74 results about "Photo aging" patented technology

The invention discloses a high-corrosion-resistance powder coating and a preparation method thereof, and belongs to the technical field of powder coatings. Through modification of the resin system, the ultraviolet absorbent modified epoxy resin and the weather-resistant polyester resin are compounded, so that the ultraviolet resistance and the weather resistance of the resin system are remarkably improved, and the corrosion resistance reduction caused by light aging is avoided; the flake graphene forms an excellent physical barrier to block corrosion medium permeation, then chemical passivation of zinc phosphate is combined to inhibit electrochemical corrosion, the synergistic effect is achieved, the corrosion resistance is synergistically enhanced from the physical and chemical angles, the path of the corrosion medium is further prolonged in combination with the laminated structure of the glass flakes, and the corrosion resistance is improved. And meanwhile, the filler A and the filler B can also play a role in enhancing the mechanical strength of the coating, so that the powder coating with high corrosion resistance can be obtained on the whole.

The invention relates to the technical field of high polymer materials, in particular to a light-aging-resistant flame-retardant ABS material for an electric fitting box and a preparation method of the light-aging-resistant flame-retardant ABS material. Comprising the following raw materials: ABS resin, AS resin, ABS high rubber powder, CPE, bromotriazine, carrier-free antimony trioxide master batch, a flame retardant synergist, precipitated barium sulphate, titanium dioxide, a main antioxidant, an auxiliary antioxidant, a lubricant, an anti-dripping agent, a dispersing agent and an ultraviolet absorbent. The material has excellent flame retardant property, and the synergistic effect of the flame retardant components such as the bromotriazine and the like reaches a high flame retardant grade; the ultraviolet absorbent and the titanium dioxide can delay aging and stabilize the color; the melt flow rate is high, and the fluidity is improved through cooperation of high-melt-index ABS and low-molecular-weight AS resin; the mechanical property is good, and the raw materials cooperate to guarantee strength and toughness; the appearance quality is good, pocking marks are avoided, and the glossiness is good. The preparation process is simple, and conventional equipment and reasonable parameters ensure stability and operability.

The invention provides a thermoplastic polyester elastomer as well as a preparation method and application thereof. The thermoplastic polyester elastomer comprises aromatic dibasic acid residues and aliphatic polyol residues, on the basis that the total molar weight of the aliphatic polyol residues is 100 mol%, the aliphatic polyol residues comprise 66 to 95 mol% of micromolecular diol residues, 2 to 24 mol% of polymer polyol residues and 1.5 to 10 mol% of third polyol residues; the third polyhydric alcohol residues comprise residues derived from a benzotriazole compound and residues derived from a tetramethyl piperidine compound. The thermoplastic polyester elastomer is good in light aging resistance, the surface of a workpiece is not separated out in the processing process and after the thermoplastic polyester elastomer is placed for a long time, and the requirement of automobile interiors for color change of light-color materials after light aging is met.

The invention relates to application of Bergapten or an isomer thereof in preparation of a product for improving skin aging and / or promoting skin repair. A large number of experiments prove that Bergapten or an isomer thereof can improve skin aging and / or promote skin repair and has good safety, and the specific expression is as follows: Bergapten can activate expression of SIRT1 protein and is superior to that of an existing activator resveratrol; the Bergapten can obviously inhibit the reduction of the content of various collagens in skin keratinocytes caused by UV light aging stimulation; the Bergapten can be used for promoting the healing capability of cell scratches. In conclusion, the Bergapten or the isomer thereof has great clinical application prospect and value in preparation of products for improving skin aging and / or promoting skin repair.

The invention relates to a polymer, a color master batch composition and a corresponding polyolefin product. By designing and synthesizing an alternating copolymer of maleic anhydride and a vinyl monomer, a polar succinic anhydride chain segment and a non-polar long-carbon alkyl chain segment are alternately formed on a main chain of the alternating copolymer, so that the steric hindrance effect of the polymer and the dispersion and coating effects on the pigment are further improved. The alternating copolymer of maleic anhydride and a vinyl monomer and low-molecular-weight polyethylene wax are used as dispersing agents to be applied to the color master batch composition, the dispersing performance and the anti-aging effect on pigments can be improved, and finally prepared polyolefin products are lower in color difference, more stable in coloring performance and better in ultraviolet aging resistance. Meanwhile, a light component byproduct alpha olefin dimer generated in the alpha olefin coordination polymerization process is also utilized, the application field of the low-molecular-weight poly alpha olefin is expanded, and the economic value of the low-molecular-weight poly alpha olefin is improved.

