Antistatic color-coated aluminum coil

Abstract

The utility model discloses an antistatic color-coated aluminum coil, which relates to the technical field of metal coils and comprises an aluminum alloy layer serving as a base material. The pretreatment layer is formed through chromium-free formation treatment; the waterborne epoxy priming coat is sequentially applied to the pretreatment layer; a modified polyester floating coat containing silver nanowires or a conductive polymer to form an effective antistatic conductive path; the nano composite polyester surface coating provides excellent antistatic performance, wear resistance and ultraviolet resistance; the surface charge balance layer is formed by tin oxide used for optimizing charge distribution on the surface of the aluminum coil and neutralizing static charges; according to the utility model, through the silver nanowires added in the modified polyester intermediate coating and the surface charge balance layer formed by the metal tin oxide, the antistatic performance is improved, electrostatic charges can be neutralized, and electrostatic accumulation is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of metal coils, in particular to an antistatic color-coated aluminum coil. Background Art

[0002] Traditional color-coated aluminum coils are widely used in the construction, decoration, and electronics industries because of their light weight, corrosion resistance, and aesthetics. However, traditional color-coated aluminum coils are deficient in antistatic properties, which may cause problems in the packaging of electronic products and the use of precision equipment, such as static electricity accumulation that may damage sensitive electronic components.

[0003] Traditional color-coated aluminum coils have environmental and health issues. Many traditional color-coated aluminum coils use chromium-containing compounds for surface treatment during the production process, which raises issues of environmental pollution and health risks. Similarly, traditional organic solvent-based primers and topcoats also release harmful volatile organic compounds. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes an antistatic color-coated aluminum coil to solve the above-mentioned problem.

[0005] In order to achieve the above purpose, the utility model proposes an antistatic color-coated aluminum coil.

[0006] As a further solution of the utility model:

[0007] An antistatic color-coated aluminum coil, comprising:

[0008] Aluminum alloy as substrate;

[0009] A pre-treatment layer formed by a chromium-free chemical treatment;

[0010] a waterborne epoxy primer applied sequentially over the pretreatment layer;

[0011] Modified polyester midcoat containing silver nanowires or conductive polymers to form an effective antistatic conductive path;

[0012] Nano-composite polyester topcoat provides excellent antistatic, abrasion and UV resistance;

[0013] A special surface charge balancing layer consisting of tin oxide is used to optimize the charge distribution on the aluminum coil surface and neutralize static charges.

[0014] The pretreatment layer adopts zirconium-titanium based chemical formation technology.

[0015] The waterborne epoxy primer has good adhesion and anti-corrosion properties.

[0016] The modified polyester midcoat layer provides a continuous conductive path for dispersing the accumulated static charge through the incorporation of silver nanowires.

[0017] The nanocomposite polyester topcoat has abrasion resistance and UV resistance, as well as antistatic properties.

[0018] The surface charge balance layer is used to form a uniform charge distribution and neutralize the static charge accumulated on the surface of the aluminum coil.

[0019] The method for manufacturing the antistatic color-coated aluminum coil comprises the following steps:

[0020] a) Select aluminum alloy as the substrate and clean it;

[0021] b) performing a chromium-free chemical treatment on the surface of the aluminum alloy to form a pretreatment layer;

[0022] c) coating the pre-treated layer with a water-based epoxy primer to form a base coat, and drying the base coat;

[0023] d) coating a modified polyester paint containing silver nanowires or a conductive polymer on the base coat to form a middle coat, and drying the middle coat;

[0024] e) coating the middle coating with a nano-composite polyester paint to form a top coating, and drying the top coating;

[0025] f) Adding a surface charge balancing layer consisting of metal tin oxide on the top coating.

[0026] Compared with the prior art, the beneficial effects of the utility model are:

[0027] 1. By adding silver nanowires to the modified polyester coating and the surface charge balance layer composed of metal tin oxide, the antistatic performance is improved, static charge can be neutralized, and static electricity accumulation can be reduced.

[0028] 2. The use of chromium-free pretreatment layer reduces the use of harmful substances, and the water-based epoxy primer reduces the use of organic solvents, reducing the impact on the environment and human health. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of the utility model.

[0030] In the figure: 1. Aluminum alloy layer; 2. Pretreatment layer; 3. Water-based epoxy primer; 4. Modified polyester middle coating; 5. Nano-composite polyester top coating; 6. Surface charge balance layer. DETAILED DESCRIPTION

[0031] The technical solution of the utility model will be described clearly and completely in conjunction with the embodiments below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] like Figure 1 As shown, an antistatic color-coated aluminum coil comprises:

[0033] An aluminum alloy layer 1 as a substrate;

[0034] A pre-treatment layer 2 formed by a chromium-free chemical treatment;

[0035] A waterborne epoxy primer layer 3 is sequentially applied on the pretreatment layer;

[0036] A modified polyester middle coating 4 containing silver nanowires or conductive polymers to form an effective antistatic conductive path;

[0037] Nano-composite polyester topcoat 5, providing excellent antistatic, abrasion and UV resistance;

[0038] The surface charge balancing layer 6 is composed of tin oxide for optimizing the charge distribution on the surface of the aluminum coil and neutralizing the static charge.

