CN101096298A - Organic phase-change composite expanding perlite and preparation method thereof - Google Patents
Organic phase-change composite expanding perlite and preparation method thereof Download PDFInfo
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- CN101096298A CN101096298A CNA2006100521606A CN200610052160A CN101096298A CN 101096298 A CN101096298 A CN 101096298A CN A2006100521606 A CNA2006100521606 A CN A2006100521606A CN 200610052160 A CN200610052160 A CN 200610052160A CN 101096298 A CN101096298 A CN 101096298A
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- organic phase
- change material
- expanded perlite
- phase change
- pearlstone
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/10—Coating or impregnating
- C04B20/1018—Coating or impregnating with organic materials
- C04B20/1029—Macromolecular compounds
- C04B20/1037—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/04—Silica-rich materials; Silicates
- C04B14/14—Minerals of vulcanic origin
- C04B14/18—Perlite
- C04B14/185—Perlite expanded
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/0068—Ingredients with a function or property not provided for elsewhere in C04B2103/00
- C04B2103/0071—Phase-change materials, e.g. latent heat storage materials used in concrete compositions
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/60—Agents for protection against chemical, physical or biological attack
- C04B2103/63—Flame-proofing agents
Abstract
The invention relates to an organic phase-change material composite expanded perlite with the phase-change thermoregulation function and its preparing method in the material science field, which encapsulates the organic phase-change material and the fire retarding agent and is made with the vacuum adsorption device which penetrates the organic phase-change material and the fire retarding agent in the internal pore space of the expanded perlite. The preparing method comprises the following steps: opening the air escape valve slowly after mixing the expanded perlite, the organic phase-change material and the fire retarding agent according to the proportion in the vacuum autoclave; reducing the vacuum degree to the atmosphere pressure in the autoclave; absorbing and penetrating the organic phase-change material and the fire retarding agent dissolved and encapsulated on the surface of the expanded perlite particle in the internal pore space of the expanded perlite; reducing the temperature; discharging; getting the organic phase-change material composite expanded perlite particle. The invention removes the mechanical property effect and fire prevention property effect of the building material, which guarantees the stability of high phase-change energy-storage heat capacity, the phase-change energy-storage skeletal material circulating work and penetrability resistance.
Description
Technical field
The present invention relates to building energy conservation and use the material field, relate in particular to organic phase-change composite expanding perlite with phase-changing and temperature-regulating function and preparation method thereof.
Background technology
The energy consumption of China unit's floor area of building is up to 3 times of the close developed country of weather condition, and 95% buildings belongs to high energy consumption building, about 30% of building energy consumption account whole society total energy consumption.Along with China's economic construction and real estate rapid growth, the China that resource scarcity, pollution are increasingly sharpened brings bigger electric power burden.Therefore, building energy conservation is a very important and urgent problem to China.
The thermal energy storage technology can be alleviated energy supply and demand unmatched contradiction on time and intensity of buildings, and the heating of balance buildings and air conditioner load improve the comfort level of living environment greatly.The heat application memory technology not only can be dwindled the scale of Cooling and Heat Source, saves initial cost, and because the network load time-of-use tariffs are divided the implementation of meter system, the heat application memory technology can also reduce the working cost of heating, air-conditioning system.In addition, the thermal energy storage technology also is effectively to store, utilize the important channel of low-cost clean energies such as sun power in the heating, air-conditioning system at buildings, helps environmental protection, energy-conservation.
The effective thermal energy storage of the application need of sun power, and phase change material (phase change material, a large amount of latent heats of phase change of required absorption and release have just in time satisfied this demand when PCM) undergoing phase transition, and the research and development of New-type phase change type energy-saving building materials are the focus and the forefront direction of current building energy saving field with using.
