Conductive shielding flame-retardant sheet for computer power supply mainboard

Abstract

The utility model discloses a conductive shielding flame-retardant sheet for a computer power supply mainboard, which comprises a double-faced adhesive tape, a first flame-retardant insulating film, a copper foil double-faced adhesive tape, a second flame-retardant insulating film, a first silica gel protective film, a second silica gel protective film and a third silica gel protective film, and the third silica gel protective film is provided with the first silica gel protective film and the second silica gel protective film. A second flame-retardant insulating film is arranged on the first silica gel protective film and the second silica gel protective film, a copper foil double-faced adhesive tape is arranged on the second flame-retardant insulating film, a first flame-retardant insulating film is arranged on the copper foil double-faced adhesive tape, a double-faced adhesive tape is arranged on the first flame-retardant insulating film, and a release film is arranged on the double-faced adhesive tape. By designing the copper foil double faced adhesive tape, the conductive and shielding performance of the product is improved, the first flame-retardant insulating film and the second flame-retardant insulating film are compounded together through the copper foil double faced adhesive tape, the flame-retardant and insulating performance of the product is improved, the attaching flatness is high, the attaching accuracy is high, and the copper foil double faced adhesive tape is suitable for popularization and application in the field of computer power supply mainboards.

Description

TECHNICAL FIELD

[0001] The utility model belongs to computer technical field, concretely relates to a kind of electrically-conductive shielding flame-retardant sheet for computer power supply mainboard. BACKGROUND

[0002] With the high-speed development of electronic information technology, computer is also more and more widely used in various fields. Power supply mainboard is an important component of computer, which can provide the required power for computer, and more importantly, it is the connection center of all hardware devices inside the computer, connecting various devices such as processor, hard disk, memory, graphics card, network card, and managing their communication and cooperation.

[0003] At present, the existing computer power supply mainboard basically only meets the insulation and flame-retardant performance, cannot meet the electrically-conductive shielding performance, and many bubbles are generated when attaching, and the attachment is poor. CONTENT OF THE UTILITY MODEL

[0004] To solve the technical problems existing in the prior art, the purpose of the utility model is to provide an electrically-conductive shielding flame-retardant sheet for computer power supply mainboard.

[0005] To achieve the above purpose and achieve the above technical effect, the utility model adopts the following technical scheme:

[0006] An electrically-conductive shielding flame-retardant sheet for computer power supply mainboard includes a compatible double-sided adhesive, a first flame-retardant insulating film, a copper foil double-sided adhesive, a second flame-retardant insulating film, a first silica gel protective film, a second silica gel protective film and a third silica gel protective film. The third silica gel protective film is provided with a first silica gel protective film and a second silica gel protective film. The first silica gel protective film and the second silica gel protective film are provided with a second flame-retardant insulating film. The second flame-retardant insulating film is provided with a copper foil double-sided adhesive. The copper foil double-sided adhesive is provided with a first flame-retardant insulating film. The first flame-retardant insulating film is provided with a double-sided adhesive. The double-sided adhesive is provided with a release film.

[0007] Further, the double-sided adhesive and the first flame-retardant insulating film have the same shape, and the opposite ends of the double-sided adhesive and the first flame-retardant insulating film are provided with a first step and a second step.

[0008] Further, one end of the copper foil double-sided adhesive is provided with a first step, and the same positions of the copper foil double-sided adhesive, the second flame-retardant insulating film and the first silica gel protective film are provided with a protrusion groove.

[0009] Further, the second flame-retardant insulating film includes a first divided part, a second divided part and a third divided part. The first divided part and the second divided part are compatible with the copper foil double-sided adhesive and the second silica gel protective film. The third divided part is provided with a protrusion groove, and the third divided part is compatible with the copper foil double-sided adhesive and the first silica gel protective film.

