83 results about "Polythiocyanogen" patented technology

The invention relates to a hydroxyl-terminated polybutadiene damping rubber material. The hydroxyl-terminated polybutadiene damping rubber material comprises, by weight, 0.5-5 parts of a vulcanizing agent, 5-30 parts of hydroxyl-terminated polybutadiene, 20-100 parts of a strengthening agent, 5-20 parts of a plasticizer, 2-10 parts of a chemical antiager, 0.5-3.5 parts of a wax antiager, 2.5-13 parts of a sulfuration activator, and 0.5-8 parts of a promoter. Preferably, the hydroxyl-terminated polybutadiene damping rubber material also comprises 1-5 parts by weight of thiocyanuric acid. The invention also discloses a preparation method of the damping rubber material. The damping rubber material can be used in a damping rubber product for a vehicle, has good antifatigue performances, greatly prolongs a service life and reduces finished product use.

The invention relates to a sulfur-doped g-C3N4/C-dot porous composite photocatalyst and a preparing method and application thereof. A chemical composition of the photocatalyst comprises sulfur-doped C3N4 and C-dot nano-particles, and a microstructure of the catalyst comprises rod-shaped and porous structures. An S-C3N4 precursor prepared by mixing tripolycyanamide and trithiocyanuric acid and a C-dot prepared with the alkali-assisted ultrasound method are compositely calcined, and the S-C3N4/C-dot nanometer composite photocatalyst is prepared. By means of the sulfur-doped g-C3N4/C-dot photocatalyst prepared with the method, absorption of a visible light area can be enhanced, and transferring of photo-induced charges can be promoted; meanwhile, as the basal morphology is adjusted and controlled by the C-dot, the porous structure is remarkably formed, the specific area is increased, the preparing method is low in cost, simple in technology and environmentally friendly, and a prepared photocatalysis composite material has good application prospects when being used for treating wastewater.

The invention relates to a halogen-free flame retardant composition and application thereof. The halogen-free flame retardant composition at least comprises a component A, a component B, a component Cand a component D, wherein the component A is one or more of 2-carboxyethyl phenyl phosphinates; the component B is one or more of aluminum diethyl phosphinate, zinc diethyl phosphinate, aluminum methyl ethyl phosphinate, aluminum methyl propyl phosphinate, aluminum dipropyl phosphinate and aluminum ethyl propyl phosphinate; the component C is one or more of melamine cyanuric acid, melamine polyphosphate, melamine trithiocyanate, melamine hypophosphite and ammonium polyphosphate; and the component D is one or more of montmorillonite, kaolin, molybdenum disulfide, graphite-like carbon nitride,graphene and graphene oxide. The application process is as follows: resin, fibers and the halogen-free flame retardant composition are subjected to melt blending to prepare flame-retardant polymer materials. The halogen-free flame retardant composition disclosed by the invention is simple to prepare, low in cost, free of halogen elements, lasting in flame-retardant effect, capable of continuouslyretarding flame in the whole stage of flame development and good in application prospect.

The invention discloses a high-pressure rubber hose. The high-pressure rubber hose comprises an inner rubber layer, a frame layer and an outer rubber layer, which are tightly stacked together from inside to outside. When the inner rubber layer is prepared, various components are matched according to corresponding weight parts and then smelted in a smelting machine, after smelting, rubber is discharged under the condition of 220 degrees Centigrade, then 1.5 parts of trithiocyanuric acid and 2 parts of sulfur are added for mixing. After mixing, the rubber is extruded at the temperature of 300 degrees Centigrade to obtain the inner rubber layer; when the outer rubber layer is prepared, various components are matched according to corresponding weight parts and smelted in the smelting machine and then added with 1.8 parts of sulfur for mixing and are extruded after mixing to obtain the outer rubber layer. The high-pressure rubber hose can overcome defects of complicated structure, poor corrosion resistance, short service life and the like in the prior art and has the advantages of simple structure, high corrosion resistance and long service life.

The invention discloses an environmentally-friendly double-component high temperature-resistant conveyer belt bonding agent and a preparation method thereof. The environmentally-friendly double-component high temperature-resistant conveyer belt bonding agent comprises a component A and a component B. The component A comprises: by weight, 50 to 100 parts of chloroprene rubber, 10 to 20 parts of methacrylic acid, 0.1 to 0.3 parts of benzoyl peroxide, 0.1 to 0.2 parts of hydroquinone, 30 to 70 parts of alkyl benzoic acid resin, 2 to 10 parts of active magnesium oxide, 5 to 10 parts of zinc oxide, 10 to 20 parts of aluminum hydroxide, 200 to 300 parts of acetic ester, 200 to 300 parts of butanone, 100 to 300 parts of dimethyl carbonate, 0.3 to 0.7 parts of triethanolamine and 0.5 to 1.0 part of pigment. The component B comprises 10 to 40 parts of polyisocyanate, 1 to 5 parts of thiocyanuric acid, 50 to 150 parts of acetic ester and 0.1 to 0.3 parts of a polymerization inhibitor.

