CN101626539B - Manufacture method of high performance paper loudspeaker diaphragm materials - Google Patents
Manufacture method of high performance paper loudspeaker diaphragm materials Download PDFInfo
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- CN101626539B CN101626539B CN200910070033A CN200910070033A CN101626539B CN 101626539 B CN101626539 B CN 101626539B CN 200910070033 A CN200910070033 A CN 200910070033A CN 200910070033 A CN200910070033 A CN 200910070033A CN 101626539 B CN101626539 B CN 101626539B
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Abstract
The invention relates to a manufacture method of high performance paper loudspeaker diaphragm materials, comprising the following steps: 1. pulping paper pulp; 2. pouring the processed paper pulp into a pulp tank, and adding cationic polyelectrolytes with weight being within 0.1-10%, concentration of paper pulp being within 0.1-8%, temperature being 10-50 DEG C, and reaction time being 1-5min; 3.adding anionic polyelectrolytes with weight being within 0.1-10%, and reaction time being 1-5min; 4. alternatively repeating step 2 and step 3, with processing times being the absorption layer numberof polyelectrolytes on fiber surface of the paper pulp; and 5. carrying out next step of diaphragm forming processing. The invention has the beneficial effects that the paper loudspeaker diaphragm material produced by adopting the new method, test by paper loudspeaker diaphragm material dynamic complex modulus and damp tester, can realize the aim of elastic modulus and damping of the cone, thus meeting the requirements of the product such as miniaturization, large power and high quality.
Description
Technical field
The present invention relates to the manufacturing approach of loudspeaker diaphragm materials, relate in particular to a kind of manufacturing approach of high performance paper loudspeaker diaphragm materials.
Background technology
Loud speaker is can the signal of telecommunication is transformed into acoustical signal and can be radiated the electroacoustic transducer that goes in the air, and it is widely used at aspects such as communication, broadcasting, education and daily lifes.The vibrating diaphragm of loud speaker is one of most important parts that constitute by loud speaker, and its effect is a radiate sound, and the material of vibrating diaphragm has fundamental influence to radiation characteristic, tonequality, tone, the tone color of loud speaker.A kind of application of new material tends to change the looks of loud speaker.Basic demand to loudspeaker diaphragm materials is: 1. the density of diaphragm materials is low as far as possible, guarantees that loud speaker has higher sensitivity; 2. the ratio spring rate (E/ ρ) of material is high as much as possible; (wherein E is the modulus of elasticity of material, and ρ is a density of material) in other words requires diaphragm materials promptly to want gently have higher physical strength again; Can make vibrating diaphragm in wider frequency, do the piston motion like this; Can effectively suppress to cut apart vibration, reduce the unevenness of frequency response, reduce distortion.3. require diaphragm materials that suitably big internal loss (being that damping factor is wanted greatly) will be arranged, can make frequency response curve smoother, reduce the Q value and also improve tonequality.
At present; The vibrating diaphragm kind is a lot, comprises papery diaphragm materials, metal diaphragm materials (like beryllium, almag, titanium etc.), macromolecule diaphragm materials (like polypropylene, polyethylene, liquid crystal polymer etc.), inorganic non-metallic diaphragm materials (like pottery, boron carbide, diamond etc.), composite diaphragm material or the like.The papery diaphragm materials; Claim cone again; Because advantages such as it is cheap, easy-formation, density is low, tone color is natural, design freedom is big; In numerous vibrating diaphragms, still occupy an leading position, other diaphragm materials makes it to use owing to price height, difficult forming or processing technology are complicated has certain limitation.The process for making of traditionally on paper loudspeaker diaphragm materials generally is: earlier paper pulp is pulled an oar, carry out applying glue and dyeing then, last molded drying.Paper pulp is the primary raw material of making paper loudspeaker diaphragm; The ratio spring rate of the cone that traditional method is produced has been increased to the limit; Damping coefficient generally has only about 0.04; Can not satisfy the miniaturization of product, high-power, high-quality requirement, therefore will the production of traditionally on paper loudspeaker diaphragm materials be improved.
