CN115214207A - Lubricating anti-flash base plate and preparation method thereof - Google Patents

Lubricating anti-flash base plate and preparation method thereof Download PDF

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Publication number
CN115214207A
CN115214207A CN202210832675.7A CN202210832675A CN115214207A CN 115214207 A CN115214207 A CN 115214207A CN 202210832675 A CN202210832675 A CN 202210832675A CN 115214207 A CN115214207 A CN 115214207A
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parts
layer
lubricating
coating
agent
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Inventor
朱三云
杨国辉
朱大胜
宋银伟
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Shenzhen Hongyuhui Technology Co ltd
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Shenzhen Hongyuhui Technology Co ltd
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Priority to CN202210832675.7A priority Critical patent/CN115214207A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B21/00—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board
    • B32B21/02—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board the layer being formed of fibres, chips, or particles, e.g. MDF, HDF, OSB, chipboard, particle board, hardboard
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/16—Perforating by tool or tools of the drill type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/10—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of wood
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D171/00—Coating compositions based on polyethers obtained by reactions forming an ether link in the main chain; Coating compositions based on derivatives of such polymers
    • C09D171/02—Polyalkylene oxides
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
    • C09D183/04—Polysiloxanes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/24—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer not being coherent before laminating, e.g. made up from granular material sprinkled onto a substrate
    • B32B2037/243—Coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/06—Coating on the layer surface on metal layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/26—Polymeric coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/536—Hardness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/746—Slipping, anti-blocking, low friction

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Forests & Forestry (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Laminated Bodies (AREA)

Abstract

The invention provides a lubricating anti-burring base plate and a preparation method thereof, wherein the lubricating anti-burring base plate comprises a wood fiberboard, a lubricating layer, an aluminum foil layer and a hardened layer, wherein the lubricating layer, the aluminum foil layer and the hardened layer are sequentially arranged from inside to outside along two sides of the wood fiberboard; wherein the hard coating is an epoxy resin coating or an organic silicon coating. The aluminum foil and the lubricating layer can absorb heat of the drill point to reduce the temperature of the drill point, meanwhile, the lubricating layer can lubricate the drill point to improve the hole wall quality of a drilled hole, the hardening layer can prevent the burr of the bottom plate, and the softer wood fiberboard can reduce the abrasion of the drill point.

