36results about How to "Fast curing at low temperature" patented technology

The invention relates to a bi-component polyurethane pouring sealant and a preparation method thereof. The polyurethane pouring sealant consists of a component A and a component B, wherein the component A is a hydroxyl end group component, and the component B is NCO-terminated polyurethane prepolymer prepared by reacting a hydroxyl compound with isocyanate. In the using process, the component A and the component B are mixed in a certain ratio. The prepared bi-component polyurethane pouring sealant is suitable for encapsulating medium and small electronic elements, such as encapsulation of circuit controllers of home appliances such as igniters and sensors, moistureproof and shockproof sealing of electronic and electric switches and sealed optical instruments of electronic elements, and the like; and the bi-component polyurethane pouring sealant does not contain any solvent, is adjustable in drying speed, can be cured at normal temperature or low temperature and stored stably, and has the advantages of good adhesion, flexibility, water resistance, flame retardancy, electric property and the like.

The invention discloses a cashew phenolic aldehyde amide epoxy hardener for four-season-general type anticorrosive paint and a preparation method of the cashew phenolic aldehyde amide epoxy hardener. The cashew phenolic aldehyde amide epoxy hardener is composed of, by weight, one part of diethylenetriamine, 2.5-3 parts of dimer acids or fat single acids, 2.8-3.2 parts of anacardol, one part of the diethylenetriamine, and 0.9-1.2 parts of 96%-purity paraformaldehyde. Raw material composition, and the best matching and the feeding order of each material are optimized through a large number of experiments, and each component matching is scientific and reasonable. The method of mannich addition after amidation is utilized, the whole process is strong in operability, cost is low, production periods are short, productivity is high, the prepared cashew phenolic aldehyde amide epoxy hardener can be general in four seasons, drying is rapid, operation periods are short, anti-corrosion performance is good, and water-proof performance is excellent. The cashew phenolic aldehyde amide epoxy hardener can be widely used in the fields of pipe and storage tank storage corrosion prevention, adhesion agents, metallic top coats, chip heavy corrosion prevention and the like.

A semiconductor device bonded by an anisotropic conductive film and an anisotropic conductive film composition, the anisotropic conductive film including a reactive monomer having an epoxy equivalent weight of about 120 to about 180 g / eq; a hydrogenated epoxy resin; and a sulfonium cation curing catalyst.

The low-temperature fast-curing hydrogen sulfide-resistant solvent-free coating for pipelines of the present invention is specially developed to prevent hydrogen sulfide corrosion, and includes components A and B, and component A contains novolac epoxy resin, hydrogenated bisphenol A epoxy resin, active Toughening resin I, reactive toughening resin II, reactive diluent, leveling agent, defoamer, dispersant, thixotropic agent, zinc phosphate, ZAPP, aluminum tripolyphosphate, white ceramic powder and barite powder; component B Contains curing agent and curing accelerator; components A and B are used in combination according to the mass ratio A:B=3.5~4.5︰1. The preparation steps of the paint include: ① batching; ② activation; ③ dispersion; ④ grinding; ⑤ filtering and packing. The coating of the present invention does not contain volatile solvents, can be used at 80°C, 20MPa pressure, and an environment containing 4 to 5% hydrogen sulfide, and can be cured rapidly in an environment lower than 5°C, and can be solidly dried within 48 hours. Good, has excellent soil acid corrosion resistance.

The invention belongs to the technical field of road maintenance repairing and relates to an asphalt pavement cold patching material available for quick opening of traffic and a preparation method thereof; the cold patching material comprises component A, component B and component C; the component A comprises, by weight, 100 parts of limestone mineral material, and 3-5 parts of cement; the component B comprises, by weight, 100 parts of emulsified asphalt, and 40-60 parts of self-emulsified waterborne epoxy resin; the component C comprises, by weight, 100 parts of waterborne epoxy curing agent, and 30-50 parts of an accelerant. Compared with the prior art, the asphalt pavement cold patching material and the preparation method thereof have the advantages that early strength of waterborne epoxy-modified emulsified asphalt mixture can be improved to shorten the time to open the traffic; the material has good water solubility, the preparation process is simple, the preparation conditions are mild, construction is convenient and quick, skilled personnel and special equipment are not required, the material has good low-temperature operability and workability, and is free of volatile solvents, friendly to the construction environment, capable of patching a pavement quickly and good for environmental protection.

The invention relates to a low-temperature fast-curing resistance flame-retardant structural adhesive, which is composed of the following raw materials: 10-20 parts of self-synthesized flame-retardant epoxy resin gel, 25-25 parts of tricyclopentyl dimethoxy epoxy resin 35 parts, 3-8 parts of new low-viscosity toughening agent, 20-30 parts of inositol hexa(mercaptopropionate), 4-6 parts of imidazole adduct, 6-33 parts of superfine aluminum hydroxide. The structural adhesive prepared by the invention has the advantages of fast curing speed at low temperature, easy operation of one component, good impedance performance, good flame retardancy, low shrinkage, good bonding strength, etc., and is suitable for various micro-motor inductance coils and related difficult Structural bonding of sticky materials.