CN104610921A - PA66/xylitol microcapsule heat storage material and preparation method thereof - Google Patents
PA66/xylitol microcapsule heat storage material and preparation method thereof Download PDFInfo
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- CN104610921A CN104610921A CN201410854907.4A CN201410854907A CN104610921A CN 104610921 A CN104610921 A CN 104610921A CN 201410854907 A CN201410854907 A CN 201410854907A CN 104610921 A CN104610921 A CN 104610921A
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- xylitol
- microcapsule
- heat accumulating
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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
- C09K5/063—Materials absorbing or liberating heat during crystallisation; Heat storage materials
Abstract
The invention discloses a PA66/xylitol microcapsule heat storage material and a preparation method thereof. The heat storage material comprises the following components in parts by weight: 80-95 parts of PA66 and 5-20 parts of xylitol microcapsules, wherein the preparation method of the xylitol microcapsules comprises the following steps: taking and adding xylitol to water, and stirring to obtain a uniform solution; adding an emulsifying agent and an organic solvent to the uniform solution, and stirring at a high speed to obtain a uniform oil pocket aqueous emulsion; heating to 60-80 DEG C while stirring the oil pocket aqueous emulsion, preserving the heat for 10-50 min, adding an organic solvent solution of isocyanate, continuously heating, collecting products for suction filtration, collecting filter cakes for washing, and drying to obtain the xylitol microcapsules. The heat storage material has the benefits that more energy can be absorbed or released when the environment temperature of the material changes, so that the effects of heat storage and insulation are achieved.
Description
Technical field
The present invention relates to a kind of PA66/ Xylitol microcapsule heat accumulating and preparation method thereof, be specifically related to the synthetic method of Xylitol microcapsule and the method for processing forming of this material, belong to technical field of polymer materials.
Background technology
Along with the development of society, the demand of the mankind to the energy increases day by day, but the supply and demand of the energy has stronger timeliness, can't reasonably utilize under many circumstances, thus causes a large amount of wastes of the energy.As in Industrial processes the heat that produces do not utilized and slatterned, and have a large amount of waste heats to be lost when needing supply heat.At this moment just need some materials these heats or cold to be stored, discharged when needed, such material is just called Thermal energy storage material again.Only the thing of nearly decades to the understanding of Thermal energy storage material and research, but due to its application very extensive, become a kind of novel material day by day come into one's own.Current heat accumulating is used in a lot, the manufacturing technology of heat accumulating also comparative maturity, and easy to use, and energy-saving effect is remarkable.If heat accumulating can be widely used in building, can reduce network load to a great extent, save and heat or refrigeration expense, the country lacked at this energy of China more should be used widely.Equally, if heat accumulating is applied to automotive industry, also significantly can reduces the waste of the energy, alleviate environmental pollution even to a certain extent, there is very strong Practical significance.Heat accumulating wide variety, mainly can be divided into sensible heat, latent heat and chemical reaction heat three kinds from heat accumulation mode, and wherein latent heat stores main manifestations is phase change material.The phase change material of research is both at home and abroad mainly solid-liquid phase change material at present, and its purposes is also extensive.
At present, the problems such as heat accumulating technical elements also also exists energy storage weak effect, and the intensity of material own is low.
Summary of the invention
The object of the invention is to application Xylitol microcapsule and PA66 prepare a kind of high heat storage, the high performance material of good workability and thermotolerance.
The object of the invention is to be achieved through the following technical solutions:
On the one hand, the invention provides a kind of PA66/ Xylitol microcapsule heat accumulating, it comprises the following component counted by weight:
PA66:80 ~ 95 part;
Xylitol microcapsule: 5 ~ 20 parts;
Wherein, the preparation method of described Xylitol microcapsule is:
The Xylitol getting 20 ~ 27 weight parts adds the water of 7 ~ 13 weight parts, stirs and obtains homogeneous solution;
In described homogeneous solution, add the emulsifying agent of 1 ~ 3 weight part and the organic solvent of 49 ~ 54 parts, stir under the rotating speed of 6000 ~ 13000rpm, obtain uniform water-in-oil emulsion;
Described water-in-oil emulsion is heated to 60 ~ 80 DEG C while stirring, after insulation 10 ~ 50min, add the organic solvent solution of 5 ~ 15 weight part isocyanic ester, after continuing to be incubated 80 ~ 100min at 60 ~ 80 DEG C, collect product and carry out suction filtration, after collection filter cake washs, dry at 60 ~ 80 DEG C, obtain Xylitol microcapsule.
