CN106519537A - Activated zinc oxide-containing nitrile rubber composite damping material for automobile and preparation method of nitrile rubber composite damping material - Google Patents
Activated zinc oxide-containing nitrile rubber composite damping material for automobile and preparation method of nitrile rubber composite damping material Download PDFInfo
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- CN106519537A CN106519537A CN201610882264.3A CN201610882264A CN106519537A CN 106519537 A CN106519537 A CN 106519537A CN 201610882264 A CN201610882264 A CN 201610882264A CN 106519537 A CN106519537 A CN 106519537A
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- nitrile rubber
- damping material
- zinc oxide
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L51/00—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L51/04—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers grafted on to rubbers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F279/00—Macromolecular compounds obtained by polymerising monomers on to polymers of monomers having two or more carbon-to-carbon double bonds as defined in group C08F36/00
- C08F279/02—Macromolecular compounds obtained by polymerising monomers on to polymers of monomers having two or more carbon-to-carbon double bonds as defined in group C08F36/00 on to polymers of conjugated dienes
- C08F279/04—Vinyl aromatic monomers and nitriles as the only monomers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
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- Chemical Kinetics & Catalysis (AREA)
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- Polymers & Plastics (AREA)
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- Vibration Prevention Devices (AREA)
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Abstract
The invention discloses an activated zinc oxide-containing nitrile rubber composite damping material for an automobile. The nitrile rubber composite damping material is prepared from the following raw materials in parts by weight: 45 to 60 parts of nitrile rubber, 25 to 40 parts of chlorinated butyl rubber, 125 to 170 parts of tetrahydrofuran, 47 to 64 parts of maleic anhydride, 2 to 4 parts of benzoyl peroxide, a proper amount of ethanol, 1 to 3 parts of sodium hypophosphite hydroxide, a proper amount of xylene, 23 to 32 parts of soft wood cellulose, 1 to 2 parts of stearic acid, 2 to 6 parts of carbon black, 1 to 2 parts of sulphur, 2 to 5 parts of naphthenic oil and 5 to 11 parts of activated zinc oxide. In the invention, the nitrile rubber is grafted by using the maleic anhydride, and then is grafted and compounded with the soft wood cellulose; on one hand, internal friction resistance of rubber molecular chain movement is enhanced, and the damping performance of the material is enhanced; on the other hand, the sound absorption and noise reducing performance of the damping material is improved by utilizing the characteristics of the soft wood cellulose, and the nitrile rubber damping material with the excellent damping and noise reducing performance is prepared.
Description
Technical field
The invention belongs to auto parts preparation field, and in particular to a kind of automobile is multiple with the nitrile rubber containing activated zinc oxide
Close damping material and preparation method thereof.
Background technology
Damping material is that a kind of material of damping noise reduction developed in recent years can be converted into heat vibration and acoustic energy
The new function material that can be dissipated, extensively applies in various plant equipment, front panel especially in the automobile seat room, car
There is application at the 8-12 position such as door, car roof, car bottom plate, boot, therefore researches and develops the new of excellent combination property
Efficient Damping material has become the focus of domestic and international concern.
What Tian Min, Lu et al. were delivered《The preparation and performance study of blending type wide temperature zone high damping elastomeric material》One is literary
In, using having intensive pending methyl group, the chlorinated scoline of low pole to be blended with highly polar nitrile rubber in molecular structure, make
Binary CIIR/NBR blend is obtained, due to sterically hindered effect big in low pole rubber structure and the pressure after vulcanization crosslinking
Winding, it will increase the internal friction resistance of polar rubber strand activity, cause molecular chain movement to be obstructed, prepare wide temperature range
Damping material.
In nature, cork is a kind of very excellent material of damping performance, and it is the crust product of cork tree, is had
The performances such as good elasticity, sealing, heat-insulated, sound insulation, insulation, wear-resisting, corrosion resistance, protection against the tide, fire prevention, damping, can be used as ground
Plate, bottle stopper and woodwind instrument sealing gasket, packaging and energy absorbing material, heat-barrier material, damping damping material etc., are a kind of many work(
Can natural material.
Therefore, the present invention is grafted nitrile rubber using maleic anhydride, compounds with cork fibrous grafting then, on the one hand strengthens
On the other hand the internal friction resistance of rubber molecular chain activity, the damping capacity of reinforcing material is improved using the characteristic of cork fibrous
The sqouynd absorption lowering noise performance of damping material, the nitrile rubber damping material damping noise reduction excellent performance of preparation.
