CN101720053B - Speaker vibration film made of non-wood fibers and manufacture process thereof - Google Patents
Speaker vibration film made of non-wood fibers and manufacture process thereof Download PDFInfo
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- CN101720053B CN101720053B CN 200910193854 CN200910193854A CN101720053B CN 101720053 B CN101720053 B CN 101720053B CN 200910193854 CN200910193854 CN 200910193854 CN 200910193854 A CN200910193854 A CN 200910193854A CN 101720053 B CN101720053 B CN 101720053B
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Abstract
The invention relates to a speaker vibration film made of non-wood fibers. The vibration film is prepared from the following raw materials in percentage by weight: 15-40% of grass fiber, 20-45% of cotton fiber and 15-65% of bast fiber. The speaker vibration film made of the non-wood fibers has short production period, great yield, relatively low price and high economic benefits, can not cause obvious adverse effect on the ecological environment by extensive use and have rich performance presentations.
Description
Technical field
The present invention relates to the diaphragm of loudspeaker, the diaphragm of loudspeaker that especially utilizes non-wood to make.
Background technology
The conventional string class diaphragm of loudspeaker is to be primary raw material with the wood fibre, again according to the performance requirement of dissimilar loud speakers, adds and makes after a certain amount of other fiber and function additive mix.
The employed wood fibre of the string class diaphragm of loudspeaker of above-mentioned routine is characterized in that fibre length is more even more single; According to different pulping process, can obtain the wood fibre of different soft and hard degree, but disparity range is less.
Above-mentioned is that the occupation rate of market of the diaphragm of loudspeaker of primary raw material is about 90% with the wood fibre, make the required wood fibre of this diaphragm of loudspeaker and be mainly derived from wood fibre in pine tree and the Chinese fir, need the corresponding trees of felling to obtain as raw material, and the production cycle of pine tree and Chinese fir is relative longer, in case need the long time to recover after being cut down.Carrying out in a large number with the wood fibre is the production of the diaphragm of loudspeaker of primary raw material, has directly accelerated the minimizing of the forest reserves, remote-effects the natural ecological balance, be unfavorable for the reasonable utilization of natural resources and the sustainable development of biological environment.
The minimizing of the forest reserves causes the imbalance of supply and demand possibly, causes the raw material sources of conventional string class loud speaker to reduce gradually.Therefore, be the conventional plant fiber-like diaphragm of loudspeaker of primary raw material with the wood fibre, have following several shortcoming:
1) derive from the wood fibre of pine tree and Chinese fir, feature is comparatively single, and the physical property disparity range is less, is that the diaphragm of loudspeaker of primary raw material is difficult to have abundant performance performance with this fiber;
2) minimizing of the forest reserves has been accelerated in a large amount of productions of the above-mentioned diaphragm of loudspeaker to a certain extent, and biological environment has been caused harmful effect;
3) in foreseeable period, the cost of above-mentioned diaphragm of loudspeaker raw material can raise, and causes that economic benefit descends;
For these reasons, seek the material of alternative wood fibre, the primary raw material that is used as the string class diaphragm of loudspeaker is a problem that needs to be resolved hurrily.
Summary of the invention
One of technical problem purpose to be solved by this invention provides the diaphragm of loudspeaker that a kind of non-wood is made, and is with short production cycle with the diaphragm of loudspeaker that non-wood is made, output is big, price is relatively low, economic benefit is high; A large amount of uses can not cause tangible harmful effect to biological environment; The diaphragm of loudspeaker has abundant performance performance.
Two of the object of the invention provides a kind of manufacturing process of the diaphragm of loudspeaker of non-wood making, cooperates the special material fiber, produces to have the diaphragm of loudspeaker that enriches performance.
For solving the problems of the technologies described above, a present invention wherein technical scheme is: the diaphragm of loudspeaker that a kind of non-wood is made, and make the raw material of described vibrating diaphragm and formed by grass fiber, cotton fiber, bast fiber.
