CN114591638A - UV double-curing circuit board three-proofing paint and preparation method thereof - Google Patents
UV double-curing circuit board three-proofing paint and preparation method thereof Download PDFInfo
- Publication number
- CN114591638A CN114591638A CN202210245272.2A CN202210245272A CN114591638A CN 114591638 A CN114591638 A CN 114591638A CN 202210245272 A CN202210245272 A CN 202210245272A CN 114591638 A CN114591638 A CN 114591638A
- Authority
- CN
- China
- Prior art keywords
- parts
- agent
- circuit board
- proofing paint
- acrylate
- 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
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D4/00—Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16
- C09D4/06—Organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond in combination with a macromolecular compound other than an unsaturated polymer of groups C09D159/00 - C09D187/00
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/66—Additives characterised by particle size
Abstract
The invention discloses UV double-curing circuit board three-proofing paint and a preparation method thereof, and belongs to the technical field of paint. The UV dual-curing circuit board three-proofing paint comprises the following raw materials in parts by weight: 10-20 parts of polymethacrylate, 40-50 parts of acrylate monomer, 160 parts of ethyl cyanoacetate 140-containing material, 80-120 parts of formaldehyde, 0.2-1 part of condensing agent, 0.2-1 part of polymerization inhibitor, 5-10 parts of photoinitiator, 1-5 parts of anti-aging agent, 0.1-1 part of fluorescent agent, 0.2-1 part of flatting agent, 0.2-1 part of defoaming agent, 0.2-1 part of thixotropic agent and 0.5-5 parts of inorganic dispersing agent. The preparation method of the invention well solves the problem that the organosilicon quaternary ammonium salt is difficult to disperse and slowly release in plastics. The UV dual-curing circuit board conformal coating has the advantages of high curing speed, excellent mechanical property and excellent electrical property. The UV dual-curing circuit board three-proofing paint disclosed by the invention is added with two inorganic dispersing agents with different particle sizes, so that the mechanical properties are not greatly influenced under a specific proportion and content, the electrical properties can be obviously improved, and the quality of a PCBA board is improved.
Description
Technical Field
The invention belongs to the technical field of coatings, and particularly relates to a UV double-curing circuit board three-proofing paint and a preparation method thereof.
Background
The protection of the covering/welding points or pins of various circuit boards needs to be provided with moisture-proof, salt mist-proof and mildew-proof three-proofing paint so as to effectively isolate air and protect products from erosion and damage of severe environment, thereby improving the reliability of the products, increasing the safety factor of the products and ensuring the service life of the products. The three-proofing coating is also suitable for spraying, dispensing, hand brushing and other processes for coating the surface of the PCBA.
CN113444384A discloses a UV-moisture dual-curing conformal coating, a preparation method and an application thereof, and the conformal coating overcomes the problem that the moisture curing speed of polyurethane acrylate conformal coating products is too low. The researchers in this patent found that the mechanical properties after curing were slightly inferior.
Disclosure of Invention
In the research on the influence of the added dispersing agent on the mechanical property of the solidified three-proofing paint, the invention unexpectedly discovers that the electrical property of the solidified three-proofing paint can be obviously improved by adding two inorganic dispersing agents with different particle sizes, and the invention is based on the discovery.
The invention discloses a UV double-curing circuit board three-proofing paint which comprises the following raw materials in parts by weight:
10-20 parts of polymethacrylate, 40-50 parts of acrylate monomer, 160 parts of ethyl cyanoacetate 140-containing material, 80-120 parts of formaldehyde, 0.2-1 part of condensing agent, 0.2-1 part of polymerization inhibitor, 5-10 parts of photoinitiator, 1-5 parts of anti-aging agent, 0.1-1 part of fluorescent agent, 0.2-1 part of flatting agent, 0.2-1 part of defoaming agent, 0.2-1 part of thixotropic agent and 0.5-5 parts of inorganic dispersing agent.
In some preferred embodiments of the present invention, the following raw materials are included in parts by weight: 15 parts of polymethacrylate, 45 parts of acrylate monomer (15 parts of isooctyl acrylate, 15 parts of isobornyl acrylate and 15 parts of tetrahydrofuran acrylate), 150 parts of ethyl cyanoacetate, 100 parts of formaldehyde, 0.5 part of condensing agent, 0.5 part of polymerization inhibitor, 8 parts of photoinitiator, 2 parts of anti-aging agent, 0.5 part of fluorescent agent, 0.5 part of flatting agent, 0.5 part of defoaming agent, 0.5 part of thixotropic agent and 0.5-5 parts of inorganic dispersant.
