SU942191A1 - Method of manufacturing ribbed serarators - Google Patents

Description

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FIELD OF THE INVENTION The invention relates to the electrical industry R can be used in the production of ribbed separators for lead-acid accumulators.

There is a known method for preparing ribbed separators by compacting fibrous material, for example, from: polyester yarns, at temperatures and conditions close to the critical one. 1. Q

With such parameters, the manufacturing process of separators is unstable and even the optimal sealing parameters, the basic properties of the separators, such as maximum diameter of 15 lane, electropnection resistance, and porosity, vary from 25 to 200%. With deviations from the optimal parameters, bupet procuring or glazing separator surfaces, which will lead to a dramatic reduction in its porosity, or the formation of large pores with a diameter of 20–60 μm with insufficient mechanical strength. This method also does not allow one to learn fin-type separators with a small pore diameter (not more than 5 microns).

The closest to the proposed by the thematic essence and the cognizable result. is a method of making ribbed separators, which includes obtaining a tape from an unvulcanized rubber compound, shaping the ribs on one side and tightly connecting it to the other side with paper and wet curing C2.

However, this method does not prevent deformation and damage to the re-rim side of the rubber band and, therefore, does not preserve the shape and shape. the dimensions of the ribs, since the non-pressed material, tightly connected to the rubber band on the smooth side, only holds the dimensions of this side. Therefore, obtaining a separator with exact dimensions is possible by making them larger in thickness, & then, after vulcanization of the rubber, bringing it to the ground with a scrub of polishing to the required thickness. The disadvantages of the method are also the impossibility of producing ribbed separator hoods on both sides and uneven seperators in thickness. Great difficulties arise in the manufacture of separators with an edge height greater than its thickness. The purpose of the invention is to reduce the thickness, increase the height of the ribs, eliminate deformation and warping and ensure uniformity of nausea. This goal is achieved by the fact that in the method of manufacturing rib separators, calibrated tape should be shrunk, heated, the ribbed side should be covered with stretch stiff paper, whereby the tape is shrunk for 1-5 minutes, before being molded, the tape is preheated to 30-C, the heating is carried out: by irradiating the surface of the tape, the paper for coating the edge of the side is pre-moistened, and the tight connection of the paper with the tape and the formation of the fins are carried out at a temperature of 2 ~ 40 ° C and a pressure of 1-10 kg / cm ° at a speed of 1-30 m / min The drawing shows the flow chart, the progress of the manufacture of separators before the vulcanization operation. The method is as follows. The heated unvulcanized ratite mixture is fed to the calender 1. Between the rollers 2, 3 and 4 of the calender, a gap is established allowing () to remove the calibrated rubber tape of a strictly defined thickness. In order to obtain a regina tape of a certain width, set the knives 5 to cut the edges. In order to ensure a uniform thickness, the belt is fed to the conveyor-6, which feeds it within 1-5 minutes to the pressing mechanism 7. Skorts. 1) the conveyor agrees with the calender. When the belt S leaves the conveyor belt, it becomes thicker and has a cross sectional area equal to the cross sectional area of the ribbed ribbon when it is cut off before and after forming. From the conveyor belt, the belt is fed to the rotary rollers 9 c of the compressing mechanism 7. The surface of the two watts of one or the other should have grooves around the circumference to form ribs on the surface of the belt of the new mixture. The linear speed of the rolls 9 and 10 should be the same and consistent with the speed of the tape, one of the rolls should be movable and pressed to the other by the mechanism 11 with a strictly defined adjustable force. To ensure uniform thickness, improve the forming conditions of the Heber and ensure good adhesion of the ribbon paper, it was heated to 30-6 ° C in an unstressed condition by the heater 12. Along with the rubber band passing between the rolls 9 and III, paper tapes with p5 bars 13 are fed and 14. The paper fed to the side to be profiled is moistened on the mechanism 15 prior to contact with the tape. Moisturizing ensures its stretching when the fins are formed without breaking, the density of the connection with the rubber band and the best moisture retention, and therefore in the next porosity in the finished product . The molding of a rubber band was carried out at a pressure of 1-10 kg / cm, temperature 2 -40 ° C and speed of 130 m / min. Next, the molded tape, tightly connected to the paper on both sides, is fed to the pulling roller 16, which eliminates the possible slippage of papers relative to the rolls 9 and 10 and further to the conveyor 17, from which the tape is wound into a roll, cut into sheets and sent to vulcanization. Ribbed tape, vulcanized in a frame paper sheath, the rigidity of which provides a tight connection of the rim with tape and paper strength. Example. The manufacture of separators with a thickness of mm and a thickness of 0.6 mm separator with ribs on one side. Take reetnovu mixture composition, parts by weight; Synthetic rubber cisnzoprene 7O Synthetic rubber butadiene-styrene 15-ZO Sulfur35 Dnphenylguanidine1.2 Para4nm2.0 Silica gel with 73% moisture 272 Heated to the temperature passed through the rolls of calender n generate bandwidth O, 80 mm thick, 32O mm thick Then the tape is transported for 1.5 minutes to the pressing mechanism. Before pressing, the tape with a thickness of 0.85 mm and a width of 330 mm is subjected to surface heating. The distance from the preheater to the surface of the tape should be 8 mm, and the rate of ovification of the tape is 4 m / min. These ratios provide heating of the ribbon ao 40C. Next, the tape is fed to the rolls, of which you can see grooves and the other is welded. At the same time with the tape, rolls 13 and 14 are fed to the rolls. One strut of the tape is connected to paper like a TOJ winding with a tire of 85 mm and the side to be. profiling, combined with condenser type paper, 30 microns thick. Before feeding to the condenser roller

