CN104151636B - A kind of high damping properties elastomeric material and preparation method - Google Patents
A kind of high damping properties elastomeric material and preparation method Download PDFInfo
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- CN104151636B CN104151636B CN201410378563.4A CN201410378563A CN104151636B CN 104151636 B CN104151636 B CN 104151636B CN 201410378563 A CN201410378563 A CN 201410378563A CN 104151636 B CN104151636 B CN 104151636B
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Abstract
The present invention relates to a kind of high damping properties elastomeric material and preparation method, comprise the steps: in advance slip ring material to be carried out crosslinking reaction; Then natural rubber, epoxy natural rubber, slip ring material and vulcanizing agent are made rubber unvulcanizate; Leave standstill, sulfuration under certain condition, obtained wide temperature zone high damping elastomeric material. The present invention take natural rubber as matrix, taking the ring material that slides as high damping phase, take epoxy natural rubber as interfacial compatibilizer, makes the high-damping rubber material obtained increase substantially its damping capacity in normal temperature district what have a good mechanical property simultaneously. The high damping properties elastomeric material that the present invention obtains especially is applicable to being applied to the shock insulation rubber bearing of antidetonation.
Description
Technical field
The invention belongs to high-damping rubber technical field, particularly relate to a kind of high damping slip ring elastomerics/native rubber composite material and preparation technology thereof; And the application on the rubber lamination of shock insulation rubber bearing.
Background technology
Earthquake is a kind of sudden, frequency height, it is difficult to the natural disaster of prediction, very harmful to human society. The earthquake number of times that the whole world can measure every year on average is more than 5,000,000 times, and the wherein earthquake of more than 6 grades 100��200 times, the earthquake of more than 7 grades on average has 17 times, average 11 times of the earthquake of more than 8 grades. The secondary disaster of earthquake and initiation thereof causes a large amount of collapse and damage of buildings and structures and inner facility thereof, makes the lives and properties of the mankind cause massive losses. At present, earthquake prediction is still in the exploratory stage, even if accurately having forecast, earthquake also still can not be avoided to the destruction of engineering, facility etc. and to avoid the injures and deaths of personnel and the loss of economic property completely. Therefore, it is to increase the antidetonation ability of buildings resists the very important approach of earthquake destruction.
Shock isolating pedestal is as the critical elements of " base isolation ", its main function is supporting buildings all wts on the one hand, it is the kinematic behavior of change structure system on the other hand, mainly extends the natural period of vibration of buildings, thus effectively reduce the earthquake reaction of buildings. Shock isolating pedestal also wants to bear the relative horizontal displacement of expection between basis and superstructure, can not lose again its supporting capacity simultaneously. Owing to rubber earthquake isolation support effectiveness in vibration suppression is obviously more excellent than traditional firm method effectiveness in vibration suppression, therefore become the preferred option of the important building of world today's high anti-seismic, shockproof requirement.
The common rubber layer every shake laminated rubber bases selects natural rubber, and owing to natural rubber macromolecular chain is submissive, during distortion, intermolecular internal friction is little, and dissipation factor is little, seriously have impact on its damping. Therefore, the bearing of natural rubber material can increase the flexibility of structure, reduces the earthquake reaction of bridge construction, but seismic wave of can not well decaying, control texture displacement. Lead rubber bearing realizes, by the shearing strain of plumbous core, the function absorbing dissipates vibration energy, but the automatic recovery ability of this system reduces greatly, and narrower every shake frequency band, can not realize the seismic wave to multiple frequency and all have effective isolating affection. Prepare high-damping rubber material and replace existing natural rubber, not only can effectively improve the comprehensive shake-proof ability of rubber bearing, and can plumbous core technology.
As a kind of new ideas macromolecular material, the appearance of slip ring material becomes the research focus of crosslinked polymer material. Its appearance is derived from supramolecular chemistry field to the research of poly-wheel alkane. So-called slip ring material refers to: select suitable linking agent, and the molecule ��-CD that difference is gathered wheel alkane upper annular is cross-linked, and this kind of colloidal materials obtained presents the crosslinked topological framework of " 8 " word. The most outstanding feature of this kind of material is that cross-linking set can slide freely along molecular shaft, thereby produces pulley effect (Pulleyeffect). Therefore, when slip ring material is subject to external force effect, cross-linking set can occur to slide along axle chain molecule until arriving best position, the tension force that macromolecular chain is subject to can be balanced, now all polymer chains all participate in undertaking external force, material internal stress is relaxed, and shows very strong expansion and stretch capability, is equivalent to serve the effect of pulley. Therefore, although this kind of material does not produce stretching crystallization, but easily occurring to strain orientation due to molecular chain, and stress is easy to dispersion, tensile strength is not low, it is possible to reach 8 more than MPa. Very importantly, compared with conventional elastomers material, this material has soft, low compression set (1%) characteristic, and shows high damping properties under wide temperature range and wide frequency ranges. When adding in rubber matrix as functional modifier, it is possible to significantly improve the elongation at break of material. These characteristics may be very helpful to the performance improving shock isolating pedestal elastomeric material.