In some preferred embodiments of the present invention, the acrylate monomer is at least one of isooctyl acrylate, isobornyl acrylate, and tetrahydrofurfuryl acrylate.
In some preferred embodiments of the present invention, the inorganic dispersant is 1 to 2 parts.
In some preferred embodiments of the present invention, the inorganic dispersant is at least one of calcium carbonate, titanium dioxide, talc, iron oxide, zinc oxide, and iron oxide yellow, preferably calcium carbonate.
In some preferred embodiments of the present invention, the inorganic dispersant comprises particles of two different particle sizes.
In some preferred embodiments of the present invention, the two different particle sizes of the inorganic dispersant are 180-220 mesh and 750-850 mesh, respectively.
In some preferred embodiments of the present invention, the weight ratio of the two different particle sizes of the inorganic dispersant (large particles: small particles) is (5-50): (50-95), preferably (15-25): (75-85).
The second aspect of the invention discloses a preparation method of the UV dual-curing circuit board three-proofing paint, which comprises the following steps:
s01, preparing two inorganic dispersants of particles with different particle sizes;
s02, mixing polymethacrylate, acrylate monomer, ethyl cyanoacetate, formaldehyde and condensing agent, stirring, heating for reaction, heating and decompressing to distill fraction, cooling, adding the inorganic dispersant, polymerization inhibitor, photoinitiator, anti-aging agent, fluorescent agent, leveling agent, defoaming agent and thixotropic agent prepared in the step S01 into the obtained cooled product, and mixing to prepare the UV dual-curing circuit board three-proofing paint.
In some preferred embodiments of the present invention, in S02, the reaction is heated at 65-75 ℃ for 1-12h, then heated to 110-120 ℃ for vacuum distillation, preferably, the reaction is heated at 70 ℃ for 1h, and then heated to 110 ℃ for vacuum distillation.
In some preferred embodiments of the present invention, the mixing in S02 is performed by high speed stirring, which is determined by the following formula:
wherein R is the stirring speed and the unit is rpm; c is the mass percentage of the inorganic dispersant, Cs is the standard mass percentage of the inorganic dispersant and the value is 1%; r isunitTaking the stirring speed as a standard unit, and taking the stirring speed at 1000 rpm; k is1And K2To adjust the coefficientThe values are respectively 3.5-5 and 2-3.
The invention has the beneficial effects that:
(1) the UV dual-curing circuit board conformal coating has the advantages of high curing speed, excellent mechanical property and excellent electrical property.
(2) The UV dual-curing circuit board three-proofing paint disclosed by the invention is added with two inorganic dispersing agents with different particle sizes, so that the mechanical properties are not greatly influenced under a specific proportion and content, the electrical properties can be obviously improved, and the quality of a PCBA board is improved.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention.
The condensation agent is piperidine, the polymerization inhibitor is hydroquinone, the photoinitiator is 2,4, 6-trimethylbenzoyl-diphenyl phosphorus oxide, the anti-aging agent is TINUVIN 571, the fluorescent agent is fluorescent powder for an ultraviolet light source, the leveling agent is a leveling agent BYK 333, the defoaming agent is defoaming agent BYK 055, and the thixotropic agent is thixotropic agent ANK 1010.
Unless otherwise specified, examples, comparative examples or experimental examples are parallel tests with identical components, component contents, preparation steps and preparation parameters.
Example 1
A preparation method of UV double-curing circuit board three-proofing paint comprises the following steps:
(1) preparation of two calcium carbonates of different particle sizes
Calcium carbonate of 200 meshes and 800 meshes is taken and mixed according to the weight ratio of 50:50 to obtain the inorganic dispersant for standby.
(2) Mixing polymethacrylate, acrylate monomer, ethyl cyanoacetate, formaldehyde and condensing agent, stirring, heating at 70 ℃ for reaction for 1h, heating to 110 ℃, distilling under reduced pressure to obtain fraction, cooling, adding the inorganic dispersant, polymerization inhibitor, photoinitiator, anti-aging agent, fluorescent agent, leveling agent, defoaming agent and thixotropic agent prepared in the step (1) into the obtained cooled product, and uniformly mixing to obtain the UV dual-curing circuit board three-proofing paint.
