Polyphenylene sulfide (PPS), known as polyphenylene sulfide, is referred to as PPS (hereinafter referred to as polyphenylene sulfide or PPS). The molecular structure of polyphenylene sulfide is relatively simple, the main chain of the molecule consists of alternating benzene rings and sulfur atoms, a large number of benzene rings give polyphenylene sulfide rigidity, and a large number of thioether bonds provide flexibility. PPS outstanding properties are: good heat resistance, can be used in the temperature range of 200-240 ℃; corrosion resistance close to PTFE; excellent electrical properties; excellent mechanical properties; good flame retardant properties; good dimensional stability of the product, available in a variety of processing and molding methods, and can be precision molding.
Pure PPS due to the performance of brittle and rarely used alone, the application of PPS is mostly its modified performance varieties. Specifically: glass fiber reinforced PPS, glass mineral fiber reinforced PPS, carbon fiber reinforced PPS, etc.
HONYPLAS®PPS (chemical name polyphenylene sulfide) semi-finished materials, including plates, bars and pipes, can be used for machining. PPS plastic is a semi-crystalline high-temperature thermoplastic. Due to its structural characteristics, PPS materials have excellent mechanical strength and chemical resistance, and can maintain material properties even at temperatures above 200°C. In addition to low water absorption, PPS plastic also has good dimensional stability and excellent electrical properties. PPS thermoplastics are very stable chemically, even at high temperatures. In the market, PPS suppliers usually provide PPS modified materials, such as PPS GF40 (40% glass fiber reinforced material).
HONYPLAS®PPS Polyphenylene sulfide (PPS) exhibits excellent overall properties in chemical and high temperature environments, including wear resistance, high load capacity and dimensional stability. In addition, PPS profiles dense, good hardness and excellent chemical resistance to corrosion in a variety of industrial equipment, such as industrial drying and food processing ovens, chemical equipment, mechanical bearings and electrical insulation systems, etc. PPS profiles can be used at 220 ℃ for a long time, has not been found below 200 ℃ can dissolve PPS solvent, so PPS even at high temperatures on inorganic acids, alkalis, salts and other corrosion resistance is quite good. PPS in the case of no added flame retardants, in the UL94 flammability test for V-0/5V, is a higher level.
HONYPLAS®PPS (chemical name polyphenylene sulfide) Feature
High purity
High crystallinity
Good electrical insulation
High mechanical strength
Excellent high temperature resistance
Excellent chemical resistance
Creep resistance
Excellent dimensional stability, even if temperature and humidity change drastically
General properties: PPS as a white appearance, high crystallinity, hard and brittle polymer, the relative density of pure PPS is 1.3, but modified well will increase.
PPS has a very small water absorption, generally only about 0.03%
PPS has good flame retardancy, its oxygen index up to 44% or more.
Mechanical properties: PPS mechanical properties are not high, especially the impact strength is relatively low, with glass fiber reinforced will significantly improve the impact strength, from 27J / m to 77J / m, an increase of 3 times, the tensile strength from 6Mpa to 137Mpa, doubled.
PPS rigidity is very high, rare in engineering plastics. Pure PPS bending modulus up to 3.8Gpa, inorganic filler modification can reach 12.6Gpa, an increase of 5 times as much.
PPS creep resistance under load, high hardness, good wear resistance, its wear at 1000 rpm is only 0.04g, filled with F4 and molybdenum disulfide will be further improved, PPS also has a certain degree of self-lubrication.
PPS mechanical properties of the temperature sensitivity can be small.
Thermal properties: PPS has excellent thermal properties, short-term resistance to 260 ℃, and can be used for a long time at 200 ℃ - 240 ℃, its heat resistance is comparable to PI, second only to F4 plastic, which is also rare in thermosetting plastics.
Electrical properties: PPS electrical properties are outstanding, compared with other engineering plastics, its dielectric constant and dielectric loss angle tangent values are relatively low, and in a wide range of frequencies, temperature machine temperature does not change much.
PPS good arc resistance, comparable to thermosetting plastics, PPS commonly used in electrical Insulation Materials, the amount can account for about 30%.
Environmental performance: one of the most important features of PPS is good chemical resistance, its chemical stability performance is second only to F4, PPS good radiation resistance.
The shapes of Polyphenylene Sulfide Plate Bar that HONY can provide include:
PPS bar
PPS sheet
PPS pipe
HONYPLAS®PPS (chemical name polyphenylene sulfide) Application
This product is widely used in the aerospace, chemical, electronic and electrical, mechanical, automotive and railroad industries, making high strength, high temperature resistance, insulation of a variety of high-performance requirements of the aviation industry with devices; making anti-corrosion devices, corrosion-resistant valves, insulation devices, etc.; making precision electrical connectors, high-strength shell, high-temperature contactors, etc.; making the use of harsh environment of motor parts, terminals; making high temperature resistance, size The production of carburetor, distributor, igniter, slider, brake system solenoid valve, gear, thermocouple, piston ring with high temperature resistance and precision requirements. Production of high-grade hot air blower, curling iron, perm, coffee pot. Suitable for secondary processing. Machinery: pump housing, pump wheel, valve, fan, flow meter parts, flange, universal head, etc. Automobile: ignition, clutch, transmission, gear box, bearing bracket, exhaust system parts. Household appliances: protective coatings and parts for hot air dryers, curling irons, dryers, perms, rice cookers, etc.
