CN117338508A - Environment-friendly ice bag and manufacturing method thereof - Google Patents
Environment-friendly ice bag and manufacturing method thereof Download PDFInfo
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- CN117338508A CN117338508A CN202311267477.1A CN202311267477A CN117338508A CN 117338508 A CN117338508 A CN 117338508A CN 202311267477 A CN202311267477 A CN 202311267477A CN 117338508 A CN117338508 A CN 117338508A
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- bag
- microcapsule
- palmitic acid
- graphite
- ice bag
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 12
- 239000010439 graphite Substances 0.000 claims abstract description 75
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 75
- IPCSVZSSVZVIGE-UHFFFAOYSA-N palmitic acid group Chemical group C(CCCCCCCCCCCCCCC)(=O)O IPCSVZSSVZVIGE-UHFFFAOYSA-N 0.000 claims abstract description 74
- 239000003094 microcapsule Substances 0.000 claims abstract description 45
- 239000002131 composite material Substances 0.000 claims abstract description 31
- 238000007789 sealing Methods 0.000 claims abstract description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 45
- 239000010410 layer Substances 0.000 claims description 25
- 235000021314 Palmitic acid Nutrition 0.000 claims description 22
- WQEPLUUGTLDZJY-UHFFFAOYSA-N n-Pentadecanoic acid Natural products CCCCCCCCCCCCCCC(O)=O WQEPLUUGTLDZJY-UHFFFAOYSA-N 0.000 claims description 22
- 239000007788 liquid Substances 0.000 claims description 18
- 238000002156 mixing Methods 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 16
- 238000006243 chemical reaction Methods 0.000 claims description 15
- 239000003795 chemical substances by application Substances 0.000 claims description 14
- 150000004702 methyl esters Chemical class 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 239000000203 mixture Substances 0.000 claims description 12
- 239000003921 oil Substances 0.000 claims description 12
- 238000009825 accumulation Methods 0.000 claims description 11
- 229910052799 carbon Inorganic materials 0.000 claims description 11
- 239000000243 solution Substances 0.000 claims description 10
- 235000015112 vegetable and seed oil Nutrition 0.000 claims description 10
- 239000004952 Polyamide Substances 0.000 claims description 9
- 239000007864 aqueous solution Substances 0.000 claims description 9
- 238000009830 intercalation Methods 0.000 claims description 9
- 230000002687 intercalation Effects 0.000 claims description 9
- 229920002647 polyamide Polymers 0.000 claims description 9
- 238000005507 spraying Methods 0.000 claims description 9
- 239000000126 substance Substances 0.000 claims description 9
- 230000000694 effects Effects 0.000 claims description 8
- 235000019198 oils Nutrition 0.000 claims description 8
- 238000012360 testing method Methods 0.000 claims description 8
- 229920000742 Cotton Polymers 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 7
- 230000007613 environmental effect Effects 0.000 claims description 7
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 6
- 238000011049 filling Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 239000011229 interlayer Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 238000004806 packaging method and process Methods 0.000 claims description 6
- 229920000642 polymer Polymers 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 239000008158 vegetable oil Substances 0.000 claims description 6
- 238000009413 insulation Methods 0.000 claims description 5
- 239000002994 raw material Substances 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims description 4
- 239000004744 fabric Substances 0.000 claims description 4
- 230000001737 promoting effect Effects 0.000 claims description 4
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 3
- 230000002159 abnormal effect Effects 0.000 claims description 3
- 239000003963 antioxidant agent Substances 0.000 claims description 3
- 230000003078 antioxidant effect Effects 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 239000003431 cross linking reagent Substances 0.000 claims description 3
- 230000018044 dehydration Effects 0.000 claims description 3
- 238000006297 dehydration reaction Methods 0.000 claims description 3
- 238000004945 emulsification Methods 0.000 claims description 3
- 239000003995 emulsifying agent Substances 0.000 claims description 3
- 238000010556 emulsion polymerization method Methods 0.000 claims description 3
