42results about How to "Fast curing at room temperature" patented technology

The invention relates to a bi-component modified epoxy adhesive for compounding a marble veneer with base materials such as a marble slab, a granite slab, a porcelain slab and a preparation method thereof. The adhesive comprises a component A and a component B, wherein the component A is prepared from epoxy resin, polyether, torispherical silicon micro-powder, heavy calcium carbonate and an auxiliary agent; and the component B is prepared from homemade modified amine, polyether amine, the torispherical silicon micro-powder, the heavy calcium carbonate and the auxiliary agent. The product has the characteristics of room temperature curing, high bond strength, water, heat and freeze-thaw resistance, low cost, convenient construction and the like.

The invention relates to a curing agent, namely, 4, 4 (1)-diphenylmethane diisocyanate prepolymer and a preparation method thereof. The method comprises the steps that molten 4, 4(1)-MDI and an organic solvent are added into a reaction vessel, and stirred uniformly, the temperature is raised to 65 DEG C, polyhydric alcohol dehydrated through evacuation is added, to react for 2 to 4 hours at 60 to 100 DEG C, and then an MDI modifier is produced; when being stirred, the mixed liquor of trimethylol propane and the organic solvent is titrated into the reaction vessel for 1 to 4 hour(s), the titration temperature is 60 to 100 DEG C, heat preservation and reaction are performed for 1 to 3 hour(s), then the temperature is raised to 90 to 100 DEG C and the heat preservation and the reaction are performed again for 1 to 4 hour(s), the temperature is reduced, and the organic solvent is added for dilution to appropriate viscosity. The curing agent has the advantages that the application scope is broad, the molecular structure of the polyhydric alcohol can be adjusted according to the requirements of users to produce the prepolymer of polyurethane coating, adhesive, and the curing agent, the storage stability is good, the curing speed is quick, the toxicity is low, the price is low, products with high solid content can be obtained, etc.

The invention relates to a room curing fluoro rubber adhesive and a preparation method, solving the problems of low initial adhesive force, low curing rate and low adhesive intensity of current fluoro rubber adhesives. The adhesive of the invention comprises a component A and a component B; wherein, the component A is prepared by a fluoroelastomer compound, an epoxy resin, polyurethane emulsion and organic solvent; the component B is prepared by an organic amine curing agent, a silane coupling agent and solvent. The method is as follows: a. compounding raw fluorubber, an acid-acceptor, reinforcing fillers and a vulcanizing agent, dissolving the components in the organic solvent, adding the epoxy resin and polyurethane emulsion and evenly stirring the mixture to obtain the component A; b. evenly stirring the organic amine curing agent, silane coupling agent and organic solvent to obtain the component B. The adhesive of the invention has the advantages of high initial adhesive force, high room curing rate and adhesive intensity and can be used for adhesion of the fluorubber and metallic materials. The preparation of the adhesive is simple in technology and low in cost.

The invention relates to an epoxy resin injecting paste material for the maintenance of road engineering and a preparation method thereof. The preparation method of the epoxy resin injecting paste material comprises the following steps of: (1) preparing an epoxy component A: mixing bisphenol A type epoxy resin with an activated thinner, and uniformly stirring at normal temperature so as to obtain the epoxy component A; (2) preparing a curing agent component B: mixing modified aliphatic polyamine with a curing accelerator DMP-30, and uniformly stirring at normal temperature so as to obtain the curing agent component B; (3) preparing through mixing: when in use, mixing the epoxy component A prepared from the step (1) with the curing agent component B prepared from the step (2) at normal temperature with the mixed ratio of 100:17-90, and stirring to obtain the epoxy resin injecting paste material. The invention cure fast at normal temperature and has better adhesion on a moist surface so that moist and incompact grits, gravel, and the like which are contained in a roadbed are adhered into a firm integer to a role of jointly bearing heavy loads of a road surface; and in addition, the invention has excellent mechanical property, thereby obviously enhancing the bearing capability of the repaired roadbed.

The invention discloses a multi-purpose modified epoxy resin adhesive which comprises a component A and a component B, and the mass ratio of the component A to the component B is 3:1; the component A comprises the following components in parts by weight: 100 parts of bisphenol A-type epoxy resin, 10-15 parts of a toughening agent, 5-10 parts of an active diluent, 2-4 parts of a thixotropic agent and 100-150 parts of a filler; the component B comprises the following components in parts by weight: 30-55 parts of a composite curing agent, 1-3 parts of an accelerator, 1-3 parts of a coupling agent, 1-3 parts of a thixotropic agent and 30-50 parts of an active filler. The multi-purpose modified epoxy resin adhesive disclosed by the invention is excellent in thixotropic property, good in construction performance and free from flowing during construction on sunny sides, resistant to acid and alkali medium erosion, high in normal temperature curing speed, free from volatile matters contained, non-toxic and harmless, high in bonding strength and good in toughness and impact resistance.

