CN102303958A - Rice hull ash-paraffin wax phase-change aggregate and preparation method thereof - Google Patents
Rice hull ash-paraffin wax phase-change aggregate and preparation method thereof Download PDFInfo
- Publication number
- CN102303958A CN102303958A CN201110127668A CN201110127668A CN102303958A CN 102303958 A CN102303958 A CN 102303958A CN 201110127668 A CN201110127668 A CN 201110127668A CN 201110127668 A CN201110127668 A CN 201110127668A CN 102303958 A CN102303958 A CN 102303958A
- Authority
- CN
- China
- Prior art keywords
- rice hull
- hull ash
- paraffin
- phase change
- wax phase
- 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
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Abstract
The invention relates to a rice hull ash-paraffin wax phase-change aggregate and a preparation method thereof. The rice hull ash-paraffin wax phase-change aggregate is characterized by comprising three materials including rice hull ash, paraffin wax and mineral powder, wherein the mass of the mineral powder accounts for 35 to 50 percent of the total mass of the rice hull ash, paraffin wax and mineral powder; and the mass ratio of paraffin wax to rice hull ash ranges from 1:1 to 1:5. The method comprises: mixing industrial rice hull ash and paraffin wax, and heating the mixture to allow the paraffin wax to melt into the pores in the rice hull ash, wherein a certain negative pressure is generated in the container by high-low temperature regulation to increase the melt amount of paraffin wax in the rice hull ash; sieving the mixed product of the rice hull ash and paraffin wax to obtain small particles of the mixed product; covering the small particles with powder; and thus, obtaining the rice hull ash-paraffin wax phase-change aggregate. The preparation process of the rice hull ash-paraffin wax phase-change aggregate is simple and low in cost, the paraffin wax content in the aggregate is high, the temperature control effect is desirable, and the adaptability to concrete is high.
Description
Technical field
The present invention relates to the phase change material field, concrete is to be used for the rice hull ash-wax phase change of cement concrete temperature control is gathered materials.
Background technology
The mass concrete temperature is destroyed and always is very serious engineering problem, and at present, the application of phase change material in concrete become a research focus.Phase change material has thermal storage effect; When temperature is increased to transformation temperature, produce phase transformation and absorb heat; And can also phase transformation emit heat constantly when temperature is reduced to transformation temperature, therefore can be used for suppressing the hydration heat temperature rise rate of mass concrete, thereby avoid concrete deformation to destroy.
Phase change material generally can be divided into 4 types according to the phase transformation mode: solid-solid phase transition material, solid-liquid phase change material, solid-gas phase become material and liquid-gas phase becomes material.The solid-solid phase transition material transformation temperature is higher usually; Be inappropriate in concrete and use; Gu-gas phase change material and liquid-gas phase produce gas when becoming material owing to phase transformation; Volumetric expansion is bigger; So also be not suitable for concrete, and some solid-liquid phase change materials just can satisfy the requirement of in concrete, using.And in the solid-liquid phase change material; Paraffin is both economical and practical a kind of; Phase change material in being applied to concrete is paraffin mostly now; But because paraffin is inappropriate for and directly is used for concrete; And paraffin particles will bond together under high slightly temperature; Be difficult for preserving, therefore, when using, need it is encapsulated.At present, preparation typing phase change composite material mainly contains 3 kinds of methods: micro encapsulation, porous material absorption method, melt-blending process.
