CN108003547A - Medical TPE sealing materials of heat resistant type and preparation method thereof - Google Patents
Medical TPE sealing materials of heat resistant type and preparation method thereof Download PDFInfo
- Publication number
- CN108003547A CN108003547A CN201711345334.2A CN201711345334A CN108003547A CN 108003547 A CN108003547 A CN 108003547A CN 201711345334 A CN201711345334 A CN 201711345334A CN 108003547 A CN108003547 A CN 108003547A
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- Prior art keywords
- heat resistant
- resistant type
- sealing materials
- medical
- tpe sealing
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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
-
- 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
- C08L23/14—Copolymers of propene
-
- 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
-
- 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
-
- 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
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/02—Applications for biomedical use
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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
-
- 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
-
- 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
- C08L2207/10—Peculiar tacticity
- C08L2207/14—Amorphous or atactic polypropylene
Abstract
Present invention is disclosed medical TPE sealing materials of a kind of heat resistant type and preparation method thereof.This method is specifically addition ethylene octane copolymer, styrenic elastomer and nano-filled dose in polypropylene, after twin-screw extrusion, obtains the medical TPE sealing materials of machinable heat resistant type.The materials application is in the seal field of medical equipment.Compared with the medical sealing material of now widely used flexible PVC, the medical TPE sealing materials of heat resistant type can bear the high steam sterilization of 121 DEG C/30min.
Description
Technical field
The present invention relates to a kind of sealing material, belongs to heat-resisting medical TPE sealing material fields.
Background technology
The softness and elasticity of soft PVC materials are the medical soft polyvinyl chloride as caused by the plasticizer added
Plasticizer accounts for the mass percent of Corvic and reaches 20-50% in sealing material formula, wherein mainly phthalic acid
Esters, such as DOP (also known as DEHP).2001, the polyvinyl chloride of DEHP plasticising was classified as carcinogenic work by International Cancer Research Center
Material, should not be used as medical material.Discarded medical PVC needs that into excessively buried or burning disposal bioxin can be produced at the same time
Gas, seriously pollutes environment.
The medical TPE sealing materials of heat resistant type are filled out by polypropylene, ethylene octane copolymer, styrenic elastomer and nanometer
Fill what the materials such as agent were process by melt blending, the transparent or opaque elastomer that hardness is shore A85-95 can be produced.
Due to the medical TPE sealing materials of heat resistant type be by polypropylene as main body base material, its heat resisting temperature apparently higher than polyvinyl chloride,
It disclosure satisfy that the high steam sterilization of 121 DEG C/30min.
With being rooted in the hearts of the people for entire society's environmental protection concept, the auxiliary agent security of pvc material and offal treatment are difficult
Topic has become the focal issue of social concerns.Therefore, medical soft polychlorostyrene second is substituted using the medical TPE sealing materials of heat resistant type
Alkene sealing material has been a kind of inevitable trend, with the solution of cost and process issues, the medical TPE sealings of heat resistant type
Material will be used on a large scale in medical instrument seal field.
Polypropylene (PP) is that atactic copolymerized polypropene (rPP) is typically to carry out random copolymerization by propylene and a small amount of ethene to obtain
Arrive, isotactic reduction, the compliance increase of its strand, glass transition temperature, crystallinity and fusing point decline, impact strength
It is improved with transparency.
Block polyolefin class elastomer (OBC) is the block copolymer for having unique texture, in OBC strands " hard " " soft "
Section is alternately arranged, and there is good heat resisting temperature, abrasion resistance properties and high/low temperature compression deformation ability, mechanical property to be substantially better than
Other polyolefin elastomers.
Styrene-Butadiene-Styrene Block Copolymer (SBS) be yield is maximum in styrenic elastomer, cost most
It is low, using a wider kind, be with styrene (S), the triblock copolymer that butadiene (B) is monomer, have concurrently plastics and
The characteristic of rubber, has the characteristics such as tensile strength is big, low temperature performance well and processing performance are good, becomes the bullet of current consumption figure maximum
Property body.
Styrene-ethylene-butylene-styrene block copolymer (SEBS) is the hydrogenation products of elastomer SBS, is hydrogenated
SBS is due to 1 with high level, 2 structures, and the composition after hydrogenation is polystyrene (S)-polyethylene (E)-polybutene (B)-poly-
Styrene (S), therefore referred to as SEBS.Since the carbon-to-carbon double bond of polybutene section in SEBS is hydrogenated saturation, thus have well
Weatherability, heat resistance, compression resistant morphotropism and excellent mechanical property.
