CN104910573A - Thermoplastic elastomer medical film material - Google Patents
Thermoplastic elastomer medical film material Download PDFInfo
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- CN104910573A CN104910573A CN201510363611.7A CN201510363611A CN104910573A CN 104910573 A CN104910573 A CN 104910573A CN 201510363611 A CN201510363611 A CN 201510363611A CN 104910573 A CN104910573 A CN 104910573A
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Abstract
The invention provides a thermoplastic elastomer medical film material. The thermoplastic elastomer medical film material is characterized by being manufactured from the following substances in percentage by mass: 30-60% of styrene elastomers, 20-50% of processing oil, 10-40% of plastic, 1-10% of fillers and 1-10% of processing aids. Compared with the traditional medical film material, the thermoplastic elastomer medical film material provided by the invention is novel in material and excellent in performances, has the excellent performances of being capable of being recycled, simple in processing procedures, non-toxic, good in low-temperature resistance, ageing resistance and medicine resistance, wide in hardness range, light in weight, comfortable in hand feel, dry and comfortable, and the like, as well as is favoured by lots of customers.
Description
Technical field
The present invention relates to medical thin-film material field, particularly, relate to a kind of thermoplastic elastomer medical thin-film material.
Technical background
Medical thin-film material mostly in the market is the materials such as polyvinyl chloride (PVC), polyethylene (PP), polyethylene (PE), urethane (TPU).
So, as everyone knows, polyvinyl chloride (PVC) manufacturing procedure is complicated, lower temperature resistance and ageing resistance poor, especially in smell and environmental protection, be subject to larger restriction, medical thin-film material applied fewer and feweri, even more country prohibits the use.
And polyethylene (PE) or polypropylene (PP) are although source is comparatively wide, processing is simple, and environmental-protecting performance is excellent, but its durometer level is narrower, hardness is high, resistance to low temperature and elasticity poor, be difficult to reach medical film demand in hand feel and drape degree and elasticity.
In addition, urethane (TPU) then facile hydrolysis, poor flexibility, ageing resistance is poor, and durometer level is narrow, and proportion is high, and usability is also restricted.
So, in recent years, in order to overcome the defect of above-mentioned materials, market sporadicly occurs with the film material of styrenic elastomer (SBS/SEBS) modification, but because it does not all obtain comparatively quantum jump in aspect such as smell, hand feel and drape degree, high and low temperature resistance, film openings performance again, cause the market response general.
Summary of the invention
The present invention is intended to overcome above-mentioned defect, a kind of novel thermoplastic elastomer medical thin-film material is provided, market medical thin-film material is simple for hand feel and drape, light weight, processing to meeting, environmental protection, good springiness, lower temperature resistance is good, Kekelé structure count is good, hardness is moderate etc. performance requriements.
Thermoplastic elastomer medical thin-film material provided by the invention, is characterized in that, is formed by the material manufacture of following mass percentage content:
In addition, thermoplastic elastomer medical thin-film material provided by the invention, also there is such feature: above-mentioned styrenic elastomer can be selected from structure for be made up of hard polystyrene segment, with the mixture of one or more in matrix soft segment (as polyhutadiene, polyisoprene, second third glue or vinylbenzene etc.) mutual joining elastomerics, be preferably the mixture of styrene-isoprene/butadiene-styrene hydrogenated copolymer (as: SEEPS etc.) and styrene-butadiene-styrene block copolymer (as: SBS etc.).
Wherein, when styrenic elastomer is the mixture of styrene-isoprene/butadiene-styrene hydrogenated copolymer (as: SEEPS etc.) and styrene-butadiene-styrene block copolymer (as: SBS etc.), the mass ratio of its materials can be arbitrary ratio; Be preferably styrene-isoprene/butadiene-styrene hydrogenated copolymer: styrene-butadiene-styrene block copolymer=3:0.1-3; Be more preferably preferably styrene-isoprene/butadiene-styrene hydrogenated copolymer: styrene-butadiene-styrene block copolymer=3:0.5-2.
In addition, above-mentioned styrene-isoprene/butadiene-styrene hydrogenated copolymer preferably from hardness be 65-80A, molecular weight is less than the mixture of one or more in the styrene-isoprene/butadiene-styrene hydrogenated copolymer of 120,000; Due to the requirement for thin-film material, the more low easier film forming of molecular weight, molecular weight is preferably the mixture of one or more in the styrene-isoprene/butadiene-styrene hydrogenated copolymer of 9-10 ten thousand.Generally the styrene content of this styrenic elastomer is about 25-35%.
In addition, above-mentioned styrene-butadiene-styrene block copolymer is selected from molecular weight and is less than the mixture of one or more in the styrene-butadiene-styrene block copolymer of 200,000.
