CN107353879A - A kind of preparation method of liquid-cooled suit phase-change emulsion - Google Patents
A kind of preparation method of liquid-cooled suit phase-change emulsion Download PDFInfo
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- CN107353879A CN107353879A CN201710505370.4A CN201710505370A CN107353879A CN 107353879 A CN107353879 A CN 107353879A CN 201710505370 A CN201710505370 A CN 201710505370A CN 107353879 A CN107353879 A CN 107353879A
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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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- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D13/00—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
- A41D13/002—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches with controlled internal environment
- A41D13/005—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches with controlled internal environment with controlled temperature
- A41D13/0053—Cooled garments
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- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
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- Environmental & Geological Engineering (AREA)
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- Physical Education & Sports Medicine (AREA)
- Textile Engineering (AREA)
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Abstract
The invention discloses a kind of preparation method of liquid-cooled suit phase-change emulsion, comprise the following steps：(1) parts by weight of polyvinyl alcohol 10 20 for heating melting and the parts by weight of emulsifying agent 20 30 are mixed into uniformly to system A；(2) parts by weight of n-tetradecane 10 20, the parts by weight of n-octadecane 40 80 and the parts by weight of distilled water 100 200 are added in another glass container, it is stirring while adding, obtain system B；(3) A is added drop-wise in B, adds the parts by weight of butyl stearate 6 10 afterwards, produced after agitated afterwards, emulsification.Phase-change emulsion viscosity prepared by the present invention is relatively lower, has drag reduction feature, is not easily blocked pipeline, and pump consumption reduces.
Description
Technical field
The invention belongs to heat-transfer matcrial technical field, and in particular to a kind of preparation method of liquid-cooled suit phase-change emulsion.
Background technology
Existing liquid-cooled suit cooling medium is all various forms of coolants, common such as water, mixture of ice and water, vinyl
Mixed liquor and various freezing liquids that ethylene glycol forms with water etc..In order to improve radiating efficiency and effective working time,
For current essentially all of liquid-cooled suit using the practice for reducing coolant temperature, the temperature of coolant is usually zero degree or zero degree
Below.To improve heat conduction efficiency, the heat exchanging pipe net of liquid-cooled suit is typically to be close to skin or the frivolous fabric of phase alternating floor,
Under zero degree or lower coolant temperature, human skin temperature will be caused too low, dress is uncomfortable；Too low skin temperature meeting
The heat transfer in bodily tissue is increased, causes the chatter of body tissue, so as to cause the Human Physiology even sense of discomfort of psychology.
Potential heat functional thermal fluid phase-change material particulate and the mixing of single-phase heat transfer fluid made of distinct methods form solid
Liquid heterogeneous fluid, it is divided into two kinds of phase-change emulsion and microcapsule phase-change emulsion.Compared with common single-phase heat transfer fluid, due to phase
Become in particles of material solid-liquid phase-change process and absorb or discharge latent heat, therefore in its phase transition temperature section, such multiphase fluid-mixing tool
There is very big apparent specific heat, and due to phase transformation particulate fluid flow and the influence of heat transfer, heat-transfer fluid and pipe can be significantly increased
Heat-transfer capability between road wall.Efficient heat transfer medium is can be used as, increases substantially effective apparent specific heat and the heat transfer of fluid
Performance, the size of heat exchanger and cold fluid and hot fluid conveyance conduit is substantially reduced, reduces it and convey power consumption, and so-called efficient heat energy is defeated
Medium is transported, greatly reduces and reduce fluid flow.
At present, there is condensation water problems, the presence of condensed water in most of liquid-cooled suits, and the radiating that can not only influence liquid-cooled suit is imitated
Rate, and greatly reduce the snugness of fit of liquid-cooled suit.How on the premise of liquid-cooled suit heat transfer efficiency is ensured, improve it and wear
Comfortableness, is that our active demands solve the problems, such as.
The content of the invention
It is contemplated that at least solves one of technical problem present in prior art.Therefore, the present invention provides a kind of liquid
The preparation method being taken cold with phase-change emulsion, it is therefore an objective to reduce viscosity, avoid blocking liquid-cooled suit pipeline.
To achieve these goals, the technical scheme taken of the present invention is：
A kind of preparation method of liquid-cooled suit phase-change emulsion, comprises the following steps：
(1) will heat melting polyvinyl alcohol 10-20 parts by weight and emulsifying agent 20-30 parts by weight be mixed into uniformly to
System A；
(2) n-tetradecane 10-20 parts by weight, n-octadecane 40-80 parts by weight and distilled water 100-200 parts by weight are mixed
Obtain system B；
(3) A is added drop-wise in B, and is heated to 30-45 DEG C, afterwards addition butyl stearate 6-10 parts by weight, agitated,
Produced after emulsification.