The invention belongs to the technical field of biochemistry, and particularly relates to application of nicotinamide ribose malate in light aging resistance. The invention provides an application of nicotinamide ribose malate in light aging resistance, and particularly relates to an application of nicotinamide ribose malate in quantitative light aging resistance of human immortalized keratinocytes. According to the invention, 0.375 mg / mL to 1.50 mg / mL of nicotinamide ribose malate is used for resisting light aging of the skin, and the light aging resisting effect is improved by 12.13% to 35.09%. Particularly, 1.50 mg / mL of nicotinamide ribose malate is used for resisting light aging of human immortalized keratinocytes, the light aging resisting effect is improved by 35.09%, and the light aging resisting effect is obvious.

The invention discloses a method for testing the light aging resistance of a color changing film, and relates to the technical field of color changing films. The method comprises the following steps: matching a plurality of performance influence factor tolerance spaces based on a key parameter set; performing test risk analysis on the plurality of performance influence factor tolerance intervals, and determining a plurality of test risk factors; calling a historical test data set of the target color change film, and determining a historical test database; on the basis of the historical test database, the application distortion probability of the performance influence factors is calculated in combination with the multiple test risk factors, and multiple application distortion probabilities are obtained; performing performance test scheme balanced identification on the plurality of performance influence factor tolerance spaces, and determining a target performance test scheme; and carrying out light aging resistance test on the target color changing film based on the target performance test scheme. The technical problem that in the prior art, the reliability of the light aging resistance test of the color changing film is poor is solved, and the technical effect of improving the reliability of the light aging resistance test of the color changing film is achieved by optimizing the performance test scheme.

The invention discloses a polypeptide composition for promoting skin desquamation and a preparation method and application thereof, the polypeptide composition comprises polypeptides and a polyol preservative, the polypeptides comprise a first polypeptide, a second polypeptide and a third polypeptide, and the first polypeptide is acetyl tetrapeptide-2; the second polypeptide comprises one or more of hyaluronic acid polypeptide, red scorpion toxin and palmitoyl tripeptide-5; and the third polypeptide is prepared from one or more of acetyl octapeptide-3, palmitoyl dipeptide-7, acetyl tetrapeptide-9 and acetyl tetrapeptide-11. The polypeptide composition can significantly up-regulate the gene expression of kallikrein through a synergistic effect and promote old cutin exfoliation; meanwhile, gene expression of metalloproteinase is inhibited, and light aging is delayed. The polypeptide composition disclosed by the invention can be prepared into various cosmetics and has multiple effects of promoting skin desquamation, resisting wrinkles and repairing barriers.

The application discloses MS glue, an MS glue additive and a preparation method of the MS glue additive, and the preparation method of the MS glue additive comprises the following steps: dissolving pentamethyl piperidyl alcohol in an organic solvent, heating, and stirring; adding octadecadiene acid dimer, and stirring; adding diisopropyl bis(dioctyl pyrophosphoric acyloxy) titanate, and stirring; heating, and extracting the solvent under reduced pressure to obtain a product. In the technical scheme, the MS glue additive can effectively capture free radicals in a polymer degradation chain reaction, thereby inhibiting a photo-oxidation process, and achieving a light stabilization purpose. Through evaluation, the additive can greatly reduce performance attenuation and yellowing of the MS glue under light aging.

The invention discloses a composition and application thereof, and relates to the technical field of biological medicines and cosmetics. The invention specifically discloses an application of a composition comprising phenylethyl resorcinol and benzylidene dimethoxy dimethyl indanone in the aspects of oxidation resistance, light aging resistance and wrinkle resistance. The expression level of the HO-1 gene can be synergistically improved, and an excellent endogenous anti-oxidation effect is achieved; moreover, the polypeptide also has excellent tightening and anti-wrinkle effects, can synergistically improve the expression level of the COL-1 gene, inhibit the expression level of the MMP-1 gene and improve the expression level of the ELN gene especially in the aspect of UVA light aging resistance, and has the potential of being applied to cosmetics, kits and the like.

