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PTC composite material heating film and manufacturing method and application thereof

A composite material and composite material layer technology, applied in the field of PTC composite material heating film, can solve the problems of slow heating speed, no heating film using composite materials, easy to cause fire and other problems

Active Publication Date: 2013-12-25
WUHAN SAIYANG INDOOR CLIMATE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Radiator heating has the following disadvantages: first, the heating speed is slow; second, the heat loss is large; third, the indoor temperature difference is obvious; fourth, improper use is easy to cause fire
In the papermaking process, paper fibers and carbon fibers are difficult to disperse evenly, which will cause uneven heating and pose a safety hazard
And CN103002610A invention adopts electric heating paper as main heating device, and the paper fiber that adopts in electric heating paper is a kind of flammable material, if during heating period, if the heat fails to dissipate in time due to external reasons, the local overheating that causes, there is safety. Hidden dangers, and the above-mentioned membrane itself does not have the ability of self-temperature control
However, there have been no reports of heat-generating films using composite materials with PTC properties

Method used

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  • PTC composite material heating film and manufacturing method and application thereof
  • PTC composite material heating film and manufacturing method and application thereof
  • PTC composite material heating film and manufacturing method and application thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0035] Such as figure 2 The preparation method of the above-mentioned PTC composite heating film 10 shown includes the following steps:

[0036] S10 , providing a first polymer prepreg, and coating the PTC composite slurry on the first polymer prepreg to form a PTC composite material layer 13 .

[0037] The first polymer prepregs can be purchased directly from the market as finished products. Prepregs made of epoxy resin are generally selected.

[0038] The solute of the PTC composite slurry is a mixture composed of 20-90 parts by mass of conductive particles, 10-80 parts of high molecular polymer and 1-10 parts of additives.

[0039] Conductive particles are selected from at least one of carbon black, graphite powder, carbon fiber powder, metal powder, carbon nanotubes and graphene

[0040] The high molecular polymer is at least one selected from polyamide, polyethylene, polypropylene, polyvinylidene fluoride, polychlorotrifluoroethylene, epoxy resin and polyimide.

[00...

Embodiment 1

[0057] Weigh 6g of carbon fiber powder and 4g of epoxy resin. Soak the carbon fiber powder in methyl ethyl ketone and stir for one hour, wash off the gum on the surface of the carbon fiber, pour off the methyl ethyl ketone, then put the carbon fiber powder and epoxy resin into a clean container, and dry it at 80°C. The epoxy resin was dissolved in methyl ethyl ketone. The curing agent dicyandiamide is used as an additive, and 0.24 g of dicyandiamide is weighed and dissolved with N,N-dimethylformamide. The curing agent solution, the epoxy resin solution and the carbon fiber powder were mixed and stirred continuously for 1 hour to obtain a uniformly mixed PTC composite slurry.

[0058] Provide the first polymer prepreg made of epoxy resin, print the PTC composite slurry on the first polymer prepreg with a screen printing machine to form a PTC composite slurry layer, and then paste on both ends of the PTC composite slurry layer Copper foil is used as an electrode, kept at 120°C...

Embodiment 2

[0060] Weigh 3g of carbon black and 7g of epoxy resin. Soak the carbon black in methyl ethyl ketone and stir for one hour, wash off the colloid on the surface of the carbon black, pour off the methyl ethyl ketone, then put the carbon black and epoxy resin into a clean container, and dry it at 80°C. The epoxy resin was dissolved in methyl ethyl ketone. The curing agent dicyandiamide is used as an additive, and 0.36 g of dicyandiamide is weighed and dissolved with N,N-dimethylformamide. The curing agent solution, the epoxy resin solution and the carbon fiber powder were mixed and stirred continuously for 1 hour to obtain a uniformly mixed PTC composite slurry.

[0061] Provide the first polymer prepreg made of epoxy resin, print the PTC composite slurry on the first polymer prepreg with a screen printing machine to form a PTC composite slurry layer, and then paste on both ends of the PTC composite slurry layer Copper foil is used as an electrode, kept at 120°C for one hour, th...

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Abstract

The invention discloses a PTC composite material heating film which comprises a first macromolecule solidification sheet, a PTC composite material layer and a second macromolecule solidification sheet, wherein the first macromolecule solidification sheet, the PTC composite material layer and the second macromolecule solidification sheet are stacked in sequence. The PTC composite material layer of the PTC composite material heating film is a mixture composed of the following materials, by weight, 20 to 90 parts of conducting particles, 10 to 80 parts of high-molecular polymer and 1 to 10 parts of annexing agents, namely, the materials of the PTC composite material layer are crystalized or semi-crystalized polymer composites filling with the conducting particles, wherein the composites shows PTC characteristics. Due to the fact that the composites with the PTC characteristics is adopted by the PTC composite material heating film, overheating protection can be carried out through own intelligent temperature control. The invention further discloses a manufacturing method of the PTC composite material heating film and electrothermal film floor heating components adopting the PTC composite material heating film.

Description

technical field [0001] The invention relates to the field of floor heating materials, in particular to a heating film made of PTC composite material and a preparation method and application thereof. Background technique [0002] At present, the traditional heating methods of domestic houses generally include: air-conditioning heating, radiator heating, and electric heating membrane heating. [0003] The air conditioning heating method belongs to the use of thermal convection to heat the air in the house to increase the indoor temperature. In our country, this method is widely used in the south where central heating is not installed. The disadvantages of air conditioning and heating are as follows: first, the air conditioner is large in size and needs to occupy indoor space; second, the forced air convection causes indoor dust, which is harmful to health; third, the proportion of hot air is small, and it will be concentrated on the top of the house , The indoor temperature ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B3/34F24D13/02
Inventor 孙蓉李畅郭慧子符显珠
Owner WUHAN SAIYANG INDOOR CLIMATE
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