The popularity of rubber and plastic insulation materials in the market is self-evident, and many friends have understood. As you may already know, the grades of rubber and plastic are divided into B1 and B2. But have you ever heard of grade 0 rubber? What exactly is the concept of this "level 0"? What is the difference between it and B1 rubber? Next, let me explain the difference between the two.
What is Class 0 Rubber and Plastics Standard?
Class 0 is the UK standard for building fire protection cases, and to achieve this standard, two important UK fire performance test requirements must be passed:
1. BS476 Part 7 standard for testing flame propagation speed. According to the flame propagation from slow to fast, this standard divides the combustion performance of materials into four grades: class 1 to class 4;
2. Test the bs476 part 61989 standard for uneven combustion heat release. This test is primarily measured by a composite index that characterizes the time and temperature changes at the time of combustion.
If and only if the material is in the fire test, according to the above test standards, the flame propagation velocity test reaches class 1 and the comprehensive index of the combustion heat release level test is less than or equal to 12, it can be said that the fire safety performance reaches class 0.
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The difference between grade 0 rubber and plastic board and B1 grade rubber and plastic board
1. Combustion performance
The so-called fire rating of insulation materials is actually the difference in combustion performance. Class 0 rubber and plastic panels have a very low smoke density, which can effectively prevent smoke generation in the event of a fire and improve safety. The B1 grade rubber and plastic board has a higher oxygen index, which means that it has better flame retardant performance and can maintain its structural and functional integrity at lower temperatures or in a flame environment.
2. Implement the standard requirements
Friends who know rubber and plastic know that rubber and plastic standards are exported to Europe and need to meet the standards of various countries. And grade 0 is actually the implementation of British standards. There are more B1 test items in the national standard. The experiments of B1 and Level 0 judgments are completely different, so there is no distinction between high and low. Level B1 tests have more items such as combustion rate, flue gas generation and toxicity. Although the British standard fire "grade zero" has high test requirements, it does not have requirements for smoke and toxicity. Therefore, we can't completely judge that grade 0 is necessarily better than grade B1 rubber and plastics. It's just that the standards are different, the test content is different, and the focus is different.
3. **Different
Generally speaking, the ** of grade 0 rubber and plastic is higher than that of grade B1. Some imported brands have more grade 0 rubber and plastic. In China, the demand for B1 grade rubber and plastic is relatively large, and the demand for rubber and plastic is relatively low.
4. Different applications
Class 0 rubber and plastic is used in relatively demanding laboratories, workshops and other places. B1 level is widely used, such as schools, hospitals, shopping malls and other public places.
The above is the content of Ruiwo Building Materials for you to sort out the difference between grade 0 rubber and plastic board and B1 grade rubber and plastic board, if you want to know more, welcome to pay attention to consultation.