CN104910573B - A kind of thermoplastic elastomer (TPE) medical thin-film material - Google Patents
A kind of thermoplastic elastomer (TPE) medical thin-film material Download PDFInfo
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Abstract
The present invention provides a kind of thermoplastic elastomer (TPE) medical thin-film material, it is characterised in that be fabricated by by the material of following mass percentage content：Styrenic elastomer 30~60%；Processing oil 20~50%；Plastics 10~40%；Filler 1~10%；Processing aid 1~10%.Compared with traditional medical film material, the thermoplastic elastomer (TPE) medical thin-film material of the present invention, material is novel, excellent performance, with simple, nontoxic, the good lower temperature resistance of recoverable, manufacturing procedure and heat-resistant aging, resistance to chemical reagents, hardness range be wide, light weight, comfortable feel, the excellent performance such as dry and comfortable, firmly get client's favor.
Description
Technical field
The present invention relates to medical thin-film material field, in particular it relates to a kind of thermoplastic elastomer (TPE) medical thin-film material.
Technical background
Medical thin-film material in the market is generally polyvinyl chloride (PVC), polyethylene (PP), polyethylene (PE), poly- ammonia
The materials such as ester (TPU).
So, it is well known that polyvinyl chloride (PVC) manufacturing procedure is complicated, lower temperature resistance and resistance to ag(e)ing are poor, especially in gas
Taste and environmental protection aspect are applied fewer and fewer by larger limitation on medical thin-film material, or even more country has prohibitted the use of.
And polyethylene (PE) or polypropylene (PP) process simple although source is wider, environmental-protecting performance is excellent, its hardness model
Enclose narrower, hardness is high, resistance to low temperature and elasticity are poor, be difficult to reach that medical film is needed in terms of comfortable feel degree and elasticity
Ask.
In addition, polyurethane (TPU) then facile hydrolysis, poor flexibility, resistance to ag(e)ing is poor, hardness range is narrow, and proportion is high, and usability is also
It is restricted.
So, in recent years, in order to overcome the defect of above-mentioned material, in the market sporadicly occurs with styrenic elastomer
(SBS/SEBS) modified film material, but due to its smell, comfortable feel degree, high and low temperature resistance, film openings again
All do not obtained compared with quantum jump in terms of energy, cause the market response general.
The content of the invention
It is contemplated that drawbacks described above is overcome there is provided a kind of new thermoplastic elastomer (TPE) medical thin-film material, to expire
Sufficient market medical thin-film material for comfortable feel, light weight, process that simple and environmentally-friendly, elastic good, lower temperature resistance is good, Kekelé structure count is good,
The performance requirement of the moderate grade of hardness.
The thermoplastic elastomer (TPE) medical thin-film material that the present invention is provided, it is characterised in that by following mass percentage content
Material be fabricated by：
In addition, the thermoplastic elastomer (TPE) medical thin-film material that provides of the present invention, also with it is such the characteristics of：Above-mentioned styrene
Class elastomer can selected from structure by being made up of hard polystyrene chain segment, with matrix soft segment (such as polybutadiene, poly- isoamyl
Diene, the glue of second third or styrene etc.) one or more of mixtures mutual in joining elastomer, preferably styrene-different
Pentadiene/butadiene-styrene hydrogenated copolymer is (such as：SEEPS etc.) and SBS
(such as：SBS etc.) mixture.
Wherein, when styrenic elastomer be styrene-isoprene/butadiene-styrene hydrogenated copolymer (such as：
SEEPS etc.) and SBS is (such as：SBS etc.) mixture when, the mass ratio of its materials can
Think any proportion；Preferably styrene-isoprene/butadiene-styrene hydrogenated copolymer：Styrene-butadiene-benzene second
Alkene block copolymer=3：0.1-3；More preferably it is preferably styrene-isoprene/butadiene-styrene hydrogenated copolymer：
SBS=3：0.5-2.
It is 65-80A, divides in addition, above-mentioned styrene-isoprene/butadiene-styrene hydrogenated copolymer preferably is selected from hardness
One or more of mixtures in styrene-isoprene/butadiene-styrene hydrogenated copolymer of the son amount less than 120,000；
Due to the requirement for thin-film material, the more low easier film forming of molecular weight, molecular weight is preferably 9-10 ten thousand styrene-isoamyl two
One or more of mixtures in alkene/butadiene-styrene hydrogenated copolymer.The generally styrenic elastomer
Styrene-content is 25-35% or so.
