CN103360927A - Plastic formation body formed with coating preventing creaky sound - Google Patents
Plastic formation body formed with coating preventing creaky sound Download PDFInfo
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- CN103360927A CN103360927A CN201310106788XA CN201310106788A CN103360927A CN 103360927 A CN103360927 A CN 103360927A CN 201310106788X A CN201310106788X A CN 201310106788XA CN 201310106788 A CN201310106788 A CN 201310106788A CN 103360927 A CN103360927 A CN 103360927A
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Abstract
The present invention relates to a plastic formation body formed with a coating preventing creaky sound. The plastic formation body formed with the coating is used in assembling structures such as auto parts assembling the plastic formation bodies formed with the coatings and plastic formation bodies formed with metal coatings. The coating of the plastic formation body is formed by coating compositions of an acrylic resin containing hydroxyl groups, a polyisocyanates compound, a tinting pigment and/or a luminous pigment, silicon dioxide series delustering agents and polysiloxane additives. The tuken hardness of the coating is over 15, while a static friction coefficient of the coating is below 0.7. In this manner, coating processes during manufacture are not increased, and the creaky sound generated from contact between the coating and the metal coating when the plastic formation body is used in the abovementioned assembling structures is avoided.
Description
Technical field
The present invention relates to assemble use in the assembled structural body of the plastics forming body that is formed with the plastics forming body of filming and is formed with metal plating, be formed with and prevent the creakily plastics forming body of filming of rattler sound.
Background technology
The ABS(acrylonitrile-butadiene-styrene (ABS)) the plastics forming body such as, except shaping processability, shock-resistance, chemical proofing are also excellent, therefore are applied to automobile inside part, OA machine, daily necessities, toy, light current machine etc. widely in the field.In the automobile inside part, be used in the in-built parts such as a decoration (De ア ト リ system), dashboard, but the part that piece surface is in contact with one another in these parts because automobile vibration in motion, mostly occurs this part phase mutual friction and produces creakily the unfavorable condition such as rattler sound.Therefore, the surface smoothness excellence of these parts is necessary.
In patent documentation 1, disclose and related in order to give ABS resin products formed surface smoothness, ABS resin is added organopolysiloxane and the invention of the method that is shaped in advance.
And, in patent documentation 2-4, proposed to have cooperated by the automobile inside parts such as opposite house decoration coatings the surface treatment agent of rattler sound creakily of preventing of carbamate resins (ウ レ タ Application Trees fat) particle, spherical ceramic particle, give the piece surface slipperiness, to reduce and even to prevent the scheme of the rattler sound that creaks that the contact part by in-built part produces.
On the other hand, in the exterior part of automobile, also use the plastics forming body, consider from the viewpoint of in recent years design, in the exterior part of the automobiles such as front grid, just progressively use and assembled the exterior part of automobile that is formed with painted molding of filming and is formed with the molding of metal plating.In the exterior part of these automobiles, the same with above-mentioned in-built part in the part of filming and contacting with metal plating, when carwash, can cause this part phase mutual friction during with hand etc. and produce the creakily unfavorable condition of rattler sound.For this unfavorable condition, use the invention of record in the patent documentation 1, can produce the problem of the variation such as the adhesivity of filming when carrying out painted coating.In addition, when the invention of putting down in writing among the patent documentation 2-4 is applied to as described above assembled structural bodies such as the exterior part of automobile, creakily the preventing effectiveness of rattler sound may not be abundant in existence, is coated with the problems such as painting process increase of cloth treating agent at the molding of having implemented painted coating.
Patent documentation 1: Japanese kokai publication sho 60-223860 communique
Patent documentation 2: Japanese kokai publication hei 8-27409 communique
Patent documentation 3: Japanese kokai publication hei 8-281210 communique
Patent documentation 4: TOHKEMY 2006-28444 communique.
Summary of the invention
The present invention is the invention that In view of the foregoing forms, the purpose of this invention is to provide and be formed with the plastics forming body of filming, its be assembled use in the assembled structural bodies such as auto parts of the plastics forming body that is formed with the plastics forming body of filming and is formed with metal plating, be formed with the plastics forming body of filming, can not increase its painting process in making, the creakily rattler sound of the generation when contact with metal plating of filming when preventing for above-mentioned assembled structural body.
