CN104861935A - Preparation method of phase change microcapsule - Google Patents
Preparation method of phase change microcapsule Download PDFInfo
- Publication number
- CN104861935A CN104861935A CN201510275889.9A CN201510275889A CN104861935A CN 104861935 A CN104861935 A CN 104861935A CN 201510275889 A CN201510275889 A CN 201510275889A CN 104861935 A CN104861935 A CN 104861935A
- Authority
- CN
- China
- Prior art keywords
- phase
- preparation
- phase change
- performed polymer
- change microcapsule
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Manufacturing Of Micro-Capsules (AREA)
Abstract
The invention discloses a preparation method of a phase change microcapsule. The preparation method comprises the following steps: using a solid-liquid phase change material as a core material and a polymer as a wall material, and preparing a white powdered phase change microcapsule by adopting synthesis of a prepolymer, emulsification of the phase change material and step-by-step dropwise addition of the prepolymer, wherein when the prepolymer is dropwise added each time, the pH value of the emulsion is controlled to enable the prepolymer to be sufficiently reacted. The prepared phase change microcapsule is excellent in properties, low in breakage rate, and low in residual free formaldehyde content; the preparation method of the phase change microcapsule is suitable for preparing the microcapsule by using melamine-formaldehyde, urea formaldehyde resin, phenolic resin, urea-melamine-formaldehyde resin and the like as the shell materials; the preparation method is simple, lower in cost, cheap and accessible in the used raw materials; the preparation method of the phase change microcapsule, disclosed by the invention can be used for effectively reducing the residual formaldehyde content in the phase change microcapsule and expanding the range of application of the phase change microcapsule.
Description
Technical field
The invention belongs to technical field of function materials, relate to phase change material processing technology, be specially a kind of preparation method of phase-change microcapsule
Background technology
Solid-liquid phase change material is changed between solid, liquid two-phase by material, undergoes phase transition in specified temp interval, is absorbed or release of heat by phase transformation, to realize storage and the release of heat energy.Due to organic phase change material have that chemical stability is good, latent heat of phase change is large, without crossing cold-peace phenomenon of phase separation, wide material sources, the advantage such as cheap, be widely applied in phase change material.But this kind of material easily flows in phase transition process, is restricted in actual applications, micro encapsulation is the effective ways addressed this problem.
Phase-change microcapsule take phase change material as core, and polymkeric substance is prepared from as wall material, and the phase change material as core undergoes phase transition in wall material.For the phase-change microcapsule taking solid-liquid phase change material as core, wall material limits the flowing of phase change material thus avoids the seepage of phase change material, adds the stability in storage of phase change material and long-lasting.
In recent years, it is open that phase-change microcapsule and technology of preparing thereof have patent, and Shell Materials is based on aminoresin and material modified system thereof.Chinese patent CN190397A take solid-liquid phase change material as core, directly by emulsifiers dissolve in melamine formaldehyde resin prepolymer solution, adopt pre-polymerization, emulsification, cladding process sequential system for phase-change microcapsule, effectively avoid the breakdown of emulsion problem in coated process.Chinese patent CN1570014A is with alkanes solid-liquid phase change material for core, and outer coated melamine formaldehyde resin and PEG200 modify melamine-formaldehyde resin respectively, prepared the change microcapsule of complete appearance, improved its sealing property and crush resistance.Chinese patent CN102504765A take urea-melamine-formaldehyde resin as wall material, and lauryl alcohol is core, has prepared that latent heat of phase change is high, the phase-change microcapsule of water tolerance and good heat resistance.
The preparation method of the phase-change microcapsule reported all does not relate to the substep dropping of wall material performed polymer and controls the pH value of emulsion in preparation process, make prepolymer reaction incomplete, phase-change microcapsule percentage of damage is caused to increase on the one hand, compactness is bad, percolation ratio is higher, causes free formaldehyde content residual in phase-change microcapsule higher on the other hand.