Grass fiber is the widest a kind of natural plants of the fastest distribution of occurring in nature breeding, only needs its growth period about half a year to one year, and can recover original appearance again less than some months after harvesting.So use grass fiber not only can not destroy natural environment as the loudspeaker assembly raw material, and raw material supply is abundant, with low cost, be the raw material that a kind of very good diaphragm of loudspeaker uses.Cotton fibre also is a kind of non-wood raw material of high-quality, and the product physical strength of being made by cotton fiber is big, and toughness is strong, and it is careful and tender to organize, and has bigger damping simultaneously, and the characteristics that its soft or hard is taken into account make the diaphragm of loudspeaker have abundanter physical characteristic.In addition, the kind of grass fiber and cotton fiber is more, and corresponding also have multiple different fiber characteristics and a physical property, has abundant performance performance through the suitable collocation diaphragm of loudspeaker that can to make with these two kinds of fibers be primary raw material.Generally speaking, because the intensity of grass fiber is good not as the needle-leaved wood fibre of general usefulness, so when using the diaphragm of loudspeaker of making as primary raw material with grass fiber, need other non-wood of collocation to strengthen the physical strength of the diaphragm of loudspeaker, make it to reach the required electroacoustic performance of loud speaker.In non-wood, in the bast fiber and stronger toughness and the elasticity of tool, and can reach the effect of learning from other's strong points to offset one's weaknesses after the grass fiber collocation.Be the diaphragm of loudspeaker-sample 1 of primary raw material manufacturing and carry out a large amount of frequency sound tests by the diaphragm of loudspeaker-sample 2 of grass fiber, cotton fiber, bast fiber manufacturing at wood fibre,
Test shows: in low-frequency range, before the 1KHz, the curve of the two is close; High frequency treatment, after the 1KHz, the whole sound pressure level height of the curve of the curve ratio sample 1 of sample 2.The distortion curve contrast: the distortion highest point of sample 2 has only about 6%, and the highest distortion of sample 1 reaches 25%.Result of the test draws: be the diaphragm of loudspeaker that raw material is made with grass fiber, cotton fiber, bast fiber, its loudspeaker performance is that can to reach even be better than conventional wood fibre be the diaphragm of loudspeaker that primary raw material is made.
In three kinds of fibrous raw materials of the diaphragm of loudspeaker, with the vibrating diaphragm that different proportionings are made, its characteristic is different, can have good physical property and electroacoustic performance for making the diaphragm of loudspeaker, and the weight proportion of three kinds of non-woods is as follows:
Described grass fiber accounts for the vibrating diaphragm raw material weight than 15%～40%
Described cotton fiber accounts for the vibrating diaphragm raw material weight than 20%～45%
Described bast fiber accounts for the vibrating diaphragm raw material weight than 15%～65%
As improvement, described grass fiber is mainly Spanish grass (Esparto) fiber, Chinese alpine rush fiber, sugarcane fibre or reed fiber; Described cotton fiber is mainly cotton fiber, villus fiber, top cotton fiber or bombax cotton; Described bast fiber is mainly sisal fiber, manila hemp fiber, Sanya bark fiber, bastose or flax fiber.
As improvement, described grass fiber is that the Spanish grass (Esparto) fiber accounts for weight ratio 15%～40% greatly, and described cotton fiber is that cotton fiber accounts for weight ratio 20%～45% greatly, and described bast fiber is that manila hemp fiber accounts for weight ratio 15%～65% greatly.
As improvement, described grass fiber is that the Chinese alpine rush fiber accounts for weight ratio 15%～40% greatly, and described cotton fiber is that villus fiber accounts for weight ratio 20%～45% greatly, and described bast fiber is that sisal fiber accounts for weight ratio 15%～65% greatly.
