Introduction

SUMIKAEXCEL PES (Polyethersulfone) is a heat resistant amorphous resin that Sumitomo Chemical manufactures in Japan under license from Imperial Chemical Industries PLC (ICI). The molecular structure is shown in the figure below.

Figure 1-1-1 Chemical Structural Formula of PES

SUMIKAEXCEL PES is an amber-color transparent resin with heat resistance, creep resistance, dimensional stability, flame retardancy, and hot water resistance. It was developed as a molding material for various applications, including electronic components, such as relays and burn-in sockets; IC trays; printer and copier parts; medical equipment parts and dental equipment requiring sterilization; and pagers and films for LCD substrates.
Powder grades are also available that are widely used in applications such as agents for giving toughness to epoxy composite materials for aircraft applications, heat-resistant paints, adhesives, and flat membranes and hollow fiber membranes for medical and food products.

Figure 1-1-2 Photograph of SUMIKAEXCEL PES Moldings

SUMIPLOY is a high-performance, high-heat-resistant polymer alloy compound that incorporates technologies that we have cultivated and accumulated. It is mainly based on super engineering plastics such as SUMIKASUPER LCP, polyethersulfone, and polyetheretherketone.

SUMIPLOY E is a sliding material that is composed mainly of heat-resistant polyethersulfone (PES) and SUMIKASUPER E101, and has the best sliding characteristics (with low and stable friction coefficient in a dry state and with a high limit PV value) among the sliding materials that can be used for injection molding. It does not easily cause scratches to mating materials even on soft metals such as Stainless steel (SUS) or aluminum. SUMIPLOY S is a sliding material based on PES that has good sliding properties while maintaining the mechanical and thermal properties of PES. It is good for applications requiring a certain degree of mechanical strength under relatively mild sliding conditions (low PV value). SUMIPLOY K is a sliding material based on polyetheretherketone (PEEK). It provides good sliding properties while maintaining the original excellent chemical resistance, fatigue resistance, radiation resistance, and heat resistance of PEEK. It is good for use under harsh conditions such as high temperatures and high loads.

Light transmittance

It has an excellent level of light transmittance among heat-resistant engineering plastics.

Figure 1-1-3 Light Transmittance of SUMIKAEXCEL PES

Heat resistance

Figure 1-1-4 Continuous Service Temperature and DTUL (1.82MPa)

Features of SUMIKAEXCEL PES and SUMIPLOY

Table 1-1-1 Features of SUMIKAEXCEL PES and SUMIPLOY

SUMIKAEXCEL PES	SUMIPLOY
High heat resistance Long-term heat resistance (180 to 200°C) Heat water resistance High strength and impact resistance Creep resistance High dimensional accuracy Flame retardant Low smoke, low gas emission	High heat resistance High strength High rigidity High sliding property