CN103306390B - A kind of 3D acoustic(al)absorbent and preparation method thereof - Google Patents
A kind of 3D acoustic(al)absorbent and preparation method thereof Download PDFInfo
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- CN103306390B CN103306390B CN201310242611.2A CN201310242611A CN103306390B CN 103306390 B CN103306390 B CN 103306390B CN 201310242611 A CN201310242611 A CN 201310242611A CN 103306390 B CN103306390 B CN 103306390B
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Abstract
The present invention discloses a kind of 3D acoustic(al)absorbent and preparation method thereof, a kind of 3D acoustic(al)absorbent, comprise the first polyester staple fiber layer, first polyester staple fiber layer surface uniform is distributed with pinprick, the aperture of pinprick is not more than 2mm, the degree of depth of acupuncture is greater than 2/3rds of the first polyester staple fiber layer thickness, and needling density is 1.0 ~ 1.5 pins/cm
2.The present invention adopts polyester staple fiber as raw material, can make fibres bond together during the first polyester staple fiber melting, and therefore, this 3D acoustic(al)absorbent material environment friendly, does not discharge hazardous substances, and recyclable; 3D acoustic(al)absorbent is affixed on after on wall by the present invention, can form cavity, eliminate keel with body of wall, decreases the vibration passing of sound, thus better serves the effect of sound absorption reduction; This 3D acoustic(al)absorbent material therefor environmental protection, easily reclaim, obtained 3D acoustic(al)absorbent acoustically effective is good, especially significantly improves bass acoustically effective.
Description
Technical field
The present invention relates to a kind of 3D acoustic(al)absorbent and preparation method thereof, belong to building materials component and construction field.
Background technology
Common sound absorption system is generally with traditional damping material fibrous material, flex foam for sandwich layer, forms, be widely used in the field such as architectural decoration and venue construction with metal material or nonmetals for skeleton or surface layer.
Existing acoustic(al)absorbent install cumbersome, complicated operation, sound-absorbing effect are poor, decorate also unsightly.The use of keel increases the workload of construction, and the effect of sound absorption also can play impact in various degree, and manufacturing process is complicated, needs multiple working procedure just can complete.
Summary of the invention
The object of this invention is to provide a kind of 3D acoustic(al)absorbent and preparation method thereof.
For solving the problems of the technologies described above, technical scheme of the present invention is:
A kind of 3D acoustic(al)absorbent, comprise the first polyester staple fiber layer, the first polyester staple fiber layer surface uniform is distributed with pinprick, and the aperture of pinprick is not more than 2mm, the degree of depth of acupuncture is greater than 2/3rds of the first polyester staple fiber layer thickness, and needling density is 1.0 ~ 1.5 pins/cm
2.
Applicant finds after deliberation, the acoustic(al)absorbent of said structure, and compared with acoustic(al)absorbent of the prior art, sound-absorbing effect has had great lifting.
In order to improve sound-absorbing effect, the first polyester staple fiber layer comprises: mixed uniformly first polyester staple fibers peacekeeping second polyester staple fiber, or mixed uniformly first polyester staple fibers peacekeeping Fypro.
Above-mentioned first polyester staple fiber refers to that fusing point is the polyester staple fiber of 160 DEG C ~ 200 DEG C; Second polyester staple fiber refers to that fusing point is the polyester staple fiber of 250 DEG C ~ 260 DEG C.
The mass ratio of the second polyester staple fiber or Fypro and the first polyester staple fiber is (1:1) ~ (1:2.3).
In order to ensure sound-absorbing effect, the thickness of the first polyester staple fiber layer is 3mm ~ 10mm.
Conveniently install, 3D acoustic(al)absorbent is uncovered rectangular structure.
Conveniently using, the length of 3D acoustic(al)absorbent and be widely 600mm ~ 1000mm, is highly 40mm ~ 90mm.
