CN103194032B - SEBS thermoplastic high-elasticity earphone cord coating special-purpose material and preparation method thereof - Google Patents
SEBS thermoplastic high-elasticity earphone cord coating special-purpose material and preparation method thereof Download PDFInfo
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- CN103194032B CN103194032B CN201210375179.XA CN201210375179A CN103194032B CN 103194032 B CN103194032 B CN 103194032B CN 201210375179 A CN201210375179 A CN 201210375179A CN 103194032 B CN103194032 B CN 103194032B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/911—Cooling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0022—Combinations of extrusion moulding with other shaping operations combined with cutting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/04—Particle-shaped
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
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Abstract
The invention belongs to the technical field of thermoplastic materials and relates to a SEBS thermoplastic high-elasticity earphone cord coating special-purpose material. The SEBS thermoplastic high-elasticity earphone cord coating special-purpose material comprises, by weight, 30.0 to 60.0% of a SEBS rubber resin, 10.0 to 35.0% of a softening plasticizer, 5.0 to 20.0% of a modifier, 10.0 to 35.0% of a polypropylene resin, 0.3 to 1.5% of an anti-oxidant, 0.3 to 1.5% of a light stabilizer, 0.3 to 1.5% of a metal deactivator and 0.3 to 1.5% of a processing assistant. Compared with the prior art, the SEBS thermoplastic high-elasticity earphone cord coating special-purpose material has an optimized formula, has good stability, good aging resistance, high elasticity, yellowing resistance, copper toxicity resistance, high tensile strength and a silky and elegant handle, and can be processed and molded easily. In addition, the invention also discloses a preparation method of the SEBS thermoplastic high-elasticity earphone cord coating special-purpose material.
Description
Technical field
The invention belongs to thermoplastic material technical field, particularly relate to a kind of SEBS thermoplastic elastomer property earphone cord tegument proprietary material and preparation method thereof.
Background technology
Along with the arrival in 3G epoch and improving constantly of people's living standard; the mode of life also more and more diversification of people; nowadays; be in when people go on a journey outside or lie fallow; often can carry out video calling, see the mobile phone TV or the activity such as to listen to the music; in order to obtain good tonequality, also in order to not affect the privacy that others also guards oneself to a certain extent, people generally understand choice for use earphone to implement above-mentioned activity.In addition, earphone becomes the parts of the sound electronic product indispensabilities such as mobile phone, computer and walkman already.
Earphone generally comprises earphone cord and is arranged on earplug or the hangers of earphone cord one or both ends.Wherein, earphone cord generally comprises electrical conductor, anti-elater and outer quilt, and wherein, electrical conductor is wrapped on anti-elater, is then wrapped in outside electrical conductor outward.Generally there is the shortcomings such as not high, the easy xanthochromia of elasticity, the weak and tensile strength of anti-copper evil ability are low in earphone cord tegument of the prior art, folding or curling owing to often needing in the use procedure of earphone cord, therefore after using for some time, earphone cord tegument is with regard to problems such as easy breakage, fracture, xanthochromia, decortications, make electrical conductor out exposed, affect the outward appearance of earphone cord, even affect the tonequality of earphone, affect it and normally use.
SEBS is a kind of linear three embedding multipolymers, because it is not containing unsaturated link(age), therefore has satisfactory stability and ageing resistance, is expected to the outer quilt being used as earphone cord.But because its rigidity is comparatively strong, modulus is higher, and therefore its elasticity is lower, tensile strength is low, and anti-copper evil is indifferent, therefore, is necessary to carry out modification to it, to improve its elasticity, tensile strength and anti-copper evil ability.
In view of this, the necessary one that provides has snappiness, color inhibition, anti-copper evil and high-tensile SEBS thermoplastic elastomer property earphone cord tegument proprietary material and preparation method thereof.