In addition, above-mentioned treated oil can be selected from the treated oil that can be used for arbitrarily manufacturing thin-film material, good based on examining of material compatibility, preferably adopt in the present invention with other material compatibility in formula preferably, modest viscosity, heat aging property preferably Kelamayi PS white oil etc.
In addition, the mixture of one or more in the polythene PE being best suited for film forming and use selected by above-mentioned plastics; The mixture of one or more preferably in HDPE high density polyethylene(HDPE), LDPE Low Density Polyethylene, LLDPE linear low density polyethylene; More preferably the mixture of one or more in bimodal LLDPE.
In addition, above-mentioned filler is selected from the mixture of one or more in talcum powder, calcium carbonate, white carbon black, carbon black, titanium dioxide, mica, jade powder.
In addition, above-mentioned processing aid comprises uv-resistant agent, antioxidant and opening agent.
In addition, the preferred version of thermoplastic elastomer medical thin-film material provided by the invention is, is formed by the material manufacture of following mass percentage content:
In addition, present invention also offers the concrete complete processing of thermoplastic elastomer medical thin-film material, therefore basic components is the formula system based on styrenic material, belongs to the modification of polymkeric substance, therefore adopts mechanical physical modification.
Its concrete technical process is as follows: the oil suction → oil suction of styrenic elastomer high speed leaves standstill → batching → twin-screw extrusion → granulation, namely, styrenic elastomer adds processing aid after mixing with treated oil, leave standstill more than 4 hours, even with other material mixing, double-screw extruding pelletizing.
effect of the present invention:
At present, market use more styrenic elastomer be SEBS and SBS, SBS cost is low, but high thermal resistance and heat-resistant aging poor, although SEBS heat-resistant aging comparatively SBS is well a lot, but at hand feel and drape degree, ageing resistance, lower temperature resistance, surface dry is aspect still existing defects may just as well, particularly medical bilayer film, to the Kekelé structure count of material, heat-resistant aging, lower temperature resistance, the requirement of the performances such as surface smoothness is higher, and thermoplastic elastomer medical film material of the present invention is based on styrenic elastomer SEEPS, in addition with plastics, treated oil, fillers etc. form with different ratio physical blending.
Concrete, in screening formulation system of the present invention, adopt the pattern of SEEPS and SBS mixing, wherein, SEEPS is the high-performance styrene analog thermoplastic elastomer utilizing isoprene technological development, the segmented copolymer that its structure is made up of the diene block of polystyrene block and hydrogenation, and two ends are the polystyrene block of rigidity, interlude is soft diene saturated polyolefin block physical crosslinking structure, before processing, styrene block fixes diene block as cross-linking set.Under the effect such as heating and shearing, styrene block can also can flow in deliquescing.After cooling, styrene block again as cross-linking set, can retighten diene block again.Thus make this material have good intensity, make diene block have extraordinary elasticity, and SEEPS and other material available durometer level under different proportionings is comparatively wide simultaneously, and makes it under different hardness condition, have different performances.So, the styrenic elastomer of this structure can make material have the soft feature such as sense of touch, elasticity, lower temperature resistance, resistance to tortuosity, heat-resistant aging, such as: SEEPS-4033 is compared with the SEBS of equivalent molecule amount, molecular structure is more even, molecular weight distribution is narrower, therefore there is good oil absorbency, moderate elongation, high tensile, resistance to low temperature and heat-resistant aging are also more excellent, dryer and comfortableer for film product upper surface, tack-free.
In addition, for ensureing the intensity of material, processing forming, while film-forming properties, can also realize the target reduced costs, and in formula system of the present invention, also preferably adds the SBS that molecular weight is less than 200,000.
In addition, in formula system of the present invention, treated oil can improve mobility and improve processibility, can also improve the consistency of storeroom in addition.
And polyethylene (PE) can improve melt strength, physical strength, improvement processing etc., in the selection of plastics of the present invention, still select the polyethylene (PE) being best suited for film forming and use, preferred employing molecular structure is more even, and the LLDPE that the content of lower molecular weight and high molecular weight component is very low, thus there is good characteristic, as: low smell, few adhesion and good heat sealability, in addition, bimodal LLDPE has wider molecular weight and composition distribution than unimodal, thus easily machine-shaping, and easily keep good physical property and mechanical characteristics.
Filler then can reinforcement with control cost, in the present invention preferred order number be the talcum powder (Talc) of 1250 as filler because talcum powder (Talc) and the more CaCO of use
3class filler is compared, and it has better anti-adhesion effects and smooth sense.And the processing aid adding trace when formulating of recipe especially provides the properties such as Kekelé structure count, uv-resistance, oxidation-resistance.
