Sumitomo chemical develops three new types of sumi

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Sumitomo chemical has developed three new sumikasuper LCP grade polymers

in order to better meet the changing needs of connector manufacturers, Sumitomo chemical has developed three new sumikasuper LCP grades, which are designed for high-speed connectors, including backplanes and automotive connectors for information and entertainment. Sumikasuper e6205l is a low dielectric constant polymer, which is very suitable for connectors that need higher data transmission speed. However, for connectors that require both low dielectric constant and low loss factor (low loss tangent), the unique LCP with different chemical structures is called sumikasuper sr1205l, which can better meet the requirements of connector geometry and design

for high-speed digital and wireless devices that need to consider electromagnetic interference (EMI), sumikasuper sz6911em has become a class III product due to the decline of signal quality, which is specially designed to provide EMI shielding. This grade combines ferromagnetic particles to convert the incident EM wave into heat energy, which can then be discharged through the thermal management system. Each new level benefits from Sumitomo chemical's expertise in polymer synthesis and compounding

lcp is a series of polymers that can produce thermoplastic parts with unique processing characteristics and extremely high performance. Therefore, they are usually used to replace metals, ceramics and other plastics because of their high heat resistance, excellent fluidity and the opportunity to reduce weight or sidewall allowance. Most commercial LCPs are aromatic polyesters, which are characterized by high thermal and mechanical properties, inherent flame retardancy, good weather resistance, excellent electrical properties, high stress cracking resistance and chemical inertness. This makes them ideal for electrical and electronic components (including optical fiber cables, PCBs, chip carriers, connectors (traditional, radio frequency (RF) and optical fiber) and other surface mount components), micro electro mechanical systems (MEMS), automotive applications (including ignition and transmission system components, lamp holders, pump components, coil forms and sensors), printers/copiers/fax components, cookers, high barrier/distilled processed food containers, And chemical treatment components (including pumps, instruments and valves)

usually processed by injection molding, LCP parts can be connected by thermoplastic welding technology, especially ultrasonic and laser welding. Due to the highly rigid structure of their molecular chains and their liquid crystal properties, they tend to be almost linear and occupy the stacking orientation, maintaining their order regardless of the solid or liquid phase, and LCP is highly anisotropic. Basically, the primary keys in LCP polymer chains are very attractive and difficult to destroy, while the secondary bonds between molecular chains are weak and easier to destroy

although most thermoplastics, especially those that make the marketing plan of tensile testing machines, fiber-reinforced thermoplastics show a certain degree of anisotropy after processing, the molding properties of LCPs may differ greatly in the direction of flow and transverse flow, which requires attention (and avoidance of challenges) when designing parts and tools for these polymers. The highly ordered and linear properties of these molecular chains make LCP self reinforcing in the flow direction and the rapid development of LED technology, and help to obtain excellent mechanical properties. However, the high anisotropy of LCP also means that the weld (where the flow front with different molecular orientations converges) is weak, so it is prone to warpage and thermal expansion differences. Therefore, LCP is usually reinforced with glass fiber and mineral filler, not to increase stiffness and strength, but to reduce anisotropy

warpage can be reduced by proper gate design in injection molding tools. Because of its high performance, the price of LCP is corresponding. However, due to their high melt flow rate, rapid solidification time and low thermal expansion in the flow direction, these polymers can form thin-walled parts with short molding cycle and provide high performance under low quality and low material use - all of which help to offset the high initial material cost. (they can also be molded into large thick wall parts, which are mainly used for the testing of mechanical properties such as tension, contraction, zigzag, shear, peel and tear of various metal, non-metal and composite materials.) LC strives to continue to increase its market share. The typical thermal stability enables processors to effectively reuse regrinding and recycling waste parts, which once again reduces material losses and reduces the cost of effective parts

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