WO2021095914A1 - Antenna device, manufacturing method therefor, and shark fin antenna comprising same - Google Patents

Abstract

The present invention relates to an antenna device, a manufacturing method therefor, and a shark fin antenna comprising same, and, more specifically, to an antenna device, a manufacturing method therefor, and a shark fin antenna comprising same, the antenna device comprising 80-99.9 wt% of a resin ingredient and 0.1-20 wt% of a laser direct structuring (LDS) additive, wherein the LDS additive is a metal compound surface-modified with an aminosilane. According to the present invention, provided are: an antenna device, which implements excellent mechanical properties without the deterioration of plating characteristics such as plating adhesive strength so as to have excellent reliability, and can implement an integrated circuit for electronic components; a manufacturing method therefor; and a shark fin antenna comprising same. [Representative drawing] figure 5

Description

Antenna mechanism, manufacturing method thereof, and shark antenna including same

The present invention relates to an antenna mechanism, a method of manufacturing the same, and a shark antenna including the same, and more particularly, excellent mechanical properties are implemented without deterioration of plating properties such as plating adhesion, resulting in excellent reliability, and an integrated circuit for electronic components is possible. It relates to an antenna device, a method of manufacturing the same, and a shark antenna including the same.

Currently, manufacturing electric parts through a laser direct structuring (LDS) process is receiving a lot of attention. The laser direct structuring process is a process performed before the plating step, and refers to a process of modifying the plating target region by irradiating a laser to the plating target region on the surface of the molded product to have properties suitable for plating.

The laser direct structuring process should include a laser direct structuring additive capable of forming a metal nucleus by a laser, which is decomposed when receiving a laser to generate a metal nucleus, and the area irradiated with the laser has a roughened surface. Due to the metal core and surface roughness, the laser-modified region is suitable for plating without using an adhesive or the like.

Recently, in accordance with the trend of reducing product weight and thinning, an antenna device having excellent mechanical properties is required, but the conventional antenna device has a problem in that mechanical properties are severely deteriorated.

In addition, in the small LDS antenna to which the antenna mechanism is applied, the demand for efficient use of a narrow terminal interior space is increasing due to the recent technological trend in which the antenna metal pattern, that is, the pattern of the radiator, is becoming complex due to the recent multi-band antenna.

However, if the size is too small, the pattern shape of the radiator is severely restricted, the matchability and fastening with other parts are poor, and in particular, the reliability of the antenna is deteriorated.

Accordingly, there is a need for development of an antenna mechanism capable of implementing excellent mechanical properties without deterioration in plating properties such as plating adhesion, and a small antenna having excellent reliability and integrity including the same.

[Prior technical literature]

[Patent Literature]

(Patent Document 1) Korean Patent Registration No. 10-1297630

In order to solve the problems of the prior art as described above, the present invention has excellent mechanical properties without deterioration of plating properties such as plating adhesion, has excellent reliability, and includes an antenna mechanism capable of implementing an integrated circuit for electronic components, a method of manufacturing the same, and the same. It is an object of the present invention to provide a Shark antenna.

All of the above and other objects of the present invention can be achieved by the present invention described below.

In order to achieve the above object, the present invention is formed including 80 to 99.9% by weight of a resin component and 0.1 to 20% by weight of a laser direct molding (LDS) additive, wherein the laser direct molding (LDS) additive is an aminosilane. It provides an antenna device, characterized in that the surface-modified metal compound.

The antenna mechanism is preferably independently plated in the LDS method, at least one antenna metal pattern selected from the group consisting of a radio band antenna metal pattern, a DMB band antenna metal pattern, an LTE band antenna metal pattern, and a GPS band antenna metal pattern. Is formed.

The metal is preferably copper, nickel or gold.

The antenna metal pattern preferably has a voltage standing wave ratio (VSWR) of 4 or less.

The resin component is preferably at least one selected from the group consisting of polyarylene sulfide resin, polyamide resin, polyester resin, polycarbonate resin, polyarylene ether resin, and liquid crystal polymer (LCP).

The aminosilane is preferably the following formula (1)

[Formula 1]

(The R ₁ to R ₅ are independently hydrogen or an alkyl group having 1 to 5 carbon atoms, and R'is an alkylene group having 2 to 10 carbon atoms.)

The laser direct molding (LDS) additive preferably includes 95 to 99.9% by weight of a metal compound and 0.1 to 5% by weight of an aminosilane bonded to the surface of the metal compound.

The metal compound preferably has an average particle diameter of 0.05 to 20 µm.

The metal compound is preferably a metal compound whose surface is hydroxylated.

The metal is preferably at least one selected from the group consisting of magnesium, copper, cobalt, zinc, tin, iron, manganese and nickel, titanium, aluminum and chromium.

The antenna device is preferably formed by including 20 to 40 parts by weight of a reinforcing material based on a total of 100 parts by weight of the resin component and the laser direct molding (LDS) additive.

The reinforcing material is preferably at least one selected from the group consisting of glass fibers, talc, wollastonite, whisker, silica, mica and basalt fibers.

In addition, the present invention comprises the steps of: a) mixing 0.1 to 20% by weight of a metal compound surface-modified with aminosilane and 80 to 99.9% by weight of a resin component as a laser direct molding (LDS) additive, and then extruding with an extruder to prepare a pellet; And b) manufacturing an injection product by injection molding the manufactured pellets.

The method of manufacturing the antenna device preferably comprises the steps of: v) forming a conductive path in the molded article using a laser; And vi) plating a metal layer on the conductive path.

In addition, the present invention provides a shark antenna comprising the antenna mechanism of the present invention and a printed circuit board (PCB) electrically connected thereto.

According to the present invention, excellent mechanical properties are implemented without deterioration of plating properties such as plating adhesion, so that reliability is excellent, and there is an effect of providing an antenna mechanism capable of implementing an integrated circuit for electronic components, a manufacturing method thereof, and a shark antenna including the same.

1 is a plan view (a) and a right side view (b) of an exterior of a shark antenna according to an embodiment of the present invention.

2 is a photograph taken from the left (a), upper (b) and rear (c) of an antenna device (injection) according to an embodiment of the present invention.

3 is a right side view (a), a left side view (b), and a top view (c) of an antenna device on which a metal pattern is formed according to an embodiment of the present invention.

4 is a photograph of a printed circuit board (PCB) for mounting an antenna according to an embodiment of the present invention.

5 is a picture taken from the left (a), right (b) and rear (c) of the inside of the shark antenna according to an embodiment of the present invention.

6 is a photograph of a carrier pedestal and a printed circuit board (inside) for mounting an antenna coupled thereto according to an embodiment of the present invention.

7 and 8 are graphs and corresponding values showing results of measuring a voltage standing wave ratio (VSWR) after a low or high temperature reliability test of an antenna according to an embodiment of the present invention, respectively.

9 is a TGA graph showing that 1% by weight of aminosilane is attached to the surface of a metal compound.

