51results about How to "Overcome water absorption" patented technology

The invention discloses a composite foamed cement heat retaining panel using high-volume fly ash and a preparation method thereof; the composite foamed cement heat retaining panel is prepared by 60-80 parts of cement, 20-40 parts of fly ash, 0.6-3.0 parts of moisture repellent, 0.12-0.30 part of a water reducing agent, 0.8-3.0 parts of an exciting agent, 0.3-0.50 part of anti-crack fiber, 30-60 parts of water and 4-8 parts of a foaming agent (by weight); the preparation method comprises the following steps: weighing each raw material; adding the water, the anti-crack fiber, the moisture repellent, the cement, the fly ash, the water reducing agent; stirring a mixture; adding the exciting agent; stirring the mixture; adding the foaming agent; stirring the mixture so as to prepare mixed slurry; then, injecting the mixed slurry into a mould; putting the mould statically for 4-5 hours; removing the mould; after 24 hours, cutting and packaging a product; and maintaining the product until age is 28 days. According to the invention, a part of the cement is substituted by fly ash; cost is low; environment pollution is reduced; and social efficiency and economic benefit are obvious.

The Tilmisartan salt of the present invention is salt formed with Tilmisartan and alkali metal, alkali earth metal, pharmaceutically acceptable amine, amino acid. It may be sodium salt, potassium salt, calcium salt, magnesium salt and amine salt, preferably sodium salt, potassium salt or tert-butyl amine salt. The preparation of Tilmisartan salt includes the following steps: reaction between Tilmisartan and organic alkali, inorganic alkali, arginine or lysine in organic solvent or water to produce target product, and collecting Tilmisartan salt. The Tilmisartan salt may be used to replace available Tilmisartan.

The invention discloses an inorganic fireproof heat insulation board and a preparation method thereof. The inorganic fireproof heat insulation board is characterized by including a hollow ceramic bead surface layer, a glass fiber grid cloth layer, an expanded perlite composite layer, a glass fiber grid cloth layer and a hollow ceramic bead bottom layer from top to bottom; potholes are arranged on the hollow ceramic bead layer, and grooves are arranged on the hollow ceramic bead bottom layer; non-woven cloth layers are arranged respectively on the hollow ceramic bead surface layer as well as the bottom layer; further, the hollow ceramic bead surface layer and the hollow ceramic bead bottom layer are made of hollow ceramic bead slurry, and the expanded perlite composite layer is made of expanded perlite composite layer slurry. The preparation method includes the following steps: preparing the hollow ceramic bead bottom layer; spreading the glass fiber grid cloth; preparing the expanded perlite composite layer; spreading the glass fiber grid cloth; preparing the hollow ceramic bead surface layer; compacting for formation; and demoulding and solidifying. The inorganic fireproof heat insulation board has the advantages of excellent heat insulation performance, low thermal conductivity, fire resistance and high fireproofing grade, environmental protection and the like; further, the integral compression strength is greatly improved.

The invention provides a waterproof and antiflaming PVC (polyvinyl chloride) cable material and a preparation technology thereof. The waterproof and antiflaming PVC cable material comprises the following components in parts by weight: 55-65 parts of PVC of degree of polymerization of 590-720, 35-45 parts of PVC of degree of polymerization of 1110-1340, 20-30 parts of trioctyl trimellitate, 15-25 parts of didecyl phthalate,5-10 parts of environmental protection calcium and zinc compound stabilizer, 5-10 parts of compound rare earth stabilizer, 4-8 parts of antimonous oxide, 0.3-1 parts of lubricant, 0.1-0.5 parts of antioxygen, 3.5-7 parts of nano barium sulfate, 2.6-5.2 parts of calcined kaolin, 3.5-7 parts of nano silica, and 0.18-0.36 parts of silane coupling agent, wherein the silane coupling agent is vinyl (beta-methoxy-ethoxy) silane, vinyl trimethoxy silane or gamma-glycidyl ether oxygen propyl three methoxy-silane. The hydroscopicity of a cable jacket is greatly lowered, when the cable material is used in wet or soaking environment, the stable property of electric is further improved and does not change generally, and the compact of the product is improved and the micropores of the material are removed.

