CN104910733A - Aqueous environmentally friendly three-proofing paint for printed circuit board - Google Patents
Aqueous environmentally friendly three-proofing paint for printed circuit board Download PDFInfo
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- CN104910733A CN104910733A CN201510268382.0A CN201510268382A CN104910733A CN 104910733 A CN104910733 A CN 104910733A CN 201510268382 A CN201510268382 A CN 201510268382A CN 104910733 A CN104910733 A CN 104910733A
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- circuit board
- printed circuit
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Abstract
The invention relates to the technical field of printed circuit board protection and concretely relates to aqueous environmentally friendly three-proofing paint for a printed circuit board. Waterborne acrylic resin and waterborne polyurethane resin aqueous solutions are subjected to ultrasonic dispersion treatment so that usage performances are improved, a later curing rate is accelerated and a curing temperature is reduced. Through combination of 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate, polyethylene glycol 400 and sodium iso-octoate as raw materials, the prepared three-proofing paint has a fast curing rate and good emulsion stability, can form a paint film with uniform thickness and good adhesion on a device surface after spray-coating, brush-coating or dip-coating, wherein the paint film does not fall off easily, has excellent waterproof and oil resistant performances, prevents use of a lot of an organic solvent and is environmentally friendly.
Description
Technical field
The present invention relates to printed circuit board guard technology field, be specifically related to a kind of aqueous, environmental protective three anti-paints used for printed circuit board and preparation method thereof.
Background technology
Printed circuit board refers on insulating substrate, forms interconnect circuit and printed element from point to points according to predetermined design, is the supplier of electronic devices and components electrical connection.Circuit card is very common in daily life, little of mobile phone, USB flash disk, photographic camera, arrives greatly the high-end product such as space flight and aviation, high ferro motor-car.Along with the increase increasingly of electronics categories and quantity, improve the competitive power of electronic product, the quality of circuit card of keeping under strict control is particularly important link.In actual application, the environment for use complexity of circuit card is various, the environment such as humidity, high heat, salt fog, low temperature, vibrations, Gao Chen may be faced, if do not carry out corresponding effective protection, circuit card will occur rapidly that burn into is out of shape, goes mouldy, the problem such as aging, finally cause circuit malfunction, equipment breaks down.
In order to alleviate the destruction of external environment to circuit card, the normal operation of guarantee equipment, circuit board surface of being everlasting spraying protective paint, also three anti-paints are referred to as, its main chemical composition is acrylate, silicone, urethane, epoxy resin etc., principle of work forms layer protecting film at circuit board surface, damage from Working environment to make circuit card, thus promote the reliability of circuit card, it is short mainly to there is the protection cycle in existing three anti-paints, high temperature easily comes off, environmental pollutant can not be resisted, especially the corrosion of chemical pollutant, not easily reprocess, the shortcomings such as poisonous and harmful, therefore the anti-paint formula of improvement three is necessary, the over-all properties of further accentuator plate, promote protection effect, to meet the demand of integrated circuit technique fast development.
Summary of the invention
The object of the invention is to, provide a kind of aqueous, environmental protective three anti-paints used for printed circuit board, with the protection printed circuit board of more environment-friendly high-efficiency, to achieve these goals, the technical solution used in the present invention is as follows:
A kind of aqueous, environmental protective three anti-paints used for printed circuit board, is characterized in that, this three anti-paint is made up of the major ingredient of following weight part and auxiliary agent: major ingredient 40-50, auxiliary agent 2-4;
In described major ingredient, each component and weight part thereof are: water-borne acrylic resin 25-30, deionized water 20-30, waterborne polyurethane resin 10-12, Lauryl Alcohol ester 2-3, poly(oxyethylene glycol) 400 6-8, tertbutyl peroxide 1-2, vulcabond 4-5, alkyl polyglycoside 0.2-0.3, dimethyl silicone oil 1-2, dibutyl tin laurate 1-2, formaldehyde ester 4-5, Sodium isooctanoate 1-2;
In described auxiliary agent, each component and weight part thereof are: sepiolite cashmere 2-4, α-amino isopropyl alcohol 1-2, diethylene glycol dibenzoate 4-6, propylene glycol monomethyl ether 2-4, lanopalmitic acid 1-3, boiled wood oil 12-15, oleic acid diethyl amide 1-2, mustard oil 0.1-0.2, methylcarbonate 9-12, polydimethylsiloxane 1-2;
Described a kind of aqueous, environmental protective three anti-paints used for printed circuit board, its preparation method is as follows:
(1) preparation of auxiliary agent: first sepiolite cashmere is mixed with oleic acid diethyl amide, diethylene glycol dibenzoate, 10-15min is ground after stirring, make sepiolite slurry for subsequent use, lanopalmitic acid is added in methylcarbonate, be stirred to after it dissolves completely, add other leftover materials mix and blend 20-30min, then drip sepiolite cashmere slurry, dropping limit, limit is stirred, and drips and terminates and get final product;
(2) poly(oxyethylene glycol) 400, alkyl polyglycoside, dimethyl silicone oil are mixed with deionized water, be heated to 50-60 DEG C, stir 1-2h, mixture is for subsequent use;
(3) tertbutyl peroxide is mixed with formaldehyde ester, be stirred to it and dissolve dispersion completely;
(4) material of step (2) gained is warming up to 70-80 DEG C, add water-borne acrylic resin, waterborne polyurethane resin, ultrasonic 30-40min, add step (3) gained material and other composition again, stir 40-50min, naturally cool to room temperature subsequently and get final product, finished product must be finished using in 1-2h.
