CN102558621B - Low-dynamic-multiplying-power and high-attenuation rubber material and preparation method thereof - Google Patents
Low-dynamic-multiplying-power and high-attenuation rubber material and preparation method thereof Download PDFInfo
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- CN102558621B CN102558621B CN201110433780.5A CN201110433780A CN102558621B CN 102558621 B CN102558621 B CN 102558621B CN 201110433780 A CN201110433780 A CN 201110433780A CN 102558621 B CN102558621 B CN 102558621B
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Abstract
The invention discloses a low-dynamic-multiplying-power and high-attenuation rubber material and a preparation method thereof. In a formula of the rubber material, trans 1,4 polyisoprene (TPI) is used as an assistant of the low-dynamic-multiplying-power and high-attenuation rubber material, and other assistants such as carbon black, a promoting agent, a vulcanizing agent, an anti-aging agent, an activating agent and an operating assistant are unchangeable. A selected rubber matrix is natural rubber (NR), and the low-dynamic-multiplying-power and high-attenuation rubber material is prepared by using the TPI as a functional rubber assistant through a common rubber processing process and equipment, and can be used in the field of rubber damping; and the damping effect of the low-dynamic-multiplying-power and high-attenuation rubber material is improved.
Description
Technical field
The present invention relates to a kind of elastomeric material, be specially a kind of low moving multiplying power, high attenuation rubber material, and the preparation method of this elastomeric material.
Technical background
For rubber damping product, conventionally the function that requires to there is support, damping and press down three aspects of shake, support function, for supporting the weight as object, for this reason, must guarantee to there is enough static spring constant Ks, shock-absorbing function, with respect to the vibrational frequency as object, there is enough low dynamic spring constant Kd, press down shake function, the amplification of conductivity, should have enough high Decay Rates when suppress there is as far as possible inevitable resonance, but this three conflicting mutual restriction often.For shock-absorbing function, Kd/Ks (moving multiplying power) is the smaller the better, for pressing down shake function, Decay Rate is more high better, adopt high Decay Rate elastomeric material to improve and press down shake effect, but for common elastomeric material, increase along with its Decay Rate, inevitably there is increasing phenomenon in its moving multiplying power, thereby affect its shock-absorbing function, along with to the improving constantly of the noise control and shockproof requirement of Motor vehicles, office automatic facility and household electronic products, the requirement of rubber damping product is also improved constantly.Therefore from improving this angle of yielding rubber performance, have low moving multiplying power concurrently and just become real requirement with high Decay Rate.
Can be large in Natural rubber, the homonymy of the identical atom of two electronegativity of cis isomerism in molecule, dipole moment is larger, and kindliness is better, and hysteresis loss is little, and elasticity is higher, make anti-vibration article and have low moving multiplying power, but Decay Rate is also lower simultaneously with it.Trans 1, 4 polyisoprene TPI atomic arrangement are more symmetrical, atom and atomic group that electronegativity is different come the same side, dipole moment is less, easily crystallization, kindliness is poor, it is also used with natural rubber by a certain percentage, the elastomeric material of preparation is after sulfuration, when being subject to external impacts or low-frequency vibration, elastomeric material will have higher Decay Rate, thereby can play and better press down shake effect, when high frequency is vibrated, trans 1, the crystalline texture of 4 polyisoprene TPI is destroyed, thereby improved the kindliness of molecule, the hysteresis loss of elastomeric material is reduced, thereby obtain low moving multiplying power.
Summary of the invention
The object of this invention is to provide a kind of low moving multiplying power, high attenuation rubber material and preparation method thereof, it is functional agent that the method adopts trans Isosorbide-5-Nitrae polyisoprene TPI, by common rubber processing processing unit, prepares the elastomeric material of low moving multiplying power, high decay.
The object of the invention is to be achieved through the following technical solutions:
Low moving multiplying power, a high attenuation rubber material, comprising:
A, 60-90 part natural rubber are as sill;
B, 10-40 part being are realized the trans Isosorbide-5-Nitrae polyisoprene TPI of the function of the low moving multiplying power of this elastomeric material, high decay;
C and other auxiliary agents.
