CN104086883A - Mobile phone noise reduction cover material and preparation method thereof - Google Patents
Mobile phone noise reduction cover material and preparation method thereof Download PDFInfo
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- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
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- C08L2205/00—Polymer mixtures characterised by other features
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- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Abstract
The invention discloses a mobile phone noise reduction cover material which is prepared from the following components in parts by weight: 100-300 parts of thermoplastic resin, 60-70 parts of cenosphere,100-120 parts of elastomer, 0.1-10 parts of foaming agent, 0.5-8 parts of coupling agent, 0.5-10 parts of lubricant and 0.1-10 parts of antioxidant. The mobile phone noise reduction cover material is relatively light in weight and can be carried over; the material is excellent in physical and chemical property and mechanical property and can meet complex formation and structures; after being subjected to injection molding, the material can be used in match with conventional ordinary headsets, then no extra headsets need to be bought, and the cost of a product is lowered. The product is excellent in sound insulation effect, can effectively ensure the talking quality in a noisy environment, or can be used for making calls in a meeting room or library without walking outside the room or interfering other people.
Description
Technical field
The invention belongs to polymeric material field, relate to a kind of mobile phone silencer cover material and preparation method thereof.
Background technology
When people are in Library or during meeting room, when encountering urgent phone and need to answer, will have influence on other people study or work.If go to receive calls in each the outside, room of going to, have influence on equally others.Or in noisy environment, while receiving calls, the other side cannot catch the sound of oneself.
Therefore need to have mobile phone quieter material to solve the problems referred to above, existing invention is sound insulation respirator (CN 101184118B), and its shortcoming is to rely on elastic tape to be fixed on sound insulation on ear, and its soundproof effect is not good.The present invention relies on handgrip mobile phone sound-absorptive face mask to be fixed on mouth, and it is more firm that it is fixed, and the gap reserving is narrower and small.Adopt in addition sound insulation foam material, the efficiency of sound insulation is more increased, can effectively isolate the sound of sound source.
Summary of the invention
The object of the invention is to provides a kind of mobile phone silencer cover material and preparation method thereof for overcoming the defect of prior art.
For achieving the above object, the present invention adopts following technical scheme:
A mobile phone silencer cover material, is characterized in that: by the component that comprises following weight part, made:
100 ~ 300 parts of thermoplastic resins,
60 ~ 70 parts of cenospheres,
100 ~ 120 parts, elastomerics,
0.1 ~ 10 part of whipping agent,
0.5 ~ 8 part of coupling agent,
0.5 ~ 10 part of lubricant,
0.1 ~ 10 part, oxidation inhibitor.
Described thermoplastic resin is selected from one or more in acrylic resin, polyvinyl resin, polycarbonate resin, butadiene-styrene-acrylate copolymer, polyphenylene oxide resin, polystyrene, polyamide resin and polyester.
Described cenosphere has following feature: particle diameter is 0.1 ~ 400 micron, and true density is 0.4 ~ 2.5g/cm
3and tap density is 0.26 ~ 1.2g/cm
3.
Described elastomerics is selected from one or more of ethene-vinyl acetate copolymer, polyolefin elastomer, terpolymer EP rubber.
Described whipping agent is selected from N, N '-dimethyl-N, one or more in N '-dinitrosoterephthalamine, azo diaminobenzene, Diisopropyl azodicarboxylate and azide calcium.
Described coupling agent is selected from Y-chloropropyl triethoxysilane, vinyltrimethoxy silane, chain alkyl Trimethoxy silane, Y-(2,3-epoxy the third oxygen) one or more of propyl trimethoxy silicon.
Described lubricant is selected from one or more of barium stearate, calcium stearate, Zinic stearas, lauric acid diethyl amide.
Described oxidation inhibitor is selected from three (2,4-di-tert-butyl-phenyl) phosphorous acid ester, four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] one or more of pentaerythritol ester or β-(4-hydroxyl-3,5-di-tert-butyl-phenyl) positive octadecanol ester of propionic acid.
A preparation method for above-mentioned mobile phone silencer cover material, is characterized in that: the method comprises the following steps:
Take thermoplastic resin 100-300 part, elastomerics 100-120 part, whipping agent 0.1-10 part, coupling agent 0.5-8 part, lubricant 0.5-10 part, oxidation inhibitor 0.1-10 part is stirred after 3 ~ 5min in high-speed mixer, through measuring apparatus, sends in twin screw extruder; First venting port at twin screw extruder adds cenosphere 60-70 part, the conveying of screw rod, shearing and mixing under, material melting, compound, then through extruding, tie rod, pelletizing step, obtain mobile phone silencer cover material, finally this material is made silencing hood by injection moulding.
