CN105754267B - A kind of preparation method of the magnetorheological materials with negative Poisson characteristics - Google Patents
A kind of preparation method of the magnetorheological materials with negative Poisson characteristics Download PDFInfo
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- CN105754267B CN105754267B CN201610130280.7A CN201610130280A CN105754267B CN 105754267 B CN105754267 B CN 105754267B CN 201610130280 A CN201610130280 A CN 201610130280A CN 105754267 B CN105754267 B CN 105754267B
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
- C08K3/346—Clay
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/01—Magnetic additives
Abstract
The present invention relates to a kind of preparation method for the magnetorheological materials for having and bearing Poisson characteristics, by 8 100 parts of powder polytetrafluoroethylene (PTFE), 10 70 parts of carbonyl iron dusts and 5 20 parts of fillers；Dry water removal；Mixing plus 10 20 parts of processing aids, are well mixed, obtain mixture of viscous form；Add in plunger piston extrusion machine extrusion bar, two roll calender and 1.50mm thick sheets are made；12h is dried respectively at 100 DEG C, 200 DEG C；It is introduced into high temperature draw-gear, 150 DEG C of stretchings and thermal finalization, draw ratio 10-30；Pull out and cool to normal temperature, produce the magnetorheological materials of the characteristic with negative poisson's ratio.It is 500%~1090% for -12~-6.5, magnetic rheology effect to use the negative poisson's ratio of material prepared by the present invention；With excellent sound absorbing capabilities, in 100Hz-10000Hz frequency bands, acoustic absorptivity reaches 0.9 0.99, is much better than the sound absorbing capabilities of existing sound-absorbing material.
Description
Technical field
The invention belongs to sound-absorbing material field, and in particular to a kind of preparation of the magnetorheological materials with negative poisson's ratio characteristic
Method.
Background technology
The research and design of sound-absorbing material are the basic and key techniques of industry and engine noise control, and it is for anti-
Controlling noise pollution and national defense safety all has particularly significant all strategic importances and scientific value.Try to improve the sound absorption properties of material
Can, and the sound sucting band of material is widened, it is always the important topic in sound-absorbing material research and engineer applied.
The sound-absorbing material sound absorbing capabilities developed at present are poor, and sound sucting band is smaller, are on the one hand due to vibration and noise reducing material
The acoustic impedance of material can not match with medium acoustic resistance anti-adaptive in wider frequency band, so as to cause sound wave in wider frequency range
It is interior to smoothly enter inside sound-absorbing material, on the other hand it is due to that vibration damping vibration and noise reducing material damping drain performance is poor,
It is unable to efficient absorption acoustic wave energy.Magnetorheological elastomer material is a kind of new function material, and its rheological behavior is controllable and reversible,
Response speed is very fast (Millisecond).Be typically characterised by material acoustic impedance can according to external drive frequency adaptively changing,
But sound absorbing capabilities are not ideal enough.And the material of some special constructions of discovered in recent years has Negative poisson's ratio, such material
With excellent damping capacity, but acoustic impedance can not be according to external drive frequency adaptive change, therefore, simply in limited frequency
Section has excellent sound absorbing capabilities.
The content of the invention
The purpose of the present invention is to be directed to above-mentioned present situation, it is desirable to provide a kind of tool with excellent sound absorption performance in broadband
There is the preparation method of the magnetorheological materials of negative Poisson characteristics.
The embodiment of the object of the invention is prepared by a kind of preparation method of the magnetorheological materials with negative Poisson characteristics
Comprise the following steps that：
1) according to composition weight than claiming 80-100 parts of powder polytetrafluoroethylene (PTFE), 10-70 parts of carbonyl iron dusts and 5-20 parts of fillers；
Then powder polytetrafluoroethylene (PTFE), carbonyl iron dust and filler are placed to 24 ± 1h in 35 DEG C of environment and dries water removal；
The filler is the one or several kinds in kaolin, diatomite, montmorillonite；
2) by through step 1) dry powder polytetrafluoroethylene (PTFE), carbonyl iron dust and filler mixed, then add 10-20
Part processing aid, is well mixed, obtains mixture of viscous form；
The processing aid is gasoline or toluene；
3) by step 2) gained mixture of viscous form addition plunger piston extrusion machine, extrusion bar, then in two roll calender
The sheet material of 1.50mm thickness is made；Dried at 100 DEG C in 12h, 200 DEG C of environment and dry 12h；
4) will be through step 3) product of extrusion is introduced into high temperature draw-gear, stretching is carried out in 150 DEG C of environment and hot
Sizing, draw ratio is 10-30；
5) treat through step 4) material of stretch processing pulls out from high temperature draw-gear, slowly cools to normal temperature, i.e.,
The magnetorheological materials of the characteristic with negative poisson's ratio can be obtained.
