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CN107447207A - A kind of soft board adjustment liquid and method of roughening - Google Patents

A kind of soft board adjustment liquid and method of roughening Download PDF

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Publication number
CN107447207A
CN107447207A CN201710646654.5A CN201710646654A CN107447207A CN 107447207 A CN107447207 A CN 107447207A CN 201710646654 A CN201710646654 A CN 201710646654A CN 107447207 A CN107447207 A CN 107447207A
Authority
CN
China
Prior art keywords
soft board
roughening
adjustment liquid
liquid
mass concentration
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201710646654.5A
Other languages
Chinese (zh)
Inventor
王亚君
刘江波
章晓冬
童茂军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SUZHOU TIANCHENG CHEMICAL Co Ltd
Original Assignee
SUZHOU TIANCHENG CHEMICAL Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SUZHOU TIANCHENG CHEMICAL Co Ltd filed Critical SUZHOU TIANCHENG CHEMICAL Co Ltd
Priority to CN201710646654.5A priority Critical patent/CN107447207A/en
Publication of CN107447207A publication Critical patent/CN107447207A/en
Pending legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C18/00Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
    • C23C18/16Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
    • C23C18/18Pretreatment of the material to be coated
    • C23C18/20Pretreatment of the material to be coated of organic surfaces, e.g. resins
    • C23C18/22Roughening, e.g. by etching
    • C23C18/26Roughening, e.g. by etching using organic liquids

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  • Chemical & Material Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing Of Printed Wiring (AREA)
  • Chemically Coating (AREA)

Abstract

The invention provides a kind of soft board adjustment liquid and method of roughening.The soft board adjustment liquid of the present invention, based on mass concentration, the soft board adjustment liquid includes following material:5~100g/L of highly basic;0.1~10g/L of sodium sulfite;2~5g/L of sodium thiosulfate;0.5~50g/L of diamine.Soft board of the present invention adjusts liquid, and PI material surfaces can be made to have the roughness of stable and uniform, is advantageous to regulator absorption thereafter after adjusted liquid roughening on through hole or the PI of blind hole, and adhesive force is good, and surface is without foaming phenomena;Electroless copper follow-up on PI materials is set completely to cover, the surfacing after coating is fine and smooth.The method of roughening of the soft board adjustment liquid of the present invention, technique is simple, convenient operation and control.

