CN107574579A - A kind of preparation method of ageing-resistant acoustical cotton - Google Patents
A kind of preparation method of ageing-resistant acoustical cotton Download PDFInfo
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- CN107574579A CN107574579A CN201710975271.2A CN201710975271A CN107574579A CN 107574579 A CN107574579 A CN 107574579A CN 201710975271 A CN201710975271 A CN 201710975271A CN 107574579 A CN107574579 A CN 107574579A
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Abstract
The invention discloses a kind of preparation method of ageing-resistant acoustical cotton, wherein, it is raw materials used including lauryl sodium sulfate, carragheen, sepiolite powder, polypropylene, styrene, butyl methacrylate, triethanolamine borate, pentaerythrite, amido silicon oil, azodiisobutyronitrile, dibutyl sebacate, antioxidant MB.We invents obtained ageing-resistant acoustical cotton can be ageing-resistant and with the characteristics of acoustically effective and mechanical property are good, durability is high.
Description
Technical field
The invention belongs to ageing-resistant acoustical cotton preparing technical field, and in particular to a kind of preparation side of ageing-resistant acoustical cotton
Method.
Background technology
Due to rapid development of economy, the value volume and range of product of noise source is more and more, and noise pollution has permeated people's work
Make, the every field of life, noise, which turns into, to be influenceed people's lives most serious, one of widest pollution be present.As environmental protection is anticipated
The continuous enhancing known, problem of noise pollution are increasingly valued by people.To seek solution, ensure people's life
It is living, learning activities to be normally carried out, it is necessary to continually develop the new material that control noise hazard.
Acoustical cotton belongs to sound-absorbing porous material, when sound passes through duct, multiple reflections in the material, sound energy attenuation and reach
To the function of sound absorption.Conventional acoustical cotton has glass fibre acoustical cotton and polyester fiber acoustical cotton, the environmental protection of glass fibre acoustical cotton
Property is poor, and raw material is contained hazardous substance, and itch is easily caused when touching the skin of people, and is not easy to construct.Polyester fiber sound-absorbing
Cotton is harmless, but poor mechanical property, easily deformable, processing difficulties, and durability is not high and not ageing-resistant.
The content of the invention
The purpose of this part is to summarize some aspects of embodiments of the invention and briefly introduce some preferably to implement
Example.It may do a little simplified or be omitted to avoid making our department in this part and the description of the present application summary and denomination of invention
Point, the purpose of specification digest and denomination of invention obscure, and this simplification or omit and cannot be used for limiting the scope of the present invention.
In view of the technological gap of the preparation method of above-mentioned and/or existing ageing-resistant acoustical cotton, it is proposed that the present invention.
It is therefore an object of the present invention to solves deficiency of the prior art, there is provided a kind of preparation side of ageing-resistant acoustical cotton
Method.
In order to solve the above technical problems, the invention provides following technical scheme：A kind of preparation side of ageing-resistant acoustical cotton
Method, including, in terms of mass parts, raw material includes, lauryl sodium sulfate 0.5-1, carragheen 0.5-1, sepiolite powder 10-15, gathers
Propylene 110-120, styrene 5-7, butyl methacrylate 4-6, triethanolamine borate 5-6, pentaerythrite 2-4, amino silicone
Oily 1-2, azodiisobutyronitrile 0.05-0.1, dibutyl sebacate 1-2；By lauryl sodium sulfate be configured to the aqueous solution and with card
Draw glue to add in reactor jointly to react, then add sepiolite powder, ultrasonic disperse, temperature is adjusted, in logical nitrogen protective condition
Lower addition styrene, butyl methacrylate and azodiisobutyronitrile stirring, cooled and filtered, washing, drying, then add ammonia
Base silicone oil is well mixed, and modified powder is obtained after air-flow crushing；
By modified powder and polypropylene, triethanolamine borate, pentaerythrite, dibutyl sebacate, antioxidant MB at a high speed
It is well mixed, then extruded by extruder in 190~220 DEG C of melting mixings, carry out spinning through melt spinning, obtain compound fibre
Dimension；The composite fibre is subjected to shredding, combing, stacks networking, it is then hot-forming, produced after surface treatment ageing-resistant
Acoustical cotton.
As a kind of preferred scheme of the preparation method of ageing-resistant acoustical cotton of the present invention, wherein：：The common addition
Reacted in reactor, it is the stirring reaction 0.5-1h under 85-90 DEG C, 1000-1200rpm.
As a kind of preferred scheme of the preparation method of ageing-resistant acoustical cotton of the present invention, wherein：The adjustment temperature,
It is that temperature is adjusted into 65-70 DEG C.
As a kind of preferred scheme of the preparation method of ageing-resistant acoustical cotton of the present invention, wherein：It is described by dodecane
Base sodium sulphate is configured to the aqueous solution, and it is the aqueous solution that lauryl sodium sulfate is configured to 0.5-1%.
As a kind of preferred scheme of the preparation method of ageing-resistant acoustical cotton of the present invention, wherein：It is described in logical nitrogen
Styrene, butyl methacrylate and azodiisobutyronitrile stirring are added under protective condition, it is under logical nitrogen protective condition
Add styrene, butyl methacrylate and azodiisobutyronitrile stirring 2-3h.
As a kind of preferred scheme of the preparation method of ageing-resistant acoustical cotton of the present invention, wherein：The ultrasonic disperse,
Wherein, supersonic frequency 30-40kHz.
As a kind of preferred scheme of the preparation method of ageing-resistant acoustical cotton of the present invention, wherein：The ultrasonic disperse,
Wherein, the ultrasonic disperse time is 5-10min.
Beneficial effect possessed by the present invention：
We invents the spy that obtained ageing-resistant acoustical cotton not only has acoustically effective and mechanical property is good, durability is high
Point, harmful substance that can be in ageing-resistant and absorption air effectively purify air, protect health, comprehensive value is high, practicality
By force.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, required use in being described below to embodiment
Accompanying drawing be briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for this
For the those of ordinary skill of field, without having to pay creative labor, it can also be obtained according to these accompanying drawings other
Accompanying drawing.Wherein：
Fig. 1 is the structure function figure being related in embodiment 1-3；
Fig. 2 is the overall structure front schematic view being related in embodiment 1-3；
Fig. 3 is the drive component structural representation being related in embodiment 1-3；
Fig. 4 is the feed system structural representation being related in embodiment 1-3；
Fig. 5 is the compression moulding system structure diagram being related in embodiment 1-3；
Fig. 6 is the compression moulding internal system structural representation being related in embodiment 2-3；
Fig. 7 is the temperature-controlling component structural representation being related in embodiment 2-3；
Fig. 8 is the air quantity controller structural representation being related in embodiment 3；
Fig. 9 is the resilience component structure diagram being related in embodiment 3；
Figure 10 is the temperature-controlling component overall structure diagram being related in embodiment 3；
Figure 11 is the support frame overall structure diagram being related in embodiment 3；
Figure 12 is the second base overall structure diagram being related in embodiment 3；
Figure 13 is the chuck structure schematic diagram being related in embodiment 3；
Figure 14 is the limit assembly structural representation being related in embodiment 3；
Figure 15 is the second base structural representation being related in embodiment 3；
Figure 16 is the knob part structural representation being related in embodiment 3；
Figure 17 is the chuck and limit assembly connection diagram being related in embodiment 3.