Summary of the invention
An object of the present invention is: for the deficiencies in the prior art, and provide one to have snappiness, color inhibition, anti-copper evil and high-tensile SEBS thermoplastic elastomer property earphone cord tegument proprietary material, to overcome the deficiencies such as not high, the easy xanthochromia of earphone cord tegument elasticity of the prior art, the weak and tensile strength of anti-copper evil ability are low.
In order to above-mentioned purpose, the present invention adopts following technical scheme:
A kind of SEBS thermoplastic elastomer property earphone cord tegument proprietary material, by weight percentage, comprises following component:
SEBS rubber resin 30.0 ~ 60.0%;
Softening softening agent 10.0 ~ 35.0%;
Modification agent 5.0 ~ 20.0%;
Acrylic resin 10.0 ~ 35.0%;
Oxidation inhibitor 0.3 ~ 1.5%;
Photostabilizer 0.3 ~ 1.5%;
Metal passivator 0.3 ~ 1.5%;
Processing aid 0.3 ~ 1.5%.
One as SEBS thermoplastic elastomer property earphone cord tegument proprietary material of the present invention is improved, and described SEBS rubber resin is weight-average molecular weight is 50,000-250, the SIS/SEBS of 000.SIS/SEBS is a kind of linear copolymer, because it is not containing unsaturated link(age), therefore has satisfactory stability and ageing resistance,
One as SEBS thermoplastic elastomer property earphone cord tegument proprietary material of the present invention is improved, and described softening softening agent is at least one in saturated straight chain naphthenic oil and white mineral oil.The consistency of these softening softening agent and SEBS rubber resin is good, effectively can improve the interaction between SEBS rubber resin molecular chain, put forward high molecular mutual locomotivity, finally improve the mobility of sizing material, to improve elasticity and the workability of the final SEBS thermoplastic elastomer obtained.In addition, the physicals of these softening softening agent to SEBS thermoplastic elastomer does not have detrimentally affect, and environment friendly and pollution-free, also has good light, thermostability.
One as SEBS thermoplastic elastomer property earphone cord tegument proprietary material of the present invention is improved, described modification agent is SIS/SEBS grafted maleic anhydride (SEBS-g-MAH), polyolefin elastomer grafted maleic anhydride (POE-g-MAH), at least one in atactic styrene-maleic anhydride copolymer (SMA) and ethylene-vinyl acetate (EVA).These modification agents can improve elasticity and the snappiness of the final SEBS thermoplastic elastomer obtained, though make the earphone cord tegument made with it through repeatedly folding and bending also can not damaged and fracture.
One as SEBS thermoplastic elastomer property earphone cord tegument proprietary material of the present invention is improved, and described acrylic resin is at least one in homo-polypropylene (HPP), Co-polypropylene (BPP) and atactic copolymerized polypropene (RPP).Adding of acrylic resin can make the molecular chain of SEBS rubber resin more soft, thus increases the elasticity of product, makes it have soft feel.In addition, polypropylene also has very strong resistibility to chemical erosion, thus improves the resistance to chemical corrosion of SEBS thermoplastic elastomer.
One as SEBS thermoplastic elastomer property earphone cord tegument proprietary material of the present invention is improved, described oxidation inhibitor is at least one in the two octadecyl of 2,6 di tert butyl 4 methyl phenol, phosphorous acid octadecyl ester, phosphorous acid ester in the last of the ten Heavenly stems and thio-2 acid and the two lauryl alcohol ester of thio-2 acid.Easily there is thermal-oxidative degradation reaction in the macromolecular materials such as SEBS rubber resin, adding of oxidation inhibitor can keep these high molecular premium propertiess, extends its work-ing life in atmosphere.Wherein, 2,6 di tert butyl 4 methyl phenol can eliminate free radical, stops the carrying out of free chain reaction; Next four then can hydroperoxide decomposition, can stop the carrying out of free chain reaction equally, thus prevent the oxidation of the macromolecular materials such as SEBS rubber resin.
