CN109777216A - Spray head, damping-constraining coating structure and preparation method thereof - Google Patents
Spray head, damping-constraining coating structure and preparation method thereof Download PDFInfo
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- CN109777216A CN109777216A CN201811505437.5A CN201811505437A CN109777216A CN 109777216 A CN109777216 A CN 109777216A CN 201811505437 A CN201811505437 A CN 201811505437A CN 109777216 A CN109777216 A CN 109777216A
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Abstract
This disclosure relates to a kind of spray head, damping-constraining coating structure and preparation method thereof, the spray head includes: storage bin (1), the storage bin (1) offers aqueous damping coating entrance (2), prepreg entrance (3) and nozzle (4), it is provided with guide part between the prepreg entrance (3) and the nozzle (4) in the storage bin (1), to be oriented to prepreg into the storage bin (1) and move out along the one side wall of the nozzle (4).The disclosure uses special spray head, can a step be prepared using prepreg as restraint layer, using aqueous damping coating as the damping-constraining coating structure of damping layer, do not influence producing line productive temp, and the dosage of damping material is less, manufacturing cost is low, and the damping capacity of products obtained therefrom gets a promotion.
Description
Technical field
This disclosure relates to a kind of spray head, damping-constraining coating structure and preparation method thereof.
Background technique
Damping material is the material that solid mechanical vibrational energy is changed into thermal energy and is dissipated, and is mainly used for vibration and noise control
System, is widely used in the fields such as automobile, train, steamer, aircraft, engineering machinery and household electrical appliance.
For aqueous damping coating using water as decentralized medium, VOC content is very low, safety and environmental protection, and application range is increasingly extensive.It is existing
Technology generally separately sprays restraint layer on aqueous damping coating surface, generates drawing deformation to avoid damping layer, but be prepared
Constrained damping structure damping capacity it is lower, and need to increase flow chart, extend manufacturing time.
Summary of the invention
One purpose of the disclosure is to provide a kind of spray head for being used to prepare damping-constraining coating structure.
Another object of the present disclosure is to provide a kind of method for preparing damping-constraining coating structure and prepared constraint
Damping coatings structure, cumbersome to solve flow chart in the prior art, manufacturing time is long, the low problem of product damping capacity.
To achieve the goals above, disclosure first aspect: a kind of spray for being used to prepare damping-constraining coating structure is provided
Head characterized by comprising storage bin, the storage bin offer aqueous damping coating entrance, prepreg entrance and nozzle,
It is provided with guide part between the prepreg entrance and the nozzle in the storage bin, to be oriented to prepreg into the storage
Feed bin is simultaneously moved out along the one side wall of the nozzle.
Optionally, the nozzle has the first side wall close to substrate and the second sidewall opposite with the first side wall,
The guide part is arranged between the prepreg entrance and the second sidewall of the nozzle, enters institute to be oriented to the prepreg
It states storage bin and is moved out along the second sidewall of the nozzle.
Optionally, the guide part is directive wheel.
Optionally, the directive wheel includes the first directive wheel and the second directive wheel, and first directive wheel has zigzag
Surface, second directive wheel have smooth surface.
Optionally, disconnecting device is provided at the nozzle.
Disclosure second aspect: a kind of method for preparing damping-constraining coating structure, the damping-constraining coating knot are provided
Structure includes aqueous damping coating layer and the prepreg restraint layer for being covered in the aqueous damping coating layer surface, this method comprises:
Using spray head described in disclosure first aspect, aqueous damping coating is injected into the storing by the aqueous damping coating entrance
Storehouse, and prepreg is sent into the storage bin through the guide part by the prepreg entrance, it is under an increased pressure, described aqueous
Damping paint contacts with the prepreg and the prepreg is driven to be sprayed by the nozzle, obtains damping-constraining coating structure.
Optionally, this method comprises: under an increased pressure, the aqueous damping coating is contacted and driven with the prepreg
The prepreg is sprayed on substrate by the nozzle, obtains the damping-constraining coating structure being overlying on the substrate, and it is described about
Aqueous damping coating layer in beam damping coatings structure is contacted with the substrate.
Optionally, the aqueous damping coating is acrylic resin and/or polyurethane.