Summary of the invention
The present invention is directed to above problem, it is proposed to the preparation method of a kind of high-damping rubber matrix material, select and there is stretching crystallization from the natural rubber of reinforcing property as rubber matrix phase, support the high strength of shock isolating pedestal rubber; Adopt slip ring material as high damping phase, improve the high damping properties of elastomeric material; Formula system adds the epoxy natural rubber of certain part number, improves the consistency between natural rubber matrix and slip ring material as interfacial compatibilizer. Can be prepared by above method and to have high damping properties and the excellent high damping shock isolating pedestal elastomeric material of physical and mechanical properties. It is characterized in that: specifically consist of with massfraction note:
More than in formula, slip ring material selects good S1000, M1000 model of damping, it is preferable that S1000 model. The crosslinking reaction condition of slip ring material is temperature: 150-180 DEG C, the reaction times: 3-5 hour. Mating because this slip ring material cannot reach with the crosslinked condition of natural rubber, so in advance this slip ring material being cross-linked natural rubber based is external, and then blended adding in rubber. By the mode of mechanical blending, slip ring material can be evenly spread in rubber matrix with the phase size size of 2-3 micron level completely.
More than in formula, epoxy natural rubber plays interfacial compatibilizer, improves the interface compatibility between natural rubber matrix and slip ring material. The weight part selecting epoxy natural rubber in the present invention is 5��30 parts, it is preferable that mass parts is 20 parts; The epoxy content of epoxy natural rubber is 25%��50%, it is preferable that epoxy content is 35%-40%.
The additional technical feature of the present invention is: slip ring material enters to be carried out crosslinking reaction before rubber blended, and crosslinking reaction condition is crosslinking temperature: 150-180 DEG C of crosslinking time: 3-5 hour; First by matrix natural rubber, interfacial compatibilizer epoxy natural rubber time mixing, cross roller in two roller mill room temperature and plasticate, make it evenly mixing; Add activator, promotor, anti-aging agent successively, after thin-pass, add the slip ring material being cross-linked, obtain the rubber unvulcanizate of Natural rubber, epoxy natural rubber ENR, slip ring material; Finally add linking agent sulphur, bottom sheet after thin-pass, make unvulcanized film; Curability test is carried out, it is determined that its sulfurizing time T90 in without rotor vulkameter; Sulfuration in vulcanizing press: curing temperature is set as 143 DEG C, pressure setting is 10��15MPa, and the time is T90+3 minute.
The useful effect of the present invention
The natural rubber that the present invention has stretching crystallization property by selecting is as matrix, there is the high damping properties rubber composite material that the slip ring material of high damping properties is prepared mutually as high damping, can being greater than in the temperature range of 60 DEG C, particularly have in the normal temperature district of 0-20 DEG C the ratio of damping of 0.3, meet defining of high-damping rubber material; Its tensile strength (non-reinforcement) reaches more than 12MPa, and tensile yield reaches more than 700%, and temperature limit of brittleness is below-40 DEG C. The performance of this matrix material reaches national standard to the requirement of the physical and mechanical properties of shock isolating pedestal elastomeric material, and relative to pure natural rubber, there is lower stress at definite elongation, illustrate that this matrix material has the characteristic of low-stress gross distortion, meet the requirement of the high lateral flexibility of shock isolating pedestal.
Accompanying drawing explanation
The damping curve of Fig. 1 comparative example 1 and embodiment 1,2,3 elastomeric material in one's power
The damping curve of Fig. 2 comparative example 1 and embodiment 4,5,6 elastomeric material in one's power
The damping curve of Fig. 3 comparative example 1 and embodiment 5,7,8 elastomeric material in one's power
The damping curve of Fig. 4 comparative example 1 and embodiment 3,9 elastomeric material in one's power
Embodiment
Below by embodiment, the present invention will be further described, but the invention is not restricted to these embodiments. Also comprise those skilled in the art in the open scope of the present invention, the apparent change made. In embodiment, slip ring material used is S1000, M1000 but is not limited to this; Weight part number 5-30 part of epoxy natural rubber, epoxy content is 35%��50% but is not limited to this. The natural rubber used in example is smoke sheet rubber, and the epoxy natural rubber used is provided by processing of farm products institute of torrid zone Academy of Agricultural Sciences of China, and the slip ring material used is provided by Tianjin Wei Rui supramolecule Science and Technology Ltd..
