64results about How to "Moderate curing speed" patented technology

The invention provides a graphene anticorrosive coating and a preparation method thereof. The graphene anticorrosive coating is prepared from a component A and a component B, wherein in percentage by weight, the component A comprises 20%-30% of epoxy resin, 1%-3% of graphene, 0.5%-2% of a dispersing agent, 15%-25% of talcum powder, 10%-20% of zinc powder and 1%-5% of aluminum paste, and the component B comprises 30%-50% of cashew nut shell oil phenolic amide and 10%-30% of polyamide. The graphene anticorrosive coating provided by the invention is safe and environment-friendly, is moderate in cost, simple and convenient in process, stable in storage, excellent in adhesive force on base materials such as steel, iron and the like, excellent in mechanical performance such as flexibility, wear resistance performance and the like, and prominent in protective effects in chemical media such as an acid, an alkali, a salt and the like, shows excellent protective performance such as high and low temperature resistance, high salinity resistance and the like in a condition of a simulation marine environment experiment, and can be applied as primer for an anticorrosive coating in ocean engineering with various steel and iron materials.

The invention relates to a chemical medical adhesive composition and a preparation method thereof. The composition is composed of cyanoacrylate, plasticizer, tackifier, stabilizer and other aids. The chemical medical adhesive composition can be quickly polymerized under the initiation of negative ions and produce the adhesive capacity, has high adhesive strength, releases low heat during adhering and has good environment-friendly performance, and adhesive membranes can be degraded and completely excreted out of the body. Therefore, the biodegradable medical adhesive can be used for various wound adhesion, large-area wound hemostasis, closure of internal organ and soft tissue wounds, and is convenient to use.

A medical adhesive for adhering skin and hemostasis of viscera is prepared from at least two organic compounds chosen from alpha-ethyl cyanoacrylate, alpha-ethoxyethyl cyanoacrylate, alpha-butyl cyanoacrylate and alpha-octyl cyanoacrylate through proportional mixing.

The invention belongs to the technical field of spraying polyurea elastic materials, and discloses a polyaspartatepolyurea coating witha moderate surface drying time and adaptability to environmentalchanges, which is prepared from a A material and a B material. The mole ratio of NCO in the A material to NH in the B material is 1.05:1.1. The A material is mainly prepared from,by weight,25-44% of polyether polyol, 55-74% of aliphatic polyisocyanate and 1-5% of nanographene oxide; the B material is mainly prepared from, by weight,70-80% of polyaspartate, 10-15% of nano metal oxide filler, 5-10%of pigment and filler, 1-3% of defoaming agent, 1-3% of leveling agent and 2-5% of adhesion promoter. The invention further provides a preparation method and use method and application of the polyaspartatepolyurea coating. The polyaspartatepolyurea coating has the advantages of being easy to brush, moderate in the surface drying time, and capable of adapting to the environmental changes.

The invention provides a two-component solvent-free plant oil-based adhesive, which comprises components A and B, wherein component A comprises modified plant oil, tackifying resin, a coupling agent, a filler, microencapsulated microspheres and a chain extender; component B comprises isocyanate or a mixture of isocyanate and modified plant oil. The two-component solvent-free plant oil-based adhesive with high comprehensive performance is safe in use, economical, moderate in curing speed, adjustable in hardness, high in initial cohesiveness, water resistance and heat resistance, strong in adhesive strength, wide in application range, green and environment-friendly.

The invention discloses a polyurethane compound suitable for grouting. The polyurethane compound comprises the following raw materials by weight: 30-60 parts of polyether, 3-12 parts of methyl silicone oil, 3-15 parts of a plasticizer, 10-25 parts of a flame retardant, 25-50 parts of polypropylene glycol, 1-7 parts of dihydromethyl propionic acid, 2-10 parts of a chain extender, 2-10 parts of a catalyst, 20-35 parts of polyisocyanate, 10-25 parts of polyether polyol, 20-60 parts of isophorone diisocyanate, 10-25 parts of glycerol, 2-15 parts of pentaerythritol, 2-8 parts of a defoaming agent, and 3-7 parts of a diluents. The preparation method provided by the invention is simple, and the prepared grouting composition can be used in a high-pressure environment, and can maintain the high strength characteristic for a long time, thus being suitable for popularization.