Optionally, the prepreg includes continuous fiber and the resin that is immersed on the continuous fiber, the continuous fibre
Dimension is glass fibre, carbon fiber, basalt fibre or natural fiber or two or three of combination in them；The tree
Rouge is epoxy resin, polyurethane resin or vinylite or two or three of combination in them.
Optionally, it is 15~20MPa that the pressurized conditions, which include: pressure,.
Optionally, this method further includes the steps that cutting off the prepreg through the disconnecting device.
The disclosure third aspect: the damping-constraining coating knot that method described in disclosure second aspect is prepared is provided
Structure.
Through the above technical solutions, the disclosure use special spray head, can a step be prepared with prepreg for constraint
Layer, using aqueous damping coating as the damping-constraining coating structure of damping layer, do not influence producing line productive temp, and the use of damping material
Amount is less, and manufacturing cost is low, and the damping capacity of products obtained therefrom gets a promotion.
Other feature and advantage of the disclosure will the following detailed description will be given in the detailed implementation section.
Detailed description of the invention
Attached drawing is and to constitute part of specification for providing further understanding of the disclosure, with following tool
Body embodiment is used to explain the disclosure together, but does not constitute the limitation to the disclosure.In the accompanying drawings:
The structural schematic diagram for the spray head for preparing damping-constraining coating structure that Fig. 1 and Fig. 2 disclosure provides.
Fig. 3 is the structural schematic diagram when damping-constraining coating structure that the disclosure provides is overlying on substrate.
Description of symbols
1 storage bin, 2 aqueous damping coating entrance
3 prepreg entrance, 4 nozzle
5 first directive wheel, 6 second directive wheel
7 disconnecting device, 8 prepreg restraint layer
9 aqueous damping coating layer, 10 substrate
Specific embodiment
It is described in detail below in conjunction with specific embodiment of the attached drawing to the disclosure.It should be understood that this place is retouched
The specific embodiment stated is only used for describing and explaining the disclosure, is not limited to the disclosure.
In the disclosure, in the absence of explanation to the contrary, the noun of locality used such as " upper and lower " typically refers to equipment reality
Upper and lower when border works, " inside and outside " is for the profile of equipment itself.
Disclosure first aspect: providing a kind of spray head for being used to prepare damping-constraining coating structure, with reference to Fig. 1 and Fig. 2, packet
Include: storage bin 1, the storage bin 1 offer aqueous damping coating entrance 2, prepreg entrance 3 and nozzle 4, the storage bin 1
It is provided with guide part between the inherent prepreg entrance 3 and the nozzle 4, enters the storage bin 1 simultaneously to be oriented to prepreg
One side wall along the nozzle 4 moves out.
The spray head of the disclosure has aqueous damping coating entrance and prepreg entrance, and two kinds of synchronous materials inject storage bin,
Be formed as the structure that aqueous damping coating is attached to prepreg surface after the two contact, then sprayed by nozzle, can a step be prepared into
To using prepreg as restraint layer, using aqueous damping coating as the damping-constraining coating structure of damping layer.
According to the disclosure, in order to be conducive to the ejection of material, the aqueous damping coating entrance 2 and spray during the preparation process
Mouth 3 is generally provided with the opposite both ends of the storage bin 1, for example, the aqueous damping coating entrance 2 can be opened with reference to Fig. 1
It is located at the upper end of the storage bin 1, the nozzle 3 can be provided with the lower end of the storage bin 1.The prepreg entrance 3 can
To be provided on the side wall of the storage bin 1, further it is provided on the side wall of the storage bin 1 of the nozzle 4, this
Sample, prepreg are entered storage bin 1 from the prepreg entrance 3 and are moved under the guiding role of guide part to nozzle 4, Jin Eryan
The one side wall of the nozzle 4 moves out.Prepreg is moved out along the one side wall of nozzle 4 to be referred to, when the prepreg enters
It after storage bin 1, is in contact with aqueous damping coating, is attached to prepreg surface to make the two form aqueous damping coating
The structure of (rather than the two mixing), the prepreg along nozzle 4 one side wall it is adherent move out, only side and aqueous damping apply
Material contact, i.e., it is the positional relationships that prepreg, the other side are aqueous damping coating that side is formed in nozzle 4, until with it is aqueous
Damping paint while jetting nozzle 4, obtain the damping-constraining coating product of the structure.