The invention discloses a co-extrusion molding device for a wood plastic-solid wood composite material, relates to a co-extrusion molding device for a composite material, and solves the problem that a traditional wood plastic co-extrusion set is not suitable for co-extrusion of a rigid solid wood material. A co-extrusion mold is mounted on a machine head of a wood plastic extruder in a detachable manner; a solid wood conveying device and a cooling shaping device are respectively mounted at the left and right ends of the co-extrusion mold; after a solid wood quick connecting device, a solid wood conveyer, a far infrared drying machine and a glue applying device of the solid wood conveying device are connected in sequence from right to left, the glue applying device is connected with the right end of the co-extrusion mold; one end of a shaping mold of the cooling shaping device is connected with the left end of the co-extrusion mold, and the other end of the shaping mold is connected with a cooling water tank; the co-extrusion mold comprises a mold main body, a cold mold and a plurality of guide edges; the cold mold is mounted at the left end of the mold main body; and the plurality of guide edges are arranged on the inner wall of a solid wood feed main channel of the mold main body. The co-extrusion molding device is used for the co-extrusion molding of the wood plastic-solid wood composite material.

The invention discloses a thermosetting epoxy resin composition and applications thereof. The thermosetting epoxy resin composition comprises, by weight, 100 parts of epoxy resin, 1 to 10 parts of aromatic diamine, 0.5 to 2.2 parts of dicyanodiamide, 30 to 200 parts of an inorganic filling material containing boehmite or / and barium sulfate, and 0.05 to 1.0 part of a curing accelerator. CTI of the thermosetting epoxy resin composition is larger than 600 V; the thermosetting epoxy resin composition is low in water absorption, and excellent in cohesiveness and machine processing characteristic; is capable of improving adaptive capacity of PCB in severe environment obviously, and can be used for producing prepregs and laminated boards used for preparing printed circuits.

A bismuth sodium titanate thin film series has a formula of (1-X)(Bi0.5Na0.5)TiO3+XMTiO3, where x=0-0.6 and M is chosen from Ba, Pb, Sr and Ca, and is prepared by metal-organic solution depositing method. Its advantages are proper electric conductivity in ferroelectric region, wide sinter temp range, and high storage and thermoelectric properties.

The invention discloses a preparation method of rapid and high water-absorption non-woven cloth, which comprises the following steps: preparing a hydrophilic monomer, a comonomer, an initiator, a cross-linking agent and distilled water into mixed grafting liquid by an ultraviolet irradiation initiation method; copolymerizing and cross-linking a water-absorbing resin layer with high water-absorbing capacity on a polyester non-woven cloth base body; and performing sodium hydroxide neutralization and ethanol dehydration to prepare rapid and high water-absorption non-woven cloth with a large amount of fluffy structures. The preparation method of the rapid and high water-absorption non-woven cloth has the advantages of easily available raw materials, low cost and simplicity in operation. Compared with the traditional high water-absorption resin, the rapid and high water-absorption non-woven cloth prepared by the method has higher water-absorbing speed, more stable morphological structure and higher practicability. Compared with the conventional high water-absorption fiber, the rapid and high water-absorption non-woven cloth prepared by the method has higher water-absorbing rate and can be widely applied in the fields of sanitation, air dehumidification and the like.

The invention discloses a method for synthesizing an N-substitued benzo-isothiazolone derivative. The method comprises the following steps: using 2, 2'-dithiodibenzoic acid and triphosgene as raw materials to carry out acylating chlorination, reacting 2, 2'-dithiodibenzoyl chloride with an amine compound to obtain an amide compound, and then performing disproportionation cyclization reaction on the amide compound and an oxidant in a micro-channel reactor under alkaline conditions to obtain the N-substitued benzo-isothiazolone derivative. The synthesizing method has the advantages of 98% above selectivity, 62% above raw material conversion rate, 54% above yield rate, 99% above product purity, strong technical path operability, safe and simple operation process, stable product quality and high yield rate and is suitable for industrial production.

