CN105482615A - LDS powdery coating and preparation method thereof - Google Patents
LDS powdery coating and preparation method thereof Download PDFInfo
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- CN105482615A CN105482615A CN201510723950.1A CN201510723950A CN105482615A CN 105482615 A CN105482615 A CN 105482615A CN 201510723950 A CN201510723950 A CN 201510723950A CN 105482615 A CN105482615 A CN 105482615A
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Abstract
A disclosed LDS (LaserDirect-Structuring) powdery coating comprises, in parts by weight, 58-98% of resin, 5-10% of LDS laser powder, 0.5-2% of a levelling agent, and 0-40% of a filler, wherein the LDS laser powder is a metal organic compound. The invention also discloses a preparation method for the coating. The preparation method comprises mixing the composition powders, blending, granulating and crushing, so as to obtain the LDS powdery coating. The provided LDS powdery coating possesses good adhesive force, excellent in acid and alkali resistance and high in physical performances, and can be uniformly distributed on a base material, and the adhesive-force grade can reach 1 grade or more. By adding the levelling agent and other reagents, resin rheological property is improved, and the laser powder is relatively well dispersed in resin. The coating thickness of the provided laser powdery coating can reach 60-80 mu m, the coating can satisfy laser etching demand of handset antennas and wireless induction coils, and a prepared antenna is strong in signal reception capability.
Description
Technical field
The invention belongs to technical field of coatings, be specifically related to a kind of LDS powder coating and preparation method thereof.
Background technology
Flourish due to Information of Science and Technology, driven the progress of wireless communication technology, mobile communications device becomes the tool of communications of modern's indispensability.Therefore, function of cellular phone demand is also increased day by day.The necessary raising frequency of electric wave due to radio communication, carrier wave, just can be effective multiplex (MUX) and transmit, so just must can carry out these actions by antenna.Therefore antenna is considerable element in Wireless Telecom Equipment.
Antenna is normally made up of radio-frequency (RF) component and matrix fixed support thereof.Radio-frequency (RF) component is the metalwork of definite shape or flexible printed circuit board or printed circuit board.Recently the manufacturing technology of mold interconnecting circuit element (MoldedInterconnectDevice, MID) antenna has been developed, to configure antenna on the casing of mobile communications device.The making of MID antenna mainly forms the metal level of antenna by electroless plating (chemicalplating) mode on injection moulding plastic part surface.
Along with the appearance of first 4GLTE equipment in 2011, a kind of new technology---laser direct forming (Laser-Direct-Structuring, LDS) manufacturing technology is increasingly used for the mobile phone especially Antenna Design of smart mobile phone and manufacture.LDS refers to and first forms a substrate with plastic cement injection operation, form the coating doping metals additive of substrate, metallic additions wherein can by laser activation, and pre-setting becomes antenna place to carry out laser activation on the surface of the substrate, and the region surface in laser activation plates metal level again as antenna.
Current LDS technique is mainly at PC; the metallics such as parcel plating Cu/Ni, Ag, Au on PA+GF plastic workpiece; shaping workpiece plastics and metal plating have 12 ~ 15 microns of steps; so for at the coating of LDS technique as the substrate of appearance effect and defencive function, have higher requirement.
Summary of the invention
The object of the invention is to solve deficiency of the prior art, there is provided a kind of LDS powder coating, it has excellent physico-chemical property, and base material is evenly distributed, the laser ablation requirement of antenna for mobile phone and wireless induction coil can be met, present invention also offers the preparation method of this LDS powder coating.
First aspect of the present invention is to provide a kind of LDS powder coating, and according to weight percent meter, the component of described LDS powder coating comprises: resin 58-98%, LDS laser powder 5-10%, flow agent 0.5-2%, filler 0-40%; Described LDS laser powder is organometallics.
Further, described resin comprises at least two kinds of crosslinkable thermoplastic resins, and/or at least one thermosetting resin; Or described resin is a kind of thermoplastic resin, described LDS powder also comprises solidifying agent 0.5-25%.
Further, described resin comprises at least two kinds of crosslinkable thermoplastic resins, and described LDS powder also comprises solidifying agent 0.5-25%.
Further, described solidifying agent is one or more in dicy-curing agent, imidazole curing agent, modified multicomponent amine hardener, polyprotonic acid solidifying agent and polyphenol solidifying agent.
Further, described resin is one or more in epoxy resin, resol, acrylate and urethane.