Description

A kind of soft board adjustment liquid and method of roughening
Technical field
The invention belongs to chemical copper technical field, is related to a kind of soft board adjustment liquid and method of roughening.
Background technology
PCB (Printed Circuit Board), Chinese is printed circuit board, also known as printed substrate, is important Electronic unit, be electronic component supporter, be electronic component electrical connection carrier.Because it is to use electronic seal What brush art made, therefore be referred to as " printing " circuit board.
As microelectronic packaging technology develops to high speed, lightness direction, it is desirable to which baseplate material has relatively low dielectric Constant, the resistivity of metal line material is low, and deelectric transferred ability is high.Polyimides (Polyimide, abbreviation PI) material has Good insulating properties and sealing, and heat endurance it is high, can high temperature resistant and extremely low temperature, with good mechanical performance, thermal expansion Coefficient is low, nontoxic, and especially he has low dielectric constant, can reduce current interference and energy consumption between wire.So PI It is preferable base plate for packaging, is widely used in civil electronic device products, communication device.PI materials are as PCB The insulating barrier of soft board, its hole metallization process, a kind of special PI regulators of soft board need to be developed, PI base materials can be roughened, had Beneficial to the absorption of regulator thereafter on through hole or the PI of blind hole.
CN102031505A disclose it is a kind of for polyimides chemistry roughening activation adjustment liquid, it is described adjustment liquid be containing There is the aqueous solution of the complex compound of nickel, highly basic, hydrazine hydrate and surfactant;The highly basic is sodium hydroxide or potassium hydroxide.Should After liquid is adjusted for the chemistry roughening activation of polyimides, the roughness stable and uniform on surface is poor, the adhesion of polyimides It is poor.
The content of the invention
In view of the shortcomings of the prior art, an object of the present invention is to provide a kind of soft board adjustment liquid, can make PI materials Surface has the roughness of stable and uniform, is advantageous to regulator absorption thereafter after adjusted liquid roughening in through hole or the PI of blind hole On, electroless copper follow-up on PI materials is completely covered.
To use following technical scheme up to this purpose, the present invention:
A kind of soft board adjusts liquid, and based on mass concentration, the soft board adjustment liquid includes following material:
The usual facile hydrolysis in the basic conditions of PI, and by controllable hydrolysis so as to realize the roughening on surface, it is of the invention sharp With PI this characteristic, in the basic conditions, using KOH concentration in 5~100g/L scope, add through specific chemistry is added Add agent:0.1~10g/L of sodium sulfite, 2~5g/L of sodium thiosulfate, 0.5~50g/L of diamine, realize that soft board PI base materials are controllable thick Change, be advantageous to regulator absorption thereafter on through hole or the PI of blind hole.
In the present invention, the highly basic is potassium hydroxide.Preferably, the mass concentration of the highly basic is 50~60g/L, such as The mass concentration of highly basic be 50g/L, 51g/L, 52g/L, 53g/L, 54g/L, 55g/L, 56g/L, 57g/L, 58g/L, 59g/L, 60g/L。
In the present invention, the mass concentration of the sodium sulfite is 3~6g/L, such as the mass concentration of sodium sulfite is 3g/ L、3.2g/L、3.5g/L、3.6g/L、3.8g/L、4g/L、4.2g/L、4.5g/L、4.6g/L、4.8g/L、5g/L、5.1g/L、 5.3g/L、5.5g/L、5.7g/L、5.8g/L、6g/L。
In the present invention, the mass concentration of the sodium thiosulfate is 3~4g/L, such as the mass concentration of sodium thiosulfate is 3g/L、3.1g/L、3.2g/L、3.3g/L、3.4g/L、3.5g/L、3.6g/L、3.7g/L、3.8g/L、3.9g/L、4g/L。
In the present invention, the mass concentration of the diamine is 20~40g/L, such as the mass concentration of diamine is 20g/L, 22g/ L、25g/L、26g/L、28g/L、30g/L、31g/L、33g/L、35g/L、36g/L、38g/L、40g/L。
As the preferred scheme of the present invention, based on mass concentration, the soft board adjustment liquid includes following material:
As the preferred scheme of the present invention, based on mass concentration, the soft board adjustment liquid includes following material:
The preparation method of soft board of the present invention adjustment liquid is:By each group in the soft board adjustment liquid matched the present invention Divide and be dissolved in the water, you can the preparation adjustment liquid being roughened for soft board chemistry, for the no spy of addition sequence of each component Do not limit.It is first that highly basic is soluble in water under preferable case, obtain strong base solution;Then by sodium sulfite, sodium thiosulfate, connection Amine solvent prepares mixed liquor in water, then mixed liquor is added into stirring to dissolving in strong base solution and obtains the soft board adjustment liquid. In the case of further preferably, operation is all stirred after adding raw material every time, raw material is quickly dissolved.
The second object of the present invention is to provide a kind of method of roughening of the soft board adjustment liquid described in use, the roughening side Method is:Flexible board substrate is contacted with soft board adjustment liquid and carries out roughening treatment.
The temperature of the roughening treatment is 40~60 DEG C, and the time of the roughening treatment is 1~3min.
Compared with prior art, beneficial effects of the present invention are:
Soft board of the present invention adjusts liquid, and PI material surfaces can be made to have the roughness of stable and uniform, had after adjusted liquid roughening Beneficial to the absorption of regulator thereafter on through hole or the PI of blind hole, and adhesive force is good, and surface is without foaming phenomena;Make follow-up on PI materials Electroless copper completely cover, surfacing after coating is fine and smooth.
The method of roughening of the soft board adjustment liquid of the present invention, technique is simple, convenient operation and control.
Embodiment
Technical scheme is further illustrated below by embodiment.
In the whole technique of the electroless copper of circuit board, including several basic handling processes:
1) liquid adjustment, fully washing are adjusted;
2) microetch is roughened, fully washing;
3) presoak;
4) activate, fully washing;
5) reduction or dispergation, fully washing;
6) electroless copper, fully washing.
Following examples carry out copper facing by above-mentioned technological process to the flexible board substrate with PI insulating barriers.
Embodiment 1
The soft board of the present embodiment adjusts liquid based on mass concentration, includes following material:
Roughening is adjusted to base material using the soft board adjustment liquid of above-mentioned preparation, the temperature of roughening treatment is 40 DEG C, roughening After the time of processing is 1min, then copper facing, the substrate surface flat smooth after copper facing, no plating leakage and table are carried out by above-mentioned technique Face is without foaming phenomena.
Embodiment 2
The soft board of the present embodiment adjusts liquid based on mass concentration, includes following material:
Roughening is adjusted to base material using the soft board adjustment liquid of above-mentioned preparation, the temperature of roughening treatment is 60 DEG C, roughening After the time of processing is 3min, then copper facing, the substrate surface flat smooth after copper facing, no plating leakage and table are carried out by above-mentioned technique Face is without foaming phenomena.
Embodiment 3
The soft board of the present embodiment adjusts liquid based on mass concentration, includes following material:
Roughening is adjusted to base material using the soft board adjustment liquid of above-mentioned preparation, the temperature of roughening treatment is 55 DEG C, roughening After the time of processing is 3min, then copper facing, the substrate surface flat smooth after copper facing, no plating leakage and table are carried out by above-mentioned technique Face is without foaming phenomena.
Embodiment 4
The soft board of the present embodiment adjusts liquid based on mass concentration, includes following material:
Roughening is adjusted to base material using the soft board adjustment liquid of above-mentioned preparation, the temperature of roughening treatment is 45 DEG C, roughening After the time of processing is 2min, then copper facing, the substrate surface flat smooth after copper facing, no plating leakage and table are carried out by above-mentioned technique Face is without foaming phenomena.
Embodiment 5
The soft board of the present embodiment adjusts liquid based on mass concentration, includes following material:
Roughening is adjusted to base material using the soft board adjustment liquid of above-mentioned preparation, the temperature of roughening treatment is 55 DEG C, roughening After the time of processing is 3min, then copper facing, the substrate surface flat smooth after copper facing, no plating leakage and table are carried out by above-mentioned technique Face is without foaming phenomena.
Embodiment 6
The soft board of the present embodiment adjusts liquid based on mass concentration, includes following material:
Roughening is adjusted to base material using the soft board adjustment liquid of above-mentioned preparation, the temperature of roughening treatment is 60 DEG C, roughening After the time of processing is 3min, then copper facing, the substrate surface flat smooth after copper facing, no plating leakage and table are carried out by above-mentioned technique Face is without foaming phenomena.
Comparative example
Using method disclosed in CN102031505A embodiments 1, the adjustment liquid of this comparative example, the base material after copper facing are prepared There is foaming phenomena surface irregularity, subregion.
Soft board of the present invention adjusts liquid, and PI material surfaces can be made to have the roughness of stable and uniform, had after adjusted liquid roughening Beneficial to the absorption of regulator thereafter on through hole or the PI of blind hole, and adhesive force is good, and surface is without foaming phenomena;Make follow-up on PI materials Electroless copper completely cover, surfacing after coating is fine and smooth.The method of roughening of the soft board adjustment liquid of the present invention, technique letter It is single, convenient operation and control.
Applicant states that the present invention illustrates the detailed process equipment of the present invention and technological process by above-described embodiment, But the invention is not limited in above-mentioned detailed process equipment and technological process, that is, it is above-mentioned detailed not mean that the present invention has to rely on Process equipment and technological process could be implemented.Person of ordinary skill in the field it will be clearly understood that any improvement in the present invention, The addition of equivalence replacement and auxiliary element to each raw material of product of the present invention, selection of concrete mode etc., all fall within the present invention's Within the scope of protection domain and disclosure.

