CN113998931A - Preparation method of kaolin polymer-based regenerated EPS (expandable polystyrene) building exterior wall thermal insulation material - Google Patents
Preparation method of kaolin polymer-based regenerated EPS (expandable polystyrene) building exterior wall thermal insulation material Download PDFInfo
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Abstract
The invention discloses a preparation method of a kaolin polymer-based regenerated EPS (expandable polystyrene) building exterior wall thermal insulation material, which comprises the following main components in percentage by mass: (composite base material) 90-100: (metakaolin) 10-25: (flame retardant) 2-5: (thermal stabilizer) 0.2-0.5: (mixing aid) 1-0.3: (flexibilizer) 5-7, (water glass) 8-14, (geopolymer gel) 30-50, and the balance: water, comprising the following seven steps. The invention can modify the recovered EPS base material by adding the flame retardant, the heat stabilizer, the mixed assistant and the flexibilizer, so that the EPS base material has the advantages of high flame retardance, high impact resistance, environmental protection, thermal stability, good mechanical property, easy processing and forming and the like, and the chemical activity of the EPS base material can be reduced by modifying geopolymer gelation, so that the EPS building exterior wall external heat insulation material has good chemical stability in an erosion environment, and the geopolymer gelation material replaces the traditional cement with pollution, so that the EPS heat insulation material has the advantages of low cost, environment-friendly production process and the like.
Description
Technical Field
The invention relates to the technical field of heat insulation materials, in particular to a preparation method of a kaolin polymer-based regenerated EPS (expandable polystyrene) building exterior wall heat insulation material.
Background
Under the background of environment-friendly and green environment in the world, the development of the building industry gradually tends to be energy-saving and environment-friendly, the improvement of wall surface structure protection and energy conservation becomes the key point in the aspect of building energy conservation, along with the continuous deepening of energy-saving work of house construction in China and the continuous improvement of energy-saving standards, a plurality of novel energy-saving technologies and materials are introduced and developed, and the wall surface structure is widely popularized and used in house construction.
Although the EPS material has good heat insulation performance, the EPS material is seriously oxidized before being recycled, so that the compactness, strength, impermeability and toughness of the EPS recycled material are reduced, the requirement of the domestic building external wall heat insulation material cannot be met, the requirement of the building external wall heat insulation material cannot be better met, and the EPS material needs to be improved and integrally adjusted so as to meet the heat insulation requirement.
Disclosure of Invention
The invention aims to provide a preparation method of a kaolin polymer-based regenerated EPS (expandable polystyrene) building exterior wall thermal insulation material, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
the preparation method of the kaolin polymer based regenerated EPS building exterior wall thermal insulation material comprises the following main components in percentage by mass: (composite base material) 90-100: (metakaolin) 10-25: (flame retardant) 2-5: (thermal stabilizer) 0.2-0.5: (mixing aid) 1-0.3: (flexibilizer) 5-7, (water glass) 8-14, (geopolymer gel) 30-50, and the balance: water, comprising the following seven steps:
the method comprises the following steps: calcining high-quality kaolin at the temperature of 705-850 ℃ to obtain metakaolin, and crushing and processing the metakaolin by an ultrafine ore grinding process (a grinding and stripping method, a high-pressure extrusion method and an airflow crushing method) to obtain metakaolin powder with the particle size of 0.1-100 microns;
step two: the recovered EPS material is cleaned, adhesion on the surface of the recovered EPS material is removed, moisture is removed through drying, and the dried EPS material is crushed through a crusher, so that 0.012g/cm3 polystyrene foam particles, namely EPS particles, are obtained;
step three: mixing the polystyrene foam particles (80-95%) obtained in the step two with the high impact polystyrene material particles (5-20%) to obtain a composite base material, and adding the metakaolin, the flame retardant, the heat stabilizer, the mixing aid and the toughening agent obtained in the step one into the composite base material to be mixed and stirred to obtain modified EPS;
step four: mixing industrial-grade water glass with 14.8g of sodium hydroxide (NaOH) to prepare alkaline water glass, thereby completing the preparation of the alkaline activator;
step five: 40-60 parts of compound silicon-aluminum powder, 70-90 parts of compound alkali activator, 5-15 parts of modifier and 2-6 parts of condensed phosphate accelerator are mixed to obtain modified geopolymer gel;
step six: adding the modified EPS obtained in the step three and the metakaolin obtained in the step one into a stirrer, slowly adding the alkali activator (water glass), the geopolymer gel and the water obtained in the step four, and uniformly stirring to obtain a regenerated EPS heat insulation raw material;
step seven: and pouring the heat-insulating raw material obtained in the sixth step into a mould, demoulding after forming, and maintaining for 24 hours at normal temperature to finally finish the preparation of the building exterior wall heat-insulating material.
