Dynamic

Performance index of polyurethane products

发表时间:2022-07-15 访问量:1496

For all kinds of products in life, our feelings about them are intuitive, such as concepts such as hardness, elasticity, toughness, brittleness, etc. This kind of information obtained through intuitive feeling and perception is generally called qualitative judgment. Qualitative judgments are often vague, inaccurate, and inconvenient for comparison. Just like we know that iron is hard and steel is hard, so which one is harder, is there any other standard to measure the hardness of the two other than hitting each other? Is there a set of general standards to measure the properties of different materials, For ease of description and dissemination?


In fact, all industries have a set of mature standard measurement tests (line standards) for product performance in various fields. my country has also formulated standard tests for various indicators of various products to measure (national standard, GB). By comparing the performance values of various materials measured in standard tests, we can gain a clearer understanding of materials in life.


相关标签: