32 results about "Structural Modifier" patented technology

This invention is directed to structurally-modified water-soluble polymers prepared by initiating polymerization of an aqueous solution of monomers under free radical polymerization conditions to form a polymer solution and adding at least one structural modifier to the polymer solution after at least 30 % polymerization of the monomers has occurred, and to use of the water-soluble cross-linked polymers as flocculating agents.

Granules of graphene oxide may be produced from a dispersion of nanoscale graphene oxide sheets by a spray drying method. Such granules have a three-dimensional corrugated morphology. The complexity of the corrugations, and the size distribution of the granules can be varied through selection of the spray-drying equipment used, and variation of the composition of the dispersion and the spray-drying parameters. Structural modifiers may be included in the graphene oxide dispersion to control the ultimate morphology of the granules. The granules of graphene oxide may be thermally reduced at a moderate temperature of 220° C. to increase the granules' electrical conductivity. The reduced granules may be used to fabricate electrodes for supercapacitors. The power and energy density of such an electrode material is comparable to those of conventional/commercial activated carbon-based electrodes.

The related composite poly-soap self-repair bearing lubricating grease comprises the basic liquid, composite calcium sulfonate, composite Ca-Li-base thickener, non-oxidizing anti-corrosion additive, metal deactivator, tungsten disulfide extreme pressure additive, wear-well additive, self-repair additive, and structural modifier; has well anti-oxidation ability and bearing capacity, can repair wore part on condition of extreme pressure and high temperature to supply the silver-plating lacking on bearing radial surface effectively, prolongs bearing service time on maximum limit, and has special application in oil drilling exploration.

Cyanate ester shape memory polymers (SMP). The polymers are preferably formed via reaction of a multifunctional cyanate ester and a mono functional cyanate ester and exist, in one inventive aspect, in the form of a cross-linked thermoset network. Optional catalysts and structural modifiers may be added to the reaction moieties to help control the glass transition temperature of the resulting SMP to greater than 0° C., preferably from about 150° C.-300° C.

The invention relates to a flame retardant expanded polystyrene particle and a preparation method thereof. The flame retardant expanded polystyrene particle of the invention uses styrene, desalted water, calcium phosphate, benzoyl peroxide, dicumyl peroxide, hexabromocyclododecane, structural modifier, infrared reflection agent, foaming agent and the like as raw materials. The preparation method comprises the following steps: mixing the raw materials, heating to react, and performing filtration and other steps. The flame retardant expanded polystyrene particle has higher burning class and good fireproof performance. The flame retardant expanded polystyrene particle is suitable for the external wall thermal insulations of all kinds of buildings.

The invention discloses a solidification and stabilization method for a hazardous waste containing toxic organic compounds, which belongs to the hazardous waste treatment technical field of environment protection. According to a dry weight ratio, 30 to 60 percent of the hazardous waste containing toxic organic compounds, 0.5 to 10 percent of an additive, 30 to 60 percent of inorganic cementing agent and curing agent are added into an agitator and are stirred by adding water, meanwhile, a gas internal circulation device is started, the gas in the agitator is adsorbed and purified by a gas adsorbing and purifying device, and then part of the gas is fed back into the agitator; after being evenly mixed and stirred materials are discharged, solidified and fed into a maintenance house, and the solidification and stabilization of the hazardous waste containing toxic organic compounds is finished. The additive comprises an adsorbent with adsorbing effect and a structural modifier which can improve the structural performance of a product, such as activated carbon, water glass, calcium chloride, etc. The inorganic cementing agent and curing agent refers to hydraulicity cementing material. The solidification rate of the invention can reach more than 90 percent; and gas circulation can reduce polluted gas discharging, thus being capable of effectively reducing the occurrence of secondary pollution.

The invention discloses terpolymer rubber with medium/high side group content and a preparation method and applications thereof. The invention relates to a method which uses a bistetrahydrofuran compound as the structural modifier to synthesize monovinylarene/conjugated diene 1/conjugated diene 2 terpolymer rubber through solution polymerization, the monovinylarene/conjugated diene 1/conjugated diene 2 terpolymer rubber synthesized by the method and products based on the copolymer rubber, such as tires. The copolymer rubber synthesized by the method has good wet-skid resistance and low rolling resistance.