Automotive industry: PPS for the automotive industry accounted for about 45%, water pump impellers, pneumatic regulators, temperature sensors, carburetors, ignition, lamp holders, bearings, automotive generator coil bobbins and brackets, etc.;
Electrical and electronic: PPS for the electrical and electronic industry accounted for 30% of the engine and generator on the brush miniature electronic components package, edge connector, connector, IC socket, computer stereo printed circuit board, trimmer capacitors and so on.
Household appliances: PPS can replace metal, ceramics, etc., electric fans, microwave oven brackets, dryers, coffee castles, rice cookers, hot air dryers, perms, air conditioning compressors copiers, printers, electric kettles accessories parts, etc.
Machinery industry: for shell, structural parts, wear-resistant parts and sealing materials; pump body, pump housing, pump wheel, tile, gear, pulley, universal head, gasket flange counter, level, valve, bearing, bearing bracket, piston ring, gear
Techtron® PPS sheet, rod and tubing has the broadest resistance to chemicals of any advanced engineering plastic. They have no known solvents below 392°F (200°C) and are inert to steam, strong bases, fuels, and acids. Minimal moisture absorption and an extremely low coefficient of linear thermal expansion, along with stress-relieved manufacturing, make PPS ideal for close tolerance machined components. Techtron® PPS is ideal for structural applications in corrosive environments, or as an alternative to PEEK components operating at temperatures below 425°F.
Benefits of Techtron® PPS
Excellent chemical resistance
Maximum operating temperature 425°F.
Basically zero moisture absorption
Machines to tight tolerances
Excellent alternative to PEEK at lower temperatures
Techtron® PPS tubing is commonly used to make PPS retainer rings in CMP machines
Excellent strength and hardness
Very high rigidity
Resistance to chemicals and high heat deformation
High dimensional stability
Very good electrical insulation properties
High resistance to the effects of weather, near zero moisture absorption
High hydrolysis resistance in the case of non-reinforced types
Due to high strength and rigidity, PPS and Techtron® PPS sheet and rod are commonly used as components in equipment construction, pump parts, fan elements, impellers, valve balls/seats/seals and motor vehicle parts. PPS is many times used as an alternative to aluminum, steel, and other high-temperature thermoplastics used in forming large shaped parts.
Techtron® PPS
Product Overview
High maximum permissible operating temperature in air (220°C continuously, up to 260°C for short periods)
High mechanical strength, stiffness and creep resistance at higher temperatures
Excellent chemical and hydrolysis resistance
Excellent wear resistance
Good dimensional stability
Physiologically inert (suitable for food contact)
Excellent resistance to high energy radiation (gamma and X-rays)
Good UV resistance
Inherent low flammability
Good electrical insulation properties and dielectric properties
PPS (polyphenylene sulfide) products have the broadest chemical resistance of any advanced engineering plastic. Solvent-free solubility at temperatures below 200°C, inertness to vapors, strong bases, fuels and acids, minimal moisture absorption and very low linear coefficient of thermal expansion, and stress relief by Quadrant's proprietary process make these PPS products ideal for precision mechanical components. In addition, PPS products exhibit excellent electrical properties and inherent flame retardancy.
Bearing Grade Techtron® PPS
Product Details
This grade is a self-lubricating, carbon fiber-reinforced PPS produced by a molding process that provides a low coefficient of thermal expansion and unmatched chemical resistance. It is ideally suited for use as friction parts, or as a conductive material.
Application Examples
Liquid seal ring
This ring is used in centrifugal mining pumps and is machined from bearing grade Techtron PPS, which eliminates wear and corrosion problems and allows for closer operating clearances - reducing recirculation and increasing efficiency. (Previous Material: Bronze)
HPLC
This part is used in high pressure liquid chromatography analytical equipment and is machined from Techtron PPS profiles because of its chemical inertness. (Previous materials: polyetheretherketone, stainless steel, titanium)
Chip nesting kits (Nests)
Socket assemblies, used in high energy/high speed testing of semiconductor packages, are widely processed from Techtron PPS sheets. (Previous material: Vespel® PI)
Retaining Ring (Retaining Ring)
Retaining ring for fixing wafers, used in chemical-abrasive polishing equipment, machined from Techtron PPS.
Techtron® PSGF PPS
Techtron® PSGF Polyphenylene Sulfide PPS shapes are compression molded and glass filled, giving them extreme dimensional stability as well as improved chemical and corrosion resistance over unfilled PPS materials.
Techtron® PSBG PPS
Techtron® PSBG PPS compression molded shapes are internally lubricated and carbon fiber-reinforced, allowing them to exhibit excellent wear resistance, outstanding dimensional stability, and extreme chemical and corrosion resistance.
Techtron® HPV PPS
This internally lubricated, glass-fiber reinforced PPS bridges the gap in performance and price between standard and advanced engineering plastics, exhibiting excellent resistance to wear, hydrolysis, and chemicals, as well as great electrical insulation and low flammability.
Techtron® 1000 PPS
This PPS grade exhibits outstanding dimensional stability due to its minimal moisture absorption and low coefficient of linear thermal expansion, making the material easy to machine to close tolerances.
Techtron® HPV PPS FG
A reinforced, self-lubricating PPS material with a high limiting pressure velocity for superior wear resistance, as well as outstanding resistance to chemicals, hydrolysis, and flames.
Techtron® GF40 PPS
Techtron® GF40 is a 40% glass fiber reinforced grade of PPS that exhibits higher stiffness and creep resistance than other PPS grades. Because of its improved dimensional stability, this grade excels in structural applications involving a high static load, even for long periods of time and at elevated temperatures.
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