CN107383583A - A kind of outer cover material of the low opening force of high rigidity and preparation method and application - Google Patents
A kind of outer cover material of the low opening force of high rigidity and preparation method and application Download PDFInfo
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- CN107383583A CN107383583A CN201710830569.4A CN201710830569A CN107383583A CN 107383583 A CN107383583 A CN 107383583A CN 201710830569 A CN201710830569 A CN 201710830569A CN 107383583 A CN107383583 A CN 107383583A
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- outer cover
- high rigidity
- opening force
- cover material
- low opening
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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
- C08L23/10—Homopolymers or copolymers of propene
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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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
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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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Abstract
The invention discloses a kind of outer cover material of the low opening force of high rigidity and preparation method and application.The outer cover material includes：Polypropylene, polyethylene, cyclic olefine copolymer, based elastomers, auxiliary cross-linked elastomer, cross-linked evocating agent, assistant crosslinking agent, lubricant, antioxidant.The present invention is by the way that polypropylene, polyethylene, based elastomers, auxiliary cross-linked elastomer, assistant crosslinking agent and antioxidant are well mixed, the melt kneading in double screw extruder, then it is cross-linked evocating agent and mix lubricant is uniform, double screw extruder is added to, cyclic olefine copolymer is finally added into double screw extruder, continuously extruded, through supercooling, dry, be granulated, obtain the outer cover material of the low opening force of high rigidity.The outer cover material has the following advantages that：Excellent low-temperature flexibility, high rigidity and low draw ring opening force, is suitable for preparing draw-ring type enclosing cover, especially transfusion packages draw-ring type enclosing cover.
Description
Technical field
The invention belongs to medical high polymer technical field of modification, the outer cover material of the low opening force of more particularly to a kind of high rigidity
And preparation method and application.
Background technology
For many years, the big transfusion package in China is quickly grown, and plastics package instead of most glass bottle packaging.
Current infusion bottle or bag generally comprises enclosing cover, inner cap and the plug between exterior and interior cover with combination cover.This three parts
It is that assembling is completed on cover assembling machine, inner cap, plug specifically are had no into enclosing cover by respective track is respectively delivered to assemble module
Complete assembling.
Infusion bottle or bag are typically formed with combination cover outer cover material by polypropylene modification.Polypropylene is a kind of general heat
Plastic resin, it has the advantages that nontoxic, odorless, solvent resistant, density are small, but also poor with cryogenic property, low temperature environment
The shortcomings of lower embrittlement.
The Chinese patent CN 102276932A that inventor applies before this, disclose a kind of infusion bottle or bag and draw
Ring type outer cover material and preparation method thereof, the toughness of 1~9 part of toughener raising material is employed, is improved polyacrylic crisp
Property；9~25 parts of lubricating resin is employed, is that silicone master batch or nanoscale polytetrafluoroethylgranule granule are one or two kinds of, is played point
Lubrication between subchain, makes raising tab strength, and draw ring is not easy to break；Cause draw ring to open simultaneously easy, open neat in edge.
In addition, the patent such as CN 104945743A, CN 101974176A, is all the method by adding polyethylene, toughener, lubricant
Polyacrylic toughness is improved, improves the mobility of material.But these inventions can not take into account the toughness and rigidity of material：In order to ensure
Material has enough toughness and relatively low draw ring opening force, and the rigidity of material is poor, due to being significantly less rigid than for enclosing cover
Inner cap, inner cap insertion enclosing cover during assembling.Under High-speed assembly state, enclosing cover is easily deformed, and can not improve speed of production, drop
Low production efficiency.
On the basis of inventor is studied with draw-ring type enclosing cover material infusion bottle or bag, further studied, sent out
Now need solve problems with：(1) rigidity of raising lid body is needed, adapts to the higher and higher assembling speed of equipment of assembling；(2) keep away
Exempt from because opening force caused by the rigid lifting of lid increases, and the problems such as draw ring embrittlement is easily pulled apart.