It is aqueous in sprayed damping-constraining coating structure in order to make in a kind of optional embodiment of the disclosure
Damping coating layer is overlying on substrate (i.e. aqueous damping coating layer is contacted with substrate), and the disclosure can be used under inclination conditions
Spray head.At this moment, the nozzle 4 has the first side wall close to substrate and the second sidewall opposite with the first side wall, described
Guide part is arranged between the prepreg entrance 3 and the second sidewall of the nozzle 4, to be oriented to described in the prepreg entrance
Storage bin 1 is simultaneously moved out along the second sidewall of the nozzle 4.In this way, prepreg is along one side wall (i.e. second side far from substrate
Wall) it sprays, so that it is guaranteed that aqueous damping coating contacts substrate first, obtain the damping-constraining coating product of the structure.At this
In disclosed other embodiments, the spray head can also use vertically or horizontally, at this moment, need to only enable spray head or base
Material meets the purpose for making aqueous damping coating contact substrate first in the direction of movement.
According to the disclosure, the guide part can be directive wheel.The directive wheel can be driven by motor, or without outer
Power drive, but occur under the action of the power generated during the preparation process (such as under pressure) driven.
Further, the quantity of the directive wheel can be adjusted according to actual needs.For example, in one kind of the disclosure
In optional embodiment, the directive wheel may include the first directive wheel 5 and the second directive wheel 6, and first directive wheel 5 leans on
The nearly prepreg entrance 3, second directive wheel 6 is close to the second nozzle 4, so that it is guaranteed that prepreg is in two directive wheels
Guiding role under it is mobile to nozzle 4.Further, first directive wheel 5 can have serrated-surface, pre- to increase
Bonding strength between leaching material and aqueous damping coating, optimizes properties of product；Second directive wheel 6 can have smooth table
Face can also further have serrated-surface.In the other embodiments of the disclosure, the quantity of the directive wheel can also be with
It is 3 or more.
According to the disclosure, it is also provided with disconnecting device 7 at the nozzle 3, is used for prepreg after the completion of preparation
Cutting.The disconnecting device 7 can be cutter or any device that can be realized above-mentioned purpose, may be provided at the nozzle 4
One side wall on, be further disposed on the side wall of the nozzle 4 for that side that the prepreg sprays.
Disclosure second aspect: a kind of method for preparing damping-constraining coating structure is provided.The damping-constraining coating knot
Structure includes aqueous damping coating layer 9 and the prepreg restraint layer 8 for being covered in 9 surface of aqueous damping coating layer, with reference to Fig. 3.
This method comprises: using spray head described in disclosure first aspect, by prepreg by the prepreg entrance 3 through the guide part
It is sent into the storage bin 3, and aqueous damping coating is injected into the storage bin 3 by the aqueous damping coating entrance 2, is being pressurizeed
Under the conditions of, the aqueous damping coating contacts with the prepreg and the prepreg is driven to be sprayed by the nozzle 4, obtains about
Beam damping coatings structure.
Using the spray head of disclosure first aspect, prepreg is introduced into the storage bin 1 by the prepreg entrance 3, and
Aqueous damping coating is injected into the storage bin 1 by the aqueous damping coating entrance 2, under an increased pressure, aqueous damping applies
Expect to contact into 4 motion process of nozzle with prepreg, the two moves out simultaneously (and prepreg is along one side wall of nozzle 4), most
It is sprayed eventually by nozzle 4, a step, which is prepared, to be applied using prepreg as restraint layer, by the damping-constraining of damping layer of aqueous damping coating
Layer structure.
Further, in order to enable the aqueous damping coating layer in the damping-constraining coating structure sprayed is overlying on substrate
On, this method comprises: under an increased pressure, the aqueous damping coating contacted with the prepreg and drive the prepreg by
The nozzle 4 is sprayed on substrate, obtains the damping-constraining coating structure being overlying on the substrate, and the damping-constraining coating knot
Aqueous damping coating layer in structure is contacted with the substrate.When being sprayed using the spray head of the disclosure towards substrate, nozzle 4 and base
The distance between material can be 10~20cm.
According to the disclosure, the aqueous damping coating can be the conventional kind of this field, and the disclosure is not special to it
Limitation, for example, the aqueous damping coating can be acrylic resin and/or polyurethane.