Embodiment
In order to facilitate the understanding of the purposes, features and advantages of the present invention, with reference to specific embodiment pair
The embodiment of the present invention is described in detail.
Many details are elaborated in the following description to facilitate a thorough understanding of the present invention, still the present invention can be with
It is different from other manner described here using other to implement, those skilled in the art can be without prejudice to intension of the present invention
In the case of do similar popularization, therefore the present invention is not limited by following public specific embodiment.
Secondly, " one embodiment " or " embodiment " referred to herein refers to may be included at least one realization side of the present invention
Special characteristic, structure or characteristic in formula." in one embodiment " that different places occur in this manual not refers both to
Same embodiment, nor the single or selective embodiment mutually exclusive with other embodiment.
Embodiment 1
In terms of mass parts, raw material is lauryl sodium sulfate 0.5, carragheen 1, sepiolite powder 10, polypropylene 110, benzene second
Alkene 6, butyl methacrylate 5, triethanolamine borate 5, pentaerythrite 3, amido silicon oil 2, azodiisobutyronitrile 0.05, the last of the ten Heavenly stems two
Dibutyl phthalate 1, antioxidant MB 2；
By lauryl sodium sulfate be configured to 0.5% the aqueous solution and add jointly with carragheen reactor 85 DEG C,
Stirring reaction 1h under 1100rpm, sepiolite powder is then added in 35kHz ultrasonic disperse 10min, temperature is adjusted to 70 DEG C, logical
Under nitrogen protective condition add styrene, butyl methacrylate and azodiisobutyronitrile stirring 2h, cooled and filtered, washing,
Dry, then add amido silicon oil and be well mixed, modified powder is obtained after air-flow crushing；
By modified powder and polypropylene, triethanolamine borate, pentaerythrite, dibutyl sebacate, antioxidant MB at a high speed
It is well mixed, extruder is put into, as shown in figure 1, enabling to material along charging by the booster action of charging drive component 202
Bucket 201 hurtles down, into machine barrel 501.Meanwhile the motor 101 in drive component 100 passes through reduction box 102 and shaft coupling
The gearing of device 103, the screw rod 502 in machine barrel 501 is driven to be rotated.Into machine barrel 501 material screw rod 502 rotation
Turn to be extruded under impetus.
It is related to extruder in the present embodiment, its agent structure mainly includes five component units, respectively drive system
100th, feed system 200, control system 300, support system 400 and compression moulding system 500.
As shown in Figure 2-5, drive system 100 includes motor 101, reduction box 102 and shaft coupling 103, and three is successively
It is attached, forms transmission mechanism.Feed system 200 includes feed hopper 201 and charging drive component 202.Control system 300 is wrapped
Include the first control panel 301 and the second control panel 302, the major control drive system 100 of the first control panel 301 and charging
System 200, the major control compression moulding system 500 of the second control panel 302.Support system 400 includes first base 401, the second bottom
Seat 402 and support frame 403.Compression moulding system 500 includes machine barrel 501, screw rod 502, temperature-controlling component 503, air outlet 504, shaping mould
Tool 505, discharging opening 506, screw rod 502 are arranged at the inner chamber of machine barrel 501, and temperature-controlling component 503 and air outlet 504 are arranged at machine barrel
501 both sides, mould 505 and discharging opening 506 are arranged at the end of machine barrel 501.
Further, in drive system 100, the output par, c of motor 101 is connected with reduction box 102, slows down
Case 102 is connected with shaft coupling 103.The effect of drive system 100 is that required moment of torsion and rotating speed are provided to screw rod 502 so that
Screw rod 502 works in certain range of speeds internal rotation, by manufacturing condition requirement, ensures screw rod 502 in certain torque
Smoothly rotated under effect, complete raw material plasticizing and be pushed out the transportation work of machine barrel.Wherein, reduction box 102 in prime mover and
Plaing a part of to match rotating speed between working machine or executing agency and transmit torque, reduction box 102 is a kind of relatively accurate machinery,
Purpose using it is to reduce rotating speed, increases torque.In the present embodiment, reduction box 102 effectively increases the moment of torsion of rotation, subtracts
The loss of energy is lacked.And shaft coupling 103 is allowed to altogether for two axles (driving shaft and driven shaft) coupled in different institutions
It is same to rotate to transmit the machine components of moment of torsion.When using the extruder, the screw rod 502 of the compression moulding system 500 passes through
Shaft coupling 103 and reduction box 102 are engaged with motor 101, motor 101 drive reduction box 102 and shaft coupling 103 with
And screw rod 502 is moved, the driving mechanism of total is realized.
In feed system 200, including feed hopper 201 and charging drive component 202, feed hopper 201 is with feeding driving group
Part 202 connects, and feed hopper 201 is located at the surface of machine barrel 501 in compression moulding system 500, and communicates therewith.Feed drive component
202 points are two parts, respectively outside motor, and the agitator in feed hopper 201, when deployed, into feed hopper 201
Fed intake, while motor driven mixer is stirred, and is driven the material in feed hopper 201 quickly to fall into machine barrel 501, is carried
Back is handled raw material, effectively raises operating efficiency.
