New product standard for fire-retardant coatings for building wood structure
Recently, the Ministry of housing and housing issued the notice of the Ministry of housing and urban and rural construction on Issuing the formulation and revision plan for engineering construction standards in 2016, and published the 2016 plan for engineering construction standard revision.
The standard "fire-retardant paint for building wood structure" was officially approved by the Ministry of residential construction, which is declared by many parties. The standard specifies the terms and definitions, classification, marking, requirements, test methods and inspection rules of products, which will be applied to all kinds of wood structure building fire retardant coatings.
It is reported that, in order to better regulate the market, improve product quality, safeguard the people's life and property safety, timber saving and development center, Northeast Forestry University, Chinese wood protection industry association to the Ministry of housing to declare a "product standard" for building fire retardant coating wood structure, designed to regulate the production of enterprises, the protection of China's ancient wooden building safety and to promote the healthy development of the whole wood industry. The standard specifies the terms and definitions, classification, marking, requirements, test methods and inspection rules of products, which will be applied to all kinds of wood structure building fire retardant coatings.
Guizhou anticorrosive wood reminds wood as building material, it has the characteristics of light weight, high strength and good processability. And wood structure building is favored by people because of its advantages of safety, heat preservation, energy saving, environmental protection, comfort, flexible structure and so on. According to the relevant data, more than 80% of the ancient Chinese architecture are wood structures. Today, wooden structures are still very popular.
According to the statistics of the China timber Protection Industry Association, the construction of the national wood structure project has exceeded 3 million square meters in the last year. However, the fire-retardant grade of wood is low and the fire hazard is great. It is necessary to carry out the necessary flame retardant treatment.
According to the introduction, there are two main methods of flame retardant treatment of modern wood structure building
One is to use wood with fire retardant wood structure pressure impregnation, the wood to the fire resistance rating of certain (technical specification, GB/T29407-2012 flame retardant wood and flame retardant wood-based panel production by wood saving development center and the Northeast Forestry University jointly drafted in July 1, 2013 has been officially promulgated).
Another way is particularly suitable for all kinds of wooden structure of cultural relics and has built a wooden structure, on the basis of the structure and the overall appearance of the destruction of buildings, the fire retardant coatings for wood surface populations, in case of fire when the paint coating foam form a uniform honeycomb carbon layer, in a certain period of time。 Blocking the spread of fire, fire fighting for their valuable time。 In recent years, many problems have also been found in the application of flame-retardant coatings。 Due to the lack of corresponding product standards, the quality of products produced by enterprises is uneven, and cracks and shedding are easy to occur in use, resulting in the wood structure can not reach the effect of delayed combustion。