The preparation method of above-mentioned 3D acoustic(al)absorbent, comprises the following steps that order connects:
A first polyester staple fibers peacekeeping fiber A mixes by (), obtain composite fibre; Described fiber A is the second polyester staple fiber or Fypro; The fusing point of the first polyester staple fiber is 160 DEG C ~ 200 DEG C; The fusing point of the second polyester staple fiber is 250 DEG C ~ 260 DEG C;
B (), by composite fibre shredding, combing, forms fleece;
C fleece acupuncture, roll-in are obtained cellucotton by (); The needling density of described acupuncture is 1.0 ~ 1.5 pins/cm
2, rolling pressure during roll-in is 0.5 ~ 1Mpa, and roll-in speed is 1.1 ~ 1.3m/min;
D (), by cellucotton heat treatment, heat treatment temperature is 160 DEG C ~ 210 DEG C, and heat treatment time is 2min ~ 3min;
E cellucotton after heat treatment is entered moulding press press mold by (), can obtain 3D acoustic(al)absorbent, and the pressure of moulding press press mold is 1.47 × 10
5n/m
2~ 2.94 × 10
5n/m
2, the pressing mold time is 10s ~ 15s.
In above-mentioned steps (a), the mass ratio of fiber A and the first polyester staple fiber is (1:1) ~ (1:2.3); In step (c), roller spacing is preferably 20 ~ 50mm.
The various required pattern such as leaf, stone, flower, personage, landscape, word can be suppressed in above-mentioned 3D acoustic(al)absorbent surface, to reach better decorative effect.
The application of above-mentioned 3D acoustic(al)absorbent, 3D acoustic(al)absorbent when mounted, and forms cavity structure between body of wall.
The not specified technology of the present invention is prior art.
The present invention adopts polyester staple fiber as raw material, can make fibres bond together during the first polyester staple fiber melting, and therefore, this 3D acoustic(al)absorbent material environment friendly, does not discharge hazardous substances, and recyclable; 3D acoustic(al)absorbent is affixed on after on wall by the present invention, can form cavity, eliminate keel with body of wall, decreases the vibration passing of sound, thus better serves the effect of sound absorption reduction; This 3D acoustic(al)absorbent material therefor environmental protection, easily reclaim, obtained 3D acoustic(al)absorbent acoustically effective is good, especially significantly improves bass acoustically effective; The present invention can play good decorative effect, can be changed arbitrarily the profile of acoustic(al)absorbent by the shape of replaceable mould, obtains the figure oneself needed; This 3D acoustic(al)absorbent is light, is easy to install.
Accompanying drawing explanation
Fig. 1 is the sectional drawing of 3D acoustic(al)absorbent;
In figure, 1 is the first polyester staple fiber layer, and 2 is pinprick, and 3 is the second polyester staple fiber, and 4 is Fypro.
Detailed description of the invention
In order to understand the present invention better, illustrate content of the present invention further below in conjunction with embodiment, but content of the present invention is not only confined to the following examples.
Embodiment 1
3D acoustic(al)absorbent as shown in Figure 1, comprises the first polyester staple fiber layer, is evenly distributed with the first polyester staple fiber, the second polyester staple fiber in the first polyester staple fiber layer, and the fusing point of the first polyester staple fiber is 180 DEG C; The fusing point of the second polyester staple fiber is 255 DEG C.The thickness of the first polyester staple fiber layer is 4mm; 3D acoustic(al)absorbent is uncovered rectangular structure, long and is widely 700mm, and height is 40mm.
The mass ratio of the second polyester staple fiber and the first polyester staple fiber is 1:1.
First polyester staple fiber layer surface uniform is distributed with pinprick, and the aperture of pinprick is 1.8mm, and the degree of depth of acupuncture is 3/4ths of the first polyester staple fiber layer thickness, and needling density is 1.0 pins/cm
2.
