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Paraffin microencapsulated phase-change thermal-storage mortar and preparation method thereof

A technology of paraffin microcapsules and phase change heat storage, which is applied in clay preparation devices, chemical instruments and methods, mixing operation control, etc., and can solve problems such as mortar cracking and loss of phase change materials

Inactive Publication Date: 2010-03-17
LOGISTICAL ENGINEERING UNIVERSITY OF PLA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The present invention aims at technical problems such as the loss of phase change material, the compatibility of paraffin microcapsules and inorganic gel materials, and the cracking of mortar caused by high content of paraffin microcapsules in the existing phase change heat storage and heat preservation mortar. Novel external wall thermal insulation material with phase change heat storage function and preparation method thereof

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Example 1: Paraffin microcapsule phase change heat storage and heat preservation mortar

[0025] (1) 2 kilograms of paraffin microcapsules are mixed with 200 g of silane coupling agent KH550, and 1300 ml of water are added, fully stirred to make the surface of paraffin microcapsules moist, then 192 g of binder ethylene-vinyl acetate copolymer emulsion is added, fully stirred, The surface-modified paraffin microcapsule premix is ​​obtained. The paraffin microcapsules are prepared using the following example 4, and other existing methods can also be used.

[0026] (2) Wet the mortar mixer, add 3kg of weighed cement and 7kg of fine sand (fineness modulus 1.6-2.2) into the mixer, add the modified paraffin microcapsule premix and early strength water reducer 120g, add 2500ml of water, and stir for 30 minutes.

[0027] (3) Add 15g of polypropylene fiber, stir for three minutes, and test the consistency and layering.

[0028] (4) Pour the prepared mortar mixture into molds ...

Embodiment 2

[0032] Example 2: Paraffin microcapsule phase change heat storage and heat preservation mortar

[0033] (1) 1.5 kilograms of paraffin microcapsules are mixed with 1000 g of silane coupling agent KH560, and 600 ml of water are added, and the surface of the paraffin microcapsules is moistened, then 192 g of binder ethylene-vinyl acetate copolymer emulsion is added, fully stirred, The surface-modified paraffin microcapsule premix is ​​obtained.

[0034] (2) Wet the mortar mixer, add 3kg of weighed cement and 7kg of fine sand (fineness modulus 1.6-2.2) into the mixer, add the modified paraffin microcapsule premix and early strength water reducer 120g, add 1100ml of water, and stir for 20 minutes.

[0035] (3) Add 15g of polypropylene fiber, stir for three minutes, and test the consistency and layering.

[0036] (4) Pour the prepared mortar mixture into molds of 40×40×160mm and 30×30×300mm respectively to prepare standard test blocks for performance testing, and perform standard ...

Embodiment 3

[0040] Example 3: Paraffin microcapsule phase change heat storage and heat preservation mortar

[0041] (1) 0.5 kg of paraffin microcapsules are mixed with 400g of silane coupling agent KH550, and 800ml of water is added, fully stirred to make the surface of paraffin microcapsules moist, then 192g of binder ethylene-vinyl acetate copolymer emulsion is added, fully stirred, The surface-modified paraffin microcapsule premix is ​​obtained.

[0042] (2) Wet the mortar mixer, add 3kg of weighed cement and 8.5kg of fine sand (fineness modulus 1.6-2.2) into the mixer, add the modified paraffin microcapsule premix and early strength water reducing Add 120g of the agent, add 1600ml of water, stir for 2 minutes.

[0043] (3) Add 15g of polypropylene fiber, stir for three minutes, and test the consistency and layering.

[0044] (4) Pour the prepared mortar mixture into molds of 40×40×160mm and 30×30×300mm respectively to prepare standard test blocks for performance testing, and perform...

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Abstract

The invention relates to a building energy-saving material based on the phase-change thermal-storage mechanism and a preparation method thereof. The preparation method comprises the steps of taking cement and other inorganic gel materials as a substrate, and doping a microencapsulated organic phase-change material-paraffin, thereby forming a novel external wall external thermal insulation materialwith the phase-change thermal-storage function. The preparation method adopts the microencapsulation technology for solving the loss and the out-leakage of the phase-change material and adopts the surface modification technology of a coupling agent and the polymer fiber toughness reinforcing technology, thereby solving the compatibility of paraffin microcapsules with the inorganic gel materials and the mortar cracking problem under high content of the paraffin microcapsules. The invention is mainly suitable for the field of energy-saving buildings with external wall external thermal insulation in the regions which are hot in summer and cold in winter and hot in summer and warm in winter in South China.

Description

technical field [0001] The invention relates to the technical field of building energy-saving materials, in particular to a phase-change thermal storage and thermal insulation mortar. Background technique [0002] Energy saving and emission reduction is the country's macro strategy, and building energy saving is becoming and will become a hot spot in my country's construction industry for a long time to come. Although the "Design Standards for Energy Conservation of Residential Buildings in Hot Summer and Cold Winter Areas" and "Design Standards for Energy Conservation of Residential Buildings in Hot Summer and Warm Winter Areas" have been promulgated, my country's building energy-saving industry is still very weak, and the development of new technologies for building energy-saving is imminent. The main measures for building energy conservation are currently concentrated on walls, roofs, doors and windows. Walls are the most important enclosure structure system that should a...

Claims

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Application Information

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IPC IPC(8): C04B28/00C09K5/06B28C7/04B28C5/40C04B14/06C04B16/06
CPCC04B2111/28C04B28/02
Inventor 晏华陈淑莲朱霞余荣升陈乔张亮
Owner LOGISTICAL ENGINEERING UNIVERSITY OF PLA
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