CN113637460A - Accurate temperature control phase-change material for short-distance transportation of medicines and folding cold storage bag using same - Google Patents
Accurate temperature control phase-change material for short-distance transportation of medicines and folding cold storage bag using same Download PDFInfo
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- CN113637460A CN113637460A CN202110987353.5A CN202110987353A CN113637460A CN 113637460 A CN113637460 A CN 113637460A CN 202110987353 A CN202110987353 A CN 202110987353A CN 113637460 A CN113637460 A CN 113637460A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
- C09K5/02—Materials undergoing a change of physical state when used
- C09K5/06—Materials undergoing a change of physical state when used the change of state being from liquid to solid or vice versa
- C09K5/066—Cooling mixtures; De-icing compositions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D29/00—Sacks or like containers made of fabrics; Flexible containers of open-work, e.g. net-like construction
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
- B65D81/18—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The invention discloses an accurate temperature control phase change material for short-distance drug transportation and a folding cold storage bag using the same, wherein the material comprises the following raw materials in parts by weight: 35-45 parts of first phase change main material, 45-55 parts of second phase change main material, 1-5 parts of phase change energy storage nucleating agent, 0.5-5 parts of stabilizer and 10-15 parts of thickener. The phase-change temperature of the cold-chain drug storage bag is accurately controlled to be 7 ℃, the requirement that the storage temperature of the conventional cold-chain drug is within the range of 2-8 ℃ is met, the cold storage of a refrigerator is not required to be recovered, the cold storage can be completely recovered on site for recycling by directly utilizing the refrigerator of a medical enterprise, a hospital or a vaccination site, and the cold storage bag is of a foldable structure, so that the volume is greatly saved after the cold storage bag is folded, the occupied space is small, and the utilization efficiency of the refrigerator is high.
Description
Technical Field
The invention relates to the technical field of cold chain transportation of medicines, in particular to a precise temperature control phase-change material for short-distance transportation of medicines and a folding cold storage bag using the material.
Background
For the pharmaceutical logistics industry of China, the strict requirement is imposed on the drug transportation process, and some drugs such as vaccines and the like can be transported in a cold chain in the whole process to ensure the drug safety and provide stable and reliable medication guarantee for patients. For cold chain transportation of drugs, it has been the practice to transport drugs primarily using refrigerator car refrigeration units or active type refrigerators. The two transportation modes work by adopting a refrigerating unit, the cold supply mode determines that the compressor needs to consume a large amount of energy (fuel oil) in the low-temperature distribution process, and the oil consumption per hundred kilometers can reach 2-4 liters. In addition, the environment is polluted greatly when a large amount of energy is consumed. Today, where oil prices are increasing, this mode of distribution is undoubtedly neither economical nor environmentally friendly. In recent years, passive refrigerated vehicles and passive cold accumulation heat preservation boxes based on the phase change cold accumulation technology have come into force under the background of the current shortage of energy and the advocation of environmental protection and energy conservation. The passive refrigerator mainly uses cold storage agent as cold source, and uses the cold energy of the cold storage agent to meet the requirement of refrigeration. Therefore, the performance of the phase change cold storage material is very critical to the cold chain transportation of the medicine.
Medicines requiring cold chain transportation are collectively called cold chain medicines, including biological products, blood products, insulin types, vaccines, injections, targeting preparations and the like, and the cold chain medicines are required to be carried out at strictly limited temperatures during storage and transportation, and the conventional cold chain medicines are stored at a temperature in the range of 2-8 ℃, so that the medicines are deteriorated and lost due to overhigh or overlow temperature. The conventional cold chain drug transportation is to transport the cold chain drug to a hospital or a vaccination point from a storage warehouse of a medical enterprise through a refrigerator car, but a distance from the refrigerator car to a refrigerator of the hospital or the vaccination point is within 30 minutes, if no heat preservation measures are taken, the cold chain drug may deteriorate or lose efficacy due to large change of ambient temperature, and how to solve the transportation problem of the last step of the cold chain drug is a problem which is urgently needed to be solved.