One as SEBS thermoplastic elastomer property earphone cord tegument proprietary material of the present invention is improved, and described photostabilizer is at least one in 4-dihydroxy benaophenonel photostabilizer, I-hydroxybenzotriazole photostabilizer, hindered amine stabilizer and hindered phenol photostabilizer.The polymkeric substance such as SEBS rubber resin are under daylight or strong fluorescence; oneself's oxidation is caused because absorbing ultraviolet; cause polymer degradation; the outward appearance of product and physical and mechanical properties are worsened; the free radical that the adding of photostabilizer can shield, reflect or absorb ultraviolet or catch because photoredox reaction produces and prevent product from suffering ultraviolet destruction, thus play the protection outward appearance of product and the effect of physical and mechanical properties.
One as SEBS thermoplastic elastomer property earphone cord tegument proprietary material of the present invention is improved, described metal passivator is 1, two [β-(3 of 2-, 5-di-tert-butyl-hydroxy phenyl) propionyl] hydrazine, this material has the dual structure of hindered phenol and hydrazides concurrently, there is anti-oxidant and function that is metal deactivating simultaneously, effectively can prevent the autoxidation that polymkeric substance causes because of the existence of transition metal ion (especially cupric ion), to extend the work-ing life of product.
One as SEBS thermoplastic elastomer property earphone cord tegument proprietary material of the present invention is improved, and described processing aid is at least one in butyl polyacrylate, polysiloxane, metallic soap, stearic acid complex ester and acid amides.The interpolation of processing aid can improve raw-material workability.
Relative to prior art, the present invention passes through optimization of C/C composites, softening agent will be softened, modification agent, acrylic resin, oxidation inhibitor, photostabilizer, metal passivator and processing aid mix with SEBS rubber resin according to appropriate ratio, the final SEBS thermoplastic elastomer obtained is made not only to have satisfactory stability and ageing resistance, and there is snappiness, color inhibition, anti-copper evil, tensile strength is high, sliding and the very easily feature such as machine-shaping of feel flexible silk as silk, therefore the earphone cord tegument using it to prepare also has snappiness, color inhibition, anti-copper evil, tensile strength is high, the features such as feel flexible silk as silk is sliding, that can stand repeatedly is folding and bending, and the change of weather also can not impact it, the features such as outward appearance flexible silk cunning and non yellowing can meet the demand of high-grade earphone cord.
Another object of the present invention is the preparation method providing a kind of above-mentioned SEBS thermoplastic elastomer property earphone cord tegument proprietary material, comprises the following steps:
The first step, SEBS rubber resin, softening softening agent, modification agent, acrylic resin, oxidation inhibitor, photostabilizer, metal passivator and processing aid are fully mixed according to the weight percent of 30.0 ~ 60.0%, 10.0 ~ 35.0%, 5.0 ~ 20.0%, 10.0 ~ 35.0%, 0.3 ~ 1.5%, 0.3 ~ 1.5%, 0.3 ~ 1.5% and 0.3 ~ 1.5% respectively in high speed mixer, obtains mixture;
Second step, the mixture the first step obtained adds length-to-diameter ratio for (40-48): 1, extrusion temperature is 180 ~ 210 DEG C, rotating speed is melting mixing in the twin screw extruder of 350 ~ 480rpm, then extruded by head, tie rod, after air-cooled, pelletizing and drying, obtain the finished product.
Relative to prior art, production technique of the present invention is simple, the equipment used is simple, the energy and production cost can be saved, and suitability for industrialized production can be realized easily, and obtained product has snappiness, color inhibition, anti-copper is harmful, tensile strength is high, feel flexible silk as silk is sliding and the very easily feature such as machine-shaping, wide market.
Embodiment
Below in conjunction with embodiment, the present invention and Advantageous Effects thereof are described in detail, but the specific embodiment of the present invention is not limited to this.
