CN107958660A - A kind of guitar, lucky allothimorph and preparation method thereof - Google Patents
A kind of guitar, lucky allothimorph and preparation method thereof Download PDFInfo
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- CN107958660A CN107958660A CN201711315232.6A CN201711315232A CN107958660A CN 107958660 A CN107958660 A CN 107958660A CN 201711315232 A CN201711315232 A CN 201711315232A CN 107958660 A CN107958660 A CN 107958660A
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- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L55/00—Compositions of homopolymers or copolymers, obtained by polymerisation reactions only involving carbon-to-carbon unsaturated bonds, not provided for in groups C08L23/00 - C08L53/00
- C08L55/02—ABS [Acrylonitrile-Butadiene-Styrene] polymers
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- 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
- G10D1/00—General design of stringed musical instruments
- G10D1/04—Plucked or strummed string instruments, e.g. harps or lyres
- G10D1/05—Plucked or strummed string instruments, e.g. harps or lyres with fret boards or fingerboards
- G10D1/08—Guitars
-
- 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
- G10D3/06—Necks; Fingerboards, e.g. fret boards
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- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
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- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Stringed Musical Instruments (AREA)
Abstract
The present invention provides a kind of guitar, lucky allothimorph and preparation method thereof, it is related to guitar preparation field, lucky allothimorph includes backboard, side plate and the neck of guitar, and lucky allothimorph is using carbon fiber composite reinforced material as raw material, is integrally formed by Shooting Technique obtained；Carbon fibre reinforced composite count in parts by weight including：20~80 parts of acrylonitrile butadient styrene, 15~35 parts of carbon fiber, 5~30 parts of acrylonitrile styrene copolymer.This Ji allothimorph can the production efficiency for forming complete guitar, being greatly improved guitar be bonded with panel and sound beam；Obtained guitar has preferable tonequality, its volume and acoustical behavior are above wooden guitar, and without being powered, you can directly play.
Description
Technical field
The present invention relates to guitar preparation field, in particular to a kind of guitar, lucky allothimorph and preparation method thereof.
Background technology
At present, commercially available guitar mainly has two kinds, wooden guitar and plastic material guitar.Wherein, wooden guitar, is typically
Major component, such as backboard, panel, side plate, sound beam and neck etc. are obtained after manually being processed with particular wood material, then uses glue again
Major component progress manual adhesive is prepared water.The processing of this wooden guitar needs nearly 200 procedure, and processing technology is numerous
It is trivial；And need specific timber to meet the tonequality demand of guitar, such as it is dragon spruce to make the most common material of panel, the place of production
Difference, the panel quality made are also different；Backboard and side plate need quality hard solid, therefore common timber has Brazil
Rose wood, African padank wood etc.；Mahogany and maple are most common neck timber；Most wooden guitar fingerboard materials'uses
Ebony or rose wood.Thus the low production efficiency of wooden guitar is caused, price is high, and the uniformity of product quality is poor.This
Outside, since the influence of timber climate is bigger, too wet and too dry all can cause wooden guitar to deform, even slight
Deformation can all influence the tonequality of guitar.
And the guitar of plastic material, electric guitar is substantially, it is necessary to could be played on the premise of energization, it is otherwise lucky
He will not make a sound.Due to others, to prepare influence of the material to its tonequality, volume etc. most important, and existing at present
Thermoplastic, its mechanical strength, specific strength, pliability etc. are difficult to meet the needs of manufacturing guitar.Thus, at present
On the market also without the plastic material guitar for occurring being prepared by thermoplastic and can directly being played without energization.
The content of the invention
The first object of the present invention is to provide a kind of lucky allothimorph, and this Ji allothimorph is backboard, side plate and neck
Component is integrally formed, can the production efficiency for forming complete guitar, being greatly improved guitar be bonded with panel and sound beam.
The second object of the present invention is to provide a kind of preparation method of lucky allothimorph, which passes through Shooting Technique
Can obtain the backboard of guitar, side plate and neck is integrally formed component, and preparation method is simple, with short production cycle, production efficiency
It is high.
The third object of the present invention is to provide a kind of guitar for including above-mentioned lucky allothimorph, which has preferable sound
Matter, its volume and acoustical behavior are above wooden guitar, and without being powered, you can directly play.