10 is an exemplary view showing a process of introducing a hydroxyl group to the surface of a metal compound.

11 is an exemplary view showing a process of introducing an aminosilane group to the surface of a hydroxylated metal compound.

12 is a TEM photograph of a 50,000-fold magnification of the surface of a hydroxylated metal compound.

13 is a TEM photograph of a 250,000-fold magnification of the surface of a hydroxylated metal compound.

FIG. 14 is a TEM photograph showing between a plurality of metal compounds after modifying the surface of a hydroxylated metal compound with aminosilane.

15 is a TEM photograph showing an outer portion of a metal compound after modifying the surface of a hydroxylated metal compound with aminosilane.

Hereinafter, the antenna mechanism of the present disclosure, a method of manufacturing the same, and a shark antenna including the same will be described in detail.

The inventors of the present invention confirmed that when a metal compound surface-modified with aminosilane is included in the manufacture of an antenna device, the metal compound in the resin is very uniformly distributed, so that the mechanical properties are greatly improved, and that it can be applied to integrated circuit-type electronic components, etc. The invention was completed.

The antenna device of the present invention is formed by including 80 to 99.9% by weight of a resin component and 0.1 to 20% by weight of a laser direct molding (LDS) additive, wherein the laser direct molding (LDS) additive is a metal compound surface-modified with aminosilane. In this case, the mechanical properties are excellent without deterioration of plating properties such as plating adhesion, so that the reliability is excellent, and there is an advantage that an integrated circuit for electronic parts can be implemented.

Hereinafter, the antenna mechanism of the present invention will be described in detail for each configuration.

Resin component

The resin component is, for example, 80 to 99.9% by weight, 85 to 99% by weight, preferably 90 to 97% by weight, more preferably 90 to 95% by weight, more preferably 91 It may be to 93% by weight, and there is an effect of excellent mechanical properties within this range.

If the resin component is less than the above range, the durability may be deteriorated, and the laser direct molding additive may be excessively dispersed in the resin, resulting in a pattern of bleeding or peeling after plating, and if it exceeds the above range, the laser direct molding additive There may be a problem in that the plating pattern is not formed due to insufficient dispersion in the resin component.

The resin component may be, for example, one or more selected from the group consisting of polyarylene sulfide resin, polyamide resin, polyester resin, polycarbonate resin, polyarylene ether resin, and liquid crystal polymer (LCP), and preferably polyarylene sulfide resin, polyamide resin, polyester resin, polycarbonate resin, polyarylene ether resin, and liquid crystal polymer (LCP). It is an arylene sulfide resin, and in this case, it has excellent durability and mechanical properties, and has excellent moldability and fastening properties.

The polyarylene sulfide resin is not particularly limited if it is a polyarylene sulfide resin commonly used in the technical field to which the present invention belongs, but may be polyphenylene sulfide (PPS) as an example, and in this case, mechanical properties are excellent. There is.

The polyarylene sulfide resin may have, for example, a melt index (316° C., 5 kg) of 30 to 150 g/min, 50 to 130 g/min, 80 to 120 g/min, or 90 to 110 g/min, , Within this range, mechanical properties such as tensile strength and flexural strength are excellent.

In this description, the melt index is measured at 316°C and 5 kg load according to ASTM D1238.

The polyamide resin is not particularly limited if it is a polyamide resin commonly used in the technical field to which the present invention belongs, but may be polyphthalamide (PPA) as an example, and in this case, it has excellent moldability and mechanical properties. .

The polyamide resin may have, for example, a number average molecular weight of 10,000 to 200,000 g/mol, preferably 20,000 to 150,000 g/mol, and has excellent heat resistance and processability within this range.

In the present description, the number average molecular weight and the weight average molecular weight were prepared by dissolving a resin in tetrahydrofuran (THF) at a concentration of 1 mg/ml, and then filtered through a 0.45 µm syringe filter, and gel chromatography (GPC) Measure using.

The polyamide resin may have an intrinsic viscosity of 0.6 to 1.2 dl/g, preferably 0.8 to 1.0 dl/g, for example, and has excellent moldability and mechanical properties within this range.

In this description, the intrinsic viscosity is measured in chloroform at 25°C.

The polyester resin is composed of polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polyethylene naphthalate (PEN), polytrimethylene terephthalate (PTT), and polycyclohexylene terephthalate (PCT), for example. It may be one or more selected from the group, and in this case, there is an effect of excellent heat resistance and mechanical properties.

The polyester resin may have an intrinsic viscosity of 0.6 to 2.0 dl/g, preferably 0.8 to 1.4 dl/g, for example, and has excellent heat resistance and mechanical properties within this range.

The polyester resin may have a weight average molecular weight of 5,000 to 30,000 g/mol, preferably 5,000 to 20,000 g/mol, for example, and has excellent mechanical properties within this range.

The polycarbonate resin is not particularly limited if it is a polycarbonate resin commonly used in the technical field to which the present invention belongs, but may be an aromatic polycarbonate and/or aliphatic polycarbonate, in this case, impact resistance, plating adhesion, and surface There are excellent effects such as hardness.

The polycarbonate resin may have, for example, a number average molecular weight of 3,000 to 100,000 g/mol, 10,000 to 75,000 g/mol, preferably 20,000 to 50,000 g/mol, and has excellent mechanical properties within this range.

The polyarylene ether resin is, for example, poly(2,6-dimethyl-1,4-phenylene ether), poly(2,6-diethyl-1,4-phenylene ether), poly(2-methyl- 6-ethyl-1,4-phenylene ether), poly(2-methyl-6-propyl-1,4-phenylene ether), poly(2,6-dipropyl-1,4-phenylene ether), Poly(2-ethyl-6-propyl-1,4-phenylene ether), poly(2,6-dimethoxy-1,4-phenylene ether), poly(2,6-di(chloromethyl)-1 ,4-phenylene ether), poly(2,6-di(bromomethyl)-1,4-phenylene ether), poly(2,6-diphenyl-1,4-phenylene ether), poly( 2,6-dichloro-1,4-phenylene ether), poly(2,6-dibenzyl-1,4-phenylene ether), poly(2,5-dimethyl-1,4-phenylene ether), Consisting of a copolymer of 2,6-dimethylphenol and 2,3,6-trimethylphenol, a copolymer of 2,6-dimethylphenol and o-cresol, and a copolymer of 2,3,6-trimethylphenol and o-cresol It may be one or more selected from the group, and in this case, there is an effect of excellent processability and physical property balance.

The polyarylene ether resin may have an intrinsic viscosity of 0.1 to 0.6 dl/g, preferably 0.3 to 0.5 dl/g, for example, and has an excellent effect in balance of processability and physical properties within this range.

The liquid crystal polymer is not particularly limited as long as it is a material commonly used in the technical field to which the present invention belongs.