Embodiment 1
The SEBS thermoplastic elastomer property earphone cord tegument proprietary material that the present embodiment provides, by weight percentage, comprises following component:
Weight-average molecular weight is the SIS/SEBS 50.0% of 50,000;
Softening softening agent saturated straight chain naphthenic oil 20.0%;
Modification agent SEBS copolymer grafted maleic anhydride (SEBS-g-MAH) 10.0%;
Homo-polypropylene 16.0%;
Oxidation inhibitor 2,6 di tert butyl 4 methyl phenol 1.0%;
Photostabilizer 4-dihydroxy benaophenonel 1.0%;
Two [β-(3, the 5-di-tert-butyl-hydroxy phenyl) propionyl] hydrazine 1.0% of metal passivator 1,2-;
Processing aid butyl polyacrylate 1.0%.
Its preparation method is as follows:
The first step, be 50 by S weight-average molecular weight, the SIS/SEBS of 000, softening softening agent saturated straight chain naphthenic oil, modification agent SEBS copolymer grafted maleic anhydride (SEBS-g-MAH), homo-polypropylene, oxidation inhibitor 2, 6-di-tert-butyl-4-methy phenol, photostabilizer 4-dihydroxy benaophenonel, metal passivator 1, two [β-(3 of 2-, 5-di-tert-butyl-hydroxy phenyl) propionyl] hydrazine and processing aid butyl acrylate be respectively according to 50.0%, 20.0%, 10.0%, 16.0%, 1.0%, 1.0%, the weight percent of 1.0% and 1.0% fully mixes in high speed mixer, obtain mixture,
Second step, the mixture the first step obtained adds that length-to-diameter ratio is 40:1, extrusion temperature is 180 DEG C, rotating speed is melting mixing in the twin screw extruder of 350rpm, then extruded by head, tie rod, after air-cooled, pelletizing and drying, obtain the finished product SEBS thermoplastic elastomer earphone cord tegument material.
Embodiment 2
The SEBS thermoplastic elastomer property earphone cord tegument proprietary material that the present embodiment provides, by weight percentage, comprises following component:
Weight-average molecular weight is the SIS/SEBS 40.0% of 100,000;
Softening softening agent white mineral oil 25.0%;
Modification agent polyolefin elastomer grafted maleic anhydride (POE-g-MAH) 13.0%;
Co-polypropylene 20.0%;
Oxidation inhibitor phosphorous acid octadecyl ester 0.5%;
Photostabilizer I-hydroxybenzotriazole 0.5%;
Two [β-(3, the 5-di-tert-butyl-hydroxy phenyl) propionyl] hydrazine 0.5% of metal passivator 1,2-;
Processing aid polysiloxane 0.5%.
Its preparation method is as follows:
The first step, be 100 by S weight-average molecular weight, the SIS/SEBS of 000, softening softening agent white mineral oil, modification agent polyolefin elastomer grafted maleic anhydride (POE-g-MAH), Co-polypropylene, oxidation inhibitor phosphorous acid octadecyl ester, photostabilizer I-hydroxybenzotriazole, metal passivator 1, two [β-(3 of 2-, 5-di-tert-butyl-hydroxy phenyl) propionyl] hydrazine and processing aid polysiloxane be respectively according to 40.0%, 25.0%, 13.0%, 20.0%, 0.5%, 0.5%, the weight percent of 0.5% and 0.5% fully mixes in high speed mixer, obtain mixture,
Second step, the mixture the first step obtained adds that length-to-diameter ratio is 42:1, extrusion temperature is 190 DEG C, rotating speed is melting mixing in the twin screw extruder of 360rpm, then extruded by head, tie rod, after air-cooled, pelletizing and drying, obtain the finished product SEBS thermoplastic elastomer earphone cord tegument material.
