CN105078652A - Intelligent compression system based on shape memory material - Google Patents
Intelligent compression system based on shape memory material Download PDFInfo
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- CN105078652A CN105078652A CN201410190599.XA CN201410190599A CN105078652A CN 105078652 A CN105078652 A CN 105078652A CN 201410190599 A CN201410190599 A CN 201410190599A CN 105078652 A CN105078652 A CN 105078652A
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Abstract
The invention discloses an intelligent compression system made by a shape memory material. The intelligent compression system is used for managing or preventing chronic venous insufficiency and comprises a shape memory module, an excitation module for exciting shape memory effect and a control module receiving information fed back by the shape memory module and controlling excitation process. The shape memory module comprises but not limited to textiles, made by the shape memory material and with a certain function structure, like compressed stockings and compressed bandages. The invention further relates to making of shape memory filaments and shape memory modules different in structure. The intelligent compression system has the advantages that pressure applied on damaged limbs by the shape memory module can be changed and controlled through simple excitation modules, and the defect of pressure lowering of the shape memory module along with time increase can be overcome, so that treatment degree of freedom is increased, treatment effect is improved, and treatment cost is lowered.
Description
Technical field
The present invention relates to medical instruments field, particularly relate to a kind of Shape-based interpolation memory material for managing or the compressibility of preventing chronic impaired function of vein.
Background technology
Chronic venous insufficiency produces constant pain and sticky feeling, restriction because of it, recovery time is long, treatment cost is high, Therapeutic Method is harsh and has a strong impact on quality of life of patient.Chronic venous insufficiency be PeV because of the clinical syndrome group caused by blood centripetal backflow obstacle, comprise varicose veins of the lower extremity, Primary deep venous insufficiency, deep venous thrombosis of lower limbs etc.Compression therapy is exactly patient and ailing essential method of struggling since ancient times.The external pressure put in impaired limb can accelerate the backflow of venous blood, and then reduces venous pressure, to reach the effect of curing and preventing disease from retransmitting.
In all compression therapy, compression socks and compression bandage always are the first-selection of people.But traditional compressibility (compression socks or compression bandage etc.) is faced with many unsurmountable difficulties:
The first, curative effect and the comfort of compressibility are limited: the pressure that conventional compression system puts on limbs has no idea to change or regulate, except the compressibility that non-replaceable is new; In addition, in order to obtain better curative effect, impaired limb needs continuous a period of time to use compressibility, and the compressibility of high pressure grade can be very uncomfortable when night wears, and makes patient have to abandon night to treat, and affects the treatment;
The second, compressibility use cost is high: along with the growth of service time, and the pressure of compressibility nearly all at present all can decline, because the pressure of these compressibilities is mainly derived from the elastic force of selected materials.Once the force value of compressibility drops to below desired value, only way is exactly the compressibility more renewed;
3rd, optional of compression socks is narrow: current compression socks is on the market broadly divided into three classes according to provided pressure size: one-level low pressure socks (14-17mmHg), socks (18-24mmHg) and three grades of high pressure socks (25-35mmHg) are pressed in secondary, but the force value of designed compression socks is determined by the elasticity of lower limb characteristic (shape and size) and compression socks material, patient is difficult to the compression socks choosing ideal dimensions.
Summary of the invention
For above-mentioned conventional compression system curative effect and comfort is limited, cost is high, optional the problem such as narrow, the invention provides a kind of Intelligent Compression system of Shape-based interpolation memory material, for control and the management of system pressure.
The Intelligent Compression system of described Shape-based interpolation memory material, for the Precaution and management of chronic venous insufficiency, is characterized in that, described Intelligent Compression system comprises: shape memory module, stimulating module and control module;
Described shape memory module comprises shape-memory material; Described shape memory module is for generation of pressure;
Described stimulating module acts on described shape memory module, for encouraging the shape memory effect of described shape-memory material;
Described control module for receiving the feedback information of described shape memory module and acting on described stimulating module, thus controls the process of motivation of described stimulating module.