Contrivers etc. conduct in-depth research for addressing the above problem repeatedly, found that, this time, make this that be formed with the plastics forming body of filming film by the acrylic resin, (B) polyisocyanate compound, (C) tinting pigment and/or the luminous pigment that comprise (A) and contain hydroxyl, (D) silica-based matting agent and (E) coating composition of polysiloxane series additive form, making this figure health hardness of filming is more than 15, and static friction coefficient is below 0.7, can realize above-mentioned purpose thus, so far finish the present invention.
Therefore, the invention provides and be formed with the plastics forming body of filming, it is to have assembled in the assembled structural body that is formed with the plastics forming body of filming and the plastics forming body that is formed with metal plating to use, be formed with the plastics forming body of filming, it is characterized in that, above-mentioned filming is acrylic resin by comprising (A) and contain hydroxyl, (B) polyisocyanate compound, (C) tinting pigment and/or luminous pigment, (D) silica-based matting agent, what (E) coating composition of polysiloxane series additive formed films, and above-mentioned figure health hardness of filming is more than 15, and static friction coefficient is below 0.7.
According to the present invention, assembled and used in the assembled structural body that is formed with the plastics forming body of filming and the plastics forming body that is formed with metal plating, this that is formed with the plastics forming body of filming filmed by the acrylic resin that comprises (A) and contain hydroxyl, (B) polyisocyanate compound, (C) tinting pigment and/or luminous pigment, (D) silica-based matting agent, (E) coating composition of polysiloxane series additive forms, and this figure health hardness of filming is more than 15, and static friction coefficient is below 0.7, thus, can not increase painting process, the rattler sound that creaks that effectively prevents from assembled structural body, filming and produce when contacting with metal plating.
Below, for the plastics forming body of filming that is formed with of the present invention, describe in further detail.
Embodiment
The plastics forming body of filming that is formed with of the present invention is to have assembled the plastics forming body of filming that is formed with that uses in the assembled structural body that is formed with the plastics forming body of filming and the plastics forming body that is formed with metal plating, above-mentioned film by the acrylic resin, (B) polyisocyanate compound, (C) tinting pigment and/or the luminous pigment that comprise (A) and contain hydroxyl, (D) silica-based matting agent and (E) coating composition of polysiloxane series additive form, the figure health hardness that its formation is filmed is more than 15, and static friction coefficient is below 0.7.
The plastics forming body
In the present invention, there is no particular limitation to be formed with the material of the plastics forming body of filming, and particularly, for example, can enumerate acrylic resin, polycarbonate resin, ABS resin, polyvinyl chloride (PVC) RESINS, urethane resin (Port リ ウ レ タ Application Trees fat) etc.And, in order to improve above-mentioned tack of filming, also can form prime coat at the plastics forming body.
Coating composition
Be used for forming the coating composition of filming at above-mentioned plastics forming body and be the acrylic resin, (B) polyisocyanate compound, (C) tinting pigment and/or the luminous pigment that contain (A) and contain hydroxyl, (D) silica-based matting agent and (E) composition of polysiloxane series additive.
The acrylic resin (A) that contains hydroxyl
The acrylic resin (A) that contains hydroxyl, unsaturated monomer that can be by for example containing hydroxyl, acrylic monomer and further as required other unsaturated monomer generation copolymerization make.
The unsaturated monomer that contains hydroxyl is the compound that has respectively at least 1, preferred 1 hydroxyl and polymerizability unsaturated double-bond in 1 molecule.For example, can be enumerated as the carbonatomss such as (methyl) vinylformic acid hydroxyethyl ester, (methyl) vinylformic acid hydroxy-propyl ester, (methyl) vinylformic acid hydroxybutyl ester is 2-10, particularly the acrylic acid mole affixture that waits of the aklylene glycol of 2-5 and (methyl).
In acrylic monomer, comprise that (methyl) vinylformic acid and carbonatoms are 1-24, the monoesters compound of the monohydroxy-alcohol of 1-10 particularly, particularly, for example, can enumerate (methyl) methyl acrylate, (methyl) ethyl propenoate, (methyl) propyl acrylate, (methyl) butyl acrylate, (methyl) Ethyl acrylate, (methyl) 2-ethylhexyl acrylate, (methyl) vinylformic acid Lauryl Ester, (methyl) stearyl acrylate base ester etc.