Embodiment 3
The SEBS thermoplastic elastomer property earphone cord tegument proprietary material that the present embodiment provides, by weight percentage, comprises following component:
Weight-average molecular weight is the SIS/SEBS 30.0% of 200,000;
Softening softening agent saturated straight chain naphthenic oil 30.0%;
Modification agent atactic styrene-maleic anhydride copolymer (SMA) 20%;
Atactic copolymerized polypropene 18.0%;
Oxidation inhibitor phosphorous acid ester in the last of the ten Heavenly stems 0.7%;
Photostabilizer hindered amine 0.3%;
Two [β-(3, the 5-di-tert-butyl-hydroxy phenyl) propionyl] hydrazine 0.7% of metal passivator 1,2-;
Processing aid metallic soap 0.3%.
Its preparation method is as follows:
The first step, be 200 by S weight-average molecular weight, the SIS/SEBS of 000, softening softening agent saturated straight chain naphthenic oil, modification agent atactic styrene-maleic anhydride copolymer (SMA), atactic copolymerized polypropene, oxidation inhibitor phosphorous acid ester in the last of the ten Heavenly stems, photostabilizer hindered amine, metal passivator 1, two [β-(3 of 2-, 5-di-tert-butyl-hydroxy phenyl) propionyl] hydrazine and processing aid metallic soap be respectively according to 30.0%, 30.0%, 20.0%, 18.0%, 0.7%, 0.3%, the weight percent of 0.7% and 0.3% fully mixes in high speed mixer, obtain mixture,
Second step, the mixture the first step obtained adds that length-to-diameter ratio is 44:1, extrusion temperature is 200 DEG C, rotating speed is melting mixing in the twin screw extruder of 400rpm, then extruded by head, tie rod, after air-cooled, pelletizing and drying, obtain the finished product SEBS thermoplastic elastomer earphone cord tegument material.
Embodiment 4
The SEBS thermoplastic elastomer property earphone cord tegument proprietary material that the present embodiment provides, by weight percentage, comprises following component:
Weight-average molecular weight is the SIS/SEBS 60.0% of 250,000;
Softening softening agent white mineral oil 10.0%;
Modification agent ethylene-vinyl acetate (EVA) 14.0%;
Co-polypropylene 10.0%;
The two octadecyl 1.5% of oxidation inhibitor thio-2 acid;
Photostabilizer hindered phenol 1.5%;
Two [β-(3, the 5-di-tert-butyl-hydroxy phenyl) propionyl] hydrazine 1.5% of metal passivator 1,2-;
Processing aid stearic acid complex ester 1.5%.
Its preparation method is as follows:
The first step, be 250 by S weight-average molecular weight, the SIS/SEBS of 000, softening softening agent white mineral oil, modification agent ethylene-vinyl acetate (EVA), Co-polypropylene, the two octadecyl of oxidation inhibitor thio-2 acid, photostabilizer hindered phenol, metal passivator 1, two [β-(3 of 2-, 5-di-tert-butyl-hydroxy phenyl) propionyl] hydrazine and processing aid stearic acid complex ester be respectively according to 60.0%, 10.0%, 14.0%, 10.0%, 1.5%, 1.5%, the weight percent of 1.5% and 1.5% fully mixes in high speed mixer, obtain mixture,
Second step, the mixture the first step obtained adds that length-to-diameter ratio is 46:1, extrusion temperature is 210 DEG C, rotating speed is melting mixing in the twin screw extruder of 450rpm, then extruded by head, tie rod, after air-cooled, pelletizing and drying, obtain the finished product SEBS thermoplastic elastomer property earphone cord tegument proprietary material.
Embodiment 5
The SEBS thermoplastic elastomer property earphone cord tegument proprietary material that the present embodiment provides, by weight percentage, comprises following component:
Weight-average molecular weight is the SIS/SEBS 45.0% of 120,000;
Softening softening agent saturated straight chain naphthenic oil 10.0%;
The softening saturated white mineral oil 5.0% of softening agent;
Modification agent SEBS copolymer grafted maleic anhydride (SEBS-g-MAH) 5.0%;
Homo-polypropylene 30.0%;
The two lauryl alcohol ester 1.2% of oxidation inhibitor thio-2 acid;
Photostabilizer 4-dihydroxy benaophenonel 1.3%;
Two [β-(3, the 5-di-tert-butyl-hydroxy phenyl) propionyl] hydrazine 1.3% of metal passivator 1,2-;
Processing aid acid amides 1.2%.