The invention discloses a high viscosity rapid room temperature curing sealant comprising the following raw materials by weight: 30-40 parts of chloroprene rubber, 20-30 parts of styrene butadiene rubber, 40-50 parts of terpene resin, 35-45 parts of epoxy resin, 7-12 parts of an antioxidant, 160-180 parts of an organic solvent, 16-19 parts of a thickener, 110-130 parts of light calcium carbonate, 10-13 parts of ethylene glycol, 2.5-3.5 parts of a curing accelerator and 7-11 parts of a defoaming agent. The high viscosity rapid room temperature curing sealant is high in viscosity, short in curing time at room temperature, easy to use, and wide in range of uses.

The invention belongs to the field of porous materials and discloses a high-pressure-resistant water-permeable porous material and a preparation method thereof. The porous material comprises following five components: a vinyl monomer, an oxidation-reduction initiator, a surfactant, water, and a powder filling material subjected to surface treatment with silane, or comprises the five components and aggregate. The porous material is prepared by injecting a slurry mixture formed by the five components or a uniform mixture of the slurry mixture and a large-diameter organic filling material into a mould, or injecting the slurry mixture or the mixture of the slurry mixture and the large-diameter organic filling material into a mould of a macroporous three-dimensional mesh material, curing and moulding. The cured and moulded porous material has excellent gas permeability, water permeability and high-pressure resistance. The compressive strength of the porous material is higher than 33 MPa. The bending strength of the porous material is higher than 14 MPa, and the porosity (open pores) is higher than 20%. The porous material can be repeatedly used for a plurality of times. The porous material can be used for manufacturing ceramic high-pressure slip casting moulds and used in the field of building materials and the field of water filtration and purification, and the like.

The invention discloses an anti-seepage self-healing underground pre-buried cable sheath, and belongs to the technical field of cables. The anti-seepage self-healing underground pre-buried cable sheath is characterized in that an inner sheath and an outer sheath which are arranged in in-out sleeving are arranged, and a plurality of repairing embedding bodies are embedded in the inner sheath, and when cracks are generated on the outer end wall of the outer sheath, external water vapor permeates into the outer sheath, the water-soluble heat release bags on the repairing embedded bodies are dissolved in water to expose the reductive iron powder in the water-soluble heat release bags, and the reductive iron powder reacts in air to generate heat, the heat is conducted to a thermal expansion filling layer, and the thermal expansion filling layer is heated to expand to extrude the elastic discharging bags embedded in the thermal expansion filling layer. Therefore, the repair material in the elastic discharge bags is led out, the led-out repair material is used for filling and repairing the cracks of the outer sheath through a hydrolysis heat storage layer, the self-repairing of the damaged parts is completed, the self-healing capability of the outer sheath is realized, the problem of leakage of the cable sheath for a long time is effectively avoided, and the long-acting safe use of the cable is facilitated.

The invention relates to an ultralow-hardness polyurethane pouring sealant and a preparation method and application thereof. The polyurethane pouring sealant is composed of a component A and a component B, wherein the component A is prepared from, by weight, 90-100 parts of Polypolyol, 0.1-1 part of compound type anti-yellowing agent, 0.1-2 parts of catalyst, 0.1-1 part of defoaming agent, 0.1-5 parts of coupling agent and 0-10 parts of plasticizer, the component B is prepared from, by weight, 30-40 parts of polyisocyanate and 60-70 parts of plasticizer. The pouring sealant can be suitable for automatic pouring of handwork, is short in curing time at room temperature, and has the advantages of being transparent, few in bubble, high in insulativity, high in adhesion to metal and the like after being cured.