In other unsaturated monomer, comprise except the above-mentioned unsaturated monomer that contains hydroxyl and acrylic monomer, have at least 1 in 1 molecule, the compound of preferred 1 polymerizability unsaturated double-bond, particularly, for example, can be enumerated as the unsaturated compound that vinylformic acid, methacrylic acid, β-crotonic acid, methylene-succinic acid, toxilic acid, fumaric acid, (methyl) vinylformic acid 2-carboxy ethyl ester, (methyl) vinylformic acid 2-carboxyl propyl diester, (methyl) vinylformic acid 5-carboxy pentyl ester etc. contain carboxyl; (methyl) glycidyl acrylate, glycidyl allyl ether etc. contain the unsaturated compound of glycidyl; (methyl) perfluoroalkyl acrylate such as (methyl) vinylformic acid perfluoro butyl ethyl ester, the different nonyl ethyl ester of (methyl) vinylformic acid perfluor, (methyl) vinylformic acid perfluoro capryl ethyl ester; The vinyl aromatic compounds such as vinylbenzene, alpha-methyl styrene, Vinyl toluene, α-chloro-styrene; (methyl) vinylformic acid N, N-dimethyl aminoethyl ester, (methyl) vinylformic acid N, the nitrogenous alkyl esters of (methyl) vinylformic acid such as N-diethylamino ethyl ester, (methyl) vinylformic acid N-tertiary butyl amino-ethyl ester; Acrylamide, Methacrylamide, N-methyl (methyl) acrylamide, N-ethyl (methyl) acrylamide, N-methylol (methyl) acrylamide, N-methoxymethyl (methyl) acrylamide, N-butoxymethyl (methyl) acrylamide, N, N-dimethyl (methyl) acrylamide, N, N-dimethylaminopropyl (methyl) acrylamide, N, the polymerizable amide classes such as N-dimethyl aminoethyl (methyl) acrylamide; The aromatics nitrogen containing monomers such as 2-vinyl pyridine, l-vinyl-2-pyrrolidone, 4-vinylpridine; The polymerizability such as vinyl cyanide, methacrylonitrile nitrile etc., they can be separately separately or be used in combination more than 2 kinds.
The acrylic resin (A) that contains hydroxyl can utilize the original known method such as solution polymerization, by make the above-mentioned unsaturated monomer that contains hydroxyl, acrylic monomer and further as required other unsaturated monomer generation copolymerization make.
The acrylic resin (A) that contains hydroxyl is filmed hardening and is prevented that more effectively creakily the viewpoint of rattler sound considers to have preferred 20-120 ℃ from making, and more preferably 30-110 ℃, the second-order transition temperature (Tg) in 40-110 ℃ the scope particularly preferably.The adjustment of second-order transition temperature that contains the acrylic resin of hydroxyl can easily be carried out by changing monomer component and ratio thereof etc.
In this manual, second-order transition temperature (Tg) is the value of measuring with differential scanning calorimeter " DSC-220U " (セ イ コ ー イ Application ス Star Le メ Application ト society system).Particularly, collect sample with measuring cup, vacuum take-off is measured thermal change with 10 ℃/minute heat-up rates with after the fully desolventizing in-20 ℃ to+200 ℃ scope, and the change point of the baseline that low temperature side is initial is as second-order transition temperature.
And, there is no particular limitation to contain the acrylic resin (A) of hydroxyl, films hardening and prevent that more effectively creakily the viewpoint of rattler sound considers to have preferred 10-180mgKOH/g from making, more preferably 40-140mgKOH/g, the particularly preferably hydroxyl value in the scope of 60-120mgKOH/g.
And then there is no particular limitation to contain the acrylic resin (A) of hydroxyl, considers to have preferred 3000-100000 from the viewpoints such as solidified nature of filming, more preferably 5000-50000, the particularly preferably weight-average molecular weight in the scope of 6000-30000.
