CN116055971A - Hearing aid and preparation method and application method thereof - Google Patents

Hearing aid and preparation method and application method thereof Download PDF

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Publication number
CN116055971A
CN116055971A CN202111260283.XA CN202111260283A CN116055971A CN 116055971 A CN116055971 A CN 116055971A CN 202111260283 A CN202111260283 A CN 202111260283A CN 116055971 A CN116055971 A CN 116055971A
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copolyester
hearing aid
guide tube
sound guide
ear mold
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Chinese (zh)
Inventor
郑萃
侯瑞祥
祝桂香
韩翎
张伟
张龙贵
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Sinopec Beijing Research Institute of Chemical Industry
China Petroleum and Chemical Corp
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Sinopec Beijing Research Institute of Chemical Industry
China Petroleum and Chemical Corp
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Priority to CN202111260283.XA priority Critical patent/CN116055971A/en
Publication of CN116055971A publication Critical patent/CN116055971A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
    • H04R25/65—Housing parts, e.g. shells, tips or moulds, or their manufacture
    • H04R25/652—Ear tips; Ear moulds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
    • C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
    • H04R25/65—Housing parts, e.g. shells, tips or moulds, or their manufacture
    • H04R25/658—Manufacture of housing parts

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Neurosurgery (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Polyesters Or Polycarbonates (AREA)

Abstract

The invention relates to a hearing aid, a preparation method and a use method thereof, wherein the hearing aid comprises a hearing aid component, an ear mold, a small hole and a sound guide tube, wherein the hearing aid component and the sound guide tube are embedded in the ear mold, and the hearing aid component is positioned at one side of the ear mold close to an inner auditory canal; the sound guide tube is positioned at the horizontal central line position inside the ear mold, one end of the sound guide tube is connected with the hearing aid component, the other end of the sound guide tube is communicated with the external environment through a small hole on the ear mold, and the small hole is positioned at the central position of one surface of the ear mold facing the outside of the ear. The hearing aid can be shaped according to the shape of the auditory canal of a user on site, and the patient can shape himself again when the later period is improper, and the plastic mode is simple, convenient and easy to operate.

Description

Hearing aid and preparation method and application method thereof
Technical Field
The invention relates to the field of molding materials, in particular to a hearing aid, a preparation method and a use method thereof.
Background
A hearing aid is a device for use by a hearing impaired person. The general principle of hearing aids is to collect and amplify the ambient sound before it is transmitted into the user's ear. Wherein the incoming portion is held in place by means of an earplug which is placed in the ear of the user for a long time. Regardless of how the function of the hearing aid is designed and optimized, the comfort of its earplug is of paramount importance. Very slight discomfort to the earplug can be felt by the user due to the long time of use of the hearing aid. In addition, improper earplug size can easily cause the hearing aid to emit a pi-like leak sound (howling phenomenon).
Because the ear canal shape of each individual person is different, the best approach is to customize the earplug of the hearing aid according to the ear canal shape of the user. Custom-made earplugs are a significant part of the current products of large hearing aid companies on the market. In particular, for aesthetic and concealed hearing aids (both canal and deep canal) only custom earplug types can be used because of the need to be deep in the canal.
To manufacture a custom earplug, three steps are typically taken. The first step is to insert the curable soft material into the auditory canal of the user, and take out the curable soft material after curing to obtain an auditory impression; the second step is to manufacture an ear mold from a curable material in accordance with an ear print molding; and thirdly, injecting the material to be used as the earplug into an ear mold, and waiting for forming to obtain the earplug shape with the required shape. The materials currently used are of the following four classes: (1) hard molding: easy processing, pain and swelling feeling, such as polymethacrylic acid, polyethylene and the like, and hard silica gel; (2) soft plastic: easy processing and easy deterioration, such as some silicone rubber; (3) organic matter: easy processing and easy deterioration, such as agar, etc.; (4) silica gel: soft, not sensitized, but not easy to make. The most widely used types of silicone rubber are custom-made earplugs for the actual hearing aid products on the market today, most of which are hard, and few of which are soft silica gel products.
Current custom earplugs have two disadvantages. The first disadvantage is that the process of making the mold twice is complicated, and usually requires the user to send the mold back to the manufacturer for manufacturing after personally making the ear mold, which requires several working days to more than ten working days, and thus the material cost, labor cost and time cost are all relatively high. A second disadvantage is that once the earplug shape has been set it cannot be changed again, in fact the shape of the ear canal of the user changes slightly with the change of the physical state, in particular for the elderly, and the shape of the ear canal changes more significantly for one to three years. At this point, the original earplug will again cause discomfort when no longer matched, which loses the meaning of customizing the earplug.
Thus, a hearing aid that can be shaped in situ to the shape of the user's ear canal and that can be reshaped by the patient himself at a later time when it is inappropriate is very suitable for use by hearing impaired persons.
Disclosure of Invention
In view of the above-mentioned problems of the prior art hearing aids, it is an object of the present invention to provide a hearing aid which can be shaped in situ according to the shape of the auditory canal of the user, and which can be shaped again by the patient himself at a later time when it is not appropriate, and which is simple and easy to handle in a plastic manner.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
a hearing aid comprises a hearing aid component, an ear mold, a small hole and an acoustic pipe.
Preferably, the hearing aid component and the sound guide tube are embedded in the ear mold, wherein the hearing aid component is positioned on one side of the ear mold close to the inner auditory canal; the sound guide tube is positioned at the horizontal central line position inside the ear mold, one end of the sound guide tube is connected with the hearing aid component, the other end of the sound guide tube is communicated with the external environment through a small hole on the ear mold, and the small hole is positioned at the central position of one surface of the ear mold facing the outside of the ear.
In the technical scheme, the aperture of the small hole is consistent with the outer diameter of the sound guide tube, and the aperture range is 0.5-3mm, preferably 0.7-2.5mm.
In the above technical scheme, the hearing aid component and the sound guide tube are adhered and fixed in the ear mold by using an adhesive, and the adhesive is at least one selected from nylon, silica gel and polypropylene.
In the above technical solution, the sound guide tube is made of a hard material, and the flexural modulus of the hard material is greater than 1GPa, preferably greater than 3GPa; further preferred is any one of copper, stainless steel, nylon 6 and polypropylene.
In the technical scheme, the thickness of the wall of the sound guide tube is not less than 0.5mm, and is preferably 0.7-1 mm.
