Aqueous formaldehyde-free painting pigment and preparation method thereof

Abstract

The invention relates to aqueous formaldehyde-free painting pigment and a preparation method thereof. The pigment includes, by mass, 10-15 parts of toner, 60-65 parts of vegetable gum, 3.5-5.5 parts of a surfactant, 1-5 parts of an inorganic thickening agent, 0.05-0.1 part of an antibacterial agent and 0.05-0.15 part of an inorganic electrolyte. An inorganic thickening agent combination with a special composition is adopted by the pigment. In the technical scheme, the inorganic thickening agent exits in the system in a melted state, does not adsorb air on the surface and provides an environment condition against bacterium breeding, thus effectively avoiding a situation that traditional fillers exist in a particular form in a product system, easily absorb air and cause bacterium breeding. Aproduct can have good antibacterial performance by only adding a small amount of the antibacterial agent. Through addition of the inorganic thickening agent, low color difference and crack resistancewhich are comparable to those of fillers can be achieved, and the product production cost can be reduced.

Description

technical field [0001] The invention relates to the field of pigments, in particular to a water-based formaldehyde-free paint pigment and a preparation method thereof. Background technique [0002] Water-based paints refer to paints that can be dissolved or diluted with water, generally including watercolor paints, gouache paints, acrylic paints, acrylic paints, finger paints, Chinese paints, etc. [0003] In order to make water-based paints have better performance, such as no cracking, low color difference, etc., and lower manufacturing costs, fillers, such as calcium carbonate, talcum powder, etc., are generally added to paints, but the fillers are in the product. It exists in the form of granular particles, has a large specific surface area, absorbs a large amount of air, and easily causes bacterial growth. In order to overcome this shortcoming, a large amount of antibacterial agent is often required to effectively eliminate bacteria. In the prior art, in order to preven...

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Problems solved by technology

However, formaldehyde is extremely harmful to the human body, mainly due to sensitization and stimulation, and it is also a genotoxic substance. During the use of the product, free formaldehyde is released, which can cause respiratory tract infection or carcinogenesis when inhaled by the human body; BCM and chlorothalonil fungicides are harmful to humans. It has a stimulating effect on the skin and eyes and can cause dermatitis. At the same time, it is extremely toxic to aquatic organisms and has long-term adverse effects on the water environment; the price of metallic silver is relatively expensive, which makes the manufacturing cost of the pigment high.

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