Preferably, the HLB=3 of described emulsifying agent.
Preferably, described organic solvent is at least one in toluene, dimethylbenzene, hexanaphthene.
Preferably, described isocyanic ester is at least one in hexa-methylene diisocyanate (HDI), ditan diisocyanate (MDI), toluene diisocyanate (TDI).
On the other hand, present invention also offers a kind of method preparing described PA66/ Xylitol microcapsule heat accumulating, comprise following operation:
By PA66 and the mixing of Xylitol microcapsule, at 170 ~ 210 DEG C, carry out melt blending, obtain PPA66/ Xylitol microcapsule heat accumulating.
Compared with prior art, the present invention has following beneficial effect:
PA66 is used Xylitol microcapsule coated, remain the character of Xylitol preferably, material is made to have higher enthalpy of phase change, higher energy can be stored, can absorb or release more energy during variation of ambient temperature residing for material, thus effectively " delay " change of temperature, thus play the effect of heat-storage heat-preserving, become product application in its preparation and can effectively play insulation heat accumulation to when automobile, building field, reduce the effect of energy consumption.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in detail.Following examples will contribute to those skilled in the art and understand the present invention further, but not limit the present invention in any form.It should be pointed out that to those skilled in the art, without departing from the inventive concept of the premise, some distortion and improvement can also be made.These all belong to protection scope of the present invention.
embodiment 1
The present embodiment relates to a kind of PA66/ Xylitol microcapsule heat accumulating, comprises the steps:
One, Xylitol 42g, adds 18g water, is stirred to homogeneous transparent liquid with glass stick;
Two, above-mentioned homogeneous solution is added 5.16g emulsifying agent and 120ml toluene, under high speed agitator, stir 15min with the rotating speed of 10000rpm, prepare flat-white emulsion; Be transferred in 250ml three-necked flask by this emulsion again, at 80 DEG C, agitator speed is slowly add the 10ml toluene solution being dissolved with 2.16gMDI under the condition of 600rpm, after adding completely, maintains reaction 90min; By material suction filtration in there-necked flask after question response terminates, wash three times with toluene, then wash three times with water, get the filter cake dry 24h in 80 DEG C of baking ovens in Büchner funnel, prepare Xylitol microcapsule;
Three, get 90 parts of PA66,10 parts of Xylitol microcapsule, at 190 DEG C, carry out melt blending in the Banbury mixer of 60rpm, the blended time is 6min, prepares heat accumulating.
embodiment 2
The present embodiment relates to a kind of PA66/ Xylitol microcapsule heat accumulating, comprises the steps:
One, Xylitol 40g, adds 14g water, is stirred to homogeneous transparent liquid with glass stick;
Two, above-mentioned homogeneous solution is added 2g emulsifying agent and 126ml hexanaphthene, under high speed agitator, stir 15min with the rotating speed of 10000rpm, prepare flat-white emulsion; Be transferred in 250ml three-necked flask by this emulsion again, at 80 DEG C, agitator speed is slowly add the 15ml toluene solution being dissolved with 1gTDI under the condition of 600rpm, after adding completely, maintains reaction 90min; By material suction filtration in there-necked flask after question response terminates, wash three times with toluene, then wash three times with water, get the filter cake dry 24h in 80 DEG C of baking ovens in Büchner funnel, prepare Xylitol microcapsule;
Three, get 95 parts of PA66,5 parts of Xylitol microcapsule, at 170 DEG C, carry out melt blending in the Banbury mixer of 60rpm, the blended time is 6min, prepares heat accumulating.