In the technical scheme, the ear mold is prepared from a copolyester material, wherein the copolyester material comprises copolyester X and copolyester Y; wherein the copolyester X comprises aliphatic diacid and/or derivative segments thereof, aromatic diacid and/or derivative segments thereof and glycol segments; the diol segment comprises at least one diol segment with a cyclic structure segment and at least one aliphatic diol segment; wherein the aromatic diacid and/or the derivative chain segments thereof account for 15-60 percent of the total diacid and/or the derivative chain segments thereof in mole percent;
wherein the copolyester Y comprises aliphatic diacid and/or derivative segments thereof, aromatic diacid and/or derivative segments thereof, and at least one aliphatic diol segment; wherein the aromatic diacid and/or derivative chain segments thereof account for 50-95 percent of the total diacid and/or derivative chain segments in mole percent. The aromatic diacid content of the copolyester X and the aromatic diacid content of the copolyester Y of the invention are in the above range, and the rigidity of the copolyester can be improved to different degrees.
In the technical scheme, based on 100 parts of total weight of the copolyester, 50-99 parts of the copolyester X, preferably 55-80 parts of the copolyester X; the content of the copolyester X is in the range, so that the temperature required by triggering and softening of the material can be reduced to different degrees, and the hardness and wear resistance of the material are improved;
The content of the copolyester Y is 1-50 parts, preferably 20-45 parts, and the copolyester Y can reduce the time required for curing the copolyester composition material to different degrees within the range.
In the above technical scheme, the aromatic diacid and/or its derivative chain segment in the copolyester X accounts for 25-60% of the total diacid and/or its derivative chain segment in mole percent, and more preferably 30-60%.
Preferably, the diol chain segment with a cyclic structure in the copolyester X accounts for 1-60% of the total diol chain segment by mole, and preferably 5-25%. The introduction of diol with a cyclic structure can increase the rigidity of the copolyester, reduce the temperature required by material triggering softening, and increase the hardness and wear resistance of the material.
Preferably, the mole ratio of the total diacid segments and the total diol segments in the copolyester X is (0.8-1): 1, preferably (0.9 to 1): 1.
preferably, the aromatic diacid and/or derivative chain segments thereof in the copolyester Y account for 60-85 percent of the total diacid and/or derivative chain segments in mole percent.
Preferably, the mole ratio of the total diacid segments and the total diol segments in the copolyester Y is (0.8-1): 1, preferably (0.9 to 1): 1.
in the above technical solution, the copolyester X and the copolyester Y are each independently at least one of a random copolymer, an alternating copolymer, a block copolymer and a graft copolymer, preferably a random copolymer and/or a block copolymer.
In the above technical scheme, the molecular weight of the copolyester X and the copolyester Y ranges from 20000 to 200000, preferably from 80000 to 150000.
In the above technical solution, the aliphatic diacid and/or its derivative is at least one selected from 1, 4-succinic acid and/or its derivative, 1, 6-adipic acid and/or its derivative.
The aromatic diacid and/or its derivative is selected from terephthalic acid and/or its derivative.
The diol with the cyclic structure is at least one selected from 1, 4-cyclohexanedimethanol, isosorbide and 2, 4-tetramethyl 1, 3-cyclobutanediol.
The aliphatic diol is at least one selected from 1, 3-propanediol/1, 4-butanediol or 1, 6-hexanediol.
Wherein, the introduction of the diol with a cyclic structure in the separate copolyester X can reduce the thickness of the copolyester platelet, thereby reducing the melting point of the copolyester, and therefore, the softening temperature of the copolyester material. Further reduces the production time and cost of the copolyester material and increases the convenience of the copolyester material in use. On the other hand, the introduction of the diol of cyclic structure can reduce the crystallization speed of the copolyester, resulting in an increase in the curing time of the copolyester material.
The copolyester Y alone has shorter curing time than the copolyester X alone, but has higher softening temperature and poorer hardness and wear resistance. Therefore, the composition of the copolyester X and the copolyester Y is adopted to make up the defects of the independent copolyester X or Y, and the proper softening temperature, hardness, wear resistance and curing time of the composition copolyester are obtained by adjusting the proportion of the two.
In the technical scheme, the aliphatic diol chain segment in the copolyester X is different from the aliphatic diol chain segment in the copolyester Y; preferably, the method comprises the steps of,
the aliphatic diol chain segment in the copolyester X is from 1, 4-butanediol; the aliphatic diol chain segments in the copolyester Y are from 1, 3-propanediol and/or 1, 6-hexanediol.
In the technical scheme, the novel polyester further comprises 0.5-10 parts, preferably 1.5-8 parts, of essence based on 100 parts of the total weight of the copolyester X and the copolyester Y.
The essence is at least one selected from fruit essence and flower essence; the fruit essence comprises, but is not limited to, strawberry, banana, sweet orange, pineapple, grape and other types of flavors; the floral essence comprises, but is not limited to, rose, jasmine, tuberose, mugwort, magnolia and other types of fragrances.
In the technical scheme, the novel polyester composite material also comprises 1-15 parts of lubricant based on 100 parts of the total weight of the copolyester X and the copolyester Y, wherein the lubricant is at least one selected from stearic acid, butyl stearate, oleamide, ethylene bis stearamide and low-density polyethylene.
The preparation method of the copolyester material comprises the step of mixing and then melt blending components comprising the copolyester X and the copolyester Y.
In the technical scheme, the mixing is performed under the stirring condition, and the stirring speed is 20-150r/min.
In the technical scheme, the stirring time is 5-15min.
In the technical scheme, the melt blending is carried out in a mode of extrusion granulation through a double-screw extruder; preferably, the temperature of the extrusion granulation is 110 to 260 ℃, more preferably 160 to 220 ℃.
The second purpose of the invention is to provide a preparation method of the hearing aid, and the material obtained by the preparation method is convenient to use, degradable, aromatic in smell and good in user experience.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
a preparation method of a hearing aid comprises the steps of sequentially extruding and molding a copolyester material to obtain an ear mold material; preferably, the extrusion is preferably melt extrusion.
In the technical scheme, the extrusion temperature is 90-230 ℃, preferably 110-170 ℃; the molding is preferably injection molding and/or compression molding.
The third object of the present invention is to provide a method for using the hearing aid, which comprises heating the ear mold to soften it sufficiently, then rapidly cooling it to a temperature acceptable for human body, wiping it clean, placing it in the auditory canal, adjusting the shape of the ear mold according to the morphological characteristics of the auditory canal of the patient, and curing the ear mold after the adjustment.
