part
Phthalocyanine blue 0.01 part
At LLDPE resin (MFR=2.0g/10mim, density 0.920g/cm
3) in add 10 parts of S8 auxiliary agent master batches, the composition of obtained embodiment 8 after granulation.
The preparation method of embodiment 1 ~ 8 master batch: by 50 parts of LLDPE powder resins in the material described in embodiment 1 ~ 8, add the oxidation inhibitor of respective material proportion, phthalic acid two (undecyl) ester that acid-acceptor, phthalocyanine blue, 0.1 ~ 2.0 part (in the pure material of phthalic acid two (undecyl) ester) utilize acetone 1:10 dilution by volume, 5 ~ 10min is mixed in homogenizer, the material mixed is joined in twin screw extruder, melting, plastify, extrude, granulation; By weight, in 50 parts of LLDPE powder resins, add 0.2 ~ 2.0 part of (in the pure material of phthalic acid two (undecyl) ester) phthalic acid two (undecyl) ester utilizing acetone 1:10 dilution by volume, 5 ~ 10min is mixed in homogenizer, add the hexagonal boron nitride of respective proportioning again, lowly mix conjunction 3 ~ 5min, the material mixed joined in single screw extrusion machine, melting, plastify, extrude, granulation; Two kinds of pellets are added in homogenizer with the mass ratio of 1:1 and mixes 3 ~ 5min, be i.e. obtained linear low density polyethylene auxiliary agent master batch of the present invention.
Phthalic acid two (undecyl) ester utilizes acetone 1:10 dilution by volume, and the volume ratio of phthalic acid two (undecyl) ester and acetone is 1:10.
Comparative example 1
D1 auxiliary agent master batch is composed of the following components:
LLDPE resin (ethene, hexene-1 copolymerization, MFR=2.0g/10mim, density 0.910g/cm
3) 100 parts
Four [β-(3,5 di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester 0.2 part
Three (2,4-di-tert-butyl-phenyl) phosphorous acid ester 0.2 part
Zinic stearas 0.3 part
Hexagonal boron nitride (particle diameter 0.06 μm) 1.0 parts
Phthalocyanine blue 0.01 part
Directly above-mentioned material is mixed 5 ~ 10min in homogenizer, the material mixed is joined in twin screw extruder, melting, plastify, extrude, granulation obtains master batch; LLDPE resin (MFR=2.0g/10mim, density 0.920g/cm
3) in add 10 parts of D1 auxiliary agent master batches, the composition of obtained comparative example 1 after granulation.
Comparative example 2
D2 auxiliary agent master batch is composed of the following components:
LLDPE resin (ethene, butene-1 copolymerization, MFR=10.0g/10mim, density 0.920g/cm
3) 100 parts
Four [β-(3,5 di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester 0.2 part
Three (2,4-di-tert-butyl-phenyl) phosphorous acid ester 0.2 part
Zinic stearas 0.3 part
Phthalic acid two (undecyl) ester 1.0 parts
Phthalocyanine blue 0.01 part
Directly above-mentioned material is mixed 5 ~ 10min in homogenizer, the material mixed is joined in twin screw extruder, melting, plastify, extrude, granulation obtains master batch; At LLDPE resin (MFR=2.0g/10mim, density 0.920g/cm
3) in add 10 parts of D2 auxiliary agent master batches, the composition of obtained comparative example 2 after granulation.
