88 results about "Cure time" patented technology

The invention provides a toughened curing-controllable prepreg and a preparation method thereof, and belongs to the technical field of high-performance composite materials. Comprising the following components in parts by mass: 100 parts of epoxy resin, 100 parts of a thermoplastic resin toughening agent, 100 parts of an inorganic nanoparticle toughening agent, 100 parts of a latent curing agent, 100 parts of an organic urea accelerant, 100 parts of an imidazole accelerant and 100 parts of a reactive diluent, correspondingly, 1-5 parts by mass of a thermoplastic resin flexibilizer, 0-3 parts by mass of an inorganic nanoparticle flexibilizer, 4-8 parts by mass of a latent curing agent, 1-4 parts by mass of an organic urea accelerator, 0.1-0.5 part by mass of an imidazole accelerator and 5-20 parts by mass of an active diluent are added. The prepreg provided by the invention not only is endowed with fast curing and controllable curing time, but also is endowed with relatively long room-temperature storage period, high toughness and good impact resistance, and is especially suitable for the fields of low-altitude aircrafts, automobiles, ships and the like.

These polypropylene resin foam particles each have a foam core layer composed of a polypropylene resin, and a coating layer covering the foam core layer. The coating layer is composed of linear low-density polyethylene. The mass ratio of the coating layer to the foam core layer is 0.005-0.05. The polypropylene resin constituting the foam core layer satisfies a prescribed condition (i) or (ii). Said foam particles can remarkably reduce the steam pressure at the time of in-mold molding, can shorten the curing time, and furthermore makes it possible to obtain a foam particle molded article that has a desired shape and is excellent in appearance even when the curing time is shortened.

The present application relates to the technical field of industrial control systems, and in particular to a copper clad laminate glue mixing control system and method. The copper clad laminate glue mixing control system includes a glue mixing component, a coating component, a curing component and a control component; the control component is used to determine the target coating strategy adopted by the coating component for the non-standard glue according to the first glue quality parameter of the non-standard glue prepared by the glue mixing component; the target coating strategy includes a target coating pressure value, a target coating speed value and a target glue coating amount; the coating component is used to adhere the non-standard glue to the substrate according to the target coating strategy to obtain a non-standard coating; the control component is also used to determine the current curing strategy of the curing component according to the first coating quality parameter of the non-standard coating; the curing strategy includes a curing time parameter and a curing temperature parameter; the curing component is used to perform a curing treatment on the non-standard coating according to the curing strategy to obtain a target finished product.

The invention relates to the technical field of composite material preparation, and discloses a vacuum infusion epoxy resin system which comprises the following components in parts by weight: 50-80 parts of epoxy resin, 10-30 parts of a curing agent, 1-5 parts of an accelerant, 5-15 parts of a flexibilizer, 10-20 parts of filler, 1-3 parts of a coupling agent, 5-10 parts of a diluent, 0.1-1 part of a defoaming agent, 0.5-2 parts of an antioxidant and 0.5-2 parts of a light stabilizer. Low-temperature rapid curing is achieved through the synergistic effect of the modified aromatic amine curing agent and the accelerant, the carboxyl-terminated nitrile rubber toughening agent and the filler form a synergistic toughening system to improve the mechanical property, and the hydrogenated bisphenol A epoxy resin is matched with the light stabilizer and the antioxidant to enhance the weather resistance and the high temperature resistance. The system can be used for preparing composite materials in the fields of wind power generation blades, ships, aerospace and the like, fiber reinforced materials are infiltrated by adopting a vacuum infusion forming process and then are cured and formed, and the problems that an existing resin system is long in curing time and insufficient in mechanical property and weather resistance are solved.

