32results about How to "Reduce degumming" patented technology

A process for purifying a lipid composition having predominantly neutral lipid components having at least one long chain polyunsaturated fatty acid is disclosed. The process employs contacting the lipid composition with a polar solvent, such as acetone, wherein the solvent is selected such that the contaminants are less soluble in the solvent than in the long chain polyunsaturated fatty acid. The process is typically conducted at cooler temperatures including about 0° C. Upon precipitation of the contaminants from the lipid composition, a separation is conducted to remove the precipitated material from the lipid composition. The long chain polyunsaturated fatty acids can include ARA, DPA, EPA and / or DHA. The process effectively winterizes lipid compositions, thereby reducing the tendency of such compositions to become hazy.

A process for purifying a lipid composition having predominantly neutral lipid components having at least one long chain polyunsaturated fatty acid is disclosed. The process employs contacting the lipid composition with a polar solvent, such as acetone, wherein the solvent is selected such that the contaminants are less soluble in the solvent than in the long chain polyunsaturated fatty acid. The process is typically conducted at cooler temperatures including about 0° C. Upon precipitation of the contaminants from the lipid composition, a separation is conducted to remove the precipitated material from the lipid composition. The long chain polyunsaturated fatty acids can include ARA, DPA, EPA and / or DHA. The process effectively winterizes lipid compositions, thereby reducing the tendency of such compositions to become hazy.

The invention discloses a silk degumming / scouring agent and applications thereof, and concretely discloses a silk degumming / scouring agent strongly-alkaline electrolytic water, and new uses and new technologies of the silk degumming / scouring agent in processing processes comprising silk wadding quilt processing, cut bave or silk degumming, silk cotton, pure silk blank material refining and the like. Common tap water directly is directly electrolyzed through a water electrolyzing device or an electrolytic tank to form strongly-alkaline electrolytic water having a pH value of 11.0-12.0, and the strongly-alkaline electrolytic water can be used as a silk wadding sheet scouring agent, a cocoon shell or silk degumming agent, a silk cotton scouring agent, a pure silk or blank silk scouring agent, and the like. The silk degumming / scouring agent has the advantages of small damage to silk fibers, complete degumming, maintenance of the original resilience and other mechanical performances of the fibers, realization of direct low-cost high-efficiency recovery of sericin from a degum solution without desalination, and avoiding of the server environmental pollution of sericin-containing alkaline wastewater and the huge biological resource waste.

The invention relates to a production technique for extracting soybean germ oil by supercritical carbon dioxide. The soybean germs with good purity quotient is dried at the temperature of 90-120 DEG C until the weight is constant, crushed and sifted for 20-50 meshes, the sifted powder is put into an extraction kettle by virtue of using a shelf; the temperature of the extraction kettle is adjusted to 35-40 DEG C; a CO2 storage steel bottle is opened after a condenser is opened up, an air compressor is not started until the pressure of the steel bottle is equal to the pressure in the extraction kettle, the CO2 is pressurized by the air compressor so as to ensure the pressure to reach the extraction pressure of 15MPa-35MPa; the air compressor is stopped, after the dynamic extraction for 1h-2h, the CO2 and the extracted products are released to a product collector; under the normal temperature and pressure, the CO2 volatilizes and is separated from the products. The invention can remove a majority of phospholipid and non-esterified fatty acid, thereby saving degumming and deacidification and obtaining the soybean germ oil with high quality and yield coefficient; the obtained soybean germ oil has high unsaturated fatty acid content and good nutrient value, and simultaneously the organic solvent is not used during the extraction process, thereby causing no pollution and protecting environment; the production technique has the advantages of short extraction time, low energy consumption and high quality of the produced soybean germ oil.