Control system 300 has two control panels, respectively the first control panel 301 and the second control panel 302.Squeeze
The screw speed that goes out during the control system in machine equipment is mainly used to realize extruder production work, each position heating-up temperature
The control of the technological parameters such as melt pressure is expected with plasticizing.The control system of extruder is controlled using instrument more at present.In this implementation
In example, the major control drive system 100 of the first control panel 301 and feed system 200, the second control panel 302 are mainly controlled
Compression moulding system 500 processed.Specifically, the rotating speed of the major control motor 101 of the first control panel 301, and charging driving group
The rotating speed of motor in part 202, it can so control the mixing speed of agitator in the rotating speed and feed hopper 201 of screw rod 502.The
One control panel 301 is arranged at the outer side edges of first base 401.It is each in the major control compression moulding system 500 of second control panel 302
Temperature, environment temperature and the charge temperature at position etc., so as to control technological temperature of the raw material in extrusion plasticizing stable one
In fixed scope, with the quality of production.Wherein, temperature-controlling component 503 is also controlled by it.Second control panel 302 is arranged at the second bottom
The outer side edges of seat 402.
Support system 400 has three supporters, respectively first base 401, second base 402 and support frame 403.Tool
Body, wherein first base 401 is used to support drive system 100, and its top is provided with motor 101, reduction box 102 and connection
Axle device 103.Second base 402 is used to support support frame 403 and compression moulding system 500, and second base 402 is provided with support above
Frame 403, the lower end of support frame 403 are connected with the upper surface of second base 402, and the machine barrel 501 of compression moulding system 500 is together with screw rod
502 are arranged at the upper surface of support frame 403.Whole support system 400 serves fixed cell part, sets the work of control system
With.
Main part in compression moulding system 500 as whole extruder device, its major function are that raw material is passed through from here
Extruding, heating, be plastifying fusion state by Solid State Transformation, then flow distribution plate (being also porous plate) equivalent from the front end of machine barrel 501, etc.
Pressure ground is uniformly extruded, into moulded products mould.Its primary structure includes machine barrel 501, screw rod 502, temperature-controlling component 503, air-out
A series of components such as mouth 504, mould 505, discharging opening 506.Screw rod 502 is arranged at the inner chamber of machine barrel 501, and through the beginning
Eventually.The upper end of machine barrel 501 is connected with feed hopper 201, and interconnects.Material is put into from feed hopper 201, and enters machine barrel
After 501, material is extruded, is transferred to end by the screw rod 502 rotated in machine barrel 501.Temperature-controlling component 503 is arranged at machine barrel 501
Outer side edges, for the environment temperature for being passed through the air-flow of certain temperature to control inside machine barrel 501, ensure that penetralia was being extruded
Environment temperature is at utmost reduced in journey to the respectively influence of processing warm area temperature in Screw Extrusion.Air outlet 504 relative to
Temperature-controlling component 503 is arranged at the opposite side of machine barrel 501, and the air-flow of machine barrel 501 is passed through for discharging.Mould 505 and go out
Material mouth 506 is arranged at the outer end of compression moulding system 500, and wherein mould 505 is used to be that material is moulding.Discharging opening 506 is set
On the downside of the outer end of mould 505, for exporting molding materials.
In whole production process, screw rod 502 and machine barrel 501 are responsible for the task of plasticizing and the pressurization of material.Screw rod 502
It is that the critical component of extruder, extrusion yield, melt temperature, melt uniformity and the power consumption of extruder etc. depends primarily on
The structure of screw rod 502.The diameter D of screw rod 502 is the basic parameter of screw rod 502, and the specification of extruder often carrys out table with the diameter of screw rod 502
Show.The draw ratio L/D of screw rod 502 is the important parameter of screw rod 502.Draw ratio is big, and plasticizing is uniform, at present the length of general screw 502
Footpath ratio mostly 25 or so.
The specific operation principle of the present embodiment is：Whole extruder device is arranged on support system 400, control system
300 two control panels control mechanical movement and the temperature levels of extruder respectively.When material is entered by feed hopper 201
After machine barrel 501, rotation is synchronized by the screw rod 502 that drive system 100 is connected, promotes material to occur in machine barrel 501
Mobile, material, which is under pressure in suitable environment temperature and obtains heat, occurs metamorphosis, finally by mould 505
After shaping, by the discharger of discharging opening 506.
In addition to other complementary effects further, in this course,.After material knocks down hopper 201, driving
In the presence of component 202, material can be accelerated and rapidly enter machine barrel 501.Motor 101, reduction box in drive system 100
102 and shaft coupling 103 form transmission and rotation be delivered to screw rod 502.Temperature-controlling component 503 is maintained in machine barrel 501, outside screw rod
Regional temperature is stable (to have two regions, one is that machine barrel 501 is interior, the perimeter outside screw rod in machine barrel 501；One is spiral shell
Where bar, the interior zone of each workspace is included；Interior zone has separation layer with perimeter), temperature-controlling component 503 maintains
The temperature stabilization of perimeter, and non-proxy heater heats to each workspace in interior zone, high degree reduces
Due to the unstable influence to caused by the temperature of internal each workspace of extruder environment temperature.
Need to ensure that the temperature of each workspace of the penetralia of machine barrel 501 and environment temperature are in during production and processing
Suitable scope.And the control of temperature range is mainly implemented by the second control panel 302 to adjust.Pass through the second control panel
302 can adjust each area's temperature of the penetralia of machine barrel 501, be set to 190-200 DEG C of the firstth area, the second 200-205 DEG C of area, and
Three 205-210 DEG C of areas, 210-220 DEG C of head.Second control panel 302 can also adjust the environment temperature of machine barrel 501.Wherein, machine
The regulation of environment temperature is mainly realized by temperature-controlling component 503 in cylinder 501.
Spinning is carried out through melt spinning after extrusion, obtains composite fibre；
Composite fibre is subjected to shredding, combing, stacks networking, it is then hot-forming, produced after surface treatment resistance to old
Change acoustical cotton.
Sound absorption qualities test GBJ 88-1985 are carried out to acoustical cotton《Standing-wave-tube method acoustic absorptivity and specific acoustic impedance measuring gage
Model》Measure.The acoustic absorptivity average value of frequency range is rounded as the excellent of evaluation its sound absorption qualities.
Acoustical cotton acoustic absorptivity made from final measure is 0.632.
Resistance to ag(e)ing tests measurement result, ageing resistance (150h)：It is flawless, indeformable.