In order to realize the above-mentioned purpose of the present invention, spy uses following technical scheme：
A kind of preparation method of Ji allothimorph, the Ji allothimorph include backboard, side plate and the neck of guitar, and lucky allothimorph is
Using carbon fiber composite reinforced material as raw material, it is integrally formed by Shooting Technique obtained；
Carbon fibre reinforced composite count in parts by weight including：Acrylonitrile-butadiene-styrene copolymer 20~80
Part, 15~35 parts of carbon fiber, 5~30 parts of acrylonitritrile-styrene resin.
One kind lucky allothimorph as made from above-mentioned preparation method.
A kind of guitar, it includes above-mentioned lucky allothimorph.
Compared with prior art, beneficial effects of the present invention for example including：
This lucky allothimorph provided by the invention, is that the backboard of guitar, side plate and neck are integrally formed component, it can be with
Panel and sound beam are bonded to form complete guitar, are not only able to break through the limitation on conventional wooden guitar material, additionally it is possible to subtract
The preparation section of few guitar, reduce complicated handwork, is greatly improved the production efficiency of guitar, while also ensure that Ji
The uniformity of his quality.Simultaneously as the material that the present invention prepares lucky allothimorph be carbon fibre reinforced composite, its with compared with
High specific strength, bending modulus and impact strength so that the guitar including the Ji allothimorph has preferable tonequality, its volume and
Acoustical behavior is above wooden guitar, and without being powered, you can directly play.
In addition, by the guitar of this carbon fibre reinforced composite injection molding, smooth appearance, it is possible to achieve spraying；And
Since the heat distortion temperature of this carbon fibre reinforced composite is up to 100 DEG C, the humidity of 15-85% does not influence its performance, because
This may insure there is wide in range temperature in use and humidity range by guitar prepared by this carbon fibre reinforced composite, extend it
Service life.
Embodiment
Embodiment of the present invention is described in detail below in conjunction with embodiment, but those skilled in the art will
Understand, the following example is merely to illustrate the present invention, and is not construed as limiting the scope of the invention.It is not specified in embodiment specific
Condition person, the condition suggested according to normal condition or manufacturer carry out.Reagents or instruments used without specified manufacturer, is
The conventional products that can be obtained by commercially available purchase.
Present embodiment provides a kind of guitar, it includes two parts：The panel tone beam of lucky allothimorph, guitar.Wherein, guitar
Type body, it includes the backboard of guitar, side plate and neck, it be bonded with panel and sound beam can form complete guitar.This guitar
It can solve the problems, such as that existing wooden guitar production process is complicated at the same time；And plastic material guitar need be powered can just play ask
Topic.
Further, lucky allothimorph, the panel tone beam of guitar are using carbon fiber composite reinforced material as raw material, pass through note
Modeling technique is integrally formed obtained.
Wherein, carbon fibre reinforced composite, is that inventor is used to prepare pleasure by one kind that the research of several years is just found
The thermoplastic of device.The carbon fibre reinforced composite has higher specific strength, bending modulus and deformation temperature, can
Ensure that guitar prepared therefrom has good tonequality, and make it have excellent drop resistant performance and dimensional stability.
Although at present, thermoplastic species of the prior art has very much, non-reinforcing thermoplastic, bending die
Low, to be produced from it guitar neck is measured, bears the pulling force of incessantly metal string；And the guitar panel poor rigidity being produced from it, altogether
Shake is not strong, and volume is small, lower tone.
By the thermoplastic of fiberglass reinforced, it is necessary to during the very high content of glass, the bending modulus of material could improve, but
While the density for also resulting in moulding is big, specific strength is small, and due to the addition of a large amount of glasses, moulding rough surface, nothing
Method further sprays.
In contrast, the density of carbon fiber is small, in addition the bending modulus of the fibre reinforced thermoplastic of equal volume
Glass fiber enhanced thermoplastic material is substantially better than, therefore selects fibre reinforced thermoplastic proper.However, the fine enhancing of carbon
Thermoplastic species it is very much, resin has crystal class, also there is non-crystal class.
In general, musical instrument is very high to the dimensional stability requirements of material, if the dimensional stability of material is bad, can influence to find pleasure in
The quality of device, such as the tension force of guitar metallic cord can be influenced, so as to influence the tonequality of guitar.The crystallization resinoid of fibre reinforced
The poor dimensional stability of material, therefore the preferably amorphous resinous materials of fibre reinforced.