Description

Lubricating anti-flash base plate and preparation method thereof
Technical Field
The invention relates to the technical field of PCB drilling, in particular to a lubricating anti-flash base plate and a preparation method thereof.
Background
The board-like pad, which is placed under the circuit board during drilling and is in direct contact with the machine table, is called a pad. In the drilling of circuit board, the backing plate has important influence to the drilling quality, and the important thing requires the backing plate to have the shavings cutting edge of a knife or a sword that can restrain bottom PCB board of very high hardness (SD 80 above), and the protection drill point prevents disconnected needle, avoids the unexpected parking of drilling to cause the drilling accident, wherein, shavings cutting edge of a knife or a sword: in the drilling process of the drilling machine, if the PCB and the backing plate are not tightly attached in the air, the drilling tool generates downward feeding when drilling the PCB, and pushes out the copper sheet, so that burrs are generated. The backing plate is used as the main auxiliary material of PCB drilling, and the purpose is in order to protect the machine mesa and support PCB board bottom plate export, reduces the export and drapes over one's shoulders the cutting edge of a knife or a sword.
With the development of the technology, the drilling of the high-precision circuit board puts forward a new demand on the base plate, the white base plate sold in the current market has high hardness, is easy to deform, is not tightly attached to the bottom PCB, and is easy to produce burrs, and the phenolic aldehyde plate has the advantages of high hardness, high smoothness, high price, serious abrasion to a drill bit, high resin content and easy pollution to the hole wall, and influences on subsequent processes such as copper deposition. And the lubricating backing plate for high-end PCB drilling (more than 20 layers of PCBs) in the market at present is release paper because the surface of the lubricating backing plate protects lubricating materials, so that the surface hardness of the lubricating backing plate is only about 65 +/-5 (Shore hardness), the defect of hardness exists, the bottom plate has a large burr when the PCB is drilled, the working procedure can be performed after the PCB is polished by a manual machine, the situation that no copper exists in an orifice or a hole is plugged in the orifice is easily caused when polishing is not good, a product with hidden quality troubles is scrapped, and the production cost is improved.
Aiming at the defects of the drilling base plate, the base plate which can inhibit the burrs of the PCB bottom plate, lubricate and protect drill pins, improve the quality of hole walls and has the advantage of cost is very necessary to be invented.
Disclosure of Invention
In view of the above, the present invention has been made to provide a lubricating anti-flash mat and a method of making the same that overcome or at least partially address the above-mentioned problems.
In order to solve the above problems, the present invention discloses a lubricating anti-flash backing plate, comprising: the wood fiber board comprises a wood fiber board, a lubricating layer, an aluminum foil layer and a hardening layer, wherein the lubricating layer, the aluminum foil layer and the hardening layer are sequentially arranged from inside to outside along two sides of the wood fiber board; wherein, the hard coating is an epoxy resin coating or an organic silicon coating.
Preferably, the thickness of the wood fiberboard is 1.5-4mm, the thickness of the aluminum foil is 0.05-0.2mm, the thickness of the hardening layer is 0.05-0.2mm, and the thickness of the lubricating layer is 0.05-0.1mm.
Preferably, the hardness of the hardbanding is greater than SD90.
Preferably, the lubricating layer is prepared by mixing three or more than three of ethylene glycol polymer, ethylene oxide polymer, polyvinyl alcohol and polyacrylic acid.
Preferably, the material of the hard layer comprises the following components in parts by weight: 60-85 parts of liquid epoxy resin, 0.3-2 parts of defoaming agent, 0.3-1 part of flatting agent, 2-5 parts of dispersing agent, 7-10 parts of modified polyamine and 10-15 parts of ultrafine powder calcium carbonate or aluminum oxide.
Preferably, the material of the hard layer comprises the following components in parts by weight: 75-90 parts of organic silicon resin, 0.06-1.5 parts of defoaming agent, 0.05-1 part of flatting agent, 2-3 parts of dispersing agent and 40-60 parts of superfine aluminum oxide.
Preferably, the defoaming agent is organic siloxane, the leveling agent is organic siloxane or acrylate, and the dispersing agent is organic polyacid.
The invention also provides a preparation method of the lubricating anti-burring base plate, which comprises the following steps:
preparing a hardened layer coating: weighing 60-85 parts of liquid epoxy resin, 0.3-2 parts of defoaming agent, 0.3-1 part of flatting agent, 2-5 parts of dispersing agent, 7-10 parts of modified polyamine and 10-15 parts of superfine calcium carbonate or aluminum oxide according to parts by weight, fully mixing and stirring, and cooling to room temperature to obtain the epoxy resin coating;