Embodiment 2
In terms of mass parts, raw material is lauryl sodium sulfate 1, carragheen 1, sepiolite powder 15, polypropylene 120, styrene
7, butyl methacrylate 5, triethanolamine borate 6, pentaerythrite 3, amido silicon oil 2, azodiisobutyronitrile 0.1, decanedioic acid
Dibutyl ester 2, antioxidant MB 2；
By lauryl sodium sulfate be configured to 1% the aqueous solution and add jointly with carragheen reactor 90 DEG C,
Stirring reaction 1h under 1100rpm, it is 70 DEG C then to add sepiolite powder in 35kHz ultrasonic disperse 10min, adjustment temperature, is being led to
Under nitrogen protective condition add styrene, butyl methacrylate and azodiisobutyronitrile stirring 3h, cooled and filtered, washing,
Dry, then add amido silicon oil and be well mixed, modified powder is obtained after air-flow crushing；
By modified powder and polypropylene, triethanolamine borate, pentaerythrite, dibutyl sebacate, antioxidant MB at a high speed
It is well mixed, extruder is put into, as shown in figure 1,190-200 DEG C of the firstth area is set to, and the second 200-205 DEG C of area, the 3rd
205-210 DEG C of area, 210-220 DEG C of head.Second control panel 302 can also adjust the environment temperature of machine barrel 501.Wherein, machine barrel
The regulation of environment temperature is mainly realized by temperature-controlling component 503 in 501.
The present embodiment is different from embodiment 1, according to the change procedure of the three kinds of physical states of material in an extruder
And the job requirement to 502 each position of screw rod, screw rod 502 can be divided into feeding section, also known as solid conveying section；Melt zone,
Also known as compression section；Homogenizing zone, also known as metering section.Here it is the common screw 502 generally described in us, also known as three-stage screw
502.Solve the problems, such as needed for the present embodiment be：Extruder in process of manufacture, feeding section, melt zone and homogenizing zone this
Trizonal working condition.
In the production application field of extruder, common extrusion theory is built upon conveying, compresses and measures these three bases
On the basis of this function.Thus in general, screw rod 502 includes feeding section, melt zone and homogenizes section.It is defeated that feeding section plays solid
Effect is sent, material is in the solid-state not plastified in feeding section, and the particle of compacting, and rubbed production are gradually become by loose particle
Heat amount；Material melts are played in compression section, and material is gradually changed in compression section from solid-state to viscous state, stirring in this section
Mix, shear, rubbing action it is all more complicated；The main function for homogenizing section is that the fused materials for sending compression section increase pressure,
It is further homogenous plasticized, and make its level pressure, quantitatively from head extrusion.
Specifically, in screw rod 502, feeding section (transportation section) be presented entering material since material molten condition it
Between one section, be made up of charging zone, solid conveying zone and transition stagnant regions.It is solid-state that material, which is in this section, to feeding section
End, material is heated to soften.Feeding section screw channel waits deeply to be equidistant, and deep.The effect of feeding section be make material it is heated, by
Press and move forward, i.e., the feedstock transportation from hopper into machine barrel to fluxing zone.So feeding section is also known as feeding section or feed section.
After material enters screw rod 502 by hopper, in the case where the screw rod 502 of rotation acts on, pass through machine tube inner wall and screw rod 502
The rubbing action on surface is fed forward and is compacted, and material is fed forward in feeding section in solid-state.Under normal circumstances, feeding
The end of section, due to the effect of machine barrel external heat and frictional heat, the material being in contact with machine tube inner wall has reached or approached glutinous
Fluidised form simultaneously starts to melt, and a transition region occurs, i.e. stagnant regions.Strictly speaking, so-called stagnant regions refer to from solid conveying zone
Terminate this area city initially occurred to molten bath.
Melt zone (compression section) refers to one section of the middle part of screw rod 502, also known as fluxing zone.This section is molten to since material
Material melts completely.Compression section screw channel for it is equidistant do not wait it is deep and from deep to shallow.The effect of compression section is to mould material melts
Change, be compacted and move forward, while also play the role of exhaust.
Material enters melt zone by feeding section, continues to be fed forward with material, due to the gradual change of the screw channel of screw rod 502
Shallow, and the inhibition of screen pack, flow distribution plate and head, material is gradually under pressure effect, and is further consolidated.With
This simultaneously, material by the external heat from machine barrel and screw rod 502 and machine barrel strong agitation, mix and the effect such as shearing,
Material is constantly heated up, and the inventory that fused mass doses is on the increase and do not melted is constantly reduced, whole to melt zone end, material
Or the overwhelming majority melts and is changed into viscous state.
Homogenizing zone (metering section) is the final stage of screw rod 502, is called metering section or extruding zone.Its effect is to make melt
Further plasticizing is uniform, stream constant temperature, quantitative, level pressure is uniformly extruded by flow channel, and this section of screw channel equidistantly waits deeply, and compared with
It is shallow.
Heating system 507 and cooling system 508 are additionally provided with the outside of machine barrel 501.It is primarily referred to as to compression moulding system
The heating and cooling of the parts such as machine barrel 501, screw rod 502 in 500.The purpose of heating and cooling to these positions, be in order to
Technological temperature of the raw material in extrusion plasticizing is controlled to ensure the plasticizing quality of raw material in certain scope, make material product
The progress of production energy normal table, obtains qualified product.
Specifically, as shown in fig. 6, also have heater 507a, heat-insulation layer 507b and safety anti-in the outside of machine barrel 501
The structure sheafs such as shield 507c.Further, screw rod 502 is arranged at the inside of machine barrel 501.The outside of the inside of machine barrel 501 is provided with
Three heater 507a correspond respectively to feeding section, melt zone in screw rod 502 and homogenize three sectional areas of section (certainly in reality
During use, 3 heaters 507 can be not limited to according to the actual requirements, can be fitted according to the hop count of multi-section type screw 502
When adjustment quantity).Each heater 507a is ring-type, and outer around machine barrel 501 makes a circle, and be brought into close contact.Heater
507a is mainly made up of temperature controller and heating collar, the screw rod 502 of machine barrel 501 and inside can be heated, each section
Different temperature ranges can be adjusted.Heater 507a outside parcel one layer of heat preservation layer 507b, can efficiently reduce heat
Loss, save production cost.And heat-insulation layer 507b outside also covers one layer of safty shield 507c, have to total
Outer protection acts on.
Meanwhile correspond to the regional location of feeding section in the structure sheaf where safty shield 507c and heat-insulation layer 507b
It can leave blank and cooling system 508 is set, its effect is that the part of machine barrel 501 at feed hopper 201 is cooled down, and prevents raw material mistake
It is early to melt, there is " bridge formation " phenomenon, block feed hopper 201.Cooling system 508 is a cooling jacket being enclosed on machine barrel 501,
With water inlet 508a and delivery port 508b.The boring of cooling system 508, water can be housed and can be circulated.When cold water is from entering
Mouth of a river 508a is flowed into, and full of the inner space of cooling system 508, then after delivery port 508b outflows, can be absorbed and be taken away machine barrel
Heat in 501.In this way, the circulating water flow of cooling system 508 is continuous successively, and it is sustainable to be cooled for the region, prevent original
Expect premature melting.Preferably, the cooling system 508 in the present embodiment can also use structure as shown in Figure 9, cooling system
508 are also distributed in the structure sheaf where heat-insulation layer 507b, and overall structure is spiral circulation passage, and the section of passage is
The certain rectangle of size (actual size can carry out rationally changing according to objective demand).Passage has water inlet 508a and delivery port
508b, it is respectively positioned on the underface of compression moulding system 500.
Spinning is carried out through melt spinning after extrusion, obtains composite fibre；
Composite fibre is subjected to shredding, combing, stacks networking, it is then hot-forming, produced after surface treatment resistance to old
Change acoustical cotton.
Sound absorption qualities test GBJ 88-1985 are carried out to acoustical cotton《Standing-wave-tube method acoustic absorptivity and specific acoustic impedance measuring gage
Model》Measure.The acoustic absorptivity average value of frequency range is rounded as the excellent of evaluation its sound absorption qualities.
Acoustical cotton acoustic absorptivity made from final measure is 0.639.
Resistance to ag(e)ing tests measurement result, ageing resistance (150h)：It is flawless, indeformable.
Embodiment 3
In terms of mass parts, raw material is lauryl sodium sulfate 1, carragheen 1, sepiolite powder 10, polypropylene 115, styrene
5, butyl methacrylate 5, triethanolamine borate 5, pentaerythrite 3, amido silicon oil 1, azodiisobutyronitrile 0.1, decanedioic acid
Dibutyl ester 1, antioxidant MB 3,
By lauryl sodium sulfate be configured to 1% the aqueous solution and add jointly with carragheen reactor 85 DEG C,
Stirring reaction 1h under 1000rpm, sepiolite powder is then added in 40kHz ultrasonic disperse 8min, adjustment temperature is 65 DEG C, in logical nitrogen
Styrene, butyl methacrylate and azodiisobutyronitrile stirring 2h are added under the conditions of gas shielded, cooled and filtered, washing, is done
It is dry, then add amido silicon oil and be well mixed, modified powder is obtained after air-flow crushing；
By modified powder and polypropylene, triethanolamine borate, pentaerythrite, dibutyl sebacate, antioxidant MB at a high speed
It is well mixed, extruder is put into,
It is related to extruder in the present embodiment, its agent structure mainly includes five component units, respectively drive system
100th, feed system 200, control system 300, support system 400 and compression moulding system 500.
As shown in Figure 2-5, drive system 100 includes motor 101, reduction box 102 and shaft coupling 103, and three is successively
It is attached, forms transmission mechanism.Feed system 200 includes feed hopper 201 and charging drive component 202.Control system 300 is wrapped
Include the first control panel 301 and the second control panel 302, the major control drive system 100 of the first control panel 301 and charging
System 200, the major control compression moulding system 500 of the second control panel 302.Support system 400 includes first base 401, the second bottom
Seat 402 and support frame 403.Compression moulding system 500 includes machine barrel 501, screw rod 502, temperature-controlling component 503, air outlet 504, shaping mould
Tool 505, discharging opening 506, screw rod 502 are arranged at the inner chamber of machine barrel 501, and temperature-controlling component 503 and air outlet 504 are arranged at machine barrel
501 both sides, mould 505 and discharging opening 506 are arranged at the end of machine barrel 501.
Further, in drive system 100, the output par, c of motor 101 is connected with reduction box 102, slows down
Case 102 is connected with shaft coupling 103.The effect of drive system 100 is that required moment of torsion and rotating speed are provided to screw rod 502 so that
Screw rod 502 works in certain range of speeds internal rotation, by manufacturing condition requirement, ensures screw rod 502 in certain torque
Smoothly rotated under effect, complete raw material plasticizing and be pushed out the transportation work of machine barrel.Wherein, reduction box 102 in prime mover and
Plaing a part of to match rotating speed between working machine or executing agency and transmit torque, reduction box 102 is a kind of relatively accurate machinery,
Purpose using it is to reduce rotating speed, increases torque.In the present embodiment, reduction box 102 effectively increases the moment of torsion of rotation, subtracts
The loss of energy is lacked.And shaft coupling 103 is allowed to altogether for two axles (driving shaft and driven shaft) coupled in different institutions
It is same to rotate to transmit the machine components of moment of torsion.When using the extruder, the screw rod 502 of the compression moulding system 500 passes through
Shaft coupling 103 and reduction box 102 are engaged with motor 101, motor 101 drive reduction box 102 and shaft coupling 103 with
And screw rod 502 is moved, the driving mechanism of total is realized.
In feed system 200, including feed hopper 201 and charging drive component 202, feed hopper 201 is with feeding driving group
Part 202 connects, and feed hopper 201 is located at the surface of machine barrel 501 in compression moulding system 500, and communicates therewith.Feed drive component
202 points are two parts, respectively outside motor, and the agitator in feed hopper 201, when deployed, into feed hopper 201
Fed intake, while motor driven mixer is stirred, and is driven the material in feed hopper 201 quickly to fall into machine barrel 501, is carried
Back is handled raw material, effectively raises operating efficiency.
Control system 300 has two control panels, respectively the first control panel 301 and the second control panel 302.Squeeze
The screw speed that goes out during the control system in machine equipment is mainly used to realize extruder production work, each position heating-up temperature
The control of the technological parameters such as melt pressure is expected with plasticizing.The control system of extruder is controlled using instrument more at present.In this implementation
In example, the major control drive system 100 of the first control panel 301 and feed system 200, the second control panel 302 are mainly controlled
Compression moulding system 500 processed.Specifically, the rotating speed of the major control motor 101 of the first control panel 301, and charging driving group
The rotating speed of motor in part 202, it can so control the mixing speed of agitator in the rotating speed and feed hopper 201 of screw rod 502.The
One control panel 301 is arranged at the outer side edges of first base 401.It is each in the major control compression moulding system 500 of second control panel 302
Temperature, environment temperature and the charge temperature at position etc., so as to control technological temperature of the raw material in extrusion plasticizing stable one
In fixed scope, with the quality of production.Wherein, temperature-controlling component 503 is also controlled by it.Second control panel 302 is arranged at the second bottom
The outer side edges of seat 402.
