84results about How to "Strong Antioxidant" patented technology

The invention relates to a surface treatment process of a copper foil for a high-Tg halogen-free plate, belonging to the technical field of a production process of a high-precision electrolytic copper foil. In the surface treatment process provided by the invention, a structure shape of a coarsening layer is changed by using a special mixed additive in a coarsening step so as to improve anti-stripping strength; an ultra-fine nanoscale electroplated nickel-zinc alloy is used as a barrier layer to assure the corrosion resistance of the copper foil. Internal properties and pressure plate back color of the copper foil which is treated by the process provided by the invention are similar with those of the copper foil which is imported abroad; the anti-stripping strength on the high-Tg (Tg170) and the halogen-free plate is more than 1.5 N/mm; and the copper foil has characteristic of environmental friendliness and does not contain harmful matters, such as arsenic, antimony, mercury, cadmium, hexavalent chromium and the like.

The invention provides a preparation method of camellia extraction liquid. The method comprises the following steps of 1) removing impurities of fresh camellia and/or fresh camellia buds; cutting up the fresh camellia and/or fresh camellia buds into small sections for use as raw materials; 2) taking a certain number of raw materials; putting the raw materials into an ultrasonic kettle; adding a solvent with the mass ratio being 1:(3-30); uniformly stirring the mixture; adding a certain amount of inorganic acid and/or organic acid; regulating the pH value to 1.3 to 3.0; soaking the materials for 10 to 30 min; 3) then performing ultrasonic treatment for 30 to 60min; controlling the ultrasonic frequency to be 20 to 25KHz, the ultrasonic power to be 1.0 to 2.0KW and the ultrasonic temperature to be 15 to 50 DEG C; then performing filtration, sterilization and detection to obtain camellia extraction liquid. The camellia extraction liquid maintains the color, luster, flavor and effective active ingredients of the camellia to the maximum degree; the anti-oxidation functional ingredients are overall; the contents are high; the safety and the stability are high; cosmetics prepared by using camellia extraction liquid as active ingredients have the excellent whitening, spot-reducing and anti-aging efficacies.

The invention discloses a high-temperature-resistant radar and infrared compatible stealth material based on a frequency selective surface. The high-temperature-resistant radar and infrared compatible stealth material comprises a dielectric layer I, a resistance layer, a dielectric layer II and the frequency selective surface from inside to outside sequentially, wherein the dielectric layer I and the dielectric layer II are made of oxide fiber reinforced oxide based composite materials; the resistance layer mainly comprises a high-temperature-resistant resistance coating; the frequency selective surface mainly comprises an anti-oxidative metal coating with periodical patterns, high temperature resistance and low infrared emittance. The preparation method comprises steps as follows: the dielectric layer I is prepared firstly, and the resistance layer is prepared on the dielectric layer I with a silk-screen printing technology; then the dielectric layer II is prepared on the resistance layer; finally, the frequency selective surface is prepared on the dielectric layer II with a physical deposition technology and a laser etching technology, and the stealth material is prepared. The radar and infrared compatible stealth material can be resistant to high temperature of 1,000 DEG C or higher, and has better high temperature resistance and excellent oxidation resistance.

The invention discloses a selenium, zinc and calcium rich Chinese yam cultivation method including the steps of (1), soaking seedlings or roots of Chinese yam by selenium fertilizer diluent for two to four hours, planting or culturing seedlings after taking the seedlings or roots out of the selenium fertilizer diluent to dry the same, and applying 25-150kg of quick lime per mu according to the state of pH value of soil; (2), mixing selenium fertilizer and zinc fertilizer into base fertilizer during fertilizer applying; (3), mixing 10-50 g of selenium fertilizer per mu with water to water the roots and then applying topdressing; (4), spraying selenium fertilizer diluent, zinc fertilizer diluent and calcium fertilizer diluent to leaf surfaces of Chinese yam during the growth period by two to six times. By the selenium, zinc and calcium rich Chinese yam cultivation method, selenium, zinc and calcium contents of Chinese yam are increased further, nutritive value and health value of Chinese yam are enriched, and physical health of people eating the Chinese yam can be improved.

