34results about How to "Does not affect storage stability" patented technology

The invention discloses environmentally-friendly water/oil-repellent fluorinated acrylate emulsion and a preparation method thereof. The fluorinated acrylate emulsion is mainly prepared from 3-chloro-2-hydroxy propyl methyl acrylate, a fluorine-containing alkyl acrylate monomer, an acrylate monomer, a crosslinking monomer, a non-ionic emulsifier, a cationic emulsifier, a modifier, an initiator and deionized water. The fluorinated acrylate emulsion prepared by using the method can be applied to a textile finishing agent; and the textile finished by the emulsion has excellent water and oil repellency and anti-pollution characteristic.

The invention belongs to the field of the silicone sealants and specifically relates to a mold-proof silicone sealant and a preparation method thereof. The mold-proof silicone sealant and the preparation method thereof are used for solving the technical problems of an existing mold-proof silicone sealant product such as yellowing after solidification, relatively poor compatibility of a mold-proof agent and a basis adhesive material and degradation of the storage stability of the adhesive material after the mold-proof agent is added. The mold-proof silicone sealant is prepared from such components in parts by weight as 100 parts of hydroxyl-terminated polydimethylsiloxane, 0-80 parts of plasticizer, 5-35 parts of fumed silica, 1-10 parts of cross-linking agent, 0.05-1.8 parts of mold-proof agent, 0.5-5 parts of silane coupling agent and 0.1-5 parts of catalyst. The invention also provides the preparation method of the mold-proof silicone sealant. The mold-proof agent and the adhesive material of the mold-proof silicone sealant are good in compatibility with each other and have no influence on the mechanical performance index of the mold-proof silicone sealant and the storage stability of the adhesive material, and therefore, the mold-proof silicone sealant can be applied to different occasions.

The invention discloses a method for preparing high-adhesive force solid acrylic resin modified by organosilane. The method disclosed by the invention can be used for preparing the high-adhesive force solid acrylic resin by introducing an organosilane monomer into acrylic resin through a chemically bonding mode; the prepared modified solid acrylic resin as an additive is added to a powder coating system, can outstandingly enhance the adhesive force of a powder coating layer on a substrate and specific substrates, such as a galvanized plate and stainless steel, especially, cannot influence the storage stability of the powder coating due to excellent self characteristics of the solid acrylic resin and achieves certain improvement on the solvent resistance and boiling resistance of the powder coating layer.

The invention relates to a preparation method of heat curing fluorosilicone raw rubber. The preparation method comprises the following steps: adding D3F and D4Vi into a reactor and then dehydrating D3F and D4Vi, adding prepared potassium silanolate catalyst pre-polymer, heating, introducing nitrogen and stirring to carry out polymerization, wherein the temperature is 60-115 DEG C and the reaction time is 20-100min, neutralizing with a neutralizer until the reactant is neutral, and finally, removing small molecular substances from the material, reducing temperature and discharging. Due to the adoption of the potassium silanol catalyst pre-polymer with high activity, the reaction temperature is low, the accelerant is not required, an end-capping reagent is not required in the polymerization process, and the nitrogen purging manner is adopted in the stage of removing the small molecular substances from the material, the volatile matter of the heat curing fluorosilicone raw rubber is reduced; the prepared heat curing fluorosilicone raw rubber can be widely used in the fields of aerospace, petrochemical industry, automobiles, artificial organ, and the like, and has a good promotional value.

The invention relates to an acrylic acid structural adhesive with good weatherability and stability and a preparation method thereof, the acrylic acid structural adhesive comprises a component A and a component B, the component A is composed of an acrylic acid ester monomer, an elastomer, a promoter, a coupling agent, a stabilizing agent and an auxiliary agent, and the component B is composed of an oxidizing agent, a plasticizer, epoxy resin and an auxiliary agent. The prepared acrylic acid structural adhesive has the characteristics of good weatherability, high stability, good manufacturability and high strength.

The present invention discloses a lubricating type threaded locking sealing anaerobic adhesive and a preparation method thereof, and relates to the field of threaded locking sealing anaerobic adhesives, wherein the anaerobic adhesive comprises 20-90% of an acrylic ester self-lubricating type monomer with boron contained on the molecular chain, 0-76% of a boron-free acrylic ester monomer, 0.02-1% of a polymerization inhibitor, 0.1-5% of an accelerator, 0.3-5% of an auxiliary accelerator, 0.01-0.1% of a metal ion chelating agent, 0.1-5% of an organic peroxide initiator, 0-10% of fumed silica, and 0-30% of a plasticizer. According to the present invention, the acrylic ester self-lubricating type monomer with the boron contained on the molecular chain is added during the preparation process, such that the lubricating property of the threaded locking sealing anaerobic adhesive can be improved, the friction coefficient and the torque coefficient during the fastener tightening can be reduced, and the torque strength of the cured threaded locking sealing anaerobic adhesive, the storage stability of the adhesive liquid, and the late coloring on the adhesive can not be affected.

The invention belongs to the technical field of defoaming agents, and particularly relates to a delayed coking high-temperature-resistant defoaming agent which is characterized by comprising the following components in percentage by mass: 6-10% of modified epoxy polyhedral oligomeric silsesquioxane, 4-6% of an acrylamide-methyl methacrylate copolymer, 4-8% of fatty acid ester and the balance of a solvent. The invention also provides a preparation method of the delayed coking high-temperature-resistant defoaming agent. The invention discloses a delayed coking high-temperature-resistant defoaming agent which still has good defoaming and foam-inhibiting performance under a high-temperature condition, can achieve a good defoaming and foam-inhibiting effect only by adding a small amount of defoaming agent, does not contain polyether chains, and is low in silicon content and good in storage stability.