Preferably, the ear mold portion of the hearing aid is heated sufficiently to 120-130 ℃, held for about 10 seconds, and then cooled rapidly to room temperature. At this time, the ear mold part of the hearing aid is closely attached to the external auditory canal of the user, and the material is shaped by slightly applying force. And (5) waiting for about 5 minutes, taking out the ear mold and placing for about 24 hours after the ear mold is simply cured, and completing the shaping process after the ear mold is completely cured.
The heating method can be performed by special equipment, hot air is recommended to be used for heating, and hot oil, hot sand or microwaves can be used for heating.
The cooling method is recommended to use ice water for cooling, and can also use normal-temperature cold water, ice cubes or a cold metal net for cooling. The faster the cooling time, the better its shaping will be. When in use, care needs to be taken to avoid scalding.
The invention has the beneficial effects that:
1. the preparation and use processes are simple and convenient, and the cost is low;
2. the transparency is improved, and the appearance is attractive;
3. the shape of the ear canal can be changed according to the shape change of the ear canal of a patient, and the ear canal has aromatic smell and good user experience;
4. is degradable and is beneficial to environmental protection.
Drawings
Fig. 1 is a cross-sectional view of a hearing aid according to the present invention.
Reference numerals: 1. ear mould, 2, aperture, 3, sound guide tube, 4 hearing aid components and parts. The illustrated hearing aid comprises a hearing aid component, an ear mold, a small hole and a sound guide tube, wherein the hearing aid component and the sound guide tube are embedded in the ear mold, and the hearing aid component is positioned at one side of the ear mold close to the inner auditory canal; the sound guide tube is positioned at the horizontal central line position inside the ear mold, one end of the sound guide tube is connected with the hearing aid component, the other end of the sound guide tube is communicated with the external environment through a small hole on the ear mold, and the small hole is positioned at the central position of one surface of the ear mold facing the outside of the ear.
Detailed Description
The present invention is described in detail below with reference to specific embodiments, and it should be noted that the following embodiments are only for further description of the present invention and should not be construed as limiting the scope of the present invention, and some insubstantial modifications and adjustments of the present invention by those skilled in the art from the present disclosure are still within the scope of the present invention.
In addition, the specific features described in the following embodiments may be combined in any suitable manner without contradiction. The various possible combinations of the invention are not described in detail in order to avoid unnecessary repetition.
In addition, any combination of the various embodiments of the present invention can be made, so long as the concept of the present invention is not deviated, and the technical solution formed thereby is a part of the original disclosure of the present specification, and also falls within the protection scope of the present invention.
Reagent source: the reagents used in the present invention are all commercially available.
In the following examples and comparative examples, the weight average molecular weight of the polymer was measured on a Waters-208 (with Waters 2410RI detector, 1.5mL/min flow rate, 30 ℃) instrument using Gel Permeation Chromatography (GPC) with Tetrahydrofuran (THF) as solvent, calibrated with styrene standards.
The composition of the polyester composition is determined by the feed of the raw materials; the types of the reaction raw materials can be correspondingly adjusted according to the composition and the molecular weight of the target product, and the molecular weight of the product and the content of each repeating unit in the product are respectively controlled by adjusting the feeding amount and the feeding ratio.
Example 1
The hearing aid comprises a hearing aid component, an ear mold, a small hole and a sound guide tube, wherein the hearing aid component and the sound guide tube are embedded in the ear mold, and the hearing aid component is positioned on one side of the ear mold close to an inner auditory canal; the sound guide tube is positioned at the horizontal central line position inside the ear mold, one end of the sound guide tube is connected with the hearing aid component, the other end of the sound guide tube is communicated with the external environment through a small hole on the ear mold, and the small hole is positioned at the central position of one surface of the ear mold facing the outside of the ear. The diameter of the small hole is consistent with the outer diameter of the sound guide tube, and the size of the small hole is 2mm; the hearing aid components and the sound guide tube are fixed in the ear mold by using an adhesive, and the adhesive is selected from silica gel; the sound guide tube and the hearing aid component are commercially available products, copper materials are selected as the sound guide tube, and the wall thickness of the sound guide tube is 0.8mm.
Preparation and use of hearing aids: 7kg of terephthalic acid-butanediol-succinic acid-1, 4-cyclohexanedimethanol copolyester X (weight average molecular weight: 120,000, wherein the content of terephthalic acid repeating units was 60 mol% based on the total number of moles of terephthalic acid and succinic acid repeating units, and the content of 1, 4-cyclohexanedimethanol repeating units was 25 mol% based on the total number of moles of butanediol and 1, 4-cyclohexanedimethanol repeating units) was mixed with particles, 2.5kg of terephthalic acid-propanediol-succinic acid copolyester Y (weight average molecular weight: 100,000, wherein the content of terephthalic acid repeating units was 60 mol% based on the total number of moles of terephthalic acid and succinic acid repeating units), 0.2kg of jasmine essence and 0.3kg of low-density polyethylene under stirring (stirring rate: 30rpm, time: 10 min). Wherein the mole ratio of the total diacid chain segments to the total diol chain segments in the copolyester X is 0.95:1, and the mole ratio of the total diacid chain segments to the total diol chain segments in the copolyester Y is 0.95:1. Extruding and granulating the obtained mixture by a double-screw extruder, wherein the rotating speed of the screw is controlled to be 10rpm, the torque is 20N x m, and the temperatures of all sections from a feed inlet to an extrusion outlet in the double-screw extruder are 150 ℃, 160 ℃, 170 ℃ and 170 ℃ in sequence, so as to prepare the copolyester material A1. And heating and softening the copolyester material A1 by boiled water, rapidly placing the copolyester material A1 in ice water, cooling to room temperature, wiping the copolyester material A to dryness, embedding the sound guide tube and the hearing aid components according to the structural schematic diagram, and adhering and fixing the sound guide tube and the hearing aid components in the copolyester material A by silica gel to obtain the hearing aid B1. When in use, the hearing aid B1 is heated and softened by an electric hair drier, is rapidly cooled to about 37 ℃ by ice water, is wiped dry, is shaped according to the morphological characteristics of the auditory canal of a user, and is hardened after the shaping is finished.
