SU598271A1 - Method of manufacturing polymer electric heater - Google Patents

Description

the kidneys rupture, coagulation of the dispersed particles of the insulating resin occurs. As a result, the electrical conductance of the resistive element becomes uneven on the surface, and the total resistance varies with respect to the initial value.

In order to increase the stability of the electrical parameters of the electric heater according to the proposed method, the resistive element e, before applying the insulation coating, is additionally compacted by the resistance of the electric heater.

When used as a binding phenohe formaldehyde resin, there is an impurity from the required electrical pa- modified with BF glue, pheno-formaldehyde resin P-2 (resin). about.,. -phenolic ormaldehyde lacquer IF..L ....... -h: aja | acev evov and. -graphic ... °., s..o ,, ..... pp., .. s .. ".....,", o.15.

2. Production of a resistive element is carried out by impregnating glass fiber with a conductor neck resin with 1 sealing between the rolls without heating, with a specific pressure of 1-5 kgf / cm. Depending on the required power of the electric heater

four

The compaction was carried out at a temperature of 145-165 ° C with a specific pressure of 5 t 40 kgf / cm for 15f2O min per 1 mm of thickness. As a result, carbon black and graphite particles are compacted between themselves and their penetration between the fabric fibers. In this case, rigid structural bonds are formed, which provide in time uniform characteristics of the electric heater over the entire surface i. The proposed method is performed as follows.

1. In a known manner, for example, in a mixer and in ball mills, a conductor-resin based on the following components is prepared:

DOO v.ch.

on dry residues, 50 B. h. 90 century.h

izvodsh one-time, double or three-fold fabric check: one-time. its compacted contact pressure rolls. Impregnation with compaction is carried out on an impregnation mechanism according to the conditions given in the table. one.

Table l or 60 of the sum of i;: yxHx syutatum resin P-2M luiB lacquer IF) (or 10% of the sum of dry residues of resin R.2M and lacquer IF)

lootsloots

1SOO-18OO150О-1800

0, 470.5-0.6

90 16030 6O

150О-18ОО

0.55-0.65 25 - 40

3. A resistive element in the size of an electric heater is made of a fused conductive fabric. As t & podvodov use parallel to the surface of the strips of brass or copper mesh, pre-impregnated with the same conductor neck resin.

In order to improve the electrical characteristics, the resistive element is compacted. At the same time, several such elements on one gasket sheet are stirred between the iijpeeca slabs in the sludge. sequences:,.

-plate press;

-paper cushion (& 10-g12 mm);

Laying sheet of stainless steel (S 1, OT1,

Specific pressure, kgf / cm 5-rlO 10-20 30-40 With a specific pressure of more than 4O kgf / cm, there is an increase in the resistance of the active element that breaks the structure of the spruce in the spruce chains of chains, which leads to uniformity and in the pattern. Element 4. The resulting resistive elemental nzov lvruhgg on both sides by two or a few layers of fiberglass, aradv tapivo proantannogo epoksnavo-feaopvuyu euhushvm, for example, resin IF-ED. In a known manner, for example, a batch production of an eleETro-grouvat EL in accordance with the following mode is carried out: -that davlavia kgf / cm. - raising the temperature to 95 ± 1 ° С and extracting to mVB. - lifting tamparaty up to C and holding for 1 m 1 m thick extruded pressure lactobacilli. The use of a pradlagam method of manufacturing glass-plastic epe- riate heaters is ensured, as compared with isoscopy methods, the following characteristics: - h: the counter-movement and mosquito of an elactivator heater are stable in time;

-triacetate film;

-resistive element;

-triacetate film;

- laying sheet, etc. up to 8 times;

- paper pillow;

-plate press

The compaction is performed in the following modes:

- temperature plates press 1457lS5 ° C;

-the specific pressure is 5-40 kgf / cm

-time 15-20 minutes per 1 mm of thickness of the warmer layers, collected between; press press.

The dependence of the change in resistance on the value of specific pressure during compaction is presented in Table. 2

table 2

Claims (3)

Decrease in the resistance of the heating layer,% 10-20 2О-25 25-30 - the uniformity of the temperature field increases over the entire surface of the flat electron. The formula of the invention is 1. A method of manufacturing polymer-heated electroheating, for example fiberglass, in which your insulating substrate is wired: graphite-based graphite in a jjaseyrofflero synthetic resin and forms a resistive element by impregnating and sealing the wound layer with a seam layer, then vavos t va it isolative coating in pressed all layers, and the impregnation with. compaction and pressing are carried out at temperature and time conditions and pressures, corresponding to a synthetic resin resin, which is different in order to increase its stability. the bones of the electric parameters of the electric heater, the parade of vanaseviaam insulation coating, the resistive element are additionally compacted by the pressing modes of the electric heater in 1H; 2. The method according to claim 1, which differs (M, which, when used as a binder, phenolic-formaldehyde-hydromamopa, add-on control is carried out at a temperature of 145-165 ° C with a specific pressure of 5-40 kgf / cm for 1520 min wa 1 mm thick of the sinister word Sources of information accepted in VNEmann during examination: 1. Copyright of CX: SR No. 180270 ,, 05 В 3/34 1966. eight . 2. British patent hfe 860213, - () N. 1961. 3. Copyright certificate № 2O8145, "i- 05 3/29, 1967.