Efficient waterborne nano silicone rubber sealing waterproof agent

A technology of nano-silicone rubber and waterproofing agent, applied in the field of waterproofing agent, can solve the problems of incomplete waterproofing, impermeability damage, and failure to meet the requirements of buildings, etc., to improve heat resistance and cold resistance, and strong penetration , Improve the effect of stress resistance

Inactive Publication Date: 2019-05-24

严飞华

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AI-Extracted Technical Summary

Problems solved by technology

[0002] With the rapid development of society, various buildings continue to appear, and people have higher and higher requirements for the safety and reliability of buildings. Concrete is the main building material, and concrete is a brittle material with low tensile strength and limit The tensile strain is small. When the internal stress caused by volume shrinkage due to drying shrinkage, chemical shrinkage, and carbonation shrinkage exceeds its own tensile strength during the setting and hardening process, the concrete will inevitably crack. Therefore, the anti-seepage and waterproofing of construction projects has attracted people's attention, so people invented waterproofing agents for cement concrete. With the advancement of science and technology, people's requirements for...

Abstract

The invention discloses an efficient waterborne nano silicone rubber sealing waterproof agent. The efficient waterborne nano silicone rubber sealing waterproof agent is prepared by, by weight, 10-15 parts of nano calcium carbonate powder, 18-25 parts of nano-silica dispersion liquid, 20-30 parts of lithium silicate solution, 12-16 parts of polyphenyl particles, 5-8 parts of sodium alkyl benzene sulfonate, 12-22 parts of fly ash, 10-15 parts of calcium stearate, 6-10 parts of Sodium methylsiliconate, 1-3 parts of fluorocarbon surfactant, 2-6 parts of triethanolamine, 1-3 parts of defoaming agent and 8-15 parts of deionized water. The efficient waterborne nano silicone rubber sealing waterproof agent has the advantages that the waterproof agent is safe, nontoxic, free of peculiar smell and environmentally friendly; the waterproof agent can form a film on the surface of concrete and fill pores inside the concrete, and accordingly the permeability resistance of the concrete is increased greatly, and high density inside the concrete is achieved; the waterproof agent is high in adhering force and infiltration capacity, can increase the pressure resistance, heat resistance and cold resistance of the concrete and is promising in application prospect.

Technology Topic

ChemistryTriethanolamine +16

Image

Examples

Experimental program(3)
Comparison scheme(2)
Effect test(1)

Example Embodiment

[0022] Example 1

[0023] A high-efficiency water-based nano silicone rubber sealing and waterproofing agent is made of the following components by weight: 12 parts of nano calcium carbonate powder, 20 parts of nano silica dispersion, 21 parts of lithium silicate solution, 14 parts of polyphenylene particles, and 6 parts of sodium benzene sulfonate, 16 parts of fly ash, 13 parts of calcium stearate, 9 parts of sodium methylsilicate, 2 parts of fluorocarbon surfactant, 3 parts of triethanolamine, 1 part of antifoaming agent, and 11 parts of ionized water.

[0024] The fineness of the fly ash is 80 mesh, and the fineness of the polyphenylene particles is 60 mesh.

[0025] The preparation steps of high-efficiency water-based nano silicone rubber sealing and waterproofing agent are as follows:

[0026] ①. First, feed the nano calcium carbonate powder, fly ash, and polystyrene particles into the mixer according to the above ratio and mix evenly to obtain mixed powder. The mixer adopts a powder mixer, and the mixing speed of the powder mixer is 26r/min. Mix for 14 minutes;

[0027] ②. Dissolve the nano-silica dispersion and sodium alkylbenzene sulfonate in deionized water for dissolution, and then add the lithium silicate solution and stir. The defoaming agent needs to be added during the stirring process, and the mixed liquid will be obtained after stirring. First put the deionized water into the stirring pot, then add the nano-silica dispersion and sodium alkylbenzene sulfonate to the deionized water, then stir for 4 minutes at a stirring rate of 40r/min, add the lithium silicate solution and stir 2 minutes, the stirring rate is 30r/min;

[0028] ③. Feed the mixed powder, mixed liquid, triethanolamine and sodium alkylbenzene sulfonate into the reaction kettle for reaction. During the reaction, add fluorocarbon surfactants to obtain the mixture. The reaction kettle needs to be heated up during the reaction process. The temperature is controlled at 100 degrees Celsius, and it needs to be stirred 3 times during the reaction, each stirring for 5 minutes, and stirring once every 2 minutes, the stirring rate is 80r/min;

[0029] ④. The mixture is sent to a pulverizer for pulverization to obtain a high-efficiency water-based nano silicone rubber sealing and waterproofing agent. When the temperature of the mixture is reduced to 35 degrees Celsius, it is taken out of the reaction kettle, and the fineness of the mixture is 60 mesh during pulverization.

