CN110183706A - A kind of preparation method of environmental protection lightweight bound form damping material - Google Patents
A kind of preparation method of environmental protection lightweight bound form damping material Download PDFInfo
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- C08K7/24—Expanded, porous or hollow particles inorganic
- C08K7/28—Glass
Abstract
A kind of preparation method of environmentally friendly lightweight bound form damping material of the invention belongs to chemical products and coating preparation field.Step includes: production viscoelastic damping slurry, production viscoelastic damping layer, production bond course slurry, production bond course.The present invention makes damping material using ep-type material, reduce peculiar smell and environmental pollution as caused by chemicals volatilization in vehicle, using light-weight inorganic filler, effectively reduce coating quality, reach vehicle lightweight purpose, and damping is good compared with free damping, can effectively improve effect of vibration and noise reduction, is ideal vehicle damping material.
Description
Technical field
The invention belongs to chemical products and coating preparation field, in particular to a kind of to be used for automobile, aircraft, steamer and high speed
The damping material preparation method at train generation vibration and noise position.
Background technique
21 century Nonmetal Materials Used in Automobile development trend is: (1) automotive light weight technology, and reaching energy conservation reduces oil consumption purpose.
(2) without the low VOC emission of hazardous solvent, PVC free and heavy metal, automotive environment friendly materials are made.(3) vehicle ride amenity
Change, high-performance vibration reduction acoustic damping materials development and application makes environment inside car comfortableization.
Automobile is the various high-molecular organic materials of automobile interior exterior, such as automobile component, rubber, coating, plastics, binder
Deng.Since the volatilization of VOC causes the harm to environment and human body, the great attention of various countries automaker is caused at present.
Country has formulated Nonmetal Materials Used in Automobile VOC emission standard.
Vehicle itself lightweight can be effectively reduced vehicle travel process oil consumption, reduce the cost of driving conditions, simultaneously
Reduce environmental pollution caused by vehicle exhaust.As vehicle lightweight, it is desirable that vehicle mitigates weight using material as far as possible, meets
Vehicle lightweight requirements.
Noise and vibration can be generated when running car, influence riding comfort.Measure car comfort an index be
NVH characteristic, i.e. Noise (noise), Vibration (vibration) and Harshness (sound vibration roughness).It is more comfortable to obtain
Environment is taken, control noise and the main method of vibration are that the positions such as the floor in automobile, front wall, boot, ceiling, car door make
With suitable damping material, to realize the effect of vibration and noise reducing.
The vibration of solid mechanical part will cause machine breakdown, and the operation of the vehicles can generate hazardous noise.With existing
For industrial expansion, these harm just increasingly sharpen.Automobile, aircraft, bullet train and the portion that can produce vibration and noise
Part often fails because of vibrating fatigue.
The harm of noise on human is very big, and one side noise will cause environmental pollution and bring injury to human body simultaneously, another
Aspect causes mechanical part to damage and fail.Therefore, the control of noise and vibration is extremely important.
Internal car noise control becomes important one of the research topic of automotive field.Test result shows to produce when automobile traveling
Low frequency internal car noise is mainly propagated by solid route in life, and high frequency internal car noise is then based on air borne.If can subtract
Weak or elimination solid is propagated, then can substantially reduce internal car noise.Vibration damping and noise reducing technology is effective control vibration and noise
Method.It is widely applied on automobile.
Interpenetrating polymer networks (IPN) damping material has high damping value and wide damping function area, is preferably to hinder
Damping material.IPN damping mechanism is high polymer under alternate stress effect, and macromolecular chain segment overcomes molecular friction resistance to generate movement
The regular hour is needed, response lag is this to generate hysteresis loss by friction and then mechanical energy is changed into thermal energy in stress
Ability be known as the damping capacity of material.
Damping material is generally divided into free damping, constraint damping two types.Damping material is fettered generally in damping material
Surface layer is combined along with one layer of rigid damping material, can effectively vibration and noise be absorbed and be converted, damping
It is good compared with free damping, it is ideal damping material.
