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Membrane for sealing bag on inner wall of large airplane and surface treatment method thereof

A technology for surface treatment and sealing bags, which is applied in the field of surface treatment of films, can solve the problem that the continuous surface treatment method of polyvinylidene fluoride film has not yet appeared, achieve uniform coating distribution, improve adhesive strength, and increase specific surface area. Effect

Active Publication Date: 2013-01-30
太仓斯迪克新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] However, to date, methods for the continuous surface treatment of PVDF films have not emerged

Method used

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  • Membrane for sealing bag on inner wall of large airplane and surface treatment method thereof
  • Membrane for sealing bag on inner wall of large airplane and surface treatment method thereof
  • Membrane for sealing bag on inner wall of large airplane and surface treatment method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Embodiment 1: film and its surface treatment method for the inner wall seal bag of large aircraft

[0048] See attachment for processing device figure 1 .

[0049] Prepare sodium naphthalene complex solution (treatment agent) according to the following ratio:

[0050] Take 534 kg of tetrahydrofuran and put it into the feeding tank, add 25.6 kg of naphthalene, turn on the stirrer to dissolve it completely, weigh 4.6 kg of sodium and cut it into small pieces, add it gradually while stirring, pass in nitrogen, and control the temperature of the reaction system at 20°C Next, after reacting for 2 hours, filter to prepare a uniform sodium-naphthalene complex solution for use.

[0051] The polyvinylidene fluoride film is pulled out from the unwinding roller 1 at a speed of 10 m / min (driven by the power traction rail and the winding roller 11), treated with sodium naphthalene complex solution, and then cleaned by the cleaning tank 6 ( After the cleaning liquid is acetone), i...

Embodiment 2

[0054] Embodiment 2: film and its surface treatment method for the inner wall seal bag of large aircraft

[0055] See attachment for processing device figure 1 .

[0056] Prepare sodium naphthalene complex solution (treatment agent) according to the following ratio:

[0057] Take 534 kg of tetrahydrofuran and put it into the feed tank, add 56.2 kg of naphthalene, turn on the stirrer to dissolve it completely, weigh 9.2 kg of sodium and cut it into small pieces, add it gradually while stirring, pass in nitrogen, and control the temperature of the reaction system at 20 °C Next, after reacting for 2 hours, filter to prepare a uniform sodium-naphthalene complex solution for use.

[0058] The polyvinylidene fluoride film is pulled out from the unwinding roller 1 at a speed of 15 m / min, treated with a sodium-naphthalene complex solution, and then cleaned in the cleaning tank 6 (acetone), and then enters the oven 9 and the oven 9 The temperature gradient is 50-80-80-100-100-80-50,...

Embodiment 3

[0061] Embodiment 3: The film and its surface treatment method for the inner wall seal bag of large aircraft

[0062] See attachment for processing device figure 1 .

[0063] Prepare sodium naphthalene complex solution (treatment agent) according to the following ratio:

[0064] Take 534 kg of tetrahydrofuran and put it into the feeding tank, add 76.8 kg of naphthalene, turn on the stirrer to dissolve it completely, weigh 13.8 kg of sodium and cut it into small pieces, add it gradually while stirring, pass in nitrogen, and control the temperature of the reaction system at 20°C Next, after reacting for 2 hours, filter to prepare a uniform sodium-naphthalene complex solution for use.

[0065] The polyvinylidene fluoride film is pulled out from the unwinding frame at a speed of 18 m / min, treated with a sodium-naphthalene complex solution, and then cleaned in the cleaning tank 6 (acetone), and then enters the oven 9 and the oven 9. The temperature gradient is 50-80-80-100-100-8...

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Abstract

The invention relates to a membrane for a sealing bag on the inner wall of a large airplane and a surface treatment method thereof. A plastic membrane is polyvinylidene fluoride (PVDF). The surface treatment process comprises the following steps of: drawing the membrane out on an unreeling roll, treating by a sodium naphthalene complexing liquid treatment tank continuously, washing by an acetone treatment tank, drying by a drying oven, and rolling. The surface treatment method is suitable for large-scale continuous production. The surface of the membrane is subjected to chemical treatment by a treatment method of sodium naphthalene complexing liquid, so that defluorination is performed on the surface of the membrane to form a charring layer, and active groups such as hydroxyl, carbonyl, unsaturated double bonds and the like are introduced; the thickness of the membrane is between 12 and 37 micrometers; corrosion holes are distributed on surfaces of both sides of the membrane uniformly, and 0.1 to 0.2 millions of corrosion holes are formed on surface per 1 square centimeter of the membrane; the depth of each corrosion hole is between 0.5 and 1.0 micrometer, and the bore diameter is between 0.02 and 0.2 micrometer; and the surface energy of the treated membrane is between 300 and 500 muN / cm, a contact angle of the membrane on water is between 80 and 125 degrees, and the peel strength is between 30 and 55 N / inch.

Description

technical field [0001] The invention relates to a surface treatment method of a film, in particular to a film used for a sealed bag on the inner wall of a large aircraft and a surface treatment method thereof. Background technique [0002] Although the global commercial aircraft industry has been affected by the current economic downturn, the long-term outlook of the global commercial aircraft industry remains positive. For the industry's most important product - narrow-body and wide-body aircraft for passenger and cargo transportation, that is, large commercial aircraft words, especially so. [0003] Forecasts for the next 20 years indicate that fare passenger miles, the driver of the global commercial aircraft industry, will grow by approximately 5% per year, which is twice the expected growth rate for the entire global economy. Orders for commercial aircraft in 2006 and 2007 also reached a new high of 4,000 cumulative. Today, 36% of the total backlog for large commercia...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J7/12C08L27/16B29C71/00
Inventor 金闯杨晓明
Owner 太仓斯迪克新材料科技有限公司