Using ammonium ceric nitrate and N,N’ methylene bis acrylamide as an initiator and cross linkage agent respectively, a super absorbent was prepared by graft polymerization of acrylamide on starch at the presence of c...Using ammonium ceric nitrate and N,N’ methylene bis acrylamide as an initiator and cross linkage agent respectively, a super absorbent was prepared by graft polymerization of acrylamide on starch at the presence of clay suspension, followed by hydrolyzing. The water absorbency of the sample is 4 000(g H 2O/g dry sample). The influences of the kind of clay, content of clay, cross linkage agent on absorbent properties are discussed in this paper. The results show that clay powder, as a kind of functional filler, enhances comprehensive absorbent property of the composites.展开更多
The wollastonite pulverized activated by supersonic speed airflow substitutes for white carbon as a strengthening agent to rubber.The microstructures on surface of such developed wollastonite powder and microstructure...The wollastonite pulverized activated by supersonic speed airflow substitutes for white carbon as a strengthening agent to rubber.The microstructures on surface of such developed wollastonite powder and microstructures on interface of rubber/wollastonite composite material have been researched by scanning electron microscope and infrared absorption spectroscopy.The mechanism of mechanicaochemical activation on wollastonite and crosslinking mechanism on inerface of rubber/wollastonite composite material have been revealed by the results of research.展开更多
文摘Using ammonium ceric nitrate and N,N’ methylene bis acrylamide as an initiator and cross linkage agent respectively, a super absorbent was prepared by graft polymerization of acrylamide on starch at the presence of clay suspension, followed by hydrolyzing. The water absorbency of the sample is 4 000(g H 2O/g dry sample). The influences of the kind of clay, content of clay, cross linkage agent on absorbent properties are discussed in this paper. The results show that clay powder, as a kind of functional filler, enhances comprehensive absorbent property of the composites.
文摘The wollastonite pulverized activated by supersonic speed airflow substitutes for white carbon as a strengthening agent to rubber.The microstructures on surface of such developed wollastonite powder and microstructures on interface of rubber/wollastonite composite material have been researched by scanning electron microscope and infrared absorption spectroscopy.The mechanism of mechanicaochemical activation on wollastonite and crosslinking mechanism on inerface of rubber/wollastonite composite material have been revealed by the results of research.
