Preparation process of an electronic component coated with elastic paint

Abstract

The present invention discloses an electronic component coated with elastic paint and its preparation process, which includes an electronic component body and two metal pins. One metal pin is provided at each end of the electronic component body. A first elastic paint layer is coated on the outer surface of the electronic component body, and a second elastic paint layer is coated on the outer surface of the metal pin. The preparation process of the electronic component coated with elastic paint includes the following steps: S1, prepare elastic paint; S2, coat the electronic component with elastic paint; S3, cure. By coating elastic paint layers on the electronic component body and the metal pins, the elastic paint layers can play roles of insulating protection, anti-corrosion, voltage resistance and flame retardance for the electronic component; the elastic paint is coated on the electronic component by roller coating or spraying, which is simple in processing, omits the cumbersome process of sleeving heat shrinkable tube sleeves, and improves the production efficiency of the electronic component; moreover, the coated elastic paint has low cost, can reduce the production cost of the enterprise and improve economic benefits.

Description

Technical Field

[0001] The present invention relates to the field of electronic components, and particularly to an electronic component coated with elastic paint and a preparation process thereof. Background Art

[0002] An electronic component is a basic element in an electronic circuit. Electronic components must be connected to each other to form an electronic circuit with a specific function, such as an amplifier, a radio receiver, an oscillator, etc. One of the common ways to connect electronic components is to solder them to a PCB board.

[0003] In the prior art, to prevent the metal pins of an electronic component from being exposed, generally a heat shrinkable tube sleeve needs to be sleeved on the metal pins and the electronic component body to achieve the functions of insulation and moisture protection, and to avoid short circuits in the circuit caused by accidental contact with other electronic components. By using the heat shrinkable tube sleeve method, the processing method is cumbersome. After the heat shrinkable tube sleeve is sleeved on the electronic component, heating is required to make the heat shrinkable tube sleeve shrink and clamp on the electronic component. This will not only reduce the production efficiency of the enterprise, but also the cost of the heat shrinkable tube sleeve is relatively high, increasing the production cost of the enterprise. At the same time, when the heating temperature of the heat shrinkable tube sleeve does not meet the requirements, the shrinkage force of the heat shrinkable tube sleeve will be insufficient, resulting in a reduction in the processing accuracy of the heat shrinkable tube sleeve and easy loosening. In addition, the anti-corrosion performance, flame retardancy and voltage withstand level of the heat shrinkable tube sleeve are all lacking. When used in a working condition with a relatively harsh use environment, the electronic component is prone to corrosion, thus affecting the normal use of the electronic device.

[0004] Therefore, there are defects in the prior art and improvement is needed. Summary of the Invention

[0005] The technical problem to be solved by the present invention is: to provide an electronic component coated with elastic paint and a preparation process thereof, which have low manufacturing cost, high production efficiency, high anti-corrosion property, high voltage withstand level and a flame retardant function.

[0006] The technical solution of the present invention is as follows: an electronic component coated with elastic paint, including an electronic component body and two metal pins. One metal pin is provided at each end of the electronic component body. The outer surface of the electronic component body is coated with a first elastic paint layer, and the outer surface of the metal pin is coated with a second elastic paint layer. The left and right ends of the first elastic paint layer are respectively combined with the inner ends of the second elastic paint layer.

[0007] Adopting the above technical solution, in the electronic component coated with elastic paint, the transverse length of the second elastic paint layer is less than the length of the metal pin.

[0008] Adopting each of the above technical solutions, in the electronic component coated with elastic paint, the first elastic paint layer and the second elastic paint layer are both synthetic resin elastic paint layers.

[0009] With the above technical solutions, in the electronic component coated with elastic paint, the hardness of the first elastic paint layer and the second elastic paint layer is 1H to 5B.

[0010] With the above technical solutions, in the electronic component coated with elastic paint, a color ring coating for identifying the capacitance of the electronic component body is further provided on the outer surface of the first elastic paint layer.

[0011] With the above technical solutions, in the electronic component coated with elastic paint, the electronic component body is one of a resistor, a capacitor or an inductor.

[0012] The present invention also provides a preparation process for the above electronic component coated with elastic paint, and the specific technical solution is as follows:

[0013] A preparation process for an electronic component coated with elastic paint includes the following steps:

[0014] S1. Prepare elastic paint: The raw material components and weight ratios of the elastic paint are as follows:

[0015]

[0016] Pour the silicone resin and the solvent in the above raw materials into a blender in sequence for stirring, the stirring speed is 700 - 1100 r / min, the stirring time is 40 - 50 min. After it is completely dissolved, add titanium dioxide, mica powder and calcium carbonate, and continue to stir at this speed for 10 - 20 min, then add a flame retardant and a color paste, and stir and disperse them evenly to obtain the required elastic paint;

[0017] S2. Coat the electronic component with elastic paint: Coat an elastic paint layer on the surfaces of the electronic component body and the metal pins respectively by means of roll coating or spraying, and dry at room temperature for 3 - 4 h;

[0018] S3. Cure: Place the electronic component in step S2 in an oven at 50 - 60 °C for curing, the curing time is 20 - 40 min, then continue to heat up to 65 - 70 °C for curing for 20 - 30 min. After naturally cooling to room temperature, take it out to obtain an electronic component with an elastic paint coated on its surface.