- 238000005470 impregnation Methods 0.000 claims description 3
- 230000007935 neutral effect Effects 0.000 claims description 3
- 229910017604 nitric acid Inorganic materials 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- 238000007670 refining Methods 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- 239000003381 stabilizer Substances 0.000 claims description 3
- 230000001954 sterilising effect Effects 0.000 claims description 3
- 238000004659 sterilization and disinfection Methods 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- 230000003647 oxidation Effects 0.000 claims description 2
- 238000007254 oxidation reaction Methods 0.000 claims description 2
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 description 9
- 239000012782 phase change material Substances 0.000 description 5
- 239000011232 storage material Substances 0.000 description 5
- 241000196324 Embryophyta Species 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 238000004146 energy storage Methods 0.000 description 4
- 238000004781 supercooling Methods 0.000 description 4
- 239000008399 tap water Substances 0.000 description 4
- 235000020679 tap water Nutrition 0.000 description 4
- 230000007704 transition Effects 0.000 description 4
- 235000019871 vegetable fat Nutrition 0.000 description 4
- 238000004064 recycling Methods 0.000 description 3
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 2
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- KJLLKLRVCJAFRY-UHFFFAOYSA-N mebutizide Chemical compound ClC1=C(S(N)(=O)=O)C=C2S(=O)(=O)NC(C(C)C(C)CC)NC2=C1 KJLLKLRVCJAFRY-UHFFFAOYSA-N 0.000 description 2
- 239000010446 mirabilite Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 241001133760 Acoelorraphe Species 0.000 description 1
- 235000019482 Palm oil Nutrition 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 235000019270 ammonium chloride Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011218 binary composite Substances 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 239000003240 coconut oil Substances 0.000 description 1
- 235000019864 coconut oil Nutrition 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 238000000113 differential scanning calorimetry Methods 0.000 description 1
- 230000005496 eutectics Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 229910001867 inorganic solvent Inorganic materials 0.000 description 1
- 239000003049 inorganic solvent Substances 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000003346 palm kernel oil Substances 0.000 description 1
- 235000019865 palm kernel oil Nutrition 0.000 description 1
- 239000002540 palm oil Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- -1 salt hydrates Chemical class 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000003549 soybean oil Substances 0.000 description 1
- 235000012424 soybean oil Nutrition 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- 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
- C09K5/063—Materials absorbing or liberating heat during crystallisation; Heat storage materials
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
- A61F7/10—Cooling bags, e.g. ice-bags
- A61F7/106—Cooling bags, e.g. ice-bags self-cooling, e.g. using a chemical reaction
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D3/00—Devices using other cold materials; Devices using cold-storage bodies
- F25D3/02—Devices using other cold materials; Devices using cold-storage bodies using ice, e.g. ice-boxes
- F25D3/06—Movable containers
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
- A61F7/10—Cooling bags, e.g. ice-bags
- A61F7/103—Cooling bags, e.g. ice-bags refillable
- A61F2007/105—Closures specially adapted for icebags or packs
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Animal Behavior & Ethology (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Packages (AREA)
Abstract
The invention discloses an environment-friendly ice bag and a manufacturing method thereof, wherein the ice bag comprises a bag body with a three-layer structure, a binding belt and a microcapsule bag, the microcapsule bag is accommodated in a sealing layer in the bag body, a solution is also arranged in the sealing layer, the microcapsule bag is soaked in the solution, and a palmitic acid-graphite composite material is coated in the microcapsule bag.
Description
Technical Field
The invention relates to the field of ice bag processing, in particular to an environment-friendly ice bag and a manufacturing method thereof.