The UV dual-curing circuit board three-proofing paint comprises the following raw materials in parts by weight:
15 parts of polymethacrylate, 45 parts of acrylate monomer (15 parts of isooctyl acrylate, 15 parts of isobornyl acrylate and 15 parts of tetrahydrofuran acrylate), 150 parts of ethyl cyanoacetate, 100 parts of formaldehyde, 0.5 part of condensing agent, 0.5 part of polymerization inhibitor, 8 parts of photoinitiator, 2 parts of anti-aging agent, 0.5 part of fluorescent agent, 0.5 part of flatting agent, 0.5 part of defoaming agent, 0.5 part of thixotropic agent and 1 part of inorganic dispersant.
Example 2
A preparation method of UV double-curing circuit board three-proofing paint comprises the following steps:
(1) preparation of two calcium carbonates of different particle sizes
Calcium carbonate of 200 meshes and calcium carbonate of 800 meshes are mixed according to the weight ratio of 50:50 to obtain the inorganic dispersant for later use.
(2) Mixing polymethacrylate, acrylate monomer, ethyl cyanoacetate, formaldehyde and condensing agent, stirring, heating at 70 ℃ for reaction for 1h, heating to 110 ℃, distilling under reduced pressure to obtain fraction, cooling, adding the inorganic dispersant, polymerization inhibitor, photoinitiator, anti-aging agent, fluorescent agent, leveling agent, defoaming agent and thixotropic agent prepared in the step (1) into the obtained cooled product, and uniformly mixing to obtain the UV dual-curing circuit board three-proofing paint.
The UV dual-curing circuit board three-proofing paint comprises the following raw materials in parts by weight:
15 parts of polymethacrylate, 45 parts of acrylate monomer (15 parts of isooctyl acrylate, 15 parts of isobornyl acrylate and 15 parts of tetrahydrofuran acrylate), 150 parts of ethyl cyanoacetate, 100 parts of formaldehyde, 0.5 part of condensing agent, 0.5 part of polymerization inhibitor, 8 parts of photoinitiator, 2 parts of anti-aging agent, 0.5 part of fluorescent agent, 0.5 part of flatting agent, 0.5 part of defoaming agent, 0.5 part of thixotropic agent and 1.5 parts of inorganic dispersing agent.
Example 3
A preparation method of UV double-curing circuit board three-proofing paint comprises the following steps:
(1) preparation of two calcium carbonates of different particle sizes
Calcium carbonate of 200 meshes and 800 meshes is taken and mixed according to the weight ratio of 50:50 to obtain the inorganic dispersant for standby.
(2) Mixing polymethacrylate, acrylate monomer, ethyl cyanoacetate, formaldehyde and condensing agent, stirring, heating at 70 ℃ for reaction for 1h, heating to 110 ℃, distilling under reduced pressure to obtain fraction, cooling, adding the inorganic dispersant, polymerization inhibitor, photoinitiator, anti-aging agent, fluorescent agent, leveling agent, defoaming agent and thixotropic agent prepared in the step (1) into the obtained cooled product, and uniformly mixing to obtain the UV dual-curing circuit board three-proofing paint.
The UV dual-curing circuit board three-proofing paint comprises the following raw materials in parts by weight:
15 parts of polymethacrylate, 45 parts of acrylate monomer (15 parts of isooctyl acrylate, 15 parts of isobornyl acrylate and 15 parts of tetrahydrofuran acrylate), 150 parts of ethyl cyanoacetate, 100 parts of formaldehyde, 0.5 part of condensing agent, 0.5 part of polymerization inhibitor, 8 parts of photoinitiator, 2 parts of anti-aging agent, 0.5 part of fluorescent agent, 0.5 part of flatting agent, 0.5 part of defoaming agent, 0.5 part of thixotropic agent and 2 parts of inorganic dispersant.
Example 4
A preparation method of UV double-curing circuit board three-proofing paint comprises the following steps:
(1) preparation of two calcium carbonates of different particle size
Calcium carbonate of 200 meshes and 800 meshes is taken and mixed according to the weight ratio of 40:60 to obtain the inorganic dispersant for standby.