With the Chinese patent that the immediate prior art of the present invention is application No. is 201611228732.1, patent damping
Layer is combined using phenylpropyl alcohol, pure C and silicon third, and bond course uses epoxy resin and polyester, and wherein bond course filler is by glass
It is formed with inorganic filler, exploitation environment friendly material is Future Development direction.Bound form damping material has wide temperature zone high
Damping characteristics, but with the requirement of the lightweight of vehicle and environmental protection, there are many more need of work is further for bound form damping material
Research.
The research of materials used in auto manufacturing lightweight, vibration and noise reducing and low VOC is that a few years from now on automobile industry is most competitive
Technology and industry development direction.
Summary of the invention
The technical problem to be solved by the present invention is to provide a kind of automobile environmental-protection damp material with compound constraint structure
Preparation method, reach vibration and noise reducing purpose.It is the problem of core wherein: using green material, reduces environmental pollution；It adopts
Meet vehicle lightweight requirements with light material；Material is made of damping layer and bond course, and backsheet is damping layer, and upper layer is
Bond course, damping material overall thickness are 4~6mm, and cured drying prepares the damping fin with constraint structure.For automobile
Car door, floor, boot, the positions such as ceiling reach wide temperature zone high damping feature.
It is to be made of damping layer and two layers of bond course in the present invention, the base-material of damping layer is polyacrylate emulsion, aqueous poly-
Urethane lotion and epoxy resin latex is compound is prepared into IPN material, bond course is epoxy resin and polyurethane mixture, with spraying
Method is coated in viscoelastic layer surface.
Technical scheme is as follows:
A kind of preparation method of environmental protection lightweight bound form damping material, comprising the following steps:
1) make viscoelastic damping slurry: water polyacrylic acid, ring is added in 5:1~4:1 in mass ratio~4 in a stirring kettle
Oxygen resin and polyurethane, which are mixed evenly, is made IPN mixed emulsion, adds antifreezing agent, defoaming agent, dispersing agent, surface-active
Agent and fungicide, stir evenly；Add inorganic filler mica, glass microballoon, diatomite, alumina silicate, light calcium, graphite, rubber
Powder, acicular powder, talcum powder are one or more to stir evenly；It is eventually adding thickener and water and stirs uniform；Then filter is used
Filtering, obtains thick viscoelastic damping slurry；
2) it makes viscoelastic damping layer: making 3 by the viscoelastic damping slurry blade coating of step 1) preparation or with manipulator spraying
The sheet material of~4mm is as viscoelastic damping layer；
3) make bond course slurry: aqueous epoxy resins and polyurethane is added in 3~4:1 in mass ratio in another stirred tank
It is mixed evenly and IPN mixed emulsion is made, antifreezing agent, defoaming agent, dispersing agent, self-control multifunctional assistant and fungicide is added,
It stirs evenly；Inorganic filler mica, light calcium, diatomite, alumina silicate, glass microballoon, graphite are added in above-mentioned stirred tank and are stirred
Uniformly；It is charged with thickener and water again, stirring is uniform, is filtered with filter, obtains thick bond course slurry；
4) bond course is made: in the bond course slurry of the one side spraying 1~2mm step 3) for the viscoelastic damping layer that step 2) obtains
Material is used as bond course, 30 minutes dry at 130 DEG C at drying at room temperature 10 minutes, obtains environmentally friendly lightweight bound form damping material.
In step 1), by mass, mixed by the IPN that water polyacrylic acid, epoxy resin and polyurethane are mixed
Close the 33%~45% of the total viscoelastic damping slurry of the preferred Zhan of lotion.
In step 3), by mass, the IPN mixed emulsion being mixed by aqueous epoxy resins and polyurethane is preferably accounted for
The 45%~50% of total bond course slurry.
The utility model has the advantages that
The present invention makes damping material using ep-type material, reduces the peculiar smell as caused by chemicals volatilization in vehicle
And environmental pollution.Using light-weight inorganic filler, coating quality is effectively reduced, reaches vehicle lightweight purpose.General damping material
Material uses free damping, that is, single material to carry out vibration and noise reducing, and using effect is poor.And fettering damping is in viscoelastic
One layer of constraint material is added on layer, mechanical energy can be changed into thermal energy and directly consumed in system, effectively dropped by constraint damping
The propagation of low vibration or noise, damping is good compared with free damping, improves effect of vibration and noise reduction, is ideal damping material.