The content of the invention
Primary and foremost purpose the shortcomings that being to overcome prior art of the present invention and deficiency, there is provided a kind of low opening force of high rigidity
Outer cover material.
Another object of the present invention is to the preparation method for the outer cover material for providing the low opening force of the high rigidity.
It is still another object of the present invention to provide the application of the outer cover material of the low opening force of the high rigidity.
The purpose of the present invention is achieved through the following technical solutions：A kind of outer cover material of the low opening force of high rigidity, comprising with
Under composition according to the mass fraction：40~90 parts of polypropylene, 0~30 part of polyethylene, 1~20 part of cyclic olefine copolymer, vinyl
0~20 part of elastomer, 1~15 part of cross-linked elastomer of auxiliary, 0.01~0.3 part of cross-linked evocating agent, assistant crosslinking agent 0.002~0.1
Part, 0.1~4 part of lubricant, 0.01~0.6 part of antioxidant.
The outer cover material of the low opening force of described high rigidity, preferably comprise following composition according to the mass fraction：Polypropylene
50~70 parts, 5~15 parts of polyethylene, 5~10 parts of cyclic olefine copolymer, 10~20 parts of based elastomers, auxiliary crosslinking elasticity
5~15 parts of body, 0.01~0.1 part of cross-linked evocating agent, 0.05~0.1 part of assistant crosslinking agent, 1~4 part of lubricant, antioxidant 0.01
~0.1 part；More preferably include following composition according to the mass fraction：54~60 parts of polypropylene, 10~15 parts of polyethylene, cycloolefin
5~10 parts of copolymer, 10~15 parts of based elastomers, 5~15 parts of cross-linked elastomer of auxiliary, cross-linked evocating agent 0.01~0.05
Part, 0.1 part of assistant crosslinking agent, 2 parts of lubricant, 0.05 part of antioxidant.
Described polypropylene is poly- the third of medical grade polypropylene commonly used in the art, preferably propylene and alpha-olefin copolymer
Alkene, melt index is 1~80g/10min, preferably 5~22g/10min under the conditions of 230 DEG C and 2160g, more preferably 7~
9g/10min。
Described polyethylene is medical grade LLDPE commonly used in the art, preferably at 190 DEG C and
Melt index is 0.1~25g/10min, 0.91~0.95g/cm of density under the conditions of 2160g3Polyethylene；More preferably 190
DEG C and 2160g under the conditions of melt index be 0.1~5g/10min, 0.91~0.93g/cm of density3Polyethylene；Most preferably exist
Melt index is 0.1~1.5g/10min, 0.91~0.92g/cm of density under the conditions of 190 DEG C and 2160g3Polyethylene.
Described based elastomers are copolymer from ethylene and propylene, or the copolymer of ethene and alpha-olefin；At 190 DEG C and
Melt index is 0.1~30g/10min under the conditions of 2160g, and density is 0.85~0.91g/cm3；More preferably at 190 DEG C and
Melt index is 1~10g/10min under the conditions of 2160g, and density is 0.865~0.89g/cm3；Most preferably at 190 DEG C and
Melt index is 3~4g/10min, 0.88~0.89g/cm of density under the conditions of 2160g3。
Alpha-olefin in described based elastomers or polypropylene is preferably one in 1- butylene, 1- hexenes and 1- octenes
Kind or two or more combinations.
Described cyclic olefine copolymer is ethene and ENB (double-heptene) copolymer, meets that medical grade material will
Ask；It is preferred that ENB weight/mass percentage composition be 50~90%, under conditions of 260 DEG C and 2160g melt index be 1~
50cm3/ 10min cyclic olefine copolymer；More preferably ENB weight/mass percentage composition be 75~85%, at 260 DEG C and
Melt index is 10~20cm under conditions of 2160g3/ 10min cyclic olefine copolymer.
Described auxiliary cross-linked elastomer optimization styrene-butadiene-styrene block copolymer, styrene-isoamyl two
Combination more than one or both of alkene-styrene block copolymer, ethylene propylene diene rubber and 1,2- polybutadiene.