(2) Mixing polymethacrylate, acrylate monomer, ethyl cyanoacetate, formaldehyde and condensing agent, stirring, heating at 70 ℃ for reaction for 1h, heating to 110 ℃, distilling under reduced pressure to obtain fraction, cooling, adding the inorganic dispersant, polymerization inhibitor, photoinitiator, anti-aging agent, fluorescent agent, leveling agent, defoaming agent and thixotropic agent prepared in the step (1) into the obtained cooled product, and uniformly mixing to obtain the UV dual-curing circuit board three-proofing paint.
The UV dual-curing circuit board three-proofing paint comprises the following raw materials in parts by weight:
15 parts of polymethacrylate, 45 parts of acrylate monomer (15 parts of isooctyl acrylate, 15 parts of isobornyl acrylate and 15 parts of tetrahydrofuran acrylate), 150 parts of ethyl cyanoacetate, 100 parts of formaldehyde, 0.5 part of condensing agent, 0.5 part of polymerization inhibitor, 8 parts of photoinitiator, 2 parts of anti-aging agent, 0.5 part of fluorescent agent, 0.5 part of flatting agent, 0.5 part of defoaming agent, 0.5 part of thixotropic agent and 1 part of inorganic dispersant.
Example 5
A preparation method of UV double-curing circuit board three-proofing paint comprises the following steps:
(1) preparation of two calcium carbonates of different particle sizes
Calcium carbonate of 200 meshes and 800 meshes is taken and mixed according to the weight portion ratio of 20:80 to obtain the inorganic dispersant for standby.
(2) Mixing polymethacrylate, acrylate monomer, ethyl cyanoacetate, formaldehyde and condensing agent, stirring, heating at 70 ℃ for reaction for 1h, heating to 110 ℃, distilling under reduced pressure to obtain fraction, cooling, adding the inorganic dispersant, polymerization inhibitor, photoinitiator, anti-aging agent, fluorescent agent, leveling agent, defoaming agent and thixotropic agent prepared in the step (1) into the obtained cooled product, and uniformly mixing to obtain the UV dual-curing circuit board three-proofing paint.
The UV dual-curing circuit board three-proofing paint comprises the following raw materials in parts by weight:
15 parts of polymethacrylate, 45 parts of acrylate monomer (15 parts of isooctyl acrylate, 15 parts of isobornyl acrylate and 15 parts of tetrahydrofuran acrylate), 150 parts of ethyl cyanoacetate, 100 parts of formaldehyde, 0.5 part of condensing agent, 0.5 part of polymerization inhibitor, 8 parts of photoinitiator, 2 parts of anti-aging agent, 0.5 part of fluorescent agent, 0.5 part of flatting agent, 0.5 part of defoaming agent, 0.5 part of thixotropic agent and 1 part of inorganic dispersant.
Example 6
A preparation method of UV double-curing circuit board three-proofing paint comprises the following steps:
(1) preparation of two calcium carbonates of different particle sizes
Calcium carbonate of 200 meshes and calcium carbonate of 800 meshes are mixed according to the weight ratio of 5:95 to obtain the inorganic dispersant for later use.
(2) Mixing polymethacrylate, acrylate monomer, ethyl cyanoacetate, formaldehyde and condensing agent, stirring, heating at 70 ℃ for reaction for 1h, heating to 110 ℃, distilling under reduced pressure to obtain fraction, cooling, adding the inorganic dispersant, polymerization inhibitor, photoinitiator, anti-aging agent, fluorescent agent, leveling agent, defoaming agent and thixotropic agent prepared in the step (1) into the obtained cooled product, and uniformly mixing to obtain the UV dual-curing circuit board three-proofing paint.
The UV dual-curing circuit board three-proofing paint comprises the following raw materials in parts by weight:
15 parts of polymethacrylate, 45 parts of acrylate monomer (15 parts of isooctyl acrylate, 15 parts of isobornyl acrylate and 15 parts of tetrahydrofuran acrylate), 150 parts of ethyl cyanoacetate, 100 parts of formaldehyde, 0.5 part of condensing agent, 0.5 part of polymerization inhibitor, 8 parts of photoinitiator, 2 parts of anti-aging agent, 0.5 part of fluorescent agent, 0.5 part of flatting agent, 0.5 part of defoaming agent, 0.5 part of thixotropic agent and 1 part of inorganic dispersant.
Example 7
A preparation method of UV double-curing circuit board conformal coating comprises the following steps:
(1) preparing two kinds of zinc oxide with different grain diameters
And mixing 200-mesh and 800-mesh zinc oxide according to the weight part ratio of 20:80 to obtain the inorganic dispersant for later use.
