49results about How to "Reduce pretreatment process" patented technology

The invention belongs to the field of powder paints and particularly relates to a self-cleaning super-weather-proof powder paint. The self-cleaning super-weather-proof powder paint comprises a carboxyl-terminated polyester particle system and a fluorocarbon resin particle system in a weight part ratio of 4:1-1:4, wherein the fluorocarbon resin particle system contains TiO2 nano-particles. As carboxyl-terminated polyester is introduced into a pure fluorocarbon paint, the phase separation occurs in a solidification process, and the fluorocarbon resin floats up to the surface of a coating to serve as coating protection and ageing resistance; the carboxyl-terminated polyester and the like and a substrate can be well wetted, so that the coating and the substrate can be well adhered and can hardly crack and spall; as the TiO2 nano-particles only exist in a fluorocarbon phase, the resin on a bottom layer cannot be broken, and the excellent stability of the system is guaranteed; and the TiO2 nano-particles are scattered in a dry blending manner, and the complex preprocessing is avoided, so that the preprocessing process can be greatly shortened, the cost is lowered, and the efficiency is improved.

The invention discloses a baking varnish for a magnesium aluminum alloy base material and preparation and using methods thereof. The preparation method comprises the following steps of: (1) adding polyester modified acrylic resin, epoxy resin, an anti-forming agent, a dispersing agent, a wetting agent, a leveling agent, and a part of solvent in a certain ratio into a stirring kettle sequentially and stirring; (2) adding color paste, filler, and an antisetting agent and stirring in a high speed; and (3) finally adding amino resin, adhesion promoter, and residual solvent and uniformly stirring to finish the whole preparation process of the polyester baking varnish. The using method of the prepared polyester baking varnish for the magnesium aluminum alloy base material comprises the following steps of: weighing the polyester baking varnish for the magnesium aluminum alloy base material, stirring uniformly in the weight ratio of the polyester baking varnish to diluents of 1:(0.4-0.6), spraying to the magnesium aluminum alloy base material, placing for 10 to 20 minutes, baking at the temperature of between 150 and 170 DEG C for 20 to 30 minutes, and baking and curing to obtain the polyester baking varnish layer.

The invention relates to a coating with performances of self-cleaning, heavy corrosion protection and super weather resistance. The coating with performances of self-cleaning, heavy corrosion protection and super weather resistance comprises an epoxy resin particle system which consists of epoxy resin and curing agent A, and a fluorocarbon resin particle system which comprises fluorocarbon resin, curing agent B and TiO2 nanometer particles. The ratio (weight in parts) of the epoxy resin particle system to the fluorocarbon resin particle system is 4-1:1-4. The self-cleaning powder coating with performances of heavy corrosion protection and super weather resistance disclosed by the invention has phase separation during the curing process to form a fluorocarbon face and an epoxy bottom layer, TiO2 nanometer particles only exist in the fluorocarbon face, and photocatalysis decomposition is prevented under the action of TiO2 due to the high chemical stability of fluorocarbon, so that the powder coating has good performances of self-cleaning, heavy corrosion protection and super weather resistance.

The invention relates to a crushing assembly. The crushing assembly comprises a first tool, a second tool and a rotary shaft. The first tool and the second tool are arranged on the rotary shaft. The first tool is fixed relative to the rotary shaft. The second tool can swing relative to the rotary shaft. According to the crushing assembly, the first tool is driven to rotate by the rotary shaft so that a plastic shell and other materials can be shredded, and the materials are broken into pieces by the second tool swinging relative to the rotary shaft. By adopting the mode that the first tool and the second tool are combined, tool abrasion is reduced, quick crushing of complex plastic containing screws and other metal impurities is achieved, the metal separation pretreatment procedure is omitted, the production cost is reduced, and the production efficiency is improved. The invention further relates to a crusher comprising the crushing assembly.

