CN106519132A - High bonding strength nitrile rubber damping material for car accessories and preparation method thereof - Google Patents
High bonding strength nitrile rubber damping material for car accessories and preparation method thereof Download PDFInfo
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- CN106519132A CN106519132A CN201610882511.XA CN201610882511A CN106519132A CN 106519132 A CN106519132 A CN 106519132A CN 201610882511 A CN201610882511 A CN 201610882511A CN 106519132 A CN106519132 A CN 106519132A
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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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G81/00—Macromolecular compounds obtained by interreacting polymers in the absence of monomers, e.g. block polymers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/24—Crosslinking, e.g. vulcanising, of macromolecules
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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
- C08L87/00—Compositions of unspecified macromolecular compounds, obtained otherwise than by polymerisation reactions only involving unsaturated carbon-to-carbon bonds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2387/00—Characterised by the use of unspecified macromolecular compounds, obtained otherwise than by polymerisation reactions only involving unsaturated carbon-to-carbon bonds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/26—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers modified by chemical after-treatment
- C08J2423/28—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers modified by chemical after-treatment by reaction with halogens or halogen-containing compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2457/00—Characterised by the use of unspecified polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C08J2457/02—Copolymers of mineral oil hydrocarbons
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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
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Abstract
The invention discloses a high bonding strength nitrile rubber damping material for car accessories. The damping material is composed of the following raw materials in parts by weight: 35 to 55 parts of nitrile rubber, 28 to 37 parts of chlorinated butyl rubber, 116 to 168 parts of tetrahydrofuran, 40 to 58 parts of maleic anhydride, 2 to 6 parts of benzoyl peroxide, a proper amount of ethanol, 1 to 3 parts of sodium hypophosphite hydroxide, a proper amount of xylene, 27 to 38 parts of soft wood fiber, 1 to 2 parts of stearic acid, 3 to 8 parts of carbon black, 1 to 2 parts of sulfur, 15 to 25 parts of C5 resin, 2 to 6 parts of mica, and 1 to 5 parts of calcium carbonate. According to the preparation method, maleic anhydride is grafted onto nitrile rubber, then nitrile rubber is compounded with soft wood fibers, on one aspect, the inner friction force of the movement of rubber molecule chains is enhanced, the damping performance of the material is enhanced, on the other aspect, the characteristics of soft wood fibers are used to strengthen the sound absorbing and noise reducing performance of the damping material, and thus the damping material has an excellent damping and noise reducing performance.
Description
Technical field
The invention belongs to auto parts preparation field, and in particular to a kind of car kits have the nitrile rubber of high bond strength
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, prepares a kind of nitrile rubber damping material of damping noise reduction excellent performance.
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, there is provided a kind of vapour
Automobile-used nitrile rubber damping material with high bond strength and preparation method thereof.
A kind of car kits have the nitrile rubber damping material of high bond strength, are made up of the raw material of following weight portion：Fourth
Nitrile rubber 35-55 parts, chlorinated scoline 28-37 parts, tetrahydrofuran 116-168 parts, maleic anhydride 40-58 parts, benzoyl peroxide
Formyl 2-6 parts, appropriate amount of ethanol, hydroxide sodium hypophosphite 1-3 parts, appropriate dimethylbenzene, cork fibrous 27-38 parts, stearic acid 1-2
Part, white carbon black 3-8 parts, sulfur 1-2 parts, C5 resin 15-25 parts, Muscovitum 2-6 parts, Calcium Carbonate 1-5 part.
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：
1., under the conditions of 60-100 DEG C, by step（2）The MAH-g-NBR for obtaining is grafted cork fibrous, chlorinated scoline mixing
Uniformly plasticate on a mill 3-8 minutes；
2. C5 resins mixing 8-18 minutes, are added, stearic acid, white carbon black, Muscovitum mixing 10-30 minutes, Zhi Houjia is subsequently adding
Enter sulfur mixing 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 car kits are obtained the nitrile rubber damping material of high bond strength.
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 use of the layer structure filler such as Muscovitum, Calcium Carbonate, the damping capacity and high temperature for greatly improving product keep shape
The ability of shape, secondly the application of the C5 resins of long-chain branch, can improve adhesive property, and the high bonding of damping fin room temperature for obtaining is strong
Degree, temperature flowing are preferable with high stickiness.
