51results about How to "Improve curing effect" patented technology

The utility model provides a multifunctional double-cavity vacuum coating device which comprises a spraying chamber and a vacuum coating chamber, the vacuum coating chamber is arranged at the top of the spraying chamber, and the vacuum coating chamber is communicated with the spraying chamber through a through hole. A rotating frame is arranged in the spraying chamber, the rotating frame is connected into the spraying chamber through a guide column, the guide column is vertically connected into the spraying chamber, the rotating frame is in driving connection with a driving device, and the driving device drives the rotating frame to ascend into the vacuum coating chamber for vacuum coating. According to the utility model, priming paint coating, vacuum coating and finishing paint coating are integrated into one device, so that workpiece carrying is reduced, workpiece collision is avoided, the surface quality of workpieces is improved, and the production efficiency is improved. The spraying chamber and the vacuum coating chamber which are arranged up and down can reduce the occupied area of equipment, and the rotating frame keeps rotating at a constant speed in the spraying process, so that spraying is more uniform, and the quality of workpieces is improved.

The utility model relates to agitating equipment technical field, concretely to a kind of intelligent sludge solidification agent mixing and stirring equipment, comprising: tank body, support platform, driving gear, transmission gear disc, driven gear ring, connecting ring, connecting rod, scraper, connecting gear, driving bevel gear, driven bevel gear, stirring shaft and stirring blade.Driving gear is engaged with transmission gear disc, driven gear ring is fixedly sleeved in transmission gear disc, connecting ring is installed at the bottom of driven gear ring, connecting ring is arranged connecting rod in circumference, connecting rod outer ring is fixed scraper, driven gear ring top is engaged with connecting gear, connecting gear is fixed with driving bevel gear by connecting shaft, driving bevel gear lower side is engaged with driven bevel gear, driven bevel gear is sleeved with stirring shaft and fixed stirring blade, and stirring shaft and driven bevel gear are rotatably installed on sealing cap.The equipment is high-efficiency stirring by multistage transmission system, scraper is designed to remove material adhered to the inner wall of tank, avoid residual, improve stirring uniformity and efficiency, reduce raw material waste, improve solidification effect.

The utility model relates to a kind of off-type membrane silicone oil quantitative transfer coating curing device, belong to off-type membrane production equipment technical field, including installation bottom plate, the top of installation bottom plate is fixedly installed with the support vertical board of two numbers, two The winding roller is rotatably installed between support vertical board, two The double curing assembly is arranged between support vertical board, the double curing assembly includes the hollow roller of three numbers rotatably installed between two The support vertical board, the both ends of the hollow roller rotatably install rotary connector.Off-type membrane silicone oil quantitative transfer coating curing device, by being provided with three hollow rollers of triangular distribution between two support vertical board, so that the off-type membrane of coating completion, bypass three hollow rollers, hot water is passed into the inside of hollow roller, off-type membrane is heated and solidified, off-type membrane is irradiated and solidified by three ultraviolet lamps, three double solidification, improve the effect of solidification.

This invention proposes an impact-resistant seawall repair adhesive and its preparation method, belonging to the field of adhesive technology. The impact-resistant seawall repair adhesive is prepared from the following raw materials in parts by weight: 70-100 parts water glass, 30-40 parts sodium fluorosilicate, 5-10 parts ammonium chloride, 10-15 parts curing agent, 30-50 parts dimethyl silicone oil, 5-7 parts metal oxide, 2-4 parts emulsifier, and 100-120 parts water. This impact-resistant seawall repair adhesive is a silicate inorganic adhesive that can withstand extremely high temperatures and large tensile and shear forces. It boasts advantages such as high bonding strength with the substrate and abundant raw material sources, good stability, and convenient operation.

This utility model discloses a constant temperature curing oven for powder coating, relating to the technical field of electrostatic spraying equipment. The utility model includes a curing oven body with protrusions at the top and bottom inside the body. Several air vents are located outside the protrusions. Several sets of corresponding upper and lower adjustment components are installed on the exterior of each protrusion. Each adjustment component includes several slides, with pull-out plates connected inside. Connecting rods are connected to both sides of the pull-out plates. Several motors are located on one side of the curing oven body. Several first and second rotating rods are connected to the exterior of the protrusions via mounting brackets. This utility model, by incorporating adjustment components, utilizes motors to drive the first rotating rods to rotate. Under the action of a first synchronous pulley and a first synchronous belt, the second rotating rods rotate synchronously. A traction rope pulls the pull-out plates along the slides, achieving real-time adjustment of the air vent opening size. This allows for adjustment of the hot air output according to the oven temperature requirements without stopping the machine, avoiding production interruptions and significantly improving production efficiency.

