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Bicomponent magnesite material composite modifier and preparation method thereof

A composite modifier and magnesite material technology, applied in the field of two-component magnesite material composite modifier and its preparation

Active Publication Date: 2013-10-23
上海复培新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] my country has started to research and apply magnesite materials since the early 1950s, but due to its poor water resistance, defects such as returning brine and frosting, the strength of the product is reduced, and it is easy to warp Flexibility, which limits the application of magnesite materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Weigh and prepare component A and component B of the composite modifier for magnesite materials according to the prescribed ratio, and the dosage of each raw material is as follows:

[0031] A component: Phosphoric acid 17.5g; Sodium silicate 32.5g;

[0032] Component B: latex powder 10g; sepiolite fiber 12.5g;

[0033] Fly ash 15g; Sodium fluorosilicate 2g;

[0034] Sodium hexametaphosphate 3g; water retaining agent 7.5g.

[0035] After stirring evenly, the A and B components of the special composite modifier for magnesite materials are formed.

[0036] Embodiment is example with 1000g magnesium oxide.

[0037] The specific operation steps are as follows: Put 1000g of magnesium oxide and 50g of component B into the mixer for dry stirring for 3 minutes; add 800g of prepared brine (27°Bé) into the mixer and stir evenly; then add 50g of component A and continue stirring for 3-5 minutes. The stirred slurry is poured into a 40mm×40mm×160mm triple test film, and a total ...

Embodiment 2

[0041] Weigh and prepare component A and component B of the composite modifier for magnesite materials according to the prescribed ratio, and the dosage of each raw material is as follows:

[0042] A component: Phosphoric acid 22.5g; Sodium silicate 27.5g;

[0043] Component B: latex powder 12.5g; sepiolite fiber 10g;

[0044] Fly ash 17.5g; Sodium fluorosilicate 2.5g;

[0045] Sodium hexametaphosphate 2.5g; water retaining agent 5g.

[0046] After stirring evenly, it becomes components A and B of the special composite modifier for magnesite materials.

[0047] Embodiment is example with 1000g magnesium oxide.

[0048] The specific operation steps are as follows: Put 1000g of magnesium oxide and 50g of component B into the mixer for dry stirring for 3 minutes; add 800g of prepared brine (27°Bé) into the mixer and stir evenly; then add 50g of component A and continue stirring for 3-5 minutes. The stirred slurry is poured into a 40mm×40mm×160mm triple test film, and a total ...

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PUM

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Abstract

The invention relates to a bicomponent magnesite material composite modifier and a preparation method thereof. The bicomponent magnesite material composite modifier comprises the following raw material components in percentage by weight: a component A including 30-50% of phosphoric acid and 50-70% of sodium silicate, and a component B including 20-25% of latex powder, 20-30% of sepiolite fibers, 30-35% of fly ash, 3-5% of sodium fluorosilicate, 5-10% of sodium hexametahposphate and 10-15% of a water retention agent. The bicomponent composite modifier comprising the components A and B special for a magnesite material is prepared by weighing and preparing the materials in proportions. When the bicomponent magnesite material composite modifier is used, the component B and magnesia are put into a stirring machine together and are uniformly stirred, then the prepared halogen liquid is added into the stirring machine and stirred, and when the slurry is uniformly stirred, the component A is added, and the mixture is stirred for 3-5 minutes. The magnesite material modified by the bicomponent modifier has good water resistance, the early softening coefficient of the magnesite material is more than or equal to 98%, and the long-term softening coefficient of the magnesite material can reach 93-95%. The bicomponent modifier can improve the water resistance of a magnesite material product and can improve the surface moisture absorption resistance and impermeability of the product in a humid environment.

Description

technical field [0001] The invention relates to a two-component magnesite material composite modifier and a preparation method thereof. Background technique [0002] my country began to research and apply magnesite materials since the early 1950s. However, due to its poor water resistance, defects such as brine reversion and frosting, the strength of the product decreases, and it is easy to warp and denature, thus limiting the application of magnesite materials. With the rapid development of my country's economy, the demand for building materials has increased sharply, and magnesite materials have received attention again in recent years. To widely apply magnesite materials to the building materials industry, the primary problem is to improve its existing drawbacks. [0003] At present, there are many ways to improve the disadvantages of magnesite materials: control the quality of raw materials, adjust the ratio of magnesium oxide to magnesium chloride, adopt reasonable t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/24C04B28/32
Inventor 马小翠王雪张劲金宜周张炎丁益民陆文雄
Owner 上海复培新材料科技有限公司