Background
The ice bag is widely applied to cold compress in medical treatment and daily household life, mainly utilizes the cold insulation characteristic of substances in the ice bag to cool contact objects or skin in an emergency way, the appearance of the existing ice bag adopts petroleum derived plastics, the internal cold insulation material adopts ammonium nitrate which is a flammable and explosive chemical substance, and if the ammonium nitrate ice bag is impacted severely or influenced by external factors such as high temperature and the like in the using process, explosion or fire disaster can be caused, and the safety of users is threatened. And the ammonium nitrate ice bag is a disposable product, and can not be refilled or reused after being used, which may cause resource waste and environmental burden, and recovery after being used is also a problem, and toxic gas can be generated if the ammonium nitrate ice bag is directly discharged. In the European Union, severe standards are formulated in recent years to limit mouths of ammonium nitrate ice bags, and increasing environmental protection requirements lead to the disadvantage of ammonium nitrate ice bag production enterprises in China on foreign trade, a great amount of ammonium nitrate ice bags are overstocked to be sold, the existing product mode and production mode must be changed for quick return of funds, and how to manufacture and produce environmental protection ice bags meeting global environmental protection requirements becomes a problem to be solved urgently by ice bag manufacturers.
For the selection of cold-preserving substances, besides ammonium nitrate, eutectic salt hydrates such as mirabilite and the like are also used, but the low-cost ice bag has short cold compress time and high supercooling degree, is easy to freeze when the cold storage temperature is low before use, can corrode the ice bag body, has short shelf life, is also a disposable ice bag, cannot be recycled, has low environmental protection degree, cannot meet the environmental protection requirement, and is likely to face the restriction of high-standard admittance rules in the future.
Disclosure of Invention
Aiming at the technical problems, the invention provides an environment-friendly ice bag, which comprises: the bag body is three-layered and comprises an outer layer, an interlayer and a sealing layer, a cotton pad is arranged between the outer layer and the interlayer, and a zipper opening is formed in the upper part of the outer layer and used for taking and placing the cotton pad;
the binding band comprises a telescopic band arranged at the top of the bag body, a female magic tape surface arranged at the tail of the telescopic band and a male magic tape surface arranged at the bottom of the bag body, wherein the male magic tape surface is matched with the female magic tape surface in a proper manner;
the microcapsule bag is accommodated in the sealing layer, a solution is further arranged in the sealing layer, the microcapsule bag is soaked in the solution, and the microcapsule bag is internally coated with a palmitic acid-graphite composite material.
Preferably, the outer layer is a skin-friendly fabric.
Preferably, the graphite in the palmitic acid-graphite composite material is loose porous expanded graphite.
Preferably, the solution is an aqueous solution of an oil containing methyl ester.
Preferably, the top of the bag body is provided with a first handle, the bottom of the bag body is provided with a second handle, the first handle is identical to the second handle in structure, the magic tape is arranged on the second handle, and the telescopic strap is arranged on the first handle.
Preferably, the microcapsule is made of a polymer continuous film, and the polymer is one or a combination of two of polyamide and polyurethane.
The invention also provides a manufacturing method of the environment-friendly ice bag, which comprises the following steps:
s1, preparing expanded graphite by a chemical intercalation method, wherein the raw material is high-carbon flake graphite, preparing a mixture of sulfuric acid and nitric acid as an intercalation agent, storing the mixture in a reaction barrel, adding the high-carbon flake graphite into the reaction barrel by adopting the chemical intercalation method for rows of oxidation, continuously stirring until the mixture is neutral by water washing, converting the oxidized high-carbon flake graphite into preliminary formed expanded graphite, carrying out centrifugal separation on rows of expanded graphite, drying the preliminary formed expanded graphite in a vacuum oven at the temperature of 60-65 ℃ after dehydration, and carrying out expansion stripping for 60S in a refining furnace at the temperature of more than 900 ℃ to obtain the expanded graphite, wherein the average particle size of the expanded graphite is less than 50 mu m, the density is 300kg/m < 3 >, and the thermal conductivity is 4-100W/mK;
