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31 results about "Cure time" patented technology

Cure time refers to the length of time needed for something to fully cure. Many substances need cure time to fully cure. Examples are: epoxies, glues, resins, concrete, etc. In a rubber compound, cure time is the length of time to reach optimum viscosity or modulus at a certain temperature.

Toughening type curing-controllable prepreg and preparation method thereof

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.
Owner:MODERN TEXTILE TECH INNOVATION CENT (JIANHU LAB) +1

Method for estimating thermal expansion molding process parameters of foam sandwich composite material, foam sandwich composite material and preparation method of foam sandwich composite material

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.
Owner:SAIC MOTOR

Thermosetting resin composition and power module

PCT designated stageWO2026155132A1Injection pressurePolymer science
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.
Owner:SUMITOMO BAKELITE CO LTD

High-speed bonding hot melt adhesive containing OPE wax as well as preparation method and application of high-speed bonding hot melt adhesive

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.
Owner:FOCUS HOTMELT CO LTD

A protection treatment method for a complex structure metal framework core mold before filling

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.
Owner:CHINA SHIPBUILDING INDUSTRY CORPORATION NO725 RESEARCH INSTITUTE

Epoxy resin four-section curing process optimization method based on multi-temperature gradient and epoxy resin

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.
Owner:CHINA ELECTRIC POWER RESEARCH INSTITUTE CO LTD +2

Method for preparing thick composite laminated timber

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.
Owner:LUOYANG SUNRUI RUBBER & PLASTIC SCIENCE & TECHNOLOGY CO LTD

A glue-reducing wall-penetrating terminal capable of preventing copper bar position deviation

The utility model provides a kind of glue reduction wall-penetrating terminal for preventing copper bar position deviation, including terminal main body, it is characterized in that, the terminal main body is equipped with multiple glue storage grooves, the glue storage groove is a blind hole structure, the top of the glue storage groove is upper opening, the upper opening is horn shape structure, the end of the glue storage groove is lower passage, the width of the lower passage gradually decreases from top to bottom, the inner wall of the glue storage groove is equipped with the baffle of opposite arrangement, gap for inserting copper bar is equipped between baffle;The baffle is arranged between the upper opening and the lower passage, and the gap height between the upper end of the baffle and the bottom of the upper opening is less than the gap height between the lower end of the baffle and the top of the lower passage.The utility model can occupy the space in glue storage groove by baffle, so as to reduce the amount of glue, reduce glue cost, accelerate glue curing time, also greatly reduce copper bar side deviation influence.
Owner:SHANGHAI FOUND AUTOMATIC EQUIP CO LTD

Forming process and forming die for large-size composite material

PendingCN121756627AFiberResin adhesive
The invention relates to a forming process for a large-size composite material, which comprises the following steps: designing a mold, enabling a gap to exist between a mold cavity and a top plate, and combining the mold; cutting fiber cloth, soaking the fiber cloth in the resin glue solution, and paving the fiber cloth in the mold cavity; the top plate covers the fiber cloth layer group, and the whole mold is placed on a molding press; mold closing is conducted, the top rib plate and the upper edge of the long-side panel are tightly pressed, and therefore redundant resin glue liquid overflows along the gap in the mold closing process; the top rib plate and the upper reinforcing rib are locked through an outer hexagon bolt; uniformly curing the mold in a drying oven; and taking out the product after curing, and cleaning the mold to obtain the composite material product. And in the mold closing process, redundant resin glue liquid overflows from the gap and is directly reserved at the top of the top plate, so that post-treatment is facilitated, and the procedure of cleaning the overflowed glue is simplified. And the mold is directly put into the drying oven for curing treatment, so that the curing time is saved, the consistency of the curing degree is improved, the quality is improved, and the production efficiency is improved.
Owner:SHANGHAI CHINA SHIPBUILDING MATERIALS ENG CO LTD +1

Gluing method, gluing device and storage medium for constructing embankment by local solidification