If handled before adding butyl stearate without low-temperature heat, the time of stirring and emulsifying can be extended, and most
The product viscosity obtained eventually is more relatively high, if heating-up temperature is too high, the stability of final phase-change emulsion can be caused not
Profit influences.
The stirring is stirred using emulsification pretreatment machine.
The rotating speed of the stirring is 9000-10000rpm/min.High stir speed (S.S.), ensure that the particle diameter of phase-change emulsion is enough
It is small, avoid emulsion droplet diameter excessive, the phenomenon of easy blocking pipeline.
The mass ratio of the n-tetradecane and n-octadecane is 1:2-4, it is therefore an objective to make final obtained phase-change emulsion shape
State is stable.
The emulsifying agent is polysorbas20 and/or TA-20 emulsifying agents.Purpose is promotion system emulsification.
The mass ratio of the TA-20 emulsifying agents and polysorbas20 is 2-5:1.Mixed using two kinds of emulsifying agents of this ratio, energy
Enough enable its homogeneous system formed with polyvinyl alcohol to reduce the emulsification times for preparing final phase-change emulsion, and cause
The phase-change emulsion stability finally obtained is more preferable.
Methods described adds the sodium chloride of 0.1-0.5 parts by weight before being additionally included in step (3) stirring.A small amount of sodium metal salt
Addition, it is possible to increase the dispersing uniformity of emulsion, improve emulsifying power.
Butyl stearate is nontoxic as lubricant, by increasing capacitance it is possible to increase finally gives the heat endurance of phase-change emulsion.
Polyvinyl alcohol should use pharmaceutical grade Polyethylene alcohol, and it disagrees chemical industry rank polyvinyl alcohol, and it belongs to safe height
Molecular material, it is nontoxic to human body, have no side effect, there is good biocompatibility.
Beneficial effects of the present invention：Using cooling circulation liquid of the phase-change emulsion of the present invention as liquid-cooled suit, have such as
Under a little：(1) material non-toxic is corrosion-free, steady chemical structure；(2) material price is cheap, and raw material sources are wide；(3) storage density of cold
Greatly, degree of supercooling very little, can solve the problem that liquid-cooled suit wears uncomfortable type problem；(4) conductivity of heat is strong, far superior to monophasic fluid
Water.It is smaller than the flow needed for individual event fluid water by the use of it as heat transfer medium, refrigerating plant and heat exchanger tube in liquid-cooled suit can be reduced
The size of road network.The phase-change emulsion viscosity of the present invention is relatively lower, has drag reduction feature, is not easily blocked pipeline, and pump consumption reduces.
During being used as coolant, the noxious materials such as formaldehyde will not be produced, it is safe.
Embodiment
Below by the description to embodiment, the embodiment of the present invention is described in further detail, purpose
Be to aid in those skilled in the art has more complete, accurate and deep understanding, and helps to design of the invention, technical scheme
In its implementation.
The present invention provides a kind of phase-change emulsion, includes the raw material of following parts by weight：
N-tetradecane 10-20 parts, n-octadecane 40-80 parts, emulsifying agent 20-30 parts, butyl stearate 6-10 parts, polyethylene
Alcohol 10-20 parts and water 100-200 parts.
The mass ratio of n-tetradecane and n-octadecane is preferably 1:2-4.Emulsifying agent is preferably polysorbas20 and/or TA-20 breasts
Agent.The mass ratio of TA-20 emulsifying agents and polysorbas20 is 2-5:1.
It is described in detail below by preferred embodiment：
Embodiment 1
A kind of phase-change emulsion, include the raw material of following parts by weight：
10 parts of n-tetradecane, 40 parts of n-octadecane, 20 parts of TA-20 emulsifying agents, 6 parts of butyl stearate, 12 parts of polyvinyl alcohol
With 120 parts of water.
The preparation method of the phase-change emulsion comprises the following steps：
(1) it is in molten condition by polyvinyl alcohol heating, then takes polyvinyl alcohol and TA-20 after the heating melting of 12 parts by weight
The parts by weight of emulsifying agent 20 are added in glass container, and magnetic agitation is into homogeneous system A；
(2) parts by weight of n-tetradecane 10, the parts by weight of n-octadecane 40 and the parts by weight of distilled water 120 are added into another glass to hold
It is stirring while adding in device, obtain system B；
(3) A is slowly added drop-wise in B, after being added dropwise, water bath with thermostatic control is heated to 30 DEG C, adds stearic acid fourth afterwards
The parts by weight of ester 6, are stirred with high-shear emulsion machine, speed of agitator 9000rpm/min, and stabilization can be obtained after persistently emulsifying 1.2h
The excellent phase-change emulsion of property.
