How is the abrasion resistance of a mobile phone film measured? What does 10,000 times mean?

A: The abrasion resistance is usually measured by a steel wool abrasion tester. A certain specification of steel wool (usually 0000#) is used to rub the film surface back and forth under a certain pressure (usually 1kg) until the oil-repellent layer fails or obvious scratches appear on the surface. The number of reciprocations is recorded. Reference standard: ① Ordinary tempered film: approximately 2,000 to 3,000 times; ② Mid-range membrane: approximately 5,000 times; ③ High-end membrane: Over 8,000 to 10,000 cycles. Woowhead Guanfudun has a wear resistance of 10,000 reciprocating times (self-test data under the standard test environment of the brand laboratory), which is at an excellent level among consumer-grade diaphragms. This means that the oleophobic layer and surface hardness are more durable, and it can still maintain good smoothness and anti-fingerprint effect after daily use for 6-12 months. The three-time strengthening of Nanshan high alumina glass is also the foundation of its high wear resistance. Note: The test conditions (steel wool specifications, pressure, speed) vary in different laboratories. The data provided is for reference only.