[0039] The pretreatment layer 2 adopts zirconium-titanium based chemical formation technology.

[0040] Waterborne epoxy primer 3 has good adhesion and anti-corrosion properties.

[0041] The modified polyester midcoat 4 provides a continuous conductive path for dispersing the accumulated static charge through the addition of silver nanowires.

[0042] The nanocomposite polyester topcoat 5 has abrasion resistance and UV resistance, as well as antistatic properties.

[0043] The surface charge balance layer 6 is used to form a uniform charge distribution and neutralize the static charge accumulated on the surface of the aluminum coil.

[0044] A method for manufacturing an antistatic color-coated aluminum coil comprises the following steps:

[0045] a) Select aluminum alloy as the substrate and clean it;

[0046] b) performing a chromium-free chemical treatment on the surface of the aluminum alloy to form a pretreatment layer 2;

[0047] c) coating a water-based epoxy primer on the pre-treated layer 2 to form a base coating 3, and drying the base coating 3;

[0048] d) coating a modified polyester paint containing silver nanowires on the base coat to form a middle coat, and drying the middle coat;

[0049] e) coating the middle coating with a nano-composite polyester paint to form a top coating, and drying the top coating;

[0050] f) Adding a surface charge balancing layer 6 composed of metal tin oxide on the top coating.

[0051] Working principle:

[0052] The substrate is made of aluminum alloy substrate: it provides a solid supporting structure due to the light weight, high strength and good conductivity of aluminum.

[0053] Pretreatment layer 2 uses a chromium-free chemical pretreatment layer: used to improve the adhesion of the coating while providing additional corrosion resistance, avoiding the environmental and health risks of traditional chromium chemistry.

[0054] The base coat adopts water-based epoxy base coat 3: As a base coat, it provides a good adhesion basis for the middle coat and top coat, and also has excellent anti-corrosion properties.

[0055] The middle coating adopts modified polyester middle coating 4: contains silver nanowires, which form an effective antistatic conductive path to help disperse the accumulated static charge.

[0056] Top coating uses nano-composite polyester top coating 5: provides the outermost layer of protection, enhances abrasion resistance and UV resistance, while maintaining good anti-static properties.

[0057] The surface charge balance layer 6 is made of metal tin oxide, which can effectively neutralize static charge and further enhance the antistatic performance by optimizing the charge distribution on the surface of the aluminum coil.

[0058] Material selection: Choose a suitable aluminum alloy as the base material.

[0059] Surface pretreatment: The aluminum alloy substrate is cleaned and then treated using chromium-free chemical treatment technology to form a pretreatment layer.

[0060] Base coat application: Apply water-based epoxy primer evenly on the pretreatment layer to form a base coat and dry it under a controlled environment.

[0061] Middle coating application: A modified polyester paint containing silver nanowires or conductive polymer is applied on the base coating as a middle coating and dried again.

[0062] Application of top coating: Nano-composite polyester paint is applied on the middle coating to form a top coating, which is then dried.

[0063] Addition of surface charge balance layer 6: Adding a surface charge balance layer 6 composed of specific metal tin oxide to the top coating to optimize charge distribution and enhance antistatic performance.

[0064] The above embodiments are only used to illustrate the technical method of the utility model rather than to limit it. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical method of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical method of the utility model.

Claims

1. An antistatic color-coated aluminum coil, characterized in that: include: An aluminum alloy layer (1) as a substrate; A pre-treatment layer (2) formed by a chromium-free chemical treatment; a waterborne epoxy primer (3) applied sequentially on the pretreatment layer; A modified polyester middle coating (4) containing silver nanowires or conductive polymers to form an effective antistatic conductive path; Nanocomposite polyester topcoat (5) provides excellent antistatic, abrasion and UV resistance; The surface charge balancing layer (6) is composed of tin oxide for optimizing the charge distribution on the surface of the aluminum coil and neutralizing the static charge.

2. The antistatic color-coated aluminum coil according to claim 1, characterized in that: The pretreatment layer (2) is formed using zirconium-titanium based chemical technology.

3. The antistatic color-coated aluminum coil according to claim 2, characterized in that: The waterborne epoxy primer (3) has good adhesion and anti-corrosion properties.

4. The antistatic color-coated aluminum coil according to claim 3, characterized in that: The modified polyester midcoat layer (4) provides a continuous conductive path for dispersing the accumulated static charge through the addition of silver nanowires.

5. The antistatic color-coated aluminum coil according to claim 4, characterized in that: The nano-composite polyester surface coating (5) has wear resistance and UV resistance, as well as anti-static properties.

6. The antistatic color-coated aluminum coil according to claim 5, characterized in that: The surface charge balance layer (6) is used to form a uniform charge distribution and neutralize the static charge accumulated on the surface of the aluminum coil.

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