The micro-encapsulated phase change material is to adopt microcapsulary that solid-liquid phase change material (core) is coated stable solid particulate under the normality of processing with synthesized polymer material or mineral compound with physics or chemical process.But the technology of this method comparatively complicacy and cost is higher, is not suitable in the lower material of the big cost of this side's amount of mass concrete, using.The porous material absorption method is to study wider typing encapsulation technology at present, and it is that porous material is immersed the phase transformation solution under the molten state, and phase change material is filled in the hole of porous material.Studying more being used to adsorbs the porous material of phase change material pearlstone, vermiculite, sepiolite, polynite, expanded graphite, haydite etc. is arranged; But these materials are because the character characteristics of itself etc.; Packaging efficiency to phase change material is lower, and comparatively significantly hydro-planing in practical application, occurs.Melt-blending process is meant under the temperature that is higher than the high molecular polymer fusing point; Phase change material and high molecular polymer are carried out melt blending; When being cooled to room temperature; Phase change material is evenly dispersed in the solidified high molecular polymer; Reach the purpose of typing; This method phase change material amount of taking in is big, non-leakage, can be processed into the Any shape that needs, but its capacity of heat transmission is poor, and price is high.
Existing phase change material has mostly and float phenomenon on serious, and the particle diameter of phase change material is big more with concrete mixing the time, on float seriously more, this is that the ratio of its buoyancy and gravity is also big more, and is easy more floating because phase change material is lighter, and particle is big more.Therefore; The phase change material of in concrete, using should have smaller particle size, makes its buoyancy suffered in concrete be not more than its gravity and suffered resistance sum, moreover; Should make the phase change material surface have wetting ability preferably, thereby improve phase change material and concrete workability.
Have only used phase change material and concrete to have workability preferably, can not cause damage or lose not quite, and phase change material be comparatively economical, and phase change material is applicable in concrete concrete other performances.
Involved in the present invention to rice hull ash be to burn by rice husk, China produces rice big country, the quantity of the rice hull ash of being produced also is very huge, at present, rice hull ash is mainly used in and prepares white carbon black, gac, silicon-dioxide and water glass etc., but application quantity is limited.Rice hull ash has abundant pore structure, and when mixing fresh concrete, water requirement is bigger, has a strong impact on its applying in concrete.But a large amount of pore structure of rice hull ash just in time is the good carrier of paraffin, has bigger value of exploiting and utilizing.
Summary of the invention
For overcoming above deficiency, the invention provides a kind of economical and practical rice hull ash-wax phase change and gather materials and preparation method thereof.
The technical scheme that the rice hull ash-wax phase change of content of the present invention is gathered materials is achieved in that
A kind of rice hull ash-wax phase change is gathered materials; It is characterized in that it is made up of rice hull ash, paraffin and three kinds of materials of mineral powder; The quality of mineral powder accounts for 35%～50% of rice hull ash, paraffin and mineral powder quality, and wherein the mass ratio of paraffin and rice hull ash is 1: 1～1: 1.5.
Said paraffin is filled in the hole of rice hull ash, has filled the rice hull ash of paraffin and has reunited together, is particulate state, shown in Figure of description 1; Said mineral powder is wrapped in particle surface, shown in Figure of description 2.
Said paraffin and rice hull ash mass ratio be 1: 1～1: 1.5.
Said mineral powder is a kind of in flyash, breeze, silicon ash, limestone powder or the phosphorus slag powder.
The quality of said mineral powder accounts for 35%～50% of rice hull ash-wax phase change aggregate quality.
The preparation method that the present invention also further provides this rice hull ash-wax phase change to gather materials is characterized in that it comprises the steps:
1) choosing of raw material: the quality by mineral powder accounts for 35%～50% of rice hull ash, paraffin and mineral powder quality, and wherein the mass ratio of paraffin and rice hull ash is 1: 1～1: 1.5, chooses rice hull ash, paraffin and mineral powder;
2) with rice hull ash and paraffin through after screening, mixing, place container to seal, in hot environment, be incubated 6～10 hours after, the gas in the container is emitted, sealing places container low temperature environment to be incubated 2～6 hours then; Take out container, the combination product of rice hull ash and paraffin is dispersed into the particle that particle diameter is less than or equal to 1.18mm; Again particle is mixed with mineral powder, make mineral powder be bonded in the surface, obtain rice hull ash-wax phase change and gather materials.
The rice hull ash raw material particle size that is adopted in this method is less than or equal to 1.18mm; For solid-state, particle diameter is less than or equal to 2.36mm to the paraffin raw material that is adopted at normal temperatures.
The mass ratio of paraffin and rice hull ash is 1: 1～1: 1.5.
Said hot environment is 1.5～3.5 times of the pairing temperature of heat absorption main peak vertex of wax phase change, and said low temperature environment is 0.8～1.5 times of the pairing temperature of heat absorption main peak vertex of wax phase change.
Industrial paraffin has various labels, and such as No. 48, No. 52, No. 56, No. 58, No. 62 commonly used etc., for example No. 48 is 48 ℃ with regard to the mean value that is meant wax phase change point, and No. 52 is 52 ℃ with regard to the mean value that is meant wax phase change point.Paraffin is that carbonatoms is about 18～30 hydrocarbon mixture, and main ingredient is straight-chain paraffin (being about 80%～95%), also has on a small quantity with the alkane of indivedual side chains and the single-ring naphthene of belt length side chain (both add up to content below 20%).Every type of wax is pressed fusing point again, and is general every at a distance from 2 ℃, is divided into different kinds.
The pairing temperature of heat absorption main peak vertex of mentioned wax phase change in the specification sheets, with shown in the accompanying drawing 4, Fig. 3 is the DSC curve of No. 48 paraffin like Figure of description 3, Fig. 4 is the DSC curve of No. 58 paraffin.That is to say that the pairing temperature of heat absorption main peak vertex of the phase transformation of different paraffin is different.
2.5 times of the pairing temperature of heat absorption main peak vertex that preferred elevated temperature environment of the present invention is a wax phase change, 1.2 times of the pairing temperature of heat absorption main peak vertex that preferred low temperature environment is a wax phase change.
Among the preparation method that rice hull ash-wax phase change of the present invention is gathered materials, used mineral powder is a kind of in flyash, breeze, silicon ash, limestone powder or the phosphorus slag powder, and its consumption is 35%～50% of rice hull ash-wax phase change aggregate quality.
The present invention also provides a kind of method that preferably makes powder adhesion at particle surface:
With two parts of quality such as said mineral powder is divided into; Getting a copy of it powder mixes with the combination product particle of paraffin with rice hull ash; Place 0.9 times environment of the pairing temperature of heat absorption main peak vertex of wax phase change to be incubated 20 minutes, take out, again with another part powder thorough mixing.
The present invention is a porous character of utilizing rice hull ash; Paraffin is incorporated in the space of rice hull ash; Through high temperature and cryogenic adjusting; Make and produce subnormal ambient in the container; Thereby increase the incorporate amount of paraffin in rice hull ash, improve the packaging efficiency of paraffin significantly, the combination product with rice hull ash and paraffin is dispersed into little particle again; With powder this product is carried out surface modification then, to make it to adapt to concrete job requirement.
Application examples 1
Rice hull ash-wax phase change is gathered materials and is particulate state, therefore its instead of part sand should be used in use.With rice hull ash-wax phase change gather materials by etc. quality replace two kinds of mix mortars of sand and equal-volume replacement sand; The clean volume of its paraffin is 15% of a gelling material; The result shows; When quality such as employing replace; The gelling of mortar is relatively poor, does not have flowability, when increasing water consumption and water reducer consumption, still can not improve liquidity; And serious excreting water phenomenon appears, it is excessive to be equivalent to the sand consumption.But when adopting equal-volume to replace, mix mortar workability is good, even is better than benchmark appearance, so rice hull ash-wax phase change is gathered materials and adopted equal-volume to replace.
Application examples 2
Get cement 600g and carry out temperature rise test; For the ease of contrast; The combination product of test group admixture rice hull ash and paraffin (particle); The clean volume of paraffin is 15% of a cement quality relatively; Comparative group is respectively plain cement slurry, admixture standard sand and paraffin refined wax particle, wherein, and standard sand consumption and the same volume of test group combination product; The paraffin refined wax particle is identical with the clean volume of the paraffin of test group, and test-results is shown in Figure of description 5.