The invention relates to a medium-temperature curing epoxy resin glue solution, a preparation method thereof and an application of the medium-temperature curing epoxy resin glue solution in a fiber reinforced plastic pressure-bearing pipeline. The invention belongs to the field of epoxy resin. The problems of high curing temperature, long curing time, relatively high energy consumption, relatively low efficiency and the like during curing of the prepared fiber reinforced plastic pressure-bearing pipeline are solved. The medium-temperature curing epoxy resin glue solution is prepared from bisphenol A epoxy resin, acid anhydride, a quaternary ammonium salt compound, an amine compound, a wetting agent, a toughening agent, an anti-aging agent and a thickening agent according to a reasonable proportion, and a pressure-bearing pipeline prepared from the medium-temperature curing epoxy resin glue solution and fiber yarns has excellent mechanical properties and chemical resistance; in addition, the curing temperature is low, the curing time is short, the production period can be greatly shortened, the production efficiency is improved, remarkable social benefits and economic benefits are achieved, and industrial production is facilitated.

The invention belongs to the technical field of leveling mortar, and discloses quick-drying leveling mortar for sticking rock plates as well as a preparation method and application of the quick-drying leveling mortar. The quick-drying leveling mortar for sticking the rock plates comprises the following components in parts by weight: 100 parts of quartz sand, 30-55 parts of cement, 2-4 parts of a diluent, 20-36 parts of an anhydride curing agent, 0.6-1.4 parts of a curing accelerator and 0.3-2 parts of mercaptomethyl polystyrene grafted polyacrylonitrile fibers. The surface of the sulfydryl methyl polystyrene grafted polyacrylonitrile fiber contains a large number of sulfydryl groups, and the sulfydryl groups can be subjected to curing cross-linking reaction with the epoxy resin, so that the curing reaction of the epoxy resin is accelerated, and the curing time of the epoxy mortar is remarkably shortened. The polyacrylonitrile fiber is grafted into an epoxy resin molecular chain through a chemical bonding effect, so that the compatibility and the bonding strength of the polyacrylonitrile fiber and the epoxy resin are enhanced, and the compressive strength and the breaking strength of the leveling mortar are remarkably improved.

The invention discloses a glue supply device of an automatic fiber umbrella rib gluing device, and relates to the technical field of umbrella rib glue coating. Comprising a glue supply mechanism, and the glue supply mechanism comprises a quantitative glue supply assembly, a glue pushing assembly and a glue feeding assembly; the quantitative glue supply assembly comprises a glue bearing barrel, a glue inlet pipe fixedly communicated with the glue bearing barrel and a first liquid one-way valve connected to the glue inlet pipe, and the glue inlet pipe is externally connected with a glue pool. The movable glue head is arranged, the glue pumping holes of the moved glue head all face the lower total glue groove in the corresponding side, the glue in the glue pool is quantitatively pushed into the glue bearing cavity through the quantitative glue supply assembly, and the glue is finally pumped out through the glue pumping holes after being pressurized through the glue pushing assembly, so that the kinetic energy loss caused by blocking of a mold cavity wall to the glue in the prior art is reduced, and the production efficiency is improved. Therefore, the flowing speed of the rubber in the flowing channel on the outer side of the rubber after mold closing is increased, the flowing speed of the rubber in the rubber coating channels transversely distributed on the two sides is increased, the curing time of rubber coating blocks formed by the rubber coating channels is shortened, and the production efficiency is improved.

The invention discloses a plugging composition, a plugging agent for water-based drilling fluid as well as a preparation method and application of the plugging agent. The plugging composition is prepared from the following raw materials in parts by mass: 100 parts of epoxy resin emulsion, 4-35 parts of a curing agent, 0-2 parts of a curing time regulator, 0-15 parts of a flow pattern regulator and 0-50 parts of a propping agent. The plugging composition or the plugging agent for the water-based drilling fluid, which is provided by the invention, is used as an organic thermal initiation consolidation material, has the characteristics of adjustable thickening time in a range of 0.5-10 hours, high cementing strength, high compressive strength and the like, and is suitable for the formation temperature of 60-150 DEG C; the drilling fluid has good compatibility with various fluids such as drilling fluids and saline water, and is particularly suitable for reinforcing well sections prone to leakage and collapse, the pressure bearing capacity of strata is improved, and well wall reconstruction is achieved.

