Abstract: Degradable hyperbranched epoxy resin and a preparation method thereof, wherein the preparation method comprises carrying out a reaction between a cyclotriazine compound and a carboxyl-sourced compound to prepare a carboxyl-terminated or hydroxy-terminated hyperbranched polymer; then reacting with epoxy chloropropane to obtain a degradable hyperbranched epoxy resin of which the molecular weight is about 1,900-22,000 g/mol. After the degradable hyperbranched epoxy resin is cured, a cyclotriazine structure can be completely degraded within 2 h in a phosphoric acid solution at the temperature of 80° C., thus realizing the recycle of the epoxy resin. The invention has simple process, and the product is degradable and has self-strengthening and self-toughening functions, and is expected to be used in the fields of strengthening and toughening of epoxy resins, solvent-free coatings etc.

Abstract: A microalgae culturing method by using a paper-based culture apparatus, includes: 1) designing the shape of a culture apparatus as a rectangle with circles distributed in its middle; 2) spraying and printing wax on a piece of filter paper; 3) heating such that the wax penetrates through the filter paper to obtain a paper culture apparatus, where a surface of the filter paper on which the wax is sprayed and printed is called a surface A while the other surface thereof is called a surface B; and 4) dropping a first agar aqueous solution onto the circles on the surface B of the paper culture apparatus obtained in the step 3), and dropping a second agar aqueous solution added with microalgae onto the surface A of the paper culture apparatus obtained in the step 3).

Abstract: Degradable sulfur-containing hyperbranched epoxy resin and a preparation method thereof. The preparation method comprises initiating a reaction of a mercaptocyclotriazine compound and a binary olefin by ultraviolet light to prepare a mercapto hyperbranched polymer; then reacting with glycidyl methacrylate to obtain a degradable sulfur-containing hyperbranched epoxy resin of which the molecular weight is about 3,000-35,400 g/mol. After the degradable sulfur-containing hyperbranched epoxy resin is cured, a cyclotriazine structure can be completely degraded within 1.5 h in a phosphoric acid solution at the temperature of 80 DEG C, thus realizing the recycle of the epoxy resin.

Abstract: A microalgae culturing method by using a paper-based culture apparatus, includes: 1) designing the shape of a culture apparatus as a rectangle with circles distributed in its middle; 2) spraying and printing wax on a piece of filter paper; 3) heating such that the wax penetrates through the filter paper to obtain a paper culture apparatus, where a surface of the filter paper on which the wax is sprayed and printed is called a surface A while the other surface thereof is called a surface B; and 4) dropping a first agar aqueous solution onto the circles on the surface B of the paper culture apparatus obtained in the step 3), and dropping a second agar aqueous solution added with microalgae onto the surface A of the paper culture apparatus obtained in the step 3).

Abstract: Degradable hyperbranched epoxy resin and a preparation method thereof, wherein the preparation method comprises carrying out a reaction between a cyclotriazine compound and a carboxyl-sourced compound to prepare a carboxyl-terminated or hydroxy-terminated hyperbranched polymer; then reacting with epoxy chloropropane to obtain a degradable hyperbranched epoxy resin of which the molecular weight is about 1,900-22,000 g/mol. After the degradable hyperbranched epoxy resin is cured, a cyclotriazine structure can be completely degraded within 2 h in a phosphoric acid solution at the temperature of 80 ° C., thus realizing the recycle of the epoxy resin. The invention has simple process, and the product is degradable and has self-strengthening and self-toughening functions, and is expected to be used in the fields of strengthening and toughening of epoxy resins, solvent-free coatings etc.

Abstract: Degradable sulfur-containing hyperbranched epoxy resin and a preparation method thereof. The preparation method comprises initiating a reaction of a mercaptocyclotriazine compound and a binary olefin by ultraviolet light to prepare a mercapto hyperbranched polymer; then reacting with glycidyl methacrylate to obtain a degradable sulfur-containing hyperbranched epoxy resin of which the molecular weight is about 3,000-35,400 g/mol. After the degradable sulfur-containing hyperbranched epoxy resin is cured, a cyclotriazine structure can be completely degraded within 1.5 h in a phosphoric acid solution at the temperature of 80 DEG C, thus realizing the recycle of the epoxy resin.

Abstract: The present invention belongs to the field of biological detection. Multi-line immunochromatographic test strip for semi-quantitative detection of aflatoxin B1 comprises a paperboard, wherein a water-absorbing pad, a detection pad, a gold-labeled pad and a sample pad are adhered sequentially on one surface of the paperboard from top to bottom, wherein each adjacent pads is overlapped and connected, the detection pad uses a nitrocellulose film as a backing pad, the nitrocellulose film is provided with a transverse control line, a test line I, a test line II and a test line III, wherein the control line is coated with a rabbit anti-mouse polyclonal antibody, and the test line I, test line II and test line III are coated with aflatoxin B1-bovine serum albumin conjugate (AFB1-BSA), respectively: and the gold-labeled pad is transversely coated with a nanogold-labeled anti-aflatoxin B1 monoclonal antibody.