Cationic polyacrylate fluoride-free waterproof agent and preparation method thereof

Abstract

The invention discloses a cationic polyacrylate fluoride-free waterproof agent and a preparation method thereof. The cationic polyacrylate fluoride-free waterproof agent is prepared from the followingcomponents in percentage by mass: 5 to 40% of butyl acrylate, 5 to 35% of methyl methacrylate, 0.5 to 5% of long-chain acrylic acid fatty alcohol ester, 0.5 to 4% of a reactive cationic emulsifier and 45 to 75% of deionized water, wherein the sum of the mass amount of the above components is 100%. The preparation method comprises the following steps: step 1, preparing the reactive cationic emulsifier; step 2, preparing a pre-emulsion; and 3, preparing the cationic polyacrylate soap-free emulsion. The cationic polyacrylate fluoride-free waterproof agent contains no PFOS or PFOA and has good waterproofness, the invention further discloses the preparation method of the cationic polyacrylate fluoride-free waterproof agent, the preparation method can be used for preparing the synthetic reaction type cationic emulsifier, and the waterproofness of the fluoride-free waterproof agent is fully improved.

Description

technical field [0001] The invention belongs to the field of waterproofing agent and preparation technology, and in particular relates to a cationic polyacrylate fluorine-free waterproofing agent, and also relates to a preparation method of the waterproofing agent. Background technique [0002] Polyacrylate waterproofing agent is a new type of waterproofing agent that has developed rapidly in recent years. Among them, the polyacrylate emulsion contained in the polyacrylate waterproofing agent is the product of emulsion polymerization of acrylate or methacrylate and other vinyl ester monomers. It has excellent water resistance, weather resistance, and water resistance. The properties of acidity, alkalinity and corrosion resistance make it gradually become the leader of the waterproof coating market, which is the development direction of the modern waterproof industry. However, polyacrylate polymers can only be waterproof, and the waterproof level is not high, so they are ofte...

AI Technical Summary

Problems solved by technology

Among them, the polyacrylate emulsion contained in the polyacrylate waterproofing agent is the product of emulsion polymerization of acrylate or methacrylate and other vinyl ester monomers. It has excellent water resistance, weather resistance, and water resistance. The properties of acidity, alkalinity and corrosion resistance make it gradually become the leader of the waterproof coating market, which is the development direction of the modern waterproof industry. However, polyacrylate polymers can only be waterproof, and the waterproof level is not high, so they are often used in synthetic coatings. In the process, organic fluorine and other monomers are added to improve its water resistance, weather resistance and corrosion resistance, etc. However, it is found that fluorine-containing polymers will produce PFOA and PFOS by-products during the production process, which are refractory and biodegradable. Accumulation, carcinogenicity, etc., have potential hazards to human body and environment; in addition, because cationic polyacrylate emulsion is positively charged, it can be combined with various negatively charged fabrics through electrostatic interaction with ionic bonds, which has little environmental pollution, Safe and non-toxic, excellent mechanical stability, excellent film-forming properties, easy processing and other advantages, so the study of cationic polyacrylate emulsion is of great significance, and the current research on cationic polyacrylate fluorine-free water repellent Most of them adopt the traditional emulsion polymerization method, which will make the existence of emulsifier affect the compactness, water resistance, scrub resistance and adhesion of the emulsion film, etc.

Images