PPS RTP 1385 P-1 TFE 15
Use performance
Polyphenylene sulfide, all known poly (phenylene sulfide), the English name referred to as PPS (hereinafter referred to as polyphenylene sulfide or PPS), Polyphenylene sulfide,. PPS is a relatively simple molecular structure, the molecular main chain consists of a benzene ring and sulfur atoms are alternately arranged, a large number of benzene rings conferred PPS, a large number of the thioether bond and provide flexibility to rigid. Symmetrical molecular structure, ease of crystallization, Promise, good electrical properties, non-absorbent.
PPS outstanding performance: good heat resistance, can be used in the temperature range of 180 ~ 220 ℃; corrosion resistance close to PTFE; electrical performance; excellent mechanical properties; flame retardant properties.
The inadequacies of the PPS: The price is too high, belong to the low-cost high-temperature plastic, but much higher than the general engineering plastics; poor toughness, brittle; viscosity instability. The pure PPS performance brittle rarely used alone, the application of PPS and more varieties of its change performance. Specifically: 40% glass fiber-reinforced PPS (R-4), an inorganic filler PPS (R-8), carbon fiber-reinforced PPS (G-6).
Polyphenylene sulfide characteristic:
The general performance: PPS as an appearance of white, high crystallinity, a hard and brittle polymer, the relative density of the pure PPS is 1.3, but the modification increases. PPS Water absorption is very small, generally only about 0.03%. Of PPS good flame retardancy, the oxygen index is as high as 44% or more; compared with other plastics, it is a high flame retardant in plastics material (pure PVC oxygen index of 47%, the PSF for 30%, PA66 to 29%, MPPO for 28% and the PC is 25%).
Mechanical properties: The mechanical properties of the pure PPS is not high, particularly impact strength is relatively low. Reinforced by glass fiber, will greatly enhance the impact strength is increased to 76J / m, and increased 3 times by 27J / m; tensile strength 6MPa increased to 137MPa. The PPS high rigidity, rare in engineering plastics. The pure PPS flexural modulus up to 3.8GPa, the modification of the inorganic filler can be reached 12.6GPa, increased five times.
PPS under load resistance and creep resistance, high hardness; high abrasion resistance, only 0.04g of 1000 rpm, the amount of wear, after fill F4 and molybdenum disulfide will be further improved; PPS also has a certain self Run. The mechanical properties of the PPS is the temperature sensitivity can be small.
Thermal properties: PPS having excellent thermal properties can be resistant to 260 ° C for the short term, and long-term use can be used in the 200 ~ 240 ℃; quite its heat resistance and PI, after the F4 plastic, which in the thermosetting plastic is also rare .
Electrical properties: the electrical properties of PPS is very prominent, and its dielectric constant and dielectric loss tangent value is relatively low compared with other engineering plastics, and in a larger range of frequency, temperature and temperature changes; PPS of arc resistance, comparable with a thermosetting plastic. The PPS was commonly used in electrical insulating materials, the amount accounted for about 30%.
Environmental Performance: One of the biggest feature of the PPS good chemical resistance, its chemical stability performance after F4; PPS mostly acids, esters, ketones, aldehydes, phenols and aliphatic hydrocarbons, aromatic hydrocarbons, chlorinated hydrocarbons, etc., is stable, intolerance chlorinated biphenyls and oxidizing acids, oxidants, concentrated sulfuric acid, concentrated nitric acid, aqua regia, hydrogen peroxide and sodium hypochlorite. The radiation resistance of the PPS.
Applications:
The automotive industry: PPS used in the automotive industry accounted for about 45%, mainly for automotive functional parts; instead of metal production exhaust tube circulation valve and pump impeller, pneumatic signal mediation, etc..
Electronic appliances: PPS for the electrical and electronic industry accounted for 30%, it is suitable for the ambient temperature is higher than 200 ° C high temperature electrical components; shabu manufacturing point on the generator and engine electric shabu bracket, starter coil shield and leaves, etc.; on TV, can be used for high voltage shell and socket, terminal and terminal board; in the electronics industry, the manufacture of transformers, choke ring skeleton and shell of the relay, integrated circuit carrier; using high-frequency performance, manufacturing the H grade bobbin and trimmer capacitor.
Machinery Industry: for housing, structural parts, wear parts and sealing materials, concrete pumps, valves, bearings, bearing bracket, piston rings and gears, etc..
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Key Words:1385 P-1 TFE 15,PPS 1385 P-1 TFE 15,RTP 1385 P-1 TFE 15