CN107337814A - A kind of high-damping rubber material and preparation method thereof - Google Patents
A kind of high-damping rubber material and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a kind of high-damping rubber material, is mainly prepared by following mass parts raw material：100 parts of rubber, 14 parts of sulphur, 38 parts of age resistor, 3 10 parts of zinc oxide, 15 parts of stearic acid, 20 75 parts of polar filler, 5 20 parts of plasticizer, 13 parts of accelerant CZ, anti-revert 10 50 parts of 0.2 2 parts of agent, hindered phenol and/or hindered amine；Rubber is polar rubber, or the combination of polar rubber and non-polar rubber；When rubber is the combination of polar rubber and non-polar rubber, the quality of polar rubber is not less than 20 parts；Polar filler is lignin fibre and/or white carbon.The preparation method of the present invention：All raw materials in addition to sulphur and accelerator are subjected to high-temperature mixing, cooling, obtain masterbatch；Sulphur is added in masterbatch and accelerator is kneaded, is stood, and vulcanization, obtains high-damping rubber material.The heat endurance excellent performance of the high-damping rubber material of the present invention, confirm to separate out without small molecule by hot oxygen accelerated ageing, long-time requirement can be met.
Description
Technical field
The invention belongs to field of rubber materials, more particularly to a kind of have good performance steady during long-term use
Qualitatively high-damping rubber and preparation method thereof.
Background technology
With the development of modern science and technology and the continuous improvement of human living standard, people are to work and living environment
Comfortableness propose higher requirement, thus how effectively to administer all kinds of vibrations and the pollution of noise, it has also become scientist
One of important topic of care.Rubber has good damping due to its distinctive viscous-elastic behaviour, extensive at present
The damping noise reduction for being applied to the field such as track traffic, building, machinery.
Rubber plastic blend is a kind of common method for improving damping, as disclosed a kind of high resistant in CN201410128421 patents
Buddhist nun's rubber support and preparation method thereof, but this method generally requires and is individually mixed plastic pellet with plasticizer, adds rubber
The use of the equipment such as the moulding process of glue material and kneader.CN201610882263, which discloses a kind of automobile using hindered phenol and covered, to be taken off
The filler such as native nitrile rubber composite damping material and preparation method thereof, the patent utilization montmorillonite, cork fibrous designs resistance
Damping material, but it is related to the use of a variety of organic solvents such as dimethylbenzene, hydroxide sodium hypophosphite, technique is complex.
In addition, rubber during long-term use, is heated, the effect of oxygen, and the easy aging fracture of rubber molecular chain, performance
It can have greatly changed.For high-damping rubber, its performance change is not only acted on by thermo-oxidative ageing, while high-damping rubber
Substantial amounts of operation oil and organic molecule are often dosed in glue to be obstructed class material, is easily separated out after thermo-oxidative ageing, and the performance oxygen that is heated is old
It is bigger compared with ordinary rubber material to change influence.
And be to improve this technical problem, substantially it is improved, improves in terms of macromolecular chain hindered phenol synthesis at present
The problem of hindered phenol easily separates out in high-damping rubber, it is single that it solves damping stability performance, can not improve comprehensively.And
High-damping rubber not only can be occurred molecular chain rupture by the effect of hot oxygen, also suffer from simultaneously during long-term use
The problem of hindered phenol, operation oil separate out, this technical problem needs to carry out synthesis improvement.
The content of the invention
The technical problems to be solved by the invention are to overcome the shortcomings of to mention in background above technology and defect, there is provided one
Kind has good high-damping rubber of stability and preparation method thereof during long-term use.
In order to solve the above technical problems, technical scheme proposed by the present invention is：
A kind of high-damping rubber material, by mass parts, is mainly prepared from the following materials：
100 parts of rubber,
Sulphur 1-4 parts,
Age resistor 3-8 parts,
Zinc oxide 3-10 parts,
Stearic acid 1-5 parts,
Polar filler 20-75 parts,
Plasticizer 5-20 parts,
Accelerant CZ 1-3 parts,
Anti- agent 0.2-2 parts of reverting,
Hindered phenol and/or hindered amine 10-50 parts；
The rubber is polar rubber, or the combination for polar rubber and non-polar rubber；When the rubber is polarity
During the combination of rubber and non-polar rubber, the quality of polar rubber is not less than 20 parts；By rubber polar groups with it is organic small
Molecular hybrid, the damping capacity of elastomeric material is improved, while small molecule precipitation is reduced by the constraint effect of weak bond.