Example Embodiment

[0030] Example 2

[0031] A high-efficiency water-based nano silicone rubber sealing and waterproofing agent, which is made of the following components by weight: 13 parts of nano calcium carbonate powder, 21 parts of nano silica dispersion, 25 parts of lithium silicate solution, 14 parts of polyphenyl particles, 6 parts of sodium alkylbenzene sulfonate, 18 parts of fly ash, 13 parts of calcium stearate, 8 parts of sodium methyl silicate, 2 parts of fluorocarbon surfactant, 4 parts of triethanolamine and 2 parts of defoamer and 10 parts of deionized water.

[0032] The fineness of the fly ash is 80 mesh, and the fineness of the polyphenylene particles is 60 mesh.

[0033] The preparation steps of high-efficiency water-based nano silicone rubber sealing and waterproofing agent are as follows:

[0034] ①. First, feed the nano calcium carbonate powder, fly ash, and polystyrene particles into the mixer according to the above ratio and mix evenly to obtain mixed powder. The mixer adopts a powder mixer, and the mixing speed of the powder mixer is 28r/min. Mix for 15 minutes;

[0035] ②. Dissolve the nano-silica dispersion and sodium alkylbenzene sulfonate in deionized water for dissolution, and then add the lithium silicate solution and stir. The defoamer needs to be added during the stirring process, and the mixed liquid will be obtained after stirring. First put the deionized water into the stirring pot, then add the nano-silica dispersion and sodium alkylbenzene sulfonate to the deionized water, then stir for 4 minutes at a stirring rate of 45r/min, add the lithium silicate solution and then stir 2 minutes, the stirring rate is 32r/min;

[0036] ③. Feed the mixed powder, mixed liquid, triethanolamine and sodium alkylbenzene sulfonate into the reaction kettle for reaction. During the reaction, add fluorocarbon surfactants to obtain the mixture. The reaction kettle needs to be heated up during the reaction process. The temperature is controlled at 100 degrees Celsius, and it needs to be stirred 3 times during the reaction, each stirring for 5 minutes, and stirring once every 2 minutes, the stirring rate is 80r/min;

[0037] ④. The mixture is sent to a pulverizer for pulverization to obtain a high-efficiency water-based nano silicone rubber sealing and waterproofing agent. When the temperature of the mixture is reduced to 35 degrees Celsius, it is taken out of the reaction kettle, and the fineness of the mixture is 60 mesh during pulverization.

Example Embodiment

[0038] Example 3

[0039] A high-efficiency water-based nano silicone rubber sealing and waterproofing agent is made of the following components by weight: 12 parts of nano calcium carbonate powder, 20 parts of nano silica dispersion, 21 parts of lithium silicate solution, 14 parts of polyphenylene particles, and 6 parts of sodium benzene sulfonate, 16 parts of fly ash, 14 parts of calcium stearate, 9 parts of sodium methyl silicate, 1 part of fluorocarbon surfactant, 3 parts of triethanolamine, 1 part of defoamer, and 11 parts of ionized water.

[0040] The fineness of the fly ash is 80 mesh, and the fineness of the polyphenylene particles is 60 mesh.

[0041] The preparation steps of high-efficiency water-based nano silicone rubber sealing and waterproofing agent are as follows:

[0042] ①. First, feed the nano calcium carbonate powder, fly ash, and polystyrene particles into the mixer according to the above ratio and mix evenly to obtain mixed powder. The mixer adopts a powder mixer, and the mixing speed of the powder mixer is 25r/min. Mix for 12 minutes;

[0043] ②. Dissolve the nano-silica dispersion and sodium alkylbenzene sulfonate in deionized water for dissolution, and then add the lithium silicate solution and stir. The defoaming agent needs to be added during the stirring process, and the mixed liquid will be obtained after stirring. First put the deionized water into the stirring pot, then add the nano-silica dispersion and sodium alkylbenzene sulfonate to the deionized water, and then stir for 3 minutes at a stirring rate of 38r/min, and then stir after adding the lithium silicate solution 2 minutes, the stirring rate is 28r/min;

[0044] ③. Feed the mixed powder, mixed liquid, triethanolamine and sodium alkylbenzene sulfonate into the reaction kettle for reaction. During the reaction, add fluorocarbon surfactants to obtain the mixture. The reaction kettle needs to be heated up during the reaction process. The temperature is controlled at 100 degrees Celsius, and it needs to be stirred 3 times during the reaction, each stirring for 4 minutes, and stirring once every 2 minutes, the stirring rate is 80r/min;

[0045] ④. The mixture is sent to a pulverizer for pulverization to obtain a high-efficiency water-based nano silicone rubber sealing and waterproofing agent. When the temperature of the mixture is reduced to 35 degrees Celsius, it is taken out of the reaction kettle, and the fineness of the mixture is 60 mesh during pulverization.

PUM

Property	Measurement	Unit
Fineness	80.0	mesh
Fineness	60.0	mesh

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