CN108102201A - A kind of polyolefin elastomer peritoneal dialysis drainage bag block being thermoformed and preparation method thereof - Google Patents
A kind of polyolefin elastomer peritoneal dialysis drainage bag block being thermoformed and preparation method thereof Download PDFInfo
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- CN108102201A CN108102201A CN201711345279.7A CN201711345279A CN108102201A CN 108102201 A CN108102201 A CN 108102201A CN 201711345279 A CN201711345279 A CN 201711345279A CN 108102201 A CN108102201 A CN 108102201A
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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
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L53/00—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L53/02—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes
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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
- C08L53/00—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L53/02—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes
- C08L53/025—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes modified
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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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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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
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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
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/062—HDPE
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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
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/066—LDPE (radical process)
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Abstract
Present invention is disclosed a kind of polyolefin elastomer peritoneal dialysis drainage bag blocks being thermoformed and preparation method thereof.This method is specifically that tackifying resin, thermoplastic elastomer (TPE) and filler are added in polyolefin, after mill, mixing or squeezing out, obtains the medical cap material of the polyolefin elastomer that can be thermoformed.The material, which can be used for the techniques such as squeezing out, be molded, to be processed into after finished product applied to medical package.Compared with now widely used soft PVC (SPVC) medical cap material, which will not generate any pollution to medical content, will not generate any peculiar smell, will not there is apparent contraction under sterilising temp.
Description
Technical field
The present invention relates to a kind of polyolefin elastomer peritoneal dialysis drainage bag blocks being thermoformed, and in particular to one
The composition and preparation method for the medical block of polyolefin elastomer that kind can be thermoformed, belong to polymer blended, macromolecule into
Type processing, polymeric material field.
Background technology
Medical encapsulating material mainly uses soft PVC (SPVC) material and polyolefin elastomer material at present.
SPVC materials be mixed by many kinds of substance such as polyvinyl chloride resin, plasticizer, stabilizer, lubricants through homogenizer, extruder plasticizing
The processes such as extrusion, pelletizing packaging are made.Elasticity, sealing performance, intensity and the cost of SPVC all meets material requirements.
The softness and elasticity of SPVC materials are as caused by the plasticizer added in, and plasticizer accounts for PVC's in common prescription
Mass percent is up to 30~50%, wherein mainly phthalate, such as DOP (also known as DEHP), DBP, DINP, DIDP,
Also a small amount of epoxidized soybean oil is as extender plasticizer.
Plasticizer refers to the plasticity for increasing plastics, the mobility of resin when improving processing and forming, and it is soft to have product
The organic substance of toughness.It is typically that some are high boiling, is difficult to the solid for the thick liquid or low melting point volatilized.Plasticizer is first
First there is good compatibility with resin, compatibility is better, and plasticization effect is also better.Addition plasticizer can reduce plastics
Glass transition temperature makes hard and rigid plastics become soft and flexible.Plasticizer according to its chemical constitution be divided into Phthalates,
Fatty acid ester, phosphoric acid ester, polyesters, epoxy ester series and chlorine-containing compound etc..Plasticizer is with comprehensive performance is good, price is excellent
Dioctyl phthalate (DOP) based on, PVC is the primary end users of these plasticizer.
The dispute of plasticizer is by preservative film, actually in addition to as preservative film, SPVC products with human medical,
Live in relevant field using very wide, as emgloves, plasma bags, a part of blood transfusion, infusion, respiration appliance, toy for children,
Artificial leather etc..German Arbeitsmedizin universities health research Rettenmeier the toxicity of DOP and metabolism are carried out
Research.Result of study shows that DOP can slowly be escaped from PVC product, into air, soil, water source or even food, is passed through after
The number of ways such as mouth, intravenous injection are hydrolyzed to phthalic acid monoesters and octanol in vivo into vivo.These substances are further
A variety of oxides and Related product are metabolized as, is then disappeared by kidney.Many zooperies both domestic and external show to increase
Modeling agent can influence human body hormonal system, and the teenager in particularly growing up is very unfavorable to boy's testes growth and development.For
This, European Union is included in the harmful substance for influencing biology procreation.There are the plasticizer of PVC product and other auxiliary agents in foreign countries at present
Stringent regulation or it is corresponding suggest, and in China, produce these PVC products plasticizer be still DOP, DBP, DINP,
The traditional types plasticizer such as DIDP.
