47 results about "Epoxy polyamide" patented technology

The invention provides a metal surface anti-corrosion layer structure and a coating method thereof. The anti-corrosion layer structure comprises a priming paint layer of 40-80 mu m, an intermediate paint layer of 50-100 mu m and a surface paint layer of 40-80 mu m, wherein, the priming paint layer is formed by coating object system paint on epoxy-polyamide, the intermediate paint layer is formed by coating object system paint on heavy-sizing epoxy-polyamide, and the surface paint layer formed by coating acrylic acid polyurethane system paint. The coating method comprises coating the priming paint layer on the metal surface; coating the intermediate paint layer on the priming paint layer; and coating the surface paint layer on the intermediate paint layer. The metal surface anti-corrosion layer structure in the embodiment of the invention has good anti-corrosion performance, ageing resistance and mechanical performance, simple technique, low cost which is lower than that of commonly used powdery paints at present, and no heavy metals, which is environment-friendly.

The invention provides a novel high-temperature resistance insulation coating. The coating comprises following components in parts by weight: 30 to 40 parts of poly alkyl aryl organic silicon resin, 40 to 60 parts of stuffing material, 1 to 28 parts of curing agent, 0.01 to 0.1 part of anti-settling agent, 0.01 to 0.7 part of antifoaming agent, and 0.01 to 0.3 part of levelling agent. The poly alkyl aryl organic silicon resin is poly methyl phenyl organic silicon resin or poly ethyl phenyl organic silicon resin; the stuffing material is composed of one component or a plurality of components selected from following components: silicon oxide, zinc oxide, alumina, and mica; and the curing agent is an epoxy polyamide curing agent. The novel high-temperature resistance insulation coating has the advantages of high thermal resistance, capability of being used at the temperature of 600 DEG C while still having good mechanic performance and stability, good insulation performance, and long service life. Furthermore, the preparation method of the coating is simple, and meets the requirement of saving cost.

A prepn. method for protective film of lithium ion cell. At least one organic polymer among phenolic resin, epoxy resin, polyvinyl acetate, polyurethane, polytetrafluoroethylene, chloronorgutta, phenolic chloronorgutta, epoxy polyamide and phenolic polyvinyl acetal is added into particular solvent selected at least one from diionized water, carbinol, benzene, toluene, chloroform dichloroethylene, diethyl ether, acetone, ethyl acetate and normal ethane, they are mixed and stirred to organic solution which is coated on case of lithium ion cell, then the case is static placed to volatilize particular solvent in the organic solution in room temp. to form a layer of uniform and densify protective film on cell case. Said film can prevent corrding of electrolyte and perspiration in prodn process. The invent is also relates to a solvent used for cleaning said proctive film selected from deionized water, alcohol, acetone, oxolane and formyldimethylamine.

The invention discloses an epoxy polyamide resin wet strength agent and a preparation method thereof. The preparation method comprises the following steps of: (1) reacting an aliphatic polyamine with an aromatic polyamine to obtain a condensation product of the aliphatic polyamine and the aromatic polyamine; (2) adding water in the condensation product obtained in the step (1), and adjusting the weight solid content of the condensation product to be 17%-35%; and then adding epoxy chloropropane for reaction to obtain the epoxy polyamide resin wet strength agent. The epoxy polyamide resin wet strength agent has higher wet strength effect in comparison with the traditional wet strength agent, and can evidently increase dry strength effect, and can enable paper to have high degree of sizing and good water resistance; and due to the action of an aromatic group, the epoxy polyamide resin wet strength agent has high stability and can be stored for half a year at normal temperature without influencing the use effect.

A coating, a coated turbine component, and a coating process are disclosed. The coating includes an epoxy-polyamide structure formed from a coating composition comprising a phenolic resin and a curing agent, the phenolic resin comprising a bisphenol F constituent and an epichlorohydrin constituent. The coating composition is solvent-free or substantially solvent-free. The cured coating is cross-linked from curing below 120° C., from curing using infrared-microwave radiation, or a combination thereof. The coated turbine component includes a surface and the coating. The coating process includes applying the coating and curing the coating.

An epoxy polyamide adhesive and its preparation method belong to the field of adhesives. The epoxy polyamide adhesive is an adhesive prepared by using epoxy resin and polyamide as main materials, has good caking property with materials such as a steel plate, a rubber plate and the like, and can be applied in bonding between a steel plate and a steel plate as well as between a steel plate and a rubber plate. By interaction between an inorganic filling material and organic main materials, adhesive force, strength and toughness of the adhesive are enhanced. The epoxy adhesive prepared by using polyamide as a curing agent has advantages of high peel strength and high strength. By using melamine and polyamide as a composite curing agent, the defect that curing time is long when polyamide is separately used as a curing agent is solved. The epoxy polyamide adhesive has low curing temperature, can be cured at room temperature, and has advantages of simple technology and convenient operation.

