close

Вход

Забыли?

вход по аккаунту

?

JPS56166699

код для вставкиСкачать
Patent Translate
Powered by EPO and Google
Notice
This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate,
complete, reliable or fit for specific purposes. Critical decisions, such as commercially relevant or
financial decisions, should not be based on machine-translation output.
DESCRIPTION JPS56166699
Specification 1, Name of the Invention Dumper 1 for Speakers, Loudspeaker for Speaker, in
which a photocurable substance is applied to the edge portion of the speaker diaphragm and
then irradiated with light to cure the organic substance. A dump material characterized in that a
peroxide is added and a curing accelerator which promotes decomposition of the organic
peroxide is applied to the edge portion in advance.
2, the scope of claims
3. Detailed Description of the Invention The present invention relates to a dump material in
which a photocurable material is applied to the edge portion of a diaphragm and irradiated with
light to cure the material. The present invention relates to a dump material which completely
prevents the flow of material and leaching, and is also excellent in dump effect (braking effect). A
speaker used for various audio equipment such as stereo usually has a structure as shown in FIG.
In this speaker, the peripheral edge of the diaphragm 2 is made of a flexible material such as the
movement of the diaphragm 2 with respect to the human power of the voice coil 5, such as the
edge portion 3 made of woven fabric, paper, foam sheet, etc. It is configured. FIG. 2 is a partially
enlarged view of an edge portion 3 of the speaker in FIG. In order to prevent the resonance due
to the vibration of the diaphragm 2 in the above-mentioned edge portion 3 (especially in order to
flatten the valleys in the midrange of the same wave number characteristics of the speaker), the
dump material 11 is used. It is applied to exert the braking effect. In the figure, 1 is a nareme, 4
is a gasket, 6 is a gunper, 7 is a dust cap, 8 is a top play 1 и 9, 9 is a magnet 1?, 10 is a play with
a pole piece 1 иии. As such a dump material, organic solvent type paints such as vinyl acetate resin,
acrylic resin, urethane resin, sen yarn resin, acrylic or nitrile rubber are conventionally used.
However, since the above-mentioned dump material uses an organic solvent, the working
environment is polluted by the volatilization of the organic solvent, and local exhaust is required
12-05-2019
1
to prevent this contamination, and therefore the above-mentioned exhaust storage facility is
required . Furthermore, the above-mentioned dump material requires a long time for drying and
curing, and a weight difference occurs between the uncured state and the completely cured state,
which causes various disadvantages such as difficulty in weight control. A dump material
obtained by applying an ultraviolet curable resin composition to the edge portion of a diaphragm
and irradiating it with ultraviolet light to cure the resin composition is known as a dump material
in which these disadvantages are improved. However, in this dump material, although the surface
of the coated material is cured by the irradiation of ultraviolet rays, the curing is also achieved
completely because the ultraviolet rays are not sufficiently transmitted in the vicinity of the
contact surface with the edge portion. As a result, the resin composition may flow to the inside of
the edge portion and further to the back side, and the effect as a dump material may be
significantly reduced. The object of the present invention is the above-mentioned drawback that
the photocurable material applied to the edge portion can be completely (or uniformly) cured to
prevent the flow and leaching of the material to the inside and further back of the edge portion.
To provide an improved dump material.
According to the present invention for achieving this object, according to the present invention,
after the photocurable substance is applied to the edge portion of the diaphragm, the light
hardenable material is irradiated with light to cure the substance; It is characterized in that a
peroxide is added and, at the edge portion, a curing accelerator which accelerates the
decomposition of the organic peroxide is applied in advance. Hereinafter, the present invention
will be described in detail with reference to the attached drawings. In the dump material of the
speaker shown in FIG. 1 or FIG. 2, the present invention is a curing accelerator which adds the
organic peroxide to the photocurable substance and promotes the decomposition of the organic
peroxide in the edge portion 3 in advance. As described above, it is characterized by applying.
