CN111489720A - Guitar production process - Google Patents
Guitar production process Download PDFInfo
- Publication number
- CN111489720A CN111489720A CN202010381222.8A CN202010381222A CN111489720A CN 111489720 A CN111489720 A CN 111489720A CN 202010381222 A CN202010381222 A CN 202010381222A CN 111489720 A CN111489720 A CN 111489720A
- Authority
- CN
- China
- Prior art keywords
- guitar
- reaction kettle
- paint
- handle
- cutting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 47
- 239000003973 paint Substances 0.000 claims abstract description 66
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 52
- 239000011787 zinc oxide Substances 0.000 claims abstract description 26
- 239000002023 wood Substances 0.000 claims abstract description 25
- 238000000034 method Methods 0.000 claims abstract description 20
- 238000006243 chemical reaction Methods 0.000 claims description 61
- 239000000463 material Substances 0.000 claims description 47
- 238000005520 cutting process Methods 0.000 claims description 43
- 238000005507 spraying Methods 0.000 claims description 32
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 20
- 239000003292 glue Substances 0.000 claims description 20
- DCXXMTOCNZCJGO-UHFFFAOYSA-N tristearoylglycerol Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCC(OC(=O)CCCCCCCCCCCCCCCCC)COC(=O)CCCCCCCCCCCCCCCCC DCXXMTOCNZCJGO-UHFFFAOYSA-N 0.000 claims description 20
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 claims description 17
- 229920000058 polyacrylate Polymers 0.000 claims description 16
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 claims description 15
- 238000005498 polishing Methods 0.000 claims description 15
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 claims description 15
- 239000002994 raw material Substances 0.000 claims description 15
- NKSJNEHGWDZZQF-UHFFFAOYSA-N ethenyl(trimethoxy)silane Chemical compound CO[Si](OC)(OC)C=C NKSJNEHGWDZZQF-UHFFFAOYSA-N 0.000 claims description 14
- 238000001035 drying Methods 0.000 claims description 13
- 239000003054 catalyst Substances 0.000 claims description 11
- 238000007590 electrostatic spraying Methods 0.000 claims description 11
- 239000003999 initiator Substances 0.000 claims description 11
- 239000000843 powder Substances 0.000 claims description 11
- 229920006337 unsaturated polyester resin Polymers 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 229940080421 coco glucoside Drugs 0.000 claims description 10
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 claims description 10
- 238000005553 drilling Methods 0.000 claims description 10
- 238000002156 mixing Methods 0.000 claims description 10
- 238000002360 preparation method Methods 0.000 claims description 10
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 claims description 10
- PGPAJJPJQNBBDR-UHFFFAOYSA-N 2-methyl-4-trimethoxysilylhex-1-en-3-one Chemical compound CC(=C)C(=O)C(CC)[Si](OC)(OC)OC PGPAJJPJQNBBDR-UHFFFAOYSA-N 0.000 claims description 9
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 6
- RNLHGQLZWXBQNY-UHFFFAOYSA-N 3-(aminomethyl)-3,5,5-trimethylcyclohexan-1-amine Chemical compound CC1(C)CC(N)CC(C)(CN)C1 RNLHGQLZWXBQNY-UHFFFAOYSA-N 0.000 claims description 5
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 5
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 5
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical group CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 claims description 5
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 5
- 238000005452 bending Methods 0.000 claims description 5
- 239000006229 carbon black Substances 0.000 claims description 5
- 238000004140 cleaning Methods 0.000 claims description 5
- 239000008367 deionised water Substances 0.000 claims description 5
- 229910021641 deionized water Inorganic materials 0.000 claims description 5
- 239000012975 dibutyltin dilaurate Substances 0.000 claims description 5
- 238000000227 grinding Methods 0.000 claims description 5
- 238000004321 preservation Methods 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 5
- 230000002787 reinforcement Effects 0.000 claims description 5
- 238000009966 trimming Methods 0.000 claims description 5
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims description 4
- 238000001132 ultrasonic dispersion Methods 0.000 claims description 2
- 230000032683 aging Effects 0.000 abstract description 8
- 230000001070 adhesive effect Effects 0.000 abstract description 7
- 238000013016 damping Methods 0.000 abstract description 5
- 239000002932 luster Substances 0.000 abstract description 4
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 238000012360 testing method Methods 0.000 description 6
- 230000009471 action Effects 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 239000003607 modifier Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- HMUNWXXNJPVALC-UHFFFAOYSA-N 1-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]piperazin-1-yl]-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethanone Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)N1CCN(CC1)C(CN1CC2=C(CC1)NN=N2)=O HMUNWXXNJPVALC-UHFFFAOYSA-N 0.000 description 1
- VZSRBBMJRBPUNF-UHFFFAOYSA-N 2-(2,3-dihydro-1H-inden-2-ylamino)-N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]pyrimidine-5-carboxamide Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C(=O)NCCC(N1CC2=C(CC1)NN=N2)=O VZSRBBMJRBPUNF-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007542 hardness measurement Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10D—STRINGED MUSICAL INSTRUMENTS; WIND MUSICAL INSTRUMENTS; ACCORDIONS OR CONCERTINAS; PERCUSSION MUSICAL INSTRUMENTS; AEOLIAN HARPS; SINGING-FLAME MUSICAL INSTRUMENTS; MUSICAL INSTRUMENTS NOT OTHERWISE PROVIDED FOR
- G10D3/00—Details of, or accessories for, stringed musical instruments, e.g. slide-bars
- G10D3/22—Material for manufacturing stringed musical instruments; Treatment of the material
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
- C09D167/06—Unsaturated polyesters having carbon-to-carbon unsaturation
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Wood Science & Technology (AREA)
