CN110077054A - A kind of F4BM type tracking exchage high-frequency high-speed copper-clad plate and its preparation process - Google Patents

A kind of F4BM type tracking exchage high-frequency high-speed copper-clad plate and its preparation process Download PDF

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Publication number
CN110077054A
CN110077054A CN201910353923.8A CN201910353923A CN110077054A CN 110077054 A CN110077054 A CN 110077054A CN 201910353923 A CN201910353923 A CN 201910353923A CN 110077054 A CN110077054 A CN 110077054A
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Prior art keywords
copper
polytetrafluoroethylene
f4bm
layer
clad plate
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朱德明
王刚
沈振春
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Taizhou Boyuan Technology Consulting Co Ltd
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Taizhou Boyuan Technology Consulting Co Ltd
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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
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/14—Layered products comprising a layer of metal next to a fibrous or filamentary 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
    • 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
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/02—Layered products essentially comprising sheet glass, or glass, slag, or like fibres in the form of fibres or filaments
    • 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
    • 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
    • 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
    • B32B2255/02—Coating on the layer surface on fibrous or filamentary 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
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/02—Composition of the impregnated, bonded or embedded layer
    • B32B2260/021—Fibrous or filamentary 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
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/101—Glass fibres
    • 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
    • B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
    • B32B2307/204—Di-electric
    • 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
    • B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
    • B32B2307/206—Insulating
    • 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
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/306—Resistant to heat
    • 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
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/306—Resistant to heat
    • B32B2307/3065—Flame resistant or retardant, fire resistant or retardant
    • 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
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/308—Heat stability
    • 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
    • B32B2307/54—Yield strength; Tensile strength
    • 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
    • B32B2307/546—Flexural strength; Flexion stiffness
    • 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
    • B32B2307/726—Permeability to liquids, absorption
    • B32B2307/7265—Non-permeable
    • 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
    • B32B2457/00—Electrical equipment
    • B32B2457/08—PCBs, i.e. printed circuit boards

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  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Laminated Bodies (AREA)
  • Reinforced Plastic Materials (AREA)

Abstract

The present invention relates to mobile communication technology fields, more particularly to a kind of F4BM type tracking exchage high-frequency high-speed copper-clad plate and its preparation process, including insulating medium layer, nano ceramics polytetrafluoroethylene film layer and copper foil layer, the nano ceramics polytetrafluoroethylene film layer is applied to the outer surface of insulating medium layer, the copper foil layer is fixedly connected on the outer surface of nano ceramics polytetrafluoroethylene film layer, a kind of preparation process of F4BM type tracking exchage high-frequency high-speed copper-clad plate, the following steps are included: polytetrafluoroethylene (PTFE) dispersion emulsion is modulated, the pretreatment of glass-fiber-fabric, the preparation of insulating medium layer, the heat treatment of semifastening sheet, copper coated foil plate vacuum hot pressing formation, the inspection and packaging of finished product.The copper coated foil plate of invention preparation has that intensity is high, water imbibition is low, effective guarantee the Z-direction coefficient of expansion, its heat resistanceheat resistant, fire prevention, chemical resistance, moisture-proof, thermal stability and insulation performance are splendid.

