Modified silica sol, fireproof liquid, composite fireproof glass as well as preparation method and application thereof

A fireproof glass, silica sol technology, applied in silicon compounds, fireproof coatings, chemical instruments and methods, etc., can solve the problems of high modulus design of fireproof liquid formula and loss of transparency, etc., to improve bond strength, strong adhesion, etc. The effect of focus

Active Publication Date: 2021-02-05
SHANGHAI XINANNA ELECTRONICS TECH +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The higher the modulus, the higher the hardness and foaming density, but it is likely to lose transparency, so the formula of fireproofing liquid should not design the modulus too high
[0008] In order to improve the overall performance of the fireproofing fluid, domestic researchers have conducted many studies on improving the foam prod

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] 1. Put the silica sol to be modified into the reaction vessel, and heat up to 40°C;

[0051] 2. Weigh the epoxy silane coupling agent KH560 according to 0.2% of the mass of the silica sol to be modified, and slowly add it dropwise into the silica sol under the condition of rapid stirring;

[0052] 3. Keep the temperature at 40°C and stir rapidly for 4 hours.

[0053] 4. Weigh the water-based polyester resin according to 1% of the mass of the silica sol to be modified, add it to the modified silica sol obtained in step 3, continue stirring at 40° C. for 4 hours, stop the reaction, and filter.

[0054] 5. Mix the organic resin modified silica sol obtained in step 4 with the unmodified silica sol (by modified silica sol: unmodified silica sol=2:1, mass ratio), then add KOH solution (KOH concentration is 50wt%), formulated as a silicate solution with a modulus of 4.8 (i.e. SiO 2 with K 2 The molar ratio of O is 4.8), fully stirred evenly.

[0055] 6. Based on the qualit...

Embodiment 2

[0058] 1. Put the silica sol to be modified into the reaction vessel and heat up to 50°C;

[0059] 2. Weigh the aminosilane coupling agent KH550 according to 1% of the mass of the silica sol to be modified, and slowly add it dropwise to the silica sol under the condition of rapid stirring;

[0060] 3. Keep the temperature at 50°C and stir rapidly for 4 hours.

[0061] 4. Weigh the water-based polyacrylic acid resin according to 5% of the mass of the silica sol to be modified, add it into the modified silica sol obtained in step 3, continue stirring at 50° C. for 10 h, stop the reaction, and filter.

[0062] 5. Mix the organic resin modified silica sol obtained in step 4 with the unmodified silica sol (by modified silica sol: unmodified silica sol=1:2, mass ratio), then add KOH solution (KOH concentration is 50wt%), formulated as a silicate solution with a modulus of 4.2 (i.e. SiO 2 with K 2 The molar ratio of O is 4.2), fully stirred evenly.

[0063] 6. Based on the qualit...

Embodiment 3

[0066] 1. Put the silica sol to be modified into the reaction vessel, and heat up to 70°C;

[0067] 2. Weigh the aminosilane coupling agent KH550 according to 0.5% of the mass of the silica sol to be modified, and slowly add it dropwise to the silica sol under the condition of rapid stirring;

[0068] 3. Keep the temperature at 70°C and stir rapidly for 2 hours.

[0069] 4. Weigh the water-based polyvinyl butyral resin according to 3% of the mass of the silica sol to be modified, add it to the modified silica sol obtained in step 3, continue stirring at 70° C. for 2 hours, stop the reaction, and filter.

[0070] 5. Mix the organic resin modified silica sol obtained in step 4 with the unmodified silica sol (by modified silica sol: unmodified silica sol=1:1, mass ratio), then add KOH solution (KOH concentration is 50wt%), prepared into a silicate solution with a modulus of 5.5 (that is, the molar ratio of SiO2 to K2O is 5.5), fully stirred evenly.

[0071] 6. Based on the qual...

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PUM

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Abstract

The invention belongs to the technical field of inorganic nano materials, and particularly relates to modified silica sol, fireproof liquid, composite fireproof glass and a preparation method and application thereof. The preparation method of the modified silica sol comprises the following steps: 1) mixing silica sol to be modified with a silane coupling agent and reacting; and 2) mixing an organic polymer containing a reaction group with the material obtained in the step 1) and reacting to obtain the modified silica sol. The modified silica sol is prepared by the preparation method and is used for preparing the fireproof liquid, and the obtained fireproof liquid is high in crosslinking density and good in adhesive force.

Description

technical field [0001] The invention belongs to the technical field of inorganic nanometer materials, and specifically relates to a modified silica sol, a fireproof liquid, a composite fireproof glass and a preparation method and application thereof. Background technique [0002] Fireproof glass is a building door and window glass component with fireproof function. In the event of a fire, it can be kept for a long time without bursting due to the thermal shock of the flame, thus effectively preventing the spread of flame and smoke. It is beneficial to ensure that people trapped by the fire have enough time to evacuate the scene and buy time for fire rescue. It is a functional glass product that can effectively prevent the spread of fire and isolate smoke. [0003] Fireproof glass is divided into single fireproof glass and composite fireproof glass. [0004] Single-piece fire-resistant glass is a single-layer glass component, which can meet the corresponding fire-resistant g...

Claims

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Application Information

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IPC IPC(8): C01B33/146C03C27/12C09D1/00C09D5/18
CPCC01B33/146C03C27/10C09D1/00C09D5/18
Inventor 金兴菊秦飞李宏亮孔慧刘卫丽
Owner SHANGHAI XINANNA ELECTRONICS TECH
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