The ideal energy-storage materials of construction must meet the following conditions: 1) transformation temperature is near 20～26 ℃ of the comfort levels of human body; 2) have enough big latent heat of phase change and heat conductivity; 3) expand during phase transformation or shrinkability little; 4) reversibility of phase transformation will be got well; 5) nontoxicity, non-corrosiveness, nothing degraded, free from extraneous odour; 6) the making raw material is cheap and easy to get.Early stage research mainly concentrates on the inorganic hydrated salt that cheaply is easy to get, but since its serious mistake cold with separate out problem, the phase transformation material of construction recycles the back energy storage and reduces with transformation temperature scope fluctuation very greatly greatly, has limited its practical application in building material field greatly.For fear of the problems referred to above of inorganic phase-changing material, people have focused on research emphasis the anhydrous organism of low volatility again, as: polyoxyethylene glycol, lipid acid and paraffin derivative etc.Although their price is higher than common salt hydrate, and the hot storage capacity of unit is low, the physical and chemical performance that it is stable, and good thermal behavior and adjustable transformation temperature all make it have broad application prospects.
In in the past 20 years, the phase change material of containerization is applied to field of solar energy by market, but because its area that contacts with environment when phase transformation is too little, is not very effective and make its transmission ofenergy.On the contrary, the common building material conducts heat but for each regional passive type of buildings enough big contact area is provided, thereby has caused that people more pay attention to.The combination of research phase change material and common building material, the consistency of research phase change material and common building material and mix afterwards that heat accumulation, heat transfer, machinery and the fire performance of material are the key technical problems that PCM is applied to material of construction.
Current, the combination technology of PCM and base material mainly contains 3 kinds: directly add, immerse and encapsulation.Directly addition method is convenient to control the add-on of PCM, and immersing rule can handle the finished product material of construction.Encapsulation is exactly to comprise PCM with differing materials, shape and big or small capsule before directly adding.Encapsulation technology has two kinds of main method, and the one, little encapsulation technology, the particle with little spheric or rod is encapsulated in the thin high-molecular polythene film exactly, and then adds base material; The 2nd, big encapsulation technology is included in PCM bigger container such as test tube, spheroid, panel etc. exactly.These containers both can also can add in the building materials directly as heat exchanger.These technology or can influence the mechanical property of building materials perhaps have influence on the fire resistance of product, and practical application foreground causes anxiety.
And utilize " two-step approach " technology, promptly at first make the phase-change accumulation energy aggregate of high stable high heat capacity, adopt the phase-change accumulation energy aggregate again, prepare various types of phase-change accumulation energy concrete building materials with the technology of preparing of normal concrete, be the combination technology of most promising PCM and construction substrate, wide application prospect will be arranged.
Someone has applied for that (application number is a kind of organosilicon by name: CN03153207.1), belong to building material field from temperature adjustment energy-conserving and environment-protective materials for wall.Building materials and chemical industry are combined, utilize composite principle, by self heat change mechanism frequently, summer, 2-3 ℃ of room temperature decline reduced air-conditioning 50% power consumption by the body of wall physical modification of absorbing heat.By accumulation of heat, improve Greenhouse effect in the winter time.Easy construction, the new building of widespread use is decorated, and thoroughly overcomes cracking of wall surface, dewfall, peeling, congenital defect problem such as mouldy, and has fine sterilization, soundproof effect, improves residential amenity and function class.Its raw materials used proportioning is (kg/m3) diatomite 20-25; Brucite 12-15; Starch 4-6; Pyrophyllite; Chitosan; Organic silicon emulsion; Fiber rope C cetylate 5-7; Paraffin 5-8; Float pearl; Sodium hydroxide.It has certain effect of regulating the room temperature but DeGrain, unsuitable large-scale industrial production.The somebody has applied for that (application number is a kind of a kind of patent from temperature adjustment construction wall plastering mortar material and preparation method thereof by name: CN200310112982.5), providing a kind of can not ooze out, frost-free, its stable performance from temperature adjustment construction wall plastering mortar material and preparation method thereof.Technical scheme is: a kind of from temperature adjustment construction wall plastering mortar material, it is characterized in that: described mortar material contains the batching of following weight per-cent: phase change composite material 5～15%; Building sand 20～50%, gelling material 30～50%, anti-bacterium mildewproof additive 1～5%, surplus is a water.Its preparation method is: earlier with above-mentioned building sand, gelling material, anti-bacterium mildewproof additive, after surplus is the water thorough mixing, add phase change composite material again, be directly used in the building operation metope after mixing; Its production method is simple, and is time saving and energy saving, and the fluctuating range of room temperature reduces by 4～6 ℃, and air-conditioning reduces more than 2 hours/day duration of service, and cost is low, and is easy to spread and implement.But the work-ing life of its regulation range and material is lower, is difficult to the scale of beating and promotes.The somebody has applied for accumulation of energy material of construction by name and preparation method thereof, and (number of patent application is: CN200410041384.8), mixture and building substrate material that it is made up of capric acid, lauric acid are composited, and capric acid and lauric acid are pressed mass ratio (1～8): 1.Preparation method of the present invention heats capric acid and lauric acid respectively, treat that they melt fully after, mix to form a kind of capric acid and lauric eutectic mixture by above-mentioned proportional range; Again this eutectic mixture is heated to complete melted state, is compound in the building substrate material, form a kind of accumulation of energy material of construction.In building energy saving field, compound by materials for wall and energy-accumulation material, can increase the temperature regulation ability of buildings, reach energy-conservation and comfortable purpose.Attemperation (18-25 ℃) in transformation temperature of this energy-accumulation material (19-24 ℃) and the room matches, and latent heat of phase change higher (120-150kJ/kg) did not have the cold-peace phenomenon of phase separation, nontoxic, non-corrosiveness, stable performance, good reproducibility.Though it has solved the shortcoming that is separated, the hybrid mode of its phase change material and building base-material still is simple the mixing, and its effect is relatively poor.
Summary of the invention
The purpose of this invention is to provide a kind ofly have that complex phase microstructure, stability are good, phase-change accumulation energy thermal capacitance height, technology is simple, cost is low, the phase-change accumulation energy aggregate of easy enforcement is organic phase-change composite expanding perlite and preparation method thereof.
Above-mentioned radix purpose of the present invention is achieved by technical scheme once:
A kind of organic phase change material composite expanded perlite, it is characterized in that it is made up of pearlstone, organic phase change material and fire retardant, this three's mass ratio is 1: 0.5～5: 0.1～0.5, and described organic phase change material and fire retardant are in the pearlstone.Described pearlstone is that a kind of unit weight that perlite natural mineral raw particle is made through high temperature roast foam process is 80～200kg/m
3Phyllosilicate honeycombed grain aggregate, described organic phase change material is generally the mixture that organosilicon or n-butyl stearate, organic resin emulsion, solidifying agent are formed, it can also be the material that lauryl alcohol or tetradecyl alcohol and mineral substance are formed, can also be polyvinyl alcohol, paraffin, n-hexadecane, n-heptadecane etc., described fire retardant purpose is to prevent that organic phase change material from burning under hot conditions, is generally common material of construction usefulness fire retardant such as boric acid, borax, ammonium phosphate, phosphoric acid, halogenation stone sodium, halogenous alkane etc.
As preferably, described organic phase change material is that fusing point is one or more in 15～40 ℃ polyoxyethylene glycol, lipid acid, paraffin or the paraffin derivative.Preferred transformation temperature is at 20～28 ℃ above-mentioned materials.
As preferably, described fire retardant is one or more in ammonium phosphate, phosphoric acid or the Halogen alkane.