Summary of the invention
The object of the present invention is to provide a kind of preparation method of phase-change microcapsule, to solve the problems of the technologies described above.
The present invention is by the following technical solutions for achieving the above object:
A preparation method for phase-change microcapsule is core with solid-liquid phase change material, take polymkeric substance as wall material, adopts the synthesis of performed polymer, the emulsification of phase change material, the substep of performed polymer to drip obtained powdery white phase-change microcapsule; Wherein controlling ph value of emulsion when each dropping performed polymer makes performed polymer fully react.
As the further scheme of the present invention, described phase change material is solid-liquid phase change organic materials, and as alcohols, organic acid, ester class, alkanes and paraffin, optimum is paraffin.
As the further scheme of the present invention, described performed polymer is the performed polymer of wall material/polymer, wall material used be melamine formaldehyde resin, urea-formaldehyde resin, resol, urea-melamine-formaldehyde resin any one, optimum is urea-melamine-formaldehyde resin.
As the further scheme of the present invention, the synthesis of described performed polymer is added to the water by wall material monomer, stirs and be heated to 60 ~ 90 DEG C, by trolamine regulator solution pH value to 8 ~ 10, and isothermal reaction 30 ~ 90min, obtained performed polymer.
As the further scheme of the present invention, the emulsification of described phase change material is melted by solid-liquid phase change material to join in the middle of emulsifier aqueous solution again, completes emulsification under high-speed stirring.
As the further scheme of the present invention, the substep of described performed polymer drips employing 2 ~ 5 step to carry out, and optimum is 2 ~ 3 steps, and each step is carried out as follows: the pH value of solid-liquid phase change material mixed emulsion is adjusted to 3 ~ 6 by (1); (2) performed polymer is dripped, constant temperature 0.5 ~ 2h at 60 ~ 90 DEG C.
As the further scheme of the present invention, the condition of described emulsification is for adopting high-shear emulsion machine emulsification, and its rotating speed 3000 ~ 18000 revs/min, emulsification times is 1 ~ 30 minute.
Carry out in vacuum drying oven the percolation ratio experiment of described phase-change microcapsule, each formula gets 3 samples, numbers rear powder compressing machine tabletted under 5MPa, then with acetone cleaning, weighs, as initial mass after drying.Then put into vacuum drying oven for some time, take out, dry surperficial paraffin, cool to room temperature is weighed, and so carries out repetition test, calculates the percolation ratio of phase-change microcapsule.
To described phase-change microcapsule free formaldehyde content be according to phenol reagent spectrophotometer (GB/18204.26-2000) measure.Its principle is: formaldehyde and phenol reagent (MBTH) react and generate piperazine, and piperazine is in an acidic solution by ferric ion Fe
3+be oxidized to blue-green compound.This compound has maximum absorption band near wavelength 635nm, and absorbance and formaldehyde content obey extinction law within the specific limits, thus can carry out PARA FORMALDEHYDE PRILLS(91,95) content with spectrophotometry and effectively measure.
Tool of the present invention has the following advantages:
The invention provides a kind of preparation method of phase-change microcapsule, carry out substep dropping to performed polymer and control the pH value of emulsion, the phase-change microcapsule excellent performance of preparation, breakage rate is low, and residual free formaldehyde content is low; The preparation method of this phase-change microcapsule is applicable to the microcapsule that carbamide, urea-formaldehyde resin, resol, urea-melamine-formaldehyde resin etc. are Shell Materials, and preparation method is simple, and cost is lower, raw materials used all cheap and easy to get; Utilize the present invention effectively can reduce the removing residue formaldehyde content of phase-change microcapsule, expand its range of application.
Accompanying drawing explanation
Fig. 1 is the phase-change microcapsule stereoscan photograph that a step drips preparation;
Fig. 2 is the phase-change microcapsule stereoscan photograph that substep drips preparation;
Concrete enforcement
Below in conjunction with the drawings and specific embodiments, the present invention is further elaborated.
