254 results about "Phthalate" patented technology

The invention discloses a quick-curing polyurethane seamless expansion joint material for roads and a preparation method, and belongs to the technical field of road engineering materials. The material is prepared from polyether polyol, polycaprolactone glycol, a bisphenol A epoxy-polyether block isocyanate terminated prepolymer, a methyl phenyl silicon-boron hybrid hydroxyl chain extender, diphenylmethane diisocyanate, calcium carbonate, wollastonite, a hindered amine anti-aging agent and dioctyl phthalate. Wherein the bisphenol A epoxy-polyether block isocyanate terminated prepolymer is prepared by the following steps: reacting bisphenol A with epoxy chloropropane to generate epoxy resin, reacting with polytetramethylene ether glycol, and introducing isophorone diisocyanate; the methyl phenyl silicon-boron hybrid hydroxyl chain extender is prepared by carrying out hydrosilylation and ethylene glycol reaction on methyl trimethoxy silane, 3-glycidyl ether oxypropyl trimethoxy silane and allylboronic acid pinacol ester; and the methyl phenyl silicon-boron hybrid hydroxyl chain extender is prepared by carrying out hydrosilylation on methyl trimethoxy silane, 3-glycidyl ether oxypropyl trimethoxy silane and allylboronic acid pinacol ester. The material has the advantages of quick curing property, weather resistance and high-temperature stability, and is suitable for road seamless expansion joint scenes.

The invention relates to the technical field of shield tunnel construction, and discloses a shield tunnel segment joint waterproof material and a waterproof structure, the shield tunnel segment joint waterproof material comprises a component A and a component B; the component A comprises the following component: 30-40 parts of liquid polysulfide rubber; 5 to 10 parts of a fluorinated polyurethane prepolymer; 1-5 parts of a silane coupling agent; 3-5 parts of fumed silica; 8-15 parts of hollow glass beads; 10 to 15 parts of nano calcium carbonate; 0.5 to 2 parts of polytetrafluoroethylene micro powder; 0.1 to 1 part of ettringite; the component B comprises the following component: 1-5 parts of manganese dioxide; and 5 to 10 parts of dioctyl phthalate. By utilizing the characteristics that the sealing gasket has excellent fluidity during injection and can be automatically cured into a high elastomer within a set time, a pre-installed sealing gasket can be replaced by adopting an innovative injection process, and the construction difficulty faced by high-precision shield segment assembly in a high-water-pressure environment is effectively solved.

The present disclosure relates to a flexible multi-layered material. An embodiment consistent with the disclosure has a plurality of poly(vinyl chloride)—PVC—layers, wherein at least one of the plurality of PVC layers is a foam layer, wherein each of the layers of the plurality of PVC layers comprises up to 60% (w / w) of a phthalate-free plasticizer, and wherein the phthalate-free plasticizer is selected from the group consisting of: phosphate, trimellitate, adipate, citrate, sebacate, polyester, vegetable oil, and mixtures thereof, and wherein the solubility of the phthalate-free plasticizer in the PVC is at least 13 (J·cm−3)1 / 2.

The invention discloses an anti-aging light-conversion silver black mulching film and a preparation method thereof, and belongs to the technical field of agricultural polymer films. The preparation method comprises the following steps: S1, mixing low-density polyethylene powder, aluminum paste, a complex light conversion agent, dioctyl phthalate and EVA (Ethylene Vinyl Acetate) to prepare silver light conversion master batches; s2, vinyl-terminated fluorosilicone oil, tert-butyl peroxybenzoate and linear low-density polyethylene powder are stirred for a reaction, and modified low-density polyethylene is obtained; the modified low-density polyethylene, maleic anhydride grafted polyethylene, a multi-effect light stabilizer and polyethylene wax are subjected to banburying granulation, and modified light-stable master batches are obtained; s3, carrying out banburying granulation on the low-density polyethylene powder, the polyethylene powder, carbon black, zinc stearate, ethylene bis-stearamide and the EVA powder to obtain black master batches; s4, blending the silver layer and the black layer, and performing double-layer co-extrusion to obtain the light-conversion silver-black mulching film. The light-conversion silver black mulching film provided by the invention has good mechanical properties and aging resistance.