As preferably, described pearlstone is normal expanded perlite or surperficial clinkering pearlstone, and its particle grain size scope is 1～12mm.Clinkering pearlstone in surface is through the quick high-temp heat treated with the normal expanded perlite particle, the novel pearlstone kind of a kind of particle surface segment glassization that obtains, compare with the normal expanded perlite particle, it has intensity height, characteristics that rate of permeation is low, and is with the obvious advantage for the stably stored of organic phase change material.
The preparation method of above-mentioned organic phase change material composite expanded perlite, that adopt is the vacuum suck preparation method, its step is as follows: in vacuum reaction still or other container, pearlstone, organic phase change material and fire retardant are mixed by mass ratio 1: 0.5～5: 0.1～0.5 under 50～180 ℃ temperature; Slowly open the venting valve, reduce the interior vacuum tightness of reactor to normal pressure, the organic phase change material and the complete adsorption and permeation of fire retardant that dissolving also evenly are wrapped in the expanded perlite granule surface enter the expanded perlite granule internal void; Cooling, discharging has promptly obtained organic phase change material composite expanded perlite particle.
Therefore, the present invention has following beneficial effect:
1. organic phase change material and fire retardant have penetrated into the expanded perlite granule internal void fully, thereby solved organic phase change material and common building material bonded key technical problem, eliminated the influence of organic phase change material building material machinery performance and fire resistance.
2. the whole process of organic phase change material circulating phase-change all betides in the expanded perlite granule internal void, has thoroughly solved the cycle operation stability and the impermeable stability of phase-change accumulation energy aggregate.
3. made full use of the characteristics of light unit weight of expanded perlite granule and big internal void, realized higher organic phase change material incorporation, guaranteed that this New-type phase change energy storage aggregate has high phase-change accumulation energy thermal capacitance.
4. preparation technology is simple, and easy to implement and control is beneficial to industrialization promotion and uses.
Embodiment
The present invention is further illustrated below by embodiment.
Embodiment 1: in the vacuum reaction still, pressure is 0.05MPa, is that surperficial clinkering type pearlstone, the fusing point of 1～4mm is that polyoxyethylene glycol organic phase change material and ammonium phosphate fire retardant about 20 ℃ mixes by mass ratio under 50～60 ℃ temperature at 1: 5: 0.5 with particle size range; Slowly open the venting valve, reduce the interior vacuum tightness of reactor to normal pressure, the polyoxyethylene glycol and the fire retardant adsorption and permeation that dissolving also evenly are wrapped in the expanded perlite granule surface enter the expanded perlite granule internal void; Cooling, discharging has promptly obtained transformation temperature and is the organic phase change material composite expanded perlite about 20 ℃.Promptly can be used for building operation in the composite expanded perlite adding concrete with gained, add 10～40 kilograms of composite expanded perlite particles in general per hundred kilograms of concrete.
By to the painted in advance of polyoxyethylene glycol and adopt opticmicroscope that the test analysis of organic phase change material composite expanded perlite particle section situation is shown that polyoxyethylene glycol and fire retardant have penetrated into the expanded perlite granule internal void fully.This organic phase change material composite expanded perlite particulate material surface is hydrophilic substantially, dieseling can not occur in the flame, is heating repeatedly under 2000 round-robin situations of cooling simultaneously, the situation of polyoxyethylene glycol and fire retardant seepage and decomposition can not occur.After adding composite expanded perlite particle of the present invention, made wallboard can reduce about 7 ℃ of fluctuations in indoor temperature, and energy-saving effect is remarkable.
Embodiment 2
In the vacuum reaction still, pressure is 0.08Mpa, is that normal expanded perlite, the fusing point of 5～12mm is that lipid acid organic phase change material and fire retardant about 30 ℃ mixes by mass ratio under 100～110 ℃ temperature at 1: 2: 0.2 with particle size range; Slowly open the venting valve, reduce the interior vacuum tightness of reactor to normal pressure, the lipid acid and the fire retardant adsorption and permeation that dissolving also evenly are wrapped in the expanded perlite granule surface enter the expanded perlite granule internal void; Cooling, discharging has promptly obtained transformation temperature and is the organic phase change material composite expanded perlite particle about 30 ℃.