The invention discloses a waterproof flame-retardant protective jacket layer used for a cable and a manufacturing process of the protective jacket layer. The waterproof flame-retardant PVC (Polyvinyl Chloride) cable material consists of the following components in parts by weight: 100 parts of polyvinyl chloride, 20-30 parts of trioctyl trimellitate, 15-25 parts of phthalate, 5-10 parts of an environment-friendly calcium-zinc composite stabilizer, 5-10 parts of a composite rear-earth stabilizer, 4-8 parts of antimonous oxide, 0.3-1 part of a lubricant, 0.1-0.5 part of an antioxidant, 3.5-7 parts of nano-barium sulfate, 2.6-5.2 parts of calcined kaolin, 3.5-7 parts of nanosilicon dioxide and 0.18-0.36 part of silane coupling agent, wherein the silane coupling agent is vinyl tri(beta-methoxyl ethyoxyl) silane, ethenyl trimethoxy silane or beta- glycidyl ether oxypropyl trimethoxy silane. According to the invention, water absorption of the cable protective jacket layer is greatly lowered, the products are applied in a moist or water-soaking environment, so that electrical performance stability is further improved almost without generating changes, and therefore, compactness of products is improved, and material micropores are removed.

The invention relates to a flame retardant charring agent-tetra-{1-oxyphospha-2,6,7-trioxabicyclo-[2.2.2]-octane-(4)-methyl} silicate compound and a preparation method thereof. The compound has a structural formula shown in the specification. The preparation method comprises the following steps of dropwise adding silicon tetrachloride into a solution of 1-oxyphospha-4-hydroxymethyl-2,6,7-trioxabicyclo-[2.2.2]-octane (PEPA) and an organic solvent at 20 DEG C, heating to 80-140 DEG C, performing stirring reaction for 4-10 hours, adding a fixed quantity of an acid-binding agent, stirring for 1 hours, and ending the reaction when detecting that the pH value of the solution is 5-6; cooling, performing suction filtration, washing by water, and drying to obtain tetra-{1-oxyphospha-2,6,7-trioxabicyclo-[2.2.2]-octane-(4)-methyl} silicate. The compound is the excellent halogen-free phosphorus-silicon synergistic flame retardant charring agent and can be applied to polyolefin, polyester, polyvinyl chloride, polyurethane, epoxy resin, unsaturated resin and the like, the process is simple, the equipment investment is low, and the industrialized production is easy to realize.

A yolk lecithin capsule is prepared from yolk lecithin 100 (wt. portions), vegetative oil 100-150, VE3, and tert-butylhydroquinone 0.03 as antioxidizing agent. Its advantages are no need of cold-chain transportation, and high content of phosphatidylcholine and linolenic acid.

The invention discloses a waterproof flame-retardant protective jacket layer used for a cable and a manufacturing process of the protective jacket layer. The waterproof flame-retardant PVC (Polyvinyl Chloride) cable material consists of the following components in parts by weight: 100 parts of polyvinyl chloride, 20-30 parts of trioctyl trimellitate, 15-25 parts of phthalate, 5-10 parts of an environment-friendly calcium-zinc composite stabilizer, 5-10 parts of a composite rear-earth stabilizer, 4-8 parts of antimonous oxide, 0.3-1 part of a lubricant, 0.1-0.5 part of an antioxidant, 3.5-7 parts of nano-barium sulfate, 2.6-5.2 parts of calcined kaolin, 3.5-7 parts of nanosilicon dioxide and 0.18-0.36 part of silane coupling agent, wherein the silane coupling agent is vinyl tri(beta-methoxyl ethyoxyl) silane, ethenyl trimethoxy silane or beta- glycidyl ether oxypropyl trimethoxy silane. According to the invention, water absorption of the cable protective jacket layer is greatly lowered, the products are applied in a moist or water-soaking environment, so that electrical performance stability is further improved almost without generating changes, and therefore, compactness of products is improved, and material micropores are removed.

The invention relates to a preparation method and application of a graphene nickel foam electrode. The preparation method comprises the steps of cleaning and drying nickel foam as a working electrode,carrying out scanning in a graphene oxide dispersion liquid by using a cyclic voltammetry to prepare a graphene oxide nickel foam electrode; and drying and then carrying out constant-potential reduction in a glycine-hydrochloric acid buffer solution to obtain the graphene nickel foam electrode. Compared with the preparation methods of other graphene electrodes, the preparation method of the graphene nickel foam electrode has the advantages of being cheap in raw materials, free of pollution, green and environment-friendly, and mass production is facilitated. The graphene nickel foam electrodesupported through the nickel foam has good capacitive performance in a neutral electrolyte and can be applied to the field of energy storage.

The invention discloses a lithium nickel cobalt aluminum oxide LiNi<1-x-y>Co<x>Al<y>M<z>O<2+z> and a hydrophobic material coating the surface of the NCA lithium nickel cobalt aluminum oxide, wherein xis smaller than or equal to 0.15 and greater than or equal to 0.08, y is smaller than or equal to 0.1 and greater than or equal to 0.03, z is smaller than or equal to 0.2 and greater than or equal to0.01, and the lithium nickel cobalt aluminum oxide is NCA for short. The hydrophobic material coats the surface of the NCA lithium nickel cobalt aluminum oxide, so that the coating material is insoluble in water and has electrolyte resistance. Compared with a traditional NCA lithium nickel cobalt aluminum oxide material, the lithium nickel cobalt aluminum oxide LiNi<1-x-y>Co<x>Al<y>M<z>O<2+z> hasthe advantage that the composite material of the lithium nickel cobalt aluminum oxide LiNi<1-x-y>Co<x>Al<y>M<z>O<2+z> is capable of solving the problem that a lithium nickel cobalt aluminum oxide battery easily absorbs water. The invention further discloses a preparation method of the composite material of the lithium nickel cobalt aluminum oxide LiNi<1-x-y>Co<x>Al<y>M<z>O<2+z>.

The invention relates to a vegetable fiber inorganic lightweight filling aggregates, which is prepared by the following steps: adding vegetable fiber in a magnesium chloride solution with concentration of 20% and temperature of 25-30 DEG C and then stirring to remove fat, adding fly ash with 300-400 meshes and stirring for filling perforation, adding a methyl-sodium silicate aqueous solution for stirring gel with ratio of 1: 20; removing gel and processing, drying the vegetable fiber, wherein water content is 5-8%, then granulating to form the vegetable fiber inorganic lightweight filling aggregates. According to the invention, fat removal, perforation filling and gel inorganic modification treatment are carried out on vegetable fiber, defects of easy decomposition, easy damage by worms and high water absorption can be basically overcome for using a straw raw material as a permanent building element, the vegetable fiber inorganic lightweight filling aggregates provides technology and product for smooth development, and promote the ecologicalization and weight reduction level of buildings.

The invention discloses glass and benzene composite thermal insulation mortar, which is prepared by the following steps of: weighing cement and mineral powder according to weight part, putting into a mixer, weighing polypropylene fibers, redispersible latex and cellulose ether, putting into the mixer, and uniformly stirring to form a premix; respectively weighing the premix, vitrified micro bubbles and polystyrene granules, adding into a spiral ribbon mixer, stirring the three materials uniformly, and completely opening a bin gate at the bottom of the mixer to obtain the uniformly stirred glass and benzene composite thermal insulation mortar; and packaging the glass and benzene composite thermal insulation mortar by using a packaging machine. The glass and benzene composite thermal insulation mortar has the advantages of low water absorption, small conductivity factor, high strength, and good thermal insulation performance, the flammability can be greatly reduced, the construction efficiency is improved and the manpower is saved.