Can be found out that by Fig. 5 test group has superior temperature control performance, illustrate that the combination product of rice hull ash and paraffin obviously is better than the temperature control performance of paraffin refined wax, it makes the temperature rise rate of hydration heat of cement that reducing by a relatively large margin arranged, and warm peak obviously reduces.And test shows that the volume of the slurry of the slurry of the combination product of admixture rice hull ash and paraffin and admixture paraffin refined wax differs and not quite, the former volume only is 1.117 times of the latter.
Application examples 3
100mm * 100mm * 100mm cube concrete test block is adopted in this test, and the test water-cement ratio is 0.38, and water reducer is a polycarboxylate water-reducer, and solid content is 10%, and concrete mix is seen table 1.
The moulding scheme:
A. the concrete sample that gathers materials of admixture rice hull ash-wax phase change not is benchmark group sample.
B. the concrete sample that gathers materials of admixture rice hull ash-paraffin, the detergent wax volume is respectively 10% and 20% relatively.
Table 1 concrete mix
Annotate: R-P is rice hull ash-wax phase change and gathers materials
As shown in table 1; The concrete proportioning strength grade is C40; Wherein comparative group A is general concrete; Experiment group B 10 is the phase transformation concrete that admixture rice hull ash-wax phase change is gathered materials with B20; The clean relatively volume of the paraffin of B10 is 10% of a gelling material quality, and the clean relatively volume of the paraffin of B20 is 20% of a gelling material quality, and the ultimate compression strength result of concrete 28d is: A is 49.8Mpa; B10 is 43.6Mpa, and B20 is 36.3Mpa.The concrete ultimate compression strength that admixture rice hull ash-wax phase change is gathered materials is lower than normal concrete, and volume hard intensity is low more more, but be 10% o'clock of gelling material quality at the clean relatively volume of paraffin, still can satisfy the strength grade requirement.Under the situation that adulterants such as a large amount of flyash exist, the ratio of the amount of the relative cement of paraffin net content is bigger, therefore can suppress the rate temperature change of mass concrete preferably, reduces Wen Feng.
Show that through the concrete anti-carbonization test of phase transformation, impervious test the phase transformation concrete has superior anti-carbonation properties and resistance of chloride ion penetration ability.Detect its volume stability through low temperature-high temperature-cryogenic thermal cycling, the result shows that the concrete volume stability of phase transformation slightly is better than normal concrete.
Technology of the present invention is simple, economy, paraffin packaging efficiency are high, can reduce the Wen Feng of hydration heat of cement largely, delays the intensification and the rate of temperature fall of hydrated cementitious preferably; And during with concrete mixing; Has good operation adaptability, uniform distribution in concrete, no hydro-planing.
To sum up visible, rice hull ash-wax phase change is gathered materials and is had bigger using value.
Description of drawings
The internal structure that Fig. 1 rice hull ash-wax phase change is gathered materials, wherein paraffin is filled in the space of rice hull ash, and the rice hull ash particle agglomeration of having filled paraffin is particulate state together.
Be labeled as among the figure: 1 rice hull ash hole, 2 paraffin
The surface topography that Fig. 2 gathers materials for rice hull ash-wax phase change, surface adhesion one deck limestone powder.
Fig. 3 is the DSC curve of No. 48 paraffin
Fig. 4 is the DSC curve of No. 58 paraffin
Fig. 5 is temperature rise test result curve figure
Embodiment
Below will combine embodiment and application examples that the present invention is further set forth:
Get the rice hull ash 3Kg of particle diameter less than 1.18mm, particle diameter is not more than paraffin (the pairing temperature of heat absorption main peak vertex of phase transformation is 52 ℃) the particle 3Kg of 2.36mm, mixes, and places sealing in the metal vessel.Then metal vessel is placed 78 ℃ of hot environment insulations after 10 hours, open the purging valve of metal vessel, exitted for 5 seconds, valve-off is so that the air pressure in the container and the air pressure of hot environment reach balance.
