Water-based surface treatment agent for color coating pretreatment of galvanized plates

Abstract

The invention provides a water-based surface treatment agent for the color coating pretreatment of galvanized plates, and belongs to the technical field of the surface treatment of color-coated galvanized plates. The water-based surface treatment agent comprises the following components in percentage by mass: 20 to 60 percent of water-based resin, 1 to 5 percent of organosilane, 0.5 to 2.5 percent of inorganic corrosion inhibitor, 0.5 to 3 percent of sealant, 1 to 3 percent of accelerating agent and the balance of deionized water. In the water-based surface treatment agent, the inorganic corrosion inhibitor, nano particles, the organosilane and the water-based resin are combined organically to form a composite passivating film, so the bonding force of the passivating film and a galvanizedlayer is improved, and the coating performance of the galvanized plate subjected to the surface treatment is improved. Nano-silicon dioxide serving as the sealant can be distributed in the passivating film uniformly after being modified to improve the compactness of a film layer, so the decay resistance of the film layer is improved. The water-based surface treatment agent does not contain chromium with any valence state, and is environmentally-friendly, the pretreatment process is simple, and the requirement of a color coating process can be met.

Description

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AI Technical Summary

Benefits of technology

This patented technology combines different materials together with specific chemicals into one complex composition called a special type material (SPM). These compositions have improved properties such as adhesion or protection against damage caused by environmental factors like rainwater. They may include various types of metal particles, polymers, solvents, oils, etc., which help prevent rust on colored coatings made from zinc plated steel plate. Additionally, they use certain compounds containing sulfur atoms instead of chlorine gas during modification processes to enhance their ability to bind strongly onto surfaces without damaging them. Overall these technical means aimed at create durable protective films while minimizing harmful pollution emissions associated therewith.

Problems solved by technology

Technological Problem addressed in this patents relates to developing new methods for treating metalliferous surfaces like those exposed during manufacturing processes. Current solutions involve applying chemical products onto these surfaces followed by heat curling techniques or sand blast cleaning. There may also include traditional aqua-lamination process involving immersion into hot plunger baths filled with nitric acid and sulfur dioxyl gas. Additionally, some companies offer special ways to protect themselves against harmful environments caused by hydrogen ion release. Overall, current technical problem highlighted in this field includes finding better alternatives for reducing pollutant levels associated with wastewater disposals systems.