The conventional method adopts a passive heat preservation box, and the cold storage agent of the passive heat preservation box mainly comprises two cold storage materials, namely water with the temperature point of 0 ℃ and phase-change paraffin with the temperature point of 5 ℃, which can provide a proper heat preservation range, but have the following defects: the temperature of a storage warehouse of a pharmaceutical enterprise and a refrigerator of a hospital or a vaccination point is 4-6 ℃, water at 0 ℃ can recover cold accumulation only by the refrigerator, phase-change paraffin at 5 ℃ can not completely recover cold accumulation, and cold accumulation can only be completely recovered by the refrigerator, so that the two materials can not completely recover cold accumulation at 4-6 ℃ in the refrigerator, can be transported to the refrigerator, wastes time and labor, and can not be recovered for reuse. In addition, conventional passive insulation can not be folded, needs to occupy great space when cold-storage resumes, and the space of freezer is limited, resumes the cold-storage and needs to go on many times, wastes time and energy, and is inefficient.
Disclosure of Invention
The invention aims to provide an accurate temperature control phase change material for short-distance drug transportation and a folding cold storage pack using the same, wherein the phase change temperature is accurately controlled to be 7 ℃, the requirement that the storage temperature of conventional cold-chain drugs is within the range of 2-8 ℃ is met, cold storage in a refrigerator is not required to be recovered, energy storage can be completely recovered and reused on site by directly utilizing the refrigerator of a pharmaceutical enterprise, a hospital or a vaccination site, and the cold storage pack is of a foldable structure, so that the volume is greatly saved after folding, the occupied space is small, and the utilization efficiency of the refrigerator is high.
The technical scheme adopted by the invention for solving the technical problems is as follows:
an accurate temperature control phase-change material for short-distance transportation of medicines comprises the following raw materials in parts by weight: 35-45 parts of first phase change main material, 45-55 parts of second phase change main material, 1-5 parts of phase change energy storage nucleating agent, 0.5-5 parts of stabilizer and 10-15 parts of thickener.
Preferably, the first phase change main material is n-octanoic acid; the second phase change main material is capric acid. The inventor finds out through long-term research that the phase change at 7 ℃ can be realized by adopting two special phase change materials, and the temperature can be accurately controlled at 7 ℃.
Preferably, the thickener is a thermoplastic elastomer. Thickening effect, and increasing the circulation stability of the material.
Preferably, the thermoplastic elastomer is selected from one or more of SBS, SEBS 7551 and SEBS 503T.
Preferably, the phase change energy storage nucleating agent is one or more selected from ethylene-vinyl acetate copolymer, cyclic olefin copolymer and poly-1-butylene. And the accuracy of the temperature point of the material is ensured.
Preferably, the stabilizer is one or two selected from sodium stearate and calcium stearate. And the stability of the material is improved.
The utility model provides a medicine short-distance transportation is with foldable cold-storage package, includes collapsible cold-storage package body, collapsible cold-storage package body includes box and case lid, and a side of case lid rotates with the box to be connected, all is equipped with on all the other sides of case lid and connects the turn-ups, it can dismantle through the magic subsides with the box to connect the turn-ups, all be equipped with cold-storage interlayer bag on every medial surface of box, also be equipped with cold-storage interlayer bag on the medial surface of case lid, cold-storage interlayer bag is filled cold-storage pad, and the intussuseption of cold-storage pad is filled with accurate accuse temperature phase change material for the transportation of medicine short-distance, case lid and cold-storage interlayer bag fixed connection, the inboard bottom surface of box and cold-storage interlayer bag fixed connection, and the inboard side of box and cold-storage interlayer bag can dismantle the connection through the magic subsides.
Preferably, a pair of handles is symmetrically arranged on two side surfaces of the box body; a plurality of rubber foot pads are evenly distributed on the bottom surface of the box body.
Preferably, the middle parts of four side edges on the bottom surface of the box body are respectively fixed with a folded fixing bandage with a magic tape at one end, the top surface of the box cover is provided with four magic tape rough surfaces, and the four magic tape rough surfaces and the bandage are arranged in a one-to-one correspondence manner.