The invention provides a zinc hydroxystannate-palygorskite-trithiocyanuric acid compound smoke-suppressed fire retardant having good smoke-suppressed fire-retardant performance. The zinc hydroxystannate-palygorskite-trithiocyanuric acid compound smoke-suppressed fire retardant is prepared by compounding a zinc hydroxystannate-palygorskite clay composite (the structure and the performance refer to CN102515185A) with trithiocyanuric acid according to the mass ratio of 20:1 to 1:1. Experiments show that the compound of trithiocyanuric acid and the zinc hydroxystannate-palygorskite clay composite has a good synergetic effect; the fire retardant prepared by taking the compound as the additive has a good carbon forming effect, and therefore, the zinc hydroxystannate-palygorskite-trithiocyanuric acid compound smoke-suppressed fire retardant provided by the invention can be widely used for modifying plastics and various kinds of rubbers.

The invention relates to a method for treating waste water containing complex copper. The method comprises the following steps: adding hydrochloric acid to adjust the pH value of the waste water to 3.0-4.0; adding 20-200 ppm of sodium hypochlorite and stirring for 2-5 minutes; then, adding sodium hydroxide to adjust the pH value of the waste water to 10.5-11.5; further, adding 50-500 ppm of PAC (Poly Aluminum Chloride) and stirring for 2-5 minutes; then, adding 10-100 ppm of trithiocyanuric acid trisodium salt and stirring for 2-5 minutes; finally, adding 0.5-5 ppm of negative ions, stirring for 10-20 minutes, precipitating for 10-20 minutes, filtering, and measuring the copper content of the filtered water. The invention has the benefits that the method is low in cost and small in consumption, can be used for treating copper of different forms and copper in the complex state in water, is simple to operate, has no secondary pollution, and generates no poisonous gas; the copper removal rate reaches 99.4%.

The invention relates to the technical field of photocatalysts, in particular to a preparation method of a CuS/ZnS/g-C3N4 ternary composite photocatalyst. A CuS/ZnS/g-C3N4 ternary heterostructure is directly obtained by the preparation method of the CuS/ZnS/g-C3N4 ternary composite photocatalyst through a one-step calcination method. The preparation method comprises the following specific steps: first step: mixing a certain amount of copper chloride dehydrate, zinc chloride and trithiocyanuric acid to form a precursor mixture; and second step: uniformly grinding the mixture, putting the mixture into a tubular furnace for calcination, washing the obtained product with distilled water and anhydrous ethanol, and drying the product, thus obtaining the CuS/ZnS/g-C3N4 ternary composite photocatalyst. The steps are simple; in the photocatalytic reaction, the preparation method is relatively high in photo-induced electron and hole separation efficiency; the raw materials of the ternary composite photocatalyst are easy to obtain and low in cost; the reaction conditions are mild and cause no pollution to the environment; and the preparation method is favorable for industrial production.

The invention provides a preparation method of a carbon nitride loaded Pd-based catalyst, which comprises the following steps: A) pyrolyzing trithiocyanuric acid in a protective gas atmosphere to obtain thin-layer carbon nitride; b) dispersing the thin-layer carbon nitride in water to obtain a first turbid liquid; c) adding a Pd precursor into the first turbid liquid, and stirring to obtain a second turbid liquid; d) adding sodium hydroxide into the second turbid liquid, and stirring to obtain a third turbid liquid; and E) adding sodium borohydride into the third turbid liquid, stirring to obtain a fourth turbid liquid, and carrying out solid-liquid separation on the fourth turbid liquid to obtain the carbon nitride loaded Pd-based catalyst. Nano metal particles in the catalyst prepared bythe method are uniformly distributed on a carrier, have good interaction stability, and the catalyst shows excellent activity and selectivity for hydrogen production by formic acid decomposition. Theinvention also provides the carbon nitride-loaded Pd-based catalyst and an application of the catalyst in hydrogen production by formic acid decomposition.

