Overview[1][2]
Magnesium hypophosphite is a phosphorus-containing flame retardant with very high flame retardant efficiency. Compared with halogen flame retardants, phosphorus flame retardants have lower smoke generation, toxicity and corrosiveness. Phosphorus flame retardants can be used alone or in combination with other types of flame retardants. Generally, in the case of photoinitiators, the higher the phosphorus content, the better the flame retardant effect.
Preparation[1]
CN201510521322.5 provides a new joint production method for preparing hypophosphite of calcium, magnesium and aluminum. The preparation method has a simple process route, mild reaction conditions, less pollution, pure product, high hypophosphite ion utilization rate, high comprehensive yield, low cost, and easy industrial production.
The above objects of the present invention are achieved through the following technical solutions:
(1) Prepare sodium hypophosphite solution
(2) Prepare soluble calcium salt solution or soluble magnesium salt solution
(3) Mix the sodium hypophosphite solution and the soluble calcium salt solution or the soluble magnesium salt solution evenly and react at 20-60°C to produce the target product calcium hypophosphite or magnesium hypophosphite.
(4) Add enough water to dissolve the generated soluble sodium salt to the above reaction solution according to the solubility of the generated soluble sodium salt at room temperature. The reaction solution is lowered to room temperature and then filtered to obtain the target calcium hypophosphite or magnesium hypophosphite crude product. The crude product is washed with water, filtered, sieved, and dried to obtain the target calcium hypophosphite or magnesium hypophosphite product with higher purity.
Apply[2-5]
CN201810622880.4 discloses a new type of environmentally friendly building material. The environmentally friendly building material is made of the following components: Portland cement, kaolin, barium sulfate, ethylene-vinyl acetate copolymer, nano-silica, carbon fiber, magnesium hypophosphite, antibacterial agent; the rest is water. The weight parts of the above components are: 18-20 parts of Portland cement, 15-18 parts of kaolin, 10-12 parts of barium sulfate, 12-16 parts of ethylene-vinyl acetate copolymer, and 7-16 parts of nano-silica , 12-24 parts of carbon fiber, 5-8 parts of magnesium hypophosphite, 3-7 parts of antibacterial agent; the rest is water. The purpose of the present invention is to provide a building material with antibacterial ability, which can prolong the service life of the building material and is green and environmentally friendly.
CN201610279491.7 relates to a method for preparing building insulation materials. The method includes: weighing 60 kg of phosphogypsum, 20 kg of magnesium hypophosphite, 15 kg of talc, 15 kg of glass fiber triethylene tetramine, aluminum sulfate 30 kg, expanded perlite 30 kg, 2-amino-N-(3-methoxy-4-(oxazol-5-yl)phenyl)-2-(2-methylcyclohexyl)acetamide 20 kg and 100 kg of water. First add phosphogypsum to the water, then add magnesium hypophosphite, talc, glass fiber, aluminum sulfate, expanded perlite, 2-amino-N-(3-methoxy-4-(oxazole- 5-yl)phenyl)-2-(2-methylcyclohexyl)acetamide, stir in a mixer at 50 rpm for 1 hour, then add 200 kg of cement, and stir for another 5 minutes to obtain a uniform mixture; The obtained mixture is injected into the mold, and after letting it stand for 2 hours, the mold is removed. After another 24 hours, it is cut, packaged, and cured until the age is 28 days.
CN201710692720.2 discloses a degradable building material and its preparation process. The formula consists of synthetic resin, fly ash, concrete, inorganic foaming agent, plasticizer, antioxidant, stone powder, and group paste. , titanium dioxide, magnesium hypophosphite, petroleum resin, sycamore wood chips, biocellulose, vinyl ketone copolymer, starch modified polyethylene, mixed in a certain proportion; the preparation method of the present invention includes the following steps: ingredients, preparation of group A component, prepare component B, prepare component C and pouring and molding; the production process of the invention is simple and is not easily deformed under pressure. At the same time, it can alleviate environmental pollution caused by a large amount of non-degradable synthetic polymer material waste. It is low-carbon, green and environmentally friendly, and can be widely used. It is widely used in the field of building materials and improves the utilization rate; the present invention can produce no solid waste after absorption, digestion and decomposition in the natural environment, and the decomposition rate in the natural environment is greatly accelerated, reducing environmental pollution and reducing the burden on the natural environment.
CN201610685760. ���14-20 parts, melamine cyanurate salt 9-13 parts, silicon carbide 6-12 parts, ammonium heptamolybdate 3-7 parts, magnesium stearate 2-9 parts, ethyl 3-ethoxypropionate 12-25 parts, lactic acid 1-3 parts, glass fiber 23-29 parts, ceramic fiber 12-23 parts, aluminum oxide 23-27 parts, titanium dioxide 1-3 parts, tetraethylthiuram disulfide 3 -7 parts, N-phenyl-α-naphthylamine 4-10 parts, barium sulfate 3-7 parts, monoethylhexyl phthalate 3-7 parts, antimony trioxide 0.5-2 parts, decabromide 2-5 parts of diphenyl ether, 1-5 parts of dimethyl silicone oil, 1-2 parts of diethyldithiocarbamic acid. The technology of the present invention utilizes a unique molecular design to improve the molecular interaction between thermoplastic plastic and fillers. The high-efficiency contact between fillers forms a heat channel and greatly improves the thermal conductivity.
Main reference materials
[1] [Chinese invention] CN201510521322.5 A method for jointly producing calcium, magnesium and aluminum hypophosphites
[2] CN201810622880.4 New environmentally friendly building materials
[3] CN201610279491.7 Preparation method of building insulation materials
[4] CN201710692720.2 A degradable building material and its preparation process
[5] CN201610685760.X A thermally conductive composite plastic with insulation function