The invention discloses lyocell fiber containing nano particles and a preparation method thereof. The preparation method includes following steps: mixing hydrosol containing nano particles with a 50% NNMO aqueous solution, adding cellulose wood pulp meal chips being 0.1-0.5 mm in length according to proportion, and performing a traditional lyocell fiber spinning process to obtain the lyocell fiber being 0.2-20% in the content of the nano particles. By means of different addition of nano materials, the lyocell fiber achieves a flame-retarding function, an anti-bacterial function, an ultraviolet-proofing function and the like. The method achieves uniform dispersion of the nano particles in the lyocell fiber, integrates the dewatering processes of the nano particle hydrosol and a lyocell cellulose spinning solution, thereby omitting a pre-treatment process of the nano material, simplifying the spinning process and reducing production cost.

This invention provides a solar seawater desalination device. The solar seawater desalination device comprises a vacuum pump, a water inlet pump, a solar receiving pond and a low-temperature multi-stage distillation system. A water outlet of the solar receiving pond is connected with the low-temperature multi-stage distillation system. The solar receiving pond comprises multiple stages of water ponds connected in series, and coated vacuum glass is used for the water ponds so that a ceiling can be formed; intercepting filtering cloth is arranged in the water ponds; the low-temperature multi-stage distillation system comprises multiple stages of low-temperature multi-effect vacuum cabins connected in series; an evaporating and condensing heat exchange plate is horizontally arranged in each cabin, the tail end of each evaporating and condensing heat exchange plate is connected with the vacuum pump, and the two ends of each evaporating and condensing heat exchange plate and the bottom of the corresponding cabin are sealed so that a sealed cavity can be formed; a water passing hole is formed in the lower portion of the connection face of every two cabins; the top of the previous-stage cabin and the bottom of the later-stage sealed cavity are connected with a steam pipe; a fresh water flow-out port is formed in the bottom of each sealed cavity; the vacuum degree of each later-stage cabin is lower than that of the corresponding previous-stage cabin due to the vacuum pump. The technical effects of reducing water making cost and improving water making efficiency are achieved.

The invention discloses an oil mud two-stage thermal desorption system with a high water content and integrated skid-mounted equipment, and belongs to the technical field of oil mud treatment devices.The system includes a feeding system, a first-stage thermal desorption system, a second-stage thermal desorption system, a discharge system, a steam condensation and oil-water separation system and anitrogen protection system, which are integrated in the integrated skid-mounted equipment. The system aims at deficiencies of high energy consumption and limited treatment capacity in the oil mud thermal desorption method treatment process, reduces the water content of the oil mud through microwave thermal desorption pretreatment of first-stage thermal radiation, uses the indirect thermal desorption of second-stage heat conduction to separate oil from the soil, and improves the thermal efficiency and the processing capacity of the equipment by a first-stage thermal desorption distributor, a second-stage thermal desorption flame retardant plate and a fire blocking wall to increase the flue gas residence time. The system solves the problem that a microwave belt discharge belt adheres to theoil sludge, a steam releases on the discharge port and the sealing and the safety concern people, the structure is reasonable and compact, and the system is convenient to relocate and install, and has good application prospects.

The invention discloses a continuous composting device for organic refuse. The continuous composting device comprises a primary composting chamber with a feed port and a discharge port, a secondary composting chamber connected with the primary composting chamber through a spiral conveying device, a stirring device, a fed material crushing device and an air supplying device; the stirring device comprises a horizontal stirrer arranged at the center inside the primary composting chamber and a motor which is located at one end of the primary composting chamber and is in driving connection with the horizontal stirrer; the fed material crushing device comprises a crushing device body arranged between the feed port and the primary composting chamber and a motor which is located at one end of the primary composting chamber and is in driving connection with the crushing device; the air supplying device comprises an air inlet located at the bottom of the primary composting chamber, a fan connected with the air inlet and an air uniform distribution layer arranged at the bottom of an inner cavity of the primary composting chamber. According to the continuous composting device for the organic refuse, continuous composting of the organic refuse can be achieved, materials are uniformly stirred in the composting process so as to maintain the temperature of a reaction chamber, and then the treatment amount of the organic refuse can be greatly increased.

