Thermoplastic super engineering plastic
boasting excellent heat resistance, dimensional stability, and chemical resistance
TORELINA™ PPS resin is an engineering plastic that realizes high dimensional stability based on PPS resin, which has excellent properties such as heat resistance and chemical resistance. We engage in integrated manufacturing from base polymers to compounds, offering a wide variety of grades in both cross-linked and linear types.
Features
Heat Resistance
It has extremely excellent long-term heat resistance and can withstand continuous use at 200 to 240°C. It can also withstand high temperatures of 260°C or higher for a short period of time.
Mechanical Strength
With a melting point of approximately 280°C, a glass transition temperature of approximately 90°C, and a heat deflection temperature of 260 to 270°C, it has high strength even at high temperatures and excellent creep resistance.
Hot Water Resistance
It has a low water absorption rate and maintains high strength even in hot water.
Chemical Resistance
It has high resistance to acids, alkalis, and various organic solvents, ranking second only to fluororesins.
Flammability
It exhibits high flammability even without the addition of flame retardants.
Electrical Properties
It exhibits excellent electrical properties even under high humidity and high temperature conditions.
Dimensional Stability
Because it excels in heat resistance, water resistance, and chemical resistance, it exhibits high dimensional stability under various environments.
Moldability
Because of its excellent flowability, injection molding of precision molded parts is also possible.
Reasons to Choose
- High heat resistance suitable for automotive components, etc.
- Water resistance and chemical resistance enabling use in a variety of environments
- High flammability surpassing other resins
High heat resistance suitable for automotive components, etc.
One of the excellent features of TORELINA™ PPS resin is its heat resistance. With a melting point of
278°C and a heat deflection temperature of 260°C or higher, it is a material that is less likely to
deform due to high temperatures compared to other resins.
In addition, its continuous use temperature* is 200 to 240°C, and it can withstand long-term
heating well. Resins that exceed 200°C in both short-term and long-term heat resistance are extremely
limited.
For this reason, TORELINA™ is suitable for automotive engine peripheral components, industrial machinery
components, and electronic device components used in high-temperature environments.
*Continuous use temperature: The upper temperature limit at which a substance can maintain 50% or more of
its strength after being heat-treated for a long time (40,000 hours).
Comparison of heat resistance of various resins
Glass transition temperatures and melting points of various resins
| Material | Crystallization properties | Glass transition temperature (°C) | Melting point (°C) |
|---|---|---|---|
| TORELINA™ PPS | Crystalline | 90 | 278 |
| Liquid Crystal Polymer (LCP) | - | 280～370 | |
| Polyetheretherketone (PEEK) | 143 | 334 | |
| Nylon 66 | 50 | 260 | |
| Polybutylene terephthalate (PBT) | 22 | 224 | |
| Polyamide-imide (PAI) | Amorphous | 280 | - |
| Polyethersulfone (PES) | 225 | - | |
| Polyetherimide (PEI) | 217 | - | |
| Polysulfone (PSF) | 190 | - | |
| Polycarbonate (PC) | 150 | - |
Water resistance and chemical resistance enabling use in a variety of environments
It is also a feature of TORELINA™ PPS resin that it has excellent water resistance and chemical
resistance.
PPS resin is highly crystalline and does not have a chemical structure with high affinity for water. For
this reason, TORELINA™ PPS resin has a low water absorption rate compared to other resins, and features a
low likelihood of dimensional changes or strength degradation due to water absorption.
It also exhibits high durability against hot water and various solvents. Therefore, it is also optimal for
automotive cooling pump cases and tubes, piping and fittings for industrial water applications, etc.
Comparison of water absorption between TORELINA™ and various resins
Chemical resistance of TORELINA™
High flammability surpassing other resins
The limiting oxygen index when used in glass fiber-reinforced PPS is 47, and the fact that it has high flammability compared to other resins is also an advantage of TORELINA™ PPS resin. Therefore, it can also be utilized for housings and connectors of electronic and electrical equipment, and components in the engine room of automobiles.
Glass transition temperatures and melting points of various resins
| Material | Limiting oxygen index (%) | UL flammability class |
|---|---|---|
| Glass fiber-reinforced PPS | 47 | V-0 |
| Polyetherimide (PEI) | 47 | V-0 |
| Polyamide-imide (PAI) | 43 | V-0 |
| Glass fiber-reinforced Polyethersulfone (PES) | 41 | V-0 |
| Polyetheretherketone (PEEK) | 35 | V-0 |
| Polysulfone (PSF) | 30 | V-2～V-0 |
| Glass fiber-reinforced Nylon 66 | 24 | H-B |
| Polybutylene terephthalate (PBT) | 21 | H-B |
| Polyacetal (POM) | 16 | H-B |
For other details on product features and information on molding, please see Technical Information.
