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High-temp resistant fire-retarding electrically heating plate able to shield ultraviolet radiation and its manufacture method

A UV and high heat-resistant technology, applied in heating methods, household heating, electric heating systems, etc., can solve the problems of non-flammability of insulating materials, radiation damage to the body, low heat-resistant temperature, etc., to achieve easy heat and strong safety , Even heating effect

Inactive Publication Date: 2004-03-10
穆顺法
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its shortcoming is that: due to the characteristics and mutual differences of the conductive phases of various heating elements, the radiation wave produced by each material is a mixed wave composed of a composite spectrum, which is not 100% beneficial to the body. May cause radiation damage to the body
In addition, because the insulating materials used in some electric heating films (boards) are not flame retardant, and the heat-resistant temperature is low (Tg<100°C), this also brings great potential danger to the use of electric heating films (boards).

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Embodiment 1: after 6 kilograms of dicyandiamide curing agents are thoroughly dissolved with 36 kilograms of dimethylformamide, with EPON.1031 ultraviolet shielding resin (A) 20 kilograms, LZ8018 brominated epoxy resin (B) 230 kilograms, two Methylimidazole 0, 15 kg, add 1:1 ethylene glycol-methyl ether, appropriate amount of acetone solvent, fully mix and stir to make a glue solution with a solid content of 42-48%, and mature for 12 hours. Then the electronic-grade glass fiber silane pretreated fabric is impregnated with glue, measured and dried to make a resin bonded sheet with a resin content of 35-60%, a resin fluidity of 16-25%, and a gelation time of 80-200 seconds. . Laminate the conductive lead wire with a thickness of 35 microns and a width of 20 mm, carbon fiber heating paper, adhesive sheet, steel template, and release film, heat and press for 140 minutes at a vacuum degree of 730mmHg, 185°C, and a pressure of 4.0MPa, and then cure it. The ultraviolet shield...

Embodiment 2

[0018] Example 2: Repeat the procedure of Example 1, but adjust the ratio of UV shielding resin (A) and brominated epoxy resin (B) accordingly to obtain formula A: (A) / (B)=6, 25 kg / 243, 75 kg; Formula B: (A) / (B)=10 kg / 240 kg; Formula C: (A) / (B)=17, 5 kg / 232, 5 kg; Formula D: (A) / (B)=25 kg / 225 kg; formula O: (A) / (B)=0 kg / 250 kg, each group of electric heating plate samples were prepared.

Embodiment 3

[0019] Example 3: 45 parts of brominated epoxy resin, 12 parts of ultraviolet shielding resin, 63 parts of phenolic resin, 40 parts of toluene, 0, 2-0, 25 parts of triethanolamine. Add 1 and 5 parts of antimony oxide and 5 parts of zinc borate as flame retardant, mix and stir thoroughly to prepare a sizing solution with a solid content of 45-60%, and mature for 12 hours. Other materials and technology are with embodiment 1. An ultraviolet shielding high Tg flame retardant electric heating plate was prepared.

[0020] The properties of the ultraviolet shielding high Tg flame retardant electric heating panels obtained in the above examples are shown in Table 1-3.

[0021] performance

Example 1

Example 2

Example 3

Insulation resistance Ω

＞1.0×10 11

＞1.0×10 11

＞1.0×10 11

Parallel layer dielectric breakdown KV

＞40

＞40

＞40

Dielectric strength V

＞6000

＞6000

＞6000

...

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PUM

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Abstract

A high-temp-resistant flame-retarding electrothermal plate able to shield ultraviolet ray radiation is composed of heat generating body, electric insulating material and electric leading-out lines, and is made through proportionally mixing ultraviolet absorbent, flame-retarding thermo-setting resin, assistant and organic solvent, dipping the reinforced substrate in the mixture, drying to obtain the resin sheet as electric insulating material, laminating the steel template plate, parting film, resin sheet, heat generating body and electric leading-out lines, and vacuum hot pressing. Its advantages are high ultraviolet shielding and heat radiating performance, and high heat generting uniformity.

Description

technical field [0001] The invention belongs to the technical field of preparation of electric heating materials, and in particular relates to a high heat-resistant and flame-retardant electric heating plate capable of shielding ultraviolet radiation and a production method thereof. Background technique [0002] At present, heating with electric heating appliances is gradually supplementing and replacing traditional hot water radiators for heating due to its advantages of convenient use, flexible temperature control, separate metering, and no environmental pollution. As far as electric heating appliances are concerned, there are infrared lamps, electric radiators, metal resistance wires, PTC ceramic electric heaters, heating and cooling air conditioners, and electric heating film (plates) and other products. Among them, the performance of the electric heating film (plate) is the most prominent, and the heating form of low-temperature radiation is differ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24D13/00
Inventor 穆顺法
Owner 穆顺法