Non-crystalline material species is relatively more, for example, makrolon (PC), acrylonitrile-butadiene-styrene copolymer (ABS),
Acrylonitritrile-styrene resin (AS), polystyrene (PS), polystyrene (PPE) etc..General-purpose plastics is molded into than engineering plastics
Type is easy, and forming temperature is also low, since integrally formed component of musical instrument is very big, the preferred general-purpose plastics of good fluidity.It is common
Carbon fibre reinforced ABS material, the problems such as having floating fibre there are bending modulus deficiency, buckling deformation, surface and cannot spray, is unsatisfactory for making
The requirement of standby musical instrument.
On the basis of above-mentioned analysis, this novel carbon fiber for being used to manufacture musical instrument that the present invention uses strengthens composite wood
Material meter in parts by weight includes：
20~80 parts of acrylonitrile-butadiene-styrene copolymer (ABS resin),
15~35 parts of carbon fiber,
5~30 parts of acrylonitritrile-styrene resin (AS resins).
Further, count in parts by weight, carbon fibre reinforced composite includes：30~70 parts of ABS resin, carbon fiber 20
~30 parts, 10~25 parts of AS resins；
Alternatively, counting in parts by weight, carbon fibre reinforced composite includes：40~60 parts of ABS resin, carbon fiber 23~28
Part, 15~20 parts of AS resins；
Alternatively, counting in parts by weight, carbon fibre reinforced composite includes：45~55 parts of ABS resin, carbon fiber 24~26
Part, 17~18 parts of AS resins.
Further, carbon fiber is chopped carbon fiber, a diameter of 5~10 μm of the grain of chopped carbon fiber, or for 6~9 μm,
Or for 7~8 μm.The number and diameter of chopped carbon fiber can influence the bending modulus and density of material, so as to influence material
Specific strength.
Further, the number-average molecular weight of acrylonitritrile-styrene resin is 18000~22000.
Further, carbon fibre reinforced composite further includes 0.2~0.6 part of the antioxidant counted in parts by weight, lubrication
0.4~0.8 part of agent；Alternatively, antioxidant is 0.3~0.5 part, 0.5~0.7 part of lubricant；Alternatively, antioxidant is 0.4 part, lubrication
0.6 part of agent.
Wherein, antioxidant includes β-positive octadecanol ester of (3,5- di-tert-butyl-hydroxy phenyl) propionic acid and three [2.4- bis-
At least one of tert-butyl-phenyl] phosphite ester.It is more preferable, antioxidant count in parts by weight including：β-(bis- uncles of 3,5-
Butyl -4- hydroxy phenyls) 0.1~0.3 part of the positive octadecanol ester of propionic acid, three [2.4- di-tert-butyl-phenyls] phosphite esters 0.1~
0.3 part.
Wherein, lubricant includes at least one of zinc stearate and ethylene bis stearamide.It is more preferable, lubricant
Meter includes in parts by weight：0.2~0.4 part of zinc stearate, 0.2~0.4 part of ethylene bis stearamide.
The preparation method of this carbon fibre reinforced composite, including：
Step S1:In parts by weight, by acrylonitrile-butadiene-styrene copolymer, acrylonitritrile-styrene resin with
Auxiliary agent mixes, and obtains mixed material.
Wherein, auxiliary agent is antioxidant and lubricant.
More specifically, mixed using pre-mixing agent, i.e., by weight by acrylonitrile-butadiene-styrene copolymer,
Acrylonitritrile-styrene resin is added in premixing machine with auxiliary agent, is mixed 3~5min, is obtained uniform mixed material.
Step S2:After mixed material is mixed with carbon fiber, extruding pelletization.
Further, which includes：After mixed material to be kneaded at 200~230 DEG C to melting, then mix with carbon fiber
Close, after being kneaded melting at 180~220 DEG C, extruding pelletization, and cooled down at 25~45 DEG C.
Further, carbon fibre reinforced composite is prepared by extruder, in order to increase the dispersiveness of component, is squeezed
The screw slenderness ratio for going out machine is 46~50：1, or be 47~49：1.
Further, the temperature setting of extruder includes：T1 areas (80-120 DEG C), T2 areas (180-220 DEG C), T3 areas
(180-220 DEG C), T4 areas (180-230 DEG C), T5 areas (190-230 DEG C), T6 areas (180-220 DEG C), T7 areas (170-210 DEG C),
T8 areas (170-210 DEG C), T9 areas (170-210 DEG C), T10 areas (170-210 DEG C), T11 areas (180-220 DEG C), T12 areas (180-
220℃)；The temperature in head area is 190~230 DEG C.