The invention discloses a surface treatment method for strengthening an aluminum process metal layer and light resistance adhesive force, which is used in a method of coating photoresist on the metal layer. The metal layer and a metal barrier layer covering on the metal layer are manufactured on a substrate. The method mainly comprises the steps of gas containing oxygen is led in a reaction cavity chamber and conducted equal electrolytic dissociation, a metal stopping layer covering on the metal layer is conducted high temperature plasma oxidation process, a metallic oxide film on the surface of the metal stopping layer covering on the metal layer is generated, silicon substrate organic matter compound gas is led in the reaction cavity chamber, an adsorbed layer is generated by conducting chemisorption on silicon substrate organic matter compound on the surface of the metallic oxide film, redundant silicon substrate organic matter compound gas in the reaction cavity chamber is pumped out, only the adsorbed layer is retained, a first bonding intermediate layer is generated by the adsorbed layer under plasma activation reaction.

The invention relates to a method for preparing biodiesel by solvent reinforcement rapid in-situ transesterification; the method is characterized in that: cosolvent is added in the in-situ transesterification of lower carbon alcohol and grease-containing raw material to improve leaching rate of the grease, reduce mass transferring resistance of the grease and the lower carbon alcohol, accelerate in-situ transesterification ratio and simplify the production process of the biodiesel. The rapid in-situ transesterification is carried out to the grease-containing raw material, the refining steps ofgrease extraction, discoloring, degumming, deacidification, dephosphorization and dewaxing and the like are omitted, and the general in-situ transesterification time is shortened to about ten minutesfrom a couple of hours under normal pressure and temperature, alcohol-oil mol ratio is reduced to 100:1 from 300:1-540:1.

The invention provides a production technology of dry red wine with red dates. The production technology comprises the following steps: selecting raw materials, cleaning, steaming and maintaining, and cooling; adding the raw materials to a fermentation tank, and fermenting; separating residues from pulp; ageing; firstly, filtering the aged pulp with kieselguhr, and carrying out super membrane filtration; and bartending, filling and sterilizing. The production technology of the dry red wine with red dates has the beneficial effects that the steps of extracting juice, degumming and clarifying are omitted; the technological process is relatively simple and convenient; as the degumming link is omitted in the overall technological process, the problem that the wine is difficult to filter is solved, and the filtering time is greatly shortened; a traditional chitosan clarifying process is replaced with super membrane filtration, so that the wine can be free of a sediment and good in color after being stored for a long period of time; the production technology of the dry red wine with red dates provided by the invention is an original fruit fermentation process; and the produced fermented wine is relatively strong in red date aroma and relatively good in taste.

The invention discloses an environment-friendly glue for a corrugated board high-speed production line. The glue is characterized by being prepared from the following raw materials by weight: 70% of water, 26.3% of corn starch, 1.8% of alkali lye, 0.5% of borax and 1.4% of a bridging agent. For the environment-friendly glue used for the corrugated board high-speed production line, the viscosity of a gluing machine is 18 s, the gelatinization temperature of the gluing machine is 56 DEG C, the viscosity of a single-side machine is 16 s, and the gelatinization temperature of the single-side machine is 58 DEG C. The invention also discloses a preparation method for the environment-friendly glue used for the corrugated board high-speed production line. The environment-friendly glue provided by the invention has the characteristics of low preparation and usage temperature, high adhesive strength, quick-drying performance, environment-friendliness and low usage cost; and the preparation method has the advantages of reasonable technology, easiness, low preparation temperature and capacity of improving adhesiveness of the adhesive glue.

The invention provides a preparation method of adhesive tape. The preparation method is characterized by comprising the following steps that a first release film is coated with a thermosenstive adhesive, and drying is conducted to form a release film layer and a thermosensitive adhesive layer; a second release film is coated with the thermosensitive adhesive to form a pressure-sensitive adhesive layer fit with the second release film, drying is conducted, and a base material and the pressure-sensitive adhesive layer are fit; the second release film is stripped from the pressure-sensitive adhesive layer and fit with the thermosensitive adhesive layer, and the adhesive tape on which the release film layer, the thermosensitive adhesive layer, the pressure-sensitive adhesive layer and the base material layer are sequentially fit is formed. According to the preparation method, the adhesive tape which can reduce bubbles or marks generated when a shell is wrapped can be obtained, the manufacture procedure protection effect is improved, and the problem that adhesive residues exist after the thermosensitive adhesive layer is fit through heating and stripped through cooling is avoided.

