PPS Machined Parts

Polyphenylene sulfide-PPS

PPS plastic (polyphenylene sulfide) is a comprehensive performance of thermoplastic special engineering plastics, its outstanding features are high temperature resistance, corrosion resistance and superior mechanical properties. Electrical insulation (especially high-frequency insulation) is excellent, white, hard and brittle, fall on the ground with metal ringing, light transmission rate is second only to plexiglass, coloring resistance to water, good chemical stability. Excellent flame retardant, non-combustible plastic. General strength, rigidity is very good, but brittle, easy to produce stress cracking; not resistant to benzene, gasoline and other organic solvents; long-term use of the temperature up to 260 degrees, in the air or nitrogen at 400 degrees to remain stable. Through the addition of glass fibers or other reinforcing materials modified, the impact strength can be greatly improved, heat resistance and other mechanical properties have also been improved, the density increased to 1.6-1.9, molding shrinkage is small to 0.15-0.25%, suitable for making heat-resistant parts, insulating parts and chemical instruments, optical instruments and other parts.

Polyphenylene sulfide (PPS), is a new type of high-performance thermoplastic resin, with high mechanical strength, high temperature resistance, chemical resistance, flame retardant, good thermal stability, excellent electrical properties, etc.,, the heat distortion temperature is generally greater than 260 degrees, chemical resistance is second only to polytetrafluoroethylene, mobility is second only to nylon, is one of the best heat-resistant varieties of engineering plastics, modified varieties of which it will become the sixth largest engineering materials. 

Product features:

1. It can be used for special engineering Plastics Injection Molding processing, precision processing, without special processing equipment.

2. Good flame retardant, compared with other plastics, it belongs to high flame retardant materials in plastics.

3. Excellent thermal properties, short-term resistance of 260 ℃, and can be used for a long time at 200 ~ 240 ℃.

4. Good chemical resistance, its chemical stability is second only to F4, excellent radiation resistance.

Shortcomings: the price is too high, in the high temperature resistant materials in the bottom of the price, but much higher than the general engineering plastics; poor toughness, brittle sex; medium viscosity is not stable. Pure PPS is seldom used because of its brittle performance, and the application of PPS is mostly for its modified performance varieties.

PPS has excellent heat resistance, its melting point is more than 280 ℃, the heat distortion temperature under 1.8MPa load is more than 260 ℃, the long-term use of the temperature of 220-240 ℃. PPS resin itself has a very good flame retardant, without the need to add flame retardant to achieve the UL94-0 grade and 5-V (no drop), and the amount of smoke in the combustion process is very low. The mechanical strength of pure PPS resin is not considered to be high, after reinforced by glass fiber or carbon fiber or mineral filling, its strength and rigidity increase exponentially, and has excellent creep resistance and fatigue resistance. High surface hardness, Rockwell hardness>100HR, tensile strength>170MPa, bending strength>220MPa, notched impact strength>16MPa, bending modulus>3.5×104.

Suitable for: pumps, valves and compressors manufacturing, medical equipment, pharmaceutical manufacturing, aerospace, electrical and electronic products. Semiconductor manufacturing, petroleum development and processing.

Electronics: High-voltage components, housings, sockets, terminals on televisions and computers, starting coils and blades for electric motors, brush holders and rotor insulating parts, contact switches, relays, electric irons, hair dryers, lamp heads, heaters, class F films, etc.

Automotive industry: for exhaust recirculation valves and water pump impellers, and carburetors, exhaust devices, exhaust regulator valves, light reflectors, bearings, sensing parts, etc.

Mechanical industry: used as bearings, pumps, valves, pistons, precision gears, as well as photocopiers, cameras, computer parts, catheters, sprays, injector nozzles, instrumentation parts, etc.

Scope of application:

Electronics: high-voltage components, shells, sockets, terminals on TV sets and computers, starting coils and blades of electric motors, brush holders and rotor insulation parts, contact switches, relays, electric irons, hair dryers, lamps, heaters, Class F films, etc.

Automotive industry: for exhaust recirculation valves and water pump impellers, and carburetors, exhaust devices, exhaust regulator valves, light reflectors, bearings, sensing parts, etc.

Mechanical industry: used as bearings, pumps, valves, pistons, precision gears, as well as photocopiers, cameras, computer parts, catheters, sprays, nozzles, instrumentation parts, etc.

Chemical industry: used to make acid and alkali resistant valve pipes, fittings, valves, gaskets and submersible pumps or impellers and other corrosion-resistant parts.

Engineering plastics: to make automobile parts, anti-corrosion coatings, electrical Insulation Materials, etc.

Environmental protection field: PPS fiber filter media, used in smelting, chemical industry, building materials, thermal power, waste incinerators, coal-fired boilers and other industries in high-temperature harsh working conditions, is a high-quality and efficient high-temperature resistant filter media.

Tableware field: used for making chopsticks, spoons, bowls and plates and other tableware.