Specific embodiment
Embodiment 1
Firstly, preparing viscoelastic damping slurry, in mass ratio, polyacrylate emulsion: polyaminoester emulsion: epoxy emulsion 5:3:
2, the total dosage of three is 40%, light calcium 21%, glass microballoon 5%, mica 10%, rubber powder 5%, diatomite 5.5%, graphite
6.0%, defoaming agent 0.7%, dispersing agent 0.4%, antifreezing agent 0.5%, thickener 0.3%, make by oneself multifunctional assistant 3.5%, kill
Microbial inoculum 0.1%, water 2%.Preparation step is as follows:
A, water polyacrylic acid, epoxy resin and polyurethane mixed emulsion are added in a stirring kettle, stirs evenly, then plus
Enter antifreezing agent, defoaming agent, dispersing agent, self-control multifunctional assistant and fungicide, stirs evenly.
B, inorganic filler mica, light calcium, diatomite, rubber powder, glass microballoon, graphite are added in above-mentioned stirred tank and are stirred
Uniformly.
C, it is charged with thickener and water again, stirring is uniform, is filtered with filter, obtains thick material.
Then, the thick material prepared by above-mentioned C, on the surface of the material with blade coating or with manipulator spraying, as viscoelastic
Layer, coating layer thickness 4mm.
Prepare bond course slurry, in mass ratio, aqueous epoxy resins again: polyurethane=75:25, the total dosage of the two account for
45%, hollow glass micropearl 5%, diatomite 15%, hydrogen calcium 15.3%, acicular powder 5%, mica 5%, defoaming agent 0.7%, dispersion
Agent 0.4%, antifreezing agent 0.8%, thickener 0.3%, surfactant 4.4%, fungicide 0.1%, water 2%, preparation step is such as
Under:
D, aqueous epoxy resins are added in a stirring kettle and polyurethane is mixed evenly and IPN mixed emulsion is made, be added
Antifreezing agent, defoaming agent, dispersing agent, self-control multifunctional assistant and fungicide, stir evenly.
E, inorganic filler mica, light calcium, diatomite, alumina silicate, glass microballoon, graphite are added in above-mentioned stirred tank and are stirred
Uniformly.
F, it is charged with thickener and water again, stirring is uniform, is filtered with filter, obtains thick slurry.
Finally, the one side spraying 2mm thickness in viscoelastic layer damping sheets obtained is used as constraint by slurry prepared by step F
Layer, it is 30 minutes dry at 130 degree at drying at room temperature 10 minutes, obtain the damping fin with bond course.Dry- film density 0.80g/
Cm3 can be used for the positions such as arrangements for automotive doors, boot, floor and ceiling.
Embodiment 2
In mass ratio, polyacrylate emulsion: polyaminoester emulsion: epoxy emulsion=5:4:1, the total dosage of three are 38%, gently
Calcium 20%, mica 12%, alumina silicate 10%, glass microballoon 3%, diatomite 4.0%, graphite 5.0%, rubber powder 2%, defoaming agent
0.4%, dispersing agent 0.5%, antifreezing agent 0.5%, thickener 0.2%, surfactant 4.3%, fungicide 0.1%, water 1%.
A~C prepares viscoelastic damping slurry according to the following steps:
A, water polyacrylic acid is added in a stirring kettle, epoxy resin and polyurethane are mixed evenly that IPN is made is mixed
Lotion is closed, antifreezing agent, defoaming agent, dispersing agent, self-control multifunctional assistant and fungicide is added, stirs evenly.
B, above-mentioned stirring is added in inorganic filler mica, light calcium, diatomite, alumina silicate, glass microballoon, rubber powder, graphite
It is stirred evenly in kettle.
C, it is charged with thickener and water again, stirring is uniform, is filtered with filter, obtains thick material.
Then, viscoelastic damping is made with blade coating or with the mode that manipulator sprays in the thick material prepared by above-mentioned C
Layer, thickness 3mm.
In mass ratio, aqueous emulsion epoxy: polyurethane 80:20, the total dosage of the two account for 50%, hollow glass micropearl 5%, silicon
Diatomaceous earth 10%, light calcium 15%, graphite 5%, mica 5%, defoaming agent 0.7%, dispersing agent 0.4%, antifreezing agent 0.5%, thickener
0.3%, make multifunctional assistant 6.5%, fungicide 0.1%, water 2% by oneself.D~F prepares bond course slurry according to the following steps:
D, aqueous epoxy resins are added in a stirring kettle and polyurethane is mixed evenly and IPN mixed emulsion is made, be added
Antifreezing agent, defoaming agent, dispersing agent, self-control multifunctional assistant and fungicide, stir evenly.