The styrene of described SBS optimization styrene mass ratio≤50%-
Butadiene-styrene block copolymer；More preferably styrene mass ratio is 25~35% styrene-butadiene-benzene second
Alkene block copolymer.
The benzene second of described SIS optimization styrene mass ratio≤50%
Alkene-isoprene-styrene block copolymer；More preferably styrene mass ratio is 25~35% styrene-isoamyl two
Alkene-styrene block copolymer.
The described preferred crystallinity of 1,2- polybutadiene is less than 30% 1,2- polybutadiene.
Ethene and propylene are by mole 50~80 in described ethylene propylene diene rubber:50~20 proportionings, Third monomer
For one kind in ethylidene norbornene (ENB), dicyclopentadiene (DCPD) and Isosorbide-5-Nitrae-hexadiene (HD), in ethylene propylene diene rubber
Mass percentage content >=2%；More preferably ethene and propylene is by mole 18~20:10 proportionings, Third monomer are
Ethylidene norbornene (ENB), the mass percentage content in ethylene propylene diene rubber are 3.5~4.5%.
Described cross-linked evocating agent is cumyl peroxide, dual-tert-butyl cumyl peroxide (BIPB), 1,1- are double
(t-butylperoxy) -3,3,5- trimethyl-cyclohexanes, 2,5- dimethyl -2,5- bis(t-butylperoxy)s hexane, the tert-butyl group
One kind in hydrogen peroxide, lauroyl peroxide, benzoyl peroxide, peroxidized t-butyl perbenzoate and azodiisobutyronitrile or
At least two.
Described assistant crosslinking agent is Triallyl isocyanurate (TAIC), triallylcyanurate (TAC), three hydroxyl first
One or both of base propane trimethyl acrylic ester (TMPTMA) and poly- triolefin propylene fulminuric acid ester (P-TAIC) with
On.
Described lubricant is both in silicone master batch, ethylene bis stearamide (EBS) and polyolefin-wax or three answers
With mixture；More preferably ketone master batch, ethylene bis stearamide and polyolefin-wax in mass ratio 20:20:60 proportionings obtain mixed
Compound.
The carrier of described silicone master batch is polypropylene or polyethylene, and wherein silicone accounts for the mass percent of silicone master batch and existed
50% or more；Preferably 70~90%.
Described polyolefin-wax is preferably Tissuemat E or polypropylene wax；More preferably mean molecule quantity be 1000~
10000 Tissuemat E or polypropylene wax.
Described antioxidant is preferably that four [β-(3,5- di-tert-butyl-hydroxy phenyls) propionic acid] pentaerythritol esters are (anti-
Oxygen agent 1010) and three [2,4- di-tert-butyl-phenyls] phosphite ester (irgasfos 168) compounds；More preferably four [β-(3,5- bis-
Tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester and three [2,4- di-tert-butyl-phenyls] phosphite esters in mass ratio 1:1~
1:The mixture that 3 proportionings obtain.
The preparation method of the outer cover material of the low opening force of the high rigidity, comprises the following steps：
Polypropylene, polyethylene, based elastomers, auxiliary cross-linked elastomer, assistant crosslinking agent and antioxidant are well mixed,
At 150~200 DEG C in double screw extruder melt kneading, it is then that cross-linked evocating agent and mix lubricant is uniform, 1/3
Place's side spout is added to double screw extruder, and finally by cyclic olefine copolymer, side spout adds twin-screw extrusion at 1/2
Machine, continuously extruded, through supercooling, dry, be granulated, obtain the outer cover material of the low opening force of high rigidity.
Described extrusion, which refers to 150~210 DEG C add well mixed rear material with main 10~35rpm of feeding speed, squeezes
Go out in machine, extruded with 200~500rpm speed；More preferably added and squeezed with main 20~32rpm of feeding speed with 170~200 DEG C
Go out in machine, extruded with 310~440rpm speed.
