112 results about "Diacrylate ester" patented technology

An active energy ray-curable inkjet printing ink composition satisfies requirements A to E below is provided: (A) the content of amine-modified oligomer is 1.0 to 20.0% by mass; (B) alkoxy group-containing (meth)acrylate monomers are contained by 2.0 to 20.0% by mass; (C) (meth)acrylate monomers having an alkyl group with 6 to 20 carbon atoms is contained by 2.0 to 25.0% by mass; (D) at least one type selected from the group that consists of 1,6-hexanediol diacrylate, 3-methyl-1,5-pentanediol diacrylate, dipropylene glycol diacrylate, 1,10-decanediol diacrylate, propoxylated(2)neopentyl glycol diacrylate, and hydroxypivalic acid neopentyl glycol diacrylate is contained by 30.0 to 60.0% by mass; (E) as photopolymerization initiators, ethoxy(2,4,6-trimethylbenzoyl)phenylphosphine oxide is contained by 3.0 to 15.0% by, and oligo(2-hydroxy-2-methyl-1-(4-(1-methylvinyl)phenyl)propanone) and / or 2-hydroxy-1-{4-[4-(2-hydroxy-2-methylpropionyl)phenoxy]phenyl}-2-methylpropanone is / are contained by 2.0 to 10.0% by mass, where the total content of photopolymerization initiators is 6.0 to 25.0% by mass.

The invention relates to the technical field of high polymer materials, in particular to high-strength and high-toughness modified plastic particles as well as a preparation method and application thereof. The preparation method of the high-strength and high-toughness modified plastic particles comprises the following steps: carrying out a reaction on MMT / CNTs and diisocyanate to prepare isocyanate-based MMT / CNTs; the preparation method comprises the following steps: reacting isocyanate-based MMT / CNTs with glycerol 1, 3-diglycerol alkyd diacrylate to prepare MMT / CNTs containing alkenyl groups; the preparation method comprises the following steps: carrying out grafting reaction on maleic anhydride, alkenyl-containing MMT / CNTs and POE (Polyolefin Elastomer) to prepare a modifier; and carrying out melt blending, extrusion, cooling and pelletizing on the modifier, the auxiliary agent and PA6 to obtain the high-strength and high-toughness modified plastic particles. The nano filler MMT / CNTs and the polyolefin elastomer POE are introduced, so that the modified plastic particles taking the PA6 as the matrix have high strength and high toughness.

The invention discloses high-temperature photoetching silver paste suitable for narrow line width and line spacing, which is prepared from the following components in parts by weight: 20-40 parts of photosensitive resin, 20-40 parts of ethoxylated 1, 2, 4-trimethyl-1, 3-pentanediol monoisobutyrate, 20-30 parts of a solvent and 1- The invention relates to a photocurable conductive coating which is prepared from the following components in parts by weight: 10 to 30 parts of 1, 6-hexanediol diacrylate, 5 to 15 parts of a photoinitiator, 0.5 to 1 part of an antioxidant, 0.5 to 1 part of 2-hydroxy-4-n-octyloxybenzophenone, 0.5 to 1.5 parts of a defoaming agent, 0.5 to 1.5 parts of a flatting agent, 0.5 to 1.5 parts of a dispersing agent, 5 to 20 parts of an organic solvent, 60 to 85 parts of conductive filler and 0.5 to 5 parts of glass powder. The selected photosensitive resin is formed by mixing alkali-soluble epoxy acrylic resin and alkali-soluble polyurethane acrylic resin according to the weight part ratio of 10: (2-6). According to the high-temperature photoetching silver paste suitable for the narrow line width and line distance, the five steps of printing, baking, photoetching, developing and sintering are achieved, patterns which cannot be manufactured in a traditional printing mode can be manufactured, and a high-density circuit with the line width and the line distance reaching 20 micrometers / 20 micrometers can be manufactured.

The invention discloses an energetic slurry toughening and photocuring 3D printing method, relates to a preparation method of energetic slurry, and aims to solve the problems that an existing energetic material is poor in mechanical property, poor in toughness and easy to crack; the particles are fast to settle in the light-cured resin, the stability is poor, and the printing precision is poor. The invention develops a photocuring high-energy resin for photopolymerization additive manufacturing. The composition contains a high-energy filler, an acrylate adhesive, whiskers and an inert plasticizer. The material has the characteristics of compatibility, printability and mechanical property, and the possibility of printing increasingly complicated high-energy articles is proved through experiments. The preparation method of the light-cured resin comprises the following steps: adding the low polymer bisphenol A epoxy acrylate and the six-functionality polyurethane acrylate; diluting monomers including 1, 6-hexanediol diacrylate and trimethylolpropane triacrylate; uniformly mixing an auxiliary agent, a thickening agent and a dispersing agent, and magnetically stirring for 30 minutes to obtain the light-cured resin. A preparation method of the energetic slurry comprises the following steps: mixing light-cured resin, whiskers, an inert plasticizer, energetic particles, a photoinitiator and a light absorber, and uniformly stirring to obtain the energetic slurry; after the energetic slurry is used for 3D printing, a sample piece is obtained, the yield reaches 95%-100%, the cost is low, preparation is easy, and the method can be applied to the field of energetic slurry 3D printing.

The invention discloses 3D printing high-light-transmittance bio-ink, an artificial 3D algal-bacterial symbiont and a preparation method and application of the artificial 3D algal-bacterial symbiont. The 3D printing high-light-transmittance bio-ink is prepared from polyether F127 diacrylate, polyethylene glycol diacrylate, pyridine degradation special-effect bacterium paracoccus sp. NJUST47, chlorella sorokiniana FACHB-275, a light absorbent and a liquid culture medium containing a photoinitiator, and the 3D printing high-light-transmittance bio-ink is prepared into an artificial 3D bacterium-algae symbiont through one-step 3D printing. The 3D printing high-light-transmittance bio-ink has good synergistic pyridine degradation performance, the constructed artificial 3D algal-bacterial symbiont has high algal-bacterial loading capacity and excellent light utilization rate, enhanced removal of volatile toxic organic pollutant pyridine can be achieved, and degradation stability is good.

The invention provides temperature-sensitive ink suitable for various printing modes, a preparation method thereof and a printed product. The ink is prepared from the following raw materials in percentage by mass: 15 to 45 weight percent of aromatic polyurethane acrylic resin, 5 to 45 weight percent of modified epoxy acrylic resin, 5 to 10 weight percent of ethoxylated trimethylolpropane triacrylate, 5 to 10 weight percent of 1, 6-hexanediol diacrylate, 5 to 10 weight percent of tetrahydrofuran acrylate, 5 to 10 weight percent of acryloyl morpholine, 5 to 10 weight percent of co-initiator, 0.5 to 1.5 weight percent of polyethylene wax, 4 to 10 weight percent of photosensitizer, 0.5 to 1.5 weight percent of heat stabilizer and 5 to 15 weight percent of calcium carbonate. According to the invention, the resin which is easy to yellow in a high-temperature environment is added into the formula, and the excessive and active photosensitizer is combined, so that the coating can obtain an excellent temperature band color change effect and an irreversible color change effect under a high-temperature condition.

The invention provides a pH-responsive antibacterial multifunctional hydrogel dressing and a preparation method thereof, and belongs to the technical field of hydrogel. The preparation method comprises the following steps: (1) mixing a diacrylate monomer and a diamine monomer according to a molar ratio of 1.1: 1-2: 1 for reaction, and purifying to obtain poly (beta-amino ester); and (2) mixing hyaluronic acid with epsilon-poly-L-lysine, adding a poly (beta-amino ester) solution dissolved in deionized water, repeatedly sucking and extruding, defoaming, and standing to form the hydrogel. The collagen hydrogel has rapid self-repairing performance, good pH intelligent responsiveness and good antibacterial property, the application range of the collagen hydrogel can be widened, and the service life of the collagen hydrogel can be prolonged.

The invention provides a solid acid catalyst and application thereof in esterification reaction of polyethoxy dihydric alcohol and acrylic acid, and relates to the technical field of preparation of polyethylene glycol diacrylate. The solid acid catalyst is a UIO-66-SO3H catalyst based on a UIO-66 framework, the catalyst is prepared from ZrCl4, formic acid, terephthalic acid and 2-sulfonic acid terephthalic acid through a reaction, the catalyst can catalyze an esterification reaction of polyethyoxyl dihydric alcohol and acrylic acid under the solvent-free condition, a subsequent desolventizing step is avoided, energy consumption is reduced, and the method is suitable for industrial production. And the prepared polyethoxy glycol diacrylate product is colorless and transparent in color, high in purity, low in polymerization degree, moderate in viscosity and wider in application space.

The invention discloses a preparation method of a self-repairing LATP composite solid electrolyte membrane, which comprises the following steps: S1, hydroxylating titanium aluminum lithium phosphate nanoparticles, and coating with an isocyanate polyurethane prepolymer to obtain porous PU-LATP particles; s2, carrying out copolymerization on adamantanediol diacrylate, acrylate and furfuryl acrylate, and then carrying out a Diels-Alder reaction with bismaleimide so as to form a reversible cross-linked precursor solution; and S3, mixing the PU-LATP particles with the precursor, a lithium salt and an auxiliary agent, carrying out vacuum defoaming, and drying to obtain the self-repairing LATP composite solid electrolyte membrane. According to the preparation method disclosed by the invention, the solid electrolyte membrane is endowed with the capability of quickly self-repairing microcracks at room temperature, and high ionic conductivity and a wide electrochemical window are considered at the same time; the mechanical strength is obviously improved, the thermal dimensional stability is excellent, and the strict requirements of the solid-state lithium battery on high safety and long cycle life can be met.

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.

A polyelectrolyte hydrogel coating with strong substrate binding performance and a method of manufacturing the same are provided. The method includes: 1) activating a substrate by applying oxygen plasma; and 2) dissolving a polycationic polymer, a polymeric monomer, a silane coupling agent and an initiator to obtain a precursor solution, vacuumizing the precursor solution to remove air bubbles, applying the vacuumized precursor solution to a surface of the substrate activated by the oxygen plasma, and performing an in-situ polymerization and curing process under nitrogen or rare gas atmosphere. The polymeric monomer includes at least one of: acrylamide, acrylic acid, hydroxyethyl methacrylamide, 2-acrylamido-2-methyl-1-propanesulfonic acid, polyethylene glycol (diol) diacrylate, 2-methacryloxyethylphosphocholine, 3-[[2-(Methacryloyloxy)ethyl]dimethylammonio]propane-1-sulfonate, and 3-[[2-(methacryloyloxy)ethyl]dimethylammonium] propionate. The silane coupling agent has a carbon-carbon double bond functional group.

The invention relates to a production process of a writable invisible adhesive tape, and belongs to the technical field of adhesive tapes. The preparation method comprises the following steps: mixing high-crystalline polypropylene resin, inorganic matters and a silsesquioxane antistatic agent to obtain a writable invisible layer; the writable invisible layer, the middle layer and the back adhesive layer are extruded and formed by a double-screw extruder, and then are subjected to two-way extension, corona treatment and coiling to obtain the writable invisible adhesive tape; the silsesquioxane antistatic agent disclosed by the invention is obtained by carrying out a reaction on anhydrous toluene, epoxy cyclohexyl-polyhedral oligomeric silsesquioxane, polyether F127 diacrylate, 1, 3-diaminoisopropanol and triethylamine. The writable invisible adhesive tape prepared by the invention has excellent mechanical properties, is not easy to peel off and has strong holding power.

The invention discloses an industrial packaging coating integrating anti-counterfeiting, antibacterial and pathogen detection functions and a preparation method thereof, and relates to the technical field of industrial packaging coatings. The coating is prepared from modified polyurethane acrylate, ethyoxyl ethyoxyl ethyl acrylate, 1, 6-hexanediol diacrylate, hydroxyethyl methylacrylate, trimethylolpropane triacrylate, epsilon-polylysine, carbon quantum dot-microencapsulated spiropyrane, a water-based flatting agent, 2, 4, 6-trimethyl-1, 3-pentanediol diacrylate, a water-based curing agent, a defoaming agent, a defoaming agent and a solvent. The cleaning agent is prepared from 2, 4, 6-trimethylbenzoyl diphenyl phosphine oxide, a dispersing agent, lauryl sodium sulfate, pathogen microcapsules and ethyl acetate. The three functions of anti-counterfeiting, antibiosis and pathogen detection are integrated into a single coating, the limitation that a traditional packaging material is single in function is broken through, the anti-counterfeiting reliability is improved, no harmful substance is migrated out, and efficient pathogen screening is achieved; safety standards are met, harmful substance migration is avoided, and the base material is matched with various base materials such as films and fibers and is mechanically strengthened.

Disclosed herein are processes for producing 1,3-propanediol acrylate, 1,3- propanediol diacrylate, 1,3-propanediol monoacrylate component, 1,3-propanediol monodiacrylate component, 1,3-propanediol dimethylacrylate, and 1,3-propanediol diglycidyl ether. Also disclosed herein are compositions comprising 1,3-propanediol acrylate, 1,3-propanediol diacrylate, 1,3-propanediol monoacrylate component, 1,3- propanediol monodiacrylate component, 1,3-propanediol dimethylacrylate, and / or 1,3- propanediol diglycidyl ether.

The present application relates to heat exchanger technical field, specifically to a kind of corrosion-resistant composite finned tube and its preparation process.The present application obtains flame retardant with allyl bisphenol A and 4-nitro phthalonitrile as main raw material.Then with four sulfur alcohol A, four sulfur alcohol B, 1,4-butanediol diacrylate as main raw material, curing agent is obtained.Finally, with epoxy resin E20, epoxy resin E12, polyether polyol, filler, flame retardant, curing agent, defoaming agent, accelerator and photoinitiator as raw material, epoxy resin coating is obtained;The epoxy resin coating is coated to the surface of finned tube, and the finished product is obtained.The finished product obtained by the present application has good flame retardancy, corrosion resistance and mechanical properties, so it has broad application prospect.

[Problem] To provide an active energy ray-curable ink composition for inkjet, which has excellent inkjet head discharge ability, forms a printed layer having excellent adhesion to various substrates, has excellent curability, does not tack on the surface after curing, has excellent flexibility when bent together with a substrate, has excellent image quality after curing, and can be used in the field of inkjet printing. The smell is very small after curing. [Solution] An active energy ray-curable inkjet ink composition satisfying the following conditions (A) to (D): (A) the content of an amine-modified oligomer accounting for 1.0% to 20.0% by mass of the total solid content, (B) the content of an alicyclic skeleton-containing monofunctional monomer forming a polymer having a Tg of 10 DEG C to 60 DEG C during polymerization accounting for 16.0% or more by mass of the total solid content, (C) 3-methyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3-trimethyl-1 the content of 1, 5-pentanediol diacrylate accounts for 8.0% to 25.0% by mass of the total solid content, and the content of acryloylmorpholine accounts for 3.0% to 15.0% by mass of the total solid content.

The invention relates to ultraviolet curing ink for a high-glossiness environment-friendly trivalent chromium surface, a product and a preparation method of the ultraviolet curing ink. The ultraviolet curing ink is prepared from the following raw materials in parts by mass: 35 to 45 parts of polyurethane acrylate resin, 15 to 30 parts of epoxy acrylate resin, 10 to 20 parts of glycol diacrylate, 5 to 10 parts of phosphate acrylate, 3 to 8 parts of polyvinyl butyral and 3 to 5 parts of a photoinitiator. The ultraviolet curing ink is applied to the surface of an environment-friendly trivalent chromium electroplating product and has good adhesive force and wear resistance.

The invention belongs to the technical field of phase change material preparation, and particularly relates to a high-stability composite phase change material and a preparation method thereof. According to the method, an organic solid-liquid phase change material is taken as a solvent, a reaction monomer octadecyl acrylate and a cross-linking agent 1, 6-hexanediol diacrylate are subjected to a cross-linking reaction through a redox initiation system (benzoyl peroxide and N, N-dimethyl-p-toluidine), and the solid-liquid phase change material is prepared. A phase-change high-molecular polymer with a phase-change function is constructed, a coating structure is formed on the organic solid-liquid phase-change material, and finally the composite phase-change material with excellent thermal stability and high latent heat characteristics is prepared. The preparation process disclosed by the invention can be carried out under a low-temperature condition, energy consumption and production cost can be effectively reduced, the process is simple, and batch production is easy; the prepared composite phase change material has wide application prospects in the fields of energy storage, temperature control and the like.

The invention discloses a UV (ultraviolet) jet printing pretreatment coating for a PVC (polyvinyl chloride) edge band as well as a preparation method and application of the UV jet printing pretreatment coating, and the UV jet printing pretreatment coating comprises the following components in percentage by weight: 5-15% of hydroxyethyl methylacrylate, 5-10% of 1, 6-hexanediol diacrylate, 4-8% of an acylphosphine oxide photoinitiator, 3-8% of octyl acrylate and 30-40% of a polyurethane acrylate oligomer. The UV adhesive force auxiliary resin is prepared from the following components in percentage by weight: 1 to 4 percent of phosphoric acid modified methacrylate, 30 to 40 percent of UV titanium dioxide slurry, 0.1 to 1 percent of surfactant and 0.1 to 1 percent of photo-thermal composite stabilizer; the UV jet printing pretreatment coating prepared by the invention is directly coated on a colored PVC edge band by a roller coater and is connected with a line for UV curing, so that the colored PVC edge band is covered with a white coating, and the white coating is not only a prime coat, but also can be directly used as a finish coat, has good adhesive force to the colored PVC edge band when being used as the white prime coat, provides certain covering power, and can be used as a coating for coating the colored PVC edge band. And after the UV jet printing ink of the PVC edge band is subsequently jet-printed, accurate color expression and the adhesive force of the UV jet printing ink to the colored PVC edge band can be provided.

The invention provides naphthyl high-refractive-index optical resin as well as a preparation method and application thereof, the structural formula of the naphthyl high-refractive-index optical resin is as shown in formula (1), and the refractive index of the naphthyl high-refractive-index optical resin is 1.685-1.778; the weight-average molecular weight of the naphthyl high-refractive-index optical resin is 2.24 * 10 < 4 >-8.92 * 10 < 4 > g / mol; the invention relates to a method for preparing naphthyl high-refractive-index optical resin, which comprises the following steps: dissolving a dimercapto compound and binaphthol fluorene diacrylate in a solvent A, adding a catalyst under the protection of nitrogen, uniformly stirring, and carrying out Michael addition polymerization reaction under the conditions of normal pressure, polymerization temperature of 0-120 DEG C and polymerization time of 1-24 hours to obtain a mixed solution; then adding the mixed solution into a solvent B, regenerating, separating out blocks, and washing and purifying to obtain the naphthyl high-refractive-index optical resin. The material has the beneficial effects of high refractive index and high thermal stability, can meet the use requirements of higher refractive index, lighter weight and thinner weight of optical products, and is suitable for the technical field of optical materials.

The invention relates to a high-performance anti-caking UV varnish for soft packaging of cigarettes and a preparation method thereof. The UV varnish comprises the following components calculated by weight: 25-35% of a modified aliphatic polyurethane acrylate resin, 10-15% of a fatty acid-modified epoxy acrylate, 30-35% of propoxylated neopentyl glycol diacrylate, 10-20% of ethoxylated 1,6-hexanediol diacrylate, 5-12% of a reactive tertiary amine co-initiator, 6-10% of a photoinitiator combination, and 2.48-4.82% of an auxiliary agent combination. The combination of the main resin, monomer, photoinitiator, etc. adopted in the present invention can obtain a UV varnish having excellent adhesion, ethanol resistance, friction resistance, environmental protection and other properties. In addition, the matching of appropriate specific auxiliary agents, wax powder, a polysiloxane surface-modified nano-alumina particle dispersion, and p-hydroxyanisole can further enable the soft packaging paper for cigarettes to have appropriate surface hardness and a suitable friction coefficient, thereby significantly reducing the caking phenomenon.

The invention provides a wafer protection adhesive tape, two-component glue and application thereof, the wafer protection adhesive tape comprises a base material layer and a composite glue layer, the composite glue layer comprises a first glue layer and a surface glue layer, and the first glue layer is compounded with the base material layer; the raw materials for preparing the surface adhesive layer comprise a component A, a component B and a photoinitiator, the mass ratio of the component B in the surface adhesive layer is 5-50wt%, the component A is an acrylate adhesive, the raw materials for preparing the component B comprise a hydroxyl monomer, an isocyanate monomer and an acrylic acid hydroxyl ester compound, and the photoinitiator is a photoinitiator. The acrylic acid hydroxyl ester compound is prepared from at least one of pentaerythritol triacrylate, dipentaerythritol pentaacrylate and trimethylolpropane diacrylate. The wafer protection adhesive tape is used for packaging and protecting the surface of a wafer, so that the reject ratio of wafer preparation can be reduced, and the probability of adhesive residue on the surface of the wafer or damage of the wafer is reduced.

The invention discloses a vibrating diaphragm of a sound production device, the sound production device and electronic equipment. The vibrating diaphragm is prepared from a blending material, the blending material comprises first acrylate rubber and second acrylate rubber, the mass ratio of R1 to R2 in the molecular structure of the first acrylate rubber is smaller than or equal to 40%, the glass transition temperature of the first acrylate rubber ranges from-60 DEG C to-33 DEG C, and the mass ratio of R1 to R2 in the molecular structure of the second acrylate rubber is smaller than or equal to 40%. The mass ratio of the first acrylate rubber in the acrylate rubber is greater than or equal to 50wt%; the mass ratio of R1 to R2 in the molecular structure of the second acrylate rubber is greater than or equal to 60%, the glass transition temperature of the second acrylate rubber is-25 DEG C to 10 DEG C, and the mass ratio of the second acrylate rubber in the acrylate rubber is less than or equal to 50wt%; the loss factor of the vibrating diaphragm in the temperature range of-60 DEG C to 20 DEG C is greater than or equal to 0.12. According to the vibrating diaphragm disclosed by the embodiment of the invention, the vibrating diaphragm is prepared by blending the first acrylate rubber and the second acrylate rubber with different glass transition temperatures, so that the vibrating diaphragm has high damping property, high flexibility and high elastic recovery rate within a relatively wide temperature interval.

The invention belongs to the field of thick film electronic element manufacturing, and particularly relates to chip resistor MK layer UV curing slurry and a preparation method thereof. The problems that an existing UV curing protective layer is insufficient in heat resistance, and cracking and falling are caused by mismatching of thermal expansion coefficients are solved. Through an epoxy-organic silicon hybrid resin system and a composite functional filler, the resin system comprises trimethylolpropane triacrylate, hexanediol diacrylate, an epoxy acrylate oligomer, an organic silicon modified acrylate oligomer, a phosphorus-containing acrylate functional monomer and a thermal polymerization inhibitor, and the functional filler is prepared from modified spherical aluminum oxide, modified silicon dioxide, a photoinitiator, a photoinitiator, a photoinitiator, a photoinitiator, a photoinitiator and a photoinitiator. According to the invention, the thermal shock resistance and insulation reliability of the protective layer are improved while the high efficiency of the UV photocuring process is maintained.

Disclosed herein are the synthesis and characterisations of the monoacrylate-functionalised phthalonitriles (PNs). Their chemical structures are verified with 1H nuclear magnetic resonance (NMR) and Fourier transform infrared (FT-IR) spectra to confirm the successful synthesis. Subsequently, photopolymerisable resins, based on the prepared PN monomer, a commercial diacrylate and other additives can be formulated. Being post thermally treated, the PN based resins result in polymeric products with excellent thermal and mechanical performances, suggesting the high-performance nature of the PN based resins. Interestingly, the resins exhibit significant high carbon yield, indicating that they are greatly promising candidates as carbon precursors. As it is found that the resins have good three-dimensional (3D) printing capability and can be fabricated using high-resolution projection micro-stereolithography (PμSL) additive manufacturing technology, complex 3D structured objects are herein printed and performed follow-up post treatment. After being progressively pyrolysed up to 1000° C., the printed objects can be readily converted to glassy carbon (GC) structures with structural integrity and fidelity. Only ˜25% of shrinkage was found for the converted GC structure due to the significantly high char yield of the PN resins. This work not only expands the library of new class of high-performance PN resins for popular additive manufacturing but also features the precision 3D printing of GC with low shrinkage and high carbon yield for the first time.

The invention discloses a high-hardness antibacterial coating and a preparation method thereof. The coating is prepared from polyfunctional group acrylate, chain extension type organic silicon modified acrylate, crosslinking type organic silicon modified acrylate, an ionic antibacterial agent, a photoinitiator and a diluent, the chain extension type organic silicon modified acrylate is prepared from hydrogen-terminated silicone oil and a diacrylate monomer in a molar ratio of 1: (2-2.1) through hydrosilylation; the cross-linked organosilicone modified acrylate is prepared by the following steps: carrying out ring opening polymerization on chain-extending organosilicone modified acrylate and tetramethylcyclotetrasiloxane in a molar ratio of 1: (2-6) under the action of a cationic catalyst to obtain a side hydrogen-containing intermediate, and then carrying out hydrosilylation on the side hydrogen-containing intermediate and a diacrylate monomer. The coating provided by the invention can effectively solve the synergistic problem of hardness, flexibility and optical light transmittance of a screen protection coating, and realizes the antibacterial function of the screen protection coating.

Disclosed herein are processes for producing 1,3-propanediol acrylate, 1,3-propanediol diacrylate, 1,3-propanediol monoacrylate component, 1,3-propanediol dimethylacrylate, and 1,3-propanediol diglycidyl ether. Also disclosed herein are compositions comprising 1,3-propanediol acrylate, 1,3-propanediol diacrylate, 1,3-propanediol monoacrylate component, 1,3-propanediol dimethylacrylate, and / or 1,3-propanediol diglycidyl ether.

The invention belongs to the field of preparation of novel printing ink, and particularly relates to high-adhesion quick-drying ultraviolet curing printing ink and a preparation method thereof. Diphenylmethane 4, 4 '-diisocyanate and 2-hydroxypropyl acrylate are adopted as reactants to prepare a substance 1, polylactic acid and maleic anhydride react to obtain a substance 2, the substance 2 is adopted to modify the substance 1 to obtain a novel acrylic acid modified resin material, and microcrystalline cellulose is modified by 2-ethylhexyl isocyanate to obtain a composite nano filler. Zinc oxide is modified by hexamethylene diisocyanate to obtain a photoinitiator I, and 2-isopropylthioxanthone, hydroxyethyl methylacrylate and diethylene glycol diacrylate phthalate are combined, so that the obtained ultraviolet curing ink has lower volume shrinkage rate, namely higher adhesive force, and after being practically applied to tinplates, wood plates and glass, the ultraviolet curing ink has the advantages that the ultraviolet curing effect is good, and the service life of the ultraviolet curing ink is prolonged. Visual eye observation shows that the film is good in adhesiveness and not prone to damage, and the quick-drying effect is achieved through multiple active groups.

The application discloses a pressure-sensitive film based on force response cholesteric main chain liquid crystal oligomer, and the structure of the pressure-sensitive film based on force response cholesteric main chain liquid crystal oligomer is sequentially PDMS layer, cholesteric liquid crystal oligomer layer and substrate layer from top to bottom; the cholesteric liquid crystal oligomer layer is obtained by reacting diacrylate liquid crystal monomer and dithiol; and the polymerization degree of the cholesteric liquid crystal oligomer layer is 2-10. The pressure-sensitive film based on force response cholesteric main chain liquid crystal oligomer disclosed by the application uses the oligomer with a polymerization degree of 2-10 obtained by polymerizing diacrylate liquid crystal monomer as the cholesteric liquid crystal oligomer layer, so that the visual degree is higher, the threshold of force response is controllable, and there is no liquid component in the pressure-sensitive film, so that the pressure-sensitive film is easier to assemble and more stable.

The invention relates to a copolymer with tissue adhesion and ROS (reactive oxygen species) response performance, a drug-loaded nanoparticle as well as a preparation method and application of the copolymer and the drug-loaded nanoparticle. The copolymer is formed by copolymerizing a diacrylate compound and an amino-containing compound, the diacrylate compound is selected from one or more of compounds as shown in a formula (I); the amino-containing compound is selected from one or more of compounds as shown in a formula (II-1) and a formula (II-2) or salts or stereoisomers thereof. The copolymer can deliver a drug for treating gastrointestinal oxidative stress related diseases to a diseased region in a targeted manner, can release a therapeutic drug in a responsive manner at the diseased region, has good gastric mucosa adhesion capability, and can improve local drug concentration, so that the therapeutic targeting and curative effect persistence of the drug are enhanced, and the curative effect of the drug is improved. The treatment effect is enhanced. # imgabs0 #