[0010] Further, the third silica gel protective film is provided with a plurality of positioning holes and square grooves, the square grooves are matched with the copper foil double-sided adhesive tape, the second flame-retardant insulating film and the bump groove on the first silica gel protective film, and the third silica gel protective film is provided with a pull ear.

[0011] Further, the thicknesses of the first flame-retardant insulating film and the second flame-retardant insulating film are 0.05-1mm respectively, and the flame-retardant grade is UL94 VTM-0.

[0012] Further, the thickness of the copper foil double-sided adhesive tape is 0.04-0.06mm, the adhesion is >=1200gf, the surface impedance is <=50mΩ, and the vertical impedance is <=50mΩ.

[0013] Further, the thickness of the first silica gel protective film is 0.06+ / -0.004mm, and the adhesion is 10-15g / 25mm.

[0014] Further, the thickness of the second silica gel protective film is 0.045-0.05mm, and the adhesion is 1-3g / 25mm.

[0015] Further, the thickness of the third silica gel protective film is 0.055-0.065mm, and the adhesion is 20-30g / in.

[0016] Compared with the prior art, the present application has the following beneficial effects:

[0017] The utility model discloses a conductive shielding flame -retardant sheet for computer power supply mainboard, through design copper foil double -sided adhesive tape, improve the conductive performance and shielding performance of product, through design copper foil double -sided adhesive tape with first flame -retardant insulating film and second flame -retardant insulating film compound together, improve the mechanical property, forming property, flame -retardant property and insulating property of product, the second flame -retardant insulating film is divided into first split part, second split part and third split part, make first split part, second split part with second silica gel protective film adaptation and make third split part with first silica gel protective film adaptation, improve the adhesion of product and computer power supply mainboard, make the attachment more level, through with first silica gel protective film, second silica gel protective film and third silica gel protective film compound, realize in removing third silica gel protective film with first silica gel protective film and second silica gel protective film, do not leave residual glue, through design square groove realizes the bending adhesion of copper foil double -sided adhesive tape, second flame -retardant insulating film, first silica gel protective film, improves the adhesion level, through design positioning hole improves the attachment accuracy, overall structure, function diversification has excellent conductive, shielding, flame -retardant effect, is suitable for promoting application in the field of computer power supply mainboard. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the explosion map of the utility model. Detailed Implementation

[0019] The present invention will now be described in detail so that its advantages and features can be more easily understood by those skilled in the art, thereby providing a clearer and more definite definition of the scope of protection of the present invention.

[0020] The following provides a brief overview of one or more aspects to offer a basic understanding of them. This overview is not an exhaustive summary of all conceived aspects, nor is it intended to identify key or decisive elements of all aspects, nor to define the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form to prepare for the more detailed descriptions that follow.

[0021] like Figure 1 As shown, a conductive shielding flame-retardant sheet for a computer power supply motherboard includes a matching double-sided adhesive 1, a first flame-retardant insulating film 2, a copper foil double-sided adhesive 3, a second flame-retardant insulating film 4, a first silicone protective film 5, a second silicone protective film 6, and a third silicone protective film 7. The third silicone protective film 7 has the first silicone protective film 5 and the second silicone protective film 6 disposed on it. The first silicone protective film 5 and the second silicone protective film 6 have the second flame-retardant insulating film 4 disposed on it. The second flame-retardant insulating film 4 has the copper foil double-sided adhesive 3 disposed on it. The copper foil double-sided adhesive 3 has the first flame-retardant insulating film 2 disposed on it. The first flame-retardant insulating film 2 has the double-sided adhesive 1 disposed on it. The double-sided adhesive 1 has a release film disposed on it.

[0022] The double-sided adhesive 1 has the same shape as the first flame-retardant insulating film 2. The two opposite edges of the double-sided adhesive 1 and the first flame-retardant insulating film 2 are provided with a first step 8 and a second step 9.