- Materials Engineering (AREA)
- Acoustics & Sound (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Inorganic Chemistry (AREA)
- Stringed Musical Instruments (AREA)
- Paints Or Removers (AREA)
Abstract
The invention relates to the technical field of guitar production, in particular to a guitar production process; the special paint prepared by the invention has good adhesive property, can be tightly adhered to the surface of a guitar, and the formed paint film has strong adhesive property and is not easy to fall off. The formed paint film has better luster and higher abundance, and the paint surface is brighter and smoother; moreover, the specially-made paint is sprayed on the surface of the guitar, so that the internal damping of the guitar is obviously reduced, the vibration efficiency of wood used by the guitar is obviously improved, and the guitar produced by the method has better acoustic quality; secondly, the hardness and the wear resistance of a paint film generated by the sprayed special paint are excellent; and when the nano zinc oxide is used, the tensile strength and the aging resistance of a paint film can be obviously improved, and the service life of the paint film is prolonged.
Description
Technical Field
The invention relates to the technical field of guitar production, in particular to a guitar production process.
Background
As one of string instruments in the family of instruments, the guitar is a stringed musical instrument that produces sound by plucking one of the strings above. When playing, one hand is used to stir the strings, and the fingers of the other hand are pressed on the fingerboard which is a small metal strip covered on the neck. The sound played out will be enhanced by the guitar's resonator.
Guitars are used in a variety of musical styles and are often considered the dominant musical instrument in popular music, rock music, blues, folk songs, and framenoge. Guitars have also been used with classical music, with a large number of solo songs, occasionally used in indoor music and orchestral music. It typically has six chords, but also four chords, eight chords, ten chords and twelve chords.
The surface of the guitar needs to be sprayed with finish paint in the production process, but the finish paint which is commercially available at present not only affects the acoustic quality of the guitar when being sprayed on the surface of the guitar. Moreover, the wear resistance, hardness, tensile strength and aging resistance of the paint film are relatively poor. This also has a negative effect on the quality of the produced guitar.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a guitar production process, which has the advantages that: the specially-made paint prepared by the invention is sprayed on the surface of the guitar, so that the vibration efficiency of wood used by the guitar is remarkably improved, and the guitar has better acoustic quality. Moreover, the prepared special paint has strong adhesion performance, and relatively good wear resistance, hardness, tensile strength and aging resistance; effectively improving the quality of the produced guitar.
In order to achieve the purpose, the invention adopts the following technical scheme:
a production process of a guitar comprises the following steps:
s1, sorting and selecting the guitar raw materials, reasonably selecting the guitar handle materials, finger plate materials, face plates, back plates and side plates, and drying the guitar raw materials to obtain qualified plates for manufacturing guitars;
s2, obliquely sawing the handle material in a direction of 7 degrees, reversely sticking the handle material together to form a 14-degree oblique position, sequentially performing the working procedures of manufacturing a headstock, installing a handle lump, polishing the handle lump, drilling string buttonholes and the like, and finally manufacturing a handle;
s3, cutting a finger plate material with a specified specification, sawing a wire groove by using a professional machine, and drilling and embedding the sound points on the finger plate by using related mechanical equipment, wherein the accuracy of the standard of the scale is high;
s4, cutting the guitar shape on the selected wood surface for manufacturing the back plate, drawing the guitar shape on the wood by using a template before cutting, cutting by 3-5mm more along the outer ring during cutting, polishing the cutting, and drawing a sound hole on the sound plate;
s5, cutting the guitar shape on the surface of the selected wood for manufacturing the back plate, adhering the sound beam to the back plate by glue, digging radians on two sides of the sound beam by a shovel blade, cleaning the redundant glue on the contact surface of the sound beam and the back plate, pressing the sound beam after adhering, and drying the glue under natural conditions;
s6, measuring the required length before cutting the side plate, wherein the lengths of the fillet and the unfilled corner are different, and selecting different dies; after cutting, a certain bending degree needs to be processed, and then the cut bent part is placed into a die for fixed-line reinforcement; finally, connecting the two side plates by using a connector wood to form a complete guitar shape;
s6, bonding and assembling the panel, the back plate and the side plates by using glue, then carrying out embedding and edge covering treatment on the edge of the guitar body, assembling the guitar sound barrel and the guitar handle after edge covering is finished, and then installing an adjusting rod, a guitar fingerboard and trimming the handle;
s7, transferring the guitar into a spraying room, carrying out full-automatic spraying treatment on the surface of the guitar, and then carrying out fine grinding treatment on the fingerboard; then, the finished product of the guitar is obtained through the working procedures of nailing a product line, polishing primer, sawing a pillow position, attaching a lower code, installing a string button, installing strings, tuning and the like; wherein, when spraying the finish paint, a special paint is adopted.