The present invention carries out the material with negative poisson's ratio characteristic and magnetic rheology elastic body perfect compound, the material use
The intelligent controllable characteristics of magnetorheological materials change its acoustic impedance to adapt to outside acoustic impedance, and more sound are made in wider frequency band
Ripple enters material internal, and more acoustic wave energies are converted into heat energy and high using the high damping properties of Negative poisson's ratio material
Effect absorbs.The material can not only improve sound absorbing capabilities, and can widen sound sucting band, so as to improve material in broadband
In the range of sound absorbing capabilities.
Use the negative poisson's ratio of material prepared by the present invention be 500% for -12~-6.5, magnetic rheology effect~
1090%；With excellent sound absorbing capabilities, in 100Hz-10000Hz frequency bands, acoustic absorptivity reaches 0.9-0.99, much excellent
In the sound absorbing capabilities of existing sound-absorbing material.
Embodiment
The present invention is by 80-100 parts of powder polytetrafluoroethylene (PTFE), 10-70 parts of carbonyl iron dusts and 5-20 parts of fillers；Dry water removal；
Mixing adds 10-20 parts of processing aids, is well mixed, obtains mixture of viscous form；Add plunger piston extrusion machine extrusion bar, double roller
1.50mm thick sheets are made in calender；12h is dried respectively at 100 DEG C, 200 DEG C；It is introduced into high temperature draw-gear, at 150 DEG C
Stretching and thermal finalization, draw ratio is 10；Pull out and slowly cool to normal temperature, you can there must be the magnetic of the characteristic of negative poisson's ratio
Rheo-material.
The present invention is described in detail with specific embodiment below.
Embodiment 1
1) 80 parts of powder polytetrafluoroethylene (PTFE), 10 parts of carbonyl iron dusts and 10 parts of diatomite are claimed by weight；Then by powder
Polytetrafluoroethylene (PTFE), carbonyl iron dust and filler place 24 ± 1h in 35 DEG C of environment and dry water removal；
2) by through step 1) dry powder polytetrafluoroethylene (PTFE), carbonyl iron dust and filler mixed, then addition 20 parts
Gasoline, is well mixed, obtains mixture of viscous form；
3) by step 2) gained mixture of viscous form add plunger piston extrusion machine in enter extrusion bar, then in two roll calender
In the sheet material of 1.50mm thickness is made；Dried at 100 DEG C in 12h, 200 DEG C of environment and dry 12h, to remove the auxiliary agent of residual
4) will be through step 3) product of extrusion is introduced into high temperature draw-gear, stretching is carried out in 150 DEG C of environment and hot
Sizing, draw ratio is 10.
5) treat through step 4) material of stretch processing pulls out from high temperature service, slowly cools to normal temperature, you can
To the magnetorheological materials with negative poisson's ratio characteristic, its negative poisson's ratio is -8, and magnetic rheology effect is 500%, in 100Hz-
Acoustic absorptivity is 0.93 in 10000Hz frequency bands..
Embodiment 2, be the same as Example 1, unlike,
1) 80 parts of powder polytetrafluoroethylene (PTFE), 10 parts of carbonyl iron dusts and 10 parts of montmorillonites are claimed by weight；
2) by through step 1) dry powder polytetrafluoroethylene (PTFE), carbonyl iron dust and filler mixed, then addition 20 parts
Gasoline, is well mixed, obtains mixture of viscous form；
4) will be through step 3) product of extrusion is introduced into high temperature draw-gear, stretching is carried out in 150 DEG C of environment and hot
Sizing, draw ratio is 20.
5) treat through step 4) material of stretch processing pulls out from high temperature service, slowly cools to normal temperature, you can
To the magnetorheological materials with negative poisson's ratio characteristic, its negative poisson's ratio is -9.08, and magnetic rheology effect is 620%, in 100Hz-
Acoustic absorptivity is 0.94 in 10000Hz frequency bands.
Embodiment 3, be the same as Example 1, unlike,
1) 80 parts of powder polytetrafluoroethylene (PTFE), 10 parts of carbonyl iron dusts and 20 parts of diatomite are claimed by weight；
2) by through step 1) dry powder polytetrafluoroethylene (PTFE), carbonyl iron dust and filler mixed, then addition 20 parts
Gasoline, is well mixed, obtains mixture of viscous form；
4) will be through step 3) product of extrusion is introduced into high temperature draw-gear, stretching is carried out in 150 DEG C of environment and hot
Sizing, draw ratio is 30.
5) treat through step 4) material of stretch processing pulls out from high temperature service, slowly cools to normal temperature, you can
To the magnetorheological materials with negative poisson's ratio characteristic, its negative poisson's ratio is -11.4, and magnetic rheology effect is 790%, in 100Hz-
Acoustic absorptivity is 0.97 in 10000Hz frequency bands.