Described shape memory module comprises shape memory textile; Described shape memory textile comprises compression socks and compression bandage.
The weaving manner of described shape memory textile comprises knitting and tatting; Described shape memory textile is formed by shape-memory polymer weaving filaments separately, or is formed by shape-memory polymer filament and artificial or natural fiber mixed weaving.
Described compression socks and compression bandage comprise the described shape-memory polymer filament that one or more have different thermal transition temperature.
Described shape-memory polymer filament comprises shape memory polyurethane filament, polynorbornene filament, SB filament and anti-form-1,4-polyisoprene filament.
Described shape memory polyurethane filament is by long-chain polyhydric alcohol, and vulcabond and cahin extension agent three kinds of materials synthesize, and wherein, the relative molecular mass scope of described long-chain polyhydric alcohol is 250-6000, and the relative molecular mass scope of described vulcabond is 150-250; The technology for making tobacco threds of described shape-memory polymer filament comprises fusing and soaks.
The thermal transition temperature scope of the described shape memory effect of described shape-memory polymer filament is 0-70 DEG C.
The thermal transition form of described shape-memory polymer filament is fusing or glass transition.
Described stimulating module comprises changing device; Described changing device for regulating the temperature of described shape-memory polymer, and then changes internal pressure or the space deformation of described shape-memory polymer.
Described control module for receiving the force value of shape memory module feedback, and then controls the gradient of temperature process of described stimulating module.
Enforcement the invention has the beneficial effects as follows: shape memory compressibility can carry out regulation and control by external drive device at the pressure at parcel position, easily force value can be regulated within the required range, this free operant space larger for medical personnel provide, also can the force value at regulating system daytime and night as required, ensure patient's wearing compression system within one period of continuous time, promote comfort and heighten the effect of a treatment; Due to the pseudoelasticity feature of shape-memory material, shape memory compressibility can repeatedly utilize, and has saved treatment cost; Shape memory compressibility is sustainable provides required pressure, gets final product Recovery and rebuild value, improve therapeutic efficiency and saved replacement cost when force value declines without the need to dismounting, replacing; Because shape-memory material can produce extra pressure, make the stagnation pressure force value of compression socks can cover all pressure ranks on market, and produce pressure and be no longer dependent on impaired limb feature, be applicable to the limbs of any size.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below.Obviously, the accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the Pressure schematic diagram of compression socks/compression bandage under the external heat effect that provides of first embodiment of the invention;
Fig. 2 is the manufacture method block diagram of the shape memory textile that second embodiment of the invention provides;
Fig. 3 is the shape memory compressibility block diagram that third embodiment of the invention provides;
Fig. 4 is the compression socks pressure test device schematic diagram that four embodiment of the invention provides;
Fig. 5 is that the extra pressure that under the different temperatures that provides of four embodiment of the invention, (30,40 and 50 DEG C) compression socks produces is schemed over time;
Fig. 6 is that the pressure that under the differential tension (5.85,13.06 and 20.27%) that provides of four embodiment of the invention, compression socks produces is schemed over time;
Fig. 7 is the different temperatures (30,40 and 50 DEG C) that four embodiment of the invention provides, the extra pressure rectangular histogram that compression socks produces under differential tension (5.85,13.06 and 20.27%);
Fig. 8 is that under the small tension receiving coil (5.85%) that provides of four embodiment of the invention, the pressure of compression socks is schemed over time.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described.Obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Refer to Fig. 1, Fig. 1 is the Pressure schematic diagram of compression socks/compression bandage under the external heat effect that provides of first embodiment of the invention.As shown in Figure 1, inner circular represents impaired limb 2, and the Range Representation between outer circle border to inner circular border is wrapped in the compression socks/compression bandage 1 in impaired limb 2.Put on the surface pressing in impaired limb 2 relevant with the inner tensions of compression socks/compression bandage 1 with the bilge radius r of limbs.Relation between them meets the relation between the internal pressure of the thin wall cylindrical that Lapalce's law describes and wall tension force:
P＝F/r
Wherein, P is the internal pressure of cylinder, and F is wall tension force, and r is the radius of cylinder.The pressure putting on the impaired limb 2 that compression socks/compression bandage 1 wraps is mainly derived from the inner tensions of compression socks/compression bandage 1.If under the prerequisite not producing other extra deformation, the inner tensions of compression socks/compression bandage 1 can be changed, just can change the force value that compression socks/compression bandage 1 provides.For stress management with control, this will be a huge advantage, because so just in officely can what is the need for the force value regulating or control compression socks/compression bandage 1 to provide when wanting, to reach required target pressure value.In addition, if along with the growth of service time, the force value that compression socks/compression bandage 1 provides declines, and above-mentioned advantage can provide extra force value, thus ensures that compression socks/compression bandage 1 provides required force value for a long time.