The present application relates to a kind of anti-metallic effect paint and its preparation method and application, the raw material of the metallic effect paint includes the following mass parts of components: polyester resin 15~30 parts, amino resin 5~15 parts, directional arrangement aid 3~8 parts, cellulose acetate butyrate 15~30 parts, metal pigment 5~10 parts, anti-sedimentation agent 1~3 parts, leveling agent 0.1~1 part, light aging aid 0.2~2 parts and solvent 20~40 parts;The directional arrangement aid uses microgel.Compared with prior art, the present application has excellent storage stability, prevents metal pigment from blooming, and has good paint film brightness and weather resistance.

The invention relates to fermentation product filtrate containing recombinant III-type collagen as well as a preparation method and application of the fermentation product filtrate, and belongs to the technical field of bioengineering. The amino acid sequence of the recombinant III type collagen disclosed by the invention is shown as any one of SEQ ID NO.2-6. According to the present invention, the amino acid sequence of the human-derived III-type collagen is truncated and optimized to obtain the series of truncated III-type collagen, and the experiment results prove that compared with the non-truncated human-derived III-type collagen, the series of the truncated III-type collagen obtained by the present invention has effects of wrinkle resistance, inflammation resistance and light aging resistance, and the molecular weight of the series of III-type collagen is 25-37 KDa and is far lower than that of human-derived III-type collagen, so that the III-type collagen is more favorable for transdermal absorption of skin.

The utility model discloses a protection device for a light aging test box, which belongs to the technical field of light aging test boxes and comprises a box body, an aging chamber is arranged on the box body, a cooling chamber is arranged in the box body, an exhaust mechanism is arranged on one side of the box body, and an air inlet box is fixedly sleeved on the other side of the box body. One side of the air inlet box extends to the inner cavity of the aging chamber and is provided with a plurality of air inlet holes, the other side of the air inlet box is fixedly sleeved with a first electric control valve, and a supporting frame is arranged in the inner cavity of the aging chamber. According to the utility model, when a to-be-aged product is placed on the support frame in the inner cavity of the aging chamber for light aging, the aged product can be watched through the perspective glass window on the box door so as to control the light aging condition, and the perspective glass window is protected through the protective rod and the protective frame, so that the aging effect is improved. And the perspective glass window is prevented from being damaged by collision.

The utility model relates to a fixing device suitable for multi-size mouse light aging models, which comprises a front base, a rear base, a hole plate and a fixing seat, the front base is connected with the rear base through a telescopic component, the hole plate is arranged at the upper end of the front base, and the fixing seat is arranged at the upper end of the rear base; the neck and the tail of the mouse are fixed, the mouse does not need to be narcotized, the mouse is suitable for mice of different sizes, the mouse is not prone to bending down and struggling off, the back of the mouse can be completely exposed to ultraviolet light and evenly illuminated, experiment interference factors are reduced, meanwhile, life safety of the mouse in the whole experiment process can be guaranteed, and the mouse is convenient to use. And the experiment result is more accurate.

The application discloses an anti-aging and insulating polycarbonate composition and application thereof, and belongs to the field of high polymer materials. The polycarbonate composition is prepared by matching specific types of voltage stabilizers and dispersants, can effectively improve the CTI electrical property of the product, makes the CTI 400V greater than or equal to 50 drops, has excellent flame-retardant property, and has sufficient light aging resistance, and is very suitable for the preparation of photovoltaic inserts.

The invention belongs to the technical field of bioengineering, and particularly relates to myrobalan fruit nano-vesicles, a preparation method and application of the myrobalan fruit nano-vesicles in skin aging resisting products. The preparation method comprises the following steps: firstly, carrying out enzymolysis on a myrobalan fruit raw material by adopting a compound enzyme preparation containing feruloyl esterase, and adding sodium alginate and a calcium chloride solution into enzymatic hydrolysate after enzymolysis to carry out precipitation treatment on nano-vesicles; and finally, treating the precipitate by adopting a sodium carbonate or sodium bicarbonate solution, fully stirring, centrifuging, and collecting the supernatant, thereby obtaining the purified product of the myrobalan fruit nano-vesicle. The preparation method of the myrobalan fruit nano-vesicle is efficient and low in cost, the content of miRNA in the obtained nano-vesicle is high, animal experiments show that the nano-vesicle can reduce the content of IL-6 inflammatory factors in experimental animal skin tissue and reduce collagen loss caused by ultraviolet rays, and the nano-vesicle has remarkable anti-aging and light aging relieving effects and can be used for preparing the nano-vesicle. The method can be applied to functional skin care products.