[0023] The copper foil double-sided adhesive 3 has a first step 8 at one edge, and the position of the first step 8 on the copper foil double-sided adhesive 3 is the same as the position of the first step 8 on the double-sided adhesive 1 and the first flame-retardant insulating film 2.

[0024] The copper foil double-sided adhesive 3, the second flame-retardant insulating film 4, and the first silicone protective film 5 are all provided with protrusion grooves 10 at the same positions.

[0025] The second flame-retardant insulating film 4 includes a first segment 41, a second segment 42 and a third segment 43. The first segment 41 and the second segment 42 are both adapted to the copper foil double-sided adhesive 3 and the second silicone protective film 6. The third segment 43 is provided with a protrusion groove 10 and is adapted to the copper foil double-sided adhesive 3 and the first silicone protective film 5.

[0026] The third silica gel protective film 7 is provided with a pull ear 71, and a square groove 72 is formed in the third silica gel protective film 7, the square groove 72 is matched with the copper foil double-sided adhesive tape 3, the second flame-retardant insulating film 4 and the protruding block groove 10 of the first silica gel protective film 5, the design of the square groove 72 is beneficial to the bending and pasting of the copper foil double-sided adhesive tape 3, the second flame-retardant insulating film 4 and the first silica gel protective film 5, and a plurality of positioning holes 73 are formed in the third silica gel protective film 7, and the design of the positioning holes 73 can facilitate positioning and assembly.

[0027] The double-sided adhesive tape 1 is SH-98105, transparent, 0.05mm in thickness, and has a viscosity of >0.725N / mm, which is better than that of conventional double-sided adhesive tapes with the same thickness.

[0028] The first flame-retardant insulating film 2 and the second flame-retardant insulating film 4 are both PC BWFRFO-AF01, black, 0.05-1mm in thickness, and have a UL94 VTM-0 flame-retardant grade, and are both polycarbonate flame-retardant insulating films, which meet the RoHS, REACH and PFAS specifications, have dimensional stability, and have good mechanical properties, forming properties, flame-retardant properties and insulating properties.

[0029] The copper foil double-sided adhesive tape 3 is BYH-DC1050, copper-colored, 0.04-0.06mm in thickness, has a viscosity of >1200gf, a surface impedance of <50mΩ and a vertical impedance of <50mΩ, and has excellent conductive properties and excellent grounding and EMI shielding properties.

[0030] The first silica gel protective film 5 is S5012L-38B, blue, 0.06±0.004mm in thickness, has a viscosity of 10-15g / 25mm, and has a sticky upper surface, stable viscosity, and will not damage the surface of the second flame-retardant insulating film 4 or generate residual glue when the protective film is removed.

[0031] The second silica gel protective film 6 is HWGT5003A, white, 0.045-0.05mm in thickness, has a viscosity of 1-3g / 25mm, and has a sticky upper surface, stable viscosity, a release function, and facilitates peeling from the copper foil double-sided adhesive tape 3, and fills gaps to make the attachment more flat.

[0032] The third silica gel protective film 7 is TR-5001-HG blue, blue, 0.055-0.065mm in thickness, has a viscosity of 20-30g / in, and has a sticky upper surface, stable viscosity, and can remove the first silica gel protective film 5 and the second silica gel protective film 6 at the same time when the protective film is removed.

[0033] The working principle of the utility model is as follows:

[0034] In use, take the pull ear 71 on the third silica gel protective film 7, take the product off the whole page release film, use the positioning hole 73 to position the product to the corresponding position, and then remove the third silica gel protective film 7, taking away the first silica gel protective film 5 and the second silica gel protective film 6.