The content of the invention
The invention aims to solve the problems, such as that existing damping material damping, sound absorbing capabilities are not enough, a kind of vapour is improved
Automobile-used nitrile rubber composite damping material containing activated zinc oxide and preparation method thereof.
A kind of nitrile rubber composite damping material of automobile containing activated zinc oxide, is made up of the raw material of following weight portion：
Nitrile rubber 45-60 parts, chlorinated scoline 25-40 parts, tetrahydrofuran 125-170 parts, maleic anhydride 47-64 parts, peroxidating
Benzoyl 2-4 parts, appropriate amount of ethanol, hydroxide sodium hypophosphite 1-3 parts, appropriate dimethylbenzene, cork fibrous 23-32 parts, stearic acid 1-2
Part, white carbon black 2-6 parts, sulfur 1-2 parts, naphthenic oil 2-5 parts, activated zinc oxide 5-11 parts.
Comprise the following steps that：
（1）Maleic anhydride is grafted nitrile rubber（MAH-g-NBR）Preparation：
Nitrile rubber is dissolved completely in tetrahydrofuran, maleic anhydride is added dropwise over benzoyl peroxide with Dropping funnel
Mixed solution, is passed through nitrogen protection, is warming up to 60-72 DEG C, and isothermal reaction 6-9 hours go out graft product with ethanol precipitation afterwards,
With washing with alcohol for several times, the graft product after washing is placed in 38-45 DEG C of vacuum drying oven and is dried, that is, obtain MAH-g-NBR,
It is standby；
（2）MAH-g-NBR is grafted cork fibrous：
Dimethylbenzene, hydroxide sodium hypophosphite and step is added in the boiling flask equipped with condensing tube（1）The MAH-g- for obtaining
NBR, afterwards by the abundant cork fibrous immersion mixed solution being dried, control temperature reacts 2-4 hours at 125-140 DEG C,
After the completion of reaction, solvent is removed with Soxhlet extractor, dried to constant weight in 95-105 DEG C, obtain final product MAH-g-NBR grafting corks fine
Dimension；
（3）Mixing：
Under the conditions of 20-30 DEG C, by step（2）The MAH-g-NBR for obtaining is grafted cork fibrous, chlorinated scoline mix homogeneously
Plasticate on a mill 3-8 minutes, be subsequently adding stearic acid, white carbon black mixing 10-30 minutes, sequentially add naphthenic oil, work afterwards
Property Zinc Oxide, sulfur mixing it is uniform, be prepared into elastomeric compound；
（4）Sulfuration：
By step（3）7-9 hours are stood after the thin pass-out piece of resulting elastomeric compound, on vulcanizing press at 160-190 DEG C
Hot press moulding vulcanizes 20-40 minutes, and a kind of nitrile rubber composite damping material of automobile containing activated zinc oxide is obtained.
Wherein, described cork fibrous are formed with the white softwood pulp plate mechanical dissociation of useless industrial source and dispersion, its length
Distribution 2mm-3.5mm, width distribution are 34.2 μm -73.1 μm, and length-width ratio is 72.6.
Compared with prior art, the present invention has advantages below：
（1）The present invention carries out graft modification first by maleic anhydride monomer to nitrile rubber, changes the polarity of nitrile rubber, increases
The internal friction resistance of additive polarity nitrile rubber strand activity, causes molecular chain movement to be obstructed, and molecule interchain frictional heat increases,
Damping capacity is more excellent.
（2）There are many gauffers on cork cell wall, can greatly alleviate compression, therefore elastic return is special
Good, the special cellularity of cork fibrous can weaken flat ripple and propagate in addition, enable in particular to the propagation of noise-reducing sound wave, thus soft
The sound absorption properties of wood utilizes this characteristic of cork fibrous very well in the present invention, be grafted nitrile rubber using maleic anhydride（MAH-g-
NBR）Cork fibrous are carried out with graft modification, the compatibility of the cork fibrous in rubber matrix is improved, subtracting for damping material is improved
Shake, sqouynd absorption lowering noise performance, can be effectively improved the comfort level of environment inside car, be conducive to the physical and mental health of people.
（3）The addition of a small amount of naphthenic oil improves alternate blend uniformity, reduces the interfacial tension of blend phase, increases
Plus the mutually interaction in interval, interfacial adhesion strength is improve, the compatibility of component is improved, damping capacity is improved, while with
Activated zinc oxide compounding improves hardness and the stress at definite elongation of material.