The invention discloses a whitening freckle-removing cosmetic containing a cordyceps sinensis extract. The whitening freckle-removing cosmetic is prepared from cordyceps sinensis, dasiphora davurica leaf, root of gardenia jasminoides ellis., ilex rotunda thunb. bark, Chinese rose leaf, Chinese elm bark, thorny elaeagnus leaf, hovenia dulcis thumb, perilla stem, uncinata spikemoss herb, semen cassiae, white chrysanthemum flower, coltsfoot flower, honeysuckle flower, fructus forsythiae, common fennel, long pepper, chinaberry fruit, herba elsholtziae, ash bark, fruit of beautiful sweetgum, rush, buffalo horn and concha arcae. The whitening freckle-removing cosmetic is capable of boosting skin metabolism, promoting circulation of skin blood, increasing skin nutritions, effectively removing free radicals, eliminating pigmentation, relieving skin wrinkles and freckles, and making the skin finer, smoother, whiter and more elastic.

A carbon / carbon composite material oxidation-resistant coating comprises the components (by weight portion) of silicon 10%-15%, boron 10%-15%, microcosmic salt 60%-70%, aluminum oxide 5%-10%, the preparation process comprises mixing the four substances, stirring evenly , coating the surface of carbon/carbon composite material, heat treating 2-3 hours (nitrogen atmosphere) at 800 deg. C to 900 deg. C, wherein the coating and high temperature heat treatment processes are carried out under atmospheric pressure.

The invention relates to a preparation method of a composite alloy coating on a tantalum-tungsten alloy. The preparation method comprises the following steps of 1, MoSi2 coating slurry preparation, 2, MoSi2 coating high-temperature sintering, 3, Hf-Ta alloy coating slurry preparation, and 4, Hf-Ta alloy composite coating sintering. According to the preparation method, the product surface is spray-coated with the prepared MoSi2 coating as a transition layer, and the surface of the transition layer is spray-coated with an Hf-Ta alloy coating. The preparation method solves the problem of Hf-Ta alloy coating and base material bonding and tantalum-tungsten alloy high-temperature oxidation. The prepared composite alloy coating is uniform and compact, has no defects such as holes and cracks and has good oxidation resistance.

A lithium ion battery electrolyte comprise a non-aqueous organic solvent, a lithium salt and an additive, wherein that additive comprises dicyclohexylcarbodiimide, amino compound and isocyanate compounds. In the technical scheme provided by the invention, the additive of the electrolyte of the lithium ion battery comprises dicyclohexyl carbodiimide, amino compounds and isocyanates, wherein dicyclohexyl carbodiimide assists amino compounds and isocyanate compounds to participate in film formation, By forming a chain or network polymer film on the surface of the positive and negative electrodesof the lithium ion battery which is insoluble in the electrolyte and has strong oxidation resistance and good toughness, the impedance of the battery is reduced, and the high-temperature cycling performance and the rate performance of the lithium ion battery are improved.

The invention relates to a migratory phase separation method for preparing core-shell structure nanofibers. The method includes dissolving fluoropolymer and associative polymer in an organic solution, heating and stirring till being dissolved completely, and mixing the two solutions by a certain mass proportion to obtain an electrostatic spinning solution; utilizing the electrostatic spinning solution to spin electrostatically, collecting fibers on a receiver, processing the obtained fibers in a vacuum oven with the constant temperature of 30 DEG C for 24 hours, and obtained the core-shell structure nanofibers. The invention aims to provide a preparing method of the core-shell structure nanofibers, the low surface of fluorine can allow the fluoropolymer to migrate to the surface rapidly during electric spinning, the core-shell structure nanofibers with clear phases are prone to forming, the preparing process is simple and easy to operate, the requirements on equipment is low, energy consumption is low, and preparing cost is also low.