or;
weighing 75-90 parts of organic silicon resin, 0.06-1.5 parts of defoaming agent, 0.05-1 part of flatting agent, 2-3 parts of dispersing agent and 40-60 parts of superfine alumina according to parts by weight, fully mixing and stirring, and cooling to room temperature to obtain the organic silicon coating;
coating a hardening layer: coating the epoxy resin coating or the organic silicon coating on the upper surface of the aluminum coil, and baking at a first preset temperature for a first fixed time to obtain a hardened layer;
coating a lubricating layer: coating a lubricating coating on the lower surface of the aluminum coil, and baking at a second preset temperature for a second fixed time to obtain a lubricating layer;
preparing a base plate: and respectively attaching the lubricating layer of the aluminum coil to two side surfaces of a wood fiberboard, and pressing at a preset pressure and temperature to obtain the base plate.
Preferably, the first preset temperature is 230 ℃, the second preset temperature is 135 ℃, and the preset pressure temperature is 80-110 ℃.
Preferably, the first fixed time and the second fixed time are both 2min.
The invention has the following advantages:
in the embodiment of the application, the lubricating layer, the aluminum foil layer and the hardening layer are sequentially arranged from inside to outside along two sides of the wood fiberboard through the wood fiberboard, the lubricating layer, the aluminum foil layer and the hardening layer; wherein, the hard coating is an epoxy resin coating or an organic silicon coating. The aluminum foil and the lubricating layer can absorb the heat of the drill point to reduce the temperature of the drill point, meanwhile, the lubricating layer can lubricate the drill point to improve the hole wall quality of a drilled hole, the hardened layer can prevent the bottom plate from being draped over, and the softer wood fiberboard can reduce the abrasion of the drill point.
Drawings
FIG. 1 is a schematic view of a lubricating anti-flash backing plate according to an embodiment of the present invention;
FIG. 2 is a flowchart illustrating steps of a method for manufacturing a lubricating anti-flash backing plate according to an embodiment of the present invention.
Description of the drawings: 1. wood fiber board, 2, lubricating layer, 3, aluminum foil layer, 4 and hardening layer.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Referring to fig. 1, fig. 1 is a schematic structural view illustrating a lubricating anti-flash backing plate according to an embodiment of the present invention;
a lubricated flash-preventing backing plate can specifically include:
the wood fiberboard comprises a wood fiberboard 1, a lubricating layer 2, an aluminum foil layer 3 and a hardened layer 4, wherein the lubricating layer 2, the aluminum foil layer 3 and the hardened layer 4 are sequentially arranged from inside to outside along two sides of the wood fiberboard 1; wherein, the hard coating 4 is an epoxy resin coating or an organic silicon coating.
In the embodiment of the application, through a wood fiberboard 1, a lubricating layer 2, an aluminum foil layer 3 and a hardening layer 4, the lubricating layer 2, the aluminum foil layer 3 and the hardening layer 4 are sequentially arranged from inside to outside along two sides of the wood fiberboard 1; wherein, the hard coating 4 is an epoxy resin coating or an organic silicon coating. The aluminum foil and the lubricating layer 2 can absorb heat of the drill point to reduce the temperature of the drill point, meanwhile, the lubricating layer 2 can lubricate the drill point to improve the hole wall quality of a drilled hole, the hardened layer 4 can prevent the bottom plate from being draped, and the softer wood fiber board 1 can reduce abrasion of the drill point.
Next, the lubricating anti-flash pad in the present exemplary embodiment will be further described.
In an embodiment of the application, the base plate comprises a wood fiberboard 1, a lubricating layer 2, an aluminum foil layer 3 and a hardening layer 4, wherein the hardening layer 4 is a coating prepared from an epoxy resin coating or an organic silicon coating, and the epoxy resin coating material comprises the following components in parts by weight: 60-85 parts of liquid epoxy resin, 0.3-2 parts of defoaming agent, 0.3-1 part of flatting agent, 2-5 parts of dispersing agent, 7-10 parts of modified polyamine and 10-15 parts of ultrafine powder calcium carbonate or aluminum oxide; the organic silicon coating material comprises the following components in parts by weight: 75-90 parts of organic silicon resin, 0.06-1.5 parts of defoaming agent, 0.05-1 part of flatting agent, 2-3 parts of dispersing agent and 40-60 parts of superfine aluminum oxide;
as an example, the defoamer is an organosiloxane. The defoaming agent can effectively prevent bubbles from occurring in a system in the production and application processes.
As an example, the leveling agent is an organosiloxane or an acrylate. The leveling agent can improve the leveling and gloss of a system, generate a long-wave effect and prevent shrinkage cavity.
