CN104295196A - Door plate core material with flame retardance, sound insulation and heat preservation and preparation method thereof - Google Patents
Door plate core material with flame retardance, sound insulation and heat preservation and preparation method thereof Download PDFInfo
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- CN104295196A CN104295196A CN201310298615.2A CN201310298615A CN104295196A CN 104295196 A CN104295196 A CN 104295196A CN 201310298615 A CN201310298615 A CN 201310298615A CN 104295196 A CN104295196 A CN 104295196A
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Abstract
The invention belongs to the technical field of materials, and relates to a door plate core material and a preparation method thereof. The door plate core material comprises a sound absorption film (3), a support frame (2), an adhesive film (4), a sound-absorption and heat-preservation material (1), an adhesive film (4'), a support frame (2') and a sound absorption film (3') in sequence from top to bottom, wherein the adhesive films (4, 4') coat between the support frame (2, 2') and the sound-absorption and heat-preservation material (1); and all the adjacent layers are connected with each other after being pressurized. The sound insulation mechanism of the sound absorption film structures adopted by the door plate core material with flame retardance, sound insulation and heat preservation is film resonance sound insulation. On the resonant frequency, the sound energy is mostly absorbed due to the acute film vibration; as gaps of the support frames between the sound insulation films and the sound-absorption and heat-preservation material form air layers, the sound transmission is effectively reduced, and the advantages of flame retardance and heat preservation are achieved.
Description
Technical field
The invention belongs to field of material technology, relate to a kind of door-plate core and preparation method thereof.
Background technology
Soundproof door has the place of sound isolation requirement to have a wide range of applications in factory floor, studio, KTV, conference room, cinema etc.Traditional core soundproof door of filling out uses merely the glass staple with suction function or rock wool to be filled in door leaf in-core.But although have certain soundproof effect effect unsatisfactory, and poor thermal insulation property.
Chinese patent CN201593366U discloses a kind of preparation method of structure sound insulation flame retardant door, and its architectural feature take paper honeycombed sheet as sound insulation foundation slab, and sound insulating panel both sides are the soundproof flame-retardant plate of entity.Although effectively can improve soundproof effect, because the cellular board material characteristic of papery restricts, its fire resistance is inevitable significantly to be reduced, and this door does not have heat-insulating property.
Summary of the invention
Object of the present invention be exactly in order to overcome above-mentioned prior art exist defect and a kind of fire-retardant sound insulation thermal preservation door board core material and preparation method thereof is provided.
For achieving the above object, the present invention is by the following technical solutions:
A kind of door-plate core, comprise absorptive membrane, support frame, glued membrane, sound absorption heat insulation material, glued membrane, support frame and absorptive membrane successively from top to bottom, described glued membrane is coated between support frame and sound absorption heat insulation material, by being interconnected after pressurization between neighboring layers.
The thickness of described absorptive membrane is 0.1 ~ 0.3mm.
Described support frame thickness is 1 ~ 3mm.
Described support frame is two-way continuous fiber reinforced polypropylene resin composite materials plate, plate face is evenly distributed with the hole of hollow out, and the gross area of the hole of hollow out accounts for 25% ~ 40% of plate face area.
The hole of described hollow out is area is 3mm
2square aperture.
The thickness of described sound absorption heat insulation material is 20 ~ 40mm.
The thickness of described glued membrane is 0.1 ~ 0.2mm.
Described absorptive membrane is selected from polyethylene fire-retardant film, polypropylene fire retardant film, Polycarbonate flame retardant film or polyvinyl chloride fire-retardant film.
Described sound absorption heat insulation material is selected from melamine acoustical cotton, nitrile rubber/polyvinyl chloride rubber sound insulation cotton or polyurethane sound isolating and flame-retardant sponge; Average sound insulation >=the 20dB of described sound absorption heat insulation material;
Described glued membrane is selected from ECA glue or acrylated epoxy glue.
Described support frame is two-way continuous glass fiber reinforced polypropylene resin composite materials, is made up of the component comprising following weight portion:
Acrylic resin 35 ~ 65 parts,
Continuous fiber 35 ~ 56 parts,
Fire retardant 5 ~ 15 parts,
0.1 ~ 1 part, antioxidant,
Age resister 0.2 ~ 0.8 part.