In this manual, weight-average molecular weight is with gel permeation chromatography (Dong ソ ー (strain) society system, " HLC8120GPC ") value that obtains as basis conversion take the weight-average molecular weight of polystyrene of the weight-average molecular weight measured.With 4 " TSKgel G-4000H * L ", " TSKgel G-3000H * L ", " TSKgel G-2500H * L ", " TSKgel G-2000H * L " (being Dong ソ ー (strain) society system, trade(brand)name) as pillar, and with Dong ソ ー (strain) society polystyrene standard processed as polystyrene standard, in moving phase: tetrahydrofuran (THF), measure temperature: carry out under the condition of 40 ℃, flow velocity: 1ml/ minute, detector: RI.
Polyisocyanate compound (B)
Polyisocyanate compound (B) is to have at least 2 in 1 molecule, the compound of preferred 2-4 isocyanate group, particularly, for example, can be enumerated as biuret type affixture, the isocyanurate ring affixture of the aliphatic polyisocyante classes such as hexamethylene diisocyanate, trimethyl hexamethylene diisocyanate, dimer acid diisocyanate, lysinediisocyanate (リ ジ Application ジ イ ソ シ ア ネ ー ト) and these polyisocyanates; Isophorone diisocyanate, 4,4 '-methylene-bis (cyclohexyl isocyanate), methylcyclohexane-2,4-vulcabond, methylcyclohexane-2,6-vulcabond, 1,3-two (isocyanato-methyl (イ ソ シ ア Na ト メ チ Le)) hexanaphthene, 1,4-two (isocyanato-methyl) hexanaphthene, 1,4-cyclohexyl diisocyanate, 1,3-pentamethylene vulcabond, 1, biuret type affixture, the isocyanurate ring affixture of the alicyclic diisocyanate class such as 2-cyclohexyl diisocyanate and these polyisocyanates; Xylylene diisocyanate, the mphenylenedimethylim-vulcabond, tetramethyl xylylene diisocyanate, tolylene diisocyanate, 4,4 '-diphenylmethanediisocyanate, 1, the 5-naphthalene diisocyanate, 1, the 4-naphthalene diisocyanate, 4,4 '-Tolylamine vulcabond, 4,4 '-diphenyl ether vulcabond, m-benzene diisocyanate, PPDI, 4,4 '-biphenylene vulcabond, 3,3 '-dimethyl-4,4 '-biphenylene vulcabond, two (4-isocyanato-phenyl (イ ソ シ ア Na ト Off ェ ニ Le)) sulfone, the biuret type affixture of the two aromatic diisocyanate compounds such as (4-phenyl isocyanate) of isopropylidene and these polyisocyanates, the isocyanurate ring affixture; Triphenyl methane-4,4 '; 4 "-triisocyanate, 1,3,5-three isocyanato-benzene (ト リ イ ソ シ ア Na ト ベ Application ゼ Application), 2,4,6-three isocyanato-toluene (ト リ イ ソ シ ア Na ト ト Le エ Application), 4,4 '-dimethyl diphenylmethane-2,2 ', 5, have the polyisocyanates of the isocyanate group more than 3 and biuret type affixture, the isocyanurate ring affixture of these polyisocyanates in 1 molecule such as 5 '-tetraisocyanate; Under isocyanate group is excessive ratio, make the biuret type affixture, isocyanurate ring affixture of urethane affixture (ウ レ タ Application is paid and added thing) that the reaction of the hydroxyl of the polyvalent alcohols such as ethylene glycol, propylene glycol, BDO, dimethylol propionic acid, polyalkylene glycol, TriMethylolPropane(TMP), hexanetriol and polyisocyanate compound forms and these polyisocyanates etc.
The content of polyisocyanate compound in the coating composition (B) does not have strict restriction, from making crosslinked, the raising figure health hardness of filming fully, more effectively preventing that creakily the viewpoint of rattler sound is considered, with respect to the acrylic resin that contains hydroxyl (A) 100 mass parts, preferred 5-60 mass parts, more preferably 10-50 mass parts is particularly preferably in the scope of 20-50 mass parts.
