CN105566833A - Thermoplastic elastomer raw material for earphone cable and manufacturing method thereof - Google Patents
Thermoplastic elastomer raw material for earphone cable and manufacturing method thereof Download PDFInfo
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- CN105566833A CN105566833A CN201610066407.3A CN201610066407A CN105566833A CN 105566833 A CN105566833 A CN 105566833A CN 201610066407 A CN201610066407 A CN 201610066407A CN 105566833 A CN105566833 A CN 105566833A
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- thermoplastic elastomer
- earphone cord
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L53/00—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L53/02—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes
- C08L53/025—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes modified
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/10—Peculiar tacticity
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Abstract
The invention discloses a thermoplastic elastomer raw material for an earphone cable. The thermoplastic elastomer raw material is used for manufacturing the earphone cable and comprises, by weight, 30-40% of a hydrogenated styrene-butadiene block copolymer, 20-30% of softening oil, 10-15% of polypropylene resin, 5-10% of propenyl elastomer and 1-2% of a lubrication additive, wherein the sum of the weight ratios is a cardinal number. The high-transparency earphone cable is manufactured through the thermoplastic elastomer raw material, on the basis of keeping the consistent advantages of high elasticity, weather resistance, fatigue resistance and the like of the thermoplastic elastomer raw material, the earphone cable further has the advantages of high transparency, soft hand feeling and good smoothness, meanwhile, the manufacturing technology is easy to implement, practical production and machining are economical, convenient and fast, and the industrial application prospect is good.
Description
Technical field
The present invention relates to chemical starting material field, particularly a kind of thermoplastic elastomer raw material for earphone cord and manufacture method thereof and its application on high transparency earphone cord manufactures.
Background technology
Thermoplastic elastomer raw material, English name is ThermoPlasticElastomer (being called for short TPE) or ThermoPlasticRubber (being called for short TPR), is a kind of snappiness with rubber, high strength, high resilience, having again can the material of feature of injection molding.Compared with traditional thermoset rubber, thermoplastic elastomers has that forming process is simple, material is reusable, cost performance is high, environmental pollution is little, processing characteristics is superior, need not sulfuration, can plurality of advantages such as reducing costs be recycled, both can secondary injection molding, with body material coating and bondings such as PP, PE, PC, PS, ABS, also can be shaping separately, thermoplastic elastomer had both had the processing characteristics of thermoplastics, having again the physicals of vulcanized rubber, is the advantageous combination of plastics and rubber advantage.Thermoplastic elastomer is capturing the manor originally only belonging to vulcanized rubber without restraint.
High transparency earphone cord material is generally PVC or TPU material on the market at present, and PVC and TPU also exists the open defect that weathering resistance is bad and feel is soft not.But the wire rod transparency that general thermoplastic elastomer is made does not have PVC to go with TPU, and surperficial smooth degree does not have PVC to go with TPU.So in the urgent need to the transparency of a existing PVC and TPU and smooth degree on market, there is again the earphone cord material of the weathering resistance of thermoplastic elastomer and soft feel.
Summary of the invention
The object of the invention is to overcome the shortcoming of prior art and deficiency, a kind of thermoplastic elastomer raw material for earphone cord and manufacture method thereof are provided.
According to disclosed embodiment, a first aspect of the present invention proposes a kind of thermoplastic elastomer raw material for earphone cord, its component comprises: hydrogenated styrene-butadiene block copolymer, softening oil, acrylic resin, propylene-based elastomeric and lubricating auxiliary agent, with above-mentioned each composition weight sum for radix, its each component proportion is:
Further, described thermoplastic elastomer raw material, for the manufacture of earphone cord, adopts that the earphone cord transparency of described thermoplastic elastomer raw material is high, feel is soft smooth.
Further, described softening oil is rubber softening oil.
Further, described weather-proof auxiliary agent for promote earphone cord high lubricity, reduce friction, reduce Interface Adhesion.
According to disclosed embodiment, a second aspect of the present invention proposes a kind of manufacture method of the thermoplastic elastomer raw material for earphone cord, and described manufacture method comprises the following steps:
S1, described hydrogenated styrene-butadiene block copolymer to be stirred in high-speed stirring bucket, and be stirred to warm 60-70 degree Celsius, divide several times to add described softening oil according to a certain percentage to stir, finally add described softening oil and stir 10 minutes until fully blot;
S2, by the static placement of mixture that obtains in described step S1 some hours;
S3, the mixture obtained in described step S2 is added described acrylic resin, described propylene-based elastomeric and described lubricating auxiliary agent successively, mix;
S4, the raw material prepared in described step S3 is poured in twin screw extruder, with certain temperature, engine speed, feeding rotating speed production granulation;
S5, the raw particles produced dried after 2 hours with 60 DEG C pack again in described step S4.
Further, add described softening oil at twice according to the ratio of 50%:50% in described step S1 and stir, the interval time at every turn adding described softening oil is 15 minutes.
Further, in described step S2 by the static placement of mixture that obtains in described step S1 8 hours.