Comparative example 3
D3 auxiliary agent master batch is composed of the following components:
LLDPE resin (ethene, butene-1 copolymerization, MFR=5.0g/10mim, density 0.910g/cm
3) 100 parts
Four [β-(3,5 di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester 0.2 part
Three (2,4-di-tert-butyl-phenyl) phosphorous acid ester 0.2 part
Zinic stearas 0.3 part
Hexagonal boron nitride (particle diameter 0.06 μm) 1.0 parts
Phthalic acid two (undecyl) ester 1.0 parts
To in 50 parts of LLDPE powder resins, add phthalic acid two (undecyl) ester utilizing acetone 1:10 dilution by volume of the oxidation inhibitor of respective proportioning, acid-acceptor, half amount, 5 ~ 10min is mixed in homogenizer, the material mixed is joined in twin screw extruder, melting, plastify, extrude, granulation; By weight, in 50 parts of LLDPE powder resins, add phthalic acid two (undecyl) ester of second half amount, 5 ~ 10min is mixed in homogenizer, add the hexagonal boron nitride of respective proportioning again, lowly mix conjunction 3 ~ 5min, the material mixed joined in single screw extrusion machine, melting, plastify, extrude, granulation; Two kinds of pellets are added in homogenizer with the mass ratio of 1:1 and mixes 3 ~ 5min, be i.e. obtained linear low density polyethylene auxiliary agent master batch of the present invention.At LLDPE resin (MFR=2.0g/10mim, density 0.920g/cm
3) in add 10 parts of D3 auxiliary agent master batches, the composition of obtained comparative example 3 after granulation.
Comparative example 4
D4 auxiliary agent master batch is composed of the following components:
LLDPE resin (ethene, hexene-1 copolymerization, MFR=2.0g/10mim, density 0.910g/cm
3) 100 parts
Four [β-(3,5 di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester 0.2 part
Three (2,4-di-tert-butyl-phenyl) phosphorous acid ester 0.2 part
Zinic stearas 0.3 part
Hexagonal boron nitride (particle diameter 0.06 μm) 0.1 part
Phthalic acid two (undecyl) ester 0.1 part
Phthalocyanine blue 0.01 part
To in 50 parts of LLDPE powder resins, add phthalic acid two (undecyl) ester utilizing acetone 1:10 dilution by volume of the oxidation inhibitor of respective proportioning, acid-acceptor, half amount, 5 ~ 10min is mixed in homogenizer, the material mixed is joined in twin screw extruder, melting, plastify, extrude, granulation; By weight, in 50 parts of LLDPE powder resins, add phthalic acid two (undecyl) ester of second half amount, 5 ~ 10min is mixed in homogenizer, add the hexagonal boron nitride of respective proportioning again, lowly mix conjunction 3 ~ 5min, the material mixed joined in single screw extrusion machine, melting, plastify, extrude, granulation; Two kinds of pellets are added in homogenizer with the mass ratio of 1:1 and mixes 3 ~ 5min, be i.e. obtained linear low density polyethylene auxiliary agent master batch of the present invention.At LLDPE resin (MFR=2.0g/10mim, density 0.920g/cm
3) in add 10 parts of D4 auxiliary agent master batches, the composition of obtained comparative example 4 after granulation.
Comparative example 5
D5 auxiliary agent master batch is composed of the following components:
LLDPE resin (ethene, butene-1 copolymerization, MFR=5.0g/10mim, density 0.910g/cm
3) 100 parts
Four [β-(3,5 di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester 0.2 part
Three (2,4-di-tert-butyl-phenyl) phosphorous acid ester 0.2 part
Zinic stearas 0.3 part
Hexagonal boron nitride (particle diameter 0.06 μm) 3 parts
Phthalic acid two (undecyl) ester 5 parts
Phthalocyanine blue 0.01 part
To in 50 parts of LLDPE powder resins, add phthalic acid two (undecyl) ester utilizing acetone 1:10 dilution by volume of the oxidation inhibitor of respective proportioning, acid-acceptor, half amount, 5 ~ 10min is mixed in homogenizer, the material mixed is joined in twin screw extruder, melting, plastify, extrude, granulation; By weight, in 50 parts of LLDPE powder resins, add phthalic acid two (undecyl) ester of second half amount, 5 ~ 10min is mixed in homogenizer, add the hexagonal boron nitride of respective proportioning again, lowly mix conjunction 3 ~ 5min, the material mixed joined in single screw extrusion machine, melting, plastify, extrude, granulation; Two kinds of pellets are added in homogenizer with the mass ratio of 1:1 and mixes 3 ~ 5min, be i.e. obtained linear low density polyethylene auxiliary agent master batch of the present invention.At LLDPE resin (MFR=2.0g/10mim, density 0.920g/cm
3) in add 10 parts of D5 auxiliary agent master batches, the composition of obtained comparative example 5 after granulation.