Further, according to the total amount of LDS powder coating, described resin comprises: bisphenol A type epoxy resin 29-49%, carboxyl-type polyester resin 29-49%.
Further, the proportioning of bisphenol A type epoxy resin and carboxyl-type polyester resin is 1:1.
Further, described Fillers selection process white, carbon black.
Further, according to the total amount of LDS powder coating, described filler comprises: process white 0-37% and carbon black 0-0.8%.
Further, according to weight percent meter, the component of described LDS powder coating comprises: bisphenol A type epoxy resin 29-49%, carboxyl-type polyester resin 29-49%, LDS laser powder 5-10%, flow agent 0.8-1.5%, process white 0-37%, carbon black 0-0.8%.
Further, according to weight percent meter, the component of described LDS powder coating comprises: bisphenol A type epoxy resin 35-45%, carboxyl-type polyester resin 35-45%, LDS laser powder 6-9%, flow agent 1%, process white 0-37%, carbon black 0-0.8%.
Further, described flow agent is one or more in the positive butyl ester of acrylic copolymer, polymethylmethacrylate and polyacrylic acid.
Second aspect of the present invention is to provide the preparation method of the LDS powder coating described in a kind of the present invention first aspect: by each component powders pre-mixing, mixing, granulation, pulverizing, to obtain final product.
If component has bulk, need first to be pulverized.
Further, described pre-mixing is carried out telling in mixing machine.
Further, the mixing time of described pre-mixing is 5-10min
Further, describedly mixingly to carry out in mixing roll.
Further, described mixing temperature 100-110 DEG C.
Further, the described mixing time is 2-4min, is preferably 3min.
Further, also step is comprised: sieve.
Compared with prior art, beneficial effect of the present invention is as follows:
LDS powder coating provided by the invention has good sticking power, and sticking power grade can reach more than 1 grade, and acid-proof alkaline is excellent, and physicals is strong, can be evenly distributed on base material; The present invention adds the rheological that flow agent etc. can improve resin, laser powder is made to be scattered in resin preferably, and the coat-thickness of laser powder coating provided by the invention can reach 60-80um, can meet the laser ablation demand of antenna for mobile phone and wireless induction coil, the received antenna signal ability be prepared from is strong.
Figure of description
Fig. 1 is antenna RF detected result.
Embodiment
In order to meet wireless communication technology development better, the invention provides a kind of LDS powder coating, according to weight percent meter, the component of described LDS powder coating comprises: resin 58-98%, LDS laser powder 5-10%, flow agent 0.5-2%, filler 0-40%.
Described resin comprises at least two kinds of crosslinkable thermoplastic resins, and/or at least one thermosetting resin; Or described resin is a kind of thermoplastic resin, described LDS powder also comprises solidifying agent 0.5-25%.When described resin comprises at least two kinds of crosslinkable thermoplastic resins, described LDS powder still can comprise solidifying agent.The sticking power of resin described in application claims to metal or pottery is good, wear-resisting, corrosion-resistant, resistance to boiling water boiling, such as, in epoxy resin, resol, acrylate and urethane one or more.The present invention preferably uses bisphenol A type epoxy resin and carboxyl-type polyester resin to be cross-linked, and bisphenol A type epoxy resin accounts for the 29-49% of coating gross weight, and carboxyl-type polyester resin accounts for the 29-49% of coating gross weight.Further preferably, bisphenol A type epoxy resin accounts for the 35-45% of coating gross weight, and carboxyl-type polyester resin accounts for the 35-45% of coating gross weight.Still more preferably, the proportioning of bisphenol A type epoxy resin and carboxyl-type polyester resin is 1:1.
Described solidifying agent can be one or more in dicy-curing agent, imidazole curing agent, modified multicomponent amine hardener, polyprotonic acid solidifying agent and polyphenol solidifying agent.
Described LDS laser powder is organometallics, accounts for the 5-10% of coating gross weight, ensures form abundant electroless plating site under laser ablation, to ensure follow-up plating copper and nickel.
If needed, this coating can add filler, and object is the opacifying power strengthening coating.Operable filler has process white, carbon black etc.Preferably, according to the total amount of LDS powder coating, process white is 0-37%, and carbon black is 0-0.8%.
Described flow agent is one or more in the positive butyl ester of acrylic copolymer, polymethylmethacrylate and polyacrylic acid.
