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棉保温产品由于价格低廉
棉保温产品由于价格低廉、导热系数小、容重轻、无腐蚀性，并具有较好的化学稳定性和吸声性能而在保温材料市场中占据重要的地位。近年来随着摆锤法等先进生产工艺的应用，岩棉产品的应用范围得到了进一步的拓展。
Cotton thermal insulation products occupy an important position in the market of thermal insulation materials due to their low price, small thermal conductivity, light bulk weight, non corrosivity, good chemical stability and sound absorption performance. In recent years, with the application of advanced production technology such as pendulum method, the application range of rock wool products has been further expanded.
尤其是《建筑设计防火规范》GB50016-2014发布后，绝大多数的建筑外保温都必须使用燃烧性能等级为A级的材料，岩棉材料成为首选。
In particular, after the release of code for fire protection design of buildings (GB 50016-2014), most of the external thermal insulation of buildings must use materials with combustion performance grade A, and rock wool materials become the first choice.
但长期以来，大家对建筑用岩棉板、岩棉条密度的要求存在严重误区，甚至我们的一些国家标准、行业标准及规范，都对岩棉密度提出错误的要求。影响了岩棉板、岩棉条综合性能的更好发挥。
However, for a long time, there have been serious misunderstandings on the density of rock wool board and rock wool sliver for construction. Even some of our national standards, industrial standards and specifications have put forward wrong requirements for rock wool density. It affects the comprehensive performance of rock wool board and rock wool sliver.
比如我们的一些标准规定岩棉板的密度要≥140公斤/立方米，岩棉条的密度要≥100公斤/立方米。
For example, some of our standards stipulate that the density of rock wool board should be more than or equal to 140 kg / m3, and the density of rock wool sliver should be more than or equal to 100 kg / m3.
而美国材料与试验协会的ASTM系列标准只规定了各种岩棉制品密度的最大值，也就是要≤某某公斤/立方米。
However, ASTM series standards of American Society for testing and materials only stipulate the maximum density of rock wool products, that is to say, it should be ≤ a certain kg / m3.
岩棉密度不是越大越好，比如以下实验中密度为80公斤/立方米左右的岩棉，其导热系数最小。岩棉条也是这样。
Rock wool density is not the greater the better. For example, in the following experiments, the rock wool with a density of about 80 kg / m3 has the smallest thermal conductivity. The same is true of rock wool sliver.
Cotton thermal insulation products occupy an important position in the market of thermal insulation materials due to their low price, small thermal conductivity, light bulk weight, non corrosivity, good chemical stability and sound absorption performance. In recent years, with the application of advanced production technology such as pendulum method, the application range of rock wool products has been further expanded.
尤其是《建筑设计防火规范》GB50016-2014发布后，绝大多数的建筑外保温都必须使用燃烧性能等级为A级的材料，岩棉材料成为首选。
In particular, after the release of code for fire protection design of buildings (GB 50016-2014), most of the external thermal insulation of buildings must use materials with combustion performance grade A, and rock wool materials become the first choice.
但长期以来，大家对建筑用岩棉板、岩棉条密度的要求存在严重误区，甚至我们的一些国家标准、行业标准及规范，都对岩棉密度提出错误的要求。影响了岩棉板、岩棉条综合性能的更好发挥。
However, for a long time, there have been serious misunderstandings on the density of rock wool board and rock wool sliver for construction. Even some of our national standards, industrial standards and specifications have put forward wrong requirements for rock wool density. It affects the comprehensive performance of rock wool board and rock wool sliver.
比如我们的一些标准规定岩棉板的密度要≥140公斤/立方米，岩棉条的密度要≥100公斤/立方米。
For example, some of our standards stipulate that the density of rock wool board should be more than or equal to 140 kg / m3, and the density of rock wool sliver should be more than or equal to 100 kg / m3.
而美国材料与试验协会的ASTM系列标准只规定了各种岩棉制品密度的最大值，也就是要≤某某公斤/立方米。
However, ASTM series standards of American Society for testing and materials only stipulate the maximum density of rock wool products, that is to say, it should be ≤ a certain kg / m3.
岩棉密度不是越大越好，比如以下实验中密度为80公斤/立方米左右的岩棉，其导热系数最小。岩棉条也是这样。
Rock wool density is not the greater the better. For example, in the following experiments, the rock wool with a density of about 80 kg / m3 has the smallest thermal conductivity. The same is true of rock wool sliver.