As improvement, described grass fiber is that sugarcane fibre accounts for weight ratio 15%～40% greatly, and described cotton fiber is that top cotton fiber accounts for weight ratio 20%～45% greatly, and described bast fiber is that bastose accounts for weight ratio 15%～65% greatly.
As improvement, described grass fiber is that reed fiber accounts for weight ratio 15%～40% greatly, described cotton fiber is that bombax cotton accounts for weight ratio 20%～45% greatly, and described bast fiber is that flax fiber accounts for weight ratio 10%～40% greatly and the Sanya bark fiber accounts for weight ratio 5%～25% greatly.
Another technical scheme of the present invention is: the manufacturing process of the diaphragm of loudspeaker that a kind of non-wood is made, and make the raw material of described vibrating diaphragm and formed by grass fiber, cotton fiber, bast fiber; The manufacturing technology steps of vibrating diaphragm is followed successively by: fibrous raw material is mixed into pulpboard, pulpboard immersion, hydrabrusher pulping, beater and pulls an oar into opening slurry and disperseing, drag for slurry moulding, the vacuum dehydration of l Water Paper embryo, hot-forming, die-cut, vibrating diaphragm monomer of the adding of wet pulp, additive, wet pulp.
Grass fiber cell membrane used in the present invention is made up of primary wall, outer layer of secondary wall, central layer of secondary and secondary wall internal layer, wherein outer layer of secondary wall is thicker, and microfibre is the intersection helical arrangement, and the central layer of secondary microfibre is to be close to the fiber axially-aligned, therefore is difficult to wire-dividing broom purification at pulping process.Generally speaking, the intensity of grass fiber is good not as needle timber, more easily be cut off during making beating, thereby tearability descends after making product, and tensile strength, bursting strength and folding strength all can correspondingly reduce simultaneously.For addressing this problem, at first we are placed on the straw pulp fiber in the water and soaked 6 hours, allow the straw pulp fiber swollen that fully absorbs water, and make fiber become more soft, and toughness strengthens, and fiber is not easy to be cut off when making beating like this.Then, we have changed the beating process of straw pulp fiber, change the free beating mode (concentration 3～5%) of routine into half shiny beating (concentration 6～8%), cutter spacing also by light cutter, middle cutter, heavy cutter, change discongest, light cutter, middle cutter, heavy cutter, shorten the heavy cutter time simultaneously and increase in the beating time of cutter.The purpose of doing so mainly is to reduce the cut-out of fiber as far as possible, allow fibre swelling, rub, conquassation, fibrillating, increase the intensity of making beating back fiber, thereby improve the physical strength of cone, guarantee that the electroacoustic performance of loud speaker adheres to specification.Paper pulp is handled to the beating degree of 20～30 ° of SR in beater, stops making beating, dyes, adds the subsequent treatment that additives such as auxiliary agent and color-fixing agent add.
The beneficial effect that the present invention compared with prior art brings is:
1. grass fiber and cotton fiber kind are more, and corresponding also have multiple different fiber characteristics and a physical property, have abundant performance performance through the suitable collocation diaphragm of loudspeaker that can to make with these two kinds of fibers be primary raw material;
2. straw or like vegetable growth cycle, output are big, and a large amount of use can not cause tangible harmful effect to biological environment;
3. the price of grass fiber is relatively low, as the primary raw material of making the diaphragm of loudspeaker, can well control cost, and has good economic benefit.