This invention discloses a composite fishing net line made from sisal fiber. The preparation method includes the following steps: sisal fiber is depectinized by pectinase; a mixture of ethanol and water containing tetraethyl orthosilicate is prepared, the pretreated sisal fiber is added, dilute sulfuric acid is added to react, and then an alkaline calcium source solution is added to react further, yielding sisal fiber after one treatment; silane coupling agent is used to modify the sisal fiber to obtain sisal fiber after a second treatment; a waxy waterproof layer is sprayed onto the surface of the sisal fiber after the second treatment, and it is dried to obtain sisal fiber monofilaments; the sisal fiber monofilaments are twisted and fixed to obtain the composite fishing net line. This invention uses sisal fiber as the main material to make fishing net lines, which can provide more options for reducing water pollution caused by microplastic particles from fishing nets, and also provides a good idea for expanding the field of deep processing of sisal.

The application relates to the technical field of roadbed engineering, in particular to a roadbed filler based on high-water-content gold flotation tailings and a preparation method thereof.A roadbed filler based on high-water-content gold flotation tailings is prepared from the following raw materials: gold flotation tailings, modified precipitation material, curing agent, activator, solid modifier and anti-cracking agent; the water content of the gold flotation tailings is lower than 20%; in the application, the porous precipitation material and the low-carbon cementing material are used to perform pre-dehydration treatment and efficient curing treatment on the high-water-content gold flotation tailings, so that the roadbed filler with low carbon and low cost and with high strength and low shrinkage is obtained.

The utility model relates to a kind of sample preparation mould for liquid crystal encapsulation frame glue hardness test, belong to liquid crystal encapsulation frame glue testing technical field, sample preparation mould includes sample preparation layer, release layer and pressure cover layer, the sample preparation layer is structured as plate structure, and the center is provided with through-hole;Release layer is set to two pieces, respectively laid in the upper and lower two sides of the sample preparation layer;Pressure cover layer, set to two pieces, respectively laid in the other side of the release layer.The sample preparation mould for liquid crystal encapsulation frame glue hardness test provided by the utility model uses common material in each combination layer, and the manufacturing cost is low, and the mould can be repeatedly used;Through the sample preparation mould, the thickness of frame glue coating can be made consistent, shape is neat, UV curing effect is good, and easy to release.

The utility model discloses a kind of ultraviolet light curing devices, including shell, curing chamber is equipped in the shell, and curing chamber bottom is equipped with the load plate of load and drive workpiece to rotate uniform light, and load plate electrically connected with the driving motor installed in shell, curing chamber is installed with partition cover, and partition cover is sleeved in load plate outside.This ultraviolet light curing device, first, the rotation design of device through load plate, workpiece can be received ultraviolet light in curing process all-round evenly, ensure the consistency of curing quality, avoid the curing defect caused by uneven illumination, to improve curing efficiency and product quality;In addition, the optimization layout of UV light mechanism and the setting of reflector, further improve the illumination intensity and uniformity, shorten curing time, improve production efficiency.

The application discloses a single-component transparent silicone sealant and a preparation method thereof. The single-component transparent silicone sealant is prepared from alpha, omega-dihydroxyl polydimethylsiloxane, a hydroxyl-terminated phenyl-modified resin, heat-resistant fillers, a hydroxyl scavenger, a crosslinking agent, a coupling agent and a catalyst. The crosslinking agent is composed of butanone oxime silane and siloxane oligomers. The hydroxyl-terminated phenyl-modified resin is modified from methyl-terminated phenyl MQ resin. The MQ ratio of the methyl-terminated phenyl MQ resin is 0.5-1, and the phenyl content is 5%-30%. The silicone sealant can maintain high transparency, and has good heat resistance and curing performance. The silicone sealant is a single-component system, and can be applied to the market. After being applied to the market, the silicone sealant can be constructed by using simple glue coating equipment, and the construction cost of enterprises is reduced.