Wherein, described rubber base-material is Natural rubber;
The trans Isosorbide-5-Nitrae polyisoprene TPI of described uncured is characterized as: trans content >=97%; Mooney viscosity 60-80; Tensile strength >=25MPa; Approximately 60 ℃ of fusing points.
Other described auxiliary agents comprise carbon black, promotor, vulcanizing agent, anti-aging agent, promoting agent and processing material, by the composition of following weight ratio:
Wherein, described carbon black is selected high wearable carbon black N330; Promotor is selected a kind of in methyl thiurams and thiazoles, is more preferably one or both combinations in TMTD and DM; Vulcanizing agent is sulphur; Anti-aging agent is selected quinoline and Diamines combination; As RD and 4010NA; Promoting agent is selected from zinc oxide and stearic acid, and processing material is aromatic hydrocarbon oil.
The preparation method of above-mentioned elastomeric material is as follows:
1) by trans Isosorbide-5-Nitrae polyisoprene TPI in general rubber preparing device, the 2-3 minute that plasticates in 60-100 ℃ of temperature range, then with Natural rubber blend;
2) by common refining gluing method, prepare rubber unvulcanizate;
3) rubber unvulcanizate is parked more than 8 hours, according to common rubber vulcanization process sulfuration.
The invention has the beneficial effects as follows: the present invention adopts trans Isosorbide-5-Nitrae polyisoprene TPI as the functional agent of rubber, adopt common rubber processing processing unit to process, prepared elastomeric material, Decay Rate is enhanced, and moving multiplying power is lowered, and complete processing is convenient and easy.
Embodiment:
Below in conjunction with specific embodiment, further set forth technical characterstic of the present invention.
Embodiment 1
90 parts of Natural rubbers, 10 parts of trans Isosorbide-5-Nitrae polyisoprene TPI, carbon black N33040 part, 2.5 parts, sulphur, 0.3 part of Vulcanization accelerator TMTD, 2.0 parts of altaxs, 1.5 parts of anti-aging agent RDs, 2.0 parts of antioxidant 4010NAs, 5.0 parts of promoting agents (zinc oxide), 2.0 parts of promoting agents (stearic acid SA), 5.0 parts of processing material aromatic hydrocarbon oil.
Manufacture craft comprises the steps and processing condition: the first step, by trans Isosorbide-5-Nitrae polyisoprene TPI in general rubber preparing device, the 2-3 minute that plasticates in 60-100 ℃ of temperature range, then with Natural rubber blend; Second step, prepares rubber unvulcanizate by common refining gluing method; The 3rd step, parks rubber unvulcanizate more than 8 hours, according to common rubber vulcanization process sulfuration.
The material manufacture craft of embodiment 2-6 is with embodiment 1.
Embodiment 2
80 parts of Natural rubbers, 20 parts of trans Isosorbide-5-Nitrae polyisoprene TPI, carbon black N33040 part, 2.5 parts, sulphur, 0.3 part of Vulcanization accelerator TMTD, 2.0 parts of altaxs, 1.5 parts of anti-aging agent RDs, 2.0 parts of antioxidant 4010NAs, 5.0 parts of promoting agents (zinc oxide), 2.0 parts of promoting agents (stearic acid SA), 5.0 parts of processing material aromatic hydrocarbon oil.
Embodiment 3
70 parts of Natural rubbers, 30 parts of trans Isosorbide-5-Nitrae polyisoprene TPI, carbon black N33040 part, 2.5 parts, sulphur, 0.3 part of Vulcanization accelerator TMTD, 2.0 parts of altaxs, 1.5 parts of anti-aging agent RDs, 2.0 parts of antioxidant 4010NAs, 5.0 parts of promoting agents (zinc oxide), 2.0 parts of promoting agents (stearic acid SA), 5.0 parts of processing material aromatic hydrocarbon oil.
Embodiment 4
60 parts of Natural rubbers, 40 parts of trans Isosorbide-5-Nitrae polyisoprene TPI, carbon black N33040 part, 2.5 parts, sulphur, 0.3 part of Vulcanization accelerator TMTD, 2.0 parts of altaxs, 1.5 parts of anti-aging agent RDs, 2.0 parts of antioxidant 4010NAs, 5.0 parts of promoting agents (zinc oxide), 2.0 parts of promoting agents (stearic acid SA), 5.0 parts of processing material aromatic hydrocarbon oil.
