4results about How to "Original" patented technology

A method for inducing the degradation of meltblown nonwoven fabric for face masks using metabolic enzymes includes: taking a meltblown nonwoven fabric product to prepare a small sample; placing the small sample in a ball mill and vacuum grinding it to prepare a sample; weighing the sample and dispersing it in water to prepare a meltblown nonwoven fabric dispersion of a certain concentration; mixing the meltblown nonwoven fabric dispersion with a metabolic enzyme solution and mixing them evenly in a vortex mixer; incubating the mixture of the meltblown nonwoven fabric dispersion and the metabolic enzyme in a water-jacketed incubator; and completing the degradation of the meltblown nonwoven fabric. This invention not only enables the biodegradation and metabolism of meltblown nonwoven fabric under mild conditions under the induction of metabolic enzymes, overcoming the misconception that meltblown nonwoven fabric is inert and resistant to biological digestion or degradation, but also provides a novel enzymatic method for removing contaminants from meltblown nonwoven fabric based on the special degradation ability of metabolic enzymes. This method is simple to operate, highly efficient, and innovative.

The application discloses a kind of calculation methods of X-ray intensity distribution in power cable, first using multi-frequency X-ray machine to five kinds of power cable materials of copper, aluminum, XLPE, silicone rubber and semiconductive layer, record initial X-ray dose rate and dose rate after penetration;Second, the transmittance of different materials through different thickness, average attenuation coefficient and each section average attenuation coefficient are calculated by X-ray attenuation formula, and the fitting formula is obtained;By comparing the results of traditional method with the results of the application calculation method, it can be found that when using traditional attenuation coefficient calculation, due to lack of measurement of X-ray attenuation coefficient of multi-frequency X-ray source transmission material and consideration of multiple hardening phenomenon occurred when cable material is irradiated by X-ray, larger error can be caused.It can be confirmed that the calculation method of this experiment is more accurate than traditional method.

The application provides a kind of superhigh pressure multi-field coupling stress-strain material characterization equipment and method, wherein the equipment comprises: a pressure testing machine, including a moving platen, an upper pressure plate, a base and a lower pressure plate, the upper pressure plate is provided with a probe accommodating cavity reaching the lower surface, and a first crystal cone is arranged at the opening, the lower pressure plate is provided with a probe accommodating cavity, and a second crystal cone is arranged at the opening;First probe unit and second probe unit respectively include at least one of ultrasonic probe, laser probe, visible light probe, infrared probe, ultraviolet probe, electromagnetic wave probe, radioactive ray probe, the probes of the two units are respectively arranged in the probe accommodating cavity of the upper pressure plate and the lower pressure plate, and are respectively installed opposite to the first crystal cone and the second crystal cone.This application can realize the combined test of one or more physical signals synchronously during the pressure test of the material, and can also realize the material test under superhigh pressure condition.

The application discloses a kind of thin-walled piece processing methods without rigid connection, belong to machining technical field, to solve the problem of traditional rigid clamping plastic deformation in the processing of aero-engine stator ring class and other thin-walled deformable parts, the method comprises: according to the structure of thin-walled piece design special perfusion fixture and equip with adaptive lathe tool clamps;If the part with blade is bound with cotton rope blade, then mix yellow wax and white wax in proportion and heat melting;The part is put into perfusion fixture, and perfusion molten wax is cooled to realize no rigid connection;Replace the fixture parts and fix with lathe tool clamp, control the machining allowance to complete machining;Finally, heat the molten wax, and take out the piece by removing the rope.The application is simple to operate, can effectively control the deformation of part processing and free state, adapt to a variety of thin-walled ring parts processing, practicality and applicability is strong, can be widely used in the high-precision machining of thin-walled parts in aviation field.