Its preparation method is as follows:
The first step, be 120 by S weight-average molecular weight, the SIS/SEBS of 000, softening softening agent saturated straight chain naphthenic oil, softening softening agent saturated white mineral oil modification agent SEBS copolymer grafted maleic anhydride (SEBS-g-MAH), homo-polypropylene, the two lauryl alcohol ester of oxidation inhibitor thio-2 acid, photostabilizer 4-dihydroxy benaophenonel, metal passivator 1, two [β-(3 of 2-, 5-di-tert-butyl-hydroxy phenyl) propionyl] hydrazine and processing aid acid amides be respectively according to 45.0%, 10.0%, 5.0%, 5.0%, 30.0%, 1.2%, 1.3%, the weight percent of 1.3% and 1.2% fully mixes in high speed mixer, obtain mixture,
Second step, the mixture the first step obtained adds that length-to-diameter ratio is 48:1, extrusion temperature is 195 DEG C, rotating speed is melting mixing in the twin screw extruder of 480rpm, then extruded by head, tie rod, after air-cooled, pelletizing and drying, obtain the finished product SEBS thermoplastic elastomer property earphone cord tegument proprietary material.
Embodiment 6
The SEBS thermoplastic elastomer property earphone cord tegument proprietary material that the present embodiment provides, by weight percentage, comprises following component:
Weight-average molecular weight is the SIS/SEBS 55.0% of 180,000;
Softening softening agent white mineral oil 15.0%;
Modification agent polyolefin elastomer grafted maleic anhydride (POE-g-MAH) 13.0%;
Modification agent atactic styrene-maleic anhydride copolymer (SMA) 5.0%;
Co-polypropylene 5.0%;
Homo-polypropylene 5.0%;
Oxidation inhibitor phosphorous acid octadecyl ester 0.5%;
Photostabilizer I-hydroxybenzotriazole 0.5%;
Two [β-(3, the 5-di-tert-butyl-hydroxy phenyl) propionyl] hydrazine 0.5% of metal passivator 1,2-;
Processing aid polysiloxane 0.5%.
Its preparation method is as follows:
The first step, be 100 by S weight-average molecular weight, the SIS/SEBS of 000, softening softening agent white mineral oil, modification agent polyolefin elastomer grafted maleic anhydride (POE-g-MAH), modification agent atactic styrene-maleic anhydride copolymer (SMA), Co-polypropylene, homo-polypropylene, oxidation inhibitor phosphorous acid octadecyl ester, photostabilizer I-hydroxybenzotriazole, metal passivator 1, two [β-(3 of 2-, 5-di-tert-butyl-hydroxy phenyl) propionyl] hydrazine and processing aid polysiloxane be respectively according to 55.0%, 15.0%, 13.0%, 5.0%, 5.0%, 5.0%, 0.5%, 0.5%, the weight percent of 0.5% and 0.5% fully mixes in high speed mixer, obtain mixture,
Second step, the mixture the first step obtained adds that length-to-diameter ratio is 43:1, extrusion temperature is 185 DEG C, rotating speed is melting mixing in the twin screw extruder of 375rpm, then extruded by head, tie rod, after air-cooled, pelletizing and drying, obtain the finished product SEBS thermoplastic elastomer property earphone cord tegument proprietary material.