Embodiment 5
60 parts of Natural rubbers, 40 parts of trans Isosorbide-5-Nitrae polyisoprene TPI, carbon black N33040 part, 2.0 parts, sulphur, 0.2 part of Vulcanization accelerator TMTD, 2.5 parts of altaxs, 2.0 parts of anti-aging agent RDs, 1.5 parts of antioxidant 4010NAs, 5.0 parts of promoting agents (zinc oxide), 1.5 parts of promoting agents (stearic acid SA), 4.0 parts of processing material aromatic hydrocarbon oil.
Embodiment 6
80 parts of Natural rubbers, 20 parts of trans Isosorbide-5-Nitrae polyisoprene TPI, carbon black N33020 part, 2.0 parts, sulphur, 0.4 part of Vulcanization accelerator TMTD, 2.5 parts of altaxs, 2.0 parts of anti-aging agent RDs, 1.5 parts of antioxidant 4010NAs, 4.0 parts of promoting agents (zinc oxide), 2.0 parts of promoting agents (stearic acid SA), 5.0 parts of processing material aromatic hydrocarbon oil.
Comparative example 1
100 parts of Natural rubbers, carbon black N33040 part, 2.5 parts, sulphur, 0.3 part of Vulcanization accelerator TMTD, 2 parts of altaxs, 1.5 parts of anti-aging agent RDs, 2 parts of antioxidant 4010NAs, 5 parts of promoting agents (zinc oxide), 2 parts of promoting agents (stearic acid SA), 5 parts of processing material aromatic hydrocarbon oil.
The first step, by Natural rubber, in general rubber preparing device, 2-3 minute plasticates in 60-100 ℃ of temperature range; Second step, prepares rubber unvulcanizate by common refining gluing method; The 3rd step, parks rubber unvulcanizate more than 8 hours, according to common rubber vulcanization process sulfuration.
The material manufacture craft of comparative example 2-3 is with comparative example 1.
Comparative example 2
100 parts of Natural rubbers, carbon black N33040 part, carbon black N33040 part, 2.0 parts, sulphur, 0.2 part of Vulcanization accelerator TMTD, 2.5 parts of altaxs, 2.0 parts of anti-aging agent RDs, 1.5 parts of antioxidant 4010NAs, 5.0 parts of promoting agents (zinc oxide), 1.5 parts of promoting agents (stearic acid SA), 4.0 parts of processing material aromatic hydrocarbon oil.
Comparative example 3
100 parts of Natural rubbers, carbon black N33040 part, carbon black N33020 part, 2.0 parts, sulphur, 0.4 part of Vulcanization accelerator TMTD, 2.5 parts of altaxs, 2.0 parts of anti-aging agent RDs, 1.5 parts of antioxidant 4010NAs, 4.0 parts of promoting agents (zinc oxide), 2.0 parts of promoting agents (stearic acid SA), 5.0 parts of processing material aromatic hydrocarbon oil.
Performance evaluation
According to the formula batching in table 1, manufacture craft comprises the steps and processing condition: the first step, by trans Isosorbide-5-Nitrae polyisoprene TPI in general rubber preparing device, at the 60-100 ℃ of temperature range 2-3 minute that plasticates, then with Natural rubber blend; Second step, prepares rubber unvulcanizate by common refining gluing method; The 3rd step, parks rubber unvulcanizate more than 8 hours, and according to common rubber vulcanization process, in 150 ℃ of sulfurations 15 minutes, the physical and mechanical properties of gained cross-linked rubber was listed in the table below 2.
