39results about How to "The synthesis reaction process is simple" patented technology

The invention relates to a polyfunctional castor oil-based photo-cured resin as well as a preparation method and application thereof. The preparation method comprises the following steps: with isocyanate and hydroxyl acrylate as raw materials, adding a polymerization inhibitor and a catalyst, introducing nitrogen for protection, and reacting for a certain period of time, so as to obtain an intermediate isocyanate semi-blocked prepolymer; adding castor oil into the prepared isocyanate semi-blocked prepolymer, so as to obtain castor oil-based urethane acrylate resin; and mixing the castor oil-based urethane acrylate resin with a photoinitiator and a diluent, and carrying out ultraviolet light radiation, so as to obtain UV castor oil-based resin with excellent performance. The photo-cured resin synthesized by virtue of the preparation method has relatively high molecular weight and viscosity, so that the interaction among resin molecules is enhanced, and the photo-crosslinking reaction efficiency of the resin is improved; the photo-cured resin contains more terminal double bonds, can be rapidly photo-cured and is suitable for being used as UV cured coatings, 3D printing materials and the like; and the prepared photo-cured resin has the beneficial effects that the water absorption rate and volume shrinkage rate of a cured film are substantially increased, meanwhile, the cost is low, the process is simple and controllable, and a product is relatively environment-friendly.

The invention relates to a light-cured resin with low water absorption and a preparation method thereof. The light-cured resin is silicane modified hydroxyl-terminated polybutadiene type urethane acrylate. The preparation method comprises the following steps of: 1) reacting an epoxy silicane coupling agent with a primary amine silicane coupling agent to generate a modified silicane chain extender; 2) reacting hydroxyl-terminated polybutadiene with diisocyanate to generate polyurethane prepolymer 1; 3) reacting the modified silicane chain extender with the polyurethane prepolymer 1 to generate polyurethane prepolymer 2; and 4) reacting the polyurethane prepolymer 2 with hydroxyl acrylate to generate the silicane modified hydroxyl-terminated polybutadiene type urethane acrylate.

The invention discloses three-functionality-degree organosilicon polyurethane acrylate and a synthetic method thereof. The invention is characterized in that an epoxy radical silane coupling agent is used for modifying a primary amino radical parhelium radical silane coupling agent to obtain a modified silane coupling agent containing three functional groups with active hydrogen; vulcabond and polymer dihydric alcohol are used for carrying out a reaction to obtain a polyurethane performed polymer (1) with NCO radical groups on both ends; then, hydroxy acrylic acid ester and the polyurethane performed polymer (1) are used for carrying out a reaction to obtain a polyurethane performed polymer (2) with an NCO radical group on one end; and finally, the polyurethane performed polymer (2) and the modified silane coupling agent react to obtain the three-functionality-degree organosilicon polyurethane acrylate. The invention has simple technology of the synthetic process and easy control, a product has regular structure, narrower molecular weight distribution and good consistency, the materials have the excellent properties of humidity resistance, heat resistance, weather resistance, oil resistance, good flexibility and low surface energy, and the invention can be applied to the industries of paint and adhesives.

The invention provides a synthetic method of resin with mixing and solidification functions. The synthetic method of the resin with the mixing and the solidification functions comprises the steps that 80-110 g of polyisoprene dibasic alcohol, 4-10 g of 3-ethyl-3-hydroxymethyleneoxetane, 5-12 g of hydroxyl acrylate, 0.1 g of polymerization inhibitor para hydroxybenzene methyl ether and 0.01 g of catalyst dibutyltin dilaurate are added into a three-mouth flask with a thermometer, the temperature is raised to 65 degrees, then 18-32 g of diisocyanate starts to be dropwise added, the temperature is controlled to be 70-75 degrees, and reaction is performed for 2-3 h. The content of NCO perssad is analyzed by an infrared spectrometer, until the NCO peak disappears completely, the heating reaction is stopped, and the urethane acrylate modified by oxetane can be obtained. The resin with the mixing and the solidification functions can manufacture three-dimensional products with low shrinking percentage, low warping, good flexibility, ageing resistance, high machining precision, good photocuring performance and excellent mechanical strength; in addition, the synthetic reaction is simple in technology and easy to control, no special equipment is needed to be used, no solvent is needed, and the production cost is low.

The invention relates to optical pressure-sensitive resin and a preparation method thereof. The optical pressure-sensitive resin is polyacrylate-modified polyurethane acrylate resin. The preparation method comprises the following steps of: adding iso-octyl acrylate, N-ethoxyl acrylamide, p-hydroxyanisole, 1-dodecanethiol and ethyl acetate to a three-neck flask, and increasing temperature to 65 DEG C; starting dropping an azoisobutyronitrile-containing ethyl acetate solution, controlling the temperature at 70-80 DEG C, and reacting for 2-3 hours to obtain a polymer I; adding isocyanate ethyl acrylate to the polymer I, controlling the temperature at 70-80 DEG C, and reacting for 2-3 hours; analyzing the content of an NCO group by using an infrared spectrometer; stopping heating reaction when the peak of NCO completely disappears. The optical pressure-sensitive resin prepared through the method disclosed by the invention is fast in curing, achieves the curing energy less than 1000 mj/cm<2> and has the advantages of excellent adhesive force on a base material, very good application value and suitability for the full-lamination process of a capacitive touch screen.

The invention relates to a structural adhesive and particularly relates to a single-component shock-resistant low-viscosity structural adhesive and a preparation method thereof, wherein the single-component shock-resistant low-viscosity structural adhesive is suitable for bonding motors and other structures. The preparation method comprises the following steps of (1) mixing liquid epoxy resin (40-80 parts) and a toughening agent (7-15 parts), and stirring at the temperature of 15-30 DEG C for 1h; (2) adding a curing agent (9-13.5 parts) while stirring, and continuing to stir at the temperature of 15-30 DEG C for 1h until uniformly mixing; (3) adding an accelerant (7-8 parts) while stirring, and continuing to stir at the temperature of 15-30 DEG C for 0.5h until uniformly mixing; and (4) adding a coupling agent (0-0.5 part) and pigment (0-1 part), and stirring at the temperature of 15-30 DEG C for 1h until uniformly mixing. Compared with the prior art, the single-component shock-resistant low-viscosity structural adhesive has the advantages that the toughening agent used by the invention is polyether amine, so that the high adhesive strength and temperature resistance of an epoxy system are remained, the viscosity of the system is reduced, and the flexibility and impact resistance of the adhesive are improved. The single-component shock-resistant low-viscosity structural adhesive is low in viscosity, and the adhesive can be coated on elements which are small in bonding gap and not easy to coat through self-permeation, so that the work efficiency can be greatly increased. A synthesis reaction process is simple, easy to operate and low in cost, and a product is wide in application range.

The invention provides a synthesizing method for multi-curing available optical resin. The method comprises the following steps: adding 80-110g of HDI tripolymer, 5-10g of 3-ethyl-3-(hydroxymethyl) oxacyclobutane, 4-10g of hydroxyl acrylate, 0.1g of polymerization inhibitor 4-methoxyphenol and 0.01g of catalyst dibutyltin dilaurate into a three-necked flask with a thermometer, and heating to 65 DEG C; controlling the temperature to be 60-75 DEG C, reacting for 2-3 hours, analyzing NCO group with an infrared infrared spectrometer; and stopping the heat reaction when the NCO peak does not change so as to obtain the multi-cured functional resin capable of free radical+cation+moisture reaction.

The invention provides an optical resin synthesis method, which comprises: adding 80-110 g of an epoxy-modified rosin ester, 4-10 g of a monohydric alcohol, 0.1 g of a polymerization inhibitor p-hydroxyanisole, and 0.01 g of a catalyst dibutyltin dilaurate to a three-necked flask having a thermometer, heating to a temperature of 65 DEG C, adding 18-32 g of diisocyanate in a dropwise manner, controlling the temperature at 70-75 DEG C, carrying out a reaction for 2-3 h, analyzing the NCO group content by using an infrared spectrometer, and stopping the heating reaction when the peak of NCO completely disappears so as to obtain the rosin ester modified polyurethane acrylate resin. According to the present invention, the obtained resin is the high-performance optical resin, has the refractive index of 1.52-1.54, has the good yellowing resistance, can be used for producing the high-end liquid-state optical transparent glue, avoids the disadvantages of low refractive index and poor yellowing resistance of the traditional liquid-state optical transparent glue, and is suitable for the whole adhesion process of the capacitive touch screen.

The invention relates to the preparation of a low-viscosity organosilicon material. The preparation comprises the following steps: accurately weighing 350-380 g of polyvinyl silicone oil, 4 g of a low hydrogen-containing silicone oil crosslinking agent, 20 g of a microcapsule platinum catalyst, 20 g of carbon black, 800 g of a modified silicon oxide powder with the average grain diameter of 5 mum, 600 g of a spheroid aluminum hydroxide powder with the average grain diameter of 40 mum, and 200 g of an aluminum hydroxide powder with the average grain diameter of 10 mum, sequentially adding the materials into a 2L double-planet power mixer, and stirring for 3-5 hours at the autorotation speed of 100 revolutions per minute and at the revolution speed of 8 revolutions per minute.

The invention relates to preparation of methylvinylsilane resin. The methylvinylsilane resin is prepared through the following steps: adding 41 to 43 g of ethyl orthosilicate, 8 g of toluene, 9 g of hexamethyldisiloxane, 3 g of tetramethyldivinyldisiloxane, 10 to 20 g of absolute ethyl alcohol and 1.4 g of concentrated hydrochloric acid (wherein wt% is 36%) into a three-neck flask equipped with a stirrer, a thermometer and a condenser tube; adding 15 g of water in an ice water bath drop by drop at a rate of 1 d/s, carrying out stirring for 5 min after addition, and then carrying out heating to 35 DEG C for a preliminary reaction for 25 to 40 min; allowing the temperature of a system to rise to 78 DEG C, carrying out a reaction for 4 h, then terminating the reaction, adding 1.43 g of NaHCO3 and carrying out heating to 125 DEG C to evaporate water and ethanol; after evaporation, carrying out a reflux reaction at 125 DEG C for 4 h, then adding 0.3 g of hexamethyldisiloxane, carrying out a reaction at 125 DEG C for 1 h, and then carrying out washing until a pH value is 7; and carrying out filtering so as to obtain a colorless transparent filtrate, transferring the filtrate to a pyriform flask, and carrying out pressure-reduced distillation to remove low-boiling-point substances like xylene so as to obtain the methylvinylsilane resin.

The invention relates to a single-component insulating structured adhesive with high thermal conductivity and a preparation method of the single-component insulating structured adhesive. Epoxy resin, modified epoxy resin, a toughening agent and a coupling agent are sequentially added to a double-planet power mixing kettle in sequence, revolution stirring and high-speed dispersing are started, and the components are stirred for 1 h at certain temperature; modified thermally conductive and insulating packing is added, and stirring is performed for 1 h; a latent curing agent is added, and stirring is performed for 1 h; fumed silica is added, stirring is performed for 1 h, a product is kept at certain pressure for 1 h, and the single-component insulating structured adhesive with high thermal conductivity is obtained. The single-component insulating structured adhesive with high thermal conductivity has the characteristics of being low in viscosity, good in flowability, resistant to high temperature and excellent in thermal conductivity.

The invention relates to a preparation method of conductive adhesive with high thermal conductivity and used for high-power LED package. The preparation method comprises the following steps: sequentially adding epoxy resin and a toughening agent into a double-planet power mixing kettle, starting revolution stirring and high-speed dispersion, at a certain temperature, stirring for 1h, adding a self-made functionalized graphene material and conductive silver powder, stirring for 1h, adding a latent curing agent, stirring for 1h, adding fumed silica, stirring for 1h, and maintaining for 1h at a certain pressure, thus obtaining the one-component conductive adhesive with high thermal conductivity. The conductive adhesive adopts a simple synthesis process, is low in cost and also has the characteristics of high strength, high temperature resistance, low shrinkage and excellent thermal conductivity and heat conductivity.

The invention relates to a one-component flexible electronic adhesive and a preparation method thereof. The adhesive is characterized by being prepared from raw materials in parts by weight as follows: 20-50 parts of liquid-state self-made modified epoxy resin, 15-40 parts of a curing agent, 20-40 parts of filler, 0-3 parts of a viscosity regulator, 0.2-1 part of a stabilizer and 2-15 parts of an accelerator, wherein the curing agent adopts a sulfhydryl compound; the accelerator adopts an amine accelerator, an amine derivative accelerator or an imidazole accelerator; the liquid-state self-made modified epoxy resin adopts one or a mixture of bisphenol A epoxy resin, bisphenol F epoxy resin and phenol-formaldehyde resin and is prepared through the following steps: liquid-state epoxy resin and the curing agent are mixed and stirred in the ratio being 85:15, the temperature is controlled to be 75-80 DEG C, the accelerator is added during stirring, stirring is continued for 2 h after complete impregnation, and the temperature is controlled to be 75-80 DEG C; a product is cooled to 15-30 DEG C for standby application. A synthetic reaction process is simple and easy to operate, the cost is low, and the product has stable performance and wide application.

The present invention relates to synthesis of a thiol-modified polyurethane resin. The synthesis comprises: vacuumizing 100 g of HTPB for 2-4 h at a temperature of 110 DEG C to remove the doped water; cooling to a temperature of 50 DEG C, adding 29 g of HDI, heating to a temperature of 85 DEG C after the constant temperature is achieved, carrying out a reaction for 2.5-3.5 h, stopping the heating until the NCO content achieves a designed value, adding 3.9 g of hydroxypropyl methacrylate, 1.2 g of mercaptoethanol and 2.1 g of 16-mercapto hexadecan-1-ol, and uniformly mixing; and carrying out a reaction for 2.5-3.5 h at a temperature of 70 DEG C to obtain the thiol-modified polyurethane resin.

The invention provides a sodium alkylarylsulfonate surfactant composition and its preparation and application. The method comprises mixing a raw material 1 and a raw material 2 to obtain a mixed material, wherein the raw material 1 comprises one or more of reverse order dewaxed oil or distillate from a decompression second line, reverse order dewaxed oil or distillate from a decompression third line and reverse order dewaxed oil or distillate from a decompression forth line, the raw material 2 comprises one or more of light alkyl benzene, heavy alkyl benzene 1# and heavy alkyl benzene 2#, a weight ratio of each ingredients in the raw material 1 is 5-95wt% and a weight ratio of each ingredients in the raw material 2 is 5-95wt%, carrying out sulfonation treatment on the mixture through SO3 gas to obtain the sulfonated product and neutralizing the sulfonated product until system pH is 7-10 through a sodium hydroxide aqueous solution.

The invention relates to preparation of a heat-conducting joint-filling material. The preparation comprises the following steps: accurately weighing 100 to 120 parts of a resin matrix, adding 25 to 30 parts of an aluminate coupling agent; adding the above substances into a mixer and carrying out stirring at a vacuum degree of -0.1 MPa for 40 to 50 min; after completion of stirring, adding 100 parts of aluminum hydroxide into a mixture obtained in the previous step and carrying out stirring at a vacuum degree of -0.1 MPa for 5 to 10 min; then adding 150 parts of the heat-conducting filler boron nitride, carrying out stirring at a vacuum degree of -0.1 MPa for 30 min and then carrying out blanking; and molding a mixture obtained in the previous step into a sheet material with a size of 5 mm and subjecting the sheet material to curing at 130 DEG C for 20 to 30 min so as to obtain the heat-conducting joint-filling material.

The invention relates to synthesis of diphenylether-formaldehyde resin. A process comprises the following steps that 80 to 90g of diphenylether-formaldehyde resin, 32 to 40g of HDI trimers, 5g of 3-ethyl-3-hydroxymethyleneoxetane, 10g of hydroxyethyl methylacrylate, 0.1g of polymerization inhibitors of 4-methoxyphenol and 0.01g of catalysts of dibutyl tin laurate are added into a three-opening flask with a temperature indicator; the temperature is raised to 80 to 90 DEG C; the temperature is controlled to be 80 to 90 DEG C; the reaction is taken for 3 to 6hours; the heating reaction is stopped, and the diphenylether-formaldehyde resin is obtained.