The industrial standard for limit of harmful subst

2022-07-24
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The industrial standard of limit of harmful substances in building waterproof coating will be released soon. The industrial standard of limit of harmful substances in building waterproof coating will be released soon. On December 13, 2007, China paint information learned from the National Technical Committee for standardization of lightweight and decorative building materials that the industrial standard of limit of harmful substances in building waterproof coating has passed the review recently and has been submitted to the relevant competent departments for approval

The safety belt impact testing machine conforms to the following specifications:

relevant: the limit of harmful substances in building waterproof coating has passed the review

it is stipulated in the reviewed industrial standard limit of harmful substances in building waterproof coating that the standard is "applicable to auxiliary materials for building waterproof coating and waterproof materials". According to the content of harmful substances, the waterproof coating is divided into class A and class B: Class A is environmental protection waterproof coating, and class B is waterproof coating. The threshold to enter the market is the minimum requirement that waterproof coatings must meet. The standard is divided into three categories: water-based, reactive and solvent-based waterproof coatings according to the pull nature of the capital engine, which is indispensable for the rapid rise of any emerging industry of building waterproof coatings. The water-based and reactive waterproof coatings are divided into Grade A and grade B according to the content of harmful substances, and the solvent based waterproof coatings are only grade B. In the standard, the limits of volatile organic compounds, free formaldehyde, benzene, toluene, ethylbenzene and xylene, soluble heavy metals (lead, cadmium, chromium, mercury), phenol, anthracene, naphthalene, free TDI, etc. of Grade A and B of three types of waterproof coatings are specified respectively

it is reported that waterproof coating and waterproof coiled material are two kinds of waterproof materials with large production and wide use in waterproof engineering, which are widely used in roof, toilet, underground and other waterproof engineering. Over the past 10 years, with the rapid development of these high-tech industries, it has expanded to functional waterproof fields such as bridges, tunnels, subways, water conservancy, reservoirs and sewage treatment. Its excellent waterproof performance and easy construction are increasingly favored by the engineering community. However, some enterprises use tar and other toxic substances as solvents in the production of waterproof coatings, which endangers the health of production and construction personnel. In particular, the "non tar" and "green environmental protection" waterproof coatings currently sold on the market have no judgment standards and applicable measurement methods. Therefore, the industrial standard "limit of harmful substances in building waterproof coatings" passed this time will become the basis for regulating the market. In other words, in the future, waterproof coatings on the market will not be self styled as "green environmental protection products"

in order to formulate the industrial standard of the limit of harmful substances in building waterproof coatings, the relevant units responsible for drafting the standard have collected a wide range of different types of waterproof coatings from manufacturers and waterproof markets nationwide, and conducted three systematic experimental verifications to determine the technical indicators and applicable test methods in the industrial standard of the limit of harmful substances in building waterproof coatings

insiders believe that the formulation and implementation of the industrial standard "limit of harmful substances for building waterproof coatings" will play an important role in improving the quality of waterproof coatings, upgrading products, protecting the environment, protecting people's health, and ensuring the quality of waterproof projects

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