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选择防水防尘透气产品时,先确定应用、设备或外壳所需的防护等级非常关键。

由于NEMA需要进行IP中不包含的额外测试,因此IP防护等级无法“转换”为NEMA等级。但是,NEMA防护等级可满足或超出特定IP代码的要求。

Materials Technology: IP Ratings — Ingress Protection Classification

This document explains the format and classification of Ingress Protection (IP) ratings, according to the IEC 60529 standards.

Materials Technology: UL 94 Standard for Flammability Testing

This document explains the Underwriters Laboratory standard for testing the flammability properties of plastic materials used for parts in devices and appliances.

Materials Technology: Water Entry Pressure Testing

Description of standard test used to measure a membrane's ability to stop aqueous flow, and diagram of the apparatus used for water entry pressure testing.

Materials Technology: Gurley Airflow Testing

Materials Technology: Gurley Airflow Testing

Technical Information, 177.98 KB

Description of standard test used to measure airflow of low flowing media, and diagram of the apparatus used for Gurley airflow testing.

Materials Technology: Venting With Hydrophobic vs. Oleophobic Membranes

The key to choosing the appropriate membrane technology for a given application is understanding the environmental conditions and the surface tension of the fluids that the vent will encounter.

Materials Technology: Resistance Testing

Materials Technology: Resistance Testing

Technical Information, 143.84 KB

Description of standard test used to measure resistance of high flowing media, and diagram of the apparatus used for resistance testing.

Materials Technology: Bond Strength Testing

Materials Technology: Bond Strength Testing

Technical Information, 185.79 KB

Description of standard test used to measure the force required to separate the layers of a laminate, with diagrams of possible outcomes when water entry pressure has been exceeded.

Materials Technology: Oil Repellency

Materials Technology: Oil Repellency

Technical Information, 210.82 KB

Description of GORE™ Oleophobic Membranes, oil repellancy testing, oil ratings, and surface tensions of typical fluids.

Materials Technology: Sealing GORE™ Membranes to Plastic Parts

A variety of methods can be used to seal GORE™ Membranes to plastic parts. This document describes two common methods: heat sealing, and ultrasonic welding.