[0019] Preferably, the raw material components and weight ratios of the elastic paint are as follows:

[0020]

[0021] Preferably, the color paste is one of a black color paste, a white color paste or a gray color paste.

[0022] Preferably, the elastic paint further includes a curing agent and a thinner, and the weight ratio of the curing agent to the thinner is: 2 to 6 parts of the curing agent and 15 to 20 parts of the thinner.

[0023] By adopting the above technical solutions, in the present invention, elastic paint layers are respectively coated on the electronic component body and the metal pins. The elastic paint layers can play an insulating and protective role for the electronic components, prevent short circuits of the electronic components on the PCB board, and improve the use stability of the PCB board; mica powder and a flame retardant are added in the preparation of the elastic paint, which can effectively improve the high temperature resistance and flame retardancy of the electronic components, prevent spontaneous combustion of the electronic components due to failures, and improve their use safety. The silicone resin and calcium carbonate added in the elastic paint can improve the elasticity and stability of the metal pins, prevent breakage of the metal pins during the bending process; in addition, the elastic paint layer is directly coated on the electronic components, the processing is simple, the cumbersome process of sleeving heat shrinkable tube sleeves is omitted, and the production efficiency of the electronic components is effectively improved; moreover, the coated elastic paint has a low cost, can reduce the production cost of enterprises, and improve economic benefits; compared with the method of directly sleeving heat shrinkable tube sleeves on the electronic components, the present invention has beneficial effects such as convenient processing, material saving, low production cost and high production efficiency, and can be widely used. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic diagram of the overall structure of the electronic component of the present invention;

[0025] Figure 2 is a schematic side view of the electronic component of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] Example 1

[0028] As Figure 1 and Figure 2As shown, an electronic component coated with elastic paint includes an electronic component body 10 and two metal pins 20. One metal pin 20 is provided at each end of the electronic component body 10. A first elastic paint layer 31 is coated on the outer surface of the electronic component body 10, and a second elastic paint layer 32 is coated on the outer surface of the metal pin 20. The left and right ends of the first elastic paint layer 31 are respectively combined with the inner ends of the second elastic paint layer 32. In this embodiment, the elastic paint layer coated on the electronic component body 10 and the metal pin 20 can play the roles of insulating protection, anti-corrosion, voltage resistance and flame retardancy for the electronic component, prevent the electronic component from being damaged on the PCB board, and improve the use stability of the PCB board. In addition, the elastic paint layer is directly coated on the electronic component, which is simple to process, eliminates the cumbersome process of sleeving a heat shrink tube, and effectively improves the production efficiency of the electronic component; moreover, the coated elastic paint layer has a low cost, can reduce the production cost of the enterprise, and improve the economic benefit; compared with the method of directly sleeving a heat shrink tube on the electronic component, it has the beneficial effects of convenient processing, material saving, low production cost and high production efficiency.

[0029] Further, the transverse length of the second elastic paint layer 32 is less than the length of the metal pin 20. In this embodiment, the transverse length of the second elastic paint layer 32 is less than the length of the metal pin 20, that is, uncoated areas of the second elastic paint layer 32 are provided at the outer ends of the two metal pins 20 respectively. Such a setting can facilitate the user to weld the metal pin 20 on the PCB board.

[0030] Further, both the first elastic paint layer 31 and the second elastic paint layer 32 are synthetic resin elastic paint layers. In this embodiment, the synthetic resin elastic paint layer has good toughness and prevents the metal pin 20 from being broken during the bending process.

[0031] Further, the hardness of the first elastic paint layer 31 and the second elastic paint layer 32 is 1H to 5B. In this embodiment, the hardness of the first elastic paint layer 31 and the second elastic paint layer 32 is 1H. The first elastic paint layer 31 and the second elastic paint layer 32 with a hardness of 1H have a relatively large surface hardness, which can improve the compressive strength of the electronic component.

[0032] Further, a color ring coating for identifying the capacitance of the electronic component body is further provided on the outer surface of the first elastic paint layer 31.

[0033] Further, the electronic component body 10 is one of a resistor, a capacitor or an inductor. In this embodiment, the electronic component body 10 is an inductor.