The invention discloses a dense paste premixing method for improving the properties of a building garbage recycled aggregate concrete. According to a set preparing ratio, a part of cement and a part of water are premixed, forming a dense paste; and then, recycled coarse aggregates are added and mixed, and a dense paste wrapped material is formed after full and uniform stirring. At the same time, after a mixed dry material is obtained by mixing and stirring the rest of cement and recycled fine aggregates, the rest of water is added, and after stirring, premixed mortar is formed; and then, after the dense paste wrapped material and the premixed mortar are mixed and uniformly stirred, the recycled concrete is obtained. The dense paste wrapped material enables the interfaces of the coarse aggregates to be in full contact with the cement paste, so that a cementation function is improved; and the mixed dry material and the premixed mortar can overcome the high water absorption and high viscosity problems of the recycled fine aggregates, the cement fully absorbs the water, and a cement hydration function is promoted. Experimental results show that the properties are obviously better than those of a concrete prepared by a traditional mixing technology.

The invention belongs to the technical field of food, and relates to a noodle containing resistant starch and a preparation method thereof. The noodle containing the resistant starch is mainly prepared from the following raw materials by weight: 90-110 parts of flour, 0.5-6 parts of banana resistant starch, 0.5-6 parts of yam resistant starch, 0.2-5 parts of corn starch solution containing whey protein and 22-40 parts of water. The noodle has high nutritional value, reasonable formula, high-content rich stable resistant starch, fineness, good taste, strong strength and good cooking characteristics, and is beneficial to absorption and digestion of the human body. The high content of the resistance starch can play a health care effect on the human body health without affecting the taste andthe quality of the product. The noodle is wider in applicable population and higher in application value. The noodle is simple and easy in process, low in cost and prone to achieve industrial production in a large scale.

The invention provides a polyurethane-rock wool composite heat insulating plate external wall external heat insulating system with rib laths. The system comprises a polyurethane-rock wool composite heat insulating plate, an anti-cracking mortar layer of a composite reinforcing net, elastic first coat and a facing layer. The polyurethane-rock wool composite heat insulating plate comprises a rock wool inner core formed by arranging multiple vertical silk rock wool strips into a flat plate shape. Hard foam polyurethane parts I formed in the manner that after polyurethane composite materials are poured on corresponding surfaces of the rock wool inner core, foam forming and curing are completed under pressure are arranged on the inner surface and the outer surface of the rock wool inner core, the hard foam polyurethane part I on each side comprises a hard foam polyurethane layer I covering the corresponding surface of the rock wool inner core, and a polyurethane bonding body I formed by permeating into the rock wool inner core, an aerogel heat insulating mortar layer is formed on the hard foam polyurethane layer I on each side, one rib lath is arranged in the aerogel heat insulating mortar layer on each side, or one rib lath is arranged at the position of a joint interface of the aerogel heat insulating mortar layer on each side and the corresponding hard foam polyurethane layer I.

The invention discloses a water retaining agent used for desert greening as well as a preparation method and application of the water retaining agent. The water retaining agent used for the desert greening provided by the invention has the advantages of being environmentally friendly, biodegradable and pollution-free to soil, starch and potassium fulvic acid are added, so that the water absorptionand salt-tolerant performance are greatly improved, the production costs are reduced, the demand for desertification treatment can be met, and the product application value is high; when the water retaining agent is prepared, through irradiation process adjustment, starch alkaline method low-temperature gelatinization, selection of a weakly-alkaline neutralizing agent and gel segmentation drying,the energy consumption is reduced, and the irradiation agent utilization rate and production efficiency are improved; and when the water retaining agent is used for the desert greening and water retention, grids can prevent sand from moving, and strengthen plant growth environment, an organic matter layer can play roles in supplying a carbon source, absorbing excess water and permeating air, a water retaining layer can store water and fertilizers for plant growth, and the synergistic effect of the three measures can greatly improve a survival rate of seedlings planted in desert.

