3 results about "High-refractive-index polymer" patented technology

This invention discloses a method for preparing a transparent fire-retardant wood coating, belonging to the field of coating technology. The transparent fire-retardant wood coating includes an inner coating and an outer coating. The preparation method of the inner coating is as follows: a flexible flame retardant is dissolved in water, and tea polyphenol crystals are added to form a flame-retardant mixture; then, it is mixed evenly with an amino resin to obtain a transparent fire-retardant inner coating. The preparation method of the outer coating includes: first, preparing a sulfur-containing all-organic high-refractive-index polymer by catalytic polymerization of bromoalkanes and dithiophenol monomers using an organic base; then, dissolving the polymer in a transparent organic solvent to obtain a high-refractive-index polymer solution; grinding ammonium polyphosphate and pentaerythritol and mixing them evenly with a polysiloxane emulsion to obtain a fire-retardant mixture; finally, adding the high-refractive-index polymer solution, a film-forming aid, and an amino resin to the fire-retardant mixture to obtain a transparent fire-retardant outer coating. This invention achieves good UV resistance in addition to transparency and fire resistance.

This invention relates to the field of materials technology, specifically to a polymer grating composition. The polymer grating composition comprises an initiator system, a non-reactive solvent system, and a high-refractive-index polymer monomer system; the initiator system includes a photosensitizer and an initiator; the high-refractive-index polymer monomer system includes low-viscosity monofunctional monomers, multifunctional monomers, and high-refractive-index polymer monomers; by mass percentage, the photosensitizer accounts for 0.1%-1%, the initiator accounts for 0.01%-2%, the non-reactive solvent system accounts for 10%-50%, the low-viscosity monofunctional monomer accounts for 0%-30%, the multifunctional monomer accounts for 10%-40%, and the high-refractive-index polymer monomer accounts for 10%-60%. The polymer grating composition of this invention increases the transmittance of the grating; the polymer grating composition of this invention is a high-efficiency composition, exhibiting high diffraction efficiency for both S-rays and P-rays; the polymer grating composition of this invention reduces the light scattering loss of the grating.