Tinting pigment and/or luminous pigment (C)
As tinting pigment and/or luminous pigment (C), can use tinting pigment and/or the luminous pigment of normally used in paint field, organic system and inorganic system.As tinting pigment, for example, can be enumerated as the white pigments such as titanium oxide, zinc oxide, white lead, alkaline lead sulfate, lead sulfate, lithopone, zinc sulphide, stibium trioxide; The black pigments such as carbon black, acetylene black, dim, boneblack, graphite, iron oxide black, nigrosine; The yellow ultramarines such as chrome yellow, loess, baryta yellow, Zh 1, naphthol yellow S, organic yellow 10G; The orange pigmentss such as chrome orange, chrome vermilion, the Sudan I, permanent orange; The brown pigments such as ferric oxide, amber; The red pigments such as red iron oxide, red lead, permanent red 4R, quinoline Azone system; The blue pigmentss such as ultramarine, Prussian blue, cobalt blue, phenol cyanines indigo plant; The veridian such as chrome green, phenol cyanines are green; Etc. inorganic, organic tinting pigment.In addition, as luminous pigment, for example, can enumerate mica that aluminum oxide, oxidized titanium or ferric oxide that aluminium, AM aluminum metallization, copper, zinc, brass, nickel, aluminum oxide, mica, oxidized titanium or ferric oxide coated coated etc.They can be separately separately or be used in combination more than 2 kinds.
The content of tinting pigment and/or luminous pigment (C) does not have strict restriction in the coating composition, consider from viewpoints such as designability and hardness of film, amount to 100 mass parts with respect to the resin that contains hydroxyl (A) and polyisocyanate compound (B), for preferred 1-80 mass parts, more preferably the 3-60 mass parts, particularly preferably in the scope of 3-40 mass parts.
Silica-based matting agent (D)
As silica-based matting agent (D), can be enumerated as micropowder silicon-dioxide, colloid silica etc., particularly, for example, can be enumerated as and be trade(brand)name more than サ イ リ シ ア 310, サ イ リ シ ア 350, サ イ リ シ ア 430, the サ イ リ シ ア 435(, the シ リ シ ア of Fuji chemistry society system), ミ ズ カ シ Le P-526, ミ ズ カ シ Le P-527(are above is trade(brand)name, marshy land chemical industry society system) etc.Silica-based matting agent (D) preferably has the median size in the 0.1-30 μ m, the particularly scope of 0.5-10 μ m usually.
There is no particular limitation for the content of silica-based matting agent (D) in the coating composition, from keeping designability, can make again simultaneously the static friction coefficient reduction and prevent that more effectively creakily the viewpoint of rattler sound is considered, amount to 100 mass parts with respect to the resin that contains hydroxyl (A) and above-mentioned polyisocyanate compound (B), preferred 3-35 mass parts, more preferably 5-30 mass parts is particularly preferably in the scope of 5-25 mass parts.
Polysiloxane series additive (E)
Coating composition of the present invention further contains polysiloxane series additive (E).By containing the polysiloxane series additive, static friction coefficient is reduced, can more effectively prevent creakily rattler sound.As polysiloxane series additive (E), for example, can be enumerated as the organopolysiloxanes such as dimethyl polysiloxane; With the organopolysiloxane modification modified polyorganosiloxane etc.As modified polyorganosiloxane, particularly, for example, can be enumerated as alkyl-modified polysiloxane, phenyl modified polysiloxane, Siloxane-Oxyalkylene Copolymers etc.They can be separately separately or be used in combination more than 2 kinds.
As the commercially available product of polysiloxane series additive (E), for example, can enumerate that DC3074, DC3037, SR2402(are above to be trade(brand)name, be eastern レ ダ ウ コ ー ニ Application グ society system); KR9218, X-40-9220(are above to be trade(brand)name, is chemical industry society of SHIN-ETSU HANTOTAI system); TSR165, XR-31B1763(are above to be trade(brand)name, is シ リ コ ー Application society of Toshiba and makes); " BYK341 ", " BYK344 ", " BYK306 ", " BYK325 ", " BYK320 ", " BYK300 ", " BYK302 ", " BYK330 ", " BYK333 ", " BYK335 " and " BYK370 " (above is trade(brand)name, PVC ッ Network ケ ミ ー ジ ャ パ Application society system) etc.
There is no particular limitation for the content of the polysiloxane series additive (E) in the coating composition, from being reduced, static friction coefficient prevents that more effectively creakily the viewpoint of rattler sound is considered, solid composition 100 mass parts with respect to coating composition, preferred 0.01-5 mass parts, more preferably 0.05-4.5 mass parts is particularly preferably in the scope of 0.1-4 mass parts.