Description of drawings
Fig. 1 is the horn structure partial sectional view;
Fig. 2 is grass fiber cell wall structure schematic diagram;
Fig. 3 is the loudspeaker curve chart of the diaphragm of loudspeaker of conventional wood fibre manufacturing;
Fig. 4 is the loudspeaker curve chart of embodiment 1 diaphragm of loudspeaker;
Fig. 5 is the loudspeaker curve chart of embodiment 2 diaphragms of loudspeaker;
Fig. 6 is the loudspeaker curve chart of embodiment 3 diaphragms of loudspeaker;
Fig. 7 is the loudspeaker curve chart of embodiment 4 diaphragms of loudspeaker;
Fig. 8 is the loudspeaker curve chart of embodiment 5 diaphragms of loudspeaker;
Fig. 9 is the loudspeaker curve chart of embodiment 6 diaphragms of loudspeaker;
Figure 10 is the loudspeaker curve chart of embodiment 7 diaphragms of loudspeaker;
Figure 11 is the loudspeaker curve chart of embodiment 8 diaphragms of loudspeaker;
Figure 12 is the loudspeaker curve chart of embodiment 9 diaphragms of loudspeaker;
Figure 13 is the loudspeaker curve chart of embodiment 10 diaphragms of loudspeaker;
Figure 14 is the loudspeaker curve chart of embodiment 11 diaphragms of loudspeaker;
Figure 15 is the loudspeaker curve chart of embodiment 12 diaphragms of loudspeaker;
Figure 16 is the loudspeaker curve chart of embodiment 13 diaphragms of loudspeaker;
Figure 17 is the loudspeaker curve chart of embodiment 14 diaphragms of loudspeaker;
Figure 18 is the loudspeaker curve chart of embodiment 15 diaphragms of loudspeaker;
Figure 19 is the manufacturing process flow of the diaphragm of loudspeaker of the present invention.
Embodiment
The invention will be further described below in conjunction with Figure of description.
As shown in Figure 1, the diaphragm of loudspeaker 1 that non-wood is made is made the raw material of described vibrating diaphragm and is made up of grass fiber, cotton fiber, bast fiber.Wherein grass fiber accounts for raw material weight than 15%～40%, and cotton fiber accounts for raw material weight than 20%～45%, and bast fiber accounts for raw material weight than 15%～65%.
Grass fiber is the widest a kind of natural plants of the fastest distribution of occurring in nature breeding, only needs its growth period about half a year to one year, and can recover original appearance again less than some months after harvesting.So use grass fiber not only can not destroy natural environment as the loudspeaker assembly raw material, and raw material supply is abundant, with low cost, be the raw material that a kind of very good diaphragm of loudspeaker 1 uses.Cotton fibre also is a kind of non-wood raw material of high-quality, and the product physical strength of being made by cotton fiber is big, and toughness is strong, and it is careful and tender to organize, and has bigger damping simultaneously, and the characteristics that its soft or hard is taken into account make the diaphragm of loudspeaker 1 have abundanter physical characteristic.In addition, the kind of grass fiber and cotton fiber is more, and corresponding also have multiple different fiber characteristics and a physical property, has abundant performance performance through the suitable collocation diaphragm of loudspeaker 1 that can to make with these two kinds of fibers be primary raw material.Generally speaking, because the intensity of grass fiber is good not as the needle-leaved wood fibre of general usefulness, so when using the diaphragm of loudspeaker of making as primary raw material with grass fiber 1, need other non-wood of collocation to strengthen the physical strength of the diaphragm of loudspeaker 1, make it to reach the required electroacoustic performance of loud speaker.In non-wood, in the bast fiber and stronger toughness and the elasticity of tool, and can reach the effect of learning from other's strong points to offset one's weaknesses after the grass fiber collocation.
As shown in figure 19, non-wood is that the diaphragm of loudspeaker 1 that raw material is made needs special manufacturing process, and the manufacturing process of the diaphragm of loudspeaker 1 of the present invention is followed successively by: fibrous raw material is mixed into pulpboard, pulpboard immersions, hydrabrusher pulping, beater and pulls an oar into opening slurry and disperseing, drag for and starch moulding, the vacuum dehydration of l Water Paper embryo, hot-forming, die-cut, vibrating diaphragm monomer of the adding of wet pulp, additive, wet pulp.