The main frame rotational frequency of described twin screw extruder is 20 ~ 50 hertz.
The raw material of the mobile phone quieter material producing by the present invention, then by injection moulding, make mobile phone quieter material face shield, coordinate the use of earphone with microphone that can buy on this market, can accomplish, in quietly occasion call, does not affect other people.
The present invention has the following advantages and beneficial effect:
Its weight of this mobile phone quieter material is lighter, can carry; This material possesses good physicochemical property, mechanical property, can meet complicated moulding and structure; Its by injection moulding after, can use with the collocation of existing common earphone, without the extra earphone of buying, reduced the cost of this product.The soundproof effect of this product fine, can, in noisy environment, effectively guarantee speech quality; Or quietly playing phone in meeting room, Library, outdoor without walking about, do not have influence on other people yet.
Embodiment
Below in conjunction with embodiment, the present invention is further illustrated, and unless otherwise indicated, the material using in embodiment is weight part.
embodiment 1
It is a kind of that for mobile phone silencer cover material, it is prepared by following methods:
Take 100 parts of atactic copolymerized polypropene resins, 120 parts of ethene-vinyl acetate copolymers, N, N '-dimethyl-N, 5 parts of N '-dinitrosoterephthalamines, 3 parts of Y-chloropropyl triethoxysilanes, 3 parts of barium stearates, 5 parts of three (2,4-di-tert-butyl-phenyl) phosphorous acid esters, in high-speed mixer, stir after 3min, through measuring apparatus, send in twin screw extruder; First venting port at twin screw extruder adds 0.1 micron of particle diameter, and true density is 0.4g/cm
3, tap density 0.26g/cm
360 parts of cenospheres, the conveying of screw rod, shearing and mixing under, material melting, compound, then through extruding, tie rod, pelletizing step, obtain mobile phone silencer cover material, this material is made silencing hood by injection moulding.
Described twin screw extruder is respectively 130 ℃ from spout to extrusion die temperature, and 140 ℃, 150 ℃, 160 ℃, 175 ℃, main frame rotational frequency is 20 hertz.
embodiment 2
A kind ofly for mobile phone silencer cover material, by following methods, prepared:
Take 30 parts of the butadiene-styrene-acrylate copolymers of butadiene content 50%, melting index is 70 parts of the PC resins of 9g/10min, 120 parts of ethene-vinyl acetate copolymers, 8 parts of Diisopropyl azodicarboxylates, 1 part of vinyltrimethoxy silane, 2 parts of calcium stearates, three (2,4-di-tert-butyl-phenyl) phosphorous acid ester is 8 parts, stirs after 3 ~ 5min in high-speed mixer, through measuring apparatus, sends in twin screw extruder; At first venting port of twin screw extruder, adding particle diameter is 50 microns, and true density is 0.6g/cm
3and tap density is 0.4g/cm
370 parts of hollow glass micropearls, the conveying of screw rod, shearing and mixing under, material melting, compound, then through extruding, tie rod, pelletizing step, obtain mobile phone silencer cover material, this material is made silencing hood by injection moulding.
Described twin screw extruder is respectively 220 ℃ from spout to extrusion die temperature, and 220 ℃, 230 ℃, 240 ℃, 240 ℃, main frame rotational frequency is 20 hertz.
embodiment 3
A kind of preparation method of above-mentioned mobile phone silencer cover material:
Take 200 parts of polyvinyl resins, 110 parts of terpolymer EP rubbers, 0.1 part of Diisopropyl azodicarboxylate, 8 parts of chain alkyl Trimethoxy silanes, 10 parts of Zinic stearass, 10 parts of the positive octadecanol esters of β-(4-hydroxyl-3,5-di-tert-butyl-phenyl) propionic acid, in high-speed mixer, stir after 4min, through measuring apparatus, send in twin screw extruder; At first venting port of twin screw extruder, adding particle diameter is 400 microns, and true density is 2.5g/cm
3and tap density is 1.2g/cm
370 parts of hollow glass micropearls, the conveying of screw rod, shearing and mixing under, material melting, compound, then through extruding, tie rod, pelletizing step, obtain mobile phone silencer cover material, this material is made silencing hood by injection moulding.