Be used for forming the coating composition of filming at above-mentioned plastics forming body, can above-mentioned by making (A) contain acrylic resin, (B) polyisocyanate compound, (C) tinting pigment and/or luminous pigment, (D) silica-based matting agent of hydroxyl and (E) the polysiloxane series additive in solvent, mix, disperse to make.As this solvent, for example, can enumerate the hydrocarbon system solvents such as toluene, dimethylbenzene, octane, mineral turpentine; The ester series solvents such as ethyl acetate, butylacetate, ethylene glycol monomethyl ether acetate, Diethylene Glycol single-butyl ether acetic ester; The ketone series solvents such as methyl ethyl ketone, methyl iso-butyl ketone (MIBK), cyclohexyl ketone; The ether series solvents such as n-butyl ether, diox etc.This coating composition can have 30-60 quality % usually, the solid constituent concentration in the preferred 40-55 quality % scope.
Film
Above-mentioned filming can form by aforementioned coating composition being coated on the above-mentioned plastics forming body.There is no particular limitation for its coating process, for example, can use aerial spraying, hydraulic spraying, dip coated, hairbrush etc. to carry out.
Can be after the coating of this coating composition, at about 60-approximately under 90 ℃ the temperature, heated approximately 20-approximately 50 minutes and dry, form thus and film.Be limited to the heat resisting temperature of raw material on the storing temperature.
There is no particular limitation for the thickness of filming, and usually can be 5-50 μ m, in the scope of preferred 10-40 μ m.
In the present invention, filming has figure health hardness more than 15, from preventing more effectively that creakily the viewpoint of rattler sound considers preferably have more than 17, particularly the figure health hardness more than 19." figure health hardness " is in this manual, for coating composition being coated on tinplate dermatotome (SPTE; Thickness 0.3mm) upper so that dry film thickness be about 20 μ m and 80 ℃ of post curings in lower dry 30 minutes three days film, under 20 ℃, with American Chain ﹠amp; The TUKON microhardness tester of Cable Company system are pressed into cubic goldbeating hard rock pressure head and film with (certain test load), the hardness of filming that reads according to the size of the rhombus recess that at this moment produces.Figure health hardness refers to that its numerical value is more large more for hard.In addition, with coated article be made as the tinplate dermatotome be because, if when coated article was made as coated article soft as ABS, coated article can be out of shape when mensuration figure health hardness, then can not correctly measure the figure health hardness of filming.
The adjustment of the figure health hardness of filming can be undertaken by above-mentioned each composition and the content of suitable selection aforementioned coating composition.For example, contain the second-order transition temperature of acrylic resin (A) of hydroxyl and the contamination of hydroxyl value and polyisocyanate compound (B) by suitable selection, can access formation figure health hardness and be the coating composition of filming more than 15.More specifically, for example, use second-order transition temperature to be 20-120 ℃ and the hydroxyl value acrylic resin that contains hydroxyl (A) as 10-180mgKOH/g, be the coating composition of the polyisocyanate compound (B) of 5-60 mass parts by containing with respect to the acrylic resin that contains hydroxyl (A) 100 mass parts, can access formation figure health hardness and be the coating composition of filming more than 15.
Among the present invention, filming has static friction coefficient below 0.7, from preventing more effectively that creakily the viewpoint of rattler sound is considered, preferably have particularly below 0.6, and then the static friction coefficient below 0.5 particularly.Static friction coefficient is by measuring the value that obtains as standard take JIS K 7125 plastics-film and sheet material-test method of friction coefficient basically in this specification sheets.Particularly, be to measure the value that obtains according to following measuring method.Use the HEIDON(trade(brand)name of Xin Dong KCC system) as measuring machine, at first, for coating composition being coated on ABS resin plate (canopy pool eight smooth society systems, thickness 5mm) upper so that dry film thickness be 20 μ m, 80 ℃ of lower dry post curings in 30 minutes 3 days film, make the steel ball of its contact φ 10mm, place the weights of 500g thereon as load, anchor portion so that test board mobile after, measure sliding.