The invention discloses a lubricating grease composition and a preparation method of the lubricating grease composition. The lubricating grease composition consists of the following materials by weight: 70-85% of lubricating grease base oil, 12-27% of a double thickening agent and 0.1-3% of an additive, wherein the lubricating grease base oil is silicone oil. The preparation method adopts silicone oil with good high-temperature and low-temperature performance as the lubricating grease base oil, is simple in process, and effectively reduces the energy consumption relative to a two-step method.In the lubricating grease composition of the invention, nano-SiO4 is used as a thickening agent and the additive simultaneously. The additive also comprises such solid additives as an antioxidant, a rust protection agent and the like. The lubricating grease composition of the invention has good colloid stability, mechanical stability and high and low temperature performance, and can be suitable for an extreme operating condition.

The invention discloses low-temperature brazing solder for aluminum substrate materials. The solder is leadless solder; and not only the solidified structure is improved compared with needle zinc-phase tin-zinc eutectic alloy and the wettability is improved but also the solder can form joints with higher strength with aluminum substrates. The low-temperature brazing solder for the aluminum substrate materials comprises the following chemical compositions in percentage by weight: 9 to 15 percent of zinc, 0.01 to 2 percent of aluminum, 0.01 to 2 percent of silver, 1 to 3 percent of bismuth, and the balance being tin. The leadless solder alloy obtained by the proposal does not use toxic lead, has stronger antioxidation and better wettability compared with the prior Sn-Zn alloy, and is more suitable for aluminum soft soldering compared with the prior Sn-Ag-Cu solder alloy; and the joints have better performance and lower cost.

The invention discloses a dioxygen activating mask for comprehensively repairing skin and assisting skin to regenerate, activate and become fine and smooth, and bright. The dioxygen activating mask is prepared from the following components in percentage by weight: 0.01%-0.1% of saccharomyces lysate extract, 0.005-0.025% of astaxanthin, 0.1%-0.3% of opuntia extract, 0.01%-0.03% of orange flower extract, 0.01-0.03% of asiatic pennywort herb extract, 0.1%-0.3% of mayweed flower extract, 1%-5% of fibroin, 0.3%-0.6% of green alga extract, 3%-5% of glycerol, 1.0%-3.0% of sodium lactate, 1.0%-3.0% of sodium pyrrolidonecarboxylate (PCA), 0.03%-0.2% of sodium hyaluronate, 80%-90% of water and 0.2%-3% of accessories.

The invention provides a phosphate-hydraulic oil composition. The phosphate-hydraulic oil composition comprises tributyl phosphate, trisisobutyl phosphate and alkyl diaryl phosphate, wherein the tributyl phosphate occupies 60-90% of a total mass of a base solution; the trisisobutyl phosphate occupies 1-35% of the total mass of the base solution and the alkyl diaryl phosphate occupies 1-30% of the total mass of the base solution. A viscosity index improver prepared by polymerization of alkyl (alkyl)acrylate monomers and alkyl (isomeric alkyl)acrylate monomers can also be added in the composition. The phosphate-hydraulic oil composition provided by the invention has excellent flame resistant properties, low-temperature fluidity, shearing stability properties, antioxidant performance, metal corrosion inhibition performance, electrical erosion resistance and anti-corrosion performance.

The invention discloses an insect prevention wood plastic interior door and a preparation method of the insect prevention wood plastic interior door. The interior door is prepared from the following raw materials in percent by weight: 10-15 percent of PVC resins, 0.3-0.7 percent of stearic acid, 0.4-0.6 percent of chlorinated paraffin, 0.3-0.6 percent of ACR processing agent, 0.3-0.5 percent of CPE, 0.3-0.5 percent of Ba/Cd/Zn stabilizing agent, 4-7 percent of light calcium carbonate, 2-4 percent of DIOP plasticizers, 0.2-0.5 percent of BPO cross-linking agents, 0.04-0.06 percent of light stabilizers, 28-35 percent of wood powder, 38-50 percent of PVC waste strips, and 1-3 percent of Chinese medicine residue powder. According to the insect prevention wood plastic interior door, the Chinese medicine residue powder having an effect of desinsectization or insect protection is added into a formula, so that a door plate can keep in a good condition in a moist or bad-illumination room, the breakage and the crevice are avoided, and the service life is prolonged under a moist condition.