The invention discloses a preparation method of an epoxy polyamide type paper making wet strength agent. A conventional preparation process has the problems of high energy consumption, low product quality controllability and the like. The preparation method disclosed by the invention comprises the following steps: (1) mixing polyamine with dicarboxylic ester to have high-temperature condensation polymerization; (2) adding water and epoxy chloropropane into the above-mentioned product, and performing a multi-temperature staged reaction to obtain the epoxy polyamide type paper making wet strength agent. Compared with similar products, the epoxy polyamide type paper making wet strength agent prepared by the method disclosed by the invention has a good wet strength effect, and also has relatively-great improvement in paper dry tensile strength, breaking strength and tearing strength. The preparation method disclosed by the invention needs no addition of a catalyst and has the advantages of simple operation, low energy consumption and the like.

The invention discloses an epoxy polyamide resin wet strength agent and a preparation method thereof. The preparation method comprises the following steps: (1) the pressure reaction of aliphatic polyamine and aromatic polyprotic acid is carried out; and (2) the water is added in a condensation compound in step (1), the epichlorohydrin is then added for normal pressure reaction, and the epoxy polyamide resin wet strength agent is obtained. The epoxy polyamide resin wet strength agent prepared by adopting the above method has the viscosity of 50-250 centipoises under 25 DEG C, the solid content of 10-30% by weight percent and the molecular weight range of 170, 000-180, 000. Compared with the conventional wet strength agent, the epoxy polyamide resin wet strength agent has higher wet strength effect as well as obvious dry-strengthening function, and also leads the paper to have better sizing degree and water resistance. The product has higher stability owing to the function of the aromatic group and can be stored for more than half a year under the normal temperature without influencing the using effect.

The invention discloses gas cabinet anti-corrosion paint and a preparation method thereof. The gas cabinet anti-corrosion paint is prepared from a component A and a component B at the mass ratio of 10 to 1, wherein the component A is composed of an organic silicon modified phenolic aldehyde epoxy resin and epoxy polyurethane mixture, a solvent, an anti-settling agent, a dispersant, a foaming agent, a leveling agent, rutile titanium white, a coloring pigment, a sheet-shaped extender pigment, an anti-rusting agent and an incremental agent; the component B is composed of an epoxy-polyamide curing agent and a solvent; and the mass ratio of organic silicon modified phenolic aldehyde epoxy resin to epoxy polyurethane is 1 to (0.8-1.5). By adopting the gas cabinet anti-corrosion paint, the adhesive force and the high-temperature-resisting and acid-alkali-resisting performances of a coating are improved; meanwhile, the water-resisting performance and the salt mist corrosion resisting performance of a coating system are improved and a coating color protection capability is also greatly enhanced; and the long-acting anti-corrosion effect is relatively remarkably improved.

An ultraviolet resistant near space airship comprises an airship skin, the skin sequentially comprises a weatherproof layer, a primer layer, a load carrying layer, a cohesive layer, a helium barrier layer and a heat sealing layer, the heat sealing layer is a polyurethane film, the helium barrier layer selects an aluminized polyester (Al-PET) film, the cohesive layer is polycarbonate, the load carrying layer selects a PBO plain fabric, the primer layer is two-component epoxy polyamide, and the weatherproof layer is a nanometer fluorocarbon coating. The adoption of the nanometer fluorocarbon coating in the invention enhances the automatic cleaning effect, the ultraviolet resistance and the environmental protection capability of the weatherproof layer, and substantially enhances the weatherproof property of the airship skin. The invention also relates to a making method of the airship skin.

The invention relates to the technical field of rubber seal processing, and discloses an antistatic rubber seal material, the antistatic agent used and polydimethylsiloxane, epoxidized polyamide resin, polyvinyl alcohol, polyethyleneimine Curing at the same time, compared with the antistatic agent directly coated on the surface of the product, the method of the present invention combines the antistatic component with the material, and under the directional action of the antistatic agent, lipophilic groups will be formed on the surface of the polymer. The dense monolayer of antistatic agent with the hydrophilic group facing outward can reduce the overall resistance and prevent charge accumulation, achieve structural antistatic effect, and have excellent durability.

