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  • 涂料

    Over the course of the history of “paint” (as with joint compounds), there have been thousands of producers of paint and even more formulations, each with several dozens of ingredients. Original paint formulations were based on readily available, natural plant-based oils, one or more organic solvent, emulsifiers, pigments and driers. Today most paint is “latex” or more accurately, water-based rather than oil-based, and the amount of VOCs (volatile organic content) has been drastically reduced for environmental reasons. While oil based paints have not completely gone away,now both attapulgite and silica to the oil base paint market, water based paints & coatings dominate all major architectural coatings markets. [查看全文]
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  • 在发酵过程中溶解氧进行控制的意义

    在反应器重氧参与菌体的生长,产物的行程和维持细胞的代谢。氧是难溶于水的气体,在室温机器常压条件下氧的溶解度仅为36mg/L,空气中氧的溶解度仅为8mg/L.当水中溶有糖或其他盐类时,氧的溶解度更低。以谷氨酸发酵,在发酵过程中溶解氧进行控制的意义为例,同化100g葡萄糖需耗氧41.4g,而培养基中溶解够菌体生产14s的消耗。因此足够的通风供氧对好氧氨基酸发酵非常关键。了解发酵过程中溶解氧和其他参数间的关系,可以通过官场发酵溶解氧的异常变化,及时发现生产可能出现的问题,如某些操作故障或事故,中间补料是否得当,污染杂菌等,以便尽早采取措施。 [查看全文]
  • 第47届中国国际制药机械博览会完美落幕

    2014年4月27日,为期4天的“第47届(2014春季)全国制药机械暨中国国际制药机械博览会”在武汉博览中心圆满落幕,本届展览会由中国制药装备行业协会主办,吸引了国内外众多制药企业参展。 [查看全文]
  • 恭贺五一

    在此佳节之际,谨代表浙江达丰轻工机械有限公司的全体员工,向所有的新老客户表示衷心的感谢,祝愿大家五一节快乐,心想事成,工作顺利,阖家欢乐! [查看全文]
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