The shape-memory polymer that the present invention provides has huge potentiality on above-mentioned force value tunable characteristic.Shape-memory polymer is a kind of intellectual material, and it can remember its original-shape, and when by as its corresponding incentive environment time, it just can return to original-shape from an interim deformed state.This special performance of shape-memory material is called shape memory effect.
Preferably, the shape-memory material that this enforcement provides is thermal sensitive shape memory polymer.For thermal sensitive shape memory polymer, when temperature is lower than its conversion temperature (T
trans) time, the motion of the strand (i.e. switch position) under interim deformed state in thermal sensitive shape memory polymer is sealed up for safekeeping, and now the inner tensions of thermal sensitive shape memory polymer is very low or be zero.When temperature is higher than its conversion temperature (T
trans) time, the switch position of thermal sensitive shape memory material can be triggered, and again will discharge like this and seal tension force up for safekeeping, make the shape-memory material of deformation return to original-shape.This tension force is also referred to as recovery tension force.As shown in Figure 1, compression socks/compression bandage 1 mixes natural or artificial fiber by thermal sensitive shape memory polymer filament to make.By simple heating, just can change the partial pressure of compression socks/compression bandage 1, that is, the pressure rating of compression socks/compression bandage 1 can be controlled by external mode.(<T when the temperature is low
trans), the recovery tension force of shape-memory polymer filament is not triggered, and the pressure obtained only comes from the elastic deformation power F of compression socks/compression bandage 1, so now pressure P is very little.(the >T when temperature is higher
trans), the recovery tension force of shape-memory polymer filament is triggered, and total tension force F of compression socks/compression bandage 1 increases, and then pressure P is increased.
Should be understood that except temperature, shape-memory material also has other forms of driving source, as optical, electrical, magnetic and water etc.The manipulation of photosensitive shape memory material is simple, can remotely stimulating, can the accurate feature such as control objectives region.The light of certain particular range of wavelengths, by shape memory polymer surface, can cause the switch position of shape-memory polymer that photochemical reaction (chemical process) occurs or this is that photic heat effect (physical process) occurs.The quick shape-memory polymer of electricity can utilize the electrical conductivity of additive (as CNT or nanofiber, white carbon black, Graphene and other metallics), excites shape memory effect by electric heat-dissipating.For magnetic control shape memory polymer, under externally-applied magnetic field or electromagnetic field effect, the magnetic-particle made an addition in shape-memory polymer moves back and forth along with the mechanical periodicity of field strength, relative motion now between magnetic-particle and polymer molecule produces friction and collision, and then produces heat.When the heat produced makes the temperature of shape-memory polymer be elevated to conversion temperature, the shape memory effect of magnetically controlled shape memory material will be triggered.The shape-memory material of water or moisture-sensitive mainly refers to the shape memory polyurethane of glass transition.When absorbing moisture, the glass transition temperature of shape memory polyurethane progressively can decline along with the increase of absorbed moisture, to such an extent as to the shape memory effect of just energy triggered shape memory polyurethane at room temperature or under lower temperature.
