An onsite testing based on eight-site air sampling was carried out in an airlaid papermaking workshop in Tianjin, China. By theoretical calculation, super absorbent polymer (SAP) size and its existent state in indoo...An onsite testing based on eight-site air sampling was carried out in an airlaid papermaking workshop in Tianjin, China. By theoretical calculation, super absorbent polymer (SAP) size and its existent state in indoor static airflow were obtained. SAP content in the sampled air was tested through chemical analysis method and found to be 3.0-7.2 times that of the human health limit in production areas. The concentrations of total suspending particles (TSP) and respirable particles were achieved by weighing. Particles of the most concern differ for varied function areas. Particles smaller than 10μm are mostly produced in the main production process, and 73%-90% particles generated in packing areas are larger than 10μm. SAP raw material particles can easily changed to suspending form by inevitable extrusion and frication. Correlation between respirable particles and TSP agrees well with that in atmospheric environment.展开更多
Guangdong Chengming Chemical S&T Co.,Ltd.,a modern high-tech papermaking chemical enterprise,specializes in the production and sales as well as providing technical services.CM Chemical has two production bases.Fol...Guangdong Chengming Chemical S&T Co.,Ltd.,a modern high-tech papermaking chemical enterprise,specializes in the production and sales as well as providing technical services.CM Chemical has two production bases.Following are the history of our company:2003Dongguan Longteng Industrial Co.,Ltd.,the first chemical base completed in 2003 with annual capacity of 100,000t/year2013Nantong Tenglong Chemical Technology Co.,Ltd.,the second chemical base completed in 2013 with annual capacity of280,000t/year.展开更多
基金Supported by the Fund of Commission of Science Technology and Industry for National Defense (2001-949)and Province and University Cooperation Fund of Science and Technology Commission of Chongqing.
文摘An onsite testing based on eight-site air sampling was carried out in an airlaid papermaking workshop in Tianjin, China. By theoretical calculation, super absorbent polymer (SAP) size and its existent state in indoor static airflow were obtained. SAP content in the sampled air was tested through chemical analysis method and found to be 3.0-7.2 times that of the human health limit in production areas. The concentrations of total suspending particles (TSP) and respirable particles were achieved by weighing. Particles of the most concern differ for varied function areas. Particles smaller than 10μm are mostly produced in the main production process, and 73%-90% particles generated in packing areas are larger than 10μm. SAP raw material particles can easily changed to suspending form by inevitable extrusion and frication. Correlation between respirable particles and TSP agrees well with that in atmospheric environment.
文摘Guangdong Chengming Chemical S&T Co.,Ltd.,a modern high-tech papermaking chemical enterprise,specializes in the production and sales as well as providing technical services.CM Chemical has two production bases.Following are the history of our company:2003Dongguan Longteng Industrial Co.,Ltd.,the first chemical base completed in 2003 with annual capacity of 100,000t/year2013Nantong Tenglong Chemical Technology Co.,Ltd.,the second chemical base completed in 2013 with annual capacity of280,000t/year.