Described twin screw extruder is respectively 160 ℃ from spout to extrusion die temperature, and 170 ℃, 190 ℃, 200 ℃, 220 ℃, main frame rotational frequency is 30 hertz.
embodiment 4
A kind of preparation method of above-mentioned mobile phone silencer cover material:
Take 200 parts of polycaprolactams, 100 parts of terpolymer EP rubbers, 3 parts of azide calcium, Y-(2,3-epoxy the third oxygen) propyl trimethoxy silicon is 0.5 part, 0.5 part of lauric acid diethyl amide, four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] 2 parts of pentaerythritol esters, in high-speed mixer, stir after 5min, through measuring apparatus, send in twin screw extruder; At first venting port of twin screw extruder, adding particle diameter is 3 microns, and true density is 2.0g/cm
3and tap density is 0.8g/cm
360 parts of hollow glass micropearls, the conveying of screw rod, shearing and mixing under, material melting, compound, then through extruding, tie rod, pelletizing step, obtain mobile phone silencer cover material, this material is made silencing hood by injection moulding.
Described twin screw extruder is respectively 220 ℃ from spout to extrusion die temperature, and 230 ℃, 230 ℃, 240 ℃, 250 ℃, main frame rotational frequency is 50 hertz.
embodiment 5
A kind ofly for mobile phone silencer cover material, by following methods, prepared:
Take limiting viscosity and be 80 parts of the polyphenylene oxide resins of 0.4dl/g, melting index is 160 parts of the polystyrene resins of 18g/10min, 120 parts of ethene-vinyl acetate copolymers, 8 parts of Diisopropyl azodicarboxylates, 1 part of vinyltrimethoxy silane, 2 parts of calcium stearates, three (2,4-di-tert-butyl-phenyl) phosphorous acid ester is 8 parts, stirs after 3 ~ 5min in high-speed mixer, through measuring apparatus, sends in twin screw extruder; At first venting port of twin screw extruder, adding particle diameter is 50 microns, and true density is 0.6g/cm
3and tap density is 0.4g/cm
370 parts of hollow glass micropearls, the conveying of screw rod, shearing and mixing under, material melting, compound, then through extruding, tie rod, pelletizing step, obtain mobile phone silencer cover material, this material is made silencing hood by injection moulding.
Described twin screw extruder is respectively 210 ℃ from spout to extrusion die temperature, and 220 ℃, 240 ℃, 240 ℃, 240 ℃, main frame rotational frequency is 20 hertz.
embodiment 6
A kind ofly for mobile phone silencer cover material, by following methods, prepared:
Take 300 parts of polyethylene terephthalate resin (vibrin a kind of), 100 parts of polyolefin elastomers, N, N '-dimethyl-N, 10 parts of N '-dinitrosoterephthalamines, 6 parts of chain alkyl Trimethoxy silanes, 3 parts of barium stearates, 0.1 part of the positive octadecanol ester of β-(4-hydroxyl-3,5-di-tert-butyl-phenyl) propionic acid, in high-speed mixer, stir after 3 ~ 5min, through measuring apparatus, send in twin screw extruder; At first venting port of twin screw extruder, adding particle diameter is 300 microns, and true density is 0.4g/cm
3and tap density is 0.26g/cm
360 parts of hollow glass micropearls, the conveying of screw rod, shearing and mixing under, material melting, compound, then through extruding, tie rod, pelletizing step, obtain mobile phone silencer cover material, this material is made silencing hood by injection moulding.
Described twin screw extruder is respectively 240 ℃ from spout to extrusion die temperature, and 250 ℃, 270 ℃, 280 ℃, 290 ℃, main frame rotational frequency is 20 hertz.
To adopting mobile phone silencer cover material and this product making of obtaining in embodiment to carry out performance test, test result is in Table 1:
Wherein, the testing method of sample and standard are as follows:
Shore hardness: use durometer, sclerometer is tested Shore hardnes figure according to TM3T2400.4.1.13.
Tensile strength: use electronic tension tester, drawing machine is according to GM2212M3.1.3 test tensile strength.
Elongation at break: use electronic tension tester, drawing machine is tested elongation at break according to GM2212M3.1.4.
Tear strength: use electronic test machine, according to GM2212M3.1.5 test tear strength.
Bidirectional size velocity of variation: use high-temperature test chamber, according to the bidirectional size velocity of variation of 110 ℃ of EDS-T-7604 tests.
Sound-proofing based on JIS A1416 standard test sound-proof material, and as the index of sound-proofing.Cutting off the foursquare sound-proof material installation window that a length of side 600mm is set on the door of source of sound chamber and reverberation chamber, sound-proof material is mounted thereon, it is sealed completely.Then, by the sound source of sound source room, sent the sound of 90dB, with phonometer, in reverberation chamber, measure volume A.
