CN108276965A - A kind of phase-change microcapsule and preparation method thereof for cable temperature control - Google Patents
A kind of phase-change microcapsule and preparation method thereof for cable temperature control Download PDFInfo
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Abstract
The present invention relates to the preparing technical fields of phase-change material, disclose a kind of phase-change microcapsule and preparation method thereof for cable temperature control.Including following preparation process：（1）Porous expanded perlite is immersed in liquid n-dodecanol, filters, cooling fixation, the capsule-core of phase-change microcapsule is made；（2）Nano-calcium carbonate and coupling agent are added after Lauxite is mixed with vegetable oil, forms stable coating liquid；（3）Coating liquid is dispersed in the surface of capsule-core, phase-change microcapsule material is made in cured heating.Phase-change microcapsule prepared by the present invention is compared with common phase-change microcapsule; grain size degree of refinement is high and distribution is concentrated; good dispersion, package effect is better, and compact structure is good; capsule-core can be protected very well; heat transfer, mass transfer and processing performance are excellent, and entire preparation process is simple and easy to control, and low energy consumption; production cost is low, there is fabulous application prospect in cable temperature control.
Description
Technical field
The present invention relates to the preparing technical field of phase-change material, disclose a kind of phase-change microcapsule for cable temperature control and
Preparation method.
Background technology
Phase-change material can absorb or discharge a large amount of latent heat in phase transition process, can be widely applied to heat storage and temperature
Control field.Wherein Microencapsulated Phase Change Materials are that phase-change material is carried out microencapsulation, not only can effectively increase hot biography
Guide face accumulates, and reduction phase-change material is reacted with external environment, and the variation of time control prepared material volume can occur in phase transformation, gram
The limitation for having taken phase change material application, improves the efficiency that phase-change material uses, and has widened the field of phase-change material application.Cause
It is increasingly paid close attention to by researcher the encapsulated of this phase-change material.
Phase-change material micro-capsule is to coat one layer of performance in solid-liquid phase change material microparticle surfaces using microcapsules technology to stablize
Film and the composite phase-change material with nucleocapsid that constitutes, be made of inner nuclear material and sheathing material two parts.Currently, can
There are crystalline hydrate salt, eutectic hydrated salt, paraffin class, fatty acid, polyethylene glycol etc., the wherein crystallization water as microcapsules kernel
It is more common to close salt and paraffin class；Sheathing material often uses high molecular material, such as Lauxite, melamine resin, polyurethane.Due to
Unique core-shell structure is used, when solid-liquid phase change occurs for the phase-change material of kernel, the shell of outer layer keeps solid-state, thus
Volume change and leakage problem when solving solid-liquid phase change material phase transformation, and it has been also prevented from phase-change material and external environment
Be in direct contact, to play the role of protect phase-change material.
Preparation method currently used for microencapsulated phase change material mainly has interfacial polymerization, situ aggregation method and coacervation
Deng.Interfacial polymerization is that two kinds of reaction monomers are respectively present in lotion immiscible dispersed phase and continuous phase, and are polymerize anti-
It should occur on boundary；In-situ polymerization Master says that monomer and initiator are all placed in the outside of the capsule heart and require the monomer to be
It is soluble, and generate polymer be it is insoluble, polymer deposits capsule heart surface and coat form microcapsules；Coacervation be by
Core material emulsify or be dispersed in the continuous phase dissolved with wall material, under the conditions of make wall material solubility reduce to make it from continuous phase
It separates and to form sticky liquid phase coating and form microcapsules on core material.Since the particle size of microcapsules directly affects its property
Can, fine phase-change microcapsule is the main direction of studying of its development at present.
