Organosilicon waterproof emulsion and preparation method and application of organosilicon waterproof emulsion

A waterproof emulsion and silicone technology, which is applied in the field of building waterproofing, can solve the problems of airtight walls, cracks and hollows, and easy aging, and achieve the effects of environmental friendliness, strong penetration and long-lasting waterproof performance

Active Publication Date: 2013-04-17
于化平
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional waterproof materials such as asphalt felt have disadvantages such as easy aging, short life, difficult construction, and high cost; modified asphalt membranes, APP (atactic polypropylene), SBS (styrene-butadiene- Styrene copolymer) coiled material, BBI (bisbenzenesulfonimide) mortar waterproof material, etc. are not resistant to aging and have poor water resistance. After being affected by temperature changes, the coiled material and the substrate are easily separated, resulting in cracks and hollowing And other shortcomings, the joint is easy to crack
The waterproofing principle of these ordinary waterproofing agents is to block the pores of the masonry material to repel the intrusion of moisture from the outside. Since the small pores are blocked, the wall is airtight, so when the moisture is discharged from the pores of the masonry, it can break through the surface. The waterproof coating, resulting in a very short life of the coating
In addition, these materials are not easy to construct in complex parts of the building, require high technology, and are time-consuming and labor-intensive

Method used

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  • Organosilicon waterproof emulsion and preparation method and application of organosilicon waterproof emulsion
  • Organosilicon waterproof emulsion and preparation method and application of organosilicon waterproof emulsion
  • Organosilicon waterproof emulsion and preparation method and application of organosilicon waterproof emulsion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Add 20 kg of hydroxyethyl-terminated polydimethylsiloxane with a viscosity of about 300-500 mPa·s and 40 kg of water into the reaction kettle with a stirrer, and stir at room temperature for about 1 hour at a speed of 500 rpm. Add 20kg of silane coupling agent allyltrimethoxysilane, 2kg of emulsifier fatty alcohol polyoxyethylene ether (AEO-23) and 600kg of water into another reactor and stir at room temperature for about 2 hours at a speed of 480 rpm. Then, the agitator of the above two systems was mixed, and placed in an ultrasonic emulsifier for room temperature emulsification for 10 minutes to obtain a milky white super impermeable silicone building waterproof emulsion, and the average particle diameter of the waterproof emulsion particles is About 150~300nm.

Embodiment 2

[0042] Add 20kg of hydroxyethyl-terminated polydimethylsilane with a viscosity of about 300-500mPa·s and 40kg of water into a reaction kettle with a stirrer, and stir at room temperature for about 1.1 hours at a speed of 520 rpm. Add 20kg of silane coupling agent allyltrimethoxysilane, 1.4kg of emulsifier fatty alcohol polyoxyethylene ether (AEO-9) and 600kg of water into another reaction kettle and stir at room temperature for about 2.1 hours at a speed of 500 rpm . Then, the agitator of the above two systems was mixed, and placed in an ultrasonic emulsifier for room temperature emulsification for 12 minutes to obtain a milky white super impermeable silicone building waterproof emulsion, and the average particle diameter of the waterproof emulsion particles is About 150~300nm.

Embodiment 3

[0044] Add 10kg of hydroxymethyl-terminated polydimethylsiloxane with a viscosity of about 300-500mPa·s and 40kg of water into a reaction kettle with a stirrer, and stir at room temperature at a speed of 600 rpm for about 0.8 hours. Add 30kg of silane coupling agent 3-aminopropyltriethoxysilane, 2.8kg of emulsifier fatty alcohol polyoxyethylene ether (AEO-15) and 600kg of water into another reactor and stir at room temperature at a speed of 500 rpm about 2 hours. Then, the agitator of the above two systems was mixed, and placed in an ultrasonic emulsifier for emulsification at room temperature for 8 minutes to obtain a milky white super impermeable silicone building waterproof emulsion. The average particle diameter of the waterproof emulsion particles is About 150~300nm.

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Abstract

The invention discloses an organosilicon waterproof emulsion which comprises the following raw materials in parts by weight: 1-100 parts of siloxane or silane containing an active group, 4-100 parts of silane coupling agent, 1-20 parts of emulgator and 600-22000 parts of water. The invention further provides a preparation method of the organosilicon waterproof emulsion, which comprises the steps of (1) adding siloxane or silane containing the active group and the water into a reaction kettle provided with a stirrer, stirring for about 0.8-1.2h, (2) adding the silane coupling agent, the emulgator and the water into another reaction kettle provided with a stirrer, stirring for about 1.5-2.5h, and (3) mixing stirred substances obtained from Step (1) and Step (2), placing in an ultraemulsifier for emulsification, and obtaining the creamy white organosilicon waterproof emulsion. The waterproof emulsion has the advantages of high permeability and lasting waterproofness, and is applicable to the blending and surface waterproofing treatment of building materials, and a waterproof and anti-permeability assessment conclusion is P24.

Description

technical field [0001] The invention relates to the field of building waterproofing, in particular to a silicone waterproof emulsion and its preparation method and application. Background technique [0002] In recent years, although my country has made great progress in building waterproofing. However, the current waterproof materials and waterproof technology of construction projects can not fully adapt to the development of the situation. The leakage caused by the waterproofing of concrete structures is relatively serious, and the phenomenon of roof leakage is common. According to pertinent data introduction: " part urban house leakage problem has become public nuisance. The housing construction of national completion every year has 100,000,000 square meters, and wherein 30% of buildings leak in less than 3 years ". Relevant department once carried out investigation and statistics to existing housing construction, and sampling shows: there is leakage in various degrees in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/42C04B41/49C04B103/65
Inventor 于化平梅向东
Owner 于化平
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