[0035] Embodiment 1

[0036] As Figure 1 shown, a conductive shielding flame-retardant sheet for a computer power supply mainboard comprises a compatible double-sided adhesive 1, a first flame-retardant insulating film 2, a copper foil double-sided adhesive 3, a second flame-retardant insulating film 4, a first silica gel protective film 5, a second silica gel protective film 6, and a third silica gel protective film 7, wherein the third silica gel protective film 7 is provided with the first silica gel protective film 5 and the second silica gel protective film 6, the first silica gel protective film 5 and the second silica gel protective film 6 are provided with the second flame-retardant insulating film 4, the second flame-retardant insulating film 4 is provided with the copper foil double-sided adhesive 3, the copper foil double-sided adhesive 3 is provided with the first flame-retardant insulating film 2, the first flame-retardant insulating film 2 is provided with the double-sided adhesive 1, and the double-sided adhesive 1 is provided with a release film.

[0037] The double-sided adhesive 1 and the first flame-retardant insulating film 2 are the same shape, and the opposite ends of the double-sided adhesive 1 and the first flame-retardant insulating film 2 are provided with a first step 8 and a second step 9.

[0038] The copper foil double-sided adhesive 3 is provided with a first step 8 at one end, and the position of the first step 8 on the copper foil double-sided adhesive 3 is the same as that of the first step 8 on the double-sided adhesive 1 and the first flame-retardant insulating film 2.

[0039] The same positions of the copper foil double-sided adhesive 3, the second flame-retardant insulating film 4, and the first silica gel protective film 5 are provided with a protrusion groove 10.

[0040] The second flame-retardant insulating film 4 comprises a first divided part 41, a second divided part 42, and a third divided part 43, the first divided part 41 and the second divided part 42 are compatible with the copper foil double-sided adhesive 3 and the second silica gel protective film 6, the third divided part 43 is provided with a protrusion groove 10, and the third divided part 43 is compatible with the copper foil double-sided adhesive 3 and the first silica gel protective film 5.

[0041] The third silica gel protective film 7 is provided with a pull ear 71, and a square groove 72 is provided on the third silica gel protective film 7, which is compatible with the protrusion groove 10 on the copper foil double-sided adhesive 3, the second flame-retardant insulating film 4, and the first silica gel protective film 5, and the design of the square groove 72 is conducive to the bending and fitting of the copper foil double-sided adhesive 3, the second flame-retardant insulating film 4, and the first silica gel protective film 5, and three positioning holes 73 are also provided on the third silica gel protective film 7, which can be more convenient for positioning and assembling.

[0042] The double-sided adhesive 1 is model SH-98105, transparent, 0.05mm thick, and has a tackiness of >0.725N / mm, which is better than that of a conventional double-sided adhesive of the same thickness.

[0043] The first and second flame-retardant insulating films 2 and 4 are both model PC BWFRFO-AF01, black, 0.05mm thick, and have a flame-retardant rating of UL94 VTM-0. The first and second flame-retardant insulating films 2 and 4 are both polycarbonate flame-retardant insulating films that meet RoHS, REACH, and PFAS specifications, have dimensional stability, and have good mechanical properties, molding properties, flame-retardant properties, and insulating properties.

[0044] The copper foil double-sided adhesive 3 is model BYH-DC1050, copper-colored, 0.04mm thick, has a tackiness of >1200gf, a surface impedance of <50mΩ, and a vertical impedance of <50mΩ, and has excellent conductive properties and excellent grounding and EMI shielding properties.

[0045] The first silicone protective film 5 is model S5012L-38B, blue, 0.06mm thick, has a tackiness of 10g / 25mm, and has a tackiness-stable adhesive surface facing up, and does not damage the surface of the second flame-retardant insulating film 4 or leave adhesive residue when the protective film is removed.

[0046] The second silicone protective film 6 is model HWGT5003A, white, 0.05mm thick, has a tackiness of 2g / 25mm, and has a tackiness-stable adhesive surface facing up, has a release function, and facilitates peeling from the copper foil double-sided adhesive 3 while filling gaps and making the attachment more even.

[0047] The third silicone protective film 7 is model TR-5001-HG blue, blue, 0.055mm thick, has a tackiness of 20g / in, and has a tackiness-stable adhesive surface facing up, and can remove the first and second silicone protective films 5 and 6 at the same time when the protective film is removed.