Description

A kind of F4BM type tracking exchage high-frequency high-speed copper-clad plate and its preparation process
Technical field
The present invention relates to mobile communication technology field, specially a kind of F4BM type tracking exchage high-frequency high-speed copper-clad plate and Its preparation process.
Background technique
Since the nineties, with electronic computer, mobile communication etc. be the information industry of representative, electronics industry it is prominent fly it is violent Into, the strong innovation for having pushed printed circuit board production technology, with the appearance of surface installation technique, printed circuit board is to height Density.At high speed, low-loss, high-frequency, highly reliable, multiple stratification, low cost direction develop, the polytetrafluoroethyl-ne of former domestic production Alkene glass cloth coated copper foil plate, due to the dielectric constant that it is fixed, lesser sheet resistance and volumetric resistivity value have been unable to meet and set The requirement of meter person.
Copper-clad plate makes the common electric elements of mobile communication, and copper-clad plate is by copper foil, polytetrafluoroethylene film and glass fibre Cloth lamp raw material composition, but there are defects below in preparation for existing copper-clad plate:
(1), since glass-fiber-fabric is coated by the size and slurry that apply for weaving needs in process of production, these have The presence of machine object interferes glass fibre bonding with resin, causes the copper coated foil plate flexural strength of preparation, peel strength low, changes It learns, physical electrical stability is unstable, dielectric constant is unstable, inaccurate, dielectric loss is high, surface resistivity and volume resistance The problems such as rate is low；
(2), prepreg resin solidification degree is one of the quality control index of most critical in copper coated foil plate production process, it It is closely related with oven temperature, especially baking oven cross section temperature distribution evenness, it is existing that prepreg is heat-treated Mode heat treatment temperature it is constant, prepreg occurs that left, to neutralize right each site curing degree inconsistent or longitudinal solidify When degree is inconsistent, copper coated foil plate obtained will be inconsistent because of curing degree, generates internal stress and generates warpage, some products Whole plate flatness seem very well, and when being cut into platelet, then the obvious warpage of part platelet, or is cut under platelet normality and does not also stick up Song, but these platelets are put into baking oven after the baking regular hour, those of solidification deficiency platelet further solidifies and sticks up Song deformation, or even large area printed board is caused local figure change in size occur, greater than other positions, there may be useless, secondary Product influence the preparation quality of copper coated foil plate.
Summary of the invention
In view of the deficiencies of the prior art, the present invention provides a kind of F4BM type tracking exchage high-frequency high-speed copper-clad plate and its Preparation process solves the problems, such as that glass-fiber-fabric is bonding with resin because itself interfering, influences the quality and semi-solid preparation of copper-clad plate preparation The problem of warpage, occurs during heat treatment for piece.
In order to achieve the above object, the present invention is achieved by the following technical programs: a kind of F4BM type tracking exchage is high Frequency high speed copper-clad plate, including insulating medium layer, nano ceramics polytetrafluoroethylene film layer and copper foil layer, the nano ceramics poly- four Fluoroethylene film layer is applied to the outer surface of insulating medium layer, and it is thin that the copper foil layer is fixedly connected on nano ceramics polytetrafluoroethylene (PTFE) The outer surface of film layer.
A kind of preparation process of F4BM type tracking exchage high-frequency high-speed copper-clad plate, comprising the following steps:
S1, the modulation of polytetrafluoroethylene (PTFE) dispersion emulsion:
Using polyflon as matrix resin, sequentially added in stirred tank according to the ratio dipropylene glycol methyl ether, Silane, turn on agitator, keep lasting stirring and control flume temperature are at 25-50 DEG C, continue by 800-1600 revs/min of revolving speed Stirring 10-20 minutes, adds the silicon powder of formula ratio, persistently stirs 15-55 minutes again after addition, then in stirred tank Polyflon and diaminodiphenylsulfone curing agent are sequentially added by formula ratio, efficiently shearing and cream are opened after addition Change 1.2-4.8 hours, while carrying out cooling water circulation, component A is made at 25-50 DEG C in retention groove temperature；It is weighed by formula ratio 2- ethyl imidazol(e), and dipropylene glycol methyl ether is added, it is completely dissolved 2- ethyl imidazol(e), B component is made；Component A and B component is equal Even mixing is added in stirred tank, and continues to keep 800-1600 revs/min of revolving speed to stir 4-10 hours, and impregnation is completed.
