What should be considered in the design of a waterproof power cord?

I. Waterproof power cord should be considered in the design of the problem? 1, the choice of materials: the current waterproof power cord products are mainly used in the relatively harsh environment of the work to the scene and the open field. From the product safety performance considerations should be taken into account when the material impact resistance, static load strength, insulation properties, non-toxicity, anti-aging properties, corrosion resistance, flame retardant properties. (Non-toxic performance has been widely concerned, mainly because if the waterproof junction box products in the event of fire, combustion will not release toxic and harmful gases, generally in the fire often due to inhalation of large quantities of toxic gases and the majority of deaths. 2, structural design: should be considered waterproof power cord of the overall strength, aesthetics, ease of processing, easy to install and recyclable. Currently the international mainstream manufacturers of waterproof power cord products do not contain any metal parts, which can simplify the product recycling process. But now most domestic manufacturers choose different materials, materials, anti-glutinization performance is not good, generally in the installation of waterproof bearing nest is equipped with brass inserts in order to increase the installation strength, so that for the material recycling process will increase the time and cost. If the selection of regular manufacturers to provide high-performance indicators of raw materials can solve such problems. 3, wall thickness: generally in the design of products when considering the overall cost of the product should be as far as possible to meet the product impact resistance and anti-glutinization performance, try to reduce the wall thickness of the product, the international waterproofing in the design of the PVC and PA66 material product wall thickness is generally between 2, 5 ~ 3, 5, fiberglass-reinforced polyester general Is between 5 ~ 6, 5, die-casting aluminum material product wall thickness is generally between 2, 5 ~ 6. The wall thickness of the material should be designed to meet the installation requirements of most components and accessories. 4, the choice of sealing ring material: for waterproof products, commonly used sealing ring materials are: PUR, EPDM, Neoprene, Silicon, the choice of sealing ring should be taken into account when the temperature range, resistance to tension, expansion and contraction, hardness, density, compression, chemical resistance.

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