The outer cover material of the low opening force of the high rigidity can be directly by adjusting Shooting Technique, for preparing outside draw-ring type
Lid, especially transfusion packages draw-ring type enclosing cover.
The transfusion packages draw-ring type enclosing cover can be assembled into the combination cover of infusion bottle or bag with inner cap, plug.
The principle of the present invention：
(1) ethylene-norbornene copolymer (cyclic olefine copolymer) itself that the present invention uses has ethylene molecule segment,
There is good compatibility with the ethene segment of the composition such as polyethylene, based elastomers, ethylene propylene diene rubber, can equably divide
It is dispersed in above-mentioned ethene segment, while ENB molecule segment has very high rigidity, plays fixed soft segment (ethylene chain
Section) physical crosslinking effect, turn into " connecting fulcrum ", play improve material rigid effect；On the other hand, ethene-drop ice
Piece alkene copolymer and polyacrylic compatibility are relatively poor, formed phase differential from state so that the weak location of product is easy
It is destroyed.Therefore, the otch of draw-ring type enclosing cover is easily torn, and effectively reduces opening force.
(2) present invention uses cross-linked evocating agent and assistant crosslinking agent, to ethylene propylene diene rubber and polypropylene, polyethylene, ethene
Based elastomeric, cyclic olefine copolymer carry out slight crosslinking.A small amount of cross-linked evocating agent can draw in polyolefin chain molecule
Free radical is sent out, assistant crosslinking agent can reduce the degraded of polypropylene molecular chain.Ethylene propylene diene rubber is due to multiple unsaturated friendships
Join point, macromolecules cross-linking agent can be played a part of, form the complicated three-dimensional structure such as branch shape, netted, what cross-linked areas was formed
Cavity, space, are advantageous to the activity of strand, improve the good toughness of material, can use draw ring not at a lower temperature
Embrittlement, it is not easy to break.Meanwhile lightly crosslinked structure improves the compatibility between each composition, each composition can evenly be distributed,
The phase separation of polypropylene segments and ethene segment is significantly reduced, improves material each side mechanical property, ensures the draw ring of enclosing cover
It is not easily broken.
(3) present invention uses the main body of polyethylene, based elastomers as toughness reinforcing, has relatively low glass transition point temperature
Degree, it is possible to increase polyacrylic low-temperature flexibility.
(4) present invention uses lubricant for the silicone master batch of mass percent 80%, ethylene bis stearamide (EBS), gathered
The compounding mixture of olefin wax three, all with the characteristics of nontoxic, migration amount is few, meet medical grade material auxiliary agent requirement.Meanwhile
Serve outer lubrication and interior greasy property well, add material homogeneity, improve the surface property of material, be easy to extrusion and
Injection, improve processing stability and processing efficiency.
The present invention is had the following advantages and beneficial effect relative to prior art：
(1) material provided by the invention has excellent low-temperature flexibility, and enclosing cover draw ring is not easy to break.Poly- second in toughened system
Alkene, based elastomers reduce the glass transition temperature of material, improve low temperature applicability；A small amount of cross-linked evocating agent and help
Crosslinking agent adds, and forms branch shape, the three dimensional network structure of complexity, while compatibility improves between each composition, improves material
Combination property.
(2) material provided by the invention has high rigidity and low draw ring opening force.This is due to that with the addition of cycloolefin to be total to
Polymers, itself has very high rigidity, and good with the ethene segment compatibility of toughness reinforcing, is uniformly distributed in the molecule segment of toughness reinforcing,
Reinforcement molecule segment, realize the rigidity reinforced of material；Meanwhile cyclic olefine copolymer and polypropylene form differential phase structure,
So that the draw ring opening force of enclosing cover substantially reduces.
(3) the auxiliary agent lubricant that adds of the present invention, antioxidant stability are good, and toxicity is low, not shadow under appropriate addition
Ring the medical grade hygienic requirements of material.
(4) present invention process is simple, stable performance, can realize and mass produce in workshop.
