CN111217551A - Inorganic mineral polymeric fiber crystal halogen-free flame retardant powder - Google Patents
Inorganic mineral polymeric fiber crystal halogen-free flame retardant powder Download PDFInfo
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- CN111217551A CN111217551A CN201811403005.3A CN201811403005A CN111217551A CN 111217551 A CN111217551 A CN 111217551A CN 201811403005 A CN201811403005 A CN 201811403005A CN 111217551 A CN111217551 A CN 111217551A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/60—Agents for protection against chemical, physical or biological attack
- C04B2103/63—Flame-proofing agents
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00482—Coating or impregnation materials
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/28—Fire resistance, i.e. materials resistant to accidental fires or high temperatures
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Fireproofing Substances (AREA)
Abstract
A halogen-free flame-retarding powder of inorganic mineral polymer fibre crystal is prepared from expandable graphite with fineness of 200-320 meshes, expanded vermiculite powder, aluminium hydroxide, silicon powder, zirconium silicate powder, magnesium hydroxide, silicon nitride, antimony trioxide, zinc borate, rutile titanium oxide powder, sepiolite powder and zeolite powder through proportional mixing. The fireproof material has the advantages of lasting flame retardance in use performance, insulation, heat insulation and high temperature resistance, is nontoxic, is white crystal powder, has no peculiar smell, is stable in gas, and separates a polymer from a heat source to reduce the flame retardance of the system. The temperature promotes dehydration and carbonization, and can combine free radicals generated by combustion to interrupt chain reaction, and the flame retardant, non-combustible, non-flaming, non-smoke, non-toxic and non-volatile functions are realized, so that the flame retardant, non-flaming and non-combustible functions are realized by separating the flame retardant, non-flaming and non-volatilizing functions from a heat source; further avoiding secondary harm of halogen to the environment and preventing the health of people from being influenced after the cigarette is inhaled into a human body.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the field of flame retardant powder, and particularly relates to inorganic mineral polymeric fiber crystal halogen-free flame retardant powder.
[ background of the invention ]
The flame-retardant powder is mainly applied to the fields of furniture, building materials and transportation. The addition of the flame retardant powder cannot enable the material to obtain the capability of completely resisting a fire, but can reduce the occurrence of the fire and win precious escape time for people in a fire scene. In a space with fire, due to the accumulation of inflammable gas and heat, a 'flash-fire' phenomenon may occur, namely, various inflammable substances are ignited within 1-2 seconds at the same time; particularly, in the tunnel, due to the small space in the tunnel, poor air fluidity and high vehicle passing density, once a fire disaster occurs, the temperature of the inner wall, the outer wall and the steel structure is increased, the wall of the tunnel is cracked due to the temperature increase, the strength of the wall is lost, collapse is caused, and therefore unforeseen consequences are caused, and the flame-retardant coating is matched with a carrier, so that the situation can be effectively avoided, and valuable fire extinguishing time is won for fire fighters;
at present, a flame-retardant powder halogen-containing polymer in a flame-retardant coating or a flame-retardant mixture formed by combining the flame-retardant powder halogen-containing polymer with a halogen-containing flame retardant has excellent flame-retardant performance and is widely applied as a flame-retardant material. However, when a fire disaster occurs, the halogen-containing flame-retardant materials can generate a large amount of smoke and toxic corrosive hydrogen halide gas, so that secondary harm is caused to the environment, and the health of people can be affected after the halogen-containing flame-retardant materials are inhaled into human bodies; most tunnels are arched and have poor air flow, smoke is easy to gather particularly in case of fire, and halogen-containing polymers or flame-retardant mixtures combined with halogen-containing flame retardants volatilize more harmful substances; thereby influencing the rescue of the subsequent firefighters at the first time, and further threatening the life safety of the trapped people in the tunnel; therefore, the invention provides the inorganic mineral polymeric fiber crystal halogen-free flame retardant powder.
[ summary of the invention ]
The invention aims to provide the inorganic mineral polymeric fiber crystal halogen-free flame retardant powder, so that the problem that when a fire disaster happens, a large amount of smoke and toxic corrosive hydrogen halide gas are generated by a halogen-containing flame retardant material, secondary harm is caused to the environment, and the health of people is influenced after the halogen-containing flame retardant material is inhaled into a human body is solved.
