64 results about "Calcium hypophosphite" patented technology

The invention discloses a high-rigidity steel belt reinforced polyethylene spiral corrugated pipe and a preparation method thereof. The high-rigidity steel belt reinforced polyethylene spiral corrugated pipe comprises an inner polyethylene pipe, formed steel belts and an outer polyethylene pipe. The formed steel belts are wound around the outer surface of the inner polyethylene pipe at equal intervals and wrapped by the outer polyethylene pipe. The inner polyethylene pipe and the outer polyethylene pipe respectively comprise, by weight, 80-86 parts of high density polyethylene, 8-10 parts of magnesium hydrate, 4-6 parts of compatilizers, 3-4 parts of dibutyltin dilaurate, 2-4 parts of calcium hypophosphite, 2-3 parts of polyoxyethylene, 5-6 parts of polyethylene-graft-maleic anhydride, 7-9 parts of alkyl phosphoric acid, 3-6 parts of superfine talcum powder, 5-7 parts of lustering agents for plastic, 6-8 parts of aluminium-zirconium coupling agents, 4-5 parts of vinyltriethoxysilane, 4-7 parts of beta (3,5 di-tert-butyl-4-hydroxycyclohexyl phenyl ketone) propionic acid octadecyl ester, 5-8 parts of color master batches and 10-12 parts of assistant master batches. According to the high-rigidity steel belt reinforced polyethylene spiral corrugated pipe and the preparation method of the high-rigidity steel belt reinforced polyethylene spiral corrugated pipe, the technology is simple, the production cost is low, pipes are not likely to be fractured, adhesive bonding is firm, the layering problem is not likely to be produced, and using is safe and reliable.

The invention discloses a method for producing ceramics through purified granite powder waste. 10-35 parts by weight of zircon sand, 5-30 parts by weight of high-whiteness potassium-sodium feldspar powder, 3-25 parts of kaolin, 5-25 parts of pyrophyllite, 3-25 parts of gypsum, 3-20 parts of nutshell powder, 2-20 parts of iron mine milltailings, 1-15 parts of zinc oxide, 1-15 parts of magnesium oxide, 1-15 parts of barium oxide, 1-10 parts of pentalyn, 1-10 parts of ammonium citrate and 1-10 parts of calcium hypophosphite are weighed; kaolin, pyrophyllite and gypsum are taken to be mixed and crushed, and wet ball milling, drying, calcining, water quenching, drying and crushing are carried out; zircon sand, high-whiteness potassium-sodium feldspar powder and iron mine milltailings are taken to be mixed and crushed, and size mixing, microwave treatment, size mixing, ultrasonic treatment and drying are carried out; the prepared powder and the remaining raw materials are stirred, mixed, subjected to compression moulding and sintered, and the ceramics are obtained. The ceramics have the very prominent mechanical property, the production cost is reduced, the service life is prolonged, and the method is widely applied to producing whiteware, domestic ceramics and craft ceramics.

The invention discloses an anti-fatigue PVC (polyvinyl chloride) cable jacket material and a preparation method thereof. The anti-fatigue PVC cable jacket material is prepared from the following raw materials in parts by weight: 42-56 parts of SG-4 type polyvinyl chloride, 24-38 parts of polyhydroxyethyl methylacrylate, 16-24 parts of acrylic rubber, 11-17 parts of vulcanic ash, 10-15 parts of polypropylene glycol adipate, 2-3 parts of calcium stearate, 2-3 parts of barium stearate, 3-5 parts of pentaerythritol ester monooleate, 2.5-4.5 parts of hexadecyl palmitate, 10-15 parts of magnesia, 5-10 parts of carbon nanofiber, 13-19 parts of diethylene glycol dibenzoate, 10-15 parts of calcium hypophosphite, 2-4 parts of hydrogenated terphenyl, 3-5 parts of dimethylpropane carboxylic ether, 6-12 parts of hexamethylphosphoric triamide, 1.5-2.5 parts of 1,1-di(4-hydroxyphenyl)cyclohexane and 15-20 parts of a flame retardant. The cable jacket material disclosed by the invention is good in fatigue resistance, cannot generate cracks and ruptures after 50-100 thousands of times of repeated bending, has characteristics of excellent heat resistance, ageing resistance, chemical corrosion resistance, wear resistance and the like, and is long in service life and wide in application range.