Comparative example 1 is pure natural rubber blank sample; Embodiment 1,2,3 is natural rubber/epoxy natural rubber (35%) is under 95/5 weight part, the variable of slip ring material S100030/40/50 weight part; Embodiment 4,5,6 is for, under slip ring material S100040 weight part, natural rubber/epoxy natural rubber (35%) is the variable of 90/10,80/20,70/30 weight part; Embodiment 5,7,8 is slip ring material S100040 weight part, and natural rubber/epoxy natural rubber is under 80/20 weight part, the variable of epoxy natural rubber epoxy content 35%, 40%, 50%; Embodiment 3,9 is natural rubber/epoxy natural rubber (35%) is 95/5 weight part, under slip ring material 40 weight part, and the variable of S1000 and M1000 model;
Comparative example 1
At 30 DEG C, natural rubber 100g is plasticated on a mill until 1 minute, then bag roller; Add activator zinc oxide 3g successively, activator stearic acid 1g, accelerant N-cyclohexyl-2-benzothiazole sulfonamide (is called for short: short CZ) 0.5g, promotor 2,2'-dithio-bis-benzothiazole (being called for short: short DM) 0.5g, promotor tetramethyl thiuram disulfide (is called for short: short TMTD) 0.2g, anti-aging agent N-sec.-propyl-N '-diphenyl-para-phenylene diamine (is called for short: anti-4010NA), sulphur 1.5g is evenly mixing for linking agent, is prepared into rubber unvulcanizate; Leaving standstill after 8 hours, at temperature 143 DEG C, sulfuration 5 minutes on vulcanizing press, can obtain natural rubber film.
Embodiment 1
At 30 DEG C, natural rubber 95g, epoxy natural rubber (epoxy content 35%) 5g are plasticated 1 minute on a mill until, then bag roller; Add activator zinc oxide 3g successively, activator stearic acid 1g, accelerant CZ 0.5g, altax 0.5g, Vulcanization accelerator TMTD 0.2g, antioxidant 4010NA 2g; It is incorporated at 175 DEG C the crosslinking reaction slip ring material S100030g of 3 hours after thin-pass, finally adds linking agent sulphur 1.5g evenly mixing, be prepared into rubber unvulcanizate; Leaving standstill after 8 hours, at temperature 143 DEG C, sulfuration 6 minutes on vulcanizing press, can obtain high damping slip ring/native rubber composite material.
Embodiment 2
At 30 DEG C, natural rubber 95g, epoxy natural rubber (epoxy content 35%) 5g are plasticated 1 minute on a mill until, then bag roller; Add activator zinc oxide 3g successively, activator stearic acid 1g, accelerant CZ 0.5g, altax 0.5g, Vulcanization accelerator TMTD 0.2g, antioxidant 4010NA 2g; It is incorporated at 175 DEG C the crosslinking reaction slip ring material S100040g of 3 hours after thin-pass, finally adds linking agent sulphur 1.5g evenly mixing, be prepared into rubber unvulcanizate; Leaving standstill after 8 hours, at temperature 143 DEG C, sulfuration 6.5 minutes on vulcanizing press, can obtain high damping slip ring/native rubber composite material.
Embodiment 3
At 30 DEG C, natural rubber 95g, epoxy natural rubber (epoxy content 35%) 5g are plasticated 1 minute on a mill until, then bag roller; Add activator zinc oxide 3g successively, activator stearic acid 1g, accelerant CZ 0.5g, altax 0.5g, Vulcanization accelerator TMTD 0.2g, antioxidant 4010NA 2g; It is incorporated at 175 DEG C the crosslinking reaction slip ring material S100050g of 3 hours after thin-pass, finally adds linking agent sulphur 1.5g evenly mixing, be prepared into rubber unvulcanizate; Leaving standstill after 8 hours, at temperature 143 DEG C, sulfuration 7 minutes on vulcanizing press, can obtain high damping slip ring/native rubber composite material.
