6results about How to "High blackness" patented technology

This invention relates to the field of continuous internal mixing and extrusion equipment technology, and discloses a three-rotor continuous internal mixing and extrusion equipment, including a mixer housing, rotors one, two, and three arranged side by side in the mixer housing, a feed port on the mixer housing, and a drive mechanism. Through axial partitioning of "conveyance, pre-dispersion, high-pressure crushing, and homogenization," the conveying function and the ultra-fine dispersion function are decoupled in physical space. The second mixing zone can focus on establishing an extreme shear environment sufficient to break up stubborn carbon black agglomerates, while the first mixing zone and the mixing output zone ensure a high-throughput, stable supply and output of materials. This solves the inherent contradiction in traditional twin-rotor / twin-screw masterbatch production where "increasing blackness requires sacrificing output," enabling continuous and stable production of uniformly dispersed, high-blackness, and crystal-point-free masterbatch with high capacity. The optimized rotor configuration reduces unnecessary shear heat generation and pressure backflow losses, allowing energy to be more concentrated on the effective pigment dispersion process.

The application belongs to the technical field of polyphenylene sulfide materials, and discloses a high-light black bright polyphenylene sulfide material and a preparation method and application thereof.Raw materials of the application are as follows: 40-77 parts of polyphenylene sulfide resin, 20-50 parts of glass fiber, 2-10 parts of black sand, 1-5 parts of a compatilizer, 0.1-0.3 parts of a dispersing agent, 0.1-0.5 parts of a lubricant, and 0.1-0.3 parts of a coupling agent.The polyphenylene sulfide material is made darker by adding the black sand, and is made brighter by adding the black sand, the lubricant and the dispersing agent, and the black sand simultaneously increases the blackness and the brightness, thereby improving the surface gloss of the polyphenylene sulfide material, and simultaneously making the polyphenylene sulfide material have high toughness and high rigidity.

The extra-black color paste for coloring the gum fiber stock solution comprises the following raw materials in parts by weight: 35-40 parts of modified carbon black, 10-15 parts of a dispersing agent, 2-4 parts of a pH regulator and 30-35 parts of water. According to the invention, the surface polarity of the carbon black can be improved, agglomeration can be reduced, ball milling coating is carried out through an additive solution (containing a basalt fiber modifier, boron nitride, chitosan and yttrium nitrate), the dispersion uniformity of carbon black particles is further improved, the light absorption capability can be enhanced through the uniform dispersion of the carbon black particles, the blackness of the color paste is greatly improved, and the coloring requirement of special black is met.

The invention relates to the technical field of ink preparation, in particular to a high-blackness ink formula for LED display packaging and an organic silicon modified resin gradient dispersion process. The high-blackness ink formula is prepared from, by mass, 8-20 parts of high-blackness composite pigment, 30-50 parts of organic silicon modified resin, 2-8 parts of polymeric dispersant, 1-5 parts of functional additive and 15-35 parts of high-purity solvent. The organic silicon modified resin provides excellent high and low temperature resistance and yellowing resistance, the unique molecular structure of the organic silicon modified resin is more beneficial to wetting and coating of pigment particles, the three-stage gradient dispersion process is matched with online monitoring, and through stepped increase of the rotating speed and the temperature and ultrasonic assistance, the high-temperature-resistant and anti-yellowing performance of the pigment is improved. Progressive dispersion of the pigment from preliminary wetting to deep coating is realized, and nanoscale uniform distribution and long-term stability of the pigment in resin are ensured. The finally prepared ink has the comprehensive advantages of high blackness, low light transmittance, strong adhesive force, wide process window and the like, and perfectly meets the packaging requirements of high-end LED display.

This invention belongs to the field of polyurethane resin technology, and provides a polyurethane resin, polyurethane synthetic leather, its preparation method, and applications. The raw materials for preparing the polyurethane resin, by mass fraction, include the following components: 11%-18% modified polyol, 3%-9% bio-based polyol A, 0.01%-0.02% antioxidant, 0.001%-0.003% catalyst, 5%-7% isocyanate, 0.5%-3% chain extender, 0.1%-0.4% terminator, 0.02%-0.04% anti-tack aid, 0.5%-3% polyether aid, and 68%-73% solvent. The raw materials for preparing the modified polyol include bio-based polyol, alkanolamine, and diacid; the bio-based polyol A includes bio-based polypropylene carbonate diol. The polyurethane synthetic leather prepared by this invention has good anti-slip properties, excellent color fastness to perspiration, and high blackness, making it suitable for yoga mats.

The present invention addresses the problem of realizing bismuth sulfide which readily reflects infrared light and which has a degree of blackness that is equal to or greater than that of carbon black. The present invention pertains to bismuth sulfide particles which include aggregated secondary particles in which primary particles are aggregated, and in which the cumulative 50% diameter (D1) in a cumulative volume distribution, as measured by a laser diffraction / scattering particle size distribution measuring device is 0.2 µm to 10 µm, inclusive. Included is a step in which a bismuth compound and a sulfur compound are heated at 30°C to 100°C, inclusive, in a dispersion medium in the presence of a protective agent.