The invention relates to a method for joint production of hypophosphite of calcium, magnesium and aluminum. The method provided by the invention employs sodium hypophosphite, a calcium salt, and a magnesium salt to carry out double decomposition reaction to prepare calcium hypophosphite and magnesium hypophosphite, and avoids the harm of using hypophosphorous acid as the reactant, also gives consideration to the technological shortcoming that after preparation of calcium hypophosphite and magnesium hypophosphite, a lot of hypophosphite still exists in waste liquid and cannot be completely extracted, after preparation of calcium hypophosphite and magnesium hypophosphite, a joint production technique is employed for the first time to prepare hypophosphite of aluminum. The preparation method has the advantages of mild reaction conditions, little pollution, pure product, high utilization rate of hypophosphite ions, high comprehensive yield, greatly reduced cost, and simple and practicable process route, and is convenient for mass production.

The invention discloses a low-smoke halogen-free flame-retardant crack-resistant cable material and a preparation method thereof. The low-smoke halogen-free flame-retardant crack-resistant cable material is prepared from the following raw materials in parts by weight: 65-75 parts of high-density polyethylene, 30-40 parts of ethylene-vinyl acetate copolymer, 7-9 parts of phenyl alkyl sulfonate, 4-6 parts of diethanolamine borate, 3-5 parts of magnesium dimethyl acrylate, 8-10 parts of magnesium hydroxide, 40-50 parts of tolyl diphenyl phosphate, 4-7 parts of 3-aminopropyltriethoxy silane, 7-9 parts of trimethylsilane-base cage-type polysilsesquioxane, 6-8 parts of organic antimony stabilizer, 5-7 parts of p-phenylenediamine, 30-40 parts of nano colemanite, 8-10 parts of Ome mineral fiber, 8-10 parts of hexachlorocyclotriphosphonitrile, 6-8 parts of carnauba wax, 10-12 parts of polyarylether ether nitrile, 7-8 parts of zirconium carbide, 5-8 parts of fibrous plaster, 4-6 parts of calcium hypophosphite and 8-12 parts of high-wear-resistance carbon black. The cable material has the advantages of favorable flame-retardant effect, less fuming and favorable cracking resistance.

The invention discloses a rust remover. The rust remover is characterized in that the rust remover comprises the following raw materials in parts by mass: 2-13 parts by mass of sodium silicate, 12-20 parts by mass of phosphoric acid, 1-10 parts by mass of lauryl sodium sulfate, 14-35 parts by mass of calcium hypophosphite, 2-15 parts by mass of potassium tetraborate and 200-400 parts by mass of water. The rust remover provided by the invention cannot cause harm to steel.

The invention discloses a novel domestic sewage treatment agent, which comprises the following raw materials in parts by weight: 3-10 parts of polyacrylamide, 4-6 parts of alkanolamide, 30-60 parts of aluminum silicate, and 15-15 parts of ferric chloride 25 parts, 6-9 parts of bentonite, 3-6 parts of diatomite, 15-25 parts of ferric chloride, 2-4 parts of fly ash, 20-40 parts of adsorbate, 15-25 parts of plant fiber, calcium hypophosphite 3‑8 parts, 3‑9 parts of Sophora flavescens, 7‑15 parts of polyaspartic acid. Adding fly ash to the sewage treatment agent of the present invention increases the ability to aggregate with organic pollutants in sewage, so that the flocculation ability is greatly enhanced, and the addition of plant fibers makes the condensed organic matter not condensed under the conditions of high sewage flow rate and high temperature. Comes apart easily.

The invention discloses a fireproof flame-retardant aerocrete building block and a preparation method thereof. The fireproof flame-retardant aerocrete building block is prepared from the following raw materials in parts by weight: 50-70 parts of potash feldspar, 16-22 parts of iron aluminate cement, 11-17 parts of calcium hypophosphite, 15-20 parts of boehmite, 10-15 parts of borax, 18-24 parts of sericite, 22-28 parts of chalk powder, 16-22 parts of coconut shell flour, 4-7 parts of polyethyleneimine, 2-4 parts of sodium wolframate, 1-2 parts of triethanolamine, 3-5 parts of konjaku flour, 1.5-2.5 parts of modified aluminum powder, 2.5-4.5 parts of sodium polystyrene sulfonate and 3-5 parts of calcium carbide powder. The aerocrete building block has excellent flame retardancy and high fire resistance, and the flame retardancy grade reaches Grade A; and the aerocrete building block has the advantages of high strength, favorable heat resistance, favorable thermal-insulation property, favorable sound-insulation effect, aging resistance, seepage resistance, crack resistance, earthquake resistance, corrosion resistance and the like.

