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A functional material with latent heat regulation and passive humidity regulation, its preparation method and application

A functional material and mild technology, applied in the field of building materials, can solve the problems of inability to achieve temperature regulation at the same time, lack of complementary materials with different pore sizes, and limited range of humidity regulation, so as to enhance heat storage capacity and heat capacity, and widen humidity regulation. Range, thermal conductivity reduction effect

Active Publication Date: 2019-05-07
NANJING UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Chinese patent 201410315121.5 discloses a biomass porous phase change temperature and humidity control material and its preparation method, wherein the part that plays the role of humidity control is physically activated walnut shell and building gypsum gelling material, the pore size of this material is single, Lack of complementarity between materials with different pore sizes, so the range of indoor relative humidity adjustment is limited
The invention patent of Chinese patent 201310184849.4 discloses an environmentally friendly passive temperature and humidity control material and its preparation method, in which the temperature control part only depends on the heat capacity of the material itself, which has poor heat storage capacity and weak temperature adjustment capacity
Chinese patent 201110445847.7 discloses a material capable of passively adjusting indoor relative humidity and its preparation method and application, using renewable resources such as wood powder and industrial solid waste fly ash to improve the humidity control ability of diatomite-based humidity control materials, but the The method can only adjust the humidity, but cannot adjust the temperature at the same time

Method used

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  • A functional material with latent heat regulation and passive humidity regulation, its preparation method and application
  • A functional material with latent heat regulation and passive humidity regulation, its preparation method and application
  • A functional material with latent heat regulation and passive humidity regulation, its preparation method and application

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preparation example Construction

[0047] The preparation method of the above-mentioned functional material with latent heat regulation and passive humidity regulation, the specific steps are as follows:

[0048] Step 1, pretreatment of diatomite: refer to the method disclosed in Chinese patent 201110445847.7 to pretreat diatomite, that is, calcining diatomite at a high temperature of 500-800°C for 1-8 hours;

[0049] Step 2, preparation of composite phase-change capsules: the solid paraffin and liquid paraffin are prepared in a ratio of 5 to 8 parts by mass: 3 parts to prepare a binary mixture, and the binary mixture and expanded graphite are in a mass ratio of 100 parts: 1 to 4 parts Mix the ratio of the composite phase change core material with a phase change temperature of 22-29°C. After the composite phase change core material is solidified into solid particles, stir the solid particles and water-based epoxy resin at a mass ratio of 5:1 , so that the epoxy resin is fully coated on the surface of the solid ...

Embodiment 1

[0052] A functional material with latent heat regulation and passive humidity regulation, wherein the mass ratio of each component is: 30 parts of 32.5 type cement, 15 parts of calcined diatomite, 5 parts of poplar wood powder, and 15 parts of pulverized coal Ash, 10 parts of composite phase change capsules, 15 parts of light sludge ceramsite, 5 parts of corn starch glue stabilizer, 2 parts of nano-titanium dioxide antibacterial agent, 2 parts of OBPA antifungal agent antifungal agent, 130 parts water.

[0053] A method for preparing a functional material with latent heat regulation and passive humidity regulation, the specific steps are:

[0054] Step 1, pretreatment of diatomite: calcining diatomite at a high temperature of 500° C. for 3 hours;

[0055] Step 2, preparation of composite phase change capsules: prepare a binary mixture with solid paraffin and liquid paraffin at a mass ratio of 8:3, mix the binary mixture with expanded graphite at a mass ratio of 100:4, and pre...

Embodiment 2

[0061] A functional material with latent heat regulation and passive humidity regulation, wherein the mass ratio of each component is: 25 parts of 32.5 type cement, 20 parts of calcined diatomite, 5 parts of poplar wood powder, and 17 parts of pulverized coal Ash, 18 parts of composite phase change capsules, 15 parts of light sludge ceramsite, 4 parts of corn starch glue stabilizer, 3 parts of nano-titanium dioxide antibacterial agent, 3 parts of OBPA antifungal agent antifungal agent, 140 parts water.

[0062] The preparation method of the functional material with latent heat regulation and passive humidity regulation in this example is different from Example 1 in that: solid paraffin and liquid paraffin are prepared in a ratio of 6.5:3 by mass to a binary mixture, and the binary mixture and the expansion Graphite was mixed at a mass ratio of 100:3, and the phase transition temperature of the prepared composite phase change core material was 24.1-28°C, and the others were the...

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Abstract

The invention discloses a functional material with latent heat tempering and passive humidifying functions and a preparation method and application of the functional material. The functional material is prepared from, by weight, 15-30 parts of cement, 20-40 parts of a humidifying agent, 15-20 parts of pulverized fuel ash, 10-20 parts of compound phase-change capsules, 5-15 parts of lightweight ceramsite, 2-5 parts of a corn starch glue stabilizer, 2-5 parts of an antibacterial agent, 2-5 parts of a mildew preventive and 130-160 parts of water. Renewable resources of wood meal and corn starch glue and environment-friendly phase transition temperature-regulating materials of the pulverized fuel ash and the lightweight ceramsite of industrial solid wastes are utilized, raw materials are easy to obtain, cost is low, production and construction process is simple, tempering and humidifying effect is good, energy consumable type active tempering mode can be changed into resource saving type passive tempering mode, and the functional material is applicable to the field of indoor tempering and humidifying.

Description

technical field [0001] The invention relates to a functional intelligent and environment-friendly building material with latent heat temperature regulation and passive humidity regulation, belonging to the field of passive indoor temperature and humidity regulation. Background technique [0002] Appropriate indoor temperature and humidity are crucial to the living environment of human beings and the preservation of objects. In order to control the temperature and humidity of the indoor environment to meet the requirements of human comfort or production technology, traditional methods usually adopt methods such as heating, air conditioning, ventilation, condensation dehumidification, rotary dehumidification, and humidifier humidification to actively adjust indoor temperature and humidity. Although the above methods are efficient, they may bring a series of disadvantages, such as noise pollution during mechanical operation, bacterial growth in the water system causing "indoor ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04C04B38/08
CPCC04B28/04C04B38/08C04B14/08C04B18/265C04B18/08C04B18/023C04B24/38C04B22/06C04B2103/67C04B14/024C04B24/08
Inventor 郑佳宜王晟琪余延顺
Owner NANJING UNIV OF SCI & TECH
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