The present invention has following advantage and effect relative to prior art:
1) the thermoplastic elastomer raw material that the present invention proposes is made into high transparency earphone cord, on the basis with advantages such as snappiness, weathering resistance, fatigue resistances keeping thermoplastic elastomer raw material consistent, there is transparency further high, feel be soft, feature that smoothness is good.
2) manufacture method of the thermoplastic elastomer raw material for earphone cord of the present invention's proposition, technology realizes simple, and actual production processing is economical convenient, has good industrial applications prospect.
Accompanying drawing explanation
Fig. 1 is the process step figure of a kind of thermoplastic elastomer raw material manufacture method for earphone cord disclosed in the present invention.
Embodiment
For making object of the present invention, technical scheme and advantage clearly, clearly, developing simultaneously referring to accompanying drawing, the present invention is described in more detail for embodiment.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Embodiment one
Present embodiment discloses a kind of thermoplastic elastomer raw material, described thermoplastic elastomer raw material is for the manufacture of high-clarity earphone cord, and transparency is high, the soft smooth characteristic of feel to adopt the earphone cord of described thermoplastic elastomer raw material to have.
Its component comprises: hydrogenated styrene-butadiene block copolymer, softening oil, acrylic resin, propylene-based elastomeric and lubricating auxiliary agent, is characterized in that, with above-mentioned each composition weight sum for radix, its each component proportion is:
Above-mentioned hydrogenated styrene-butadiene block copolymer (styrene-butadienetriblockcopolymer, be called for short: SBS) be white loose column solid, the relative molecular mass of chemical property: SEBS has a significant impact performance, relative molecular mass is large, solution viscosity is large, and bonding strength is high.Monomer ratio of components in product is very important, and along with the ratio S/B of vinylbenzene with divinyl increases, Polymer Solution Viscosity diminishes, and tensile strength and hardness increase.Have excellent tensile strength, elasticity and electrical property, tension set is little, and it is good to subdue with rebound resilience, and surface friction is large.Resistance to ozone, oxygen, uviolizing performance and styrene-butadiene rubber(SBR) similar.Ventilation property is excellent.Above-mentioned softening oil adopts rubber softening oil, and because the mooney viscosity of rubber is higher, bad construction time mixing, needs to be heated to 150 degree or higher temperature, waste energy very much, so need to add softening oil to reduce mooney viscosity; That commonly uses at present has the material such as carbon five and terpine resin, paraffin, mineral oil, polyisoprene.Above-mentioned different materials is very cheap, so mineral oil all used by general tire, sealed strip all uses paraffin, tackiness agent carbon five terpine resin etc.; And polyisoprene is liquid, above-mentioned substance can be substituted, but price is partially expensive.
Above-mentioned acrylic resin is a kind of crystalline polymer of compound with regular structure, is the thermoplastic resin of light oyster white pellet, tasteless, nontoxic, light weight.Relative density is 0.90 ~ 0.91, is one the lightest in resins for universal use.Satisfactory mechanical property, resistance toheat is good, its fusing point is about 170 DEG C, without under External Force Acting, 150 DEG C indeformable, and chemical stability is good, acid-and base-resisting and organic solvent, do not have an effect with most of pharmaceutical chemicals (as nitrosonitric acid, chromic acid solution, halogen, benzene, tetracol phenixin, chloroform etc.), and absorb water hardly.Polypropylene shortcoming is easily aging, and become fragile during low temperature, low temperature impact strength is poor, but can improve with adding the methods such as additive, blended or copolymerization.
Acrylic resin can be processed by injection moulding, extrusion molding, blowing, the method such as to reel off raw silk from cocoons.The various electrical component of suitable for making, televisor and radio receiver shell, anti-corrosion pipeline, sheet material, trolley part, Turnover Box, braided packing bag, packaging film Strapping Material, various container, various clothing articles, artificial lawn etc.
Aforesaid propylene based elastomeric (English name propylene-basedelastomer) is called for short PBE, this propylene-based elastomeric, there is splendid elasticity, flexibility, toughness, flexibility, transparency, good with polyolefine melting, the features such as easy processing.Mainly strengthen toughness and the flexibility of goods in the application of transparent polypropylene goods, do not affect goods transparency simultaneously.The melting means of this propylene-based elastomeric is 20g/10min, higher melting means, and it well can be melted mutually with numerous injecting products, in actual application, obvious to goods toughening effect, effectively can reduce goods stress whitening phenomenon.
Because polymkeric substance has longer molecular chain and higher molecular weight, macromolecular structure makes its melt have higher viscosity, the resistance to flow of the course of processing is from two aspects: one is that mutual entanglement between macromole affects its flowing property, two is that surperficial generation of polymer melt and processor is rubbed, these frictions make fluidity of molten reduce, serious friction can make surface become coarse, lacks gloss or occurs flow liner etc.Can play the adding of above-mentioned lubricating auxiliary agent high lubricity, reduce friction, reduce the effects such as Interface Adhesion, be one of indispensable important component in modifying plastics and functional master batch preparation process.