The application discloses a method for inhibiting the migration of toxic small molecules in plastics based on a protein-based phase transition composite coating, which is characterized by the following steps: inducing the rapid phase transition of proteins on the surface of plastics by a disulfide bond reducing agent to form a nanofilm, and adsorbing polysaccharides on the surface of the nanofilm to form a protein-based phase transition composite coating on the surface of the plastics, which can inhibit the migration of toxic small molecules in the plastics. The preparation method of the protein-based phase transition composite coating is simple, the cost is low, the inhibition effect on the migration of phthalate plasticizers and bisphenol A in plastics (such as PVC, PP, PE, PS and PET) is good, the adsorption of drugs on the surface of medical plastics can be prevented at the same time, the protein-based phase transition composite coating has good biocompatibility, is suitable for temperature-sensitive plastics, has universality, can be safely used on the surface of food and medical plastic products, and has a good popularization and application prospect on the surface of plastics.

The invention discloses an antibacterial coating which comprises a component A and a component B. The component A comprises the following raw materials in parts by weight: 40-60 parts of epoxy resin, 15-35 parts of polyamide resin, 5-10 parts of tea tree essential oil, 1-3 parts of di (2-ethylhexyl) phthalate, 1-2 parts of fumed silica, 1-2 parts of acrylate, 1-2 parts of sodium phosphate and 1-2 parts of polyvinyl ether. The component B comprises the following raw materials in parts by weight: 20-30 parts of modified nano zinc oxide, 40-60 parts of an antibacterial curing agent, 15-20 parts of butanol and 2-10 parts of acetone. The weight ratio of the component A to the component B is 8: (2-4), and the water-resistant coating is excellent in mechanical property, high in adhesive force and good in water resistance.

The invention relates to high-molecular-weight polydiethylene glycol phthalate, a preparation method thereof and low-warping hydrolysis-resistant glass fiber reinforced PBT (polybutylene terephthalate) in the field of resin. The high-molecular-weight polydiethylene glycol phthalate has a structure as shown in a formula (I), and the low-warping hydrolysis-resistant glass fiber reinforced PBT is prepared from the following components: PBT, high-molecular-weight polydiethylene glycol phthalate, an inorganic filler and glass fibers. By adding the high-molecular-weight polydiethylene glycol phthalate, the tensile strength and bending strength of a PBT and high-molecular-weight polydiethylene glycol phthalate blending system can be improved, the notch impact strength of the system can be improved to a certain extent, the molding shrinkage rate of the blending system is reduced, and the PBT / high-molecular-weight polydiethylene glycol phthalate blending system has hydrolysis resistance and can be used for preparing the PBT / high-molecular-weight polydiethylene glycol phthalate composite material. And the effect is obvious.

This invention proposes a catalyst component, catalyst, and their applications for olefin polymerization, belonging to the field of olefin polymerization technology. The catalyst component contains products obtained from the reaction of a magnesium source, a titanium source, and an internal electron donor, wherein the internal electron donor comprises furan compounds and diether compounds. The catalyst of this invention exhibits high hydrogen sensitivity and stereoregulation, with a good balance between the two. The molecular weight distribution of the prepared low melt index polymer is broader than that of the high melt index polymer, and the catalyst component of this invention does not contain phthalate compounds (plasticizers).

The invention relates to the field of formula and method application of reinforcing slurry in tunnel excavation, in particular to a grouting material for soft and broken surrounding rock, a preparation method of the grouting material and pre-simulation equipment. The problems that an existing inorganic grouting material is long in setting time and prone to solidifying a cutterhead, and an organic grouting material is poor in setting time controllability, high in manufacturing cost and the like are solved. The coating provided by the invention is obtained by mixing a component A and a component B according to a volume ratio of 1: 0.78. The component A comprises water glass and a catalyst; and the component B is prepared from polymethylene polyphenyl polyisocyanate (PAPI), polyether polyol (DL-2000D) and octyl phthalate (DOP). The invention has the advantages of short gelling and curing time, strong cementing property, high compressive strength and better fluidity; the inorganic water glass is mixed with the organic polyurethane, and after reaction, the material is pollution-free, safe and environment-friendly; the requirements of weak surrounding rock on the reinforced grouting material in tunnel engineering can be met.

Belonging to the technical field of oil-gas field development, the invention provides a core-shell temporary plugging agent, which mainly comprises a shell capable of acidolysis of bio-based cellulose and a spherical core wrapped by the shell and capable of pyrolysis of a polymer. The molding material of the shell is hydroxypropyl methyl cellulose phthalate and sodium lignin sulfonate; the molding material of the spherical core body is a copolymer of N-isopropylacrylamide, acrylamide and sodium p-styrenesulfonate, and the temporary plugging agent has good dissolvability / degradability, has no requirements on the dissolved / degraded water quality environment, has strong adaptability to the environment and stability, and can be used as a temporary plugging agent. Accurate plugging and controllable plugging removal of a high-permeability layer of a heterogeneous oil reservoir are achieved through a double-response cooperation mechanism of'pH triggering shell layer disintegration (the threshold value is 2.5-3.5) and temperature driving core expansion (the threshold value is 60-120 DEG C) ', and the high-permeability plugging agent is suitable for fracture acidizing temporary plugging of common low-temperature oil and gas wells and can effectively meet the technical requirements of fracture acidizing temporary plugging of high-temperature deep wells. And excellent flexibility and reliability are achieved during operation, and the application prospect is good.

A rapid disintegration type enteric gelatin hollow capsule shell belongs to the technical field of hollow capsule production, and comprises the following components by mass: 70%-90% of gelatin, 0.01%-5.0% of a humectant, 0.01%-10% of a surfactant, 0.01%-10% of a plasticizer, 0-5% of a disintegrating agent, 0.1%-10% of an opacifying agent, and 1.0%-20% of a coating material. The method comprises the following steps: synchronously forming a glue solution and a coating, alternately dipping in glue, and drying at low temperature; the preparation method has the beneficial effects that a disintegration acceleration mechanism is adopted, the disintegrating agent quickly absorbs water and expands in intestinal juice, and the permeability of the capsule shell is enhanced by cooperating with the surfactant; the proportion of a coating material is optimized, and hydroxypropyl methylcellulose phthalate is greater than or equal to 15%, so that the intestinal juice response speed is increased; and the disintegration time in intestinal juice is about 8 minutes, which is increased by about 50% compared with the disintegration time of about 15 minutes of the traditional capsule.

The invention discloses an internal electron donor for olefin polymerization, a catalyst component, a catalyst and application of the internal electron donor, the internal electron donor for olefin polymerization has a structure as shown in a formula I. In the formula I, R1 and R2 are the same or different and are independently selected from C1-C20 alkyl containing or not containing heteroatoms, and R1 and R2 are independently selected from C1-C20 alkyl containing or not containing heteroatoms. The heteroatom is one or a combination of more than two heteroatoms selected from H, N, O, S, P, Si and halogen; x is CH or N. The internal electron donor adopts a non-plasticizer internal electron donor, the prepared catalyst has high catalytic activity which is generally higher than that of common phthalate and diether internal electron donor catalysts in industry, and the polymer obtained by catalytic polymerization has the advantages of regular particle size, high bulk density, high isotacticity, small temperature fluctuation in a kettle during polymerization, and good stability. The reaction is stable and industrial production is facilitated.

The application belongs to the technical field of ink, and discloses a UV touch ink and a preparation method thereof.The UV touch ink comprises a UV modified acrylate, an acetylacetate ethyl ester-containing acrylic resin, an active monomer, an organic wax, a photoinitiator and a solvent; the active monomer is selected from at least one of dipropylene glycol diacrylate, diethylene glycol phthalate diacrylate, neopentyl glycol diacrylate and hexanediol diacrylate. The UV modified acrylate, the acetylacetate ethyl ester-containing acrylic resin, the active monomer and the organic wax are used as main components, and the selection of the active monomer enables the prepared UV touch ink to have excellent skin feeling and velvet feeling effects, and excellent adhesion, light resistance, weather resistance, alcohol resistance and solvent resistance. Meanwhile, the UV touch ink can simplify the curing process, and only needs to be dried by UV after printing, has high curing efficiency, and does not need to be dried by hot air and UV.