The application discloses a surface subsidence compensation method for soft rock tunnels and relates to the technical field of soft rock tunnel construction, wherein the surface subsidence compensation method for soft rock tunnels comprises the following steps: according to the geological conditions of soft rock in a soft rock tunnel, the section of the soft rock tunnel is divided into a plurality of excavation units; a quantitative relationship model of the excavation units and surface subsidence areas is established; the excavation result is predicted according to the quantitative relationship model, and the excavation sequence is obtained according to the prediction result; each excavation unit is excavated according to the excavation sequence, dynamic pressure balance compensation is implemented, and an excavation part is formed; the surface subsidence area corresponding to the excavation part is gradually backfilled and solidified, and the surface subsidence compensation of the soft rock tunnel is completed. Through the division of the excavation units with uniform geological conditions and the establishment of the quantitative relationship model, the dynamic pressure balance compensation and the layered backfilling and solidification technology are combined, the solidification effect of the surface subsidence position of the soft rock tunnel is improved, and the safety of the soft rock tunnel is improved.

The present application relates to the field of optical cable manufacturing, and discloses a high-temperature-resistant and flame-retardant optical cable manufacturing and shaping process, which comprises an ultraviolet curing furnace, the ultraviolet curing furnace comprises an ultraviolet curing box, the upper and lower ends of the inner wall of the ultraviolet curing box are fixedly connected with first rotating shaft groups, the first rotating shaft groups are rotatably connected with first rotating ring groups through first heating box groups, a plurality of groups of first limiting grooves are formed in the two ends of the inner wall of the ultraviolet curing box, the inner cavities of the first limiting grooves are slidably connected with second rotating shaft groups, the second rotating shaft groups are rotatably connected with second rotating ring groups through second heating box groups, one end of the second rotating shaft groups is fixedly connected with the first circular gear groups through rotating rod groups, and the first circular gear groups are rotatably connected with the ultraviolet curing box. Compared with the prior art, the present application has the advantages that the time required for curing the optical fiber is shorter, the production efficiency is improved, the power consumption of the ultraviolet curing furnace is lower, and the production cost is reduced.

A water and soil loss prevention structure for a dam comprises an embedded body, a plurality of outer insertion holes are formed in the lower portion of the embedded body, an inner threaded section is arranged in the middle of the embedded body, an inner threaded rod is in threaded connection with the middle of the inner threaded section, and a plurality of hinged extension rods are hinged to the lower portion of the inner threaded rod. And a guide cone is arranged at the bottom of the internal thread section, and the guide cone is matched with the external insertion hole, so that the hinged extension rod can extend out of the external insertion hole. The embedded body is embedded or inserted into the dam, then the hinged extension rod below the internal threaded rod in the embedded body extends out of the external insertion hole, connection with the ground is enhanced, and even under the condition that a foundation is soft, the good deep curing effect of the dam can be achieved.

The invention discloses an efficient environment-friendly curing agent for marine soft soil and a preparation method and application thereof, and belongs to the technical field of soft soil curing. The salt-resistant concrete comprises the following components in percentage by mass: 55%-70% of a core gel system, 8%-15% of a composite excitation system, 5%-10% of a salt-resistant modification system and 10%-20% of a reinforced filling system, the core gelling system is composed of steel slag micro powder, slag powder and desulfurized gypsum; the composite excitation system is composed of modified fly ash and a composite alkali activator; the salt-resistant modification system is composed of a chitosan grafted acrylamide copolymer and zeolite powder; the reinforced filling system is composed of polypropylene fibers, nano calcium carbonate and construction waste regenerated micro powder. The curing agent is a special curing agent system for marine soft soil with strong adaptability, high curing efficiency, good durability and essential environmental protection.

The present invention relates to a pressable solvent-free polyurethane sheet formed from a solvent-free polyurethane system comprising a polyol component (a) and an isocyanate component (b), wherein the polyol component (a) comprises (a-1) at least one polyol having a functionality of 1.5 to 2.5; and (a-2) optionally at least one polyol having a functionality of 2.7 to 3.5; wherein the amount of polyol (a-2) is < 6 wt.-%, based on the total weight of the polyol component (a); wherein the average functionality of the polyol component (a) is 1.5 to 2.1. The present invention relates to a laminate and synthetic leather comprising the sheet and uses thereof.