Described continuous fiber be selected from alkali-free glass fibre, medium-alkali glass fibre or high-performance glass one or more;
Described fire retardant be selected from APP or TDE one or more;
Described antioxidant is the mixture of antioxidant 1010 and irgasfos 168, and wherein antioxidant 1010 and irgasfos 168 are by weight 1:(1 ~ 3) mix.
Described age resister is the mixture of antiager UV326 and HALS770, and wherein antiager UV326 and HALS770 is by weight 1:(1 ~ 3) mixing.
A preparation method for above-mentioned fire-retardant sound insulation thermal preservation door board core material, comprises the following steps:
(1) preparation is used as the two-way continuous glass fiber reinforced polypropylene resin composite materials of support frame material
By said ratio, take each component raw material of following weight portion: acrylic resin 35 ~ 65 parts, fire retardant 5 ~ 15 parts, 0.1 ~ 0.6 part, antioxidant, age resister 0.2 ~ 0.8 part, add in high-speed mixer and fully mix, then compound is added in extruder and extrude film, with the continuous fiber compound of 35 ~ 65 weight portions, after pressing, make continuous glass fiber reinforced polypropylene resin unidirectional prepreg tape;
(2) size of support frame as required, cut out the prepreg tape that step (1) is obtained, transverse and longitudinal is staggered to be routed on mould, send in hot press to move in cold press after hot pressing and cold pressing, obtained two-way continuous fiber reinforced polypropylene resin composite materials plate, then utilizes cutting die to cut equally distributed hole and obtains support frame on plate face;
(3) side of support frame obtained in step (2) is laid in absorptive membrane together with send in hot press to move in cold press after hot pressing and cold pressing, the support frame of obtained composite sound-absorbing film;
(4) side of absorptive membrane and the coating on both sides glued membrane of sound absorption heat insulation material is not had by the support frame of composite sound-absorbing film obtained in two steps (3), according to the order lay of support frame, sound absorption heat insulation material, support frame, be placed in cold press and cold pressing, obtained fire-retardant sound insulation thermal preservation door board core material.
Prepreg tape specification is in described step (1): thickness is 0.15 ~ 0.35mm, and width is 300 ~ 650mm, and length can unrestricted choice as required;
The number of plies that in described step (2), prepreg tape is laid is 4 ~ 16 layers, and the hot pressing temperature of described hot press is 170 ~ 230 DEG C, pressure 0.5 ~ 2MPa, hot pressing time 5 ~ 40min; Described cold press pressure of colding pressing is 1 ~ 4MPa, dwell time 5 ~ 60min.
In described step (3), the hot pressing temperature of hot press is 170 ~ 230 DEG C, pressure 0.5 ~ 2MPa, hot pressing time 1 ~ 5min; Described cold press pressure of colding pressing is 0.5 ~ 2MPa, dwell time 5 ~ 15min;
In described step (4), the pressure of cold press is 0.3 ~ 0.9MPa, dwell time 10min ~ 60min.
Compared to existing technology, the advantage of fire-retardant sound insulation thermal preservation door board core material that the present invention obtains is:
1. the sound insulation mechanism of absorptive membrane structure of the present invention is film resonance sound insulation.On resonance frequency, absorb acoustic energy in a large number due to film high vibration.There is sound deadening sheet and attracting to there is space between heat insulating material due to support frame, forms the propagation that air layer effectively reduces sound.
2. sound absorption heat insulation material of the present invention and absorptive thin film are fire proofing, therefore excellent flame retardancy of the present invention.
3. sound absorption heat insulation material of the present invention all has heat insulation function, and therefore door-plate core all has heat insulation function.
Accompanying drawing explanation
Fig. 1 is the main TV structure schematic diagram of fire-retardant sound insulation thermal preservation door board core material in the embodiment of the present invention.
Fig. 2 is the decomposition texture schematic diagram of fire-retardant sound insulation thermal preservation door board core material in the embodiment of the present invention.
Accompanying drawing mark: 1 be sound absorption heat insulation material,
2,2 ' support frame,
3,3 ' absorptive membrane,
4,4 ' glued membrane.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, the present invention will be further described, and except Special Statement, each component in embodiment is weight portion.
In embodiment, polyethylene fire-retardant film, polypropylene fire retardant film, Polycarbonate flame retardant film or polyvinyl chloride fire-retardant film are commercially available prod.
Embodiment 1
A kind of fire-retardant sound insulation thermal preservation door board core material as depicted in figs. 1 and 2, be followed successively by absorptive membrane 3, support frame 2, glued membrane 4, sound absorption heat insulation material 1, glued membrane 4 ', support frame 2 ', absorptive membrane 3 ' from top to bottom, glued membrane 4,4 ' is coated in support frame 2, between 2 ' and sound absorption heat insulation material 1, by being interconnected after pressurization between neighboring layers.Wherein, absorptive membrane 3,3 ' thickness is 0.1mm, support frame 2, and 2 ' thickness is 3mm, and sound absorption heat insulation material 1 thickness is 30mm, glued membrane 4, and the thickness of 4 ' is 0.1mm.
Absorptive membrane is polyethylene fire-retardant film, and support frame is two-way continuous glass fiber reinforced polypropylene resin composite materials; Sound absorption heat insulation material is melamine acoustical cotton, the average sound insulation >=20dB of sound absorption heat insulation material; Glued membrane is acrylated epoxy glue.
The manufacture method of above-mentioned fire-retardant sound insulation thermal preservation door board core material, comprises the following steps:
(1) preparation is used as support frame (2, 2 ') the two-way continuous glass fiber reinforced polypropylene resin composite materials of material: take acrylic resin 62 parts by weight, TDE 10 parts, 0.3 part of antioxidant 1010 and 0.6 part of irgasfos 168, 0.3 part of antiager UV326 and 0.3 part HALS770, add in high-speed mixer and fully mix, then compound is added in extruder the high-performance continuous glass fibre compound extruding film and 38 weight portions, continuous glass fiber reinforced polypropylene resin unidirectional prepreg tape is made after pressing, the thickness of prepreg tape is 0.3mm, width is 635mm,
(2) size of support frame as required, cut out the prepreg tape that step (1) is obtained, transverse and longitudinal interlocks laying 10 layers on mould, sends into hot pressing in hot press, hot pressing temperature is 190 DEG C, pressure 1MPa, hot pressing time 30min, then move in cold press and cold pressing, machine pressure of colding pressing is 2MPa, dwell time 10min, obtained two-way continuous fiber reinforced polypropylene resin composite materials plate, then utilizes cutting die to cut equally distributed area for 3mm on plate face
2square aperture obtain support frame, wherein hole area accounts for 25% of plate face area;
(3) side of support frame obtained in step (2) is laid in absorptive membrane together with send into hot pressing in hot press, hot pressing temperature is 188 DEG C, pressure 0.5MPa, hot pressing time 2min, then move in cold press and cold pressing, pressure of colding pressing is 0.5MPa, dwell time 5min, the support frame of obtained composite sound-absorbing film;
(4) side of absorptive membrane and the coating on both sides glued membrane of sound absorption heat insulation material is not had by the support frame of composite sound-absorbing film obtained in two steps (3), according to the order lay of support frame, sound absorption heat insulation material, support frame, be placed in cold press and cold pressing, the pressure of cold press is 0.5MPa, dwell time 20min, obtained fire-retardant sound insulation thermal preservation door board core material.
Embodiment 2
A kind of fire-retardant sound insulation thermal preservation door board core material, be followed successively by absorptive membrane 3, support frame 2, glued membrane 4, sound absorption heat insulation material 1, glued membrane 4 ', support frame 2 ', absorptive membrane 3 ' from top to bottom, glued membrane 4,4 ' is coated in support frame 2, between 2 ' and sound absorption heat insulation material 1, by being interconnected after pressurization between neighboring layers.Absorptive membrane 3,3 ' thickness is 0.1mm, support frame 2, and 2 ' thickness is 1mm, and sound absorption heat insulation material 1 thickness is 20mm, glued membrane 4, and the thickness of 4 ' is 0.1mm.
Absorptive membrane is polypropylene fire retardant film; Support frame is two-way continuous glass fiber reinforced polypropylene resin composite materials; Sound absorption heat insulation material is melamine acoustical cotton; Average sound insulation >=the 20dB of sound absorption heat insulation material; Glued membrane is ECA glue.
The manufacture method of above-mentioned fire-retardant sound insulation thermal preservation door board core material, comprises the following steps:
(1) preparation is used as support frame (2, 2 ') the two-way continuous glass fiber reinforced polypropylene resin composite materials of material: take acrylic resin 35 parts by weight, ammonium polyphosphate flame retardant 5 parts, 0.025 part of antioxidant 1010 and 0.075 part of irgasfos 168, 0.05 part of antiager UV326 and 0.15 part HALS770, add in high-speed mixer and fully mix, then compound is added in extruder the continuous alkali-free glass fibre fiber composite extruding film and 35 weight portions, continuous glass fiber reinforced polypropylene resin unidirectional prepreg tape is made after pressing, the thickness of prepreg tape is 0.15mm, width is 300mm,
(2) size of support frame as required, cut out the prepreg tape that step (1) is obtained, transverse and longitudinal interlocks laying 4 layers on mould, sends into hot pressing in hot press, hot pressing temperature is 170 DEG C, pressure 0.5MPa, hot pressing time 40min, then move in cold press and cold pressing, machine pressure of colding pressing is 1MPa, dwell time 60min, obtained two-way continuous fiber reinforced polypropylene resin composite materials plate, then utilizes cutting die to cut equally distributed hole and obtains support frame on plate face; Wherein hole area accounts for 30% of plate face area;
(3) side of support frame obtained in step (2) is laid in absorptive membrane together with send into hot pressing in hot press, hot pressing temperature is 170 DEG C, pressure 0.5MPa, hot pressing time 5min, then move in cold press and cold pressing, pressure of colding pressing is 0.5MPa, dwell time 15min, the support frame of obtained composite sound-absorbing film;
(4) side of absorptive membrane and the coating on both sides glued membrane of sound absorption heat insulation material is not had by the support frame of composite sound-absorbing film obtained in two steps (3), according to the order lay of support frame, sound absorption heat insulation material, support frame, be placed in cold press and cold pressing, the pressure of cold press is 0.3MPa, dwell time 60min, obtained fire-retardant sound insulation thermal preservation door board core material.
Embodiment 3
A kind of fire-retardant sound insulation thermal preservation door board core material, a kind of fire-retardant sound insulation thermal preservation door board core material, be followed successively by absorptive membrane 3, support frame 2, glued membrane 4, sound absorption heat insulation material 1, glued membrane 4 ', support frame 2 ', absorptive membrane 3 ' from top to bottom, glued membrane 4,4 ' is coated in support frame 2, between 2 ' and sound absorption heat insulation material 1, by being interconnected after pressurization between neighboring layers.Absorptive membrane 3,3 ' thickness is 0.2mm, support frame 2, and 2 ' thickness is 2mm, and sound absorption heat insulation material 1 thickness is 30mm, glued membrane 4, and the thickness of 4 ' is 0.15mm.
Absorptive membrane is polypropylene fire retardant film; Support frame is two-way continuous glass fiber reinforced polypropylene resin composite materials; Sound absorption heat insulation material is nitrile rubber/polyvinyl chloride rubber sound insulation cotton; Average sound insulation >=the 20dB of sound absorption heat insulation material; Glued membrane is ECA glue.
The manufacture method of above-mentioned fire-retardant sound insulation thermal preservation door board core material, comprises the following steps:
(1) preparation is used as support frame (2, 2 ') the two-way continuous glass fiber reinforced polypropylene resin composite materials of material: take acrylic resin 40 parts by weight, TDE 12 parts, 0.2 part of antioxidant 1010 and 0.4 part of irgasfos 168, 0.2 part of antiager UV326 and 0.6 part HALS770, add in high-speed mixer and fully mix, then compound is added in extruder and extrude alkali continuous glass fibre compound in film and 35 weight portions, continuous glass fiber reinforced polypropylene resin unidirectional prepreg tape is made after pressing, the thickness of prepreg tape is 0.2mm, width is 450mm,
(2) size of support frame as required, cut out the prepreg tape that step (1) is obtained, transverse and longitudinal interlocks laying 10 layers on mould, send into hot pressing in hot press, hot pressing temperature is 200 DEG C, pressure 1.5MPa, hot pressing time 25min, then move in cold press and cold pressing, machine pressure of colding pressing is 2.5MPa, dwell time 35min, obtained two-way continuous fiber reinforced polypropylene resin composite materials plate, then on plate face, utilize cutting die to cut equally distributed hole obtain support frame, wherein hole area accounts for 35% of plate face area;
(3) side of support frame obtained in step (2) is laid in absorptive membrane together with send into hot pressing in hot press, hot pressing temperature is 200 DEG C, pressure 1.5MPa, hot pressing time 3min, then move in cold press and cold pressing, pressure of colding pressing is 1.2MPa, dwell time 10min, the support frame of obtained composite sound-absorbing film;
(4) side of absorptive membrane and the coating on both sides glued membrane of sound absorption heat insulation material is not had by the support frame of composite sound-absorbing film obtained in two steps (3), according to the order lay of support frame, sound absorption heat insulation material, support frame, be placed in cold press and cold pressing, the pressure of cold press is 0.6MPa, dwell time 40min, obtained fire-retardant sound insulation thermal preservation door board core material.
Embodiment 4
A kind of fire-retardant sound insulation thermal preservation door board core material, a kind of fire-retardant sound insulation thermal preservation door board core material, be followed successively by absorptive membrane 3, support frame 2, glued membrane 4, sound absorption heat insulation material 1, glued membrane 4 ', support frame 2 ', absorptive membrane 3 ' from top to bottom, glued membrane 4,4 ' is coated in support frame 2, between 2 ' and sound absorption heat insulation material 1, by being interconnected after pressurization between neighboring layers.Absorptive membrane 3,3 ' thickness is 0.3mm, support frame 2, and 2 ' thickness is 3mm, and sound absorption heat insulation material 1 thickness is 40mm, glued membrane 4, and the thickness of 4 ' is 0.2mm.
Absorptive membrane is polyvinyl chloride fire-retardant film; Support frame is two-way continuous glass fiber reinforced polypropylene resin composite materials; Sound absorption heat insulation material is polyurethane sound isolating and flame-retardant sponge; Average sound insulation >=the 20dB of sound absorption heat insulation material; Described glued membrane is acrylated epoxy glue.
Antioxidant is that antioxidant 1010 and irgasfos 168 are by weight 1:(1 ~ 3) mixture that mixes; Age resister is antiager UV326 and HALS770 by weight 1:(1 ~ 3) mixture that mixes.
The manufacture method of above-mentioned fire-retardant sound insulation thermal preservation door board core material, comprises the following steps:
(1) preparation is used as support frame (2, 2 ') the two-way continuous glass fiber reinforced polypropylene resin composite materials of material: take acrylic resin 65 parts by weight, TDE 15 parts, 0.3 part of antioxidant 1010 and 0.3 part of irgasfos 168, 0.4 part of antiager UV326 and 0.4 part HALS770, add in high-speed mixer and fully mix, then compound is added in extruder and extrude alkali continuous glass fibre fiber composite in film and 56 weight portions, continuous glass fiber reinforced polypropylene resin unidirectional prepreg tape is made after pressing, the thickness of prepreg tape is 0.35mm, width is 650mm,
(2) size of support frame as required, cut out the prepreg tape that step (1) is obtained, transverse and longitudinal interlocks laying 16 layers on mould, send into hot pressing in hot press, hot pressing temperature is 230 DEG C, pressure 2MPa, hot pressing time 5min, then move in cold press and cold pressing, machine pressure of colding pressing is 4MPa, dwell time 5min, obtained two-way continuous fiber reinforced polypropylene resin composite materials plate, then on plate face, utilize cutting die to cut equally distributed hole obtain support frame, wherein hole area accounts for 40% of plate face area;
(3) side of support frame obtained in step (2) is laid in absorptive membrane together with send into hot pressing in hot press, hot pressing temperature is 230 DEG C, pressure 2MPa, hot pressing time 1min, then move in cold press and cold pressing, pressure of colding pressing is 2MPa, dwell time 5min, the support frame of obtained composite sound-absorbing film;
(4) side of absorptive membrane and the coating on both sides glued membrane of sound absorption heat insulation material is not had by the support frame of composite sound-absorbing film obtained in two steps (3), according to the order lay of support frame, sound absorption heat insulation material, support frame, be placed in cold press and cold pressing, the pressure of cold press is 0.9MPa, dwell time 10min, obtained fire-retardant sound insulation thermal preservation door board core material.
Carry out performance test to product obtained in embodiment, test result is as following table 1:
Table 1
Above-mentioned is can understand and apply the invention for ease of those skilled in the art to the description of embodiment.Person skilled in the art obviously easily can make various amendment to these embodiments, and General Principle described herein is applied in other embodiments and need not through performing creative labour.Therefore, the invention is not restricted to embodiment here, those skilled in the art, according to announcement of the present invention, do not depart from improvement that scope makes and amendment all should within protection scope of the present invention.
Claims (10)
1. a door-plate core, it is characterized in that: comprise absorptive membrane (3), support frame (2), glued membrane (4), sound absorption heat insulation material (1), glued membrane (4 '), support frame (2 ') and absorptive membrane (3 ') from top to bottom successively, described glued membrane (4,4 ') support frame (2 is coated in, 2 ') and between sound absorption heat insulation material (1), by being interconnected after pressurization between neighboring layers.
2. door-plate core according to claim 1, is characterized in that: the thickness of described absorptive membrane (3,3 ') is 0.1 ~ 0.3mm;
Or described support frame (2,2 ') thickness is 1 ~ 3mm.
3. door-plate core according to claim 1, it is characterized in that: described support frame is two-way continuous fiber reinforced polypropylene resin composite materials plate, plate face is evenly distributed with the hole of hollow out, the gross area of the hole of hollow out accounts for 25% ~ 40% of plate face area.
4. door-plate core according to claim 1, is characterized in that: the thickness of described sound absorption heat insulation material (1) is 20 ~ 40mm;
Or the thickness of described glued membrane (4,4 ') is 0.1 ~ 0.2mm.
5. door-plate core according to claim 1, is characterized in that: described absorptive membrane (3,3 ') is selected from polyethylene fire-retardant film, polypropylene fire retardant film, Polycarbonate flame retardant film or polyvinyl chloride fire-retardant film;
Or described sound absorption heat insulation material (1) is selected from melamine acoustical cotton, nitrile rubber/polyvinyl chloride rubber sound insulation cotton or polyurethane sound isolating and flame-retardant sponge; Average sound insulation >=the 20dB of described sound absorption heat insulation material;
Or described glued membrane (4,4 ') is selected from ECA glue or acrylated epoxy glue.
6. door-plate core according to claim 1, is characterized in that: described support frame (2,2 ') is two-way continuous glass fiber reinforced polypropylene resin composite materials, is made up of the component comprising following weight portion:
Acrylic resin 35 ~ 65 parts,
Continuous fiber 35 ~ 56 parts,
Fire retardant 5 ~ 15 parts,
0.1 ~ 1 part, antioxidant,
Age resister 0.2 ~ 0.8 part.
7. door-plate core according to claim 6, is characterized in that: described continuous fiber be selected from alkali-free glass fibre, medium-alkali glass fibre or high-performance glass one or more;
Or described fire retardant is selected from one or more in APP or TDE;
Or described antioxidant is the mixture of antioxidant 1010 and irgasfos 168, wherein antioxidant 1010 and irgasfos 168 are by weight 1:(1 ~ 3) mix;
Or described age resister is the mixture of antiager UV326 and HALS770, wherein antiager UV326 and HALS770 is by weight 1:(1 ~ 3) mixing.