The invention discloses a formaldehyde-free vegetable glue, the formaldehyde-free vegetable glue is a two-component polystyrene foam, the two-component polystyrene foam comprises a glue body and a curing component, and the foaming rate of the formaldehyde-free vegetable glue is 40-80%. The formaldehyde-free vegetable gum prepared by the invention can prolong the operable time, has long development time before hot pressing, and has short curing time after hot pressing. The weight ratio of water to isocyanate in the raw materials is 0.1996: 25, the gel reaction and foaming reaction of the polystyrene foam can be balanced, foaming is uniform, and meanwhile the strength of the board is not affected. In addition, foam holes formed after foaming of the polystyrene foam are uniform small pores, so that the strength of an adhesive layer is improved, and the bonding strength is improved. In the bonding of the sandwich structure of the plate, the bonding strength is high, and the colloid is not easy to damage during stripping.

The invention provides a sheet molding compound resin composite material and a preparation method thereof. The resin composite material comprises the following components in parts by weight: 60-70 parts of unsaturated resin; 30-40 parts by weight of a low shrinkage agent; 0.5-1.5 parts by weight of a curing agent; 0.3-1 part by weight of a polymerization inhibitor; 0.2-1 part by weight of a wetting dispersant; 2-6 parts by weight of an internal release agent; 140-180 parts by weight of an inorganic composite filler; 15-35 parts by weight of zeolite powder; 120 to 150 parts by weight of glass fiber; 2-6 parts by weight of a thickening agent; and 1-2 parts by weight of a deodorant. Through the synergistic effect of the zeolite powder and the deodorant, the peculiar smell of the SMC resin composite material is further reduced, and meanwhile the basic mechanical property of the composite material is kept. According to the preparation method, by regulating and controlling the curing temperature and the curing time, the curing rate of the sheet molding compound resin composite material is increased, and the generation of residual peculiar smell substances which are not completely reacted is reduced.

The invention relates to the technical field of fireproof coatings, in particular to a fireproof coating capable of being rapidly cured in a high-humidity environment and a preparation method of the fireproof coating. Comprising the following raw materials in percentage by mass: 5-20% of film-forming resin, 4-15% of a dispersing solvent, 5-25% of a plasticizer, 0.05-2% of a coupling agent, 30-70% of an expansion system, 5-20% of an inorganic filler and 0.4-2% of reinforced fibers. The fireproof coating provided by the invention is short in curing time, can still be cured especially in a high-humidity environment, can be applied to rainy regions in rainy seasons, is high in curing speed, and avoids influence on construction progress due to rainy seasons; and meanwhile, the cured coating has excellent water resistance, does not blister or fall off within 7 days, does not need to be coated with finish paint in the use process, reduces the construction procedures and saves the cost.

The invention relates to the technical field of adhesives, in particular to a high-temperature reaction type adhesive film as well as a preparation method and a use method thereof. The adhesive comprises 40-60 parts of phenolic resin, 40-60 parts of nitrile rubber, 10-20 parts of tackifying resin, 10-20 parts of reactive resin, 3-9 parts of a curing agent, 0.5-2 parts of a vulcanizing agent, 0.5-2 parts of an accelerant, 5-15 parts of filler, 0.5-1 part of an antioxidant and 1-3 parts of carbon black. According to the invention, the reaction type resin is used, so that the reaction can be rapidly carried out at a certain temperature, the reaction activity of an adhesive system is improved, the adhesion to a bonding substrate is increased, the curing time and the curing pressure can be effectively reduced, and good bonding strength can be achieved under the conditions that the curing time is 2-3 minutes and the minimum curing pressure is 0.4 MPa. And the tackifying resin can provide a small amount of initial viscosity for the adhesive film, and is beneficial to bonding and positioning of the adhesive film. The problems of low curing speed and poor bonding positioning of the phenolic aldehyde-butyronitrile adhesive film are solved, and the industrial application of the adhesive film is favorably expanded. The adhesive film is simple and convenient to operate, quick, efficient, green, environment-friendly, good in comprehensive performance and suitable for the requirements of industrial production.