Embodiment 1
(1) synthesis of performed polymer
In 250ml there-necked flask, add 10ml distilled water, 4g trimeric cyanamide and 9.5g concentration is the formaldehyde solution of 37%, stirs and is heated to 70 DEG C, by trolamine regulator solution pH value to 10, and isothermal reaction 30min, obtained melamine formaldehyde resin performed polymer.The performed polymer of preparation is divided into 5:5 two equal portions.
(2) emulsification of phase change material
Using 4.5g styrene-maleic anhydride copolymer (SMA) as emulsifying agent, join in 250ml water, heating for dissolving, then add 40g paraffin, emulsification in high-shear emulsifying agent, emulsification condition is: rotating speed 5000 revs/min, emulsification times 10min, obtained paraffin wax emulsions.
(3) first time of performed polymer drips
By emulsion in (2) by citric acid adjust ph to 4, stir with the speed of 800 revs/min, emulsion temperature 70 DEG C.50% performed polymer is added drop-wise in the middle of emulsion, reaction 1h.
(4) second time of performed polymer drips
Mixed emulsion pH value in (3) is adjusted to 5, and rotating speed is constant, and emulsion temperature is elevated to 75 DEG C.50% performed polymer is added drop-wise in the middle of emulsion, reaction 2h.The method of vacuum filtration is adopted to filter the suspension liquid containing phase-change microcapsule obtained, and with 50 DEG C of conditions dryings 2 hours in vacuum drying oven, obtained powdery white phase-change microcapsule.
(5) after tested, the phase-change microcapsule percolation ratio of preparation is 5.45%, and free formaldehyde content is 35.32mg/kg.
Embodiment 2
(1) synthesis of performed polymer
In 250ml there-necked flask, add 15ml distilled water, 2g trimeric cyanamide, 2g urea and 9.5g concentration is the formaldehyde solution of 37%, stir and be heated to 70 DEG C, by trolamine regulator solution pH value to 9, isothermal reaction 30min, obtained urea-melamine-formaldehyde resin performed polymer.The performed polymer of preparation is divided into 6:2:2 tri-parts.
(2) emulsification of phase change material
Using 4.5g styrene-maleic anhydride copolymer (SMA) as emulsifying agent, join in 250ml water, heating for dissolving, then add 45g paraffin, emulsification in high-shear emulsifying agent, emulsification condition is: rotating speed 10000 revs/min, emulsification times 5min, obtained paraffin wax emulsions.
(3) first time of performed polymer drips
By emulsion in (2) by citric acid adjust ph to 3, stir with the speed of 800 revs/min, emulsion temperature 70 DEG C.The performed polymer of 60% is added drop-wise in the middle of emulsion, reaction 1.5h.
(4) second time of performed polymer drips
Mixed emulsion pH value in (3) is adjusted to 4, and rotating speed is constant, and emulsion temperature is elevated to 75 DEG C.20% performed polymer is added drop-wise in the middle of emulsion, reaction 2.5h.
(5) third time of performed polymer drips
Mixed emulsion pH value in (4) is adjusted to 4, and rotating speed is constant, and emulsion temperature is elevated to 80 DEG C.20% performed polymer is added drop-wise in the middle of emulsion, reaction 2.0h.The method of vacuum filtration is adopted to filter the suspension liquid containing phase-change microcapsule obtained, and with 50 DEG C of conditions dryings 2 hours in vacuum drying oven, obtained powdery white phase-change microcapsule.
(6) the phase-change microcapsule percolation ratio prepared is 1.87%, and free formaldehyde content is 15.47mg/kg.
Embodiment 3
(1) synthesis of performed polymer
In 250ml there-necked flask, add 15ml distilled water, 4.5g urea and 9.5g concentration is the formaldehyde solution of 37%, stirs and is heated to 70 DEG C, by trolamine regulator solution pH value to 8, and isothermal reaction 40min, obtained urea-formaldehyde resin performed polymer.The performed polymer of preparation is divided into 7:3 two parts.
