CN110077056A - A kind of nano ceramics filled polytetrafluoroethylene glass cloth coated copper foil plate and its manufacture craft - Google Patents
A kind of nano ceramics filled polytetrafluoroethylene glass cloth coated copper foil plate and its manufacture craft Download PDFInfo
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- CN110077056A CN110077056A CN201910354147.3A CN201910354147A CN110077056A CN 110077056 A CN110077056 A CN 110077056A CN 201910354147 A CN201910354147 A CN 201910354147A CN 110077056 A CN110077056 A CN 110077056A
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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
- B32B15/04—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
- B32B15/08—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 synthetic resin
- B32B15/085—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 synthetic resin comprising polyolefins
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- 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
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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
- B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
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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
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
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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
- 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
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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
- 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
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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
- 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
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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
- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- 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
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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
- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- 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
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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
- 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
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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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/308—Heat stability
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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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/726—Permeability to liquids, absorption
- B32B2307/7265—Non-permeable
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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
- B32B2457/00—Electrical equipment
- B32B2457/08—PCBs, i.e. printed circuit boards
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Abstract
The present invention provides a kind of nano ceramics filled polytetrafluoroethylene glass cloth coated copper foil plate and its manufacture craft, is related to electronic information element production field.The nano ceramics filled polytetrafluoroethylene glass cloth coated copper foil plate is to be made by copper foil, PTFE film, polytetrafluorethylenano nano glass-ceramic cloth according to process recipe, the dielectric constant of the nano ceramics filled polytetrafluoroethylene glass cloth coated copper foil plate are as follows: 2.99-3.01 ε γ, dielectric constant error is 1%, and surface resistivity is surface resistivity >=2.1 × 106×106M Ω, volume resistivity >=5.8 × 107.Cm, dielectric loss≤1.36 × 10‑3tgδ.Compare the prior art, " the nano ceramics filled polytetrafluoroethylene glass cloth coated copper foil plate F that the present invention researches and develops4BTME-2 ", intensity are high, water imbibition is low; the effective guarantee Z-direction coefficient of expansion, heat resistanceheat resistant, fire prevention, chemical resistance, moisture-proof, thermal stability, insulation performance are splendid, stabilize the dielectric constant of product; improve the comprehensive performance of product, properties of product reach domestically leading level.
Description
Technical field
The present invention relates to electronic information element manufacture technology field, specially a kind of nano ceramics filled polytetrafluoroethylene glass
Glass cloth copper coated foil plate and its manufacture craft.
Background technique
Copper foil clad plate of polytetrafluoroethylglass glass cloth is that copper foil slits and is attached to bun using polyfluorinated ethylene membrane as adhesive layer
Composite material on material.With excellent electrical property, heat resistance and mechanical strength, suitable for making the printing under high temperature, high frequency
Wiring board.It is widely used in the electronic computer TV machine of satellite pond face station.
The copper foil clad plate of polytetrafluoroethylglass glass cloth of existing domestic technique production at present, dielectric constant poor accuracy, no
Stablize, while lesser sheet resistance and volumetric resistivity value have been unable to meet the requirement of electronic product increasingly high frequency development, mesh
The material that the preceding country uses still relies on import 5880,5870 products are produced, and price is high, and application range is restricted, seriously
Restrict the development of industry.
Summary of the invention
The purpose of the present invention is to provide a kind of nano ceramics filled polytetrafluoroethylene glass cloth coated copper foil plate and its production
Technique, solves the copper foil clad plate of polytetrafluoroethylglass glass cloth of existing domestic technique production, and dielectric constant poor accuracy is unstable
Problem.
In order to achieve the above object, the present invention is achieved by the following technical programs: a kind of nano ceramics filling polytetrafluoro
Ethylene glass cloth coated copper foil plate, the nano ceramics filled polytetrafluoroethylene glass cloth coated copper foil plate are by copper foil, PTFE film, poly- four
Fluoride nanometer glass-ceramic cloth is made according to process recipe, the glass cloth coated copper of nano ceramics filled polytetrafluoroethylene
The dielectric constant of foil plate are as follows: 2.99-3.01 ε γ, dielectric constant error be 1%, surface resistivity be surface resistivity >=2.1 ×
106×106M Ω, volume resistivity >=5.8 × 107.Cm, dielectric loss≤1.36 × 10-3Tg δ, bending strength transverse direction >=5 pounds/
Inch2, buckling strength 132.1MPa, transverse bending strength 120.5MPa, water absorption rate≤0.05%, PIM value :-
166.41dbc~-170.34dbc.
The present invention also provides a kind of production methods of nano ceramics filled polytetrafluoroethylene glass cloth coated copper foil plate, lead to
It crosses after alkali-free glass fiber cloth is impregnated polyflon and ceramic powder mixed liquor, by vertical glue dipping machine dipping, dries,
Polytetrafluoroethylene (PTFE) ceramics glass-fiber-fabric is made, then by polytetrafluoroethylene (PTFE) ceramics glass-fiber-fabric obtained, polytetrafluoroethylene film, with passive
Intermodulation index copper foil by vacuum high-temperature hydraulic press, adds according to different proportions such as 55%-80%:30%-60%:10%-25%
Temperature, pressurization, are made high frequency microwave circuit board base material, comprising the following steps: S1 impregnation mixes glass cloth and nano-ceramic powder
Impregnation afterwards；
S2 sintering, by after impregnation glass cloth and nano-ceramic powder dry, polytetrafluoroethylene (PTFE) ceramics glass-fiber-fabric is made；
S3 is cut out, and polytetrafluoroethylene (PTFE) ceramics glass-fiber-fabric obtained is cut into phase with compress and with passive intermodulation index copper foil
Same size, compress are polytetrafluoroethylene film；
S4 hot pressing, by polytetrafluoroethylene (PTFE) ceramics glass-fiber-fabric obtained, polytetrafluoroethylene film, band passive intermodulation index copper foil
It is made according to different proportions such as 55%-80%:30%-60%:10%-25% by vacuum high-temperature hydraulic press, heating, pressurization
High frequency microwave circuit board base material；
S5 water cooling naturally cools to 260 DEG C hereinafter, then after taking out high frequency microwave circuit board base material obtained after hot pressing
With the mode water cooling of water cooling to 40 DEG C or less
S6 test package, tests to product after water cooling, just starts the packaging of product after having inspected.
Further, in step sl, repeated by vertical glue dipping machine by dipping, drying 2-4 times, and the system of glue
Making formula includes:
D. silane coupling agent, Tripropylene glycol monomethyl Ether, methylimidazole are added sequentially in reaction kettle according to the ratio, unlatching is stirred
Device is mixed, 40-75 DEG C of temperature, 1000-1800 revs/min of revolving speed, persistently stirs 15 minutes, adds the ceramic powder of formula ratio, rise
Temperature continues to be stirred to react 25-40 minutes to 120-140 DEG C, and performed polymer component A is made；
E. polyflon, m-phenylene diamine (MPD) are sequentially added by formula ratio in stirred tank, after addition, in 130-
Pre-polymerization 20-40 minutes at 150 DEG C, cooling obtained B component is poured out；
Component A and B component are uniformly mixed, and acetone is added, is poured into stirred tank, and continue keep 1000-1800 turn/
The revolving speed of minute stirs 4-6 hours, and polyflon and the allotment of ceramic powder mixed liquor are completed.
Further, the prepreg polytetrafluoroethylene (PTFE) ceramics glass-fiber-fabric uses heat radiation type baking oven, is laterally divided into three
A warm area is dried, and by adjusting left, center, right area temperature, it is different to eliminate each site curing degree in prepreg left, center, right
Cause or longitudinal curing degree inconsistence problems, solve bow warping problem.The 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.