The carbon fibre reinforced composite prepared by this method, has higher specific strength, bending modulus and thermal change
Shape temperature, so that it is guaranteed that the tonequality of musical instrument prepared therefrom, can be used to prepare the musical instruments such as guitar, piano backboard, Chinese lute.This material
Material can be integrally formed major component for preparing musical instrument by Shooting Technique, and traditional component of musical instrument is prepared by timber so as to substitute
Limitation, greatly improve the manufacture efficiency of musical instrument.
In the present embodiment guitar is prepared with this carbon fibre reinforced composite：
Lucky allothimorph is all using above-mentioned carbon fiber composite reinforced material as raw material, is integrally formed by Shooting Technique obtained.
Further, after in order to avoid injection molding, the contraction trace of moulding surface generation, adopts Gas assisted injection moulding work
Skill, using nitrogen or inert gas as auxiliary gas, the auxiliary pressure of gas is 200~350MPa, or is 230~320MPa, Huo Zhewei
250~280MPa, or be 260~270MPa.Such as when preparing lucky allothimorph, backboard is first molded into, then toward moulding
Centre is passed through nitrogen or inert gas (such as helium) eliminates the contraction trace of back plate surface.
Further, Shooting Technique includes：Raw material is melted at 160~200 DEG C, and is kept the temperature at 230~270 DEG C
Afterwards, the injection molding into the guitar type mould that temperature is 70~120 DEG C is sprayed.
Further, the injection pressure in Shooting Technique is 60~90%, shaping total time of lucky allothimorph for 240~
280s, is either 250~270s or is 255~265s.
Further, lucky allothimorph is prepared by injection molding machine, and the clamp force tonnage of injection molding machine is 800~1400
Ton, the injection temperature of injection molding machine, which is set, to be included：T1 areas are (160-200 DEG C), T2 areas (230-270 DEG C), T3 areas (230-270
DEG C), T4 areas (230-270 DEG C), nozzle region (240-280 DEG C)；Injection pressure, which is set, to be included：P1 areas (60-90%), P2 areas (60-
90%), P3 areas (60-90%), P4 area (60-90%), wherein gross pressure are 140kgf/cm2；Injection moulding speed, which is set, to be included：V1
Area (20-50%), V2 areas (40-80%), V3 areas (50-90%), wherein V4 areas (10-40%), general speed are 120~150mm/
s。
Guitar be by panel, backboard, scroll head, side plate, metallic support rod etc. 5 formed with upper-part.Traditional preparation methods
In, all it is to be bonded again with glue after each several part is independently made.And present embodiment utilizes carbon fibre reinforced composite
Guitar is prepared for raw material, it is only necessary to which integrally formed guitar panel tone beam portion point and guitar are respectively obtained by Shooting Technique twice
Type body portion (including guitar backboard, side plate and neck), then be bonded two parts with glue, you can obtain complete Ji
He.And since the bending modulus of this carbon fiber composite reinforced material is high (19000Mpa), without using metallic support rod with regard to energy
Ensure that guitar is indeformable under the pulling force of string, and just must be provided with metallic support rod on traditional wooden guitar neck can just prevent
Deformation.
Therefore, this guitar that present embodiment provides.It is not only able to break through conventional wooden guitar on its preparation method
Limitation on material, additionally it is possible to reduce the preparation section of guitar, reduce complicated handwork, be greatly improved guitar
Production efficiency, while also ensure that the uniformity of guitar quality.Meanwhile compared to existing electric guitar, it is this to be increased by carbon fiber
Guitar prepared by strong composite material, has distinctive tonequality, its volume and acoustical behavior are above wooden guitar, and without logical
Electricity, you can played.In addition, by the guitar of this carbon fibre reinforced composite injection molding, smooth appearance, it is possible to achieve
Spraying；And since the heat distortion temperature of this carbon fibre reinforced composite is up to 100 DEG C, the humidity of 15-85% does not influence it
Performance, it is hereby ensured that the guitar prepared by this carbon fibre reinforced composite has wide in range temperature in use and humidity model
Enclose, service life length.