Summary of the invention
The objective of the invention is modulus of elasticity and damping, a kind of manufacturing approach of paper loudspeaker diaphragm materials is provided especially in order to improve cone.This method is a kind of new method of making the papery diaphragm materials, through in cone moulding forward direction paper pulp, adding chemical assistant, in the hope of solving the technical problem that cone modulus of elasticity and internal damping can not improve simultaneously.
The present invention for realizing the technical scheme that above-mentioned purpose is taked is: a kind of manufacturing approach of paper loudspeaker diaphragm materials, and this method may further comprise the steps:
(1), with the paper pulp processing of pulling an oar;
(2), the paper pulp after will handling is poured stock tank into; Temperature is controlled at 10-50 ℃; Earlier pulp density is adjusted in the 0.1-8% scope, stirs then, under stirring condition, add cationic polyelectrolyte; The weight that adds cationic polyelectrolyte is controlled at cationic polyelectrolyte and paper pulp reaction time 1-5 minute in the 0.1-10% scope;
(3), the paper pulp after step (2) processing is stirred; Under stirring condition, add the anionic polymerization electrolyte; Add the electrolytical weight of anionic polymerization in the 0.1-10% scope, anionic polymerization electrolyte and paper pulp reaction time were controlled at 1-5 minute;
(4), alternately repeating step (2) is handled paper pulp with step (3), number of processes promptly is that the pulp fiber surface polyeletrolyte adsorbs the number of plies;
(5), after treatment paper pulp carries out next step papery vibrating diaphragm processing and forming again.
The beneficial effect that the present invention produced is: the paper loudspeaker diaphragm materials that adopts new method to produce; Detect through loudspeaker diaphragm materials dynamic complex modulus and damping test appearance; Realized to improve the modulus of elasticity of cone and the purpose of damping, thereby satisfied the miniaturization of product, high-power, high-quality requirement.
Description of drawings
Fig. 1 is that polyeletrolyte is handled the influence curve figure of the number of plies to the papery diaphragm materials dynamic modulus of elasticity.
Fig. 2 is that polyeletrolyte is handled the influence curve figure of the number of plies to papery diaphragm materials fissipation factor.
Embodiment
The present invention uses two types of chemical assistants, and one type is cationic polyelectrolyte, and another kind of is the anionic polymerization electrolyte.Spendable cationic polyelectrolyte comprises polyamide polymeric amine epichlorohydrin (PAE), PAH (PAH), PAMC (CPAM), polyvinylamine (PVAm), polyamine (PA), polydiene propyl-dimethyl amine hydrochlorate (PDADMA), polymine (PEI), cationic starch etc.; Spendable anionic polymerization electrolyte comprises polyacrylic acid and salt (PAA), PAMA (APAM), sodium carboxymethylcellulose (CMC), alginic acid and salt thereof, anionic starch, is interpenetrating network copolymer (PU-IPN) of main body etc. with polyurethane.
Concrete steps of the present invention are following:
(1), with paper pulp processing such as pull an oar, used paper pulp comprises the paper pulp that various raw materials and the whole bag of tricks obtain, like bleaching or do not float needlebush chemical pulp, bleaching or do not float cotton pulp, bleaching or do not float jute pulp etc.
(2), the paper pulp after will handling is poured stock tank into; Temperature is controlled at 10-50 ℃, earlier pulp density is adjusted in the 0.1-8% scope, stirs then; And under the condition of agitation as appropriate, add the cationic polyelectrolyte of being selected for use; The weight that adds cationic polyelectrolyte is decided according to used kind, and generally in the 0.1-10% scope (with respect to absolute dried paper pulp) is controlled at cationic polyelectrolyte and paper pulp reaction time 1-5 minute.
(3), the paper pulp after step (2) processing is stirred; And under the condition of agitation as appropriate, add the anionic polymerization electrolyte of being selected for use; Adding the electrolytical weight of anionic polymerization decides according to used kind; Generally in the 0.1-10% scope (with respect to absolute dried paper pulp) is controlled at anionic polymerization electrolyte and paper pulp reaction time 1-5 minute.