The invention discloses a silane modified polyether two-component sealing glue, which comprises a component A and a component B according to a weight ratio of 10-16:1, wherein the component A comprises the following raw materials by weight: 10-80 parts of a silane modified polymer, 0-40 parts of a plasticizer, 0-80 parts of a reinforcing filler, 0-20 parts of an additive A and 0-2 parts of a waterremoval agent, and the component B comprises the following raw materials by weight: 0-30 parts of toner, 0-70 parts of a plasticizer, 0-30 parts of an additive B, 0-10 parts of a catalyst and 0-20 parts of a coupling agent. The invention further discloses a preparation method of the silane modified polyether two-component sealing glue. According to the invention, the mechanical property of the product can be effectively improved; the stability of the system can be improved, the extrusion performance of the product is improved, and the deep curing speed after the two component mixing can be increased.

The invention belongs to the field of polyurethane adhesives, and relates to a solvent-free non-yellowing type polyurethane adhesive for a sport field and a preparation method thereof. The solvent-free non-yellowing type polyurethane adhesive is prepared from isocyanate, polyolefine polyalcohol, castor oil, an antioxidant, a light stabilizer and a catalyst in a mass ratio of (25-35):(30-40):(20-30):(1-4):(1-4):(1-2). The invention relates to the solvent-free non-yellowing type polyurethane adhesive for the sport field and the preparation method thereof. The solvent-free non-yellowing type polyurethane adhesive disclosed by the invention has the characteristics of odorlessness, no yellowing, environmental friendliness, moderation in curing speed, no deformation, good storage stability and excellent mechanical property.

The invention relates to epoxy elastic putty for the surface of concrete. The epoxy elastic putty is composed of a componend a component B; the component A is prepared from the following ingredients in percentage by weight: 5-20% of liquid epoxy resin, 5-20% of flexible epoxy resin, 3-10% of anatase titanium dioxide, 10-30% of talcum powder, 30-60% of heavy calcium carbonate, and 5-15% of a mixed thinner; the component B is prepared from the following ingredients in percentage by weight: 10-20% of polyamide resin, 10-25% of polyether modified amine, 40-60% of heavy calcium carbonate, 15-35% of talcum powder, 5-15% of a mixed thinner and 0.5-2% of an anti-sagging agent, and the mass ratio of the component A and the component B is 10 to (3-4). According to the epoxy elastic putty, the advantages of epoxy putty and pure acrylic emulsion elastic putty are combined, the epoxy elastic putty has excellent adhesive force with a concrete base material, has good reelability and toughness, and has the good anti-crack property in a high-low temperature environment.

The invention provides a two-component high-hardness polyurethane pouring sealant suitable for fixing a water treatment curtain type membrane assembly, wherein the pouring sealant is prepared by mixing a component A of hydroxyl compound-modified isocyanate and a component B composed of a polymerized MDI modified hydroxyl compound according to the weight ratio of (50-90):100. The polyurethane pouring sealant has the advantages of high curing hardness, proper mixing viscosity, convenient construction, moderate curing speed, low heat release peak value, no bubbling, good bonding effect, environmental protection, no pollution, and excellent acid and alkali resistance and weather resistance. The process is simple, the condition is easy to control, and automatic production is easy to realize. The polyurethane pouring sealant is fully satisfied with technical requirements of the water treatment curtain type membrane assembly on the application process and product performance of the pouring sealant.

The invention discloses a wear-resisting and high-rigidity polycarbonate lens. The wear-resisting and high-rigidity polycarbonate lens comprises a polycarbonate substrate and a coating which covers the surface of the polycarbonate substrate, wherein the coating is prepared from the following raw materials: a silicon resin pre-polymer, polyurethane, epoxy resin, hydroxyethyl methylacrylate, polyester polyol, aluminum acetylacetonate, dibutyltin dilaurate, tetrabutylammonium hydroxide, methylhexahydrophthalic anhydride, 2-methylimidazole, bicyclic amidine, a solvent, a silane coupling agent andan auxiliary agent. The wear-resisting and high-rigidity polycarbonate lens provided by the invention has good wear resistance, high surface rigidity, excellent heat-resisting performance and long service life.

The invention discloses a material of a ring-pull can body. The material comprises an aluminum alloy board and a protection coating coated on the surface of the aluminum alloy board. The aluminum alloy board is made of the material prepared from chemical components including, by weight, 1.0-1.5% of Mg, 0.8-1.2% of Mn, 0.20-0.30% of Cu, 0.25-0.60% of Fe, 0.20-0.40% of Si, 0.01-0.03% of Ni, 0.03-0.05% of Zn, 0.01-0.03% of Re, and the balance Al and inevitable impurities. The aluminum alloy board is obtained by conducting homogenization, hot rough rolling and hot finish rolling on an aluminum alloy cast ingot. The protection coating is formed by smearing epoxy resin paint onto the surface of the aluminum alloy board uniformly. The thickness of the coating is 3-5 micrometers.