Static and Dynamic tensile test Lenpure Ozone Aging Test chamber
Static tensile test
The two ends of the specimen were clamped on the sample test fixture, setting an elongation stretch, is 20%. The fixture is mounted on the rotating sample holder, rotate speed of test specimen fixture is 1 r/min. Experiments were carried out with 40 ±2 ℃, ≦65%RH at a prescribed ozone concentration.
Dynamic tensile test
According to the standard, the specimen fixture can automatically stretch and reset the specimen, and the tensile frequency is 0.5 ±0.025 Hz, and the two ends of the specimen are clamped on the special fixture, so that the specimen is stretched from 0 to the maximum elongation. The fixture is mounted on the rotating sample rack, and the rotation speed of the sample rack is between 20-25 mm / s. At 40 ± 2 ℃,specified ozone concentration, the fixture cycle stretching and reset and rotate with the sample rack to carry out the test. Check the crack of the sample after the prescribed time.the general ozone concentration is 50 ±5) 10-8.
Reference test standard
ASTM D470 CROSSLINKED INSULATIONS AND JACKETS FOR WIRE AND CABLE
ASTM D518 RUBBER DETERIORATION—SURFACE CRACKING
ASTM D1149 RUBBER DETERIORATION—SURFACE OZONE CRACKING IN A CHAMBER
ASTM D1171 RUBBER DETERIORATION—SURFACE OZONE CRACKING OUTDOORS OR CHAMBER
ASTM D1352 OZONE—RESISTING BUTYL RUBBER INSULATION FOR WIRE AND CABLE
ASTM D3395 RUBBER DETERIORATION—DYNAMIC OZONE CRACKING IN A CHAMBER
ASTM D4575 RUBBER DETERIORATION REFERENCE AND ALTERNATIVE METHOD(S) FOR DETERMINING OZONE LEVEL IN LABORATORY TEST CHAMBERS, (METHOD A ONLY)
ISO 1431—1: 1989 RESISTANCE TO OZONE CRACKING — PART 1: STATIC STRAIN
ISO 1431—2: 1994 RESISTANCE TO OZONE CRACKING — PART 2: DYNAMIC STRAIN TEST
ISO 1431—3: 2000 RESISTANCE TO OZONE CRACKING — PART 3: REFERENCE AND ALTERNATIVE METHODS FOR
DIN 53509; DIN/EN 27326; ISO 10960; JIS K6259 etc.
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