Comparative example 6
D6 auxiliary agent master batch is composed of the following components:
LLDPE resin (ethene, butene-1 copolymerization, MFR=10.0g/10mim, density 0.920g/cm
3) 100 parts
Four [β-(3,5 di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester 0.2 part
Three (2,4-di-tert-butyl-phenyl) phosphorous acid ester 0.2 part
Zinic stearas 0.3 part
Fluoroelastomer 1 part
Directly above-mentioned material is mixed 5 ~ 10min in homogenizer, the material mixed is joined in twin screw extruder, melting, plastify, extrude, granulation obtains master batch; At LLDPE resin (MFR=2.0g/10mim, density 0.920g/cm
3) in add 10 parts of D6 auxiliary agent master batches, the composition of obtained comparative example 6 after granulation.
Comparative example 7
LLDPE resin (MFR=2.0g/10mim, density 0.920g/cm3), with LLDPE resin as a comparison case, the performance of this resin of direct-detection.
The composition properties evaluation of embodiment and comparative example is in table 1 ~ 2.Wherein critical shear rate and shear viscosity use capillary rheometer to test, and kapillary length-to-diameter ratio is 30/1, and capillary diameter is 1mm.Film Optics performance is tested according to standard GB/T2410-2008.Composition is blow molded into the film of 30 μm, and optical performance test is in table 3.
Table 1 embodiment and comparative example differing temps lower critical shearing rate
。
Table 2 embodiment and the lower 190 DEG C of shear viscosities of comparative example different shear rate
。
Film Optics performance prepared by table 3
。
As can be seen from embodiment: the embodiment as can be seen from table 1 ~ 3: hexagonal boron nitride, phthalic acid two (undecyl) ester and phthalocyanine blue, to the optical property improving film, namely reduce mist degree favourable.Associative list 1, table 2, phthalic acid two (undecyl) is though useful to raising processing characteristics when ester content is higher, unhelpful to improving optical property.Performance comparison as can be seen from embodiment and comparative example: hexagonal boron nitride, phthalic acid two (undecyl) ester are useful to improving composition processing characteristics, significantly increase critical shear rate, reduce shear viscosity.Both effectively improve the processing characteristics of composition with suitable ratio mixing energy.Hexagonal boron nitride, phthalic acid two (undecyl) ester and phthalocyanine blue to reducing goods mist degrees, to improve the optical property of film useful.
Contriver has also done single argument simultaneous test to the add-on of hexagonal boron nitride and phthalic acid two (undecyl) ester, the additional proportion of the add-on of hexagonal boron nitride and phthalic acid two (undecyl) ester and add-on are done respectively and are increased progressively Experimental comparison, find that the additional proportion when hexagonal boron nitride and phthalic acid two (undecyl) ester is 1:1, when content is 1.0 parts, the critical shear rate of composition improves, shear viscosity reduces, simultaneous temperature susceptibility declines, namely composition can be processed at a lower temperature, reduces energy consumption; When the additional proportion of hexagonal boron nitride and phthalic acid two (undecyl) ester is 1:2, hexagonal boron nitride content is 0.7 part, when phthalic acid two (undecyl) ester content is 1.4 parts, the critical shear rate of composition is large, and processibility is good.
The above is only preferred embodiment of the present invention, and be not restriction the present invention being made to other form, any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified as the Equivalent embodiments of equivalent variations.But everyly do not depart from technical solution of the present invention content, any simple modification, equivalent variations and the remodeling done above embodiment according to technical spirit of the present invention, still belong to the protection domain of technical solution of the present invention.
Claims (7)
1. a linear low density polyethylene auxiliary agent master batch, it is characterized in that, weight part consists of: type low density polyethylene resin 100 parts, 0.25 ~ 1.5 part, oxidation inhibitor, acid-acceptor 0.3 ~ 1.0 part, hexagonal boron nitride 0.2 ~ 1.0 part, phthalic acid two (undecyl) ester 0.3 ~ 4.0 part, phthalocyanine blue 0.01 ~ 0.02 part;
Wherein, type low density polyethylene resin is the multipolymer of ethene and 1-butylene or 1-hexene, and type low density polyethylene resin density is 0.91 ~ 0.92g/cm
3, melt mass flow rate is 2 ~ 10g/10min.
2. linear low density polyethylene auxiliary agent master batch according to claim 1, is characterized in that: described oxidation inhibitor is Hinered phenols antioxidant or phosphite ester kind antioxidant.
3. linear low density polyethylene auxiliary agent master batch according to claim 1, is characterized in that: described acid-acceptor is Zinic stearas.
4. linear low density polyethylene auxiliary agent master batch according to claim 1, is characterized in that: the powder purity of described hexagonal boron nitride is 99%, and particle diameter is 0.03 ~ 0.1 μm, and crystalline structure is sheet, and aspect ratio is 13:1.
5. linear low density polyethylene auxiliary agent master batch according to claim 1, it is characterized in that: the mass ratio of described hexagonal boron nitride and phthalic acid two (undecyl) ester is 1:1 ~ 2, the gross weight number of hexagonal boron nitride and phthalic acid two (undecyl) ester is 1.5 ~ 2.1 parts.
6. a preparation method for the linear low density polyethylene auxiliary agent master batch described in any one of claim 1 ~ 5, it is characterized in that, concrete preparation process is:
1) by weight, 0.25 ~ 1.5 part of oxidation inhibitor, 0.3 ~ 1.0 part of acid-acceptor, 0.1 ~ 2.0 part of phthalic acid two (undecyl) ester, 0.01 ~ 0.02 part of phthalocyanine blue is added in 50 parts of type low density polyethylene resin powders, 5 ~ 10min is mixed in homogenizer, the material mixed is joined in twin screw extruder, melting, plastify, extrude, granulation;
2) by weight, in 50 parts of type low density polyethylene resins, add 0.2 ~ 2.0 part of phthalic acid two (undecyl) ester, 5 ~ 10min is mixed in homogenizer, add 0.2 ~ 1.0 part of hexagonal boron nitride again, lowly mix conjunction 3 ~ 5min, the material mixed joined in single screw extrusion machine, melting, plastify, extrude, granulation;
3) by step 1) and step 2) pellet prepare respectively after with the mass ratio of 1:1 add in homogenizer mix 3 ~ 5min, to obtain final product.
7. the preparation method of linear low density polyethylene auxiliary agent master batch according to claim 6, it is characterized in that: described in phthalic acid two (undecyl) ester adopt acetone diluted, the volume ratio of phthalic acid two (undecyl) ester and acetone is 1:10.
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| CN110724333A (en) * | 2018-07-16 | 2020-01-24 | 中国石油化工股份有限公司 | Linear low-density polyethylene additive master batch, preparation method and application thereof |
| CN111921616A (en) * | 2020-07-23 | 2020-11-13 | 江苏恒峰线缆有限公司 | High-performance LDPE (Low-Density polyethylene) film material |
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| CN108794867B (en) * | 2017-04-28 | 2021-02-12 | 中国石油化工股份有限公司 | Master batch for polyethylene film, polyethylene composition for film blowing and preparation method thereof |
| CN110724333A (en) * | 2018-07-16 | 2020-01-24 | 中国石油化工股份有限公司 | Linear low-density polyethylene additive master batch, preparation method and application thereof |
| CN111921616A (en) * | 2020-07-23 | 2020-11-13 | 江苏恒峰线缆有限公司 | High-performance LDPE (Low-Density polyethylene) film material |
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