[0048] The working principle of the utility model is as follows:

[0049] In use, the pull ear 71 on the third silicone protective film 7 is taken, the product is removed from the release film, the product is attached to the corresponding position using the positioning hole 73, and then the third silicone protective film 7 is removed, taking the first and second silicone protective films 5 and 6 with it.

[0050] Parts or structures not specifically described in the utility model can be implemented using existing technology or existing products, and will not be described again here.

[0051] The above merely illustrates the embodiments of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent process transformation, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A conductive shielding flame-retardant sheet for a computer power supply main board, characterized by, The double-sided adhesive tape, the first flame-retardant insulating film, the copper foil double-sided adhesive tape, the second flame-retardant insulating film, the first silica gel protective film, the second silica gel protective film and the third silica gel protective film are matched, the first silica gel protective film and the second silica gel protective film are arranged on the third silica gel protective film, the second flame-retardant insulating film is arranged on the first silica gel protective film and the second silica gel protective film, the copper foil double-sided adhesive tape is arranged on the second flame-retardant insulating film, the first flame-retardant insulating film is arranged on the copper foil double-sided adhesive tape, the double-sided adhesive tape is arranged on the first flame-retardant insulating film, and the release film is arranged on the double-sided adhesive tape.

2. The conductive shielding and flame-retardant sheet for a computer power supply main board according to claim 1, wherein The double-sided adhesive tape and the first flame-retardant insulating film are of the same shape, and the double-sided adhesive tape and the first flame-retardant insulating film are provided with a first step and a second step at opposite ends of the edges.

3. The conductive shielding and flame-retardant sheet for a computer power supply main board according to claim 1, wherein The copper foil double-sided adhesive tape is provided with a first step at one end of the edge, and the copper foil double-sided adhesive tape, the second flame-retardant insulating film and the first silica gel protective film are provided with a protruding block groove at the same position.

4. The conductive shielding and flame-retardant sheet for a main board of a computer power supply according to claim 1, wherein The second flame-retardant insulating film comprises a first split part, a second split part and a third split part, the first split part and the second split part are matched with the copper foil double-sided adhesive tape and the second silica gel protective film, the third split part is provided with a protruding block groove, and the third split part is matched with the copper foil double-sided adhesive tape and the first silica gel protective film.

5. The conductive shielding and flame-retardant sheet for a computer power supply main board according to claim 1, wherein The third silica gel protective film is provided with a plurality of positioning holes and square grooves, the square grooves are matched with the protruding block grooves on the copper foil double-sided adhesive tape, the second flame-retardant insulating film and the first silica gel protective film, and the third silica gel protective film is provided with a pull ear.

6. The conductive shielding and flame-retardant sheet for a computer power supply main board according to claim 1, wherein The thicknesses of the first flame-retardant insulating film and the second flame-retardant insulating film are 0.05-1mm, and the flame-retardant grade is UL94VTM-0.

7. The conductive shielding and flame-retardant sheet for a computer power supply main board according to claim 1, wherein The thickness of the copper foil double-sided adhesive tape is 0.04-0.06mm, the viscosity is >=1200gf, the surface impedance is <=50mΩ, and the vertical impedance is <=50mΩ.

8. The conductive shielding and flame-retardant sheet for a computer power supply main board according to claim 1, wherein The thickness of the first silica gel protective film is 0.06+ / -0.004mm, and the viscosity is 10-15g / 25mm.

9. The conductive shielding and flame-retardant sheet for a computer power supply main board according to claim 1, wherein The thickness of the second silica gel protective film is 0.045-0.05mm, and the viscosity is 1-3g / 25mm.

10. The conductive shielding and flame-retardant sheet for a computer power supply main board according to claim 1, wherein The thickness of the third silica gel protective film is 0.055-0.065mm, and the viscosity is 20-30g / in.

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