Specific embodiment
A kind of nitrile rubber composite damping material of automobile containing activated zinc oxide, is made up of the raw material of following weight portion：
Nitrile rubber 56, chlorinated scoline 34, tetrahydrofuran 160, maleic anhydride 60, benzoyl peroxide 4, appropriate amount of ethanol, hydrogen-oxygen
Change sodium hypophosphite 3, appropriate dimethylbenzene, cork fibrous 31, stearic acid 2, white carbon black 4, sulfur 2, naphthenic oil 4, activated zinc oxide 8.
Comprise the following steps that：
（1）Maleic anhydride is grafted nitrile rubber（MAH-g-NBR）Preparation：
Nitrile rubber is dissolved completely in tetrahydrofuran, maleic anhydride is added dropwise over benzoyl peroxide with Dropping funnel
Mixed solution, is passed through nitrogen protection, is warming up to 70 DEG C, and isothermal reaction 8 hours goes out graft product with ethanol precipitation afterwards, uses second
Alcohol is washed for several times, the graft product after washing is placed in 40 DEG C of vacuum drying ovens and is dried, that is, obtain MAH-g-NBR, standby；
（2）MAH-g-NBR is grafted cork fibrous：
Dimethylbenzene, hydroxide sodium hypophosphite and step is added in the boiling flask equipped with condensing tube（1）The MAH-g- for obtaining
NBR, afterwards by the abundant cork fibrous immersion mixed solution being dried, control temperature is reacted 3 hours at 130 DEG C, has reacted
Cheng Hou, removes solvent with Soxhlet extractor, dries to constant weight in 100 DEG C, obtains final product MAH-g-NBR grafting cork fibrous；
（3）Mixing：
Under the conditions of 28 DEG C, by step（2）The MAH-g-NBR for obtaining is grafted cork fibrous, chlorinated scoline mix homogeneously and exists
Plasticate in mill 7 minutes, be subsequently adding stearic acid, white carbon black and knead 20 minutes, sequentially add naphthenic oil, active oxidation afterwards
Zinc, sulfur mixing are uniform, are prepared into elastomeric compound；
（4）Sulfuration：
By step（3）After the thin pass-out piece of resulting elastomeric compound stand 8 hours, on vulcanizing press at 170 DEG C high temperature mould
Pressure sulfuration 30 minutes, is obtained a kind of nitrile rubber composite damping material of automobile containing activated zinc oxide.
Wherein, described cork fibrous are formed with the white softwood pulp plate mechanical dissociation of useless industrial source and dispersion, its length
Distribution 2mm-3.5mm, width distribution are 34.2 μm -73.1 μm, and length-width ratio is 72.6.
Performance test：
Prepare according to embodiment and its material is tested, it is as a result as follows：
Density：1.178g/cm3, damping performance（23 DEG C, 200HZ）：0.16, fracture elongation：592%, tensile strength：
141Mpa, resistance to ag(e)ing：4 grades, light fastness aging：4 grades, roll processability：Well.
Claims (3)
1. a kind of automobile with containing activated zinc oxide nitrile rubber composite damping material, it is characterised in that by following weight portion
Raw material is constituted：Nitrile rubber 45-60 parts, chlorinated scoline 25-40 parts, tetrahydrofuran 125-170 parts, maleic anhydride 47-64
Part, benzoyl peroxide 2-4 parts, appropriate amount of ethanol, hydroxide sodium hypophosphite 1-3 parts, appropriate dimethylbenzene, cork fibrous 23-32 parts,
Stearic acid 1-2 parts, white carbon black 2-6 parts, sulfur 1-2 parts, naphthenic oil 2-5 parts, activated zinc oxide 5-11 parts.
