Method for identifying the quality of polyurethane insulation board
With the rapid development of the construction industry, the research and development of polyurethane insulation panels is booming. With its superior performance, it has become the leader of similar products. All performance indicators meet or exceed national standards. But the same product has different production methods, raw material ratios, and technical levels. , resulting in differences in the quality of polyurethane insulation boards. As a consumer, what methods should you learn to distinguish between good and bad?
(1) Whether there is a qualified national inspection report. For example, the inspection report issued by the National Institute of Quality Supervision and Inspection of Fireproof Building Materials has nine main inspection items, including a conclusion report and sample product inspection instructions. This is good and the quality is guaranteed.
(2) Look at the product description in the remarks column of the inspection report to see if there is a statement that "the fire surface of the sample can be any side of the material". If it is, it means that the insulation board is tested for homogeneous core material according to the requirements of the national standard.
(3) Check the bulk density of the polyurethane insulation board for inspection. Testing the bulk density of the insulation board is the top priority to verify whether the material is qualified. The bulk density of the insulation board is an important indicator to determine the thermal conductivity, strength and dimensional stability of the insulation board.
Now, there are many unscrupulous merchants who realize their own profits in the market, so the quality of polyurethane insulation boards is uneven. In order for everyone to buy good products in the process of purchasing products, please also take a look at our identification methods to prevent being deceived by manufacturers who only aim for profit.