Further, on prepreg polytetrafluoroethylene (PTFE) ceramics glass-fiber-fabric obtained, with gathering for 0.03mm -0.08mm
Tetrafluoroethylene, while band passive intermodulation index copper foil is covered with through vacuum liquid press high temperature, high pressure, it is combined high-frequency microwave electricity
Road plate substrate, 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.
Further, it in above-mentioned production method, is presoaked by increasing number subbase body and enhancing immersion degree and surface
System makes bending strength longitudinally, laterally equal 5 pounds/inch of >2, angularity is within 0.7%.Pass through glass cloth and filling ceramic powder
Technique processing, becomes polytetrafluorethylenano nano glass-ceramic cloth, and sheet resistance value is made to reach 1 × 105, volumetric resistivity value 1 ×
107.Cm。
Further, in polyflon (polytetrafluoroethyldispersion dispersion) plus ceramic powder, agitated machine stirring, ceramics
Powder and polyflon ratio are respectively 15%-38% and 85%-62%.
Compare the prior art, " the nano ceramics filled polytetrafluoroethylene glass cloth coated copper foil plate that the present invention researches and develops
F4BTME-2 ", intensity are high, water imbibition is low, the effective guarantee Z-direction coefficient of expansion, heat resistanceheat resistant, fire prevention, chemical resistance, it is moisture-proof,
Thermal stability, insulation performance are splendid, stabilize the dielectric constant of product, improve the comprehensive performance of product, and properties of product reach
Domestically leading level.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention；
Fig. 2 is flow chart of the present invention.
In figure: 1 polytetrafluoroethylene film layer, 2 band passive intermodulation index copper foil layers, 3 nano-ceramic powders fill dielectric
Layer.
Specific embodiment
As shown in Figs. 1-2, the embodiment of the present invention provides a kind of nano ceramics filled polytetrafluoroethylene glass cloth coated copper foil plate
And its manufacture craft, which is to fill dielectric by nano-ceramic powder
Layer 3 is intermediate materials, and fills the two sides splicing tape passive intermodulation index copper foil layer 2 of insulating medium layer 3 in nano-ceramic powder,
It is formed in the outer side bonds polytetrafluoroethylene film layer 1 with passive intermodulation index copper foil layer 2, and the nano ceramics fills polytetrafluoro
The dielectric constant of ethylene glass cloth coated copper foil plate are as follows: 2.99-3.01 ε γ, dielectric constant error are 1%, and surface resistivity is table
Surface resistivity >=2.1 × 106×106M Ω, volume resistivity >=5.8 × 107.Cm, dielectric loss≤1.36 × 10-3Tg δ, bending
Intensity transverse direction >=5 pounds per inch2, buckling strength 132.1MPa, transverse bending strength 120.5MPa, water absorption rate≤
0.05%, PIM value: -166.41dbc~-170.34dbc.
The nano ceramics filled polytetrafluoroethylene glass cloth coated copper foil plate and its manufacture craft are as follows: firstly, according to the ratio will
Silane coupling agent, Tripropylene glycol monomethyl Ether, methylimidazole are added sequentially in reaction kettle, turn on agitator, and 40-75 DEG C of temperature,
It 1000-1800 revs/min of revolving speed, persistently stirs 15 minutes, adds the ceramic powder of formula ratio, be warming up to 120-140 DEG C, and after
It is continuous to be stirred to react 25-40 minutes, performed polymer component A is made；In stirred tank by formula ratio sequentially add polyflon,
M-phenylene diamine (MPD) after addition, pre-polymerization 20-40 minutes at 130-150 DEG C, pours out cooling obtained B component；By component A and B group
Part uniformly mixing, and acetone is added, it pours into stirred tank, and continue to keep 1000-1800 revs/min of revolving speed stirring 4-6 small
When, polyflon and the allotment of ceramic powder mixed liquor are completed.Then impregnation is carried out, glass cloth and nano-ceramic powder are mixed
Impregnation after conjunction, after impregnation, by after impregnation glass cloth and nano-ceramic powder dry, prepreg polytetrafluoroethylene (PTFE) pottery is made
Porcelain glass-fiber-fabric is cut into identical big by polytetrafluoroethylene (PTFE) ceramics glass-fiber-fabric obtained and compress and with passive intermodulation index copper foil
Small, compress is polytetrafluoroethylene film, by polytetrafluoroethylene (PTFE) ceramics glass-fiber-fabric obtained, polytetrafluoroethylene film, with passive mutual
It adjusts index copper foil according to different proportions such as 55%-80%:30%-60%:10%-25%, by vacuum high-temperature hydraulic press, adds
Temperature, pressurization, are made high frequency microwave circuit board base material, natural cooling after high frequency microwave circuit board base material obtained after hot pressing is taken out
To 260 DEG C hereinafter, then having been inspected with the mode water cooling of water cooling to 40 DEG C hereinafter, test after water cooling to product
Qualified product just starts the packaging of product later.