(2) Mixing polymethacrylate, acrylate monomer, ethyl cyanoacetate, formaldehyde and condensing agent, stirring, heating at 70 ℃ for reaction for 1h, heating to 110 ℃, distilling under reduced pressure to obtain fraction, cooling, adding the inorganic dispersant, polymerization inhibitor, photoinitiator, anti-aging agent, fluorescent agent, leveling agent, defoaming agent and thixotropic agent prepared in the step (1) into the obtained cooled product, and uniformly mixing to obtain the UV dual-curing circuit board three-proofing paint.
The UV dual-curing circuit board three-proofing paint comprises the following raw materials in parts by weight:
15 parts of polymethacrylate, 45 parts of acrylate monomer (15 parts of isooctyl acrylate, 15 parts of isobornyl acrylate and 15 parts of tetrahydrofuran acrylate), 150 parts of ethyl cyanoacetate, 100 parts of formaldehyde, 0.5 part of condensing agent, 0.5 part of polymerization inhibitor, 8 parts of photoinitiator, 2 parts of anti-aging agent, 0.5 part of fluorescent agent, 0.5 part of flatting agent, 0.5 part of defoaming agent, 0.5 part of thixotropic agent and 1 part of inorganic dispersant.
Example 8
A preparation method of UV double-curing circuit board three-proofing paint comprises the following steps:
the difference from example 1 is that in S02, mixing is performed by high speed stirring, which is determined by the following formula:
wherein R is the stirring speed and the unit is rpm; c is the mass content of the inorganic dispersant, Cs is the standard mass content of the inorganic dispersant, and the value is 1%; runitTaking the stirring speed as a standard unit, and taking the stirring speed at 1000 rpm; k1And K2The adjustment coefficients are respectively 3.5-5 and 2-3.
The stirring speed determined by the formula of the embodiment is short in time and good in mixing and dispersing effects, unnecessary energy waste is avoided, and the probability of failure of the stirring system is reduced.
Comparative example 1
A preparation method of UV double-curing circuit board three-proofing paint comprises the following steps:
the difference from example 1 is that the inorganic dispersant includes only 800 mesh calcium carbonate.
Comparative example 2
A preparation method of UV double-curing circuit board three-proofing paint comprises the following steps:
the difference from example 1 is that the inorganic dispersant includes only calcium carbonate of 200 mesh.
Experimental example 1 mechanical Properties
Cleaning the surface of the PCBA board, removing dust, oil stains and flux residues on the surface of the base material, pouring the three-proofing paint obtained in the examples and the comparative examples into a container (with a real-time stirring device) of a spray gun and spraying equipment, uniformly spraying the three-proofing paint on the PCBA board,and making a round trip twice. Then firstly the wave length is 365nm and the energy is 500mj/cm2And (3) carrying out UV curing on the LED light source, standing for 2-5 h at the temperature of 25 +/-3 ℃ and the humidity of 45-55%, and carrying out moisture curing until the coating is completely dried to obtain the UV double-curing circuit board three-proofing paint coating. The mechanical properties were measured.
The results show that the UV dual-curing circuit board three-proofing paints obtained in examples 1-7 and comparative example 1/2 have tensile strength of more than 6.0MPa, elongation at break of more than 360%, peel strength of more than 25Nmm, and no scratch on the SArd70 pencil hardness HB. Of these, the tensile strength and elongation at break of example 3 were slightly poor, but they were not statistically significant and the difference was not significant.
Experimental example 2 Electrical Properties
The three-proofing paint coating obtained in experimental example 1 was measured for Dry and Wet Dielectric strength (Dry) and Dielectric strength (Wet) according to ASTM D115, and Dielectric constant (Permitity) according to IEC60250(10 kHz).
The results showed that the three-proofing varnish obtained in example 1 had a dry dielectric strength of 4800Volts/mil, a wet dielectric strength of 4400Volts/mil and a dielectric constant of 3.0. Examples 2-4 were similar to example 1 with no significant differences. The three-proofing paint obtained in example 5 has dry insulation strength of 4900Volts/mil, wet insulation strength of 4500Volts/mil and dielectric constant of 3.2, which is remarkably superior to that of example 1. The three-proofing paint obtained in example 6 has the dry insulation strength of 4750Volts/mil, the wet insulation strength of 4450Volts/mil and the dielectric constant of 3.1, which is slightly lower than that of example 1, wherein the dry insulation strength difference is significant and has statistical significance. Comparative example 1 is similar to example 6, but the difference in both dry and wet dielectric strength is significant. Comparative example 2 and example 7 all had slightly poorer dry dielectric strength, wet dielectric strength and dielectric constant than example 1, but comparative example 2 did not differ significantly and example 7 did differ significantly.