Example 2
The hearing aid comprises a hearing aid component, an ear mold, a small hole and a sound guide tube, wherein the hearing aid component and the sound guide tube are embedded in the ear mold, and the hearing aid component is positioned on one side of the ear mold close to an inner auditory canal; the sound guide tube is positioned at the horizontal central line position inside the ear mold, one end of the sound guide tube is connected with the hearing aid component, the other end of the sound guide tube is communicated with the external environment through a small hole on the ear mold, and the small hole is positioned at the central position of one surface of the ear mold facing the outside of the ear. The diameter of the small hole is consistent with the outer diameter of the sound guide tube, and the size of the small hole is 2.2mm; the hearing aid components and the sound guide tube are fixed in the ear mold by using an adhesive, and the adhesive is selected from nylon; the sound guide tube and the hearing aid component are commercially available products, copper materials are selected as the sound guide tube, and the wall thickness of the sound guide tube is 0.7mm.
Preparation and use of hearing aids: under stirring (stirring speed: 30rpm, time: 10 min), 6.5kg of terephthalic acid-butanediol-adipic acid-isosorbide copolyester X (weight average molecular weight: 130,000, wherein the content of terephthalic acid repeating units was 55 mol% based on the total mole number of terephthalic acid and adipic acid repeating units, and the content of isosorbide repeating units was 20 mol% based on the total mole number of butanediol and isosorbide repeating units), 3kg of terephthalic acid-hexanediol-succinic acid copolyester Y (weight average molecular weight: 100,000, wherein the content of terephthalic acid repeating units was 60 mol% based on the total mole number of terephthalic acid and succinic acid repeating units), 0.2kg of jasmine essence and 0.3kg of low density polyethylene were mixed. Wherein the mole ratio of the total diacid chain segments to the total diol chain segments in the copolyester X is 1:1, and the mole ratio of the total diacid chain segments to the total diol chain segments in the copolyester Y is 1:1. Extruding and granulating the obtained mixture by a double-screw extruder, wherein the rotating speed of the screw is controlled to be 10rpm, the torque is 20N x m, and the temperatures of all sections from a feed inlet to an extrusion outlet in the double-screw extruder are 150 ℃, 160 ℃, 170 ℃ and 170 ℃ in sequence, so as to prepare the copolyester material A2. And heating and softening the copolyester material A2 by boiled water, rapidly placing the copolyester material A2 in ice water, cooling to room temperature, wiping the copolyester material A to dryness, embedding the sound guide tube and the hearing aid components according to the structural schematic diagram, and adhering and fixing the sound guide tube and the hearing aid components in the copolyester material A by nylon to obtain the hearing aid B2. When in use, the hearing aid B2 is heated and softened by an electric hair drier, is rapidly cooled to about 37 ℃ by ice water, is wiped dry, is shaped according to the morphological characteristics of the auditory canal of a user, and is hardened after the shaping is finished.
Example 3
The hearing aid comprises a hearing aid component, an ear mold, a small hole and a sound guide tube, wherein the hearing aid component and the sound guide tube are embedded in the ear mold, and the hearing aid component is positioned on one side of the ear mold close to an inner auditory canal; the sound guide tube is positioned at the horizontal central line position inside the ear mold, one end of the sound guide tube is connected with the hearing aid component, the other end of the sound guide tube is communicated with the external environment through a small hole on the ear mold, and the small hole is positioned at the central position of one surface of the ear mold facing the outside of the ear. The diameter of the small hole is consistent with the outer diameter of the sound guide tube, and the size of the small hole is 2.5mm; the hearing aid component and the sound guide tube are fixed in the ear mold by using an adhesive, and the adhesive is selected from polypropylene; the sound guide tube and the hearing aid component are commercially available products, copper materials are selected as the sound guide tube, and the wall thickness of the sound guide tube is 0.8mm.
Preparation and use of hearing aids: under stirring (stirring speed: 30rpm, time: 10 min), 6.5kg of terephthalic acid-butanediol-succinic acid-2, 4-tetramethyl-1, 3-cyclobutanediol copolyester X (weight average molecular weight: 150,000, wherein the content of terephthalic acid repeating units was 30 mol% based on the total mole number of terephthalic acid and succinic acid repeating units); the pellets of 2, 4-tetramethyl 1, 3-cyclobutanediol repeat unit content of 20 mol% based on the total mole number of butanediol and 2, 4-tetramethyl 1, 3-cyclobutanediol repeat unit content, 3kg of terephthalic acid-hexanediol-succinic acid copolyester Y (weight average molecular weight: 100,000, wherein terephthalic acid repeat unit content of 60 mol% based on the total mole number of terephthalic acid and succinic acid repeat unit content) and 0.2kg of jasmine essence were mixed with 0.3kg of low-density polyethylene. Wherein the mole ratio of the total diacid chain segments to the total diol chain segments in the copolyester X is 0.9:1, and the mole ratio of the total diacid chain segments to the total diol chain segments in the copolyester Y is 0.9:1. Extruding and granulating the obtained mixture by a double-screw extruder, wherein the rotating speed of the screw is controlled to be 10rpm, the torque is 20N x m, and the temperatures of all sections from a feed inlet to an extrusion outlet in the double-screw extruder are 150 ℃, 160 ℃, 170 ℃ and 170 ℃ in sequence, so as to prepare the copolyester material A3. And heating and softening the copolyester material A3 by boiled water, rapidly placing the copolyester material A3 in ice water, cooling to room temperature, wiping the copolyester material A to dryness, embedding the sound guide tube and the hearing aid components according to the structural schematic diagram, and adhering and fixing the sound guide tube and the hearing aid components in the copolyester material A3 by polypropylene to obtain the hearing aid B3. When in use, the hearing aid B3 is heated and softened by an electric hair drier, is rapidly cooled to about 37 ℃ by ice water, is wiped dry, is shaped according to the morphological characteristics of the auditory canal of a user, and is hardened after the shaping is finished.
Example 4
The hearing aid comprises a hearing aid component, an ear mold, a small hole and a sound guide tube, wherein the hearing aid component and the sound guide tube are embedded in the ear mold, and the hearing aid component is positioned on one side of the ear mold close to an inner auditory canal; the sound guide tube is positioned at the horizontal central line position inside the ear mold, one end of the sound guide tube is connected with the hearing aid component, the other end of the sound guide tube is communicated with the external environment through a small hole on the ear mold, and the small hole is positioned at the central position of one surface of the ear mold facing the outside of the ear. The diameter of the small hole is consistent with the outer diameter of the sound guide tube, and the size of the small hole is 2.1mm; the hearing aid components and the sound guide tube are fixed in the ear mold by using an adhesive, and the adhesive is selected from nylon; the sound guide tube and the hearing aid component are commercially available products, copper materials are selected as the sound guide tube, and the wall thickness of the sound guide tube is 0.7mm.