The present application relates to a kind of vertical battery frame mould pressing equipment and its mould pressing forming method, comprising: prepreg equipment, cantilever spreader, cutting and stacking equipment, grabbing manipulator and mould pressing host, mould pressing host includes: bearing base plate, linear guide, left mould pressing assembly, right mould pressing assembly, screw motor assembly, bottom plate for installing inner mould is arranged between left mould pressing assembly and right mould pressing assembly, inner mould is used to place the pre-press raw material to be formed, left mould pressing assembly and right mould pressing assembly are used to compress the pre-press raw material on the two sides of inner mould and form, upper mould assembly is arranged between left mould pressing assembly and right mould pressing assembly, upper mould assembly is used to compress the pre-press raw material on the upper end surface of inner mould and form, the side of inner mould close to screw motor assembly is provided with material pushing mechanism, the side of inner mould away from screw motor assembly is provided with frame body demoulding mechanism;The present application has the characteristics of short beat, high efficiency, less auxiliary equipment, less operator and low production cost.

The utility model relates to ancient tree famous and distinguished tree trunk hollow repair technical field discloses a kind of layered filling and solidification forming equipment for ancient tree famous and distinguished tree trunk hollow repair, including support base plate, mixing box, the right side position of support base plate top is fixed with mixing box, and the intercalation of front and back connecting plate is provided with pin, and the outside of the both ends of pin is connected with locking nut.The utility model passes through the position of feeding opening feeding, the filling material required is fed to the inside of mixing box, when not needing filling, two support seat can be adjusted to approach the outside position of second pipeline, then after the intercalation pin of connecting plate position, locking nut is locked position, to this end, the support of second pipeline tail end second nozzle position is facilitated, when needing to use, then locking nut can be removed, then after holding the outside of second nozzle, first bellow is used to stretch second pipeline, second nozzle finally carries out filling work, and the placing capacity for pipeline is facilitated.

The application provides a tool for bonding and curing of a bevelled reverse thrust rocket nozzle, which comprises a fixing base and an upper pressing plate; the fixing base is used for fixing a nozzle shell so that a nozzle port of the nozzle shell is vertically arranged; the upper pressing plate is installed above the fixing base through a connecting piece; a threaded through hole is formed in the upper pressing plate and is arranged along an axis of a bonding surface of a throat liner and the nozzle shell; and a pressing assembly for pressing the throat liner against the nozzle shell is threadedly connected to the threaded through hole. The tool adopts a groove type design which is convenient for product installation; through coaxial screwing force acting on a bonding conical surface, the nozzle shell is bonded more conveniently and quickly; meanwhile, the upper and peripheral fields of view are not hindered, the bonding process is more clear and controllable, and the removal of excess overflow glue is more convenient than the existing bonding condition; assembly surface abrasion is avoided; the nozzle bonding quality is obviously improved; and the tool is suitable for bonding and curing of most special-shaped bevelled reverse thrust rocket nozzles.

The utility model relates to a UV (ultraviolet) glue dispenser in the field of glue dispensers, which comprises a cabinet and a hood arranged on the cabinet, a workbench is arranged on the cabinet, a glue dispensing device is arranged on the workbench and comprises a base, a support frame and a glue dispensing gun, the support frame and the glue dispensing gun are arranged on the base, a movable sliding table is arranged on the base, an installation jig is connected onto the movable sliding table, and the movable sliding table is connected with the glue dispensing gun. A curing mechanism used for conducting illumination curing on a dispensing product is connected to the machine base and comprises a protective cover, a first curing lamp and a second curing lamp, the first curing lamp and the second curing lamp are arranged in the protective cover, a curing cavity is formed in the protective cover, the first curing lamp is installed in the curing cavity through a rotating rod, and one end of the rotating rod is connected with a driving part. The driving part drives the rotating rod to drive the first curing lamp to rotate and adjust, so that the first curing lamp can perform multi-angle illumination curing on a dispensing product, and the second curing lamp is fixedly mounted on the inner side of the curing cavity, so that multi-angle supplementary irradiation is formed, and the curing effect and efficiency are enhanced.