The application relates to the gluing technical field and discloses a gluing method for constructing a dam by using local solidification, a gluing device and a storage medium. The gluing method comprises the following steps: dividing glue into external liquid glue and internal liquid glue; spraying the external liquid glue and the internal liquid glue at the same time according to a first control instruction; performing solidification treatment on the external liquid glue to construct an external dam according to a second control instruction; coating the external dam and the internal liquid glue on a product to be glued according to a third control instruction; and performing solidification treatment on the external dam and the internal liquid glue sprayed on the product to be glued at the same time according to a fourth control instruction. In the gluing process, the external liquid glue is first subjected to solidification treatment to construct an external dam, so that the internal liquid glue is prevented from flowing out of the external dam to form a glue layer of the internal liquid glue in the external dam; the external dam and the internal liquid glue are simultaneously solidified in the later period, a better glue form is obtained, the solidification time is shortened, and the gluing production efficiency is improved.
Owner:YISHI ZHITONG TECH SHENZHEN CO LTD

Old house transforming and renovating glue and preparation method thereof

The invention relates to the technical field of building glue, and discloses old house transforming and renovating glue and a preparation method thereof.The old house transforming and renovating glue is prepared from, by weight, 34-50 parts of quartz sand, 28-43 parts of cement, 15-22 parts of gypsum powder, 0.2-0.4 part of water glass, 0.8-3 parts of phosphate phenolic resin, 32-45 parts of water and the like. According to the invention, the phosphate phenolic resin is used for pre-dispersing the quartz sand, so that the dispersity of the quartz sand is improved, the performance of the renovating glue is enhanced, and the phenolic resin has a certain adhesive property and plays a role of a cementing agent in the renovating glue, so that the initial curing time is shortened, the adhesive strength is improved, and the service life of the renovating glue is prolonged. And the phenolic resin is beneficial to improving the water resistance and water resistance of the renovating glue.
Owner:GUANGDONG HERUI INTELLIGENT MFG NEW MATERIAL CO LTD

A starch-based particleboard adhesive that cures rapidly at medium and low temperatures and its preparation method

This invention discloses a starch-based particleboard adhesive that cures rapidly at medium and low temperatures and its preparation method, belonging to the field of adhesive preparation technology. The starch-based particleboard adhesive of this invention comprises component A and component B; component A includes: 150 parts starch, 200-300 parts water, 20-25 parts concentrated hydrochloric acid, 12-18 parts dilute nitric acid, 25-40 parts sodium hydroxide solution, 6-9 parts initiator, 27-35 parts grafted monomer, and 2-5 parts emulsifier; component B includes: 8-11 parts ethylenediamine, a post-crosslinking agent. This starch-based particleboard adhesive effectively solves the problems of high curing temperature and long curing time in existing starch adhesives. While maintaining a relatively fast curing speed, it can reduce the curing temperature to 105℃, reducing the energy consumption in particleboard production. It can be widely used in the hot-press bonding of particleboard, plywood, fiberboard, and wood blocks.
Owner:JIANGNAN UNIV

Single-component low-modulus epoxy pouring sealant and preparation method thereof

The invention discloses a single-component low-modulus epoxy pouring sealant, which is prepared from the following raw materials in parts by weight: 80 to 200 parts of epoxy resin, 30 to 150 parts of curing agent, 100 to 600 parts of filler, 1 to 10 parts of accelerant, 1 to 14 parts of additive and 0.1 to 2 parts of pigment. The pouring sealant disclosed by the invention can be directly used, and double components do not need to be mixed when being used, so that the introduction of bubbles is avoided, and the uniformity and stability of the pouring sealant are improved. The composition has the advantages of low modulus, low curing temperature and short curing time, reduces curing conditions, and avoids the influence on electronic devices. Compared with the prior art, the pouring sealant has the advantages that the modulus after curing is relatively low, internal stress is favorably released, the phenomena of bulging, cracking, shelling and the like of the pouring sealant during long-time working or high-low temperature circulation are reduced, and the high-temperature stability and the elastic modulus can be balanced, so that the pouring sealant has more excellent high-low temperature resistance.
Owner:YIK SHING TAT (SHENZHEN) NEW MATERIAL CO LTD

Environment-friendly two-component foam paste filling material as well as preparation method and application thereof

PendingCN121249132APolyolPhosphate
The invention discloses an environment-friendly two-component foam paste filling material and a preparation method thereof. The material is prepared by mixing a component A and a component B, the component A comprises a sodium silicate aqueous solution, polyether polyol, a polyol chain extender, liquid phosphate, a heat-conducting cooling agent, water and other raw materials, wherein the heat-conducting cooling agent is a compound of expanded graphite and hydrotalcite; and the component B comprises polyisocyanate and a diluent. According to the grouting material, heat is shunted through the gelation reaction of sodium silicate, heat dissipation is accelerated and reactant contact is blocked through the synergistic effect of the heat conduction cooling agent, the reaction rate is slowed down through liquid phosphate, effective control over reaction heat release is achieved, the peak temperature can be reduced to 94 DEG C or below, meanwhile, high compressive strength, good flame retardance and proper curing time are kept, and the service life of the grouting material is prolonged. And the potential safety hazard of gas explosion caused by high temperature of the grouting material is solved.
Owner:SHANDONG SHANSHENG INTELLIGENT EQUIPMENT CO LTD

A renovation adhesive for old houses and a preparation method thereof

The application relates to the technical field of building glue, and discloses old house reconstruction renovation glue and a preparation method thereof. The old house reconstruction renovation glue comprises 34-50 parts by weight of quartz sand, 28-43 parts by weight of cement, 15-22 parts by weight of gypsum powder, 0.2-0.4 parts by weight of water glass, 0.8-3 parts by weight of phosphate phenolic aldehyde resin, 32-45 parts by weight of water and the like. The phosphate phenolic aldehyde resin is used for pre-dispersing treatment of the quartz sand, the dispersibility of the quartz sand is improved, the performance of the renovation glue is improved, the phenolic aldehyde resin itself has certain bonding performance, plays the role of a cementing agent in the renovation glue, the initial setting time is reduced, the bonding strength is improved, and the phenolic aldehyde resin is beneficial to improving the water resistance of the renovation glue.
Owner:GUANGDONG HERUI INTELLIGENT MFG NEW MATERIAL CO LTD

Accelerated peroxide curing resin composition with long open time

Curable resin compositions with a long open time at room temperature and a short curing time at high temperatures are produced using a curable resin that can be cured with one or more liquid organic peroxides or mixtures thereof, and an accelerator / activator accelerator containing a metal salt and a thiol-functionalized organic compound.
Owner:ARKEMA INC

Adhesive composition, adhesive laminate, and composite member

Provided is a technique for bonding a laminate in which the curing time of an adhesive is short and the stress relaxation performance is excellent. An adhesive laminate (10) according to one embodiment of the present invention is provided with: a substrate layer (30) containing a non-woven fabric; and an adhesive layer (20) that contains an adhesive and is laminated on one main surface of the base material layer (30). A pressure-sensitive adhesive impregnated layer (32) impregnated with the pressure-sensitive adhesive is formed in a portion of the base material layer (30) on the side adjacent to the pressure-sensitive adhesive layer (20). The binder includes a thermosetting resin, a thermoplastic resin, and a curing agent. The thermosetting resin includes a maleimide resin and a resole resin. The thermoplastic resin contains an acid-modified nitrile rubber. The curing agent contains an imidazole having a reaction initiation temperature of 70 DEG C or higher.
Owner:TOMOEGAWA CORP

Special environment-friendly water-based glue for inner core of fireproof door and preparation method thereof

The invention belongs to the technical field of emulsion, and relates to an environment-friendly water-based glue special for an inner core of a fireproof door and a preparation method of the environment-friendly water-based glue special for the inner core of the fireproof door. 5 to 10 parts of deionized water; 0.15 to 0.3 part of a defoaming agent; 0.1 to 0.5 part of a pH regulator; 0.2 to 0.7 part of a thickening agent; 1.5-2 parts of a coalescing agent; 0.5-1 part of a dispersant; 30-40 parts of heavy calcium powder; and 10-15 parts of talcum powder. The preparation method comprises the following steps: firstly, adding the polyacrylate polymer and the deionized water into a reaction kettle, stirring, controlling the stirring speed to be 300-500r / min until the mixture is uniform, then sequentially adding the pH regulator, the coalescing agent, the dispersing agent and the defoaming agent, continuously stirring for 15-20 minutes, then adding the heavy calcium carbonate and the talcum powder, simultaneously adjusting the rotating speed to be 600-900r / min, uniformly mixing, then adding the dispersing agent and the defoaming agent, continuously stirring for 15-20 minutes, and uniformly mixing to obtain a finished product. And adding the thickening agent according to a small-amount and multi-time principle until the viscosity is qualified to obtain a finished product. The product disclosed by the invention has the advantages of extremely low VOC (Volatile Organic Compounds), no combustion or explosion, small odor, convenience in construction and the like, can be comparable with a double-component product in the aspects of paint film hardness, cohesiveness and the like, and is short in curing time and low in cost.
Owner:HENGSHUI XINGUANG CHEM