The invention discloses a solar simulator for a light aging test, and belongs to the technical field of illumination testing, the solar simulator comprises a test board and a universal adjusting support used for adjusting the illumination angle of a daylight illumination system, the top end of the test board is provided with a test photovoltaic panel through a support, and the two sides of the test photovoltaic panel are both provided with amplification assemblies; an air temperature simulation box is arranged on the outer side of the test photovoltaic panel, the air temperature simulation box is rotationally connected with a simulation cover through an electric hinge, a weather simulation mechanism is arranged on the end face of the simulation cover, and optical measurement assemblies are arranged on the two sides of the weather simulation mechanism. Through the arrangement of the electromagnetic base and the switching assembly, the illumination system, the temperature system and the weather system can be synchronously regulated and controlled through single current input of the daylight illumination system, complex electronic control is replaced by mechanical linkage, the fault rate is reduced, the single change of current input can meet the dynamic change of each working condition in the long-time light aging test process, and the test efficiency is improved. And the dynamic working condition switching is ensured without manual intervention.

The invention discloses a photoaging-resistant PBAT functional resin, and also discloses a preparation method and an application of the photoaging-resistant PBAT functional resin. The chemical formula of the photoaging-resistant PBAT functional resin provided by the invention is as shown in a formula I in the specification. A TMP structure is introduced into a PBAT molecular chain segment, and PBAT-TMP block copolyester with a stable structure, namely the photoaging-resistant PBAT functional resin, is formed by a chemical copolymerization method. The PBAT-TMP block copolyester can effectively capture free radicals R in polymer degradation chain reaction under the action of illumination, so that the effect of continuously resisting light aging is achieved. The light-aging-resistant PBAT functional resin prepared by the invention has long light-resistant stability and a stable structure. Formula I.

The invention relates to application of mogroside IV-E in preparation of a product for improving skin aging and / or promoting skin repair. A large number of experiments prove that mogroside IV-E can improve skin aging and promote skin repair and has good safety, specifically, mogroside IV-E can activate expression of SIRT1 protein, and the mogroside IV-E can inhibit skin aging and promote skin repair. The synthesis of elastin can be promoted, so that the reduction of the content of elastin in skin keratinocytes caused by ultraviolet aging stimulation is remarkably inhibited, and the healing capability of cell scratches can be promoted. In conclusion, the mogroside IV-E has great clinical application prospect and value in preparation of anti-aging and repairing products.

The invention discloses a cardiospermum halicacabum extract, which is prepared by the following steps: (1) taking cardiospermum halicacabum powder, adding 70-90% ethanol aqueous solution, heating and refluxing for 40-50 minutes under the condition of 65-71 DEG C, and filtering to obtain filtrate and decoction dregs; (2) flushing the medicine residues with a 70-90% ethanol aqueous solution to obtain a flushing solution, combining the flushing solution with the filtrate obtained in the step (1) to obtain a combined filtrate, adding the 70-90% ethanol aqueous solution into the combined filtrate to complement the weight lost due to ethanol volatilization, shaking uniformly, and filtering to obtain a supernatant; and (3) enabling the supernate obtained in the step (2) to pass through a microfiltration membrane with the size of 0.45 mu m. The preparation method of the cardiospermum halicacabum extract is simple, and the content of myricetin, luteolin and apigenin in the cardiospermum halicacabum extract is high. The invention further discloses application of the cardiospermum halicacabum extract in preparation of cosmetics or medicines for relieving light aging damage.