The pretreatment of S2, glass-fiber-fabric:
According to performance, purposes and specification requirement, alkali-free glass fiber cloth impregnates a certain proportion of polytetrafluoroethylene (PTFE) dispersion cream After liquid, fired and high temperature sintering forms polytetrafluoroethylglass glass cloth.
The preparation of S3, insulating medium layer:
Insulating medium layer is that prepreg is made by polytetrafluoroethylene (PTFE) dispersion emulsion and alkali-free glass fiber cloth, is then covered with nanometer Ceramic-PTFE film composition, product alkali-free glass fiber cloth impregnate selected resin, are burnt by vertical glue dipping machine dipping, drying and high temperature Knot repeats 2-4 times.
The heat treatment of S4, semifastening sheet:
Prepreg obtained is heat-treated using heat radiation type baking oven, and heat radiation type oven interior is laterally divided into three Warm area is dried, and the temperature of three warm areas is adjustable.
S5, copper coated foil plate vacuum hot pressing formation:
On prepreg obtained, with the nano ceramics PTFE film of 0.03mm -0.08mm, increase resin matrix, enhancing The pre- soaking system and test of immersion degree and surface is covered with copper foil simultaneously, through vacuum liquid press high temperature, high pressure, is combined.
The inspection of S6, finished product:
Check appearance after product is cooling: surface is smooth, bubble-free, crack, hole, wound, wrinkle, starved, layer Between be not allow for lamination and other mechanical damages, check outer dimension: according to production notification sheet detection, outer dimension meets User usage requirements.
S7, packaging:
Packing storage is carried out to finished product.
Preferably, semi-solid preparation state modulator is as follows in the S4 step:
A. impregnation temperature:
Top: 260 DEG C -300 DEG C；
Middle part: 150 DEG C -190 DEG C；
Lower part: 80 DEG C -105 DEG C；
B. speed: 0.95 m/min -1.2 ms/min.
Preferably, the S5 step controls following technological parameter in hot pressing:
A. vacuum degree: 0.02-0.04Mpa；
B. heating rate: 10 DEG C/min；
C. forming temperature: 90-240 DEG C；
D. contact pressure: 50-80psi；
E. briquetting pressure: 135-600psi；
F. the pressing time is formed: 40-60 minutes.
By the above-mentioned description of this invention it is found that compared with prior art, the present invention have it is following the utility model has the advantages that
(1), present invention employs former material high temperature preconditioning techniques, remove the organic matter on glass-fiber-fabric, make glass-fiber-fabric bending resistance Qu Qiangdu >=120.3Mpa, peel strength >=15N/cm, solution copper coated foil plate flexural strength, peel strength are low, chemistry, physics Electric stability instability problem, using high temperature furnace carry out high-temperature heat treatment, according to the thickness of material, regulation speed, temperature and Time removes the organic matter on glass-fiber-fabric, improves the conductance, dielectric loss, modulus of elasticity hardness, chemical stability of glass structure And the performances such as thermal expansion coefficient, flexural strength: longitudinal > 82MPa, lateral > 69MPa, peel strength > 0.71N/mm.
(2), present invention employs prepreg warm area subregion drying technologies, solve the inconsistent difficulty of curing degree of prepreg Topic, this product use prepreg warm area subregion drying technology, baking oven are laterally divided into three warm areas, by adjusting left, center, right Area's temperature keeps each position in prepreg transverse direction left, center, right or longitudinal curing degree consistent, eliminates prepreg because of curing degree The inconsistent and buckling deformation problem that occurs.
(3), present invention employs reinforced resin matrix interface technologies and vacuum hydraulic molding technology thereof to solve plate Warpage problem, this product use vacuum hydraulic by increasing resin matrix, enhancing immersion degree and the pre- soaking system and test in surface Machine reduces briquetting pressure, reduces the tension of glass-fiber-fabric gluing, by angularity control within 0.5%.
(4), it is that matrix modulates the obtained prepreg of glue present invention employs polyflon, is covered with nano ceramics Polytetrafluoroethylene film solves the problems such as copper coated foil plate dielectric loss is high, surface resistivity is low, volume resistivity is low, uses warp The alkali-free glass fiber cloth of high-temperature process impregnates polytetrafluoroethylene (PTFE) dispersion emulsion obtained, by vertical glue dipping machine dipping, repeats to dry Prepreg is made 2-4 times, nano ceramics polytetrafluoroethylene film is covered on prepreg, improves the physics of copper coated foil plate Electric property, dielectric constant: 2.65 ± 0.05, surface resistivity > 104M Ω, volume resistivity > 106M Ω-cm, medium damage Consume 3 × 10-3 of <.
