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594results about How to "Good solvent resistance" patented technology

Low-haze transparent conductive film and preparation method thereof

The invention provides a low-haze transparent conductive film and a preparation method thereof. The low-haze transparent conductive film comprises a transparent substrate layer, wherein the transparent substrate layer is coated with a super hydrophilic coating formed by a super hydrophilic coating material, the super hydrophilic layer is coated with a transparent conductive layer formed by a conductive ink composition, and the wetting angle of water at the surface of the super hydrophilic coating is less than or equal to 5 degrees. After the super hydrophilic coating is coated, the light transmittance of the substrate is improved, the haze is reduced, an adhesive force between the transparent conductive layer and the substrate is enhanced, and the oxygen permeability of the transparent substrate is also reduced at the same time. By adopting the technical scheme provided by the invention, the total haze of the ultimately acquired transparent conductive film is reduced by 40% compared with that before super hydrophilic processing under the condition of keeping the conductivity to be unchanged, the light transmittance is improved by 2-5%, the adhesive force is also obviously improved, and the appearance is more transparent.

Method for preparing water-based urethane acrylate pressure-sensitive adhesive

The invention provides a method for preparing water-based urethane acrylate pressure-sensitive adhesive. According to the method, water-based urethane is chemically modified by using acrylate, and the water-based urethane and the acrylate are combined with each other in a chemical bond form, so that the synthesized water-based urethane acrylate pressure-sensitive adhesive has excellent performance of the water-based urethane and the acrylate. According to the water-based urethane acrylate pressure-sensitive adhesive, water-based urethane acrylate copolymerization emulsion and tackifying resin are used as main components. The method comprises the following steps of: firstly, reacting a hydroxy monomer, a hydrophilic chain extender and polyisocyanate which are used as main raw materials to generate polyurethane prepolymer, and adding a hydroxy-containing acrylate monomer to obtain hydroxy-terminated polyurethane prepolymer; secondly, adding a salt-forming agent to neutralize the hydroxy-terminated polyurethane prepolymer, and dispersing in water to obtain water-based polyurethane emulsion; and finally, properly polymerizing the water-based polyurethane emulsion and the acrylate to obtain the water-based urethane acrylate copolymerization emulsion, and adding the tackifying resin of different mass fractions, thereby obtaining water-based urethane acrylate pressure-sensitive adhesive emulsion.

Thermoplastic low-smoke halogen-free flame-retardant environment-friendly sheath material for power cables and preparation method thereof

The invention discloses a thermoplastic low-smoke halogen-free flame-retardant environment-friendly sheath material for power cables and a preparation method thereof. The thermoplastic low-smoke halogen-free flame-retardant environment-friendly sheath material for power cables comprises the following components in parts by weight: 60-80 parts of EVA (ethylene-vinyl acetate), 20-30 parts of HDPE (high-density polyethylene), 10-15 parts of EPDM (ethylene-propylene-diene monomer), 15-25 parts of compatiblizing agent, 100-150 parts of halogen-free flame retardant, 0.5-1 part of antioxidant 1035, 0.5-1 part of antioxidant DSTP, 1-2 parts of ethylene bis stearamide, 3-5 parts of DCP (dicumyl peroxide), 2-4 parts of zinc oxide, 1-2 parts of calcium stearate, 10-20 parts of dimethyl methyl phosphonate, 30-40 parts of nano kaolin, 2-3 parts of stearic acid and 0.5-1 part of isopropyl tri(dioctylpyrophosphate)titanate. The sheath material disclosed by the invention has the advantages of excellent physical and mechanical properties, excellent flame retardancy, favorable high/low temperature resistance, favorable oil resistance, favorable solvent resistance, favorable wear resistance, favorable ozone resistance, favorable aging resistance, high flexibility, crack resistance and the like, is very durable, environment-friendly and pollution-free, and can completely satisfy the requirements for modern power cables.