The polar filler is lignin fibre and/or white carbon.From lignin, white carbon as polar filler, increase
Add the active force between hindered amine or hindered phenol and filler, avoid the precipitation of organic molecule thing.
Above-mentioned high-damping rubber material, it is preferred that hindered phenol is used in combination with hindered amine, and weak bond can be improved by synergy
Formation, so as to improve the damping capacity of elastomeric material and reduce small molecule separate out.
Above-mentioned high-damping rubber material, it is preferred that its raw material also includes：
Lamella filler 5-75 parts and the coupling agent for accounting for lamella packing quality content 0.5%-20%；
The lamella filler is the one or more in mica, kaolin and montmorillonite；The coupling agent be KH-550 and
One or more in Si-69.When rubber is blended with lamella filler, rubber molecular chain is inserted between lamella filler, is formed
Special intercalation configuration, on the one hand iris action can be played to the migration of the small molecules such as operation oil, hindered amine, hindered phenol, separately
One side lamella filler can form blocking effect to extraneous heat, oxygen, ozone, avoid the aging of elastomeric material, fill out simultaneously
Add coupling agent, add the intermolecular forces by organic molecule, filler and rubber molecular chain；The lamella filler blocking effect shows
It is intended to as shown in Figure 1.
Above-mentioned high-damping rubber material, it is preferred that the polar rubber is NBR rubber (nitrile rubber), CIIR rubber
One or more in (chlorinated scoline), BIIR rubber (brombutyl).
Above-mentioned high-damping rubber material, it is preferred that the hindered phenol has an alkyl group, and the carbon number in alkyl group is
More than 15, and the cyclic structure with two and the above.Hindered phenol of the selection with long chain alkyl group class formation, on the one hand
The impeding material excellent performance of resistance to precipitation with chain alkyl, on the other hand the hindered phenol with chain alkyl add and rubber
Compatibility between matrix, hindered phenol can be avoided to separate out.
Above-mentioned high-damping rubber material, it is preferred that the hindered phenol be hindered phenol KHY-1330, hindered phenol 1076, by
Hinder phenol 1010, hindered phenol 1098, hindered phenol AO-60, hindered phenol AO-80, hindered phenol 3114, one kind in hindered phenol 3115 or several
Kind.
Above-mentioned high-damping rubber material, it is preferred that the hindered amine is hindered amine 770 and/or hindered amine GW-3346.
Above-mentioned high-damping rubber material, it is preferred that anti-recovery agent selection PK900, WK901, HS258,
One or more in WY918, ZXK900, when vulcanizing to long-time the fracture of strand play compensating action, it is big so as to meet
Vulcanization needs type rubber for a long time.
Above-mentioned high-damping rubber material, it is preferred that the age resistor includes 1-3 parts anti-aging agent RD and 2-5 part age resistor
4010NA。
Above-mentioned high-damping rubber material, it is preferred that the plasticizer is DOP (dioctyl phthalate) or aromatic hydrocarbons
Oil.
The inventive concept total as one, the present invention also provide a kind of preparation method of above-mentioned high-damping rubber material, wrap
Include following steps：
(1) high-temperature mixing will be carried out in all raw materials input banbury in addition to sulphur and accelerator, cools down, obtain mother
Refining glue；
(2) masterbatch is put on opening rubber mixing machine, is homogeneously added into sulphur and accelerator is kneaded, it is quiet
Put, finally vulcanized, obtain the high-damping rubber material.
Above-mentioned preparation method, it is preferred that in the step (1), the temperature of high-temperature mixing is 110-130 DEG C；
In the step (2), time of standing is more than 24h, and the temperature of vulcanization is 140-160 DEG C, and the time of vulcanization is
15-30min。
Compared with prior art, the advantage of the invention is that：
(1) the heat endurance excellent performance of high-damping rubber material of the invention, confirmed by hot oxygen accelerated ageing without small
Molecule separates out, and can meet long-time requirement.
(2) high-damping rubber material of the invention can meet the large-scale rubber such as more than one meter high-damp rubber support of size
Vulcanization needs product for a long time, and curability conservation rate is more excellent.
(3) high-damping rubber material equivalent damping ratio of the invention is more than 25%, and power consumption effect protrudes.