Embodiment 4
At 30 DEG C, natural rubber 90g, epoxy natural rubber (epoxy content 35%) 10g are plasticated 1 minute on a mill until, then bag roller; Add activator zinc oxide 3g successively, activator stearic acid 1g, accelerant CZ 0.5g, altax 0.5g, Vulcanization accelerator TMTD 0.2g, antioxidant 4010NA 2g; It is incorporated at 175 DEG C the crosslinking reaction slip ring material S100040g of 3 hours after thin-pass, finally adds linking agent sulphur 1.5g evenly mixing, be prepared into rubber unvulcanizate; Leaving standstill after 8 hours, at temperature 143 DEG C, sulfuration 6.5 minutes on vulcanizing press, can obtain high damping slip ring/native rubber composite material.
Embodiment 5
At 30 DEG C, natural rubber 80g, epoxy natural rubber (epoxy content 35%) 20g are plasticated 1 minute on a mill until, then bag roller; Add activator zinc oxide 3g successively, activator stearic acid 1g, accelerant CZ 0.5g, altax 0.5g, Vulcanization accelerator TMTD 0.2g, antioxidant 4010NA 2g; It is incorporated at 175 DEG C the crosslinking reaction slip ring material S100040g of 3 hours after thin-pass, finally adds linking agent sulphur 1.5g evenly mixing, be prepared into rubber unvulcanizate; Leaving standstill after 8 hours, at temperature 143 DEG C, sulfuration 6.5 minutes on vulcanizing press, can obtain high damping slip ring/native rubber composite material.
Embodiment 6
At 30 DEG C, natural rubber 70g, epoxy natural rubber (epoxy content 35%) 30g are plasticated 1 minute on a mill until, then bag roller; Add activator zinc oxide 3g successively, activator stearic acid 1g, accelerant CZ 0.5g, altax 0.5g, Vulcanization accelerator TMTD 0.2g, antioxidant 4010NA 2g; It is incorporated at 175 DEG C the crosslinking reaction slip ring material S100040g of 3 hours after thin-pass, finally adds linking agent sulphur 1.5g evenly mixing, be prepared into rubber unvulcanizate; Leaving standstill after 8 hours, at temperature 143 DEG C, sulfuration 6.5 minutes on vulcanizing press, can obtain high damping slip ring/native rubber composite material.
Embodiment 7
At 30 DEG C, natural rubber 70g, epoxy natural rubber (epoxy content 40%) 20g are plasticated 1 minute on a mill until, then bag roller; Add activator zinc oxide 3g successively, activator stearic acid 1g, accelerant CZ 0.5g, altax 0.5g, Vulcanization accelerator TMTD 0.2g, antioxidant 4010NA 2g; It is incorporated at 175 DEG C the crosslinking reaction slip ring material S100040g of 3 hours after thin-pass, finally adds linking agent sulphur 1.5g evenly mixing, be prepared into rubber unvulcanizate; Leaving standstill after 8 hours, at temperature 143 DEG C, sulfuration 6.5 minutes on vulcanizing press, can obtain high damping slip ring/native rubber composite material.
Embodiment 8
At 30 DEG C, natural rubber 70g, epoxy natural rubber (epoxy content 50%) 20g are plasticated 1 minute on a mill until, then bag roller; Add activator zinc oxide 3g successively, activator stearic acid 1g, accelerant CZ 0.5g, altax 0.5g, Vulcanization accelerator TMTD 0.2g, antioxidant 4010NA 2g; It is incorporated at 175 DEG C the crosslinking reaction slip ring material S100040g of 3 hours after thin-pass, finally adds linking agent sulphur 1.5g evenly mixing, be prepared into rubber unvulcanizate; Leaving standstill after 8 hours, at temperature 143 DEG C, sulfuration 6.5 minutes on vulcanizing press, can obtain high damping slip ring/native rubber composite material.
Embodiment 9
At 30 DEG C, natural rubber 95g, epoxy natural rubber (epoxy content 35%) 5g are plasticated 1 minute on a mill until, then bag roller; Add activator zinc oxide 3g successively, activator stearic acid 1g, accelerant CZ 0.5g, altax 0.5g, Vulcanization accelerator TMTD 0.2g, antioxidant 4010NA 2g; It is incorporated at 175 DEG C the crosslinking reaction slip ring material M100050g of 3 hours after thin-pass, finally adds linking agent sulphur 1.5g evenly mixing, be prepared into rubber unvulcanizate; Leaving standstill after 8 hours, at temperature 143 DEG C, sulfuration 7 minutes on vulcanizing press, can obtain high damping slip ring/native rubber composite material.
