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Preparation method of inorganic modified polystyrene insulation board

A polystyrene and inorganic modification technology, applied in the field of building energy saving, can solve the problems of not meeting the A-level standard, difficult construction, high thermal conductivity, and achieve the effect of good fire resistance

Active Publication Date: 2015-10-07
宁夏保利节能科技有限公司
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Problems solved by technology

[0002] At present, the mainstream polystyrene modification technology is the technology of fire isolation and sub-compartment, that is, the technology used in real gold boards. However, the materials used in this product are all organic materials, and the fire performance can only reach B1 level, which cannot meet the national requirements. Class A standard; the other is a mold-molded modified insulation board. Polystyrene particles are added to the inorganic material to achieve the effect of fire prevention and heat preservation. Although this product has excellent fire resistance, it has a high thermal conductivity. Heavy weight, not easy to construct

Method used

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  • Preparation method of inorganic modified polystyrene insulation board

Examples

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preparation example Construction

[0014] see figure 1 , the preparation method of inorganic modified polystyrene insulation board, comprises the following steps:

[0015] (1) Preparation of magnesite cement slurry: add 60-100 parts of magnesium chloride heptahydrate to 100 parts of water and stir until magnesium chloride heptahydrate is completely dissolved, then add 2-20 parts of styrene-acrylic emulsion and 0.5-1 part of hydroxypropyl methyl , 1-12 parts of gypsum powder, 1-10 parts of anti-halogenation agent, since magnesium oxychloride cement is easy to absorb moisture and return to halogenation, adding anti-halogenation agent can inhibit or even avoid the occurrence of halogenation, and finally add magnesium oxide 60-120 parts, and stir evenly to obtain magnesite cement slurry. Magnesium chloride heptahydrate and magnesium oxide are added to the water to react to form magnesium oxychloride cement stone with high strength and excellent fire resistance. The prepared magnesite cement slurry should not be u...

Embodiment

[0020] Dissolve 80kg of magnesium chloride heptahydrate in 100kg of water, then add 2kg of styrene-acrylic emulsion, 0.5kg of hydroxypropyl methylcellulose, 1kg of gypsum powder, and 1kg of anti-reflux agent, mix and stir, and finally add 80kg of magnesium oxide, and stir evenly to obtain Magnesite cement paste.

[0021] Adjust the steam pressure of the pre-foaming machine to 2.5MPa, and the pressurization time to 4s, so that the bulk density of the foamed polystyrene sheet is 14kg / m 3 .

[0022] Turn on the vacuum filter and infiltrate the foamed board through the vacuum filter. After the infiltration, put the board in a constant temperature curing room at 25°C for 8 hours, and maintain it under the condition of satisfying its own hydration heat and dehumidification 5 days to get the finished product.

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Abstract

The invention relates to a preparation method of an inorganic modified polystyrene insulation board. In the preparation method, magnesia cement slurry is modified by raw materials such as halogenide-resistant agent, gypsum powder, styrene-acrylic emulsion, hydroxypropyl methyl cellulose and the like, the defects of the magnesia cement are overcome, the intermiscibility with the polystyrene can be improved, when in osmosis of a vacuum suction filter, the modified magnesia cement slurry is uniformly permeated into the polystyrene insulation board by utilizing negative p ressure, then the magnesia cement slurry is sent to a maintaining room to be maintained at the temperature of 20 to 25 DEG C, magnesite cement uniformly fills polystyrene particles and is tightly combined with the polystyrene particles, and the magnesite cement is good in fire resistance, so that the polystyrene insulation board can reach a grade-A fire-resisting requirement.

Description

technical field [0001] The invention relates to the technical field of building energy conservation, in particular to a preparation method of an inorganic modified polystyrene insulation board. Background technique [0002] At present, the mainstream polystyrene modification technology is the technology of fire isolation and sub-compartment, which is the technology used in real gold boards. However, the materials used in this product are all organic materials, and the fire performance can only reach B1 level, which cannot meet the national requirements. Class A standard; the other is a mold-molded modified insulation board. Polystyrene particles are added to the inorganic material to achieve the effect of fire prevention and heat preservation. Although this product has excellent fire resistance, it has a high thermal conductivity. Heavy weight, not easy to construct. Contents of the invention [0003] It is necessary to propose a method for preparing an inorganic modified...

Claims

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Application Information

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IPC IPC(8): C04B28/32
Inventor 辛守银郝松
Owner 宁夏保利节能科技有限公司
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