The invention discloses an adhesive taking waste edible oil as a raw material and a preparation method of the adhesive, and belongs to the technical field of waste resource utilization. The adhesive is prepared from the following components in percentage by mass: 50-60% of waste edible oil, 20-30% of asphalt, 2-5% of a dispersing agent, 2-5% of organic montmorillonite, 5-10% of butadiene styrene rubber, 1-3% of a solubilizer, 1-2% of a cross-linking agent, 1-2% of an anti-aging agent and 5-10% of petroleum resin. The adhesive prepared by the invention has excellent adhesion performance and water resistance, the green and environment-friendly bio-based adhesive with high adhesion strength and high water resistance is obtained by converting waste oil into valuable materials and adopting sustainable sources for preparation, and the problems existing in the traditional adhesive are solved. The waste edible oil is wide in source and low in price, the prepared adhesive is low in cost and has wide market prospects, the adhesive with different viscidity and curing time can be prepared by adjusting the raw material proportion and preparation conditions in the formula, and the requirements of different customers are met.

The invention provides a method for estimating thermal expansion molding process parameters of a foam sandwich composite material, the foam sandwich composite material and a preparation method of the foam sandwich composite material. The estimation method comprises the following steps: testing an expansion pressure-time relation curve of the expandable foam rubber under the conditions of different temperatures and different expansion rates, and when the maximum value of the expansion pressure exceeds 100 kPa, recording a corresponding expansion rate range and a temperature range; testing a viscosity-curing time relation curve of resin in the prepreg at different temperatures, and recording a corresponding temperature range when the curing time does not exceed 10 minutes and the viscosity is not lower than 100 Pa.s; and taking the overlapped part of the recorded temperature range of the expandable foam rubber and the recorded temperature range of the resin as an estimated temperature range of thermal expansion mold pressing, and taking the recorded expansion rate range as an estimated expansion rate range of a thermal expansion mold pressing process. According to the estimation method, the production process stability of the sandwich composite material is improved.

The thermosetting resin composition contains an epoxy resin containing an epoxy compound represented by formula (1), a curing agent, and an inorganic filler. The glass transition temperature of a thermosetting resin composition in which m is 2 and n is 2 in formula (1), measured at a heating rate of 5°C / min using thermomechanical analysis (TMA), is 190°C or more, and the die shear strength of the thermosetting resin composition to copper at 230°C, measured by the following <Procedure>, is 3.0 MPa or more. <Procedure> The thermosetting resin composition is molded using a low-pressure transfer molding machine at a mold temperature of 175° C, an injection pressure of 10 MPa, and a curing time of 120 seconds, and four 10 mm2 test pieces per level are molded on a copper lead frame. Subsequently, the die shear strength between the test piece and the copper lead frame is measured at 230°C using an automatic die shear measuring device. The die shear strength of the four test pieces is adopted.

The invention discloses an efficient production process for environment-friendly resin crafts. The efficient production process for the environment-friendly resin crafts comprises the following steps: S1, filler treatment; s2, preparing a resin system; s3, mold treatment is conducted, specifically, a mold is sprayed with a semi-permanent mold release agent, a mold release agent film layer with the preset thickness is obtained, and the temperature of the mold is preset to 40 DEG C; s4, automatic pouring is conducted, specifically, the pouring curing temperature, pressure and curing time are set as follows: in the gel stage, curing is conducted for 30-60 min at the temperature of 35-40 DEG C and the pressure of 0.3 MPa, so that exhausting is completed, and bubbles of a resin system are reduced; in the main curing stage, curing is performed at 65-70 DEG C and normal pressure for 1-2 hours, so that the crosslinking reaction is accelerated; in the post-curing stage, curing is conducted for 30 min at the temperature of 50 DEG C and the normal pressure, so that internal stress S5, automatic demolding; and S6, finish machining is conducted on the crude product of the environment-friendly resin artware. According to the efficient production process of the environment-friendly resin artware, the curing efficiency of a resin system is enhanced by adjusting temperature control in the pouring process.