(4) preparation technology of high-damping rubber material of the invention need not increase special compared with prepared by traditional elastomeric material
Process, preparation technology are simple.
Brief description of the drawings
Fig. 1 is lamella filler isolation effectiveness principle schematic diagram in the present invention.
Fig. 2 is the testing machine structure schematic diagram of present invention test damping capacity.
Fig. 3 is the example master drawing that service-test machine of the present invention to form hysteresis loop by being loaded to sample.
Marginal data：
1st, locking nut；2nd, connecting plate；3rd, fixture；4th, bearing pin one；5th, lower clamp；6th, bearing pin two；7th, the gap that disappears plate；8th, disappear gap
Ring.
Embodiment
For the ease of understanding the present invention, more comprehensively, meticulously retouched below in conjunction with preferred embodiment to inventing to do herein
State, but protection scope of the present invention is not limited to specific embodiment.
Unless otherwise defined, all technical terms used hereinafter are generally understood that implication phase with those skilled in the art
Together.Technical term used herein is intended merely to describe the purpose of specific embodiment, is not intended to the limitation present invention's
Protection domain.
Unless otherwise specified, various raw material, reagent, the instrument and equipment etc. used in the present invention can pass through city
Field is commercially available or can be prepared by existing method.
The evaluation of damping capacity shears sample using two panels in following embodiments and comparative example, as shown in Figure 2：Pass through
Connecting plate 2 is connected by locking nut 1 with rubber loading tester and upper fixture, is connected test sample and fixture 3 by bearing pin 1
Connect；The sample other end is fixed by lower clamp 5 and bearing pin 26, for ensure sample loading when it is steady, using the He of gap plate 7 that disappears
The gap that disappears ring 8 is fixed.Load deflection is set as the 100% of sample rubber thickness, loading frequency 2Hz.Equivalent damping ratio Heq
The energy W absorbed in hysteresis loop is loaded as stated abovedWith elastic deformation can the ratio between W, as shown in Figure 3, calculation formula is：
Long-time curability passes through reversion percentage (Rt) characterize, the smaller sulfuration resistant for representing sizing material of reversion percentage value
Performance of reverting is better, i.e., more suitable long-time vulcanization needs, and calculation formula is as follows：
Wherein, MHFor sizing material peak torque, MLFor sizing material minimum torque, MtReach the torsion of t hours after peak torque for sizing material
Square value, it is the R under the conditions of 150 DEG C to survey data in of the invention3Revert rate.
Comparative example：
The high-damping rubber material of this comparative example, is mainly prepared from the following materials：
Nitrile rubber (butyronitrile content ＞ 38%) 30kg,
Natural rubber 70kg,
Sulphur 2kg,
Anti-aging agent RD 2kg,
Antioxidant 4010NA 3.5kg,
Zinc oxide 5kg,
Stearic acid 2kg,
Carbon black N110 55kg,
DOP 10kg、
Accelerant CZ 1.5kg,
AO-60 30kg。
The preparation method of the high-damping rubber material of the present embodiment, comprises the following steps：
(1) banbury is cooled down, will entered in all raw materials input banbury of the above-mentioned raw materials in addition to sulphur and accelerator
Row banburying, using 120 DEG C of high-temperature mixings, the slice on opening rubber mixing machine, cooling, obtain masterbatch；
(2) on the masterbatch input opening rubber mixing machine obtained step (1), it is homogeneously added into sulphur, accelerant CZ enters
Row is kneaded, and is then stood and is parked more than 24h, then vulcanizes 20min at 150 DEG C, that is, obtains high-damping rubber material.
The high-damping rubber material that this comparative example obtains is tested according to GB/T528 method of testings, its tensile strength is
19.8MPa, elongation at break 420%, DMTA measure elastomeric material maximum loss factor 1.1；Anti-recovery rate R3For 35%,
Equivalent damping ratio is calculated as 21% by design in damping capacity.The high-damping rubber material of preparation is positioned over 70 DEG C of drums
There are a large amount of precipitates in aging 168h in wind baking oven, the rubbery sample surface after aging, and tensile strength rate of change is 12%, fracture
Elongation change rate 18%, elastomeric material equivalent damping ratio rate of change 30% after aging；Obtained elastomeric material room temperature is parked
360 days, there is precipitate, tensile strength rate of change 18%, elongation at break rate of change 21%, equivalent damping ratio change in specimen surface
Rate 35%.
