Analyze The Quality Of Rubber Detection Problem
Rubber materials and products have strict quality requirements, such as tensile strength, elastic modulus, elongation, anti-aging. Rubber products for high precision field, these parameters are often very demanding.
Early Development of rubber on the establishment of a committee of rubber products, rubber responsible for research and development, academic, quality supervision work.
1 medium resistance weight gain experiment
Samples were taken from the finished product can be immersed in a selected one or more medium temperature after a certain time taken weighed infer the type of material the weight ratio of Hardness change rate of change.
Immersed in the oil such as 100 degrees for 24 hours, NBR, fluoro rubber, ECO, CR quality and hardness change ratio is small, and NR, EPDM, SBR weight more than doubled and a large change in hardness, apparent volume expansion.
2 hot air aging test
Samples were taken from the finished product, on the aging box aged for one day to observe the phenomenon of aging. Aging gradually warming can be graded. For example, 150 degrees under CR, NR, SBR will be brittle fracture, NBR EPDM as well as flexibility. Under ordinary NBR will rise to 180 degrees brittle fracture; and at 230 degrees HNBR also brittle fracture, fluorine rubber and silicone still have good flexibility.