The invention relates to novel rubber for an automobile exhaust pipe. The rubber is prepared from, by weight, 60-75 parts of oil-extended ethylene propylene diene monomer, 30-40 parts of non-oil-extended ethylene propylene diene monomer, 1-2 parts of trithiocyanuric acid, 4-7 parts of anti-aging agent, 7-12 parts of accelerant, 5-10 parts of N-330 carbon black, 5-10 parts of activated zinc oxide, 0.5-1 part of paraffin, 1-3 parts of stearic acid, 1.5-2.5 parts of vulcanizing agent and 10-15 parts of paraffin oil. The novel rubber for the automobile exhaust pipe has the advantages that by means of the synergistic effect of the raw materials, when the rubber is used for preparing an automobile exhaust pipe hanging ring, heat resistance of the automobile exhaust pipe hanging ring is effectively improved, and the anti-ageing performance of the automobile exhaust pipe hanging ring is also improved.

The invention relates to a method for treating high-concentration copper-containing wastewater through ph adjustment. The method comprises the following steps of: (1) firstly, adjusting the pH of the wastewater to be 11.5-12.5 by using sodium hydroxide, adding polyaluminum chloride and stirring for 2-5 min, wherein the dosage of the polyaluminum chloride is that the concentration of the polyaluminum chloride is 200 ppm; (2) then, adding trisodium thiocyanate trimer and stirring for 2-5 min, wherein the dosage of the trisodium thiocyanate trimer is that the concentration of the trisodium thiocyanate trimer is 50 ppm; and (3) finally, adding negative ions, thoroughly stirring for 10-20 min, precipitating for 10-20 min, filtering, and detecting the copper content of filtered water, wherein the dosage of the negative ions is that the concentration of the negative ions is 4 ppm. The method has the beneficial effects that the method has the advantages of low cost, low dosage, no secondary pollution, no production of odorous gases, and the like, and has a better removal effect on copper of various forms in water, and the copper removal ratio is high.

The invention relates to a preparation method of nitrogen-sulfur co-doped porous graphene by means of a supramolecular template method. According to the preparation method of the nitrogen-sulfur co-doped porous graphene by means of the supramolecular template method, graphene oxide is used as a raw material, a complex of the graphene oxide and melamine trimeric thiocyanate is obtained through supramolecular polymerization between the melamine and the trimeric thiocyanate, then the melamine trimeric thiocyanate is removed by calcination, and the nitrogen-sulfur co-doped porous graphene is prepared. According to the preparation method of the nitrogen-sulfur co-doped porous graphene by means of the supramolecular template method, compared with the prior art, a pore-forming agent or template agent is not needed to be introduced additionally, heteroatom precursors involved are all cheap industrial raw materials, so that the advantages of simple operation, low production cost and the like are achieved, the porous graphene is obtained, while nitrogen-sulfur co-doping is further achieved, and the obtained nitrogen-sulfur co-doped porous graphene has excellent electrochemical properties.

The invention discloses a visible light catalysis H2O2 synthesis catalyst as well as a preparation method and an application thereof. The visible light catalysis H2O2 synthesis catalyst is an organic polycomplexation matter formed by chromium, silver or indium ions with trithiocyanuric acid, is directly dispersed in a pure water system with alcohol as a sacrificial agent and can effectively reduce O2 to produce H2O2 under the induction action of visible lights, and each gram of catalyst can produce more than 0.20 mol of hydrogen peroxide. The preparation method of the visible light catalysis H2O2 synthesis catalyst disclosed by the invention is simple and easy to operate and raw materials are cheap, so that the preparation method disclosed by the invention is a clean, efficient and low-energy-consumption hydrogen peroxide production method applicable to industrialized popularization and application.

The invention relates to rubber for an automobile exhaust pipe lifting ring. The rubber is prepared from, by weight, 60-75 parts of ethylene propylene diene monomer, 35-45 parts of chlorosulfonated polyethylene rubber, 1-2 parts of trithiocyanuric acid, 4-7 parts of an anti-aging agent, 7-12 parts of accelerant, 5-10 parts of N-330 carbon black, 5-10 parts of activated zinc oxide, 0.5-1 part of paraffin, 1-3 parts of stearic acid, 1.5-2.5 parts of a vulcanizing agent, 1.5-3.5 parts of plasticizer and 10-15 parts of paraffin oil. The rubber has the advantages that by means of the synergistic effect among all the raw materials, the rubber effectively improves heat resistance of the automobile exhaust pipe lifting ring when used for preparing the automobile exhaust pipe lifting ring; in addition, aging resistance of the automobile exhaust pipe lifting ring is promoted.