Styrene-isoprene-styrene block copolymer (SIS) is for monomer with styrene (S), isoprene (I)
Triblock copolymer, be a kind of new elastomer, have the characteristic of plastics and rubber concurrently.Soft segment among SIS is by poly- isoamyl
Diene rubber section forms, and has excellent bellow seal and high temperature retentivity.
Nano imvite has intercalation effect in the polymer, can change the microcosmic interlamellar spacing of molecule, improve the resistance to of polymer
High-temperature behavior and low deformation nature.
The medical TPE sealing materials of heat resistant type are filled out by polypropylene, ethylene octane copolymer, styrenic elastomer and nanometer
Fill that agent etc. is nontoxic, tasteless substance is process by melt blending, the elastomer that hardness is shore A85-95, product can be produced
It is nontoxic, tasteless, it can reach the requirement of U.S. FDA.
The content of the invention
It is an object of the invention to solve the medical sealing material of soft PVC there are plasticizer, patient health
Problem；It is relatively low to solve the heat resisting temperature of medical soft polyvinyl chloride sealing material, the high steam of 121 DEG C/30min can not be born
The problem of sterilization, there is provided the preparation method of the medical TPE sealing materials of heat resistant type so that the medical TPE sealing material of heat resistant type of preparation
Material can use twin-screw extrusion processing technology, be sealed by the method extruded, be molded and be molded to produce suitable for medical instrument
Component.
The medical TPE sealing materials of heat resistant type proposed by the invention, are the raw materials by including following component and parts by weight
Prepare：20-60 parts of polypropylene；20-60 parts of ethylene octane copolymer；50-80 parts of styrenic elastomer；Nano-filled dose
10-30 parts.
The polypropylene is atactic copolymerized polypropene (rPP).The dosage of polypropylene in the mixture is 20-60 weight
Part.
The ethylene octane copolymer is the elastomer of ethylene-octene block copolymerization.Ethylene octane copolymer is mixing
Dosage in thing is 20-60 parts by weight.
The styrenic elastomer be styrene with butadiene, styrene and isoprene triblock copolymer and
Its hydrogenation products, including Styrene-Butadiene-Styrene Block Copolymer (SBS) and styrene-isoprene-phenylethene it is embedding
Section copolymer (SIS).The dosage of styrenic elastomer in the mixture is 50-80 parts by weight.
Described nano-filled dose is nano imvite.The dosage of filler in the mixture is 10-30 parts by weight.
The preparation method of the medical TPE sealing materials of heat resistant type proposed by the invention, specifically by polypropylene, polyolefins
After elastomer, styrenic elastomer, nano-filled dose of weighing, 5-10min is mixed in high-speed mixer, is then placed in double spiral shells
In bar extruder in 160~200 DEG C of temperature ranges extruding pelletization, you can obtain the medical TPE sealing materials of heat resistant type.
The raw material such as polypropylene used, ethylene octane copolymer, styrenic elastomer and nano-filled dose is all safety
Without side-effects, meet the requirement of ecology and environmental protection；The medical TPE sealing materials of heat resistant type are nonpoisonous and tasteless, safety and sanitation, no
Any influence can be produced on medicine；The medical TPE sealing materials of heat resistant type can be extruded, be molded and compression molding processing, material
Performance can be adjusted by varying the content of each component.The material can be used for preparing medical instrument seal assembly.
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：
RPP, OBC, SEBS in above-mentioned raw materials and nano imvite are added in high-speed mixer, obtained after stirring 6min
The mixture stirred evenly.Mixture extruding pelletization on 160-200 DEG C of double screw extruder, you can it is medical to obtain heat resistant type
TPE sealing materials.
Embodiment 2
Material provided by the invention is formulated by weight proportion by following raw material：
RPP, OBC, SEBS in above-mentioned raw materials and nano imvite are added in high-speed mixer, obtained after stirring 8min
The mixture stirred evenly.Mixture extruding pelletization on 160-200 DEG C of double screw extruder, you can it is medical to obtain heat resistant type
TPE sealing materials.
Embodiment 3
Material provided by the invention is formulated by weight proportion by following raw material：
RPP, OBC, SBS in above-mentioned raw materials and nano imvite are added in high-speed mixer, obtained after stirring 10min
The mixture stirred evenly.Mixture extruding pelletization on 160-200 DEG C of double screw extruder, you can it is medical to obtain heat resistant type
TPE sealing materials.
Embodiment 4
Material provided by the invention is formulated by weight proportion by following raw material：
RPP, OBC, SIS, SBS in above-mentioned raw materials and nano imvite are added in high-speed mixer, after stirring 10min
The mixture stirred evenly.Mixture extruding pelletization on 160-200 DEG C of double screw extruder, you can obtain heat resistant type
Medical TPE sealing materials.