Laser direct molding (LDS) additive

The laser direct molding additive is, for example, 0.1 to 20% by weight, 1 to 15% by weight, preferably 3 to 10% by weight, more preferably 5 to 10% by weight, more preferably, based on 100% by weight of the total antenna device. May be 7 to 9% by weight, and within this range, the laser reactivity and plating properties are excellent, and the additives are distributed very evenly in the resin, so that the mechanical properties are maintained equal to or higher than the prior art, while the plating properties are improved. There is.

The laser direct molding (LDS) additive may be, for example, a metal compound surface-modified with aminosilane, and in this case, the metal compound in the resin is very uniformly distributed, thereby improving mechanical properties.

The aminosilane may be a compound represented by the following formula (1) as a preferred example, and in this case, the metal compound in the resin is very uniformly distributed, so that mechanical properties such as tensile strength and flexural strength are greatly improved.

[Formula 1]

(The R ₁ to R ₅ are independently hydrogen or an alkyl group having 1 to 5 carbon atoms, and R'is an alkylene group having 2 to 10 carbon atoms.)

The R ₁ to R ₃ may be independently hydrogen or an alkyl group having 1 to 3 carbon atoms as an example, and R ₄ to R ₅ may be independently hydrogen as an example, and R′ may be an example of 2 to 4 carbon atoms It may be an alkylene group, and in this case, the metal compound in the resin is very uniformly distributed, thereby improving mechanical properties.

The aminosilane may be aminopropyltriethoxysilane (APTES) as a specific example, and in this case, the metal compound in the resin is very uniformly distributed to improve mechanical properties such as tensile strength and flexural strength. Has the effect of being.

The laser direct molding (LDS) additive is, for example, 95 to 99.9% by weight of a metal compound, preferably 96 to 99% by weight, more preferably 96 to 98% by weight; And, for example, 0.1 to 5% by weight, preferably 1 to 4% by weight, more preferably 2 to 4% by weight of aminosilane bonded to the surface of the metal compound, and laser irradiation within this range When the metal atoms of the metal compound in the area exposed to the laser beam are activated, the surface of the activated area is roughened to facilitate plating, and the metal compound is uniformly distributed in the resin, thereby improving mechanical properties.

The metal compound may be, for example, a metal oxide, a metal salt, or a mixture thereof, and in this case, there is an effect of excellent plating adhesion to the surface of the resin to which the laser is irradiated.

The metal oxide may be preferably a metal compound represented by the following formula (2), and in this case, the surface of the metal compound is easily modified with aminosilane, so that the metal compound is uniformly distributed in the resin, thereby having excellent mechanical properties.

[Formula 2]

XY ₂ O ₄

(The X is a metal of valence 2, and Y is a metal of valence 3.)

The metal having a valence of 2 may be one or more selected from the group consisting of magnesium, copper, cobalt, zinc, tin, iron, manganese, and nickel, for example, and in this case, laser reactivity and mechanical properties are excellent.

The metal having a valence of 3 may be one or more selected from the group consisting of manganese, nickel, copper, cobalt, tin, titanium, iron, aluminum, and chromium, for example, and in this case, laser reactivity and mechanical properties are excellent.

The metal oxides include magnesium aluminum oxide (MgAl ₂ O ₄ ), zinc aluminum oxide (ZnAl ₂ O ₄ ), iron aluminum oxide (FeAl ₂ O ₄ ), copper iron oxide (CuFe ₂ O ₄ ), copper chromium oxide as specific examples. (CuCr ₂ O ₄ ), manganese iron oxide (MnFe ₂ O ₄ ), nickel iron oxide (NiFe ₂ O ₄ ), titanium iron oxide (TiFe ₂ O ₄ ), iron chromium oxide (FeCr ₂ O ₄ ) and magnesium chromium oxide It may be one or more selected from the group consisting of (MgCr ₂ O ₄ ), and in this case, laser reactivity and mechanical properties are excellent.

The metal salt is not particularly limited as long as it is referred to as a metal salt in the technical field to which the present invention belongs, but may be a copper salt as an example, and the copper salt is a preferred example of copper phosphate, copper sulfate, It may be one or more selected from the group consisting of copper hydroxide phosphate and cuprous thiocyanate, and in this case, laser reactivity, physical property balance, and mechanical properties are excellent.

The metal compound may have, for example, an average particle diameter of 0.05 to 20 µm, 0.1 to 15 µm, preferably 0.5 to 10 µm, and when laser irradiation within this range, the laser direct molding additive is uniformly formed in the resin, and mechanical properties There is little deterioration of, and there is an effect of improving plating characteristics.

The average particle diameter refers to a number average diameter, and refers to a measurement of D50, which is a particle diameter at a point where the distribution ratio is 50%.

The average particle diameter is measured based on a laser diffraction scattering method.

The metal compound may be, for example, a metal compound whose surface is hydroxylated, and in this case, the surface of the metal compound is activated to facilitate surface modification with aminosilane, and the surface-modified metal compound is uniformly distributed in the resin to provide mechanical properties. This has the effect of improving.

The metal may be one or more selected from the group consisting of magnesium, copper, cobalt, zinc, tin, iron, manganese and nickel, titanium, aluminum, and chromium, for example, and in this case, laser reactivity and mechanical properties are excellent.

Antenna mechanism

The antenna device of the present invention is formed by including 80 to 99.9% by weight of a resin component and 0.1 to 20% by weight of a laser direct molding (LDS) additive, wherein the laser direct molding (LDS) additive is a metal compound surface-modified with aminosilane. In this case, the mechanical properties are excellent without deterioration of plating properties such as plating adhesion, so that the reliability is excellent, and there is an advantage that an integrated circuit for electronic parts can be implemented.

The antenna mechanism is preferably independently plated in the LDS method, at least one antenna metal pattern selected from the group consisting of a radio band antenna metal pattern, a DMB band antenna metal pattern, an LTE band antenna metal pattern, and a GPS band antenna metal pattern. Is formed, and in this case, there is an effect of excellent reliability even under severe conditions.

The metal may be preferably copper, nickel, or gold, but is not limited thereto.

The antenna metal pattern preferably has a voltage standing wave ratio (VSWR) of 4 or less, more preferably 3.9 or less, and even more preferably 3.8 or less, and in this case, the reliability of the antenna is excellent.

The antenna metal pattern may preferably be a linear pattern formed of one line or a branched pattern formed of two or more lines, and the linear pattern may be preferably an uneven pattern or a eddy current pattern, and the branched The pattern may preferably be a pattern formed by branching a polygonal pattern formed of one or more lines at one point of a polygonal pattern formed of a single line, and in this case, there is an advantage in that the reliability performance of the antenna is excellent.

The antenna mechanism may be freely formed within the scope of not impairing the objects and effects of the present invention according to any purpose in its shape, and preferably has a pyramidal shape, more preferably a triangular pyramidal or square pyramidal shape, in this case a shark It is possible to make the most of the space inside the carrier such as an antenna, and has excellent assembly, moldability, and fastening properties with other components such as a printed circuit board.

