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High hydrophobic silane paste concrete protecting agent and preparation method thereof

A high hydrophobicity, concrete technology, applied in the field of building materials, can solve the problems of high emulsifier content, high energy consumption and time cost, and complicated preparation process, and achieve simple process, low energy consumption and time cost, and strong waterproof characteristics Effect

Active Publication Date: 2016-12-07
JIANGSU SOBUTE NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Problems to be solved by the present invention: too high emulsifier content in paste preparation, too large energy consumption and time cost in the production process, and complicated preparation process, etc.

Method used

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  • High hydrophobic silane paste concrete protecting agent and preparation method thereof
  • High hydrophobic silane paste concrete protecting agent and preparation method thereof
  • High hydrophobic silane paste concrete protecting agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Add 170g of water, 13.5g of Clariant additive LO 070, 6.5g of Span-80 (average HLB of mixed emulsifier = 9.5) and 8g of modified hydrogenated castor mixed with polyamide wax with a mass fraction of 0.5% into a 2L reactor Sesame oil thickener, disperse and shear at 2800rpm for 10min, stop stirring, add 2g of thickener hydrophobic fumed silica, stir at 500rpm for 3min, then adjust the speed to 3000rpm and disperse for 5min, then adjust the speed to 5000rpm, Add 800g of 823 silane coupling agent dropwise. After the dropwise addition, adjust the rotational speed to 2000rpm and disperse for 5min to obtain a milky white uniform and stable paste.

Embodiment 2

[0027] 15g of Clariant additive LO 070, 5g of Span-80 (average HLB of mixed emulsifier=10.1) were used, and the others were consistent with Example 1.

Embodiment 3

[0029] Add 210g of water, 18g of Clariant additive LO 070, 2g of Span-80 (average HLB of mixed emulsifier=11.2) and 7g of modified hydrogenated castor oil mixed with polyamide wax with a mass fraction of 1.5% in a 2L reactor. Thickener, disperse and shear for 10min at a speed of 2800rpm, stop stirring, add 3g of thickener hydrophobic fumed silica, stir for 3min at a speed of 500rpm, then adjust the speed to 3000rpm and disperse for 5min, then adjust the speed to 5000rpm, add dropwise 770g of 1213 silane coupling agent, after the dropwise addition, adjust the speed to 2000rpm and disperse for 5min to obtain a milky white uniform and stable paste.

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Abstract

The invention discloses a preparation method of a high hydrophobic silane paste protecting agent for concrete surface protection. The silane paste concrete protecting agent is prepared from silane coupling agents, water, two emulsifying agents and two thickening agents serving as raw materials, the silane paste protecting agent can stably exist for at least 60 days without layering under the condition of high temperature (50 DEG C), 300g/m<2> of silane paste protecting agents are applied to a concrete surface and have quite high hydrophobic property, and the contact angle of the water on an interface can reach 110-150 degrees. The preparation method of the silane paste protecting agent is simple and suitable for large-scale production of factories, and solves the problem of complicated condition of a silane paste preparation method.

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 paste concrete surface protective agent. Background technique [0002] With the implementation of the country's "One Belt, One Road" strategy and the establishment of the Asian Infrastructure Investment Bank, the investment in infrastructure has increased, and the use of concrete as the most widely used building material in today's civil engineering projects is also increasing. The requirements for concrete are no longer limited to the ability to complete basic functions such as building houses, bridges and roads, and the requirements for waterproofing and beautifying the appearance of concrete are also increasing. Traditional concrete surface protective agents, such as acrylic resin and asphalt, have basic principles It is to form a dense membrane structure on the surface of the concrete, so that water ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/42C04B103/65
CPCC04B40/0039C04B2103/65C04B24/045C04B2103/0068C04B24/08C04B24/287C04B22/06C04B24/42C04B22/002
Inventor 李全龙李磊王洪松王瑞田倩刘加平
Owner JIANGSU SOBUTE NEW MATERIALS
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