The invention discloses a PA66 / PPO composite material and a preparation method thereof. The PA66 / PPO composite material is composed of the following components in parts by weight: 15-25 parts of low-viscosity polyhexamethylene adipamide, 15-25 parts of high-viscosity polyhexamethylene adipamide, 20-35 parts of polyphenylene ether, 1-10 parts of a compatibilizer A, 1-10 parts of a compatibilizer B,1-10 parts of a toughening agent, 1-5 parts of a lubricant A, 0.1-2 parts of a lubricant B, 0.1-1 part of an antioxidant A, 0.1-1 part of an antioxidant B, 2-8 parts of a flame retardant, 0.1-1 partof a heat stabilizer, and 0.2-1 part of a dispersant, wherein the low-viscosity polyhexamethylene adipamide has viscosity of 1.05-1.1Pa*s, and the high-viscosity polyhexamethylene adipamide has viscosity of 2.55-2.85Pa*s. The PA66 / PPO composite material disclosed by the invention has the advantages of high strength, high impact, high heat resistance, difficult flammability, and excellent electrical insulating performance and flame retardance.

The invention provides a waterproof and antiflaming PVC (polyvinyl chloride) cable material and a preparation technology thereof. The waterproof and antiflaming PVC cable material comprises the following components in parts by weight: 55-65 parts of PVC of degree of polymerization of 590-720, 35-45 parts of PVC of degree of polymerization of 1110-1340, 20-30 parts of trioctyl trimellitate, 15-25 parts of didecyl phthalate,5-10 parts of environmental protection calcium and zinc compound stabilizer, 5-10 parts of compound rare earth stabilizer, 4-8 parts of antimonous oxide, 0.3-1 parts of lubricant, 0.1-0.5 parts of antioxygen, 3.5-7 parts of nano barium sulfate, 2.6-5.2 parts of calcined kaolin, 3.5-7 parts of nano silica, and 0.18-0.36 parts of silane coupling agent, wherein the silane coupling agent is vinyl (beta-methoxy-ethoxy) silane, vinyl trimethoxy silane or gamma-glycidyl ether oxygen propyl three methoxy-silane. The hydroscopicity of a cable jacket is greatly lowered, when the cable material is used in wet or soaking environment, the stable property of electric is further improved and does not change generally, and the compact of the product is improved and the micropores of the material are removed.

The invention relates to a flame retardant dilphosphonic heterocyclic polysilicate compound and a preparation method thereof. The structure of the compound is shown as a formula in the description. The preparation method comprises the following steps of adding dimethyldichlorosilance and 2 to 2.4 mol of phosphocycloxy dimethylsilicate into an organic solvent; performing heat insulation reaction for 6 to 9h at 120 to 160 DEG C for completely exhausting hydrogen chloride; performing purification treatment; obtaining a product of the flame retardant dilphosphonic heterocyclic polysilicate. The compound provided by the invention belongs to an excellent silicon phosphorus cooperated flame retardant char forming agent which can be used as the flame retardant char forming agent of polyamide, polyester, polyurethane, polyolefin, epoxy resin, unsaturated resin and the like; the process is simple; the equipment investment is low; the industrialized production can be easily realized.

The invention discloses an euphausia superba oil extracting and refining process, which comprises the following steps: degumming, deacidifying and deodorizing crude euphausia superba oil after leaching by adding absolute ethyl alcohol, centrifuging, filtering and desolventizing to obtain refined euphausia superba oil, wherein the degumming adopts a phosphoric acid hydration method and comprises: adding phosphoric acid and double distilled water into the crude euphausia superba oil, carrying out a reaction, and carrying out centrifugal layering to obtain upper-layer degummed euphausia superba oil, and the deacidifying comprises: neutralizing the free fatty acid in the degummed euphausia superba oil by adding a sodium hydroxide solution to generate a sodium aliphatate salt, carrying out coagulation sedimentation, and adding double distilled water to wash away the residual soapstock in the euphausia superba oil so as to obtain upper-layer deacidified euphausia superba oil.

The invention discloses a low-density rough yarn count towel production method, and belongs to the technical field of weaving. Wool warp yarn, ground warp yarn and weft yarn are all woven by single yarn. Density of the weft yarn is lowered during weaving, desizing, softening processing and other post-processing are carried out after weaving, and a low-density rough yarn count towel product is obtained. A towel produced through the method is woven by yarn of rough yarn count, but hand feel is comfortable, water absorption performance is good, and skin-friendly performance is good.

The invention relates to the field of novel materials, in particular to a preparation method of an environment-friendly bottle cap capable of being repeatedly used, which comprises the following steps: step 1, preparing a mold: preparing a corresponding mold according to the shape of the bottle cap; 2, feeding: adding raw materials into a high-speed stirrer, uniformly mixing, and putting the mixture into an injection molding machine for melting and plasticizing to obtain a plasticized material; 3, molding: adding the plasticized material into the mold through injection molding, adding a nucleating agent, and carrying out injection molding; and 4, demolding to obtain the environment-friendly bottle cap capable of being repeatedly used. The problems that the common degradable plastic polyamide at present has the defects of easy water absorption and poor high and low temperature resistance, which limit the application of the degradable plastic polyamide on the bottle cap, are solved. Thebottle cap prepared by the method disclosed by the invention can be repeatedly used for multiple times without being damaged, and the adopted raw materials belong to environment-friendly materials andaccord with a sustainable development strategy.

The invention discloses an environment-friendly autoclaved aerated concrete panel caulking agent, which is prepared from the following components in parts by weight: 5-30 parts of a building adhesive,10-40 parts of heavy calcium carbonate, 30-50 parts of sand, 5-15 parts of water, 0.5-2 parts of a waterproof agent, 0.1-0.5 part of polypropylene fibers, 0.3-1 part of a water-retaining agent, 0.1-0.5 part of an antifreezing agent, 0.3-1 part of a defoaming agent, 0.5-1 part of a fire retardant and 0.5-1.5 parts of a preservative. Due to the synergistic effect of all the components, the environment-friendly autoclaved aerated concrete panel caulking agent has better cohesiveness and flexibility, can overcome the water absorption property of autoclaved aerated concrete panels, enables the panels to be better connected with each other, and reduces the permeation of erosive substances such as water so as to enable the panels not to crack in a using process and prolong the service life of awall body; the caulking agent can be directly used for field construction without being stirred, thus reducing the flying dust during field construction and having environmental friendliness.

The invention relates to a flame retardant tetra(thiophosphonic heterocyclic silicate methoxide) silane compound and a preparation method thereof. The structure of the compound is shown as a formula in the description. The preparation method comprises the following steps of adding dimethyl silicate trimethylol phosphine sulfide cyclic ester and organic solvents into a reaction vessel provided witha hydrogen chloride absorption device; then, dripping silicon tetrachloride; controlling the mol ratio of the silicon tetrachloride to the dimethyl silicate trimethylol phosphine sulfide cyclic esterto be 1:4-1:4.7; controlling the dripping temperature not to exceed 50 DEG C; after the dripping completion, raising the temperature to 80 to 150 DEG C; performing heat insulation reaction for 7 to 12h; performing purification treatment to obtain a product of the flame retardant of tetra(thiophosphonic heterocyclic silicate methoxide) silane. The compound is an excellent halogen-free phosphorus silicon and sulphur flame retardant, and can be used as a flame retardant char forming agent of polyvinyl alcohol, polyester, polyvinyl chloride, polyurethane, epoxy resin, unsaturated resin and the like; the process is simple; the equipment investment is low; the industrialized production can be easily realized.