CN107891639A - A kind of high sound-absorbing polyurethane automobile ceiling of high intensity and preparation method thereof - Google Patents
A kind of high sound-absorbing polyurethane automobile ceiling of high intensity and preparation method thereof Download PDFInfo
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- CN107891639A CN107891639A CN201711077116.5A CN201711077116A CN107891639A CN 107891639 A CN107891639 A CN 107891639A CN 201711077116 A CN201711077116 A CN 201711077116A CN 107891639 A CN107891639 A CN 107891639A
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- glue
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- ceiling
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/40—Layered products comprising a layer of synthetic resin comprising polyurethanes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/0038—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding involving application of liquid to the layers prior to lamination, e.g. wet laminating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
- B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
- B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
- B60R13/02—Internal Trim mouldings ; Internal Ledges; Wall liners for passenger compartments; Roof liners
- B60R13/0212—Roof or head liners
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2255/00—Coating on the layer surface
- B32B2255/02—Coating on the layer surface on fibrous or filamentary layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/10—Inorganic fibres
- B32B2262/101—Glass fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/10—Properties of the layers or laminate having particular acoustical properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/724—Permeability to gases, adsorption
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2605/00—Vehicles
- B32B2605/08—Cars
Abstract
The invention discloses high sound absorption qualities automotive interior roof of a kind of high intensity and preparation method thereof, it is characterized in, it is by backing layer nonwoven layer（70）, the 3rd glue glass layer（60）, the 2nd PU layers（50）, the second glue glass layer（40）, the first PU layers（30）, the first glue glass layer（20）, topcoat（10）Molding is combined；The density of first PU layers is more than the density of the 2nd PU layers；Preparation method is that glue glass layer, hot-die shaping manufacture automotive interior roof is made in glass mat polyurethane coating glue；The PU layers of different densities can absorb the noise of different frequency range, enhance absorbing sound and lowering noise function, and the product has good intensity and good sound absorption qualities.
Description
Technical field：
The present invention relates to roof of the vehicle technical field, the high sound-absorbing polyurethane automobile ceiling of specifically a kind of high intensity and its system
Preparation Method；For high-end vehicle ceiling, be a kind of high intensity, high sound-absorbing, glass mat gluing substitute traditional PU layers gluing,
The roof of the vehicle that double-deck PU layers synchronously use.
Background technology：
The preparation method of conventional polyurethanes roof of the vehicle is PU layer plastic rolls at present, the opening shape of PU foam insides and cellular
Structure serves good sound absorption, but porous material is poor to lower frequency sounds acoustically effective, i.e., being absorbed sound in low frequency range is
Number is smaller.In the Patents announced at present, the manufacture craft of the high sound-absorbing polyurethane ceiling of high intensity has following three class：
Dry process：Patents have the B of Chinese patent CN 103101256, and the technique being related to is Rigid foam polyurethane by under
The bottom fabric that is overlapped successively on and, glued membrane fiber type felt, PU bubbles plate, glued membrane fiber type felt and netted hot melt adhesive film it is compound and
Into, for glued membrane fiber type felt using reinforcing fiber as center core layer, upper and lower surface is compounded with the netted hot melt adhesive film of different grammes per square metres respectively, but
This method belongs to dry process, and needs to prepare special glued membrane fiber type felt in advance, the long ceiling processing work of technological process
Skill narrow range.
Double PU layer process：Patents have the U of Chinese patent CN 205272708, and the preparation method being related to is first by nonwoven
Layer of cloth 1 sprays liquid rubber and sprinkles glass, and epoxy glue is sprayed on PU plates 1 and uniformly spreads ox-hide, is sprayed on PU plates 25
Epoxy glue simultaneously sprinkles glass, and then nonwoven layer 1, PU plates 1 and PU plates 25 are stacked with interior finish coat 7 and is hot pressed into
Type, last water are cut into the ceiling of high sound absorption properties, due to having used double PU layers of different densities, add ceiling to different frequency range
Sound-absorbing effect, enhance absorbing sound and lowering noise function；But because the smell of epoxy glue is larger, influence the smell and VOC of ceiling
Can, and epoxy glue is sprayed in production process can be atomized volatilization and cut and spread glass dust problem etc. and cause production environment severe.
