The production line of rock wool composite board is a new type of construction material with high strength, light weight, heat insulation, durability and beautiful appearance, which is made of color-coated steel coiled and formed with strong binder on both sides of thicker inner core data. Degradation Function and Its Comments
There is no unified standard for testing the degradation function of biodegradable data. The methods adopted or prepared by ASTM can be used as the standard. The main methods for evaluating the degradation function of biodegradable data by biochemical and microbiological methods are as follows.
Soil burying method
There are two kinds of soil burial methods: outdoor soil burial method and indoor soil burial method. The microbial source is mainly the microbial community in soil. After a certain time, the samples are taken out to determine their weight loss, mechanical function changes, or the microbial invasion status in soil is determined by electron microscopy. The advantage is that it can reflect the biological differentiation function under natural environment conditions; the defect is that the experimental period is long, the experimental results vary according to the soil quality, and the repeatability is poor.
Quantitative method of Petit's incubator
Participate in the experimental samples and nutrient agar in the container, inoculate microorganisms for cultivation, after a certain time, analyze the weight loss of samples and some physical or chemical changes. The advantage is that it can be degraded quickly and the experimental results can be obtained in a short time with good repeatability and quantification. The defect is that it can not reflect the actual situation in nature.
When the buffer solution and the experimental sample are added in the container, the weight loss of the sample is analyzed, the growth of the mould is observed, and the changes of the physical or chemical functions of the sample are analyzed under the microscope. The advantage is that the experiment cycle is short, the repeatability is good, and the quantity is good. The defect is that it can not reflect the actual situation in nature.
Radioactive C14 tracer method
Using C14 labeled polymer products, carbon dioxide occurs under the effect of microorganisms, is absorbed by alkaline solution, the total amount of carbon dioxide is measured by titration, and then the amount of carbon dioxide in C14 is determined by radioactivity attenuation rate. The percentage of carbon dioxide in C14 is used to indicate the degree of microbial erosion. The advantage is that the experimental results are reliable and clear. The biodegradability test can detect the biodegradability of samples.
The above information is our biodegradable particle sorting release hope to help you with our website is: http://www.rsoau.com!