This photocurable material is mainly composed of a monomer such as oligo methacrylate or
methacrylate, to which a soluble polymer or plasticizer is added as necessary to make a uniform
solution, and the solution 100 weight EndPage: 2) It is a substance obtained by adding 05 to 5
parts by weight of a photosensitizer to a portion. Here, as the photosensitizer, for example,
benzoin, benzoin methyl ether, benzoin ethyl ether, penzin isoflobil ether, benzoin butyl ether,
benzoin octyl ether, ?-methylbenzoin, ?-phenylbenzoin, acetophenone, benzophenone and the
like Examples thereof include carbonyl compounds, sulfur compounds such as diphenyl sulfide,
diphenyl disulfide and dithiocarbamate, azo compounds such as abbisisobutyronitrile and
vidrazone, and other metal carbonyls and dyes. In the present invention, an organic peroxide is
added to such a photocurable substance, and the amount of the organic peroxide added to the
photocurable substance is 01 based on 1.00 parts by weight of the photocurable substance. 10
parts by weight. As such an organic peroxide, specifically, for example, benzoyl peroxide, di-tbutylperoxide / phthalate, methyl ethyl ketone peroxide, t-butyl hydroperoxide, cumene
hydroperoxide, etc. are used. The curing accelerator in the present invention accelerates the
curing of the photocurable substance, and comprises a mixture of iron salt and linear
12-05-2019
2
polyamines. The blending ratio of the iron salt to the linear polyamines is 1: 5 to 1: 400 in molar
ratio. If the proportion of linear polyamines is less than 5, adhesion is reduced, and if it is more
than 400, curing time is prolonged, which is unsuitable. Examples of the iron salt include
inorganic or organic iron salts, and specific examples thereof include anhydrous ferric chloride,
ferric nitrate, and iron lactate.
The linear polyamines have a general formula% (wherein R1, R, 2, R3, and 'R4 are each hydrogen
or an alkyl group having 1 to 8 carbon atoms, and n is an integer of 1 to 5). And
ethylenediamine, diethylenetriamine, 1-ethylenetetra-t-lamine, tere-laethylenebenzamine,
pentaethylenehexamine and the like. The aforementioned curing accelerator may also be a
mixture of iron salt and cyclic polyamine. In this case, the molar ratio of the iron salt to the cyclic
polyamines is 1 = 1 to 1: 200. If the ratio of cyclic polyamines is less than 1, adhesion is reduced,
and if it is more than 200, curing time is prolonged, which is unsuitable. Examples of the iron salt
include inorganic or organic iron salts as described above, and specific examples thereof include
anhydrous ferric chloride, ferric nitrate, and iron lactate. Cyclic polyamines are represented by
the general formula (wherein ml and m2 are each an integer of 2 to 8, nl and n2 each are an
integer of 0 to 6, n ++ nz is 3 or more, X is 1 or 2) And specifically, 1,4 ░ 7.10tetraazacyclododecane, 1.5, 9.13-tetraazacyclohexadecane, 1.4.8.1.1-. Tetraazacyclotetradecane,
1.4.7.10.13 j6-hexaazacyclooctadecane, 1. . 4, 8.12-tetraazacyclopentadecane and the like.
Furthermore, as the above-mentioned curing accelerator, a substance that forms a redox system
with an organic peroxide (redox promoter) can also be used. As such a redox promoter, for
example, N-N 'dimethyl aniline, NN' dimethyl toluidine, tertiary amines such as triethylamine,
cotton compounds of aldehyde and amine, metals such as cobalt naphthenate, iron propionate
and the like There are soaps, organic metal complexes, thiourea or derivatives thereof. In
addition, the compounding habit to the photocurable substance of the above-mentioned various
hardening accelerators can be 0.1-5 weight part. Also, it is preferable to use the curing
accelerator as a solution of, for example, 1 to 20 weight percent diluted with a diluent when
used. EndPage: 3 As this diluent, an organic solvent, reactive monomers, reactive oligomers,
plasticizers, etc. may be used alone or in combination of two or more of them, depending on the
desired physical properties. It can be adjusted and used. However, even if a small amount of
polymer substance is dissolved and used in this compounding solution, there is no difference.
Examples of the organic solvent in the diluent include alcohols such as methanol, ethanol,
isopropyl alcohol and butanol, and generally used organic solvents such as acetone, methyl ethyl
ketone, ethyl acetate, toluene and xylene. As reactive monomers, acrylic acid ester monomers
such as methyl methacrylate, 2-hydroxyethyl methacrylate, and 2-hydroxypropyl methacrylate,
and methacrylic acid ester monomers are used. As reactive oligomers, acrylic or methacrylic
oligomers such as polyester polyol acrylate, polyether polyol acrylate, oligo ester acrylate and the
like are used, and as plasticizers, phosphoric acid esters such as tris chlorophosphate and trioctyl
12-05-2019
3
phosphate, dibutyl diglycol Fat and post esters such as adipate, octyl sebacate, and dibutyl
sebacate are used. Further, as the polymer substance, synthetic rubbers such as acrylic
elastomer; natural rubber, SBR, NBR, etc. can be used. Next, in terms of operation steps, the
above-mentioned curing accelerator is first applied to the edge portion, and then a photocurable
substance containing an organic peroxide is coated on -H of the curing accelerator. And
immediately cure by irradiation with light such as ultraviolet light. Under the present
circumstances, when a photocurable substance is apply | coated, the organic peroxide mix |
blended with this substance contacts with a hardening accelerator, decomposes | degenerates
rapidly, and the polymerization (hardening) reaction of the reactive monomer and oligomer in
this substance is carried out. Is promoted simultaneously with the polymerization reaction by
light irradiation. That is, in other words, since the curing proceeds from both the surface (light
irradiated surface) and the bottom surface (the interface with the edge portion), the photocurable
substance is inferior to the case of simple photocuring and is not cured as a dump material. Also,
semi-hardening is completely prevented, and as a result, the flow and leaching of the dump
material to the back of the edge portion are completely prevented. In the present invention, for
example, light from a light source can be used as the light to be irradiated, and specifically, a
mercury lamp, a xenon lamp, a chemical lamp, a metal halide lamp, or the like is used.