In addition, above-mentioned SBS is selected from styrene-fourth that molecular weight is less than 200,000
One or more of mixtures in styrene block copolymer.
In addition, above-mentioned processing oil may be selected from any processing oil that can be used for manufacturing thin-film material, based on material compatibility
Examine good, be preferred to use in the present invention with formula in other materials compatibility preferably, modest viscosity, heat aging property compared with
Excellent Kelamayi PS white oils etc..
In addition, above-mentioned plastics are from one or more of mixing in the polythene PE for being best suited for film forming and using
Thing；It preferably is selected from HDPE high density polyethylene (HDPE)s, LDPE low density polyethylene (LDPE)s, one kind in LLDPE LLDPEs or several
The mixture planted；More preferably from one or more of mixtures in bimodal LLDPE.
In addition, the one kind of above-mentioned filler in talcum powder, calcium carbonate, white carbon, carbon black, titanium dioxide, mica, jade powder
Or several mixtures.
In addition, above-mentioned processing aid includes anti-UV agent, antioxidant and opening agent.
In addition, the preferred scheme for the thermoplastic elastomer (TPE) medical thin-film material that the present invention is provided is, by following quality percentage
Material than content is fabricated by：
In addition, present invention also offers the specific processing technology of thermoplastic elastomer (TPE) medical thin-film material, therefore basis is matched somebody with somebody
Side is the formula system based on styrenic material, belongs to the modification of polymer, therefore change using mechanical physical blending
Property.
Its specific technological process is as follows：Styrenic elastomer high speed oil suction → oil suction standing → dispensing → bis- spiral shells
Bar extrusion → granulation, i.e., styrenic elastomer add processing aid after being well mixed with processing oil, stand more than 4 hours, with
Other materials are well mixed, double-screw extruding pelletizing.
The effect of the present invention and effect：
At present, in the market is SEBS and SBS using more styrenic elastomer, and SBS costs are low, but heat-resisting quantity with
Heat-resistant aging is poor, although SEBS heat-resistant agings are well many compared with SBS, in comfortable feel degree, resistance to ag(e)ing, low temperature resistant
Property, still have defect in terms of surface dry, particularly medical bilayer film, to the Kekelé structure count of material, heat-resistant aging, resistance to
The requirement of the performances such as low temperature properties, surface smoothness is higher, and the thermoplastic elastomer (TPE) medical film material of the present invention is with benzene second
Alkenes elastomer SEEPS is main body, is formed in addition with plastics, processing oil, filler etc. with different ratio physical blending.
Specifically, in the optimization formula system of the present invention, the pattern mixed using SEEPS with SBS, wherein, SEEPS is
Using the high-performance styrene analog thermoplastic elastomer of isoprene technological development, its structure is by polystyrene block and hydrogenation
The block copolymer that is constituted of diene block, two ends are that rigid polystyrene block, interlude are soft diene saturation
Polyolefin block is physical crosslinking structure, before processing, and styrene block fixes diene block as crosslinking points.Heating and shearing
Under acting on, styrene block can soften and flowable.After cooling, styrene block again can be again solid again as crosslinking points
Determine diene block.So that the material has good intensity, while make diene block that there is extraordinary elasticity, and SEEPS
Available hardness range is wider under different proportionings from other materials, and it is different it is had under the conditions of different hardness
Performance.So, the styrenic elastomer of the structure can make material have soft sense of touch, elasticity, lower temperature resistance, resistance to complications
The features such as property, heat-resistant aging, for example：SEEPS-4033 is compared with the SEBS of equivalent molecule amount, and molecular structure is more uniformly distributed, point
Son amount narrow distribution, therefore with good oil absorption, moderate elongation, high tensile, resistance to low temperature and heat-proof aging
Property is also more excellent, dryer and comfortableer for film product upper surface, tack-free.
In addition, the intensity to ensure material, processing forming, while film forming, moreover it is possible to which realization reduces the target of cost,
In the formula system of the present invention, the SBS that molecular weight is less than 200,000 is further preferably added.