In the present embodiment, prepreg polytetrafluoroethylene (PTFE) ceramics glass-fiber-fabric uses heat radiation type baking oven, is laterally divided into three
A warm area is dried, and by adjusting left, center, right area temperature, it is different to eliminate each site curing degree in prepreg left, center, right
Cause or longitudinal curing degree inconsistence problems, solve bow warping problem.The 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.
This product carries out high-temperature heat treatment using high temperature furnace, according to the thickness, regulation speed, temperature and time of material, clearly
Except the organic matter on glass-fiber-fabric, conductance, dielectric loss, modulus of elasticity hardness, chemical stability and the heat of glass structure are improved
The performances such as the coefficient of expansion, flexural strength >=120.5MPa, peel strength >=29.8N/cm.This product uses prepreg temperature
Area's drying technology is distinguished, baking oven is laterally divided into three warm areas, by adjusting left, center, right area temperature, keeps prepreg lateral
Each position in left, center, right or longitudinal curing degree are consistent, eliminate the buckling deformation that prepreg occurs because curing degree is inconsistent
Problem.This product is 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, make thermal expansion coefficient laterally, it is longitudinal≤10-6/ DEG C, angularity control is existed
Within 0.55%.This product is in polyflon (polytetrafluoroethyldispersion dispersion) plus ceramic powder, agitated machine stirring, ceramics
Powder and polyflon ratio are respectively 15%-38%:85%-62%, and according to dielectric constant difference, dielectric constant is higher
Ceramic powder additional amount is more, and the polyflon of stirring and ceramic powder mixed liquor are passed through by a kind of vertical glue dipping machine
Dipping, drying repeat for 2-4 time, and nanometer pottery powder is made and fills insulating medium layer, dielectric constant control errors 0.1% with
It is interior, it is ensured that dielectric constant accuracy.
Prepreg resin content and curing degree are one of quality control indexs crucial in copper-clad plate production process, this
Product makes bending strength longitudinally, laterally equal > 5 by increasing number subbase body and enhancing immersion degree and the pre- soaking system and test in surface
Pound/inch 2, angularity is within 0.7%.By glass cloth and filling ceramic powder technique processing, become polytetrafluorethylenano nano pottery
Porcelain glass cloth makes sheet resistance value reach 1 × 105, volumetric resistivity value 1 × 107.Cm.Prepreg resin solidification degree is to cover copper foil
One of the quality control index of most critical in plate production process, it and oven temperature, especially baking oven cross section Temperature Distribution are equal
Even property is closely related.It is that baking oven is laterally divided into three warm areas for heat radiation type baking oven, by adjusting left, center, right area temperature,
The inconsistent situation of lateral solidifcation that adhesive sheet is likely to occur is eliminated, as each site curing journey in left, center, right occurs in prepreg
Spend it is inconsistent or it is longitudinal occur curing degree it is inconsistent when, copper coated foil plate obtained will be inconsistent because of curing degree, in generation
Stress and generate warpage, whole plate flatness of some products seems very well, and when being cut into platelet, then the obvious warpage of part platelet,
Or also not warpage is cut under platelet normality, but after these platelets are put into toasting the regular hour in baking oven, solidification is insufficient
Those of platelet further solidify and buckling deformation, or even large area printed board is caused local figure change in size occur, is greater than
Other positions and there may be useless, substandard products, guarantee semifastening sheet laterally, longitudinal curing process consistency, while using vacuum hydraulic
Machine reduces briquetting pressure, reduces the tension of glass-fiber-fabric gluing, solves matrix data enhancing interface technology, reduces internal stress, makes to stick up
Curvature controls within 0.7%, solves filling and diffusion technique, making thermal expansion coefficient is longitudinally, laterally≤10-5/ DEG C.