Preparation and use of hearing aids: 7kg of terephthalic acid-butanediol-succinic acid-1, 4-cyclohexanedimethanol copolyester X (weight average molecular weight: 120,000, wherein the content of terephthalic acid repeating units was 60 mol% based on the total number of moles of terephthalic acid and succinic acid repeating units, and the content of 1, 4-cyclohexanedimethanol repeating units was 25 mol% based on the total number of moles of butanediol and 1, 4-cyclohexanedimethanol repeating units) was mixed with particles, 2.5kg of terephthalic acid-propanediol-succinic acid copolyester Y (weight average molecular weight: 110,000, wherein the content of terephthalic acid repeating units was 80 mol% based on the total number of moles of terephthalic acid and succinic acid repeating units), 0.2kg of jasmine essence and 0.3kg of low-density polyethylene under stirring (stirring rate: 30rpm, time: 10 min). Wherein the molar ratio of the total diacid chain segments to the total diol chain segments in the copolyester X is 0.95:1, and the molar ratio of the total diacid chain segments to the total diol chain segments in the copolyester Y is 1:1. Extruding and granulating the obtained mixture by a double-screw extruder, wherein the rotating speed of the screw is controlled to be 10rpm, the torque is 20N x m, and the temperatures of all sections from a feed inlet to an extrusion outlet in the double-screw extruder are 150 ℃, 160 ℃, 170 ℃ and 170 ℃ in sequence, so as to prepare the copolyester material A4. And heating and softening the copolyester material A4 by boiled water, rapidly placing the copolyester material A4 in ice water, cooling to room temperature, wiping the copolyester material A to dryness, embedding the sound guide tube and the hearing aid components according to the structural schematic diagram, and adhering and fixing the sound guide tube and the hearing aid components in the copolyester material A by nylon to obtain the hearing aid B4. When in use, the hearing aid B4 is heated and softened by an electric hair drier, is rapidly cooled to about 37 ℃ by ice water, is wiped dry, is shaped according to the morphological characteristics of the auditory canal of a user, and is hardened after the shaping is finished.
Example 5
The hearing aid comprises a hearing aid component, an ear mold, a small hole and a sound guide tube, wherein the hearing aid component and the sound guide tube are embedded in the ear mold, and the hearing aid component is positioned on one side of the ear mold close to an inner auditory canal; the sound guide tube is positioned at the horizontal central line position inside the ear mold, one end of the sound guide tube is connected with the hearing aid component, the other end of the sound guide tube is communicated with the external environment through a small hole on the ear mold, and the small hole is positioned at the central position of one surface of the ear mold facing the outside of the ear. The diameter of the small hole is consistent with the outer diameter of the sound guide tube, and the size of the small hole is 2.5mm; the hearing aid components and the sound guide tube are fixed in the ear mold by using an adhesive, and the adhesive is selected from silica gel; the sound guide tube and the hearing aid component are commercially available products, copper materials are selected as the sound guide tube, and the wall thickness of the sound guide tube is 0.8mm.
Preparation and use of hearing aids: 7kg of terephthalic acid-butanediol-succinic acid-2, 4-tetramethyl-1, 3-cyclobutanediol copolyester X (weight average molecular weight: 150,000, wherein the content of terephthalic acid repeating units is 60 mol% based on the total number of moles of terephthalic acid and succinic acid repeating units) was stirred at 30rpm for 10 min; 2.5kg of particles of terephthalic acid-propylene glycol-succinic acid copolyester Y (weight average molecular weight: 100,000, wherein the content of terephthalic acid repeating units is 60 mol% based on the total number of moles of terephthalic acid and succinic acid repeating units), 0.2kg of jasmine essence and 0.3kg of low-density polyethylene were mixed based on the total number of moles of butanediol and 2, 4-tetramethyl 1, 3-cyclobutanediol repeating units. Wherein the mole ratio of the total diacid chain segments to the total diol chain segments in the copolyester X is 1:1, and the mole ratio of the total diacid chain segments to the total diol chain segments in the copolyester Y is 0.9:1. Extruding and granulating the obtained mixture by a double-screw extruder, wherein the rotating speed of the screw is controlled to be 10rpm, the torque is 20N x m, and the temperatures of all sections from a feed inlet to an extrusion outlet in the double-screw extruder are 150 ℃, 160 ℃, 170 ℃ and 170 ℃ in sequence, so as to prepare the copolyester material A5. And heating and softening the copolyester material A5 by boiled water, rapidly placing the copolyester material A into ice water, cooling to room temperature, wiping the copolyester material A to dryness, embedding the sound guide tube and the hearing aid components according to the structural schematic diagram, and adhering and fixing the sound guide tube and the hearing aid components in the copolyester material A by using silica gel to obtain the hearing aid B5. When in use, the hearing aid B5 is heated and softened by an electric hair drier, is rapidly cooled to about 37 ℃ by ice water, is wiped dry, is shaped according to the morphological characteristics of the auditory canal of a user, and is hardened after the shaping is finished.
Example 6
The hearing aid comprises a hearing aid component, an ear mold, a small hole and a sound guide tube, wherein the hearing aid component and the sound guide tube are embedded in the ear mold, and the hearing aid component is positioned on one side of the ear mold close to an inner auditory canal; the sound guide tube is positioned at the horizontal central line position inside the ear mold, one end of the sound guide tube is connected with the hearing aid component, the other end of the sound guide tube is communicated with the external environment through a small hole on the ear mold, and the small hole is positioned at the central position of one surface of the ear mold facing the outside of the ear. The diameter of the small hole is consistent with the outer diameter of the sound guide tube, and the size of the small hole is 2mm; the hearing aid component and the sound guide tube are fixed in the ear mold by using an adhesive, and the adhesive is selected from polypropylene; the sound guide tube and the hearing aid component are commercially available products, copper materials are selected as the sound guide tube, and the wall thickness of the sound guide tube is 0.8mm.
Preparation and use of hearing aids: 7kg of terephthalic acid-butanediol-succinic acid-isosorbide copolyester X (weight average molecular weight: 130,000, wherein the content of terephthalic acid repeating units is 60 mol% based on the total number of moles of terephthalic acid and succinic acid repeating units, and the content of isosorbide repeating units is 5 mol% based on the total number of moles of butanediol and isosorbide repeating units) and 2.5kg of terephthalic acid-propanediol-succinic acid copolyester Y (weight average molecular weight: 100,000, wherein the content of terephthalic acid repeating units is 60 mol% based on the total number of moles of terephthalic acid and succinic acid repeating units) were mixed with 0.3kg of low-density polyethylene under stirring (stirring rate: 30rpm, time: 10 min). Wherein the mole ratio of the total diacid chain segments to the total diol chain segments in the copolyester X is 0.95:1, and the mole ratio of the total diacid chain segments to the total diol chain segments in the copolyester Y is 0.9:1. Extruding and granulating the obtained mixture by a double-screw extruder, wherein the rotating speed of the screw is controlled to be 10rpm, the torque is 20N x m, and the temperatures of all sections from a feed inlet to an extrusion outlet in the double-screw extruder are 150 ℃, 160 ℃, 170 ℃ and 170 ℃ in sequence, so as to prepare the copolyester material A6. And heating and softening the copolyester material A6 by boiled water, rapidly placing the copolyester material A6 in ice water, cooling to room temperature, wiping the copolyester material A to dryness, embedding the sound guide tube and the hearing aid components according to the structural schematic diagram, and adhering and fixing the sound guide tube and the hearing aid components in the copolyester material A by polypropylene to obtain the hearing aid B6. When in use, the hearing aid B6 is heated and softened by an electric hair drier, is rapidly cooled to about 37 ℃ by ice water, is wiped dry, is shaped according to the morphological characteristics of the auditory canal of a user, and is hardened after the shaping is finished.
Comparative example 1
The hearing aid comprises a hearing aid component, an ear mold, a small hole and a sound guide tube, wherein the hearing aid component and the sound guide tube are embedded in the ear mold, and the hearing aid component is positioned on one side of the ear mold close to an inner auditory canal; the sound guide tube is positioned at the horizontal central line position inside the ear mold, one end of the sound guide tube is connected with the hearing aid component, the other end of the sound guide tube is communicated with the external environment through a small hole on the ear mold, and the small hole is positioned at the central position of one surface of the ear mold facing the outside of the ear. The diameter of the small hole is consistent with the outer diameter of the sound guide tube, and the size of the small hole is 2.2mm; the hearing aid components and the sound guide tube are fixed in the ear mold by using an adhesive, and the adhesive is selected from silica gel; the sound guide tube and the hearing aid component are commercially available products, copper materials are selected as the sound guide tube, and the wall thickness of the sound guide tube is 0.7mm.
Preparation and use of hearing aids: 9.5kg of terephthalic acid-butanediol-succinic acid-1, 4-cyclohexanedimethanol copolyester X (weight average molecular weight 120,000, wherein the content of terephthalic acid repeating units is 60 mol% based on the total number of moles of terephthalic acid and succinic acid repeating units and the content of 1, 4-cyclohexanedimethanol repeating units is 25 mol% based on the total number of moles of butanediol and 1, 4-cyclohexanedimethanol repeating units) particles, 0.2kg of jasmine essence and 0.3kg of low density polyethylene were mixed under stirring (stirring rate: 30rpm, time: 10 min). Wherein the mole ratio of the total diacid chain segments to the total diol chain segments in the copolyester X is 1:1. Extruding and granulating the obtained mixture by a double-screw extruder, wherein the rotating speed of the screw is controlled to be 10rpm, the torque is 20N x m, and the temperatures of all sections from a feed inlet to an extrusion outlet in the double-screw extruder are 150 ℃, 160 ℃, 170 ℃ and 170 ℃ in sequence, so as to prepare the copolyester material A7. And heating and softening the copolyester material A7 by boiled water, rapidly placing the copolyester material A7 in ice water, cooling to room temperature, wiping the copolyester material A to dryness, embedding the sound guide tube and the hearing aid components according to the structural schematic diagram, and adhering and fixing the sound guide tube and the hearing aid components in the copolyester material A by silica gel to obtain the hearing aid B7. When in use, the hearing aid B7 is heated and softened by an electric hair drier, is rapidly cooled to about 37 ℃ by ice water, is wiped dry, is shaped according to the morphological characteristics of the auditory canal of a user, and is hardened after the shaping is finished.
Comparative example 2
The hearing aid comprises a hearing aid component, an ear mold, a small hole and a sound guide tube, wherein the hearing aid component and the sound guide tube are embedded in the ear mold, and the hearing aid component is positioned on one side of the ear mold close to an inner auditory canal; the sound guide tube is positioned at the horizontal central line position inside the ear mold, one end of the sound guide tube is connected with the hearing aid component, the other end of the sound guide tube is communicated with the external environment through a small hole on the ear mold, and the small hole is positioned at the central position of one surface of the ear mold facing the outside of the ear. The diameter of the small hole is consistent with the outer diameter of the sound guide tube, and the size of the small hole is 2mm; the hearing aid component and the sound guide tube are fixed in the ear mold by using an adhesive, and the adhesive is selected from polypropylene; the sound guide tube and the hearing aid component are commercially available products, copper materials are selected as the sound guide tube, and the wall thickness of the sound guide tube is 0.7mm.
Preparation and use of hearing aids: 9.5kg of terephthalic acid-butanediol-adipic acid-isosorbide copolyester X (weight average molecular weight 130,000, wherein the content of terephthalic acid repeating units is 55 mol% based on the total number of moles of terephthalic acid and adipic acid repeating units, and the content of isosorbide repeating units is 20 mol% based on the total number of moles of butanediol and isosorbide repeating units) were mixed with stirring (stirring rate: 30rpm, time: 10 min), and 0.2kg of jasmine essence and 0.3kg of low density polyethylene. Wherein the mole ratio of the total diacid chain segments to the total diol chain segments in the copolyester X is 0.9:1. Extruding and granulating the obtained mixture by a double-screw extruder, wherein the rotating speed of the screw is controlled to be 10rpm, the torque is 20N x m, and the temperatures of all sections from a feed inlet to an extrusion outlet in the double-screw extruder are 150 ℃, 160 ℃, 170 ℃ and 170 ℃ in sequence, so as to prepare the copolyester material A8. And heating and softening the copolyester material A8 by boiled water, rapidly placing the copolyester material A in ice water, cooling to room temperature, wiping the copolyester material A to dryness, embedding the sound guide tube and the hearing aid components according to the structural schematic diagram, and adhering and fixing the sound guide tube and the hearing aid components in the copolyester material A by polypropylene to obtain the hearing aid B8. When in use, the hearing aid B8 is heated and softened by an electric hair drier, is rapidly cooled to about 37 ℃ by ice water, is wiped dry, is shaped according to the morphological characteristics of the auditory canal of a user, and is hardened after the shaping is finished.