The invention relates to a method for removing low-concentration copper-containing wastewater, and the method comprises the following steps of: (1) firstly, adding polyaluminium chloride to wastewater pH, and stirring for 2-5 minutes, wherein the addition dosage has the concentration of 30-500 ppm; (2) then, adding trithiocyanuric acid trisodium salt to wastewater obtained through the final treatment of the step (1), and stirring for 2-5 minutes, wherein the addition dosage has the concentration of 10-100 ppm; and (3) finally, adding anions to the wastewater obtained through the final treatment of the step (2), sufficiently stirring for 10-20 minutes, depositing, filtering, and detecting, wherein the addition dosage has the concentration of 0.5-5 ppm. The method disclosed by the invention has the advantages of better removal effect on copper with various forms in a water body and high copper removal ratio.

The invention discloses an efficient environment-friendly heavy metal treatment agent, a preparation method and application thereof, and belongs to the technical field of environmental agent materialsand environmental engineering. The efficient environment-friendly heavy metal treatment agent is prepared from the following raw materials in percentage by weight: 5-10% of a composite nano material,2-10% of trisodium thiocyanurate, 3-5% of an inorganic composite alkali, 10-20% of bis[2-(2-hydroxyethyl)-1-methyl-2,1-ethylene)]disulfide bis[N-[(4-amino-2-methyl-5-pyrimidinyl]methyl]formamide, 5-15% of piperazine-1,4-dithiocarboxylic acid potassium salt and 40-75% of water. According to the invention, the efficient environment-friendly heavy metal treatment agent has good effects of removing metals such as cd, cr, co, Hg, Ge, Mn, Ni, Pb, Zn and the like, reducing toxicity, settling and separating, and being convenient to recycle; in water treatment, by adding a composite nano material, heavy metals are removed while the flocculation speed of wastewater is accelerated, and COD, ammonia nitrogen, phosphorus and other substances are removed at the same time; and the agent can be used forremoval treatment and recovery of heavy metals in a water body, can also be used for harmless treatment of fly ash generated by incineration of garbage containing heavy metals, and is environment-friendly and efficient.

The invention relates to a treatment method of high concentration waste water containing cadmium, which comprises the following steps: at first, adding sodium hydroxide, and adjusting the pH of the waste water to be 7.5 to 8.5; then adding 50 to 500 ppm PAC, and stirring for 2 to 5 minutes; then adding 10 to 100 ppm trithiocyanuric acid trisodium salt, and stirring for 2 to 5 minutes; finally adding 0.5 to 5 ppm anions, stirring for 10 to 20 minutes, precipitating for 10 to 20 minutes, filtering, and measuring the cadmium content in the filtered water. The treatment method has the benefits that only sodium hydroxide, PAC, trithiocyanuric acid trisodium and the anions are needed to be added mainly, the cadmium content in the water body can be reduced by 99.5%, the cost is low, the dose is small, the secondary pollution can be avoided, the cost performance is high, and meanwhile the removal effect on cadmium in various modalities in the water body is very good.

The invention discloses a preparation method of a cigarette end biochar material for selectively adsorbing ammonia in smoke, which comprises the following steps: cleaning waste cigarette ends, addinginto a sodium hydroxide water solution, stirring and filtering the mixture, and drying the material to obtain a solid sample for later use; putting the solid sample prepared in the previous step together with a certain amount of trithiocyanuric acid and CaCl2 into a ball mill to be milled into mixed powder; transferring the mixed powder prepared in the previous step into a tubular furnace, calcining under the protection of inert gas, naturally cooling after calcining is completed, then washing the material with a mixed solution of ultrapure water and ethanol for multiple times, and drying thematerial to obtain the sulfur-calcium co-doped biochar material. The sulfur-calcium co-doped biochar material prepared by the method has many active sites, large specific surface area and good adsorption effect on ammonia, and waste cigarette butts can also generate more oxygen-containing functional groups in the calcining process; the functional groups can generate electrostatic adsorption, ion exchange and hydrogen bond attraction, so that the adsorption effect of the sulfur-calcium double-doped biochar material on ammonia is greatly improved.

The invention discloses a preparation method of metal sulfide. The preparation method comprises the following steps: 1) dissolving trithiocyanuric acid in dimethyl formamide to obtain a solution A; 2)dissolving metal acetate in DMF to obtain a solution B; 3) dropwise adding the solution A into the solution B under ultrasonic waves or stirring to obtain a precipitate; and 4) carrying out a heat treatment on the precipitate to obtain corresponding metal sulfide. The general formula of the chemical components of the metal sulfide is MxSy, M can be any one of Co, Ni, Cu, Zn, Ag and Cd or combination of several of Co, Ni, Cu, Zn, Ag and Cd in any proportion, and S is sulfur. Test results show that prepared metal sulfide is an aggregate of nano/submicron particles, and is high in purity and good in crystallinity. The disclosed preparation method is easy to operate, low in time consumption and high in yield, takes trithiocyanuric acid as a sulfur source, and has the characteristics of environmental friendliness and wide source.