Since the number of angles in the pyramids of the present disclosure can be interpreted based on the number of surfaces in which the metal pattern can be formed, it is not based on only perfect pyramids.

As another example, the antenna device may include 20 to 40 parts by weight, preferably 25 to 35 parts by weight of a reinforcing material based on a total of 100 parts by weight of the resin component and the laser direct molding (LDS) additive, and within this range. In the plating properties, mechanical strength, impact resistance, heat resistance, reliability, etc. have excellent effects.

The reinforcing material may be, for example, one or more selected from the group consisting of glass fiber, talc, wollastonite, whisker, silica, mica, and basalt fiber, and in this case, there is an effect of excellent fluidity and mechanical properties.

The glass fiber may have a chop length of 2 to 5 mm, a diameter of 5 to 20 µm, or a chop length of 3 to 5 mm, and a diameter of 7 to 15 µm, for example, and appearance characteristics within this range And excellent mechanical properties.

The glass fiber may be a chopped glass fiber surface-treated with silane or olefin as a preferred example, and in this case, the rigidity of the antenna device of the present invention is maintained by maintaining a very strong bonding force between the polymers. There is an effect of improving.

The glass fiber may be, for example, a cylindrical shape, a cocoon type, or a flat type, and in this case, there is an effect of excellent appearance characteristics and mechanical properties.

The antenna device is, for example, one or more other additives selected from the group consisting of heat stabilizers, process stabilizers, antioxidants, light stabilizers, plasticizers, UV absorbers, lubricants, impact modifiers, colorants, antioxidants, antistatic agents, flow improvers, and release agents. It may further include, and in this case, there is an effect of implementing the function of each additive without deteriorating the underlying physical properties inherent to the antenna device of the present invention.

The other additives are, for example, more than 0 parts by weight to 5 parts by weight or less, preferably 0.1 to 3 parts by weight, more preferably 0.5 to less than 0 parts by weight, based on a total of 100 parts by weight of the resin component and the laser direct molding (LDS) additive combined. It may be included in an amount of 2 parts by weight, and within this range, there is an effect of implementing the function of the additive without deteriorating the underlying physical properties of the antenna device of the present invention.

The heat stabilizer is not particularly limited if it is a heat stabilizer commonly used in the technical field to which the present invention belongs, but examples include triphenyl phosphite, tris-(2,6-dimethylphenyl)phosphite, tris-(mixed mono- And organic phosphites such as di-nonylphenyl)phosphite; Organic phosphonates such as dimethylbenzene phosphonate and the like; And organic phosphates such as trimethyl phosphate and the like; it may be at least one selected from the group consisting of.

The process stabilizer is not particularly limited if it is a process stabilizer commonly used in the technical field to which the present invention belongs.

The antioxidant is not particularly limited if it is an antioxidant commonly used in the technical field to which the present invention belongs, but examples include tris(nonylphenyl)phosphite, tris(2,4-di-ti(t)-butylphenyl)phos Organic phosphites such as phyte, bis(2,4-di-ti-butylphenyl)pentaerythritol diphosphite, distearyl pentaerythritol diphosphite, and the like; Alkylated monophenols or polyphenols; Alkylation reaction products of polyphenols having dienes such as tetrakis[methylene(3,5-di-tert-butyl-4-hydroxyhydrocinnamate)]methane and the like; Butylation reaction product of para-cresol or dicyclopentadiene; Alkylated hydroquinone; Hydroxylated thiodiphenyl ether; Alkylidene-bisphenol; Benzyl compounds; Esters of beta-(3,5-di-tert-butyl-4-hydroxyphenyl)-propionic acid with monohydric or polyhydric alcohols; Esters of beta-(5-tert-butyl-4-hydroxy-3-methylphenyl)-propionic acid with monohydric or polyhydric alcohols; Distearylthiopropionate, dilaurylthiopropionate, ditridecylthiodipropionate, octadecyl-3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate, Esters of thioalkyl or thioaryl compounds such as pentaerythrityl-tetrakis[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate and the like; And amides such as beta-(3,5-di-tert-butyl-4-hydroxyphenyl)-propionic acid, and the like.

The light stabilizer is not particularly limited if it is a light stabilizer commonly used in the technical field to which the present invention belongs, but examples include 2-(2-hydroxy-5-methylphenyl)benzotriazole, 2-(2-hydroxy- It may be one or more selected from the group consisting of 5-tert-octylphenyl)-benzotriazole and 2-hydroxy-4-n-octocy benzophenone.

The plasticizer is not particularly limited if it is a plasticizer commonly used in the technical field to which the present invention belongs, but examples include phthalic acid ester, dioctyl-4,5-epoxy-hexahydrophthalate, tris-(octoxycarbonylethyl) iso It may be one or more selected from the group consisting of cyanurate, tristearin, and epoxidized soybean oil.

The UV absorber is not particularly limited if it is a UV absorber commonly used in the technical field to which the present invention belongs.

The lubricant is not particularly limited if it is a lubricant commonly used in the technical field to which the present invention belongs, but examples include sodium lauryl sulfate (SLS), sodium lauryl ether sulfate (SLES), linear alkylbenzene sulfonate (LAS), Mono alkyl phosphate (MAP), ethylene bis stearamide, acyl isethionate (SCI), alkyl glyceryl ether sulfonate (AGES), acyl glutamate, acyl taurate ( acyl taurate), fatty acid metal salt, ethoxylated fatty alcohol, ethoxylated fatty acid, ethoxylated alkyl phenik, alkanolamide ( Fatty acid alkanolamide (alkanolamide), ethoxylated fatty acid alkanolamide, fatty amine oxide, fatty amido amine oxide, Glyceryl fatty acid ester, sorbitan, ethoxylated sorbitan ester, alkyl poly glycoside, ethylene/propylene oxide block copolymer (ethylene/ propylene oxide copolymer) and ethoxylated-propoxylated fatty alcohol, and in this case, there is an effect of improving wettability.

The lubricant may be, for example, 0.1 to 1 parts by weight, preferably 0.3 to 0.5 parts by weight, based on a total of 100 parts by weight of the resin component and the laser direct molding (LDS) additive, and improves wettability within this range. At the same time, it has excellent mechanical properties.

The impact modifier is not particularly limited if it is an impact modifier commonly used in the technical field to which the present invention belongs.

The coloring agent, the present invention is the case of conventional coloring agents used in the art that not particularly limited, one example TiO _2, ZnO, BaSO _4, MgSiO _4, be at least one selected from the group consisting of ZnS and Sb ₂ O ₃ have.

The antioxidant may include, for example, a phenolic antioxidant, a phosphorus antioxidant, or a mixture thereof, and in this case, during the extrusion process, oxidation by heat is prevented and mechanical properties are excellent.