Preferably, the box body and the box cover are made of composite materials of oxford cloth on the outer side, a pearl cotton layer in the middle and aluminized composite woven cloth on the inner side.
The invention has the beneficial effects that:
1. the melting point (phase transition temperature point) of the material is 7 ℃, so that the material can be accurately controlled, and the temperature of the medicine is kept in an effective range of 2-8 ℃ in the transportation process; and the material has accurate temperature control, low supercooling degree and good circulation stability.
2. The phase change cold storage material becomes viscous liquid, so that the problem that the existing cold storage agent is easy to leak in the cold chain transportation process is greatly reduced, and the safety of medicine transportation is improved.
3. The cold storage can be recovered on site completely by directly utilizing the cold storage of medical enterprises, hospitals or vaccination sites without searching for a refrigerator to recover the cold storage.
4. The cold accumulation package is of a foldable structure, so that the volume is greatly saved after the cold accumulation package is folded, the occupied space is small, and the utilization efficiency of the refrigerator is high.
Drawings
Fig. 1 is a schematic cross-sectional view of a foldable cool storage pack according to the present invention.
Fig. 2 is an enlarged view at a in fig. 1.
Fig. 3 is an enlarged view at B in fig. 1.
Fig. 4 is a plan view of the folding cool storage box cover of the invention after being opened.
Fig. 5 is a bottom view of the foldable cool storage pack of the present invention.
Fig. 6 is a top view of the foldable cool storage pack of the present invention.
FIG. 7 is a temperature-enthalpy curve diagram of the precise temperature control phase change material for short-distance transportation of drugs according to the present invention before and after circulation.
In the figure: 1. the box body, 2, the box cover, 3, the connecting flanging, 4, the magic tape, 5, the cold accumulation interlayer bag, 6, oxford cloth, 7, the pearl wool layer, 8, the aluminized composite woven cloth, 9, the handle, 10, the rubber foot pad, 11 and the binding band.
Detailed Description
The technical solution of the present invention will be further specifically described below by way of specific examples.
In the present invention, the raw materials and equipment used are commercially available or commonly used in the art, unless otherwise specified. The methods in the following examples are conventional in the art unless otherwise specified.
Example 1:
an accurate temperature control phase-change material for short-distance transportation of medicines comprises the following raw materials in parts by weight: 35 parts of a first phase change main material (n-caprylic acid), 55 parts of a second phase change main material (capric acid), 1 part of a phase change energy storage nucleating agent (poly-1-butylene), 0.5 part of a stabilizer (calcium stearate) and 15 parts of a thickening agent (SBS). The melting point of the material is 7 ℃, and the melting enthalpy value is 166 KJ/kg.
Example 2:
an accurate temperature control phase-change material for short-distance transportation of medicines comprises the following raw materials in parts by weight: 45 parts of a first phase change main material (n-octanoic acid), 55 parts of a second phase change main material (decanoic acid), 5 parts of a phase change energy storage crystal nucleating agent (ethylene-vinyl acetate copolymer), 5 parts of a stabilizer (3 parts of calcium stearate and 2 parts of sodium stearate), and 10 parts of a thickening agent (SEBS 7551). The melting point of the material is 7 ℃, and the melting enthalpy value is 171 KJ/kg.
Example 3:
an accurate temperature control phase-change material for short-distance transportation of medicines comprises the following raw materials in parts by weight: 40 parts of a first phase change main material (n-caprylic acid), 50 parts of a second phase change main material (capric acid), 3 parts of a phase change energy storage nucleating agent (2 parts of ethylene-vinyl acetate copolymer and 1 part of cycloolefin copolymer), 3 parts of a stabilizer (calcium stearate) and 12 parts of a thickening agent (SBS 8 parts and SEBS 503T 4). The melting point of the material is 7 ℃, and the melting enthalpy value is 162 KJ/kg.
The preparation method of the phase-change material comprises the following steps: weighing the raw materials in proportion, heating to 50-55 ℃ for dissolution, and stirring and mixing uniformly.
