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3256results about How to "Improve surface properties" patented technology

Barrier material comprising a thermoplastic and a compatible cyclodextrin derivative

A barrier film composition can comprise a thermoplastic web comprising a thermoplastic polymer and a dispersed cyclodextrin composition having substituents that compatibilize the cyclodextrin in the film. The thermoplastic / cyclodextrin film obtains substantial barrier properties from the interaction between the substituted cyclodextrin in the film material with a permeant. The substituents on the cyclodextrin molecule causes the cyclodextrin to be dispersible and stable in the film material resulting in an extrudable thermoplastic. Such materials can be used as a single layer film material, a multilayer film material which can be coated or uncoated and can be used in structural materials wherein the thermoplastic is of substantial thickness resulting in structural stiffness. The cooperation between the cyclodextrin and the thermoplastic polymer provides barrier properties to a web wherein a permeant can be complexed or entrapped by the cyclodextrin compound and held within the film preventing the permeant from passing through the film into the interior of a film, an enclosure or container. The permeant can comprise a variety of well known materials such as moisture, aliphatic or aromatic hydrocarbons, monomer materials, off flavors, toxic compounds etc.
Owner:CELLRESIN TECH

Highly wearable vacuum coating ultraviolet curing coatings

ActiveCN101157808AImprove adhesionImproved RCA wear performancePolyurea/polyurethane coatingsWear resistantLacquer
The invention relates to the electronic application-coating field, in particular to uv-curing coating with high wearing resistance and vacuum coating. The compositions and contents of the invention are: 10 wt percent to 30 wt percent of difunctional group polyurethane acrylate, 10 wt percent to 40 wt percent of high functional group polyurethane acrylate, 5 wt percent to 20 wt percent of high functional group acrylate monomer, 0 wt percent to 15 wt percent of monofunctional group acrylate monomer, 1 wt percent to 10 wt percent of acid adhesive promoter, 1 wt percent to 6 wt percent of photoinitiator, 0 wt percent to 5 wt percent of nano wearing resistance materials, 0.1 wt percent to 2 wt percent of additive and 10 wt percent to 50 wt percent of solvent. The invention is designed for providing surface protection for vacuum coating parts of electric products such as mobile phone, MP3, and digital camera, etc., and is characterized by good surface effect, good performances of ultrawear-resistance, high temperature and humidity resistance, anti-cold thermal cycling and anti-yellowing, etc., wherein, RCA wear can be up to more than 1500 times, which can effectively improve the service life of electric products. The invention effectively enhances the adhesion and wearing resistant performance of the uv-curing and vacuum coating dope, solves the matching problem of the bottom and surface lacquer of the uv-curing and vacuum coating dope, and has broad university.
Owner:HUNAN SOKAN NEW MATERIAL

Water-based ultra-thin fire-retardant coating for steel structures and preparation method of fire-retardant coating

The invention discloses a water-based ultra-thin fire-retardant coating for steel structures. The fire-retardant coating comprises components as follows: a binder emulsion, an intumescent flame retardant system, filler, deionized water and additives, wherein the additives comprise a dispersing agent, an antifoaming agent, a mold inhibitor, an anti-flash-rust agent, a coalescing agent, a leveling agent and a thickener; the intumescent flame retardant system comprises a dehydration catalyst, a carbonizing agent and a foaming agent. The invention further designs a preparation method of the water-based ultra-thin fire-retardant coating for the steel structures. The components are mixed sequentially to be prepared into the water-based ultra-thin fire-retardant coating for the steel structures in a vertical sand mill and a dispersing tank. The prepared coating is large in adhesive force, high in hardness, good in fireproof property, good in anti-scratch performance and excellent in weather resistance and water resistance, the surface layer of the coating is fine and smooth, the decoration performance is improved significantly, and the preparation method is low in energy consumption and has the advantages that the harm to human bodies and the pollution to the environment during preparation are small and the like.
Owner:JIANGSU MARINE VICTORY COATING