This product is heat-treated by using high-temperature process XP and special process processing, it is ensured that the structure of glass-fiber-fabric,
Electric property is constant, controls conductance and dielectric loss rises, improve the sheet resistance and volumetric resistivity value of product, be sheet resistance
Rise 0.5 order of magnitude on the basis of the original with volumetric resistivity value.
Since glass-fiber-fabric is coated by process of production as the size and slurry that weaving needs and applies, these organic matters
Presence interfere glass fibre it is bonding with resin, it is therefore desirable to be surface-treated, this product is to pass through heat using heat treatment
Processing can remove organic matter on glass cloth, and if process control technique is unstable, it will be directly affected, and glass structure is loose, weakens,
Lead to conductance and a series of variations such as dielectric loss rising, modulus of elasticity hardness, chemical stability, thermal expansion coefficient, durability
Decline has grasped the pre-treatment of raw material technology of batch production, has stabilized the dielectric constant of product by the implementation of this project,
Improve the comprehensive performance of product.
Claims (7)
1. a kind of nano ceramics filled polytetrafluoroethylene glass cloth coated copper foil plate, the nano ceramics filled polytetrafluoroethylene glass cloth
Copper coated foil plate is to be made by copper foil, PTFE film, polytetrafluorethylenano nano glass-ceramic cloth according to process recipe, and feature exists
In: the dielectric constant of the nano ceramics filled polytetrafluoroethylene glass cloth coated copper foil plate are as follows: 2.99-3.01 ε γ, dielectric constant
Error is 1%, and surface resistivity is surface resistivity >=2.1 × 106×106M Ω, volume resistivity >=5.8 × 107.Cm, it is situated between
Matter loss≤1.36 × 10-3Tg δ, bending strength transverse direction >=5 pounds per inch2, buckling strength 132.1MPa, transverse curvature
Intensity is 120.5MPa, water absorption rate≤0.05%, PIM value: -166.41dbc~-170.34dbc.
2. a kind of production method of nano ceramics filled polytetrafluoroethylene glass cloth coated copper foil plate, which is characterized in that including following
Step:
S1 impregnation, impregnation after glass cloth and nano-ceramic powder are mixed；
S2 sintering, by after impregnation glass cloth and nano-ceramic powder dry, prepreg polytetrafluoroethylene (PTFE) ceramics glass is made
Fine cloth；
S3 is cut out, and is cut by polytetrafluoroethylene (PTFE) ceramics glass-fiber-fabric obtained and compress and with passive intermodulation index copper foil identical big
Small, compress is polytetrafluoroethylene film；
S4 hot pressing, by polytetrafluoroethylene (PTFE) ceramics glass-fiber-fabric obtained, polytetrafluoroethylene film, band passive intermodulation index copper foil according to
High frequency is made by vacuum high-temperature hydraulic press, heating, pressurization in the different proportions such as 55%-80%:30%-60%:10%-25%
Microwave circuit boards substrate；
S5 water cooling naturally cools to 260 DEG C hereinafter, then using water after taking out high frequency microwave circuit board base material obtained after hot pressing
Cold mode water cooling is to 40 DEG C or less
S6 test package, tests to product after water cooling, just starts the packaging of product after having inspected.