Embodiment 7
The SEBS thermoplastic elastomer property earphone cord tegument proprietary material that the present embodiment provides, by weight percentage, comprises following component:
Weight-average molecular weight is the SIS/SEBS 35.0% of 100,000;
Softening softening agent white mineral oil 21.0%;
Modification agent polyolefin elastomer grafted maleic anhydride (POE-g-MAH) 12.0%;
Co-polypropylene 28.0%;
Oxidation inhibitor phosphorous acid octadecyl ester 0.5%;
Oxidation inhibitor 2,6 di tert butyl 4 methyl phenol 1.0%;
Photostabilizer I-hydroxybenzotriazole 0.5%;
Photostabilizer 4-dihydroxy benaophenonel 0.5%;
Two [β-(3, the 5-di-tert-butyl-hydroxy phenyl) propionyl] hydrazine 0.5% of metal passivator 1,2-;
Processing aid polysiloxane 0.5%;
Processing aid butyl polyacrylate 0.5%.
Its preparation method is as follows:
The first step, be 100 by S weight-average molecular weight, the SIS/SEBS of 000, softening softening agent white mineral oil, modification agent polyolefin elastomer grafted maleic anhydride (POE-g-MAH), Co-polypropylene, oxidation inhibitor phosphorous acid octadecyl ester, oxidation inhibitor 2, 6-di-tert-butyl-4-methy phenol, photostabilizer I-hydroxybenzotriazole, photostabilizer 4-dihydroxy benaophenonel, metal passivator 1, two [β-(3 of 2-, 5-di-tert-butyl-hydroxy phenyl) propionyl] hydrazine, processing aid polysiloxane and processing aid butyl polyacrylate are respectively according to 35.0%, 21.0%, 12.0%, 28.0%, 0.5%, 1.0%, 0.5%, 0.5%, 0.5%, the weight percent of 0.5% and 0.5% fully mixes in high speed mixer, obtain mixture,
Second step, the mixture the first step obtained adds that length-to-diameter ratio is 45:1, extrusion temperature is 205 DEG C, rotating speed is melting mixing in the twin screw extruder of 410rpm, then extruded by head, tie rod, after air-cooled, pelletizing and drying, obtain the finished product SEBS thermoplastic elastomer property earphone cord tegument proprietary material.
To sum up, the present invention passes through optimization of C/C composites, softening agent will be softened, modification agent, acrylic resin, oxidation inhibitor, photostabilizer, metal passivator and processing aid mix with SEBS rubber resin according to appropriate ratio, the final SEBS thermoplastic elastomer obtained is made not only to have satisfactory stability and ageing resistance, and there is snappiness, color inhibition, anti-copper evil, tensile strength is high, sliding and the very easily feature such as machine-shaping of feel flexible silk as silk, therefore the earphone cord tegument using it to prepare also has snappiness, color inhibition, anti-copper evil, tensile strength is high, the features such as feel flexible silk as silk is sliding, that can stand repeatedly is folding and bending, and the change of weather also can not impact it, the features such as outward appearance flexible silk cunning and non yellowing can meet the demand of high-grade earphone cord.
The announcement of book and instruction according to the above description, those skilled in the art in the invention can also carry out suitable change and amendment to above-mentioned embodiment.Therefore, the present invention is not limited to embodiment disclosed and described above, also should fall in the protection domain of claim of the present invention modifications and changes more of the present invention.In addition, although employ some specific terms in this specification sheets, these terms just for convenience of description, do not form any restriction to the present invention.
Claims (10)
1. a SEBS thermoplastic elastomer property earphone cord tegument proprietary material, is characterized in that, by weight percentage, comprises following component:
SEBS rubber resin 30.0 ~ 60.0%;
Softening softening agent 10.0 ~ 35.0%;
Modification agent 5.0 ~ 20.0%;
Acrylic resin 10.0 ~ 35.0%;
Oxidation inhibitor 0.3 ~ 1.5%;
Photostabilizer 0.3 ~ 1.5%;
Metal passivator 0.3 ~ 1.5%;
Processing aid 0.3 ~ 1.5%.
2. SEBS thermoplastic elastomer property earphone cord tegument proprietary material according to claim 1, is characterized in that: described SEBS rubber resin is weight-average molecular weight is 50,000-250, the SIS/SEBS of 000.