Embodiment
With reference to embodiment, the present invention is described in further detail, but the implementation of the present invention is not limited to this.
The material that embodiment and comparative example are selected is as follows：
Polypropylene (PP)：STM866 (Taiwan Lee length is flourish, 230 DEG C, is measured under 2.16kg and melts finger 8g/10min)
Polyethylene (PE)：PCG61 (Saudi Arabia's base plastic, 190 DEG C, is measured under 2.16kg to melt and is referred to 1g/10min, density
0.918g/cm3)
Cyclic olefine copolymer (COC)：(Japanese factoring chemistry, 260 DEG C, 2.16kg measures to melt refers to 14cm to 6013M3/ 10min,
80%) ENB mass percent is about.
Based elastomers (POE)：(Mitsui is chemical, 190 DEG C, is measured under 2.16kg and melts finger 3.5g/ by A-4085S
10min, density 0.885g/cm3)
Aid in cross-linked elastomer：Ethylene propylene diene rubber (EPDM), 501A (South Korea SK, ENB mass percent 4.1%, second
The molar percentage of alkene and propylene is about 19:10)；SBS (SBS), Lee grow honor 3411
(styrene-content 30%).
Cross-linked evocating agent：Dual-tert-butyl cumyl peroxide (BIPB)
Assistant crosslinking agent：Triallyl isocyanurate (TAIC)
Lubricant：Silicone master batch+ethylene bis stearamide (EBS)+polypropylene wax (ratio of three by mass, silicone
Master batch:EBS:Polypropylene wax=20:20:60；The carrier of silicone is polypropylene, and the mass percent that silicone accounts for silicone master batch is
80%).
Antioxidant：168+1010(168:1010=2:1)
Embodiment A1-A6 and comparative example CA1-CA6 preparation method：By polypropylene, polyethylene, based elastomers,
EPDM or SBS is well mixed, then add auxiliary agent antioxidant, lubricant, help friendship with 1000r/min speed in high-speed mixer
Connection agent is uniformly dispersed, and extrusion temperature is arranged on 170~200 DEG C, feeds screw rod with 28rpm speed, screw speed is set as
380rpm.Crosslinking agent claims side spout at 1/3 before screw rod to add using weightless, and cyclic olefine copolymer is claimed in screw rod using weightless
Side spout adds at preceding 1/2, is continuously extruded, water cooling, air-dries, pelletizing, and the enclosing cover material of the low opening force of high rigidity is made
Material, and above-mentioned material is molded into model and draw-ring type enclosing cover.After placing 24h, test tensile strength, bending strength, breach hang
Arm beam impact strength, enclosing cover draw ring opening force, as shown in table 1.
Wherein, tensile strength is tested according to GB/T1040-2006 methods, speed 500mm/min；Bending strength according to
GB/T9341-2008 methods are tested, speed 20mm/min；Notched Chalpy impact intensity is according to GB/T1843-2008 methods
Test；Enclosing cover opening force is tested according to YBB00242004-2016 methods.
The draw ring outer cover material the performance test results of table 1
As the embodiment of table 1 and comparative example are proved, the high rigidity low opening force draw-ring type enclosing cover of the invention being prepared
Material, in the case of tensile yield strength is similar, the embodiment of cyclic olefine copolymer is with the addition of, there is higher bending strength,
Draw ring power is also smaller simultaneously.Cross-linked evocating agent and assistant crosslinking agent play a part of mutually cooperateing with：Only addition cross-linked evocating agent without
Assistant crosslinking agent is added, notched Chalpy impact intensity has declined.When adding elastomer-assisted and cross-linked evocating agent simultaneously, material
Material has higher toughness, and lacks one of them, and toughness is decreased obviously, and especially when not adding cross-linked evocating agent, enclosing cover is drawn
Ring is easily broken off.
POE and PE can be replaced mutually in material system of the present invention, and both are comparatively speaking：In the close situation of tensile yield strength
Under, more POE material, compared with more PE material, its toughness is more preferable, and draw ring is opened smaller.