The phenolic antioxidant may be, for example, 0.1 to 1 parts by weight, preferably 0.2 to 0.5 parts by weight, based on a total of 100 parts by weight of the resin component and the laser direct molding (LDS) additive, and within this range, the extrusion process It has the effect of improving mechanical properties by preventing oxidation due to heat.

The phosphorus antioxidant may be, for example, 0.1 to 1 part by weight, or 0.2 to 0.5 parts by weight based on a total of 100 parts by weight of the resin component and the laser direct molding (LDS) additive, and preferably, the phenolic antioxidant and It is used in combination, and in this case, there is an effect of improving mechanical properties by preventing oxidation due to heat during the extrusion process.

The antistatic agent is not particularly limited if it is an antistatic agent commonly used in the technical field to which the present invention belongs, but as an example, one selected from the group consisting of glycerol monostearate, sodium stearylsulfonate, and sodium dodecylbenzenesulfonate It can be more than that.

The flow improver is not particularly limited if it is a flow improver commonly used in the technical field to which the present invention belongs.

The releasing agent is not particularly limited if it is a releasing agent commonly used in the technical field to which the present invention belongs, but as an example, the group consisting of metal stearate, stearyl stearate, pentaerythritol tetrastearate, beeswax, montan wax, and paraffin wax It may be one or more selected from.

Manufacturing method of antenna device

The manufacturing method of the antenna device is preferably a) 0.1 to 20% by weight of a metal compound surface-modified with aminosilane and 80 to 99.9% by weight of a resin component are mixed with a laser direct molding (LDS) additive, and then extruded with an extruder to make pellets. Manufacturing a; And b) injection-molding the produced pellets to manufacture an injection product, and in this case, the mechanical properties are excellent without deterioration of plating properties such as plating adhesion, so that the reliability of the antenna is excellent, and There is an advantage that a circuit can be implemented.

In a preferred embodiment, the method of manufacturing the antenna device comprises: i) hydroxylating the surface of the metal compound; ii) preparing a laser direct molding (LDS) additive by modifying the surface of the hydroxylated metal compound with aminosilane; iii) mixing 0.1 to 20% by weight of the prepared laser direct molding (LDS) additive and 80 to 99.9% by weight of the resin component, and then extruding with an extruder; And iv) injection molding the extruded extrudate; in this case, the metal compound surface-modified with aminosilane is very uniformly distributed in the resin, thereby improving mechanical properties without deteriorating plating properties. have.

The step i) is, for example, a step of hydroxylating the surface of the metal compound by adding the metal compound to the basic aqueous solution and heating at 60 to 100°C, or 70 to 90°C for 2 to 7 hours, or 3 to 6 hours. In this case, the surface of the metal compound is activated to facilitate subsequent surface modification, and the surface-modified metal compound is very uniformly distributed in the resin, thereby improving mechanical properties.

The basic aqueous solution may be, for example, an aqueous solution containing at least one selected from the group consisting of sodium hydroxide, calcium hydroxide, and potassium hydroxide, and in this case, a hydroxyl group (OH group) is introduced on the surface of the metal compound, so that the surface modification is performed thereafter. In addition to being easy, the surface-modified metal compound is very uniformly distributed in the resin, thereby improving mechanical properties.

The step i) may include, for example, adjusting the pH to 6 to 8 or 6.5 to 7.5 after the heating step. In this case, the sol of the aminosilane reacted in step ii) by adjusting the pH to neutral- There is an effect that does not affect the gel reaction.

In this description, the pH can be measured using a general pH measuring device at room temperature (20 to 25 °C) unless otherwise stated, and specifically, it can be measured using the Thermo Scientific Orion Star A Series.

The pH adjustment may be adjusted by filtration with distilled water, for example, and in this case, there is an effect of removing hydroxide ions.

The step i) may include, for example, drying at 50 to 100° C., preferably 70 to 90° C. after the pH adjustment step, and within this range, a surface-activated metal compound is obtained so that subsequent surface modification is easy. There is a loss effect.

The step ii) may include, for example, adding an aminosilane to a mixture of ethanol and water to perform a hydrolysis reaction, and in this case, the dispersibility of the aminosilane is improved.

The mixed solution may have a weight ratio of ethanol and water of 5:5 to 9:1, preferably 6:4 to 8:2, and has an effect of improving the dispersibility of aminosilane within this range.

The hydrolysis reaction may be, for example, a reaction of stirring the mixture and the aminosilane at 40 to 80° C., or 50 to 70° C. for 10 to 60 minutes, or 15 to 45 minutes. There is an effect of improving dispersibility.

The step ii) may be a step of reacting including an acid catalyst as an example, and the acid catalyst may be one or more selected from the group consisting of oxalic acid, acetic acid and hydrochloric acid as an example, and in this case, the effect of facilitating surface modification of the metal compound There is.

The step of reacting including the acid catalyst may be, for example, a step of reacting at 50 to 100° C., or 60 to 90° C. for 7 to 14 hours, or 8 to 13 hours, and within this range, the surface modification of the metal compound is There is an effect of facilitating.

The step ii) may include, for example, drying at 50 to 100° C. or 60 to 90° C. after the hydrolysis reaction, and within this range, the dispersibility of the aminosilane is improved, so that the surface modification of the metal compound is improved. There is an effect of facilitating.

Steps a) and iii) include, for example, 20 to 40 parts by weight of reinforcing material and more than 0 parts by weight of additives to 5 parts by weight or less in addition to 0.1 to 20% by weight of the prepared laser direct molding additive and 80 to 99.9% by weight of the resin component. In this case, the metal compound surface-modified with aminosilane is very uniformly distributed in the resin without deteriorating plating properties such as plating adhesion, thereby improving mechanical properties.

Steps a) and iii) may be, for example, extruding at 200 to 320°C, preferably at 230 to 310°C, more preferably at 250 to 300°C, and within this range, the reliability of antenna plating is improved. Has the effect of being.

Steps a) and iv) may be, for example, injection molding the extruded pellets or extrudates at an injection temperature of 250 to 350°C, preferably 280 to 320°C, and the injection surface is uniform within this range. As a result, there is an effect of improving the reliability of antenna plating.

In addition, the steps a) and iv) may be, for example, a step of injection molding the extruded pellet or extrudate under an injection pressure of 30 to 100 bar, preferably 40 to 70 bar, and within this range, the injection surface This uniformity has the effect of improving the reliability of antenna plating.

In the present description, the injection temperature and injection pressure refer to the temperature and pressure in the injection cylinder unless otherwise defined.

In addition, steps a) and iv) may be, for example, injection molding the extruded pellets or extrudates under a holding pressure of 20 to 60 bar, preferably under a holding pressure of 30 to 50 bar, and injection within this range. Since the surface becomes uniform, there is an effect of improving the reliability of antenna plating.

The extruded product may have, for example, a tensile strength of 120 Mpa or more, 120 to 300 Mpa, preferably 125 to 200 Mpa, and has excellent mechanical properties within this range.