Embodiment 2
A kind of phase-change emulsion, include the raw material of following parts by weight：
20 parts of n-tetradecane, 60 parts of n-octadecane, 20 parts of TA-20 emulsifying agents, polysorbas20 be 10 parts, 8 parts of butyl stearate,
150 parts of 15 parts of polyvinyl alcohol and water.
The preparation method of the phase-change emulsion comprises the following steps：
(1) it is in molten condition by polyvinyl alcohol heating, then takes the polyvinyl alcohol after the heating melting of 15 parts by weight, 10 weight
Part polysorbas20 and the parts by weight of TA-20 emulsifying agents 20 are added in glass container, and magnetic agitation is into homogeneous system A；
(2) parts by weight of n-tetradecane 20, the parts by weight of n-octadecane 60 and the parts by weight of distilled water 150 are added into another glass to hold
It is stirring while adding in device, obtain system B；
(3) A is slowly added drop-wise in B, after being added dropwise, water bath with thermostatic control is heated to 40 DEG C, adds stearic acid fourth afterwards
The parts by weight of ester 8, are stirred with high-shear emulsion machine, speed of agitator 9500rpm/min, and stability can be obtained after persistently emulsifying 1h
Excellent phase-change emulsion.
Embodiment 3
A kind of phase-change emulsion, include the raw material of following parts by weight：
20 parts of n-tetradecane, 40 parts of n-octadecane, 25 parts of TA-20 emulsifying agents, polysorbas20 be 5 parts, 10 parts of butyl stearate,
180 parts of 15 parts of polyvinyl alcohol and water.
The preparation method of the phase-change emulsion comprises the following steps：
(1) it is in molten condition by polyvinyl alcohol heating, then takes the polyvinyl alcohol after the heating melting of 15 parts by weight, 5 weight
Part polysorbas20 and the parts by weight of TA-20 emulsifying agents 25 are added in glass container, and magnetic agitation is into homogeneous system A；
(2) parts by weight of n-tetradecane 20, the parts by weight of n-octadecane 40 and the parts by weight of distilled water 180 are added into another glass to hold
It is stirring while adding in device, obtain system B；
(3) A is slowly added drop-wise in B, after being added dropwise, water bath with thermostatic control is heated to 45 DEG C, adds stearic acid fourth afterwards
The parts by weight of ester 10, are stirred with high-shear emulsion machine, speed of agitator 10000rpm/min, can be obtained surely after persistently emulsifying 0.9h
Qualitative excellent phase-change emulsion.
Embodiment 4
The present embodiment and the difference of embodiment 1 are, do not add butyl stearate in the present embodiment.
Embodiment 5
The present embodiment and the difference of embodiment 1 are that butyl stearate is added in step (1) in the present embodiment.
Embodiment 6
The present embodiment and the difference of embodiment 1 are that butyl stearate is added in step (2) in the present embodiment.
Embodiment 7
The present embodiment and the difference of embodiment 1 are that butyl stearate does not heat before adding in the present embodiment
Processing.
Embodiment 8
The present embodiment and the difference of embodiment 1 are that the present embodiment is additionally added chlorine while butyl stearate is added
Change the parts by weight of sodium 0.3.
Under the conditions of temperature is 25 DEG C, phase-change emulsion prepared by the present invention is mixed with water, be 15% to mass fraction,
20%th, the viscosity (/mPaS) of phase-change emulsion prepared by 30% embodiment 1 to 8 is tested, test result such as table 1 below
It is shown.
| Mass fraction is 15% | Mass fraction is 20% | Mass fraction is 30% | |
| Embodiment 1 | 22.18 | 36.56 | 65.23 |
| Embodiment 2 | 23.21 | 35.98 | 66.01 |
| Embodiment 3 | 22.83 | 36.05 | 65.76 |
| Embodiment 4 | 32.15 | 42.29 | 71.96 |
| Embodiment 5 | 30.32 | 39.16 | 69.25 |
| Embodiment 6 | 29.23 | 39.82 | 69.83 |
| Embodiment 7 | 28.16 | 38.52 | 67.25 |
| Embodiment 8 | 23.59 | 36.73 | 66.21 |
As can be seen from the above table, the phase-change emulsion that prepared by 1-3 of the embodiment of the present invention is with respect to phase transformation prepared by embodiment 4-6
Emulsus fluid viscosity is smaller, and flow regime is relatively more preferable.The coolant of liquid-cooled suit is may be used as, because viscosity is relatively smaller, no
Easily block the pipeline of liquid-cooled suit.Compared with conventional fluid water, it conducts heat phase-change emulsion prepared by embodiment 1-3 and embodiment 8
Ability can increase 4-5 times.The heat-transfer capability of coolant prepared by embodiment 4-7 can increase 2-4 times.Wherein, prepared by embodiment 8
Phase-change emulsion dispersing morphology is more preferable.