Below in conjunction with the embodiment of the present invention, be clearly and completely described technical scheme of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment 1
A kind of LDS powder coating, according to weight percent meter, its component comprises: bisphenol A type epoxy resin 40%, carboxyl-type polyester resin 40%, LDS laser powder 8%, flow agent 1%, process white 10.5%, carbon black 0.5%.
Pulverized by block, dropped into by all components in high-speed mixer and carry out pre-mixing, mixing time is 5-10min.Raw material after premix is put into mixing roll to carry out mixing, and melting temperature is 100-110 DEG C, and mixing time is 3min.Then granulation, pulverizes, sieves, to obtain final product.
Embodiment 2-8
The difference of embodiment 2-8 and embodiment 1 is component proportion, and the component proportion of embodiment 2-8 is as shown in table 1:
The component proportion (%) of table 1 embodiment 2-8
| Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Embodiment 6 | Embodiment 7 | Embodiment 8 | |
| Bisphenol A type epoxy resin | 35 | 45 | 49 | 43.2 | 58.1 | - | - |
| Carboxyl-type polyester resin | 35 | 45 | 29 | 49 | - | 77.6 | 35 |
| LDS laser powder | 9 | 6 | 10 | 7 | 5 | 10 | 10 |
| Flow agent | 1 | 1 | 1.5 | 0.8 | 1 | 1 | 1 |
| Process white | 19.2 | 2.9 | 10.5 | 0 | 10.4 | 10.4 | 10.4 |
| Carbon black | 0.8 | 0.1 | 0 | 0 | 0.5 | 0.5 | 0.5 |
| Urethane | - | - | - | - | - | - | 28.1 |
| Solidifying agent | - | - | - | - | 25 | 0.5 | 15 |
Adopted by powder coating obtained for embodiment 1-8 electrostatic spraying to be sprayed on metal (aluminium alloy, stainless steel, titanium alloy) or pottery (zirconia ceramic, SiO 2-ceramic etc.) plate surface, make test sample.Spraying temperature is between 180-200 degree Celsius, allows coating reaction crosslinking curing, figure layer thickness be 60-80um.
1, hundred lattice scratch method test paint adhesions are used: result sticking power all reaches more than 1 grade.
2, boiling water boiling 1h: result without without variable color, bubble-free.
3, acid resistance: join the sulfuric acid that concentration is 5wt%, soaks after 24 hours and observes, and without variable color, bubbles, corrosion etc.
4, alkali resistance: to embodiment 1-5 Progressive symmetric erythrokeratodermia quality detection: join the NAOH solution that concentration is 5wt%, soaks after 24 hours and observes, and without variable color, bubbles, corrosion etc.
5, physico-chemical property detects:
Shock strength >50KJ/m
2;
Tensile strength >100MPa;
Flexural strength >140MPa;
6, the antenna pattern using laser ablation method to go out to design in coating (embodiment 1) surface etch, uses the copper facing on pattern of electroless copper (nickel) method.By radio frequency method test signal receiving capability.Electroless copper recommended formula is as follows: copper sulfate 5g/L, tartrate first sodium 25g/L, sodium hydroxide 7g/L, formaldehyde 10g/L, stablizer 0.1g/L.Detected result as shown in Figure 1, shows that the received antenna signal ability adopting the embodiment of the present invention 1 to be prepared from is strong.After the same method, adopt the obtained coating of embodiment 2-8 to be prepared into antenna, it all has signal reception, and embodiment 2-3 is slightly worse than embodiment 1, and embodiment 4-5 is slightly worse than embodiment 2-3, and embodiment 6-7 is slightly worse than embodiment.
Upper content is in conjunction with concrete preferred implementation further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, some simple deduction or replace can also be made, all should be considered as belonging to protection scope of the present invention.
Claims (10)
1. a LDS powder coating, is characterized in that, according to weight parts, the component of described LDS powder coating comprises: resin 58-98%, LDS laser powder 5-10%, flow agent 0.5-2%, filler 0-40%; Described LDS laser powder is organometallics.
2. LDS powder coating according to claim 1, is characterized in that, described resin comprises at least two kinds of crosslinkable thermoplastic resins, and/or at least one thermosetting resin; Or described resin is a kind of thermoplastic resin, described LDS powder also comprises solidifying agent 0.5-25%.
3. LDS powder coating according to claim 2, is characterized in that, described resin is one or more in epoxy resin, resol, acrylate and urethane.
