CN106519704A - Nitrile rubber damping material with excellent bending resistance and used for automobile and preparation method thereof - Google Patents
Nitrile rubber damping material with excellent bending resistance and used for automobile and preparation method thereof Download PDFInfo
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- CN106519704A CN106519704A CN201610882258.8A CN201610882258A CN106519704A CN 106519704 A CN106519704 A CN 106519704A CN 201610882258 A CN201610882258 A CN 201610882258A CN 106519704 A CN106519704 A CN 106519704A
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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
- C08L87/005—Block or graft polymers not provided for in groups C08L1/00 - C08L85/04
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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
- C08G81/02—Macromolecular compounds obtained by interreacting polymers in the absence of monomers, e.g. block polymers at least one of the polymers being obtained by reactions involving only carbon-to-carbon unsaturated bonds
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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
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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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
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
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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 nitrile rubber damping material with excellent bending resistance and used for automobile. The nitrile rubber damping material is composed of the following raw materials in parts by weight: 43 to 58 parts of nitrile rubber, 26 to 37 parts of chlorinated butyl rubber, 110 to 167 parts of tetrahydrofuran, 42 to 63 parts of maleic anhydride, 1 to 4 parts of benzoperoxide, a proper amount of ethanol, 1 to 3 parts of sodium hypophosphite hydroxide, a proper amount of xylene, 23 to 32 parts of softwood fiber, 1 to 2 parts of stearic acid, 3 to 6 parts of carbon black, 1 to 2 parts of sulfur, 4 to 7 parts of heavy calcium powder, 3 to 4 parts of glass beads and 2 to 4 parts of polyisobutene. According to the invention, the nitrile rubber is grafted by using the maleic anhydride, and the maleic anhydride grafted nitrile rubber is compounded with the softwood fiber by grafting, so the internal friction resistance of rubber molecular chain activity is reinforced, and the damping performance of the material is strengthened; meanwhile, by utilizing the characteristics of the softwood fiber, sound-absorbing and noise-reducing performances of the damping material are improved, and the nitrile rubber damping material with excellent damping and noise-reducing performances is prepared.
Description
Technical field
The invention belongs to auto parts preparation field, and in particular to a kind of automobile excellent nitrile rubber of bending resistance
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
Excellent nitrile rubber damping material of automobile-used bending resistance and preparation method thereof.
A kind of automobile excellent nitrile rubber damping material of bending resistance, is made up of the raw material of following weight portion:Fourth
Nitrile rubber 43-58 parts, chlorinated scoline 26-37 parts, tetrahydrofuran 110-167 parts, maleic anhydride 42-63 parts, benzoyl peroxide
- 4 parts of formyl chloride-1, 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 3-6 parts, sulfur 1-2 parts, dicalcium powder 4-7 parts, glass microballoon 3-4 parts, polyisobutylene 2-4 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:
1., under the conditions of 20-30 DEG C, by step(2)The MAH-g-NBR for obtaining is grafted cork fibrous, chlorinated scoline, Hard Fat
Sour mix homogeneously is plasticated 20-30 minutes on a mill, obtains broken-down rubber;
2. polyisobutylene reaction 8-14 minutes are added afterwards, add dicalcium powder, glass microballoon, white carbon black mixing 20-40 minutes,
Add sulfur mixing uniform afterwards, 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 automobile excellent nitrile rubber damping material of bending resistance 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)Nitrile rubber compound can and the good combination of polyisobutylene, increase the effect of the vibration and noise reducing of damping material,
Hollow glass microbead, dicalcium powder is added in damping material in addition, can improve or improve resistance to water, the pressure resistance of material
Degree, shrinkage factor and impact strength, therefore the fiber damping material fiber damping material that the present invention is provided not only has good resisting
Curved and shock resistance, is also significantly improved in damping property, ageing-resistant performance.
Specific embodiment
A kind of automobile excellent nitrile rubber damping material of bending resistance, is made up of the raw material of following weight portion:Fourth
Nitrile rubber 55, chlorinated scoline 35, tetrahydrofuran 160, maleic anhydride 60, benzoyl peroxide 3, appropriate amount of ethanol, hydroxide
Sodium hypophosphite 2, appropriate dimethylbenzene, cork fibrous 30, stearic acid 2, white carbon black 4, sulfur 2, dicalcium powder 5, glass microballoon 3, poly- isobutyl
Alkene 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 28 DEG C, by step(2)The MAH-g-NBR for obtaining is grafted cork fibrous, chlorinated scoline, stearic acid
Mix homogeneously is plasticated 28 minutes on a mill, obtains broken-down rubber;
2., add polyisobutylene to react afterwards 12 minutes, add dicalcium powder, glass microballoon, white carbon black and knead 30 minutes, Zhi Houjia
Enter sulfur mixing uniform, be 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 automobile excellent nitrile rubber damping material of bending resistance.
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:1.174g/cm3, damping performance(23 DEG C, 200HZ):0.13, fracture elongation:581%, tensile strength:
144Mpa, resistance to ag(e)ing:4 grades, light fastness aging:4 grades, roll processability:Well.
Claims (3)
1. a kind of automobile excellent nitrile rubber damping material of bending resistance, it is characterised in that by the original of following weight portion
Material composition:Nitrile rubber 43-58 parts, chlorinated scoline 26-37 parts, tetrahydrofuran 110-167 parts, maleic anhydride 42-63 parts,
Benzoyl peroxide 1-4 parts, appropriate amount of ethanol, hydroxide sodium hypophosphite 1-3 parts, appropriate dimethylbenzene, cork fibrous 23-32 parts, firmly
Fat acid 1-2 parts, white carbon black 3-6 parts, sulfur 1-2 parts, dicalcium powder 4-7 parts, glass microballoon 3-4 parts, polyisobutylene 2-4 parts.
2. preparation side of a kind of automobile according to claims 1 with the excellent nitrile rubber damping material of bending resistance
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 20-30 DEG C, by step(2)The MAH-g-NBR for obtaining is grafted cork fibrous, chlorinated scoline, Hard Fat
Sour mix homogeneously is plasticated 20-30 minutes on a mill, obtains broken-down rubber;
2. polyisobutylene reaction 8-14 minutes are added afterwards, add dicalcium powder, glass microballoon, white carbon black mixing 20-40 minutes,
Add sulfur mixing uniform afterwards, 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 automobile excellent nitrile rubber damping material of bending resistance is obtained.
3. preparation of a kind of automobile according to claims 1,2 with the excellent nitrile rubber damping material of bending resistance
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.
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CN201610882258.8A CN106519704A (en) | 2016-10-10 | 2016-10-10 | Nitrile rubber damping material with excellent bending resistance and used for automobile and preparation method thereof |
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CN201610882258.8A CN106519704A (en) | 2016-10-10 | 2016-10-10 | Nitrile rubber damping material with excellent bending resistance and used for automobile and preparation method thereof |
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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 CN201610882258.8A patent/CN106519704A/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 |