Support system 400 has three supporters, respectively first base 401, second base 402 and support frame 403.Tool
Body, wherein first base 401 is used to support drive system 100, and its top is provided with motor 101, reduction box 102 and connection
Axle device 103.Second base 402 is used to support support frame 403 and compression moulding system 500, and second base 402 is provided with support above
Frame 403, the lower end of support frame 403 are connected with the upper surface of second base 402, and the machine barrel 501 of compression moulding system 500 is together with screw rod
502 are arranged at the upper surface of support frame 403.Whole support system 400 serves fixed cell part, sets the work of control system
With.
Main part in compression moulding system 500 as whole extruder device, its major function are that raw material is passed through from here
Extruding, heating, be plastifying fusion state by Solid State Transformation, then flow distribution plate (being also porous plate) equivalent from the front end of machine barrel 501, etc.
Pressure ground is uniformly extruded, into moulded products mould.Its primary structure includes machine barrel 501, screw rod 502, temperature-controlling component 503, air-out
A series of components such as mouth 504, mould 505, discharging opening 506.Screw rod 502 is arranged at the inner chamber of machine barrel 501, and through the beginning
Eventually.The upper end of machine barrel 501 is connected with feed hopper 201, and interconnects.Material is put into from feed hopper 201, and enters machine barrel
After 501, material is extruded, is transferred to end by the screw rod 502 rotated in machine barrel 501.Temperature-controlling component 503 is arranged at machine barrel 501
Outer side edges, for the environment temperature for being passed through the air-flow of certain temperature to control inside machine barrel 501, ensure that penetralia was being extruded
Environment temperature is at utmost reduced in journey to the respectively influence of processing warm area temperature in Screw Extrusion.Air outlet 504 relative to
Temperature-controlling component 503 is arranged at the opposite side of machine barrel 501, and the air-flow of machine barrel 501 is passed through for discharging.Mould 505 and go out
Material mouth 506 is arranged at the outer end of compression moulding system 500, and wherein mould 505 is used to be that material is moulding.Discharging opening 506 is set
On the downside of the outer end of mould 505, for exporting molding materials.
In whole production process, screw rod 502 and machine barrel 501 are responsible for the task of plasticizing and the pressurization of material.Screw rod 502
It is that the critical component of extruder, extrusion yield, melt temperature, melt uniformity and the power consumption of extruder etc. depends primarily on
The structure of screw rod 502.The diameter D of screw rod 502 is the basic parameter of screw rod 502, and the specification of extruder often carrys out table with the diameter of screw rod 502
Show.The draw ratio L/D of screw rod 502 is the important parameter of screw rod 502.Draw ratio is big, and plasticizing is uniform, at present the length of general screw 502
Footpath ratio mostly 25 or so.
The specific operation principle of the present embodiment is：Whole extruder device is arranged on support system 400, control system
300 two control panels control mechanical movement and the temperature levels of extruder respectively.When material is entered by feed hopper 201
After machine barrel 501, rotation is synchronized by the screw rod 502 that drive system 100 is connected, promotes material to occur in machine barrel 501
Mobile, material, which is under pressure in suitable environment temperature and obtains heat, occurs metamorphosis, finally by mould 505
After shaping, by the discharger of discharging opening 506.
In addition to other complementary effects further, in this course,.After material knocks down hopper 201, driving
In the presence of component 202, material can be accelerated and rapidly enter machine barrel 501.Motor 101, reduction box in drive system 100
102 and shaft coupling 103 form transmission and rotation be delivered to screw rod 502.Temperature-controlling component 503 is maintained in machine barrel 501, outside screw rod
Regional temperature is stable (to have two regions, one is that machine barrel 501 is interior, the perimeter outside screw rod in machine barrel 501；One is spiral shell
Where bar, the interior zone of each workspace is included；Interior zone has separation layer with perimeter), temperature-controlling component 503 maintains
The temperature stabilization of perimeter, and non-proxy heater heats to each workspace in interior zone, high degree reduces
Due to the unstable influence to caused by the temperature of internal each workspace of extruder environment temperature.
Need to ensure that the temperature of each workspace of the penetralia of machine barrel 501 and environment temperature are in during production and processing
Suitable scope.And the control of temperature range is mainly implemented by the second control panel 302 to adjust.Pass through the second control panel
302 can adjust each area's temperature of the penetralia of machine barrel 501, be set to 190-200 DEG C of the firstth area, the second 200-205 DEG C of area, and
Three 205-210 DEG C of areas, 210-220 DEG C of the second control panel 302 of head can also adjust the environment temperature of machine barrel 501.Wherein, machine barrel
The regulation of environment temperature is mainly realized by temperature-controlling component 503 in 501.
The present embodiment is different from above-described embodiment,
Temperature-controlling component 503 includes magnetic flexible 503a, air intake 503b, air inlet 503c.
This equipment controls the environment temperature of inside using gas flow temperature, i.e., the gas of required temperature is passed through to internal environment
Stream, so as to realize lasting temperature control.
The specific workflow of the present embodiment is：Air-flow with specified temp enters device from air intake 503b, then leads to
Cross air inlet 503c to enter in machine barrel 501, finally discharged from air outlet 504.
How to realize that temperature-controlling component 503 is controlled to the size of gas flow.Therefore, the present embodiment and above-described embodiment
Difference be：Air quantity controller 509 is provided with air inlet 503c, it can be realized to being passed through in machine barrel 501
Gas flow is defined.
As seen in figs. 8-10, in the present embodiment, air quantity controller 509 includes the first counterpart 509a, the second cooperation
Part 509b, resilience component 509c and fixture 509d.The interspersed connections of first counterpart 509a and the second counterpart 509b, first
Counterpart 509a is arranged on fixture 509d by resilience component 509c, and the second counterpart 509 and fixture 509d are mutual
Connection.
Specifically, the first counterpart 509a plays a part of promoting the second counterpart 509b to carry out eccentric rotary.First matches somebody with somebody
Component 509a, which includes circular magnetic patch 509a-1 and gangbar 509a-2, circular magnetic patch 509a-1, has magnetic, and planform is circle
Shape, centre position have a circular hole.Gangbar 509a-2 has four, and gangbar 509a-2 wherein one end is fixed on circle
On magnetic patch 509a-1, other end is outward-dipping in a corresponding plane, and the plane is by gangbar 509a-2 in circle
On the straight line that contact point on magnetic patch 509a-1 is linked to be with the center of circle, and the plane is flat where circular magnetic patch 509a-1
Face.Four gangbar 509a-2 are evenly distributed on circular magnetic patch 509a-1 surface, preferably, four gangbar 509a-2
Angle of inclination is identical, is centrosymmetric mutually, and four contact points are also distributed on the certain circumference of diameter simultaneously.