As shown in Figure 2, grass fiber cell membrane used in the present invention is made up of primary wall 2, outer layer of secondary wall 3, central layer of secondary 4 and secondary wall internal layer 5, wherein outer layer of secondary wall 3 is thicker, and microfibre is the intersection helical arrangement, and central layer of secondary 4 microfibres are to be close to the fiber axially-aligned, therefore are difficult to wire-dividing broom purification at pulping process.Generally speaking, the intensity of grass fiber is good not as needle timber, more easily be cut off during making beating, thereby tearability descends after making product, and tensile strength, bursting strength and folding strength all can correspondingly reduce simultaneously.For addressing this problem, soak in the link at pulpboard, pulpboard need soak 6 hours, allowed the straw pulp fiber swollen that fully absorbs water, and made fiber become more soft, and toughness strengthens, and fiber is not easy to be cut off when making beating like this.Then, we have changed the beating process of straw pulp fiber, change the free beating mode (concentration 3～5%) of routine into half shiny beating (concentration 6～8%), cutter spacing also by light cutter, middle cutter, heavy cutter, change discongest, light cutter, middle cutter, heavy cutter, shorten the heavy cutter time simultaneously and increase in the beating time of cutter.The purpose of doing so mainly is to reduce the cut-out of fiber as far as possible, allow fibre swelling, rub, conquassation, fibrillating, increase the intensity of making beating back fiber, thereby improve the physical strength of cone, guarantee that the electroacoustic performance of loud speaker adheres to specification.Paper pulp is handled to the beating degree of 20～30 ° of SR in beater, stops making beating, dyes, adds the subsequent treatment that additives such as auxiliary agent and color-fixing agent add.
The diaphragm of loudspeaker 1 raw material of present embodiment is made up of Spanish grass (Esparto) fiber, cotton fiber, manila hemp fiber, as following table:
Fig. 3 is the loudspeaker curve chart of the diaphragm of loudspeaker 1 of conventional wood fibre manufacturing.1. number line is the frequency response curve of loudspeaker, and 2. number line is the distortion curve of loudspeaker.
Fig. 4 is the loudspeaker curve chart of the diaphragm of loudspeaker 1 of present embodiment.1. number line is the frequency response curve of loudspeaker, and 2. number line is the distortion curve of loudspeaker.
Fig. 4 and Fig. 3 are compared: in low-frequency range, before the 1KHz, the loudspeaker curve of Fig. 3 and Fig. 4 is close, high frequency treatment, and after the 1KHz, the whole sound pressure level height of curve ratio Fig. 3 of Fig. 4.The distortion curve contrast: the distortion highest point of Fig. 4 has only about 6%, and the highest distortion of Fig. 3 reaches 25%.So with the diaphragm of loudspeaker 1 that Spanish grass (Esparto) fiber, cotton fiber, abaca wool fibre are produced, its loudspeaker performance is to reach even to be better than the diaphragm of loudspeaker 1 that conventional wood fibre is made.
The diaphragm of loudspeaker 1 raw material of present embodiment is made up of Spanish grass (Esparto) fiber, cotton fiber, manila hemp fiber, as following table:
Fig. 5 is the loudspeaker curve chart of the diaphragm of loudspeaker 1 of present embodiment.1. number line is the frequency response curve of loudspeaker, and 2. number line is the distortion curve of loudspeaker.Fig. 5 is compared with Fig. 3, the diaphragm of loudspeaker 1 of present embodiment equally as can be seen, its loudspeaker performance is to reach even to be better than the diaphragm of loudspeaker 1 that conventional wood fibre is made.
The diaphragm of loudspeaker 1 raw material of present embodiment is made up of Spanish grass (Esparto) fiber, cotton fiber, manila hemp fiber, as following table:
Fig. 6 is the loudspeaker curve chart of the diaphragm of loudspeaker 1 of present embodiment.1. number line is the frequency response curve of loudspeaker, and 2. number line is the distortion curve of loudspeaker.Fig. 6 is compared with Fig. 3, the diaphragm of loudspeaker 1 of present embodiment equally as can be seen, its loudspeaker performance is to reach even to be better than the diaphragm of loudspeaker 1 that conventional wood fibre is made.