Compared with prior art, three anti-paints of the present invention by water-borne acrylic resin and waterborne polyurethane resin through ultrasonic disperse process, significantly improve its use properties, in the solidification process in later stage, solidification value and set time are all shortened, again in conjunction with raw materials such as Lauryl Alcohol ester, poly(oxyethylene glycol) 400, Sodium isooctanoates, prepared by the present invention three anti-paint curing speeds are fast, good emulsion stability, easily sprays, and paint film bonding firmly, high temperature difficult drop-off, waterproof, oil preventing performance are excellent, and avoid the use of a large amount of organic solvent, more environmental protection.
Embodiment
Embodiment
The anti-enamel-cover of the present embodiment three is containing the major ingredient of 50 weight parts and the auxiliary agent of 4 weight parts, and in major ingredient, each component and weight part thereof are: water-borne acrylic resin 30, deionized water 30, waterborne polyurethane resin 12, Lauryl Alcohol ester 3, poly(oxyethylene glycol) 400 8, tertbutyl peroxide 2, vulcabond 4, alkyl polyglycoside 0.3, dimethyl silicone oil 2, dibutyl tin laurate 1, formaldehyde ester 5, Sodium isooctanoate 2; In auxiliary agent, each component and weight part thereof are: sepiolite cashmere 4, α-amino isopropyl alcohol 1, diethylene glycol dibenzoate 6, propylene glycol monomethyl ether 3, lanopalmitic acid 2, boiled wood oil 14, oleic acid diethyl amide 2, mustard oil 0.2, methylcarbonate 10, polydimethylsiloxane 2.
The preparation method of these three anti-paints used for printed circuit board is as follows:
(1) preparation of auxiliary agent: first sepiolite cashmere is mixed with oleic acid diethyl amide, diethylene glycol dibenzoate, 15min is ground after stirring, make sepiolite slurry for subsequent use, lanopalmitic acid is added in methylcarbonate, be stirred to after it dissolves completely, add other leftover materials mix and blend 20min, then drip sepiolite cashmere slurry, dropping limit, limit is stirred, and drips and terminates and get final product;
(2) poly(oxyethylene glycol) 400, alkyl polyglycoside, dimethyl silicone oil are mixed with deionized water, be heated to 50-60 DEG C, stir 1.5h, mixture is for subsequent use;
(3) tertbutyl peroxide is mixed with formaldehyde ester, be stirred to it and dissolve dispersion completely;
(4) material of step (2) gained is warming up to 70-80 DEG C, add water-borne acrylic resin, waterborne polyurethane resin, ultrasonic 40min, add step (3) gained material and other composition again, stir 50min, naturally cool to room temperature subsequently and get final product, finished product must be finished using in 1-2h.
The performance test results of the anti-paint of the present invention three is:
| Test event | Technical indicator |
| Outward appearance | Paint film is smooth, light is plentiful |
| Coat-thickness (mm) | 0.1-0.3 |
| Surface drying time (min, 25 DEG C) | ≤10 |
| Do solid work the time (h, 80 DEG C) | ≤1 |
| Hardness of paint film (shore D) | 70±4 |
| Shock strength kg/cm | ≥50 |
| Sticking power grade | ≥4B |
| Resistance to salt water (25 DEG C × 48h) | Non-foaming, not stratified, do not come off |
| Humidity resistance (65 DEG C × 48h) | Non-foaming, not stratified, do not come off |
| Acid-and base-resisting (68h) | Non-foaming, not stratified, do not come off |
| Volume specific resistance (Ω .cm) | ≥10 12 |
| Operating temperature range (DEG C) | -50-150 |
Above-mentioned test is all followed relevant criterion and is carried out.