At sound-proof material, do not install with sound-proof material is installed on window, but make this window portion in completely unlimited state, according to main points same as described above, measure volume B, based on following formula, calculate sound-proofing.
Sound-proofing (dB)=(volume B) – (volume A)
| Test subject | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Embodiment 6 |
| Shore hardness | 77 | 78 | 78 | 76 | 79 | 77 |
| Tensile strength KPa | 3270 | 5240 | 2850 | 4240 | 6220 | 4830 |
| Elongation at break % | 180 | 176 | 130 | 115 | 150 | 90 |
| Tear strength N/m | 26240 | 26750 | 26000 | 26400 | 26580 | 26360 |
| Bidirectional size velocity of variation % | ? | ? | ? | ? | ? | ? |
| Directions X | -0.23 | -0.18 | 0.00 | -0.18 | -0.26 | -0.14 |
| Y-direction | -3.54 | -3.92 | -4.18 | -3.92 | -3.48 | -3.63 |
| Sound-proofing (dB) | 9.3 | 13.5 | 5.7 | 8.7 | 9.6 | 9.8 |
Can find out, when elastomeric ratio increases, the elongation at break of material improves, and the ratio of embodiment 1 is maximum, and its elongation at break 180% is also maximum.In addition, when the ratio of whipping agent is high, the sound-proofing properties of its material is better.
The above-mentioned description to embodiment is can understand and apply the invention for ease of those skilled in the art.Person skilled in the art obviously can easily make various modifications to these embodiment, and General Principle described herein is applied in other embodiment and needn't passes through performing creative labour.Therefore, the invention is not restricted to the embodiment here, those skilled in the art are according to announcement of the present invention, and not departing from the improvement that category of the present invention makes and revise all should be within protection scope of the present invention.
Claims (10)
1. a mobile phone silencer cover material, is characterized in that: by the component that comprises following weight part, made:
100 ~ 300 parts of thermoplastic resins,
60 ~ 70 parts of cenospheres,
100 ~ 120 parts, elastomerics,
0.1 ~ 10 part of whipping agent,
0.5 ~ 8 part of coupling agent,
0.5 ~ 10 part of lubricant,
0.1 ~ 10 part, oxidation inhibitor.
2. mobile phone silencer cover material according to claim 1, is characterized in that: described thermoplastic resin is selected from one or more of acrylic resin, polyvinyl resin, polycarbonate resin, butadiene-styrene-acrylate copolymer, polyphenylene oxide resin, polystyrene resin, polyamide resin and vibrin.
3. mobile phone silencer cover material according to claim 1, is characterized in that: described cenosphere has following feature: particle diameter is 0.1 ~ 400 micron, and true density is 0.4 ~ 2.5g/cm
3and tap density is 0.26 ~ 1.2g/cm
3.
4. mobile phone silencer cover material according to claim 1, is characterized in that: described elastomerics is selected from one or more of ethene-vinyl acetate copolymer, polyolefin elastomer, terpolymer EP rubber.
5. mobile phone silencer cover material according to claim 1, is characterized in that: described whipping agent is selected from N, N '-dimethyl-N, one or more in N '-dinitrosoterephthalamine, azo diaminobenzene, Diisopropyl azodicarboxylate and azide calcium.
6. mobile phone silencer cover material according to claim 1, it is characterized in that: described coupling agent is selected from Y-chloropropyl triethoxysilane, vinyltrimethoxy silane, chain alkyl Trimethoxy silane, Y-(2 3-epoxy the third oxygen) one or more of propyl trimethoxy silicon.
7. mobile phone silencer cover material according to claim 1, is characterized in that: described lubricant is selected from one or more of barium stearate, calcium stearate, Zinic stearas, lauric acid diethyl amide.
8. mobile phone silencer cover material according to claim 1, it is characterized in that: described oxidation inhibitor is selected from three (2,4-di-tert-butyl-phenyl) phosphorous acid ester, four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] one or more of pentaerythritol ester or β-(4-hydroxyl-3,5-di-tert-butyl-phenyl) positive octadecanol ester of propionic acid.
9. a preparation method for arbitrary described mobile phone silencer cover material in claim 1-8, is characterized in that: the method comprises the following steps:
Take thermoplastic resin 100-300 part, elastomerics 100-120 part, whipping agent 0.1-10 part, coupling agent 0.5-8 part, lubricant 0.5-10 part, oxidation inhibitor 0.1-10 part is stirred after 3 ~ 5min in high-speed mixer, through measuring apparatus, sends in twin screw extruder; First venting port at twin screw extruder adds cenosphere 60-70 part, the conveying of screw rod, shearing and mixing under, material melting, compound, then through extruding, tie rod, pelletizing step, obtain mobile phone silencer cover material.
