https://www.cpsc.gov/safety-education/safety-education-centers/drywall-information-center/where-has-problem-drywall-been-reported
https://www.buildinggreen.com/primer/synthetic-gypsum?
所以不是中国drywall用煤灰的问题,是工艺不过关吧。
米国的脱硫后生成CaSO4.
天朝的含有CS2 和OCS. 这两个东东可以和水反应生成H2S. H2S会腐蚀Copper.
https://www.cpsc.gov/safety-education/safety-education-centers/drywall-information-center/where-has-problem-drywall-been-reported
https://www.buildinggreen.com/primer/synthetic-gypsum?
所以不是中国drywall用煤灰的问题,是工艺不过关吧。
米国的脱硫后生成CaSO4.
天朝的含有CS2 和OCS. 这两个东东可以和水反应生成H2S. H2S会腐蚀Copper.