Phase-change emulsion prepared by embodiment 1-3 and embodiment 8 centrifuges 1h, without bright under the conditions of rotating speed 4000r/min
Aobvious lamination.Phase-change emulsion prepared by embodiment 4-7 centrifuges 1h under the conditions of rotating speed 3000r/min, without obvious layering
Phenomenon.
The present invention is exemplarily described above.Obviously, present invention specific implementation is not subject to the restrictions described above.
As long as employ the improvement of the various unsubstantialities of inventive concept and technical scheme of the present invention progress；Or it is not improved, will
The above-mentioned design and technical scheme of the present invention directly applies to other occasions, within protection scope of the present invention.
Claims (7)
1. a kind of preparation method of liquid-cooled suit phase-change emulsion, it is characterised in that comprise the following steps：
(1) the polyvinyl alcohol 10-20 parts by weight for heating melting and emulsifying agent 20-30 parts by weight are mixed into uniformly to system
A；
(2) n-tetradecane 10-20 parts by weight, n-octadecane 40-80 parts by weight and distilled water 100-200 parts by weight are uniformly mixed so as to obtain
System B；
(3) A is added drop-wise in B, and is heated to 30-45 DEG C, add butyl stearate 6-10 parts by weight, agitated, emulsification afterwards
After produce.
2. the preparation method of liquid-cooled suit phase-change emulsion according to claim 1, it is characterised in that the stirring, which uses, cuts
Mulser is cut to be stirred.
3. the preparation method of liquid-cooled suit phase-change emulsion according to claim 2, it is characterised in that the rotating speed of the stirring
For 9000-10000rpm/min.
4. the preparation method of liquid-cooled suit phase-change emulsion according to claim 1, it is characterised in that the n-tetradecane with
The mass ratio of n-octadecane is 1:2-4.
5. the preparation method of liquid-cooled suit phase-change emulsion according to claim 1, it is characterised in that the emulsifying agent is to tell
Temperature 20 and/or TA-20 emulsifying agents.
6. the preparation method of liquid-cooled suit phase-change emulsion according to claim 5, it is characterised in that the TA-20 emulsifications
The mass ratio of agent and polysorbas20 is 2-5:1.
7. the preparation method of liquid-cooled suit phase-change emulsion according to claim 1, it is characterised in that methods described also includes
The sodium chloride of 0.1-0.5 parts by weight is added before step (3) stirring.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710505370.4A CN107353879A (en) | 2017-06-28 | 2017-06-28 | A kind of preparation method of liquid-cooled suit phase-change emulsion |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710505370.4A CN107353879A (en) | 2017-06-28 | 2017-06-28 | A kind of preparation method of liquid-cooled suit phase-change emulsion |
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| CN107353879A true CN107353879A (en) | 2017-11-17 |
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| CN201710505370.4A Pending CN107353879A (en) | 2017-06-28 | 2017-06-28 | A kind of preparation method of liquid-cooled suit phase-change emulsion |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109777366A (en) * | 2019-01-30 | 2019-05-21 | 杭州鲁尔新材料科技有限公司 | A kind of preparation method of the pumpable formula phase transformation lotion of low temperature |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080166555A1 (en) * | 2005-01-18 | 2008-07-10 | Basf Aktiengesellschaft | Coarse-Particle Microcapsule Preparation |
| CN103937461A (en) * | 2014-04-29 | 2014-07-23 | 华南理工大学 | Phase change micro-capsule for clothing thermoregulation as well as preparation method and application thereof |
| CN103555281B (en) * | 2013-10-24 | 2016-02-03 | 天津工业大学 | A kind of building film material energy-saving and temperature-regulating microcapsule and preparation method thereof |
-
2017
- 2017-06-28 CN CN201710505370.4A patent/CN107353879A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080166555A1 (en) * | 2005-01-18 | 2008-07-10 | Basf Aktiengesellschaft | Coarse-Particle Microcapsule Preparation |
| CN103555281B (en) * | 2013-10-24 | 2016-02-03 | 天津工业大学 | A kind of building film material energy-saving and temperature-regulating microcapsule and preparation method thereof |
| CN103937461A (en) * | 2014-04-29 | 2014-07-23 | 华南理工大学 | Phase change micro-capsule for clothing thermoregulation as well as preparation method and application thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109777366A (en) * | 2019-01-30 | 2019-05-21 | 杭州鲁尔新材料科技有限公司 | A kind of preparation method of the pumpable formula phase transformation lotion of low temperature |
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Application publication date: 20171117 |