Method to prepare processable polyimides with reactive endgroups using 1,3-bis (3-aminophenoxy) benzene

Polyimide copolymers were obtained containing 1,3-bis(3-aminophenoxy)benzene (APB) and other diamines and dianhydrides and terminating with the appropriate amount of reactive endcapper. The reactive endcappers studied include but should not be limited to 4-phenylethynyl phthalic anhydride (PEPA), 3-aminophenoxy-4'-phenylethynylbenzophenone (3-APEB), maleic anhydride (MA) and nadic anhydride (5-norbornene-2,3-dicarboxylic anhydride, NA). Homopolymers containing only other diamines and dianhydrides which are not processable under conditions described previously can be made processable by incorporating various amounts of APB, depending on the chemical structures of the diamines and dianhydrides used. By simply changing the ratio of APB to the other diamine in the polyimide backbone, a material with a unique combination of solubility, Tg, Tm, melt viscosity, toughness and elevated temperature mechanical properties can be prepared. The copolymers that result from using APB to enhance processability have a unique combination of properties that include low pressure processing (200 psi and below), long term melt stability (several hours at 300 DEG C. for the phenylethynyl terminated polymers), high toughness, improved solvent resistance, improved adhesive properties, and improved composite mechanical properties. These copolyimides are eminently suitable as adhesives, composite matrices, moldings, films and coatings.

Preparation method of micron-sized highly-crosslinked polymethyl methacrylate (PMMA) microspheres

The invention relates to a preparation method micron-sized highly-crosslinked polymethyl methacrylate (PMMA) microspheres, belonging to the field of high-performance high-polymer microsphere materials. The method comprises the following steps: (1) adding a stabilizer into water, and dissolving the stabilizer to obtain a dispersing agent solution; (2) mixing methyl methacrylate (MMA), a crosslinking agent and an initiator, and completely dissolving by stirring; (3) adding the mixed solution obtained in the step (2) into the dispersing agent solution obtained in the step (1), starting stirring, heating to 45-120 DEG C, and carrying out polymerization reaction for 5-30 hours to obtain a PMMA emulsion product; and (4) repeatedly washing the PMMA emulsion product, separating to obtain a solid, and carrying out vacuum drying at room temperature to obtain the micron-sized highly-crosslinked PMMA microspheres. The preparation method is simple and easy to implement. The product has the advantages of favorable sphericity, smooth surface and high crosslinking degree, can not be dissolved or swollen when being immersed in a good solvent acetone for 6 hours, and effectively solves the problem of environmental pollution caused by discharge of organic solvents. The particle size is 5-40 micrometers.

Environment protective polyurethanes hammer paint

The invention discloses an environmental-protection polyurethane hammer paint which is applied to wood surface decoration and protection and consists of a component A, a component B and a component C; when in use, the component A, the component B and the component C can be evenly mixed by the weight ratio that component A: component B: component C is equal to 1: 0.4 to 0.6: 0.5 to 0.6; wherein, the component A consists of: short oil alkyd resin, 40 to 60 parts; long oleoresin, 2 to 5 parts; dispersing agent, 0.2 to 0.5 part; anti-sedimentation agent, 0.4 to 0.9 part; propylene glycol ether acetate 3 to 6 part; divalent ester 1 to 3 parts; pigment, 0 to 30 parts; defoamers, 0.2 to 0.5 part; leveling agent, 0.2 to 0.7 part; non-floating-type aluminum paste, 1 to 5 parts; n-butyl acetate 5 to 15 parts, polydimethylsiloxane, 0.1 to 0.5 part; the component B consists of the following materials by weight ratio: HDI trimer poly isocyanate: HDI-TDI trimer: n-butyl acetate is equal to 2 to 4: 3 to 5: 1 to 4; the component C consists of the following materials by weight ratio: n-butyl acetate: propylene glycol methyl ether acetate is equal to 7 to 9: 1 to 3. The invention has the advantagesof: 1. good paint film solvent resistance and acid and alkaline resistance, bright color, clear texture, and good hammer effective; 2. high paint film hardness and wide application range, not only being applicable to wood surface, but also being applicable to metal surface decoration and protection; and 3. triphenyl-free, low VOC, and high solid content, and meeting the requirements on environmental protection.
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