Comparative example 3
The hearing aid comprises a hearing aid component, an ear mold, a small hole and a sound guide tube, wherein the hearing aid component and the sound guide tube are embedded in the ear mold, and the hearing aid component is positioned on one side of the ear mold close to an inner auditory canal; the sound guide tube is positioned at the horizontal central line position inside the ear mold, one end of the sound guide tube is connected with the hearing aid component, the other end of the sound guide tube is communicated with the external environment through a small hole on the ear mold, and the small hole is positioned at the central position of one surface of the ear mold facing the outside of the ear. The diameter of the small hole is consistent with the outer diameter of the sound guide tube, and the size of the small hole is 2mm; the hearing aid components and the sound guide tube are fixed in the ear mold by using an adhesive, and the adhesive is selected from silica gel; the sound guide tube and the hearing aid component are commercially available products, copper materials are selected as the sound guide tube, and the wall thickness of the sound guide tube is 0.7mm.
Preparation and use of hearing aids: under stirring (stirring rate: 30rpm, time: 10 min), 6.5kg of terephthalic acid-butanediol-succinic acid copolyester Y (weight average molecular weight: 100,000, wherein the content of terephthalic acid repeating units was 25 mol% based on the total mole number of terephthalic acid and succinic acid repeating units) particles, 3kg of terephthalic acid-butanediol-adipic acid copolyester (weight average molecular weight: 100,000, wherein the content of terephthalic acid repeating units was 65 mol% based on the total mole number of terephthalic acid and adipic acid repeating units) particles, 0.2kg of jasmine essence and 0.3kg of low-density polyethylene were mixed. Wherein the mole ratio of the total diacid chain segments to the total diol chain segments in the copolyester Y is 0.95:1. Extruding and granulating the obtained mixture by a double-screw extruder, wherein the rotating speed of the screw is controlled to be 10rpm, the torque is 20N x m, and the temperatures of all sections from a feed inlet to an extrusion outlet in the double-screw extruder are 150 ℃, 160 ℃, 170 ℃ and 170 ℃ in sequence, so as to prepare the copolyester material A9. And heating and softening the copolyester material A9 by boiled water, rapidly placing the copolyester material A9 in ice water, cooling to room temperature, wiping the copolyester material A to dryness, embedding the sound guide tube and the hearing aid components according to the structural schematic diagram, and adhering and fixing the sound guide tube and the hearing aid components in the copolyester material A by silica gel to obtain the hearing aid B9. When in use, the hearing aid B9 is heated and softened by an electric hair drier, is rapidly cooled to about 37 ℃ by ice water, is wiped dry, is shaped according to the morphological characteristics of the auditory canal of a user, and is hardened after the shaping is finished.
Test example 1 softening temperature test
The copolyester materials obtained in examples 1-6 and comparative example 3 were softened by being placed in hot water at different temperatures, and the temperatures required to trigger softening of the copolyester materials were recorded separately, and the results are shown in table 1.
It can be seen that the temperature required for softening the copolyester materials A1-A6 obtained in examples 1-6 is lower than that of the copolyester material A9 obtained in comparative example 3, and the maximum amplitude reduction can reach 20 ℃. Reducing the softening trigger temperature of the copolyester material can greatly increase the convenience of use of the hearing aid.
TABLE 1
Figure BDA0003325316660000161
Test example 2 Shore A hardness test
The copolyester materials A1 to A8 obtained in examples 1 to 6 and comparative examples 1 to 2 were melted, and then treated at 170℃and 1000MPa for 5 minutes, and pressed into plates C1 to C8 having a thickness of 4mm and a side length of 7 cm. And taking out the hot plate, quenching the plate for 1min by using a chill block placed at room temperature for a long time, and recording a time zero point. The quenched sheet was subjected to a test for the change of Shore A hardness with time (measured by a Drickshorea A hand-held durometer, taking the measurement result after 3 seconds), and the results are shown in Table 2 below.
Table 2 shore a hardness test
Figure BDA0003325316660000171
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From the results of Table 2 above, it can be seen that the sheets C1-C8 made from the copolyesters A1-A8 obtained in examples 1-6 and comparative examples 1-2, respectively, were all lower in hardness at the beginning of the test (higher temperature) and increased slowly with time after cooling. Compared with the plates C7-C8 prepared by the copolyesters A7-A8 obtained in the comparative examples 1-2, the plates C1-C6 prepared by the copolyesters A1-A6 obtained in the examples 1-6 have a faster curing speed, the Shore A hardness reaches 50 only for about 4min, and the Shore A hardness reaches 7 min. The copolyesters A1-A6 obtained in examples 1-6 have good plasticity and fixity and a short curing time, and are suitable for the preparation of hearing aids.
Test example 3
1. Waterproof test
The panels C1 to C6 made of the copolyesters A1 to A6 obtained in examples 1 to 6 were weighed, sized, photographed and observed for appearance, respectively. The plate was immersed in 25 h of water and then taken out for air-drying, weighing, sizing, photographing and appearance were observed. The appearance of the panel after immersion was recorded as "unchanged" if it did not change from that before immersion, otherwise it was recorded as "changed". The dimensions of the panel after submersion were recorded as "no change" if they were within + -if they were compared to before submersion, and as "changed" otherwise. If the weight of the board after immersion is within + -if it is, then it is recorded as "no change", otherwise it is recorded as "changed". The results are shown in Table 3.
2. Shelf life test
The panels C1 to C6 made of the copolyesters A1 to A6 obtained in examples 1 to 6 were weighed, sized, photographed and observed for appearance, respectively. The resulting sheet was then left in a room temperature (25) atmospheric pressure environment for 2 years, the sheet was weighed, measured for size, photographed and observed for appearance. If the appearance of the panel did not change after 2 years of standing compared to before standing, it was recorded as "no change", otherwise it was recorded as "change". If the dimensions of the panel did not change after 2 years of standing compared to before standing, it was recorded as "no change", otherwise it was recorded as "change". If the weight of the board after 2 years of standing is within + -rear plate compared to before standing, it is recorded as "no change", otherwise it is recorded as "change". The results are shown in Table 3.
Table 3 waterproofness and shelf life test
Figure BDA0003325316660000181
As can be seen from the results of table 3 above, the hearing aid provided by the present invention has good water resistance and dimensional stability, so that it does not need special packaging such as water blocking during storage and transportation; and, shelf life at room temperature for at least two years.