The invention relates to an armor plate device for preventing shooting of multiple rounds of bullets. The armor plate device is camouflaged, bulletproof and easy to assemble and disassemble, and comprises an outermost skin, an armor plate with an bulletproof effect, and a fixture and a bolt which are used for mounting and tightening; the armor plate comprises two ceramic layers and a back plate made of composite materials, wherein the two ceramic layers comprise a first cylindrical ceramic splicing layer and a second square ceramic splicing layer, and the composite-material back plate is an ultra-high molecular polyethylene laminated plate. The outermost skin is used for preventing ceramics from splashing outward due to bullet shooting and for camouflage; the first cylindrical ceramic splicing layer and the second square ceramic splicing layer are mutually complementary to make the weak areas of the two splicing ceramic layers staggered to make the armor plate have no weak area. The armor plate device can improve the capability of the armor plate for preventing multiple bullet shooting, and through the adoption of the modular design, the armor plate can be directly replaced by a new armor plate under the condition that the armor plate is damage by bullet shooting and has the advantage of being convenient to install.

The invention discloses a viscose glue solidification apparatus of an annular piezoelectric transducer. The apparatus comprises a pedestal, an ultrasonic vibration device, a support insulation board and a heating device. The ultrasonic vibration device comprises a Langevin vibrator and an elastic strip, and the elastic strip is arranged at the vibration cross section of the Langevin vibrator; the pedestal is provided with a hole, the ultrasonic vibration device passes through the hole, the external diameter of the elastic strip is greater than the external diameter of the Langevin vibrator, and the lower surface of the elastic strip is attached to the upper surface of the pedestal for fixing the Langevin vibrator; the support insulation board is arranged at the upper surface of the upper end of the Langevin vibrator; the heating device is arranged at the upper surface of the support insulation board and comprises a heating round box and a heat conduction bench which are successively arranged at an upper position and a lower position, and the heating round box is internally provided with a resistance wire. The viscose glue solidification apparatus provided by the invention provides a constant-temperature constant-voltage ultrasonic vibration viscose glue technology, can realize uniform controllable viscose gluing, reduces bubbles in a glue layer, prolongs the life of the adhered piezoelectric transducer and improves the performance of the piezoelectric transducer. Besides, the apparatus is small in size, convenient to dismount and assemble and high in mobility.

The invention discloses a variable cross-section fiber reinforced composite pipe and a pipe-die integrated forming method. The method includes the steps of step 1, steel core die manufacturing and installation in which a steel core die is manufactured and installed, and a metal die is made of thin-wall steel into the shape of the interior of the composite pipe; step 2, steel core die winding in which the steel core die is wound with long fibers to form a fiber composite laying layer; step 3, fiber composite laying layer curing in which an external installed metal outer die integrally wraps thefiber composite laying layer, and the fiber composite laying layer is placed into a curing box for curing; and step 4, machining in which the metal outer die is taken down after curing and machined and installed according to needs. The variable cross-section fiber reinforced composite pipe comprises a middle linear round pipe, transition section conical pipes at the two sides, and end connector parts. The process is free of demolding and the die directly serves as a combined component to be integrally stressed with the composite pipe, so that the overall strength and stability of the composite pipe are improved, a complex demolding process is avoided; and the transition between the composite pipe and a metal structure is provided by the connector parts at the ends, and the composite pipecan be more easily applied to the field of high-performance works.

