33results about How to "Transparency has no effect" patented technology

The invention discloses antibacterial shading medical polyvinyl chloride plastic and a preparation method thereof. The antibacterial shading medical polyvinyl chloride plastic comprises, by weight, 100 parts of polyvinyl chloride, 5-90 parts of a plasticizer, 5-15 parts of an auxiliary plasticizer, 1-6 parts of a heat stabilizer, 0.1-3 parts of a ultraviolet light absorbent, 1-20 parts of a migration inhibitor, 0.1-10 parts of toner, 0.1-10 parts of titanium dioxide, 0.1-5 parts of an antibacterial material and 0.1-1 part of a lubricant. The migration inhibitor is beta-cyclodextrin. The antibacterial shading medical polyvinyl chloride plastic can effectively inhibit migration or decoloring of micromolecule substances such as a plasticizer and toner, can improve transfusion apparatus safety after disinfection, can guarantee patient usage safety, can thoroughly prevent light-avoiding agent migration and illumination-caused influence on a medical agent, does not influence drug use efficiency, has excellent dyeing resistance and anti-tarnishing performances in processing or use and does not influence PVC material transparency.

The invention belongs to the polyester spinning field and relates to an 8-shaped hollow polyester fiber FDY (Fully Drawn Yarn) and a preparation method thereof. A spinning melt contains saturated fatty acid metal salt and modified polyester, wherein the mass ratio of saturated fatty acid metal salt to modified polyester is (0.0005-0.002) to 1; saturated fatty acid metal salt is fatty acid metal salt, the carbon atomic number is 12-22, the melting point is 100-180 DEG C, and the kinetic viscosity is less than or equal to 1Pa.s; a molecular chain of modified polyester comprises a terephthalic acid chain segment, a glycol chain segment and a rigid structure chain segment, and the molar ratio of the rigid structure chain segment to the terephthalic acid chain segment is (0.02-0.05) to 1; and the die swell ratio of the spinning melt is 1.23-1.33, and the after-filtration pressure during the spinning is 85-125kg/cm<2>. The prepared 8-shaped hollow polyester fiber FDY has relatively high degree of hollowness and relatively good shape-preserving effect.

The invention discloses a preparation method of a transparent toughened polystyrene functional color masterbatch and belongs to the technical field of polymer material modification. The preparation method is characterized in that GPPS as a base resin raw material, MBS and an oily flexibilizer as main functional assistants, a transparent pigment, and various processing auxiliary agents are mixed uniformly; and the mixture is mixed by a double-screw extruder and then is cut into the transparent toughened polystyrene functional color masterbatches by a water loop heating granulator. Through mixing use of the transparent toughened polystyrene functional color masterbatches and the GPPS raw material, material toughness is improved; undesirable effects produced by stress cracking on a workpiece is improved obviously; and transparent color effects of the GPPS raw material are obtained. The transparent toughened polystyrene functional color masterbatch does not influence material transparency, has wide application prospects in fields of household electrical appliance, office supplies, electronic and electrical products and package, and is especially suitable for injection molding of transparent refrigerator drawers.

The invention relates to the technical field of plastic shower curtains and particularly relates to a PVC (polyvinyl chloride) diamante shower curtain and a preparation method thereof. The PVC diamante shower curtain comprises the following raw materials in parts by weight: 80-120 parts of PVC resin, 40-60 parts of a plasticizer, 5-10 parts of a thermal stabilizer, 0.05-0.5 part of a flame retardant, 0.1-0.2 part of an anti-ultraviolet agent and 0.01-0.02 part of phthalocyanine blue. The preparation method for the PVC diamante shower curtain comprises the following steps: preparing raw materials, stirring at a high speed, carrying out primary plastification, carrying out secondary plastification, filtering in a hierarchical manner, calendaring molding and cooling rolling. The shower curtain disclosed by the invention is flame-resistant, insulated, alkaline-resistant, acid-resistant, waterproof, corrosion-resistant, tensile-resistant, ageing-resistant, antistatic, clear in grain pattern, and good in 3D (three dimensional) steric effect. And the preparation method of the PVC diamante shower curtain is simple in process, convenient to operate and control, stable in quality, high in production efficiency and capable of being applied to large-scale industrial production.