The extruded product may have, for example, a flexural strength of 140 Mpa or more, 160 to 300 Mpa, preferably 165 to 250 Mpa, and has excellent mechanical properties within this range.

The extruded product may be freely formed within the scope of not impairing the objects and effects of the present invention according to any purpose in its shape, and preferably has a pyramidal shape, more preferably a triangular pyramid or a square pyramid shape, in this case a shark antenna It is possible to make the most of the space inside the carrier, such as, and has excellent assembly, moldability, and fastening properties with other components such as a printed circuit board.

The method of manufacturing the antenna device preferably comprises the steps of: v) forming a conductive path in the molded article using a laser; And vi) plating a metal layer on the conductive path. In this case, there is an effect of excellent plating characteristics and mechanical properties.

The laser may be programmed to move along a desired pattern path, for example, and in this case, there is an effect of forming a conduction path having a constant shape and thickness of the pattern.

The laser may be, for example, one or more selected from the group consisting of fiber laser, UV laser, excimer laser, and laser electromagnetic radiation. In this case, metal atoms are activated and the surface of the activated region is roughened, thereby facilitating plating.

The plating is not particularly limited as long as it is an electroless plating process, but for example, it may be a process of plating at least one metal layer selected from the group consisting of copper, gold, nickel, silver, zinc, and tin. In this case, laser reactivity and plating characteristics This has an excellent effect.

The metal layer may have, for example, a thickness of 10 μm or more, 10 to 30 μm, and preferably 15 to 25 μm, and within this range, laser reactivity, plating properties and mechanical properties are excellent, and accurate plating adhesion measurement is easy.

In this description, the thickness of the metal layer is measured according to IEDX-150T mp30 of ISP XRF.

For example, the metal layer may have a circuit bonding strength of 5B or more, and in this case, the plating adhesion is very excellent, and laser reactivity and mechanical properties are also excellent.

In this description, the circuit bonding strength is measured according to ASTM D3359.

In the present description, the metal layer may preferably form an antenna metal pattern.

In the present description, the antenna mechanism is defined as being capable of including all of the above-mentioned injection product, its processed product, its pre-plated injection product, and the metal layer-plated injection product.

The manufacturing method of the antenna mechanism includes all of the above-described antenna mechanism as technical features.

Hereinafter, a shark antenna including an Athena mechanism according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a plan view (a) and a right side view (b) of a shark antenna according to an embodiment of the present invention. Referring to FIG. 1, a shark antenna according to an embodiment of the present invention has a shape of a shark pin having a length of 130 to 170 mm, a width of 60 to 90 mm, and a height of 50 to 80 mm. At this time, what is shown in the drawings is the appearance of the carrier pedestal on which the printed circuit board and the antenna device are placed, and the carrier cover covering the same, and the printed circuit board and the antenna device installed inside are not visible.

2 is a photograph taken from the left (a), upper (b) and rear (c) of an antenna device (injection) according to an embodiment of the present invention. 2, the antenna device according to an embodiment of the present invention is an injection molded product obtained by injection-molding a polyphenylene sulfide (PPS) resin in the form of a triangular pyramid with a blunt front, and a hole in which screws can be coupled at the lower end. That is, a screw fastening part is formed. It is confirmed that the screw fastening portion for these four places has the conformability and fastening property with the carrier pedestal, and that the extruded product has a complete assembling property without interference in fastening with the carrier cover. In this case, the molded object maximizes the area in which the antenna metal pattern can be formed on the right side (a), the top surface (b), and the rear surface (c) by maximizing the internal space of the shark antenna.

3 is a left side view (a), a right side view (b), and a top view (c) of an antenna device on which a metal pattern is formed according to an embodiment of the present invention. Referring to FIG. 3, on the left, right, and rear views of the antenna device in the form of a triangular pyramid with a blunt front, FM band antenna metal pattern (left), DMB radio band antenna metal pattern (right), LTE band antenna metal pattern ( The rear surface) is formed, and holes through which the screw can be coupled, that is, the screw fastening part, are formed on all sides of the lower end.

4 is a photograph of a printed circuit board (PCB) for mounting an antenna according to an embodiment of the present invention. Referring to FIG. 4, a DMB fastening part, an FM radio fastening part, and an LTE fastening part are formed in a part corresponding to each surface on which the antenna metal pattern of the antenna device is formed, and can be screw-coupled with the carrier support and the antenna device. A plurality of holes, that is, screw fastening portions are formed. In this case, preferably, a connection part of a PCB and a signal line may be included so that an RF signal line may be connected between the circuit and the antenna for transmission of RF signals transmitted and received to the antenna. In addition, the connection part of the PCB preferably includes an antenna contact clip component so as to secure suitable connection performance when contacting the antenna metal pattern. Here, the antenna contact clip component is not particularly limited as long as it is a means of securing an electrical contact resistance below an appropriate level so that signals can be smoothly transmitted when contacting the antenna pattern. In this case, the RF signal line may be preferably installed at the shortest distance between the antenna and the circuit, and in this case, signal loss that may occur in the RF signal line of the PCB is minimized. In addition, the RF signal line may be preferably designed as an RF transmission line having an impedance of 40 to 60 Ω, specifically 50 Ω, in which case the return loss due to the occurrence of impedance mismatch is minimized. In addition, the RF signal line may preferably further include a matching component mounting pad, and in this case, an impedance matching circuit can be applied, and thus the antenna has the advantage of miniaturization and high performance. In the present description, the mating component mounting pad is not particularly limited if it is a mating component mounting pad commonly used in the technical field to which the present invention pertains. The bottom layer of the PCB is preferably made so that the plated surface of the PCB is exposed to contact the antenna device, that is, the antenna metal pattern, that is, electrically connected. In this case, the PCB and the lower part of the antenna device are electrically Can be connected to GND.

5 is a picture taken from the right (a), left (b) and rear (c) of the inside of the shark antenna according to an embodiment of the present invention. Referring to FIG. 5, a printed circuit board (PCB) and an antenna mechanism having a metal pattern formed on the carrier pedestal are sequentially screwed, and the carrier cover is not yet coupled. At this time, the metal pattern may be optimized by combining an impedance antenna pattern and an impedance matching circuit to resonate at frequencies of DMB (195 MHz), FM (98 MHz), and LTE (Low-band: 869 MHz, High-band: 1880 MHz). In this case, there is an advantage of excellent reliability (VSWR). In addition, each of the metal patterns forms an uneven pattern (a), a vortex pattern (b), and a branched pattern (c) in which a square pattern is combined with a triangular pattern, so that the FM fastening portions of the printed circuit board (PCB) are formed. , DMB connection part and LTE connection part contact, that is, electrically connected. The starting point of the metal pattern is connected to the printed circuit board at the bottom of the antenna device, and the starting point and the ending point of the metal pattern do not meet.