The invention discloses a preparation method of calcium phosphite. The preparation method is characterized in that the calcium phosphite is prepared from phosphorous acid, calcium chloride and ammonium hydroxide through reaction, wherein a reaction equation is H3PO3+CaCl2+2NH3.H2O=CaHPO3.H2O+2NH4Cl+H2O, wherein the mol ratio of the phosphorous acid to the calcium chloride to the ammonium hydroxide is 1:1:(2.0-2.1), the mass concentration of the phosphorous acid is 40-60 percent, the mass concentration of the calcium chloride is 40-50 percent and the mass concentration of the ammonium hydroxide is 10-30 percent. The preparation method disclosed by the invention is simple, easy to operate, lower in requirements of reaction conditions, high in purity of the calcium hypophosphite, suitable for industrialized production, and free from generating three wastes.

The invention discloses a copper plating technology of hardware. The technology comprises following steps that S1, the hardware is subjected to alkali washing, oil contamination is removed, after acidpickling, oxide on the surface of the hardware is removed, the hardware is heated and dried, and gas remaining on the surface of the hardware in the acid pickling process can be exhausted; S2, activating treatment is carried out; S3, washing is carried out; fourthly, electroplating is carried out, wherein electrolytic copper serves as an anode, the hardware serves as a cathode, the electrolytic copper and the hardware are put into an electrolytic cell to be electroplated, an electroplating electrolyte solution contains 40 to 60g/L of CuSO4.5H2O, 80 to 100 mL/L of glyoxylic acid, 50 to 60 g/Lof calcium hypophosphite, 20 to 40 g/L of nickel chloride, 50 to 80 g/L of boric acid, and 0.5 to 0.8 g/L of 1,4-butynediol. According to the copper plating technology of the hardware, virulent chemical medicines are not needed, health of a worker is ensured, and the technology is green and environment-friendly.

The invention discloses a preparation method of light-colored rosin glyceride, belonging to the technical field of deep processing of rosin. The preparation method comprises the following steps: putting zeolite into a lead nitrate solution, soaking, then taking out, firstly baking until the water content is 20-30%, then roasting at 300-450 DEG C, and cooling to obtain a substance A for later use; putting rosin into a reaction kettle, controlling the air intake quantity of nitrogen, heating and melting, adding the substance A, rising temperature and then performing heat-preservation reaction 1; adding glycerin, zinc oxide, sodium thiosulfate and calcium hypophosphite, firstly performing heat-preservation reaction at 200-220 DEG C, then rising the temperature to 270-280 DEG C and performing heat-preservation reaction; and performing vacuum pumping to remove low-boiling-point substances, cooling, and discharging material to obtain the light-colored rosin glyceride. According to the preparation method disclosed by the invention, oxidation of rosin is furthest reduced so as to prepare the light-colored rosin glyceride with very light colors.

The invention discloses an environment-friendly antistatic noise-reducing coating for a machine room and a preparation method thereof. The environment-friendly antistatic noise-reducing coating is characterized by comprising the following raw materials in parts by weight: 2-3 parts of ammonium polyphosphate, 3-5 parts of iron powder, 1-2 parts of polyvinyl alcohol, 2-3 parts of mica powder, 1-2 parts of chlorothalonil, 2-4 parts of waterborne polyamide, 2-3 parts of methyl ethyl ketoxime, 1-2 parts of sodium alkyl naphthalene sulfonate, 0.2-0.4 part of dimethyl silicone oil, 2-3 parts of polyethylene wax emulsion, 5-7 parts of talcum powder, 2-3 parts of calcium hypophosphite, 2-3 parts of monoalkyl ether phosphate triethanolamine salt, 2-3 parts of propanediol butyl ether, 27-32 parts of organic silicone emulsion, 25-30 parts of pure acrylic emulsion, 16-20 parts of deionized water and 4-7 parts of aids. According to the coating disclosed by the invention, the preparation process is simple in flow, the reaction time is effectively shortened, the coating is stable in performance, good in economic benefits, environment-friendly, green and pollution-free, water serves as a diluent, the cured coating is high in hardness, high in wear resistance and high in glossiness, and the coating has the characteristics of water resistance, solvent resistance, noise reduction, antistatic property, rust prevention and the like and is wide in application range and simple and convenient to coat and clean.

The invention discloses a preparation method of pale rosin ester, belonging to the technical field of deep processing of rosin. The method comprises the following steps: putting rosin in a reaction kettle, controlling the nitrogen gas input, and heating to 200-220 DEG C to carry out thermal insulation reaction; and adding polyalcohol, zinc oxide, sodium thiosulfate and calcium hypophosphite, carrying out thermal insulation reaction at 200-220 DEG C, heating to 270-280 DEG C, carrying out thermal insulation reaction, vacuumizing to remove low-boiling-point substances, cooling, and discharging to obtain the pale rosin ester. By maximally lowering the oxidation of rosin, the color of the prepared pale rosin ester is very light.

The invention discloses a strong rust remover. The strong rust remover is prepared from the following raw materials in parts by volume: 15-20 parts of sulfamic acid, 15-20 parts of boric acid, 2-13 parts of sodium silicate, 12-20 parts of phosphoric acid, 1-10 parts of sodium dodecyl sulfate, 20-25 parts of calcium hypophosphite, 2-15 parts of potassium tetraborate and 400-500 parts of deionized water. The strong rust remover has very strong decontamination ability and erosion ability, and can quickly penetrate into fastened threaded connectors to corrode rust so as to play a loosening role.

The invention discloses a process for phosphating highway guardrails by adopting a room-temperature multi-functional phosphating liquid. The phosphating liquid adopted in the process comprises the composition: 135-145 g/L of a 85% phosphoric acid, 35-45 g/L of zinc oxide, 30-40 g/L of magnesium oxide, 20-24 g/L of calcium hypophosphite, 8-12 g/L of triethanolamine, 3-5 g/L of sodium nitrite, 5-7 g/L of sodium fluoride, 2-4 g/L of sodium chlorate, 2.5-3.5 g/L of citric acid, 1.5-2.5 g/L of ammonium molybdate, 5-7 g/L of peregal, 6.5-7.5 g/L of OP-10, and the balance water. The process comprises the steps: preparing the phosphating liquid, adjusting the pH value to 3.0-4.0 by ammonium acetate, making the temperature be 15-40 DEG C, then placing highway guardrail blank pieces into the phosphating liquid, arranging a stirrer in a phosphating tank to make the phosphating liquid flowing, controlling the phosphating processing time to be 20-30 minutes, taking out, and then air-drying.

The invention discloses a preparation technology of a normal-temperature multifunctional phosphatization liquid for highway guardrails. The preparation technology comprises the following steps: 1, uniformly mixing 135-145g/L of phosphoric acid and citric acid in an acid resistant container according to weight percentages; 2, slowly adding 35-45g/L of pasty zinc oxide while stirring, wherein the pasty zinc oxide is obtained through blending zinc oxide with water; 3, slowly adding 30-40g/L of pasty magnesium oxide while stirring, wherein the pasty magnesium oxide is obtained through blending magnesium oxide with water; 4, adding 20-24g/L of calcium hypophosphite, 8-12g/L of triethanolamine, 3-5g/L of sodium nitrite, 5-7g/L of sodium fluoride, 2-4g/L of sodium chlorate, 2.5-3.5g/L of citric acid, 1.5-2.5g/L of ammonium molybdate, 5-7g/L of peregal, 6.5-7.5g/L of OP-10 and the balance of water, and stirring until complete dissolving; and 4, adjusting the pH value of the obtained solution to 3.0-4.0 by acetic acid.

The invention discloses a method for determining arsenic content by using a turbidimetry method. The method comprises the following steps: weighing samples; pretreating samples; measuring a sample solution; adding an auxiliary solution; carrying out colorimetric tube turbidity treatment, standard color primary preparation, primary turbidity treatment, standard color secondary preparation and secondary turbidity treatment, and calculating the arsenic content of the samples. The method disclosed by the invention is scientific and reasonable, and is safe and convenient to use; by adopting secondary turbidity and selecting appropriate concentration of hydrochloric acid, the adequacy of reduction reaction is ensured; the precipitation of the salt is reduced so as to further improve the accuracyof the arsenic content and facilitate clearer calculation of the arsenic content in the samples; in addition, a white baffle plate is added in the turbidity process to serve as an observation background, so that the observation is more accurate during visual turbidity and the influence of subjective factors of testers on observation results is reduced. By adopting calcium hypophosphite, the phenomena of reaction failure or even easily cracked accidents due to over-high temperature in the previous sodium phosphate heating process are avoided.