Table 1: comparative example 1 and embodiment 1,2,3 elastomeric material performance table in one's power
The damping curve of Fig. 1 comparative example 1 and embodiment 1,2,3 elastomeric material in one's power
Table 2 comparative example 1 and embodiment 4,5,6 elastomeric material performance table in one's power
The damping curve of Fig. 2 comparative example 1 and embodiment 4,5,6 elastomeric material in one's power
Table 3 comparative example 1 and embodiment 5,7,8 elastomeric material performance table in one's power
The damping curve of Fig. 3 comparative example 1 and embodiment 5,7,8 elastomeric material in one's power
Table 4 comparative example 1 and embodiment 3,9 elastomeric material performance table in one's power
The damping curve of Fig. 4 comparative example 1 and embodiment 3,9 elastomeric material in one's power.
Claims (5)
1. a high damping properties elastomeric material, it is characterised in that: in mass fraction, specifically composed as follows:
Slip ring material selects S1000 or the M1000 model that Tianjin Wei Rui supramolecule Science and Technology Ltd. provides.
2. a kind of high damping properties elastomeric material according to claim 1, it is characterised in that: part number of slip ring material is 40 parts.
3. a kind of high damping properties elastomeric material according to claim 1, it is characterised in that: part number of epoxy natural rubber is 20 weight parts; The epoxy content of epoxy natural rubber is 25%-50%.
4. prepare the method for a kind of high damping properties elastomeric material as claimed in claim 1, it is characterized in that, preparation technology is as follows: slip ring material enters to be carried out crosslinking reaction before rubber blended, and crosslinking reaction condition is crosslinking temperature: 150-180 DEG C, crosslinking time: 3-5 hour; Then by matrix natural rubber, interfacial compatibilizer epoxy natural rubber, cross roller in two roller mill room temperature and plasticate, make it evenly mixing; Add activator, promotor, anti-aging agent successively, after thin-pass, add the slip ring material that crosslinking reaction is crossed, obtain the rubber unvulcanizate of Natural rubber, epoxy natural rubber ENR and slip ring material; Finally add vulcanizing agent, bottom sheet after thin-pass, make unvulcanized film; Sulfuration in vulcanizing press: curing temperature is set as 143 DEG C, pressure setting is 10��15MPa, and the time is T90+3 minute, and wherein T90 is sulfurizing time.
5. the application of a kind of high damping properties elastomeric material according to claim 1, it is characterised in that: this materials application is at shock insulation rubber bearing rubber lamination.
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| CN104788759B (en) * | 2015-04-10 | 2017-07-18 | 北京化工大学 | A kind of high-damping bearing nitile-butadiene rubber composite material and preparation method thereof |
| CN106146929A (en) * | 2016-08-11 | 2016-11-23 | 安徽中鼎减震橡胶技术有限公司 | A kind of rubber composition for automobile absorber lining and preparation method thereof |
| CN108852056A (en) * | 2017-05-16 | 2018-11-23 | 佛山市顺德区美的电热电器制造有限公司 | Resilient cushion and food cooking machine |
| CN109021328B (en) * | 2017-06-08 | 2020-08-25 | 上海交通大学 | Natural latex/polyrotaxane blending material and preparation method thereof |
| CN109749322B (en) * | 2019-01-09 | 2021-04-27 | 黄山市尚义橡塑制品有限公司 | Sliding cross-linked network acrylate rubber sealing element and preparation method thereof |
| JP6853987B1 (en) * | 2020-05-19 | 2021-04-07 | 株式会社タイテックスジャパン | Composite damping material |
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| EP1798257B1 (en) * | 2005-12-19 | 2010-05-19 | Sumitomo Rubber Industries, Ltd. | Rubber composition for inner liner and tire having an inner liner using the same rubber composition |
| RU2397997C2 (en) * | 2005-12-27 | 2010-08-27 | Сумитомо Раббер Индастриз, Лтд. | Rubber mixture for tyre sidewalls and method of preparing said mixture |
| KR101680905B1 (en) * | 2010-03-05 | 2016-11-29 | 스미토모 고무 고교 가부시키가이샤 | Highly damping composition |
| JP2014034623A (en) * | 2012-08-08 | 2014-02-24 | Yokohama Rubber Co Ltd:The | Rubber composition for tire rim cushion or gum finishing and pneumatic tire employing the same |
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