The invention belongs to the field of antioxygen, in particular to an emulsion antioxygen and a preparation method thereof. The emulsion antioxygen is emulsified and compounded by the following raw material reagents at the proportion: main antioxygen, auxiliary antioxygen, emulsifying agent, dispersing agent and defoaming agent. The emulsion antioxygen has better oxidation resistance than other similar antioxygens and can achieve the optimal oxidation resistance effect, and the total solid content of the emulsion antioxygen is more than 52%. The emulsion antioxygen has the advantages of good oxidation resistance effect, big activity, low volatility, high durability, no pollution and the like and is especially suitable for protecting tint and pollution-free color polymer thereof. The emulsion antioxygen can be favorably dispersed in ABS (Acrylonitrile Butadiene StyreneAcrylonitrile Butadiene Styre) rubber latex, is ideal antioxygen used preparing ABS by emulsion polymerization and has excellent dispersibility. According to the emulsion antioxygen, the heating oxygen aging time of the ABS resin can be prolonged in the ABS production, the oxidation inducing temperature of the ABS resin is improved, the phenomenon that the ABS resin becomes yellows in the production and processing process thereof can be prevented, the strength of a product can be improved, and the oxidation resistance problem for preparing ABS by emulsion polymerization can be solved.

The invention relates to a two-step preparation method of an acrylamide copolymer. The two-step preparation method is characterized in that by initiation of a novel low-temperature oxidation-reduction composite initiation system, acrylamide (AM), 2-acrylamide-2-methylpro panesulfonic acid (AMPS) and allylthiourea undergo an aqueous solution adiabatic polymerization reaction, rubber bricks are subjected to primary granulation, the rubber granules are subjected to hydrolysis, the hydrolysis product is subjected to secondary granulation, and the granules are dried, crushed and screened so that the acrylamide copolymer is obtained. The acrylamide copolymer has good high-temperature oxidation resistance. The invention discloses the oxidation-resistant polyacrylamide oil-displacement agent and the preparation method thereof.

The invention provides preparation of algal polysaccharide and application of algal polysaccharide in cosmetics.The preparation method of the algal polysaccharide includes the steps that algae are smashed and then purified with methanol; after methanol in residues is sufficiently removed, acid-soluble polysaccharide in the residues is extracted with a hot acid extraction method; macromolecular polysaccharide ingredients with low bioavailability are removed through ethanol precipitation; after ethanol in the residual solution is recycled, dialysis and freeze-drying are carried out, and the algal polysaccharide is obtained.The molecular weight of the algal polysaccharide is 8-35 kDa, and the algal polysaccharide has significant antioxidation and moisturizing activity and can be applied to the field of cosmetics.Moisturizer prepared from the algal polysaccharide is used on the skin surfaces of the hands, the face, the neck and the like and has the effects of nourishing and moisturizing the skin, reducing wrinkles and delaying ageing.Eye cream prepared from the algal polysaccharide is used around the eyes and has the effects of nourishing and moisturizing the skin, reducing wrinkles and delaying ageing.

The invention relates to a carbon/carbon composite with an anti-oxidant coating, a preparation method and the application thereof. The carbon/carbon composite comprises a carbon/carbon composite substrate, a SiC layer and a second coating, wherein the carbon/carbon composite substrate is uniformly coated with the SiC layer; the SiC layer is coated with the second coating; the second coating is a zirconium-containing glass ceramic coating; the second coating comprises the following components by mass: 55-85% of SiO2, 5-35% of ZrO2, 2-10% of Al2O3, 5-15% of B2O3, 1-3% of Li2O and 2-6% of Y2O3. The preparation method comprises the following steps: preparing the SiC layer by a pack siliconizing process; preparing the second coating by a brushing method. The process of the invention is simple and convenient to operate; the coating is controllable in thickness, firmly and uniformly bonded to the carbon/carbon composite substrate, excellent in oxidation resistance and thermal shock resistance below 1400 DEG C, and capable of realizing industrial production.