It is micro- that Chinese invention patent application number 201710342408.0 discloses a kind of organic phase change material of narrow particle diameter distribution
Capsule and preparation method thereof, the method include emulsion emulsifiers stage and microencapsulation stage successively；Wherein, the emulsion emulsifiers stage
Include the following steps：(1) pre-emulsion is prepared；(2) pre-emulsion made from step (1) is pressed through into perforated membrane and obtains emulsion droplet.This
The organic phase change material microcapsules size distribution range of invention is narrow, and average grain diameter is controllable, is easy to industrialized production, cannot be only used for
Building heat preservation energy storage can be also used for the higher temperature-regulating fiber of Particle size requirements, heat-transfer fluid, electronic cooling and biology
The fields such as medical micro element Thermal protection, the microcapsule granule for solving current non-uniform Distribution is difficult to realize uniformly transfer heat, unfavorable
In give full play to the temperature control and thermal storage performance of phase-change material the problem of.
Chinese invention patent application number 201310404790.5 discloses a kind of phase-change microcapsule and preparation method thereof, packet
Oil phase component and water phase components are included, and is made up of free-radical emulsion polymerization method.Oil phase component includes alkanes phase-change material, dredges
Aqueous monofunctional vinyl monomer, hydrophily monofunctional vinyl monomer, hydrophobicity difunctional vinyl's base monomer, oil are molten
Property initiator；Water phase components include emulsifier, suspending agent, deionized water.Oil phase component is mixed with water phase components, high-speed stirred,
Homogeneous latex emulsion is made；Lotion heats up after stirring, then its centrifugal filtration is detached, and is washed with hot ethanol, and separation is dry to constant weight, obtains
To phase-change microcapsule powder.The present invention, as shell, uses the formaldehydeless release of process using vinyl monomer；Pass through free radical emulsion
Phase-change microcapsule is made in polymerization, easy to operate, with short production cycle, and preparation process is simple, it is easier to which industrialized production reduces
Production cost；The phase-change microcapsule grain size being prepared is less than 10 μm, has expanded the application range of phase-change microcapsule.
According to above-mentioned, phase-change material micro-capsule grain size is larger in existing scheme, phase-change material to the package effect of carrier not
Good, compact structure is poor, and conclusion degree is high, and bad dispersibility, phase-change material is easy to fall off, can not protect capsule-core well, and then influence
Heat transfer, mass transfer and the processing performance of material, and traditional preparation process is complex leads to high energy consumption and expensive, mirror
In this, the present invention proposes a kind of phase-change microcapsule and preparation method thereof for cable temperature control, can effectively solve above-mentioned technology
Problem.
Invention content
The wider phase-change material micro-capsule package of application at present is ineffective, and compact structure is poor, and conclusion degree is high, dispersibility
Difference, phase-change material is easy to fall off, can not protect capsule-core well, is used in CABLE MATERIALS the heat transfer of influence material, mass transfer in turn and adds
Work performance.
To solve the above problems, the present invention uses following technical scheme：
The preparation process of a kind of preparation method of phase-change microcapsule for cable temperature control, the phase-change microcapsule is divided into three ranks
Section：（1）The preparation of capsule-core；（2）The preparation of coating liquid；（3）The preparation of phase-change microcapsule；
A kind of preparation method of phase-change microcapsule for cable temperature control, detailed process are：
（1）Porous expanded perlite is immersed in liquid n-dodecanol, n-dodecanol is made to be adsorbed in the micropore of expanded perlite,
Then it is filtered, then is placed in liquid nitrogen cooling fixation rapidly, so that n-dodecanol is combined closely with expanded perlite, be not easy to take off
It falls, the capsule-core of phase-change microcapsule is made；
（2）Lauxite is uniformly mixed with vegetable oil, nano-calcium carbonate and coupling agent is then added, is further dispersed with stirring
To the coating liquid for forming stabilization；
（3）By step（1）Obtained capsule-core is added in coating machine, is then turned on equipment, wind pushing temperature is adjusted, then from a side
By step（2）Obtained coating liquid atomisation and the surface for being dispersed in capsule-core, while spraying into and curing from another side
Agent solution makes Lauxite cure, and forms core-shell structure, stops heating after held for some time, through cooling down, phase transformation is made
Microencapsulation material.