[0034] Specifically, the preparation process of the electronic component coated with elastic paint is as follows:

[0035] S1. Prepare elastic paint: The raw material components and weight ratios of the elastic paint are:

[0036]

[0037] Pour the silicone resin and solvent in the above raw materials into a blender in sequence for stirring. The stirring speed is 700 - 1100 r / min, and the stirring time is 40 - 50 min. After it is completely dissolved, add titanium dioxide, mica powder and calcium carbonate, and continue to stir at this speed for 10 - 20 min. Then add the flame retardant and color paste, and stir and disperse them evenly to obtain the required elastic paint. In this embodiment, preferably, the stirring speed is 700 r / min and the stirring time is 50 min.

[0038] S2. Coating the electronic component with elastic paint: Adopt the method of roller coating or spraying to respectively coat an elastic paint layer on the surfaces of the electronic component body 10 and the metal pin 20, and dry it at room temperature for 3 - 4 h. In this embodiment, preferably, dry it at room temperature for 3 h.

[0039] S3. Curing: Place the electronic component in step S2 in an oven at 50 - 60 °C for curing. The curing time is 20 - 40 min, then continue to heat up to 65 - 70 °C for curing for 20 - 30 min. After naturally cooling to room temperature, take it out to obtain the electronic component with an elastic paint coated on its surface. In this embodiment, preferably, cure it in an oven at 50 °C for 40 min, then continue to heat up to 65 °C for curing for 30 min.

[0040] Further, the raw material components and weight ratio of the elastic paint are:

[0041]

[0042] In this embodiment, preferably, the raw material components and weight ratio of the elastic paint are:

[0043]

[0044] Further, the color paste is one of black color paste, white color paste or gray color paste. In this embodiment, the color paste is black color paste.

[0045] Further, the elastic paint further includes a curing agent and a diluent. The weight ratio of the curing agent and the diluent is: 2 - 6 parts of the curing agent and 15 - 20 parts of the diluent. In this embodiment, the weight ratio of the curing agent and the diluent is: 2 parts of the curing agent and 15 parts of the diluent.

[0046] Example 2

[0047] As Figure 1 and Figure 2As shown in the figure, an electronic component coated with elastic paint includes an electronic component body 10 and two metal pins 20. One metal pin 20 is provided at each end of the electronic component body 10. A first elastic paint layer 31 is coated on the outer surface of the electronic component body 10, and a second elastic paint layer 32 is coated on the outer surface of the metal pin 20. The left and right ends of the first elastic paint layer 31 are respectively combined with the inner ends of the second elastic paint layer 32. In this embodiment, the elastic paint layer coated on the electronic component body 10 and the metal pin 20 can play the roles of insulating protection, anti-corrosion, voltage resistance and flame retardance for the electronic component, prevent the electronic component from being damaged on the PCB board, and improve the use stability of the PCB board. In addition, the elastic paint layer is directly coated on the electronic component, and the processing is simple, which saves the cumbersome process of sleeving a heat shrinkable tube sleeve, effectively improves the production efficiency of the electronic component; moreover, the coated elastic paint layer has a low cost, can reduce the production cost of the enterprise, and improve the economic benefit; compared with the method of directly sleeving a heat shrinkable tube sleeve on the electronic component, it has the beneficial effects of convenient processing, material saving, low production cost and high production efficiency.

[0048] Further, the transverse length of the second elastic paint layer 32 is less than the length of the metal pin 20. In this embodiment, the transverse length of the second elastic paint layer 32 is less than the length of the metal pin 20, that is, uncoated areas of the second elastic paint layer 32 are respectively provided at the outer ends of the two metal pins 20. Such a setting can facilitate the user to weld the metal pin 20 on the PCB board.

[0049] Further, both the first elastic paint layer 31 and the second elastic paint layer 32 are synthetic resin elastic paint layers. In this embodiment, the synthetic resin elastic paint layer has good toughness, which prevents the metal pin 20 from being broken during the bending process.

[0050] Further, the hardness of the first elastic paint layer 31 and the second elastic paint layer 32 is 1H to 5B. In this embodiment, the hardness of the first elastic paint layer 31 and the second elastic paint layer 32 is 5B. The surface hardness of the first elastic paint layer 31 and the second elastic paint layer 32 with a hardness of 5B is relatively small, which can improve the anti-deformation ability of the electronic component. It should be noted that when the hardness of the first elastic paint layer 31 and the second elastic paint layer 32 is 5B, their elongation ratios are 100% to 200%.

[0051] Further, a color ring coating for identifying the capacitance of the electronic component body is further provided on the outer surface of the first elastic paint layer 31.

[0052] Further, the electronic component body 10 is one of a resistor, a capacitor or an inductor. In this embodiment, the electronic component body 10 is a resistor.