Claims (2)
1. aqueous, environmental protective three anti-paints used for printed circuit board, is characterized in that, this three anti-paint is made up of the major ingredient of following weight part and auxiliary agent: major ingredient 40-50, auxiliary agent 2-4;
In described major ingredient, each component and weight part thereof are: water-borne acrylic resin 25-30, deionized water 20-30, waterborne polyurethane resin 10-12, Lauryl Alcohol ester 2-3, poly(oxyethylene glycol) 400 6-8, tertbutyl peroxide 1-2, vulcabond 4-5, alkyl polyglycoside 0.2-0.3, dimethyl silicone oil 1-2, dibutyl tin laurate 1-2, formaldehyde ester 4-5, Sodium isooctanoate 1-2;
The each component of described auxiliary agent and weight part thereof are: sepiolite cashmere 2-4, α-amino isopropyl alcohol 1-2, diethylene glycol dibenzoate 4-6, propylene glycol monomethyl ether 2-4, lanopalmitic acid 1-3, boiled wood oil 12-15, oleic acid diethyl amide 1-2, mustard oil 0.1-0.2, methylcarbonate 9-12, polydimethylsiloxane 1-2.
2. a kind of aqueous, environmental protective as claimed in claim 1 three anti-paints used for printed circuit board, its preparation method is as follows:
(1) preparation of auxiliary agent: first sepiolite cashmere is mixed with oleic acid diethyl amide, diethylene glycol dibenzoate, 10-15min is ground after stirring, make sepiolite slurry for subsequent use, lanopalmitic acid is added in methylcarbonate, be stirred to after it dissolves completely, add other leftover materials mix and blend 20-30min, then drip sepiolite cashmere slurry, dropping limit, limit is stirred, and drips and terminates and get final product;
(2) poly(oxyethylene glycol) 400, alkyl polyglycoside, dimethyl silicone oil are mixed with deionized water, be heated to 50-60 DEG C, stir 1-2h, mixture is for subsequent use;
(3) tertbutyl peroxide is mixed with formaldehyde ester, be stirred to it and dissolve dispersion completely;
(4) material of step (2) gained is warming up to 70-80 DEG C, add water-borne acrylic resin, waterborne polyurethane resin, ultrasonic 30-40min, add step (3) gained material and other composition again, stir 40-50min, naturally cool to room temperature subsequently and get final product, finished product must be finished using in 1-2h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510268382.0A CN104910733A (en) | 2015-05-25 | 2015-05-25 | Aqueous environmentally friendly three-proofing paint for printed circuit board |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510268382.0A CN104910733A (en) | 2015-05-25 | 2015-05-25 | Aqueous environmentally friendly three-proofing paint for printed circuit board |
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| CN104910733A true CN104910733A (en) | 2015-09-16 |
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| CN201510268382.0A Pending CN104910733A (en) | 2015-05-25 | 2015-05-25 | Aqueous environmentally friendly three-proofing paint for printed circuit board |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107903742A (en) * | 2017-12-07 | 2018-04-13 | 南京中贝电子有限公司 | A kind of aqueous, environmental protective three-proofing coating |
| CN108250866A (en) * | 2017-12-28 | 2018-07-06 | 安徽鑫铂铝业股份有限公司 | A kind of preparation method of radiator high heat conduction aluminium alloy extrusions |
| CN114045101A (en) * | 2021-12-21 | 2022-02-15 | 河北慧科电子科技有限公司 | Waterborne polyurethane three-proofing paint and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104073101A (en) * | 2014-06-04 | 2014-10-01 | 乐凯特科技铜陵有限公司 | Three-proofing coating for flexible printed circuit board |
| CN104073131A (en) * | 2014-06-04 | 2014-10-01 | 乐凯特科技铜陵有限公司 | Tri-proof paint for weather-resistant printed circuit board |
-
2015
- 2015-05-25 CN CN201510268382.0A patent/CN104910733A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104073101A (en) * | 2014-06-04 | 2014-10-01 | 乐凯特科技铜陵有限公司 | Three-proofing coating for flexible printed circuit board |
| CN104073131A (en) * | 2014-06-04 | 2014-10-01 | 乐凯特科技铜陵有限公司 | Tri-proof paint for weather-resistant printed circuit board |
Non-Patent Citations (1)
| Title |
|---|
| 傅绍燕: "《涂装工艺及车间设计手册》", 31 January 2013 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107903742A (en) * | 2017-12-07 | 2018-04-13 | 南京中贝电子有限公司 | A kind of aqueous, environmental protective three-proofing coating |
| CN108250866A (en) * | 2017-12-28 | 2018-07-06 | 安徽鑫铂铝业股份有限公司 | A kind of preparation method of radiator high heat conduction aluminium alloy extrusions |
| CN114045101A (en) * | 2021-12-21 | 2022-02-15 | 河北慧科电子科技有限公司 | Waterborne polyurethane three-proofing paint and preparation method thereof |
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Application publication date: 20150916 |
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