The invention discloses a methacrylate polymer-inorganic compound through hole material as well as a preparation method and an application thereof. The preparation method comprises the following steps: pouring 70-50 wt% of inorganic fillers-coated methacrylate polymer-aqueous suspension liquor into 30-50 wt% of methacrylate polymer-vinyl monomer-reactive emulsifier-initiation system premixed liquor at 10-30 DEG C, stirring for 0.5-3 minutes to obtain uniformly mixed pouring liquor, finishing pouring of the pouring liquor within 3 minutes, and curing in an environment with the room temperature of 10-30 DEG C for 1-6 hours to obtain the methacrylate polymer-inorganic compound through hole material. The methacrylate polymer-inorganic compound through hole material has the characteristics of low cost, good pouring flowability, quick curing and forming at the room temperature, opening structure, uniformly distributed tiny pores, excellent air and water permeability, relatively high strength, environmental protection and energy conservation, thereby having a wide application prospect.

The invention provides a double-component room-temperature curing adhesive and a preparation method thereof. The double-component room-temperature curing adhesive is prepared from a component A and acomponent B, wherein the component A is prepared from the following raw materials in parts by weight: 40 to 50 parts of novolac vinyl ester resin and 30 to 40 parts of bisphenol A type epoxy vinyl resin; the component B comprises a peroxide initiator; the weight ratio of the component A to the component B meets the following conditions: after the component A and the component B are mixed, the peroxide initiator accounts for 0.5 to 3.5 percent of the total weight of the mixture of component A and component B. According to the double-component room-temperature curing adhesive, the novolac vinylester resin and the bisphenol A type epoxy vinyl resin are selected as main body resin of the component A, and the peroxide initiator is selected as an effective component of the component B, so thatthe room-temperature curing speed of the adhesive is extremely increased and the adhesive shows more excellent stability when being used for bonding electronic products.

The invention relates to a method for synthesizing a low-viscosity epoxy resin curing agent, which comprises the steps of: using adipic acid and polyamine as raw materials; weighing the adipic acid and the polyamine according to a mol ratio of 1 to (1.2-4); adding all the polyamine into a stirring reactor for one time, while adding the same mass of adipic acid into the stirring reactor in batch at intervals of 5-30 min, reacting under the condition of 155-180 DEG C for 1-2.5 h; preserving heat and obtaining a polyamide resin which is served as the low-viscosity epoxy resin curing agent. The method disclosed by the invention does not need saponification and acidification, and is more energy-saving and more environment-friendly; the polyamide curing agent prepared by the method is free from generation of pungent smell, rapid in curing at a room temperature, wide in application range when being used together with epoxy resin, low in viscosity, and also, when being used together with the low-viscosity epoxy resin, is convenient in operation even under the condition of low temperature; in addition, the polyamide curing agent is convenient in construction during use, excellent in quality, and suitable for large scale production.

The invention provides AB glue based on methyl methacrylate. The AB glue is prepared from the following components in parts by mass: 100 to 160 parts of methyl methacrylate, 0.1 to 0.6 part of stabilizer, 0.1 to 0.9 part of pigment, 50 to 65 parts of hydroxyethyl methylacrylate, 10 to 18 parts of reinforcing monomer and 30 to 40 parts of nitrile rubber buna. After the scheme is adopted, the bonding strength is improved, the room-temperature curing speed is accelerated, and the comprehensive performance is excellent.

The invention relates to the field of auxiliary materials for photoelectric element processing, in particular to pellet glue and a preparation method thereof. The pellet glue is prepared from a first component and a second component. The weight ratio of the first component to the second component is 2.5-3.5:1. The first component comprises epoxy resin, elastomers, heating expandable microspheres, citrate, filler and a thixotropic agent. The second component comprises a ketimine oxygen curing agent, a fatty amine oxygen curing agent, an arylamine oxygen curing agent, a silane coupling agent, an epoxy curing catalyst, heating expandable microspheres, filler and a thixotropic agent. When the glue is used for bonding diamond pellets and a diamond milling and grinding wheel to form a solid abrasive grinding tool, water resistance is good, bonding force is high, and room temperature curing is quick; temperature is not high in the heating and glue removing process, and residual glue is easy to remove.

The invention provides non-formaldehyde glue for synthesizing automotive interiors by utilizing chemical materials. The non-formaldehyde glue is prepared from polyvinyl acetate, ethoxyethanol acetate, sec-butyl acetate, a water-retaining agent, an edible defoaming agent, a flame retardant, an edible preservative, a thickening agent and water according to a certain proportion. A preparation method for the non-formaldehyde glue comprises the steps of controlling the temperature of a solution reaction system to 30-40 DEG C, and stirring uniformly by using a stirring machine. The non-formaldehyde glue provided by the invention solves the problem of toxic substances such as formaldehyde contained in common glue and has the excellent characteristics of environment friendliness, safety in operation, higher curing speed, low processing cost and the like.