By adopting the technical scheme: the guitar produced by the invention has stronger adhesion property of the paint film on the surface and is not easy to fall off. And the paint has better luster and higher abundance, and the paint surface is brighter and smoother. In addition, it allows a significant reduction of the internal damping of the guitar (about 25-30%) and a significant increase of the vibration efficiency of the wood used by the guitar itself, also allowing a better acoustic quality of the guitar produced by the invention.
The invention is further configured to: and in the step S1, the plate materials used by the handle material, the finger plate material, the face plate, the back plate and the side plate are dried until the water content is 6-8%.
By adopting the technical scheme: the water content in the board is controlled to be 6-8%, so that the processing quality of the processed handle material, finger board material, panel, back board and side board can be guaranteed, and the quality of the subsequently produced guitar can be guaranteed.
The invention is further configured to: and in the S7, a full-automatic electrostatic spraying process is adopted during full-automatic spraying, and the voltage during electrostatic spraying is 35-45 kV.
By adopting the technical scheme: the phenomenon of electron current generation can be effectively reduced by setting the voltage of electrostatic spraying, and the appearance of a coating film formed on the surface of the guitar is ensured to be good.
The invention is further configured to: when spraying is carried out in S7, the resistivity of the powder is 930-1000 omega/cm, and the spraying amount is 300-700 g/min.
By adopting the technical scheme: by limiting the resistivity of the powder, it is easier to disperse when electrostatically sprayed, and too high a resistance value of the powder can affect the thickness of the guitar surface finish. Moreover, the size of the powder spraying amount is limited, so that the deposition rate can be reduced, and the influence of the powder spraying amount on the thickness of the finish paint film is reduced.
The invention is further configured to: the specially-made paint in the S7 is prepared from the following raw materials in parts by weight: 25-30 parts of unsaturated polyester resin, 8-12 parts of modified polyacrylate, 25-30 parts of styrene, 0.12-0.16 part of coco glucoside, 0.08-0.13 part of glyceryl tristearate, 3-5 parts of isophorone diamine, 0.3-0.6 part of initiator, 1.5-2.1 parts of amorphous white carbon black, 1.2-1.5 parts of catalyst and 0.7-1.2 parts of silane coupling agent KH-560;
the preparation method comprises the following steps: placing unsaturated polyester resin in a reaction kettle, mixing and stirring styrene, coco glucoside and tristearin for 10-20min at the speed of 120-180r/min, then respectively transferring the rest materials into the reaction kettle, carrying out ultrasonic dispersion for 10-20min, then reacting for 3-5h at the temperature of 50-60 ℃, and obtaining a mixed component in the reaction kettle, namely the special paint after the reaction is finished.
By adopting the technical scheme: the special paint prepared by the invention has good adhesive property, can be tightly adhered to the surface of a guitar, and the formed paint film has strong adhesive property and is not easy to fall off. And the formed paint film has better luster and higher abundance, and the paint surface is brighter and smoother. In addition, the spray application of the custom paint to the surface of the guitar results in a significant reduction of the internal damping of the guitar (by about 25-30%), a significant increase in the vibration efficiency of the wood used in the guitar itself, and also a better acoustic quality of the guitar produced by the present invention.
The invention is further configured to: the preparation method of the modified polyacrylate comprises the following steps: adding nano zinc oxide and 0.4-0.9% of methacryloyl propyl trimethoxy silane into a reaction kettle, injecting deionized water with the mass of 3-5 times of that of the nano zinc oxide into the reaction kettle, carrying out ultrasonic mixing treatment for 5-8min, adjusting the pH value of the reaction kettle to 8.6-9.7 by using ammonia water, then adding methyl methacrylate with the mass of 8-10 times of that of the zinc oxide into the reaction kettle, then respectively adding sodium dodecyl benzene sulfonate, butyl acrylate, potassium persulfate and vinyl trimethoxy silane into the reaction kettle, raising the temperature of the reaction kettle to 35-45 ℃, and carrying out heat preservation reaction for 5-8h at the temperature; after the reaction is finished, the obtained product is marked as modified polyacrylate; wherein the mass ratio of the methyl methacrylate to the butyl acrylate to the sodium dodecyl benzene sulfonate to the potassium persulfate to the vinyl trimethoxy silane is 1:1:0.12-0.18:0.20-0.25: 0.35-0.43.