Composite plugging agent for formation malignant leakage and preparation method thereof

The application provides a composite plugging agent for formation malignant leakage and a preparation method thereof, and belongs to the technical field of chemical materials. The composite plugging agent is prepared by compounding an associated polymer gel and etherified phenolic aldehyde resin. The curing time of the composite plugging agent is controlled by temperature, and the composite plugging agent can be cured in 1.5 hours at 140 DEG C. The compressive strength of the cured composite plugging agent can reach 95.7 MPa, and the maximum breakthrough pressure of the cured composite plugging agent can reach 2.8 MPa. The composite plugging agent can effectively plug formation cracks, and the plugging effect is obvious.
Owner:CHINA PETROLEUM & CHEMICAL CORP +1

Nano-kaolin modified hydraulic lime-based composite materials and their preparation and application

ActiveCN116655340BScale adjustableHigh reactivityCement productionKaolin claySlurry
This invention relates to a nano-metakaolin-modified hydraulic lime-based composite material and its preparation and application. The composite material comprises natural hydraulic lime and nano-metakaolin dispersed in the natural hydraulic lime, wherein the mass ratio of natural hydraulic lime to nano-metakaolin is (60-90):(10-40). The nano-metakaolin-modified hydraulic lime-based composite material of this invention exhibits controllable dispersibility and fluidity in the slurry after mixing with water. It also demonstrates good rock compatibility, low soluble salt content, controllable curing time, suitable post-curing strength, low permeability, and low shrinkage and expansion rate. The presence of a repair agent can specifically enhance the additional protective performance of the reinforcement material. It possesses high applicability, safety, and durability for the protection of stone cultural relics, without causing derivative damage.
Owner:FUDAN UNIVERSITY +1

A method for monitoring the strength development of microwave-cured concrete

The application discloses a microwave curing concrete strength development monitoring method, and relates to the field of performance testing of concrete materials. The method comprises the following steps: obtaining and preprocessing microwave curing parameters and short-term compressive strength of standard concrete test pieces, establishing a mathematical model of the microwave curing parameters and the short-term compressive strength of the standard concrete test pieces, and generating an optimal microwave curing parameter combination; based on the optimal microwave curing parameter combination, generating microstructure parameters; based on a temperature field and an apparent activation energy, calculating an equivalent age; and based on the short-term compressive strength, the microstructure parameters and the equivalent age, predicting the standard curing strength of the concrete standard curing time through a microwave curing concrete 28-day strength prediction algorithm. The method solves the problems that existing microwave curing concrete strength monitoring methods are difficult to guide parameter optimization, difficult to reveal the internal mechanism of strength formation, and difficult to accurately predict the 28-day standard curing strength through short-term data.
Owner:LONGJIAN ROAD & BRIDGE CO LTD

Styrene-free epoxy vinyl anchor adhesive and preparation method thereof

The invention discloses a styrene-free epoxy vinyl anchor adhesive and a preparation method thereof, the anchor adhesive comprises a component I and a component II, the component I comprises the following components in parts by weight: 100 parts of allyl glycidyl ether modified epoxy vinyl ester resin, 5-12 parts of a thixotropic agent, 0.5-3 parts of a silane coupling agent and 50-150 parts of a filler; and the component II comprises a curing agent. Allyl glycidyl ether is adopted to modify epoxy vinyl resin, and an epoxy group reacts with hydroxyl to generate ether, so that the toughness is obviously enhanced, meanwhile, more carbon-carbon double bonds are introduced, the crosslinking density of a cured product is improved, the curing time is shortened, and the bonding strength is obviously improved. The multifunctional vinyl monomer is added, so that the tensile strength of the material can be remarkably improved by forming a three-dimensional network structure, the hydrolysis-resistant stability of the resin can be improved by shielding ester bonds in the resin, and meanwhile, volatilization of styrene and harm to human health and the environment caused by volatilization of styrene are avoided.
Owner:JIANGSU DALISHI YUNSHI NURSING MATERIAL CO LTD