Then metal vessel is transferred in another low temperature environment of 42 ℃ and is incubated 6 hours.In lower environment, form negative pressure state in the metal vessel, more help in the pore structure of paraffin entering rice hull ash.
Take out metal vessel, the combination product of rice hull ash and paraffin is dispersed into the particle that particle diameter is less than or equal to 1.18mm, obtain the combination product particle.
Take by weighing the 3.2Kg limestone powder, combination product particle and powder are mixed, make powder adhesion, obtain rice hull ash-wax phase change and gather materials on combination product particulate surface.
Rice hull ash-the wax phase change that adopts this method to make is gathered materials, and paraffin is filled in the hole of rice hull ash, the rice hull ash particle agglomeration of having filled paraffin together, paraffin and rice hull ash mass ratio be 1: 1.Limestone powder is wrapped in particle surface, and its quality accounts for 35% of rice hull ash-wax phase change aggregate quality.
Get the rice hull ash 3Kg that particle diameter is 1.18mm, particle diameter is not more than paraffin (the pairing temperature of heat absorption main peak vertex of phase transformation is 48 ℃) the particle 2Kg of 2.36mm, mixes, and places sealing in the metal vessel.Then metal vessel is placed in 160 ℃ the baking oven and be incubated.
After heating 6 hours, open the purging valve of metal vessel, exitted for 5 seconds valve-off.So that the air pressure of 160 ℃ of environment reaches balance in air pressure in the container and the baking oven.
Metal vessel is transferred in another baking oven of 72 ℃ insulation 2 hours.In lower environment, form negative pressure state in the metal vessel, more help in the pore structure of paraffin entering rice hull ash.
Take out metal vessel, the combination product of rice hull ash and paraffin is dispersed into the particle that particle diameter is less than or equal to 1.18mm, obtain the combination product particle.
Take by weighing 5Kg flyash, be divided into two parts, every part of 2.5Kg.The combination product particle of getting a copy of it and rice hull ash and paraffin mixes, and places enamel tray 43 ℃ of baking oven insulations 20 minutes, takes out, and with another part flyash thorough mixing, the products therefrom particle is rice hull ash-wax phase change and gathers materials again.
Rice hull ash-the wax phase change that adopts this method to make is gathered materials, and paraffin is filled in the hole of rice hull ash, the rice hull ash particle agglomeration of having filled paraffin together, paraffin and rice hull ash mass ratio be 1: 1.5.Flyash is wrapped in particle surface, and its quality accounts for 50% of rice hull ash-wax phase change aggregate quality.
Embodiment 3
Get the rice hull ash 3Kg of particle diameter less than 1.18mm, particle diameter is not more than paraffin (the pairing temperature of heat absorption main peak vertex of phase transformation is 48 ℃) the particle 2.4Kg of 2.36mm, mixes, and places sealing in the metal vessel.Then metal vessel is placed in 120 ℃ the baking oven and be incubated.
After heating 8 hours, open the purging valve of metal vessel, exitted for 5 seconds valve-off.So that the air pressure of 120 ℃ of environment reaches balance in air pressure in the container and the baking oven.
Metal vessel is transferred in another baking oven of 58 ℃ insulation 4 hours.In lower environment, form negative pressure state in the metal vessel, more help in the pore structure of paraffin entering rice hull ash.
Take out metal vessel, be sized to rapidly in the clean enamel tray with the combination product of 1.18mm square hole sieve with rice hull ash and paraffin, wherein square hole sieve places 58 ℃ baking oven preheating in advance.The combination product particle of the rice hull ash of gained and paraffin cools off at normal temperatures.
