Properties of UHMWPE sheet

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2014-12-26

Properties of UHMWPE sheet:
1, a low coefficient of friction
UHMWPE is very resistant, and low coefficient of friction, good self-lubricating, is an ideal bearing bushings, slider, lining materials.
Use UHMWPE as friction parts of the device, in addition to improve wear life, it can also receive energy-saving effect.
2, good chemical resistance
Ultra-high molecular weight polyethylene has good resistance to chemical corrosion properties, in addition to concentrated acid, concentrated sulfuric acid, it will not corrode at all lye, acid, and may be at a temperature (80oC of concentrated acid
Used, in <20% of acid, <75% sulfuric acid is stable, its water, liquid detergent is also very stable. )
However, ultra-high molecular weight polyethylene material in an aromatic or material compounds (especially at higher temperature condition) can easily swell, therefore, when applied to special attention.
3, low water absorption
UHMWPE water absorption is very low, it is almost non-absorbent, does not swell in water, much less absorbent than nylon.
4, the thermal properties
Determined by ASTM (load 4.6kg / cm2) method, heat distortion temperature of 85oC, at a smaller load, temperature up to 90oC, in exceptional circumstances, allowing the use at higher temperatures,
Because UHMWPE is a material of excellent toughness, so its performance is very excellent in the low resistance, low temperature at -269oC, still has some ductility, but no signs of
5, the electrical properties of
UHMWPE over a wide temperature range, has very excellent electrical properties, its volume of 10-18CM, the breakdown voltage of 50KV / mm, a dielectric constant of 2.3. In a wide temperature and
Frequency range, its electrical properties change little. In the heat temperature range, it is suitable for use as structural materials in electrical engineering and mill material.
6, non-toxic
UHMWPE tasteless, non-toxic, odorless, non-corrosive itself, through physiological and physiological adaptation, the US Food and Drug Administration (FDA) and the US Department of Agriculture (USDA) to allow
It is used in contact with food and medicine applications.
It is these characteristics, in particular abrasion resistance, impact resistance, self-lubricating properties, in engineering plastics are the best.

 

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