Table 1 embodiment 1-6 and comparative example 1-3 material prescription
Table 2 embodiment 1-6 and comparative example 1-3 material property
From table 2, in embodiment 1-4 and comparative example 1, embodiment 5 and comparative example 2 and embodiment 6 and comparative example 3, trans 1, after 4 polyisoprene TPI and Natural rubber are also used, with respect to the formula that does not add TPI, the hardness of cross-linked rubber increases, and tensile strength reduces, compression set is slightly improved, meanwhile, tg δ (Decay Rate) value raises at 60 ℃, and the Kd/Ks of 20Hz (moving multiplying power) reduces, and TPI addition is larger, moving multiplying power and pad value change more obvious.Illustrate that trans Isosorbide-5-Nitrae polyisoprene TPI and Natural rubber are also with making cross-linked rubber have low moving multiplying power, high Decay Rate feature.
Claims (3)
1. low moving multiplying power, a high attenuation rubber material, is characterized in that: the raw material by following weight part forms: NR60, TPI40, N33040, sulphur 2.5, TMTD0.3, DM2, RD1.5,4010NA2, zinc oxide 5, SA2, aromatic hydrocarbon oil 5;
Manufacture craft comprises the steps and processing condition: the first step, by trans Isosorbide-5-Nitrae polyisoprene TPI in general rubber preparing device, the 2-3 minute that plasticates in 60-100 ℃ of temperature range, then with Natural rubber blend; Second step, prepares rubber unvulcanizate by common refining gluing method; The 3rd step, parks rubber unvulcanizate more than 8 hours, according to common rubber vulcanization process sulfuration.
2. low moving multiplying power, a high attenuation rubber material, is characterized in that: the raw material by following weight part forms: NR60, TPI40, N33060, sulphur 2.0, TMTD0.2, DM2.5, RD2.0,4010NA1.5, zinc oxide 5, SA1.5, aromatic hydrocarbon oil 4;
Manufacture craft comprises the steps and processing condition: the first step, by trans Isosorbide-5-Nitrae polyisoprene TPI in general rubber preparing device, the 2-3 minute that plasticates in 60-100 ℃ of temperature range, then with Natural rubber blend; Second step, prepares rubber unvulcanizate by common refining gluing method; The 3rd step, parks rubber unvulcanizate more than 8 hours, according to common rubber vulcanization process sulfuration.
3. low moving multiplying power according to claim 1 and 2, high attenuation rubber material, is characterized in that: described trans Isosorbide-5-Nitrae polyisoprene TPI is characterized as: trans content >=97%; Mooney viscosity 60-80; Tensile strength >=25MPa; Approximately 60 ℃ of fusing points.
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| CN103951855B (en) * | 2014-04-02 | 2015-09-30 | 山东美晨科技股份有限公司 | A kind of TPI improves the rubber preparing raw material of abrasion and flex life |
| CN106146921A (en) * | 2015-04-28 | 2016-11-23 | 安徽华润仪表线缆有限公司 | A kind of natural rubber cushion blocking material and preparation method thereof |
| CN105348586A (en) * | 2015-12-16 | 2016-02-24 | 济南昊泽环保科技有限公司 | Deflection resistant damping rubber |
| CN105504378A (en) * | 2015-12-30 | 2016-04-20 | 中国兵器工业集团第五三研究所 | TPI modified natural rubber |
| CN106800678B (en) * | 2017-01-13 | 2018-09-11 | 湖北森鑫汽车零部件有限公司 | A kind of refining process for the fatigue-resisting rubber material that vehicle vibration damping element uses |
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| CN101121803A (en) * | 2007-07-27 | 2008-02-13 | 青岛科大方泰材料工程有限公司 | Method for preparing trans-isoprene complexes and its products and use |
| CN101550245A (en) * | 2009-05-04 | 2009-10-07 | 杭州中策橡胶有限公司 | Tire compound composition using trans isoprene rubber and application thereof |
| CN102382338A (en) * | 2011-09-02 | 2012-03-21 | 株洲时代新材料科技股份有限公司 | Isoprene rubber blend and its preparation method |
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| CN101121803A (en) * | 2007-07-27 | 2008-02-13 | 青岛科大方泰材料工程有限公司 | Method for preparing trans-isoprene complexes and its products and use |
| CN101550245A (en) * | 2009-05-04 | 2009-10-07 | 杭州中策橡胶有限公司 | Tire compound composition using trans isoprene rubber and application thereof |
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