Application of corona treatment equipment in the h

2022-08-08
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Application of corona treatment equipment in dry compounding machine II

increase the film accumulation

under the action of high voltage electric field, oxygen in the air turns into ozone. Ozone is broken down into oxygen and new ecological oxygen atoms. New ecological oxygen is a kind of enhancer, which can oxidize the a-carbon atoms in polyethylene or polypropylene molecules to form carbonyl and hydroxyl groups. With this structure, the molecular product of the film increases, the surface tension increases, the affinity for adhesives increases, and the bonding fastness between composite films improves. In addition, the production of hydroxyl groups will lead to the production of new a-carbon atoms in the molecular chain and the emergence of active hydrogen. This active hydrogen energy reacts with the active group isocyanate (- NCO) in the polyester adhesive, forming a solid chemical bond between the bonded material and the adhesive, which further increases the bonding fastness. From the infrared light detection, it is found that there are carbonyl absorption peaks on the surface of the treated polyolefin film, which proves that the above chemical action is effective

common detection methods

1. Peel off the test with BOPP single-sided transparent tape, paste the BOPP single-sided tape on the surface of the film to be tested, press it, and then tear it apart. If the surface tension of the film meets the use requirements. Then the peeling is very hard and the sound is low; On the contrary, it is easy to peel off, and there is a "rustle" sound. 2. Use the dyne pen to test: when the film surface tension value meets the requirements, bopp3.8 xn/m, pet5.0x n/m, nylon: 5.2xn/m, the liquid mark is even at the place where the test stroke is passed, without breaking and shrinking. If one part shrinks and the other part does not shrink, it means that the treatment is not enough. It is worth mentioning that when testing pet and nylon, it is necessary to select a higher-level test pen. The common specifications of surface tension test pens are: 3.8x10-2n/m, 4.n/m, 4.2 x n/m, 4.4xn/m, 4.8xn/M (for measuring aluminum foil). 3. See table for self prepared surface tension test solution

the film after treatment is not suitable for graphene preparation and utilization technology; Large size silicon single crystal growth, wafer polishing, SOI wafer and sige/si epitaxial wafer preparation and processing technology; Large scale MOCVD key supporting materials, silicon substrate epitaxy and OLED lighting new material preparation technology; Large size GaAs substrate, polishing and epitaxial wafer, gaas/si material preparation technology; Infrared germanium single crystal, wide band gap single crystal and epitaxial material preparation technology; Third generation wide band gap semiconductor material preparation technology; The large-scale continuous process technology of semiconductor distillation and zone melting purification of high-purity metals gallium, indium, arsenic, germanium, phosphorus and cadmium has been stored for a long time, up to 7 days. The longer the time, the more obvious the decrease of surface tension. If it needs to be placed for a long time. When processing the film, the initial value of surface tension should be increased. (2--4) common faults and troubleshooting of XN/M

equipment

some faults sometimes occur during the use of ad80-2-10 corona treatment equipment. Including electrical failure and mechanical failure. Next, I will classify and analyze the problems I encounter in my actual work for reference

1. the equipment does not produce sparks, the positive pole on the impact frame is stuck, and the aluminum bar does not discharge. This kind of failure often occurs in rainy seasons. Due to the high indoor humidity, there is water on the discharge aluminum row on the impact frame and the insulator silicone rubber roller, resulting in the positive discharge and the aluminum row cannot discharge. The treatment method is: turn off the main power supply, and wipe all rollers (including traction rollers and insulating silicone rubber rollers) and discharge aluminum bars of the impact frame with a dry cloth. Heat treatment is carried out with an electric hair dryer. If there is no water, the discharge equipment can work normally. In case of the above situation, start the impact machine from small to large. At the same time, observe the spark condition. The normal spark is continuous without red spots

2. the discharge aluminum bar does not discharge, the voltage does not rise (refer to kV meter), and the current (a) indication is too large

cause:

① the processing equipment is connected in parallel, the diode is damaged, or connected in series, and the capacitor is damaged and broken down

② wrong wiring of high voltage transformer

③ the thyristor in the treatment equipment is damaged and punctured

④ the carbon brush of the high voltage transformer is not in good contact or there is oil on the slip ring

⑤ the overcurrent switch on the control panel is damaged

⑥ the triode on the circuit board is damaged and cannot play a big role

⑦ the winding of the high-voltage transformer is open circuit or the insulating insulator is damaged and punctured. ⑧ Leakage or breakdown occurs in the positive and negative wiring at the output end of the high-voltage transformer

countermeasures:

① measure the capacitance and resistance of the secondary tube, and replace it if it is damaged

② connect the wires correctly, with the green line in the middle and red lines on both sides

③ replace the thyristor tube

④ check the carbon brush, and grind it with 1000 # water-resistant sandpaper until it is clean

⑤ replace the overcurrent switch

⑥ replace the triode

⑦ carefully check the winding and replace the insulating insulator

⑧ replace the wiring of the same model and specification

⑨ replace the new AC contactor

(to be continued)

statement: 5 elder brother is not simply transplanting the offline business matching of the system to the online due to the influence of volume, application location, etc.

3) the section stress is very uneven

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