s2, preparing a palmitic acid-graphite composite material by a vacuum impregnation method, namely pouring the palmitic acid liquid with the purity of more than 98% into a vacuum reaction kettle, starting a vacuum pump, vacuumizing for 1h, opening a material valve, introducing the palmitic acid liquid into the vacuum reaction kettle, covering the surface of the expanded graphite, penetrating of the palmitic acid liquid into a porous structure of the expanded graphite, and opening the vacuum pump again to exhaust after the reaction is finished, so as to exhaust air and liquid;
s3, preparing a microcapsule by an emulsion polymerization method, mixing polyamide and a cross-linking agent, adding an emulsifying agent and a stabilizing agent, and continuously stirring in the emulsification process until the microcapsule is formed;
s4, coating a palmitic acid-graphite composite material by a spraying method, contacting the palmitic acid-graphite composite material with polyamide continuous film microcapsules, uniformly spraying the palmitic acid-graphite composite material on the surfaces of the microcapsules by using spraying equipment, and heating and drying the coated microcapsules by using an ultraviolet curing agent to prepare microcapsule bags;
s5, mixing the microcapsule with an oil aqueous solution containing methyl ester, selecting vegetable oil with the methyl ester content of more than 50%, adding pure water for mixing, adding an antioxidant for promoting mixing, pouring the mixture into the microcapsule for mixing after full mixing, and finally preparing cold accumulation liquid;
s6, filling rows into bags, pouring cold accumulation liquid into a bag body processed in advance by using a filling machine, and carrying out rows of packaging treatment;
and S7, , carrying out leak-proof detection, turning over the processed finished product ice bag on a conveying track once, carrying out inversion shaking, transporting to weight test equipment, recording the ice bag with abnormal data, carrying out spot check to test the cold insulation effect of the ice bag, and finally carrying out sterilization packaging on the qualified ice bag .
The beneficial effects are that:
1. the invention adopts the microcapsule embedded palmitic acid-graphite composite material as the cold storage agent, and the palmitic acid is a plant-based phase change material, so that the environment is better protected compared with the existing ammonium nitrate and mirabilite ice bags, and the microcapsule embedded mode can effectively improve the heat conductivity of the phase change material, so that a longer-time cold insulation effect is obtained, and the environment is better protected compared with other disposable ice bags.
2. The invention adopts the expanded graphite to prepare the composite material, can effectively reduce the strong taste of the plant-based phase change material such as palmitic acid, and can effectively realize flame-retardant protection.
3. The invention adopts the aqueous solution of the oil containing methyl ester as the solvent to be mixed with the microcapsule bag of the palmitic acid-graphite, can reduce the supercooling degree of the cold storage agent, can not generate icing phenomenon even if the refrigerator is refrigerated at ℃ below zero in a refrigerator of 10 ℃, reduces the requirement on transportation and storage conditions by steps, and reduces the cost.
Drawings
The invention will be further described with reference to the accompanying drawings.
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a graph of thermal conductivity at different levels of graphite;
FIG. 3 is a graph of differential scanning calorimetry for 500 cycles of the present invention;
FIG. 4 is a graph showing the cooling profile before and after 500 cycles of the present invention.
The figures represent the numbers:
1. the female face of the magic tape 2, the telescopic band 3, the bag body 4, the zip fastener mouth 5, first handle, 6, second handle, 7, the public face of magic tape.
Detailed Description
Various aspects of the invention are described in further detail below in line of .
Unless defined or otherwise indicated, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. Furthermore, methods and materials similar or equivalent to those described can be used in the methods of the present invention.
As shown in fig. 1, the invention provides an environment-friendly ice bag, which comprises a bag body 3, wherein the bag body 3 comprises three layers, and comprises an outer layer and an interlayer, a sealing layer is arranged between the outer layer and the interlayer, and a zipper opening 4 is formed in the upper part of the outer layer and used for taking and placing the cotton pad;
the binding band comprises a telescopic band 2 arranged at the top of the bag body 3, a magic tape female surface 1 arranged at the tail of the telescopic band 2 and a magic tape male surface 7 arranged at the bottom of the bag body 3, wherein the magic tape male surface 7 is suitably matched with the magic tape female surface 1;
the microcapsule bag is accommodated in the sealing layer, a solution is further arranged in the sealing layer, the microcapsule bag is soaked in the solution, and the microcapsule bag is internally coated with a palmitic acid-graphite composite material.