(2) emulsification of phase change material
Using 4.5g styrene-maleic anhydride copolymer (SMA) as emulsifying agent, join in 250ml water, heating for dissolving, then add 40g paraffin, emulsification in high-shear emulsifying agent, emulsification condition is: rotating speed 12000 revs/min, emulsification times 6min, obtained paraffin wax emulsions.
(3) first time of performed polymer drips
By emulsion in (2) by citric acid adjust ph to 3, stir with the speed of 800 revs/min, emulsion temperature 70 DEG C.70% performed polymer is added drop-wise in the middle of emulsion, reaction 1h.
(4) second time of performed polymer drips
Mixed emulsion pH value in (3) is adjusted to 4, and rotating speed is constant, and emulsion temperature is elevated to 75 DEG C.30% performed polymer is added drop-wise in the middle of emulsion, reaction 1.5h.The method of vacuum filtration is adopted to filter the suspension liquid containing phase-change microcapsule obtained, and with 50 DEG C of conditions dryings 2 hours in vacuum drying oven, obtained powdery white phase-change microcapsule.
(5) after tested, the phase-change microcapsule percolation ratio of preparation is 4.43%, and free formaldehyde content is 28.76mg/kg.
Embodiment 4
(1) synthesis of performed polymer
In 250ml there-necked flask, add 15ml distilled water, 5g phenol and 9.5g concentration is the formaldehyde solution of 37%, stirs and is heated to 70 DEG C, by trolamine regulator solution pH value to 9, and isothermal reaction 30min, obtained resol performed polymer.The performed polymer of preparation is divided into 5:3:2 tri-parts.
(2) emulsification of phase change material
Using 4.5g styrene-maleic anhydride copolymer (SMA) as emulsifying agent, join in 250ml water, heating for dissolving, then add 40g paraffin, emulsification in high-shear emulsifying agent, emulsification condition is: rotating speed 8000 revs/min, emulsification times 15min, obtained paraffin wax emulsions.
(3) first time of performed polymer drips
By emulsion in (2) by citric acid adjust ph to 3, stir with the speed of 800 revs/min, emulsion temperature 70 DEG C.50% performed polymer is added drop-wise in the middle of emulsion, reaction 1h.
(4) second time of performed polymer drips
Mixed emulsion pH value in (3) is adjusted to 4, and rotating speed is constant, and emulsion temperature is elevated to 75 DEG C.30% performed polymer is added drop-wise in the middle of emulsion, reaction 2h.
(5) third time of performed polymer drips
Mixed emulsion pH value in (4) is adjusted to 4, and rotating speed is constant, and emulsion temperature is elevated to 85 DEG C.20% performed polymer is added drop-wise in the middle of emulsion, reaction 2.5h.The method of vacuum filtration is adopted to filter the suspension liquid containing phase-change microcapsule obtained, and with 50 DEG C of conditions dryings 2 hours in vacuum drying oven, obtained powdery white phase-change microcapsule.
(6) after tested, the phase-change microcapsule percolation ratio of preparation is 6.34%, and free formaldehyde content is 40.52mg/kg.
As shown in Figure 1-2, adopt the phase-change microcapsule stereoscan photograph that a step drips preparation and the contrast adopting substep to drip the phase-change microcapsule stereoscan photograph prepared, known substep drips the phase-change microcapsule excellent performance of preparation, breakage rate is low, residual free formaldehyde content is low, effectively can reduce the removing residue formaldehyde content of phase-change microcapsule, expand its range of application.
Obviously, embodiment described above is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Claims (7)
1. a preparation method for phase-change microcapsule, is characterized in that, is core with solid-liquid phase change material, take polymkeric substance as wall material, adopts the synthesis of performed polymer, the emulsification of phase change material, the substep of performed polymer to drip obtained powdery white phase-change microcapsule; Wherein controlling ph value of emulsion when each dropping performed polymer makes performed polymer fully react.