Embodiment 5
Material provided by the invention is formulated by weight proportion by following raw material：
RPP, OBC, SEBS, SBS in above-mentioned raw materials and nano imvite are added in high-speed mixer, after stirring 5min
The mixture stirred evenly.Mixture extruding pelletization on 160-200 DEG C of double screw extruder, you can obtain heat resistant type
Medical TPE sealing materials.
Embodiment 6
Material provided by the invention is formulated by weight proportion by following raw material：
RPP, OBC, SEBS, SBS in above-mentioned raw materials and nano imvite are added in high-speed mixer, after stirring 5min
The mixture stirred evenly.Mixture extruding pelletization on 160-200 DEG C of double screw extruder, you can obtain heat resistant type
Medical TPE sealing materials.
The medical TPE sealing materials of the obtained heat resistant types of embodiment 1-6 are tested for the property respectively, are tested such as following table institute
Show：
The medical TPE sealing materials obtained from above-mentioned test result, the present invention, meet the high pressure of 121 DEG C/30min
Steam sterilizing, while there is excellent elasticity, increase medical TPE sealing materials application field.
Particular embodiments described above, pair present invention solves the technical problem that, technical solution and beneficial effect carry out
It is further described, it should be understood that the foregoing is merely the specific embodiment of the present invention, is not limited to this
Invention, within the spirit and principles of the invention, any modification, equivalent substitution, improvement and etc. done, should be included in this hair
Within bright protection domain.
Claims (6)
1. a kind of medical TPE sealing materials of heat resistant type, it is characterised in that the raw material components and parts by weight of the sealing material
For：
20-60 parts of polypropylene；
20-60 parts of ethylene octane copolymer；
50-80 parts of styrenic elastomer；
Nano-filled dose 10-30 parts.
2. the medical TPE sealing materials of heat resistant type according to claim 1, it is characterised in that：The polypropylene (PP) is nothing
Advise copolymer polypropylene.
3. the medical TPE sealing materials of heat resistant type according to claim 1, it is characterised in that：The ethylene octane copolymer
It is block polyolefin class elastomer (OBC).
4. the medical TPE sealing materials of heat resistant type according to claim 1, it is characterised in that：The styrenic elastomer
It is Styrene-Butadiene-Styrene Block Copolymer (SBS), styrene-ethylene-butylene-styrene block copolymer (SEBS)
With the one or more combination in styrene-isoprene-styrene block copolymer (SIS).
5. the medical TPE sealing materials of heat resistant type according to claim 1, it is characterised in that：Described nano-filled dose is to receive
Rice montmorillonite.
A kind of 6. preparation method of the medical TPE sealing materials of heat resistant type, it is characterised in that：By polypropylene, ethylene octane copolymer,
After styrenic elastomer and nano-filled dose weigh in proportion, 5-10min is mixed in high-speed mixer, is then placed in double spiral shells
In bar extruder in 160~200 DEG C of temperature ranges extruding pelletization, you can obtain the medical TPE sealing materials of heat resistant type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201711345334.2A CN108003547A (en) | 2017-12-15 | 2017-12-15 | Medical TPE sealing materials of heat resistant type and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711345334.2A CN108003547A (en) | 2017-12-15 | 2017-12-15 | Medical TPE sealing materials of heat resistant type and preparation method thereof |
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| CN108003547A true CN108003547A (en) | 2018-05-08 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108676245A (en) * | 2018-06-19 | 2018-10-19 | 深圳市炫丽塑胶科技有限公司 | Tasteless type medical oxygen therapy hose TPE material and preparation method thereof |
| CN111892822A (en) * | 2020-07-28 | 2020-11-06 | 台橡（上海）实业有限公司 | Thermoplastic elastomer medical respirator material and processing method thereof |
| CN114163827A (en) * | 2021-12-30 | 2022-03-11 | 常州恒方大高分子材料科技有限公司 | TPE material for tourniquet and preparation method thereof |
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| EP2196500A1 (en) * | 2008-12-12 | 2010-06-16 | Cheil Industries Inc. | Thermoplastic elastomer composition |
| CN101550257A (en) * | 2009-05-14 | 2009-10-07 | 威海洁瑞医用制品有限公司 | Thermoplastic elastomer composite material |
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|---|---|---|---|---|
| CN108676245A (en) * | 2018-06-19 | 2018-10-19 | 深圳市炫丽塑胶科技有限公司 | Tasteless type medical oxygen therapy hose TPE material and preparation method thereof |
| CN111892822A (en) * | 2020-07-28 | 2020-11-06 | 台橡（上海）实业有限公司 | Thermoplastic elastomer medical respirator material and processing method thereof |
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Application publication date: 20180508 |