Refer to Fig. 2, the manufacture method block diagram of the shape memory textile that Fig. 2 provides for second embodiment of the invention.The thermal sensitive shape memory polymer of shape-memory material for providing in first embodiment of the invention synthesized in the present embodiment.Thermal sensitive shape memory polymer has been widely used in many engineering fields.
Preferably, for the thermal sensitive shape memory polymer filament in the present embodiment, its conversion temperature (T
trans) can be glass transition temperature or fusion temperature.For the thermal sensitive shape memory polymer of glass transition type, shape memory effect can occur within the scope of series of temperature.That is pressure can be in different grades by changing temperature by this.And for fusing type thermal sensitive shape memory material, the transformetion range of shape memory effect is limited.But for fusing type thermal sensitive shape memory material, we can utilize two kinds or more kinds of shape-memory polymer with different conversion temperature to make compressibility, thus obtain larger temperature regulating range and wider pressure regulation spectrum.
In the present embodiment, we have chosen suitable shape-memory polymer to make shape memory textile.As shown in Figure 2, this shape-memory polymer is shape memory polyurethane, is synthesized: long-chain polyhydric alcohol, vulcabond and cahin extension agent by three kinds of materials, and the polymerization technique S1 of these three kinds of materials is polymerisation in solution or block polymerization.Synthesized shape memory polyurethane makes shape memory polyurethane filament by technology for making tobacco threds S2 (comprising soaking process and melting process), and then finally makes shape memory textile by comprising knitting and weaving S3 that is tatting.In actual use, we can not be too high the temperature of compressibility, because for impaired limb, too high-temperature cannot bear or can be very uncomfortable.Therefore, suitable conversion temperature (T is selected
trans) be the problem that people are concerned about very much.By selecting suitable component when synthesizing shape-memory polymer, can by conversion temperature (T
trans) be adjusted in target zone.In work before, researching and developing different thermal sensitive shape memory polymers, characterizing in their shape memory characteristic, we have accumulated very rich experience.The conversion temperature range of the shape-memory polymer selected in the present embodiment is 0 ~ 70 DEG C.Table 1 gives the detail parameters of some synthesis the present embodiment shape-memory polymers.
The detail parameters of table 1 shape-memory polymer filament
| Scope (the M of the relative molecular mass of polyhydric alcohol n) | 250-6000 |
| Scope (the M of vulcabond relative molecular mass n) | 150-250 |
| Polymerization technique | Block/solution |
| Technology for making tobacco threds | Melt/soak |
| Conversion temperature range | 0-70℃ |
| Monofilament Denier number | 40-300 |
Wherein, the polyhydric alcohol that the present embodiment uses comprises and is not limited to: polypropylene glycol, polytetramethylene glycol, Polyethylene Glycol, poly-(1,6-adipic acid hexanediol fat) glycol, poly-(1,4-butylene adipate ester) glycol, polyethylene adipate diol, poly-(1,2-monobehenate) glycol, polycaprolactone glycol, bisphenol-A+expoxy propane, bisphenol-A+oxirane, poly-(1,6-hexene adipate ester) glycol.
The vulcabond that the present embodiment uses comprises and is not limited to: isophorone diisocyanate, methylene-bis-(4-cyclohexyl) isocyanates, 1,6-hexamethylene diisocyanate, 4,4 '-methyl diphenylene diisocyanate, 2,4-toluene di-isocyanate(TDI), tetramethylxylene diisocyanate, Isosorbide-5-Nitrae-methylene diisocyanate.
