CN104109265B - A kind of yielding rubber - Google Patents
A kind of yielding rubber Download PDFInfo
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- CN104109265B CN104109265B CN201410345732.4A CN201410345732A CN104109265B CN 104109265 B CN104109265 B CN 104109265B CN 201410345732 A CN201410345732 A CN 201410345732A CN 104109265 B CN104109265 B CN 104109265B
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Abstract
Disclosure one yielding rubber, the quality proportioning of the raw material of this yielding rubber is as follows: natural rubber 100 parts；Activating agent ZEH-DL 2-5 part；Zinc oxide 5 parts；White carbon black 30-80 part；Antioxidant 4010NA 2 parts；Antioxidant 4020 1.5 parts；Protection wax 1 part；Sulfur 0.5-1 part；Captax BS 1-1.5 part；Accelerator TBTD 0.5-1 part；Diphenylguanidine TDM 0.5-1 part。Compared with existing yielding rubber, the yielding rubber dynamic rate of the present invention is obviously reduced, and the output ratio of Q-switching to free running is less, and creep is lower, has good enabling capabilities and damping performance。
Description
Technical field
The invention belongs to rubber materials, particularly to a kind of rubber being used for manufacturing cushioning product。
Background technology
Shock absorbing rubber product, for eliminating or reduce the transmission of mechanical shock, reaches damping, noise reduction and reduces the caused harm of impact。String etc. is protected including rubber absorbers, rubber bumper (block, pad), rubber connector, air spring and rubber。For the rubber product that gum or narrow fabrics, metallic framework strengthen, generally manufacture by die pressing。It is widely used in the industries such as building construction, plant equipment, vehicle, naval vessel and instrument。
It is known that rubber damping product, particularly support class amortisseur, buffer stoppers etc. are under bigger pressure, as decrement is relatively big, the elasticity of rubber cannot show, and its damping effect will be greatly reduced, result even in the effect being unable to reach vibration isolation, damping, therefore, how to reduce the creep of yielding rubber, to reduce rubber decrement under compression, thus obtaining excellent support ability and damping effect, it is that this area is always desired。
Summary of the invention
It is an object of the invention to provide a kind of yielding rubber with low creep。
It is as follows that the present invention realizes the technical scheme that above-mentioned purpose adopts:
A kind of yielding rubber, the quality proportioning of its raw material is as follows:
Natural rubber 100 parts；
Activating agent ZEH-DL2-5 part；
Zinc oxide 5 parts；
White carbon black 30-80 part；
Antioxidant 4010NA 2 parts；
Antioxidant 4020 1.5 parts；
Protection wax 1 part；
Sulfur 0.5-1 part；
Captax BS1-1.5 part；
Accelerator TBTD0.5-1 part；
Diphenylguanidine TDM0.5-1 part。
Further, described white carbon black is white carbon black SRF and/or white carbon black FEF。
Beneficial effect:
Compared with the existing yielding rubber of similar stiffness, the damping rubber of present invention deflection under compression substantially reduces, and enabling capabilities is better。
Compared with the yielding rubber with suitable static rigidity, the damping rubber of present invention dynamic rate under same frequency is obviously reduced, and the output ratio of Q-switching to free running is less, and creep is lower, it is meant that its damping performance is better。
Compared with the yielding rubber with suitable static rigidity, the damping rubber hardness of the present invention is lower, it is meant that its raw heat reduces, life。
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further details。
Embodiment 1
The formula that yielding rubber hardness is 55HA is as follows:
。
Adopting existing method to make yielding rubber finished product, detailed process is as follows:
1, weigh: weigh each raw material by said ratio；
2, mixing: first natural rubber to be added mill and plasticates 5-10 minute, then feed intake in the following order: natural rubber--activating agent--age resistor--accelerator--white carbon black--sulfur；
3, bottom sheet: all material all mix bottom sheet molding after fully, and thickness is about 5-8mm；
4, sulfuration: the semi-finished product vulcanizing press sulfuration after molding, curing temperature 160 DEG C, time 30min。
In the present invention, zinc oxide belongs to activating agent, and protection wax belongs to age resistor。
Generic raw material addition sequence is not specially required, it is possible to add together, as zinc oxide and activating agent ZEH-DL are simultaneously introduced, as antioxidant 4010NA, 4020 and protection wax be simultaneously introduced, as captax BS, TBTD and DTDM together add。
Creep test
Contrast sample is WIF0C0RE023 product (the hardness 55HA of Wuxi Fuerkang Science and Technology Co., Ltd's production and sales, this existing product is adopted above-mentioned identical process conditions to produce by natural rubber with adjuvant and prepares, but the adjuvant selected is different from the adjuvant of above-mentioned yielding rubber)。
Test procedure:
1, it is depressed into the 0.5% of rated load in advance, stops 3 seconds, power and displacement are reset；
2, it is loaded into 3KN, record displacement now with the speed of 5mm/min；
3, keep load constant, the deflection that the recording compressed time 24 is as a child corresponding, continue 13 days。
Result is as follows:
Wherein, 1# is comparative sample, and 2# is the yielding rubber of embodiment 1。
Above-mentioned creep test shows: under similar stiffness, and the yielding rubber of the present invention can substantially reduce deflection, and its deflection of the 14th day, compared with the deflection of the 14th day of contrast sample (1#), decreases 21%。
Embodiment 2
The formula that yielding rubber hardness is 70HA is as follows:
。