By adopting the technical scheme: according to the invention, nano zinc oxide and butyl acrylate are used as modifiers, methacryloyl propyl trimethoxy silane and vinyl trimethoxy silane are used as media, and under the action of potassium persulfate, methacryloyl propyl trimethoxy silane and vinyl trimethoxy silane molecules are used as connecting bridges, so that nano zinc oxide and butyl acrylate are smoothly grafted to the surface of methyl methacrylate molecules and form chemical bonds with related groups in the methyl methacrylate molecules, wherein the chemical bonds have larger bond energy. Not only effectively improves the three-dimensional topological structure of the methyl methacrylate, but also greatly improves the hardness and the wear resistance of the prepared special paint. Moreover, under the action of the nano zinc oxide, the tensile strength and the aging resistance of a paint film can be obviously improved, and the service life of the paint film is prolonged.
The invention is further configured to: the initiator is any one of ammonium persulfate and potassium persulfate.
By adopting the technical scheme: the initiator can induce the unsaturated polyester resin and the modified polyacrylate to perform chemical reaction, so that the production efficiency of the special paint is effectively improved.
The invention is further configured to: the catalyst is dibutyl tin dilaurate.
By adopting the technical scheme: the use of the catalyst can reduce Gibbs free energy required when the nano zinc oxide and butyl acrylate are smoothly grafted to the surface of methyl methacrylate molecules, and increase the reaction rate, thereby improving the production efficiency of the special paint.
By adopting the technical scheme, the invention has the beneficial effects that:
1. the special paint prepared by the invention has good adhesive property, can be tightly adhered to the surface of a guitar, and the formed paint film has strong adhesive property and is not easy to fall off. And the formed paint film has better luster and higher abundance, and the paint surface is brighter and smoother. In addition, the special paint is sprayed on the surface of the guitar, so that the internal damping of the guitar is obviously reduced (about 25-30 percent), the vibration efficiency of wood used by the guitar is obviously improved, and the guitar produced by the method has better acoustic quality;
2. according to the invention, nano zinc oxide and butyl acrylate are used as modifiers, methacryloyl propyl trimethoxy silane and vinyl trimethoxy silane are used as media, and under the action of potassium persulfate, methacryloyl propyl trimethoxy silane and vinyl trimethoxy silane molecules are used as connecting bridges, so that nano zinc oxide and butyl acrylate are smoothly grafted to the surface of methyl methacrylate molecules and form chemical bonds with related groups in the methyl methacrylate molecules, wherein the chemical bonds have larger bond energy. Not only effectively improves the three-dimensional topological structure of the methyl methacrylate, but also greatly improves the hardness and the wear resistance of the prepared special paint. Moreover, under the action of the nano zinc oxide, the tensile strength and the aging resistance of a paint film can be obviously improved, and the service life of the paint film is prolonged.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without any inventive step, are within the scope of the present invention.
Example 1:
a production process of a guitar comprises the following steps:
s1, sorting and selecting the guitar raw materials, reasonably selecting the guitar handle materials, finger plate materials, face plates, back plates and side plates, and drying the guitar raw materials to obtain qualified plates for manufacturing guitars;
s2, obliquely sawing the handle material in a direction of 7 degrees, reversely sticking the handle material together to form a 14-degree oblique position, sequentially performing the working procedures of manufacturing a headstock, installing a handle lump, polishing the handle lump, drilling string buttonholes and the like, and finally manufacturing a handle;
s3, cutting a finger plate material with a specified specification, sawing a wire groove by using a professional machine, and drilling and embedding the sound points on the finger plate by using related mechanical equipment, wherein the accuracy of the standard of the scale is high;
s4, cutting the guitar shape on the selected wood surface for manufacturing the back plate, drawing the guitar shape on the wood by using a template before cutting, cutting by 3mm along the outer ring during cutting, polishing the guitar shape, and drawing a sound hole on the soundboard;
s5, cutting the guitar shape on the surface of the selected wood for manufacturing the back plate, adhering the sound beam to the back plate by glue, digging radians on two sides of the sound beam by a shovel blade, cleaning the redundant glue on the contact surface of the sound beam and the back plate, pressing the sound beam after adhering, and drying the glue under natural conditions;
s6, measuring the required length before cutting the side plate, wherein the lengths of the fillet and the unfilled corner are different, and selecting different dies; after cutting, a certain bending degree needs to be processed, and then the cut bent part is placed into a die for fixed-line reinforcement; finally, connecting the two side plates by using a connector wood to form a complete guitar shape;
s6, bonding and assembling the panel, the back plate and the side plates by using glue, then carrying out embedding and edge covering treatment on the edge of the guitar body, assembling the guitar sound barrel and the guitar handle after edge covering is finished, and then installing an adjusting rod, a guitar fingerboard and trimming the handle;
s7, transferring the guitar into a spraying room, carrying out full-automatic spraying treatment on the surface of the guitar, and then carrying out fine grinding treatment on the fingerboard; then, the finished product of the guitar is obtained through the working procedures of nailing a product line, polishing primer, sawing a pillow position, attaching a lower code, installing a string button, installing strings, tuning and the like; wherein, when spraying the finish paint, a special paint is adopted.