By to the painted in advance of lipid acid and adopt opticmicroscope that the test analysis of organic phase change material composite expanded perlite particle section situation is shown that lipid acid and fire retardant have penetrated into the expanded perlite granule internal void fully.This organic phase change material composite expanded perlite particulate material surface is hydrophilic substantially, dieseling can not occur in the flame, is heating repeatedly under 2000 round-robin situations of cooling simultaneously, the situation of lipid acid seepage and decomposition can not occur.
Embodiment 3
In the vacuum reaction still, pressure is 0.03Mpa, is that normal expanded perlite, fusing point about 8～10mm is that paraffin organic phase change material and fire retardant about 35 ℃ mixes by mass ratio under 140 ℃ temperature at 1: 0.5: 0.1 with particle diameter; Slowly open the venting valve, reduce the interior vacuum tightness of reactor to normal pressure, the paraffin and the fire retardant adsorption and permeation that dissolving also evenly are wrapped in the expanded perlite granule surface enter the expanded perlite granule internal void; Cooling, discharging has promptly obtained transformation temperature and is the organic phase change material composite expanded perlite particle about 35 ℃.
By to the painted in advance of paraffin and adopt opticmicroscope that the test analysis of organic phase change material composite expanded perlite particle section situation is shown that paraffin and fire retardant have penetrated into the expanded perlite granule internal void fully.This organic phase change material composite expanded perlite particulate material surface is hydrophilic substantially, dieseling can not occur in the flame, is heating repeatedly under 2000 round-robin situations of cooling simultaneously, the situation of paraffin seepage and decomposition can not occur.
Claims (6)
1, a kind of organic phase change material composite expanded perlite, it is characterized in that it is made up of pearlstone, organic phase change material and fire retardant, this three's mass ratio is 1: 0.5～5: 0.1～0.5, and described organic phase change material and fire retardant are in the pearlstone.
2, organic phase change material composite expanded perlite according to claim 1 is characterized in that described fire retardant is one or more in ammonium phosphate, phosphoric acid or the Halogen alkane.
3, organic phase change material composite expanded perlite according to claim 1 is characterized in that described organic phase change material is one or more in polyoxyethylene glycol, lipid acid, paraffin or the paraffin derivative of fusing point between 15～40 ℃.
4, according to claim 1 or 2 or 3 described organic phase change material composite expanded perlites, it is characterized in that described pearlstone is normal expanded perlite or surperficial clinkering pearlstone, its particle grain size scope is 1～12mm.
5, a kind of method of making the described organic phase change material composite expanded perlite of claim 1 is characterized in that it may further comprise the steps:
A: under the low pressure condition, pearlstone, organic phase change material and fire retardant are mixed by mass ratio 1: 0.5～5: 0.1～0.5 under 50～180 ℃ temperature;
B: system is risen to normal pressure, and the organic phase change material and the complete adsorption and permeation of fire retardant that dissolving also evenly are wrapped in the pearlstone surface enter the expanded perlite granule internal void;
C: cooling, discharging has promptly obtained the organic phase change material composite expanded perlite.
6,, it is characterized in that described low pressure condition is that pressure is less than 0.05Mpa according to the method for the described manufacturing organic phase change material of claim 5 composite expanded perlite.