Compared with traditional medical film material, thermoplastic elastomer medical thin-film material of the present invention, material is novel, excellent performance, have that simple, nontoxic, the good lower temperature resistance of recoverable, manufacturing procedure and heat-resistant aging, resistance to chemical reagents, durometer level are wide, light weight, hand feel and drape, 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
Technical process: the oil suction → oil suction of styrenic elastomer high speed leaves standstill → batching → twin-screw extrusion → granulation
Machined parameters:
| Barrel temperature | Set(ting)value |
| Feed zone temperature | 170℃ |
| Front-end temperature | 175℃ |
| Stage casing temperature | 190℃ |
| Back segment temperature | 145℃ |
| Die head temperature | 140℃ |
Physicals:
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 oil | 30％ |
| PE | 20％ |
| TALC-1250 | 5％ |
| UV-P | 2％ |
| Antioxidant 1010 | 2％ |
| KSL-400 | 1％ |
Embodiment four,
| 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 oil | 20％ |
| LDPE | 30％ |
| Hard charcoal | 1％ |
| UV-531 | 3％ |
| Oxidation inhibitor B225 | 3％ |
| Opening agent | 3％ |
Embodiment six,
| Raw material | Proportioning |
| SEEPS-4044 | 30％ |
| Lee is long by flourish 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 is long by flourish 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 of above-described embodiment two to eight is close with embodiment one with product performance.
In addition, it is worthy of note, the material such as SEEPS, SBS, treated oil, plastics, uv-resistant agent, antioxidant, opening agent also can be selected from arbitrary commercially available material in an embodiment of the present invention.
Claims (10)
1. a thermoplastic elastomer medical thin-film material, is characterized in that, is formed by the material manufacture of following mass percentage content:
2. a kind of thermoplastic elastomer medical thin-film material as claimed in claim 1, is characterized in that:
Described styrenic elastomer is the mixture of styrene-isoprene/butadiene-styrene hydrogenated copolymer and styrene-butadiene-styrene block copolymer.
3. a kind of thermoplastic elastomer medical thin-film material as claimed in claim 2, is characterized in that:
The mass ratio of described styrene-isoprene/butadiene-styrene hydrogenated copolymer and styrene-butadiene-styrene block copolymer is 3:0.5-2.
4. a kind of thermoplastic elastomer medical thin-film material as claimed in claim 2 or claim 3, is characterized in that:
Described styrene-isoprene/butadiene-styrene hydrogenated copolymer is selected from that hardness is 65-80A, molecular weight is less than the mixture of one or more in the styrene-isoprene/butadiene-styrene hydrogenated copolymer of 120,000.
5. a kind of thermoplastic elastomer medical thin-film material as claimed in claim 2 or claim 3, is characterized in that:
Described styrene-butadiene-styrene block copolymer is selected from molecular weight and is less than the mixture of one or more in the styrene-butadiene-styrene block copolymer of 200,000.
6. a kind of thermoplastic elastomer medical thin-film material as claimed in claim 1, is characterized in that:
Described plastics are selected from the mixture of one or more in PE.
7. a kind of thermoplastic elastomer medical thin-film material as described in claim 1 or 6, is characterized in that:
Described plastics are selected from the mixture of one or more in bimodal LLDPE.
8. a kind of thermoplastic elastomer medical thin-film material as claimed in claim 1, is characterized in that:
Described filler is selected from the mixture of one or more in talcum powder, calcium carbonate, white carbon black, carbon black, titanium dioxide, mica, jade powder;
Described processing aid comprises uv-resistant agent, antioxidant and opening agent.
9. a kind of thermoplastic elastomer medical thin-film material as claimed in claim 1, is characterized in that, is formed by the material manufacture of following mass percentage content:
10. a kind of thermoplastic elastomer medical thin-film material as described in as arbitrary in claim 1-9, is characterized in that: its concrete processing process is as follows:
Add processing aid after styrenic elastomer mixes with treated oil, leave standstill more than 4 hours, even with other material mixing, double-screw extruding pelletizing.
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Cited By (7)
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| CN105482737A (en) * | 2016-01-15 | 2016-04-13 | 上海嘉好胶粘制品有限公司 | Medical application adhesive 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 |
| WO2018224881A1 (en) * | 2017-06-06 | 2018-12-13 | Lucenxia Prescience Ag | Crosslinked styrenic block copolymer |
| EP3663355A1 (en) * | 2018-12-04 | 2020-06-10 | Top Glove International SDN. BHD. | Crosslinked styrenic block copolymer |
| 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 |
| 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 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105482737A (en) * | 2016-01-15 | 2016-04-13 | 上海嘉好胶粘制品有限公司 | Medical application adhesive 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 |
| WO2018224881A1 (en) * | 2017-06-06 | 2018-12-13 | Lucenxia Prescience Ag | Crosslinked styrenic block copolymer |
| US11898030B2 (en) | 2017-06-06 | 2024-02-13 | Top Glove Global Sdn Bhd | Crosslinked styrenic block copolymer |
| 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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