In addition, in the formula system of the present invention, processing oil can improve mobility and improve processability, can also improve in addition
The compatibility of storeroom.
And polyethylene (PE) can improve melt strength, mechanical strength, improve processing etc., in the selection of the plastics of the present invention
On, still from the polyethylene (PE) for being best suited for film forming and using, it is preferred to use molecular structure is more uniformly distributed, and low molecule
Amount and the content of high molecular weight component very low LLDPE, so that with good characteristic, such as：Low smell, few adhesion and good
Heat sealability, in addition, bimodal LLDPE than unimodal there is broader molecular weight and composition to be distributed, thus easy processing is molded, and easily
Keep good physical property and mechanical property.
Filler then can reinforcement with control cost, the present invention in preferably mesh number for 1250 talcum powder (Talc) as filler,
Because talcum powder (Talc) is with using more CaCO3Class filler is compared, and it has more preferable anti-adhesion effects and smooth sense.And with
Micro processing aid is especially added with during side's design, and the properties such as Kekelé structure count, uv-resistance, inoxidizability are provided.
Compared with traditional medical film material, thermoplastic elastomer (TPE) medical thin-film material of the invention, material novelty,
Excellent performance, with simple, nontoxic, the good lower temperature resistance of recoverable, manufacturing procedure and heat-resistant aging, drug-resistant
Property, hardness range wide, light weight, comfortable feel, the excellent performance such as dry and comfortable, firmly get client's favor.
Specific embodiment
Embodiment one,
| Raw material | Proportioning |
| SEEPS-4033 | 30% |
| SBS-3201 | 10% |
| Oil-PW90 | 30% |
| LLDPE-2510 | 20% |
| TALC-1250 | 5% |
| UV-P | 2% |
| A.O | 2% |
| KSL-400 | 1% |
Moulding process：Extrude blown film
Technological process：Styrenic elastomer high speed oil suction → oil suction standing → dispensing → twin-screw extrusion → granulation
Machined parameters：
| Barrel temperature | Setting value |
| Feed zone temperature | 170℃ |
| Front-end temperature | 175℃ |
| Stage casing temperature | 190℃ |
| Back segment temperature | 145℃ |
| Die head temperature | 140℃ |
Physical property：
Embodiment two,
| Raw material | Proportioning |
| SEEPS-4033 | 20% |
| LG-501 | 10% |
| Oil-PW90 | 40% |
| LLDPE-7042 | 20% |
| TALC-1250 | 8% |
| UV-P | 2% |
Embodiment three,
| Raw material | Proportioning |
| SEEPS-4055 | 35% |
| SBS-3201 | 5% |
| 7# white oils | 30% |
| PE | 20% |
| TALC-1250 | 5% |
| UV-P | 2% |
| Antioxidant 1010 | 2% |
| KSL-400 | 1% |
Example IV,
| Raw material | Proportioning |
| SEEPS-4033 | 25% |
| LG-501 | 15% |
| Oil-PW90 | 30% |
| LLDPE-2510 | 20% |
| TALC-1250 | 8% |
| UV-P | 0.5% |
| T501 | 0.5% |
| KSL-400 | 1% |
Embodiment five,
| Raw material | Proportioning |
| SEEPS-4077 | 30% |
| LG-501 | 10% |
| 3# white oils | 20% |
| LDPE | 30% |
| Hard charcoal | 1% |
| UV-531 | 3% |
| Antioxidant B225 | 3% |
| Opening agent | 3% |
Embodiment six,
| Raw material | Proportioning |
| SEEPS-4044 | 30% |
| Lee's length honor 3501 | 20% |
| Oil-PW90 | 25% |
| LLDPE-2510 | 15% |
| Calcium carbonate | 3% |
| UV-P | 3% |
| Antioxidant 1010 | 2% |
| Opening agent | 2% |
Embodiment seven,
| Raw material | Proportioning |
| SEEPS-4033 | 40% |
| Lee's length honor 3501 | 15% |
| Oil-PW90 | 30% |
| LLDPE-2510 | 10% |
| TALC-1250 | 3% |
| Tinuvin791 | 1% |
| A.O | 0.5% |
| Opening agent | 0.5% |
Embodiment eight,
| Raw material | Proportioning |
| SEEPS-4033 | 30% |
| SBS-3201 | 25% |
| Oil-PW90 | 25% |
| LLDPE-2510 | 10% |
| TALC-1250 | 4% |
| Tinuvin791 | 2% |
| A.O | 2% |
| KSL-400 | 2% |
The Product Process and properties of product of above-described embodiment two to eight are close with embodiment one.