In recent years, the U.S., Japan, Singapore, South Korea and EU countries were reduced comprehensively uses PVC to be encapsulated as medicine
Material.With being rooted in the hearts of the people for entire society's environmental protection concept, the auxiliary agent security and offal treatment problem of PVC material increasingly into
For the focal issue of social concerns.Therefore, it has been a kind of inevitable to become using polyolefin elastomer material substitution SPVC materials
Gesture, with the solution of cost and process issues, polyolefin elastomer material will be obtained in the encapsulation field of medical
It is large-scale to use.
Polyethylene is a kind of package stock of plastic packing product usage amount maximum, it is by being generated in petroleum refining process
Cracked gas in ethylene formed for polymerizable raw material, since vinyl monomer is nontoxic, so in all kinds of polyethylene raw materials, even if
Vinyl monomer containing 200~300ppm is still nontoxic polymer, available for what is contacted directly with various food and drug
Pack occasion.
There are many kinds of polyethylene, and the age usually occurred by industrialization divides：There is the nineteen thirty-nine poly- second of the industrialized first generation
Alkene, i.e. low density polyethylene (LDPE) (LDPE)；Nineteen fifty-three industrialized second generation polyethylene, i.e. high density polyethylene (HDPE) (HDPE)；1977
Year industrialized third generation polyethylene, i.e. linear low density polyethylene (LLDPE)；Industrialized forth generation polyethylene in 1984,
That is ultra-low density polyethylene (VLDPE)；Industrialized ultra-high molecular weight polyethylenes (UHMWPE) in 1958 and the 1990s
The metallocene PE (mPE) of appearance.
Polyethylene elastomer (POE) is the thermoplastic elastomer (TPE) of ethylene and alpha-olefin copolymer, its main feature is that：(1) alpha-olefin
Flexible chain coiled structure and crystallization ethylene chain as physical crosslinking point, its existing excellent toughness is made to have good processing again
Property.(2) there is no unsaturated double-bond in POE molecular structures, there is excellent ageing-resistant performance.(3) POE narrow molecular weight distributions, tool
There is preferable mobility, it is good with compatible polyolefin.(4) good mobility can improve the dispersion effect of filler, while also may be used
Improve the weld mark strength of product.
Styrene analog thermoplastic elastomer be yield it is maximum, with a kind of the most similar thermoplastic elastomer (TPE) of rubber performance,
4 types are broadly divided into, i.e.,：Styrene-Butadiene-Styrene Block Copolymer (SBS), styrene-isoprene-phenylethene
Block copolymer (SIS), styrene-ethylene-butylene-styrene block copolymer (SEBS), styrene ethylene-propylene-benzene second
Alkene block copolymer (SEPS).Wherein SEBS and SEPS is the hydrogenated copolymer of SBS and SIS respectively.
SBS be in styrene analog thermoplastic elastomer yield maximum (>=70%), cost it is minimum, using a wider product
Kind, it is with styrene (S), the triblock copolymer that butadiene (B) is monomer, has the characteristic of plastics and rubber concurrently, have and stretch
The characteristics such as intensity is big, big surface friction coefficient, low temperature performance well, excellent electrical properties and processing performance are good, become current consumption figure
Maximum thermoplastic elastomer (TPE).
SEBS is the hydrogenation products of thermoplastic elastomer SBS, and the SBS being hydrogenated is due to 1 with high level, 2 structures,
Composition after hydrogenation is polystyrene (S)-polyethylene (E)-polybutene (B)-polystyrene (S), therefore referred to as SEBS.Due to
The carbon-to-carbon double bond of polybutene section is hydrogenated saturation in SEBS, thus with good weatherability, heat resistance, compression resistant morphotropism
With excellent mechanical property.SEBS not only has plasticity, but also with high resiliency, use can be processed without vulcanization.
SIS is with styrene (S), the triblock copolymer that isoprene (I) is monomer, is a kind of new thermoplastic elastomehc
Property body has the characteristic of plastics and rubber concurrently.Soft segment among SIS is made of polyisoprene rubber section, due to unsaturated conjugated
The chemical property of two ethylene linkages is more active, therefore limits SIS widely using in environment outdoors.SIS has thermoplasticity, height
Elasticity, melt index and solution viscosity it is low, with tackifying resin (such as EVA, EAA and EEA) intermiscibility it is good the features such as, be widely used in viscous
The fields such as mixture, coating, modifying plastics.