The invention discloses a comprehensive water saving regulation method for fruit trees and vegetables comprising the following steps: soil water retaining agent is applied to the root zone soil of planted crops; plant antitranspirant is sprayed on the foliar of the crops; soil structural modifier is applied to the near surface top soil at the root zone of the planted crops. The method has the advantages that, the embodiment of the invention takes soil and crops as a whole; through combined application of the three agents of soil water retaining agent, plant antitranspirant and soil structural modifier, stereo and comprehensive regulation of the water status of soil and crops can be realized, and field water utilization efficiently is improved.

The invention discloses a method for synthesizing star-shaped solution polymerized butadiene-styrene rubber by using modified initiator, belonging to the technical field of rubber. The method comprises the following steps: synthesizing a compound I; using the compound I as initiator and Lewis base as structural modifier and randomizer to perform the random copolymerization of butadiene and styrene in hydrocarbon solvent under the protection of nitrogen; and after the copolymerization reaction, adding coupling agent to perform c oupling reaction, stopping the reaction, and performing condensation to obtain the modified star-shaped solution polymerized butadiene-styrene rubber. One end of the rubber has a star-shaped structure through coupling modification, thus the number of free ends can be greatly reduced; the other end has a benzene ring brought by the initiator, thus the affinity to carbon black can be improved; and compared with the unmodified solution polymerized butadiene-styrene rubber, the solution polymerized butadiene-styrene rubber prepared by the method has low rolling resistance, good wet skid resistance and excellent physical and mechanical properties.

The invention relates to ultrahigh-temperature-resistant composite multi-soap-base self-restored bearing lubricating grease and a preparation method thereof. The lubricating grease is prepared by mixing composite synthetic base liquid, a composite thickening agent, a high temperature antioxidant additive, an anticorrosive metal passivation agent, an inertia extreme-pressure additive, a self-restoration additive and a structural modifier. On the basis of the patents ZL200510120518.X and ZL201210033794.2, the base liquid, the thickening agent, the extreme-pressure additive, an anti-abraison additive and the like are optimized, the obtained lubricating grease not only can satisfy the extreme pressure, high temperature, abrasion resistant, self-restored lubrication requirements of a roller bit bearing, but also can keep the performance of product unchanged in an environment with the temperature higher than 200 DEG C, is capable of preventing the failure of the bit bearing, is particularly suitable for being used in the roller bit bearing of geothermal wells and deep stratums in the petroleum geographic exploitation field and has important significance on enlarging the application temperature range of the roller bit bearing.

The invention relates to the fields of biological functional materials and nanotechnologies and particularly relates to a novel amphiphilic polymer nano medicine carrying micelle which is proper in particle size distribution range, stable in encapsulation rate and medicine carrying rate, high in biological safety and capable of increasing bioavailability of ursolic acid and a structural modifier thereof. The technical scheme of the invention provides a medicine carrying micelle capable of increasing bioavailability of ursolic acid and a structural modifier thereof. The medicine carrying micelle is characterized in that the preparation method comprises the following steps of 1, synthesizing PLGA-PEG-PLGA (poly(lactic-co-glycolic acid)-polyethylene glycol-poly(lactic-co-glycolic acid)) by using a ring opening polymerization method; 2, simultaneously dissolving an insoluble drug and a triblock copolymer into an organic solvent to prepare an oil phase; 3, dropwise adding the oil phase into a water phase stirred at a high speed; 4, stirring until the oil phase is completely volatilized, and filtering a membrane in the solution to obtain a medicine carrying nanoparticle contained ultrapure water solution; freezing and drying to obtain the medicine carrying micelles.

The invention provides a method for synthesizing a sulfonic acid resin catalyst used for polyoxymethylene dimethyl ethers efficiently, and relates to a method for synthesizing a resin catalyst. The method comprises: a modified method for synthesizing sulfonic acid resin catalyst used for polyoxymethylene dimethyl ethers efficiently by using methylal and trioxymethylene as raw materials. The polar organic alcohol solvent is selected to heat the sulfonic acid resin catalyst for 0.5-20 hours in the presence of CO under 0.1-20.0 MPa at 50-200 DEG C, and the polar organic alcohol solvent used as a water-carrying agent and a pore-enlarging agent works together with a structural modifier of sulfonic acid resin. The method uses the polar organic alcohol solvent to heat the sulfonated polystyrene resin catalyst, and the polar organic alcohol solvent used as the water-carrying agent and the pore-enlarging agent works together with the structural modifier of sulfonic acid resin. The polar organic alcohol solvent shows good reaction activity between methylal and trioxymethylene and good selectivity of product DMM<3-8>.

The invention relates to lubricating grease and a preparation method thereof. Based on the total weight of the lubricating grease, the lubricating grease contains the following components: 64wt%-95wt%of lubricating base oil, 4wt%-35wt% of a thickener, 0.1wt%-10wt% of a structural modifier and 0.1wt%-10wt% of an antioxidant, and the structure improver is at least one selected from silica gel powder, bentonite and carbon black. The lubricating grease has excellent high-temperature performance, is drip-free, has excellent water resistance, colloid stability, rust prevention and corrosion resistance, and can meet lubricating requirements of high-temperature working conditions of wateriness and humidity.

The invention provides branched type functionalized solution polymerized styrene-butadiene rubber and a preparation method thereof. A molecular chain of the prepared branched type functionalized solution polymerized styrene-butadiene rubber contains siloxy having good compatibility with white carbon black, a structural diagram is shown as (a), and the siloxane branched chain content is 0.1%-8% ofthe solution polymerized styrene-butadiene rubber by weight. The preparation method of the branched type functionalized solution polymerized styrene-butadiene rubber comprises the steps that organolithium is used as an initiator, a structural modifier is added, so that butadiene and styrene generate copolymerization, when the monomer conversion rate of the copolymerization is close to 100%, long-chain hydrosiloxane is then added, a beta-selective hydrosilylation catalyst and an addition agent are added for hydrosilylation, the reaction temperature is 60-120 DEG C, the reaction time is 30-120 minutes, after the reaction is completed, the branched type functionalized solution polymerized styrene-butadiene rubber is obtained through termination, coagulation and drying. The abrasion performance and wetting resistance of the solution polymerized styrene-butadiene rubber can be improved, and rolling resistance is lowered.

The invention discloses a structural modifier of 8-methoxypsoralen as well as a preparation method and application of the . The structural modifier of the 8-methoxypsoralen provided by the invention is a compound B20 shown as a formula 1 or a compound A10 shown as a formula 2. The bacteriostatic activity of the compound B20 for enterotoxigenic escherichia coli at the concentration of 64 mu g/mL is2.3 times of that of the 8-methoxypsoralen; the bacteriostatic activity of the compound A10 for enterotoxigenic escherichia coli at the concentration of 64 mu g/mL is 2.4 times of the 8-methoxypsoralen. The compound B20 and the compound A10 can be applied to the preparation of a medicament for treating and/or preventing piglet diarrhea. The formula 1 and the formula 2 are shown in the description.

The invention relates to lubricating grease for a blaster head bearing of a shot blasting machine. The lubricating grease comprises base oil, a thickening agent, a structural modifier, an extreme-pressure anti-wear agent and an antioxidant. The lubricating grease is prepared according to the following steps: adding the thickening agent and 40-60% of the base oil into a reaction kettle, carrying out stirring and heating to 210-220 DEG C, keeping the temperature for 8-12 minutes, carrying out cooling to 160-180 DEG C, adding the antioxidant, carrying out cooling to 130-150 DEG C, adding the extreme-pressure anti-wear agent, adding 10-30% of the base oil, carrying out cooling, continuing to carry out stirring, adding the remaining base oil, carrying out stirring and cooling to 90 DEG C or below, adding the structure improver, and uniformly carrying out mixing by stirring. The produced lubricating grease has a relatively high melting point, good structural stability and good shearing resistance, and the consistency variation of the lubricating grease in a strong shearing environment in the bearing is small, so that the adhesion of the lubricating grease is guaranteed. The condensationpoint of the base oil is low, the cone penetration degree of the lubricating grease is 290-310, and the low-temperature pumping performance of the lubricating grease is ensured. The lubricating greaseis suitable for lubricating requirements of the working conditions of the blaster head bearing of the shot blasting machine.