In addition, it is worthy of note that, SEEPS, SBS, processing oil, plastics, anti-UV agent, antioxygen in an embodiment of the present invention
The materials such as agent, opening agent are further selected from the material of any commercial available.
Claims (6)
1. a kind of thermoplastic elastomer (TPE) medical thin-film material, it is characterised in that manufactured by the material of following mass percentage content
Form：
Wherein, the styrenic elastomer be styrene-isoprene/butadiene-styrene hydrogenated copolymer and styrene-
The mixture of butadiene-styrene block copolymer；
The plastics are selected from bimodal LLDPE；
Its specific processing process is as follows：
Styrenic elastomer adds processing aid after being well mixed with processing oil, stand more than 4 hours, mixed with other materials
Uniformly, double-screw extruding pelletizing.
2. a kind of thermoplastic elastomer (TPE) medical thin-film material as claimed in claim 1, it is characterised in that：
The styrene-isoprene/butadiene-styrene hydrogenated copolymer and s-B-S block copolymerization
The mass ratio of thing is 3：0.5-2.
3. a kind of thermoplastic elastomer (TPE) medical thin-film material as claimed in claim 1, it is characterised in that：
The styrene-isoprene/butadiene-styrene hydrogenated copolymer is selected from hardness and is less than 12 for 65-80A, molecular weight
One or more of mixtures in ten thousand styrene-isoprene/butadiene-styrene hydrogenated copolymer.
4. a kind of thermoplastic elastomer (TPE) medical thin-film material as described in claim 1 or 3, it is characterised in that：
The SBS is selected from styrene-butadiene-benzene second that molecular weight is less than 200,000
One or more of mixtures in alkene block copolymer.
5. a kind of thermoplastic elastomer (TPE) medical thin-film material as claimed in claim 1, it is characterised in that：
The filler is one or more of in talcum powder, calcium carbonate, white carbon, carbon black, titanium dioxide, mica, jade powder
Mixture；
The processing aid includes anti-UV agent, antioxidant and opening agent.
6. a kind of thermoplastic elastomer (TPE) medical thin-film material as claimed in claim 1, it is characterised in that by following quality percentage
Material than content is fabricated by：
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| CN105482737B (en) * | 2016-01-15 | 2017-08-01 | 嘉好(太仓)新材料股份有限公司 | A kind of Medical coating rubberizing and preparation method thereof |
| CN106433005A (en) * | 2016-10-16 | 2017-02-22 | 济南泰瑞丰高分子新材料有限公司 | High temperature resistant low-deformation medical TPE (thermoplastic elastomer) injection molding rubber plug material and preparation method thereof |
| CN106700383A (en) * | 2016-12-30 | 2017-05-24 | 慈溪市山今高分子塑料有限公司 | TPE material for tourniquet and preparation process thereof |
| CN116333351A (en) | 2017-06-06 | 2023-06-27 | 顶级手套全球私人有限公司 | Crosslinked styrenic block copolymers |
| EP3663355A1 (en) * | 2018-12-04 | 2020-06-10 | Top Glove International SDN. BHD. | Crosslinked styrenic block copolymer |
| CN112391058A (en) * | 2019-08-14 | 2021-02-23 | 欧菲影像技术（广州）有限公司 | Thermoplastic elastomer and preparation method and application thereof |
| CN111605277A (en) * | 2020-04-27 | 2020-09-01 | 温州市特康弹力科技股份有限公司 | Sanitary material |
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| KR20140016436A (en) * | 2009-12-29 | 2014-02-07 | 생-고뱅 퍼포먼스 플라스틱스 코포레이션 | A flexible tubing material and method of forming the material |
| US20130225020A1 (en) * | 2012-02-24 | 2013-08-29 | Kraton Polymers Us Llc | High flow, hydrogenated styrene-butadiene-styrene block copolymer and applications |
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