The invention relates to a manufacturing method of a fluororubber cup, in particular to a manufacturing method of the fluororubber cup. The manufacturing method of the fluororubber cup includes the following steps that firstly, mixed fluororubber subjected to remilling and thin-passing is sheared into fragments through a shear, the fragments are dissolved in an ethyl acetate solvent, and original fluororubber pulp is prepared; secondly, sand blasting is conducted on a metal framework, and the metal framework is washed through gasoline and acetone and aired; thirdly, coating the metal framework with adhesives, a brush is dipped into the original fluororubber pulp and sprays the original fluororubber pulp on the metal framework coated with the adhesives after solvent in the adhesives are evaporated, and the metal framework is placed at the room temperature so that the ethyl acetate solvent can be evaporated; and fourthly, the metal framework coated with the adhesives and the original fluororubber pulp and a fluororubber material are placed in a mode together to be vulcanized, and the rubber cup is manufactured. The manufacturing method of the fluororubber cup overcomes the defect that the fluororubber cup is prone to the degumming phenomenon, and therefore the percent of pass of the fluororubber cup is increased and reliability of the working quality is improved.

The invention provides a backlight module. The backlight module comprises a back frame, an optical film material located in the back frame, square glue located on the surface of the back frame and a bonding layer located between the back frame and the square glue. The square glue comprises a four-section type frame and a connecting part between every two adjacent sections. The connecting parts arewider than the frame, and the area of the bonding layer corresponding to the frame is smaller than that of the bonding layer corresponding to the joining part, so the total square glue coating amountcan be reduced, the cost is reduced, the gluing adhesive force of the connecting part is improved, the problems of glue failure and degumming are reduced, the relative positions of the optical film material and the back frame are not changed, the display quality of the backlight module is improved, and the economic benefits are increased.

The invention discloses a processing technology of a durable and firm carved solid wood door. The processing technology comprises the steps that A, a log material is placed in an acidic solution pooland soaked for 15-30 days, and the preheated log material is placed in a vacuum drying device and subjected to drying treatment for 10-15 days; B, the log material after drying treatment in the step Ais cut into block small wood boards with the equal width, equal length and equal thickness; C, a plurality of grooves are formed in the two side walls of the small wood board dried in the step B, thesmall wood boards are spliced into the large wood boards, the finished large wood boards are staggered and spliced according to the given thickness, and then a pre-mounted mounting groove is milled in one side of the semi-finished solid wood door; D, the small wood boards obtained in the step B and the large wood boards obtained in the step C are routed, the carved decorative board is obtained, and then the decorative board is mounted in the mounting groove in the semi-finished solid wood door obtained in the step C through an adhesive agent; and E, the carved decorative board obtained in thestep D is put into a dust-free paint spraying room for paint spraying treatment, and finally the finished product carved solid wood door is obtained, so that the technical effects that the solid wooddoor is firm and durable in use, difficult to deform and attractive are achieved.

The invention discloses a corrugated board flattening device. The device comprises a working plate, wherein four V-shaped mounting blocks are fixedly connected to the side wall of the working plate; supporting rods are fixedly connected to the V-shaped mounting blocks; cross rods are fixedly connected between the side portions of the supporting rods; sliding rods are fixedly connected to the side walls of the top ends of the supporting rods; a moving frame is arranged on the sliding rods in a sliding mode; moving blocks are fixedly installed at the two sides of the moving frame; the moving blocks are arranged on the sliding rods in a sliding mode; driving motors are fixedly installed on the moving blocks; a pair of buffer gears is fixedly arranged on the inner wall of the moving frame; a rotating shaft is rotationally arranged between the buffer gears; a limiting mechanism is arranged in the working plate; and supporting legs are fixedly connected to the bottoms of the V-shaped mounting blocks. Compared with the prior art, when large protrusions exist on the surface of a corrugated board and upward extrusion on a flattening roller exceeds a certain upper limit, a compression rod can move, a curved plate is pushed to move, a limiting rod abuts against the interior of a limiting groove, and the situation that the interior of the surface of the corrugated board is not completely flattened and degummed is reduced.