The diaphragm of loudspeaker 1 raw material of present embodiment is made up of Chinese alpine rush fiber, villus fiber, sisal fiber, as following table:
Fig. 7 is the loudspeaker curve chart of the diaphragm of loudspeaker 1 of present embodiment.1. number line is the frequency response curve of loudspeaker, and 2. number line is the distortion curve of loudspeaker.Fig. 7 is compared with Fig. 3, the diaphragm of loudspeaker 1 of present embodiment equally as can be seen, its loudspeaker performance is to reach even to be better than the diaphragm of loudspeaker 1 that conventional wood fibre is made.
The diaphragm of loudspeaker 1 raw material of present embodiment is made up of Chinese alpine rush fiber, villus fiber, sisal fiber, as following table:
Fig. 8 is the loudspeaker curve chart of the diaphragm of loudspeaker 1 of present embodiment.1. number line is the frequency response curve of loudspeaker, and 2. number line is the distortion curve of loudspeaker.Fig. 8 is compared with Fig. 3, the diaphragm of loudspeaker 1 of present embodiment equally as can be seen, its loudspeaker performance is to reach even to be better than the diaphragm of loudspeaker 1 that conventional wood fibre is made.
Embodiment 6
The diaphragm of loudspeaker 1 raw material of present embodiment is made up of Chinese alpine rush fiber, villus fiber, sisal fiber, as following table:
Fig. 9 is the loudspeaker curve chart of the diaphragm of loudspeaker 1 of present embodiment.1. number line is the frequency response curve of loudspeaker, and 2. number line is the distortion curve of loudspeaker.Fig. 9 is compared with Fig. 3, the diaphragm of loudspeaker 1 of present embodiment equally as can be seen, its loudspeaker performance is to reach even to be better than the diaphragm of loudspeaker 1 that conventional wood fibre is made.
Embodiment 7
The diaphragm of loudspeaker 1 raw material of present embodiment is made up of sugarcane fibre, top cotton fiber, bastose, as following table:
Figure 10 is the loudspeaker curve chart of the diaphragm of loudspeaker 1 of present embodiment.1. number line is the frequency response curve of loudspeaker, and 2. number line is the distortion curve of loudspeaker.Figure 10 is compared with Fig. 3, the diaphragm of loudspeaker 1 of present embodiment equally as can be seen, its loudspeaker performance is to reach even to be better than the diaphragm of loudspeaker 1 that conventional wood fibre is made.
The diaphragm of loudspeaker 1 raw material of present embodiment is made up of sugarcane fibre, top cotton fiber, bastose, as following table:
Figure 11 is the loudspeaker curve chart of the diaphragm of loudspeaker 1 of present embodiment.1. number line is the frequency response curve of loudspeaker, and 2. number line is the distortion curve of loudspeaker.Figure 11 is compared with Fig. 3, the diaphragm of loudspeaker 1 of present embodiment equally as can be seen, its loudspeaker performance is to reach even to be better than the diaphragm of loudspeaker 1 that conventional wood fibre is made.
The diaphragm of loudspeaker 1 raw material of present embodiment is made up of sugarcane fibre, top cotton fiber, bastose, as following table:
Figure 12 is the loudspeaker curve chart of the diaphragm of loudspeaker 1 of present embodiment.1. number line is the frequency response curve of loudspeaker, and 2. number line is the distortion curve of loudspeaker.Figure 12 is compared with Fig. 3, the diaphragm of loudspeaker 1 of present embodiment equally as can be seen, its loudspeaker performance is to reach even to be better than the diaphragm of loudspeaker 1 that conventional wood fibre is made.