Example 4:
a foldable cold storage bag for short-distance medicine transportation (figure 1 and figure 4) comprises a foldable cold storage bag body, wherein the manufacturing material of the foldable cold storage bag body is formed by compounding oxford cloth 6 on the outer side, a pearl cotton layer 7 in the middle and aluminized composite woven cloth 8 on the inner side (figure 2), and the thickness of the pearl cotton layer is 6 mm.
The foldable cold storage pack body comprises a rectangular box body 1 and a rectangular box cover 2, and the rear side edge of the box cover is connected with the box body into a whole and can rotate to realize opening and closing operations; all be equipped with one on all the other three sides of case lid and connect turn-ups 3, be fixed with a magic subsides hook face on connecting the turn-ups medial surface, be fixed with round magic subsides matte face on the lateral surface of box upper end opening part, it passes through magic subsides 4 with the box and can dismantle and be connected to connect the turn-ups, closes with case lid and box lid fixed like this, and the leakproofness is better, and thermal insulation performance is better.
A cold accumulation interlayer bag 5 (shown in figure 3) is arranged on each of the four inner side surfaces and the bottom surface in the box body, and the size of the cold accumulation interlayer bag is matched with that of the inner side surface of the box body; the inner side surface of the box cover is also provided with a cold accumulation interlayer bag, and the size of the cold accumulation interlayer bag is matched with that of the inner side surface of the box cover; the cold accumulation interlayer bag is made of aluminized composite woven cloth. Cold-storage interlayer bag one end opening is installed the zip fastener and is used for the sack to seal, and cold-storage interlayer bag is interior to be adorned cold pad, and cold-storage pad material is the plastic film, fills the accurate accuse temperature phase change material of medicine short distance transportation in the cold-storage pad, is located and fixes on four cold-storage interlayer bag side on four sides in the box and sets up magic subsides hook face, fixes on four sides in the box and sets up magic subsides hair side, and cold-storage interlayer bag passes through magic subsides with four sides in the box and can dismantle the connection. The cold accumulation interlayer bag on the inner side surface of the box cover is sewn and fixed with the box cover, and the cold accumulation interlayer bag on the bottom surface in the box body is sewn and fixed with the box body.
A pair of handles 9 is symmetrically arranged at the upper parts of the left and right outer side surfaces of the box body; a plurality of rubber foot pads 10 are evenly distributed on the bottom surface of the box body. The middle parts of four side edges on the bottom surface of the box body are all fixed with a folded fixing bandage 11 (figure 5) with one end provided with a hook surface and a magic tape. The top surface of the box cover is provided with four magic tape rough surfaces, and the four magic tape rough surfaces and the binding bands are arranged in a one-to-one correspondence mode (figure 6). The front and the back of the box body are fixedly provided with hook and loop fastener rough surfaces for fixing the binding band when the folding cold storage bag is opened.
The front, the back and the side of the foldable cold accumulation pack body are provided with obvious crease lines; the bottom surface configuration rubber foot, take the nylon bandage that the magic was pasted, when folding cold storage package was opened and is used, the bandage can be fixed and paste the position at front, back magic, when folding cold storage package was folding, the bandage can be fixed at the top promptly on the case lid.
Folding cold-storage package open mode case lid is closed back, and the cold-storage interlayer bag encloses to close and forms the insulation box structure, and the cold-storage interlayer bag adopts the magic to paste the mode and four faces of box inboard fixed during the use, and when folding, the independent cold-storage interlayer bag in four sides can overturn and pile up in the bottom half.
The melting point peak value of the accurate temperature control phase change material for short-distance transportation of the medicine is 6-8 ℃, and the temperature range of the melting point and the freezing point is not more than 2K. The enthalpy value of the product is not less than 150 KJ/kg. The product has cycle stability of not less than 400 times. After 400 times of circulation, the deviation between the melting point and the freezing point of the product still needs to be within the temperature range of 6-8 ℃; the variation of enthalpy is not higher than + -10%.
Cycling stability testing of products
100g of the material of example 3 was weighed into a plastic bottle, placed in a high and low temperature circulation tank or a high and low temperature alternating box, and subjected to a circulation test at a temperature range of about-10 ℃ to 25 ℃. The measurement by the three-layer calorimeter was carried out once per 100 cycles. The test results after cycling were compared to those before non-cycling and are shown in FIG. 7.