10. the preparation method of mobile phone silencer cover material according to claim 9, is characterized in that: the main frame rotational frequency of described twin screw extruder is 20 ~ 50 hertz.
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| CN104448815A (en) * | 2014-11-27 | 2015-03-25 | 上海金发科技发展有限公司 | Thermoplastic resin composition and preparation method thereof |
| CN104774380A (en) * | 2015-03-26 | 2015-07-15 | 安徽海纳川塑业科技有限公司 | Corrosion-resistant and anti-impact polypropylene composite material |
| CN107474326A (en) * | 2017-08-09 | 2017-12-15 | 浙江久运汽车零部件有限公司 | A kind of modified natural rubber solid tyre |
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| CN109206737A (en) * | 2017-07-05 | 2019-01-15 | 松下知识产权经营株式会社 | Polyolefine resin composition and using its polyolefin resin formed body and use its electric dust collector |
| JP2019530778A (en) * | 2016-09-30 | 2019-10-24 | シーカ テクノロジー アクチェンゲゼルシャフト | Thermoplastic foam with simultaneous expansion and curing |
| CN110894350A (en) * | 2019-12-23 | 2020-03-20 | 常州华航包装材料有限公司 | Novel foaming material and production process thereof |
| CN111073154A (en) * | 2019-12-13 | 2020-04-28 | 青岛海尔新材料研发有限公司 | Resin composite material with abnormal sound prevention function and preparation method thereof |
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| GB2587330A (en) * | 2019-09-12 | 2021-03-31 | Design Blue Ltd | Protective cover for a 5G wireless telecommunications device and methods for reducing signal attenuation using the same |
| CN114672093A (en) * | 2022-03-30 | 2022-06-28 | 金发科技股份有限公司 | Resin material with low density and high sound insulation, and preparation method and application thereof |
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| CN104448815A (en) * | 2014-11-27 | 2015-03-25 | 上海金发科技发展有限公司 | Thermoplastic resin composition and preparation method thereof |
| CN104774380A (en) * | 2015-03-26 | 2015-07-15 | 安徽海纳川塑业科技有限公司 | Corrosion-resistant and anti-impact polypropylene composite material |
| JP2019530778A (en) * | 2016-09-30 | 2019-10-24 | シーカ テクノロジー アクチェンゲゼルシャフト | Thermoplastic foam with simultaneous expansion and curing |
| JP7084384B2 (en) | 2016-09-30 | 2022-06-14 | シーカ テクノロジー アクチェンゲゼルシャフト | Thermoplastic foam that expands and cures simultaneously |
| CN109206737A (en) * | 2017-07-05 | 2019-01-15 | 松下知识产权经营株式会社 | Polyolefine resin composition and using its polyolefin resin formed body and use its electric dust collector |
| CN107474326A (en) * | 2017-08-09 | 2017-12-15 | 浙江久运汽车零部件有限公司 | A kind of modified natural rubber solid tyre |
| CN107474339A (en) * | 2017-08-09 | 2017-12-15 | 浙江久运汽车零部件有限公司 | A kind of coaster high resiliency solid tyre |
| GB2587330A (en) * | 2019-09-12 | 2021-03-31 | Design Blue Ltd | Protective cover for a 5G wireless telecommunications device and methods for reducing signal attenuation using the same |
| GB2587330B (en) * | 2019-09-12 | 2024-04-10 | Design Blue Ltd | Protective cover for a 5G wireless telecommunications device and methods for reducing signal attenuation using the same |
| CN111073154A (en) * | 2019-12-13 | 2020-04-28 | 青岛海尔新材料研发有限公司 | Resin composite material with abnormal sound prevention function and preparation method thereof |
| CN111073154B (en) * | 2019-12-13 | 2022-07-15 | 青岛海纳新材料有限公司 | Resin composite material with abnormal sound prevention function and preparation method thereof |
| CN110894350A (en) * | 2019-12-23 | 2020-03-20 | 常州华航包装材料有限公司 | Novel foaming material and production process thereof |
| CN111234390A (en) * | 2020-02-17 | 2020-06-05 | 宁国市千洪电子有限公司 | Shock-absorbing multilayer conductive foam and production and processing method thereof |
| CN114672093A (en) * | 2022-03-30 | 2022-06-28 | 金发科技股份有限公司 | Resin material with low density and high sound insulation, and preparation method and application thereof |
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