Embodiment two
Refer to Fig. 1, Fig. 1 is the process step figure of the manufacture method of a kind of thermoplastic elastomer raw material for earphone cord disclosed in the present embodiment.The manufacture method of a kind of thermoplastic elastomer raw material shown in Fig. 1, for the production of the thermoplastic elastomer raw material manufactured for the manufacture of earphone cord, adopt the earphone cord of described thermoplastic elastomer raw material not only to have high-clarity but also there is the feature that feel exquisiteness is soft and weathering resistance is strong simultaneously.
As shown in Figure 1, described manufacture method comprises the following steps:
S1, described hydrogenated styrene-butadiene block copolymer to be stirred in high-speed stirring bucket, and be stirred to warm 60-70 degree Celsius, divide several times to add described softening oil according to a certain percentage to stir, finally add described softening oil and stir 10 minutes until fully blot;
S2, by the static placement of mixture that obtains in described step S1 some hours;
S3, the mixture obtained in described step S2 is added described acrylic resin, described propylene-based elastomeric and described lubricating auxiliary agent successively, mix;
S4, the raw material prepared in described step S3 is poured in twin screw extruder, with certain temperature, engine speed, feeding rotating speed production granulation;
S5, the raw particles produced dried after 2 hours with 60 DEG C pack again in described step S4.
Another preferred embodiment in, in described step S1 according to the ratio of 50%:50% add at twice described softening oil stir, the interval time at every turn adding described softening oil is 15 minutes.
Another preferred embodiment in, by the static placement of mixture that obtains in described step S1 8 hours in described step S2.
Whole preparation process must be clean by all and original equipment cleaning contacted, and must operation in independent factory building, prevents crossed contamination.
In sum, the thermoplastic elastomer raw material that the present invention proposes is made into high transparency earphone cord, on the basis with advantages such as snappiness, weathering resistance, fatigue resistances keeping thermoplastic elastomer raw material consistent, there is transparency further high, feel is soft, feature that smoothness is good.Meanwhile, the disclosed manufacture method for the thermoplastic elastomer raw material of earphone cord of above-described embodiment, technology realizes simple, and actual production processing is economical convenient, has good industrial applications prospect.
Above-described embodiment is the present invention's preferably embodiment; but embodiments of the present invention are not restricted to the described embodiments; change, the modification done under other any does not deviate from spirit of the present invention and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (7)
1. the thermoplastic elastomer raw material for earphone cord, its component comprises: hydrogenated styrene-butadiene block copolymer, softening oil, acrylic resin, propylene-based elastomeric and lubricating auxiliary agent, it is characterized in that, with above-mentioned each composition weight sum for radix, its each component proportion is:
2. a kind of thermoplastic elastomer raw material for earphone cord according to claim 1, is characterized in that, described thermoplastic elastomer raw material, for the manufacture of earphone cord, adopts that the earphone cord transparency of described thermoplastic elastomer raw material is high, feel is soft smooth.
3. a kind of thermoplastic elastomer raw material for earphone cord according to claim 1, it is characterized in that, described softening oil is rubber softening oil.
4. a kind of thermoplastic elastomer raw material for earphone cord according to claim 1, is characterized in that, described weather-proof auxiliary agent for promote earphone cord high lubricity, reduce friction, reduce Interface Adhesion.
5., according to the manufacture method of the arbitrary described a kind of thermoplastic elastomer raw material for earphone cord of Claims 1-4, it is characterized in that, described manufacture method comprises the following steps:
S1, described hydrogenated styrene-butadiene block copolymer to be stirred in high-speed stirring bucket, and be stirred to warm 60-70 degree Celsius, divide several times to add described softening oil according to a certain percentage to stir, finally add described softening oil and stir 10 minutes until fully blot;
S2, by the static placement of mixture that obtains in described step S1 some hours;
S3, the mixture obtained in described step S2 is added described acrylic resin, described propylene-based elastomeric and described lubricating auxiliary agent successively, mix;
S4, the raw material prepared in described step S3 is poured in twin screw extruder, with certain temperature, engine speed, feeding rotating speed production granulation;
S5, the raw particles produced dried after 2 hours with 60 DEG C pack again in described step S4.
6. the manufacture method of a kind of thermoplastic elastomer raw material for earphone cord according to claim 5, it is characterized in that, add described softening oil at twice according to the ratio of 50%:50% in described step S1 to stir, the interval time at every turn adding described softening oil is 15 minutes.
7. the manufacture method of a kind of thermoplastic elastomer raw material for earphone cord according to claim 5, is characterized in that, by the static placement of mixture that obtains in described step S1 8 hours in described step S2.
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| CN201610066407.3A CN105566833A (en) | 2016-01-29 | 2016-01-29 | Thermoplastic elastomer raw material for earphone cable and manufacturing method thereof |
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| CN201610066407.3A CN105566833A (en) | 2016-01-29 | 2016-01-29 | Thermoplastic elastomer raw material for earphone cable and manufacturing method thereof |
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Application publication date: 20160511 |