Furthermore, in the present invention, the curing accelerator may be changed to the organic
peroxide and applied to the edge portion, and at the same time, the curing agent may be added to
the photocurable substance instead of the organic peroxide. Of course, the hardenability and the
dumping effect of the Hereinafter, the present invention will be described in more detail by way
of examples. Example 1 80 parts of oligoether acrylate (Shin-Nakamura Chemical Co., Ltd .; NK
ester M-9Q), 20 parts of oligoether acrylate (Shin-Nakamura Chemical Co., Ltd .: NK ester 4G),
and acrylic polymer (Dupont QR-667) 30 Part, 10 parts of acrylic rubber ? wood oil seal
(manufactured by Knoxite A-1095) are mixed and stirred to obtain a uniform solution.
Further, 50 parts of tris (chloroethyl) phosphate as a plasticizer, 30 parts of di (2-ethylhexyl)
sebacate, and 2.5 parts of trioctyl phosphate as a plasticizer and 2 parts of benzoin isobutyl ether
as a photosensitizer are added to this homogeneous solution to make uniform Prepare the
solution. The solution has a viscosity of about i 0.000 cps / 25 ░ C. and is cured by irradiation
with a chemical lamp for photolithography for 2 minutes to form a coating. This coated film was
formed on the edge of a speaker, the frequency characteristics before and after application were
measured, and the results are shown in FIG. This measurement was performed as follows. ???
?????????? Prepare a 20 cm diameter speaker. ??????? First, the sound
pressure (dB) with respect to the frequency (Iz) was measured in a state in which the coating film
was not formed at the edge portion, and the result is shown by a broken line in FIG. Next, the
sound pressure (dB) with respect to the frequency (J-1z) is measured in the same manner as
described above at EndPage: 4 (coating amount 347) in which the coating film is formed on the
edge portion, and the results are shown in FIG. It showed by a solid line. As apparent from FIG. 3,
in the state in which the coating is formed on the edge, the sound pressure (dB) is constant in any
12-05-2019
4
frequency region compared to the state in which the coating is not formed. The end resonance is
well damped to provide an excellent braking effect. A dump material was prepared by adding and
dissolving 5 parts of cumene hydroperoxide with respect to 100 parts of the liquid conditioning
light curable material of the dump material. Preparation of curing accelerator A mixture of
anhydrous ferric chloride and triethylenetetramine in a molar ratio of 1: 200 was dissolved in
ethanol to a concentration of 20 parts. Creation speaker of coating film. -Impregnated edge cloth
(material used for the edge part). It is called "edge material" below. Coating films were prepared
by the following two methods. Method 1: Apply only the dump material and cure with a chemical
lamp. Method 2: A curing accelerator is previously applied, ethanol is volatilized, a dump material
is applied, and light is irradiated for 2 minutes with a chemical lamp to form a coating film. About
the formation method of two kinds of coating films below, the adhesion state of the edge material
and the dumping material coating film, and the hardening state of the back surface of the edge
material are observed. As compared with the fact that the uncured material remains on the back
of the edge material and the adhesion between the edge material and the coating film is not
good, the first method does not have the uncured material on the back surface of the edge
material. The adhesion between the edge material and the coating was also very good. Example 2
Preparation of photocurable substance 60 parts of oligoether acrylate (Shin-Nakamura Chemical
Co., Ltd .; NK ester M-9G), 15 parts of methyl methacrylate 2.5L # -hydroxyethyl acrylate, acrylic
polymer (Q-667 manufactured by DuPont 20 parts and 15 parts of acrylic rubber (Nippon Oil
Seal-Koxtite A-1095) are mixed and completely dissolved to obtain a uniform solution.