Because the traditional ice bag is mostly disposable, the requirement on the use reliability is not high, the aim of manufacturing is not repeated for a plurality of times, and the traditional ice bag is mostly of a single-layer structure, the invention aims at designing an environment-friendly anti-corrosion ice bag, and the anti-corrosion ice bag belongs to a cold and hot compress dual-purpose bag, can be used as an ice compress bag and a hot compress bag, and can be used as an ice compress bag by pre-cooling lines, and can be used by lines of cold compress by putting the anti-corrosion ice bag into a freezing chamber of more than half an hour or more than minus ten degrees for more than 15 minutes in advance (compared with the traditional ice bag, the anti-corrosion ice bag has lower supercooling degree, and can not freeze for more than 1 hour as long as more than minus ten degrees); when the hot compress bag is used as a hot compress bag, property is firstly preheated, and the hot compress bag is put into a container filled with hot water at 80-100 ℃ for soaking for about 2min, or is put into a microwave oven for heating for about 30 seconds, and is taken out for wiping and drying, so that the hot compress bag can be used for hot compress.
The invention adopts a three-layer design, the outer layer of the ice bag is provided with the zipper opening 4 for placing the cotton pad, the temperature of the surface of the ice bag is mainly prevented from being too low or too high, the ice bag is not stimulated to bear the skin of a user, the existing ice bag solves the problem that the user can open the skin by using the towel , and the cotton pad can be taken out or put in at any time for the user to selectively use, so that the convenience of use is greatly improved.
The outer layer of the invention is skin-friendly fabric, graphite in the palmitic acid-graphite composite material is loose porous expanded graphite, and the solution is an oil aqueous solution containing methyl ester.
Compared with the common plastic outer layer, the skin-friendly fabric has larger friction, and the ice bag is not easy to slide after being fixed.
The top of the bag body 3 is provided with a first handle 5, the bottom of the bag body 3 is provided with a second handle 6, the first handle 5 has the same structure as the second handle 6, the hook and loop male surface 7 is arranged on the second handle 6, and the telescopic strap 2 is arranged on the first handle 5.
The invention adopts the design of the elastic telescopic band 2 and the magic tape, can be conveniently and flexibly adjusted according to different fixing positions , and can realize fixation by winding the telescopic band 2 through the first handle 5 and the second handle 6 and then bonding with the male surface of the magic tape. The female surface of the magic tape is arranged at the tail part of the telescopic belt 2, the occupied area is large, and even one surface of the whole telescopic belt 2 can be designed to be the female surface of the magic tape, so that the female surface of the magic tape can be bonded with the male surface of the magic tape after being wound with turns.
The microcapsule bag is made of a polymer continuous film, and the polymer is one or a combination of two of polyamide and polyurethane.
The invention adopts the microcapsule package treated by the palmitic acid-graphite composite material microcapsule as a solvent to be mixed with an oil aqueous solution containing methyl ester. As the cold accumulation content of the ice bag, the palmitic acid is an organic fatty acid, is more environment-friendly than inorganic solvents such as aqueous solutions in the prior art, and is a plant-based phase change material which naturally exists and is extracted from plants (such as palm oil, palm kernel oil and coconut oil of palm trees and the like). As an energy storage material, the palmitic acid has higher phase change enthalpy, no toxicity, low vapor pressure, no supercooling degree, good thermochemical stability, wide melting point range and low cost of raw materials, and the main added cost is to change a processing line, and the investment can be used for a long time, so that the economic benefit is greatly improved in comprehensive view.
