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Phase changing automatic temperature regulating unit composition and its preparing method and use

A composition and self-adjusting technology, applied in chemical instruments and methods, heat exchange materials, etc., can solve the problems of heat storage, low release capacity, low content of functional substances, and insignificant temperature adjustment effect, and achieve direct use methods. and simple, functional and long-lasting results

Inactive Publication Date: 2005-09-07
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The method does not limit the type of organic phase change material, and the effective content of the phase change material is less than 25% (weight ratio), the heat storage and release capacity is low, and the temperature adjustment effect is not obvious; in addition, the method uses layered silicic acid Salt is the carrier, and the carrier needs to be modified with quaternary ammonium salt. In the subsequent process, it must be washed with distilled water, then suction filtered and vacuum-dried. Therefore, this method also has a lot of equipment, complicated process, high production cost and low efficiency. The content of functional substances is low, and the self-regulating effect is not obvious

Method used

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  • Phase changing automatic temperature regulating unit composition and its preparing method and use
  • Phase changing automatic temperature regulating unit composition and its preparing method and use
  • Phase changing automatic temperature regulating unit composition and its preparing method and use

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preparation example Construction

[0021] The further feature of the preparation method of the phase-change self-temperature-regulating unit composition of the present invention is that during the heating and stirring of the organic solution and the drying of the composite slurry to a constant weight, the industrial condensation method is adopted to make the volatilized Organic solvent recovery, recycling, to achieve zero emissions. This design is not only beneficial to environmental protection, but also saves production costs. The industrial condensation method refers to a known industrial condensation method for cooling and condensing volatilized organic solvent gas into a liquid.

[0022] The use of the phase-change self-regulating unit composition of the present invention is characterized in that the self-regulating unit composition is added to lime slurry, cement slurry or concrete slurry in a proportion of 6 to 50% by weight to produce a Lime products and cement products with self-regulating function, or...

Embodiment 1

[0025] 44g dodecyl alcohol is dissolved in 506g dehydrated alcohol, is made into the phase-change material ethanol solution that concentration is 8%, is heated to 35 ℃, stirs for 30 minutes; Stir at ℃ for 8 hours to obtain a composite slurry containing sepiolite, dodecanol, and ethanol; dry the prepared composite slurry at 60°C to constant weight; grind the dried blank to an average particle diameter of 45 Below microns, 153.5 g of the phase change self-regulating unit composition is obtained.

[0026] The self-regulating unit composition (referring to figure 2 , observed under a microscope is mainly fibrous structure, the same below) containing 28.7% of the phase-change temperature-regulating working fluid material, and the rest is inorganic non-metallic mineral material sepiolite. Tests show that the composition has high temperature regulation efficiency, the phase change working medium material does not seep out, and the use performance is stable.

Embodiment 2

[0028] 45g dodecanol is dissolved in 255g dehydrated alcohol, is made into the phase change material ethanol solution that concentration is 15%, is heated to 35 ℃, stirs for 30 minutes; Stir at 40°C for 8 hours to obtain a composite slurry containing sepiolite, lauryl alcohol, and ethanol; dry the prepared composite slurry at 60°C to constant weight; crush the dried blank to an average particle size of Below 45 microns, 112.1 g of a phase-change self-regulating unit composition is obtained.

[0029] The self-regulating unit composition (referring to image 3 ) contains 39.7% of the phase-change temperature-regulating working fluid material, and the rest is sepiolite, an inorganic non-metallic mineral material. After testing, the latent heat of phase change of the composition can reach 73.93 joules / gram (the curve chart of the differential calorimetry scanning analysis results can be found in Figure 5 ), has a high self-regulating temperature capability, the phase change wor...

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Abstract

The phase change composition consists of organic phase change material in 25-70 wt% and inorganic non-metal mineral material in 30-75 wt%. The organic phase change material is one or several kinds of C12-C14 organic alcohol, and the inorganic non-metal mineral material is one or several kinds of sepiolite, palygorskite and attapulgite with nano pore canal structure capable of adsorbing organic matter effectively. During the preparation of the composition, the organic phase change material is first dissolved in organic solvent to prepare organic solution of 8-50 % concentration; the inorganic non-metal mineral material is then added under 30-60 deg.c and stirring to obtain composite slurry; and the slurry is stoved at 60-80 deg.c and crushed to below 45 microns to obtain the composition. The composition is added into lime slurry, cement mortar or concrete mortar to produce building material with automatic temperature regulating function or used as surface material for building.

Description

technical field [0001] The invention relates to a new type of building material technology, specifically a phase-change self-regulating temperature unit composition and its preparation method and application. The international patent main classification number is proposed to be Int.C1 7 .C09K5 / 00. Background technique [0002] Self-regulating building material is a new type of building material. It has the characteristics of automatically adjusting the indoor temperature according to the change of the ambient temperature and improving the indoor comfort. Therefore, the use of self-temperature-adjusting building materials can reduce the use time of air conditioners and heaters and the number of times the air conditioners are turned on, and also help them avoid peak power consumption and shift the power consumption time, so as to achieve the purpose of saving energy and reducing consumption. Phase-change temperature-regulating working medium material is the main material of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K5/02
Inventor 梁金生梁广川吴子钊梁秀红任宝山
Owner HEBEI UNIV OF TECH