embodiment 3
The present embodiment relates to a kind of PA66/ Xylitol microcapsule heat accumulating, comprises the steps:
One, Xylitol 54g, adds 26g water, is stirred to homogeneous transparent liquid with glass stick;
Two, above-mentioned homogeneous solution is added 6g emulsifying agent and 124ml toluene, under high speed agitator, stir 15min with the rotating speed of 10000rpm, prepare flat-white emulsion; Be transferred in 250ml three-necked flask by this emulsion again, at 80 DEG C, agitator speed is slowly add the 30ml toluene solution being dissolved with 2gHMDI under the condition of 800rpm, after adding completely, maintains reaction 90min; By material suction filtration in there-necked flask after question response terminates, wash three times with toluene, then wash three times with water, get the filter cake dry 24h in 80 DEG C of baking ovens in Büchner funnel, prepare Xylitol microcapsule;
Three, get 80 parts of PA66,20 parts of Xylitol microcapsule, at 210 DEG C, carry out melt blending in the Banbury mixer of 60rpm, the blended time is 6min, prepares heat accumulating.
By material thermal characteristics prepared by differential scanning calorimeter (DSC) research performation example 1 ~ 3, temperature range is 0 ~ 75 DEG C, temperature rise rate 5 DEG C/min:
| Sample | Transformation temperature (DEG C) | Latent heat of phase change (J/g) |
| Embodiment 1 | 15.01～25.14 | 3.25 |
| Embodiment 2 | 16.27～25.56 | 3.89 |
| Embodiment 3 | 14.78～26.21 | 4.25 |
comparative example 1
Paraffin and the higher high density polyethylene(HDPE) of fusing point are carried out melt blending at the temperature higher than their fusing points, then below high density polyethylene(HDPE) fusing point is cooled to, high density polyethylene(HDPE) first solidifies and forms space net structure, and liquid paraffin is then wherein in bond, forms fixed phase change paraffin.Get 20 parts, this paraffin, 80 parts of PA66, at 210 DEG C, carry out melt blending 6min in the Banbury mixer of 60rpm, prepare heat accumulating.And by this material by material thermal characteristics prepared by differential scanning calorimeter (DSC) investigation and comparison example 1, temperature range is 0 ~ 75 DEG C, temperature rise rate 5 DEG C/min, and recording transformation temperature is 18.21 ~ 20.32 DEG C, and latent heat of phase change is 2.41J/g.
To sum up, compared with prior art, the present invention has following beneficial effect:
By Xylitol microcapsule coated, remain the character of Xylitol preferably, material is made to have higher enthalpy of phase change, higher energy can be stored, can absorb or release more energy during variation of ambient temperature residing for material, thus effectively " delay " change of temperature, thus play the effect of heat-storage heat-preserving, become product application in its preparation and can effectively play insulation heat accumulation to when automobile, building field, reduce the effect of energy consumption.
Above specific embodiments of the invention are described.It is to be appreciated that the present invention is not limited to above-mentioned particular implementation, those skilled in the art can make various distortion or amendment within the scope of the claims, and this does not affect flesh and blood of the present invention.
Claims (5)
1. a PA66/ Xylitol microcapsule heat accumulating, is characterized in that, comprises the following component counted by weight:
PA66:80 ~ 95 part;
Xylitol microcapsule: 5 ~ 20 parts;
Wherein, the preparation method of described Xylitol microcapsule is:
The Xylitol getting 20 ~ 27 weight parts adds the water of 7 ~ 13 weight parts, stirs and obtains homogeneous solution;
In described homogeneous solution, add the emulsifying agent of 1 ~ 3 weight part and the organic solvent of 49 ~ 54 parts, stir under the rotating speed of 6000 ~ 13000rpm, obtain uniform water-in-oil emulsion;
Described water-in-oil emulsion is heated to 60 ~ 80 DEG C while stirring, after insulation 10 ~ 50min, add the organic solvent solution of 5 ~ 15 weight part isocyanic ester, after continuing to be incubated 80 ~ 100min at 60 ~ 80 DEG C, collect product and carry out suction filtration, after collection filter cake washs, dry at 60 ~ 80 DEG C, obtain Xylitol microcapsule.