The invention discloses a method for determining non-edible substance trithiocyanuric acid trisodium salt (TMT) in wheat flour and additives thereof by ultra-high performance liquid chromatography-tandem mass spectrometry. The method comprises the steps of extracting total trithiocyanuric acid trisodium salt in the sample by using an acetonitrile-formic acid/ammonium formate buffer solution system; purifying the supernatant by an Oasis PRIME HLB pass-type solid-phase extraction column, conducting C18 chromatographic column separation, performing gradient elution by adopting a methanol-acidified ammonium formate mobile phase, carrying out detection in a triple quadrupole mass spectrum electrospray multi-reaction monitoring mode (MRM), and conducting quantification by an external standard method. The optimized acetonitrile-formic acid/ammonium formate buffer solution extraction system not only can efficiently extract different forms of TMT, but also can well disperse different matrix samples, and overcomes the problem that the wheat flour improver is easy to gelatinize in extraction. The method is simple, convenient, efficient, good in accuracy, high in interference resistance and suitable for accurate qualitative and quantitative analysis of the total amount of the trace non-edible substance TMT in the wheat flour and the treating agent of the wheat flour.

The invention relates to a method for removing nickel from high-concentration nickel-containing wastewater. The method comprises the following steps of: firstly, adjusting the pH of the wastewater to be 9.5-10.5 by using sodium hydroxide, adding polyaluminum chloride and stirring for 2-5 min, wherein the dosage of the polyaluminum chloride is that the concentration of the polyaluminum chloride is 50-500 ppm; then, adding trisodium thiocyanate trimer and stirring for 2-5 min, wherein the dosage of the trisodium thiocyanate trimer is that the concentration of the trisodium thiocyanate trimer is 10-100 ppm; and finally, adding negative ions, thoroughly stirring for 10-20 min, precipitating, filtering and detecting, wherein the dosage of the negative ions is that the concentration of the negative ions is 0.5-5 ppm. The method has the beneficial effects that the method has the advantages of low cost, low dosage, no secondary pollution, no production of odorous gases, and the like, and has a better removal effect on nickel of various forms in water, and the nickel removal ratio is high.

The invention belongs to the technical field of fluorescence analysis, and specifically relates to an AgNCs@APAP fluorescent probe and a preparation method thereof, and an application of the AgNCs@APAP fluorescent probe in determination of Hg(II). The AgNCs@APAP fluorescent probe is prepared through the following main steps: weighing a paracetamol (APAP) solution (7 mL, 50 mM), placing the paracetamol solution into a jacketed beaker with a volume of 50 mL, adding an AgNO3 solution (0.3 mL, 0.1 M), then adding water until a mixed solution in the jacketed beaker is 10 mL, and carrying out a light-shielded reaction under magnetic stirring at 55 DEG C for 10 h; and carrying out filtering through a hydrophilic PTFE needle type filter with a pore size of 0.45 [mu]m, and carrying out dialysis through a dialysis bag with a molecular weight of 1 kDa. The fluorescent probe provided by the invention has the advantages of simple synthetic steps, mild reaction conditions, high fluorescence quantumyield and applicability to long-term storage. A system composed of trithiocyanuric acid (TCY), a BR buffer solution (a pH value is equal to 10) and the AgNCs@APAP fluorescent probe is established fordetermination of the Hg(II), and is successfully used for determination of the Hg(II) in a water sample.

The invention relates to a method for treating high-concentration nickel-containing wastewater by adjusting the pH value. The method comprises the following steps of: (1) adjusting the pH value of the wastewater to 7.5-8.5 by using sodium hydroxide, adding aluminium polychlorid, and stirring for 2-5 minutes, wherein the concentration of the added aluminium polychlorid is 400ppm; (2) adding sodium tripolythiocyanate, and stirring for 2-5 minutes, wherein the concentration of the added sodium tripolythiocyanate is 80ppm; and (3) adding an anion, stirring fully for 10-20 minutes, precipitating for 10-20 minutes, filtering and finally detecting the content of nickel in the wastewater, wherein the concentration of the added anion is 5ppm. By finding out the optimum pH value of the wastewater to remove nickel, the addition amount of drugs can be reduced, resources can be saved, and a better nickel removal effect can be achieved.