The invention belongs to the technical field of power batteries for new energy vehicles, specifically relates to a method for applying nanosecond laser welding in a pouch lithium battery. The method comprises the steps of sorting cells and binding the cells into a cell group; processing the cell group through high temperature glue coating and epoxy board attaching, and encasing and gluing the cell group; cleaning a conductive copper plate through a laser cleaning machine; enabling the conductive copper plate to pass through a tab of the cell to form a module to be levelled; putting a plurality of the modules to be levelled into a pressing device, bending the tab of the cell, and pressing the conductive copper plate; welding the tab and the conductive copper plate by a nanosecond fibre-optical laser machine; and inspecting the quality of the welding. According to the method for applying nanosecond laser welding in a pouch lithium battery, the nanosecond fibre-optical laser machine is introduced into the field of welding, such that a pretreatment of aluminium-nickel conversion or aluminium-copper conversion before plating is omitted, and the application of nickel strips and red glue materials is cancelled, while the number of workers and the manufacturing cost are also reduced.

The invention discloses a scale-inhibiting, corrosion-inhibiting and fungicide for circulating cooling water under high concentration ratio, wherein the weight percentage of each component is: 5-15% of alkaline oxide, 30-40% of silicate, boric acid Salt 30-40%, molybdate 0-10% and metal oxide 5-10%.

The invention relates to a method for producing xylitol with hemicellulose extracted from liquid waste of regenerated cellulose fiber production or papermaking. The method includes: collecting the liquid waste of regenerated cellulose fiber production or papermaking as an original hemicellulose solution; splitting the original hemicellulose solution under the sulphuric acid catalyst action and allowing the hemicellulose in the original hemicellulose solution and water to combine to form pentose to obtain hydrolysate; subjecting the hydrolysate to decoloration by the aid of a decolorizing agent; after decoloration, subjecting the hydrolysate to primary ion exchange with anion exchange resin to remove sulfate ions from the hydrolysate; subjecting the hydrolysate to primary concentration, secondary ion exchange, hydrotreating, tertiary ion exchange and secondary concentration to finally obtain the xyliton product. With the method that hemicellulose in the liquid waste of the regenerated cellulose fiber production or papermaking is taken as the raw material, source of the raw material of the xylitol is expanded, and full utilization of the resource is realized; a conventional pretreatment process of the xylitol is omitted, and the problem about pollution caused by acidic water and waste sludge discharge is solved.

The invention discloses an active-carbon and regenerated-cellulose composite material and a preparing method thereof, and belongs to the technical field of spinning. The preparing method of the active-carbon and regenerated-cellulose composite material includes the following steps that turbid liquid containing treated active carbon and regenerated cellulose are mixed, and mixed liquid containing the active carbon and the regenerated cellulose is prepared; the mixed liquid containing the active carbon and the regenerated cellulose is formed, and the active-carbon and regenerated-cellulose composite material is prepared. The active-carbon and regenerated-cellulose composite material is prepared with the preparing method of the active-carbon and regenerated-cellulose composite material, and in the active-carbon and regenerated-cellulose composite material, the value range of the mass percentage content of the active carbon is 1% to 30%. A self-agglomeration effect of the active carbon canbe effectively reduced, the good adsorption characteristic of the active carbon can also be guaranteed, and the composite material also has the advantages of being degradable in regenerated-cellulosefiber, soft in hand feeling and glossy.

The invention provides a sealing device for an optical fiber perform tail handle, which comprises a quartz tail tube fixed on a rod hanging platform. A tail handle part of the preform is fixed at thelower end of the quartz tail tube, and a quartz assembly for realizing sealing sleeves a reducing area of the tail handle of the preform. According to the optical fiber preform tail handle sealing device provided by the invention, the preform pretreatment process is effectively reduced, the original tail handle does not need to be cut off and then subjected to rod hanging and wire drawing on a tail tube, and the production cost is reduced. And meanwhile, through reasonable structural design, the production hidden danger caused by a large reducing area at the tail part of the preform is avoided.