Specific embodiment
A kind of car kits have the nitrile rubber damping material of high bond strength, are made up of the raw material of following weight portion：Fourth
Nitrile rubber 52, chlorinated scoline 34, tetrahydrofuran 160, maleic anhydride 53, benzoyl peroxide 4, appropriate amount of ethanol, hydroxide
Sodium hypophosphite 3, appropriate dimethylbenzene, cork fibrous 31, stearic acid 2, white carbon black 4, sulfur 2, C5 resins 23, Muscovitum 4, Calcium Carbonate 3.
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：
1., under the conditions of 70 DEG C, by step（2）The MAH-g-NBR for obtaining is grafted cork fibrous, chlorinated scoline mix homogeneously
Plasticate on a mill 6 minutes；
2. C5 resins, are added to knead 15 minutes, stearic acid, white carbon black, Muscovitum is subsequently adding and is kneaded 20 minutes, add sulfur afterwards
Mixing is uniform, is 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, a kind of car kits are obtained the nitrile rubber damping material of high bond strength.
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：1.188g/cm3, damping performance（23 DEG C, 200HZ）：0.15, fracture elongation：587%, tensile strength：
147Mpa, resistance to ag(e)ing：4 grades, light fastness aging：4 grades, roll processability：Well.
Claims (3)
1. a kind of car kits have the nitrile rubber damping material of high bond strength, it is characterised in that by the original of following weight portion
Material composition：Nitrile rubber 35-55 parts, chlorinated scoline 28-37 parts, tetrahydrofuran 116-168 parts, maleic anhydride 40-58 parts,
Benzoyl peroxide 2-6 parts, appropriate amount of ethanol, hydroxide sodium hypophosphite 1-3 parts, appropriate dimethylbenzene, cork fibrous 27-38 parts, firmly
Fat acid 1-2 parts, white carbon black 3-8 parts, sulfur 1-2 parts, C5 resin 15-25 parts, Muscovitum 2-6 parts, Calcium Carbonate 1-5 part.
2. a kind of car kits according to claims 1 have the preparation side of the nitrile rubber damping material of high bond strength
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：
1., under the conditions of 60-100 DEG C, by step（2）The MAH-g-NBR for obtaining is grafted cork fibrous, chlorinated scoline mixing
Uniformly plasticate on a mill 3-8 minutes；
2. C5 resins mixing 8-18 minutes, are added, stearic acid, white carbon black, Muscovitum mixing 10-30 minutes, Zhi Houjia is subsequently adding
Enter sulfur mixing 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 car kits are obtained the nitrile rubber damping material of high bond strength.
3. a kind of car kits according to claims 1,2 have the preparation of the nitrile rubber damping material of high bond strength
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
Degree distribution 2mm-3.5mm, width distribution is 34.2 μm -73.1 μm, and length-width ratio is 72.6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610882511.XA CN106519132A (en) | 2016-10-10 | 2016-10-10 | High bonding strength nitrile rubber damping material for car accessories and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610882511.XA CN106519132A (en) | 2016-10-10 | 2016-10-10 | High bonding strength nitrile rubber damping material for car accessories and preparation method thereof |
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| Publication Number | Publication Date |
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| CN106519132A true CN106519132A (en) | 2017-03-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610882511.XA Withdrawn CN106519132A (en) | 2016-10-10 | 2016-10-10 | High bonding strength nitrile rubber damping material for car accessories and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116141703A (en) * | 2023-04-18 | 2023-05-23 | 天津爱思达航天科技股份有限公司 | Polyurethane toughened epoxy damping composite material and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN105315521A (en) * | 2015-11-13 | 2016-02-10 | 航天材料及工艺研究所 | High-damping material for high-temperature co-curing with composite material and preparation method of high-damping material |
-
2016
- 2016-10-10 CN CN201610882511.XA patent/CN106519132A/en not_active Withdrawn
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN105315521A (en) * | 2015-11-13 | 2016-02-10 | 航天材料及工艺研究所 | High-damping material for high-temperature co-curing with composite material and preparation method of high-damping material |
Non-Patent Citations (2)
| 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", 《合成橡胶工业》 * |
| 揣成智等，: "软木纤维增强PP复合材料的研究", 《塑料科技》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116141703A (en) * | 2023-04-18 | 2023-05-23 | 天津爱思达航天科技股份有限公司 | Polyurethane toughened epoxy damping composite material and preparation method thereof |
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Application publication date: 20170322 |
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