Palmitic acid as an energy storage material has the main disadvantages to be overcome: 1, the thermal conductivity of palmitic acid is low, and heating and refrigerating are very slow; 2, the smell of palmitic acid is unpleasant and may cause discomfort to the user; and 3, the palmitic acid is inflammable, and potential safety hazards can exist. Therefore, in view of the above three disadvantages, the present invention does not directly use palmitic acid as an energy storage material in an ice bag, but adopts a binary composite mode, obtains a composite phase change material of palmitic acid, ensures a phase change temperature, and overcomes the above disadvantages, the present invention adopts a palmitic acid-graphite composite material, adsorbs palmitic acid as a supporting material by using a porous structure of expanded graphite, removes the taste of palmitic acid, and can enhance the overall thermal conductivity, and the present invention experiments the thermal conductivity (thermal conductivity) of the palmitic acid-graphite composite material produced by adding different mass fractions, including 5wt%,10wt%,15wt% and 20wt% of graphite input, and as a result shows that the thermal conductivity of the palmitic acid-graphite composite material containing 20wt% of graphite is 2.5 times that of pure palmitic acid.
The latent heat value of the palmitic acid-graphite composite material is 256J/g through measurement of a differential scanning calorimeter, which shows that the palmitic acid-graphite composite material prepared by the invention has great potential in the low-temperature energy storage direction.
The invention is used in the scene of multiple recycling, so the thermodynamic physical property change after recycling is also tested to detect the recycling stability of the invention.
In the experiment, the invention selects the finished cold accumulation content to be placed in a line 500-time circulation test box at high and low temperature, and the thermo-physical property of the circulated sample is measured by a differential scanning calorimeter. As shown in fig. 3-4, after the circulation, A1 is before the circulation, and the final result shows that the phase transition temperature T1 of the composite material after 500 times of circulation test is improved compared with the original phase transition temperature T2, and the phase transition latent heat value after the circulation is slightly reduced compared with the original phase transition latent heat value. After 500 times of circulation, only latent heat is slightly lost, and the reduced data is smaller, so that the heat loss caused by volatilization in the heating process is presumably caused, and from experimental results, the temperature drop of the content of the ice bag after multiple times of use is less, the phase change platform is stable, the fluctuation range of the thermophysical performance is small, and the ice bag has excellent circulation stability.
The invention also provides a manufacturing method of the environment-friendly ice bag, which comprises the following steps:
s1, preparing expanded graphite by a chemical intercalation method, namely preparing a mixture of sulfuric acid and nitric acid, wherein the raw material is 20wt% of high-carbon flake graphite, storing the mixture in a reaction barrel as an intercalation agent, adding the high-carbon flake graphite into the reaction barrel by adopting the chemical intercalation method, oxidizing the high-carbon flake graphite in rows at a temperature of 35 ℃, stirring for 20min, setting the rotating speed of a stirrer at 300r/min, washing the high-carbon flake graphite to be neutral, converting the oxidized high-carbon flake graphite into the expanded graphite, performing centrifugal separation in rows, drying the expanded graphite in a vacuum oven at a temperature of 60-65 ℃ after dehydration, and performing expansion stripping for 60S in a refining furnace at a temperature of more than 900 ℃ to obtain the expanded graphite, wherein the average particle size of the expanded graphite is less than 50 mu m, the density is 300kg/m < 3 >, and the heat conductivity is 4-100W/mK;
s2, preparing a palmitic acid-graphite composite material by a vacuum impregnation method, namely pouring the palmitic acid liquid with the purity of more than 98% into a vacuum reaction kettle, starting a vacuum pump, vacuumizing for 1h, opening a material valve, introducing the palmitic acid liquid into the vacuum reaction kettle, covering the surface of the expanded graphite, penetrating of the palmitic acid liquid into a porous structure of the expanded graphite, and opening the vacuum pump again to exhaust after the reaction is finished, so as to exhaust air and liquid;
s3, preparing a microcapsule by an emulsion polymerization method, mixing polyamide and a cross-linking agent, adding an emulsifying agent and a stabilizing agent, and continuously stirring in the emulsification process until the microcapsule is formed;
s4, coating a palmitic acid-graphite composite material by a spraying method, contacting the palmitic acid-graphite composite material with a polyamide continuous film bag, uniformly spraying the palmitic acid-graphite composite material on the surface of the microcapsule by using spraying equipment, and heating and drying the coated microcapsule by using an ultraviolet curing agent to prepare a microcapsule bag;
s5, mixing the microcapsule with an oil aqueous solution containing methyl ester, selecting vegetable oil with the methyl ester content of more than 50%, adding pure water for mixing, adding an antioxidant for promoting mixing, pouring the mixture into the microcapsule for mixing after full mixing, and finally preparing cold accumulation liquid;
s6, filling rows into bags, pouring cold accumulation liquid into the bag body 3 which is processed in advance by using a filling machine, and promoting rows of packaging treatment;
and S7, , carrying out leakage-proof detection, namely turning over the processed finished product ice bag on a conveying track once, carrying out inversion shaking, conveying to weight test equipment, recording the ice bag with abnormal data, carrying out spot check to test the cold insulation effect of the ice bag, and carrying out sterilization packaging on the qualified ice bag .