Electrical resistance (equivalent layer) Breaking stress at break Chemical resistance (mass loss in%)

Wettability, in%, after 2 hours of impregnation after 24 hours of impregnation

Maximum pore diameter, microns

Elasticity (resistance to bending around the roller)

Claims (6)

Porosity,% Obtained by the proposed method, the separators technical characteristics significantly exceed the separators obtained by a known method. 1. The method of manufacturing ribbed separators, including the training of calibrated tape from unvulcanized rubber mixture, the formation of ribs on one side and the tight connection of its other side with paper and wet vulcanization, so that that, in order to reduce the thickness, increase the height of the ribs, eliminate deflection and warping and ensure evenness in thickness, the calibrated tape is subjected to shrinkage, heating, and the ribbed side is covered with stretch stiff paper. 2. The method according to p. 1, about tl and h and y and with the fact that the tape is subjected to ycatuce for 1-5 minutes Magu moistened $ sweat. The molding process should be carried out at 2 ° -30 ° C with a pressure of 3-5 kg / cm. Then, the tape is fed to the conveyor, then for cutting, stacking is put in piles, then they are fed to the vulcanizer in a wet saturated steam environment, washing, drying, removing the paper and reacting to separate separators. The table shows the main characteristics of the separator. Properties O, 33-O, 49 .26.4 2.4 91.0 98.4. Oh 68-1 o 18-20 56-60 3. A method according to claim I, characterized in that the tape is pre-heated to 30--60 ° C prior to molding. 4. The method according to It. It is so that it is heated by irradiation, the surface of the tape, 5. The method according to claim I, about tl and h and y - y and with the fact that the paper to cover the ribbed side of the preliminary HsnoT 6. The method according to claim I, about the t and the fact that the tight connection of paper with tape and the formation of the ribs are performed at a temperature of 20-40 C and a pressure of 1-10 kg / cm with skorospey IZO m / min Sources of information taken into account in the examination 1.US Patent Nf 381957, cl. 136-146, 1974. 2. Pat. USA No. 2274260, cl. 264-175, 1942.