The invention relates to an inorganic mineral polymeric fiber crystal halogen-free flame retardant powder, which is prepared by adding expandable graphite with the fineness of 200 meshes to 320 meshes, expanded vermiculite powder, aluminum hydroxide, silicon micropowder, zirconium silicate powder, magnesium hydroxide, silicon nitride, antimony trioxide, zinc borate, rutile titanium dioxide, sepiolite powder and zeolite powder into a stirrer according to the component proportion and stirring the materials uniformly.
Further, the components in the material A are distributed as follows according to the weight percentage: 8-10 parts of expandable graphite, 8-10 parts of expanded vermiculite powder, 8-10 parts of aluminum hydroxide, 2-8 parts of silica micropowder, 2-7 parts of zirconium silicate powder, 8-10 parts of magnesium hydroxide, 4-8 parts of silicon nitride, 4-7 parts of antimony trioxide, 5-9 parts of zinc borate, 2-7 parts of rutile titanium dioxide, 12-15 parts of sepiolite powder and 8-10 parts of zeolite powder.
A method for using inorganic mineral polymeric fiber crystal halogen-free flame retardant powder comprises cleaning a base material; then mixing the prepared flame-retardant powder with a high-temperature-resistant adhesive in a ratio of 1:1 or stirring the flame-retardant powder accounting for 40% and the high-temperature adhesive accounting for 60% to obtain a liquid coating; during construction, 5% -10% of water is added for regulation according to the viscosity of a finished product; after the adjustment is finished, the coating is uniformly sprayed on the substrate, after the first time of spraying, the coating is sprayed for the second time after the coating is dried on the substrate, and after the second time of drying, the coating is sprayed for the third time, wherein the spraying times are counted three times, so that the flame retardant property is more stable.
The flame retardant powder is prepared by adopting the raw materials with flame retardant effect and no toxicity, is white crystal powder, has no peculiar smell, is stable in the air, has the functions of flame retardance, non-flammability, no open fire, no smoke abatement, no toxicity, no volatilization and the like, and can separate from a heat source to achieve the effects of difficult combustion and non-flammability of objects; further avoiding secondary harm of halogen to the environment and preventing the health of people from being affected after the cigarette is inhaled into a human body; effectively wins the valuable time for fire fighters to extinguish the fire.
The specific implementation mode is as follows:
example 1:
in the preparation process, 9 parts of expandable graphite with the fineness of 200 meshes to 320 meshes, 9 parts of expanded vermiculite powder, 9 parts of aluminum hydroxide, 7 parts of silica micropowder, 6 parts of zirconium silicate powder, 9 parts of magnesium hydroxide, 8 parts of silicon nitride, 6 parts of antimony trioxide, 8 parts of zinc borate, 6 parts of rutile titanium dioxide, 13 parts of sepiolite powder and 10 parts of zeolite powder are added into a stirrer to be uniformly stirred to prepare the composite material; mixing the prepared flame-retardant powder with a high-temperature-resistant adhesive in a ratio of 1:1 or stirring the flame-retardant powder accounting for 40% and the high-temperature adhesive accounting for 60% to obtain a liquid coating; during construction, 5% -10% of water is added for regulation according to the viscosity of a finished product; after the adjustment is finished, the coating is uniformly sprayed on the substrate, after the first time of spraying, the coating is sprayed for the second time after the coating is dried on the substrate, after the second time of drying, the coating is sprayed for the third time, the spraying is carried out for three times in total, and after the third time of spraying is dried, the spraying is finished.
Example 2:
in the embodiment, when the material A is prepared, 10 parts of expandable graphite, 10 parts of expanded vermiculite powder, 10 parts of aluminum hydroxide, 5 parts of silicon micropowder, 5 parts of zirconium silicate powder, 10 parts of magnesium hydroxide, 6 parts of silicon nitride, 6 parts of antimony trioxide, 8 parts of zinc borate, 5 parts of rutile titanium dioxide, 15 parts of sepiolite powder and 10 parts of zeolite powder are taken; mixing the prepared flame-retardant powder with a high-temperature-resistant adhesive in a ratio of 1:1 or stirring the flame-retardant powder accounting for 40% and the high-temperature adhesive accounting for 60% to obtain a liquid coating; during construction, 5% -10% of water is added for regulation according to the viscosity of a finished product; after the adjustment is finished, the coating is uniformly sprayed on the substrate, after the first time of spraying, the coating is sprayed for the second time after the coating is dried on the substrate, after the second time of drying, the coating is sprayed for the third time, the spraying is carried out for three times in total, and after the third time of spraying is dried, the spraying is finished.