[0053] Specifically, the preparation process of the electronic component coated with elastic paint is as follows:

[0054] S1. Equip with elastic paint: The raw material components and weight ratio of the elastic paint are as follows:

[0055]

[0056] Pour the silicone resin and solvent in the above raw materials into a blender in sequence for stirring. The stirring speed is 700 - 1100 r / min, and the stirring time is 40 - 50 min. After it is completely dissolved, add titanium dioxide, mica powder and calcium carbonate, and continue to stir at this speed for 10 - 20 min. Then add the flame retardant and color paste, and stir and disperse them evenly to obtain the required elastic paint. In this embodiment, preferably, the stirring speed is 1100 r / min and the stirring time is 40 min.

[0057] S2. Coat the electronic component with elastic paint: Use the roller coating or spraying method to respectively coat a layer of elastic paint layer on the surfaces of the electronic component body 10 and the metal pin 20, and dry it at room temperature for 3 - 4 h. In this embodiment, preferably, dry it at room temperature for 4 h.

[0058] S3. Cure: Place the electronic component in step S2 in an oven at 50 - 60 °C for curing. The curing time is 20 - 40 min, then continue to heat up to 65 - 70 °C for curing for 20 - 30 min. After naturally cooling to room temperature, take it out to obtain an electronic component with an elastic paint coated on its surface. In this embodiment, preferably, cure it in an oven at 60 °C, the curing time is 40 min, and then continue to heat up to 70 °C for curing for 20 min.

[0059] Further, the raw material components and weight ratio of the elastic paint are as follows:

[0060]

[0061]

[0062] In this embodiment, preferably, the raw material components and weight ratio of the elastic paint are as follows:

[0063]

[0064] Further, the color paste is one of black color paste, white color paste or gray color paste. In this embodiment, the color paste is gray color paste.

[0065] Further, the elastic paint further includes a curing agent and a diluent. The weight ratio of the curing agent and the diluent is: 2 - 6 parts of the curing agent and 15 - 20 parts of the diluent. In this embodiment, the weight ratio of the curing agent and the diluent is: 6 parts of the curing agent and 20 parts of the diluent.

[0066] By adopting the above technical solutions, in the present invention, elastic paint layers are respectively coated on the electronic component body 10 and the metal pins 20. The elastic paint layers can play an insulating and protective role for the electronic components, prevent the electronic components from short-circuiting on the PCB board, and improve the use stability of the PCB board; mica powder and flame retardants are added in the preparation of the elastic paint, which can effectively improve the high-temperature resistance and flame retardancy of the electronic components, prevent the electronic components from spontaneous combustion due to failures, and improve their use safety. The silicone resin and calcium carbonate added in the elastic paint can improve the elasticity and stability of the metal pins 20, and prevent the metal pins 20 from breaking during the bending process; in addition, the elastic paint layer is directly coated on the electronic components, the processing is simple, the cumbersome process of sleeving heat shrinkable tube sleeves is omitted, and the production efficiency of the electronic components is effectively improved; moreover, the cost of the coated elastic paint is low, which can reduce the production cost of the enterprise and improve the economic benefits; compared with the method of directly sleeving heat shrinkable tube sleeves on the electronic components, the present invention has the beneficial effects of convenient processing, material saving, low production cost and high production efficiency, and can be widely used.

[0067] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A preparation process for an electronic component coated with elastic paint, characterized in that: It includes the following steps: S1. Prepare elastic paint: The raw material components and weight ratios of the elastic paint are as follows: Pour the silicone resin and solvent in the above raw materials into a blender in sequence for stirring. The stirring speed is 700 - 1100 r / min, and the stirring time is 40 - 50 min. After it is completely dissolved, add titanium dioxide, mica powder and calcium carbonate, and continue to stir at this speed for 10 - 20 min. Then add the flame retardant and color paste, and stir and disperse them evenly to obtain the required elastic paint; S2. Coat the electronic component with elastic paint: Use the roll coating or spraying method to respectively coat a layer of elastic paint layer on the surfaces of the electronic component body and the metal pins, and dry at room temperature for 3 - 4 h; S3. Cure: Place the electronic component in step S2 in an oven at 50 - 60 °C for curing. The curing time is 20 - 40 min, then continue to heat up to 65 - 70 °C for curing for 20 - 30 min. After naturally cooling to room temperature, take it out to obtain an electronic component with an elastic paint coated on its surface.

2. The preparation process of the electronic component coated with elastic paint according to claim 1, wherein: The raw material components and weight ratios of the elastic paint are as follows:

3. The preparation process of the electronic component coated with elastic paint according to claim 1, characterized in that: The color paste is one of black color paste, white color paste or gray color paste.

4. The preparation process of the electronic component coated with elastic paint according to claim 1, characterized in that: The elastic paint further includes a curing agent and a diluent. The weight ratio of the curing agent to the diluent is: 2 - 6 parts of curing agent, 15 - 20 parts of diluent.

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