Second counterpart 509b, which has, covers air inlet 503c, determines the effect of gas flow size.Second counterpart
509b is circular contour, similarly has four corresponding to gangbar 509a-2, and four shape and structures are identical.It passes through rotating shaft
509b-1 is connected with fixture 509d bias, and can carry out eccentric rotary around rotating shaft 509b-1.Second counterpart 509b exists
The outer end with hole 509b-2, four gangbar 509a-2 is corresponding respectively on the opposite side of diameter where rotating shaft 509b-1 stretches into
Into the second counterpart 509b four hole 509b-2, linkage is formed.
Resilience component 509c has the function that the first counterpart 509a and the second counterpart 509b carrying out resilience playback.Return
Playing component 509c includes telescopic shaft 509c-1, base 509c-2, compression spring 509c-3 and spring leaf 509c-4.Telescopic shaft
509c-1 one end is connected with base 509c-2, and fixed, and the other end is provided with a port, and port is circle, and diameter is big
In telescopic shaft 509c-1 external diameter.Compression spring 509c-3 is sheathed on telescopic shaft 509c-1, both ends by base 509c-2 and
Telescopic shaft 509c-1 port is limited.Spring leaf 509c-4, which corresponds to four the second counterpart 509b, has four, and shape
It is identical, it is " V " shape spring leaf.Spring leaf 509c-4 one side is longer, and shorter on one side, shorter one end is fixed on base
509c-2 edge, longer one end deviates from base 509c-2, towards outside, and is against the outer of corresponding second counterpart 509b
Edge.In structure, the spring leaf 509c-4 after fixing is in inverted " v ".It is pointed out that in the first counterpart 509a circle
On shape magnetic patch 509a-1, Circularhole diameter is slightly larger than telescopic shaft 509c-1 outside dimension.Meanwhile circular magnetic patch 509a-1 passes through it
On circular hole be sheathed on telescopic shaft 509c-1, simultaneously prop up telescopic shaft 509c-1 port, another side props up compression spring
509c-3。
Fixture 509d has the function that fixed whole air quantity controller 509, and its outline is circle, at two mutually
Vertical diametrically has connecting rod, and two connecting rods are vertically compared to the center of circle, and circle centre position has certain space to put
Put and fix resilience component 509c base 509c-2.Space between connecting rod is used for the circulation of gas.
In the present embodiment, air quantity controller 509 can control the first counterpart 509a by the effect of external magnetic field
Motion, so as to pass through the size of the mechanisms influence air flow rate of linkage.Detailed process comprises the following steps：
First, external magnetic field (magnetic flexible 503a) strengthens, be sheathed on circular magnetic patch 509a-1 on telescopic shaft 509c-1 by
Magnetic flexible 503a repulsive force effect moves inward along telescopic shaft 509c-1.
2nd, the magnetic flexible 503a of motion drives the gangbar 509a-2 being fixed thereon to move simultaneously, due to linkage
The bar 509a-2 other end is interspersed in the second counterpart 509b hole 509b-2, therefore drives the second counterpart 509b to rotate
Axle 509b-1 carries out eccentric rotary, and the direction of rotation is the inner side of device.
3rd, the second counterpart 509b of inside side eccentric rotary gradually blocks a part of air inlet 503c area, from
And it have impact on the size of gas flow.
4th, continue to increase magnetic field, until repulsive force caused by external magnetic field is equal to spring leaf 509c-4 bounce or waited
In the holding power sum that spring leaf 509c-4 bounce provides with base 509c-2, now the flow of gas is minimum.
5th, magnetic field is reduced, repulsive force caused by magnetic field is relatively reduced, and the first counterpart 509a is by compression spring 509c-3
Bounce move out, while the second counterpart 509b is by the outside eccentric rotary of effect of spring leaf 509c-4 bounces,
Whole device gradually playbacks.
6th, during device playback, the area that the second counterpart 509b covers air inlet 503c is reduced, gas stream quantitative change
Greatly.
In the present embodiment, support frame 403 passes through chuck 404 and spacing group to reference picture 11-17 with second base 402
Part 405 is attached, both can mutual buckle, while separation can also be dismantled.Wherein, chuck 404 is arranged at support frame 403
Downside, and in close to one end of inner side.Limit assembly 405 is arranged at the upside of second base 402, also corresponds to chuck
404 are in close to one end of inner side.Specifically, chuck 404 has overhanging short tube 404a, snapping outer rim 404b and buckle
404c.Overhanging short tube 404a is open circles tubulose, is extended downwardly by the medial end of the lower surface of support frame 403, the side of its outer end
Edge is provided with the snapping outer rim 404b of evagination, and snapping outer rim 404b is uniform-distribution with four buckle 404c in annular shape, surrounding.Card
It is in hook-shaped to detain 404c, and is seen from bottom to top, and crotch direction is clockwise.Limit assembly 405 includes external ring 405a, locking
Block 405b and wheel rack 405c.Wherein, external ring 405a's is generally circular, is cut with stopper slot 405d, stopper slot thereon
405d is cut out on the basis of plane where external ring 405a, and stopper slot 405d shape corresponds to snapping in chuck 404
Outer rim 404b and buckle 404c combined shaped, external ring 405a thickness are slightly larger than buckle 404c thickness.Clamping block 405b
It is arranged on stopper slot 405d, and is covered on the relevant position of corresponding buckle 404c shapes.It is provided with external ring 405a
A bit of wheel rack 405c, wheel rack 405c longitudinal side are bonded external ring 405a, are vertically arranged, and its outside has the gear teeth,
Inner side is smooth.Correspond in wheel rack 405c one end on the outside of external ring 405a and be provided with arc notch 405e.
In the present embodiment, limit assembly 405 is wholy set in the upside of second base 402, meanwhile, second base 402
Upside correspond to limit assembly 405 external ring 405a outer contour shapes be provided with four fixture 402a, fixture 402a
In hook-shaped, the total of limit assembly 405 can be fixed.Meanwhile the upside of second base 402 is additionally provided with a fixed mount
402b, fixed mount 402b are inverted "L" shaped, and the end of its side wall is fixed in second base 402, and upper surface center offers
One circular hole, vertically corresponded on the surface of second base 402 with a positioning with fixed knob part 406, circular hole to place
Hole 402c, the lower end of knob part 406 can be made embedded and fixed.
In the present embodiment, the connection and fixation of chuck 404 and limit assembly 405 need the cooperation of knob part 406 to complete.
Knob part 406 plays a part of locking and consolidating wherein.Knob part 406 includes taking over a business 406a, toothed disc 406b, fixed disk
406c, connecting shaft 406d and locating shaft 406e.Take over a business the top that 406a is in knob part 406, its home position and connecting shaft
406d end face is attached, connecting shaft 406d other end tooth connection wheel disc 406b, toothed disc 406b opposite side connection
Fixed disk 406c, fixed disk 406c opposite side connection locating shaft 406e.Further, the arc at the above-mentioned edge of limit assembly 405
V notch v 405e sizes correspond to fixed disk 406c, and are used for fixed knob part 406.The wheel rack 405c moulds of limit assembly 405
Number is identical with toothed disc 406b modulus, can combine linkage.
Limit assembly 405 before being attached, is first arranged in second base 402 by support frame 403 with second base
In fixture 402a, limit assembly 405 can rotate in it.Again by the buckle 404c alignment limit assemblies 405 of chuck 404
Stopper slot 405d, and be placed into groove.Then knob part 406 is arranged on fixed mount 402b, specifically, by knob part 406
Connecting shaft 406d it is interspersed be fixed in fixed mount 402b circular hole, locating shaft 406e is directed at positioning hole 402c down.Now revolve
Button part 406 is just directed at wheel rack 405c initiating terminal, rotates in an anti-clockwise direction knob part 406, while driven wheel rack 405c
And whole limit assembly 405 is rotated counterclockwise, until buckle 404c is completely embedded into stopper slot 405d.Now, clamping block
405b is located above buckle 404c, fixes buckle 404c so that whole chuck 404 can not come off, and arc notch 405e is just
It is located at the lateral location of knob part 406 well.Slipped to ensure that accidentalia causes limit assembly 405 to rotate, it is complete in buckle 404c
During complete embedded stopper slot 405d, push-turn key part 406 so that fixed disk 406c thereon is stuck in arc notch 405e so that
Limit assembly 405 can not loosen.So far, support frame 403 is connected with second base 402 and finished.
Spinning is carried out through melt spinning after extrusion, obtains composite fibre；
Composite fibre is subjected to shredding, combing, stacks networking, it is then hot-forming, produced after surface treatment resistance to old
Change acoustical cotton.
Sound absorption qualities test GBJ 88-1985 are carried out to acoustical cotton《Standing-wave-tube method acoustic absorptivity and specific acoustic impedance measuring gage
Model》Measure.The acoustic absorptivity average value of frequency range is rounded as the excellent of evaluation its sound absorption qualities.
Acoustical cotton acoustic absorptivity made from final measure is 0.601.
Resistance to ag(e)ing tests measurement result, ageing resistance (150h)：It is flawless, indeformable.
It should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention and it is unrestricted, although with reference to preferable
The present invention is described in detail embodiment, it will be understood by those within the art that, can be to the technology of the present invention
Scheme is modified or equivalent substitution, and without departing from the spirit and scope of technical solution of the present invention, it all should cover in this hair
Among bright right.
Claims (7)
- A kind of 1. preparation method of ageing-resistant acoustical cotton, it is characterised in that：Including,In terms of mass parts, raw material includes,Lauryl sodium sulfate 0.5-1, carragheen 0.5-1, sepiolite powder 10-15, polypropylene 110-120, styrene 5-7, first Base butyl acrylate 4-6, triethanolamine borate 5-6, pentaerythrite 2-4, amido silicon oil 1-2, azodiisobutyronitrile 0.05- 0.1, dibutyl sebacate 1-2, antioxidant MB 2-3；Lauryl sodium sulfate is configured to the aqueous solution and added in reactor jointly with carragheen react, then adds sepiolite Powder, ultrasonic disperse, temperature is adjusted, styrene, butyl methacrylate and the isobutyl of azo two are added under logical nitrogen protective condition Nitrile stirs, cooled and filtered, washing, drying, then adds amido silicon oil and is well mixed, modified powder is obtained after air-flow crushing；By modified powder and polypropylene, triethanolamine borate, pentaerythrite, dibutyl sebacate, antioxidant MB mixed at high speed Uniformly, then extruded by extruder in 190~220 DEG C of melting mixings, carry out spinning through melt spinning, obtain composite fibre；The composite fibre is subjected to shredding, combing, stacks networking, it is then hot-forming, produced after surface treatment resistance to old Change acoustical cotton.
- 2. the preparation method of ageing-resistant acoustical cotton according to claim 1, it is characterised in that：In the common addition reactor Reaction, it is the stirring reaction 0.5-1h under 85-90 DEG C, 1000-1200rpm.
- 3. the preparation method of ageing-resistant acoustical cotton according to claim 1 or claim 2, it is characterised in that：The adjustment temperature, it is Temperature is adjusted to 65-70 DEG C.
- 4. the preparation method of ageing-resistant acoustical cotton according to claim 3, it is characterised in that：It is described by lauryl sodium sulfate The aqueous solution is configured to, it is the aqueous solution that lauryl sodium sulfate is configured to 0.5-1%.
- 5. according to the preparation method of ageing-resistant acoustical cotton any one of claim 1,2 or 4, it is characterised in that：It is described Styrene, butyl methacrylate and azodiisobutyronitrile stirring are added under logical nitrogen protective condition, it is protected in logical nitrogen Under the conditions of add styrene, butyl methacrylate and azodiisobutyronitrile stirring 2-3h.
- 6. the preparation method of ageing-resistant acoustical cotton according to claim 5, it is characterised in that：The ultrasonic disperse, wherein, surpass Acoustic frequency is 30-40kHz.
- 7. according to the preparation method of ageing-resistant acoustical cotton any one of claim 1,2,4 or 6, it is characterised in that：It is described Ultrasonic disperse, wherein, the ultrasonic disperse time is 5-10min.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710975271.2A CN107574579A (en) | 2017-10-14 | 2017-10-14 | A kind of preparation method of ageing-resistant acoustical cotton |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710975271.2A CN107574579A (en) | 2017-10-14 | 2017-10-14 | A kind of preparation method of ageing-resistant acoustical cotton |
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|---|---|---|---|
| CN201710975271.2A Withdrawn CN107574579A (en) | 2017-10-14 | 2017-10-14 | A kind of preparation method of ageing-resistant acoustical cotton |
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| Country | Link |
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2017
- 2017-10-14 CN CN201710975271.2A patent/CN107574579A/en not_active Withdrawn
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