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| CNA2006100521606A CN101096298A (en) | 2006-06-28 | 2006-06-28 | Organic phase-change composite expanding perlite and preparation method thereof |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101967811A (en) * | 2009-07-27 | 2011-02-09 | 北京仁创科技集团有限公司 | Hydraulic structure |
| CN101698580B (en) * | 2009-10-27 | 2011-08-17 | 信阳天意节能技术有限公司 | Totally closed shell-shaped phase change and temperature adjustment aggregate and method for preparing same |
| CN102322110A (en) * | 2011-07-19 | 2012-01-18 | 中国科学院深圳先进技术研究院 | Intelligent temperature regulating polyurethane energy-saving plate and manufacturing method thereof |
| CN102516948A (en) * | 2011-12-06 | 2012-06-27 | 辽宁科隆精细化工股份有限公司 | Process for synthesizing polyethylene glycol (PEG) phase change thermal insulation material |
| CN104357018A (en) * | 2014-10-10 | 2015-02-18 | 中关村人居环境工程与材料研究院 | Environment-friendly composite phase change material and phase change energy storage device |
| CN104877304A (en) * | 2015-06-05 | 2015-09-02 | 浙江省林业科学研究院 | Preparation method for bamboo liquefaction phenolic resin end-capped perlite-loaded phase change material |
| CN107189761A (en) * | 2017-05-08 | 2017-09-22 | 胡建农 | The preparation method of phase-changing and temperature-regulating Diatom Assemblagess thing, phase-changing and temperature-regulating diatom plate and the phase-changing and temperature-regulating diatom plate |
| CN112457524A (en) * | 2020-12-11 | 2021-03-09 | 常熟理工学院 | Phosphorus flame retardant and preparation method thereof |
| CN115074090A (en) * | 2022-07-25 | 2022-09-20 | 深圳市中黄实业有限公司 | High-temperature composite phase-change heat storage material and preparation method thereof |
-
2006
- 2006-06-28 CN CNA2006100521606A patent/CN101096298A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101967811A (en) * | 2009-07-27 | 2011-02-09 | 北京仁创科技集团有限公司 | Hydraulic structure |
| CN101698580B (en) * | 2009-10-27 | 2011-08-17 | 信阳天意节能技术有限公司 | Totally closed shell-shaped phase change and temperature adjustment aggregate and method for preparing same |
| CN102322110A (en) * | 2011-07-19 | 2012-01-18 | 中国科学院深圳先进技术研究院 | Intelligent temperature regulating polyurethane energy-saving plate and manufacturing method thereof |
| CN102516948A (en) * | 2011-12-06 | 2012-06-27 | 辽宁科隆精细化工股份有限公司 | Process for synthesizing polyethylene glycol (PEG) phase change thermal insulation material |
| CN102516948B (en) * | 2011-12-06 | 2013-11-27 | 辽宁科隆精细化工股份有限公司 | Process for synthesizing polyethylene glycol (PEG) phase change thermal insulation material |
| CN104357018A (en) * | 2014-10-10 | 2015-02-18 | 中关村人居环境工程与材料研究院 | Environment-friendly composite phase change material and phase change energy storage device |
| CN104357018B (en) * | 2014-10-10 | 2017-11-24 | 中关村人居环境工程与材料研究院 | A kind of environmentally friendly phase change energy storage apparatus |
| CN104877304A (en) * | 2015-06-05 | 2015-09-02 | 浙江省林业科学研究院 | Preparation method for bamboo liquefaction phenolic resin end-capped perlite-loaded phase change material |
| CN104877304B (en) * | 2015-06-05 | 2018-05-29 | 浙江省林业科学研究院 | A kind of preparation method of bamboo liquefied phenolic resin sealing end perlite load phase-change material |
| CN107189761A (en) * | 2017-05-08 | 2017-09-22 | 胡建农 | The preparation method of phase-changing and temperature-regulating Diatom Assemblagess thing, phase-changing and temperature-regulating diatom plate and the phase-changing and temperature-regulating diatom plate |
| CN112457524A (en) * | 2020-12-11 | 2021-03-09 | 常熟理工学院 | Phosphorus flame retardant and preparation method thereof |
| CN115074090A (en) * | 2022-07-25 | 2022-09-20 | 深圳市中黄实业有限公司 | High-temperature composite phase-change heat storage material and preparation method thereof |
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