8results about How to "Increase the spread distance" patented technology

The invention relates to the technical field of nylon materials, and discloses a low-moisture-absorption nylon composite material and a preparation method thereof. The nylon composite material prepared by the invention is prepared from the following raw materials in parts by weight: 40-50 parts of nylon 66, 35-55 parts of modified nylon 6, 25-35 parts of reinforcing filler, 0.5-2 parts of a lubricant and 0.5-1 part of an antioxidant, the nylon 66 / modified nylon composite material is prepared by taking nylon 66 and modified nylon 6 as substrate materials, adding auxiliaries such as reinforcing filler, mixing, extruding and granulating, the modified nylon 6 is introduced, so that the toughness of the composite material is improved, and the water absorption rate is reduced; due to the introduction of the reinforcing filler, the synergistic effect of halloysite and boron nitride can be utilized, the flame retardant property of the composite material is improved, and the water absorption rate is further reduced.

The invention discloses a preparation method of a negative photoresist patterned film layer, and relates to the technical field of photoresist materials. The preparation method comprises the following steps: 1, sequentially carrying out acid pickling, hydrogen peroxide washing and pure water cleaning on an epitaxial wafer to obtain a pretreated epitaxial wafer; 2, spin-coating negative photoresist on the surface of the pretreated epitaxial wafer; carrying out soft baking, carrying out exposure treatment under the shielding of a mask, and transferring a pattern to the preprocessed epitaxial wafer; and carrying out developing treatment, pure water cleaning and nitrogen drying to obtain the negative photoresist patterned film layer. The negative photoresist is prepared from the following raw material components in parts by mass: 22 to 26 parts of photosensitive polyimide, 4 to 6 parts of POSS (Polyhedral Oligomeric Silsesquioxane)-based branched polyimide, 10 to 12 parts of sulfydryl monomer, 3 to 4 parts of initiator and 108 to 132 parts of organic solvent. According to the invention, the quality of the negative photoresist patterned film layer is effectively improved by optimizing the components and the soft baking and exposure process.

The present application provides a spray assembly and a spray device, wherein the spray assembly includes a spray plate, and a first gas movement path is provided on the spray plate, wherein the first gas movement path includes at least one first sub-channel arranged in layers in the direction of the height of the spray plate, and adjacent first sub-channels are connected through first connecting holes, and at least two first connecting holes are provided, and the projections of the first connecting holes located in adjacent layers on the bottom surface of the spray plate do not overlap. In this way, the process gas can be dispersed downward layer by layer from multiple first sub-channels arranged in layers, and adjacent first sub-channels are connected through first connecting holes, and multiple first connecting holes are provided, and the projections of multiple first connecting holes in the height direction of the spray plate do not overlap, so that the process gas can be evenly sprayed onto the object to be sprayed, the diffusion distance of the gas is increased, and the uniformity of the gas spraying is good.

The utility model provides a movable dust control spraying device which comprises a liquid storage box and a spraying assembly, the upper surface of the liquid storage box is fixedly connected with an air pump and a fixed cylinder respectively, the upper surface of the fixed cylinder is fixedly connected with a flow dividing box, the air outlet end of the air pump is communicated with an inner cavity of the fixed cylinder, and the bottom of an inner cavity of the liquid storage box is fixedly connected with a liquid pump. The liquid pump is communicated with an inner cavity of the flow dividing box through a liquid conveying pipe, the spraying assemblies are symmetrically connected to the outer side face of the flow dividing box, the electric rods are symmetrically connected to the lower surface of the flow dividing box, telescopic rods of the electric rods are fixedly connected with extension pipes in the spraying assemblies through push plates, and each spraying assembly is composed of a guide pipe, an extension pipe, a reinforcing cylinder and a flow dividing ring. One end of the guide pipe is fixedly connected to the outer side of the shunting box. Through cooperation of the shunting box, the fixing cylinder, the air pump, the electric rod and the spraying assembly, the device can spray water mist at multiple angles, the water mist diffusion distance can be increased, the coverage range of the water mist can be enhanced in an auxiliary mode, and therefore the flying dust treatment effect is enhanced.

The present invention belongs to the technical field of low-temperature plasma generating equipment, and discloses a plasma device and a control method for enhancing disinfection. This method improves the distance of directional diffusion movement of active particles, as well as the probability and duration of collision between these active particles and pathogenic microorganisms through the coupling of dielectric barrier discharge and ion extraction electric field, thereby improving the disinfection efficiency without increasing the plasma intensity. The present invention solves the problem of high concentration of byproduct ozone emission while enhancing the disinfection efficiency while enhancing the plasma intensity in the prior art. Based on the dielectric barrier discharge technology, the present invention sets an ion extraction system in the particle diffusion area of ​​the dielectric barrier discharge to increase the diffusion distance of a large number of negatively charged disinfection factors in the plasma and the duration of action with pathogenic microorganisms.

The application relates to the technical field of passive protection of spacecraft, and particularly relates to a deployable impact protection system for space objects. The system comprises: a plurality of elastic support rods for forming an energy storage and deployment structure; a protection unit array comprising a plurality of protection units, which are arranged on the elastic support rods, each protection unit comprising a buffer layer, a filling layer and a back wall; a chain release mechanism for restraining the elastic support rods in a compressed state and uniformly releasing the restraint after receiving a release instruction; a gap filling mechanism arranged between the buffer layers of adjacent protection units to fill the gap between the adjacent units caused by deployment; and a lock mechanism for locking and detachably connecting the protection units. The application significantly increases the spacing between the buffer layer and the cabin wall through large-stroke deployment of the super-elastic rod, thereby improving the high-speed impact protection capability of the spacecraft against space debris. Meanwhile, the system adopts a modular protection unit design, can replace damaged units in orbit, and has the advantages of simple structure, light weight, high reliability and convenient maintenance.

The negative ion generating device comprises a mounting plate, a containing groove is formed in the mounting plate, an opening of the containing groove faces the first side of the mounting plate, the mounting plate is further provided with an air inlet channel, and the air inlet channel is communicated with the containing groove; airflow flowing from the second side of the mounting plate to the first side of the mounting plate enters the accommodating groove through the air inlet channel and is discharged in the direction far away from the second side of the mounting plate; the negative ion generator is arranged in the containing groove and used for generating negative ions, and the negative ions are discharged in the direction away from the second side of the mounting plate along with airflow entering the containing groove; compared with the prior art, when the negative ion generating device works, airflow on the second side of the mounting plate flows towards the first side of the mounting plate 1 and then enters the containing groove through the air inlet channel in the mounting plate, negative ions generated by the negative ion generator are blown downwards, and the diffusion distance of the negative ions is increased.

The invention discloses an ion generator, a refrigerator and a control method. The ion generator comprises a direct current power supply, the output end of which is connected with a first terminal of the primary side of a transformer; a second terminal of the primary side of the transformer is connected with the reference ground, a first terminal of the secondary side is connected with the first end of the filter capacitor, a second terminal is connected with the first end of the filter capacitor, the first terminal of the secondary side of the transformer is connected with the discharge electrode, and the discharge electrode is arranged opposite to the neutral electrode; the first detection module is used for detecting the input voltage of the discharge electrode; the input end of the variable frequency controller is connected with the first detection module, the output end of the variable frequency controller is connected with the switching tube, and the variable frequency controller is used for adjusting the switching period and / or duty ratio of the switching tube between the second terminal of the primary side of the transformer and the reference ground after the discharge electrode continuously operates for a period of time under the same input voltage, so that the input voltage of the discharge electrode is changed. According to the invention, the ion generation amount and the ion diffusion efficiency can be improved.