Abstract: The present application provides a modified EVOH resin, which is obtained by that EVOH resin is blended with a hyperbranched polymer during an extrusion and granulation step and is modified by the hyperbranched polymer; wherein, the hyperbranched polymer is obtained by reacting a hybrid compound containing boron, silicon or titanium with a small organic molecule containing hydroxyl group. The modified EVOH resin can not only increase the branching degree of the EVOH resin and increase the radiation crosslinking frequency of the EVOH resin, but also effectively reduce the amount of boron-containing compound added and significantly improve the forming processing performance and heat resistance without changing the original preparation process.

Abstract: A foldable table includes a support assembly, a tabletop assembly, a rotating assembly and a buffer member. The tabletop assembly is rotatably connected to the support assembly through the rotating assembly and is rotatable between a use position and a storage position. One end of the buffer member is connected to the support assembly, and the other end of the buffer member is connected to the tabletop assembly. When the tabletop assembly rotates from the use position to the storage position, the buffer member generates a resistance opposite to a rotation direction of the tabletop assembly, and a magnitude of the resistance is less than a force driving the rotation of the tabletop assembly. Through the arrangement of the above structure, when folding the foldable table of the present invention, it can not only ensure the integrity of its own structure, but also prevent accidental injury to the user.

Abstract: The present invention relates to the technical field of lithium batteries, and in particular, to a lithium battery separator and a lithium battery. The separator comprises a block polymer, the porosity of the separator is p, the mass percentage of the block polymer relative to the separator is w, and the relationship between the porosity p of the separator and the relative mass percentage w of the block polymer satisfies that (1?w)/3<p<25%. According to the lithium battery separator of the present invention, the block polymer is added, such that the separator also achieves the functions of the separator itself under the condition of a relatively small porosity, has good lithium-ion conduction characteristics, can reduce the thermal shrinkage rate thereof, and improves the safety performance.

Abstract: A method for co-producing alumina and activated calcium silicate from high-alumina fly ash, comprising the steps that: high-alumina fly ash reacts with sodium hydroxide solution to obtain desiliconized solution and desiliconized fly ash; milk of lime is added to the desiliconized solution to obtain activated calcium silicate; limestone and sodium carbonate solution are added to the desiliconized fly ash to blend raw slurry, the raw slurry is baked into clinker, and sodium aluminate crude solution is obtained from dissolution of the clinker; the sodium aluminate crude solution is subjected to the processes of first-stage deep desiliconization, second-stage deep desiliconization, carbonization decomposition, seed precipitation and etc to obtain alumina.

Abstract: A method for co-producing alumina and activated calcium silicate from high-alumina fly ash, comprising the steps that: high-alumina fly ash reacts with sodium hydroxide solution to obtain desiliconized solution and desiliconized fly ash; lime cream is added to the desiliconized solution to obtain activated calcium silicate; limestone and sodium carbonate solution are added to the desiliconized fly ash to blend raw slurry, the raw slurry is baked into clinker, and sodium aluminate crude solution is obtained from dissolution of the clinker; the sodium aluminate crude solution is subjected to the processes of first-stage deep desiliconization, second-stage deep desiliconization, carbonization decomposition, seed precipitation and etc to obtain alumina.