The invention discloses a polymerization inhibitor for printing ink, the printing ink and application of the printing ink. Relates to the field of ink polymerization inhibitors. The component of the polymerization inhibitor for the printing ink comprises p-hydroxyanisole, and the printing ink is selected from azo dye type printing ink or mixed printing ink of anthraquinone dye and azo dye. According to the polymerization inhibitor disclosed by the invention, p-hydroxyanisole is added into azo dye type ink or anthraquinone-azo mixed type ink as an active component, so that the reflux performance of an electrowetting display device after light aging can be remarkably improved.

The UV lamp box comprises a lamp box shell, one end of the lamp box shell is provided with a cabinet door used for placing a lens cone, the lamp box shell is internally provided with a UV curing chamber, the bottom of the UV curing chamber is provided with a plurality of uniformly arranged UV light source modules, a mounting plate is arranged above the plurality of UV light source modules, and the mounting plate is provided with a plurality of LED light source modules. The mounting plate is provided with a plurality of first light holes which are uniformly arranged, a light shielding plate is arranged above the mounting plate, a lens cone is arranged between the mounting plate and the light shielding plate, and the light shielding plate is provided with a plurality of second light holes which are uniformly arranged and are in one-to-one correspondence with the plurality of first light holes; the first light-transmitting hole and the second light-transmitting hole are respectively used for corresponding to the inner hole wall of the lens barrel; according to the UV lamp box for lens barrel aging, only the inner hole wall of the lens barrel is subjected to UV light aging when the lens barrel is aged, and the outer side wall of the lens barrel is not subjected to UV light aging, so that the outer side wall of the lens barrel is prevented from being damaged in the UV light aging process, and the aging yield of the lens barrel is improved.

The invention belongs to the field of medicines and health foods, and particularly relates to a composition for improving the NAD < + > level and application of the composition in relieving skin light injury and light aging. The composition for improving the NAD < + > level comprises wheat polar fat and an oriental cherry extract, and can also comprise ergothioneine. All the components in the composition are reasonably matched and have a synergistic effect, the NAD < + > content of skin tissues and cells can be effectively increased, inflammatory factor generation caused by ultraviolet rays is effectively reduced, enrichment of active oxygen and advanced glycosylation end products is reduced, and light damage and light aging of the skin caused by the ultraviolet rays or blue light are relieved. The compound has a very good application prospect in products for preventing, relieving and / or treating light damage or / or light aging.

The invention discloses a wood material light-aging-resistant preparation process and application thereof. The wood material light-aging-resistant preparation process comprises the following steps that 1, a wood material is soaked in a mixed solution of peroxyformic acid, NaOH, sodium sulfite and NaHCO3; 2, the treated wood material is dried at the room temperature till the water content is lower than 9%, the lignin removal rate is 80%-100%, and after the process, the wood material is in a loose fiber bundle state and is called as micro / cm cellulose; and step 3, soaking the cellulose with micro / centimeter in phenolic resin glue, and then carrying out hot pressing to obtain the photoaging-resistant cellulose plate. According to the application, the cellulose plate is used as a surface plate to cover an outdoor material for shading. A wood material is subjected to delignification treatment to a higher degree, then cellulose and hemicellulose subjected to delignification treatment are subjected to gluing and hot pressing again, the cellulose veneer with good light resistance is formed, and the cellulose veneer is firm, reliable, not prone to falling apart and capable of providing good light shading performance.

The invention provides a novel application of melia diol. The melia diol has a remarkable senescence cell removing capability in a bleomycin induced cell senescence model, an etoposide induced cell senescence model and a replicative cell senescence model; the activity of anti-apoptotic protein Bcl-2 can be obviously inhibited; the neem diol has no obvious liver and kidney toxicity while selectively removing senescent cells; the neem diol has the effects of remarkably lightening wrinkles on the back skin of a photoaged mouse, improving the transdermal moisture loss condition of the back skin of the photoaged mouse, increasing the moisture content of the back skin of the photoaged mouse, reducing the thickness of an epidermal layer and improving the fracture and content of collagenous fibers in a corium layer; the method has a wide application prospect in preparation of anti-aging products.