After 500 cycles, the deviation of the melting point and the freezing point of the product is still in the temperature range of 6-8 ℃; before circulation, the enthalpy value is 172KJ/kg, after 500 times of circulation, the enthalpy value is 160kg/kg, and the deviation of the enthalpy value is not higher than +/-10%.
The above-described embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any way, and other variations and modifications may be made without departing from the spirit of the invention as set forth in the claims.
Claims (10)
1. The accurate temperature control phase change material for short-distance transportation of the medicines is characterized by comprising the following raw materials in parts by weight: 35-45 parts of first phase change main material, 45-55 parts of second phase change main material, 1-5 parts of phase change energy storage nucleating agent, 0.5-5 parts of stabilizer and 10-15 parts of thickener.
2. The precise temperature control phase-change material for short-distance transportation of medicines according to claim 1, wherein the first phase-change main material is n-octanoic acid; the second phase change main material is capric acid.
3. The precise temperature-control phase-change material for short-distance transportation of medicines according to claim 1, wherein the thickening agent is a thermoplastic elastomer.
4. The precise temperature-control phase-change material for short-distance transportation of drugs according to claim 4, wherein the thermoplastic elastomer is selected from one or more of SBS, SEBS 7551 and SEBS 503T.
5. The precise temperature control phase-change material for short-distance transportation of drugs as claimed in claim 1, wherein the phase-change energy storage nucleating agent is selected from one or more of ethylene-vinyl acetate copolymer, cyclic olefin copolymer and poly-1-butene.
6. The precise temperature-control phase-change material for short-distance transportation of medicines according to claim 1, wherein the stabilizer is one or two of sodium stearate and calcium stearate.
7. The utility model provides a medicine short distance transportation is with foldable cold-storage package, its characterized in that, includes collapsible cold-storage package body, collapsible cold-storage package body includes box and case lid, and one side of case lid rotates with the box to be connected, all is equipped with on the other sides of case lid and connects the turn-ups, it can dismantle through the magic subsides with the box to connect the turn-ups, all be equipped with cold-storage interlayer bag on every medial surface of box, also be equipped with cold-storage interlayer bag on the medial surface of case lid, cold-storage interlayer bag facial make-up of dress cold-storage pad, cold-storage pad intussuseption fill claim 1 medicine short distance transportation with accurate accuse temperature phase change material, case lid and cold-storage interlayer bag fixed connection, the inboard bottom surface of box and cold-storage interlayer bag fixed connection, the inboard side of box and cold-storage interlayer bag can dismantle through the magic subsides and connect.
8. The foldable cold storage pack for short-distance drug transportation according to claim 7, wherein a pair of handles are symmetrically arranged on two side surfaces of the box body; a plurality of rubber foot pads are evenly distributed on the bottom surface of the box body.
9. The foldable cold storage pack for short distance transportation of drugs as claimed in claim 7, wherein the middle of four side edges of the bottom surface of the case body are fixed with folded fixing straps with magic tapes at one end, the top surface of the case cover is provided with four pieces of magic tape matt surfaces, and the four pieces of magic tape matt surfaces are arranged corresponding to the straps one to one.
10. The foldable cold storage bag for short-distance medicine transportation according to claim 7, wherein the box body and the box cover are made of an outer oxford fabric, a middle pearl cotton layer and an inner aluminum-plated composite woven fabric.
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| CN114381236A (en) * | 2021-12-15 | 2022-04-22 | 杭州鲁尔新材料科技有限公司 | High-viscosity phase-change material easy to fill |
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Denomination of invention: A precise temperature controlled phase change material for short distance transportation of drugs and a foldable cold storage bag using the material Granted publication date: 20231013 Pledgee: Societe Generale Bank Limited by Share Ltd. Hangzhou branch Pledgor: HANGZHOU RUHR NEW MATERIAL TECHNOLOGY CO.,LTD. Registration number: Y2024980029276 |
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