2. PA66/ Xylitol microcapsule heat accumulating as claimed in claim 1, is characterized in that, the HLB=3 of described emulsifying agent.
3. PA66/ Xylitol microcapsule heat accumulating as claimed in claim 1, it is characterized in that, described organic solvent is at least one in toluene, dimethylbenzene, hexanaphthene.
4. PA66/ Xylitol microcapsule heat accumulating as claimed in claim 1, it is characterized in that, described isocyanic ester is at least one in hexamethyl diisocyanate, ditan diisocyanate, toluene diisocyanate.
5., as a preparation method for the PA66/ Xylitol microcapsule heat accumulating in Claims 1 to 4 as described in any one, it is characterized in that, comprise following operation:
By PA66 and the mixing of Xylitol microcapsule, at 170 ~ 210 DEG C, carry out melt blending, obtain PPA66/ Xylitol microcapsule heat accumulating.
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| CN201410854907.4A CN104610921A (en) | 2014-12-26 | 2014-12-26 | PA66/xylitol microcapsule heat storage material and preparation method thereof |
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| CN201410854907.4A CN104610921A (en) | 2014-12-26 | 2014-12-26 | PA66/xylitol microcapsule heat storage material and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107364635A (en) * | 2017-06-30 | 2017-11-21 | 嘉兴华悦包装用品有限公司 | Packaging for foodstuff zippered bag with refrigerating function |
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| EP2218498A2 (en) * | 2009-02-17 | 2010-08-18 | Despature et Fils Sas | Microcapsules for self-refreshing textile |
| CN102123857A (en) * | 2008-07-16 | 2011-07-13 | 奥特拉斯技术有限公司 | Articles containing functional polymeric phase change materials and methods of manufacturing the same |
| CN102492397A (en) * | 2011-11-25 | 2012-06-13 | 河南科技大学 | Preparation method of microencapsulated phase change material with high phase change latent heat value |
| CN103031116A (en) * | 2011-09-29 | 2013-04-10 | 高斌 | Heat storage material microcapsule, production thereof and application thereof |
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2014
- 2014-12-26 CN CN201410854907.4A patent/CN104610921A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102123857A (en) * | 2008-07-16 | 2011-07-13 | 奥特拉斯技术有限公司 | Articles containing functional polymeric phase change materials and methods of manufacturing the same |
| EP2218498A2 (en) * | 2009-02-17 | 2010-08-18 | Despature et Fils Sas | Microcapsules for self-refreshing textile |
| CN103031116A (en) * | 2011-09-29 | 2013-04-10 | 高斌 | Heat storage material microcapsule, production thereof and application thereof |
| CN102492397A (en) * | 2011-11-25 | 2012-06-13 | 河南科技大学 | Preparation method of microencapsulated phase change material with high phase change latent heat value |
Non-Patent Citations (3)
| Title |
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| F.SALAUN ET AL.: "Microencapsulation of a cooling agent by interfacial polymerization: Influence of the parameters of encapsulation on poly(urethane–urea) microparticles characteristics", 《JOURNAL OF MEMBRANE SCIENCE》 * |
| 丁运生; 张志成: "辐照法制备的醋酸乙烯酯/蒙脱土纳米复合材料与HDPE和PA6共混物的研究", 《高等学校化学学报》 * |
| 潘金亮: "相变材料在纺织品中的研究和应用进展", 《河南化工》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107364635A (en) * | 2017-06-30 | 2017-11-21 | 嘉兴华悦包装用品有限公司 | Packaging for foodstuff zippered bag with refrigerating function |
| CN107364635B (en) * | 2017-06-30 | 2019-03-08 | 嘉兴华悦包装用品有限公司 | Food packaging zippered bag with refrigerating function |
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Application publication date: 20150513 |