2. according to the preparation method of the phase-change microcapsule described in claim 1, it is characterized in that, described phase change material is solid-liquid phase change organic materials, and as alcohols, organic acid, ester class, alkanes and paraffin, optimum is paraffin.
3. according to the preparation method of the phase-change microcapsule described in claim 1, it is characterized in that, described performed polymer is the performed polymer of wall material/polymer, wall material used be melamine formaldehyde resin, urea-formaldehyde resin, resol, urea-melamine-formaldehyde resin any one, optimum is urea-melamine-formaldehyde resin.
4. according to the preparation method of the phase-change microcapsule described in claim 1, it is characterized in that, the synthesis of described performed polymer is added to the water by wall material monomer, stir and be heated to 60 ~ 90 DEG C, by trolamine regulator solution pH value to 8 ~ 10, isothermal reaction 30 ~ 90min, obtained performed polymer.
5. according to the preparation method of the phase-change microcapsule described in claim 1, it is characterized in that, the emulsification of described phase change material is melted by solid-liquid phase change material to join in the middle of emulsifier aqueous solution again, completes emulsification under high-speed stirring.
6. according to the preparation method of the phase-change microcapsule described in claim 1, it is characterized in that, the substep of described performed polymer drips employing 2 ~ 5 step to carry out, and optimum is 2 ~ 3 steps, and each step is carried out as follows: the pH value of solid-liquid phase change material mixed emulsion is adjusted to 3 ~ 6 by (1); (2) performed polymer is dripped, constant temperature 0.5 ~ 2h at 60 ~ 90 DEG C.
7. according to the preparation method of the phase-change microcapsule described in claim 5, it is characterized in that, the condition of described emulsification is for adopting high-shear emulsion machine emulsification, and its rotating speed 3000 ~ 18000 revs/min, emulsification times is 1 ~ 30 minute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510275889.9A CN104861935A (en) | 2015-05-26 | 2015-05-26 | Preparation method of phase change microcapsule |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510275889.9A CN104861935A (en) | 2015-05-26 | 2015-05-26 | Preparation method of phase change microcapsule |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104861935A true CN104861935A (en) | 2015-08-26 |
Family
ID=53908128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510275889.9A Pending CN104861935A (en) | 2015-05-26 | 2015-05-26 | Preparation method of phase change microcapsule |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104861935A (en) |
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105396523A (en) * | 2015-12-26 | 2016-03-16 | 孝感巨核新材料科技有限公司 | Preparation method of polymer wrapped paraffin phase-change microsphere |
| CN105648782A (en) * | 2016-03-31 | 2016-06-08 | 上海洋帆实业有限公司 | Preparation method of paraffin phase change microcapsule based thermoregulating shell fabric |
| CN106281237A (en) * | 2016-08-18 | 2017-01-04 | 中国工程物理研究院化工材料研究所 | Two urea groups wax class aggregations and preparation method thereof |
| CN107243305A (en) * | 2017-04-26 | 2017-10-13 | 中国林业科学研究院木材工业研究所 | A kind of preparation method of nano cellulose crystal modified aminoresin microcapsules |
| CN108542589A (en) * | 2018-05-22 | 2018-09-18 | 上海暖友实业有限公司 | Constant temperature spontaneous heating utensil containing phase-change microcapsule |