8. the preparation method of arbitrary described door-plate core in claim 1-7, is characterized in that: comprise the following steps:
(1) preparation is used as the two-way continuous glass fiber reinforced polypropylene resin composite materials of support frame (2,2 ') material
By proportioning according to claim 6, take each component raw material of following weight portion: acrylic resin 35 ~ 65 parts, fire retardant 5 ~ 15 parts, 0.1 ~ 0.6 part, antioxidant, age resister 0.2 ~ 0.8 part, add in high-speed mixer and fully mix, then compound is added in extruder and extrude film, with the continuous fiber compound of 35 ~ 65 weight portions, after pressing, make continuous glass fiber reinforced polypropylene resin unidirectional prepreg tape;
(2) size of support frame as required, cut out the prepreg tape that step (1) is obtained, transverse and longitudinal is staggered to be routed on mould, send in hot press to move in cold press after hot pressing and cold pressing, obtained two-way continuous fiber reinforced polypropylene resin composite materials plate, then utilizes cutting die to cut equally distributed hole and obtains support frame on plate face;
(3) side of support frame obtained in step (2) is laid in absorptive membrane together with send in hot press to move in cold press after hot pressing and cold pressing, the support frame of obtained composite sound-absorbing film;
(4) side of absorptive membrane and the coating on both sides glued membrane of sound absorption heat insulation material is not had by the support frame of composite sound-absorbing film obtained in two steps (3), according to the order lay of support frame, sound absorption heat insulation material, support frame, be placed in cold press and cold pressing, obtained door-plate core.
9. preparation method according to claim 8, is characterized in that: in described step (1), prepreg tape specification is: thickness is 0.15 ~ 0.35mm, and width is 300 ~ 650mm;
Or the number of plies that in described step (2), prepreg tape is laid is 4 ~ 16 layers, the hot pressing temperature of described hot press is 170 ~ 230 DEG C, pressure 0.5 ~ 2MPa, hot pressing time 5 ~ 40min; Described cold press pressure of colding pressing is 1 ~ 4MPa, dwell time 5 ~ 60min.
10. preparation method according to claim 8, is characterized in that: in described step (3), the hot pressing temperature of hot press is 170 ~ 230 DEG C, pressure 0.5 ~ 2MPa, hot pressing time 1 ~ 5min; Described cold press pressure of colding pressing is 0.5 ~ 2MPa, dwell time 5 ~ 15min;
Or the pressure of cold press is 0.3 ~ 0.9MPa in described step (4), dwell time 10min ~ 60min.
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| CN105239365A (en) * | 2015-09-24 | 2016-01-13 | 安庆市花蕾纺织材料有限公司 | Nanometer silver/polyurethane/polypropylene elastic composite sound-absorbing cotton and preparation method thereof |
| CN105239359A (en) * | 2015-09-24 | 2016-01-13 | 安庆市花蕾纺织材料有限公司 | Flame-retardant antibacterial elastic composite sound absorbing cotton, and preparation method thereof |
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| CN104961426A (en) * | 2015-06-10 | 2015-10-07 | 安徽安旺门业有限公司 | Fireproof door core |
| CN105239365A (en) * | 2015-09-24 | 2016-01-13 | 安庆市花蕾纺织材料有限公司 | Nanometer silver/polyurethane/polypropylene elastic composite sound-absorbing cotton and preparation method thereof |
| CN105239359A (en) * | 2015-09-24 | 2016-01-13 | 安庆市花蕾纺织材料有限公司 | Flame-retardant antibacterial elastic composite sound absorbing cotton, and preparation method thereof |
| CN105239200A (en) * | 2015-09-24 | 2016-01-13 | 安庆市花蕾纺织材料有限公司 | Polytetrafluoroethylene/polyurethane/polypropylene elastic composite sound-absorbing cotton and preparation method thereof |
| CN105244017A (en) * | 2015-11-19 | 2016-01-13 | 滨州市鸿泰顺意工贸有限公司 | Sound-absorbing cotton making process |
| CN107948775A (en) * | 2017-12-25 | 2018-04-20 | 广州市尊浪电器有限公司 | A kind of speaker flame-retardant composite board |
| CN108093343A (en) * | 2017-12-25 | 2018-05-29 | 广州市尊浪电器有限公司 | A kind of fire-retardant speaker |
| CN108678275A (en) * | 2018-04-04 | 2018-10-19 | 东南大学 | A kind of preparation method of the integrated prefabricated wallboard of cross laminate |
| CN111058325A (en) * | 2019-11-15 | 2020-04-24 | 重庆双羽家俱有限公司 | Light composite wood door plate and preparation method thereof |
| CN111755723A (en) * | 2020-06-01 | 2020-10-09 | 无锡先导智能装备股份有限公司 | Device for preparing membrane electrode frame of fuel cell |
| CN111755723B (en) * | 2020-06-01 | 2023-02-17 | 江苏氢导智能装备有限公司 | Device for preparing membrane electrode frame of fuel cell |
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