(5), copper coated foil plate prepared by the present invention have intensity is high, water imbibition is low, the effective guarantee Z-direction coefficient of expansion, Its heat resistanceheat resistant, fire prevention, chemical resistance, moisture-proof, thermal stability and insulation performance are splendid.
(6), the present invention is made by increasing resin matrix, enhancing immersion degree and the pre- soaking system and test in surface while being covered with copper foil Briquetting pressure is reduced with vacuum liquid press, the tension of glass-fiber-fabric gluing is reduced and controls angularity within 0.5%.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
In figure: 1 insulating medium layer, 2 nano ceramics polytetrafluoroethylene film layers, 3 copper foil layers.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.
Referring to Fig. 1, the present invention provides a kind of technical solution: a kind of F4BM type tracking exchage high-frequency high-speed copper-clad plate, Including insulating medium layer 1, nano ceramics polytetrafluoroethylene film layer 2 and copper foil layer 3, the nano ceramics polytetrafluoroethylene film Layer 2 is applied to the outer surface of insulating medium layer 1, and the copper foil layer 3 is fixedly connected on nano ceramics polytetrafluoroethylene film layer 2 Outer surface.
A kind of preparation process of F4BM type tracking exchage high-frequency high-speed copper-clad plate, comprising the following steps:
S1, the modulation of polytetrafluoroethylene (PTFE) dispersion emulsion:
Using polyflon as matrix resin, dielectric properties, fine heat-resisting performance, according to the ratio in stirred tank Dipropylene glycol methyl ether, silane are inside sequentially added, turn on agitator, 800-1600 revs/min of revolving speed, holding is persistently stirred and controlled Groove body temperature persistently stirs 10-20 minutes at 25-50 DEG C, adds the silicon powder of formula ratio, persistently stir again after addition 15-55 minutes, then polyflon and diaminodiphenylsulfone curing agent are sequentially added by formula ratio in stirred tank, it adds After open efficiently shearing and emulsification 1.2-4.8 hours, while carrying out cooling water circulation, retention groove temperature at 25-50 DEG C, Component A is made；2- ethyl imidazol(e) is weighed by formula ratio, and dipropylene glycol methyl ether is added, is completely dissolved 2- ethyl imidazol(e), is made B component；Component A and B component are uniformly mixed, are added in stirred tank, and continues to keep 800-1600 revs/min of revolving speed stirring 4-10 hours, impregnation was completed.
The pretreatment of S2, glass-fiber-fabric:
According to performance, purposes and specification requirement, alkali-free glass fiber cloth impregnates a certain proportion of polytetrafluoroethylene (PTFE) dispersion cream After liquid, fired and high temperature sintering forms polytetrafluoroethylglass glass cloth.
The preparation of S3, insulating medium layer 1:
Insulating medium layer 1 is that prepreg is made by polytetrafluoroethylene (PTFE) dispersion emulsion and alkali-free glass fiber cloth, is then covered with and receives Rice ceramic-PTFE film composition, product alkali-free glass fiber cloth impregnate selected resin, are burnt by vertical glue dipping machine dipping, drying and high temperature Knot repeats 2-4 times.
The heat treatment of S4, semifastening sheet:
Prepreg obtained is heat-treated using heat radiation type baking oven, and heat radiation type oven interior is laterally divided into three Warm area is dried, and the temperature of three warm areas is adjustable, and semi-solid preparation state modulator is as follows:
A. impregnation temperature:
Top: 260 DEG C -300 DEG C；
Middle part: 150 DEG C -190 DEG C；
Lower part: 80 DEG C -105 DEG C；
B. speed: 0.95 m/min -1.2 ms/min.
S5, copper coated foil plate vacuum hot pressing formation:
On prepreg obtained, with the nano ceramics PTFE film of 0.03mm -0.08mm, increase resin matrix, enhancing The pre- soaking system and test of immersion degree and surface is covered with copper foil simultaneously, through vacuum liquid press high temperature, high pressure, is combined, and reduces molding pressure Power, the tension for reducing glass-fiber-fabric gluing simultaneously control angularity within 0.5%, and following technological parameter is controlled in hot pressing:
A. vacuum degree: 0.02-0.04Mpa；
B. heating rate: 10 DEG C/min；
C. forming temperature: 90-240 DEG C；
D. contact pressure: 50-80psi；
E. briquetting pressure: 135-600psi；
F. the pressing time is formed: 40-60 minutes.
The inspection of S6, finished product:
Check appearance after product is cooling: surface is smooth, bubble-free, crack, hole, wound, wrinkle, starved, layer Between be not allow for lamination and other mechanical damages, check outer dimension: according to production notification sheet detection, outer dimension meets User usage requirements.
S7, packaging:
Packing storage is carried out to finished product.
This product is through electronics and IT products quality supervision and test research institute, Jiangsu Province (Jiangsu Province's information security assessment center) Detection, dielectric constant: 2.65 ± 0.05, surface resistivity > 104M Ω, volume resistivity > 106M Ω-cm, dielectric loss < 3 × 10-3, breakdown voltage 22 (KV) peel strength: > 0.71N/mm after > 0.71N/mm thermal stress under normality, are exposed to technique > 0.71N/mm after solution, not stratified, not blistering, bending strength: longitudinal > 82MPa, transverse direction > 69MPa, water absorption rate < 0.2%, examined project is all qualified, and properties of product reach domestically leading level.
The technical indicator of this project product " copper-clad plate of F4BM type tracking exchage high-frequency high-speed " design requirement is as follows:
Beneficial effects of the present invention: present invention employs former material high temperature preconditioning techniques, remove the organic matter on glass-fiber-fabric, Make glass-fiber-fabric flexural strength >=120.3Mpa, peel strength >=15N/cm solves copper coated foil plate flexural strength, peel strength Low, chemistry, physical electrical stability instability problem carry out high-temperature heat treatment using high temperature furnace, according to the thickness of material, control Speed, temperature and time, remove the organic matter on glass-fiber-fabric, and the conductance, dielectric loss, modulus of elasticity for improving glass structure are hard The performances such as degree, chemical stability and thermal expansion coefficient, flexural strength: longitudinal > 82MPa, lateral > 69MPa, anti-stripping are strong Spend > 0.71N/mm.
Present invention employs prepreg warm area subregion drying technologies, solve the inconsistent problem of curing degree of prepreg, This product uses prepreg warm area subregion drying technology, and baking oven is laterally divided into three warm areas, by adjusting left, center, right area Temperature keeps each position in prepreg transverse direction left, center, right or longitudinal curing degree consistent, eliminates prepreg because of curing degree not The buckling deformation problem unanimously occurred.
Present invention employs reinforced resin matrix interface technologies and vacuum hydraulic molding technology thereof to solve bow warping Problem, this product are subtracted by increasing resin matrix, enhancing immersion degree and the pre- soaking system and test in surface using vacuum liquid press Few briquetting pressure, reduces the tension of glass-fiber-fabric gluing, by angularity control within 0.5%.
It is that matrix modulates the obtained prepreg of glue present invention employs polyflon, is covered with nano ceramics poly- four Fluoroethylene film solves the problems such as copper coated foil plate dielectric loss is high, surface resistivity is low, volume resistivity is low, using through high temperature The alkali-free glass fiber cloth of processing impregnates polytetrafluoroethylene (PTFE) dispersion emulsion obtained, by vertical glue dipping machine dipping, repeats drying 2-4 It is secondary that prepreg is made, it is covered with nano ceramics polytetrafluoroethylene film on prepreg, improves the physics electricity of copper coated foil plate Gas performance, dielectric constant: 2.65 ± 0.05, surface resistivity > 104M Ω, volume resistivity > 106M Ω-cm, dielectric loss 3 × 10-3 of <.
Copper coated foil plate prepared by the present invention has that intensity is high, water imbibition is low, the effective guarantee Z-direction coefficient of expansion, it is anti- Heat, fire prevention, chemical resistance, moisture-proof, thermal stability and insulation performance are splendid.
The present invention, which passes through to increase resin matrix, enhancing immersion degree and the pre- soaking system and test in surface while being covered with copper foil, to be used very Empty hydraulic press reduces briquetting pressure, reduces the tension of glass-fiber-fabric gluing and controls angularity within 0.5%.
F4BM type tracking exchage high-frequency high-speed copper-clad plate provided by the present invention and its preparation process are carried out above It is discussed in detail.Invention applies a specific example illustrates the principle and implementation of the invention, above embodiments Illustrate to be merely used to help understand method and its core concept of the invention.It should be pointed out that for the common skill of the art , without departing from the principle of the present invention, can be with several improvements and modifications are made to the present invention for art personnel, these change It is also fallen within the protection scope of the claims of the present invention into modification.