The process conditions identical with embodiment 1 are adopted to make yielding rubber finished product。
Creep test
Contrast sample is the WIF0C0RE023 product (hardness 70HA, this existing product is adopted identical process conditions to produce by natural rubber with adjuvant and prepares, but the adjuvant selected is different from the adjuvant of above-mentioned yielding rubber) of Wuxi Fuerkang Science and Technology Co., Ltd's production and sales。
Test procedure:
1, it is depressed into the 0.5% of rated load in advance, stops 3 seconds, power and displacement are reset；
2, it is loaded into 3KN, record displacement now with the speed of 5mm/min；
3, keep load constant, the deflection that the recording compressed time 24 is as a child corresponding, continue 13 days。
Result is as follows:
Wherein, 1# is comparative sample, and 2# is the yielding rubber of embodiment 2。
Above-mentioned creep test shows: under similar stiffness, and the yielding rubber of the present invention can substantially reduce deflection, and its deflection of the 14th day, compared with the deflection of the 14th day of contrast sample (1#), decreases about 21%。
Embodiment 3
The formula of yielding rubber is as follows:
。
It is 48HA that above-mentioned yielding rubber is designated as 2#(hardness)。The W2FT6050001 product adopting Wuxi Fuerkang Science and Technology Co., Ltd's production and sales (is designated as 1#, its hardness is 58HA, this existing product is adopted identical process conditions to produce by natural rubber with adjuvant and prepares, but the adjuvant selected is different from the adjuvant of above-mentioned yielding rubber) contrast。
Static test
Test temperature: 22 ± 2 DEG C
Loading and unloading speed: 10mm/min
Maximum load: 1.3 times of rated loads
Entrance power: 0.005 times of rated load
Test procedure:
1, first pass load: be depressed into 1.3 times of nominal torques in advance with 10mm/min speed, unloading。Keep 15s。
2, second time load: with 10mm/min speed compression to 1.3 times nominal torque, unloading。Record loads and unloading curve。Calculate the shear stiffness of 5 points (25%, 50%, 75%, 100%, 125%) loaded。
Result of the test is as follows:
。
Above-mentioned static test is it is shown that when hardness differs 10HA, in the scope that load is 25%-100%, 1# and 2# sample has suitable static properties。
Dynamic test
Test temperature: 22 ± 2 DEG C
Frequency: 10Hz
Amplitude: 0.1mm
Test procedure: namely start dynamic test after above-mentioned static test is finished, be loaded into the 0.25 of nominal torque respectively, 0.5,0.75,1,1.25, record the dynamic rate value under 5 kinds of states。Result is as follows:
。
Above-mentioned dynamic test results shows, when hardness differs 10HA, in the scope that load is 25%-125%, the dynamic rate of 2# sample will significantly lower than 1# sample, it was shown that 2# sample has better damping performance。
The output ratio of Q-switching to free running:
。
For amortisseur, it is intended that product can have the relatively low output ratio of Q-switching to free running under specific frequency, sees from the data above, the output ratio of Q-switching to free running of 2# sample, compared with 1# sample, reduces 16%-26%, has obvious advantage。
Creep test
1, it is depressed into the 0.5% of rated load in advance, stops 3 seconds, power and displacement are reset；
2, the 75% of rated load it is loaded into the speed of 5mm/min, record displacement now；
3, keep load constant, the deflection under the different compression time of record。
Following (the initial deformation amount D of the result of 1# sample0For 10.125mm):
。
Following (the initial deformation amount D of the result of 2# sample0For 10.7793mm):
。
Above-mentioned creep experiments shows, compared with 1# sample, the yielding rubber total creep amount of the present invention reduces near 46%。
Claims (1)
1. having a yielding rubber for low creep, the quality proportioning of its raw material is as follows:
Natural rubber 100 parts；
Activating agent ZEH-DL2-5 part；
Zinc oxide 5 parts；
White carbon black 30-80 part；
Antioxidant 4010NA 2 parts；
Antioxidant 4020 1.5 parts；
Protection wax 1 part；
Sulfur 0.5-1 part；
Captax BS1-1.5 part；
Accelerator TBTD0.5-1 part；
Diphenylguanidine TDM0.5-1 part；
Described white carbon black is white carbon black SRF and/or white carbon black FEF。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410345732.4A CN104109265B (en) | 2014-07-21 | 2014-07-21 | A kind of yielding rubber |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410345732.4A CN104109265B (en) | 2014-07-21 | 2014-07-21 | A kind of yielding rubber |
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| CN104109265A CN104109265A (en) | 2014-10-22 |
| CN104109265B true CN104109265B (en) | 2016-06-22 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105367834A (en) * | 2015-12-01 | 2016-03-02 | 苏州市相城区明达复合材料厂 | Damping composite material for vehicles |
| CN107266730A (en) * | 2017-08-09 | 2017-10-20 | 浙江久运汽车零部件有限公司 | A kind of rub resistance rubber buffer |
| CN109679152A (en) * | 2018-11-20 | 2019-04-26 | 建新赵氏科技有限公司 | The natural rubber of the low output ratio of Q-switching to free running and low loss coefficient under a kind of high rigidity |
| CN111333926B (en) * | 2020-04-27 | 2022-08-16 | 株洲时代新材料科技股份有限公司 | Low-temperature-resistant compression permanent deformation damping rubber and preparation method thereof |
| CN114573885A (en) * | 2022-01-18 | 2022-06-03 | 江苏冠联新材料科技股份有限公司 | High-performance rubber compound for damping support of highway bridge |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101486808A (en) * | 2009-02-25 | 2009-07-22 | 上海众力汽车部件有限公司 | Antifatigue rubber composition |
| CN102181084B (en) * | 2011-04-07 | 2012-08-22 | 四川省成都市华泰橡塑制品有限公司 | Rubber for vehicle shock absorber |
| CN103788424A (en) * | 2012-10-31 | 2014-05-14 | 合肥晨兴汽车零部件有限公司 | Formula for rubber used for automobile shock absorption products |
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