Claims (10)

1. a kind of soft board adjusts liquid, it is characterised in that based on mass concentration, the soft board adjustment liquid includes following material:
2. soft board according to claim 1 adjusts liquid, it is characterised in that the highly basic is potassium hydroxide.
3. soft board according to claim 1 or 2 adjusts liquid, it is characterised in that the mass concentration of the highly basic is 50~ 60g/L。
4. the soft board adjustment liquid according to one of claim 1-3, it is characterised in that the mass concentration of the sodium sulfite is 3~6g/L.
5. the soft board adjustment liquid according to one of claim 1-4, it is characterised in that the mass concentration of the sodium thiosulfate For 3~4g/L.
6. according to one of claim 1-5 soft board adjustment liquid, it is characterised in that the mass concentration of the diamine be 20~ 40g/L。
7. the soft board adjustment liquid according to one of claim 1-6, it is characterised in that based on mass concentration, the soft board is adjusted Whole liquid includes following material:
8. the soft board adjustment liquid according to one of claim 1-7, it is characterised in that based on mass concentration, the soft board is adjusted Whole liquid includes following material:
A kind of 9. method of roughening of soft board adjustment liquid using as described in one of claim 1-8, it is characterised in that the roughening Method is:Flexible board substrate is contacted with soft board adjustment liquid and carries out roughening treatment.
10. method of roughening according to claim 9, the temperature of the roughening treatment is 40~60 DEG C, the roughening treatment Time be 1~3min.
CN201710646654.5A 2017-08-01 2017-08-01 A kind of soft board adjustment liquid and method of roughening Pending CN107447207A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710646654.5A CN107447207A (en) 2017-08-01 2017-08-01 A kind of soft board adjustment liquid and method of roughening

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Application Number Priority Date Filing Date Title
CN201710646654.5A CN107447207A (en) 2017-08-01 2017-08-01 A kind of soft board adjustment liquid and method of roughening

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0281312A2 (en) * 1987-02-24 1988-09-07 Polyonics Corporation Textured polyimide film
CN101736330A (en) * 2008-11-25 2010-06-16 比亚迪股份有限公司 Method for metalizing polyimide surface
CN105420700A (en) * 2014-09-18 2016-03-23 比亚迪股份有限公司 Polyimide circuit board and manufacturing method thereof
CN105463416A (en) * 2014-07-31 2016-04-06 比亚迪股份有限公司 Adjusting liquid for chemical roughening of polyimide, and a method for surface chemical roughening of polyimide
CN106255347A (en) * 2016-08-23 2016-12-21 台山市精诚达电路有限公司 FPC hole metallization technique
CN106350788A (en) * 2016-09-18 2017-01-25 电子科技大学 Chemical plating front surface modifying system and surface modifying method of organic polymer base material

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0281312A2 (en) * 1987-02-24 1988-09-07 Polyonics Corporation Textured polyimide film
CN101736330A (en) * 2008-11-25 2010-06-16 比亚迪股份有限公司 Method for metalizing polyimide surface
CN105463416A (en) * 2014-07-31 2016-04-06 比亚迪股份有限公司 Adjusting liquid for chemical roughening of polyimide, and a method for surface chemical roughening of polyimide
CN105420700A (en) * 2014-09-18 2016-03-23 比亚迪股份有限公司 Polyimide circuit board and manufacturing method thereof
CN106255347A (en) * 2016-08-23 2016-12-21 台山市精诚达电路有限公司 FPC hole metallization technique
CN106350788A (en) * 2016-09-18 2017-01-25 电子科技大学 Chemical plating front surface modifying system and surface modifying method of organic polymer base material

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Application publication date: 20171208