Preferably, step（1）The pore morphology of the porous expanded perlite is open bore, and it is 0.1 ~ 0.2mm's to take grain size
Particle, porosity are 70 ~ 80%.
Preferably, step（1）The mass ratio of the porous expanded perlite and liquid n-dodecanol is 1:4~1:3.
Preferably, step（2）The vegetable oil be soybean oil, rapeseed oil, cottonseed oil, rice bran oil or corn oil at least
It is a kind of.
Preferably, step（2）The grain size of the nano-calcium carbonate is 10 ~ 50nm.
Preferably, step（2）The coupling agent is one kind in titanate coupling agent or aluminate coupling agent.
Preferably, step（2）In the coating liquid, each raw material by weight, wherein：82 ~ 90 parts of Lauxite, plant
4.5 ~ 7 parts of oil, 5 ~ 10 parts of nano-calcium carbonate, 0.5 ~ 1 part of coupling agent.
Preferably, step（3）The wind pushing temperature is 50 ~ 70 DEG C；The soaking time is 30 ~ 40min；
Preferably, step（3）The curing agent is one kind in ammonium chloride, ammonium bromide, m-phenylene diamine (MPD) or vinyl triamine；It is described
The mass concentration of curing agent solution is 40 ~ 60%.
Preferably, step（3）In, each raw material by weight, wherein：68.8 ~ 79.2 parts of capsule-core, 20 ~ 30 parts of coating liquid,
0.8 ~ 1.2 part of curing agent solution.
A kind of phase-change microcapsule for cable temperature control being prepared by the above method.
The present invention is not easily to fall off by making phase-change material be tightly combined with carrier after cryofixation；It can refine simultaneously micro-
The grain size of capsule.By the coating liquid of spraying Lauxite/nano-calcium carbonate, wrapping property more preferably capsule is obtained, microcapsules
It in distribution, avoids the conclusion degree of capsule excessively high, promotes dispersion of the microencapsulated phase change material in resin insulating barrier.
Test the present invention prepare phase-change microcapsule microcapsules fineness, Microcapsules Size distribution, microcapsules dispersibility and
Manufacturing cost, and the phase-change microcapsule prepared with multiphase emulsion method, interfacial polymerization compares, method of the invention has apparent
Advantage, as shown in table 1.
Table 1：
| Performance indicator | The present invention | Multiphase emulsion method | Interfacial polymerization |
| Microcapsules fineness（mm） | 0.15~0.25 | 0.3~0.5 | 0.3~0.6 |
| Microcapsules Size is distributed | It concentrates | Compared with dispersion | Dispersion |
| Microcapsules dispersibility | It is good | It is poor | It is poor |
| Manufacturing cost | It is relatively low | It is high | It is high |
The present invention provides a kind of phase-change microcapsules and preparation method thereof for cable temperature control, compared with prior art, dash forward
The characteristics of going out and excellent effect are：
1, the side that the phase-change microcapsule for cable temperature control is prepared using the coating liquid of Lauxite/nano-calcium carbonate is proposed
Method.
2, it is tightly combined by the phase-change material of cryofixation and carrier, not easily to fall off, package effect is better, can protect very well
Protect capsule-core.
3, passing through the grain size of refinement microcapsules so that Microcapsules Size distribution is concentrated, and good dispersion, compact structure is good,
Heat transfer, mass transfer and processing performance are excellent, there is good application prospect in cable temperature control.
4, preparation process of the invention is simple and easy to control, and low energy consumption, and production cost is low, and economic advantages are apparent, is suitble to largely push away
Wide application.
Specific implementation mode
In the following, the present invention will be further described in detail by way of specific embodiments, but this should not be interpreted as to the present invention
Range be only limitted to example below.Without departing from the idea of the above method of the present invention, according to ordinary skill
The various replacements or change that knowledge and customary means are made, should be included in the scope of the present invention.