Further, 30 parts of tris (chloroethyl) phosphate and 70 parts of di (butoxy-ethoxy) adipate as a
plasticizer and 2 parts of benzoylethyl ether as a photosensitizer were added to the
homogeneous solution to obtain a homogeneous solution. Preparation of dump material 5 parts
of cumene hydroperoxide was added to 100 parts of the photocurable substance to form an edge
material. Adjustment of the curing accelerator The following curing accelerator was adjusted. (A)
20% ethanol solution of a mixture of anhydrous ferric chloride and 1.4, 8.11tetraazacyclotetradecane in a molar ratio of 1: 5. (Bl) 20? 2-hydroxyethyl acrylate solution of
the mixture of (a) above. (C1 anhydrous ferric chloride and 1.4.8, 11. 20% ethanol solution of a
mixture of tetraazacyclotetradecane in a molar ratio of 1:10. (D) 20% solution of 2-hydroxyethyl
acrylate in the mixture of (C). (E) 20% ethanol solution of a mixture of 1: 5 molar ratio of
anhydrous ferric chloride and 1.4-, 8.12 tetraazacyclopentadecane. (Fl Add solution of 2hydroxyethyl acrylate in the mixture of (e) above). Preparation of Coating Film The abovementioned hardening promoting agent 1 is applied to a phenol-impregnated cloth for a speaker,
and then a dumping material is applied. Immediately after coating, light is irradiated with a
chemical lamp to form a te coating film. The adhesion of the edge material after coating film
formation, the coating film, and the cured state of the coating film on the back side of the edge
material were observed. In addition, only the dump material is applied as Comparative Example 1
and cured with a chemical lamp, and as Comparative Example 2 a light dump material coated
with a condensate of butyraldehyde and aniline as a curing accelerator is applied and light is
12-05-2019
5
applied. An example is shown. The results are as shown in Table 1. EndPage: 5 Table 1 Thus, it
can be seen that according to the present invention, not only the adhesion of the coating film is
good, but also the coating film on the back surface of the edge material is sufficiently cured.
Example 3 Preparation of photocurable substance 100 parts by weight of Alonix M-5700
(Toagosei ?) as an oligoacrylate and acrylic polymer Knoxtite A containing ethyl acrylate as a
main component as an assembly (manufactured by Nippon Oil Seal ?) 20 Charge the part into a
flask with stirrer and dissolve completely. After completion of dissolution, 1.00 parts of solution
(relative to 60 parts of tris (chloroethyl) phosphate as plasticizer, 45 parts of di (2-ethylhexyl)
sebacate and 40 parts of hydrooctyl phosphate and benzoin isobutyl as photosensitizer /
sensitizer Two parts of ether were added and further stirred to form a homogeneous mixed
solution.
The viscosity of this 1 @ liquid is about 1 ? ? 0.000 cps 725 ░ C., and is rapidly cured by light
irradiation to form a coating film having an excellent dumping effect as an edge material of a
speaker. Preparation of Edge Material An edge material A was prepared by adding 2 parts of
benzoyl peroxide to 1.00 parts of the homogeneous solution. A liquid containing 2 parts of
cumene hydroperoxide is used as dump material B. Formation of Coating Film The dump
materials A and B were linearly coated on p paper using a syringe, irradiated with light with a
chemical lamp for 2 minutes to be cured, and the state of curing was observed. In this case,
paying particular attention to the state of the back of the filter paper, the presence of the
uncured material was observed, and the adhesion between the p paper and the coating film of
the dump material was observed. On the other hand, the surface of the filter paper to which the
dump materials A and B were applied was previously treated with the following treatment
solution, the dump materials A and B were applied, and light was irradiated to observe the cured
state. (A) N-N'-dimethylaniline 10 ethanol 40 (1) N-N'-dimethyl ameline 5 cobalt naphthate 5
ethanol 40 (e) thiourea 10 ethanol 110 (f) ethanol solution of the following compound ( glNDimethylphenyl complete minomethane 10 ethanol 40 (a) ~ (Gl back surface treatment liquid is
applied by a syringe to the portion of p paper to which the photocurable substance is applied,
and then it is dried and then the photocurable substance is applied It irradiated with light with a
chemical lamp, and as a result of observing the hardening state, it was as Table 2 below. Table 2
A comparative example is a case where processing is not performed to filter paper. EndPage: 6
(?) ? surface adhesion less unhardened f-like [7 ? surface adhesion slightly present, uncured
material slightly left. X Surface adhesion is remarkable and non-hard f-gold remains.
4. Brief description of the drawings FIG. 1 is a cross-sectional view of a normal speaker, FIG. 2 is
a partially enlarged cross-sectional view of an edge portion of the diaphragm in FIG. 1, and FIG. It
is a graph which shows the braking effect of. DESCRIPTION OF SYMBOLS 1 flame | frame 2
diaphragm board 3 edge part 4 gasket 5 voice coil 6 gunper 7 dust cap 8 top plate 9 magnet 10
10 Plate with pole piece,] 1 и и и Dump material (23) ? 1 after ? ? EndPage: ?
12-05-2019
6
12-05-2019
7
Документ
Категория
Без категории
Просмотров
0
Размер файла
19 Кб
Теги
jps56166699
1/--страниц
Пожаловаться на содержимое документа