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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A control material, with demonstrated end use performance, may be used to enhance the reliability of the data analysis. The preferred test sampling method is the Fixed Time Frame Method. To request a quote for this test or others Click Here. Subscribe to our YouTube Channel.
jl Standards can be obtained from appropriate standards authorities. For UL B tests the general requirements are for thermal aging to be started at uo or more elevated temperatures. Specimens for testing are dependant upon the physical property or properties that are the test criteria. Thermal Index is an important property for materials that will be used in applications that must withstand significant spans of time at elevated temperatures – for example, outdoor applications and electronic components and housings.
UL Thermoplastics Testing Center – Comparative Tracking Index (CTI)
Emails are serviced by Constant Contact. Aging ovens Physical property test equipment and fixtures. By submitting this form, you are consenting to receive marketing emails from: There can be more than one Thermal Index for a material, each based on a different physical property. Charles, MO,http: Refer to UL A and B for more details.
More common physical properties include tensile strength; flexural strength; tensile, izod or charpy impact; dielectric strength, and flammability. The most common minimum length of time for which the thermal aging is to be conducted is hours. This does not mean that all long term thermal aging projects can be completed 7746a the minimum hour requirement; the length of time needed for completion is to be agreed upon by all parties involved.
Tests Covered by UL 1950, Annex
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 are employed to predict property maintenance over extended time at end use temperatures. Test can be performed on test specimens which have undergone various pre-conditioning or even some length of thermal aging. The test samples are aged in hot air recirculating ovens. Critical physical properties, and either multiple temperatures or multiple times a minimum of 4 temperatures or times must first 74a defined to satisfy the intended purpose of the testing.
This usually means the test specimens are to be tested are to undergo some length of thermal aging prior to testing. You can unsubscribe anytime.
UL Series Testing Third Party Laboratory Eltek International Labs
The Screening Test is very helpful in determining which may be the preferred 746s technique. The samples are removed from the ovens after the appropriate time intervals, and the physical properties are determined.
Due to copyright restrictions, we are not able to provide copies of standards. The test methods are the same as described in UL A for the specific property.
Charles, MO Email Us. The list of tests can be used to evaluate all types of chemistries; such as thermoplastic polymers, thermoset polymers, PA 6, PAPolycarbonates, ABS, Epoxy, Polyurethane, Polyesters, Polypropylene, and basically all types of polymeric materials. The other parts of this group are outside of the hl of testing conducted in our laboratories.