Glass plastic roll technique：Patents have the B of Chinese patent CN 102795086, and the preparation method being related to is to select PU
Foam is top matrix, plastic roll, sprinkling pure water is carried out respectively to upper and lower glass fibre, then according to knitting fabric, upper strata glass
Glass fiber, PU foams, lower floor's glass fibre, non-ventilating tunic, non-woven fabrics stone successively, are pressed, this method is
Glass mat plastic roll, realizes lightweight and improves blocking of the conventional PU layers plastic roll to PU abscesses and be advantageous to polyurethane ceiling
Sound-absorbing effect；But because ceiling backing layer has used non-ventilating tunic, non-ventilating tunic intermediate layer is polyamide, polyamide
Film layers that 220 DEG C or so of fusing point can remain intact under the conditions of the use of technological temperature being 130 DEG C, and film sound absorption structure is total to
Vibration frequency is about 0.3-0.4 generally in 200-1000Hz scopes, maximum acoustic absorptivity, the use of non-ventilating tunic, can weaken PU
Absorption of the layer to high band noise, causes the sound absorption qualities of final ceiling still not ideal enough, can not meet client to full frequency band
The requirement of high sound absorption qualities.
In the prior art, the high-strength high sound-absorbing of ceiling mainly increases PU thickness degree and increases rolling trial of strength, but PU layers
The space that plastic roll easily blocks PU foams reduces its sound absorption qualities；PU layer plastic rolls, required glue amount is excessive, and cost is too high.
The content of the invention：
The purpose of the present invention is to overcome the shortcomings of above-mentioned prior art, so as to provide a kind of high intensity high sound-absorbing polyurethane automobile top
Canopy.
It is a further object of the present invention to provide a kind of preparation method of the high sound-absorbing polyurethane automobile ceiling of high intensity.
Present invention mainly solves the high sound-absorbing polyurethane automobile ceiling of existing high intensity its low sound absorption qualities are poor and cost
The problem of high.
The technical scheme is that：A kind of high sound-absorbing polyurethane automobile ceiling of high intensity, it is characterized in that, under
According to this by backing layer nonwoven layer, the 3rd glue glass layer, the 2nd PU layers, the second glue glass layer, the first PU layers, the first glue glass layer, face on and
Decorations layer is combined；Described the first glue glass layer, the second glue glass layer, the 3rd glue glass layer are to coat different grammes per square metres by glass mat
Glue be process；Described first layer PU layers density is more than the 2nd PU layer density.
Further, described adhesive is that environment friendly wet solidifies polyurethane adhesive.
A kind of preparation method of the high sound-absorbing polyurethane automobile ceiling of high intensity of the present invention, it is characterized in that, including
Following processing step：
A plastic rolls：Take glass mat to carry out glue spreader plastic roll and the first glue glass layer, the second glue glass layer and the 3rd glue glass layer, glue is made
15-45 DEG C of roll temperature, rubber roll height 1-3mm, the plastic roll amount of every layer of glue glass layer are：First layer glue glass layer 17-23g/m2, the second layer
Glue glass layer 25-30 g/m2, third layer glue glass layer 30-35g/m2；
B sprays softened water：PU layers are taken, pure water, the watering amount 20-30 of one side are sprayed using double-faced uniform of the water sprayer in PU layers
g/m2；
C stones：According to topcoat from top to down, the first glue glass layer, the first PU layers, the second glue glass layer, the 2nd PU layers, the 3rd glue glass
Layer, the neat stone of backing layer non-woven fabrics order；
D is compressing：The material that stone is completed is placed in mould, ceiling just type, mold temperature 100- are obtained after compressing
140 DEG C, briquetting pressure 8-9MPa, it is molded dwell time 30-45S；
E cooling and shapings：Type at the beginning of ceiling after will be compressing is placed in cooling and shaping in shaper, shaping time 30-45S；
F robots high pressure waterjet：Type at the beginning of ceiling after cooling and shaping is put into cutting die, high pressure waterjet is carried out, cuts away side
Ceiling is made after corner material；Cutting pressure 2500-3500Pa；
G examines storage：Through examining qualified ceiling, vanning storage.
Further, described glass mat is wet method felt, grammes per square metre 80-150g/m2。
High sound-absorbing polyurethane automobile ceiling of a kind of high intensity of the present invention and preparation method thereof, compared with the prior art
With prominent substantive distinguishing features and marked improvement, 1, glass mat plastic roll substitute traditional PU layer plastic rolls, reduce poly- ammonia
Ester adhesive improves the gas permeability and sound absorption qualities of product to the closure probability in PU porous materials space；2nd, different densities are double-deck
The use of PU layers, the noise of different frequency range can be absorbed, enhance absorption of the PU porous materials to full frequency band noise, enhance top
The intensity and absorbing sound and lowering noise performance of canopy；3rd, there is no harmful substance generation, Environmental Safety in whole production process；4th, it is straight with topcoat
The glue amount of the first layer glue glass layer of contact is 17-23g/m2, trial of strength is rolled far below traditional PU layers, reduces the seep throughs such as facial ornament
Bad risk, improve the accepted product percentage of production process.