The significant difference refers to P < 0.05.
While the preferred embodiments and examples of the present invention have been described in detail, the present invention is not limited to the embodiments and examples, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (10)
1. The UV double-curing circuit board three-proofing paint is characterized by comprising the following raw materials in parts by weight:
10-20 parts of polymethacrylate, 40-50 parts of acrylate monomer, 160 parts of ethyl cyanoacetate 140-containing material, 80-120 parts of formaldehyde, 0.2-1 part of condensing agent, 0.2-1 part of polymerization inhibitor, 5-10 parts of photoinitiator, 1-5 parts of anti-aging agent, 0.1-1 part of fluorescent agent, 0.2-1 part of flatting agent, 0.2-1 part of defoaming agent, 0.2-1 part of thixotropic agent and 0.5-5 parts of inorganic dispersing agent.
2. The circuit board three-proofing paint according to claim 1, which is characterized by comprising the following raw materials in parts by weight: 15 parts of polymethacrylate, 45 parts of acrylate monomer (15 parts of isooctyl acrylate, 15 parts of isobornyl acrylate and 15 parts of tetrahydrofuran acrylate), 150 parts of ethyl cyanoacetate, 100 parts of formaldehyde, 0.5 part of condensing agent, 0.5 part of polymerization inhibitor, 8 parts of photoinitiator, 2 parts of anti-aging agent, 0.5 part of fluorescent agent, 0.5 part of flatting agent, 0.5 part of defoaming agent, 0.5 part of thixotropic agent and 0.5-5 parts of inorganic dispersant.
3. The circuit board three-proofing paint according to claim 1 or 2, wherein the acrylate monomer is at least one of isooctyl acrylate, isobornyl acrylate and tetrahydrofurfuryl acrylate.
4. The circuit board three-proofing paint according to any one of claims 1-3, wherein the inorganic dispersant is 1-2 parts.
5. The three-proofing paint for circuit boards as claimed in any one of claims 1 to 4, wherein the inorganic dispersant is at least one of calcium carbonate, titanium dioxide, talc, iron oxide, zinc oxide and iron oxide yellow.
6. The circuit board three-proofing paint according to any one of claims 1-5, wherein said inorganic dispersant comprises particles of two different particle sizes.
7. The three-proofing paint for circuit boards as claimed in any one of claims 1-6, wherein the two different particle sizes of the inorganic dispersant are 180-220 mesh and 750-850 mesh respectively.
8. The three-proofing paint for circuit boards according to any one of claims 1 to 7, wherein the weight ratio of two different particle sizes (large particles: small particles) in the inorganic dispersant is (5-50): (50-95).
9. The preparation method of the UV double-curing circuit board three-proofing paint according to any one of claims 1-8, characterized by comprising the following steps:
s01, preparing two inorganic dispersants of particles with different particle sizes;
s02, mixing polymethacrylate, acrylate monomer, ethyl cyanoacetate, formaldehyde and condensing agent, stirring, heating for reaction, heating and decompressing to distill fraction, cooling, adding the inorganic dispersant, polymerization inhibitor, photoinitiator, anti-aging agent, fluorescent agent, leveling agent, defoaming agent and thixotropic agent prepared in the step S01 into the obtained cooled product, and mixing to prepare the UV dual-curing circuit board three-proofing paint.