The diaphragm of loudspeaker 1 raw material of present embodiment is made up of reed fiber, bombax cotton, flax fiber, Sanya bark fiber, as following table:
Figure 13 is the loudspeaker curve chart of the diaphragm of loudspeaker 1 of present embodiment.1. number line is the frequency response curve of loudspeaker, and 2. number line is the distortion curve of loudspeaker.Figure 13 is compared with Fig. 3, the diaphragm of loudspeaker 1 of present embodiment equally as can be seen, its loudspeaker performance is to reach even to be better than the diaphragm of loudspeaker 1 that conventional wood fibre is made.
Embodiment 11
The diaphragm of loudspeaker 1 raw material of present embodiment is made up of reed fiber, bombax cotton, flax fiber, Sanya bark fiber, as following table:
Figure 14 is the loudspeaker curve chart of the diaphragm of loudspeaker 1 of present embodiment.1. number line is the frequency response curve of loudspeaker, and 2. number line is the distortion curve of loudspeaker.Figure 14 is compared with Fig. 3, the diaphragm of loudspeaker 1 of present embodiment equally as can be seen, its loudspeaker performance is to reach even to be better than the diaphragm of loudspeaker 1 that conventional wood fibre is made.
Embodiment 12
The diaphragm of loudspeaker 1 raw material of present embodiment is made up of reed fiber, bombax cotton, flax fiber, Sanya bark fiber, as following table:
Figure 15 is the loudspeaker curve chart of the diaphragm of loudspeaker 1 of present embodiment.1. number line is the frequency response curve of loudspeaker, and 2. number line is the distortion curve of loudspeaker.Figure 15 is compared with Fig. 3, the diaphragm of loudspeaker 1 of present embodiment equally as can be seen, its loudspeaker performance is to reach even to be better than the diaphragm of loudspeaker 1 that conventional wood fibre is made.
Embodiment 13
The diaphragm of loudspeaker 1 raw material of present embodiment is made up of Spanish grass (Esparto) fiber, villus fiber, bastose, Sanya bark fiber, as following table:
Figure 16 is the loudspeaker curve chart of the diaphragm of loudspeaker 1 of present embodiment.1. number line is the frequency response curve of loudspeaker, and 2. number line is the distortion curve of loudspeaker.Figure 16 is compared with Fig. 3, the diaphragm of loudspeaker 1 of present embodiment equally as can be seen, its loudspeaker performance is to reach even to be better than the diaphragm of loudspeaker 1 that conventional wood fibre is made.
The diaphragm of loudspeaker 1 raw material of present embodiment is made up of Spanish grass (Esparto) fiber, villus fiber, bastose, Sanya bark fiber, as following table:
Figure 17 is the loudspeaker curve chart of the diaphragm of loudspeaker 1 of present embodiment.1. number line is the frequency response curve of loudspeaker, and 2. number line is the distortion curve of loudspeaker.Figure 17 is compared with Fig. 3, the diaphragm of loudspeaker 1 of present embodiment equally as can be seen, its loudspeaker performance is to reach even to be better than the diaphragm of loudspeaker 1 that conventional wood fibre is made.
Embodiment 15
The diaphragm of loudspeaker 1 raw material of present embodiment is made up of Spanish grass (Esparto) fiber, villus fiber, bastose, Sanya bark fiber, as following table:
Figure 18 is the loudspeaker curve chart of the diaphragm of loudspeaker 1 of present embodiment.1. number line is the frequency response curve of loudspeaker, and 2. number line is the distortion curve of loudspeaker.Figure 18 is compared with Fig. 3, the diaphragm of loudspeaker 1 of present embodiment equally as can be seen, its loudspeaker performance is to reach even to be better than the diaphragm of loudspeaker 1 that conventional wood fibre is made.