| CN108611058A (en) * | 2018-04-20 | 2018-10-02 | 安徽工业大学 | A kind of Nano-meter SiO_22- GO modified synergic microcapsule phase-change energy storage materials |
| CN108864913A (en) * | 2018-07-13 | 2018-11-23 | 安徽省神洲建材科技有限公司 | A method of water proof fire retardant resistant coating is formed on construction wall surface |
| CN109092220A (en) * | 2018-07-03 | 2018-12-28 | 南京林业大学 | A kind of synthetic method of bakelite resin nano microballoon |
| CN109880684A (en) * | 2019-01-28 | 2019-06-14 | 洛阳烨方新材料科技有限公司 | A kind of aqueous lauric acid dispersion liquid and preparation method thereof |
| CN110343511A (en) * | 2019-07-31 | 2019-10-18 | 北京林业大学 | A kind of nano-zirconium carbide modified paraffin phase-change microcapsule and preparation method thereof |
| CN110819308A (en) * | 2018-08-10 | 2020-02-21 | 北京天山新材料技术有限公司 | Phase change energy storage microcapsule and preparation method and application thereof |
| CN111545142A (en) * | 2020-05-21 | 2020-08-18 | 中国石油大学(华东) | High-temperature phase-change constant-temperature microcapsule, active temperature-control high-temperature drilling fluid system, and preparation and application thereof |
| CN111821926A (en) * | 2020-07-22 | 2020-10-27 | 襄阳三沃航天薄膜材料有限公司 | Preparation method of melamine phase change microcapsule with low formaldehyde content |
| WO2021012302A1 (en) * | 2019-07-24 | 2021-01-28 | 广州市香港科大霍英东研究院 | Phase change microcapsule having high blending fluidity and high phase change latent heat and preparation method therefor |
| CN112358846A (en) * | 2020-11-04 | 2021-02-12 | 碳元科技股份有限公司 | Two-component pouring sealant with low thermal expansion coefficient and preparation method thereof |
| CN113059642A (en) * | 2021-04-08 | 2021-07-02 | 广西壮族自治区林业科学研究院 | Preparation method and application of fragrance-releasing masson pine laminated wood |
| CN113773810A (en) * | 2021-09-17 | 2021-12-10 | 广州市香港科大霍英东研究院 | Melamine resin shell phase change microcapsule and preparation method thereof |
| CN113926400A (en) * | 2020-06-29 | 2022-01-14 | 顺启和(深圳)科技有限公司 | Microcapsule preparation method and cold storage agent |
| CN117264604A (en) * | 2023-09-20 | 2023-12-22 | 重庆诺奖二维材料研究院有限公司 | Preparation method and application of low-temperature-point phase-change material microcapsule |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1570014A (en) * | 2004-05-13 | 2005-01-26 | 天津大学 | Phase change energy storage microcapsule of composite shell and its making method |
| CN1903971A (en) * | 2006-08-01 | 2007-01-31 | 中国兵器工业集团第五三研究所 | Preparation method of phase change microcapsule |
| CN102417812A (en) * | 2011-09-28 | 2012-04-18 | 兰州理工大学 | N-tetradecyl alcohol phase-change microcapsule and preparation method thereof |
| CN103484078A (en) * | 2013-09-06 | 2014-01-01 | 上海应用技术学院 | Phase change material of safety urea resin micro-capsule and preparation method thereof |
| CN103752241A (en) * | 2014-01-24 | 2014-04-30 | 厦门大学 | Preparation method of lauryl alcohol/melamine-formaldehyde resin microcapsule phase-change material |
| CN104449587A (en) * | 2014-11-19 | 2015-03-25 | 辽宁大学 | Preparation method of paraffin microcapsules |
-
2015
- 2015-05-26 CN CN201510275889.9A patent/CN104861935A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1570014A (en) * | 2004-05-13 | 2005-01-26 | 天津大学 | Phase change energy storage microcapsule of composite shell and its making method |
| CN1903971A (en) * | 2006-08-01 | 2007-01-31 | 中国兵器工业集团第五三研究所 | Preparation method of phase change microcapsule |
| CN102417812A (en) * | 2011-09-28 | 2012-04-18 | 兰州理工大学 | N-tetradecyl alcohol phase-change microcapsule and preparation method thereof |