Take by weighing 3.6Kg silicon ash, be divided into two parts, every part of 1.8Kg.The combination product particle of getting a copy of it and rice hull ash and paraffin mixes, and places enamel tray 43 ℃ of baking oven insulations 20 minutes, takes out, and with another part silicon ash thorough mixing, the products therefrom particle is rice hull ash-wax phase change and gathers materials again.
Rice hull ash-the wax phase change that adopts this method to make is gathered materials, and paraffin is filled in the hole of rice hull ash, the rice hull ash particle agglomeration of having filled paraffin together, paraffin and rice hull ash mass ratio be 1: 1.25.The silicon ash is wrapped in particle surface, and its quality accounts for 40% of rice hull ash-wax phase change aggregate quality.
Claims (8)
1. a rice hull ash-wax phase change is gathered materials; It is characterized in that it is made up of rice hull ash, paraffin and three kinds of materials of mineral powder; The quality of mineral powder accounts for 35%～50% of rice hull ash, paraffin and mineral powder quality, and wherein the mass ratio of paraffin and rice hull ash is 1: 1～1: 1.5.
2. gather materials by the described rice hull ash-wax phase change of claim 1, it is characterized in that said paraffin is filled in the hole of rice hull ash, filled the rice hull ash of paraffin and reunited together, be particulate state; Said mineral powder is wrapped in particle surface.
3. gather materials by claim 1 or 2 described rice hull ash-wax phase change, it is characterized in that said mineral powder is a kind of in flyash, silicon ash, limestone powder or the phosphorus slag powder.
4. the preparation method that rice hull ash-wax phase change is gathered materials is characterized in that it comprises the steps:
1) choosing of raw material: the quality by mineral powder accounts for 35%～50% of rice hull ash, paraffin and mineral powder quality, and wherein the mass ratio of paraffin and rice hull ash is 1: 1～1: 1.5, chooses rice hull ash, paraffin and mineral powder;
2) with rice hull ash and paraffin through after screening, mixing, place container to seal, in hot environment, be incubated 6～10 hours after, the gas in the container is emitted, sealing places container low temperature environment to be incubated 2～6 hours then; Take out container, the combination product of rice hull ash and paraffin is dispersed into the particle that particle diameter is less than or equal to 1.18mm; Again particle is mixed with mineral powder, make mineral powder be bonded in the surface, obtain rice hull ash-wax phase change and gather materials.
5. the preparation method who gathers materials by the described rice hull ash-wax phase change of claim 4 is characterized in that said rice hull ash particle diameter is less than or equal to 118mm; Said paraffin is solid-state at normal temperatures, and particle diameter is less than or equal to 2.36mm.
6. the preparation method who gathers materials by the described rice hull ash-wax phase change of claim 4; It is characterized in that said hot environment is 1.5～3.5 times of the pairing temperature of heat absorption main peak vertex of wax phase change, said low temperature environment is 0.8～1.5 times of the pairing temperature of heat absorption main peak vertex of wax phase change.
7. the preparation method who gathers materials by claim 4 or 6 described rice hull ash-wax phase change; It is characterized in that said hot environment is 2.5 times of the pairing temperature of heat absorption main peak vertex of wax phase change, said low temperature environment is 1.2 times of the pairing temperature of heat absorption main peak vertex of wax phase change.