This invention relates to a high-temperature resistant, room-temperature curing anti-corrosion coating and its preparation method. The high-temperature resistant, room-temperature curing anti-corrosion coating includes component A and component B. Component A includes epoxy resin, small molecule hydroxyl compounds, additives, and inorganic fillers. Component B includes a curing agent. The epoxy resin includes phenolic epoxy resin, which includes various phenolic epoxy resins with different viscosity gradients. The coating of this invention, by using phenolic epoxy resins with different viscosity gradients, can improve the adhesion between the coating and oil pipeline materials, and also improves the resistance to different temperatures and humidity levels. It has strong adhesion to oil pipelines, is easy to apply, and possesses a variety of excellent properties such as high solids content, impermeability, corrosion resistance, high temperature resistance, and thermal stress resistance. It can be applied in harsh environments such as alternating high and low temperatures, alternating dry and wet conditions, alternating strong acids and alkalis, and high abrasion, and is suitable for long-term corrosion protection of oil pipelines.

The utility model relates to the technical field of curing equipment, in particular to a track assembly and a curing oven with the track assembly, and the track assembly comprises at least two sets of track bodies arranged in parallel and turning wheels installed at the outer ends of one sides of the track bodies. The turning wheel is installed on the tensioning structure and is driven by tensioning to achieve displacement adjustment in the direction parallel to the length direction of the track body. The tensioning structure comprises a fixed sliding rail, a sliding block and a traction structure. The sliding block is matched with the fixed sliding rail and is used for fixedly mounting the turning wheel; the traction structure comprises a transition wheel, a counterweight and a traction piece; the traction piece is wound on the transition wheel, and the two ends of the traction piece are connected with the sliding block and the balance weight respectively. The turning wheel is installed on the tensioning structure, real-time dynamic adjustment of the turning wheel is achieved, the materials distributed along the track assembly always keep proper tension based on reasonable counterweight selection, the situation that the curing effect of a chip is affected due to the fact that a material belt is too loose or too tight is avoided, and the curing quality is improved.

The utility model belongs to the technical field of cooling devices, and particularly relates to a rapid cooling device for a glass fiber felt curing forming machine, which comprises a machine body, the machine body comprises a width adjusting mechanism and a buckling mechanism, one side of the top end of the machine body is fixedly connected with a fixed side plate, and the top of the machine body is slidably connected with two connecting plates. One sides of the two connecting plates are fixedly connected with the same movable side plate; a plurality of main conveying rollers are rotationally connected to one side of the fixed side plate, limiting blocks are slidably connected to the inner walls of the main conveying rollers, connecting rods are fixedly connected to one sides of the limiting blocks, and one ends of the connecting rods penetrate through the inner walls of the main conveying rollers and are fixedly connected with driven rollers; in the using process, the width of the machine body can be flexibly adjusted according to glass fiber felts of different specifications through the width adjusting mechanism, the movable side plates, the telescopic rods, the plug pins and other components, the universality and applicability of equipment are improved, various production requirements can be met, and the cost of replacing the equipment due to the change of the product specification is reduced.

The present application provides a radical polymerizable resin composition which is excellent in moldability and curing property and also excellent in workability. The radical polymerizable resin composition contains urethane (meth) acrylate (A) having a structural unit derived from 1,6-hexamethylene diisocyanate and a structural unit derived from 2-hydroxyethyl methacrylate, the urethane (meth) acrylate (A) being a crystalline urethane (meth) acrylate, and contains a radical polymerization initiator (C) and an N-oxyl compound (D), the content of the N-oxyl compound (D) being 0.20 to 0.60 parts by mass per 100 parts by mass of the urethane (meth) acrylate (A).

The utility model belongs to the technical field of carbon brick production equipment, and particularly relates to a curing device for carbon brick production, which comprises a heating curing chamber and a moving trolley, the heating curing chamber is provided with a sealing door, an air heater is arranged above the heating curing chamber, the air heater is connected with a ventilation pipe, the ventilation pipe penetrates into the heating curing chamber and is connected with a heat conduction pipe, and the heat conduction pipe is connected with the moving trolley. A plurality of air outlets are formed in the heat conduction pipe; the moving trolley comprises a trolley body and a plurality of loading frames, the trolley body comprises a bottom plate and two stand columns, moving wheels are arranged below the bottom plate, the two stand columns are fixed to the bottom plate, a hand push rod is installed on the front sides of the two stand columns, a plurality of supporting rod sets are arranged on the rear sides of the two stand columns, and each supporting rod set comprises two horizontal supporting rods. Each loading frame is placed on the corresponding supporting rod set. According to the device, multiple layers of carbon bricks can be separately stored, the upper surfaces and the lower surfaces of the carbon bricks can make contact with enough hot air flow during curing and heating, heating is more sufficient and even, the curing effect is improved, and the quality of the carbon bricks is guaranteed.