And S1, drying the plate materials used by the handle material, the finger plate material, the face plate, the back plate and the side plates until the water content is 6%.
In the S7, a full-automatic electrostatic spraying process is adopted during full-automatic spraying, and the voltage during electrostatic spraying is 35 kV.
When spraying is carried out in S7, the resistivity of the powder is 930 omega/cm, and the spraying amount is 300 g/min.
The special paint in S7 is prepared from the following raw materials in parts by weight: 25 parts of unsaturated polyester resin, 8 parts of modified polyacrylate, 25 parts of styrene, 0.12 part of coco glucoside, 0.08 part of glyceryl tristearate, 3 parts of isophorone diamine, 0.3 part of initiator, 1.5 parts of amorphous white carbon black, 1.2 parts of catalyst and 0.7 part of silane coupling agent KH-560;
the preparation method comprises the following steps: placing unsaturated polyester resin in a reaction kettle, mixing and stirring styrene, coco glucoside and tristearin at the speed of 120r/min for 10min, then respectively transferring the rest materials into the reaction kettle, ultrasonically dispersing for 10min, then reacting for 3h at the temperature of 50 ℃, and obtaining a mixed component in the reaction kettle, namely the special paint vehicle after the reaction is finished.
The preparation method of the modified polyacrylate comprises the following steps: adding nano zinc oxide and methacryloyl propyl trimethoxy silane with the amount of 0.4 percent of the nano zinc oxide into a reaction kettle together, injecting deionized water with the mass of 3 times that of the nano zinc oxide into the reaction kettle, carrying out ultrasonic mixing treatment for 5min, adjusting the pH value of the reaction kettle to 8.6 by using ammonia water, then adding methyl methacrylate with the mass of 8 times that of the zinc oxide into the reaction kettle, then respectively adding sodium dodecyl benzene sulfonate, butyl acrylate, potassium persulfate and vinyl trimethoxy silane into the reaction kettle, then raising the temperature of the reaction kettle to 35 ℃, and carrying out heat preservation reaction for 5 hours at the temperature; after the reaction is finished, the obtained product is marked as modified polyacrylate; wherein the mass ratio of the methyl methacrylate to the butyl acrylate to the sodium dodecyl benzene sulfonate to the potassium persulfate to the vinyl trimethoxy silane is 1:1:0.12:0.20: 0.35.
The initiator is ammonium persulfate.
The catalyst is dibutyl tin dilaurate.
Example 2:
a production process of a guitar comprises the following steps:
s1, sorting and selecting the guitar raw materials, reasonably selecting the guitar handle materials, finger plate materials, face plates, back plates and side plates, and drying the guitar raw materials to obtain qualified plates for manufacturing guitars;
s2, obliquely sawing the handle material in a direction of 7 degrees, reversely sticking the handle material together to form a 14-degree oblique position, sequentially performing the working procedures of manufacturing a headstock, installing a handle lump, polishing the handle lump, drilling string buttonholes and the like, and finally manufacturing a handle;
s3, cutting a finger plate material with a specified specification, sawing a wire groove by using a professional machine, and drilling and embedding the sound points on the finger plate by using related mechanical equipment, wherein the accuracy of the standard of the scale is high;
s4, cutting the guitar shape on the selected wood surface for manufacturing the back plate, drawing the guitar shape on the wood by using a template before cutting, cutting by adding 4mm along the outer ring during cutting, polishing the guitar shape, and drawing a sound hole on the soundboard;
s5, cutting the guitar shape on the surface of the selected wood for manufacturing the back plate, adhering the sound beam to the back plate by glue, digging radians on two sides of the sound beam by a shovel blade, cleaning the redundant glue on the contact surface of the sound beam and the back plate, pressing the sound beam after adhering, and drying the glue under natural conditions;
s6, measuring the required length before cutting the side plate, wherein the lengths of the fillet and the unfilled corner are different, and selecting different dies; after cutting, a certain bending degree needs to be processed, and then the cut bent part is placed into a die for fixed-line reinforcement; finally, connecting the two side plates by using a connector wood to form a complete guitar shape;
s6, bonding and assembling the panel, the back plate and the side plates by using glue, then carrying out embedding and edge covering treatment on the edge of the guitar body, assembling the guitar sound barrel and the guitar handle after edge covering is finished, and then installing an adjusting rod, a guitar fingerboard and trimming the handle;
s7, transferring the guitar into a spraying room, carrying out full-automatic spraying treatment on the surface of the guitar, and then carrying out fine grinding treatment on the fingerboard; then, the finished product of the guitar is obtained through the working procedures of nailing a product line, polishing primer, sawing a pillow position, attaching a lower code, installing a string button, installing strings, tuning and the like; wherein, when spraying the finish paint, a special paint is adopted.