Embodiment 1：
A kind of high-damping rubber material of the invention, is mainly prepared from the following materials：
Nitrile rubber (butyronitrile content ＞ 38%) 30kg,
Natural rubber 70kg,
Sulphur 2kg,
Anti-aging agent RD 2kg,
Antioxidant 4010NA 3.5kg,
Zinc oxide 5kg,
Stearic acid 2kg,
Lignocellulosic 20kg,
Carbon black N110 55kg,
DOP 10kg、
Accelerant CZ 1.5kg,
AO-60 30kg、
The anti-agent PK900 1kg that revert.
The preparation method of the high-damping rubber material of the present embodiment, comprises the following steps：
(1) banbury is cooled down, will entered in all raw materials input banbury of the above-mentioned raw materials in addition to sulphur and accelerator
Row banburying, using 120 DEG C of high-temperature mixings, the slice on opening rubber mixing machine, cooling, obtain masterbatch；
(2) on the masterbatch input opening rubber mixing machine obtained step (1), it is homogeneously added into sulphur, accelerant CZ enters
Row is kneaded, and is then stood and is parked more than 24h, then vulcanizes 20min at 150 DEG C, that is, obtains high-damping rubber material.
The high-damping rubber material that the present embodiment obtains is tested according to GB/T528 method of testings, its tensile strength is
21.9MPa, elongation at break 456%, DMTA measure elastomeric material maximum loss factor 1.6；Anti-recovery rate R3For 20%,
Equivalent damping ratio is calculated as 23% by design in damping capacity；The high-damping rubber material of preparation is positioned over 70 DEG C of drums
Aging 168h in wind baking oven, the rubbery sample surface after aging is without precipitate, and tensile strength rate of change is 10%, elongation at break
Rate of change 16%, elastomeric material equivalent damping ratio rate of change 25% after aging；Obtained elastomeric material room temperature is parked 360 days,
Specimen surface becomes without precipitate, tensile strength rate of change 15%, elongation at break rate of change 17%, elastomeric material equivalent damping ratio
Rate 15%.
Embodiment 2：
A kind of high-damping rubber material of the invention, is mainly prepared from the following materials：
The preparation method of the high-damping rubber material of the present embodiment, comprises the following steps：
(1) banbury is cooled down, will entered in all raw materials input banbury of the above-mentioned raw materials in addition to sulphur and accelerator
Row banburying, using 120 DEG C of high-temperature mixings, the slice on opening rubber mixing machine, cooling, obtain masterbatch；
(2) on the masterbatch input opening rubber mixing machine obtained step (1), it is homogeneously added into sulphur, accelerant CZ enters
Row is kneaded, and is then stood and is parked more than 24h, then vulcanizes 20min at 150 DEG C, that is, obtains high-damping rubber material.
The high-damping rubber material that the present embodiment obtains is tested according to GB/T528 method of testings, its tensile strength is
23.2MPa, elongation at break 431%, DMTA measure elastomeric material maximum loss factor 1.8；Anti-recovery rate R3For
19%, equivalent damping ratio is calculated as 23.5% by design in damping capacity.High-damping rubber material will be prepared to be positioned over
Aging 168h in 70 DEG C of convection ovens, rubbery sample surface after aging is without precipitate, aging post-tensioning change rate of strength 7%,
Elongation at break rate of change 14%, elastomeric material equivalent damping ratio rate of change 15% after aging；By obtained elastomeric material room temperature
Park 360 days, specimen surface is without precipitate, tensile strength rate of change 8%, elongation at break rate of change 15%, elastomeric material etc.
Imitate variation of damping ratio rate 7%.
Embodiment 3：
A kind of high-damping rubber material of the invention, is mainly prepared from the following materials：
The preparation method of the high-damping rubber material of the present embodiment, comprises the following steps：
(1) banbury is cooled down, will entered in all raw materials input banbury of the above-mentioned raw materials in addition to sulphur and accelerator
Row banburying, using 120 DEG C of high-temperature mixings, the slice on opening rubber mixing machine, cooling, obtain masterbatch；
(2) on the masterbatch input opening rubber mixing machine obtained step (1), it is homogeneously added into sulphur, accelerant CZ enters
Row is kneaded, and is then stood and is parked more than 24h, then vulcanizes 20min at 150 DEG C, that is, obtains high-damping rubber material.