The invention discloses an adhesive bonding process of a metal framework and polyurethane. The adhesive bonding process comprises the following steps of S1, machining for forming of the metal framework; S2, surface cleaning of the metal framework; S3, surface glue coating of the metal framework, and S4, preparation of the metal framework and polyurethane composite integral sealing element. According to the adhesive bonding process of the metal framework and polyurethane, the surface energy of a metal material is improved through ultrasonic treatment and glue coating treatment on the metal material; contaminants and residues on the surface of the metal material can be cleaned through ultrasonic treatment; through glue coating treatment, the surface of the metal material is activated, and the surface energy and hydrophilicity are improved; accordingly, the bonding strength of the metal surface and the polyurethane can be enhanced, and the polyurethane and the metal framework can be combined well together to form a composite material. Moreover, composite bonding is firm, and the mechanical performance is good. The problem existing in bonding between polyurethane and the high-strengthmetal material is solved. The phenomenon of adhesive failure to products is reduced.

The invention discloses a display device and a light guide plate. The display device is provided with two flat areas and a bending area located between the two flat areas. The display device comprises a reflective display panel, a cover plate structure and a light guide plate. The cover plate structure is located above the reflective display panel. The light guide plate is located between the reflective display panel and the cover plate structure. The light guide plate is provided with microstructures, the microstructures are located on the upper surface, close to the cover plate structure, of the light guide plate, the microstructures are provided with a plurality of second microstructures located in the bending area, and the sizes of the second microstructures change along with the distance between the second microstructures and the center position of the light guide plate. By adjusting the size and density of the microstructures in the bending area, the contact area between the optical cement and the microstructures can be increased or maintained so as to reduce the degumming problem. According to the display device, the probability of stripping between the microstructure and the optical cement after folding can be reduced, and interference and extrusion between the microstructure and the reflective display device can be reduced.

The invention discloses a method for optimizing a self-alignment process of a silicon carbide MOSFET, which comprises the following steps of: etching a first ion implantation region only by using a layer of P-well photomask to form a P well; forming a second ion implantation region in the first ion implantation region through deposition, etching and other processes so as to form an NPlus region and a Plus region of the laminated layer; and finally, etching a groove of which the depth is greater than the depth of the NPlus region and less than the depth of the Plus region so as to form a corresponding PN junction on the silicon carbide substrate. According to the method, only one layer of photomask is used in the process of forming the P trap, the NPlus region and the Plus region, so that the processes of twice thin film deposition, gluing, exposure, development, photoresist removal and the like are reduced, the processing period is greatly shortened, and the manufacturing cost is reduced.

The invention relates to a method of extracting rice bran oil by virtue of subcritical fluid extraction assisted by a high-voltage pulsed electric field. The method comprises the following steps: dosing; treating in the high-voltage pulsed electric field; preparing a liquid; carrying out subcritical fluid extraction; filtering and centrifugalizing; carrying out reduced pressure distillation; refining grease. The rice bran crude oil extraction ratio is 91.3-94.9%, the acid value is 2.3-2.7mgKOH / g, and the refining ratio of the obtained product rice bran oil is 82.6-83.8%. The main composition of fatty acid comprises 14.9-15.3% of palmitic acid, 42.5-43.8% of oleic acid and 35.9-37.2% of linoleic acid. The acid value is 0.26-0.28mgKOH / g, the peroxide value is 0.4-0.8mmol / kg, and the color and luster is Y32R3.5-Y34R3.5. The oil is good in quality and meets the secondary standard of leached product rice bran oil in GB19112-2003. The method provided by the invention is efficient and environment-friendly, simple in process and suitable for scaled production.

The application relates to the field of material surface strengthening, in particular to a method for improving the fatigue performance of a steel plate and a butt-welded joint. The method comprises the following steps: step A, ultrasonic impact treatment: firstly, carrying out impact treatment on a weld toe part of a welded joint of the steel plate by using an ultrasonic impact head, and then carrying out full-coverage impact treatment on the welded joint; and step B, CFRP reinforcing treatment: after ultrasonic impact treatment of the weld joint of the steel plate is completed, performing CFRP reinforcing treatment on the steel plate and the weld joint, which includes surface treatment, glue treatment and pasting and surface reinforcing. According to the application, ultrasonic impact treatment is conducted on the welded joint, then CFRP reinforcing treatment is conducted on the welded joint and the steel plate, fatigue crack development is delayed in the microcrack stage and the macrocrack propagation stage before fatigue damage, and the fatigue performance of the joint is comprehensively improved.

