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Permeable organic silicon nano water-proof protective agent and preparation method thereof

A technology of organic silicon and protective agent, which is applied in the field of penetrating organic silicon nano waterproof protective agent and its preparation, can solve problems such as limited degree, and achieve the effect of low production cost, good dispersion performance and favorable mass production

Inactive Publication Date: 2012-08-22
SHANGHAI JIAOTONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this silicone waterproofing agent has greatly improved the protection of concrete, the degree is limited.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The first step is to use silane coupling agent KH-570 to carry out surface treatment on nano-silica and nano-zinc oxide particles, which specifically includes the following steps:

[0023] 1) Mix isopropanol and 1%wt water evenly, then add 1%wt KH-570 silane coupling agent dropwise, stir for 2 hours, and mix evenly.

[0024] 2) Add 80% rutile nano-silicon dioxide (zinc oxide) particles, put it in an oven at 80° C. for drying for 1 hour, then transfer it to an oven at 120° C. and dry it completely.

[0025] 3) Grinding the obtained nano-powder into fine particles in a mortar to obtain nano-silica (zinc oxide) particles surface-modified by the silane coupling agent KH-570.

[0026] The second step is to weigh 0.1%wt nano-silica and 0.1%wt nano-zinc oxide, add them to the solvent, ultrasonically disperse and mix evenly, then add 50% alkyl alkoxy silicone, stir evenly, and make an infiltration type Silicone nano waterproof protective agent.

[0027] The components and mas...

Embodiment 2

[0030] The difference from Example 1 lies in the proportioning of nano silicon dioxide and nano zinc oxide.

[0031] The first step is to use silane coupling agent KH-570 to carry out surface treatment on nano-silica and nano-zinc oxide particles, which specifically includes the following steps:

[0032] 1) Mix isopropanol and 1%wt water evenly, then add 1%wt KH-570 silane coupling agent dropwise, stir for 2 hours, and mix evenly.

[0033] 2) Add 80% rutile nano-silicon dioxide (zinc oxide) particles, put it in an oven at 80° C. for drying for 1 hour, then transfer it to an oven at 120° C. and dry it completely.

[0034] 3) Grinding the obtained nano-powder into fine particles in a mortar to obtain nano-silica (zinc oxide) particles surface-modified by the silane coupling agent KH-570.

[0035] The second step is to weigh 0.5% nano-silica and 0.5% nano-zinc oxide, add them to the solvent, ultrasonically disperse and mix evenly, then add 50% alkyl alkoxy silicone, stir evenly,...

Embodiment 3

[0039] The difference from Examples 1 and 2 lies in the proportioning of nano silicon dioxide and nano zinc oxide.

[0040] The first step is to use silane coupling agent KH-570 to carry out surface treatment on nano-silica and nano-zinc oxide particles, which specifically includes the following steps:

[0041] 1) Mix isopropanol and 1%wt water evenly, then add 1%wt KH-570 silane coupling agent dropwise, stir for 2 hours, and mix evenly.

[0042] 2) Add 80% rutile nano-silicon dioxide (zinc oxide) particles, put it in an oven at 80° C. for drying for 1 hour, then transfer it to an oven at 120° C. and dry it completely.

[0043] 3) Grinding the obtained nano-powder into fine particles in a mortar to obtain nano-silica (zinc oxide) particles surface-modified by the silane coupling agent KH-570.

[0044] The second step is to weigh 1% nano-silica and 1% nano-zinc oxide, add them to the solvent, ultrasonically disperse and mix evenly, then add 50% alkyl alkoxy silicone, stir even...

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Abstract

The invention relates to a permeable organic silicon nano water-proof protective agent and a preparation method thereof in the technical field of nano building materials. The permeable organic silicon nano water-proof protective agent comprises the following components in percentage by mass: 0.1 to 1 percent of nano silicon dioxide, 0.1 to 1 percent of nano zinc oxide, 40 to 50 percent of alkyl alkoxy organic silicon and 40 to 50 percent of organic solvent. The permeable organic silicon nano water-proof protective agent prepared by the method is that nano particles SiO2 and ZnO are added on the basis of the conventional alkylalkoxysilane, so that water absorption is reduced dramatically, water penetration depth is obviously increased, and hydrophobic property is also obviously improved.

Description

technical field [0001] The invention relates to a material in the technical field of nano-building materials and a preparation method thereof, in particular to a permeable silicone nano-waterproof and protective agent and a preparation method thereof. Background technique [0002] The structure of reinforced concrete itself and the chemical composition of cement hydration products determine that it is susceptible to various factors in the external environment during use, resulting in performance degradation. Chief among these factors is freezing and thawing. Water is a necessary factor for the freeze-thaw damage of concrete. The pore water or crack water in the concrete expands after being frozen, and repeated freeze-thaw will cause the concrete to crack. The moisture content of concrete directly affects the frost resistance of concrete. [0003] Concrete is an artificial stone with a certain porosity, and the number of pores is related to the preparation and construction ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B41/50C04B41/49
Inventor 贺蓉刘海峰刘朴李娜崔大祥
Owner SHANGHAI JIAOTONG UNIV
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