The application discloses a kind of hydrophilic epoxy resin waterproof coating and its preparation method and application, the coating includes by epoxy resin, modified epoxy resin, diluent and coupling agent component A, by curing agent, modified curing agent, accelerator component B, wherein modified epoxy resin is by octadecyl methacrylate with bisphenol A type epoxy resin after being mixed to obtain.Compared with conventional epoxy resin waterproof coating, the hydrophilic epoxy resin waterproof coating of the application has the following advantages: high permeability, more excellent waterproof performance is obtained, and construction is more simple;Wetting performance is good, can promote to improve the adhesion between coating and concrete, can obtain better and more long-lasting waterproof effect;It can be cured under low temperature and humid conditions;Easy to flow, it can realize the deep penetration of concrete under reasonable time conditions, no adhesive failure, strong waterproof ability, and reasonable operation time, easy to construction;Non-volatile, more green and environmental protection.

The invention discloses a process for high-temperature harmless treatment of overhaul slag. The aluminum electrolysis overhaul slag is crushed and mixed with sodium carbonate and calcium carbonate, the sodium carbonate reacts with the overhaul slag at the high temperature to convert a fluorine-containing compound into soluble fluoride, meanwhile, the calcium carbonate is mixed at the high temperature, the soluble fluoride is converted into CaF2, and the fluorine curing effect is achieved. The method can effectively solve the problem of safe disposal of dangerous waste residues generated by electrolytic aluminum, so that the dangerous waste residues meet the environmental protection requirement, and the purpose of comprehensive and harmless treatment of the electrolytic aluminum overhaul waste residues is achieved.

The utility model relates to a steam heating type curing oven. According to the technical scheme, the curing furnace comprises a furnace body, the furnace body comprises a shell, the left side and the right side of the inner side wall of the shell are fixedly connected with a curing container through connecting columns, the circumferential outer side wall of the curing container is fixedly sleeved with a spiral heat preservation pipe, and four steam pipes are arranged on the circumferential inner side wall of the curing container from left to right in a circumferential array mode; grooves are symmetrically formed in the left inner side wall and the right inner side wall of the curing container, carrying plates are slidably inserted into the left grooves and the right grooves, the ends, penetrating through the left side wall of the curing container, of the steam pipes communicate with circular ring pipes correspondingly, and the front ends and the rear ends of the circular ring pipes communicate with the front ends and the rear ends of T-shaped air inlet pipes correspondingly. The end, penetrating through the left side wall of the shell, of the T-shaped air inlet pipe is fixedly connected with a first electromagnetic valve. The steam curing device has the advantages that the steam pipes are evenly distributed, the temperature uniformity in the curing container is improved, and steam is recycled for external heat preservation.

The application provides a method for self-activated grading feeding reinforced heavy metal solidification of lithium residue and red mud and a solidified and formed material. The method comprises the following steps: uniformly mixing solid raw materials with lithium residue to obtain a composite powder; dividing the composite powder into a first composite powder and a second composite powder; performing primary feeding by using the first composite powder and a first liquid raw material, and stirring to obtain a mixed slurry; continuously stirring the mixed slurry until the viscosity of the mixed slurry is greater than or equal to 10 5 mPa·s, performing secondary feeding by using the second composite powder and a second liquid raw material, and maintaining the stirring state; pouring the obtained product into a mold, performing vibration degassing, sealing, temperature rising curing and demolding to obtain the solidified and formed material, and completing the solidification of the heavy metal. The method provided by the application can realize the synchronous solidification and stabilization of the lithium residue and the red mud by using the grading feeding mode and the alkali activation effect of the red mud, and does not need to additionally add alkali, thereby providing a harmless method for the lithium residue.

This block polyisocyanate composition has excellent curability at a low temperature when formed as a coating film, and comprises: a block polyisocyanate derived from a polyisocyanate and a block agent; at least one organic acid and / or inorganic acid (A); and at least one metal and / or quaternary ammonium cation (X), wherein the mass ratio X / A of X to A is 0.01-5.0, the content of X is 0.001-20 mass% with respect to the total mass of the block polyisocyanate composition, and the block agent includes a compound having a heterocyclic ring containing at least one nitrogen atom.