View Technical InformationApplications
TORELINA™ PPS resin is used in various applications such as piping for the water supply and water heater market, and power semiconductor cases.
Components for the water supply and water heater market
Components that come into direct contact with drinking water, such as faucets, showers, piping/pipes, fittings, and pumps, have been increasingly replaced by plastics from metals in recent years. What is mainly used at this time is PPS resin, which excels in water resistance, heat resistance, chemical resistance, and processability. Toray's PPS resin "TORELINA™" is also utilized in these water-related components. We offer a rich lineup of grades that comply with various water-related standards for housing equipment, water heaters, EcoCute, toilets, bathrooms, kitchens, etc., and can meet various required characteristics.
Power Module (Power Semiconductor)
Industrial and automotive power modules are increasingly required to have high heat resistance, dimensional stability, and high CTI as voltages become higher. Generally, tracking resistance and flammability are a trade-off, but TORELINA™ realizes "CTI Rank 0 (CTI 600V or higher) and high flammability" through our proprietary NANOALLOY™ technology. It is being adopted globally.
Water Pump
Due to its excellent properties, TORELINA™ is an optimal material for water pumps. In particular, the PPS high impact grade demonstrates its true value in components that require chemical resistance and coolant resistance. It is the optimal material combining impact resistance and hot water resistance for water pump components that require chemical resistance and coolant resistance. This contributes to improving the performance and ensuring the reliability of water pumps. It is also the optimal material for cooling components for applications where demand is expected to expand in the future, such as for automobiles and data servers.
Bus Bar Insulation Components
Due to its excellent properties, TORELINA™ is an optimal material for bus bar insulation components. The TORELINA™ PPS high heat cycle grade exhibits its excellent properties in bus bar insulation components that require heat cycle resistance / heat shock resistance, thin-wall flowability, and heat resistance. In particular, it is an especially optimal material for the construction method of inserting and coating metal to increase the reliability of insulation, and Toray has a large lineup of heat cycle grades for bus bar applications. Toray proposes optimal solutions according to customer needs, contributing to improving the quality and ensuring the reliability of bus bar insulation components.
Toray's Proposals
Introducing technologies, methods, and products
that support advanced manufacturing
Toray's Proposals
Development of optimal PBT and PPS resins for laser weldability to improve quality and shorten manufacturing periods of high-performance device components
Mobility xEV High-performance devices Downsizing Laser weldability
Toray's Proposals
PPS resin with excellent tracking resistance that shortens creepage distance under high voltage
Mobility xEV Downsizing Space saving Power equipment Insulation measures Electric railway High-speed railway
Featured grades
PPS resin TORELINA™ for water applications
BA604WR、BA673MT/BA673MWR、BA670R63
You can also view solutions that address product development challenges by field.
View Solutions
For those looking for the optimal material for their developed products
By application, feature, and physical properties
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Achieving thermal expansion equivalent to metal! Ultra-dimensional stable PPS resin that extremely suppresses dimensional changes due to environmental temperature changes
In metal replacement for the purpose of weight reduction and post-processing elimination, there are cases where replacement with resin is difficult due to the difference in thermal expansion. Toray proposes a new PPS resin with thermal expansion equivalent to aluminum and copper through formulation design technology.
Enabling downsizing and space saving of electrical components Achieving tracking resistance "CTI Rank 0" of PPS resin
The key to downsizing and space saving of electrical components, which are increasing mainly due to the electrification of automobiles, is the tracking resistance properties of insulating materials. In PPS resin, which has been widely adopted in automotive electrical components, etc., we introduce the innovative new material that achieved CTI Rank 0 (600V), which was previously said to be impossible.
Enabling piping integration, etc. through metal replacement Challenging the limits! Ultra-flexible PPS with the world's highest level of softness
The "ultra-flexible PPS", which has the world's highest level of softness among the PPS resins newly developed by Toray, is compatible with all molding methods, and holds various possibilities that can provide new value to customers, such as metal replacement of piping, simplification of assembly processes, reduction of the number of parts, and replacement of materials such as fluororesins and thermosetting rubbers.
Enabling short delivery times and low costs for prototyping parts for functional confirmation and final parts! World's first! High-performance polymer particulates "TOREMIL® PPS" for 3D printers and their application development
We introduce the high-performance polymer particulates "TOREMIL® PPS" developed and optimized for 3D printers (powder bed fusion method). It is mainly used for prototyping for functional confirmation of high-mix low-volume production and final parts.