And S1, drying the plate materials used by the handle material, the finger plate material, the face plate, the back plate and the side plates until the water content is 7%.
In the S7, a full-automatic electrostatic spraying process is adopted during full-automatic spraying, and the voltage during electrostatic spraying is 40 kV.
When spraying is carried out in S7, the resistivity of the powder is 950 Ω/cm, and the powder spraying amount is 500 g/min.
The special paint in S7 is prepared from the following raw materials in parts by weight: 28 parts of unsaturated polyester resin, 10 parts of modified polyacrylate, 28 parts of styrene, 0.14 part of coco glucoside, 0.10 part of glyceryl tristearate, 3-5 parts of isophorone diamine, 0.5 part of initiator, 1.8 parts of amorphous white carbon black, 1.4 parts of catalyst and 1.0 part of silane coupling agent KH-560;
the preparation method comprises the following steps: placing unsaturated polyester resin in a reaction kettle, mixing and stirring styrene, coco glucoside and glyceryl tristearate at the speed of 150r/min for 15min, then respectively transferring the rest materials into the reaction kettle, ultrasonically dispersing for 15min, then reacting for 4h at the temperature of 55 ℃, and obtaining the mixed component in the reaction kettle, namely the special paint vehicle after the reaction is finished.
The preparation method of the modified polyacrylate comprises the following steps: adding nano zinc oxide and methacryloyl propyl trimethoxy silane with the amount of 0.7 percent of the nano zinc oxide into a reaction kettle together, injecting deionized water with the mass of 4 times that of the nano zinc oxide into the reaction kettle, carrying out ultrasonic mixing treatment for 6min, adjusting the pH value of the reaction kettle to 9.2 by using ammonia water, then adding methyl methacrylate with the mass of 9 times that of the zinc oxide into the reaction kettle, then respectively adding sodium dodecyl benzene sulfonate, butyl acrylate, potassium persulfate and vinyl trimethoxy silane into the reaction kettle, then raising the temperature of the reaction kettle to 40 ℃, and carrying out heat preservation reaction for 7 hours at the temperature; after the reaction is finished, the obtained product is marked as modified polyacrylate; wherein the mass ratio of the methyl methacrylate to the butyl acrylate to the sodium dodecyl benzene sulfonate to the potassium persulfate to the vinyl trimethoxy silane is 1:1:0.15:0.23: 0.40.
The initiator is potassium persulfate.
The catalyst is dibutyl tin dilaurate.
Example 3:
a production process of a guitar comprises the following steps:
s1, sorting and selecting the guitar raw materials, reasonably selecting the guitar handle materials, finger plate materials, face plates, back plates and side plates, and drying the guitar raw materials to obtain qualified plates for manufacturing guitars;
s2, obliquely sawing the handle material in a direction of 7 degrees, reversely sticking the handle material together to form a 14-degree oblique position, sequentially performing the working procedures of manufacturing a headstock, installing a handle lump, polishing the handle lump, drilling string buttonholes and the like, and finally manufacturing a handle;
s3, cutting a finger plate material with a specified specification, sawing a wire groove by using a professional machine, and drilling and embedding the sound points on the finger plate by using related mechanical equipment, wherein the accuracy of the standard of the scale is high;
s4, cutting the guitar shape on the selected wood surface for manufacturing the back plate, drawing the guitar shape on the wood by using a template before cutting, cutting by 5mm more along the outer ring during cutting, polishing the cutting, and drawing a sound hole on the sound plate;
s5, cutting the guitar shape on the surface of the selected wood for manufacturing the back plate, adhering the sound beam to the back plate by glue, digging radians on two sides of the sound beam by a shovel blade, cleaning the redundant glue on the contact surface of the sound beam and the back plate, pressing the sound beam after adhering, and drying the glue under natural conditions;
s6, measuring the required length before cutting the side plate, wherein the lengths of the fillet and the unfilled corner are different, and selecting different dies; after cutting, a certain bending degree needs to be processed, and then the cut bent part is placed into a die for fixed-line reinforcement; finally, connecting the two side plates by using a connector wood to form a complete guitar shape;
s6, bonding and assembling the panel, the back plate and the side plates by using glue, then carrying out embedding and edge covering treatment on the edge of the guitar body, assembling the guitar sound barrel and the guitar handle after edge covering is finished, and then installing an adjusting rod, a guitar fingerboard and trimming the handle;
s7, transferring the guitar into a spraying room, carrying out full-automatic spraying treatment on the surface of the guitar, and then carrying out fine grinding treatment on the fingerboard; then, the finished product of the guitar is obtained through the working procedures of nailing a product line, polishing primer, sawing a pillow position, attaching a lower code, installing a string button, installing strings, tuning and the like; wherein, when spraying the finish paint, a special paint is adopted.