2. preparation of a kind of automobile according to claims 1 with the nitrile rubber composite damping material containing activated zinc oxide
Method, it is characterised in that comprise the following steps that：
（1）Maleic anhydride is grafted nitrile rubber（MAH-g-NBR）Preparation：
Nitrile rubber is dissolved completely in tetrahydrofuran, maleic anhydride is added dropwise over benzoyl peroxide with Dropping funnel
Mixed solution, is passed through nitrogen protection, is warming up to 60-72 DEG C, and isothermal reaction 6-9 hours go out graft product with ethanol precipitation afterwards,
With washing with alcohol for several times, the graft product after washing is placed in 38-45 DEG C of vacuum drying oven and is dried, that is, obtain MAH-g-NBR,
It is standby；
（2）MAH-g-NBR is grafted cork fibrous：
Dimethylbenzene, hydroxide sodium hypophosphite and step is added in the boiling flask equipped with condensing tube（1）The MAH-g- for obtaining
NBR, afterwards by the abundant cork fibrous immersion mixed solution being dried, control temperature reacts 2-4 hours at 125-140 DEG C,
After the completion of reaction, solvent is removed with Soxhlet extractor, dried to constant weight in 95-105 DEG C, obtain final product MAH-g-NBR grafting corks fine
Dimension；
（3）Mixing：
Under the conditions of 20-30 DEG C, by step（2）The MAH-g-NBR for obtaining is grafted cork fibrous, chlorinated scoline mix homogeneously
Plasticate on a mill 3-8 minutes, be subsequently adding stearic acid, white carbon black mixing 10-30 minutes, sequentially add naphthenic oil, work afterwards
Property Zinc Oxide, sulfur mixing it is uniform, be prepared into elastomeric compound；
（4）Sulfuration：
By step（3）7-9 hours are stood after the thin pass-out piece of resulting elastomeric compound, on vulcanizing press at 160-190 DEG C
Hot press moulding vulcanizes 20-40 minutes, and a kind of nitrile rubber composite damping material of automobile containing activated zinc oxide is obtained.
3. a kind of automobile according to claims 1,2 with containing activated zinc oxide nitrile rubber composite damping material system
Preparation Method, it is characterised in that described cork fibrous are formed with the white softwood pulp plate mechanical dissociation of useless industrial source and dispersion, its
Length distribution range 2mm-3.5mm, width distribution are 34.2 μm -73.1 μm, and length-width ratio is 72.6.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610882264.3A CN106519537A (en) | 2016-10-10 | 2016-10-10 | Activated zinc oxide-containing nitrile rubber composite damping material for automobile and preparation method of nitrile rubber composite damping material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610882264.3A CN106519537A (en) | 2016-10-10 | 2016-10-10 | Activated zinc oxide-containing nitrile rubber composite damping material for automobile and preparation method of nitrile rubber composite damping material |
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| CN106519537A true CN106519537A (en) | 2017-03-22 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102775659A (en) * | 2012-07-16 | 2012-11-14 | 华南理工大学 | Method for preparing wide-temperature-range high-frequency high-damping rubber materials |
| CN102964670A (en) * | 2012-11-27 | 2013-03-13 | 南通王子家居用品有限公司 | Production method of damping sound absorption material containing kapok fiber |
| CN103450611A (en) * | 2013-08-02 | 2013-12-18 | 青岛爱尔家佳新材料有限公司 | Damping material and preparation method thereof |
| CN103642093A (en) * | 2013-11-01 | 2014-03-19 | 华南理工大学 | Nitrile rubber/modified silica-gel powder blend and preparation method thereof |
| CN104788836A (en) * | 2015-03-29 | 2015-07-22 | 安徽微威胶件集团有限公司 | Preparation method of high-damping rubber material |
-
2016
- 2016-10-10 CN CN201610882264.3A patent/CN106519537A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102775659A (en) * | 2012-07-16 | 2012-11-14 | 华南理工大学 | Method for preparing wide-temperature-range high-frequency high-damping rubber materials |
| CN102964670A (en) * | 2012-11-27 | 2013-03-13 | 南通王子家居用品有限公司 | Production method of damping sound absorption material containing kapok fiber |
| CN103450611A (en) * | 2013-08-02 | 2013-12-18 | 青岛爱尔家佳新材料有限公司 | Damping material and preparation method thereof |
| CN103642093A (en) * | 2013-11-01 | 2014-03-19 | 华南理工大学 | Nitrile rubber/modified silica-gel powder blend and preparation method thereof |
| CN104788836A (en) * | 2015-03-29 | 2015-07-22 | 安徽微威胶件集团有限公司 | Preparation method of high-damping rubber material |
Non-Patent Citations (3)
| Title |
|---|
| 姚棋 等: "反应增容型马来酸酐／丁腈橡胶接枝共聚物的制备", 《合肥橡胶工业》 * |
| 揣成智 等: "软木纤维增强PP复合材料的研究", 《塑料科技》 * |
| 董智贤: "马来酸酐接枝改性天然橡胶的制备及应用研究", 《华南理工大学博士学位论文》 * |
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Application publication date: 20170322 |