The invention relates to the technical field of building engineering materials, and discloses a rapid curing composite salt grouting material with adjustable curing time. The invention discloses a rapid curing composite salt grouting material with adjustable curing time. The rapid curing composite salt grouting material comprises the following raw materials in parts by mass: 20-30 parts of an acrylate mixture, 3-5 parts of a composite nano-porous material and 1-3 parts of a curing agent. According to the rapid curing composite salt grouting material with the adjustable curing time, provided by the invention, the composite nano porous material is added into the acrylate mixture, so that rapid curing of the composite salt grouting material can be realized, and the mechanical property of the composite salt grouting material can be improved.

Curable resin compositions having extended open times at ambient temperatures and short cure times at high temperatures are prepared using a curable resin curable by one or more liquid organic peroxides or blends thereof and an accelerator / activator accelerator comprising a metal salt and a thiol-functionalized organic compound.

The invention discloses a high-speed bonding hot melt adhesive containing OPE wax as well as a preparation method and application of the high-speed bonding hot melt adhesive. The hot melt adhesive comprises the following components in percentage by weight: 10-25% of a main polymer; 40%-60% of tackifying resin; 10%-25% of white mineral oil; 5%-10% of a processing aid; 0.4% to 0.8% of an antioxidant 1010:; 0.1% to 0.3% of an antioxidant 412S; and 5%-25% of OPE wax. The preparation method of the hot melt adhesive comprises the following steps: mixing all the components, vacuumizing, heating and stirring until the materials are completely molten, stopping stirring, and vacuumizing and defoaming. The hot melt adhesive has the advantages of high bonding strength, good antioxidant effect, low viscosity, short curing time and the like, is suitable for non-polar base materials, can meet the production requirements of high-speed production lines, and is simple in preparation method, low in production cost and suitable for large-scale industrial production and application.

The present application relates to the technical field of composite material forming, and particularly relates to a protection treatment method before filling of a core mold of a metal framework with a complex structure. The treatment method comprises the following steps: S100, preparation; S200, preparation of silicone rubber; S300, coating of the filling silicone rubber; S400, filling of the core mold, machining and composite material forming; and S500, completion of product preparation, removal of the core mold and finished product silicone rubber. The treatment method has the advantages of simplifying the operation process, reducing the operation difficulty, improving the labor efficiency, shortening the curing time, making the coating uniform and complete, shortening the protection time of the whole framework, being suitable for the wide temperature range post-curing process requirement, effectively buffering and eliminating the damage of the removal tool to the metal framework, avoiding the resin from entering the hollow hole and the part with a rib plate included angle during the resin pouring process, reducing the difficulty of the core mold removal and the framework cleaning in the later period, and being easier to clean and remove without residue.

The invention relates to a pre-water-control composite plugging agent for old well refracturing and a preparation method thereof, and belongs to the field of reservoir transformation. The composite plugging agent is prepared from the following raw materials: water-borne epoxy resin emulsion, a curing agent, cement, a dispersing agent, nylon fibers and magnesium oxide, wherein the mass ratio of the water-borne epoxy resin emulsion to the curing agent to the cement to the dispersing agent to the nylon fibers to the magnesium oxide is (10 to 15) to (10 to 13) to (18 to 25) to (0.4 to 0.6) to (0.2 to 0.6) to (0.04 to 0.08). Epoxy resin EP-20 is used as a raw material to synthesize a water-borne epoxy resin emulsion, then the water-borne epoxy resin emulsion, the curing agent, the cement, the dispersing agent, the nylon fiber and the magnesium oxide are scientifically matched, the front water control composite blocking agent is obtained, the viscosity of the blocking agent during injection is reduced, and the injection construction efficiency is improved; and the curing time of the plugging agent is greatly shortened by adding magnesium oxide.