The invention discloses a composition for efficiently activating cell energy and delaying light aging as well as a preparation method and application thereof, and belongs to the technical field of cosmetics. The composition consists of recombinant collagen and an anti-photoaging component, wherein the anti-photoaging component is prepared from resveratrol, stone chestnut seed oil, cynara plantaginis seed oil and a chlamydomonas nitida extract according to a specific mass ratio of the resveratrol to the stone chestnut seed oil to the cynara plantaginis seed oil to the chlamydomonas nitida extract. The composition can efficiently activate cell energy and delay light aging, and has the effects of effectively resisting aging, tightening, resisting wrinkles, resisting oxidation, relieving, repairing and moistening. The efficacy is improved through the synergistic effect of the components, the safety is high through tests, the composition can be used for preparing various skin care products such as toning lotion, emulsion and essence, and a reliable technical scheme is provided for anti-photoaging skin care products.

The invention discloses a TPE composite material for an elastic tube and a preparation method of the TPE composite material. The TPE composite material comprises the following components in parts by mass: 80-120 parts of a styrene thermoplastic elastomer, 60-80 parts of white oil, 5-15 parts of a polyolefin elastomer, 10-20 parts of a rigid material, 10-30 parts of an inorganic filler, 2-5 parts of a lubricant, 2-5 parts of a compatilizer and 5-15 parts of modified carbon black. The preparation method of the modified carbon black comprises the following steps: mixing carbon black, a quaternary ammonium salt cationic surfactant and fatty amine, and performing ultrasonic treatment to obtain the modified carbon black. According to the TPE composite material disclosed by the invention, the carbon black is modified by virtue of the aliphatic amine intercalation treatment, so that the specific surface area of the carbon black is improved, the tensile strength and the rebound rate of the TPE composite material are improved by adding the modified carbon black, and meanwhile, the ultraviolet aging resistance is improved. The TPE composite material is wide in raw material source, simple in preparation process and suitable for industrial production.

The invention relates to the field of high polymer materials, and discloses a weather-proof composition resistant to separation and adhesion and a preparation method thereof.The composition is prepared from, by mass, 10-60 parts of polypropylene powder, 10-40 parts of light stabilizer, 10-40 parts of antioxidant and 5-10 parts of stabilizer, the light stabilizer is UV3853, and the antioxidant is antioxidant SEED. According to the technical scheme, on the premise that the light aging resistance is not sacrificed, the zero-separation viscosity and the high gloss retention rate are achieved at the same time, the core test requirements of the automotive trim PV1306 are comprehensively matched, and the problems that in the industry, a small-molecule light stabilizer is prone to migration and stickiness, and the gloss is greatly lost after light aging are solved.

The invention discloses a degradable polyethylene master batch, a preparation method and degradable linear low-density polyethylene. The degradable polyethylene master batch is prepared from 100 parts of LLDPE (Linear Low Density Polyethylene), 1.5 to 5 parts of antioxidant, 0.5 to 3 parts of acid acceptor, 25 to 35 parts of starch, 0.4 to 1.0 part of photosensitizer, 10 to 20 parts of anti-aging modifier, 2 to 4 parts of starch plasticizer and 8 to 15 parts of modified filler, the anti-aging modifier is prepared by melt blending of maleic anhydride grafted polyolefin and amine-terminated polyamide according to a mass ratio of 10: (3-4), and the amine-terminated polyamide is obtained by condensation polymerization of bipyridine dibasic acid and aromatic diamine according to a molar ratio of 1: (1.1-1.3). According to the invention, the problem of light aging of the current degradable polyethylene material in the use period can be effectively solved, and the negative influence of the antioxidant on the light degradation efficiency is reduced.

The utility model discloses a device for testing the light aging resistance of a plastic material. The device comprises a control box, a lampshade, a base and a water-cooling radiator, the control box comprises a control box main body, a PLC touch screen, a power switch and a working state indicator lamp; the lampshade is arranged above the base, and a reflecting cover, a temperature sensor and a high-pressure mercury lamp are arranged in the lampshade and are respectively connected with the control box through soft power lines; a plurality of sample fixing clamps are arranged on the base main body, and plastic material samples to be tested can be fixed on the sample fixing clamps; the water-cooling radiator is arranged above the lampshade and comprises a cooling fan and a water inlet and outlet pipe which circularly flows, and the lampshade is cooled and cooled through combination of air cooling and water cooling. The light aging resistance of different plastic materials can be rapidly compared, the material development period is shortened while the test efficiency is improved, the test process is safe, and the test result is accurate.