(4), alternately repeating step (2) is handled paper pulp with step (3), number of processes promptly is that the pulp fiber surface polyeletrolyte adsorbs the number of plies; Be ground floor after promptly using the cationic polyelectrolyte pulp treatment; Be the second layer after using anionic polymerization electrolyte treatment paper pulp again; Repeating to use after the cationic polyelectrolyte pulp treatment is the 3rd layer; Using behind the anionic polymerization electrolyte treatment paper pulp is the 4th layer again, by that analogy, and alternately reprocessing.
(5), paper pulp after treatment carries out next step papery vibrating diaphragm processing and forming (applying glue, dyeing, molded, drying) again, its forming shape can be flat board or taper.
Through embodiment and accompanying drawing the present invention is described further below.
Embodiment 1:
Use polyamide polymeric amine epichlorohydrin (PAE) as cationic polyelectrolyte, with polyurethane as the interpenetrating network copolymer (PU-IPN) of main body as the anionic polymerization electrolyte, alternate treatment needlebush chemical pulp.Temperature control is generally room temperature; Earlier pulp density is adjusted into 2% (water adjustment); Stir then; And under the condition of agitation as appropriate, add the polyamide polymeric amine epichlorohydrin of being selected for use (PAE), when the weight of the needlebush chemical pulp before the making beating was 100 grams (absolute dried paper pulp), the weight of using polyamide polymeric amine epichlorohydrin (PAE) was 1 gram; Adding what selected for use again is the interpenetrating network copolymer (PU-IPN) of main body with polyurethane, and using with polyurethane is 2 to restrain as the weight of the interpenetrating network copolymer (PU-IPN) of main body.It is as depicted in figs. 1 and 2 to the influence of papery diaphragm materials dynamic mechanical that it handles the number of plies, and handle the number of plies to the almost not influence of papery diaphragm materials density.
Embodiment 2:
Use polyamine (PA) as the anionic polymerization electrolyte, is handled the needlebush chemical pulp with polyamine (PA) as cationic polyelectrolyte, sodium carboxymethylcellulose (CMC) earlier, uses sodium carboxymethylcellulose (CMC) to handle twice totally once more then.Temperature control is generally room temperature, earlier pulp density is adjusted into 2% (water adjustment), stirs then; And under the condition of agitation as appropriate, add the polyamine of being selected for use (PA); Add the sodium carboxymethylcellulose of being selected for use (CMC) then, the weight of the needlebush chemical pulp before making beating is 100 grams (absolute dried paper pulp), and the weight of using polyamine (PA) is 0.6 gram; When the weight of sodium carboxymethylcellulose (CMC) is 0.8 gram; The dynamic modulus of elasticity of papery diaphragm materials has not more improved 89% during adding assistant, and density does not almost change, but fissipation factor has reduced by 11%.
Use amount for two kinds of polyeletrolytes does not have too strict requirement, and just use amount is low excessively, and its performance improves not obvious; If use amount is too high; Can increase manufacturing cost, therefore, two kinds of polyeletrolyte optimum weight (with respect to absolute dried paper pulp) in the 0.4-4% scope of interpolation.
With reference to Fig. 1,2; Through alternately adding two kinds of chemical assistants; Increase along with number of processes; The papery diaphragm materials dynamic modulus of elasticity be changed to the waveform downward trend, wherein the dynamic modulus of elasticity of ground floor is maximum, the dynamic modulus of elasticity numerical value of other even level will be lower than the dynamic modulus of elasticity numerical value of adjacent odd-level; And along with the increase of number of processes, the variation of papery diaphragm materials fissipation factor then is the waveform ascendant trend, and wherein the fissipation factor of ground floor is minimum, and the fissipation factor numerical value of other even level will be higher than the fissipation factor numerical value of adjacent odd-level.