The invention has been described in detail in connection with the specific embodiments and exemplary examples thereof, but such description is not to be construed as limiting the invention. It will be understood by those skilled in the art that various equivalent substitutions, modifications or improvements may be made to the technical solution of the present invention and its embodiments without departing from the spirit and scope of the present invention, and these fall within the scope of the present invention. The scope of the invention is defined by the appended claims.

Claims (15)

1. The hearing aid comprises a hearing aid component, an ear mold, a small hole and a sound guide tube, wherein the hearing aid component and the sound guide tube are embedded in the ear mold, and the hearing aid component is positioned on one side of the ear mold close to an inner auditory canal; the sound guide tube is positioned at the horizontal central line position inside the ear mold, one end of the sound guide tube is connected with the hearing aid component, the other end of the sound guide tube is communicated with the external environment through a small hole on the ear mold, and the small hole is positioned at the central position of one surface of the ear mold facing the outside of the ear.
2. Hearing aid according to claim 1, characterized in that the small pore diameter corresponds to the outer diameter of the sound guide tube, the pore diameter being in the range of 0.5-3mm, preferably 0.7-2.5mm.
3. The hearing aid according to claim 1, wherein the hearing aid component and sound guide tube are adhesively secured in the ear mold with an adhesive selected from at least one of nylon, silicone and polypropylene.
4. Hearing aid according to claim 1, characterized in that the sound guide tube is made of a hard material with a flexural modulus of more than 1GPa, preferably more than 3GPa; further preferably any one of copper, stainless steel, nylon 6 and polypropylene; and/or the number of the groups of groups,
the wall thickness of the sound guide tube is not less than 0.5mm, preferably 0.7-1 mm.
5. The hearing aid according to claim 1, wherein the ear mold is made of a copolyester material comprising copolyester X and copolyester Y; wherein the copolyester X comprises aliphatic diacid and/or derivative segments thereof, aromatic diacid and/or derivative segments thereof and glycol segments; the diol segment comprises at least one diol segment with a cyclic structure segment and at least one aliphatic diol segment; wherein the aromatic diacid and/or the derivative chain segments thereof account for 15-60 percent of the total diacid and/or the derivative chain segments thereof in mole percent;
Wherein the copolyester Y comprises aliphatic diacid and/or derivative segments thereof, aromatic diacid and/or derivative segments thereof, and at least one aliphatic diol segment; wherein the aromatic diacid and/or derivative chain segments thereof account for 50-95 percent of the total diacid and/or derivative chain segments in mole percent.
6. Hearing aid according to claim 5, characterized in that the copolyester X is 50-99 parts, preferably 55-80 parts, based on 100 parts total weight of copolyester; and/or the copolyester Y is 1 to 50 parts, preferably 20 to 45 parts.
7. Hearing aid according to claim 5, characterized in that the aromatic diacid and/or its derivative segments in the copolyester X represent 25-60 mole percent of the total diacid and/or its derivative segments; and/or the number of the groups of groups,
the diol chain segment with a cyclic structure in the copolyester X accounts for 1-60% of the total diol chain segment in mole percent, and is preferably 5-25%; and/or the number of the groups of groups,
the mole ratio of the total diacid chain segments to the total diol chain segments in the copolyester X is (0.8-1): 1, preferably (0.9 to 1): 1, a step of; and/or the number of the groups of groups,
the aromatic diacid and/or derivative chain segments thereof in the copolyester Y account for 60-85 percent of the total diacid and/or derivative chain segments thereof in mole percent; and/or the number of the groups of groups,
The mole ratio of the total diacid chain segments and the total diol chain segments in the copolyester Y is (0.8-1): 1, preferably (0.9 to 1): 1.
8. hearing aid according to claim 5, characterized in that the copolyester X and the copolyester Y are each independently at least one of random copolymers, alternating copolymers, block copolymers and graft copolymers, preferably random copolymers and/or block copolymers; and/or the molecular weight of the copolyester X and the copolyester Y ranges from 20000 to 200000, preferably from 80000 to 150000.
9. Hearing aid according to claim 5, characterized in that the aliphatic diacid and/or its derivatives are selected from at least one of 1, 4-succinic acid and/or its derivatives, 1, 6-adipic acid and/or its derivatives; and/or the number of the groups of groups,
the aromatic diacid and/or its derivative is selected from terephthalic acid and/or its derivative; and/or the number of the groups of groups,
the diol with the cyclic structure is at least one selected from 1, 4-cyclohexanedimethanol, isosorbide and 2, 4-tetramethyl 1, 3-cyclobutanediol; and/or the number of the groups of groups,
the aliphatic diol is at least one selected from 1, 3-propanediol/1, 4-butanediol or 1, 6-hexanediol.
10. Hearing aid according to claim 9, characterized in that the aliphatic diol segments in the copolyester X are different from the aliphatic diol segments in the copolyester Y; preferably, the method comprises the steps of,
The aliphatic diol chain segment in the copolyester X is from 1, 4-butanediol; the aliphatic diol chain segments in the copolyester Y are from 1, 3-propanediol and/or 1, 6-hexanediol.
11. Hearing aid according to claim 5, characterized in that it further comprises 0.5-10 parts, preferably 1.5-8 parts, of essence, based on 100 parts by weight of the total of copolyester X and copolyester Y.
12. Hearing aid according to claim 5, characterized in that it further comprises 1-15 parts, preferably 5-15 parts, of a lubricant, preferably at least one selected from stearic acid, butyl stearate, oleamide, ethylenebisstearamide and low-density polyethylene, based on 100 parts total weight of copolyester X and copolyester Y.
13. A method of manufacturing a hearing aid according to any one of claims 1 to 12, comprising subjecting the copolyester material to extrusion, preferably melt extrusion, in sequence to obtain the ear mold material.
14. A method of manufacturing a hearing aid as claimed in claim 13, characterized in that,
the extrusion temperature is 90-230 ℃, preferably 110-170 ℃; and/or the number of the groups of groups,
the molding mode is injection molding and/or compression molding.
15. A method of using a hearing aid according to any one of claims 1 to 12, comprising heating the ear mould to a temperature sufficient to soften it, then rapidly cooling it to a temperature acceptable to the human body, wiping it clean, placing it in the ear canal, adjusting the shape of the ear mould according to the morphological characteristics of the patient's ear canal, and curing the ear mould after adjustment.
CN202111260283.XA 2021-10-28 2021-10-28 Hearing aid and preparation method and application method thereof Pending CN116055971A (en)

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