The invention relates to the technical field of building waterproof materials, in particular to a rubber waterstop for a deformation joint of a combined concrete floor. The rubber waterstop sequentially comprises a composite rubber plate, a self-adhesive rubber sheet and an elastic supporting strip from top to bottom. The composite rubber plate is composed of a modified rubber plate and a glass fabric reinforcing layer arranged on the top of the modified rubber plate. The modified rubber plate is prepared by the following method: putting 90-110 parts by weight of a rubber base material, 4-6 parts by weight of nano zinc oxide, 1-1.5 parts by weight of stearic acid, 2-3 parts by weight of an anti-aging agent, 8-12 parts by weight of a functional aid, 20-30 parts by weight of dioctyl phthalate, 15-30 parts by weight of carbon black, 20-40 parts by weight of kaolin and 1-2 parts by weight of an accelerant into an internal mixer for mixing; performing extrusion molding on the rubber compound by adopting an extruder or a calender, and then performing cutting treatment, thereby obtaining the product. The rubber waterstop provided by the invention not only has excellent waterproof and dynamic sealing effects, but also has excellent mechanical properties and aging resistance; meanwhile, installation is flexible and efficient, and construction and later maintenance cost is reduced.

The application discloses an Aeromonas media strain capable of degrading PAEs and an application thereof, and belongs to the technical field of microorganisms. The strain is Aeromonas media HJ02, and the preservation number is GDMCC NO: 66828. The strain has obvious advantages in environmental adaptability and PAEs pollutant degradation activity, can efficiently degrade various PAEs and intermediate metabolites, and maintains good growth kinetic characteristics in a 0-120 h culture period. When the initial concentration of diisooctyl phthalate (DEHP) is 300 mg / L, the strain can significantly reduce the residual content of DEHP in the culture system after culture, and the 24 h degradation rate reaches 91.73 %. The application has the advantages of simple operation, safety and economy, provides efficient and stable microbial resources for PAEs pollution remediation, and has important practical value.

The invention discloses a novel steel-plastic composite protective net plastic formula for a coal mine and a manufacturing process. The novel steel-plastic composite protective net plastic formula comprises PVC three-type resin, PVC elastomer, ground calcium carbonate, paraffin, dioctyl phthalate, aluminum hydroxide, magnesium hydroxide, nano calcium carbonate, halogen flame-retardant master batch, fatty acid barium, DOTP, nitrile rubber, antimony oxide, acrylate, CPEB, silicone rubber, stearic acid, PE wax, phthalocyanine blue and high-melting-point wax. According to the formula design, PVC resin and an elastomer are compounded, and the synergistic enhancement effect of heavy calcium carbonate and nano calcium carbonate is combined, so that a rigid-flexible matrix structure is formed; multiple flame-retardant and smoke-suppressing properties are realized; a flame-retardant system is synergistic; the endothermic decomposition effect of aluminum hydroxide and magnesium hydroxide is combined with a gas-phase flame-retardant mechanism of halogen flame-retardant master batch and antimony oxide;

This invention relates to a polyurethane-modified silicone protective material for the outer wall of wind turbine towers, and discloses a method for preparing the same material. The material is prepared by mixing acrylate-hedged phenol-modified trimethyl silicone oil, isocyanate-modified polyether polyol polyurethane, ultrafine silica, nano-alumina, short-fiber glass, triethylamine, benzoyl peroxide, dioctyl phthalate (DOP), phthalocyanine UV absorbers, dibutyltin diethylene (DDBT), and imidazole antifungal agents in a specific weight ratio. This material exhibits excellent weather resistance, mechanical strength, heat resistance, UV resistance, and antifungal properties, making it particularly suitable for the protection of wind turbine towers. The preparation method ensures the stability and consistency of the material's performance by precisely controlling the proportions of each component and the curing conditions. This material effectively improves the UV resistance, corrosion resistance, weather resistance, and overall durability of wind turbine towers, extending their service life and reducing maintenance costs. This invention provides a high-performance protective material for the outer wall of wind turbine towers, which has significant engineering application value. Especially in environments with long-term high humidity, low temperature, and strong ultraviolet radiation, it can significantly improve the stability and service life of the tower. This polyurethane-modified silicone protective material exhibits excellent protective performance in demanding application environments such as wind turbine towers, and has broad market application prospects.