4. LDS powder coating according to claim 3, is characterized in that, according to the total amount of LDS powder coating, described resin comprises: bisphenol A type epoxy resin 29-49%, carboxyl-type polyester resin 29-49%.
5. LDS powder coating according to claim 4, is characterized in that, the proportioning of bisphenol A type epoxy resin and carboxyl-type polyester resin is 1:1.
6. according to the LDS powder coating in claim 1 described in any one, it is characterized in that, described Fillers selection process white, carbon black.
7. LDS powder coating according to claim 6, is characterized in that, according to the total amount of LDS powder coating, described filler comprises: process white 0-37% and carbon black 0-0.8%.
8. the LDS powder coating according to claim 1-7, it is characterized in that, according to weight percent meter, the component of described LDS powder coating comprises: bisphenol A type epoxy resin 29-49%, carboxyl-type polyester resin 29-49%, LDS laser powder 5-10%, flow agent 0.8-1.5%, process white 0-37%, carbon black 0-0.8%.
9. according to Claim 8 described in LDS powder coating, it is characterized in that, according to weight percent meter, the component of described LDS powder coating comprises: bisphenol A type epoxy resin 35-45%, carboxyl-type polyester resin 35-45%, LDS laser powder 6-9%, flow agent 1%, process white 0-37%, carbon black 0-0.8%.
10., as a preparation method for the LDS powder coating in claim 1-9 as described in any one, it is characterized in that, by the mixing of each component powders, mixing, granulation, pulverizing, both.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510723950.1A CN105482615A (en) | 2015-10-30 | 2015-10-30 | LDS powdery coating and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510723950.1A CN105482615A (en) | 2015-10-30 | 2015-10-30 | LDS powdery coating and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107652842A (en) * | 2017-10-17 | 2018-02-02 | 江苏赛博宇华科技有限公司 | A kind of antenna for mobile phone |
| CN108219630A (en) * | 2018-02-08 | 2018-06-29 | 南京湘珀新材料科技有限公司 | It is a kind of can laser activation LDS coating and its preparation method and application |
| CN108822602A (en) * | 2018-07-12 | 2018-11-16 | 无锡赢同新材料科技有限公司 | Powder material spray, preparation and application with laser direct organization function |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103756472A (en) * | 2013-12-18 | 2014-04-30 | 东莞劲胜精密组件股份有限公司 | Laser-activable LDS (Laser Direct Structuring) natural coating |
| CN104341982A (en) * | 2014-10-31 | 2015-02-11 | 安徽神剑新材料股份有限公司 | Powder coating |
| CN104497795A (en) * | 2014-11-17 | 2015-04-08 | 广东朗法博涂装新材料科技有限公司 | Negative ion-released antibacterial powdery paint |
| CN105153862A (en) * | 2015-09-30 | 2015-12-16 | 上海亮直科技发展有限公司 | Laser-induced metalized heatproof paint and preparation method thereof |
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2015
- 2015-10-30 CN CN201510723950.1A patent/CN105482615A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103756472A (en) * | 2013-12-18 | 2014-04-30 | 东莞劲胜精密组件股份有限公司 | Laser-activable LDS (Laser Direct Structuring) natural coating |
| CN104341982A (en) * | 2014-10-31 | 2015-02-11 | 安徽神剑新材料股份有限公司 | Powder coating |
| CN104497795A (en) * | 2014-11-17 | 2015-04-08 | 广东朗法博涂装新材料科技有限公司 | Negative ion-released antibacterial powdery paint |
| CN105153862A (en) * | 2015-09-30 | 2015-12-16 | 上海亮直科技发展有限公司 | Laser-induced metalized heatproof paint and preparation method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107652842A (en) * | 2017-10-17 | 2018-02-02 | 江苏赛博宇华科技有限公司 | A kind of antenna for mobile phone |
| CN108219630A (en) * | 2018-02-08 | 2018-06-29 | 南京湘珀新材料科技有限公司 | It is a kind of can laser activation LDS coating and its preparation method and application |
| CN108219630B (en) * | 2018-02-08 | 2020-06-30 | 南京湘珀新材料科技有限公司 | Laser-activatable LDS coating and preparation method and application thereof |
| CN108822602A (en) * | 2018-07-12 | 2018-11-16 | 无锡赢同新材料科技有限公司 | Powder material spray, preparation and application with laser direct organization function |
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Application publication date: 20160413 |
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