198 results about "Glycidol" patented technology

The invention belongs to the field of chemical engineering, and relates to a process device and method for continuously synthesizing glycidyl (3-chloro-1, 2-propylene glycol and sodium hydroxide (hereinafter referred to as NaOH) as raw materials). The device comprises a raw material feeding pump, a heat exchanger, a micro-reactor, a delay tube reactor 1, a neutralization micro-reactor and a delay tube reactor 2 which are sequentially in fluid communication through pipelines, the heat exchangers are divided into two groups, one group is used for heat exchange of 3-chloro-1, 2-propylene glycol solution, and the other group is used for heat exchange of alkaline solution. According to the method, a 3-chloro-1, 2-propylene glycol solution and a sodium hydroxide solution (NaOH) are adopted as raw materials, glycidol is continuously prepared through a microchannel reactor, on the basis, an acid-base neutralization reaction can be carried out in situ according to needs to remove redundant alkali, redundant heat generated by the acid-base neutralization reaction is absorbed through a low-temperature material, and energy consumption is reduced; the product is analyzed by gas chromatography, and the generated glycidol does not have hydrolysates or auto-polymerization products, so that the product selectivity is higher.

Challenges are to provide an epoxy resin composition for RTM which achieves both viscosity stability at the time of injection and stiffness at the time of demolding, and a cured resin of which is superior in balance among elastic modulus under wet and heat conditions, heat resistance under wet conditions, and fracture toughness, and to provide a large fiber-reinforced composite material having a high Vf and including the epoxy resin composition. Provided is an epoxy resin composition for RTM including an epoxy resin and a curing agent component, containing the following components [A] and [C] as the epoxy resin, containing the component [B] as the curing agent component, and containing 50 to 85 parts by mass of the component [A] in 100 parts by mass of the epoxy resin, [A] Tetrafunctional glycidyl amine type epoxy resin [B] a curing agent that is liquid at 150°C [C] Aniline type epoxy resin represented by Formula (I): (In Formula (I), R1 and R2 each represent at least one selected from the group consisting of aliphatic hydrocarbon groups having a carbon number of 1 to 4; n is an integer of 0 to 4; and m is an integer of 0 to 5; when n or m is 2 or more, R1 and R2 each may be the same or different at each occurrence; X represents -O- or -S-).

The invention relates to the technical field of electrolyte, in particular to a thioether cross-linked solid polymer electrolyte membrane as well as a preparation method and application thereof. The preparation method comprises the following steps: taking N, N-dimethylformamide, respectively adding 3, 6-dioxa-1, 8-octane dithiol and triglycidyl isocyanurate, and uniformly stirring to obtain a mixed solution; adding bis (trifluoromethylsulfonyl) imide lithium into the mixed solution, putting magnetons on a magnetic stirrer, and completely dissolving the magnetons to obtain a precursor solution; and pouring a proper amount of the precursor solution into a polytetrafluoroethylene mold, spreading, and carrying out cross-linking polymerization in a blast oven to form the film. The three-dimensional thioether cross-linked network structure has a large number of weakly coordinated thioether groups, dissociation of lithium salt can be promoted, a large number of free Li < + > is generated, the number of Li < + > is increased, meanwhile, the crystallinity of a polymer is remarkably reduced, the ionic conductivity is improved, the mechanical stability of a film can be improved, and the service life of a battery is effectively prolonged.

The invention discloses a single-chain alkylamino glycerol compound, a preparation method and application. The structural general formula of the single-chain alkylamino glycerol compound is R-NH-CH2-CHOH-CH2OH, the single-chain alkylamino glycerol compound is used for preventing and controlling peach monilinia and / or botryosphaeria dothidea, and R is a C8-C18 straight chain or branched chain and saturated or unsaturated alkyl. The single-chain alkylamino glycerol compound provided by the invention can be prepared by reacting glycidol and alkylamine under mild conditions, has a remarkable inhibition effect on peach monilinia and botryosphaeria dothidea, and can induce fungal membrane rupture, anti-oxidation system imbalance and lipid peroxidation, so that fungus killing is realized. The device can be widely used for fruit and vegetable postharvest preservation, orchard spraying and green pesticide development.

The invention discloses a coumarin-based bio-based epoxy resin monomer and a preparation method and application thereof, and the structure of the monomer is DPE, DCE and DHE. The monomer takes dihydrocoumarin and biomass amine compounds (including putrescine, cadaverine and 1, 6-hexamethylenediamine) as raw materials, biomass bisphenol DP, DC and DH are prepared through a simple ring-opening reaction, and then the monomer is prepared through a glycidyl reaction. A bisamide structure is innovatively introduced into the epoxy resin monomer, so that the epoxy resin monomer has the advantages of simple and convenient synthesis process, high yield, easily available raw materials, good biological safety and the like, and the performance is superior to that of traditional petroleum-based epoxy resin. The bio-based epoxy resin prepared based on the monomer shows a novel molecular structure and excellent mechanical properties and heat resistance.

The invention belongs to the technical field of high polymer materials, and particularly discloses glycidyl ester type epoxy resin and a preparation method thereof, the preparation method comprises the following steps: (1) melting polymerized rosin, adding a first catalyst, maleic anhydride, methacrylic acid and hydroxyl-terminated hyperbranched polyester, and reacting to obtain a precursor; and (2) adding bisphenol A epoxy resin and a second catalyst into the precursor, and reacting to obtain the glycidyl ester type epoxy resin. According to the invention, maleic anhydride, methacrylic acid, hydroxyl-terminated hyperbranched polyester and bisphenol A epoxy resin are combined; the three-dimensional synergistic enhancement of rigidity-flexibility-branching is realized, the proportion of rigid and flexible chain segments in a molecular structure is effectively coordinated, reaction active sites and crosslinking density are effectively improved, more reaction active sites and reaction activity are provided, and the mechanical property of a product is effectively improved.

The invention relates to automobile film surface protection, and provides a scratch-resistant coating composition and a preparation method thereof. The composition is prepared from polymer resin containing an acrylate group, polysiloxane acrylate containing a hydrolyzable alkoxy silicon group, composite silane modified double-particle-size nano silicon dioxide, a photoinitiator, an organic silicon cross-linking agent and an auxiliary agent, wherein the nano silicon dioxide is composed of a small-particle-size group and a large-particle-size group; and gamma-methylacryloyloxypropyl silane and gamma-glycidoxypropyl silane are respectively grafted to the two monomers. A micro-thin transparent hard coating is formed on the surface of a polyester base material through staged ultraviolet curing and damp-heat curing, so that the coating has high surface hardness and abrasion resistance and excellent damp-heat aging adhesive force and whitening resistance while keeping high light transmittance and low haze.

The invention relates to the field of ceramic packaging materials, in particular to a packaging material for a high-voltage-resistant ceramic side wall and a preparation method of the packaging material. The packaging material is prepared from an epoxy-silica hybrid prepolymer, an aluminum oxide and silicon dioxide core-shell composite filler, methylhexahydrophthalic anhydride and 2-ethyl-4-methylimidazole, wherein the hybrid prepolymer is prepared by carrying out hydrolytic condensation on bisphenol A diglycidyl ether, hydroxyl-terminated PDMS (Polydimethylsiloxane) and 3-glycidoxypropyltrimethoxysilane; low viscosity and low volatile matter are realized; the core-shell filler takes aluminum oxide as a core and silicon dioxide as a shell, and a shell layer is grafted with epoxy silane so as to be chemically bonded with resin. And after curing, the power frequency short-time electrical strength of the packaging layer is greater than or equal to 20 kV / mm, the partial discharge initial voltage is greater than or equal to 3 kV, the volatile matter is less than or equal to 1.0 wt%, and the water content is less than or equal to 0.2 wt%.

This application discloses a harmonica tube and a preparation method thereof, a liquid cooling plate, a battery, and an electric apparatus, where a material of the harmonica tube includes a polyphenylene sulfide composition, and the polyphenylene sulfide composition includes a polyphenylene sulfide resin and a toughening agent; the toughening agent includes a copolymer of an olefin and a glycidyl ester. By providing the polyphenylene sulfide composition as the material for the harmonica tube, this application facilitates reducing issues such as material breakage or poor extrusion flow during extrusion molding, enabling the formed harmonica tube to exhibit excellent mechanical strength, deformation resistance, corrosion resistance, heat resistance, heat dissipation, and creep resistance, lowering the risk of cracking under pressure during use, and enhancing production capacity and product quality.

The application discloses a self-emulsifying degradable carbon fiber sizing agent and a preparation method and application thereof. Raw materials of the self-emulsifying degradable carbon fiber sizing agent include the following components in parts by weight: diglycidyl ester epoxy resin monomer 20-30 parts, fatty amine 1-3 parts, amine curing agent 5-10 parts, sodium p-aminobenzenesulfonate 1-3 parts, water 15-20 parts and acetone 20-30 parts. The self-emulsifying degradable carbon fiber sizing agent can significantly improve wear resistance of the carbon fiber and interface performance of a composite material, and can be degraded under mild conditions, and the carbon fiber recovered has good performance.

The application relates to a conductive silver glue and a preparation method and application thereof, and belongs to the technical field of bonding materials.The conductive silver glue comprises an epoxy resin, an active diluent, a curing agent, an accelerator and silver powder; the epoxy resin comprises a main body resin and an auxiliary resin; the main body resin comprises a glycidyl amine type epoxy resin; and the auxiliary resin comprises a combination of a phenolic epoxy resin, a triphenylmethane type epoxy resin and an alicyclic epoxy resin.The conductive silver glue provided by the application is a high-reliability conductive silver glue of an epoxy resin system, has the characteristics of high moisture and heat resistance, high high-temperature bonding force, high residual glue rate and low resin overflow, effectively solves the problem that the existing conductive silver glue has low reliability under high-temperature and high-humidity conditions, is suitable for complex scenes, and has a simple preparation method and controllable cost.

The invention provides macroporous silicon dioxide with the surface covalently expressed by single-layer branched polyethyleneimine and a preparation method of the macroporous silicon dioxide. The preparation method comprises the following steps: mixing and stirring branched polyethyleneimine and an aqueous solution of a water-soluble anionic surfactant to obtain a supramolecular micelle system; the preparation method comprises the following steps: mixing tetraethoxysiloxane, glycidoxypropyltrimethoxysilane and an optional organic solvent to form a siloxane solution; dropwise adding a siloxane solution into the supramolecular micelle system under stirring to obtain a concentrated emulsion; and incubating the concentrated emulsion at normal temperature, crushing, washing and drying in vacuum. According to the synthesis of surface polyaminated silicon dioxide, due to the use of a small amount of glycidoxypropyltrimethoxysilane, branched polyethyleneimine can form a small amount of covalent bonds with silicon dioxide so as to be fixed on the pore surface, and meanwhile, a large amount of active amino hydrogen of polyethyleneimine can be retained; the hydrolysis rate of the siloxane can be adjusted by the polarity of the organic solvent.

The application discloses a kind of eluent and its preparation method and application, preparation method includes: adding potassium methoxide methanol solution to the trimethylolpropane in molten state, after stirring, vacuumizing, then droping glycidol monomer, after reaction, add methanol, dry, obtain hyperbranched polyglycerol ether;Add carbonyl imidazole to the N,N-dimethylformamide solution of saturated fatty acid, after stirring and mixing, drop to the N,N-dimethylformamide solution of hyperbranched polyglycerol ether, reaction is heated in nitrogen atmosphere, after reaction, the product is treated, obtain temperature-sensitive hyperbranched polyglycidol ether eluent.The eluent prepared in the application can greatly reduce the treatment cost of elution waste liquid while efficiently removing heavy metals.

The invention relates to a process for the synthesis of triglycidyl catechol based on eugenol. The object of the invention is to synthesize plastics, in particular epoxy resins, fiber-reinforced plastics, etc., based on renewable resources, especially for cabin construction in aviation, with a significantly increased bio-content. This object is achieved according to the invention by a process according to claim 1.

A demulsifying agent may comprise the structureR1 may be a hydrocarbyl group or heterohydrocarbyl group comprising from 1 to 20 carbon atoms. m may be from 2 to 10, n may be from 5 to 20, and p may be from 2 to 15. R2 may comprise a residue of propylene oxide. R3 may comprise a residue of glycidol. Embodiments of the present disclosure may further comprise methods of making the demulsifying agent and methods of using the demulsifying agent to demulsify a hydrocarbon emulsion.

The invention discloses an SERS (Surface Enhanced Raman Scattering) flexible sensor based on dual-ion modification as well as a preparation method and application of the SERS flexible sensor, and belongs to the technical field of biomedical detection. A bacterial cellulose membrane (BCM) is used as a base material, cation modification (QBCM) is carried out through glycidyl trimethyl ammonium chloride (EPTMAC), anion modification (TABCM) is carried out through tannic acid (TA), a functional substrate with asymmetric charge distribution and a porous structure is constructed, then Ag NPs are loaded on the modified base material through an in-situ reduction method, the QBCM-coated AgNPs and TABCM-coated AgNPs dual-ion active substrate is formed, and the AgNPs / TABCM-coated AgNPs dual-ion active substrate is used for preparing the composite material. The SERS flexible sensor is integrated through a layer-by-layer self-assembly (LbL) technology; the SERS flexible sensor can realize specific enrichment and synchronous detection of anionic kynurenic acid (KYNA) and cationic spermine (Spm) in urine, and is low in detection limit and good in reproducibility.

Provided is a light-curable composition that includes one or more monofunctional (meth)acrylate monomers with at least one monomer having a homopolymer glass transition temperature of from 0°C to 200°C; a crosslinker selected from multifunctional oligomeric (meth)acrylates, aliphatic urethane (meth)acrylates, aromatic urethane (meth)acrylates, polyester (meth)acrylates, and epoxy (meth)acrylates; one or more adhesion promoters selected from glycidyl (meth)acrylate, 2-hydroxyethyl(meth)acrylate acid phosphate, phosphonate ester-containing (meth)acrylic monomer, phosphate ester-containing (meth)acrylic monomer, silane, and (meth)acrylic acid; a photoinitiator; a flame retardant; and one or more fillers comprising hollow fillers, refractory fillers comprising kaolin, intumescent fillers, or mixtures thereof. The cured composition can function as an electrical insulator in battery assemblies, while protecting components from hot particles and gases in case of thermal runaway events.

This invention relates to the field of chemical synthesis technology, specifically disclosing a method for preparing vinyl ethylene carbonate. The method uses glycidyl as a starting material, first converting it to glycidaldehyde via a mild oxidation reaction with high selectivity. Then, using a cross-linked imidazole polymeric ionic liquid as a catalyst, glycidaldehyde undergoes an atom-economical cycloaddition reaction with carbon dioxide to construct a cyclic carbonate intermediate. Finally, under catalytic conditions, a condensation reaction introduces a vinyl functional group to obtain the vinyl ethylene carbonate product. This invention uses widely available, low-toxicity, and inexpensive glycidyl instead of highly toxic raw materials, and utilizes greenhouse gas carbon dioxide as a carbonyl source for resource utilization. The process route is highly atom-economical, the reaction conditions are mild, and the catalyst is easy to separate, recover, and recycle, effectively solving the prominent problems of high raw material toxicity, expensive catalysts, and difficult byproduct treatment in traditional preparation techniques.

The application discloses a natural monophenol grafted dimer acid diglycidyl ester plasticizer and a preparation method and application thereof, and belongs to the technical field of bio-based plasticizers. The natural monophenol grafted dimer acid diglycidyl ester is synthesized by ring-opening etherification of dimer acid diglycidyl ester and natural monophenol. The prepared natural monophenol grafted dimer acid diglycidyl ester has a high-polarity hydroxyl group, a good-flexibility ether bond group and a compatibilized benzene ring group in the structure, and can endow a PLA product with excellent ductility and migration resistance. The application not only realizes high-value utilization of the natural monophenol in the material field, but also provides a new method for preparing a high-quality environment-friendly plasticizer, and has good practicability.

A primer composition for producing an adhesive bond, containing (a) at least one thermoplastic polyurethane and (b) at least one organosilane selected from the group consisting of trialkoxysilylalkylsuccinic anhydrides, trialkoxyphenylsilanes, (3‑mercaptopropyl)trialkoxysilanes, (3‑aminopropyl)alkoxysilanes, 3‑(2‑aminoethylamino)propyltrialkoxysilanes, vinyltrialkoxysilanes and (3‑glycidyloxypropyl)trialkoxysilanes.

The invention discloses wave-transparent flame-retardant resin for a millimeter wave radome and a preparation method of the resin, and relates to a resin material with excellent wave-transparent performance and flame-retardant performance and a preparation method of the resin material. The resin is composed of fluorine-containing polyfunctional glycidyl amine type epoxy resin and a porous hollow fluorine-containing polyimide low-dielectric microsphere filler. The resin realizes low dielectric constant and low dielectric loss tangent value through specific molecular structure design and introduction of the functional filler, so that the wave-transparent performance is improved. Meanwhile, nitrogen and fluorine elements are introduced into the molecular structure, so that the resin shows a good intrinsic flame-retardant effect. The preparation method comprises the following steps: synthesizing the fluorine-containing polyfunctional glycidyl amine type epoxy resin and the porous hollow fluorine-containing polyimide low-dielectric microsphere filler, and then blending the fluorine-containing polyfunctional glycidyl amine type epoxy resin and the porous hollow fluorine-containing polyimide low-dielectric microsphere filler to obtain the wave-transparent flame-retardant resin for the millimeter wave radome. Compared with the prior art, the resin disclosed by the invention has the characteristics of keeping a low dielectric constant and a low dielectric loss tangent value at high temperature, the wave-transparent performance at high temperature is improved, and meanwhile, nitrogen and fluorine elements in a molecular structure provide an excellent intrinsic flame-retardant effect. The millimeter wave radome prepared from the resin disclosed by the invention has the advantages that the wave transmission performance is maintained, the flame retardant property is obviously improved, and the millimeter wave radome is suitable for advanced driving assistance systems (ADAS) and other millimeter wave radar application fields.

A tung oil-based polyurethane epoxy toughening agent, its preparation method, and its application are disclosed. The chemical structure is shown below: R1 is a methyl tungate molecular chain, and R2 is a backbone molecule in diisocyanate. The preparation method involves reacting methyl tungate with diethanolamine to obtain diethanol tungamide; the diethanol tungamide is then reacted with diisocyanate and glycidyl ether to obtain an epoxy-terminated tung oil-based polyurethane epoxy toughening agent. This toughening agent can react with a curing agent, covalently integrating into the epoxy resin curing network, improving the compatibility between the toughening agent and the epoxy resin, and avoiding problems such as decreased material transparency due to phase separation. Furthermore, the structure contains amide, urethane, and conjugated triene structures, which can form sacrificial bonds such as hydrogen bonds and π-π interactions with the epoxy resin matrix. This can improve the toughness of the epoxy resin while mitigating the adverse effects of flexible long carbon chains on the strength and other properties of the epoxy resin.

This invention provides a low-temperature resistant epoxy-terminated polyurethane toughened epoxy adhesive and its preparation method, comprising the following steps: Step 1, drying polyol and isocyanate; Step 2, adding the dried polyol, dried isocyanate, and a portion of catalyst at 50-60℃, and stirring; Step 3, continuing to maintain the 50-60℃ condition, adding glycidyl ether and the remaining catalyst, and stirring to obtain an epoxy-terminated polyurethane prepolymer; Step 4, slowly adding epoxy resin and stirring; Step 5, adding a curing agent to react; Step 6, eliminating air bubbles; Step 7, drying to further cure and obtain the epoxy-terminated polyurethane toughened epoxy adhesive. This invention can be used even in ultra-low temperature environments of -196℃, reducing engineering losses and safety issues caused by low-temperature brittle fracture of resin, extending service life, and saving manpower and resources. Simultaneously, the preparation process is simple and requires no complex equipment, and the synthesis temperature is low and easy to control.

The invention relates to the field of coatings, and discloses a high-temperature-resistant protective coating for an alloy surface and a preparation method of the high-temperature-resistant protective coating. The protective coating is prepared from waterborne epoxy resin, high-temperature-resistant filler, cardanol-based modified benzoxazine resin, a hyperbranched modifier, a curing agent and auxiliaries; according to the cardanol-based modified benzoxazine resin, paraformaldehyde is utilized to introduce an aldehyde group into a hydrogenated cardanol matrix to prepare a cardanol-based aldehyde-containing intermediate, then the cardanol-based aldehyde-containing intermediate reacts with 1, 5-naphthalene diamine, and then the cardanol-based aldehyde-containing intermediate reacts with gamma-aminopropyltriethoxysilane and paraformaldehyde through Mannich reaction to prepare the cardanol-based modified benzoxazine resin. The hyperbranched modifier is prepared by carrying out addition on 2, 4-dihydroxybenzophenone and isocyanatopropyltriethoxysilane, initiating hydrolytic condensation by utilizing a sol-gel method and then introducing triglycidyl isocyanurate to carry out a ring-opening reaction, and the protective coating prepared by the preparation method is strong in adhesive force, high in mechanical strength, good in wear resistance, good in wear resistance, good in wear resistance and good in wear resistance. Meanwhile, good corrosion resistance, high temperature resistance, ultraviolet aging resistance and flame retardance are achieved.

The present application relates to the technical fields of polymer and resin, especially to IPC C08G59, and more particularly to a halogen-free flame-retardant modified epoxy acrylic resin and a preparation method thereof.The present application provides a halogen-free flame-retardant modified epoxy acrylic resin, liquid phosphoric acid is reacted with a tetrafunctional glycidyl amine special epoxy resin, phosphorus elements are grafted onto the main chain of the epoxy resin, the reaction time is reduced, and the flame-retardant properties of the epoxy resin are improved.

Disclosed is a novel room-temperature curable bio-based epoxy vitrimer with a simple design of the chemical structure. A hempseed oil-derived glycidyl ester type epoxy (HOEP) was synthesized and then blended with a bisphenol A epoxy (DER331) to manipulate the properties of the resulting vitrimer s. An aliphatic amine hardener, diethylenetriamine (DETA), was selected as hardener to realize the room temperature curing in presence of triethanolamine (TEOA) as the catalyst. Unlike the traditional glycidyl ether epoxy-amine the thermosets which are based on sable C—N and ether linkages, the epoxy vitrimer herein includes ester bonds with HOEP and hydroxyls formed from the reaction of amine and epoxy in its cross-linked network. Dynamic transesterification (DTER) between the ester bonds and hydroxyls take place at elevated temperatures, imparting the vitrimer significant stress relaxation behavior and repairability. This provided a viable method to produce room temperature curable epoxy vitrimer s.

The invention relates to the technical field of anticorrosive paint, in particular to phenolic aldehyde-epoxy anticorrosive water-based paint and a preparation method thereof. The anticorrosive water-based paint is composed of a component A and a component B. The component A comprises a resin emulsion and slurry, and the component B comprises a curing agent and an auxiliary agent. The resin emulsion is prepared by emulsifying and compounding a benzoxazine prepolymer, an epoxy phosphoric acid prepolymer, bisphenol A type liquid epoxy resin, a betaine type zwitterionic emulsifier, dextran-based microgel, phytic acid, 3-glycidoxypropyltrimethoxysilane and the like. The preparation method comprises the following steps: emulsifying and compounding the benzoxazine prepolymer, the epoxy phosphoric acid prepolymer, the bisphenol A type liquid epoxy resin, the betaine type zwitterionic emulsifier, the dextran-based microgel, the phytic acid, the 3-glycidoxypropyltrimethoxysilane and the like. According to the system, high compatibility and long-term stability of phenolic aldehyde and epoxy in a water-based system are achieved, and an obtained coating film is compact, high in adhesive force and high in mechanical strength, has excellent water resistance, damp heat resistance and salt spray resistance, can keep a long-term protection effect in severe environments such as high humidity, high salt and temperature cycle, and has a good application prospect. The coating is applicable to metal anticorrosive coatings in the fields of ships, aviation, high-speed rails, ocean engineering and the like.

To provide a resin composition which can suppress warping of a cured product and has excellent adhesion to a load in the vertical direction of a cured product film after environmental testing. The solution is a resin composition containing (A) an epoxy resin, (B) a (meth)acrylic polymer which is in a liquid state at 25°C, (C) a curing agent, and (D) an inorganic filler, wherein the (A) component contains (A-1) a glycidyl amine type epoxy resin.

The application discloses a polarizer protective film and a preparation method thereof, and the polarizer protective film is prepared from polymethyl methacrylate (PMMA), cellulose ester, maleic anhydride grafted ethylene-methyl acrylate copolymer (MAH-g-EMA) and isocyanuric acid triglycidyl ester (TGIC) composite additives, wherein the PMMA is 55-70 parts, the cellulose ester is 25-40 parts, the MAH-g-EMA in the composite additives is 2-5 parts, and the TGIC is 0.4-1.2 parts; the number average molecular weight Mn of the MAH-g-EMA is 28000-35000, and the molecular weight distribution index PDI is less than or equal to 1.3. Through the synergistic enhancement design of the PMMA, the cellulose ester and the MAH-g-EMA / TGIC composite additives with specific Mn and PDI, the polarizer protective film can keep high transparency and low haze, and the water absorption can be significantly reduced, and the moisture heat aging stability can be improved.

The present application relates to the technical field of oil processing, and discloses a physical refining process for non-chemical refined oil, which comprises the following steps: preheating the oil and forming an extremely thin liquid film on the surface of a centrifugal disc; injecting superheated steam into the bottom layer of a deacidification zone through a microporous air distribution plate; generating a non-continuous micro-bubble array by high-frequency pulse modulation, and making the micro-bubbles migrate and expand upward under vacuum negative pressure; generating a cavitation collapse effect by the micro-bubbles penetrating the gas-liquid interface, generating a shock wave to break the mass transfer boundary layer, and stripping the free fatty acid components in the liquid film to the gas phase. The present application replaces macroscopic fluid sweeping with microcosmic transient stripping, realizes efficient deacidification when the heat exposure temperature of the oil is lower than 230 DEG C, effectively inhibits the generation of trans-fatty acids and glycidyl esters, maintains the mechanical balance of the liquid film surface while ensuring the driving force of deacidification, reduces the loss of neutral oil, and improves the refining yield.