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JPH03286697

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DESCRIPTION JPH03286697
[0001]
<Industrial field of application> The present invention is a diaphragm made mainly of paper
fibers such as a cone-shaped speaker, in which adhesion between fibers is strengthened, specific
modulus is enhanced, and water resistance is excellent, high reliability. It relates to a diaphragm.
<Prior Art> Conventionally, a speaker diaphragm of this type is formed by refining a paper pulp
raw material. And its performance is mainly determined by the choice of pulp material and the
shape of the diaphragm. <Problems to be Solved by the Invention> Therefore, the material
properties of conventional diaphragms of this type have a specific elastic modulus of only about
2 × 10 ′ ′ dyne / cm 2. When is the diaphragm? There is a problem that it is considered to be
mechanical vibration and loses the nearness and lacks in durability. Therefore, in order to solve
such conventional problems, the present invention increases the specific elastic modulus (E / ρ
(E: Young's modulus, :: density)), and extends the reproduction extension of the high-pitched
range, as well as durability. It is an object of the present invention to provide a diaphragm having
improved moisture resistance and linearity. <Means for Solving the Problems> The constitution
of the present invention for achieving the above object will be described according to the
embodiments. The present invention 1 is mainly composed of alkoxydisilane as a starting
material, and a solvent and A speaker diaphragm in which silicon dioxide is formed on the
surface of paper fibers by impregnating a solution obtained by mixing and reacting catalysts and
the like with a paper fiber as a substrate, and the present invention 2 is A paper fiber-based
material is impregnated with an emulsion of a solution obtained by mixing a solvent and a
catalyst, etc. with an alkoxysilane as the main component, and mixing this with a solvent and a
catalyst, etc. Is a speaker diaphragm in which silicon dioxide is formed. Furthermore, Invention 3
uses a main component alkoxysilane as a starting material, mixes it with a solvent and a catalyst,
etc., reacts it, and mixes the solution obtained by reaction with a pigment and impregnating the
material having paper fiber as a substrate Let the silicon dioxide form on the surface of the paper
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fiber! It is a speaker diaphragm that has been inserted. Since the present invention has such a
structure, the present invention 1 uses an alkoxysilane as the main component as a starting
material, mixes a solvent with a catalyst, etc., and reacts the resulting solution with It becomes a
diaphragm for a speaker in which silicon dioxide is formed on the surface of the paper fiber by
impregnating the material based on paper # 1 fiber. Invention 2 uses a main component
alkoxysilane as a starting material, mixes a solvent and a catalyst, etc., reacts it, and impregnates
an emulsion of a solution obtained by reaction with an acrylic resin in a paper * JI-based material
Thus, it becomes a speaker diaphragm in which silicon dioxide is formed on the surface of paper
fiber.
Invention 3 uses a main component alkoxysilane as a starting material, mixes a solvent, a
catalyst, etc. with it, reacts it, and impregnates a mixed solution of a solution obtained by reaction
with a pigment into a paper fiber-based material It can be a speaker diaphragm in which silicon
dioxide is formed on the surface of paper fiber. EXAMPLE 2 In the present invention, which will
be described in the following examples of the present invention, a diaphragm made of paper pulp
by beating and making paper pulp is produced using an alkoxysilane as the main ingredient as a
starting material, and a solvent and a catalyst ( Hardeners and the like are mixed and reacted,
and the metal alkoxide solution obtained by reaction is impregnated by spraying or dipping, and
then the solvent is evaporated. Repeat this operation until the desired weight and finish thickness
are achieved, form a metal alkoxide layer between the # 1 fiber surface and the fibers, and treat
at 60 ° C for 5 hours, Is a speaker diaphragm having silicon dioxide formed on its surface. In the
present invention 2, the paper pulp is beaten, made into paper, and the vibrating plate is made
from tetraalkokine silane 1si (OR) 1 mainly composed of alkoxydisilane as a starting material,
and the solvent and touch! (Hardening agent) etc. are mixed and reacted metal alkoxide solution
and acrylic obtained! After impregnating the paper fiber-based material with a 1 m emulsion
solution by soaking or dipping, the solvent is evaporated. Repeat the same two operations until
the desired weight and finish thickness are reached, and process at 60 ° C for 5 hours to form a
silicon dioxide system on the surface of the paper fiber. is there. Invention 3 uses, as a starting
material, tetraalkokinesilane JSi (OR) 1 containing alkoxysilane as a main component, to a
diaphragm manufactured by beating paper pulp and making paper and making it a solvent, a
catalyst (curing agent), etc. Mixed and reacted to obtain 4r genus alffusite 1 solution and a bear?
j! The mixture with the pigment or the organic pigment is sprayed or dipped into a paper # 1
fiber-based material, and then the solvent and the like are evaporated. Repeat this procedure
until the desired weight, finish thickness and color are reached, and process at 60 ° C and 5 閏
to form silicon dioxide on the surface of the paper fiber. It is a diaphragm for. The physical
properties of the above examples are shown for comparison. Although the embodiments
considered to be representative of the present invention have been described above, the present
invention is not necessarily limited to only the structure of these embodiments, and includes the
constituent requirements of the present invention and the object of the present invention. It can
be suitably modified and implemented within the scope of achieving the effects described below.
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<Effects of the Invention> As already apparent from the above description, according to the
present invention, the surface of the fibers of the paper pulp of the diaphragm made of paper
and the fiber gaps are covered with a layer of ceramic 7 and filled. Therefore, the adhesion
between fibers is strengthened, the specific elastic modulus is increased, the water resistance
performance is improved, and the reliability as well as the physical properties of the material are
improved as described above. As a result, it is possible to expect a KM effect in which the
naturalness at the time of large input of the speaker is improved immensely, and the aurally
reproduced sound is eliminated due to the audibility. \
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