The invention selects the vegetable oil containing methyl ester, mainly because the methyl ester is a single-carbon chain short-chain fatty acid which can be dissolved in water, the microcapsule bag formed by palmitic acid-graphite and the vegetable oil are used as a nuclear agent to be mixed with water, and the nuclear agent can reduce the freezing temperature, so that the solution is not easy to freeze at low temperature. The water in the invention adopts pure water, which is convenient for controlling the mixed components, and in practice, because some impurities in tap water can be used as natural nuclear agent, under the condition of using tap water, partial cold accumulation effect can be achieved without adding vegetable oil, and the cost can be reduced, but because the impurities in tap water are unstable and uncontrollable, the detection of the late ice bag is not facilitated, and the cold accumulation effect is also unstable, the invention adopts pure water.
The invention adds vegetable fat and oil to reduce cost, palmitic acid-graphite composite material is the best nuclear agent for pure water, but the cost of using palmitic acid-graphite composite material as nuclear agent is too high, unfavorable for ice bag pricing, so the invention adds vegetable fat and oil as supplementary nuclear agent, can greatly reduce cost while obtaining cold accumulation effect, and vegetable fat and oil have no corrosiveness, the material requirement for ice bag is very low, in addition, soybean oil is selected in vegetable fat and oil, can obtain the best balance between cost and effect, in addition, the invention can also adopt 31-39% urea and 9-15% ammonium chloride, relative proportion is weight, this kind of mixture forms another nuclear agent, then add 44-60% tap water or pure water to mix, form another embodiment of the invention, this supplementary nuclear agent can fully utilize existing stock raw materials to reprocess, one step reduces cost, and is easy to mass manufacture.
The foregoing is merely illustrative of the present invention, and the scope of the invention is not limited thereto, as , which is well within the scope of the present invention, can be easily modified or replaced by those skilled in the art, and is intended to be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. An environment-friendly ice bag, which is characterized in that: comprising
The bag body is three-layered and comprises an outer layer, an interlayer and a sealing layer, a cotton pad is arranged between the outer layer and the interlayer, and a zipper opening is formed in the upper part of the outer layer and used for taking and placing the cotton pad;
the binding band comprises a telescopic band arranged at the top of the bag body, a female magic tape surface arranged at the tail of the telescopic band and a male magic tape surface arranged at the bottom of the bag body, wherein the male magic tape surface is matched with the female magic tape surface in a proper manner;
the microcapsule bag is accommodated in the sealing layer, a solution is further arranged in the sealing layer, the microcapsule bag is soaked in the solution, and the microcapsule bag is internally coated with a palmitic acid-graphite composite material.
2. The environmentally friendly ice bag of claim 1 wherein: the outer layer is a skin-friendly fabric.
3. The environmentally friendly ice bag of claim 2 wherein: the graphite in the palmitic acid-graphite composite material is loose and porous expanded graphite.
4. An environmental friendly ice bag according to claim 3, wherein: the solution is an aqueous solution of oils containing methyl esters.