The cahin extension agent that the present embodiment uses comprises and is not limited to: 1, 3-propane diol, 1, 4-butanediol, 1, 2-ethane diol, 1, 6-hexane diol, 4, 4 '-dihydroxydiphenyl, 2, two (hydroxymethyl) propanoic acid of 2-, two (2-hydroxyethyl) ether of hydroquinone, 4, 4 '-bis-(2-hydroxyl-oxethyl) diphenyl, 4, 4 '-bis-(6-hydroxyl hexyloxy) diphenyl, two (to hyd roxymethyl phenyl) terephthalate, 4, 4 '-(1, 4-phenylene two (methyl dynenltrilo)), benzoin, bisphenol-A, two (2-the hydroxyethyl)-ascorbyl palmitate of N-, N methyldiethanol amine, bisphenol A ethoxy thing, 1, 2-diaminoethanes, 1, 2-diaminopropanes, polyhedral oligomeric silsesquioxane, N, two (2-the hydroxyethyl)-ascorbyl palmitate of N-, N methyldiethanol amine.
Should be understood that the polymer such as shape-memory polymer used in the present invention also comprises polynorbornene, SB, anti-form-1,4-polyisoprene.Wherein polynorbornene is polymerized under catalyst by norbornene monomer, and the catalyst used comprises and is not limited to Ziegler-Natta catalyst, MAO, metallocene, [Pb (CH
3cN)
4[BF
4] etc.SB is polymerized in lithium series initiators cationic solution for raw material with styrene, butadiene.Anti-form-1,4-polyisoprene is polymerized under Ziegler-Natta catalyst by isoprene monomer.These polymer can make various shape memory textile by technology for making tobacco threds S2 as shown in Figure 2 and weaving S3 equally.
Shape memory module used in the present invention can be made up of shape-memory polymer filament separately; Also other natural and/or artificial synthetic fiber materials can be comprised, as shown in dashed line in figure 2.
Refer to Fig. 3, Fig. 3 is the shape memory compressibility block diagram that third embodiment of the invention provides.As shown in Figure 3, in the present embodiment, shape memory module 100 is the compression socks made by the shape-memory polymer filament synthesized in second embodiment; Because the shape-memory polymer filament that the second embodiment is finally synthesized is thermo-sensitive material, so stimulating module 200 is heating clamber; And control module 300 is temperature control modules.In the present embodiment, the hybrid yams that compression socks is made up of shape-memory polymer filament and nylon filament is made.Making machine is double side weft knitting knitting machine or circular cyiinder knitting machine.Table 2 gives the detailed making parameter of this compression socks.
The detail parameters of table 2 shape memory socks
Should understand, the open compression socks of the present embodiment is the one in shape memory module 100 concrete manifestation form, shape memory module 100 includes but not limited to compression socks, compression bandage, compression trousers etc., and basketry and the fabric form of simple change shape-memory polymer filament all belong to protection scope of the present invention; Shape memory module 100 in the present embodiment compressibility, stimulating module 200 and control module 300 be an example of the present invention just, those skilled in the art, under the prerequisite not making creative work, is easy to expect difference according to shape memory module 100 shape-memory material used and respective design goes out other different stimulating modules 200 and control module 300; Those skilled in the art is also easy to expect that further refinement does not have hommization, the intelligentized control method function of disclosed stimulating module and control module in the present invention; More than work and all belong to protection scope of the present invention or/and technology enlightenment.
Utilize the compression socks of the 3rd embodiment, four embodiment of the invention provides pressure test device and the pressure testing results of compression socks.Refer to Fig. 4, the compression socks pressure test device schematic diagram that Fig. 4 provides for four embodiment of the invention.As shown in Figure 4, this test set comprises with lower module:
Cylindrical tube 1, pressure testing point 2, Kikuhime pressure transducer 3, compression socks 4 (being grid lines in figure).After being wrapped in by compression socks 4 in cylindrical tube 1, whole pressure test device is placed in heating clamber, and the change of the surface pressing that compression socks 4 produces at pressure testing point 2 place can be observed by the display screen of Kikuhime pressure transducer 3.Experiment obtains heats to compression socks the extra pressure obtained under different temperatures (30,40 and 50 DEG C) and differential tension (5.85,13.06 and 20.27%) condition.
