3results about How to "Guaranteed bending strength" patented technology

The invention relates to the field of functional ceramics, and provides a low-volume-resistivity silicon carbide ceramic material and a preparation method thereof in order to reduce the volume resistivity of silicon carbide ceramics and enable the silicon carbide ceramics to meet the use requirements of semiconductor etching equipment. The preparation method comprises the following steps: in a CVD (Chemical Vapor Deposition) furnace, firstly placing a graphite base material, then vacuumizing the CVD furnace, and then re-pressing to atmospheric pressure; introducing process gas, preserving heat for 50-60 hours to obtain a CVD-SiC ceramic material, cooling to room temperature, and discharging from the furnace; carrying out annealing treatment on the prepared silicon carbide ring; then processing the inner wall and the outer wall of the obtained silicon carbide annular material; finally, the silicon carbide ring with the graphite exposed on the inner surface and the outer surface is placed in a graphite oxidation furnace, the low-volume-resistivity silicon carbide ceramic material is obtained after treatment, the overall compactness, heat conductivity and bending strength of the material are guaranteed, the volume resistivity of the silicon carbide ceramic is reduced, and the silicon carbide ceramic can be conveniently applied to etching equipment.

The application discloses a kind of high flow high tenacity PC / ABS alloy and its preparation method;The alloy includes the following components: PC resin 60-80 parts;ABS resin 20-40 parts;Antioxidant 0.3-0.6 parts;Impact modifier 3-6 parts of compatibilization.It includes the following steps: PC, ABS, compatibilization impact modifier, antioxidant are mixed to get premix, and it is obtained by extruding granulation.The application uses polycarbonate weight average molecular weight, which ensures the tensile strength of alloy material, bending strength;Using high glue content toughener ensures the notched impact strength of alloy material, and suitable shell structure increases the compatibility of PC / ABS.The preparation method of the application is simple and easy to operate, and easy to industrial production;The product prepared by the method can be widely used in high tenacity and high flow demand material field, and has very broad application prospect and industrial value.

The application discloses an anti-static low-extraction polyethylene blow-molding product, which comprises, from outside to inside, an outer layer, an intermediate layer and an inner layer; the outer layer comprises high-density polyethylene and an anti-static agent; the intermediate layer comprises high-density polyethylene; the inner layer is fusible polytetrafluoroethylene; a transition layer is further arranged between the intermediate layer and the inner layer; the transition layer comprises high-density polyethylene and a fluorine-containing alkylated poly(ethylene-g-maleic anhydride) polymer; and the fluorine-containing alkylated poly(ethylene-g-maleic anhydride) polymer is obtained by reacting a fluorine-containing alcohol and poly(ethylene-g-maleic anhydride) under the catalysis of toluenesulfonic acid. The product has the advantages of corrosion resistance and clean protection, high compatibility and structural strength, and double-sided anti-static performance.