CN104260381A - Production process of weather resistant film for large aircraft inner wall sealing bag - Google Patents
Production process of weather resistant film for large aircraft inner wall sealing bag Download PDFInfo
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- CN104260381A CN104260381A CN201410382880.3A CN201410382880A CN104260381A CN 104260381 A CN104260381 A CN 104260381A CN 201410382880 A CN201410382880 A CN 201410382880A CN 104260381 A CN104260381 A CN 104260381A
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Abstract
The invention discloses a production process of a weather resistant film for a large aircraft inner wall sealing bag. The production process comprises the following steps: polyurethane resins, a cross-linking agent, catalyst, a surface active agent, butanone and toluene are fed in a mixing groove, and are stirred under the condition of rotating speed of 400-600 r/m; when the temperature of liquid rises 30-40 DEG C, the stirring is stopped, and ultrasonic sealing polyurethane adhesive is obtained through the filtering treatment; the ultrasonic sealing polyurethane adhesive is coated on a polyimide film; the polyimide film carried with the ultrasonic sealing polyurethane adhesive and a reinforced fiber net is put in an oven, and the reinforced fiber net is fixed on the polyimide film; and a ultrasonic sealing film is pressed under the conditions of a temperature of 135-155 DEG C and a pressure of 35-41 Kpa by a ultrasonic joint sealing machine. The film, obtained by the production process, has no need to add any solvent in use, so that the production efficiency is high; and the ultrasonic sealing operation process is simple, so that the film has stronger permeability and affinity in use.
Description
Technical field
The present invention relates to a kind of manufacturing process of sealing bag film, particularly a kind of manufacturing process of large aircraft inner wall sealing bag weatherability film.
Background technology
The charge flyer miles number of whole world commercial aircraft industry driving force will increase about 5% every year, and this is the twice of whole global economy predicted growth rate.Also the new the highest of accumulative 4000 framves is reached at the order of 2006 and commercial aircraft in 2007.Nowadays, large commercial aircraft overstocks the order that 36% of order total amount is Asian Aviation company.In fact, China is the biggest market of the new commercial aircraft of Boeing Co. and European Airbus SAS at present.Recently, the inspirer prediction of another one is that the aircraft order amount of money is estimated to reach 3.2 trillion dollars.
Large-scale passenger airplane casing inner wall has all installed a kind of material of heat insulating, sound isolating and flame-retardant insulation in aircraft inner wall sealing bag, it is installed between aircraft passenger compartment internal decking sheet and body covering, and it rushes glass mat be prepared from through ultrasonic sealing by filling out inside Kapton bag.Select this material, be because it does not fire, molten, odorlessness, does not make propagation of flame, and still can keep soft in extreme temperatures and can use.In addition, this Kapton and glass mat meet the regulation of U.S. government about the refractory insulating material used in the fuselage of large aircraft.Prepare this Kapton bag and have employed special technique, film has reinforcement fibre line structure, therefore improves resistance to tearing and combination property.Meanwhile, film is also coated with can the glue of ultrasonic sealing, conveniently makes sealing bag.The poly-Kapton selected can at 240 DEG C Long-Time Service, short-period used at 400 DEG C.But still there is following technical problem: permeability and affinity weak, bonding strength is low, easily produces creep and embrittlement by variation of ambient temperature, and how overcoming above-mentioned technical problem becomes the direction that those skilled in the art make great efforts.
Summary of the invention
The invention provides a kind of manufacturing process of large aircraft inner wall sealing bag weatherability film, the film that this manufacturing process obtains does not need to add any solvent in use, production efficiency is high, simple through ultrasonic hot composition operation technique during use, has extremely strong permeability and affinity.
For achieving the above object, the technical solution used in the present invention is: a kind of manufacturing process of large aircraft inner wall sealing bag weatherability film, is characterized in that: comprise the following steps:
By 28 parts of polyurethane resin Bostick, 7412,30 parts of polyurethane resin Bostick, 7415,2 parts of crosslinking agent B oscodur, 21,2.5 parts of catalyst Metacue T-12,1.5 parts of surfactant Surfactant G125,15 parts of butanone, 17 parts of toluene, drop in mixing container, start variable-speed agitator, stir 2 ~ 3 hours continuously under the speed conditions of 400 ~ 600 revs/min;
In stirring, fluid temperature is elevated to 30 ~ 40 DEG C, and creating pockets of air, then stop stirring, obtain ultrasonic sealing polyurethane adhesive through filtration treatment;
Be arranged on by Kapton on film substrate let off roll, Kapton pulls out from film substrate let off roll by the first power traction rail;
Cast coat machine, by described ultrasonic sealing polyurethane adhesive, flows in the hopper of coating coating head of cast coat machine through charging pump, and is coated on Kapton;
Be arranged on the fortifying fibre net of fortifying fibre net let off roll, fall down on the Kapton dropping on and have ultrasonic sealing polyurethane adhesive by self weight, and be fitted on film after being soaked by ultrasonic sealing polyurethane adhesive;
The Kapton being loaded with described ultrasonic sealing polyurethane adhesive and fortifying fibre net enters baking oven, this ultrasonic sealing polyurethane adhesive carries out chemical reaction under heating and reaches precuring, changes from liquid into solid and is fixed on Kapton by fortifying fibre net;
Described ultrasonic sealing film carries out pressing in 135 ~ 155 DEG C of temperature, 35 ~ 41 Kpa pressure, charging rate under being the condition of 10 ~ 13 cm per minute through ultrasonic seam sealer.
In technique scheme, further improved plan is as follows:
1, in such scheme, the solid content of described ultrasonic sealing polyurethane adhesive is 30%, and viscosity is 500 cps.
2, in such scheme, the coating weight of described ultrasonic sealing polyurethane adhesive is 8 ~ 15 grams/m; 0.011 ~ 0.02 ounce/cubic zhang of described fortifying fibre net.
3, in such scheme, described ultrasonic sealing polyurethane adhesive is 30 ~ 35 ms/min at Kapton surface coating speed.
4, in such scheme, described oven temperature is 80 ~ 110 DEG C, is distributed in precuring under each section of baking oven 80-80-100-110-110-100-80 DEG C condition according to gradient.
Because technique scheme is used, the present invention compared with prior art has following advantages and effect:
The manufacturing process of large aircraft inner wall sealing bag weatherability film of the present invention, is coated on Kapton by ultrasonic sealing polyurethane adhesive, and when being coated with, the crucial extent of reaction that suitably will control coating, forms prepolymer.Meanwhile, also will by fortifying fibre net with coating together with Film laminated; The heat-sealing film that manufacturing process of the present invention obtains carries out pressing in 135 ~ 155 DEG C of temperature, 35 ~ 41Kpa pressure, charging rate under being the condition of 10 ~ 13 cm per minute through ultrasonic seam sealer.And after being filled with glass fibre felt, FAR25.856 in U.S. FAA can be met, the requirement of Boeing BMS8-142V and airbus AITM2-0053 and Chinese CCAR25.856.Ultrasonic sealing polyurethane adhesive, its mechanism of action be base polyurethane prepolymer for use as under ul-trasonic irradiation, curing cross-linked and form stable chemical constitution.It is the material of pure solid, does not need in use to add any solvent; Production efficiency is high, simple through ultrasonic hot composition operation technique during use; Have extremely strong permeability and affinity, bonding strength exceeds 40% ~ 60% than other adhesive under similarity condition; Good weatherability, has possessed irreversible characteristic after building bridge, and thus can not produce creep and embrittlement by variation of ambient temperature.The function admirables such as resistance to steam, chemicals-resistant and solvent resistant.
Detailed description of the invention
Below in conjunction with embodiment, the invention will be further described:
Embodiment: a kind of manufacturing process of large aircraft inner wall sealing bag weatherability film, comprises the following steps:
By 28 parts of polyurethane resin Bostick, 7412,30 parts of polyurethane resin Bostick, 7415,2 parts of crosslinking agent B oscodur, 21,2.5 parts of catalyst Metacue T-12,1.5 parts of surfactant Surfactant G125,15 parts of butanone, 17 parts of toluene, drop in mixing container, start variable-speed agitator, stir 2 ~ 3 hours continuously under the speed conditions of 400 ~ 600 revs/min;
In stirring, fluid temperature is elevated to 30 ~ 40 DEG C, and creating pockets of air, then stop stirring, obtain ultrasonic sealing polyurethane adhesive through filtration treatment;
Be arranged on by Kapton on film substrate let off roll, Kapton pulls out from film substrate let off roll by the first power traction rail;
Cast coat machine, by described ultrasonic sealing polyurethane adhesive, flows in the hopper of coating coating head of cast coat machine through charging pump, and is coated on Kapton;
Be arranged on the fortifying fibre net of fortifying fibre net let off roll, fall down on the Kapton dropping on and have ultrasonic sealing polyurethane adhesive by self weight, and be fitted on film after being soaked by ultrasonic sealing polyurethane adhesive;
The Kapton being loaded with described ultrasonic sealing polyurethane adhesive and fortifying fibre net enters baking oven, this ultrasonic sealing polyurethane adhesive carries out chemical reaction under heating and reaches precuring, changes from liquid into solid and is fixed on Kapton by fortifying fibre net;
Described ultrasonic sealing film carries out pressing in 135 ~ 155 DEG C of temperature, 35 ~ 41 Kpa pressure, charging rate under being the condition of 10 ~ 13 cm per minute through ultrasonic seam sealer.
The solid content of above-mentioned ultrasonic sealing polyurethane adhesive is 30%, and viscosity is 500 cps.
The coating weight of above-mentioned ultrasonic sealing polyurethane adhesive is 8 ~ 15 grams/m; 0.011 ~ 0.02 ounce/cubic zhang of described fortifying fibre net.
Above-mentioned ultrasonic sealing polyurethane adhesive is 30 ~ 35 ms/min at Kapton surface coating speed.
Above-mentioned oven temperature is 80 ~ 110 DEG C, is distributed in precuring under each section of baking oven 80-80-100-110-110-100-80 DEG C condition according to gradient.
Concrete technology is as follows: Kapton that is wide by a meter and 1 micron thickness is arranged on let off roll, and Kapton pulls out according to the speed of 30 ms/min by the first power traction rail from let off roll.The coating head slit of cast coat machine (adhesive apparatus for coating) is set to 40 microns.The solid content of the ultrasonic sealing polyurethane adhesive prepared in material storage container is 30%, and viscosity is 500 cps, flows in the hopper of cast coat coating head, and be coated on Kapton through charging pump.Fortifying fibre net proportion is 0.017 ounce/cubic zhang and is arranged on fortifying fibre net let off roll, fortifying fibre net falls down by self weight on the Kapton that drops on and have ultrasonic sealing polyurethane adhesive, and is fitted on film after being soaked by ultrasonic sealing polyurethane adhesive.The Kapton being loaded with ultrasonic sealing polyurethane adhesive and fortifying fibre net enters baking oven, oven temperature is 80 ~ 110 DEG C, each section of baking oven (80-80-100-110-110-100-80 DEG C is distributed according to gradient, solvent is volatilized extraction, ultrasonic sealing polyurethane adhesive carries out chemical reaction under heating and reaches precuring, changes from liquid into solid fleece to be fixed on film.Through the speed pull-out of the second power traction rail according to 30 ms/min, and rolling completes on wind-up roll.The ultrasonic sealing film appearance free from admixture of such preparation, without white point, without wrinkle, without crimping and bubble-free.Coating is evenly distributed, and the thickness of coating is 9 grams/m.Fortifying fibre net is evenly distributed, and grid becomes square, does not have lines to bend.The ultrasonic sealing film of preparation carries out pressing in 135 ~ 155 DEG C of temperature, 35 ~ 41 Kpa pressure, charging rate under being the condition of 10 ~ 13 cm per minute through ultrasonic seam sealer.Its peel strength is 524 grams/cm.
Above-described embodiment, only for technical conceive of the present invention and feature are described, its object is to person skilled in the art can be understood content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalences done according to Spirit Essence of the present invention change or modify, and all should be encompassed within protection scope of the present invention.
Claims (5)
1. a manufacturing process for large aircraft inner wall sealing bag weatherability film, is characterized in that: comprise the following steps:
By 28 parts of polyurethane resin Bostick, 7412,30 parts of polyurethane resin Bostick, 7415,2 parts of crosslinking agent B oscodur, 21,2.5 parts of catalyst Metacue T-12,1.5 parts of surfactant Surfactant G125,15 parts of butanone, 17 parts of toluene, drop in mixing container, start variable-speed agitator, stir 2 ~ 3 hours continuously under the speed conditions of 400 ~ 600 revs/min;
In stirring, fluid temperature is elevated to 30 ~ 40 DEG C, and creating pockets of air, then stop stirring, obtain ultrasonic sealing polyurethane adhesive through filtration treatment;
Be arranged on by Kapton on film substrate let off roll, Kapton pulls out from film substrate let off roll by the first power traction rail;
Cast coat machine, by described ultrasonic sealing polyurethane adhesive, flows in the hopper of coating coating head of cast coat machine through charging pump, and is coated on Kapton;
Be arranged on the fortifying fibre net of fortifying fibre net let off roll, fall down on the Kapton dropping on and have ultrasonic sealing polyurethane adhesive by self weight, and be fitted on film after being soaked by ultrasonic sealing polyurethane adhesive;
The Kapton being loaded with described ultrasonic sealing polyurethane adhesive and fortifying fibre net enters baking oven, this ultrasonic sealing polyurethane adhesive carries out chemical reaction under heating and reaches precuring, changes from liquid into solid and is fixed on Kapton by fortifying fibre net;
Described ultrasonic sealing film carries out pressing in 135 ~ 155 DEG C of temperature, 35 ~ 41 Kpa pressure, charging rate under being the condition of 10 ~ 13 cm per minute through ultrasonic seam sealer.
2. the manufacturing process of weatherability film according to claim 1, is characterized in that: the solid content of described ultrasonic sealing polyurethane adhesive is 30%, and viscosity is 500 cps.
3. the manufacturing process of weatherability film according to claim 1, is characterized in that: the coating weight of described ultrasonic sealing polyurethane adhesive is 8 ~ 15 grams/m; 0.011 ~ 0.02 ounce/cubic zhang of described fortifying fibre net.
4. the manufacturing process of weatherability film according to claim 1, is characterized in that: described ultrasonic sealing polyurethane adhesive is 30 ~ 35 ms/min at Kapton surface coating speed.
5. the manufacturing process of weatherability film according to claim 1, is characterized in that: described oven temperature is 80 ~ 110 DEG C, is distributed in precuring under each section of baking oven 80-80-100-110-110-100-80 DEG C condition according to gradient.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410382880.3A CN104260381A (en) | 2014-08-06 | 2014-08-06 | Production process of weather resistant film for large aircraft inner wall sealing bag |
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| CN201410382880.3A CN104260381A (en) | 2014-08-06 | 2014-08-06 | Production process of weather resistant film for large aircraft inner wall sealing bag |
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| CN104260381A true CN104260381A (en) | 2015-01-07 |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102267264A (en) * | 2011-05-16 | 2011-12-07 | 苏州斯迪克电子胶粘材料有限公司 | Ultrasonic sealing film for preparing insulating sealable bags on inside walls of aircrafts, and preparation method thereof |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102267264A (en) * | 2011-05-16 | 2011-12-07 | 苏州斯迪克电子胶粘材料有限公司 | Ultrasonic sealing film for preparing insulating sealable bags on inside walls of aircrafts, and preparation method thereof |
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Application publication date: 20150107 |