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A kind of gypsum slag foamed cement insulation board and its preparation process

A foam insulation board and slag cement technology, which is applied in cement production, ceramic products, and other household appliances, can solve problems such as poor water resistance, and achieve the effects of simple process, good economic and environmental benefits, and low production cost

Active Publication Date: 2017-12-19
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, the existing desulfurized gypsum boards, blocks and other products have the obvious disadvantage of poor water resistance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A foam insulation board with gypsum slag cement as the main cementitious material. The raw materials include the following components in parts by weight: cement 2800, fly ash 1200, water 2080, calcium stearate 60, naphthalene-based water reducing Agent (powder) 10, hydrogen peroxide 208, polypropylene fiber 20; Wherein, hydrogen peroxide adopts the hydrogen peroxide that mass concentration is 30%, and its quality is H 2 o 2 The length of the polypropylene fiber is 5-20mm, the fly ash is Class I fly ash, and the water is tap water.

[0036] Among them, the raw material of cement is composed of the following components in mass percentage: 80% of slag, 15% of desulfurized gypsum, 3% of building gypsum, 1% of slaked lime, and 1% of limestone. Among them, the slag is S95 grade slag.

[0037]The preparation method is as follows: firstly, desulfurized gypsum is calcined at 700°C for one hour, and then ground for 35 minutes with a ball mill for later use (calcining gypsum to ...

Embodiment 2

[0041] A foam insulation board with gypsum slag cement as the main cementitious material. The raw materials include the following components in parts by weight: cement 3200, fly ash 800, water 2080, calcium stearate 60, polycarboxylate Aqua (liquid) 10, hydrogen peroxide 208, polypropylene fiber 20; Wherein, hydrogen peroxide adopts the hydrogen peroxide that mass concentration is 40%, and its quality is H 2 o 2 Calculated, the length of polypropylene fiber is 5-20mm, the fly ash is Class II fly ash, and the water is tap water.

[0042] Wherein, the raw material of cement is composed of the following components in mass percentage: 90% of slag and 10% of desulfurized gypsum. Among them, the slag is S105 grade mineral powder.

[0043] Its preparation method is as follows: firstly, desulfurized gypsum is calcined at 700°C for one hour, then ground by a ball mill for 35 minutes and then used for later use (calcining gypsum to improve the early strength of cement); grinding desul...

Embodiment 3

[0047] A foam insulation board with gypsum slag cement as the main cementitious material. The raw materials include the following components in parts by weight: cement 2400, fly ash 140, water 1600, calcium stearate 40, hydrogen peroxide 300 , glass fiber 30; Wherein, hydrogen peroxide adopts the hydrogen peroxide that mass concentration is 35%, and its quality is represented by H 2 o 2 Calculated, the length of the glass fiber is 5-20mm, the fly ash is Class II fly ash, and the water is tap water.

[0048] Among them, the raw material of cement is composed of the following components in mass percentage: 85% of slag, 12% of desulfurized gypsum, 1% of building gypsum, 1% of slaked lime, and 1% of limestone. Among them, the slag is S95 mineral powder.

[0049] The preparation method is as follows: firstly, desulfurized gypsum is calcined at 700°C for one hour, and then ground for 35 minutes with a ball mill for later use (calcining gypsum to improve the early strength of cemen...

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Abstract

The invention discloses a supersulphated foamed cement and an insulation board thereof, and preparation methods. The cement comprises raw materials composed of the following components by mass: 80 to 90% of slag, 10 to 15% of desulphurized gypsum, 0 to 10% of building gypsum, 0 to 10% of slaked lime and 0 to 10% of limestone. The insulation board comprises raw materials composed of the following components by weight: 2400 to 4000 parts of the cement, 140 to 1200 parts of fly ash, 1600 to 2400 parts of water, 20 to 60 parts of a foam stabilizer, 0 to 10 parts of a water reducer, 100 to 300 parts of a foaming agent and 0 to 30 parts of fiber. The invention has the following advantages: resource utilization of the desulfurized gypsum is realized; a great amount of industrial wastes like the slag and the fly ash are utilized; meanwhile, production process is energy-saving and environment-friendly; thus, good economic and environmental benefits are obtained. Moreover, the foamed insulation board provided by the invention has the characteristics of light weight, heat insulation, flame retardance, sound insulation and absorption, etc, and is low in production cost and simple in process.

Description

technical field [0001] The invention belongs to the field of building energy-saving materials, in particular to a foamed cement insulation board with gypsum slag cement as the main gelling material and a preparation method thereof. Background technique [0002] In the proportion of major energy consumption, building energy consumption occupies a relatively high proportion. Therefore, energy-saving building materials are bound to become the development direction of new building materials in the future. The requirements are significant. In the external wall insulation system, the insulation materials commonly used before are organic polymer materials such as EPS and XPS. Although they have excellent thermal insulation performance, they have obvious disadvantages such as flammability, easy aging and falling off, and complicated maintenance and replacement. casualties and property damage. Another kind of granular rubber powder mortar made of porous light materials such as per...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B7/147C04B28/08C04B38/02
CPCY02P40/10
Inventor 潘钢华洪斌唐美玲潘文佳
Owner SOUTHEAST UNIV
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