| CN103484078A (en) * | 2013-09-06 | 2014-01-01 | 上海应用技术学院 | Phase change material of safety urea resin micro-capsule and preparation method thereof |
| CN103752241A (en) * | 2014-01-24 | 2014-04-30 | 厦门大学 | Preparation method of lauryl alcohol/melamine-formaldehyde resin microcapsule phase-change material |
| CN104449587A (en) * | 2014-11-19 | 2015-03-25 | 辽宁大学 | Preparation method of paraffin microcapsules |
Non-Patent Citations (3)
| Title |
|---|
| 寿春燕等: "降低相变微胶囊制备过程中游离甲醛含量的方法研究", 《印染助剂》 * |
| 徐超星等: "尿素-三聚氰胺-甲醛树脂相变微胶囊的制备及性能", 《西南科技大学学报》 * |
| 黄全国等: "三聚氰胺-甲醛相变微胶囊制备及性能", 《高分子材料科学与工程》 * |
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105396523A (en) * | 2015-12-26 | 2016-03-16 | 孝感巨核新材料科技有限公司 | Preparation method of polymer wrapped paraffin phase-change microsphere |
| CN105648782A (en) * | 2016-03-31 | 2016-06-08 | 上海洋帆实业有限公司 | Preparation method of paraffin phase change microcapsule based thermoregulating shell fabric |
| CN106281237A (en) * | 2016-08-18 | 2017-01-04 | 中国工程物理研究院化工材料研究所 | Two urea groups wax class aggregations and preparation method thereof |
| CN106281237B (en) * | 2016-08-18 | 2020-03-24 | 中国工程物理研究院化工材料研究所 | Diureido wax aggregate and preparation method thereof |
| CN107243305A (en) * | 2017-04-26 | 2017-10-13 | 中国林业科学研究院木材工业研究所 | A kind of preparation method of nano cellulose crystal modified aminoresin microcapsules |
| CN108611058A (en) * | 2018-04-20 | 2018-10-02 | 安徽工业大学 | A kind of Nano-meter SiO_22- GO modified synergic microcapsule phase-change energy storage materials |
| CN108542589A (en) * | 2018-05-22 | 2018-09-18 | 上海暖友实业有限公司 | Constant temperature spontaneous heating utensil containing phase-change microcapsule |
| CN109092220A (en) * | 2018-07-03 | 2018-12-28 | 南京林业大学 | A kind of synthetic method of bakelite resin nano microballoon |
| CN108864913A (en) * | 2018-07-13 | 2018-11-23 | 安徽省神洲建材科技有限公司 | A method of water proof fire retardant resistant coating is formed on construction wall surface |
| CN110819308A (en) * | 2018-08-10 | 2020-02-21 | 北京天山新材料技术有限公司 | Phase change energy storage microcapsule and preparation method and application thereof |
| CN109880684A (en) * | 2019-01-28 | 2019-06-14 | 洛阳烨方新材料科技有限公司 | A kind of aqueous lauric acid dispersion liquid and preparation method thereof |
| WO2021012302A1 (en) * | 2019-07-24 | 2021-01-28 | 广州市香港科大霍英东研究院 | Phase change microcapsule having high blending fluidity and high phase change latent heat and preparation method therefor |
| CN110343511A (en) * | 2019-07-31 | 2019-10-18 | 北京林业大学 | A kind of nano-zirconium carbide modified paraffin phase-change microcapsule and preparation method thereof |
| CN111545142A (en) * | 2020-05-21 | 2020-08-18 | 中国石油大学(华东) | High-temperature phase-change constant-temperature microcapsule, active temperature-control high-temperature drilling fluid system, and preparation and application thereof |
| CN113926400A (en) * | 2020-06-29 | 2022-01-14 | 顺启和(深圳)科技有限公司 | Microcapsule preparation method and cold storage agent |
| CN111821926A (en) * | 2020-07-22 | 2020-10-27 | 襄阳三沃航天薄膜材料有限公司 | Preparation method of melamine phase change microcapsule with low formaldehyde content |
| CN111821926B (en) * | 2020-07-22 | 2022-08-09 | 襄阳三沃航天薄膜材料有限公司 | Preparation method of melamine phase change microcapsule with low formaldehyde content |
| CN112358846A (en) * | 2020-11-04 | 2021-02-12 | 碳元科技股份有限公司 | Two-component pouring sealant with low thermal expansion coefficient and preparation method thereof |
| CN113059642A (en) * | 2021-04-08 | 2021-07-02 | 广西壮族自治区林业科学研究院 | Preparation method and application of fragrance-releasing masson pine laminated wood |