The feature and performance of the present invention are described in further detail with reference to embodiments：
The preparation method of carbon fibre reinforced composite：
A. by weight by the acrylonitrile-butadiene-styrene copolymer in raw material, acrylonitritrile-styrene resin, with
And auxiliary agent mixing, obtain mixed material；Wherein, auxiliary agent includes：β-positive 18 carbon of (3,5- di-tert-butyl-hydroxy phenyls) propionic acid
0.2 part of alcohol ester, three 0.2 part of [2.4- di-tert-butyl-phenyls] phosphite esters, 0.3 part of zinc stearate, ethylene bis stearamide 0.3
Part.
B., after said mixture material to be kneaded at 200~230 DEG C to melting, then mix with chopped carbon fiber, in 180~
After melting being kneaded at 220 DEG C, extruding pelletization, and cooled down at 25~45 DEG C, to obtain the final product.
Embodiment 1
The present embodiment provides a kind of lucky allothimorph, its preparation method includes：
, as raw material, to be led to by carbon fiber composite reinforced material made from above-mentioned carbon fibre reinforced composite preparation method
Cross injection molding machine to be prepared, the clamp force tonnage of injection molding machine is 800~1000 tons.
Injection moulding process：After raw material is melted, after keeping the temperature a period of time in barrel, it is guitar type mould to spray to temperature
Middle injection molding.
Specific gas-assisted injection molding parameter is as follows：
Injection temperature：T1 areas (160-200 DEG C), T2 areas (230-270 DEG C), T3 areas (230-270 DEG C), T4 areas (230-270
DEG C), nozzle region (240-280 DEG C)；
Injection pressure：P1 areas (60-90%), P2 areas (60-90%), P3 areas (60-90%), P4 areas (60-90%)；Wherein
Gross pressure is 140kgf/cm2。
Injection moulding speed：V1 areas (20-50%), V2 areas (40-80%), V3 areas (50-90%), V4 areas (10-40%)；Wherein
General speed is 120~150mm/s.
Mould holding temperature：70~90 DEG C
It is molded total time：240~260s
Aid in gas：Nitrogen；
The auxiliary pressure of gas：200~250Mpa.
Embodiment 2
The present embodiment provides a kind of lucky allothimorph, its preparation method includes：
, as raw material, to be led to by carbon fiber composite reinforced material made from above-mentioned carbon fibre reinforced composite preparation method
Cross injection molding machine to be prepared, the clamp force tonnage of injection molding machine is 1000~1200 tons.
Injection moulding process：After raw material is melted, after keeping the temperature a period of time in barrel, it is guitar type mould to spray to temperature
Middle injection molding.
Specific gas-assisted injection molding parameter is as follows：
Injection temperature：T1 areas (160-190 DEG C), T2 areas (240-260 DEG C), T3 areas (250-270 DEG C), T4 areas (260-270
DEG C), nozzle region (260-280 DEG C)；
Injection pressure：P1 areas (60-90%), P2 areas (60-90%), P3 areas (60-90%), P4 areas (60-90%)；Stagnation pressure
Power is 140kgf/cm2。
Injection moulding speed：V1 areas (20-50%), V2 areas (40-80%), V3 areas (50-90%), V4 areas (10-40%)；Total speed
Degree is 120-150mm/s；
Mould holding temperature：80~100 DEG C；
It is molded total time：255~265s；
Aid in gas：Helium；
The auxiliary pressure of gas：270~320Mpa.
Embodiment 3
The present embodiment provides a kind of lucky allothimorph, its preparation method includes：
, as raw material, to be led to by carbon fiber composite reinforced material made from above-mentioned carbon fibre reinforced composite preparation method
Cross injection molding machine to be prepared, the clamp force tonnage of injection molding machine is 1200~1400 tons.
Injection moulding process：After raw material is melted, after keeping the temperature a period of time in barrel, it is guitar type mould to spray to temperature
Middle injection molding.
Specific gas-assisted injection molding parameter is as follows：
Injection temperature：T1 areas (160-180 DEG C), T2 areas (230-250 DEG C), T3 areas (240-260 DEG C), T4 areas (250-280
DEG C), nozzle region (260-280 DEG C)；
Injection pressure：P1 areas (60-90%), P2 areas (60-90%), P3 areas (60-90%), P4 areas (60-90%)；Wherein
Gross pressure is 140kgf/cm2；
Injection moulding speed：V1 areas (20-50%), V2 areas (40-80%), V3 areas (50-90%), V4 areas (10-40%)；Wherein
General speed is 120~150mm/s.