E, inorganic filler mica, light calcium, diatomite, alumina silicate, glass microballoon, graphite are added in above-mentioned stirred tank and are stirred
Uniformly.
F, it is charged with thickener and water again, stirring is uniform, is filtered with filter, obtains thick material.
Finally, prepared viscoelastic layer damping sheets one side spraying 2mm step F preparation slurry as bond course,
It is 30 minutes dry at 130 degree at drying at room temperature 10 minutes, obtain the damping fin with bond course.Dry- film density 0.78g/cm3,
For arrangements for automotive doors, the positions such as boot, floor and ceiling.
Embodiment 3
In mass ratio, polyacrylate emulsion: polyaminoester emulsion: epoxy emulsion=5:2:3, the total dosage of three are 45%, gently
Calcium 25%, mica 10%, alumina silicate 6.5%, diatomite 5%, graphite 5%, dispersing agent 0.5%, antifreezing agent 0.4%, thickener
0.2%, surfactant 0.1%, fungicide 0.03%, water 2%.
A, water polyacrylic acid is added in a stirring kettle, epoxy resin and polyurethane are mixed evenly that IPN is made is mixed
Lotion is closed, antifreezing agent, defoaming agent, dispersing agent, self-control multifunctional assistant and fungicide is added, stirs evenly.
B, inorganic filler mica, light calcium, diatomite, alumina silicate, glass microballoon, graphite are added in above-mentioned stirred tank and are stirred
Uniformly.
C, it is charged with thickener and water again, stirring is uniform, is filtered with filter, obtains thick material.
Thick material prepared by above-mentioned C sprays with blade coating or with manipulator, different shape viscoelastic layer damping fin is made
Material, sheet thickness 4mm.
Fetter layer manufacturing method thereof and raw material proportioning such as embodiment 2, bond course thickness 1mm, dry- film density 0.73g/cm3.
Embodiment 4
In mass ratio, polyacrylate emulsion: polyaminoester emulsion: epoxy emulsion=5:1:4, dosage is after three's mixing
33%, talcum powder 10%, barium sulfate 40%, diatomite 5%, graphite 5%, dispersing agent 0.5%, antifreezing agent 0.4%, thickener
0.2%, make multifunctional assistant 4.6%, fungicide 0.3%, water 1% by oneself.
Layer manufacturing method thereof is damped with embodiment 1, damping layer thickness 4mm.
Bond course production:
A, aqueous emulsion epoxy, polyurethane 80:20 ratio in mass ratio are mixed, the total dosage of the two accounts for 50%, talcum powder
10%, barium sulfate 24.5%, graphite 5%, defoaming agent 0.7%, dispersing agent 0.4%, antifreezing agent 0.5%, thickener 0.3%, from
Multifunctional assistant 6.5% processed, fungicide 0.1%, water 2%.
B, aqueous epoxy resins are added in a stirring kettle and polyurethane is mixed evenly and IPN mixed emulsion is made, be added
Antifreezing agent, defoaming agent, dispersing agent, self-control multifunctional assistant and fungicide, stir evenly.
C, inorganic filler barium sulfate, talcum powder, graphite are added in above-mentioned stirred tank and are stirred evenly.
D, it is charged with thickener and water again, stirring is uniform, is filtered with filter, obtains viscous liquid.
Finally, the viscoelastic damping layer one side spraying 1mm step D preparation thick liquid as bond course,
It is drying at room temperature 10 minutes, 30 minutes dry at 130 degree, obtain the damping fin with bond course, for arrangements for automotive doors, boot,
The positions such as floor and ceiling.Dry- film density 1.12g/cm3.