Static friction coefficient is filming below 0.7, can obtain by above-mentioned each composition and the content of suitable selection aforementioned coating composition.For example, by the content of suitable selection tinting pigment and/or luminous pigment (C), silica-based matting agent (D) and/or polysiloxane series additive (E), can access and form static friction coefficient is the coating composition of filming below 0.7.More specifically, for example, content by making silica-based matting agent (D) is 3-35 mass parts etc. with respect to total 100 mass parts of the resin that contains hydroxyl (A) and polyisocyanate compound (B), and can access and form static friction coefficient is the coating composition of filming below 0.7.
The plastics forming body of filming that is formed with of the present invention for example, can be used in the exterior parts of automobile such as front grid, when being assembled on the plastics forming body that is formed with metal plating, can effectively prevent the rattler sound that creaks that assembled structural body produces.
Embodiment
Below, further specifically describe the present invention by embodiment, but the present invention is not limited to these embodiment.In addition, " part " and " % " expression " mass parts " and " quality % ".
The making of coating
Production Example 1
Cooperate according to conventional methods with the solid composition quality and count 80 parts the acrylic resin that contains hydroxyl (A-1) (annotate 1), count 0.4 part of 20 parts polyisocyanate compound (B-1) (annotating 4), 2 parts of carbon blacks, 4 parts of aluminium flakes (ア Le ミ フ レ ー Network), 15 parts of silicon-dioxide (annotating 6) and polysiloxane series additive (annotating 7) with the solid composition quality, with the dimethylbenzene dilution so that the solid composition is 50% to obtain coating (1).
Production Example 2-7
In embodiment 1, except according to the mix proportion shown in the table 1, similarly operate with Production Example 1, obtain each coating (2)-(7).
In addition, the cooperation of table 1 represents with the solid composition, and (the annotating 1) in the table 1-(annotating 7) is as described below.
(annotating 1) contains the acrylic resin (A-1) of hydroxyl: hydroxyl value 100mgKOH/g, weight-average molecular weight 8000, the acrylic resin that second-order transition temperature (Tg) is 70 ℃
(annotating 2) contains the acrylic resin (A-2) of hydroxyl: hydroxyl value 100mgKOH/g, weight-average molecular weight 8000, the acrylic resin that second-order transition temperature (Tg) is 30 ℃
(annotating 3) contains the acrylic resin (A-3) of hydroxyl: hydroxyl value 100mgKOH/g, weight-average molecular weight 8000, the acrylic resin that second-order transition temperature (Tg) is 110 ℃
(annotating 4) polyisocyanate compound (B-1): " ス ミ ジ ュ ー Le N-3500 ", Sumitomo バ イ エ Le ウ レ タ Application society system, trade(brand)name, the isocyanuric acid ester of hexamethylene diisocyanate
(annotating 5) polyisocyanate compound (B-2): " デ ュ ラ ネ-ト E-402-90T ", society of Asahi Chemical Industry system, trade(brand)name, polycaprolactone polyol modified polyisocyanate
(annotating 6) silicon-dioxide: " サ イ リ シ ア 435 ", trade(brand)name, the シ リ シ ア of Fuji chemistry society system
(annotating 7) polysiloxane series additive: " BYK344 ", PVC ッ Network ケ ミ ー ジ ャ パ Application society system, trade(brand)name, polyether-modified dimethyl polysiloxane.
[table 1]
Embodiment 1-5 and comparative example 1,2
Each coating (1)-(7) of modulating in the Production Example are sprayed on the surface of front grid of automobile, so that dry film thickness is 20 μ m, make it dry and obtain each test coating thing of embodiment and comparative example.
Performance test
To supply in following performance test according to each test coating thing of above-mentioned making.The results are shown in following table 2.
(* 1) figure health hardness: for each coating being coated on tinplate dermatotome (SPTE; Thickness 0.3mm) upper so that dry film thickness be about 20 μ m, 80 ℃ of post curings in lower dry 30 minutes 3 days film, under 20 ℃, with American Chain ﹠amp; The TUKON microhardness tester of Cable Company system are pressed into cubic goldbeating hard rock pressure head and film with (certain test load), read according to the size of the rhombus recess that at this moment produces.
(* 2) static friction coefficient: for each coating being coated on ABS resin plate (canopy pool eight smooth society systems, thickness 5mm) upper so that dry film thickness be 20 μ m, 80 ℃ of post curings in lower dry 30 minutes 3 days film, make the steel ball of its contact φ 10mm, place the weights of 500g thereon as load, anchor portion so that test board mobile after, with the HEIDON(trade(brand)name of eastern KCC system) mensuration.