Embodiment 1
（1）The detailed process of the preparation of capsule-core is：
First porous expanded perlite is immersed in liquid n-dodecanol, n-dodecanol is made to be adsorbed in the micropore of expanded perlite,
Then it is filtered, then is placed in liquid nitrogen cooling fixation rapidly, so that n-dodecanol is combined closely with expanded perlite, be not easy to take off
It falls, the capsule-core of phase-change microcapsule is made；The pore morphology of porous expanded perlite is open bore, and it is of 0.1 ~ 0.2mm to take grain size
Grain, porosity 75%；The mass ratio of porous expanded perlite and liquid n-dodecanol is 1:4；
（2）The detailed process of the preparation of coating liquid is：
Lauxite is uniformly mixed with vegetable oil first, nano-calcium carbonate and coupling agent is then added, is further dispersed with stirring
To the coating liquid for forming stabilization；Vegetable oil is soybean oil；Coupling agent is titanate coupling agent；
In coating liquid, the total mass fraction of each component in terms of 100 parts, wherein：85 parts of Lauxite, 6 parts of vegetable oil, nano-calcium carbonate
8 parts of calcium, 1 part of coupling agent；
（3）The detailed process of the preparation of phase-change microcapsule is：
First capsule-core is added in coating machine, is then turned on equipment, wind pushing temperature is adjusted, coating liquid is then sprayed into mist from a side
Shape and the surface for being dispersed in capsule-core, while curing agent solution is sprayed into from another side, so that Lauxite is cured, forms shell
Nuclear structure stops heating after held for some time, and through cooling down, phase-change microcapsule material is made；Wind pushing temperature is 70 DEG C；It protects
The warm time is 35min；Curing agent is ammonium chloride；The mass concentration of curing agent solution is 50%；The shell thickness of core-shell structure is
0.3μm。
In phase-change microcapsule material, the total mass fraction of each component in terms of 100 parts, wherein：74 parts of capsule-core, coating liquid 25
Part, 1 part of curing agent solution；
Phase-change microcapsule made from embodiment 1, microcapsules fineness, Microcapsules Size distribution, microcapsules are dispersed and are prepared into
This is as shown in table 2.
Embodiment 2
（1）The detailed process of the preparation of capsule-core is：
First porous expanded perlite is immersed in liquid n-dodecanol, n-dodecanol is made to be adsorbed in the micropore of expanded perlite,
Then it is filtered, then is placed in liquid nitrogen cooling fixation rapidly, so that n-dodecanol is combined closely with expanded perlite, be not easy to take off
It falls, the capsule-core of phase-change microcapsule is made；The pore morphology of porous expanded perlite is hollow hole, and it is of 0.1 ~ 0.2mm to take grain size
Grain, porosity 70%；The mass ratio of porous expanded perlite and liquid n-dodecanol is 1:3；
（2）The detailed process of the preparation of coating liquid is：
Lauxite is uniformly mixed with vegetable oil first, nano-calcium carbonate and coupling agent is then added, is further dispersed with stirring
To the coating liquid for forming stabilization；Vegetable oil is rapeseed oil；Coupling agent is aluminate coupling agent；
In coating liquid, the total mass fraction of each component in terms of 100 parts, wherein：90 parts of Lauxite, 4.5 parts of vegetable oil, nano-sized carbon
5 parts of sour calcium, 0.5 part of coupling agent；
（3）The detailed process of the preparation of phase-change microcapsule is：
First capsule-core is added in coating machine, is then turned on equipment, wind pushing temperature is adjusted, coating liquid is then sprayed into mist from a side
Shape and the surface for being dispersed in capsule-core, while curing agent solution is sprayed into from another side, so that Lauxite is cured, forms shell
Nuclear structure stops heating after held for some time, and through cooling down, phase-change microcapsule material is made；Wind pushing temperature is 50 DEG C；It protects
The warm time is 40min；Curing agent is ammonium bromide；The mass concentration of curing agent solution is 40%；The shell thickness of core-shell structure is
0.2μm。
In phase-change microcapsule material, the total mass fraction of each component in terms of 100 parts, wherein：79.2 parts of capsule-core, coating liquid 20
Part, 0.8 part of curing agent solution；
Phase-change microcapsule made from embodiment 2, microcapsules fineness, Microcapsules Size distribution, microcapsules are dispersed and are prepared into
This is as shown in table 2.
Embodiment 3
（1）The detailed process of the preparation of capsule-core is：
First porous expanded perlite is immersed in liquid n-dodecanol, n-dodecanol is made to be adsorbed in the micropore of expanded perlite,
Then it is filtered, then is placed in liquid nitrogen cooling fixation rapidly, so that n-dodecanol is combined closely with expanded perlite, be not easy to take off
It falls, the capsule-core of phase-change microcapsule is made；The pore morphology of porous expanded perlite is open bore, and it is of 0.1 ~ 0.2mm to take grain size
Grain, porosity 80%；The mass ratio of porous expanded perlite and liquid n-dodecanol is 1:4；
（2）The detailed process of the preparation of coating liquid is：
Lauxite is uniformly mixed with vegetable oil first, nano-calcium carbonate and coupling agent is then added, is further dispersed with stirring
To the coating liquid for forming stabilization；Vegetable oil is cottonseed oil；Coupling agent is titanate coupling agent；
In coating liquid, the total mass fraction of each component in terms of 100 parts, wherein：82 parts of Lauxite, 7 parts of vegetable oil, nano-calcium carbonate
10 parts of calcium, 1 part of coupling agent；
（3）The detailed process of the preparation of phase-change microcapsule is：
First capsule-core is added in coating machine, is then turned on equipment, wind pushing temperature is adjusted, coating liquid is then sprayed into mist from a side
Shape and the surface for being dispersed in capsule-core, while curing agent solution is sprayed into from another side, so that Lauxite is cured, forms shell
Nuclear structure stops heating after held for some time, and through cooling down, phase-change microcapsule material is made；Wind pushing temperature is 70 DEG C；It protects
The warm time is 30min；Curing agent is m-phenylene diamine (MPD)；The mass concentration of curing agent solution is 60%；The shell thickness of core-shell structure is
0.4μm。
In phase-change microcapsule material, the total mass fraction of each component in terms of 100 parts, wherein：68.8 parts of capsule-core, coating liquid 30
Part, 1.2 parts of curing agent solution；
Phase-change microcapsule made from embodiment 3, microcapsules fineness, Microcapsules Size distribution, microcapsules are dispersed and are prepared into
This is as shown in table 2.
Embodiment 4
（1）The detailed process of the preparation of capsule-core is：
First porous expanded perlite is immersed in liquid n-dodecanol, n-dodecanol is made to be adsorbed in the micropore of expanded perlite,
Then it is filtered, then is placed in liquid nitrogen cooling fixation rapidly, so that n-dodecanol is combined closely with expanded perlite, be not easy to take off
It falls, the capsule-core of phase-change microcapsule is made；The pore morphology of porous expanded perlite is hollow hole, and it is of 0.1 ~ 0.2mm to take grain size
Grain, porosity 72%；The mass ratio of porous expanded perlite and liquid n-dodecanol is 1:3；
（2）The detailed process of the preparation of coating liquid is：
Lauxite is uniformly mixed with vegetable oil first, nano-calcium carbonate and coupling agent is then added, is further dispersed with stirring
To the coating liquid for forming stabilization；Vegetable oil is rice bran oil；Coupling agent is aluminate coupling agent；
In coating liquid, the total mass fraction of each component in terms of 100 parts, wherein：88 parts of Lauxite, 5 parts of vegetable oil, nano-calcium carbonate
6 parts of calcium, 1 part of coupling agent；
（3）The detailed process of the preparation of phase-change microcapsule is：
First capsule-core is added in coating machine, is then turned on equipment, wind pushing temperature is adjusted, coating liquid is then sprayed into mist from a side
Shape and the surface for being dispersed in capsule-core, while curing agent solution is sprayed into from another side, so that Lauxite is cured, forms shell
Nuclear structure stops heating after held for some time, and through cooling down, phase-change microcapsule material is made；Wind pushing temperature is 55 DEG C；It protects
The warm time is 38min；Curing agent is vinyl triamine；The mass concentration of curing agent solution is 45%；The shell thickness of core-shell structure
It is 0.2 μm.