3. the production method of nano ceramics filled polytetrafluoroethylene glass cloth coated copper foil plate according to claim 2, special
Sign is: it is described in step sl, repeated for 2-4 times by vertical glue dipping machine by dipping, drying, and the production formula of glue
Include:
A. silane coupling agent, Tripropylene glycol monomethyl Ether, methylimidazole are added sequentially in reaction kettle according to the ratio, open stirring
Device, 1000-1800 revs/min of revolving speed, persistently stirs 15 minutes, adds the ceramic powder of formula ratio, heat up by 40-75 DEG C of temperature
To 120-140 DEG C, and continue to be stirred to react 25-40 minutes, performed polymer component A is made；
B. polyflon, m-phenylene diamine (MPD) are sequentially added by formula ratio in stirred tank, after addition, in 130-150
Pre-polymerization 20-40 minutes at DEG C, cooling obtained B component is poured out；
C. component A and B component are uniformly mixed, and acetone is added, poured into stirred tank, and continue to be kept for 1000-1800 revs/min
The revolving speed of clock stirs 4-6 hours, and polyflon and the allotment of ceramic powder mixed liquor are completed.
4. the production method of nano ceramics filled polytetrafluoroethylene glass cloth coated copper foil plate according to claim 2, special
Sign is: the prepreg polytetrafluoroethylene (PTFE) ceramics glass-fiber-fabric uses heat radiation type baking oven, is laterally divided into three warm areas and carries out
It is inconsistent or longitudinal solid to eliminate each site curing degree in prepreg left, center, right by adjusting left, center, right area temperature for drying
Change degree inconsistence problems solve bow warping problem.The 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.
5. the production method of nano ceramics filled polytetrafluoroethylene glass cloth coated copper foil plate according to claim 2, special
Sign is: on prepreg polytetrafluoroethylene (PTFE) ceramics glass-fiber-fabric obtained, with the polytetrafluoroethylene film of 0.03mm -0.08mm,
It is covered with band passive intermodulation index copper foil simultaneously through vacuum liquid press high temperature, high pressure, is combined high frequency microwave circuit board base material,
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.
6. the production method of nano ceramics filled polytetrafluoroethylene glass cloth coated copper foil plate according to claim 2, special
Sign is: by increasing number subbase body and enhancing immersion degree and the pre- soaking system and test in surface in method for claim 2, making curved
Qu Qiangdu longitudinally, laterally equal 5 pounds/inch of >2, angularity is within 0.7%.It is processed by glass cloth and filling ceramic powder technique,
Become polytetrafluorethylenano nano glass-ceramic cloth, sheet resistance value is made to reach 1 × 105, volumetric resistivity value 1 × 107.Cm。
7. the production method of nano ceramics filled polytetrafluoroethylene glass cloth coated copper foil plate according to claim 2, special
Sign is: in polyflon (polytetrafluoroethyldispersion dispersion) plus ceramic powder, agitated machine is stirred, ceramic powder and polytetrafluoro
Vinyl ratio is respectively 15%-38% and 85%-62%.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115503306A (en) * | 2022-09-22 | 2022-12-23 | 泰州市旺灵绝缘材料厂 | Ultrathin superfine glass fiber cloth ceramic high-frequency copper foil-clad substrate and manufacturing process |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109677075A (en) * | 2017-10-18 | 2019-04-26 | 泰州市旺灵绝缘材料厂 | A kind of wide-dielectric constant polytetrafluoroethylglass nano ceramics glass cloth coated copper foil plate and preparation method thereof |
-
2019
- 2019-04-29 CN CN201910354147.3A patent/CN110077056A/en not_active Withdrawn
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109677075A (en) * | 2017-10-18 | 2019-04-26 | 泰州市旺灵绝缘材料厂 | A kind of wide-dielectric constant polytetrafluoroethylglass nano ceramics glass cloth coated copper foil plate and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115503306A (en) * | 2022-09-22 | 2022-12-23 | 泰州市旺灵绝缘材料厂 | Ultrathin superfine glass fiber cloth ceramic high-frequency copper foil-clad substrate and manufacturing process |
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