Aqueous environmentally-friendly nano-copolymer multifunctional defoamer and preparation method thereof

Abstract

The embodiment of the invention provides an aqueous environmentally-friendly nano-copolymer multifunctional defoamer and a preparation method thereof. The raw materials of the defoamer comprise, by mass, 20-26% of a natural vegetable fatty alcohol, 10-15% of a higher fatty alcohol, 5-10% of an amide, 5-8% of a nano-hydrophobic agent, 0.5-1% of a fluorine monomer, 3-6% of a silane, 2-5% of an initiator, 1-2% of an active polymerization agent, 0.5-1% of a catalyst, 1-2% of a thickener, 1-2% of an antifreeze agent and 30-45% of deionized water. The defoamer provided by the embodiment of the invention is prepared by raw material selection and a copolymerization synthesis mode, a nano-material group is introduced to change the polymer structure, and harmful substances such as a conventional emulsifier, formaldehyde and silicone oil are not used, so the versatility, the weather resistance, the stain resistance, the high corrosion resistance and the auto-cleaning property are improved. The product can be decomposed by hydrolysis, photodegradation and biodegradation without causing cumulative effects, so the product is very safe to water sources and the environment.

Description

technical field [0001] The embodiment of the present invention relates to the technical field of defoamers, in particular to a water-based environmentally friendly nano-copolymer multifunctional defoamer and a preparation method thereof. Background technique [0002] In the fields of chemical industry, coating industry, food industry, petroleum industry, civil construction industry, textile industry, paper industry, pharmaceutical industry or drainage treatment process, industrial production and mixing process of solutions, slurries and raw materials will produce Many foams interfere with the normal progress of manufacturing and product quality, and more importantly, there are emulsifiers, molecular dissociation and polymer residues, all of which have great risks of harm to environmental water sources, biological plants and human health. As an auxiliary additive that can eliminate foam well and suppress foam generation, defoamer has extremely wide applications in these field...

AI Technical Summary

Problems solved by technology

[0004] Traditional defoamers are usually made of mineral oil, alcohol, grease, silicon, etc., the performance of some varieties in practical applications is not ideal, it is difficult to apply in high temperature environment, strong acid and strong alkali solution medium, at the same time due to the selection of raw materials and In the process of process preparation, it is almost necessary to add a large amount of emulsifiers for emulsification. Some of these materials are quite harmful to the environment and organisms. Long-term contact will cause skin allergies, and they are highly toxic to mammals and aquatic organisms. Difficult to decompose, the decomposition products cause the accumulation of organisms in the food chain, causing great long-term harm to environmental water sources and biological plants

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