Mould holding temperature：100~120 DEG C；
It is molded total time：260~280s；
Aid in gas：Nitrogen；
The auxiliary pressure of gas：310~350Mpa.
Embodiment 4
The present embodiment provides a kind of 38 cun of guitars, its preparation method includes：
(1) preparation of the panel tone beam of guitar：Using carbon fiber composite reinforced material as raw material, it is prepared into by Shooting Technique
Arrive.
(2) prepared by guitar：The lucky allothimorph that panel tone beam made from step (1) and embodiment 1~3 provide, is glued with glue
Close；After the guitar assembled is integrally polished flat with skin grinder, sprayed；Capotasto, string standard, string etc. is finally installed to match somebody with somebody
Part, that is, obtain a complete plastics guitar that can be directly used for playing.
With reference to performance test data to this carbon fibre reinforced composite provided by the invention and guitar performance
Evaluated.
(1) according to the preparation method of above-mentioned carbon fibre reinforced composite, system is matched according to the raw material components described in table 1
Standby carbon fibre reinforced composite, and it is tested for the property according to iso standard, the number of carbon fiber is probed into composite material
The influence of performance, as a result as described in Table 1：
Influence of the number of 1. carbon fiber of table to composite property
As can be seen from Table 1, what carbon fibre number mainly influenced is the bending modulus and density of material, so as to influence material ratio
Intensity.The specific strength of material influences the resonance of guitar panel and body, so as to influence the volume and tonequality of guitar, specific strength is got over
Height, volume can be bigger.Bending modulus influences the stretching resistance of guitar neck at the same time, and bending modulus is higher, and the pulling force for resisting string is got over
Greatly, neck is not more just allowed yielding.
Contrast understands that the specific strength of material is too low in comparative example 1, and resonance effect is very weak, can not produce bass, in addition high pitch
Also it is incomplete.In addition the bending modulus of material is too low in comparative example 1, can not resist the pulling force of string.
(2) according to the preparation method of above-mentioned carbon fibre reinforced composite, system is matched according to the raw material components described in table 2
Standby carbon fibre reinforced composite, and it is tested for the property according to iso standard, the number of ABS is probed into composite material
The influence of energy, as a result as described in Table 2：
Influence of the number of table 2.ABS to composite property
As can be seen from Table 2, what the number of ABS mainly influenced is the notched impact properties of material, so as to influence material punching
Hit toughness.The notch impact strength of the higher material of ABS contents is higher, illustrates the impact resistance of the material and strengthens, but ABS
Add, the specific strength of material can be reduced, therefore suitable ABS number scopes are 25~80 parts.
(3) according to the preparation method of above-mentioned carbon fibre reinforced composite, system is matched according to the raw material components described in table 3
Standby carbon fibre reinforced composite, and it is tested for the property according to iso standard, the number of AS is probed into composite property
Influence, as a result as described in Table 3：
Influence of the number of table 3.AS to composite property
As can be seen from Table 3, mobility and glossiness when what the number of AS mainly influenced is material melting injection, flowing
Property it is good, when being molded guitar body, component can be allowed easily to be full of mold cavity, but AS additions more after, the notch of material can be allowed to rush
Hit intensity declines.After the material molten of comparative example 2, poor fluidity, when being molded lucky allothimorph, can not make；And moulding
Glossiness is very poor, can not carry out spray paint, can not finally manufacture guitar.And the material of comparative example 3, due to notch strength too
It is low, so that can not test, manufacture guitar, when shock can rupture, and can not manufacture guitar.Therefore, the suitable scopes of AS are 5
~30 parts.
(4) according to the preparation method of above-mentioned carbon fibre reinforced composite, system is matched according to the raw material components described in table 4
Standby carbon fibre reinforced composite, and it is tested for the property according to iso standard, the molecular weight of AS is probed into composite material
The influence of energy, as a result as described in Table 4：
Influence of the molecular weight of table 4.AS to composite property
By in table 4 AS of different molecular weight contrast as can be seen that AS molecular weight effects be material melting be molded when
Mobility and glossiness, good fluidity, when being molded lucky allothimorph, can allow component to be easily full of mold cavity, but AS molecular weight mistakes
It is high, it is impossible to the mobility and glossiness of material are lifted, it is too low that material can be allowed highly brittle, therefore suitable molecular weight ranges are 9000
~12000.