(* 3) are the rattler sound creakily: will electroplate manufactured part and be placed on each test coating thing with the status level of assembling, with cloth so that the degree of test coating thing bending firmly from the flanging wiping of limit, the left and right sides, make test coating thing crooked, thus, coated face and electroplated component friction, investigate whether produce sound, estimate according to following standard.
Zero: do not produce sound
*: produce sound.
[table 2]
Claims (12)
1. be formed with the plastics forming body of filming, it is to have assembled in the assembled structural body that is formed with the plastics forming body of filming and the plastics forming body that is formed with metal plating to use, be formed with the plastics forming body of filming, it is characterized in that, above-mentioned filming is acrylic resin by comprising (A) and contain hydroxyl, (B) polyisocyanate compound, (C) tinting pigment and/or luminous pigment, (D) silica-based matting agent, what (E) coating composition of polysiloxane series additive formed films, and above-mentioned figure health hardness of filming is more than 15, and static friction coefficient is below 0.7.
2. plastics forming body according to claim 1, wherein, the acrylic resin (A) that contains hydroxyl has the second-order transition temperature in 20～120 ℃ the scope.
3. plastics forming body according to claim 2, wherein, the acrylic resin (A) that contains hydroxyl has the second-order transition temperature in 30～110 ℃ the scope.
4. plastics forming body according to claim 1, wherein, the acrylic resin (A) that contains hydroxyl has the hydroxyl value in the scope of 10～180mgKOH/g.
5. plastics forming body according to claim 4, wherein, the acrylic resin (A) that contains hydroxyl has the hydroxyl value in the scope of 40～140mgKOH/g.
6. plastics forming body according to claim 1, wherein, the acrylic resin (A) that contains hydroxyl has the weight-average molecular weight in 3000～100000 the scope.
7. plastics forming body according to claim 1 wherein, with respect to the acrylic resin that contains hydroxyl (A) 100 mass parts, contains the polyisocyanate compound (B) of 5～60 mass parts.
8. the plastics forming body of filming that is formed with according to claim 1 wherein, with respect to total 100 mass parts of the resin that contains hydroxyl (A) and polyisocyanate compound (B), contains tinting pigment and/or the luminous pigment (C) of 1～80 mass parts.
9. the plastics forming body of filming that is formed with according to claim 1 wherein, with respect to total 100 mass parts of the resin that contains hydroxyl (A) and polyisocyanate compound (B), contains the silica-based matting agent (D) of 3～35 mass parts.
10. the plastics forming body of filming that is formed with according to claim 1 wherein, with respect to solid composition 100 mass parts of coating composition, contains the polysiloxane series additive (E) of 0.01～5 mass parts.
11. each described plastics forming body of filming that is formed with according to claim 1～10, wherein, the figure health hardness of filming is more than 17.
12. each described plastics forming body of filming that is formed with according to claim 1～10, wherein, the static friction coefficient of filming is below 0.6.
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| JP2012080058 | 2012-03-30 | ||
| JP2012-080058 | 2012-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310106788XA Pending CN103360927A (en) | 2012-03-30 | 2013-03-29 | Plastic formation body formed with coating preventing creaky sound |
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| CN (1) | CN103360927A (en) |
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| CN106519938A (en) * | 2015-09-09 | 2017-03-22 | 关西涂料株式会社 | Coating composite |
| CN111587182A (en) * | 2018-01-16 | 2020-08-25 | 株式会社太洋工作所 | Coated with silica |
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| JP6106735B1 (en) * | 2015-10-27 | 2017-04-05 | 大日本塗料株式会社 | Paint composition |
| JP6121015B1 (en) * | 2016-02-19 | 2017-04-26 | 大日本塗料株式会社 | Coating composition, coated body and method for producing the same |
| JP6182686B1 (en) * | 2017-03-02 | 2017-08-16 | 大日本塗料株式会社 | Coating composition, coated body and method for producing the same |
| JP6912849B2 (en) * | 2017-04-04 | 2021-08-04 | 関西ペイント株式会社 | Coating composition and method for forming a multi-layer coating film |
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| JP2013226814A (en) | 2013-11-07 |
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