Polypropylene Strip & Cylinder Brushes

The top quality polypropylene we use is a versatile filament for a wide variety of applications. It has excellent wet stiffness and flex fatigue resistance. It is resistant to most solvents, oils and chemicals and is especially good at resisting strong acids and bases. It may be attacked by oxidizing agents such as hydrogen peroxide, chlorinated solvents (such as 1,1,1-trichloroethane) and aromatic solvents (such as xylene). Polypropylene has good bend recovery, but will take a set more easily than other materials. This issue can usually be addressed with good brush design and reasonable care in handling and packaging.

Fiber Property Comparisons

Filament	*Melting Point (F)**	Tensile Modulus (kpsi)	Tensile Strength (kpsi)	Flicking Action	% Bend Recovery	Relative Abrasion Resistance
Nylon 6	410	480	53	Excellent	97	Excellent
Nylon 6.6	495	520	48	Excellent	97	Excellent
Nylon 6.12	410	480	42	Excellent	93	Excellent
Polypropylene	320	740	53	Good	75	Fair
Polyester	430	445	31	Excellent	92	Good

The above compares in a general way some of the properties of the synthetic filaments we most commonly use to aid in distinguishing between them when selecting the filament best suited for a particular application.