The invention belongs to the technical field of cosmetics, and particularly relates to an almond-polypeptide-containing mild moisturizing skin cream, antiaging lotion and eye cream, almond polypeptides, and a preparation method of the skin care products. The almond polypeptides are prepared by the following steps: degreasing almonds, extracting proteins by alkali extraction and acid precipitation, carrying out enzymolysis by alkaline proteinase, desalting through a DA-201C macroporous adsorbent resin, eluting with a 75% ethanol-water solution, and carrying out freeze-drying. The almond polypeptides have abundant varieties of amino acids, and thus, have the antioxidation activity. The mild moisturizing skin cream contains 0.2-3 wt% of the almond polypeptides. The antiaging lotion contains 0.5-5 wt% of the almond polypeptides. The eye cream contains 1-5 wt% of the almond polypeptides. The almonds provide economical high-added-value application. The sensory evaluation result indicates that the prepared skin cream, lotion and eye cream have the skin care effect.

The invention relates to the field of lubricating oil, and particularly discloses a composition used for food-grade gear oil, a preparing method thereof, gear oil including the composition and a preparing method of the gear oil including the composition. The composition includes, by weight, 5-10 parts of a food-grade antioxidant, 10-25 parts of a food-grade antiwear agent, 0.5-1.5 parts of a food-grade metal deactivator, 1.0-2.5 parts of a food-grade antirust agent, 0.5-1.5 parts of a food-grade corrosion inhibitor, 0.2-1.0 part of a food-grade oiliness agent, 0.1-0.5 part of a food-grade anti-emulsification agent and 0.01-0.3 part of a food-grade defoamer, with the balance being food-grade base oil A and the total weight parts being 100 parts. The composition and the gear oil including the composition have excellent waterproofness, oxidation resistance, wear resistance, extreme pressure properties, micro pitting resistance, rust resistance, emulsification resistance and foam resistance, can effectively meet requirements on heavy duty, extreme pressure properties, wear resistance, emulsification resistance, rust resistance, micro pitting resistance, and the like of gear systems in a food processing process, are nontoxic and harmless and do not contaminate foods.

The invention relates to grape seed polyphenol handmade soap and a preparation method thereof and belongs to the technical field of preparation of daily wash supplies. The grape seed polyphenol handmade soap is prepared by, by weight, 5 parts of grape seed polyphenol concentrated solution, 3-8 parts of grape seed oil, 5-15 parts of olive oil, 10-18 parts of palm oil, 20-30 parts of coconut oil, 5-8 parts of sweet almond oil, 5-10 parts of avocado oil and 10-12 parts of NaOH. The grape seed polyphenol handmade soap prepared by the method can retain grape seed polyphenol and glycerol inside completely, thereby having better oxidation resistance and moisturizing effect than commercially-available soap and grape seed polyphenol of an equivalent amount. In addition, by adding the grape seed polyphenol, saponification process of olive oil, palm oil, coconut oil, sweet almond oil and avocado oil is optimized, so that foaming performance of the handmade soap is better than that of soap without grape seed polyphenol added, and the grape seed polyphenol handmade soap is more and thicker in foam.

The invention discloses a sliding plate antioxidation paint and a preparation method thereof. The sliding plate antioxidation paint is prepared by the following raw materials in weight percent: 10-70% of antioxidation function additive, 15-80% of binding agent and 5-20% of diluent. The preparation method comprises the following steps: mixing antioxidation function additive and binding agent, and grinding when the ratio of ball to material is (4-1):1, rotating speed is 200-800r/min, and ball-milling time is 5-40h; adding diluent with content in weight percent being 5-20% into the ball-milled paint, and mixing uniformly to obtain a finished product. The inventive paint is gray black and pasty, can be brushed by common technique, and the thickness of coating is adjustable in large range. The preparation method of the antioxidation paint provided in the invention has available raw materials, simple technique and preparation, low cost, and easy scale production; and the obtained paint has outstanding antioxidation and self-lubricating performances at high temperature.