In phase-change microcapsule material, the total mass fraction of each component in terms of 100 parts, wherein：77.1 parts of capsule-core, coating liquid 22
Part, 0.9 part of curing agent solution；
Phase-change microcapsule made from embodiment 4, microcapsules fineness, Microcapsules Size distribution, microcapsules are dispersed and are prepared into
This is as shown in table 2.
Embodiment 5
（1）The detailed process of the preparation of capsule-core is：
First porous expanded perlite is immersed in liquid n-dodecanol, n-dodecanol is made to be adsorbed in the micropore of expanded perlite,
Then it is filtered, then is placed in liquid nitrogen cooling fixation rapidly, so that n-dodecanol is combined closely with expanded perlite, be not easy to take off
It falls, the capsule-core of phase-change microcapsule is made；The pore morphology of porous expanded perlite is open bore, and it is of 0.1 ~ 0.2mm to take grain size
Grain, porosity 78%；The mass ratio of porous expanded perlite and liquid n-dodecanol is 1:4；
（2）The detailed process of the preparation of coating liquid is：
Lauxite is uniformly mixed with vegetable oil first, nano-calcium carbonate and coupling agent is then added, is further dispersed with stirring
To the coating liquid for forming stabilization；Vegetable oil is corn oil；Coupling agent is titanate coupling agent；
In coating liquid, the total mass fraction of each component in terms of 100 parts, wherein：84 parts of Lauxite, 6.5 parts of vegetable oil, nano-sized carbon
9 parts of sour calcium, 0.5 part of coupling agent；
（3）The detailed process of the preparation of phase-change microcapsule is：
First capsule-core is added in coating machine, is then turned on equipment, wind pushing temperature is adjusted, coating liquid is then sprayed into mist from a side
Shape and the surface for being dispersed in capsule-core, while curing agent solution is sprayed into from another side, so that Lauxite is cured, forms shell
Nuclear structure stops heating after held for some time, and through cooling down, phase-change microcapsule material is made；Wind pushing temperature is 65 DEG C；It protects
The warm time is 32min；Curing agent is ammonium chloride；The mass concentration of curing agent solution is 55%；The shell thickness of core-shell structure is
0.4μm。
In phase-change microcapsule material, the total mass fraction of each component in terms of 100 parts, wherein：71 parts of capsule-core, coating liquid 28
Part, 1 part of curing agent solution；
Phase-change microcapsule made from embodiment 5, microcapsules fineness, Microcapsules Size distribution, microcapsules are dispersed and are prepared into
This is as shown in table 2.