SEPS is the hydrogenation products of thermoplastic elastomer (TPE) SIS, has many excellent performances, particularly heat resistance, anti-ageing
The property changed and mechanical property improve a lot.SEPS contains shorter methyl group unit series, therefore is not tied in EP rubber segments
Crystalline substance, so SEPS is more soft than the SEBS of partially crystallizable, elasticity and hysteresis behavior are all more preferable than corresponding SEBS.When with softening
During plasticizer of the oil as EP rubber segments, the thermoplastic elastomers using SEPS as basis glue have superpower flexibility and high-elastic
Property.
Tackifying resin is broadly divided into 3 types, i.e.,：Ethylene-vinyl acetate copolymer (EVA), ethylene-acrylic acid copolymer
Object (EAA) and ethylene-ethyl acrylate copolymer (EEA) have good tack cohesive force and high temperature fissility, and have
Excellent heat-resisting, weather-proof, ageing-resistant performance can improve the bonding of polyolefin elastomer and the bottle cap coated steel sheet of specially treated
Intensity.
The medical block of polyolefin elastomer is by polyethylene, polyethylene elastomer, styrene analog thermoplastic elastomer, filler
Be process etc. nontoxic, tasteless substance by melt blending, can produce the elastomer that hardness is shore A60~95, product without
It is malicious, tasteless, it can reach the other requirement of medical grade.Therefore cap material is nontoxic, safety and sanitation, medical will not be generated any
It influences.
The content of the invention
It is an object of the invention to solve soft PVC (SPVC) medical block, there are plasticizers and soft
PVC easily shrinks deformation when sterilizing for 121 degree, influences the problem of medical seals and threatens consumer health, provides one kind
The preparation method for the medical block of polyolefin elastomer that can be thermoformed so that the medical block energy of polyolefin elastomer of preparation
Using conventional thermoplastic molding's processing technology, the package material suitable for medical is produced by the method for squeezing out and being molded
Material.
The medical block of the polyolefin elastomer being thermoformed proposed by the invention is by including following component and again
Measure the raw material preparation of number：20~100 parts of polyethylene；0~30 part of tackifying resin；20~150 parts of thermoplastic elastomer (TPE)；；It fills out
0~30 part of material.
The polyethylene be formed by vinyl monomer polymerization or by vinyl monomer and a small amount of alpha-olefin copolymer and
Into including low density polyethylene (LDPE) (LDPE), high density polyethylene (HDPE) (HDPE), linear low density polyethylene (LLDPE), extremely-low density
Polyethylene (VLDPE) and metallocene PE (mPE).
The polyethylene elastomer is the thermoplastic elastomer (TPE) by ethylene and alpha-olefin copolymer.
The styrene analog thermoplastic elastomer is that the three block of styrene and butadiene, styrene and isoprene is total to
Polymers and its hydrogenation products, including Styrene-Butadiene-Styrene Block Copolymer (SBS), styrene-isoprene-benzene second
Alkene block copolymer (SIS), styrene-ethylene-butylene-styrene block copolymer (SEBS), styrene ethylene-propylene-benzene
Ethylene block copolymer (SEPS).
The preparation method of the medical block of the polyolefin elastomer being thermoformed proposed by the invention, specifically will be poly-
Ethylene, polyethylene elastomer, styrene analog thermoplastic elastomer and filler weigh and after mixing, one are kneaded in mixer
After fixing time, the medical block of the polyolefin elastomer that can be thermoformed is obtained；It also can be by polyethylene, polyethylene elastomer, benzene
Ethylene analog thermoplastic elastomer and filler weigh and after mixing, are granulated with double screw extruder or mill goes out on a mill
Piece, gained pellet or the extrudable shaping of sheet stock and injection molding.
In the above method, polyethylene, polyethylene elastomer, styrene analog thermoplastic elastomer, filler can be stirred with high, low speed
Device is mixed to be uniformly mixed or obtain uniform mixture with air blending method, gravity mixing method.