3. SEBS thermoplastic elastomer property earphone cord tegument proprietary material according to claim 1, is characterized in that: described softening softening agent is at least one in saturated straight chain naphthenic oil and white mineral oil.
4. SEBS thermoplastic elastomer property earphone cord tegument proprietary material according to claim 1, it is characterized in that: described modification agent is SIS/SEBS grafted maleic anhydride (SEBS-g-MAH), polyolefin elastomer grafted maleic anhydride (POE-g-MAH), at least one in atactic styrene-maleic anhydride copolymer (SMA) and ethylene-vinyl acetate (EVA).
5. SEBS thermoplastic elastomer property earphone cord tegument proprietary material according to claim 1, is characterized in that: described acrylic resin is at least one in homo-polypropylene (HPP) and Co-polypropylene (BPP).
6. SEBS thermoplastic elastomer property earphone cord tegument proprietary material according to claim 1, it is characterized in that: described oxidation inhibitor is at least one in the two octadecyl of 2,6 di tert butyl 4 methyl phenol, phosphorous acid octadecyl ester, phosphorous acid ester in the last of the ten Heavenly stems and thio-2 acid and the two lauryl alcohol ester of thio-2 acid.
7. SEBS thermoplastic elastomer property earphone cord tegument proprietary material according to claim 1, is characterized in that: described photostabilizer is at least one in 4-dihydroxy benaophenonel photostabilizer, I-hydroxybenzotriazole photostabilizer, hindered amine stabilizer and hindered phenol photostabilizer.
8. SEBS thermoplastic elastomer property earphone cord tegument proprietary material according to claim 1, is characterized in that: described metal passivator is two [β-(3, the 5-di-tert-butyl-hydroxy phenyl) propionyl] hydrazine of 1,2-.
9. SEBS thermoplastic elastomer property earphone cord tegument proprietary material according to claim 1, is characterized in that: described processing aid is at least one in butyl polyacrylate, polysiloxane, metallic soap, stearic acid complex ester and acid amides.
10. a preparation method for SEBS thermoplastic elastomer property earphone cord tegument proprietary material according to claim 1, is characterized in that, comprise the following steps:
The first step, SEBS rubber resin, softening softening agent, modification agent, acrylic resin, oxidation inhibitor, photostabilizer, metal passivator and processing aid are fully mixed according to the weight percent of 30.0 ~ 60.0%, 10.0 ~ 35.0%, 5.0 ~ 20.0%, 10.0 ~ 35.0%, 0.3 ~ 1.5%, 0.3 ~ 1.5%, 0.3 ~ 1.5% and 0.3 ~ 1.5% respectively in high speed mixer, obtains mixture;
Second step, the mixture the first step obtained adds length-to-diameter ratio for (40-48): 1, extrusion temperature is 180 ~ 210 DEG C, rotating speed is melting mixing in the twin screw extruder of 350 ~ 480rpm, then extruded by head, tie rod, after air-cooled, pelletizing and drying, obtain the finished product.
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Address after: 523000, No. second, 39 industrial zone, Wo Wo Village, Qiaotou town, Qiaotou County, Guangdong, Dongguan Patentee after: GUANGDONG JISU NEW MATERIAL CO.,LTD. Address before: 523000, No. second, 39 industrial zone, Wo Wo Village, Qiaotou town, Qiaotou County, Guangdong, Dongguan Patentee before: DONGGUAN JISU PLASTIC TECHNOLOGY Co.,Ltd. |
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Denomination of invention: SEBS Thermoplastic High Elastic Earphone Cable Outer Cover Special Material and Its Preparation Method Effective date of registration: 20230322 Granted publication date: 20150415 Pledgee: Bank of China Co.,Ltd. Dongguan Branch Pledgor: GUANGDONG JISU NEW MATERIAL CO.,LTD. Registration number: Y2023980035672 |
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