By the high-damping rubber material that the present embodiment obtains according to GB/T528 method of testings, tensile strength 22.3MPa, break
Elongation 443% is split, measures elastomeric material maximum loss factor 1.8；Anti-recovery rate R3For 10%, damping capacity is by design
Equivalent damping ratio is calculated as 33% in scheme.The high-damping rubber material of preparation is positioned over aging in 70 DEG C of convection ovens
168h, the rubbery sample surface after aging is without precipitate, aging post-tensioning change rate of strength 8%, elongation at break rate of change
12%, equivalent damping ratio rate of change 20%；Obtained elastomeric material room temperature is parked 360 days, specimen surface is without precipitate, stretching
Change rate of strength 9%, elongation at break rate of change 13%, elastomeric material equivalent damping ratio rate of change 8%.
Embodiment 4：
A kind of high-damping rubber material of the invention, is mainly prepared from the following materials：
The preparation method of the high-damping rubber material of the present embodiment, comprises the following steps：
(1) banbury is cooled down, will entered in all raw materials input banbury of the above-mentioned raw materials in addition to sulphur and accelerator
Row banburying, using 120 DEG C of high-temperature mixings, the slice on opening rubber mixing machine, cooling, obtain masterbatch；
(2) on the masterbatch input opening rubber mixing machine obtained step (1), it is homogeneously added into sulphur, accelerant CZ enters
Row is kneaded, and is then stood and is parked more than 24h, then vulcanizes 20min at 150 DEG C, that is, obtains high-damping rubber material.
By the high-damping rubber material that the present embodiment obtains according to GB/T528 method of testings, tensile strength 24.2MPa, break
Elongation 615% is split, DMTA measures elastomeric material maximum loss factor 1.7；Anti-recovery rate R3For 15%, damping capacity is pressed
Equivalent damping ratio is calculated as 35% in design.The elastomeric material of preparation is positioned over 70 DEG C of convection oven aging 168h,
Rubbery sample surface after aging is without precipitate, aging post-tensioning change rate of strength 3%, elongation at break rate of change 11%, rubber
Glue material equivalent damping ratio rate of change 5%；Obtained elastomeric material room temperature is parked 360 days, specimen surface is without precipitate, aging
Post-tensioning change rate of strength 4%, elongation at break rate of change 12%, elastomeric material equivalent damping ratio rate of change 3%.
By above-described embodiment and the Comparison of experiment results of comparative example it can be found that the present invention can solve the analysis of small molecule
Go wrong, effect is managed the most when acting synergistically with hindered amine especially by hindered phenol and being applied with interlayer blocking effect simultaneously
Think.
Claims (10)
1. a kind of high-damping rubber material, it is characterised in that by mass parts, be mainly prepared from the following materials：
100 parts of rubber,
Sulphur 1-4 parts,
Age resistor 3-8 parts,
Zinc oxide 3-10 parts,
Stearic acid 1-5 parts,
Polar filler 20-75 parts,
Plasticizer 5-20 parts,
Accelerant CZ 1-3 parts,
Anti- agent 0.2-2 parts of reverting,
Hindered phenol and/or hindered amine 10-50 parts；
Wherein, the rubber is polar rubber, or the combination for polar rubber and non-polar rubber；When the rubber is polarity
During the combination of rubber and non-polar rubber, the quality of polar rubber is not less than 20 parts；
The polar filler is lignin fibre and/or white carbon.
2. high-damping rubber material as claimed in claim 1, it is characterised in that its raw material also includes：
Lamella filler 5-75 parts and the coupling agent for accounting for lamella packing quality content 0.5%-20%；
The lamella filler is the one or more in mica, kaolin and montmorillonite；The coupling agent is KH-550 and Si-69
In one or more.
3. high-damping rubber material as claimed in claim 1, it is characterised in that the polar rubber is NBR rubber, CIIR rubbers
One or more in glue, BIIR rubber.
4. high-damping rubber material as claimed in claim 1, it is characterised in that it is described it is anti-revert agent for PK900, WK901,
One or more in WY918, ZXK900 and DL-268.
5. high-damping rubber material as claimed in claim 1, it is characterised in that the hindered phenol has alkyl group, alkyl group
In carbon number be more than 15, and the cyclic structure with two and the above.
6. high-damping rubber material as claimed in claim 1, it is characterised in that the hindered phenol be hindered phenol KHY-1330,
Hindered phenol 1076, hindered phenol 1010, hindered phenol 1098, hindered phenol AO-60, hindered phenol AO-80, hindered phenol 3114, hindered phenol
One or more in 3115；The hindered amine is the one or more in hindered amine 770 and hindered amine GW-3346.