10. The UV dual-curing circuit board conformal coating according to any one of claims 1-9, wherein in S02, the reaction is performed by heating at 65-75 ℃ for 1-12h, and then the temperature is increased to 110-120 ℃ for reduced pressure distillation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210245272.2A CN114591638A (en) | 2022-03-14 | 2022-03-14 | UV double-curing circuit board three-proofing paint and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210245272.2A CN114591638A (en) | 2022-03-14 | 2022-03-14 | UV double-curing circuit board three-proofing paint and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114591638A true CN114591638A (en) | 2022-06-07 |
Family
ID=81818167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210245272.2A Pending CN114591638A (en) | 2022-03-14 | 2022-03-14 | UV double-curing circuit board three-proofing paint and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114591638A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5388198A (en) * | 1977-01-13 | 1978-08-03 | Toshiba Corp | Complex dielectric for capacitor |
| JP2001233669A (en) * | 2000-02-24 | 2001-08-28 | Ngk Spark Plug Co Ltd | High-permittivity composite material and printed circuit board and multilayer printed circuit board using the same |
| CN101154479A (en) * | 2003-04-04 | 2008-04-02 | 东丽株式会社 | Dielectric composition, capacitor and light wiring using the dielectric composition |
| CN111607333A (en) * | 2020-07-01 | 2020-09-01 | 深圳市鑫东邦科技有限公司 | Instant-drying adhesive |
| CN113444384A (en) * | 2021-07-21 | 2021-09-28 | 深圳市希顺有机硅科技有限公司 | UV-moisture dual-curing three-proofing paint and preparation method and application thereof |
-
2022
- 2022-03-14 CN CN202210245272.2A patent/CN114591638A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5388198A (en) * | 1977-01-13 | 1978-08-03 | Toshiba Corp | Complex dielectric for capacitor |
| JP2001233669A (en) * | 2000-02-24 | 2001-08-28 | Ngk Spark Plug Co Ltd | High-permittivity composite material and printed circuit board and multilayer printed circuit board using the same |
| CN101154479A (en) * | 2003-04-04 | 2008-04-02 | 东丽株式会社 | Dielectric composition, capacitor and light wiring using the dielectric composition |
| CN111607333A (en) * | 2020-07-01 | 2020-09-01 | 深圳市鑫东邦科技有限公司 | Instant-drying adhesive |
| CN113444384A (en) * | 2021-07-21 | 2021-09-28 | 深圳市希顺有机硅科技有限公司 | UV-moisture dual-curing three-proofing paint and preparation method and application thereof |
Non-Patent Citations (1)
| Title |
|---|
| 李建军: "《塑料配方设计》", 31 May 2019, 中国轻工业出版社 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0713930B1 (en) | Aqueous silver composition | |
| US7005474B2 (en) | Epoxy polyester, its emulsion and its preparation as well as water-base coatings containing the emusion | |
| CN111171704B (en) | Intrinsic flame-retardant cable head flash sealing coating and preparation method thereof | |
| CN112592639B (en) | Preparation method of ultraviolet curing insulating paint for enameled wire | |
| WO2006038651A1 (en) | Active energy ray-curable coating composition and method for forming coating film | |
| GB2407094A (en) | Energy curable coating compositions | |
| CN112029070A (en) | Water-based epoxy resin, preparation method thereof and water-based epoxy insulating impregnating varnish | |
| CN114591638A (en) | UV double-curing circuit board three-proofing paint and preparation method thereof | |
| CN1133178C (en) | Coating which is resistant to partial discharges, for enamelled wire | |
| CN111040541A (en) | Water-based acrylic amino baking paint and preparation method thereof | |
| CN1213117C (en) | Polyamide acid varnish compsns. and flexible printing base plate | |
| CN114133845A (en) | LED spraying white primer and preparation method thereof | |
| JPS6019609B2 (en) | Manufacturing method of insulated wire | |
| CN110951382B (en) | Environment-friendly three-proofing paint and preparation method thereof | |
| CN111978914A (en) | UV-LED and moisture dual-curing three-proofing adhesive and preparation method thereof | |
| CN110760238B (en) | Powder coating and preparation method thereof | |
| CN112608663A (en) | Quick-drying benzene-free alkyd coating and preparation method thereof | |
| CN112029030A (en) | Water-based acrylic resin for organic silicon modified glass paint and preparation method and application thereof | |
| CN113444384A (en) | UV-moisture dual-curing three-proofing paint and preparation method and application thereof | |
| CN114255908A (en) | Acid and alkali resistant salt-fog-resistant medium slurry and preparation method thereof | |
| KR101208665B1 (en) | Hybrid-type coating composition for pcm back | |
| CN101875755A (en) | Heat-resistant insulating macromolecular composite material preparation method thereof | |
| KR102273368B1 (en) | Eco-friendly green lacquer composition and preparation methoed therof | |
| CN108503813B (en) | Curing agent for carboxyl resin, preparation method and application composition | |
| CN115216094B (en) | Resin composition for high-frequency low-dielectric-loss copper-clad plate and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |