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High polymer composite electrothermal film and preparation method thereof

A technology of electric heating film and polymer, which is applied in the field of polymer composite electric heating film and its preparation, can solve the problems that the electric heating film cannot be integrated, the conductive medium has no flame-retardant components, and has no flame-retardant effect, so as to achieve safety in use High, no reduction in strength, high heat resistance and high strength

Active Publication Date: 2016-12-07
江苏康尼纺织品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese Patent Announcement No. CN104918341A, dated September 16, 2015, titled "Method for Applying Carbon Nanotubes to Floor Heating Electrothermal Films", discloses that a conductive medium composed of polyurethane and carbon nanotubes is used for dipping and installing The heat-generating material obtained from the polyester grid matrix of tin-copper foil wire has some shortcomings: the thermoplastic polyurethane resin material used has low heat resistance, so it is easy to soften when heated and has low strength; there is no effective resistance in the conductive medium. Combustible components, low safety in use; PE and PET layers used outside the heating material are used as protective insulating layers, there is no bonding effect with the heating element, the electric heating film cannot be integrated, it is inconvenient to install, and the safety is low during work; PE and PET The protective insulating layer of the PET layer is a polymer material, which has no flame retardant effect and low heat transfer efficiency

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] 1) Preparation of polyurethane resin conductive adhesive: weigh 500g of aromatic polyester polyol (hydroxyl value 200mgKOH / g, acid value 1.0mgKOH / g, viscosity 4000mPas), 500g of 2nm single-walled carbon nanotubes, Magnesium hydroxide 200g, aluminum hydroxide 200g, KH-550 25g, dipropylene glycol dibenzoate 100g, stannous octoate 10g and ethyl acetate 1.5kg were placed in a grinding disperser for dispersing and grinding, and then stood still for 1 hour. Add 325 g of diphenylmethyl diisocyanate and stir evenly to obtain a polyurethane resin conductive adhesive;

[0032] 2) Preparation of heating film: Weave a copper foil wire on both sides of the glass fiber cloth base material, then fully impregnate the glass fiber cloth base material with the polyurethane resin conductive adhesive obtained in step 1), and place it in an oven at 60 °C Medium and curing for 8 hours to obtain a thermosetting polyurethane resin heating film;

[0033] 3) Preparation of polyurethane resin ins...

Embodiment 2

[0037]1) Preparation of polyurethane resin conductive adhesive: Weigh 500g of aromatic polyester polyol (hydroxyl value 300mgKOH / g, acid value 2.0mgKOH / g, viscosity 2000mPas) and multi-walled carbon nanometers with a diameter of 2nm by weight. Tube 400g, melamine 300g, KH-560 15g, bis(butoxyethoxyethyl) adipate 50g, dibutyltin dilaurate 5g and acetone 1.25kg, place in a grinding disperser for dispersing and grinding, then let stand After 1 hour, add 360 g of diphenylmethyl diisocyanate and stir evenly to obtain a polyurethane resin conductive adhesive;

[0038] 2) Preparation of heating film: Weave a copper foil wire on both sides of the glass fiber cloth base material, and then fully impregnate the glass fiber cloth base material with the polyurethane resin conductive adhesive obtained in step 1), and place it in an oven at 65°C Medium and curing for 6 hours to obtain a thermosetting polyurethane resin heating film;

[0039] 3) Preparation of polyurethane resin insulating gl...

Embodiment 3

[0043] 1) Preparation of polyurethane resin conductive adhesive: Weigh 500g of aromatic polyester polyol (hydroxyl value 450mgKOH / g, acid value 0.5mgKOH / g, viscosity 200mPas) and single-walled carbon with a diameter of 0.6nm by weight. 350g of nanotubes, 250g of ammonium polyphosphate, 5g of KH-570, 25g of dipropylene glycol dibenzoate, 2.5g of stannous oxalate and 1.0kg of methyl ethyl ketone were placed in a grinding and dispersing machine for dispersing and grinding, then stood still for 1 hour, and added Diphenylmethyl diisocyanate 425g, stir well, obtain polyurethane resin conductive glue;

[0044] 2) Preparation of heating film: Weave a copper foil wire on both sides of the glass fiber cloth base material, then fully impregnate the glass fiber cloth base material with the polyurethane resin conductive adhesive obtained in step 1), and place it in an oven at 70°C Medium and curing for 4 hours to obtain a thermosetting polyurethane resin heating film;

[0045] 3) Preparat...

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Abstract

The invention discloses a high polymer composite electrothermal film. The film comprises a carbon-nano-tube polyurethane resin thermal film and an electrode, and is characterized in that the carbon-nano-tube polyurethane resin thermal film is composed of a thermosetting polyurethane resin conductive heating layer and a polyurethane resin insulating layer by hot-pressing. Compared with the existing thermosetting polyurethane resin electrothermal film, the electrothermal film disclosed by the invention is high in heat resistance and strength, is not softened within the temperature range of 160 DEG C, can maintain the strength, meets the halogen-free flame-retardant and environmental-friendly requirements and reaches the level UL 94V-0; the application safety performance is high, the heat generation efficiency is improved by 10%, the heat transfer efficiency of the electrothermal film is improved by 20-30%, and temperature rise is rapid.

Description

technical field [0001] The invention belongs to the technical field of electrothermal material manufacturing, and in particular relates to a polymer composite electrothermal film and a preparation method thereof. Background technique [0002] The heating principle of the electrothermal film heating system is to convert electric energy into heat energy, and radiate heat outward in the form of infrared rays, so that the human body and objects are evenly heated. Compared with traditional air-conditioning, heating, etc., which use forced convection to circulate hot air for heating, the electric heating film heating system has the advantages of comfort and health, space saving, high efficiency and energy saving, good thermal stability, low operating costs, long service life and good safety. As a new heating technology, the membrane heating system meets the development requirements of future energy conservation and environmental protection. [0003] According to the type of elect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B17/02B32B17/12B32B27/04B32B27/40C08G18/42C08K7/24C08K3/04C09J175/06C09J9/02
CPCB32B5/02B32B5/26B32B2260/023B32B2260/046B32B2262/101C08G18/4208C08K3/04C08K7/24C09J9/02C09J175/06Y02P20/10
Inventor 刘子寒
Owner 江苏康尼纺织品有限公司
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