And S1, drying the plate materials used by the handle material, the finger plate material, the face plate, the back plate and the side plates until the water content is 8%.
In the S7, a full-automatic electrostatic spraying process is adopted during full-automatic spraying, and the voltage during electrostatic spraying is 45 kV.
When spraying is carried out in S7, the resistivity of the powder is 1000 Ω/cm, and the powder spraying amount is 700 g/min.
The special paint in S7 is prepared from the following raw materials in parts by weight: 30 parts of unsaturated polyester resin, 12 parts of modified polyacrylate, 30 parts of styrene, 0.16 part of coco glucoside, 0.13 part of glyceryl tristearate, 5 parts of isophorone diamine, 0.6 part of initiator, 2.1 parts of amorphous white carbon black, 1.5 parts of catalyst and 1.2 parts of silane coupling agent KH-560;
the preparation method comprises the following steps: placing unsaturated polyester resin in a reaction kettle, mixing and stirring styrene, coco glucoside and tristearin for 20min at the speed of 180r/min, then respectively transferring the rest materials into the reaction kettle, ultrasonically dispersing for 20min, then reacting for 5h at the temperature of 60 ℃, and obtaining a mixed component in the reaction kettle, namely the special paint vehicle after the reaction is finished.
The preparation method of the modified polyacrylate comprises the following steps: adding nano zinc oxide and methacryloyl propyl trimethoxy silane with the amount of 0.9 percent of the nano zinc oxide into a reaction kettle, injecting deionized water with the mass 5 times of that of the nano zinc oxide into the reaction kettle, carrying out ultrasonic mixing treatment for 8min, adjusting the pH value to 9.7 by ammonia water, then adding methyl methacrylate with the mass 10 times of that of the zinc oxide into the reaction kettle, then respectively adding sodium dodecyl benzene sulfonate, butyl acrylate, potassium persulfate and vinyl trimethoxy silane into the reaction kettle, raising the temperature of the reaction kettle to 45 ℃, and carrying out heat preservation reaction for 8 hours at the temperature; after the reaction is finished, the obtained product is marked as modified polyacrylate; wherein the mass ratio of the methyl methacrylate to the butyl acrylate to the sodium dodecyl benzene sulfonate to the potassium persulfate to the vinyl trimethoxy silane is 1:1:0.18:0.25: 0.43.
The initiator is ammonium persulfate.
The catalyst is dibutyl tin dilaurate.
And (3) performance testing:
the paint films of guitar surfaces (examples 1-3) sprayed with the specialty paints produced according to examples 1-3 of the present invention and the paint films of guitar surfaces (comparative example) sprayed with a commercial topcoat were subjected to performance tests, respectively, and the results are reported in the following table:
1. and (3) testing the adhesive force: the adhesion is classified into seven grades, the best adhesion is first grade, and the worst adhesion is seven grades, according to GB/T1720-1989 paint film adhesion determination method.
2. And (3) testing the wear resistance: taber test CS-172000 times were used.
3. And (3) hardness testing: measured according to GB/T6739-2006 "paint film hardness determination".
4. And (3) testing tensile strength: measured according to the GB/T16777-2008 'test method for waterproof coating for buildings'.
5. Resistance to artificial weather aging: the measurement was carried out in accordance with (GB/T9755-2001)/h.
| Group of | Adhesion/grade | Taber abrasion resistance test CS-172000 times/mg | hardness/H | Tensile strength/MPa | Aging resistance/h |
| Example 1 | 1 | 156 | 4 | 5.1 | 1876 |
| Example 2 | 1 | 162 | 4 | 4.8 | 1768 |
| Example 3 | 1 | 175 | 4 | 5.6 | 1832 |
| Comparative example | 3 | 296 | 2 | 2.6 | 1521 |
From the relevant data in the table, the prepared special paint is sprayed on the surface of a guitar, and the adhesion, the wear resistance, the hardness, the tensile strength and the aging resistance of the produced paint film are obviously superior to those of the commercial finish paint. The special paint provided by the invention has better performance compared with the existing finish paint. Meanwhile, the guitar produced by the method is smaller in internal damping, and the produced guitar has better acoustic quality.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the design concept of the present invention should be included in the scope of the present invention.
Claims (8)
1. A production process of a guitar is characterized in that: the method comprises the following steps:
s1, sorting and selecting the guitar raw materials, reasonably selecting the guitar handle materials, finger plate materials, face plates, back plates and side plates, and drying the guitar raw materials to obtain qualified plates for manufacturing guitars;
s2, obliquely sawing the handle material in a direction of 7 degrees, reversely sticking the handle material together to form a 14-degree oblique position, sequentially performing the working procedures of manufacturing a headstock, installing a handle lump, polishing the handle lump, drilling string buttonholes and the like, and finally manufacturing a handle;
s3, cutting a finger plate material with a specified specification, sawing a wire groove by using a professional machine, and drilling and embedding the sound points on the finger plate by using related mechanical equipment, wherein the accuracy of the standard of the scale is high;
s4, cutting the guitar shape on the selected wood surface for manufacturing the back plate, drawing the guitar shape on the wood by using a template before cutting, cutting by 3-5mm more along the outer ring during cutting, polishing the cutting, and drawing a sound hole on the sound plate;
s5, cutting the guitar shape on the surface of the selected wood for manufacturing the back plate, adhering the sound beam to the back plate by glue, digging radians on two sides of the sound beam by a shovel blade, cleaning the redundant glue on the contact surface of the sound beam and the back plate, pressing the sound beam after adhering, and drying the glue under natural conditions;
s6, measuring the required length before cutting the side plate, wherein the lengths of the fillet and the unfilled corner are different, and selecting different dies; after cutting, a certain bending degree needs to be processed, and then the cut bent part is placed into a die for fixed-line reinforcement; finally, connecting the two side plates by using a connector wood to form a complete guitar shape;
s6, bonding and assembling the panel, the back plate and the side plates by using glue, then carrying out embedding and edge covering treatment on the edge of the guitar body, assembling the guitar sound barrel and the guitar handle after edge covering is finished, and then installing an adjusting rod, a guitar fingerboard and trimming the handle;
s7, transferring the guitar into a spraying room, carrying out full-automatic spraying treatment on the surface of the guitar, and then carrying out fine grinding treatment on the fingerboard; then, the finished product of the guitar is obtained through the working procedures of nailing a product line, polishing primer, sawing a pillow position, attaching a lower code, installing a string button, installing strings, tuning and the like; wherein, when spraying the finish paint, a special paint is adopted.
2. A guitar production process as claimed in claim 1, characterized in that: and in the step S1, the plate materials used by the handle material, the finger plate material, the face plate, the back plate and the side plate are dried until the water content is 6-8%.
3. A guitar production process as claimed in claim 1, characterized in that: and in the S7, a full-automatic electrostatic spraying process is adopted during full-automatic spraying, and the voltage during electrostatic spraying is 35-45 kV.
4. A guitar production process as claimed in claim 1, characterized in that: when spraying is carried out in S7, the resistivity of the powder is 930-1000 omega/cm, and the spraying amount is 300-700 g/min.
5. The guitar production process as set forth in claim 1, wherein the tailor-made paint in S7 is made of the following raw materials in parts by weight: 25-30 parts of unsaturated polyester resin, 8-12 parts of modified polyacrylate, 25-30 parts of styrene, 0.12-0.16 part of coco glucoside, 0.08-0.13 part of glyceryl tristearate, 3-5 parts of isophorone diamine, 0.3-0.6 part of initiator, 1.5-2.1 parts of amorphous white carbon black, 1.2-1.5 parts of catalyst and 0.7-1.2 parts of silane coupling agent KH-560;
the preparation method comprises the following steps: placing unsaturated polyester resin in a reaction kettle, mixing and stirring styrene, coco glucoside and tristearin for 10-20min at the speed of 120-180r/min, then respectively transferring the rest materials into the reaction kettle, carrying out ultrasonic dispersion for 10-20min, then reacting for 3-5h at the temperature of 50-60 ℃, and obtaining a mixed component in the reaction kettle, namely the special paint after the reaction is finished.
6. A guitar production process as claimed in claim 5, characterized in that: the preparation method of the modified polyacrylate comprises the following steps:
adding nano zinc oxide and 0.4-0.9% of methacryloyl propyl trimethoxy silane into a reaction kettle, injecting deionized water with the mass of 3-5 times of that of the nano zinc oxide into the reaction kettle, carrying out ultrasonic mixing treatment for 5-8min, adjusting the pH value of the reaction kettle to 8.6-9.7 by using ammonia water, then adding methyl methacrylate with the mass of 8-10 times of that of the zinc oxide into the reaction kettle, then respectively adding sodium dodecyl benzene sulfonate, butyl acrylate, potassium persulfate and vinyl trimethoxy silane into the reaction kettle, raising the temperature of the reaction kettle to 35-45 ℃, and carrying out heat preservation reaction for 5-8h at the temperature; after the reaction is finished, the obtained product is marked as modified polyacrylate; wherein the mass ratio of the methyl methacrylate to the butyl acrylate to the sodium dodecyl benzene sulfonate to the potassium persulfate to the vinyl trimethoxy silane is 1:1:0.12-0.18:0.20-0.25: 0.35-0.43.
7. A guitar production process as claimed in claim 5, characterized in that: the initiator is any one of ammonium persulfate and potassium persulfate.
8. A guitar production process as claimed in claim 5, characterized in that: the catalyst is dibutyl tin dilaurate.
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| CN113601647A (en) * | 2021-08-05 | 2021-11-05 | 贵州正安娜塔莎乐器制造有限公司 | Automatic production equipment for producing guitar and processing method |
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