Embodiment 4, be the same as Example 1, unlike,
1) 80 parts of powder polytetrafluoroethylene (PTFE), 70 parts of carbonyl iron dusts and 5 parts of diatomite are claimed by weight；
2) by through step 1) dry powder polytetrafluoroethylene (PTFE), carbonyl iron dust and filler mixed, then addition 20 parts
Solvent naphtha, is well mixed, obtains mixture of viscous form；
4) will be through step 3) product of extrusion is introduced into high temperature draw-gear, stretching is carried out in 150 DEG C of environment and hot
Sizing, draw ratio is 20.
5) treat through step 4) material of stretch processing pulls out from high temperature service, slowly cools to normal temperature, you can
To the magnetorheological materials of the characteristic with negative poisson's ratio, its negative poisson's ratio is 7.3, and magnetic rheology effect is 1085%, in 100Hz-
Acoustic absorptivity is 0.93 in 10000Hz frequency bands.
Embodiment 5, be the same as Example 1, unlike,
1) 80 parts of powder polytetrafluoroethylene (PTFE), 70 parts of carbonyl iron dusts and 20 parts of montmorillonites are claimed by weight；
2) by through step 1) dry powder polytetrafluoroethylene (PTFE), carbonyl iron dust and filler mixed, then addition 20 parts
Toluene, is well mixed, obtains mixture of viscous form；
4) will be through step 3) product of extrusion is introduced into high temperature draw-gear, stretching is carried out in 150 DEG C of environment and hot
Sizing, draw ratio is 20.
5) treat through step 4) material of stretch processing pulls out from high temperature service, slowly cools to normal temperature, you can
To the magnetorheological materials of the characteristic with negative poisson's ratio, its draw ratio is -20.Its negative poisson's ratio is -7.2, magnetic rheology effect
For 1037%, acoustic absorptivity is 0.92 in 100Hz-10000Hz frequency bands.
Embodiment 6, be the same as Example 1, unlike,
1) 80 parts of powder polytetrafluoroethylene (PTFE), 70 parts of carbonyl iron dusts and 10 parts of montmorillonites and 10 parts of kaolinites are claimed by weight
Soil；
2) by through step 1) dry powder polytetrafluoroethylene (PTFE), carbonyl iron dust and filler mixed, then addition 20 parts
Toluene, is well mixed, obtains mixture of viscous form；
4) will be through step 3) product of extrusion is introduced into high temperature draw-gear, stretching is carried out in 150 DEG C of environment and hot
Sizing, draw ratio is 20.
5) treat through step 4) material of stretch processing pulls out from high temperature service, slowly cools to normal temperature, you can
To the magnetorheological materials of the characteristic with negative poisson's ratio, its negative poisson's ratio is -6.5, and magnetic rheology effect is 917%, in 100Hz-
Acoustic absorptivity is 0.9 in 10000Hz frequency bands.
Embodiment 7, be the same as Example 1, unlike,
1) 90 parts of powder polytetrafluoroethylene (PTFE), 60 parts of carbonyl iron dusts and 10 parts of montmorillonites and 5 parts of kaolin are claimed by weight；
2) by through step 1) dry powder polytetrafluoroethylene (PTFE), carbonyl iron dust and filler mixed, then addition 15 parts
Toluene, is well mixed, obtains mixture of viscous form；
4) will be through step 3) product of extrusion is introduced into high temperature draw-gear, stretching is carried out in 150 DEG C of environment and hot
Sizing, draw ratio is 20.
5) treat through step 4) material of stretch processing pulls out from high temperature service, slowly cools to normal temperature, you can
To the magnetorheological materials with negative poisson's ratio characteristic, its negative poisson's ratio is -7.1, and magnetic rheology effect is 850%, in 100Hz-
Acoustic absorptivity is 0.92 in 10000Hz frequency bands.
Embodiment 8, be the same as Example 1, unlike,
1) 100 parts of powder polytetrafluoroethylene (PTFE), 50 parts of carbonyl iron dusts and 10 parts of montmorillonites and 5 parts of kaolinites are claimed by weight
Soil；
2) by through step 1) dry powder polytetrafluoroethylene (PTFE), carbonyl iron dust and filler mixed, then addition 10 parts
Toluene, is well mixed, obtains mixture of viscous form；
4) will be through step 3) product of extrusion is introduced into high temperature draw-gear, stretching is carried out in 150 DEG C of environment and hot
Sizing, draw ratio is 20.