The invention discloses a flame-retardant fireproof hose and a preparation method thereof, and relates to the technical field of flame-retardant fireproof materials. The invention discloses a flame-retardant fireproof hose. The flame-retardant rubber material is prepared from the following raw materials in parts by weight: 60 to 80 parts of ethylene propylene diene monomer, 20 to 30 parts of chlorinated polyethylene, 5 to 12 parts of dioctyl phthalate, 1 to 3 parts of stearic acid, 40 to 60 parts of modified magnesium hydroxide, 5 to 10 parts of antimony trioxide, 2 to 5 parts of nano silicon dioxide, 8 to 15 parts of decabromodiphenyl ether, 3 to 8 parts of carbon black, 15 to 25 parts of modified glass fiber and 1.5 to 3 parts of dicumyl peroxide. And sufficient polyvinyl chloride flame-retardant coating is provided. The flame-retardant fireproof hose is scientific in raw material ratio, the ethylene propylene diene monomer and the chlorinated polyethylene synergistically improve the toughness of a matrix, and the modified magnesium hydroxide and the modified glass fibers enhance the flame retardance and mechanical properties; the preparation process is rigorous, uniform dispersion of the filler is ensured through multi-step modification, and vulcanization and spraying parameters are accurate and controllable; the product is excellent in flame retardance, high in process reproducibility, suitable for large-scale production and capable of meeting the fireproof requirements of various scenes.

This application provides a flame-retardant and toughened cable material, prepared from the following components in parts by weight: 85-100 parts PVC resin, 15-20 parts dioctyl phthalate, 10-15 parts chlorinated paraffin, 10-15 parts dioctyl terephthalate, 40-50 parts heavy calcium carbonate, 5 parts stabilizer, 2-3 parts PE wax, 1-2 parts stearic acid, and 20-30 parts flame-retardant particles. The flame-retardant particles are composite microspheres formed by loading flame retardants onto nano-silica aerogel and grafting POSS onto its surface. Nano-silica aerogel has a higher temperature resistance limit, and its unique three-dimensional porous network structure can absorb heat and restrict oxygen diffusion. It can also load flame retardants, resulting in a more uniform distribution of the flame retardant. POSS acts as a bridge between the nano-silica aerogel and PVC resin, improving the compatibility and bonding strength between the flame-retardant particles and PVC resin, reducing stress concentration, and improving toughness, thus achieving simultaneous improvement in flame retardancy and toughness.

The invention provides a high-temperature-resistant water shutoff agent as well as preparation and application thereof. The water shutoff agent is prepared from the following components in parts by weight: 100 to 110 parts of sodium lauryl alcohol phthalate, 45 to 55 parts of polyoxyethylene sorbitan monooleate, 60 to 70 parts of lignin surfactant, 65 to 75 parts of alpha-olefin sulfonate and 330 to 380 parts of oleic acid. The preparation process of the water shutoff agent comprises the following steps: adding the sodium lauryl alcohol ester phthalate and the polyoxyethylene sorbitan monooleate into a reaction kettle, and uniformly stirring to obtain a first reaction solution; adding a lignin surfactant and alpha-olefin sulfonate into the first reaction solution at one time, and uniformly stirring to obtain a third reaction solution; equally dividing oleic acid into two groups, adding one group of oleic acid into the third reaction solution, and uniformly stirring to obtain a fourth reaction solution; and adding another group of oleic acid into the fourth reaction liquid, uniformly stirring, and standing to obtain the water shutoff agent. The problems that a water plugging agent is poor in plugging effect in a high-temperature oil reservoir and low in crude oil recovery rate can be solved.

The application discloses an environmentally-friendly soft type yoga mat special silk-screen printing ink and a preparation method thereof, and belongs to the technical field of silk-screen printing inks. The ink comprises the following components in parts by weight: 30-50 parts of main body resin, 5-15 parts of environmentally-friendly pigment, 25-45 parts of environmentally-friendly composite solvent, 1-5 parts of adhesion promoter, 0.5-2 parts of rheological additive, 0.5-2 parts of scratch-resistant additive, and 2-8 parts of environmentally-friendly non-ortho phenyl plasticizer. The ink is extremely environmentally-friendly, meets international export standards, and is free of phthalate plasticizers, benzophenone solvents and heavy metal pigments in the whole process. Instead, the ink uses citric acid ester non-ortho phenyl plasticizers, benzene-free and ketone-free composite solvents and heavy metal-free organic pigments. The VOC content is far lower than the national limit value, the irritating odor is eliminated, and phthalate controlled substances are not detected. The ink meets the EU REACH regulation appendix XVII 51 / 52 and the EN71-3 toy safety standard, and completely solves the problem of limited export of traditional inks.