The preparation method of above-mentioned 3D acoustic(al)absorbent, comprises the steps:
A first polyester staple fibers peacekeeping second polyester staple fiber adds in raw material feeding unit by (), fiber mixes through feeding unit, and the mass ratio of the second polyester staple fiber and the first polyester staple fiber is 1:1;
B first mixed fiber is carried out pre-shredding by (), agglomerated fiber together becomes loose; Carry out smart shredding after pre-shredding completes, fiber is mixed uniformly; The compressed device of fiber after shredding, throws carding equipment into, and fiber forms continuous print fleece after carding equipment;
(c) by fleece by obtaining cellucotton body after acupuncture, roll-in; The needling density of described acupuncture is 1.0 pins/cm
2; Rolling pressure during roll-in is 0.8Mpa, and roll-in speed is 1.26m/min, and roller spacing is 25mm;
D cellucotton body that step (c) obtains by () enters baking oven, carries out thermal finalization process; Heat setting temperature is 190 DEG C, and heat-setting time is 2min;
Cellucotton after e thermal finalization process that step (d) obtains by (), the pressure carrying out the moulding press described in mold pressing process is 1.74 × 10
5n/m
2, the pressing mold time is 10s.
Namely the acoustic(al)absorbent that step (e) obtains can be used as finished product and dispatches from the factory after trimming, test package.
Embodiment 2
3D acoustic(al)absorbent, comprises the first polyester staple fiber layer, is evenly distributed with the first polyester staple fiber, the second polyester staple fiber in the first polyester staple fiber layer, and the fusing point of the first polyester staple fiber is 160 DEG C; The fusing point of the second polyester staple fiber is 258 DEG C.The thickness of the first polyester staple fiber layer is 8mm; 3D acoustic(al)absorbent is uncovered rectangular structure, long and is widely 800mm, and height is 80mm.
Second polyester staple fiber and the first polyester staple fiber mass ratio are 1:1.5.
First polyester staple fiber layer surface uniform is distributed with pinprick, and the aperture of pinprick is 1.5mm, and the degree of depth of acupuncture is 4/5ths of the first polyester staple fiber layer thickness, and needling density is 1.2 pins/cm
2.
The preparation method of above-mentioned 3D acoustic(al)absorbent, comprises the steps:
A first polyester staple fibers peacekeeping second polyester staple fiber adds in raw material feeding unit by (), fiber mixes through feeding unit, and the second polyester staple fiber and the first polyester staple fiber mass ratio are 1:1.5;
B first mixed fiber is carried out pre-shredding by (), agglomerated fiber together becomes loose; Carry out smart shredding after pre-shredding completes, fiber is mixed uniformly; The compressed device of fiber after shredding, throws carding equipment into, and fiber forms continuous print fleece after carding equipment;
(c) by fleece by obtaining cellucotton body after acupuncture, roll-in; The needling density of described acupuncture is 1.2 pins/cm
2; Rolling pressure during roll-in is 0.6Mpa, and roll-in speed is 1.18m/min, and roller spacing is 20mm;
D cellucotton body that step (c) obtains by () enters baking oven, carries out thermal finalization process; Heat setting temperature is 185 DEG C, and heat-setting time is 2.5min;
Cellucotton after e thermal finalization process that step (d) obtains by (), carries out mold pressing process; The pressure of described moulding press is 2.14 × 10
5n/m
2, the pressing mold time is 12s;
Namely the acoustic(al)absorbent that step (e) obtains can be used as finished product and dispatches from the factory after trimming, test package.
Embodiment 3
3D acoustic(al)absorbent, comprises the first polyester staple fiber layer, is evenly distributed with the first polyester staple fiber, the second polyester staple fiber in the first polyester staple fiber layer, and the fusing point of the first polyester staple fiber is 180 DEG C; The fusing point of the second polyester staple fiber is 260 DEG C.The thickness of the first polyester staple fiber layer is 8mm; 3D acoustic(al)absorbent is uncovered rectangular structure, long and is widely 900mm, and height is 80mm.
The mass ratio of the second polyester staple fiber and the first polyester staple fiber is 1:2.3.
First polyester staple fiber layer surface uniform is distributed with pinprick, and the aperture of pinprick is 1.5mm, and the degree of depth of acupuncture is 4/5ths of the first polyester staple fiber layer thickness, and needling density is 1.1 pins/cm
2.
The preparation method of above-mentioned 3D acoustic(al)absorbent, comprises the steps:
A first polyester staple fibers peacekeeping second polyester staple fiber adds in raw material feeding unit by (), fiber mixes through feeding unit, and the mass ratio of the second polyester staple fiber and the first polyester staple fiber is 1:2.3;
B first mixed fiber is carried out pre-shredding by (), agglomerated fiber together becomes loose; Carry out smart shredding after pre-shredding completes, fiber is mixed uniformly; The compressed device of fiber after shredding, throws carding equipment into, and fiber forms continuous print fleece after carding equipment;
(c) by fleece by obtaining cellucotton body after acupuncture, roll-in; The needling density of described acupuncture is 1.1 pins/cm
2; Rolling pressure during roll-in is 0.6Mpa, and roll-in speed is 1.20m/min, and roller spacing is 30mm;
D cellucotton body that step (c) obtains by () enters baking oven, carries out thermal finalization process; Heat setting temperature is 200 DEG C, and heat-setting time is 2.5min;
Cellucotton after e thermal finalization process that step (d) obtains by (), carries out mold pressing process; The pressure of described moulding press is 2.48 × 10
5n/m
2, the pressing mold time is 13s;
Namely the acoustic(al)absorbent that step (e) obtains can be used as finished product and dispatches from the factory after trimming, test package.
Embodiment 4
3D acoustic(al)absorbent, comprises the first polyester staple fiber layer, is evenly distributed with the first polyester staple fiber, Fypro in the first polyester staple fiber layer, and the fusing point of the first polyester staple fiber is 190 DEG C; The thickness of the first polyester staple fiber layer is 8mm; 3D acoustic(al)absorbent is uncovered rectangular structure, long and is widely 800mm, and height is 90mm.
The mass ratio of Fypro and the first polyester staple fiber layer is 1:1.5.
First polyester staple fiber layer surface uniform is distributed with pinprick, and the aperture of pinprick is 1.5mm, and the degree of depth of acupuncture is 4/5ths of the first polyester staple fiber layer thickness, and needling density is 1.5 pins/cm
2.
The preparation method of upper 3D acoustic(al)absorbent, comprises the steps:
A first polyester staple fibers peacekeeping second polyester staple fiber adds in raw material feeding unit by (), fiber mixes through feeding unit, and the mass ratio of Fypro and the first polyester staple fiber layer is 1:1.5;
B first mixed fiber is carried out pre-shredding by (), agglomerated fiber together becomes loose; Carry out smart shredding after pre-shredding completes, fiber is mixed uniformly; The compressed device of fiber after shredding, throws carding equipment into, and fiber forms continuous print fleece after carding equipment;
(c) by fleece by obtaining cellucotton body after acupuncture, roll-in;
The needling density of described acupuncture is 1.5 pins/cm
2; Rolling pressure during roll-in is 0.9Mpa, and roll-in speed is 1.25m/min, and roller spacing is 50mm;
D cellucotton body that step (c) obtains by () enters baking oven, carries out thermal finalization process; Heat setting temperature is 200 DEG C, and heat-setting time is 3min;
Cellucotton after e thermal finalization process that step (d) obtains by (), carries out mold pressing process; The pressure of described moulding press is 2.94 × 10
5n/m
2, the pressing mold time is 15s.
Namely the acoustic(al)absorbent that step (e) obtains can be used as finished product and dispatches from the factory after trimming, test package.
Detect the sound absorbing capabilities of the 3D acoustic(al)absorbent that the present invention obtains below, table 1 is the sound absorption coefficient of each product; The detection method of sound absorption coefficient adopts standard to be GB/T20247-2006 " acoustic absorptivity measurements of acoustic reverberation room ", checkout equipment: BK4418 type building acoustics analyzer; Environment temperature 22 DEG C, humidity 73%.