The invention discloses an epoxy resin four-stage curing process optimization method based on multi-temperature gradient and epoxy resin. The optimization method comprises the following steps: S1, determining a four-stage curing temperature platform and heating buffer time; and S2, optimizing the curing temperature X1 and the curing time X2 of the four stages based on a response surface method, regulating and controlling the curing rate under each temperature platform to be always in a set dynamic equilibrium interval, performing quadratic polynomial regression modeling according to the curing temperature X1, the curing time X2, the maximum curing rate Y1 and the minimum curing rate Y2, and determining optimal four-stage curing process parameters. When the epoxy resin is prepared by using the optimization method, the problems of residual stress concentration, microcracks, warping and the like caused by large temperature difference and non-uniform curing rate in a traditional two-stage curing process can be solved, and staged release of residual stress and effective improvement of curing uniformity can be realized; therefore, the balance between epoxy resin curing uniformity and production efficiency is realized.

The invention discloses a preparation method of elastic resin clay, and relates to the technical field of resin clay processing, the elastic resin clay comprises formula materials and a preparation method, the formula materials comprise a master batch, a plasticizer, calcium carbonate, a preservative, an anti-aging agent, a coloring agent, white carbon black and others, the material proportion comprises 100 parts of master batch, 20-40 parts of plasticizer, 20 parts of calcium carbonate, 1 part of preservative, 2 parts of anti-aging agent, 0.05 part of coloring agent and 5 parts of white carbon black, preliminary curing is carried out in a room temperature or low temperature oven, the time is determined according to the type and thickness of resin, the resin is taken out and placed after being dried, curing is carried out again after standing for 1 hour, final standing is carried out after secondary curing is completed, and the finished product is obtained. And finally, carrying out surface treatment, such as grinding, polishing or coating treatment, according to requirements so as to improve the appearance and the hand feeling. Through the steps, a novel elastic resin clay processing technology can be designed, and a high-performance and multi-purpose elastic resin clay product can be produced.

The present invention relates to thermosetting epoxy resin compositions comprising a liquid epoxy resin A1, a liquid epoxy resin E that is a glycidyl ether of difunctional saturated, branched or unbranched, cyclic or open-chain C2-C30 alcohols and a dihydrazide curing agent, wherein the weight ratio of the at least one liquid epoxy resin A1 to the at least one liquid epoxy resin E (A1 / E) is from 3.0 - 8.5. The compositions feature good mechanical properties, especially lap shear strength and impact peal performance, after shorter curing times at lower temperatures, especially 10 minutes at 140°C and provide sufficient open time stability and corrosion resistance. The epoxy resin compositions are especially suitable for use as bodywork adhesive.

The invention provides a curing prediction method of a wood prepreg, a preparation method of a wood recombination material and the wood recombination material. The method comprises the following steps: at different curing temperatures, measuring the curing degrees of a resin material at different curing times; obtaining a curing conversion rate curved surface; the method comprises the following steps: impregnating a wood unit by using a resin material, and drying to obtain a wood prepreg; on the basis of the curing conversion rate curved surface, curing time and curing temperature of the wood prepreg corresponding to different curing degrees are obtained, hot pressing treatment is conducted on the wood prepreg on the basis of the curing time and the curing temperature, and forming bodies with different curing degrees are obtained; measuring the physical and mechanical properties of each formed body; carrying out nonlinear relation fitting on the curing degree and the physical and mechanical properties of the molded body to obtain a relation curve; and providing a to-be-tested wood prepreg, obtaining a curing degree target value based on the physical and mechanical property target value, and obtaining optimized hot pressing process conditions of the to-be-tested wood prepreg based on the curing conversion rate curved surface.

The present invention relates to a method for preparing thick composite laminated timber, comprising the following steps: S100, preparing a blank; S200, forming a finished product, wherein forming the finished product specifically comprises: S210, treating a bonding surface of the blank, and S220, preparing an adhesive, the adhesive comprising 100 parts by weight of an epoxy resin, 25-70 parts by weight of a curing agent, 10-30 parts by weight of a toughening agent, and 0.5-5 parts by weight of a coupling agent, and uniformly mixing said components in proportion; S230, uniformly coating the bonding surface with the adhesive, wherein the adhesive is coated in an amount of 200-1000 g / m2; S240, curing the adhesive; and S300, performing molding. The method for preparing thick composite laminated timber has the advantages that a plurality of prepreg layers are molded to form thin blanks, and then the plurality of blanks are formed into the thick composite laminated timber by means of adhesive curing; thus, the product curing time is shortened, the production efficiency is improved, the product appearance quality and mechanical strength are not affected, and the occurrence of core burning is avoided.