6 is a photograph of a carrier pedestal and a printed circuit board (inside) for mounting an antenna coupled thereto according to an embodiment of the present invention. Referring to FIG. 6, it can be seen that complete moldability, fastening and assembling properties are secured between the carrier pedestal and the printed circuit board.

7 and 8 are graphs showing the results of measuring a voltage standing wave ratio (VSWR) after a low or high temperature reliability test of an antenna according to an embodiment of the present invention, respectively, and values thereof. First, referring to FIG. 7, a low temperature (-40° C.) test was performed for 200 h (about 17 days) for each of three types of samples (the Shark antenna of FIG. 5 made of PPS resin with antenna metal patterns of FM, DMB and LTE bands). ), as a result of showing the VSWR performance after proceeding with the following conditions, it was confirmed that all of the VSWR values satisfies 4.0 or less. As a specific result, the FM band VSWR was 3.686, the DMB band VSWR was 3.832, the LTE low-band band VSWR was 3.736, and the LTE high-band band VSWR was 2.246. At this time, as the VSWR measurement frequency, the FM Radio Frequency was 98 MHz, the DMB Frequency was 195 MHz, and the LTE Frequency was 869 MHz/1.88 GHz (Low/High). Next, referring to FIG. 8, a high temperature (105° C.) test was performed for 200 h (about 17 days) for each of three types of samples (the Shark antenna of FIG. 5 on which antenna metal patterns of FM, DMB and LTE bands were formed). As a result of showing the VSWR performance after proceeding with the condition, it was confirmed that all of the VSWR values satisfies 4.0 or less. As a specific result, the FM band VSWR was 3.658, the DMB band VSWR was 3.589, the LTE low-band band VSWR was 3.791, and the LTE high-band band VSWR was 3.551. At this time, the VSWR measurement frequency is the same as the low temperature test. For reference, this reliability test was conducted through Onetech, an accredited certification testing agency.

In the above, the embodiments according to the present invention have been described with reference to the accompanying drawings, but various changes or modifications can be made at the level of those of ordinary skill in the art to which the present invention pertains. Such changes and modifications may be said to belong to the present invention as long as they do not depart from the scope of the technical idea provided by the present invention.

In addition, preferred embodiments are presented below to aid in the understanding of the present invention, but the following examples are only illustrative of the present invention, and various changes and modifications are possible within the scope of the present invention and the scope of the technical idea, which is obvious to those skilled in the art. It is natural that such modifications and modifications fall within the appended claims.

Materials used in the following Examples and Comparative Examples are as follows. Unless otherwise defined herein,% means% by weight.

* Copper compound: copper chrome oxide with an average particle diameter of 1.5 µm (Black 1G from The Shepherd Color)

* Ethanol: Daejung Chemical Co, Korea 94.5%

* Oxalic acid: Daejung Chemical Co, Korea 98.5%

* APTES: (3-Aminopropyl)triethoxysilane (98% Alfa Aesar)

* MPTES: (3-Mercaptopropyl)trimethoxysilane (95% Alfa Aesar)

* TMPS: Trimethoxyphenylsilane (97% Sigma Aldrich)

* PPS: Polyphenylene sulfide resin with a melt index (316 ℃, 5.0 kg) of 100 g/min (QA200P from Solvay)

* Reinforcement: Glass fiber with nominal diameter 10.0 ㎛ and chop length 4.0 mm (910-10P by Owenscorning)

* Phosphorus antioxidant: Tris(2,4-di-tert-butylphenyl)phosphite (SONGNOX 1680 of Songwon Industries)

* Phenolic antioxidant: Octadecyl-3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate (SONGNOX 1076 of Songwon Industries)

* Lubricant: Ethylene Bis Stearamide (Sunkoo's SUNLUBE EBS)

[Example]

Example 1

Hydroxylating the surface of the metal compound

Into a 1-liter 4-neck round bottom flask equipped with a thermometer, reflux cooler, and a heating stirrer, 300 g of sodium hydroxide (NaOH) 5M aqueous solution and 10 g of a copper compound were added, and the temperature was raised to 80° C. and stirred for 4 hours to heat. .

After the reaction was completed, the copper compound was cooled to room temperature, filtered several times with a large amount of distilled water to make pH 7 (neutral), and dried in an oven at 80° C. to obtain a copper compound whose surface was hydroxylated.

Modifying the surface of the hydroxylated metal compound with an aminosilane

After adding 3% by weight of APTES, an aminosilane, to 300 mL of a 7:3 mixture of ethanol and water, the hydrolysis reaction was carried out while stirring at 50° C. for 30 minutes.

Thereafter, 10 g of a copper compound having a hydroxylated surface was added to the mixture. At this time, 1 g of oxalic acid was added as an acid catalyst, followed by stirring at 80° C. for 8 hours to proceed with the reaction.

After the reaction, it was filtered with a large amount of distilled water and dried in an oven at 80° C. to obtain a copper compound surface-modified with aminosilane.

Steps of manufacturing an antenna device

A phenolic antioxidant 0.3 Part by weight, 0.3 parts by weight of phosphorus antioxidant, and 0.4 parts by weight of lubricant are added to the mixer and sufficiently mixed, and then double-screw extruder through the main feeder (K-Tron single screw, K2-ML-D5-S60, Screw Dia=40mm). 35 parts by weight of the reinforcement material was introduced through a side feeder (K-Tron twin screw, K-MV-KT20, Screw Dia=10mm) through a twin-screw extruder (Co-rotating intermesh extruder, Screw Dia=42 mm, L/D ratio). =40, SM Platek). At this time, the temperature of the extruder was set to 270 ℃, 285 ℃, 290 ℃ according to the Feeding Zone, Mixing Zone, and Die Zone, and the total discharge amount was 50 kg/hr, and the screw speed was 200 rpm.

The melted and extruded composition was immediately cooled in water in a water bath, and then made into pellets using a pelletizer. Then, it was dried using a dehumidifying dryer at 110 °C.

Dried pellets are put into the injection molding machine by setting the temperature of the injection molding machine to 50 ℃ for the dropping point, 270 ℃ for the transfer section, 300 ℃ for the mixing section, and 310 ℃ for the nozzle. The specimen was prepared as a 3.2 mm thick specimen, and the bent specimen was manufactured as ASTM D790 127 mm long, 12.7 mm wide, and 3.2 mm thick, and the specimen for measuring the metal circuit bonding strength was 100 mm long, 100 mm wide, and 2 thick. It was produced as a square plate specimen of mm.

Example 2

It was carried out in the same manner as in Example 1, except that 91% by weight of polyphenylene sulfide resin (PPS) and 9% by weight of a copper compound surface-modified with aminosilane were used.

Comparative Example 1

It was carried out in the same manner as in Example 1, except that the surface-modified copper compound was used.