8. the preparation method who gathers materials by the described rice hull ash-wax phase change of claim 4; It is characterized in that making mineral powder to be bonded in the particulate surface and be achieved in that two parts quality such as said mineral powder are divided into; Getting a copy of it mineral powder mixes with the particle of paraffin with rice hull ash; Place 0.9 times environment of the pairing temperature of heat absorption main peak vertex of wax phase change to be incubated 20 minutes; Take out, again with another part mineral powder thorough mixing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110127668A CN102303958A (en) | 2011-05-17 | 2011-05-17 | Rice hull ash-paraffin wax phase-change aggregate and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110127668A CN102303958A (en) | 2011-05-17 | 2011-05-17 | Rice hull ash-paraffin wax phase-change aggregate and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102303958A true CN102303958A (en) | 2012-01-04 |
Family
ID=45377902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110127668A Pending CN102303958A (en) | 2011-05-17 | 2011-05-17 | Rice hull ash-paraffin wax phase-change aggregate and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102303958A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104496544A (en) * | 2014-12-30 | 2015-04-08 | 深圳大学 | Phase change energy storage ceramsite and preparation method thereof |
| CN104844037A (en) * | 2015-03-27 | 2015-08-19 | 重庆交通大学 | Anti-expansion additive for resisting differential temperature stress in concrete box structure |
| CN105541151A (en) * | 2015-12-16 | 2016-05-04 | 河南理工大学 | Paraffin modified ultrafine mineral admixture and preparation method thereof |
| CN107935428A (en) * | 2017-11-30 | 2018-04-20 | 天津大学 | It is a kind of to improve the method that rubber grain floats in Latex cement sill |
| CN110894378A (en) * | 2019-10-30 | 2020-03-20 | 安徽康宁油脂科技有限公司 | Preparation method of yellowing-resistant industrial glycerol |
| CN111393096A (en) * | 2019-08-12 | 2020-07-10 | 华北理工大学 | Core-shell type light heat-insulating material and preparation method and application thereof |
| CN112723784A (en) * | 2021-01-07 | 2021-04-30 | 中建西部建设建材科学研究院有限公司 | Coal gangue phase change aggregate and preparation method thereof |
| CN113979695A (en) * | 2021-11-24 | 2022-01-28 | 许华 | Heat-storage temperature-regulating concrete and preparation method thereof |
| CN114620976A (en) * | 2022-03-14 | 2022-06-14 | 山东建筑大学 | Phase-change temperature-control controllable low-strength material for heat supply pipeline backfilling and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1450141A (en) * | 2003-04-10 | 2003-10-22 | 同济大学 | Phase-changing energy-storage composite material for building and preparation process thereof |
| CN201165723Y (en) * | 2008-02-03 | 2008-12-17 | 陈亚光 | Phase-change energy storage composite self-heat preserving building blocks |
| CN101481237A (en) * | 2009-01-06 | 2009-07-15 | 西北农林科技大学 | Preparation of phase change heat storing heat preserving porous building block |
| CN101709215A (en) * | 2009-08-11 | 2010-05-19 | 张世忠 | Rice husk ash phase-change energy-storing thermal insulation material |
| WO2011000688A1 (en) * | 2009-07-01 | 2011-01-06 | Basf Se | Particulate composition |
-
2011
- 2011-05-17 CN CN201110127668A patent/CN102303958A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1450141A (en) * | 2003-04-10 | 2003-10-22 | 同济大学 | Phase-changing energy-storage composite material for building and preparation process thereof |
| CN201165723Y (en) * | 2008-02-03 | 2008-12-17 | 陈亚光 | Phase-change energy storage composite self-heat preserving building blocks |
| CN101481237A (en) * | 2009-01-06 | 2009-07-15 | 西北农林科技大学 | Preparation of phase change heat storing heat preserving porous building block |
| WO2011000688A1 (en) * | 2009-07-01 | 2011-01-06 | Basf Se | Particulate composition |
| CN101709215A (en) * | 2009-08-11 | 2010-05-19 | 张世忠 | Rice husk ash phase-change energy-storing thermal insulation material |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104496544A (en) * | 2014-12-30 | 2015-04-08 | 深圳大学 | Phase change energy storage ceramsite and preparation method thereof |
