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New aging test chambers

22-04-2013 | news

In order to increase the service offer that ceis provides to its clients, we are glad to inform you about the recent purchase of two aging chambers for the assessment of plastic material performance vis-à-vis external agents. In addition to temperature, relative humidity and salt fog climate chambers, ceis widens its range of services with these chambers enabling to conduct artificial aging tests by UV radiation and xenon arc, offering the possibility of combining them with meteorological agents (rain, darkness, light cycles, etc). The purchase of these state-of-the-art chambers, compliant with standard series UNE-EN 7892, enables us to assess the performance of materials in their regular conditions of use, reproducing in the laboratory the conditions to which they will be subject throughout their working life. ceis provides its clients with the whole range of climatic and accelerated aging tests, as well as the assessment of the critical properties according to regulations, technical specifications or particular requirements. Accelerated aging by UV radiation and xenon arc aims to assess the performance of plastic materials, foam rubber and textiles vis-à-vis external agents. This type of aging is mentioned in over 80 European product standards, focusing on products such as the following: PVC piping systems, waterproofing sheets, PVC profiles, plastic covering for cables and pipes, retro reflective sheets for vertical signs, enclosures for low-voltage switchgear and controlgear, etc. The chambers have up to 45 testing posts, providing large versatility to conduct radiation, rain, temperature and humidity cycles. The evolution of material properties over time is one of the most important aspects involved in conformity assessment of products and materials. The properties that we can assess over time using accelerated aging processes are: Physical characteristics: Vicat softening temperature, density, flow index, etc. Mechanical characteristics: hardness, tensile, flexural and compressive strength, etc. Chemical characteristics: cross linking degree, oxidation induction time, carbon black content, variation in antioxidants, stabilizers and residual substances, etc. Optical characteristics: opacity, colour, retro reflection coefficient, chromatic coordinates, brightness, etc. Visual assessment: initiation of cracks, stains, deformations, etc. This way, ceis can detect unforeseen defects and find out material performance in extreme conditions, checking whether it complies with the specifications established in the different product standards or particular requirements.

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