The invention discloses plant source composition with an antioxidant function. Three types of natural phytochemicals are adopted as raw materials and combined according to a certain proportion, and the best antioxidant effect is obtained. The plant source composition comprises main nutrition components as follows: astaxanthin, vitamin E, resveratrol and camellia oil. The plant source composition has the advantages as follows: the three types of natural phytochemicals extracted by pure natural plants as raw materials are adopted as a basic formula and matched with wild camellia oil as a nutrition carrier, the recommended standard of people's recommended dietary allowance is taken as the basis, strong antioxidation efficacy of the three types of natural phytochemicals is sufficiently played, and the plant source composition has the functions of oxidative damage adjustment, immunity enhancement and nutrition enhancement. A person takes certain amount of plant source composition, the daily antioxidant function adjustment demand can be met accordingly, and the plant source composition has good health care efficacy.

The invention discloses an essence composition for delaying skin aging and a preparation method thereof, and belongs to the technical field of cosmetics. Through the key points of the technology, theessence composition for delaying skin aging comprises the following components in parts by weight: 0.025 to 0.2 part of N-palmitoyl hydroxyproline cetyl ester, 0.2 to 1 part of p-hydroxyacetophenone,0.001 to 0.02 part of tocopherol, 0.01 to 0.05 part of astaxanthin, 0.01 to 0.1 part of a ginger root extract, 0.001 to 0.01 part of acetyl hexapeptide-8, 0.05 to 0.5 parts of hydrolyzed collagen, 0.1to 1.0 part of carnosine, 0.01 to 0.16 part of compound ceramide and 0.11 to 1.33 parts of a thickening agent, 5 to 31 parts of humectant, 0.13 to 1.2 parts of a skin conditioner, 0.93 to 8.5 parts of an emollient and 62 to 95 parts of water. The compound ceramide is selected from one or more of ceramide 3, ceramide 6II, ceramide 1 and ceramide 2. The preparation method is safe and convenient tooperate, the skin aging can be delayed, the collagen generation is promoted, the filling degree of the skin is improved, the moisture content of the stratum corneum is increased, and the essence composition has a good anti-aging effect.

The invention provides an antioxidant corrosion inhibitor composition and a lubricating oil composition containing the antioxidant corrosion inhibitor composition; and the antioxidant corrosion inhibitor composition comprises aromatic amine antioxidant, thiadiazole derivative and organic molybdenum additive, wherein the organic molybdenum additive is prepared by the reaction of fatty acid amide, polyisobutylene succinimide and inorganic molybdenum compound under the condition that unnecessary dilute oil exists. The antioxidant corrosion inhibitor composition and the lubricating oil composition have excellent antioxidant performance, corrosion resistance, wear resistance and antifriction performance.

The invention provides neodymium-iron-boron magnet powder. A neodymium-rich phase in the powder granules generates neodymium hydride in a hydrogen absorption smashing stage; then in the subsequent air flow powder grinding stage, the powder granules obtain quite high resistance to oxidation, and a neodymium-iron-boron magnet with low rare earth content, low cost and high performance can be prepared more easily; the neodymium-iron-boron granules comprising the hydride are high in brittleness, and the air flow powder grinding efficiency is improved by 50% or even 100% compared with that of the conventional process; the prepared powder granule dimensions can be reduced to be smaller than 3[mu]m, which is a quite significant condition for preparing a sintered neodymium-iron-boron magnet with high coercivity and high thermal stability; the powder granules are subjected to dehydrogenation, so that the orientation degree of the powder granules in an orientation pressing process is improved, residual magnetism of the magnet is improved, generation of internal cracks of the magnet can be effectively suppressed, and the mechanical performance of the sintered neodymium-iron-boron magnet is improved; and by effectively combining the dehydrogenation process with a fine powder mixing process, the process is simplified, the powder production efficiency is improved and the cost is lowered.

The invention discloses a sunscreen skin care product and a preparation method thereof and relates to field of skin care products. The sunscreen skin care product is mainly prepared from, by weight, 4.7-45 parts of an oil phase composition, 46.53-106.1 parts of a water phase component, 0.05-0.2 part of tetrahydroxypropyl ethylenediamine, 1-5 parts of oat beta-glucan and 0.005-0.02 part of oligopeptide-1, and 46.53-106.1 parts of water phase component comprises, by weight, 1-15 parts of a sophora japonica extract and 1-8 parts of an aloe extract. By the arrangement, problems about singular ultraviolet absorption wavelength of the sunscreen skin care product and safety in reusing the sunscreen skin care product are solved; the sunscreen skin care product has broad spectrum absorption on UVA/UVB (ultraviolet A/ultraviolet B) and is high in absorption action and oxidation resistance, free radicals can be removed, damage of ultraviolet to the skin is reduced, and functions of after-sun repairing and moisturizing are achieved.

The invention discloses a novel environmental-friendly anti-mold flame-retardant polyvinyl chloride protection layer material which is characterized by being prepared from the following raw materials in parts by weight: 100 parts of PVC resin, 2-8 parts of a plasticizer a, 30-55 parts of a plasticizer b, 5-10 parts of a flame retardant a, 5-10 parts of a flame retardant b, 10-40 parts of packing a, 20-30 parts of packing b, 2-10 parts of a thermal stabilizer, 0.5-2 parts of a lubricant, 1-3 parts of a processing modifier, 0.2-0.4 part of an anti-mold agent and 5-10 parts of a toughening agent, wherein the anti-mold agent is an antibacterial anti-mold agent which is compounded from an inorganic porous mineral material loaded with inorganic antibacterial factors and organic anti-mold factors. Compared with a common PVC flame-retardant protection layer material, the novel environmental-friendly anti-mold flame-retardant polyvinyl chloride protection layer material disclosed by the invention is very good in anti-mold property, and the service life of the protection layer material is greatly prolonged.

The invention relates to the technical fields of synthesis and modification of polymers and specifically relates to preparation methods of bisphenol A modified phenolic resin and a modified phenolic resin molding material. The preparation method of the bisphenol A modified phenolic resin comprises the following steps: 1) adding phenol and acid into a reactor, and carrying out stirring to obtain areaction solution; 2) dropwise adding formaldehyde into the reaction solution obtained in step 1) step by step to obtain a reaction solution; 3) adding bisphenol A into the reaction solution obtainedin step 2) step by step to obtain a reaction solution; 4) adding melamine into the reaction solution obtained in step 3) step by step, and carrying out a reaction for 1-3 h; and 5) carrying out reduced-pressure dehydration to obtain the modified phenolic resin. The preparation methods have the beneficial effects that according to the preparation method provided by the invention, the phenolic resinis modified by adopting the bisphenol A and the melamine, the bisphenol A and the melamine are added within a specific time interval, so that the prepared phenolic resin and the phenolic resin molding material have good oxidation resistance, and a phenolic molding plastic product with a light-color appearance can be prepared by adopting the modified phenolic resin.

The invention discloses a nanometer crystal cellulose composite antioxidant nano-filtration membrane and a method for preparing the same. The method includes carrying out interfacial polymerization on porous support membranes by the aid of water-phase monomers and oil-phase monomers; forming a nanometer crystal cellulose composite aromatic polymer functional skin layer on each porous support membrane to obtain the nanometer crystal cellulose composite antioxidant nano-filtration membrane. The nanometer crystal cellulose composite antioxidant nano-filtration membrane and the method have the advantages that nanometer crystal celluloses are compounded in the aromatic polymer functional skin layers of the nanometer crystal cellulose composite antioxidant nano-filtration membrane, the surfaces of the nanometer crystal celluloses contain a large quantity of hydroxyl, and accordingly the water flux of the nanometer crystal cellulose composite antioxidant nano-filtration membrane can be greatly improved; ester bonds can be formed by the hydroxyl of the surfaces of the nanometer crystal celluloses in interfacial polymerization procedures and can stably exist in sodium hypochlorite, and accordingly the nanometer crystal cellulose composite antioxidant nano-filtration membrane is difficult to oxidize in acid pickling procedures and is excellent in antioxidant activity; procedures for preparing the nanometer crystal cellulose composite antioxidant nano-filtration membrane are easy to implement, reaction conditions are mild, and accordingly the nanometer crystal cellulose composite antioxidant nano-filtration membrane and the method have excellent industrial production bases and broad application prospects.