According to the disclosure, the prepreg includes continuous fiber and the resin that is immersed on the continuous fiber.The company
Continuous fiber can be glass fibre, carbon fiber, basalt fibre or natural fiber (such as plant fiber and animal origin etc.), or
Two or three of combination of the person in them, the fibers form of the continuous fiber can be one-way tape or woven cloth.The tree
Rouge can be epoxy resin, polyurethane resin or vinylite or two or three of combination in them.The preimpregnation
Material can be commercially available, and can also be prepared using the method for the prior art.
According to the disclosure, the pressurized conditions may include: that pressure is 15~20MPa.
According to the disclosure, at the end of spraying operation, it can stop pressurizeing, while prepreg being cut off, obtain being overlying on substrate
Damping-constraining coating structure, complete the flow chart.Therefore, this method can also include by the prepreg through the cutting
The step of device 7 is cut off.Later, the spray head can be moved to next spraying operation region, open disconnecting device and open again
A beginning new round sprays work.
Disclosed method does not influence producing line productive temp, and the dosage of damping material is less under equal performance requirement,
Manufacturing cost is low.
The disclosure third aspect: the damping-constraining coating knot that method described in disclosure second aspect is prepared is provided
Structure, schematic diagram when being overlying on substrate refer to Fig. 3, and the prepreg restraint layer 8 that prepreg is formed is covered in aqueous damping material
The surface of the aqueous damping coating layer 9 of formation, aqueous damping coating layer 9 are covered in 10 surface of substrate.The damping-constraining of the disclosure
Coating structure has superior damping capacity.
The disclosure is further illustrated by the following examples, but is not used in the limitation disclosure.
Prepreg used in the examples is obtained on the glass fibers by vinylite dipping, vinylite purchase
From Ya Shilan company, company, article number is HETRON 922, and glass fibre is purchased from Taishan glass fiber Ltd, and article number is
T949QZ, aqueous damping coating are purchased from Jiangsu company, alliance, MAT'L mark SX-L02.
In embodiment and comparative example, the damping capacity of aqueous damping coating layer is evaluated according to damping factor, using dynamic
State viscoelastic spectrometer instrument is examined according to " the flexural resonance test method (GB/T16406-1996) of acoustical material damping capacity "
It surveys.
Embodiment
Using spray head as shown in Figs. 1-2, prepreg is introduced into storage bin 1 from prepreg entrance 3, and aqueous damping is applied
Material injects storage bin 1 by aqueous damping coating entrance 2, and under conditions of pressure is 16MPa, aqueous damping coating connects with prepreg
It touches and the prepreg is driven to be sprayed on substrate by nozzle 4,.After the completion of injection, stop pressurization, disconnecting device 7 cuts prepreg
Disconnected, a step is prepared the damping-constraining coating structure being overlying on substrate as shown in Figure 3, aqueous damping coating layer with a thickness of
2.5mm, the thickness 0.5mm of prepreg restraint layer, the damping factor of detection aqueous damping coating layer are 0.43.
Comparative example 1
Using only with the spray head of an entrance, aqueous damping coating is injected in the spray head, in the item that pressure is 16MPa
Under part, sprays to substrate surface, obtain being overlying on the aqueous damping coating layer on substrate, with a thickness of 4mm, detect its damping factor
It is 0.28.
Comparative example 2
Using only with the spray head of an entrance, aqueous damping coating is injected in the spray head, in the item that pressure is 16MPa
Under part, injection to substrate surface obtains being overlying on the aqueous damping coating layer on substrate, then again will preimpregnation with a thickness of 2.5mm
Material is coated with to aqueous damping coating layer surface, and prepreg thickness 0.5mm obtains being overlying on the constrained damping structure on substrate.Detection
The damping factor of aqueous damping coating layer is 0.37.This comparative example uses two step processes, and flow chart is cumbersome, and manufacturing time is long,
And the weaker influence damping of two kinds of material interface properties.
By the comparison of embodiment and comparative example as it can be seen that the damping-constraining coating structure being prepared using disclosed method
Damping capacity get a promotion, and thickness is thinner than only spraying the aqueous damping coating layer that damping paint obtains, and illustrates that material is used
Amount is less.
