How do you test for burning cotton and linen?

 

1. Sample preparation:
First, select a sample of appropriate size from cotton and linen fabrics. Typically a long, narrow strip sample according to standards or requirements.
 

 

2. Sample fixation:
Fix the sample and hang it vertically on a vertical burning device to ensure that the sample hangs freely and there is a certain distance between the bottom and the open flame.

 

3. Ignition test:
Ignite the bottom end of the sample and let the open flame contact the sample. Note that the laboratory environment should be safe and operators should take appropriate protective measures.

 

4. Observe combustion characteristics:
Observe the combustion process of the sample, including burning speed, flame spread and any drippings. Record burning time, flame height, and other important observations.

 

5. Evaluation based on observation results:
Evaluate the burning performance of cotton and linen fabrics based on test results and specific standards. In general, shorter burning times, lower flame heights, less dripping, and less self-extinguishing flame spread are considered good.

 

It should be noted that combustion tests usually need to be conducted in professional laboratories or certification agencies to ensure the accuracy and reliability of test results. At the same time, it is crucial to use standardized test methods and equipment that meets the relevant standards.

 

Note that the purpose of burning tests is to evaluate the burning behavior and fire safety of a material to provide information about the fire risk of the material. In daily use, other factors (such as fire-resistant coatings or chemical treatments) should also be considered to ensure that the risk of fire is minimized.

 

Therefore, when testing the flammability of cotton and linen fabrics, it is recommended to seek the help of professional testing agencies or authoritative laboratories to ensure the accuracy and credibility of the test results.