(5) 38 cun of guitars are prepared using embodiment 4, is contrasted with commercially available 38 cun of wooden guitars, as a result such as the institute of table 5
Show：
5. guitar performance comparison of table
Since the volume of guitar is directly proportional to the bending modulus of material and specific strength, bending modulus is higher, and specific strength is bigger,
The volume of guitar can be bigger.As shown in Table 5, the guitar provided by the present embodiment 4, under comparable size, volume tenuto is superior to
Wooden guitar is bought in city, and has wider range of temperature in use and humidity.
Although being illustrated and the invention has been described with specific embodiment, but will be appreciated that without departing substantially from the present invention's
Many other change and modification can be made in the case of spirit and scope.It is, therefore, intended that in the following claims
Including belonging to all such changes and modifications in the scope of the invention.
Claims (10)
1. a kind of preparation method of Ji allothimorph, it is characterised in that the Ji allothimorph includes backboard, side plate and the qin of guitar
Neck, the Ji allothimorph is using carbon fiber composite reinforced material as raw material, is integrally formed by Shooting Technique obtained；
The carbon fibre reinforced composite count in parts by weight including：Acrylonitrile-butadiene-styrene copolymer 20~80
Part, 15~35 parts of carbon fiber, 5~30 parts of acrylonitritrile-styrene resin.
2. the preparation method of Ji allothimorph according to claim 1, it is characterised in that in the injection work of the lucky allothimorph
In skill, using Gas assisted injection moulding technique, using nitrogen or inert gas as auxiliary gas, the auxiliary pressure of gas is 200~350MPa.
3. the preparation method of Ji allothimorph according to claim 1, it is characterised in that the Shooting Technique includes：
Raw material is melted at 160~200 DEG C, and at 230~270 DEG C after insulation, is sprayed to the Ji that temperature is 70~120 DEG C
Injection molding in alloytype mould.
4. the preparation method of Ji allothimorph according to claim 1, it is characterised in that the injection pressure in the Shooting Technique
Power is 60~90%, and shaping total time is 240~280s.
5. the preparation method of Ji allothimorph according to claim 1, it is characterised in that the Ji allothimorph is to pass through injection
Machine is prepared, and the clamp force tonnage of the injection molding machine is 800~1400 tons, and the injection temperature of the injection molding machine, which is set, to be included：
T1 areas are (160-200 DEG C), T2 areas (230-270 DEG C), T3 areas (230-270 DEG C), T4 areas (230-270 DEG C), nozzle region (240-
280℃)；Injection pressure, which is set, to be included：P1 areas (60-90%), P2 areas (60-90%), P3 areas (60-90%), P4 areas (60-
90%), wherein gross pressure is 140kgf/cm2；Injection moulding speed, which is set, to be included：V1 areas (20-50%), V2 areas (40-80%), V3
Area (50-90%), wherein V4 areas (10-40%), general speed are 120-150mm/s.
6. the preparation method of Ji allothimorph according to claim 1, it is characterised in that the carbon fiber is the carbon fibre that is chopped
Dimension, the particle diameter of the chopped carbon fiber is 5~10 μm.
7. the preparation method of Ji allothimorph according to claim 1, it is characterised in that described acrylonitrile-styrene copolymerized
The number-average molecular weight of thing is 18000~22000.
8. the preparation method of Ji allothimorph according to claim 1, it is characterised in that the carbon fibre reinforced composite
Further include 0.4~0.8 part of 0.2~0.6 part of antioxidant, the lubricant counted in parts by weight.
9. one kind lucky allothimorph as made from preparation method according to any one of claims 1 to 8.
10. a kind of guitar, it is characterised in that it includes lucky allothimorph as claimed in claim 9.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711315232.6A CN107958660A (en) | 2017-12-12 | 2017-12-12 | A kind of guitar, lucky allothimorph and preparation method thereof |
| PCT/CN2018/115400 WO2019114485A1 (en) | 2017-12-12 | 2018-11-14 | Guitar, guitar molded body, panel sound beam and preparation method therefor |
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| CN201711315232.6A CN107958660A (en) | 2017-12-12 | 2017-12-12 | A kind of guitar, lucky allothimorph and preparation method thereof |
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| CN107958660A true CN107958660A (en) | 2018-04-24 |
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| CN114231002A (en) * | 2021-12-06 | 2022-03-25 | 金发科技股份有限公司 | PC composite material and preparation method and application thereof |
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