The invention discloses a duloxetine enteric-coated pellet, a compound preparation and a preparation method. The duloxetine enteric-coated pellet contains a drug-containing pellet and an enteric-coated layer, the enteric-coated layer contains hydroxypropyl methylcellulose phthalate (HPMCP), and the mass ratio of the HPMCP to the enteric-coated layer is 55.6%-90.9%; the HPMCP can be dissolved in a medium of which the pH value is more than 5.5; the weight gain of the enteric-coated layer is more than 12%. According to the duloxetine enteric-coated pellet disclosed by the invention, HPMCP is selected as an enteric-coated material for resisting ethanol dumping by optimizing the type of the material for resisting ethanol dumping and the thickness of the enteric-coated layer, so that the duloxetine enteric-coated pellet has an ethanol dumping resisting effect and an ideal dissolution speed.

Provided is a polyol composition which has excellent storage stability and with which it is possible to obtain a cured object in which an excessive increase in elastic modulus at low temperatures can be suppressed while having a high elastic modulus at room temperature. Also provided is a two-component curable polyurethane resin composition.　A polyol composition according to an embodiment is a composition to be reacted with a polyisocyanate to obtain a polyurethane resin, and contains a polybutadiene polyol, a trifunctional polyether polyol, an ether-ester plasticizer, and a phthalate ester plasticizer.

The present invention relates to a solid dispersion comprising enzalutamide or its pharmaceutically acceptable salts, hydroxypropyl methylcellulose phthalate (HPMCP), soluplus® (polyvinyl caprolactam-polyvinyl acetate-polyethylene glycol), surfactant, and optionally at least one pharmaceutically acceptable excipient. The present invention also relates to a pharmaceutical composition comprising the solid dispersion of enzalutamide and its use for treating prostate cancer. The present invention further relates to a process for preparation of the solid dispersion of enzalutamide and the pharmaceutical composition comprising the solid dispersion of enzalutamide.

The invention discloses a production method of a PA / PE high-barrier composite film bag. The composite film bag comprises an outer layer, a middle layer and an inner layer, the outer layer is prepared from PA6, glass fibers, maleic anhydride grafted polyethylene, an antioxidant, a slipping agent, an ultraviolet light absorber, titanium dioxide, nano silicon dioxide and polyimide; the middle layer is prepared from EVOH (Ethylene Vinyl Alcohol), polyamide-imide, nano montmorillonite, maleic anhydride grafted polypropylene, an antioxidant, a slipping agent, terpene resin, polyvinylidene chloride and polybutylene terephthalate; the inner layer is prepared from HDPE, LLDPE, mPE, an antistatic agent, silicon dioxide, dioctyl phthalate, an antibacterial agent and polylactic acid. The composite film bag prepared by the invention not only has high barrier property and good strength, but also has various functions.

The invention belongs to the technical field of surface modification of boron powder, and particularly relates to a process for excessively adding boron powder into an energetic material. The process comprises the following steps: modifying a boron powder raw material by using a phthalic ester coupling agent as a modifier to obtain modified boron powder; the preparation method comprises the following steps: adding stearic acid into an energetic material, heating and mixing, and then adding a surfactant to obtain a mixed solution; and adding the modified boron powder into the mixed solution in batches, and stirring and dispersing until no particles or sedimentation is generated. After the boron powder is modified by the titanate coupling agent, the viscosity of the obtained modified boron powder system is remarkably reduced, and the modified boron powder system has good lubricity and rheological property. When the boron powder is used in an energetic material, the addition amount of the boron powder can be remarkably increased by adding the surfactant into the energetic material such as hydrocarbon fuel. The energy level of the liquid energetic material is improved by adding the modified boron with high energy density, and the maximum addition amount of the boron powder in aviation kerosene can reach 78.6% due to excessive addition of the boron powder in aviation kerosene.