| CN104844037A (en) * | 2015-03-27 | 2015-08-19 | 重庆交通大学 | Anti-expansion additive for resisting differential temperature stress in concrete box structure |
| CN105541151A (en) * | 2015-12-16 | 2016-05-04 | 河南理工大学 | Paraffin modified ultrafine mineral admixture and preparation method thereof |
| CN105541151B (en) * | 2015-12-16 | 2017-11-07 | 河南理工大学 | A kind of paraffin modification microfine mineral admixture and preparation method thereof |
| CN107935428A (en) * | 2017-11-30 | 2018-04-20 | 天津大学 | It is a kind of to improve the method that rubber grain floats in Latex cement sill |
| CN111393096A (en) * | 2019-08-12 | 2020-07-10 | 华北理工大学 | Core-shell type light heat-insulating material and preparation method and application thereof |
| CN110894378A (en) * | 2019-10-30 | 2020-03-20 | 安徽康宁油脂科技有限公司 | Preparation method of yellowing-resistant industrial glycerol |
| CN110894378B (en) * | 2019-10-30 | 2021-11-12 | 安徽康宁油脂科技有限公司 | Preparation method of yellowing-resistant industrial glycerol |
| CN112723784A (en) * | 2021-01-07 | 2021-04-30 | 中建西部建设建材科学研究院有限公司 | Coal gangue phase change aggregate and preparation method thereof |
| CN113979695A (en) * | 2021-11-24 | 2022-01-28 | 许华 | Heat-storage temperature-regulating concrete and preparation method thereof |
| CN114620976A (en) * | 2022-03-14 | 2022-06-14 | 山东建筑大学 | Phase-change temperature-control controllable low-strength material for heat supply pipeline backfilling and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102303958A (en) | Rice hull ash-paraffin wax phase-change aggregate and preparation method thereof | |
| CN102815965B (en) | Porous ceramsite made of low-silicon iron tailings and preparation method of porous ceramsite | |
| CN100408506C (en) | Method for producing high strenght flyash ceramic sand | |
| CN101935221A (en) | Low apparent porosity corundum refractory castable | |
| CN104909799A (en) | Lightweight high-strength ceramsite and preparation method thereof | |
| CN103586426A (en) | Thermal-insulation cover agent and preparation method thereof | |
| CN102557681A (en) | Micro-expansion self-levelling castable | |
| CN105016671B (en) | A kind of superfluidity self-compacting concrete and preparation method thereof | |
| CN101555146B (en) | Refractory castable composition with heat insulation and wear resistance and application thereof | |
| CN106673677A (en) | Environment-friendly anhydrous stemming for submerged arc furnace and preparation method | |
| CN110078431A (en) | Anti- isolation high-strength heat-insulating concrete of one kind and preparation method thereof | |
| CN112079643A (en) | Refractory castable for coal-fired boiler and preparation method thereof | |
| Zhou et al. | Investigation on the applicability of bauxite tailings as fine aggregate to prepare 3D printing mortar | |
| CN104193371B (en) | A kind of kilneye castable and preparation method thereof | |
| CN111960752A (en) | Phase-change heat storage wall material for building maintenance and preparation method thereof | |
| CN102296145B (en) | New application of fungus residue and heat-insulating covering agent for metallurgical industry | |
| CN103232213A (en) | Phase-change energy-storage gypsum board improving energy-saving efficiency, and preparation method thereof | |
| CN1686904A (en) | Composite heat insulating material of vermiculite and method of application thereof | |
| Erdogmus et al. | Thermal performance analysis of novel foam concrete composites with PCM for energy storage and environmental benefits in buildings | |
| CN103922786B (en) | Foamed ceramic material for external wall insulation | |
| CN106673672A (en) | Composition for preparing molten aluminum runner, molten aluminum runner and preparation method of molten aluminum runner | |
| CN102815956A (en) | Wear-resistant coating mixture for waste heat power generation pipelines | |
| CN110922164B (en) | Preparation method of forsterite type complex phase heat insulation material | |
| CN103979787A (en) | Method for preparing mineral wool by using high-calcium coal ash | |
| Wang et al. | Synthesis and characterization of Capric acid-Lauric acid/expanded vermiculite as a phase change composite for thermal energy storage |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120104 |