Preparation method of enhanced waterproof and mildew-proof organic silicon waterproofing agent

Abstract

The invention relates to a method for preparing a reinforced water-proof and mildew-proof organosilicon water-proof agent. The method comprises the following preparing steps: first, adding triethoxyoctylsilane, a silicon resin prepolymer and a nonionic surfactant in a plastic cup, uniformly agitating, pouring the mixture into a high-shear emulsifying machine, starting the high-shear emulsifying machine, adding deionized water in multiple times, and adding a buffer solution to obtain a water-proof agent emulsion; then, dissolving octyl isothiazolone in propylene glycol to obtain an octyl isothiazolone solution, and mixing silane quaternary ammonium salt and the octyl isothiazolone solution to obtain an enhanced silane quaternary ammonium salt anti-bacterial and mildew-proof agent; weighing the water-proof agent emulsion, and obtaining an enhanced water-proof and mildew-proof concentrated solution B after the enhanced silane quaternary ammonium salt anti-bacterial and mildew-proof agent is added; finally diluting the water-proof and mildew-proof concentrated solution B with the deionized water by to ten times to prepare the water-proof and mildew-proof organosilicon water-proof agent. The water-proof and mildew-proof organosilicon water-proof agent is suitable for the fields of fabric, leather, construction materials (including stone materials, cement and the like) and the like.

Description

technical field [0001] The invention belongs to the technical field of protective agents, and relates to a preparation method of a reinforced waterproof and mildew-proof organic silicon waterproof agent. Background technique [0002] Textiles and leather products, as well as wood, stone, cement products, etc. are not only required to be waterproof, but also require anti-mildew and anti-bacterial, because they are prone to mildew. Bacteria, mold and fungus are everywhere and all the time, especially natural products such as silk and wool fabrics, and leather products are prone to mildew, because they are also the source of nutrition for microorganisms; although stone cement itself is not a source of nutrition for mold, but long-term It is also easy to grow mold and moss in a damp environment, which seriously affects their appearance. [0003] Silicone includes silane, polysiloxane such as silicone oil, and silicone resin is the preferred material for waterproofing. It has be...

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Problems solved by technology

But isopropyl alcohol is flammable and unsafe

Another example is the patent introduction of US8202919, which uses toluene as a solvent, styrene-butadiene rubber as a binder, and adds antifungal agent triclosan to treat buildings, which is waterproof and mildewproof, but toluene is highly toxic and pollutes the environment.

[0006] Chinese patent 91109941.7 uses hydroxyl silicone oil emulsion plus antifungal agent to make leather moldproof, but no effect is seen. Another example is Chinese patent application number 2011045453, which uses nonionic and cationic surfactants to emulsify hydrogen-containing silicone oil to treat building materials to make them waterproof and waterproof. Mildew, but general cationic surfactants are not resistant to rain washing, mildew resistance is not durable

Another example is the Chinese Patent Application No. 201110374274.3, which introduces a waterproof and antifungal agent for wood-based panels and its manufacturing method. The composition of paraffin, stearic acid and chitosan is added to the wood-based panel to press and form it, so that it is waterproof and mildew-proof, but chitosan is used Sugar has limited anti-mildew effect

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