The invention relates to the technical field of covalent organic framework materials, in particular to a covalent organic framework material for extracting phthalic acid esters in grease and a preparation method and application thereof.The covalent organic framework material is a COF-F-SPME probe, and the preparation method of the covalent organic framework material comprises the following steps that an eroded stainless steel wire is soaked in an acetonitrile solution containing TAPP and TFTA, the temperature of the acetonitrile solution is controlled to be 30-60 DEG C, and the temperature of the acetonitrile solution is controlled to be 30-60 DEG C; and carrying out in-situ growth for 72 hours, washing and drying to obtain the COF-F-SPME probe. The COF-F-SPME probe prepared by the invention can simultaneously realize efficient extraction of various phthalates, has relatively strong matrix anti-interference capability and excellent enrichment and purification performance, and has the advantages of simple preparation method, relatively low cost and wide application prospect.

The invention relates to the technical field of water-based paint, in particular to water-based white protective paint special for a POF heat shrinkage film and a preparation method and application of the water-based white protective paint. The special water-based white protective paint for the POF heat shrink film is prepared from the following raw materials in parts by weight: 50 to 60 parts of functional emulsion, 15 to 25 parts of white slurry, 5 to 10 parts of functional additive and 10 to 15 parts of water, the functional emulsion is a stain-resistant matte emulsion; and the plasticizer is a phthalate compound. The special water-based white surface protective paint for the POF heat shrink film adopts the stain-resistant matte emulsion as a functional emulsion, the stain-resistant matte emulsion, the white slurry, the functional additive and the water are in a specific dosage ratio, and all the raw materials have a synergistic effect, so that migration of a plasticizer in the POF heat shrink film can be inhibited, and the situation that furniture packaged by the POF heat shrink film is not prone to cracking after being subjected to high temperature and high pressure is avoided. And bright marks can appear.

The invention relates to a method for extracting a phthalate plasticizer from milk powder, and belongs to the technical field of detection of plasticizers. In order to solve the problem that an existing detection method cannot accurately extract a phthalate plasticizer in milk powder, the invention provides a method for extracting a phthalate plasticizer from milk powder, the milk powder is completely dissolved to obtain an emulsion sample, an organic solvent with the volume being 2 times that of the emulsion sample is added into the emulsion sample, and the emulsion sample is subjected to ultrasonic extraction; and carrying out vortex and ultrasonic treatment, standing for layering, taking an upper layer organic phase, and carrying out nitrogen blowing until the upper layer organic phase is nearly dry, so as to obtain the phthalate plasticizer component. According to the method, ethyl acetate and acetonitrile are mixed to serve as the organic solvent, the phthalate plasticizer in the milk powder can be effectively dissolved, the extraction method is accurate, reliable, simple, convenient, rapid and low in cost, the problem that the plasticizer in the milk powder is extremely easy to emulsify during extraction is solved, and the phenomena that the plasticizer is not fully extracted and the detection result is low are improved. The detection result of the extracted sample is accurate, and the recovery rate is high.

The invention provides environment-friendly PVC (polyvinyl chloride) glue-permeating plastic-uptake artificial leather and a preparation process thereof, and relates to the technical field of artificial leather preparation, the preparation process comprises the following steps: preparing and blending raw materials, matching 100 parts of polyvinyl chloride resin with 40-60 parts of dioctyl phthalate, adding 2-3 parts of calcium-zinc composite stabilizer into the raw materials, uniformly mixing, and extruding to obtain the environment-friendly PVC glue-permeating plastic-uptake artificial leather. The raw materials are fully mixed and stirred in the mixing assembly; the base cloth is mounted on the unwinding frame and is fed into the hot water tank to desize and boil oil stains and impurities on the surface of the base cloth; base cloth is installed on the unwinding frame, sequentially penetrates through the hot water tank, the cleaning assembly, the first drying box, the cloth scraping table and the second drying box and finally is wound on the winding frame, cleaning of the base cloth is completed in the hot water tank and the cleaning assembly, the cleaned base cloth is dried in the first drying box, cloth scraping is completed on the cloth scraping table, and then the cloth is dried in the second drying box. The raw materials are solidified on the surface of the base cloth through the second drying box, and finally the base cloth is wound on the winding frame.