As an example, the dispersant is an organic polyacid. The dispersant can uniformly disperse solid and liquid particles in a system, and can prevent the particles from settling and coagulating to form a stable suspension.
In an embodiment of the present application, the lubricating layer 2 is a coating made of a lubricating coating prepared by mixing three or more of ethylene glycol polymer, ethylene oxide polymer, polyvinyl alcohol, and polyacrylic acid. The polymer resin coating made of water-soluble and hot-melt resin can absorb the heat of the drill point to keep the rigidity of the drill point and prolong the service life of the drill point, thereby improving the quality of the hole wall. In addition, the water-soluble lubricating layer 2 ensures that the PCB is easy to process after drilling and the problems of hole blockage, hole wall pollution and the like can not occur.
In one embodiment of the present application, the thickness of the wood fibre board 1 is in the range of 1.5-4mm, preferably 2.0mm or 2.5mm; the thickness range of the aluminum foil is 0.05-0.2mm, and preferably 0.05mm or 0.1mm; the thickness range of the hardening layer 4 is 0.05-0.2mm, preferably 0.05mm, and the hardness is greater than SD90; the thickness of the lubricating layer 2 is in the range of 0.05-0.1mm, preferably 0.05 or 0.08mm.
Referring to fig. 2, a method for preparing the lubricating anti-flash backing plate according to any one of the above embodiments is shown, which includes the following steps:
s110, preparing a hardening layer 4 coating: weighing 60-85 parts of liquid epoxy resin, 0.3-2 parts of defoaming agent, 0.3-1 part of flatting agent, 2-5 parts of dispersing agent, 7-10 parts of modified polyamine and 10-15 parts of superfine calcium carbonate or aluminum oxide according to parts by weight, fully mixing and stirring, and cooling to room temperature to obtain the epoxy resin coating;
or;
weighing 75-90 parts of organic silicon resin, 0.06-1.5 parts of defoaming agent, 0.05-1 part of flatting agent, 2-3 parts of dispersing agent and 40-60 parts of superfine alumina according to parts by weight, fully mixing and stirring, and cooling to room temperature to obtain the organic silicon coating;
s120, coating a hardening layer 4: coating the epoxy resin coating or the organic silicon coating on the upper surface of the aluminum coil, and baking at a first preset temperature for a first fixed time to obtain a hardened layer 4;
s130, coating a lubricating layer 2: coating a lubricating coating on the lower surface of the aluminum coil, and baking at a second preset temperature for a second fixed time to obtain a lubricating layer 2;
s140, preparing a base plate: and respectively attaching the lubricating layer 2 of the aluminum coil to two side surfaces of the wood fiberboard 1, and pressing at a preset pressure and temperature to obtain the base plate.
Hereinafter, a method of manufacturing the lubricating anti-flash mat according to any one of the above embodiments will be further described.
Example 1
In an embodiment of the present application, as described in step S110, the step of preparing the hardbanding 4 coating includes:
preparing an epoxy resin coating: the epoxy resin coating is prepared by the following method: according to the weight portion, 60 to 85 portions of liquid epoxy resin is taken to be put in a reaction kettle, 0.3 to 2 portions of defoaming agent, 0.3 to 1 portion of flatting agent, 2 to 5 portions of dispersing agent, 7 to 10 portions of modified polyamine and 10 to 15 portions of ultrafine powder calcium carbonate or aluminum oxide are added into the liquid epoxy resin, and the mixture is fully stirred and cooled to room temperature to prepare the coating; wherein, the epoxy resin is preferably 80 parts, the defoaming agent is 1.2 parts, the flatting agent is 0.8 part, the dispersing agent is 3 parts, and the superfine aluminum oxide is 56 parts. The defoaming agent is organic siloxane, the flatting agent is organic siloxane or acrylate, and the dispersing agent is organic polyacid.
As described in step S120, the step of applying the hardbanding layer 4 includes: cleaning an aluminum coil, coating the epoxy resin coating on the upper surface of the aluminum coil, and baking in an oven at 230 ℃ for 2min for curing and forming to obtain the epoxy resin hardened layer 4.
As described in step S130, the step of applying the lubricating layer 2 includes: and coating the lubricating coating on the lower surface of the aluminum coil, baking in an oven at 135 ℃ for 2min, drying and curing to obtain a lubricating layer 2, and then cooling and rolling.
As an example, the lubricating coating is prepared from a mixture of three or more of ethylene glycol polymer, ethylene oxide polymer, polyvinyl alcohol and polyacrylic acid, and the preparation method comprises the following steps: taking 40-90 parts of water-soluble substances (three or more than three of ethylene glycol polymer, ethylene oxide polymer, polyvinyl alcohol and polyacrylic acid), then adding the water-soluble substances into 120-170 parts of deionized water with the temperature of 70-80 ℃, fully stirring and dissolving to obtain a resin mixture, adding 0.7-1.2 parts of water-based antifoaming agent, 0.5-2 parts of flatting agent and 0.5-2 parts of titanate into the mixture, fully stirring and cooling to room temperature to obtain the lubricating coating; wherein, 30 parts of ethylene glycol polymer, 45 parts of ethylene oxide polymer, 10 parts of polyvinyl alcohol or polyacrylic acid, 0.8 part of defoaming agent, 1.2 parts of flatting agent and 2.5 parts of titanate are preferred. Further, the defoaming agent is water-based acrylate, and the leveling agent is polymethyl siloxane.