Draw through above-mentioned analysis: in the paper loudspeaker diaphragm materials manufacture process, the performance requirement key that satisfy diaphragm materials is the number of plies, and number of plies key is two kinds of polyeletrolytes alternately repeating to add.Through alternately adding cationic polyelectrolyte and anionic polymerization electrolyte, wrap up in the needed high molecular polymer of bag one deck at pulp fiber surface, thereby realized the modification of paper pulp fiber, and then change the performance of the diaphragm of loudspeaker.
Claims (1)
1. the manufacturing approach of a paper loudspeaker diaphragm materials, this method may further comprise the steps:
(1), with the paper pulp processing of pulling an oar;
(2), the paper pulp after will handling is poured stock tank into; Temperature is controlled at 10-50 ℃; Earlier pulp density is adjusted in the 0.1-8% scope, stirs then, under stirring condition, add cationic polyelectrolyte; The weight that adds cationic polyelectrolyte is controlled at cationic polyelectrolyte and paper pulp reaction time 1-5 minute in the 0.1-10% scope;
(3), the paper pulp after step (2) processing is stirred; Under stirring condition, add the anionic polymerization electrolyte; Add the electrolytical weight of anionic polymerization in the 0.1-10% scope, anionic polymerization electrolyte and paper pulp reaction time were controlled at 1-5 minute;
(4), alternately repeating step (2) is handled paper pulp with step (3), number of processes promptly is that the pulp fiber surface polyeletrolyte adsorbs the number of plies;
(5), after treatment paper pulp carries out next step papery vibrating diaphragm processing and forming again.
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910070033A CN101626539B (en) | 2009-08-04 | 2009-08-04 | Manufacture method of high performance paper loudspeaker diaphragm materials |
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| CN200910070033A CN101626539B (en) | 2009-08-04 | 2009-08-04 | Manufacture method of high performance paper loudspeaker diaphragm materials |
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| CN101626539A CN101626539A (en) | 2010-01-13 |
| CN101626539B true CN101626539B (en) | 2012-09-05 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102271296B (en) * | 2011-07-14 | 2014-05-07 | 昆山上艺电子有限公司 | Loudspeaker screen of composite name plate and production method thereof |
| CN108574924B (en) * | 2018-05-03 | 2021-04-20 | 深圳市摩码克来沃化学科技有限公司 | Composite vibrating diaphragm, preparation method of composite vibrating diaphragm and acoustic generator with composite vibrating diaphragm |
| CN110636418B (en) * | 2019-10-09 | 2021-03-09 | 国光电器股份有限公司 | Loudspeaker cone and preparation method and application thereof |
| CN110891237A (en) * | 2019-12-02 | 2020-03-17 | 安徽井利电子有限公司 | Loudspeaker detection method and loudspeaker detection equipment |
| 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 |
| CN111996829B (en) * | 2020-09-08 | 2022-10-04 | 国光电器股份有限公司 | Paper cone containing bulletproof fiber pulp for loudspeaker and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2373476A (en) * | 2001-01-29 | 2002-09-25 | Goodmans Loudspeakers Ltd | Loudspeaker diaphragm and method of manufacture thereof |
| CN1826020A (en) * | 2005-02-24 | 2006-08-30 | 日本先锋公司 | Vibration board for speaker and manufacture method of the same |
| CN101137791A (en) * | 2004-12-22 | 2008-03-05 | 阿克佐诺贝尔公司 | A process for the production of paper |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2373476A (en) * | 2001-01-29 | 2002-09-25 | Goodmans Loudspeakers Ltd | Loudspeaker diaphragm and method of manufacture thereof |
| CN101137791A (en) * | 2004-12-22 | 2008-03-05 | 阿克佐诺贝尔公司 | A process for the production of paper |
| CN1826020A (en) * | 2005-02-24 | 2006-08-30 | 日本先锋公司 | Vibration board for speaker and manufacture method of the same |
Non-Patent Citations (2)
| Title |
|---|
| JP特开平4-368098A 1992.12.21 |
| JP特开平6-311594A 1994.11.04 |
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