Embodiment 6
（1）The detailed process of the preparation of capsule-core is：
First porous expanded perlite is immersed in liquid n-dodecanol, n-dodecanol is made to be adsorbed in the micropore of expanded perlite,
Then it is filtered, then is placed in liquid nitrogen cooling fixation rapidly, so that n-dodecanol is combined closely with expanded perlite, be not easy to take off
It falls, the capsule-core of phase-change microcapsule is made；The pore morphology of porous expanded perlite is hollow hole, and it is of 0.1 ~ 0.2mm to take grain size
Grain, porosity 76%；The mass ratio of porous expanded perlite and liquid n-dodecanol is 1:3；
（2）The detailed process of the preparation of coating liquid is：
Lauxite is uniformly mixed with vegetable oil first, nano-calcium carbonate and coupling agent is then added, is further dispersed with stirring
To the coating liquid for forming stabilization；Vegetable oil is soybean oil；Coupling agent is aluminate coupling agent；
In coating liquid, the total mass fraction of each component in terms of 100 parts, wherein：87 parts of Lauxite, 6 parts of vegetable oil, nano-calcium carbonate
6 parts of calcium, 1 part of coupling agent；
（3）The detailed process of the preparation of phase-change microcapsule is：
First capsule-core is added in coating machine, is then turned on equipment, wind pushing temperature is adjusted, coating liquid is then sprayed into mist from a side
Shape and the surface for being dispersed in capsule-core, while curing agent solution is sprayed into from another side, so that Lauxite is cured, forms shell
Nuclear structure stops heating after held for some time, and through cooling down, phase-change microcapsule material is made；Wind pushing temperature is 60 DEG C；It protects
The warm time is 36min；Curing agent is ammonium bromide；The mass concentration of curing agent solution is 52%；The shell thickness of core-shell structure is
0.3μm。
In phase-change microcapsule material, the total mass fraction of each component in terms of 100 parts, wherein：73 parts of capsule-core, coating liquid 26
Part, 1 part of curing agent solution；
Phase-change microcapsule made from embodiment 6, microcapsules fineness, Microcapsules Size distribution, microcapsules are dispersed and are prepared into
This is as shown in table 2.
Comparative example 1
（1）The preparation of capsule-core：The not cryofixation in liquid nitrogen, other are consistent with embodiment 6；
（2）The preparation of coating liquid：It is consistent with embodiment 6；
（3）The preparation of phase-change microcapsule：It is consistent with embodiment 6.
Phase-change microcapsule made from comparative example 1, microcapsules fineness, Microcapsules Size distribution, microcapsules dispersibility and system
Standby cost is as shown in table 2.
Table 2：
| Performance indicator | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Embodiment 6 | Comparative example 1 |
| Microcapsules fineness（mm） | 0.17 | 0.21 | 0.18 | 0.20 | 0.22 | 0.19 | 0.31 |
| Microcapsules Size is distributed | It concentrates | It concentrates | It concentrates | It concentrates | It concentrates | It concentrates | Compared with dispersion |
| Microcapsules dispersibility | It is good | It is good | It is good | It is good | It is good | It is good | Generally |
| Manufacturing cost | It is relatively low | It is relatively low | It is relatively low | It is relatively low | It is relatively low | It is relatively low | Generally |
Claims (10)
1. a kind of preparation method of phase-change microcapsule for cable temperature control, detailed process are：
（1）Porous expanded perlite is immersed in liquid n-dodecanol, n-dodecanol is made to be adsorbed in the micropore of expanded perlite,
Then it is filtered, then is placed in liquid nitrogen cooling fixation rapidly, so that n-dodecanol is combined closely with expanded perlite, be not easy to take off
It falls, the capsule-core of phase-change microcapsule is made；
（2）Lauxite is uniformly mixed with vegetable oil, nano-calcium carbonate and coupling agent is then added, is further dispersed with stirring
To the coating liquid for forming stabilization；
（3）By step（1）Obtained capsule-core is added in coating machine, is then turned on equipment, wind pushing temperature is adjusted, then from a side
By step（2）Obtained coating liquid atomisation and the surface for being dispersed in capsule-core, while spraying into and curing from another side
Agent solution makes Lauxite cure, and forms core-shell structure, stops heating after held for some time, through cooling down, phase transformation is made
Microencapsulation material.
2. the preparation method of a kind of phase-change microcapsule for cable temperature control according to claim 1, it is characterised in that：Step
（1）The pore morphology of the porous expanded perlite is open bore, and it is the particle of 0.1 ~ 0.2mm to take grain size, and porosity is 70 ~ 80%.