In the invention, the fine particles of the expandable graphite are added into the common coating, so that the antistatic performance and the high temperature resistance and the fire resistance of the coating can be improved. A large amount of light non-combustible carbon layers formed in fire can effectively block heat radiation to the base material and effectively protect the base material. In addition, because graphite is a good electrical conductor, the resulting coating prevents the build-up of static charge; the expanded vermiculite powder is obtained by grinding expanded vermiculite, wherein the expanded vermiculite is in a block shape, a sheet shape and a granular shape, and interlayer water molecules of the expanded vermiculite are burnt at high temperature to increase the volume by 18-25 times; vermiculite has higher layer charge number, so that the vermiculite has higher cation exchange capacity and stronger cation exchange adsorption capacity. It is called vermiculite because it is flexible when it expands on heating, and it looks like leech (leech). The expanded vermiculite has unique structural characteristics and surface properties, and is non-toxic, sterile and chemically inert, so that the expanded vermiculite has excellent performances of heat insulation, freezing resistance, antibiosis, fire prevention, sound absorption, light weight and the like; thereby having the effects of flame retardance and fire prevention; the aluminum hydroxide serving as the flame retardant powder can not only retard flame, but also prevent smoke generation, does not produce drippings and does not produce toxic gas; thereby effectively preventing smoke and toxic gas generated during combustion; the silicon micropowder is an inorganic non-metallic material with no toxicity, odor and pollution. The shape and the mineral phase structure of the silicon micropowder particles form amorphous spherical particles with smooth surfaces, and some of the particles are aggregates formed by bonding a plurality of spherical particles together due to the action of surface tension in the phase change process of the silica fume in the forming process. It is a volcanic ash substance with large specific surface area and high activity. The tiny spheroids can play a role in lubrication by doping the materials with the silica fume; because the silicon micropowder has high purity, low impurity content, stable performance and excellent electrical insulation performance, the cured product has good insulation performance and arc resistance; the silicon micro powder is not easy to react with other substances, does not react with most of acid and alkali, and has stronger corrosion resistance because the particles are uniformly covered on the surface of an object; the particle size distribution is reasonable, and the phenomena of precipitation and layering can be reduced and eliminated when the composite material is used; the tensile strength and the compressive strength of the cured product can be enhanced, the wear resistance is improved, the heat conductivity coefficient of the cured product can be increased, and the flame retardant property is improved; the zirconium silicate has high melting point of 2500 ℃, so that the flame resistance of the flame retardant can be effectively improved in the flame retardant; magnesium hydroxide is an inorganic flame-retardant filler of a high polymer-based composite material; like aluminum hydroxide, the flame-retardant magnesium hydroxide powder plays a flame-retardant role by means of absorbing heat through chemical decomposition and releasing water when being heated, so that the flame-retardant magnesium hydroxide powder has the advantages of no toxicity, low smoke, stable chemical property of magnesium oxide generated after decomposition, no secondary pollution and the like; the silicon nitride belongs to a high-temperature insoluble compound, has no melting point and strong high-temperature creep resistance, and the reactive sintering silicon nitride without a binder has a load softening point of over 1800 ℃; silicon nitride is very strong, especially hot pressed silicon nitride, and is one of the hardest substances in the world. The high-temperature-resistant aluminum alloy is extremely high-temperature-resistant, the strength can be maintained to 1200 ℃ without reduction, the aluminum alloy can not be melted into a melt after being heated, the aluminum alloy can not be decomposed until 1900 ℃, and the aluminum alloy has remarkable chemical resistance, can resist almost all inorganic acids and caustic soda solution with the concentration of less than 30 percent, and can resist corrosion of a plurality of organic acids; meanwhile, the material is a high-performance electric insulating material; therefore, the flame retardant property can be achieved in the invention; antimony trioxide, an inorganic compound. The natural product is called antimony white, commonly called antimony white, white crystalline powder and has a melting point of 655 ℃; the zinc borate is environment-friendly non-halogen flame retardant powder, and has the characteristics of no toxicity, low water solubility, high thermal stability, small granularity, small specific gravity, good dispersibility and the like; the flame retardant can be used as a multifunctional synergistic additive of antimony oxide or other