The detailed process of the above method is as follows：By commercially available 20~100 parts of polyethylene, 0~30 part of tackifying resin, 20~
150 parts of polyethylene elastomers or styrene analog thermoplastic elastomer, 0~30 part of filler, stirring 5~stirred after ten minutes
Uniform mixture.Mixture is kneaded 5 in 120~220 DEG C of mixer~after ten minutes, it obtains to be thermoformed poly-
The medical cap material of olefin elastomer.Also can by mixture on 120~220 DEG C of open mill mill 5~after ten minutes, obtain
The medical cap material of polyolefin elastomer that can be thermoformed.It can also be by double screw extruder of the mixture at 120~220 DEG C
It is upper to squeeze out injection, obtain the medical cap material of the polyolefin elastomer that can be thermoformed.
The present invention has the following advantages：
The raw materials such as polyethylene, tackifying resin, polyethylene elastomer, styrene analog thermoplastic elastomer and filler used are all
It is that safety is without side-effects, meets the requirement of ecology and environmental protection；The medical block of polyolefin elastomer is non-toxic and tasteless, safety is defended
It is raw, any influence will not be generated on medical；There will not be apparent contraction under sterilising temp.The medical lid of polyolefin elastomer
Cap can be squeezed out, injection molding processing, and material property can be adjusted by changing the content of each component.The material can be used for making
The accessory of standby peritoneal dialysis drainage bag uses.
Specific embodiment
Present disclosure is described in detail in conjunction with specific embodiment.
Embodiment 1
Material provided by the invention is formulated by weight proportion by following raw material：
By LDPE, EEA, POE and CaCO in above-mentioned raw materials3High-speed stirred obtains uniform mixture.Mixture exists
The medical cap material of the polyolefin elastomer for, obtaining being thermoformed after ten minutes is kneaded in 150 DEG C of mixer.
Embodiment 2
Material provided by the invention is formulated by weight proportion by following raw material：
40 parts of high density polyethylene
20 parts of tackifying resin EAA
100 parts of styrene analog thermoplastic elastomer SEBS
By HDPE, EAA and SEBS high-speed stirred in above-mentioned raw materials, uniform mixture is obtained.Mixture is at 180 DEG C
After being kneaded 15 minutes in mixer, the medical cap material of the polyolefin elastomer that can be thermoformed is obtained.
Embodiment 3
Material provided by the invention is formulated by weight proportion by following raw material：
40 parts of linear low density polyethylene LLDPE
30 parts of tackifying resin EVA
80 parts of styrene analog thermoplastic elastomer SBS
By LLDPE, EVA and SBS high-speed stirred in above-mentioned raw materials, uniform mixture is obtained.Mixture is at 160 DEG C
The medical cap material of the polyolefin elastomer for, obtaining being thermoformed after ten minutes is kneaded in mixer.
Embodiment 4
Material provided by the invention is formulated by weight proportion by following raw material：
50 parts of high density polyethylene
70 parts of styrene analog thermoplastic elastomer SIS
70 parts of styrene analog thermoplastic elastomer SBS
By HDPE, SIS and SBS high-speed stirred in above-mentioned raw materials, uniform mixture is obtained.Mixture is at 160 DEG C
Mill after ten minutes, obtains the medical cap material of the polyolefin elastomer that can be thermoformed on open mill.
Embodiment 5
Material provided by the invention is formulated by weight proportion by following raw material：
50 parts of high density polyethylene
75 parts of styrene analog thermoplastic elastomer SEBS
20 parts of styrene analog thermoplastic elastomer SBS
By HDPE, SEBS and SBS high-speed stirred in above-mentioned raw materials, uniform mixture is obtained.Mixture is at 180 DEG C
Mill after ten minutes, obtains the medical cap material of the polyolefin elastomer that can be thermoformed on open mill.
Embodiment 6
Material provided by the invention is formulated by weight proportion by following raw material：
50 parts of low density polyethylene
100 parts of styrene analog thermoplastic elastomer SEBS
40 parts of styrene analog thermoplastic elastomer SBS
By LDPE, SEBS and SBS high-speed stirred in above-mentioned raw materials, uniform mixture is obtained.Mixture 160~
It squeezes out, be granulated on 180 DEG C of double screw extruder, obtain the medical block material of the granular polyolefin elastomer being thermoformed
Material is processed available for injection molding.
Embodiment 7
Material provided by the invention is formulated by weight proportion by following raw material：
30 parts of linear low density polyethylene LLDPE
70 parts of styrene analog thermoplastic elastomer SEBS
50 parts of styrene analog thermoplastic elastomer SEPS
By LLDPE, SEBS and SEPS high-speed stirred in above-mentioned raw materials, uniform mixture is obtained.Mixture 160~
It squeezes out, be granulated on 180 DEG C of double screw extruder, obtain the medical block material of the granular polyolefin elastomer being thermoformed
Material is processed available for injection molding.