3. the preparation method of a kind of phase-change microcapsule for cable temperature control according to claim 1, it is characterised in that：Step
（1）The mass ratio of the porous expanded perlite and liquid n-dodecanol is 1:4~1:3.
4. the preparation method of a kind of phase-change microcapsule for cable temperature control according to claim 1, it is characterised in that：Step
（2）The vegetable oil is at least one of soybean oil, rapeseed oil, cottonseed oil, rice bran oil or corn oil.
5. the preparation method of a kind of phase-change microcapsule for cable temperature control according to claim 1, it is characterised in that：Step
（2）The grain size of the nano-calcium carbonate is 10 ~ 50nm；The coupling agent is one in titanate coupling agent or aluminate coupling agent
Kind.
6. the preparation method of a kind of phase-change microcapsule for cable temperature control according to claim 1, it is characterised in that：Step
（2）In the coating liquid, each raw material by weight, wherein：82 ~ 90 parts of Lauxite, 4.5 ~ 7 parts of vegetable oil, nano-calcium carbonate
5 ~ 10 parts of calcium, 0.5 ~ 1 part of coupling agent.
7. the preparation method of a kind of phase-change microcapsule for cable temperature control according to claim 1, it is characterised in that：Step
（3）The wind pushing temperature is 50 ~ 70 DEG C；The soaking time is 30 ~ 40min.
8. the preparation method of a kind of phase-change microcapsule for cable temperature control according to claim 1, it is characterised in that：Step
（3）The curing agent is one kind in ammonium chloride, ammonium bromide, m-phenylene diamine (MPD) or vinyl triamine；The matter of the curing agent solution
Measure a concentration of 40 ~ 60%.
9. the preparation method of a kind of phase-change microcapsule for cable temperature control according to claim 1, it is characterised in that：Step
（3）In, each raw material by weight, wherein：68.8 ~ 79.2 parts of capsule-core, 20 ~ 30 parts of coating liquid, curing agent solution 0.8 ~ 1.2
Part.
10. a kind of phase-change microcapsule for cable temperature control that any one of claim 1-9 the methods are prepared.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109370539A (en) * | 2018-12-11 | 2019-02-22 | 安徽绿元素建材科技有限公司 | A kind of phase-change accumulation energy microballoon and preparation method thereof |
| CN109370532A (en) * | 2018-10-25 | 2019-02-22 | 合肥隆扬环保科技有限公司 | A kind of phase-change heat-insulating coating and preparation method thereof based on phase-transition heat-storage |
| WO2020245708A1 (en) | 2019-06-04 | 2020-12-10 | 3M Innovative Properties Company | Microcapsule with a porous or hollow core and a shell containing a component releasing gas upon contact with an acid |
| CN116535869A (en) * | 2023-06-12 | 2023-08-04 | 沈阳工学院 | Phase-change energy-storage temperature-control capsule and preparation method thereof |
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2018
- 2018-01-11 CN CN201810024710.6A patent/CN108276965A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109370532A (en) * | 2018-10-25 | 2019-02-22 | 合肥隆扬环保科技有限公司 | A kind of phase-change heat-insulating coating and preparation method thereof based on phase-transition heat-storage |
| CN109370539A (en) * | 2018-12-11 | 2019-02-22 | 安徽绿元素建材科技有限公司 | A kind of phase-change accumulation energy microballoon and preparation method thereof |
| CN109370539B (en) * | 2018-12-11 | 2021-04-20 | 安徽纳微技术研发中心有限公司 | Phase-change energy-storage microsphere and preparation method thereof |
| WO2020245708A1 (en) | 2019-06-04 | 2020-12-10 | 3M Innovative Properties Company | Microcapsule with a porous or hollow core and a shell containing a component releasing gas upon contact with an acid |
| CN116535869A (en) * | 2023-06-12 | 2023-08-04 | 沈阳工学院 | Phase-change energy-storage temperature-control capsule and preparation method thereof |
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