7. high-damping rubber material as claimed in claim 1, it is characterised in that the age resistor includes 1-3 part anti-aging agent RDs
With 2-5 part antioxidant 4010NAs.
8. high-damping rubber material as claimed in claim 1, it is characterised in that the plasticizer is DOP or aromatic naphtha.
A kind of 9. preparation method of high-damping rubber material as described in claim any one of 1-8, it is characterised in that including with
Lower step：
(1) high-temperature mixing will be carried out in all raw materials input banbury in addition to sulphur and accelerator, cools down, obtain masterbatching
Glue；
(2) masterbatch is put on opening rubber mixing machine, is homogeneously added into sulphur and accelerator is kneaded, stood, most
After vulcanized, obtain the high-damping rubber material.
10. preparation method as claimed in claim 9, it is characterised in that in the step (1), the temperature of high-temperature mixing is
110-130℃；
In the step (2), the time of standing is more than 24h, and the temperature of vulcanization is 140-160 DEG C, and the time of vulcanization is 15-
30min。
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| CN109177395A (en) * | 2018-09-08 | 2019-01-11 | 佛山朝鸿新材料科技有限公司 | A kind of preparation method of automobile noise reduction wheel cover inner lining material |
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| CN110092961A (en) * | 2019-04-10 | 2019-08-06 | 华南理工大学 | A kind of high-performance non-polar rubber material and preparation method thereof |
| CN110776584A (en) * | 2019-11-05 | 2020-02-11 | 株洲时代新材料科技股份有限公司 | Damping additive, high-performance rubber material prepared from damping additive and preparation method of high-performance rubber material |
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| CN111073207A (en) * | 2019-12-16 | 2020-04-28 | 上海锦湖日丽塑料有限公司 | High-damping ABS composition and preparation method thereof |
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| CN108948449A (en) * | 2018-05-29 | 2018-12-07 | 株洲时代新材料科技股份有限公司 | A kind of super-low-hardness high-damping rubber composite material and preparation method, application |
| CN108948449B (en) * | 2018-05-29 | 2021-03-16 | 株洲时代新材料科技股份有限公司 | Ultralow-hardness high-damping rubber composite material and preparation method and application thereof |
| CN109177395A (en) * | 2018-09-08 | 2019-01-11 | 佛山朝鸿新材料科技有限公司 | A kind of preparation method of automobile noise reduction wheel cover inner lining material |
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| CN109651668B (en) * | 2018-12-04 | 2021-06-15 | 株洲时代新材料科技股份有限公司 | Underwater sound absorption rubber composite material and preparation method thereof |
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| CN110776584A (en) * | 2019-11-05 | 2020-02-11 | 株洲时代新材料科技股份有限公司 | Damping additive, high-performance rubber material prepared from damping additive and preparation method of high-performance rubber material |
| CN110776584B (en) * | 2019-11-05 | 2021-07-06 | 株洲时代新材料科技股份有限公司 | Damping additive, high-performance rubber material prepared from damping additive and preparation method of high-performance rubber material |
| CN110791029B (en) * | 2019-11-14 | 2020-10-27 | 华南理工大学 | Lignin grafted brominated butyl rubber composite material and preparation method thereof |
| CN110791029A (en) * | 2019-11-14 | 2020-02-14 | 华南理工大学 | Lignin grafted brominated butyl rubber composite material and preparation method thereof |
| CN111073207A (en) * | 2019-12-16 | 2020-04-28 | 上海锦湖日丽塑料有限公司 | High-damping ABS composition and preparation method thereof |
| CN111303580A (en) * | 2020-01-23 | 2020-06-19 | 上海锦湖日丽塑料有限公司 | High-damping low-noise ABS composition and preparation method thereof |
| CN111286130A (en) * | 2020-03-31 | 2020-06-16 | 苏州普茨迈精密航空设备有限公司 | Vehicle damping noise-reducing reinforcing damping fin and preparation process thereof |
| CN114929797A (en) * | 2020-09-23 | 2022-08-19 | 森高工业有限公司 | Rubber composition for vehicle tire inner liner |
| CN112029203A (en) * | 2020-09-24 | 2020-12-04 | 广东邦达实业有限公司 | High-damping rubber material with high vibration damping performance |
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