A kind of exterior wall thermal insulation material containing seven aluminum twelve calcium and its preparation method and application

A technology of seven aluminum, twelve calcium, and external wall thermal insulation. It can be used in applications, other household appliances, ceramic products, etc., to solve the problems of high cost and immature dispersion technology, and to save raw material costs, reduce costs, and improve strength. and fire performance

Active Publication Date: 2021-03-09
北京新时代寰宇科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, due to the high cost and immature dispersion technology and other conditions, the application of liquid alkali-free accelerator still has a long way to go

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Prepare insulation material product 1 by following method

[0040] 1) 20 parts by weight of heptaaluminum dodecacalcium powder, 4 parts by weight of flame retardant, and 4 parts by weight of water reducer are mixed in proportion to obtain composite powder A;

[0041] 2) Add 28 parts by weight of composite powder A, 40 parts by weight of #42.5 ordinary Portland cement, 30 parts by weight of fly ash, and 5 parts by weight of composite fiber into a mixer and stir to obtain composite dry powder B;

[0042] 3) Add the pre-prepared foam to the composite dry powder B for foaming to obtain foamed cement. The pre-fabricated foam is prepared by mixing 10 parts by weight of foaming agent and water in a foaming machine at a ratio of 1:20;

[0043] 4) Finally, 7 parts by weight of polyphenylene particles, 7 parts by weight of redispersible rubber powder, and 1 part by weight of hydroxypropyl methylcellulose were added and stirred thoroughly, and then the insulation material product ...

Embodiment 2

[0045] Prepare insulation material product 2 by following method

[0046] 1) 5 parts by weight of heptaaluminum dodecacalcium powder, 2 parts by weight of flame retardant, and 1 part by weight of water reducer are mixed in proportion to obtain composite powder A;

[0047] 2) Add 8 parts by weight of composite powder A, 60 parts by weight of #42.5 ordinary Portland cement, 10 parts by weight of fly ash, and 1 part by weight of composite fiber into a mixer and stir to obtain composite dry powder B;

[0048] 3) Add the pre-prepared foam to the composite dry powder B for foaming to obtain foamed cement. The pre-fabricated foam is prepared by mixing 1 part by weight of foaming agent and water in a foaming machine at a ratio of 1:20;

[0049] 4) Finally, 20 parts by weight of polyphenylene particles, 2 parts by weight of redispersible rubber powder, and 5 parts by weight of hydroxypropyl methylcellulose were added and stirred thoroughly, and then the insulation material product 2 wa...

Embodiment 3

[0051] Preparation of thermal insulation material product 3 by the following method

[0052] 1) 15 parts by weight of heptaaluminum dodecacalcium powder, 1 part by weight of a flame retardant, and 4 parts by weight of a water reducer are mixed in proportion to obtain a composite powder A;

[0053] 2) Add 20 parts by weight of composite powder A, 60 parts by weight of #42.5 ordinary Portland cement, 30 parts by weight of fly ash, and 4 parts by weight of composite fiber into a mixer and stir to obtain composite dry powder B;

[0054] 3) Add the pre-prepared foam to the composite dry powder material B for foaming to obtain foamed cement. The pre-fabricated foam is prepared by mixing 3 parts by weight of foaming agent and water in a foaming machine at a ratio of 1:20;

[0055] 4) Finally, 15 parts by weight of polyphenylene particles, 7 parts by weight of redispersible rubber powder, and 6 parts by weight of hydroxypropyl methylcellulose were added and stirred thoroughly, and the...

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Abstract

The invention discloses an exterior wall thermal insulation material containing heptaaluminum and dodecacalcium, a preparation method and application thereof, and belongs to the field of building materials. The external wall insulation material includes the following raw materials by weight: 8-28 parts of composite powder A, 40-60 parts of cement, 10-30 parts of fly ash, 7-20 parts of lightweight aggregate, 1-10 parts of foaming agent, 2-7 parts of redispersed rubber powder, 0-6 parts of water-retaining agent, and 1-5 parts of composite fiber; wherein, the composite powder A includes 5-20 parts by weight of heptaaluminum dodecacalcium powder, and 1-4 parts of flame retardant and 1‑4 parts of water reducer. The present invention uses heptaaluminum dodecacalcium as the quick-setting agent to increase the early strength and increase the later strength, supplemented by composite fibers, which can greatly enhance the compression and crack resistance, and the finished material prepared by the present invention basically meets the performance index of the external wall insulation material, and Excellent crack resistance, compression resistance, and durability, meeting the requirements of relevant national standards, and can be used as external wall insulation materials.

Description

technical field [0001] The invention relates to the field of building materials, in particular to an exterior wall insulation material containing heptaaluminum and dodecacalcium, a preparation method and application thereof. Background technique [0002] The molecular formula of heptaaluminum (acid) dodecacalcium is 12CaO·7Al 2 o 3 , abbreviated as C 12 A 7 , the crystal form is a cubic crystal system, the coordination number is 2, and its single crystal molecular structure can be simply described as a basic framework composed of 12 cage cavities and free oxygen ions (O 2- )composition. [0003] Heptaaluminum dodecacalcium material is a series of heptaaluminum dodecacalcium as the basic unit, and has C 12 A 7 Substances with unique structures are mainly prepared by high-temperature sintering, wet chemical, sol-gel self-propagating combustion, crystallization, and laser pulse deposition. Because of this cage structure, it has unique properties such as conductivity, oxi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04C04B38/10C04B111/40
CPCC04B28/04C04B38/10C04B2111/00017C04B2111/40C04B2201/20C04B2201/32C04B2201/50C04B18/08C04B2103/12C04B2103/0057C04B2103/465C04B2103/302C04B2103/63C04B16/08C04B14/383C04B16/0633C04B14/4656
Inventor 田俊岭杨李宁胡宝苓张迎新
Owner 北京新时代寰宇科技发展有限公司
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