halogen flame retardant powder, can effectively improve flame retardant performance, reduce the generation of smoke during combustion, and can adjust the chemical, mechanical, electrical and other properties of rubber and plastic products; titanium dioxide (titanium dioxide) is stable in chemical property and does not react with most substances under general conditions. There are three types of titanium dioxide crystals in nature: brookite, anatase, and rutile. The brookite type is an unstable crystal form and has no industrial utilization value, and Anatase type (Anatase) is called A type for short, and Rutile type (Rutile) is called R type for short, both have stable crystal lattices, are important white pigments and porcelain glaze materials, have superior whiteness, tinting strength, covering power, weather resistance, heat resistance and chemical stability compared with other white pigments, and particularly have no toxicity; sepiolite is an aqueous magnesium-rich silicate clay mineral with a layered chain structure. Orthorhombic or monoclinic systems, generally in the form of a mass, a soil or a fibrous aggregate. The color is white, light gray, dark gray, yellow brown, rose red, light blue green. The fresh surface is pearl-like and has soil-like luster after weathering. A hardness of 2 to 3 and a density of 2 to 2.5g/cm 3. Has slippery and astringent feeling, and can be used for sticking tongue. The sepiolite also has the performances of decoloring, heat insulation, corrosion resistance, radiation resistance, thermal stability and the like; the main component of the zeolite powder is silicon dioxide, and the zeolite powder has a spacious structure and a plurality of crystal holes and pore paths which are arranged orderly. Contains a large amount of ions and is quite active. Therefore, the zeolite powder is a good carrier of mineral trace elements; thereby improving the radial and tensile strength of the product.
In the invention, the non-toxic and halogen-free raw materials in the embodiment 1 and the embodiment 2 are adopted; thereby improving the flame retardant property of the flame retardant powder, and achieving the functions of no open fire, no smoke, no toxicity and no volatilization, and separating the flame retardant powder from a heat source, thereby achieving the effects of difficult combustion and non-combustible objects; further avoiding secondary harm of halogen to the environment and preventing the health of people from being influenced after the cigarette is inhaled into a human body.
The above embodiments are illustrative of the present invention, and are not intended to limit the present invention, and any simple modifications of the present invention are within the scope of the present invention.
Claims (3)
1. A halogen-free flame-retarding powder of inorganic mineral polymer fibre crystal is prepared from expandable graphite with fineness of 200-320 meshes, expanded vermiculite powder, aluminium hydroxide, silicon powder, zirconium silicate powder, magnesium hydroxide, silicon nitride, antimony trioxide, zinc borate, rutile titanium oxide powder, sepiolite powder and zeolite powder through proportional mixing.
2. The inorganic mineral polymeric fiber crystal halogen-free flame retardant powder according to claim 1, wherein: the components in the material A are distributed as follows according to the weight percentage: 8-10 parts of expandable graphite, 8-10 parts of expanded vermiculite powder, 8-10 parts of aluminum hydroxide, 2-8 parts of silica micropowder, 2-7 parts of zirconium silicate powder, 8-10 parts of magnesium hydroxide, 4-8 parts of silicon nitride, 4-7 parts of antimony trioxide, 5-9 parts of zinc borate, 2-7 parts of rutile titanium dioxide, 12-15 parts of sepiolite powder and 8-10 parts of zeolite powder.
3. A method for using inorganic mineral polymeric fiber crystal halogen-free flame retardant powder comprises cleaning a base material; then mixing the prepared flame-retardant powder with a high-temperature-resistant adhesive in a ratio of 1:1 or stirring the flame-retardant powder accounting for 40% and the high-temperature adhesive accounting for 60% to obtain a liquid coating; during construction, 5% -10% of water is added for regulation according to the viscosity of a finished product; after the adjustment is finished, the coating is uniformly sprayed on the substrate, after the first time of spraying, the coating is sprayed for the second time after the coating is dried on the substrate, and after the second time of drying, the coating is sprayed for the third time, wherein the spraying times are counted three times, so that the flame retardant property is more stable.
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| CN201811403005.3A CN111217551A (en) | 2018-11-23 | 2018-11-23 | Inorganic mineral polymeric fiber crystal halogen-free flame retardant powder |
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| CN201811403005.3A CN111217551A (en) | 2018-11-23 | 2018-11-23 | Inorganic mineral polymeric fiber crystal halogen-free flame retardant powder |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114654779A (en) * | 2021-12-22 | 2022-06-24 | 浙江华丰新材料股份有限公司 | Glass fiber reinforced plastic pipe gallery and preparation method thereof |
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Application publication date: 20200602 |