Pressed Stainless Steel Sink is manufactured by a machine that presses a single sheet of stainless steel into a predetermined shape-resulting in a wide range of variants for shapes, lengths, and bowl configurations. It offers customers with durability, cost effectiveness, and best value for use free of trouble. Pressed Kitchen Sinks,Black Kitchen Sink,Pressed Stainless Kitchen Sinks,Pressed Kitchen Sink Guangdong Huayou Hardware Products Co.,Ltd , https://www.gdhuayouhardware.com
(2) The ordinary cable material is heat-resistant by various methods of modification:
1. The heat-resistant modified rubber material of rubber material has a small tolerance for increasing the working temperature due to its poor heat resistance. The ordinary rubber is filled with more heat stabilizer and cross-linking treatment to reach 90 ° C, so it cannot be called Heat resistant cables such as styrene butadiene rubber, neoprene, chlorosulfonated polyethylene, etc. Mainly used in rubber insulated mobile flexible wires, rubber insulated soft power cables and control cables.
However, the EPDM rubber can be modified to increase the temperature resistance level to 135 ° C, and has better insulation properties, so it has a good development prospect in rubber.
2. The modified ordinary PVC cable of PVC cable has a working temperature of 70 ° C. The high miscibility of PVC cable material makes it possible to modify it. The use of a large amount of heat stabilizer can make PVC The heat resistance rises from 70 ° C to 90 ° C or 105 ° C, thus greatly expanding the applicability of the old-fashioned material of PVC. Perhaps this is one of the reasons why the PVC cable is prosperous?
90 °C PVC cable material is commonly used in XLPE cable sheathing, mainly used for power, control and electrical equipment cables. Due to the modification of PVC, the PVC cable material that can be eliminated will continue to be used in the sheath. Quite a long time.
The main component of the polyvinyl chloride dingqing composite is PVC, so it has the same modification properties as the PVC dingqing composite cable and the PVC insulated cable.
3. The modified polyethylene material of the polyethylene cable has good plasticity, but the filling property is poor, so the heat stabilizer temperature cannot be filled by the method of heating the stabilizer. The polyethylene cable can be used to increase the operating temperature to 90 ° C by DCP dry chemical crosslinking and silane warm water crosslinking, the former for medium and high voltage power cables and the latter for low voltage cables.
However, another cross-linking method, radiation cross-linking modification, can greatly increase the working temperature of polyolefin (mainly polyethylene). Irradiated insulating materials can be used according to different conditions, and the temperature can reach 105. °C, 125 ° C, 135 ° C, 150 ° C, abroad can be increased to 180 ° C. It is mainly converted into stable bond energy by high-energy electrons, and its molecular structure is strengthened to thermal stability. At the same time, it is equipped with appropriate heat stabilizers, and is classified into different heat-resistant grades according to the energy level and the efficiency of the heat stabilizer.
Irradiation cross-linking industry commonly used processing equipment is an electron accelerator, which is to increase the energy of the electron beam to achieve the purpose of cross-linking polyolefin materials. The energy level of the accelerator is 1.0~3MeV. Irradiation cross-linking also crosslinks materials such as rubber, PVC and fluoroplastics.
Irradiation cross-linked polyolefin wire and cable is mainly used for heat-resistant building lines, automobile lines, aviation wires, locomotive wire and motor electrical wiring.
The heat-resistant cable is a medium-temperature cable with a certain heat resistance and can adapt to a certain temperature environment. The most widely used is that in the power transmission cable, it is of great significance to increase the current carrying capacity of the cable and reduce the weight and cross section of the cable while ensuring the insulation performance.
Beijing Kexun Wire & Cable Factory specializes in producing all kinds of wire and cable.
Wire and cable heat resistance can be divided into several types
Wire and cable heat-resistant type can be divided into several (1) heat-resistant materials, wire and cable, heat-resistant materials, wire and cable, insulation and sheathing materials, the bulk resin has heat resistance, the main varieties are: polyurethane (up to 155 ° C ) Insulation or sheathing material of polyester (up to 135 ° C), polyvinylidene fluoride (150 ° C) and nylon (up to 115 ° C). Commonly used in communications, automotive, electrical, construction and other industries.