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606results about How to "Good sun protection" patented technology

Lignin nano-particles with high ultraviolet protection performance and preparation method of lignin nano-particle

The invention belongs to the technical field of preparation of nano-materials, and discloses lignin nano-particles with high ultraviolet protection performance and a preparation method and application of the lignin nano-particles. The preparation method comprises the following steps: (1) dissolving 0.1-50 parts by weight of lignin in 1,000-2,000 parts by weight of an acetone / water mixed solvent to obtain a lignin organic solution; and (2) mixing the lignin organic solution in the step (1) with 1,000-4,000 parts by weight of water, and stirring to obtain the lignin nano-particles. The hydrodynamic radius of the lignin nano-particles is 50-300 nm, the lignin nano-particles are solid spherical particles of which hydrophilic groups are positioned externally and hydrophobic groups are positioned internally, the number of phenolic hydroxyl groups distributed on the unit area is large, the ultraviolet protection performance is the best, and the oxidation resistance is the most excellent. The size is controllable, the field of large-scale and high-value application of the lignin is expanded, and particularly, the lignin nano-particles which are used as ultraviolet protecting agents have huge application prospect in the field of high-end daily chemical products such as sun block and skin care.
Owner:SOUTH CHINA UNIV OF TECH

Artificial leather for carbon nano tube reinforced adsorption type environment-friendly automotive upholstery and preparation method thereof

The invention discloses artificial leather for carbon nano tube reinforced adsorption type environment-friendly automotive upholstery. The artificial leather is prepared from, by weight, 75-77 parts of polyamide-6, 25-26 parts of alkali-soluble polyester chips, an appropriate amount of a sodium hydroxide solution with the concentration of 20%, 50-53 parts of waterborne polyurethane, 5-6 parts of nano magnesium hydroxide, 3-4 parts of ammonium polyphosphate, 5-6 parts of sodium dodecyl benzene sulfonate, 3-4 parts of rutile titanium white color paste, an appropriate amount of water, 0.7-0.8 part of pregelatinized starch, 2-3 parts of liquid silica gel, 0.7-0.8 part of beta-cyclodextrin, 4-5 parts of carbon nano tubes, 4-5 parts of concentrated sulfuric acid, 0.8-1 part of cocoanut fatty acid diethanolamide and 1-1.2 parts of lignin. The artificial leather utilizes strong acid to conduct surface oxidation on the carbon nano tubes, can strengthen the interface combination effect and compatibility of the carbon nano tubes and polyurethane and improve the strength of a produced product, also has a good adsorption effect and can improve an automotive interior environment after being made into the automotive upholstery.
Owner:WUHU HUANRUI AUTO INTERIOR DECORATION

Polysiloxane composite particle cladding chemical sun-screening agent formed by p-methoxycinnamic acid esters and preparation method thereof

The invention discloses a polysiloxane composite particle cladding a chemical sun-screening agent formed by p-methoxycinnamic acid esters. A preparation method for the composite particle comprises the following steps: uniformly dispersing the oil-phase components, i.e., the chemical sun-screening agent formed by p-methoxycinnamic acid esters, an emulsifying agent, grease and an auxiliary emulsifying agent; adding the oil-phase components while homogenizing water, carrying out homogeneous stirring and cooling an obtained mixture to room temperature so as to obtain nanometer emulsion containing the chemical sun-screening agent formed by p-methoxycinnamic acid esters; preparing a solution of hydrolysates of organosilicon monomers, mixing the solution with the nanometer emulsion containing the chemical sun-screening agent formed by p-methoxycinnamic acid esters, adjusting the pH value of an obtained mixture to be 7.5 to 13.5, controlling temperature to be 0 to 100 DEG C, a rotating speed to be 10 to 1000 r/min and rotating time to be 0.1 to 24 h so as to obtain a fluid suspension of polysiloxane composite particles cladding the chemical sun-screening agent formed by p-methoxycinnamic acid esters and carrying out washing, centrifugation, drying and the like on the fluid suspension so as to obtain a final product.
Owner:SHANGHAI INST OF TECH

Multifunctional automobile awning

The invention relates to a multifunctional automobile awning; the roof of an automobile is provided with two multifunctional awnings in parallel along the direction vertical to the advance direction of the automobile; each multifunctional awning comprises a base, a winding shaft and a pulling mechanism, wherein the base is fixed on the roof of the automobile; the winding shaft can rotate relatively to the automobile in the plane which is roughly parallel to the roof; the pulling mechanism is arranged on the base and is used for pulling a cloth support rod to move; the winding shaft is arranged on the pulling mechanism; the multifunctional automobile awning has two states; when the multifunctional automobile awning is in the first state, the axis of a winding drum is parallel to the advance direction of the automobile, awning cloth is wound on the winding drum, and the winding shaft is used as a luggage rack; when the multifunctional automobile awning is in the second state, the axis of the winding drum is vertical to the advance direction of the automobile, and the awning cloth is unfolded on the roof so as to cover the automobile. The invention aims at providing the multifunctional automobile awning which can be used as the automobile luggage rack, and the multifunctional automobile awning is convenient and fast to use and attractive in appearance.
Owner:王玲
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