5. The environmentally friendly ice bag of claim 4 wherein: the top of the bag body is provided with a first handle, the bottom of the bag body is provided with a second handle, the first handle is identical to the second handle in structure, the hook-and-loop fastener male surface is arranged on the second handle, and the telescopic strap is arranged on the first handle.
6. The environmentally friendly ice bag of claim 5 wherein: the microcapsule bag is made of a polymer continuous film, and the polymer is one or a combination of two of polyamide and polyurethane.
7. The method for manufacturing the environment-friendly ice bag according to claim 6, wherein the steps include:
s1, preparing expanded graphite by a chemical intercalation method, wherein the raw material is high-carbon flake graphite, preparing a mixture of sulfuric acid and nitric acid as an intercalation agent, storing the mixture in a reaction barrel, adding the high-carbon flake graphite into the reaction barrel by adopting the chemical intercalation method for rows of oxidation, continuously stirring until the mixture is neutral by water washing, converting the oxidized high-carbon flake graphite into preliminary formed expanded graphite, performing centrifugal separation on rows of expanded graphite, drying the preliminary formed expanded graphite in a vacuum oven at the temperature of 60-65 ℃ in vacuum after dehydration, and performing expansion stripping for 60S in a refining furnace at the temperature of more than 900 ℃ to obtain the expanded graphite, wherein the average particle size of the expanded graphite is smaller than 50 mu m, the density is 300kg/m < 3 >, and the thermal conductivity is 4-100W/mK;
s2, preparing a palmitic acid-graphite composite material by a vacuum impregnation method, namely pouring the palmitic acid liquid with the purity of more than 98% into a vacuum reaction kettle, starting a vacuum pump, vacuumizing for 1h, opening a material valve, introducing the palmitic acid liquid into the vacuum reaction kettle, covering the surface of the expanded graphite, penetrating of the palmitic acid liquid into a porous structure of the expanded graphite, and opening the vacuum pump again to exhaust after the reaction is finished, so as to exhaust air and liquid;
s3, preparing a microcapsule by an emulsion polymerization method, mixing polyamide and a cross-linking agent, adding an emulsifying agent and a stabilizing agent, and continuously stirring in the emulsification process until the microcapsule is formed;
s4, coating a palmitic acid-graphite composite material by a spraying method, contacting the palmitic acid-graphite composite material with polyamide continuous film microcapsules, uniformly spraying the palmitic acid-graphite composite material on the surfaces of the microcapsules by using spraying equipment, and heating and drying the coated microcapsules by using an ultraviolet curing agent to prepare microcapsule bags;
s5, mixing the microcapsule with an oil aqueous solution containing methyl ester, selecting vegetable oil with the methyl ester content of more than 50%, adding pure water for mixing, adding an antioxidant for promoting mixing, pouring the mixture into the microcapsule for mixing after full mixing, and finally preparing cold accumulation liquid;
s6, filling rows into bags, pouring cold accumulation liquid into a bag body processed in advance by using a filling machine, and carrying out rows of packaging treatment;
and S7, , carrying out leak-proof detection, turning over the processed finished product ice bag on a conveying track once, carrying out inversion shaking, transporting to weight test equipment, recording the ice bag with abnormal data, carrying out spot check to test the cold insulation effect of the ice bag, and finally carrying out sterilization packaging on the qualified ice bag .
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| KR20210115230A (en) * | 2020-03-12 | 2021-09-27 | 차진혁 | Eco-friendly packing material for ice pack and preparation thereof |
| CN214967547U (en) * | 2020-09-23 | 2021-12-03 | 张晓燕 | Applicable cooling bag |
| CN115491180A (en) * | 2021-06-17 | 2022-12-20 | 中国科学院理化技术研究所 | Composite phase change coolant and preparation method thereof |
| CN219557769U (en) * | 2023-01-03 | 2023-08-22 | 天津医科大学总医院 | Medical multifunctional ice bag cover |
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| CN208081376U (en) * | 2017-11-28 | 2018-11-13 | 厦门博冷冷链包装制造有限公司 | A kind of hot compress, the dual-purpose ice bag of cold-storage |
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