The present invention provides a method for marine antifouling. The method comprises: coating an object requiring antifouling with an epoxy polyamide anticorrosion coating material; coating an adhesion layer on the anticorrosion coating material layer; and coating a low surface energy antifouling coating material topcoat on the adhesion layer. According to the present invention, the method uses the a low surface energy marine antifouling coating material and uses the three-component organic combination coating matching system, wherein the epoxy polyamide anticorrosion coating material is adopted as the primer, the middle coating is the styrene-butyl acrylate-polysiloxane interpenetrating network adhesion layer, and the upper layer is the low surface energy nanometer inorganic silicon antifouling coating material topcoat; and the excellent adhesion of the epoxy resin to the substrate and the excellent connection effect of the middle coating between the primer and the topcoat are used, and the problems of the adhesion among the steel iron substrate, the anticorrosion primer and the antifouling coating material, the antifouling function and the environmental protection are well solved.

The invention relates to a sealing rubber ring for a brake shoe automatic riveting device. The sealing rubber ring is prepared from the following components in parts by weight: 15 to 20 parts of epoxy resin, 5 to 10 parts of dry oil alkyd resin, 6 to 12 parts of phenolic resin, 1 to 3 parts of polybenzimidazole, 20 to 30 parts of graphite powder, 4 to 8 parts of epoxy-polyamide, 6 to 18 parts of manganese dioxide, 20 to 40 parts of butadiene rubber, 3 to 5 parts of zinc stearate and 2 to 8 parts of silicon nitride. Being prepared from the epoxy resin, the dry oil alkyd resin, the phenolic resin, the polybenzimidazole, the graphite powder, the epoxy-polyamide, the manganese dioxide, the butadiene rubber, the zinc stearate and the silicon nitride according to the provided formula proportion, the sealing rubber ring for the brake shoe automatic riveting device not only has good wear resistance, but also is remarkable in anti-aging efficiency, can be used at high temperature for a long time, and has greatly prolonged service life.

The invention relates to the technical field of wooden product processing and manufacturing and discloses a method for improving flame retardance of fraxinus mandshurica wood. A used flame retardant is prepared from the following components of, by mass, 12.5-13.0% of tricresyl phosphate, 11.0-12.0% of tetrachlorophthalic anhydride, 7.5-8.0% of tripolycyanamide- formaldehyde resin, 7.0-7.5% of epoxy polyamide resin, 6.2-6.5% of ethidene diamine, 5.0-5.5% of dialkyl p-phenylenediamine, 4.5-5.0% of pentaerythritol, 2.8-3.0% of 2,6 ditert-butyl-4-cresol, 2.5-3.0% of bioctadecyl methylamino quaternary ammonium salt and the balance water. The flame retardant is applicable to the wood characteristic of fraxinus mandshurica, and meanwhile, a vacuum pressure treatment technology and microwave treatment are applied to wood flame retardance treatment, and the flame retardance effect is enhanced.

A weather-proof near space airship comprises an airship skin. The skin comprises a weather-proof layer, a primer layer, a force-bearing layer, an adhesive layer, a helium resistant layer and a heat sealing layer sequentially from outside to inside. The heat sealing layer is a polyurethane film, the helium resistant layer is an aluminized polyester (Al-PET) film, the adhesive layer is made of polycarbonate, the force-bearing layer is made of PBO plain weave fabric, the primer layer is made of two-component epoxy polyamide, and the weather-proof layer is a nano-fluorocarbon coating. According to the weather-proof near space airship, the nano-fluorocarbon coating is adopted, capabilities of self-cleaning, ultraviolet proofing and environment protecting of the weather-proof layer are enhanced, and the weather proofing capability of the airship skin is improved greatly. The invention further relates to a production method of the airship skin.

The invention discloses an environment-friendly decorative wall paper. A base paper is mainly made of wood pulp, straw pulp and epoxy polyamide resin wet strength agent in percentage by weight: 85 to 95 percent of the wood pulp, 4 to 14 percent of the straw pulp and 0.5 to 1 percent of the epoxy polyamide resin wet strength agent; and the base paper is sequentially coated with a fire retardant coating layer and a resin adhesive layer from inside to outside. In the invention, the wall paper made of synthetic fibre in the prior art is abandoned. The base paper is made of the wood pulp, the straw pulp and the epoxy polyamide resin wet strength agent in proper proportion, so that delicate patterns can be printed on the base paper; and the base paper is coated with the resin adhesive layer to ensure that the base paper can be firmly combined with the wall while having good permeability.