Production method of resin block

The invention relates to the technical field of resin blocks, and discloses a production method of a resin block, which comprises the following steps: S1, burdening; s2, mixing; s3, heating and curing; s4, cooling; s5, demolding is conducted; s6, carrying out post-treatment; s7, quality inspection and testing; and S8, packaging and storing. By reasonably regulating and controlling mixing equipment, stirring time, rotating speed and the like, the mixing efficiency of resin powder and a curing agent can be improved, the production problem caused by non-uniformity of raw materials is avoided, the heating curing process and the cooling process are accurately controlled, optimization of curing time and temperature is ensured, and excessive curing or incomplete curing is avoided; according to the method, the controllability of the production process can be realized through definite operation steps and parameter control (such as heating temperature, mixing time and rotating speed), so that the stability of the product quality is ensured, and a strict quality inspection and recording system is provided, so that the product quality tracing becomes clearer, and the problems possibly occurring in the production can be conveniently analyzed and solved.
Owner:NANJING CHENGLIAN MEDICAL TECHNOLOGY CO LTD

Pipeline lining repairing process

PendingCN120907035APipe elementsEpoxyAdhesive
The invention discloses a pipeline lining repairing process, and relates to the technical field of pipeline repairing, the process comprises the following steps: pretreating the inner wall of a pipeline by adopting a mode of combining mechanical cleaning and chemical cleaning, so that the inner wall of the pipeline reaches Sa2-grade cleanliness, and the surface roughness is controlled to be Ra25-55 microns; an epoxy resin-based binder is uniformly coated, the thickness is 0.25-0.55 mm, and the curing time is adjustable; the fiber reinforced composite material flexible liner is attached to the inner wall of the pipeline through an air pressure overturning method, and the lap joint width is not smaller than 6 cm; a segmented gradient curing process is adopted, pre-curing is conducted for 2-3 hours under the pressure of 0.1-0.3 MPa, and then the temperature is increased to 40-80 DEG C for final curing. In addition, the technology further comprises the steps of quality detection, pressure testing before repairing and preservative treatment after repairing. The process has the advantages of efficient repairing, firm bonding, high adaptability, reliable quality, good corrosion resistance and the like, the service life of the pipeline is remarkably prolonged, the maintenance cost is reduced, and the process is suitable for repairing pipelines with various corrosion degrees.
Owner:SHANGHAI MINBAO MUNICIPAL MAINTENANCE CO LTD

Quick-drying leveling mortar for sticking rock plates and preparation method and application thereof

The application belongs to the technical field of leveling mortar, and discloses quick-drying leveling mortar for sticking rock plates and a preparation method and application thereof. The quick-drying leveling mortar for sticking rock plates comprises 100 parts by weight of quartz sand, 30-55 parts by weight of cement, 2-4 parts by weight of a diluent, 20-36 parts by weight of an acid anhydride curing agent, 0.6-1.4 parts by weight of a curing accelerator, and 0.3-2 parts by weight of mercaptomethyl polystyrene grafted polyacrylonitrile fiber. The mercaptomethyl polystyrene grafted polyacrylonitrile fiber contains a large number of mercapto groups on the surface, can undergo a curing cross-linking reaction with epoxy resin, accelerates the curing reaction of the epoxy resin, and significantly reduces the curing time of the epoxy mortar. The polyacrylonitrile fiber is grafted into the molecular chain of the epoxy resin through chemical bonding, enhances the compatibility and bonding strength of the polyacrylonitrile fiber and the epoxy resin, and significantly improves the compressive strength and the bending strength of the leveling mortar.
Owner:GUANGDONG HERUI INTELLIGENT MFG NEW MATERIAL CO LTD

Two-component bio-based polyurethane elastic structural adhesive and preparation method thereof