Claims (4)

1. a kind of F4BM type tracking exchage high-frequency high-speed copper-clad plate, including insulating medium layer (1), nano ceramics polytetrafluoroethylene (PTFE) Film layer (2) and copper foil layer (3), it is characterised in that: the nano ceramics polytetrafluoroethylene film layer (2) is applied to dielectric The outer surface of layer (1), the copper foil layer (3) are fixedly connected on the outer surface of nano ceramics polytetrafluoroethylene film layer (2).
2. a kind of preparation process of F4BM type tracking exchage high-frequency high-speed copper-clad plate, it is characterised in that: the following steps are included:
S1, the modulation of polytetrafluoroethylene (PTFE) dispersion emulsion:
Using polyflon as matrix resin, dipropylene glycol methyl ether, silane are sequentially added in stirred tank according to the ratio, Turn on agitator, keeps lasting stirring and control flume temperature is at 25-50 DEG C by 800-1600 revs/min of revolving speed, lasting to stir 10-20 minutes, the silicon powder of formula ratio is added, is persistently stirred 15-55 minutes again after addition, then by matching in stirred tank Side's amount sequentially adds polyflon and diaminodiphenylsulfone curing agent, and efficiently shearing and emulsification are opened after addition 1.2-4.8 hours, while cooling water circulation is carried out, component A is made at 25-50 DEG C in retention groove temperature；2- is weighed by formula ratio Ethyl imidazol(e), and dipropylene glycol methyl ether is added, it is completely dissolved 2- ethyl imidazol(e), B component is made；Component A and B component is uniform Mixing is added in stirred tank, and continues to keep 800-1600 revs/min of revolving speed to stir 4-10 hours, and impregnation is completed；
The pretreatment of S2, glass-fiber-fabric:
According to performance, purposes and specification requirement, after alkali-free glass fiber cloth impregnates a certain proportion of polytetrafluoroethylene (PTFE) dispersion emulsion, Fired and high temperature sintering forms polytetrafluoroethylglass glass cloth；
The preparation of S3, insulating medium layer (1):
Insulating medium layer (1) is that prepreg is made by polytetrafluoroethylene (PTFE) dispersion emulsion and alkali-free glass fiber cloth, is then covered with nanometer Ceramic-PTFE film composition, product alkali-free glass fiber cloth impregnate selected resin, are burnt by vertical glue dipping machine dipping, drying and high temperature Knot repeats 2-4 times；
The heat treatment of S4, semifastening sheet:
Prepreg obtained is heat-treated using heat radiation type baking oven, and heat radiation type oven interior is laterally divided into three warm areas It is dried, the temperature of three warm areas is adjustable；
S5, copper coated foil plate vacuum hot pressing formation:
On prepreg obtained, with the nano ceramics PTFE film of 0.03mm -0.08mm, increase resin matrix, enhancing is immersed The pre- soaking system and test of degree and surface is covered with copper foil simultaneously, through vacuum liquid press high temperature, high pressure, is combined；
The inspection of S6, finished product:
Check appearance after product is cooling: surface is smooth, bubble-free, crack, hole, wound, wrinkle, starved, and interlayer is not Allow to have lamination and other mechanical damages, check outer dimension: according to production notification sheet detection, outer dimension meets user Requirement；
S7, packaging:
Packing storage is carried out to finished product.
3. the preparation process of F4BM type tracking exchage high-frequency high-speed copper-clad plate according to claim 2, it is characterised in that: Semi-solid preparation state modulator is as follows in the S4 step:
A. impregnation temperature:
Top: 260 DEG C -300 DEG C；
Middle part: 150 DEG C -190 DEG C；
Lower part: 80 DEG C -105 DEG C；
B. speed: 0.95 m/min -1.2 ms/min.
4. the preparation process of F4BM type tracking exchage high-frequency high-speed copper-clad plate according to claim 2, it is characterised in that: The S5 step controls following technological parameter in hot pressing:
A. vacuum degree: 0.02-0.04Mpa；
B. heating rate: 10 DEG C/min；
C. forming temperature: 90-240 DEG C；
D. contact pressure: 50-80psi；
E. briquetting pressure: 135-600psi；
F. the pressing time is formed: 40-60 minutes.
CN201910353923.8A 2019-04-29 2019-04-29 A kind of F4BM type tracking exchage high-frequency high-speed copper-clad plate and its preparation process Pending CN110077054A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113386418A (en) * 2021-07-13 2021-09-14 郴州功田电子陶瓷技术有限公司 Preparation method of high-performance polytetrafluoroethylene copper-clad plate

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109677099A (en) * 2017-10-18 2019-04-26 泰州市旺灵绝缘材料厂 Polytetrafluoroethylglass glass cloth ceramic membrane copper coated foil plate and preparation method thereof

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109677099A (en) * 2017-10-18 2019-04-26 泰州市旺灵绝缘材料厂 Polytetrafluoroethylglass glass cloth ceramic membrane copper coated foil plate and preparation method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113386418A (en) * 2021-07-13 2021-09-14 郴州功田电子陶瓷技术有限公司 Preparation method of high-performance polytetrafluoroethylene copper-clad plate
CN113386418B (en) * 2021-07-13 2024-01-23 郴州功田电子陶瓷技术有限公司 Preparation method of high-performance polytetrafluoroethylene copper-clad plate

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