The preferred embodiment of the disclosure is described in detail in conjunction with attached drawing above, still, the disclosure is not limited to above-mentioned reality
The detail in mode is applied, in the range of the technology design of the disclosure, a variety of letters can be carried out to the technical solution of the disclosure
Monotropic type, these simple variants belong to the protection scope of the disclosure.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case where shield, can be combined in any appropriate way, in order to avoid unnecessary repetition, the disclosure to it is various can
No further explanation will be given for the combination of energy.
In addition, any combination can also be carried out between a variety of different embodiments of the disclosure, as long as it is without prejudice to originally
Disclosed thought equally should be considered as disclosure disclosure of that.
Claims (10)
1. a kind of spray head for being used to prepare damping-constraining coating structure characterized by comprising storage bin (1), the storage bin
(1) aqueous damping coating entrance (2), prepreg entrance (3) and nozzle (4) are offered, the storage bin (1) is interior in the preimpregnation
It is provided with guide part between material entrance (3) and the nozzle (4), to be oriented to prepreg into the storage bin (1) and along described
The one side wall of nozzle (4) moves out.
2. spray head according to claim 1, wherein the nozzle (4) have close to substrate the first side wall and with it is described
The opposite second sidewall of the first side wall, the second side of the guide part setting in the prepreg entrance (3) and the nozzle (4)
Between wall, to be oriented to the prepreg into the storage bin (1) and be moved out along the second sidewall of the nozzle (4).
3. spray head according to claim 1 or 2, wherein the guide part is directive wheel.
4. spray head according to claim 4, wherein the directive wheel includes the first directive wheel (5) and the second directive wheel
(6), first directive wheel (5) has serrated-surface, and second directive wheel (6) has smooth surface.
5. spray head according to claim 1 or 2, wherein be provided with disconnecting device (7) at the nozzle (3).
6. a kind of method for preparing damping-constraining coating structure, the damping-constraining coating structure include aqueous damping coating layer and
It is covered in the prepreg restraint layer of the aqueous damping coating layer surface, which is characterized in that this method comprises: using claim
Prepreg is sent into the storing through the guide part by the prepreg entrance (3) by spray head described in any one of 1~5
Storehouse (1), and aqueous damping coating is injected into the storage bin (1) by the aqueous damping coating entrance (2), in pressurized conditions
Under, the aqueous damping coating contacts with the prepreg and the prepreg is driven to be sprayed by the nozzle (4), is constrained
Damping coatings structure.
7. according to the method described in claim 6, wherein, this method comprises: under an increased pressure, the aqueous damping coating with
The prepreg contacts and the prepreg is driven to be sprayed on substrate by the nozzle (4), obtains the pact being overlying on the substrate
Beam damping coatings structure, and the aqueous damping coating layer in the damping-constraining coating structure is contacted with the substrate.
8. according to the method described in claim 6, wherein, the aqueous damping coating is acrylic resin and/or polyurethane；
The prepreg includes continuous fiber and the resin that is immersed on the continuous fiber, and the continuous fiber is glass fibers
Dimension, carbon fiber, basalt fibre or natural fiber or two or three of combination in them；The resin is asphalt mixtures modified by epoxy resin
Rouge, polyurethane resin or vinylite or two or three of combination in them；
The pressurized conditions include: that pressure is 15~20MPa.
9. according to the method described in claim 6, wherein, this method further includes by the prepreg through the disconnecting device (7)
The step of cutting.
10. the damping-constraining coating structure that method described in any one of claim 6~9 is prepared.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811505437.5A CN109777216B (en) | 2018-12-10 | 2018-12-10 | Spray head, constrained damping coating structure and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811505437.5A CN109777216B (en) | 2018-12-10 | 2018-12-10 | Spray head, constrained damping coating structure and preparation method thereof |
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| CN109777216A true CN109777216A (en) | 2019-05-21 |
| CN109777216B CN109777216B (en) | 2021-05-04 |
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Cited By (1)
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| CN110330844A (en) * | 2019-06-25 | 2019-10-15 | 北京汽车集团有限公司 | Multilayer damping-constraining coating structure and its preparation method and application and Automobile Plate and vehicle |
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| Publication number | Publication date |
|---|---|
| CN109777216B (en) | 2021-05-04 |
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