Manufacturing technique of wash-resistant and flame-retardant blended fabric

The invention provides a manufacturing technique of a wash-resistant and flame-retardant blended fabric. The technique comprises the following steps of: 1) preparing a cotton fiber flame-retardant coating adhesive; 2) coating the coating adhesive obtained in the step 1) on the cotton fiber and carrying out heat setting to the cotton fiber so as to obtain a flame-retardant cotton fiber; 3) preparing a glass fiber flame-retardant coating adhesive; 4) directly coating the coating adhesive obtained in the step 3) on the glass fiber and carrying heat setting on the coating adhesive so as to obtaina flame-retardant glass fiber; and 5) blending one of the flame-retardant cotton fiber obtained in the step 2) and a carbon fiber or the flame-retardant glass fiber obtained in the step 4) and one ofa flame-retardant polyester fiber or a flame-retardant nylon fiber so as to obtain the product of the invention. The manufacturing technique of the wash-resistant and flame-retardant blended fabric, provided by the invention, has the advantages of simple process, low cost, good product permeability, softness as well as good wash resistance and flame retardation. The manufacturing technique of thewash-resistant and flame-retardant blended fabric, provided by the invention, is mainly used for manufacturing products like smoke screens, fire-proof insulated curtains, bedspreads, flame-retardant furniture and the like.
Owner:应急管理部四川消防研究所

Pre-irradiation polypropylene graft copolymer and preparation method thereof

InactiveCN102108112AAvoid chain scissionReduce lossesPolymer sciencePolypropylene
The application relates to a pre-irradiation polypropylene graft copolymer and a preparation method thereof. At present, the exploration of methods for improving surface property remains a research hotspot in the field of modification of polypropylene always. The method comprises the following steps: performing pre-irradiation on polypropylene resin after having constant weight at the temperature of 60 DEG C by using a 60 Co radiation source or a DD-1.2 / 1.0-800 type high-frequency high-pressure electron accelerator in air, keeping the dosage rate at 300Gy / min, keeping the dose at 3-50kGy, adding the pre-radiated polypropylene resin into solution containing N, N'-methylenebis acrylamide, auxiliary monomers and additives, keeping the using amount of the N, N'-methylenebis acrylamide to be 0.5-5% by weight of the weight of polypropylene, performing nitrogen filling and oxygen removal on mixed solution for 30 minutes, then heating to 50-75 DEG C for performing reaction for 6 hours under magnetic stirring, nitrogen production and reflux conditions, washing the polypropylene resin which is filtered out with ethanol-water twice, further extracting with ethanol-water solution for 24 hours, drying at the temperature of 60 DEG C and enabling the weight to be constant. The method is used for preparing the polypropylene graft copolymer.
Owner:TECHN PHYSICS INST HEILONGJIANG ACADOF SCI

Scraping-resistant polypropylene combination with good appearance and manufacturing method and application thereof

The invention discloses a scraping-resistant polypropylene combination with good appearance. The combination comprises the components, by weight, of polypropylene of 57-82 parts, polyethylene of 3-8 parts, flexibilizer of 3-8 parts, mineral filler of 10-30 parts, scraping-resistant agents of 1.5-2.5 parts, and other assistant agents of 0.5-1 part. The invention further discloses a manufacturing method and application of the scraping-resistant polypropylene combination with the good appearance. According to the combination, by adding the polyethylene and the processing agents, phase interface problems of the combination are well improved, current ripple and tiger stripe problems existing in an injection process of the combination are well improved, so that great surface effect of an combination injection molding piece is achieved, and the scraping-resistant agents are added so that surface damage generated by scraping and friction during a using process of the combination injection molding piece is relieved. The requirements on the surface performance of the combination during the injection molding process and the later-stage using process and mechanical performance are considered in an overall mode, the requirements on inner ornaments and outer ornaments of an automobile are met, and good application prospect is achieved.
Owner:HEFEI GENIUS NEW MATERIALS
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