The invention discloses a high-viscosity rubber for engine mounting. The high-viscosity rubber for engine mounting comprises, by weight, 2-3 parts of a tackifying plasticizer and 0.5-2 parts of vulcanizing agent; 50-55 parts of natural rubber for forming a rubber matrix; 4-7 parts of ethylene-vinyl acetate rubber and 2-5 parts of microcrystalline wax which are used for forming a first tackifying component together with the tackifying plasticizer; 4-7 parts of chloroprene rubber which is used for forming a second tackifying component together with the tackifying plasticizer; and 0.5-2 parts ofa methylene donor, 1-2 parts of non-self curing phenolic resin and 4-7 parts white carbon which are used for forming a third tackifying component. The high-viscosity rubber has a high bonding strengthwith metals, and can be used for mounting heatproof engines of high-grade cars. The invention also discloses a preparation method of the high-viscosity rubber for engine mounting.

The invention discloses a viscose curing device for an annular piezoelectric transducer, which includes a base, an ultrasonic vibration device, a supporting insulating plate and a heating device; the ultrasonic vibration device includes a Lanjievin vibrator and an elastic piece, and the elastic piece is provided At the vibration cross section of the Lanjiewen vibrator, there is a hole on the base, and the ultrasonic vibration device passes through the hole. The outer diameter of the elastic piece is larger than the outer diameter of the Lanjiewen vibrator, and its lower surface is close to the upper surface of the base. The surface is used to fix the Lanjiewen oscillator; the supporting insulation plate is set on the upper surface of the upper end of the Lanjievin oscillator; the heating device is set on the upper surface of the supporting insulation plate, which includes a heating round box and a heat conduction table arranged in sequence up and down. There is a resistance wire inside the box. The device of the invention provides a constant temperature and constant pressure ultrasonic vibration adhesive technology, which can realize uniform and controllable adhesive, reduce bubbles in the adhesive layer, and improve the life and performance of the pasted piezoelectric transducer. In addition, the device is small in size, easy to disassemble and assemble, and highly mobile.

The invention provides a production technology of dry red wine with red dates. The production technology comprises the following steps: selecting raw materials, cleaning, steaming and maintaining, and cooling; adding the raw materials to a fermentation tank, and fermenting; separating residues from pulp; ageing; firstly, filtering the aged pulp with kieselguhr, and carrying out super membrane filtration; and bartending, filling and sterilizing. The production technology of the dry red wine with red dates has the beneficial effects that the steps of extracting juice, degumming and clarifying are omitted; the technological process is relatively simple and convenient; as the degumming link is omitted in the overall technological process, the problem that the wine is difficult to filter is solved, and the filtering time is greatly shortened; a traditional chitosan clarifying process is replaced with super membrane filtration, so that the wine can be free of a sediment and good in color after being stored for a long period of time; the production technology of the dry red wine with red dates provided by the invention is an original fruit fermentation process; and the produced fermented wine is relatively strong in red date aroma and relatively good in taste.

The invention discloses a sticky paper roll low-viscosity formula. The sticky paper roll low-viscosity formula is prepared from raw materials including 40-50% of ethylhexyl acrylate glue, 50-60% of diluent and 1-5% of reaction additives. The sticky paper roll low-viscosity formula prepares the glue from raw materials of acrylic acid and isooctanol, thereby being simple in material acquisition andeasy to control during industrial processes and efficiently reducing the production cost; meanwhile, the diluent is applied to dilution to effectively improve the surface leveling property of the glue; the reaction additives are applied to crosslinking reaction to improve cohesion and stripping resistance of the glue, so that mild reaction and low consumption can be achieve, glue release and displacement can be reduced, and production and processing convenience and application stability can be greatly improved.