Above-described embodiment is the preferable embodiment of the present invention, but embodiments of the present invention are not by above-described embodiment
Limitation, other any Spirit Essences without departing from the present invention with made under principle change, modification, replacement, combine, simplification,
Equivalent substitute mode is should be, is included within protection scope of the present invention.
Claims (10)
1. the outer cover material of the low opening force of a kind of high rigidity, it is characterised in that comprising following composition according to the mass fraction：Poly- third
40~90 parts of alkene, 0~30 part of polyethylene, 1~20 part of cyclic olefine copolymer, 0~20 part of based elastomers, auxiliary crosslinking elasticity
1~15 part of body, 0.01~0.3 part of cross-linked evocating agent, 0.002~0.1 part of assistant crosslinking agent, 0.1~4 part of lubricant, antioxidant
0.01~0.6 part.
2. the outer cover material of the low opening force of high rigidity according to claim 1, it is characterised in that comprising pressing mass parts below
The composition of number meter：50~70 parts of polypropylene, 5~15 parts of polyethylene, 5~10 parts of cyclic olefine copolymer, based elastomers 10~
20 parts, auxiliary 5~15 parts of cross-linked elastomer, 0.01~0.1 part of cross-linked evocating agent, 0.05~0.1 part of assistant crosslinking agent, lubricant 1
~4 parts, 0.01~0.1 part of antioxidant.
3. the outer cover material of the low opening force of high rigidity according to claim 1 or 2, it is characterised in that：
Described polypropylene is the polypropylene of propylene and alpha-olefin copolymer；
Described polyethylene is LLDPE；
Described based elastomers are copolymer from ethylene and propylene, or the copolymer of ethene and alpha-olefin；
Described cyclic olefine copolymer is ethene and norbornene copolymer.
4. the outer cover material of the low opening force of high rigidity according to claim 3, it is characterised in that
Described polypropylene melt index under the conditions of 230 DEG C and 2160g is 1~80g/10min；
Described polyethylene is that melt index is 0.1~25g/10min under the conditions of 190 DEG C and 2160g, density 0.91~
0.95g/cm3；
Described based elastomers melt index under the conditions of 190 DEG C and 2160g is 0.1~30g/10min, density 0.85
~0.91g/cm3；
Described cyclic olefine copolymer is that ENB weight/mass percentage composition is 50~90%, under conditions of 260 DEG C and 2160g
Melt index is 1~50cm3/ 10min cyclic olefine copolymer.
5. the outer cover material of the low opening force of high rigidity according to claim 1 or 2, it is characterised in that：
Described auxiliary cross-linked elastomer is SBS, styrene-isoprene-benzene second
Combination more than one or both of alkene block copolymer, ethylene propylene diene rubber and 1,2- polybutadiene；
Described cross-linked evocating agent is cumyl peroxide, dual-tert-butyl cumyl peroxide, the double (t-butyl peroxies of 1,1-
Base) -3,3,5- trimethyl-cyclohexanes, 2,5- dimethyl -2,5- bis(t-butylperoxy)s hexane, TBHP, mistake
Aoxidize lauroyl, benzoyl peroxide, peroxidized t-butyl perbenzoate and one kind in azodiisobutyronitrile or at least two；
Described assistant crosslinking agent is Triallyl isocyanurate, triallylcyanurate, trimethylol propane trimethyl third
It is more than one or both of olefin(e) acid ester and poly- triolefin propylene fulminuric acid ester；
Described lubricant is the compounding mixture of both or three in silicone master batch, ethylene bis stearamide and polyolefin-wax；
Described antioxidant is four [β-(3,5- di-tert-butyl-hydroxy phenyls) propionic acid] pentaerythritol esters and three [2,4- bis-
Tert-butyl-phenyl] phosphite ester compound.