Curable resin compositions having extended open limes al ambient temperatures find short cure times at elevated temperatures are prepared using a curable resin winch is curable with one or more liquid organic peroxides or a blend thereof and an accelerator / activator promoter comprising a metal salt and a thiol-functionalized organic compound.

The invention belongs to the technical field of floor coatings, and provides a wear-resistant epoxy floor coating and a preparation method thereof, the wear-resistant epoxy floor coating is prepared from the following raw materials by mass: 50-80 parts of epoxy resin, 10-25 parts of phenolic resin, 5-8 parts of an active diluent, 1-5 parts of a dispersant, 3-8 parts of a curing agent, 3-8 parts of a modifier, 30-40 parts of a filler, 1-10 parts of an organic solvent, 2-5 parts of nano Al2O3, and 1-5 parts of a wetting agent. According to the epoxy floor coating, mixed resin of bisphenol A epoxy resin and bisphenol F epoxy resin is adopted, the wear resistance of the coating can be remarkably improved, the hardness and durability of the coating can be improved by optimizing the ratio of the resin to the curing agent, it can be ensured that the coating is moderate in viscosity and easy to construct due to addition of the auxiliaries, the curing time is shortened, and the service life of the coating is prolonged. The construction efficiency is improved.

To provide a polyurea resin composition production raw material which enables production of a coating material that has curing time suitable for hand coating and is excellent in sagging resistance and defoaming resistance of a coating film, and enables formation of a cured product that is excellent in adhesion to a base material, and a polyurea resin composition.SOLUTION: A polyurea resin composition production raw material contains a component (A) containing a polyisocyanate compound (a), and a component (B) containing a polyamine compound (b), and satisfies all the following conditions (1) to (4). (1) Residual viscosity after 30 seconds from mixing of all the components including the component (A) and the component (B) is 1,500 mPa s or more and 20,000 mPa s or less. (2) Residual viscosity after 30 seconds from mixing of all the components including the component (A) and the component (B) is 1,500 mPa s or more and 30,000 mPa s or less, and viscosity after 30 minutes from the mixture is 100,000 mPa s or less. (3) A coefficient of kinematic viscosity after 30 seconds from mixture of all the components including the component (A) and the component (B) is 1,200 m2 / s or more and 30,000 m2 / s or less. (4) Surface free energy of a cured product of a polyurea resin composition obtained from the polyurea resin composition production raw material is 30 mN / m or more and 63 mN / m or less.SELECTED DRAWING: None

The invention relates to a process for improving adhesive force of a butyl rubber plug crown surface coating, and belongs to the field of rubber materials. After the vulcanized molded rubber plug is cooled, impurities attached to the surface of the crown of the molded rubber plug due to the electrostatic action are removed through an electrostatic hair impurity removing machine; vulcanized residual silicone oil on the surface of the crown part of the molding rubber plug is removed through a liquid nitrogen oil removal device; the mold forming rubber plug is preheated, and the heating temperature ranges from 140 DEG C to 160 DEG C; a polysiloxane coating is evenly sprayed to the surface of the crown of the rubber plug through a high-pressure spray gun to be heated and cured, the curing temperature ranges from 120 DEG C to 130 DEG C, and the curing time ranges from 10 min to 15 min; and transferring the molded rubber plug into a dry and ventilated environment, standing and curing at normal temperature for at least 2 hours, then carrying out edge removal and light inspection, adding no silicone oil during cleaning, and normally packaging as required. By using the process provided by the invention, fine solid impurities and vulcanized residual silicone oil attached to the surface of the crown part of the molded rubber plug can be quickly and effectively removed, and the adhesive force of the surface coating of the butyl rubber plug is effectively improved.