5) treat through step 4) material of stretch processing pulls out from high temperature service, slowly cools to normal temperature, you can
To the magnetorheological materials with negative poisson's ratio characteristic, its negative poisson's ratio is -7.3, and magnetic rheology effect is 790%, in 100Hz-
Acoustic absorptivity is 0.935 in 10000Hz frequency bands.
Embodiment 9, be the same as Example 1, unlike,
1) 100 parts of powder polytetrafluoroethylene (PTFE), 70 parts of carbonyl iron dusts and 15 parts of kaolin are claimed by weight；
2) by through step 1) dry powder polytetrafluoroethylene (PTFE), carbonyl iron dust and filler mixed, then addition 15 parts
Toluene, is well mixed, obtains mixture of viscous form；
4) will be through step 3) product of extrusion is introduced into high temperature draw-gear, stretching is carried out in 150 DEG C of environment and hot
Sizing, draw ratio is 30.
5) treat through step 4) material of stretch processing pulls out from high temperature service, slowly cools to normal temperature, you can
To the magnetorheological materials with negative poisson's ratio characteristic, its negative poisson's ratio is -12, and magnetic rheology effect is 1090%, in 100Hz-
Acoustic absorptivity is 0.99 in 10000Hz frequency bands.
Claims (1)
1. a kind of preparation method of the magnetorheological materials with negative Poisson characteristics, it is characterised in that：Comprise the following steps that：
1）According to composition weight than claiming 80-100 parts of powder polytetrafluoroethylene (PTFE), 10-70 parts of carbonyl iron dusts and 5-20 parts of fillers；Then
Powder polytetrafluoroethylene (PTFE), carbonyl iron dust and filler are placed into 24 ± 1h in 35 DEG C of environment and dry water removal；
The filler is the one or several kinds in kaolin, diatomite, montmorillonite；
2）Will be through step 1）Dry powder polytetrafluoroethylene (PTFE), carbonyl iron dust and filler is mixed, and is then added 10-20 parts and is added
Work auxiliary agent, is well mixed, obtains mixture of viscous form；
The processing aid is gasoline or toluene；
3）By step 2）Gained mixture of viscous form adds plunger piston extrusion machine, and then extrusion bar is made in two roll calender
The sheet material of 1.50 mm thickness；Dried at 100 DEG C in 12 h, 200 DEG C of environment and dry 12 h；
4）It is introduced into high temperature draw-gear, stretching and thermal finalization is carried out in 150 DEG C of environment, draw ratio is 10-30；
5）Will be through step 4）The material of stretch processing is pulled out from high temperature draw-gear, slowly cools to normal temperature, you can
To the magnetorheological materials of the characteristic with negative poisson's ratio.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0110038A2 (en) * | 1982-09-29 | 1984-06-13 | Vulkor, Incorporated | Polymer interdispersions, related compositions and method of making same |
| CN102175512A (en) * | 2010-12-31 | 2011-09-07 | 清华大学 | Test piece with negative Poisson ratio performance |
| CN103214728A (en) * | 2012-01-19 | 2013-07-24 | 中国科学院化学研究所 | Bionic negative-Poisson's ratio material and preparation method thereof |
| WO2014182910A1 (en) * | 2013-05-08 | 2014-11-13 | Schlumberger Canada Limited | Ultrahigh molecular weight polyethylene reinforced rubber compositions for subterranean applications |
| CN104911804A (en) * | 2015-07-06 | 2015-09-16 | 江南大学 | Negative poisson's ratio two-dimensional warp knitting fabric and weaving method thereof |
| CN105001622A (en) * | 2015-07-29 | 2015-10-28 | 国家纳米科学中心 | Negative-Poisson ratio multifunctional sponge and preparation method thereof |
-
2016
- 2016-03-08 CN CN201610130280.7A patent/CN105754267B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0110038A2 (en) * | 1982-09-29 | 1984-06-13 | Vulkor, Incorporated | Polymer interdispersions, related compositions and method of making same |
| CN102175512A (en) * | 2010-12-31 | 2011-09-07 | 清华大学 | Test piece with negative Poisson ratio performance |
| CN103214728A (en) * | 2012-01-19 | 2013-07-24 | 中国科学院化学研究所 | Bionic negative-Poisson's ratio material and preparation method thereof |
| WO2014182910A1 (en) * | 2013-05-08 | 2014-11-13 | Schlumberger Canada Limited | Ultrahigh molecular weight polyethylene reinforced rubber compositions for subterranean applications |
| CN104911804A (en) * | 2015-07-06 | 2015-09-16 | 江南大学 | Negative poisson's ratio two-dimensional warp knitting fabric and weaving method thereof |
| CN105001622A (en) * | 2015-07-29 | 2015-10-28 | 国家纳米科学中心 | Negative-Poisson ratio multifunctional sponge and preparation method thereof |
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