| CN113773810A (en) * | 2021-09-17 | 2021-12-10 | 广州市香港科大霍英东研究院 | Melamine resin shell phase change microcapsule and preparation method thereof |
| CN113773810B (en) * | 2021-09-17 | 2023-12-29 | 广州市香港科大霍英东研究院 | Melamine resin shell phase change microcapsule and preparation method thereof |
| CN117264604A (en) * | 2023-09-20 | 2023-12-22 | 重庆诺奖二维材料研究院有限公司 | Preparation method and application of low-temperature-point phase-change material microcapsule |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104861935A (en) | Preparation method of phase change microcapsule | |
| Sami et al. | Thermal properties optimization of microencapsulated a renewable and non-toxic phase change material with a polystyrene shell for thermal energy storage systems | |
| CN107513375B (en) | Phase-change microcapsule coated with silicon dioxide and preparation method and application thereof | |
| Alkan et al. | Preparation, thermal properties and thermal reliability of microencapsulated n-eicosane as novel phase change material for thermal energy storage | |
| Wang et al. | Effects of fabricated technology on particle size distribution and thermal properties of stearic–eicosanoic acid/polymethylmethacrylate nanocapsules | |
| CN103484078A (en) | Phase change material of safety urea resin micro-capsule and preparation method thereof | |
| CN104650816A (en) | Low-temperature phase-change energy storage microcapsule and preparation method thereof | |
| CN103509527A (en) | Phase-change energy-storage microcapsule material and preparation method thereof | |
| Xu et al. | Efficient preparation and characterization of paraffin‐based microcapsules by emulsion polymerization | |
| CN104877642A (en) | Phase-change microcapsule composite material and preparation method thereof | |
| CN106367031A (en) | High thermal conductivity composite phase change microcapsule and preparation method thereof | |
| KR20200018307A (en) | Phase change energy storage microcapsule preparation and use thereof | |
| JP2012532741A (en) | Microcapsules with polyvinyl monomer as cross-linking agent | |
| CN101113322A (en) | Method for preparation of monodisperse phase-change microcapsule | |
| CN102531550A (en) | Poly fatty acid shape-stabilized phase change material and preparation method thereof | |
| CN105542721A (en) | Flame-retardant phase-change microcapsule and preparation method and application thereof | |
| CN104403058A (en) | Latex plugging agent for drilling fluid and preparation method thereof | |
| CN107384328A (en) | A kind of preparation method of phase-change microcapsule of inorganic material coating and its product and application | |
| CN104558393A (en) | N-tetradecanol phase change microcapsule and preparation method thereof | |
| US20150158003A1 (en) | Microcapsules having acrylic polymeric shells and methods of making same | |
| CN103170289A (en) | Method for preparing microcapsule phase change material by using composite emulsifier | |
| CN104357019A (en) | Low-temperature thermal control phase change microcapsule and preparation method thereof | |
| CN102391839B (en) | Supercooling phase change-inhibiting alkane microcapsule and preparation and application thereof | |
| CN109535691A (en) | A kind of thermochromic thin film and preparation method thereof | |
| Wang et al. | A novel method for the preparation of narrow-disperse nanoencapsulated phase change materials by phase inversion emulsification and suspension polymerization |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150826 |