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Vacuum bag film with heating function and preparation method and application thereof

A vacuum film and vacuum bag technology, applied in the field of packaging, can solve the problems of resource and cost waste, large autoclave, unfavorable industrialization development, etc., and achieve the effect of reducing energy loss and production cost

Pending Publication Date: 2021-07-09
SHANGHAI LEADGO TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] According to the above-mentioned patents, when the vacuum bag film is prepared into a composite material, it is suitable for the autoclave molding process. Among them, different resin systems have different curing temperatures, and the entire autoclave needs to be heated. Generally, large-scale composite material structural parts need to be heated. A large autoclave is used, the largest of which needs to be the size of a two- or three-story building, and its overall heating requires a lot of energy, resulting in a waste of resources and costs, which is not conducive to industrial development

Method used

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  • Vacuum bag film with heating function and preparation method and application thereof
  • Vacuum bag film with heating function and preparation method and application thereof
  • Vacuum bag film with heating function and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] A vacuum bag having a fever function, a cross-sectional structure, such as figure 1 As shown, a vacuum film layer 1 and a conductive fever layer 2 are included;

[0046] Among them, the vacuum film layer 1 is a nylon film (Shanghai Baoyue, LVF230B) having a thickness of 75 μm;

[0047] The conductive heat generating layer 2 has a thickness of 50 μm, and the material includes the following components according to the weight:

[0048]

[0049]

[0050] Among them, the epoxy resin is derived from Yansen, 5003, and the leveling agent is derived from BYK-420, and the dispersant is derived from Byk-180, and the defoaming agent is derived from Bik-016;

[0051] The method of preparing the vacuum bag film provided in this example includes the steps of:

[0052] (1) Carbon black, epoxy resin, deionized water, ethanol, leveling agent, dispersant, and antifoaming agent are mixed under conditions of 1000 rpm at a rotational speed to obtain a carbon-based conductive ink;

[0053] (2...

Embodiment 2

[0055] A vacuum bag film having a heat generating function, which is the same as that of Example 1; including a vacuum film layer and a conductive heat excitation layer;

[0056] Among them, the vacuum film layer is a nylon film having a thickness of 50 μm; (Shanghai Baoyue, LVF230B);

[0057] The electrically conductive heat-insulating layer has a thickness of 30 μm, and the material includes the following components according to the weight:

[0058]

[0059] Among them, the polyurethane resin is derived from river, H-28N, and the leveling agent originated from Byk-420, the dispersant derived from Byk-180, and the defoaming agent originated from Bike Chemical, BYK-016;

[0060] The method of preparing the vacuum bag film provided in this example includes the steps of:

[0061] (1) A carbon nanotube, polyurethane resin, deionized water, n-propanol, a leveling agent, dispersant, and antifoaming agent are mixed under a rotational speed of 900 rpm, resulting in a carbon-based condu...

Embodiment 3

[0064] A vacuum bag film having a heat generating function, which is the same as that of Example 1; including a vacuum film layer and a conductive heat excitation layer;

[0065] Among them, the vacuum film layer is a nylon film (Shanghai Baoyue, LVF230B) having a thickness of 100 μm;

[0066] The electrically conductive heat-insulating layer has a thickness of 100 μm, and the material includes the following components according to the weight:

[0067]

[0068] Among them, acrylic resin is derived from Han Hua, Soluryl-120, graft from Byk-420, dispersant from manufacturer Byk-180, defoamer comes from Bike Chemical, Model BYK- 016;

[0069] The method of preparing the vacuum bag film provided in this example includes the steps of:

[0070] (1) Grain, acrylic resin, deionized water, isopropanol, leveling agent, dispersant, and antifoaming agent are mixed under conditions of a rotational speed of 1200 rpm to obtain a carbon-based conductive ink;

[0071] (2) The carbon-based conduc...

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Abstract

The invention provides a vacuum bag film with a heating function and a preparation method and application thereof. The vacuum bag film comprises a conductive heating layer and a vacuum film layer; the conductive heating layer comprises the following components in parts by weight: 10-40 parts of a carbon-series conductive material, 10-40 parts of a binder and 20-50 parts of a solvent; the carbon-series conductive material with specific parts is added into the material of the conductive heating layer, so that the vacuum bag film has a heating function, the temperature condition required for preparing the composite material by the autoclave forming process is provided through the autonomous heating of the vacuum bag film, the whole autoclave does not need to be additionally heated, the energy loss and the production cost are greatly reduced, and the vacuum bag film has important research value.

Description

Technical field [0001] The present invention belongs to the field of packaging technology, and more particularly to a vacuum bag film having a heat generating function and a preparation method thereof and a method thereof. Background technique [0002] During the molding of the composite material, the vacuum bag film plays a sealing, which is an important consumable of the vacuum process, which is a primary material that determines product quality. On the one hand, as the research and development of high temperature resins is successful, the vacuum consumables require the same improvement, the traditional nylon composite film has not been able to meet the high temperature molding temperature requirements; on the other hand, with the continuous development of the molding process, in order to minimize material costs and artificial Cost, more and more composite manufacturers tend to use a single film to perform vacuum molding, which requires not only good sealing, but also has more ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/00C08J7/044C09D11/102C09D11/107C09D11/52
CPCC08J7/044C09D11/52C09D11/102C09D11/107C08J2377/00C08J2463/00C08J2475/04C08J2433/04
Inventor 胡仲杰胡建景岑婵芳胡潇
Owner SHANGHAI LEADGO TECH
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