Tribological (Low Friction) Phenolic Molding Compounds

Products

High heat resistant plastic with excellent Tribological performance and non-melt property

It is a phenolic molding compound with low friction coefficient and low wear due to the high ratio of graphite.
It has been used in automotive applications due to its high heat resistance and and excellent chemical resistance. It is also available for various complex shapes by injection molding.

Features

Phenolic molding compounds can contain more than 50% of inorganic fillers such as graphite, giving them the properties of these fillers.

Positioning of material

This material melts during molding and becomes a cured product through a crosslinking reaction. After curing, it no longer melts.
This material offers heat resistance and various shape availability due to molding.

Applications

Below applications are required sliding and heat resistance properties.

Vane type small pump
Plane bearing for electric water pump
Plane bearing for water pump of dish washing machine
Seal ring
Thrust washer
Gas meter (Valve and Distribution chamber)

Technical data

Properties

Item	Unit	Phenolic molding compounds				Sintered carbon	PEEK Thermo- plastic
		PM-5750	PM-5740	PM-5780	PM-5640
		Low friction Low wear	Low friction	Low friction Low warpage	Low friction High strength
Specific gravity	-	1.67	1.65	1.61	1.78	1.77	1.45
CTE	ppm/K	20	22	25	21	23	45
Flxeural strength	MPa	90	90	90	180	75	230
Flxeural modulus	GPa	13.5	13	12	15	15	11.5
Compressive strength	MPa	160	160	150	300	175	170
Frictional coefficient (0.6Mpa, 5m/s)	-	0.10	0.12	0.12	0.20	0.14	0.23
Comparative abrasion quantity	mm/ (MPa・m/s・hr)	2×10^-3	3.5×10^-3	5×10^-3	-	-	-
Tg	°C	200<	200<	200<	200<	-	<150

Notes

The above data is for reference only. For phenolic molding compouds, test piecies are prepared by injection molding, and tested according to ISO standards after annealing.
Abrasion tests are tested with S45C.

Sliding performance

Metal ring (S45C) is rotated on the plastic plate, loading with surface pressure.
Under high PV condition, PEEK got melted and sticked, and frictional resistance increased.
Tribological Phenolic Molding Compounds can keep excellent friction & stable μ also under high PV condition.