A kind of preparation method of highly hydrophobic silane emulsion concrete waterproofing agent
A technology of concrete waterproofing agent and silane emulsion, applied in the field of building materials, can solve the problems of complex production process of silane emulsion and poor storage stability of silane emulsion, and achieve the effect of good hydrophobic effect, high stability and good fluidity
Active Publication Date: 2018-08-31
JIANGSU SOBUTE NEW MATERIALS
View PDF2 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0006] The technical problem solved by the present invention is to overcome the problems of complex production process of existing silane emulsions and poor storage stability of silane emulsions, and provide a method for preparing a highly hydrophobic silane emulsion concrete waterproofing agent with a simple and efficient production method
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0022] Add 200g water, 10g emulsifier AEO-7 and 20g AEO-25 (average HLB value is 15.0) in 2L reactor, emulsify 15min at the rotation speed of 16000rpm, add dropwise 200g of 823 silane (n-octyltriethoxy Silane), continue to emulsify at 16000rpm for 5min, stop the dispersion, add 30g of thickener hydrophilic fumed silica HL-380 to the reaction kettle, add 5g of thickener hydrophobic fumed silica HB after fully wetting -220, disperse at 500rpm for 5 minutes, then adjust the speed to 3000rpm, then add the remaining 200g of 823 silane and 400g of water dropwise at the same time, and disperse at 3000rpm for 15min after the dropwise addition, to obtain the high hydrophobicity of the present invention Silane emulsion concrete waterproofing agent.
Embodiment 2
[0024] Except that the mass of the thickener hydrophobic fumed silica HB-220 used was 10 g, other conditions were consistent with Example 1.
Embodiment 3
[0026] Except that the mass of the thickener hydrophobic fumed silica HB-220 used was 15 g, other conditions were consistent with Example 1.
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a preparation method of a high-hydrophobicity silane emulsion concrete waterproofer for concrete surface protection. The high-hydrophobicity silane emulsion concrete waterproofer is prepared from the raw materials of a silane coupling agent, water, a mixed emulsifier and two thickening agents. The high-hydrophobicity silane emulsion concrete waterproofer can stably exist without being layered for at least 50 days at a high-temperature condition (about 45 DEG C), is sprayed to the concrete surface at the amount of 500 g / m<2>, and is high in hydrophobicity; the contact angle of water on an interface can be 110 to 140 degrees. The preparation method of the high-hydrophobicity silane emulsion concrete waterproofer disclosed by the invention is simple; the problems of complicated conditions of the conventional method and low storage stability of a product obtained by the conventional method in the prior art are solved; the preparation method is suitable for large-scale production of a factory.
Description
technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a preparation method of a highly hydrophobic silane emulsion concrete surface waterproofing agent. Background technique [0002] With the wide application of concrete materials, people's performance requirements for concrete are gradually increasing, and the problem of concrete corrosion is becoming more and more prominent. Every year, a large number of concrete buildings are damaged to varying degrees due to rainwater erosion, acid rain corrosion, etc. The demand for concrete waterproofing materials is increasing. The basic principle of traditional concrete surface protective agents, such as acrylic resin and asphalt, is to form a dense film structure on the concrete surface, so that water cannot penetrate into the interior through the concrete surface to achieve the purpose of waterproofing, but this also prevents the internal moisture and The exchange o...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): C04B41/65
CPCC04B41/5035C04B41/65C04B41/502C04B41/4896C04B41/4922
Inventor 李全龙李磊王洪松王瑞田倩刘加平
Owner JIANGSU SOBUTE NEW MATERIALS