Properties evaluated by UL include: Color Concentrates Components – Concentrates Outdoor suitability program for plastics UL A electrical and. Standards for. CTI/trackingUL A ASTM D IEC or equivalent standards. Animation: CTI / tracking. UL Performance Materials Electronics Brochure. Search. Standards for. Electric ignition source HWIUL A ASTM D or equivalent standards. UL Performance Materials Electronics Brochure. [PDF KB].
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The list of tests can be used to evaluate all types of chemistries; such 76a thermoplastic polymers, thermoset polymers, PA 6, PAPolycarbonates, ABS, Epoxy, Polyurethane, Polyesters, Polypropylene, and basically all types of polymeric materials.
To request a quote for this test or others Click Here. The preferred test sampling method is the Fixed Time Frame Method.
For UL B tests the general requirements are for thermal aging to 7466a started at four or more elevated temperatures. More common physical properties include tensile strength; flexural strength; tensile, izod or charpy impact; dielectric strength, and flammability.
Refer to UL A and B for more details. The most common minimum length of time for which the thermal aging is to be conducted is hours. Standards can be obtained from appropriate standards authorities. Test can be performed on test specimens which have undergone various pre-conditioning or even some length of thermal aging. You can unsubscribe anytime. There can be more than one Thermal Index for a material, each based on a different physical property.
Charles, MO Email Us. Thermal Index is an important property for materials that will be used in applications that must withstand significant spans of 746z at elevated temperatures – for example, outdoor applications and electronic components and housings. Specimens for testing are dependant upon the physical property or properties that are the test criteria.
UL Series Testing Third Party Laboratory Eltek International Labs
Charles, MO,http: Emails are serviced by Constant Contact. This usually means the test specimens are to be tested are to undergo some length of thermal aging prior to testing.
By submitting this form, you are consenting to receive marketing emails from: UL B suggests several methods for extrapolating the discrete data generated in testing to the appropriate time that defines the thermal index temperature, but, in general, kinetics equations 7446a employed to predict property maintenance over extended time at end use temperatures.
A control material, with demonstrated end use performance, may be used to enhance the reliability of the data analysis. Critical physical properties, and either multiple temperatures or multiple times a minimum of 4 temperatures or times must first be defined to satisfy the intended purpose of the testing. The test methods are the same as described in 476a A for the specific property. Aging ovens Physical property test equipment and fixtures.
UL 746 Series
Due to copyright restrictions, we are not able to provide copies of standards. The test samples are aged in hot air recirculating ovens.
This does not 7746a that all long term thermal aging projects can be completed within the minimum hour requirement; the length of time needed for completion is to be agreed upon by all parties involved. The other parts of this group are outside of the scope of testing conducted in our laboratories.
The samples are removed from the ovens after the appropriate time intervals, and the physical properties are determined. Subscribe to our YouTube Channel.
The Screening Test is very helpful in determining which may be the preferred sampling technique.