The invention discloses a high-viscosity rubber for engine mounting. The high-viscosity rubber for engine mounting comprises, by weight, 2-3 parts of a tackifying plasticizer and 0.5-2 parts of vulcanizing agent; 50-55 parts of natural rubber for forming a rubber matrix; 4-7 parts of ethylene-vinyl acetate rubber and 2-5 parts of microcrystalline wax which are used for forming a first tackifying component together with the tackifying plasticizer; 4-7 parts of chloroprene rubber which is used for forming a second tackifying component together with the tackifying plasticizer; and 0.5-2 parts ofa methylene donor, 1-2 parts of non-self curing phenolic resin and 4-7 parts white carbon which are used for forming a third tackifying component. The high-viscosity rubber has a high bonding strengthwith metals, and can be used for mounting heatproof engines of high-grade cars. The invention also discloses a preparation method of the high-viscosity rubber for engine mounting.

The invention discloses a novel brush pen. A pen tube is divided into an upper pen tube and a lower pen tube, an inward hook-shaped part is arranged on the bottom surface edge of the upper pen tube, correspondingly, an inward concave U-shaped part is arranged on the top surface edge of the lower pen tube, the hook-shaped part and the U-shaped part are mutually matched, and the upper pen tube and the lower pen tube can rotate with each other; a circular cavity is formed in a pen bucket and the lower pen tube, a circular hole is formed between the cavity and the center of the top surface of thelower pen tube, a screw rod is fixed to the center of the bottom surface of the upper pen tube, the screw rod can penetrate through the circular hole exactly, a novel separated-type pen head comprisesa connecting pipe, the connecting pipe is matched with the cavity, a screw hole corresponding to the screw rod is formed in the top of the connecting pipe, a protruding side lug is arranged on the side of the connecting pipe, a groove corresponding to the side lug is vertically formed in the cavity, the separated-type pen head is conveniently moved up and down, the lower end of the connecting pipe is fixedly connected with an inner pen bucket, the outer diameter of the inner pen bucket is equal to the outer diameter of the connecting pipe, and the inner pen bucket is used for fixedly arranging the pen head. According to the novel brush pen, unnecessary touch of the brush pen in calligraphy class learning can be reduced, the occurrence of degumming between the pen bucket and the pen head is lowered, and good practicability is achieved.

The invention discloses an amido amine epoxy curing agent which comprises the following components in parts by weight: 30-55 parts of fatty acid, 30-60 parts of fatty amine, 5-20 parts of an epoxy modifier and 0.2-4 parts of an accelerant, the fatty acid is one or a mixture of more of C16-C20 higher fatty acid, oleic acid, linoleic acid, abietic acid and tall oil; the fatty amine is one or a mixture of more of diethylenetriamine, triethylene tetramine, tetraethylenepentamine and pentaethylenehexamine; the epoxy modifier is one or a mixture of more of C12-C14 alkyl glycidyl ether, 1, 4-butanediol diglycidyl ether, o-cresol glycidyl ether and trimethylolpropane triglycidyl ether. The amido amine epoxy curing agent is moderate in curing reaction time, low in viscosity and convenient to operate, has excellent adhesive force on a humid surface, and is particularly suitable for the field of civil engineering in a humid environment.

The invention discloses a medical facility shell cambered surface transition connecting plate and a bonding method thereof. The medical facility shell cambered surface transition connecting plate and the bonding method aim at overcoming the defects that according to an existing medical facility shell, in the production process, if the thickness of a plate body of the shell is too large, phenomena that bending is hard or degumming, outward arching and the like are likely to happen after bending bonding are prone to occurrence in the cambered surface transition process, and consequently the manufactured shell is damaged or is not attractive. According to the technical scheme, the medical facility shell cambered surface transition connecting plate comprises a plate body matched with a corner cambered surface of a shell bottom plate and a plurality of molding grooves formed in the plate body and evenly distributed in the length direction or the radian direction, and the two ends of the plate body extend out of the corner cambered surface of the shell bottom plate. The medical facility shell cambered surface transition connecting plate has the beneficial effects that the shell is more convenient and attractive when cambered surface transition is carried out.