As set forth in step S140, the step of preparing the backing plate includes: cutting the aluminum roll coated with the hardened layer 4 and the lubricating layer 2 into required specifications by a cutting machine, then attaching the surface of the lubricating layer 2 to the upper surface and the lower surface of the wood fiberboard 1 at a press temperature of 80-110 ℃, and pressing to obtain the lubricating anti-burring base plate.
Example 2
In an embodiment of the present application, as described in step S110, the step of preparing the hardbanding 4 coating includes:
preparing an organic silicon coating: according to the weight portion, 75-90 portions of organic silicon resin are taken to be put in a reaction kettle, 0.06-1.5 portions of defoaming agent, 0.05-1 portions of flatting agent, 2-3 portions of dispersing agent and 40-60 portions of superfine alumina are added into the organic silicon resin, and the organic silicon resin coating is prepared by fully stirring. Wherein, the organic silicon resin is preferably 80 parts, the defoaming agent is 1.2 parts, the flatting agent is 0.8 part, the dispersing agent is 3 parts, and the superfine aluminum oxide is 56 parts. Wherein the defoaming agent is organic siloxane.
As described in step S120, the step of applying the hardbanding layer 4 includes: cleaning an aluminum coil, coating the organic silicon coating on the upper surface of the aluminum coil, and baking in an oven at 230 ℃ for 2min for curing and forming to obtain the epoxy resin hardened layer 4.
As described in step S130, the step of applying the lubricating layer 2 includes: and coating the lubricating coating on the lower surface of the aluminum coil, baking in an oven at 135 ℃ for 2min, drying and curing to obtain a lubricating layer 2, and then cooling and rolling.
As an example, the lubricating coating is prepared from a lubricating coating prepared from a mixture of three or more of ethylene glycol polymer, ethylene oxide polymer, polyvinyl alcohol and polyacrylic acid, and the preparation method comprises the following steps: taking 40-90 parts of water-soluble substances (three or more than three of ethylene glycol polymer, ethylene oxide polymer, polyvinyl alcohol and polyacrylic acid), then adding the water-soluble substances into 120-170 parts of deionized water with the temperature of 70-80 ℃, fully stirring and dissolving to obtain a resin mixture, adding 0.7-1.2 parts of water-based antifoaming agent, 0.5-2 parts of flatting agent and 0.5-2 parts of titanate into the mixture, fully stirring and cooling to room temperature to obtain the lubricating coating; wherein, 30 parts of ethylene glycol polymer, 45 parts of ethylene oxide polymer, 10 parts of polyvinyl alcohol or polyacrylic acid, 0.8 part of defoaming agent, 1.2 parts of flatting agent and 2.5 parts of titanate are preferred. Further, the defoaming agent is water-based acrylate, and the leveling agent is polymethyl siloxane.
As set forth in step S140, the step of preparing the backing plate includes: cutting the aluminum roll coated with the hardened layer 4 and the lubricating layer 2 into required specifications by a cutting machine, then attaching the surface of the lubricating layer 2 to the upper surface and the lower surface of the wood fiberboard 1 at a press temperature of 80-110 ℃, and pressing to obtain the lubricating anti-burring base plate.
Has the beneficial effects that: the lubricating anti-burring base plate has the characteristics of lubrication and burring prevention, and the lubricating layer 2 is a high-molecular resin coating made of water-soluble and hot-melt resin, so that the heat of the drill bit can be absorbed to keep the rigidity of the drill bit, the service life of the drill bit is prolonged, and the quality of the hole wall is improved. In addition, the water-soluble lubricating layer 2 enables the PCB to be extremely easy to process after drilling, so that the problems of hole blocking, hole wall pollution and the like can not occur, the smooth and flat hardened layer 4 is tightly attached to the PCB at the bottom, and the probability of orifice burr occurrence is reduced. The drilling requirement of the high-precision PCB is met, and the drilling tool has the characteristics of large surface hardness, difficulty in deformation, capability of absorbing heat of a drill point, capability of lubricating the drill point, reduction of the rate of broken drill points, capability of inhibiting burrs of a bottom plate and the like.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or terminal apparatus that comprises the element.
The lubricating anti-flash base plate and the preparation method thereof provided by the invention are described in detail, the principle and the implementation mode of the invention are explained by applying specific examples, and the description of the examples is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.

