The solvate morphology of the plexiglass sample after etching with a small amount of solvent and a large amount of solvent. Observed at 1000 times, the fracture of the trace solvent silver streak has obvious corrosion streaks, and the fracture morphology of a large amount of solvent silver streaks is disorderly interlaced. It can be seen that there is no solvent silver streak in the microscopic morphology of the bullseye silver, so the possibility of silver streaks due to solvent corrosion can be ruled out, and it is concluded that the silver streaks are caused by stress. Analysis of the cause of the silver streak, the silver streaks of the local stress concentration portholes are concentrated in the bend of the glass edge, which is the location where the porthole is the most susceptible to stress concentration. During the porthole forming process, attention should be paid to the annealing temperature and time to improve the annealing process to ensure that the forming stress at the bend after annealing is completely released, reducing stress concentration. The material itself has poor resistance to silver streaks. YB-2 non-oriented plexiglass has poor resistance to silver streaks. Failure analysis of aircraft porthole silver streak failure analysis and prevention of processing, assembly, and use are prone to silver streaks or microcracks. The anti-silver grain ability of oriented plexiglass is far superior to non-oriented plexiglass of the same material. Non-oriented plexiglass is no longer used in the transparent parts of modern aircraft, and the portholes can be replaced with oriented plexiglass during later aircraft overhaul. The environmental conditions caused by the aging deterioration of the porthole glass in the use environment are complicated. In addition, YB-2 is a plasticized methacrylate plastic. As the storage or use time is prolonged, it is easy to cause the aging of the material to greatly reduce the glass. Anti-silver. PVC Self-Repair High Speed Zipper Door
Zipper quick door
The curtain of the high-speed zipper door is made of 1.2MM PVC coating cloth which can be embedded into the window. The unique design of this zipper door makes it possible to provide efficient goods entrance and exit under the premise of minimizing heat loss, so as to maintain the original temperature conditions in the room. The high-speed zipper door can provide different opening and closing speeds. According to the different needs of customers to provide the best speed of adaptation. The high speed zipper door curtain section ensures the safety of equipment and personnel without any solid parts. The high speed zipper door has a self-repair function, which means that even if the curtain is derailed in the middle (e.g., hit by a forklift), The self-healing system will automatically guide the curtain rerail in the next loop.) We can do this in the event that the front or back of the door hits the curtain and derails.
The new zipper is professional for derailed repair zipper door, zipper head material nylon 66, with built-in steel wire rope and screws fixed curtain, under the impact of gravity can let the curtain out of the rapid and correct return to the track, and track teeth without damage, durable, improve the original zipper teeth easy to wear defects.
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