Refer to Fig. 5, the pressure that under the different temperatures that Fig. 5 provides for four embodiment of the invention, (30,40 and 50 DEG C) compression socks 4 produces is schemed over time.As shown in Figure 5, when compression socks 4 is placed in heating clamber, As time goes on the pressure that compression socks 4 puts in cylindrical tube 1 first rise, and finally reaches a maximum and keep stable.In Fig. 5, L1, L2 and L3 are respectively temperature when being 30,40 and 50 DEG C, the maximum pressure value that compression socks 4 produces under relevant temperature effect.We are easy to as seen from Figure 5, L1<L2<L3, and that is, temperature is higher, and the extra pressure that compression socks 4 produces is larger.
Refer to Fig. 6, the extra pressure that under the differential tension (5.85,13.06 and 20.27%) that Fig. 6 provides for four embodiment of the invention, compression socks 4 produces is schemed over time.As shown in Figure 6, when tension force is respectively 5.85,13.06 and 20.27%, the extra pressure that compression socks 4 increases under corresponding tension is respectively 5, and 6 and 9mmHg.Tension force is larger, and the restoring force produced when compression socks 4 recovers deformation is just also large, and therefore produced extra pressure is also larger.
From the test result of Fig. 5 and Fig. 6, we can most clearly see, raised temperature and/or increase tension force compression socks 4 can be caused to produce extra pressure.
Refer to Fig. 7, the extra pressure rectangular histogram that under the different temperatures (30,40 and 50 DEG C) that Fig. 7 provides for four embodiment of the invention, differential tension (5.85,13.06 and 20.27%), compression socks produces.As shown in Figure 7, at the same temperature, tension force is larger, and the extra pressure that compression socks 4 produces is larger; Under same tension force, temperature is higher, and the extra pressure that compression socks 4 produces is larger.
The occurrence of the extra pressure that compression socks 4 under different temperatures (30,40 and 50 DEG C) and differential tension (5.85,13.06 and 20.27%) condition produces will be given in table 3 below.
The extra pressure (unit mmHg) that under table 3 different temperatures and tension force, compression socks produces
Note: the value in bracket represents standard deviation.
Refer to Fig. 8, under the small tension receiving coil (5.85%) that Fig. 8 provides for four embodiment of the invention, the pressure of compression socks is schemed over time.As shown in Figure 8, when compression socks is subject to temperature (T=30,40 or 50 DEG C) excitation, in the time range reaching 8 hours, the pressure that compression socks produces first rises a period of time (about 15 minutes), then declines along with the prolongation of time.And the force value that the compression socks being placed in room temperature produces is declining always.From Fig. 8, we it can also be seen that, the compression socks that temperature is higher, and the time that its force value remains on more than a certain desired value (force value as shown in phantom in FIG.) is longer.In general,
The time of patient's daytime wear compression socks is about 8 ~ 10 hours, and Fig. 8 shows the force value that compression socks of the present invention provides and uses duration can meet the demand of patient.
As can be seen from the above-described embodiment, under guarantee shape memory compressibility does not depart from the prerequisite of limbs, by simple mode of heating, the regulating and control of compressibility pressure can be realized, easily force value can be regulated within the required range, this free operant space larger for medical personnel provide, also can the force value at regulating system daytime and night as required, promotes comfort; When after long-time use, when the elastic force of compressibility declines and makes total force value lower than desired value, shape memory compressibility just can be made to produce extra pressure by simply heating, avoiding the compressibility more renewed, having saved cost; Due to the pseudoelasticity feature of shape-memory material, shape memory compressibility can automatically restore to the original state after removing tension force, can repeatedly utilize, and has saved treatment cost; Because shape-memory material can produce extra pressure, the pressure of compression socks is made to be no longer dependent on the shape and size feature of impaired limb, be applicable to the limbs of any size, and the force value that compressibility produces can cover all pressure ranks in the market.