The invention relates to the technical field of elastic structural adhesives, in particular to a bi-component bio-based polyurethane elastic structural adhesive and a preparation method thereof.The elastic structural adhesive is composed of a component A and a component B. The component A comprises oligosaccharide polyol, bio-based polyol, a bio-based chain extender, a molecular sieve, a fumed silica thixotropic agent and a catalyst; and the component B comprises bio-based isocyanate and a derivative thereof, a modified castor oil derivative, dimer acid polyol and a fumed silica thixotropic agent. The full-biological elastic structural adhesive is environment-friendly and sustainable, also has excellent mechanical properties, is suitable for sealing and bonding application in a high-temperature environment, is controllable in curing time, and has good compatibility and processability.
Owner:上海聚利珑新材料科技有限公司

Anticorrosive coating for oil storage tank and preparation method thereof

ActiveCN118685100BSilicic acidFirming agent
The present application relates to the technical field of epoxy anticorrosive paint, in particular to an anticorrosive paint for oil storage depot and a preparation method thereof, which is cured after being coated by two-component compounding, and the obtained anticorrosive coating has excellent adhesion, hydrophobicity, oil repellency, heat resistance and chemical corrosion resistance, and is particularly suitable for the anticorrosion of oil storage depot. In the A component, bisphenol A type epoxy resin is used as the main material, and modified epoxy resin prepolymer, active diluent, nano zinc silicate, coupling agent, dispersant and defoaming agent are added to synergistically improve the overall adhesion, hydrophobicity, oil repellency, heat resistance and chemical corrosion resistance. The amine curing agent and curing accelerator jointly act to promote the curing of the system, shorten the curing time, and reduce the curing temperature to 25 DEG C for 8-10h or 70 DEG C for 2-3h to achieve complete curing, thereby avoiding the adverse effects of high-temperature curing on the oil storage depot.
Owner:SHENZHEN JIAN NANOCOMPOSITES CO LTD

Production process for improving quality of styrene-free button resin finished product

The invention relates to the technical field of resin production, in particular to a production process for improving the quality of a styrene-free button resin finished product, which comprises the steps of feeding, nitrogen replacement, multi-stage heating reaction, small material addition, dilution, heat preservation adjustment, defoaming and filtration, and HTPB modified polyester and IBOMA monomer are compounded, so that the pattern definition of a processed button is improved, and the quality of the button is improved. According to the process, the size change rate is further reduced, the cutting qualification rate is effectively improved, the problems that patterns in a traditional process are fuzzy and prone to deformation are solved, a KH-570 + F5 + F3-1 multicomponent compatible system is combined with a polyether type defoaming agent, the light transmittance and glossiness of a produced finished product are improved, the defects of mist and pinholes do not exist, the appearance quality meets the requirement of a high-end button, and the production cost is reduced. A BPO-TBPB-DMA composite initiation promotion system is matched with 180 DEG C transition heat preservation, the curing time is shortened to 25-35 min, the yellowness index is smaller than or equal to 3, and yellowing caused by the high use amount of an initiator is avoided.
Owner:ZHEJIANG LONGXIN CHEM CO LTD

Door and window glue injection rapid curing method

The invention relates to a door and window glue injection rapid curing method which comprises a curing furnace and a cooling furnace which are sequentially designed in series, conveying mechanisms are arranged in the curing furnace and the cooling furnace, and the rapid curing method comprises the following steps that S1, the highest tolerable temperature, the glue injection thickness and the glue injection door and window size of each component of a glue injection door and window are obtained; s2, the minimum value in all the highest tolerable temperatures is taken and optimized to obtain the curing temperature, and the temperature of a curing oven is set according to the curing temperature; s3, calculating preheating time and curing time; the conveying speed is obtained; s4, the cooling time and the cooling temperature are calculated, and the temperature of a cooling furnace is set according to the cooling temperature; and S5, the conveying mechanism drives the glue injection door and window to be rapidly cured through a curing furnace and then rapidly cooled through a cooling furnace, and glue injection curing is completed. Accurate and efficient curing of glue injection doors and windows is achieved in a heating curing and rapid cooling mode, the curing time of the glue injection process is remarkably shortened, and the production efficiency of the doors and windows is greatly improved.
Owner:JINAN KANGHONG MASCH CO LTD