Comparative Example 2

Addition of 7% by weight of the unmodified copper compound and 1% by weight of APTES instead of 7% by weight of the copper compound surface-modified with silane, eliminating the step of modifying the surface of the hydroxylated metal compound of Example 1 with aminosilane, and It was carried out in the same manner as in Example 1, except that 92% by weight of polyphenylene sulfide resin (PPS) was used instead of 93% by weight.

Comparative Example 3

It was carried out in the same manner as in Example 1, except that MPTES was used instead of APTES.

Comparative Example 4

It was carried out in the same manner as in Example 1, except that TMPS was used instead of APTES.

[Test Example]

The properties of the injection molded products prepared in Examples 1 to 2 and Comparative Examples 1 to 4 were measured by the following method, and the results are shown in Table 1 below.

* Tensile strength (Mpa): was measured at a rate of 5 mm/min according to ASTM D638.

* Flexural strength (Mpa): was measured at a rate of 5 mm/min according to ASTM D790.

* Circuit adhesive strength (B): measured according to ASTM D3359.

division	Example 1	Example 2	Comparative Example 1	Comparative Example 2	Comparative Example 3	Comparative Example 4
PPS (parts by weight)	93	91	93	92	93	93
Metal compound without surface modification (parts by weight)	0	0	7	7	0	0
Metal compound surface-modified with APTES (parts by weight)	7	9	0	0	0	0
Metal compound surface-modified with MPTES (parts by weight)	0	0	0	0	7	0
Metal compound surface-modified with TMPS (parts by weight)	0	0	0	0	0	7
APTES (parts by weight)	0	0	0	One	0	0
Reinforcing material (part by weight)	35	35	35	35	35	35
Phosphorus antioxidant (parts by weight)	0.3	0.3	0.3	0.3	0.3	0.3
Phenolic antioxidant (parts by weight)	0.3	0.3	0.3	0.3	0.3	0.3
Lubricant (parts by weight)	0.4	0.4	0.4	0.4	0.4	0.4
Tensile strength (Mpa)	134.1	129.7	118.6	118.3	102.6	114.3
Flexural strength (Mpa)	173.2	168.5	163.1	161.8	138.6	154.7
Circuit adhesion strength (B)	5B	5B	4B	4B	4B	4B

As shown in Table 1, the injection-molded products (Examples 1 to 2) manufactured with the antenna device of the present invention have excellent mechanical properties such as tensile strength and flexural strength, and excellent plating properties through excellent circuit bonding strength. On the other hand, it was confirmed that the tensile strength, flexural strength, and circuit bonding strength were decreased when the composition was made of a composition containing a metal compound that was not surface-modified (Comparative Examples 1 and 2).

In addition, in the case of Comparative Example 2 in which APTES was separately added without modifying the surface with aminosilane, it was confirmed that all of the tensile strength, flexural strength, and circuit bonding strength were decreased compared to the Example.

In addition, when prepared with a composition containing a metal compound surface-modified with silanes other than aminosilane (Comparative Examples 3 and 4), it was confirmed that the tensile strength, flexural strength and circuit bonding strength were significantly reduced compared to the examples.

As shown in FIG. 9 below, it was confirmed that 1% by weight of aminosilane was attached to the surface of the metal compound through the TGA graph (weight loss 1%).

In addition, as shown in FIG. 10 below, it was possible to confirm the process of introducing a hydroxyl group (OH group) to the surface of the metal compound through the basic aqueous solution. It was confirmed that the surface of the metal compound into which the hydroxyl group was introduced was hydroxylated.

In addition, as shown in FIG. 11 below, it was possible to confirm the process of introducing an aminosilane group to the surface of the metal compound activated with a hydroxyl group. As shown in FIGS. 14 and 15, hydroxylated through TEM photographs. It was confirmed that the surface of the metal compound was modified with aminosilane.

Claims (15)

1. It is formed including 80 to 99.9% by weight of a resin component and 0.1 to 20% by weight of a laser direct molding (LDS) additive,

   The laser direct molding (LDS) additive is characterized in that it is a metal compound surface-modified with aminosilane

   Antenna mechanism.
2. The method of claim 1,

   The antenna mechanism is characterized in that at least one antenna metal pattern selected from the group consisting of a radio band antenna metal pattern, a DMB band antenna metal pattern, an LTE band antenna metal pattern, and a GPS band antenna metal pattern independently plated in an LDS method is formed. With

   Antenna mechanism.
3. The method of claim 2,

   The metal is copper, nickel or gold, characterized in that

   Antenna mechanism.
4. The method of claim 2,

   The antenna metal pattern is characterized in that the voltage standing wave ratio (VSWR) is 4 or less.

   Antenna mechanism.
5. The method of claim 1,

   The resin component is characterized in that at least one selected from the group consisting of polyarylene sulfide resin, polyamide resin, polyester resin, polycarbonate resin, polyarylene ether resin, and liquid crystal polymer (LCP).

   Antenna mechanism.
6. The method of claim 1,

   The aminosilane is the following formula (1)

   [Formula 1]

   

   (The R ₁ to R ₅ are independently hydrogen or an alkyl group having 1 to 5 carbon atoms, and R′ is an alkylene group having 2 to 10 carbon atoms.)

   Antenna mechanism.
7. The method of claim 1,

   The laser direct molding (LDS) additive comprises 95 to 99.9% by weight of a metal compound and 0.1 to 5% by weight of an aminosilane bonded to the surface of the metal compound.

   Antenna mechanism.
8. The method of claim 1,

   The metal compound is characterized in that the average particle diameter is 0.05 to 20 ㎛

   Antenna mechanism.
9. The method of claim 1,

   The metal compound is characterized in that the surface is a hydroxylated metal compound

   Antenna mechanism.
10. The method of claim 1,

    The metal is characterized in that at least one selected from the group consisting of magnesium, copper, cobalt, zinc, tin, iron, manganese and nickel, titanium, aluminum and chromium

    Antenna mechanism.
11. The method of claim 1,

    The antenna mechanism is characterized in that it is formed by including 20 to 40 parts by weight of a reinforcing material based on a total of 100 parts by weight of the resin component and the laser direct molding (LDS) additive

    Antenna mechanism.
12. The method of claim 11,

    The reinforcing material is characterized in that at least one selected from the group consisting of glass fiber, talc, wollastonite, whisker, silica, mica and basalt fibers.

    Antenna mechanism.
13. a) preparing a pellet by mixing 0.1 to 20% by weight of a metal compound surface-modified with aminosilane and 80 to 99.9% by weight of a resin component as a laser direct molding (LDS) additive, and then extruding with an extruder; And

    b) manufacturing an injection product by injection-molding the prepared pellets; characterized in that it comprises

    Method of manufacturing an antenna device.
14. The method of claim 13,

    The method of manufacturing the antenna device comprises the steps of: v) forming a conductive path in the molded object using a laser; And vi) plating a metal layer on the conductive path.

    Method of manufacturing an antenna device.
15. It comprises the antenna device of claim 1 and a printed circuit board (PCB) electrically connected thereto.

    Shark antenna.

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