CN2209180Y

CN2209180Y - Electrothermal coating structure for covering of wall

Info

Publication number: CN2209180Y
Application number: CN 94217685
Authority: CN
Inventors: 朱双全; 李建桥; 薜继恒
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-08-03
Filing date: 1994-08-03
Publication date: 1995-10-04
Anticipated expiration: 2004-08-03

Abstract

The utility model provides an electrothermal coating structure for covering of a wall. The utility model comprises a base bottom, a heating coating, and an electrode, wherein, the base bottom is coated with the heating coating, the electrode is electrically connected with the heating coating, and the heating coating can be coated with an insulating layer when necessary. The utility model has the advantages of simple structure, convenient manufacture, low cost, good uniformity, and fast temperature rise, being suitable for use in indoor heating, industrial low temperature drying and baking, and heat preservation for incubation.

Description

Electrothermal coating structure for covering of wall

The utility model relates to a kind of electro-thermal coatings structure that is covered in body of wall.

At present as winter indoor electric heating generally adopt quartzy warmer and electric heating spit of fland (filling type) warmer, and the dry baking of industrial low-temperature all adopts warm-air pipe to lead (unit heater air-supply) intensification, its cost height, engineering bulky complex.

It is lower, simple in structure, easy to make that the purpose of this utility model provides a kind of cost, can be used for warming oneself and the electro-thermal coatings structure of industrially drying baking.

The technical scheme that the utility model provides is: a kind of electro-thermal coatings structure that is covered in body of wall, comprise substrate and be coated in suprabasil heating coating and with the electrode that electrically connects of heating coating.

And, be coated with insulating layer on the heating coating.

And substrate is an inorganic insulating material, as sheet asbestos, gypsum plank, silicates thermal insulation material, calcium carbonate fiberboard, cement, refractory brick, marble etc. or by as described in the metope table body made of inorganic insulating material.

And, described heating coating belongs to semi-conducting material, and its component is (meter by weight): 100 parts of the above graphite powders of 80 orders, 30～50 parts of titanium dioxide powders, 200～250 parts of sodium silicate solutions (being commonly called as water glass), 10～15 parts in aluminium silver powder, 5～10 parts of nickel powders, 5～10 parts of tin dioxide powders, 2～5 parts in antimony trioxide powder, 80～100 parts in water.

And heating layer thickness is 0.05～1mm, power density 0.1～1.5w/cm ², electrode distance 40～150cm.

The utility model make easily, and cost is low, long service life owing to adopt such scheme not only simple in structure.Heating coating adhesion of the present utility model in addition is strong, heating up is fast, power controlled, and protection against the tide and antioxygenic property are good, the flames of anger, pollution-free.Being suitable for heating of house, the dry baking of industrial low-temperature and hatching insulation uses.

Below in conjunction with accompanying drawing the utility model is described in further detail.

Fig. 1 is a front view of the present utility model;

Fig. 2 is the partial enlarged drawing of Figure 1A-A section.

With reference to Fig. 1, Fig. 2, the utility model is by substrate 1 and be coated in the heating coating 2 in the substrate 1 and be fixed in the substrate 1 and constitute with electrode 3 that heating coating 2 electrically connects.In case of necessity, also can be coated with insulating layer coating 4 on the heating coating 2.

The metope table body that substrate 1 is generally inorganic insulating materials such as sheet asbestos, cement, gypsum plank, silicates thermal insulation material, calcium carbonate fiberboard, refractory brick, marble or is made by these inorganic material.With substrate 1 surfacing smooth after, heating temp lower (in 100 ℃) requires copper (aluminium) slip is consistent in substrate 1 and with basal surface with the screw edge is solid according to heating temp, if also can directly be bonded in copper mesh or

thin electrode

3,5 in the substrate 1 with the heatproof bonding adhesive.Electrode distance generally suits between 40cm～150cm.After electrode 3 cloth are good, the coating of will generating heat 2 materials are by following prescription (parts by weight): 100 parts of conducting particles of the above graphite powder of 80 orders, 30～50 parts of titanium dioxide powders (resistance trimming agent), 200～250 parts of sodium silicate solutions (curing compound), 10～15 parts in aluminium silver powder, 5～10 parts of nickel powders, 5～10 parts of tin dioxide powders, 2～5 parts of antimony sesquioxide powders (antioxygen fireproofing agent), 80～100 parts in water (thinner) is selected the evenly manual brushing of one group of modulation as required, 40～60 order serigraphys or be sprayed on electrode 3 in the substrate 1, between 5 and make the heating coating that coats 2 and

electrode

3,4 keep electrically connecting.Coating 2 thickness generally determine according to heating temp, and generally between 0.05～1mm, coating 2 can whole coating between

electrode

3,5, also can be coated with at interval by parallel way, and coating 2 adopts from doing or 40～80 ℃ of oven dry.

For civilian heating, generally will consider Insulation Problems, temperature of the present utility model is controlled at more than the normal temperature (20 ℃) during heating, in 100 ℃, generally between 70～100 ℃, can directly be coated on the heating coating 2 as insulating layer 4 with silicone based heatproof insulating paint.If industrially drying baking (100～300 ℃), higher and genus closure working environment generally should not be coated with layer of cloth because of its temperature.

Definite only need of the utility model power adjusted the heating coating resistance, presses W=V then ²/ R promptly.Power (W) is inversely proportional to electrode distance, is directly proportional with the coating thickness, after the heating coating forms, also can control power and temperature thereof by the variation of external voltage.

The utility model important technological parameters: power density 0.1～1.5W/cm ²: coating temperature normal temperature to 300 ℃, coating resistance is a negative temperature coefficient, working voltage: high-low pressure all can, adhesive power: the 100%(cross-hatching).

Claims

1, a kind of electro-thermal coatings structure that is covered in body of wall is characterized in that the electrode [3] that it comprises substrate [1] and is coated in the heating coating [2] in the substrate [1] and electrically connects with heating coating [2].

2, electro-thermal coatings structure according to claim 1 is coated with insulating layer ［ 4 ］ on the coating ［ 2 ］ that it is characterized in that generating heat.

3, electro-thermal coatings structure according to claim 1 and 2 is characterized in that base material is an inorganic insulating material.

4, electro-thermal coatings structure according to claim 1 and 2, the coating ［ 2 ］ that it is characterized in that generating heat belongs to semi-conducting material, and its component is (meter by weight) 100 parts of above graphite powders of 80 orders, 30～50 parts of titanium dioxide powders, 200～250 parts of sodium silicate solutions, 10～15 parts in aluminium silver powder, 5～10 parts of nickel powders, 5～10 parts of tin dioxide powders, 2～5 parts of antimony sesquioxide powders, 80～100 parts in water.

5, electro-thermal coatings structure according to claim 4 is characterized in that heating layer ［ 2 ］ thickness is that 0.05～1mm, power density are 0.1～1.5w/cm ², electrode distance 40～150cm.