Inorganic calcium sulfate whisker heat retaining panel and preparation method thereof

A technology of calcium sulfate whisker and thermal insulation board is applied in the field of building material manufacturing, which can solve the problems of high water absorption, poor machining performance, flammability, etc., and achieve the effects of low dry density, low construction cost, and overcoming flammability.

Active Publication Date: 2014-01-22
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional thermal insulation materials are mainly organic thermal insulation materials, which have a good thermal insulation effect, but have the problem of flammability; Gongxiao [2011] No. 65 clearly requires that "the external thermal insulation materials of civil buildings adopt materials with a combustion performance of Class A"
Inorganic thermal insulation materials have the advantages of good fire resistance, high strength, and no thermal aging problems, but their high water absorption and poor machining performance affect their popularization and application

Method used

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  • Inorganic calcium sulfate whisker heat retaining panel and preparation method thereof
  • Inorganic calcium sulfate whisker heat retaining panel and preparation method thereof
  • Inorganic calcium sulfate whisker heat retaining panel and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment 1: the preparation method of the inorganic calcium sulfate whisker insulation board that the present embodiment provides, it comprises the steps:

[0028] (1) Prepare raw materials: each component of the raw material and its weight percentage are as follows:

[0029]

[0030] (2) Take by weighing 900g of calcium sulfate whiskers, 20g of ordinary cement, and 10g of silica fume, put them into a mixing tank, stir and mix evenly, and obtain a dry mix;

[0031] (3) Weigh 100g waterproofing agent and add it to 970g water, stir and mix evenly, join in the above-mentioned dry mix, continue to stir evenly, obtain slurry;

[0032] (4) Pour the slurry into a mold of 90cm * 90cm * 10cm, leave it at room temperature for molding, and demould to obtain a wet billet;

[0033] (5) The wet billet was dried in a blast drying oven at 100°C for 20 hours, calcined at 250°C for 2 hours and at 500°C for 2 hours in a program-controlled high-temperature calciner to obtain an inorg...

Embodiment 2

[0036] The inorganic calcium sulfate whisker insulation board provided in this embodiment and its preparation method are basically the same as in Example 1, except that:

[0037] A kind of preparation method of inorganic calcium sulfate whisker insulation board, it comprises the steps:

[0038] (1) Prepare raw materials: each component of the raw material and its weight percentage are as follows:

[0039]

[0040] (2) Take by weighing 1000g of calcium sulfate whiskers, 10g of ordinary cement, and 10g of silica fume, put them into a mixing tank, stir and mix evenly, and obtain a dry mix;

[0041] (3) Weigh 80g waterproofing agent and add it to 900g water, stir and mix evenly, join in the above-mentioned dry mix, continue to stir evenly, obtain slurry;

[0042] (4) Pour the slurry into a mold of 90cm * 90cm * 10cm, leave it at room temperature for molding, and demould to obtain a wet billet;

[0043] (5) The wet billet was dried in a blast drying oven at 100°C for 15 hours,...

Embodiment 3

[0046] The inorganic calcium sulfate whisker insulation board provided in this embodiment and its preparation method are basically the same as those in Embodiments 1 and 2, except that:

[0047] A kind of preparation method of inorganic calcium sulfate whisker insulation board, it comprises the steps:

[0048] (1) Prepare raw materials: each component of the raw material and its weight percentage are as follows:

[0049]

[0050] (2) Take by weighing 800g of calcium sulfate whiskers, 200g of ordinary cement, and 100g of silica fume, put them into a mixing tank, stir and mix evenly, and obtain a dry mix;

[0051] (3) Take 60g waterproofing agent and join in 840g water, stir and mix evenly, join in the above-mentioned dry mix, continue to stir evenly, obtain slurry;

[0052] (4) Pour the slurry into a mold of 90cm * 90cm * 10cm, leave it at room temperature for molding, and demould to obtain a wet billet;

[0053] (5) The wet billet was dried in a blast drying oven at 110°C...

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Abstract

The invention discloses an inorganic calcium sulfate whisker heat retaining panel. The inorganic calcium sulfate whisker heat retaining panel is characterized by being prepared from the following raw materials in percentage by weight: 30-50% of calcium sulfate whisker, 0.1-10% of Portland cement, 0.1-10% of silica fume, 2-5% of water-proofing agent and 30-50% of water. The invention also discloses a preparation method of the inorganic calcium sulfate whisker heat retaining panel. The inorganic calcium sulfate whisker heat retaining panel provided by the invention has the advantages of Al-grade fireproofing, light weight, high strength, excellent waterproof property, low heat conductivity coefficient and the like and is a high-quality heat retaining panel for building external walls, which has practical application value. According to the preparation method, a one-step molding method is adopted, and the technological processes comprise dry material premixing, liquid material premixing, pulping, standing still, molding, demolding, drying, high-temperature thermal treatment and the like.

Description

technical field [0001] The invention relates to the technical field of building material manufacturing, in particular to an inorganic calcium sulfate whisker insulation board for building and a preparation method thereof. Background technique [0002] As a big country in construction, my country's building energy consumption accounts for about 27% of the country's total energy consumption, but the level of building energy conservation is far lower than that of developed countries in the world, and the unit building energy consumption is 3-5 times that of developed countries with similar climates. The development of new building energy-saving and environmentally friendly materials has important practical significance for improving resource utilization, improving the environment, saving energy and reducing emissions. Building insulation boards are mainly used in building walls, roofs, windows, floors and other parts to play a role in heat insulation and are important indicator...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B14/38
Inventor 施利毅曹绍梅冯欣王钢领孟祥浩
Owner SHANGHAI UNIV
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