Above disclosedly be only a kind of preferred embodiment of the present invention, certainly the interest field of the present invention can not be limited with this, one of ordinary skill in the art will appreciate that all or part of flow process realizing above-described embodiment, and according to the equivalent variations that the claims in the present invention are done, still belong to the scope that invention is contained.
Claims (10)
1. an Intelligent Compression system for Shape-based interpolation memory material, for the Precaution and management of chronic venous insufficiency, is characterized in that, described Intelligent Compression system comprises: shape memory module, stimulating module and control module;
Described shape memory module comprises shape-memory material; Described shape memory module is for generation of pressure;
Described stimulating module acts on described shape memory module, for encouraging the shape memory effect of described shape-memory material;
Described control module for receiving the feedback information of described shape memory module and acting on described stimulating module, thus controls the process of motivation of described stimulating module.
2. the Intelligent Compression system of Shape-based interpolation memory material according to claim 1, it is characterized in that, described shape memory module comprises shape memory textile; Described shape memory textile comprises compression socks and compression bandage.
3. the Intelligent Compression system of Shape-based interpolation memory material according to claim 2, it is characterized in that, the weaving manner of described shape memory textile comprises knitting and tatting; Described shape memory textile is formed by shape-memory polymer weaving filaments separately, or is formed by shape-memory polymer filament and artificial or natural fiber mixed weaving.
4. the Intelligent Compression system of Shape-based interpolation memory material according to claim 3, it is characterized in that, described compression socks and compression bandage comprise the described shape-memory polymer filament that one or more have different thermal transition temperature.
5. the Intelligent Compression system of Shape-based interpolation memory material according to claim 3, it is characterized in that, described shape-memory polymer filament comprises shape memory polyurethane filament, polynorbornene filament, SB filament and anti-form-1,4-polyisoprene filament.
6. the Intelligent Compression system of Shape-based interpolation memory material according to claim 5, it is characterized in that, described shape memory polyurethane filament is by long-chain polyhydric alcohol, vulcabond and cahin extension agent three kinds of material synthesis, wherein, the relative molecular mass scope of described long-chain polyhydric alcohol is 250-6000, and the relative molecular mass scope of described vulcabond is 150-250; The technology for making tobacco threds of described shape-memory polymer filament comprises fusing and soaks.
7. the Intelligent Compression system of Shape-based interpolation memory material according to claim 3, it is characterized in that, the thermal transition temperature scope of the described shape memory effect of described shape-memory polymer filament is 0-70 DEG C.
8. the Intelligent Compression system of Shape-based interpolation memory material according to claim 3, is characterized in that, the thermal transition form of described shape-memory polymer filament is fusing or glass transition.
9. the Intelligent Compression system of Shape-based interpolation memory material according to claim 1, it is characterized in that, described stimulating module comprises changing device; Described changing device for regulating the temperature of described shape-memory polymer, and then changes internal pressure or the space deformation of described shape-memory polymer.
10. the Intelligent Compression system of Shape-based interpolation memory material according to claim 1, it is characterized in that, described control module for receiving the force value of shape memory module feedback, and then controls the gradient of temperature process of described stimulating module.
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| US11280031B2 (en) | 2017-07-14 | 2022-03-22 | Regents Of The University Of Minnesota | Active knit compression garments, devices and related methods |
| EP3441408A1 (en) | 2017-08-09 | 2019-02-13 | medi GmbH & Co. KG | A polyurethane with delayed relaxation behaviour for compression products |
| WO2019030297A1 (en) | 2017-08-09 | 2019-02-14 | Medi Gmbh & Co. Kg | A polyurethane with delayed relaxation behaviour for compression products |
| CN113122260A (en) * | 2019-12-30 | 2021-07-16 | Tcl集团股份有限公司 | Quantum dot material, preparation method thereof and quantum dot light-emitting diode |
| CN113122260B (en) * | 2019-12-30 | 2022-08-23 | Tcl科技集团股份有限公司 | Quantum dot material, preparation method thereof and quantum dot light-emitting diode |
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