The invention belongs to the field of polyester spinning, and relates to a multilobal hollow polyester fiber FDY (fully drawn yarn) and a preparation method thereof. A spinning melt comprises a saturated fatty acid metal salt and modified polyester according to a mass ratio of (0.0005 to 0.002) to 1; the saturated fatty acid metal salt is a fatty acid metal salt with carbon atom number of 12 to 22, melting point of 100 to 180 DEG C, and dynamic viscosity less than or equal to 1Pa.s; a molecular chain of the modified polyester comprises a terephthalic acid chain segment, an ethylene glycol chain segment and a rigid structure chain segment, the molar ratio of the rigid structure chain segment to the terephthalic acid chain segment is (0.02 to 0.05) to 1, the extrusion swelling ratio of the spinning melt is 1.20 to 1.31, and the post-filtering pressure is 80 to 120kg/cm<2> during spinning. The prepared multilobal hollow polyester fiber FDY has higher hollow degree and a better shape preserving effect.

The invention provides a double-light-path ultrafast laser welding device based on light beam shaping. The double-light-path ultrafast laser welding device comprises a femtosecond laser, a half-wave plate, a polarization splitting prism, an electric control shutter, a laser beam expander, a first holophote, a dichroscope, a galvanometer system, a field lens, a to-be-welded sample and an XYZ movable welding platform. Gaussian beams emitted by the femtosecond laser sequentially pass through the half-wave plate, the polarization splitting prism, the electric control shutter, the laser beam expander, the first holophote, the dichroscope, the galvanometer system and the field lens and then are gathered on a to-be-welded sample, and the to-be-welded sample is fixed on the XYZ movable welding platform to form a Gaussian light beam welding light path. A Bessel light beam conversion system is arranged between the first holophote and the dichroscope to form a Bessel light beam laser welding light path. The invention further provides a machining method using the device. According to the welding device, double-light-path welding of different laser beams is achieved, the welding device is suitable for non-optical contact welding and optical contact welding, the welding quality can be effectively improved, and the production cost can be effectively reduced.

The invention belongs to the field of polyester spinning, and relates to a square hollow polyester fiber FDY (Fully Drawn Yarn) and a preparation method thereof. A spinning melt contains a saturated fatty acid metal salt and modified polyester; the mass ratio of the saturated fatty acid metal salt to the modified polyester is (0.0005-0.002):1; the saturated fatty acid metal salt is a fatty acid metal salt of which the carbon atom number is 12-22, the melting point is 100-180 DEG C and the power viscosity is less than or equal to 1Pa*s; the molecular chain of the modified polyester comprises a terephthalic acid chain segment, a glycol chain segment and a rigid structure chain segment; the mole ratio of the rigid structure chain segment to the terephthalic acid chain segment is (0.02-0.05):1; the die swell ratio of the spinning melt is 1.21-1.32; the after-filtration pressure of the spinning melt in spinning is 82-123kg/cm<2>. The square hollow polyester fiber FDY provided by the invention is relatively high in hollowness degree and relatively good in conformal effect.

The invention provides a nano silicon dioxide modified PVB material and a preparation method thereof. The nano silicon dioxide modified PVB material is prepared by the following steps: 1) weighing polyvinyl alcohol and deionized water, and dissolving an antioxidant under the action of mechanical stirring; 2) cooling, adding an emulsifier and nano silicon dioxide, emulsifying, adding n-butyraldehyde, continuously cooling, adding hydrochloric acid, keeping the temperature unchanged for 1-2 hours, heating to 70-75 DEG C at a constant speed, keeping the temperature for 1-2 hours, adding sodium hydroxide to adjust the pH value to be 4-4.5, keeping the temperature for 1-2 hours, washing, adding sodium hydroxide to the washed sample to adjust the pH value to be 13-14, magnetically stirring for 1-2 hours, washing with water to be neutral, and centrifugally drying; and 3) re-dissolving the dried sample in the ethanol solvent, stirring for 2-3 hours, and then pouring the mixture into a mold for drying. The method is an improvement on the PVB film of the middle layer of the automobile, so that the original glass interlayer has better strength, and the injury to personnel and articles when an impact accident occurs is effectively reduced.