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CN-121976268-A - Zinc-plating additive and preparation method and application thereof

CN121976268ACN 121976268 ACN121976268 ACN 121976268ACN-121976268-A

Abstract

The invention relates to a zinc plating additive, a preparation method and application thereof, belonging to the technical field of zinc plating additives; a galvanization additive, which comprises deionized water and zinc chloride, potassium chloride, a gloss agent and a softening agent which are added in the deionized water, wherein the concentration of the zinc chloride is 45-80 g/L, the concentration of the potassium chloride is 160-240 g/L, the concentration of the gloss agent is 0.5-2 mL/L and the concentration of the softening agent is 20-50 mL/L; based on this formulation, the galvanization additive further comprises a synergist added in the deionized water, which comprises 2, 4-thiazolidinedione, inositol, 3- (1-pyridine) -1-propanesulfonic acid sodium salt, polyethylene glycol methacrylic acid phosphate and sodium glutamate, and the concentration of the synergist is 5-11 g/L; the galvanized part with high adhesion strength can be obtained after the matrix to be galvanized is galvanized by using the galvanization additive provided by the invention.

Inventors

  • HE JINYOU

Assignees

  • 广东浩伦环保科技有限公司

Dates

Publication Date
20260505
Application Date
20260205

Claims (10)

  1. 1. The galvanization additive is characterized by comprising deionized water, and zinc chloride, potassium chloride, a gloss agent and a softening agent which are added in the deionized water.
  2. 2. A zinc plating additive according to claim 1, wherein the concentration of zinc chloride in the deionized water is 45-80g/L.
  3. 3. A zinc plating additive according to claim 1, wherein the concentration of potassium chloride in the deionized water is 160-240g/L.
  4. 4. A zinc plating additive according to claim 1, wherein the concentration of the gloss agent in the deionized water is 0.5-2mL/L.
  5. 5. A zinc plating additive according to claim 1, wherein the concentration of the softening agent in the deionized water is 20-50mL/L.
  6. 6. The zinc plating additive according to claim 1, further comprising a synergist added to the deionized water, wherein the synergist comprises 2, 4-thiazolidinedione, inositol, sodium 3- (1-pyridine) -1-propanesulfonate, polyethylene glycol phosphate methacrylate, and sodium glutamate.
  7. 7. A zinc plating additive according to claim 6, wherein the concentration of the synergist in the deionized water is 5-11g/L.
  8. 8. The zinc plating additive according to claim 6, wherein the mass ratio of the 2, 4-thiazolidinedione, the inositol, the sodium 3- (1-pyridine) -1-propane sulfonate, the polyethylene glycol methacrylic acid phosphate and the sodium glutamate is 7.2-7.6:3-4.2:2.5-3:5.4-6:4-4.5.
  9. 9. A method for preparing a zinc coating additive according to any one of claims 1 to 8, characterized in that the method comprises the following steps: s1, adding 50-60% of deionized water into a container, heating and preserving heat to obtain a component A; s2, adding potassium chloride into the component A, and stirring until the potassium chloride is completely dissolved to obtain a component B; S3, adding zinc chloride into the component B, and stirring until the zinc chloride is completely dissolved to obtain a component C; S4, adding the softener after naturally cooling the component C, stirring for 5-10min, adding the gloss agent, stirring for 5-10min, adding the rest deionized water, stirring for 5-20min, finally adding the synergist, and stirring for 5-10min to obtain the galvanized additive.
  10. 10. Use of a galvanising additive according to any of claims 1-8 in galvanising.

Description

Zinc-plating additive and preparation method and application thereof Technical Field The invention belongs to the technical field of zinc plating additives, and particularly relates to a zinc plating additive, and a preparation method and application thereof. Background The galvanization additive is an indispensable composite system in galvanization technology, and is usually compounded by components such as potassium chloride, zinc chloride, gloss agent, softener and the like. The zinc-plating additive can effectively improve the glossiness, flatness, uniformity and corrosion resistance of a zinc-plating layer by reasonably selecting components and optimizing the proportion, and simultaneously inhibit the generation of defects such as scorching, coarse grain, pitting and the like, thereby having an irreplaceable effect in an industrial zinc-plating system. With the wide application of the galvanization technology in multiple fields, the requirements of the industry on the comprehensive performance of the galvanization layer, especially the combination reliability with the matrix are continuously improved, so that the importance of the galvanization additive in improving the adhesion performance of the galvanization layer is increasingly highlighted. The existing zinc plating additives mostly take improvement of appearance and surface quality of a zinc plating layer as core targets, the action mechanism is often concentrated on adjusting the deposition rate of zinc ions and the surface tension of a system, and the adjusting and controlling capability of interface bonding states between the zinc plating layer and a substrate is relatively limited. In the actual galvanizing process, obvious interfacial energy difference and local stress concentration phenomena are easy to form at the initial deposition stage of the galvanized layer, if a galvanized additive cannot effectively interfere an interface structure, a weak bonding interface is extremely easy to form between the galvanized layer and a matrix, so that the problems of peeling, peeling or local desorption and the like of a galvanized part occur during subsequent use or environmental change, and the severe requirements of a high-end scene on the attachment reliability of the galvanized layer are difficult to meet. Disclosure of Invention In view of the above, it is necessary to provide a zinc plating additive, and a preparation method and application thereof, aiming at the technical problems existing in the background art. Specifically, the technical scheme adopted by the invention is as follows: in a first aspect, a galvanization additive includes deionized water and zinc chloride, potassium chloride, a gloss agent, and a softener added to the deionized water. As a preferable technical scheme of the invention, the concentration of the zinc chloride in the deionized water is 45-80g/L. Most preferably, the concentration of the zinc chloride in the deionized water is 60g/L. As a preferable technical scheme of the invention, the concentration of the potassium chloride in the deionized water is 160-240g/L. Most preferably, the concentration of potassium chloride in the deionized water is 220g/L. As a preferable technical scheme of the invention, the concentration of the gloss agent in the deionized water is 0.5-2mL/L. Most preferably, the concentration of the gloss agent in the deionized water is 1mL/L. As a preferable technical scheme of the invention, the concentration of the softening agent in the deionized water is 20-50mL/L. Most preferably, the concentration of the softening agent in the deionized water is 35mL/L. As a preferable technical scheme of the invention, the gloss agent is HL-616B environment-friendly acid zinc gloss agent of Guangdong environment-friendly technology Co. As a preferable technical scheme of the invention, the softener is an HL-616BA environment-friendly acid zinc softener of Guangdong environment-friendly technology Co. As a preferable technical scheme of the invention, the galvanized additive further comprises a synergist added into the deionized water, wherein the synergist comprises 2, 4-thiazolidinedione, inositol, 3- (1-pyridine) -1-propanesulfonic acid sodium salt, polyethylene glycol methacrylic acid phosphate and sodium glutamate. In a certain technical scheme, the concentration of the synergistic agent in the deionized water is 5-11g/L. Most preferably, the concentration of the enhancer in the deionized water is 7.5g/L. In a certain technical scheme, the mass ratio of the 2, 4-thiazolidinedione, the inositol, the 3- (1-pyridine) -1-propane sodium sulfonate, the polyethylene glycol methacrylic acid phosphate and the sodium glutamate is 7.2-7.6:3-4.2:2.5-3:5.4-6:4-4.5. Most preferably, the mass ratio of the 2, 4-thiazolidinedione, the cyclohexanetriol, the sodium 3- (1-pyridine) -1-propane sulfonate, the polyethylene glycol phosphoric acid methacrylate and the sodium glutamate is 7.2:4:3:5.6:4.3. In a second aspect, a m