The damping value of the material of each embodiment of table 1 preparation
| Pilot project | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 |
| 0 DEG C of damping value | 0.141 | 0.101 | 0.120 | 0.131 |
| 20 DEG C of damping value | 0.132 | 0.144 | 0.075 | 0.851 |
| 40 DEG C of damping value | 0.106 | 0.088 | 0.107 | 0.110 |
Damping test is carried out to damping material prepared by above-described embodiment 1~4 under the conditions of 0,20,40 degree respectively, as a result
As shown in Table 1, it can be seen that bound form damping material prepared by the present invention has the characteristics that wide temperature zone high damping.Embodiment 1
~3 dry- film densities are respectively 0.8,0.78 and 0.73, and damping material dry- film density is smaller, are lightweighting materials.Due to comparative example
The inorganic filler bigger using specific gravity of embodiment 4, dry- film density 1.12.Glass or organic solvent are not used in the coating,
Environment and human body will not be polluted and be injured, be environmental protection coating material.
Claims (3)
1. a kind of preparation method of environmental protection lightweight bound form damping material, comprising the following steps:
1) make viscoelastic damping slurry: water polyacrylic acid, asphalt mixtures modified by epoxy resin is added in 5:1~4:1 in mass ratio~4 in a stirring kettle
Rouge and polyurethane, which are mixed evenly, is made IPN mixed emulsion, add antifreezing agent, defoaming agent, dispersing agent, surfactant and
Fungicide stirs evenly；Add inorganic filler mica, glass microballoon, diatomite, alumina silicate, light calcium, graphite, rubber powder, needle
Shape powder, talcum powder are one or more to stir evenly；It is eventually adding thickener and water and stirs uniform；Then it is filtered with filter,
Obtain thick viscoelastic damping slurry；
2) it makes viscoelastic damping layer: spraying 3~4mm of production by the viscoelastic damping slurry blade coating of step 1) preparation or with manipulator
Sheet material as viscoelastic damping layer；
3) make bond course slurry: aqueous epoxy resins and polyurethane mixing are added in 3~4:1 in mass ratio in another stirred tank
It stirs evenly and IPN mixed emulsion is made, antifreezing agent, defoaming agent, dispersing agent, self-control multifunctional assistant and fungicide, stirring is added
Uniformly；Inorganic filler mica, light calcium, diatomite, alumina silicate, glass microballoon, graphite are added in above-mentioned stirred tank and are stirred evenly；
It is charged with thickener and water again, stirring is uniform, is filtered with filter, obtains thick bond course slurry；
4) it makes bond course: making in the bond course slurry of the one side spraying 1~2mm step 3) for the viscoelastic damping layer that step 2) obtains
It is 30 minutes dry at 130 DEG C at drying at room temperature 10 minutes for bond course, obtain environmentally friendly lightweight bound form damping material.
2. a kind of preparation method of environmentally friendly lightweight bound form damping material according to claim 1, which is characterized in that
In step 1), by mass, the IPN mixed emulsion Zhan being mixed by water polyacrylic acid, epoxy resin and polyurethane is total
The 33%~45% of viscoelastic damping slurry.
3. a kind of preparation method of environmentally friendly lightweight bound form damping material according to claim 1 or 2, feature exist
In, in step 3), by mass, the total bond course of IPN mixed emulsion Zhan being mixed by aqueous epoxy resins and polyurethane
The 45%~50% of slurry.
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| CN201910583034.0A CN110183706B (en) | 2019-07-01 | 2019-07-01 | Preparation method of environment-friendly lightweight constrained damping material |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102585636A (en) * | 2012-02-29 | 2012-07-18 | 株洲时代新材料科技股份有限公司 | Environmentally-friendly aqueous damping coating with constrained damping structure and using method of environmentally-friendly aqueous damping coating |
| US20120313307A1 (en) * | 2011-06-13 | 2012-12-13 | Goodrich Corporation | Polymer composites possessing improved vibration damping |
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2019
- 2019-07-01 CN CN201910583034.0A patent/CN110183706B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120313307A1 (en) * | 2011-06-13 | 2012-12-13 | Goodrich Corporation | Polymer composites possessing improved vibration damping |
| CN102585636A (en) * | 2012-02-29 | 2012-07-18 | 株洲时代新材料科技股份有限公司 | Environmentally-friendly aqueous damping coating with constrained damping structure and using method of environmentally-friendly aqueous damping coating |
Non-Patent Citations (1)
| Title |
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| 韩俐伟: ""三元互穿聚合物网络材料阻尼性能研究"", 《化工新型材料》 * |
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