Table 1
| Slurry is planted | Young's modulus (MPa) | Assessment of acoustics (branch) | Remarks |
| Conventional wood pulp | 4395.4 | 8 | Lumber fibre |
| NO.1 | 4518.5 | 9 | Non-wood |
| NO.2 | 4010.1 | 8 | Non-wood |
| NO.3 | 4300.8 | 8.5 | Non-wood |
| NO.4 | 4155.6 | 8 | Non-wood |
| NO.5 | 4369.8 | 7.5 | Non-wood |
| NO.6 | 4492.7 | 8 | Non-wood |
| NO.7 | 4355.1 | 8.5 | Non-wood |
| NO.8 | 4377.4 | 8 | Non-wood |
| NO.9 | 4408.6 | 8.5 | Non-wood |
| NO.10 | 4215.7 | 8 | Non-wood |
| NO.11 | 4603.9 | 7.5 | Non-wood |
| NO.12 | 4106.8 | 8 | Non-wood |
| NO.13 | 4253.4 | 7.5 | Non-wood |
| NO.14 | 4001.8 | 8.5 | Non-wood |
| NO.15 | 3992.3 | 8 | Non-wood |
Table 1 is the contrast of the diaphragm of loudspeaker 1 aspect Young's modulus and tonequality of the above-mentioned 15 kinds of testing programs of the present invention and wood fibre.Through carrying out the many-side test, performance test result by loud speaker confirms, through optimization collocation and the combination of different fibers, and after improving beating process, non-timber loud speaker is all obtaining satisfied effect aspect frequency response curve, harmonic distortion, Young's modulus, the tonequality.Non-timber frequency response curve and timber slurry curve basically identical, no significant difference on curve chart; The two is suitable substantially in harmonic distortion, not significantly not just; The tonequality aspect, the timber loud speaker with have his own strong points, but non-timber loud speaker more has peculiar characteristic.
Claims (5)
1. the diaphragm of loudspeaker made of a non-wood, it is characterized in that: the raw material of making described vibrating diaphragm is made up of grass fiber, cotton fiber, bast fiber;
Described grass fiber accounts for the vibrating diaphragm raw material weight than 15%～40%
Described cotton fiber accounts for the vibrating diaphragm raw material weight than 20%～45%
Described bast fiber accounts for the vibrating diaphragm raw material weight than 15%～65%
Described grass fiber is mainly Chinese alpine rush fiber, sugarcane fibre or reed fiber;
Described cotton fiber is mainly cotton fiber, villus fiber or bombax cotton;
Described bast fiber is mainly sisal fiber, manila hemp fiber, bastose or flax fiber.
2. the manufacturing process of the diaphragm of loudspeaker made of a non-wood as claimed in claim 1, it is characterized in that: the raw material of making described vibrating diaphragm is made up of grass fiber, cotton fiber, bast fiber; The manufacturing technology steps of vibrating diaphragm is followed successively by: fibrous raw material is mixed into pulpboard, pulpboard immersion, hydrabrusher pulping, beater and pulls an oar into opening slurry and disperseing, drag for slurry moulding, the vacuum dehydration of l Water Paper embryo, hot-forming, die-cut, vibrating diaphragm monomer of the adding of wet pulp, additive, wet pulp.
3. the manufacturing process of the diaphragm of loudspeaker made of a kind of non-wood according to claim 2, it is characterized in that: the described beating degree of wet pulp of being pulled an oar into by beater is at 20～30 ° of SR.
4. the manufacturing process of the diaphragm of loudspeaker made of a kind of non-wood according to claim 2, it is characterized in that: described pulpboard soak time is more than 6 hours.
5. the manufacturing process of the diaphragm of loudspeaker made of a kind of non-wood according to claim 2, it is characterized in that: when described beater was pulled an oar into wet pulp, the concentration of paper pulp was 6%～8%.
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| CN107100036B (en) * | 2017-06-21 | 2018-09-25 | 梁胜祥 | Full paper drum paper of a kind of full loosening pressure and preparation method thereof |
| CN111629317A (en) * | 2020-05-06 | 2020-09-04 | 广州笙箫客电子科技有限公司 | Redwood composite vibrating diaphragm and preparation method thereof |
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