Brief description of the drawings：
Fig. 1 is the structural representation of the present invention.
Embodiment：
Embodiment 1, for a better understanding and implementation, providing specific embodiment below in conjunction with the accompanying drawings describes the present invention in detail；Institute
It is only used for explaining the present invention for embodiment, is not intended to limit the scope of the present invention.
Embodiment 1, referring to Fig. 1, the high sound-absorbing polyurethane automobile ceiling of high intensity is prepared using following technique：
（1）Plastic roll：Take glass mat to carry out glue spreader plastic roll and glue glass layer is made, glass mat is wet method felt, and grammes per square metre is
80g/m2；40 DEG C of rubber roll temperature, rubber roll height 1.5mm, the plastic roll amount of every layer of glue glass layer are：First layer 17-23g/m2, the second layer
25-30 g/m2, third layer 30-35g/m2；Glue is that environment friendly wet solidifies polyurethane adhesive；
（2）Spray softened water：PU layers are taken, pure water, the watering amount 20- of one side are sprayed using double-faced uniform of the water sprayer in PU layers
30 g/m2；
（3）Stone：According to from bottom to top successively lay backing layer nonwoven layer（70）, the 3rd glue glass layer（60）, the 2nd PU layers（50）、
Second glue glass layer（40）, the first PU layers（30）, the first glue glass layer（20）, topcoat（10）；First PU layers（30）Density：32±
3Kg/m3, the 2nd PU layers（50）Density：26±3Kg/m3；
（4）It is compressing：The material laid is placed in mould, ceiling just type, mold temperature 110 are obtained after compressing
DEG C, briquetting pressure 9MPa, it is molded dwell time 35s；
（5）Cooling and shaping：Type at the beginning of ceiling after will be compressing is placed in cooling and shaping in mould, shaping time 35s；
（6）Robot high pressure waterjet：Type at the beginning of ceiling after cooling and shaping is put into cutting die, according to the cutting process of regulation
High pressure waterjet is carried out, the high sound-absorbing polyurethane automobile ceiling of high intensity is made after cutting away leftover pieces；Cutting pressure 3000Pa；
（7）Examine storage：Through examining qualified ceiling, vanning storage.
Embodiment 2, with embodiment 1, the rubber roll temperature for being a difference in that plastic roll step is 15 DEG C, and rubber roll is highly 1mm；Pressure
The mold temperature of forming step processed is 100 DEG C, and briquetting pressure is 9 MPa, is molded dwell time 45s；Cooling and shaping step is determined
The type time is 30s；The cutting pressure of robot water knife cutting step is 2500 Pa.
Embodiment 3, with embodiment 1, the rubber roll temperature for being a difference in that plastic roll step is 45 DEG C, and rubber roll is highly 3mm；Pressure
The mold temperature of forming step processed is 140 DEG C, and briquetting pressure is 8 MPa, is molded dwell time 30s；Cooling and shaping step is determined
The type time is 45s；The cutting pressure of robot water knife cutting step is 3500 Pa.
A kind of high sound-absorbing polyurethane automobile ceiling of high intensity and preparation method of the present invention, glue glass layer is by glass mat
The environment friendly wet solidification polyurethane adhesive for coating different grammes per square metres forms, and first layer PU layers density is more than the 2nd PU layer density, different close
Degree can absorb the noise of different frequency range, effectively strengthen the absorbing sound and lowering noise effect of ceiling.
Claims (4)
1. a kind of high sound-absorbing polyurethane automobile ceiling of high intensity, it is characterised in that from below to up according to this by backing layer nonwoven layer
（70）, the 3rd glue glass layer（60）, the 2nd PU layers（50）, the second glue glass layer（40）, the first PU layers（30）, the first glue glass layer（20）、
Topcoat（10）It is combined；The first described glue glass layer（20）, the second glue glass layer（40）, the 3rd glue glass layer（60）It is by glass
The glue that fibrofelt coats different grammes per square metres is process；Described first layer PU layers（30）Density is more than the 2nd PU layers（50）Density.
2. the high sound-absorbing polyurethane automobile ceiling of a kind of high intensity according to claim 1, it is characterised in that described glue is
Environment friendly wet solidifies polyurethane adhesive.
