9results about How to "Improve light resistance" patented technology

The application belongs to the technical field of electromagnetic wave absorbing composite materials, and discloses a high-strength electromagnetic wave absorbing composite material and a preparation method thereof.The high-strength electromagnetic wave absorbing composite material is composed of a wave-transparent layer, a loss layer and a reflection layer, wherein the wave-transparent layer is prepared from glass fiber cloth, quartz fiber cloth, epoxy resin, wave-absorbing polyurethane foam and ultraviolet absorber, the loss layer is prepared from silicon carbide, graphite, conductive fiber, corrosion inhibitor and antioxidant, and the reflection layer is prepared from carbon fiber, graphite, copper powder and preservative.The wave-transparent layer obtained by adding ultraviolet absorber and epoxy resin can enhance the corrosion resistance and light resistance of the wave-transparent layer, the loss layer obtained by adding corrosion inhibitor and antioxidant can enhance the corrosion resistance of the loss layer, and the reflection layer obtained by adding preservative can resist corrosion at the connection between the electromagnetic wave absorbing composite material and other articles, so as to enhance the comprehensive strength of the electromagnetic wave absorbing composite material.

This invention discloses a light-resistant biodegradable plastic, its preparation method, and its application in dustproof netting. The raw material composition of the light-resistant biodegradable plastic, by weight, includes: 60-70 parts polylactic acid (PLA), 10-15 parts lignin, 5-10 parts toughening agent, 5-8 parts UV-shielding agent, 3-5 parts compatibilizer, 1-2 parts composite nucleating agent, and 0-0.5 parts colorant. The UV-shielding agent is composed of sericite, glass microspheres, and fluorite powder. The layered structure of sericite and the spherical structure of glass microspheres reflect ultraviolet light from multiple angles, while the fluorite powder absorbs and converts the transmitted ultraviolet light, thereby shielding ultraviolet rays and increasing the light resistance of PLA. A compatibilizer is used to modify the nano-lignin, which absorbs ultraviolet light and converts the light energy into heat energy in a timely manner, preventing ultraviolet light from attacking the PLA chain segments. It has stable processability, low cost, and stable raw material supply, making it suitable for use in dustproof netting.

This invention provides a method for dyeing with vat dyes in an overflow dyeing machine. The use of a dye premix significantly improves dyeing performance. The cationic properties of modified cationic starch electrostatically adsorb onto fabric fibers, allowing the coated dye particles to quickly and evenly adhere to the fabric surface. This avoids localized color differences caused by uneven dye dispersion in the dye bath, and the water flow impact in overflow dyeing prevents localized dye aggregation, effectively improving dyeing uniformity and ensuring consistent dyeing results for the same batch of fabrics. The stable structure formed by the cross-linking of modified cationic starch and vat dye forms a protective film on the fabric fiber surface after color fixation, enhancing the binding stability between the dye and fiber, reducing damage to dye molecules from external factors such as light, improving the dye's lightfastness and the fabric's sunlight fastness. Its film-forming properties also make the dye and fiber bond more firmly, preventing fading.

The present application relates to a kind of naphthalimide derivative polymer dyes, yellow photosensitive resin composition and its application, the structure general formula of dye is as follows: general formula (I);Wherein, n is the positive integer of 1-100, 0 < a ≤ 100, 0 ≤ b < 100, and a+b=100;X1-X4 each is independently selected from any one of hydrogen atom, alkyl, aryl or heteroaryl substituent, Y1-Y5 each is independently selected from any one of hydrogen atom, alkyl, aryl or heteroaryl substituent, Z is selected from any one of oxygen atom, nitrogen atom or sulfur atom;R1-R3 each is independently selected from any one of hydrogen atom, alkyl, alkenyl, ether group, substituted alkyl, aryl or heteroaryl substituent.Compared with prior art, the naphthalimide derivative polymer dyes have high solubility, excellent light resistance and heat resistance, and the yellow photosensitive resin composition prepared based on the dye has high color density.

The fluorane dimer compounds of the present invention are represented by the following general formula (1).

The invention relates to the technical field of computer vision and robots, and provides a pharmacy unmanned vehicle path planning and drug matching method based on JPS and RRT algorithms, and the method comprises the steps: constructing a pharmacy environment map, and determining the real-time position of an unmanned vehicle; performing unmanned vehicle path planning by adopting a JPS-RRT * algorithm to obtain a final driving path; the method comprises the following steps: acquiring a target drug image, constructing a drug feature template library, periodically acquiring drug images in a current visual field, pre-processing the drug images, and matching the pre-processed drug images with the drug feature template library by adopting an SAD template matching algorithm to obtain a drug classification result; and controlling the unmanned vehicle to move to the target position according to the final driving path, and executing a corresponding medicine grabbing or sorting task according to a medicine classification result.

The present application relates to the surface treatment method of pigment, especially relates to a kind of fine surface treatment method of green zinc halogenation phthalocyanine (pigment). Zinc halogenation phthalocyanine is added to NaCl-AlCl3 molten salt system, then ester is added, after reaction, the reactant is watered out zinc phthalocyanine halide, that is, the finished product pigment zinc halogenation phthalocyanine with excellent performance is obtained.The method of the present application uses a new method by controlling the parameter condition of reaction, and prepares green zinc phthalocyanine pigment with small particle size and concentrated distribution and excellent performance, simultaneously proposes a new process route for fine surface treatment of zinc halogenation phthalocyanine, reduces the process method of secondary agglomeration of zinc halogenation phthalocyanine, the present application is simple, easy to implement, and has very good application prospect.

The application provides a kind of phthalocyanine dye containing polymerizable group and a synthesis method and application thereof.The application relates to the field of functional organic dyes, and provides a kind of phthalocyanine dye containing polymerizable group and a synthesis method and application thereof, which introduces halogen atoms, long alkyl chains and polymerizable active groups into phthalocyanine as a parent structure.The active groups introduced can be crosslinked with resins or monomers in a color photoresist component, so that the stability of a thin film can be improved, and the transmittance loss can be reduced.The application overcomes the problem that the light resistance, heat resistance and migration resistance of dye molecules in the prior art are still much poorer than those of pigments.A kind of phthalocyanine dye containing polymerizable group has the structure shown in the following general formula I.

The present application relates to a method for improving the performance of aerogel coatings using water-based color paste, including four steps of water-based color paste nanoparticle preparation, environmentally friendly colored water-based color paste preparation, composite phase change aerogel slurry preparation and water-based color paste addition to aerogel; by adding water-based color paste nanoparticles, environmentally friendly dispersants, adding microcapsule phase change materials in the preparation of aerogel, and adding dispersants, bark extraction and various additives in the mixing process of the last two; the water-based color paste is added to the aerogel, which provides a healthier and more environmentally friendly coating option, optimizes the brightness and durability of the coating color, and can improve the appearance quality and service life of the electric products related to water-based color paste coatings, and has a broad market prospect and application demand.