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Name: Plastic PPS(polyphenylene sulfide) Flat Washers
Size:M2,M3,M4,M5,M6,M8,M10,M12
Material: PA66, PA+50%GF, PA+50%GF, PEEK, PVDF, PPS, PTFE, PP, PVC, PC.
PPS (polyphenylene sulfide) flat washers, high heat resistance (continuous use temperature up to 240 ℃), mechanical strength, rigidity, flame retardant, chemical resistance, electrical properties, and dimensional stability are excellent resins, wear-resistant, creep resistance, and flame retardant. Self-extinguishing, up to UL94V-0 grade. High temperature and high humidity still maintain good electrical properties. Good mobility, easy molding, molding almost no shrinkage holes and concave spots.
Thickness (0.25~50㎜)*Width 1200㎜*Length 1200㎜ Bar: ¢6~ ¢200㎜*1000㎜ Advantages: High mechanical strength. High mechanical strength, rigidity, outstanding low abrasion, better impact resistance, and chemical resistance than PSU and PE. Comply with OSU standard, very good resistance to oxidation and hydrolysis. Hydrolysis resistance can do repeated steam boiling. Fireproof and self-extinguishing plastic. Very high service temperature can still resist high corrosion at 220℃ and can be used briefly up to 260℃. Flexural strength at this temperature is similar to that of ABS at room humidity, low shrinkage, excellent dimensional and thermal stability, physiologically undoubted. Disadvantages: No abrasion resistance. Low elongation. Brittle/fracture in contact with polar solvents and alcohol. It is also prone to fracture when machining non-standardized parts, such as those containing stresses.
The maximum allowable working temperature in the air is very high can be 220 ℃ continuous work, short time up to 260 ℃, in a high-temperature environment to maintain high mechanical strength, stiffness and hardness, superior chemical corrosion and hydrolysis resistance (has not yet been found in the 200 ℃ below the solvent dissolution of polyphenylene sulfide, the inorganic acids, alkalis and salts resistance is very strong), excellent wear and friction, very good dimensional stability, excellent resistance to high-energy radiation, excellent dimensional stability. Excellent resistance to high energy radiation, good resistance to ultraviolet performance, its own flame retardant, and excellent electrical insulation.
Product Specification
(6) PPS non-standard customized plastic flat ring of good radiation resistance, radiation resistance to Gy 1 × 108, other engineering plastics can not be compared to the new material, is electronic, electrical, mechanical, instrumentation, aviation, aerospace, and other fields of radiation resistance only ideal excellent material gasket.
(7) PPS flat washers have good dimensional stability: molding shrinkage is very low, less than 0.0025%, the absorption rate is less than 0.05%, and the linear coefficient of thermal expansion is also small. In high temperature and high humidity conditions, they still show good dimensional stability. Therefore, they have a wide range of uses in machinery, the chemical industry, instruments, meters, aviation, aerospace, ships, and other aspects.
(8) PPS flat washers with excellent electrical properties: Polyphenylene sulfide still has excellent electrical properties at high temperatures, high humidity, and high-frequency conditions. Its volume resistivity is 1 × 1016Ω.cm, the surface resistivity is 1 × 1015Ω, and the electrical strength is> 18KV/mm.
(9) Polyphenylene sulfide has its own flame retardancy: its flame retardancy can reach the UL94-0 level, with an oxygen index (LOI) > 57%. The chemical structure of polyphenylene sulfide itself makes it have good incombustibility; there is no need to add flame retardant.
(10) and metal and non-metal bonding performance: PPS flat washers, especially on glass, aluminum, titanium, stainless steel, etc., have a very high bonding strength and adhesion to level 1. Good adhesion to glass, very suitable for chemical equipment lining seal.
(11) Good processing performance: PPS resin melt viscosity is low, good fluidity, and very easy to contact with the glass fiber wetting, so filler is easy to fill, with its preparation of glass fiber or inorganic filler reinforced injection molding grade granules, with high resistance to stretching, impact resistance, resistance to bending and ductility. Above its melting point can be uniformly formed in various specifications of PPS plastic flat washers.
Product Pictures
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