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Resin pellets
POM/CNF composite materials
(under development)
Marketing Areas
- JAPAN
- EUROPE
- NORTH AMERICA
- CHINA
Light-weight and excellent reworkability* POM/CNF composite material
Our unique nanocomposite materials are composites of highly heat-resistant cellulose nanofiber (CNF) and various polyacetal (POM) resins. The materials excel in rigidity, dimensional stability, as well as sliding properties, and are expected to be applied to various sliding parts.
*As defined by UL 746A, regrind refers to a noncontaminated product or scrap from molding, such as sprues or runners that have been reclaimed by shredding, repalletizing, and granulating for use in-house.
CNF nanocomposite material composited with polyacetal (POM) has excellent rigidity, dimensional stability, sliding property, and creep property. It contributes to downsizing, thinning, and weight reduction of sliding parts in all parts of automobiles.
CNF nanocomposite material composited with polyacetal (POM) has excellent rigidity, dimensional stability, sliding property, and creep property. It contributes to downsizing, thinning, and weight reduction of sliding parts in all parts of automobiles.
High rigidity and good dimensional stability
In CNF nanocomposite materials, Asahi Kasei’s highly heat-resistant CNFs—which are based on cotton-linter constituents—are thoroughly dispersed within POM to form high-strength CNF networks throughout the resin, yielding superior rigidity and dimensional stability. POM/CNF composite materials, made with Asahi Kasei’s proprietary CNF dispersion technology, can retain their high rigidity even at high temperatures, where the rigidity of typical resins deteriorates.
Excellent sliding properties
POM has good mechanical properties, and exhibits superior friction and abrasion characteristics, making it a popular choice for fabricating gears and other sliding components. Also, CNFs are less likely than glass-fiber-reinforced materials to abrade metal partner surfaces in sliding components. Thus, POM/CNF composite materials combine good mechanical properties with improved sliding behavior.
Moreover, even when used as sliding components against surfaces of the same material—a situation that is commonly understood to yield poor performance—POM/CNF components have low friction and low abrasion and operate silently, as indicated in the figure below. For this reason, choosing POM/CNF materials not only downsizes product, but also allows multiple materials to be replaced by a single material.
Excellent high-temperature creep resistance
Asahi Kasei’s POM/CNF composite materials exhibit outstanding creep resistance, helping to meet the needs for component miniaturization and durability.
Downsizing and weight reduction of sliding parts
In recent years, the need for downsizing of parts has increased, and sliding parts that can withstand high loads are required. Glass fiber addition systems that achieve high strength and high rigidity are used in gear parts, etc., while wear particles containing fillers generated during sliding accelerate wear, making it difficult to achieve both rigidity and gear durability. Our polyacetal /CNF nanocomposite materials are high-strength and high-rigidity, while maintaining both rigidity and gear endurance while preventing wear of mating material components.
Mono-materialization of existing parts
Generally, sliding between the same material deteriorates sliding performance due to adhesive wear, so mechanical parts that require a high loads, made from a combination of other materials are used for sliding parts. Our polyacetal (POM)/CNF nanocomposites have excellent sliding properties between the same material even under greaseless conditions. This makes it easier to make sliding components into Mono-Material.