Claims (10)

1. A lubricating and burr-preventing base plate is characterized by comprising a wood fiberboard, a lubricating layer, an aluminum foil layer and a hardening layer, wherein the lubricating layer, the aluminum foil layer and the hardening layer are sequentially arranged from inside to outside along two sides of the wood fiberboard; wherein, the hard coating is an epoxy resin coating or an organic silicon coating.
2. The lubricated flash-preventing backing plate according to claim 1, wherein the thickness of the wood fiberboard ranges from 1.5 mm to 4mm, the thickness of the aluminum foil ranges from 0.05mm to 0.2mm, the thickness of the hardened layer ranges from 0.05mm to 0.2mm, and the thickness of the lubricated layer ranges from 0.05mm to 0.1mm.
3. The lubricious anti-flash backing plate of claim 1 wherein the hardbanding has a hardness greater than SD90.
4. The lubricating anti-flash backing plate of claim 1, wherein the lubricating layer is made of a blend of three or more of ethylene glycol polymer, ethylene oxide polymer, polyvinyl alcohol, and polyacrylic acid.
5. The lubricating anti-flash backing plate of claim 1, wherein the material of the hardbanding comprises the following components in parts by weight: 60-85 parts of liquid epoxy resin, 0.3-2 parts of defoaming agent, 0.3-1 part of flatting agent, 2-5 parts of dispersing agent, 7-10 parts of modified polyamine and 10-15 parts of ultrafine powder calcium carbonate or aluminum oxide.
6. The lubricating flash-preventing backing plate according to claim 1, wherein the material of the hard layer comprises the following components in parts by weight: 75-90 parts of organic silicon resin, 0.06-1.5 parts of defoaming agent, 0.05-1 part of flatting agent, 2-3 parts of dispersing agent and 40-60 parts of superfine aluminum oxide.
7. The lubrication flashing-preventing pad as claimed in claim 1, wherein the defoaming agent is an organosiloxane, the leveling agent is an organosiloxane or an acrylate, and the dispersant is an organic polyacid.
8. A method for preparing the lubricating anti-flash backing plate according to any one of claims 1 to 7, comprising the following steps:
preparing a hardened layer coating: weighing 60-85 parts of liquid epoxy resin, 0.3-2 parts of defoaming agent, 0.3-1 part of flatting agent, 2-5 parts of dispersing agent, 7-10 parts of modified polyamine and 10-15 parts of superfine calcium carbonate or aluminum oxide according to parts by weight, fully mixing and stirring, and cooling to room temperature to obtain the epoxy resin coating;
or;
weighing 75-90 parts of organic silicon resin, 0.06-1.5 parts of defoaming agent, 0.05-1 part of flatting agent, 2-3 parts of dispersing agent and 40-60 parts of superfine alumina according to parts by weight, fully mixing and stirring, and cooling to room temperature to obtain the organic silicon coating;
coating a hardening layer: coating the epoxy resin coating or the organic silicon coating on the upper surface of the aluminum coil, and baking at a first preset temperature for a first fixed time to obtain a hardened layer;
coating a lubricating layer: coating a lubricating coating on the lower surface of the aluminum coil, and baking at a second preset temperature for a second fixed time to obtain a lubricating layer;
preparing a base plate: and respectively attaching the lubricating layer of the aluminum coil to two side surfaces of a wood fiberboard, and pressing at a preset pressure and temperature to obtain the base plate.
9. The method for preparing a lubricating anti-flash backing plate according to claim 8, wherein the first predetermined temperature is 230 ℃, the second predetermined temperature is 135 ℃, and the predetermined pressure temperature is 80-110 ℃.
10. The method of making a lubricious anti-flash backing plate of claim 8, wherein the first fixed time and the second fixed time are both 2min.
CN202210832675.7A 2022-07-15 2022-07-15 Lubricating anti-flash base plate and preparation method thereof Pending CN115214207A (en)

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114536932A (en) * 2022-02-18 2022-05-27 深圳市宏宇辉科技有限公司 PCB (printed circuit board) base plate with hardened layer and preparation method and application thereof

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114536932A (en) * 2022-02-18 2022-05-27 深圳市宏宇辉科技有限公司 PCB (printed circuit board) base plate with hardened layer and preparation method and application thereof

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Application publication date: 20221021