6. the outer cover material of the low opening force of high rigidity according to claim 5, it is characterised in that：
Described SBS is styrene-fourth two of styrene mass ratio≤50%
Alkene-styrene block copolymer；
Described SIS is styrene-isoamyl of styrene mass ratio≤50%
Styrene block copolymer；
Described 1,2- polybutadiene is the 1,2- polybutadiene that crystallinity is less than 30%；
Ethene and propylene are by mole 50~80 in described ethylene propylene diene rubber:50~20 proportionings, Third monomer is second
One kind in ENB, dicyclopentadiene and Isosorbide-5-Nitrae-hexadiene is pitched, the mass percentage content in ethylene propylene diene rubber >=
2%；
The carrier of described silicone master batch is polypropylene or polyethylene, and wherein silicone accounts for the mass percent of silicone master batch 50%
Or more；
Described polyolefin-wax is Tissuemat E or polypropylene wax；
Described antioxidant is four [β-(3,5- di-tert-butyl-hydroxy phenyls) propionic acid] pentaerythritol esters and three [2,4- bis-
Tert-butyl-phenyl] phosphite ester in mass ratio 1:1~1:The mixture that 3 proportionings obtain.
7. the preparation method of the outer cover material of the low opening force of any one of claim 1~6 high rigidity, it is characterised in that including
Following steps：
Polypropylene, polyethylene, based elastomers, auxiliary cross-linked elastomer, assistant crosslinking agent and antioxidant are well mixed,
At 150~200 DEG C in double screw extruder melt kneading, it is then that cross-linked evocating agent and mix lubricant is uniform, at 1/3
Side spout is added to double screw extruder, and finally by cyclic olefine copolymer, side spout adds double screw extruder at 1/2,
Continuously extruded, through supercooling, dry, be granulated, obtain the outer cover material of the low opening force of high rigidity.
8. the preparation method of the outer cover material of the low opening force of high rigidity according to claim 7, it is characterised in that：Described squeezes
Go out to refer to will it is well mixed after material added with 150~210 DEG C with main 10~35rpm of feeding speed in extruder, with 200~
500rpm speed is extruded.
9. the outer cover material of the low opening force of any one of claim 1~6 high rigidity is preparing the application of draw-ring type enclosing cover, especially
Its application in transfusion packages draw-ring type enclosing cover.
10. the combination cover of a kind of infusion bottle or bag, it is assembled into by draw-ring type enclosing cover and inner cap, plug, it is characterised in that：Described
Draw-ring type enclosing cover is prepared by the outer cover material of the low opening force of any one of claim 1~6 high rigidity.
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| CN201710830569.4A CN107383583B (en) | 2017-09-15 | 2017-09-15 | Outer cover material with high rigidity and low opening force, and preparation method and application thereof |
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| CN201710830569.4A CN107383583B (en) | 2017-09-15 | 2017-09-15 | Outer cover material with high rigidity and low opening force, and preparation method and application thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN111073156A (en) * | 2019-12-19 | 2020-04-28 | 广州市合诚化学有限公司 | Connector material for micro-crosslinked foamed large infusion soft bag, preparation method and application |
| CN112300465A (en) * | 2019-07-24 | 2021-02-02 | 中国石油天然气股份有限公司 | Polyethylene resin composition |
| CN112679859A (en) * | 2020-12-11 | 2021-04-20 | 上海金发科技发展有限公司 | Transparent polypropylene composite material for new energy automobile and preparation method thereof |
| CN113912991A (en) * | 2021-09-26 | 2022-01-11 | 上海日之升科技有限公司 | Rapid crystallization, low diffusion and high toughness PET material and preparation method thereof |
| CN114874374A (en) * | 2021-02-05 | 2022-08-09 | 中国石油化工股份有限公司 | Ethylene propylene diene monomer and preparation method and application thereof |
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| CN111073156A (en) * | 2019-12-19 | 2020-04-28 | 广州市合诚化学有限公司 | Connector material for micro-crosslinked foamed large infusion soft bag, preparation method and application |
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| CN114874374A (en) * | 2021-02-05 | 2022-08-09 | 中国石油化工股份有限公司 | Ethylene propylene diene monomer and preparation method and application thereof |
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