Embodiment 8
Material provided by the invention is formulated by weight proportion by following raw material：
By mPE, SEBS, SBS and CaCO in above-mentioned raw materials3High-speed stirred obtains uniform mixture.Mixture exists
It squeezes out, be granulated on 160~200 DEG C of double screw extruder, it is medical to obtain the granular polyolefin elastomer being thermoformed
Cap material is processed available for injection molding.
A variety of modifications of these embodiments will be apparent for those skilled in the art, herein
Defined General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Cause
This, the present invention is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein and new
The consistent most wide scope of clever feature.
Claims (9)
1. a kind of polyolefin elastomer peritoneal dialysis drainage bag block being thermoformed, it is characterised in that:Described can heat
The medical block of polyolefin elastomer of plastic working be by certain part by weight by polyethylene, tackifying resin, thermoplastic elastomer (TPE) and
Filler obtains the medical block of the polyolefin elastomer that can be thermoformed after certain hot mixing processing.
2. a kind of polyolefin elastomer peritoneal dialysis drainage bag block being thermoformed according to claim 1,
The component and parts by weight for being characterized in that the polyolefin elastomer raw material be：20~100 parts of polyethylene；Tackifying resin 0~
30 parts；20~150 parts of thermoplastic elastomer (TPE)；0~30 part of filler.
3. a kind of polyolefin elastomer peritoneal dialysis drainage bag block being thermoformed according to claim 1,
It is characterized in that：The polyethylene is low density polyethylene (LDPE) (LDPE), high density polyethylene (HDPE) (HDPE), linear low density polyethylene
(LLDPE), one or more kinds of combinations in ultra-low density polyethylene (VLDPE) and metallocene PE (mPE).
4. a kind of polyolefin elastomer peritoneal dialysis drainage bag block being thermoformed according to claim 1,
It is characterized in that：The tackifying resin is ethylene-vinyl acetate copolymer (EVA), ethylene-acrylic acid copolymer (EAA) and second
One or more kinds of combinations of alkene-ethyl acrylate copolymer (EEA).
5. a kind of polyolefin elastomer peritoneal dialysis drainage bag block being thermoformed according to claim 1,
It is characterized in that：The thermoplastic elastomer (TPE) is polyethylene elastomer (POE), Styrene-Butadiene-Styrene Block Copolymer
(SBS), styrene-ethylene-butylene-styrene block copolymer (SEBS), styrene-isoprene-phenylethene block copolymerization
One or more kinds of combinations in object (SIS) and styrene ethylene-propylene-styrene block copolymer (SEPS).
6. a kind of polyolefin elastomer peritoneal dialysis drainage bag block being thermoformed according to claim 1,
It is characterized in that：The filler is one or more kinds of combinations in the inorganic fillers such as calcium carbonate, talcum powder, clay.
7. a kind of preparation method for the polyolefin elastomer peritoneal dialysis drainage bag block being thermoformed, it is characterised in that：
After polyethylene, polyethylene elastomer, thermoplastic elastomer (TPE) are weighed mixing in proportion, the mill in open mill, mixing temperature is
120~220 DEG C.
8. a kind of preparation method for the medical block of polyolefin elastomer being thermoformed as claimed in claim 7, special
Sign is：After polyethylene, polyethylene elastomer, thermoplastic elastomer (TPE) are weighed mixing in proportion, the mixing in mixer, mixing
Temperature is 120~220 DEG C.
9. a kind of preparation method for the medical block of polyolefin elastomer being thermoformed as claimed in claim 7, special
Sign is：After polyethylene, polyethylene elastomer, thermoplastic elastomer (TPE) are weighed mixing in proportion, squeezed in double screw extruder
Go out, extrusion temperature is 120~220 DEG C.
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|---|---|---|---|---|
| CN110607018A (en) * | 2018-06-14 | 2019-12-24 | 中国石油天然气股份有限公司 | Soluble film composition, soluble film, preparation method and application thereof |
| CN110607018B (en) * | 2018-06-14 | 2021-11-30 | 中国石油天然气股份有限公司 | Soluble film composition, soluble film, preparation method and application thereof |
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Application publication date: 20180601 |