Table 1 is the sound absorption coefficient of each product
Claims (6)
1. a 3D acoustic(al)absorbent, it is characterized in that: comprise the first polyester staple fiber layer, the first polyester staple fiber layer surface uniform is distributed with pinprick, and the aperture of pinprick is not more than 2mm, the degree of depth of acupuncture is greater than 2/3rds of the first polyester staple fiber layer thickness, and needling density is 1.0 ~ 1.5 pins/cm
2;
First polyester staple fiber layer comprises: mixed uniformly first polyester staple fibers peacekeeping second polyester staple fiber, or mixed uniformly first polyester staple fibers peacekeeping Fypro;
The mass ratio of the second polyester staple fiber or Fypro and the first polyester staple fiber is (1:1) ~ (1:2.3);
The preparation method of above-mentioned 3D acoustic(al)absorbent, comprises the following steps that order connects:
A first polyester staple fibers peacekeeping fiber A mixes by (), obtain composite fibre; Described fiber A is the second polyester staple fiber or Fypro; The fusing point of the first polyester staple fiber is 160 DEG C ~ 200 DEG C; The fusing point of the second polyester staple fiber is 250 DEG C ~ 260 DEG C;
B (), by composite fibre shredding, combing, forms fleece;
C fleece acupuncture, roll-in are obtained cellucotton by (); The needling density of described acupuncture is 1.0 ~ 1.5 pins/cm
2, rolling pressure during roll-in is 0.5 ~ 1Mpa, and roll-in speed is 1.1 ~ 1.3m/min;
D (), by cellucotton heat treatment, heat treatment temperature is 160 DEG C ~ 210 DEG C, and heat treatment time is 2min ~ 3min;
E cellucotton after heat treatment is entered moulding press press mold by (), can obtain 3D acoustic(al)absorbent, and the pressure of moulding press press mold is 1.47 × 10
5n/m
2~ 2.94 × 10
5n/m
2, the pressing mold time is 10s ~ 15s.
2. 3D acoustic(al)absorbent as claimed in claim 1, is characterized in that: the thickness of the first polyester staple fiber layer is 3mm ~ 10mm.
3. 3D acoustic(al)absorbent as claimed in claim 1 or 2, is characterized in that: 3D acoustic(al)absorbent is uncovered rectangular structure.
4. 3D acoustic(al)absorbent as claimed in claim 3, is characterized in that: the length of 3D acoustic(al)absorbent and be widely 600mm ~ 1000mm, is highly 40mm ~ 90mm.
5. 3D acoustic(al)absorbent as claimed in claim 1 or 2, it is characterized in that: in step (c), roller spacing is 20 ~ 50mm.
6. the application of the 3D acoustic(al)absorbent described in Claims 1 to 5 any one, is characterized in that: 3D acoustic(al)absorbent when mounted, and forms cavity structure between body of wall.
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| CN103306390B true CN103306390B (en) | 2015-10-28 |
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| CN111648036A (en) * | 2020-06-05 | 2020-09-11 | 河北传媒学院 | Polyester fiber sound-absorbing body capable of absorbing harmful substances and preparation method thereof |
| CN113954399A (en) * | 2021-09-29 | 2022-01-21 | 江苏佰家丽新材料科技有限公司 | Manufacturing method of sound-absorbing board with negative oxygen ion release function and sound-absorbing board |
| CN114234435A (en) * | 2021-12-14 | 2022-03-25 | 珠海格力新材料有限公司 | Improvement method, system and device for improving performance of soundproof cotton and soundproof cotton |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4851283A (en) * | 1988-12-05 | 1989-07-25 | Monsanto Company | Headliners having improved sound-absorbing characteristics |
| CN1851187A (en) * | 2006-04-29 | 2006-10-25 | 崔南华 | Thermosetting acoustical cotton, and its production method |
| CN101736521A (en) * | 2009-12-22 | 2010-06-16 | 东华大学 | Method for preparing Chinese medicament dreg needling non-woven composite material |
| CN203347040U (en) * | 2013-06-19 | 2013-12-18 | 苏州佰家丽新材料科技有限公司 | 3D sound-absorbing body |
-
2013
- 2013-06-19 CN CN201310242611.2A patent/CN103306390B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4851283A (en) * | 1988-12-05 | 1989-07-25 | Monsanto Company | Headliners having improved sound-absorbing characteristics |
| CN1851187A (en) * | 2006-04-29 | 2006-10-25 | 崔南华 | Thermosetting acoustical cotton, and its production method |
| CN101736521A (en) * | 2009-12-22 | 2010-06-16 | 东华大学 | Method for preparing Chinese medicament dreg needling non-woven composite material |
| CN203347040U (en) * | 2013-06-19 | 2013-12-18 | 苏州佰家丽新材料科技有限公司 | 3D sound-absorbing body |
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