3. right will show the preparation method for seeking a kind of high sound-absorbing polyurethane automobile ceiling of high intensity described in 1 or 2, its feature exists
In comprising the technical steps that：
A plastic rolls：Take glass mat to carry out glue spreader plastic roll and the first glue glass layer, the second glue glass layer and the 3rd glue glass layer, glue is made
15-45 DEG C of roll temperature, rubber roll height 1-3mm, the plastic roll amount of every layer of glue glass layer are：First layer glue glass layer 17-23g/m2, the second layer
Glue glass layer 25-30 g/m2, third layer glue glass layer 30-35g/m2；
B sprays softened water：PU layers are taken, pure water, the watering amount 20-30 of one side are sprayed using double-faced uniform of the water sprayer in PU layers
g/m2；
C stones：According to topcoat from top to down, the first glue glass layer, the first PU layers, the second glue glass layer, the 2nd PU layers, the 3rd glue glass
Layer, the neat stone of backing layer non-woven fabrics order；
D is compressing：The material that stone is completed is placed in mould, ceiling just type, mold temperature 100- are obtained after compressing
140 DEG C, briquetting pressure 8-9MPa, it is molded dwell time 30-45S；
E cooling and shapings：Type at the beginning of ceiling after will be compressing is placed in cooling and shaping in shaper, shaping time 30-45S；
F robots high pressure waterjet：Type at the beginning of ceiling after cooling and shaping is put into cutting die, high pressure waterjet is carried out, cuts away side
Ceiling is made after corner material；Cutting pressure 2500-3500Pa；
G examines storage：Through examining qualified ceiling, vanning storage.
4. right will show the preparation method for seeking a kind of high sound-absorbing polyurethane automobile ceiling of high intensity described in 3, it is characterised in that a
Glass mat described in step is wet method felt, grammes per square metre 80-150g/m2。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711077116.5A CN107891639A (en) | 2017-11-06 | 2017-11-06 | A kind of high sound-absorbing polyurethane automobile ceiling of high intensity and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711077116.5A CN107891639A (en) | 2017-11-06 | 2017-11-06 | A kind of high sound-absorbing polyurethane automobile ceiling of high intensity and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107891639A true CN107891639A (en) | 2018-04-10 |
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ID=61804081
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711077116.5A Pending CN107891639A (en) | 2017-11-06 | 2017-11-06 | A kind of high sound-absorbing polyurethane automobile ceiling of high intensity and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113523592A (en) * | 2021-06-29 | 2021-10-22 | 无锡吉兴汽车声学部件科技有限公司 | Laser cutting process for automobile roof microphone hole |
| EP4169717A1 (en) * | 2021-10-25 | 2023-04-26 | NVH Korea, Inc. | Method of manufacturing headlining using moisture-curing adhesive and headlining manufactured thereby |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102381256A (en) * | 2011-09-10 | 2012-03-21 | 无锡吉兴汽车声学部件科技有限公司 | Wet-method roof producing process by glass fibers spread with adhesive |
| CN103434251A (en) * | 2013-08-09 | 2013-12-11 | 无锡吉兴汽车声学部件科技有限公司 | One-step forming process for roof by wet method |
| CN103481751A (en) * | 2013-08-22 | 2014-01-01 | 烟台正海汽车内饰件有限公司 | High-strength PU (polyurethane) skylight pulling plate with sandwich structure and preparation method thereof |
| CN205272708U (en) * | 2015-12-30 | 2016-06-01 | 长安马自达汽车有限公司 | Ceiling of sound nature is inhaled to height |
-
2017
- 2017-11-06 CN CN201711077116.5A patent/CN107891639A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102381256A (en) * | 2011-09-10 | 2012-03-21 | 无锡吉兴汽车声学部件科技有限公司 | Wet-method roof producing process by glass fibers spread with adhesive |
| CN103434251A (en) * | 2013-08-09 | 2013-12-11 | 无锡吉兴汽车声学部件科技有限公司 | One-step forming process for roof by wet method |
| CN103481751A (en) * | 2013-08-22 | 2014-01-01 | 烟台正海汽车内饰件有限公司 | High-strength PU (polyurethane) skylight pulling plate with sandwich structure and preparation method thereof |
| CN205272708U (en) * | 2015-12-30 | 2016-06-01 | 长安马自达汽车有限公司 | Ceiling of sound nature is inhaled to height |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113523592A (en) * | 2021-06-29 | 2021-10-22 | 无锡吉兴汽车声学部件科技有限公司 | Laser cutting process for automobile roof microphone hole |
| EP4169717A1 (en) * | 2021-10-25 | 2023-04-26 | NVH Korea, Inc. | Method of manufacturing headlining using moisture-curing adhesive and headlining manufactured thereby |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180410 |