Intumescent flame retardants (IFR) are an excellent solution to the problem of easy combustion of polymers. Still, the negative effect of the addition of flame retardants is the decline of the mechanical properties of polymers. In this context, carbon nanotubes (CNTs) are modified with tannic acid (TA) and then wrapped on the surface of ammonium polyphosphate (APP) to construct a special intumescent flame retardant structure (CTAPP). The respective advantages of the three components in the structure are explained in detail, especially the role of CNTs with high thermal conductivity in the flame retardant system. Compared with pure natural rubber (NR), the peak heat release rate (PHRR), total heat release (THR), and total smoke production (TSP) of the composites proposed with special structural flame retardants are decreased by 68.4%, 64.3%, and 49.3%, respectively, while the limiting oxygen index (LOI) increased to 28.6%. The TA-modified CNTs wrapped on the surface of APP can effectively reduce the mechanical damage caused by the flame retardant to the polymer. To sum up, the flame retardant structure of TA-modified CNTs wrapped on APP can effectively enhance the flame retardant properties of the NR matrix and reduce the negative impact on mechanics caused by adding APP flame retardant.

Magnetic carbon nanomaterial (MCN) was prepared by hydrothermal method using microfluidic mixing of ferric tetroxide solution precursors, which was added into casting membrane solution, and magnetic polysulfone (PSF) composite membranes were prepared by phase inversion process after introducing an external magnetic field to treat the casting membrane solution. Microscope image depicts Fe 3 O 4 nanoparticles are uniformly loaded on carbon nanomaterials composed of graphene oxide and carbon nanotubes, and the MCN was obtained with less agglomeration, less Fe 2 O 3 impurities, and magnetization intensity of 53.17 emu/g, which is slightly lower than that of pure Fe 3 O 4 (68.72 emuÁg À1 ). Microscopic cross-sectional view of the membranes indicate the support pore structure still keep a finger-shaped pore structure but the surface roughness of composite membrane shows an increase in R a value compared with the pristine PSF (6.23 nm). The hydrophilicity of membranes show a marked improvement increased in contact angle (from 73.158 to 51.854 ), which effect the water flux (from 638.49 to 1089.81 LÁm À2 Áh À1 ) and permeability (from 1.42 to 2.57 μm 2 ), while the effective diameter of pore in membranes increase (from 1.3385 to 1.9078 μm) through bubble pressure method, and the rejection of bovine albumin decrease slightly (from 93.03% to 90.13%), but the values all reach over 90%, which show good permeate separation performance.

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Fe2O3-MgO/Al2O3 catalyst precursors were prepared by co-precipitation method for the growth of carbon nanotubes (CNT), and the materials were characterized by various means. The effects of reduction temperature on the...