Further, the flame retardant comprises a solid powder flame retardant and a liquid flame retardant (the mass ratio is 15-25: 1), wherein the solid powder flame retardant is selected from one or more of hexabromocyclododecane, tetrabromobisphenol A diallyl ether, decabromodiphenylethane, brominated epoxy oligomer and modified brominated epoxy copolymer without polybrominated biphenyl structure; the liquid flame retardant is selected from one or more of tri (2-chloropropyl) phosphate, triphenyl phosphate, tetraphenyl resorcinol double polyphosphate, tetraphenyl bisphenol A double polyphosphate and cyclic phosphate.
Further, the heat stabilizer is selected from one or more of tribasic lead sulfate, dibasic lead sulfate and calcium-zinc composite stabilizer; the mixing auxiliary agent comprises an antioxidant, a lubricant and a dispersant with the mass ratio of 40-60: 20-30: 20-30, wherein the antioxidant is one of tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid ] pentaerythritol ester or tri [2, 4-di-tert-butylphenyl ] phosphite, the lubricant is one of polyethylene wax or talcum powder, and the dispersant is EBS; the toughening agent comprises styrene-maleic anhydride copolymer and glass fiber.
Further, the geopolymer gelling comprises: 40-60 parts of compound silicon-aluminum powder, 70-90 parts of compound alkali activator, 5-15 parts of modifier and 2-6 parts of condensed phosphate accelerator, wherein the compound silicon-aluminum powder comprises 20-30 parts of metakaolin, 10-20 parts of fly ash, 5-10 parts of slag, 5-10 parts of steel slag, 4-6 parts of silica fume and 1-2 parts of nano silicon dioxide.
Further, the compound alkali activator comprises 50-70 parts of liquid sodium silicate, liquid potassium silicate or a combination thereof, 5-15 parts of solid sodium hydroxide, solid potassium hydroxide or a combination thereof and 5-20 parts of deionized water, wherein the sodium hydroxide or the potassium hydroxide is analytically pure, and the content of effective components is more than 95%; the modulus of the liquid sodium silicate or the liquid potassium silicate is 1.0 to 2.2, and the solid content is 30 to 60 percent. Further, the fly ash is first-grade ash with the particle size of 0.1-100 microns; the slag is 105-grade slag with the particle size of 0.1-100 microns; the steel slag is water quenching electric furnace steel slag, and the particle size is 0.1-100 microns; the particle size of the silica fume is 0.1-100 microns, and the nano silicon dioxide is 1-100 nanometers.
Compared with the prior art, the invention has the beneficial effects that: the preparation method of the kaolin polymer based regenerated EPS building exterior wall thermal insulation material can modify the recovered EPS base material by adding the flame retardant, the heat stabilizer, the mixed assistant and the flexibilizer, so that the EPS base material has the advantages of high flame retardance, high impact resistance, environmental protection, thermal stability, good mechanical property, easy processing and forming and the like, the high flame retardance of the EPS base material can be increased by adding the flame retardant, so that the EPS base material can effectively isolate a fire source when exposed to open fire, the practicability of the EPS building exterior wall thermal insulation material is improved, the flexibility of the EPS base material can be increased by the flexibilizer, the technical problem that the toughness can be reduced when the polystyrene foam strength is increased is solved, the technical effect of improving the toughness when the polystyrene foam strength is increased is achieved, the thermal stability of the EPS base material can be increased by the heat stabilizer, so that the EPS building exterior wall thermal insulation material does not deform in a high-temperature environment, the physical stability is improved, the oxidation resistance of the EPS base material can be improved by mixing the auxiliary agent, the service life of the EPS building outer wall external thermal insulation material is effectively prolonged, the compactness, the strength, the impermeability and the toughness of the EPS base material can be improved by the water glass, the requirement of the domestic building outer wall thermal insulation material is met, the chemical activity of the EPS building outer wall external thermal insulation material can be reduced by modified geopolymer gelation, therefore, the EPS building outer wall external thermal insulation material has good chemical stability in an erosion environment, the chemical resistance of the EPS building outer wall external thermal insulation material is improved, the traditional cement with pollution is replaced by the geopolymer gelation material, and the waste polystyrene foam is used as a thermal insulation main body, so that the kaolin base polymer-based regenerated EPS building outer wall external thermal insulation material has the advantages of low cost, environment-friendly production process and the like.
Drawings
FIG. 1 is a schematic diagram showing the proportion of the EPS building exterior wall external thermal insulation material of the present invention;
FIG. 2 is a schematic view of the preparation process of the EPS building exterior wall external thermal insulation material of the present invention;
FIG. 3 is a schematic view showing the gel composition of the modified geopolymer of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1
Referring to fig. 1-3, the present invention provides an embodiment: the preparation method of the kaolin polymer based regenerated EPS building exterior wall thermal insulation material comprises the following main components in percentage by mass: (composite base material) 90-100: (metakaolin) 10-25: (flame retardant) 2-5: (thermal stabilizer) 0.2-0.5: (mixing aid) 1-0.3: (flexibilizer) 5-7, (water glass) 8-14, (geopolymer gel) 30-50, and the balance: water, comprising the following seven steps:
the method comprises the following steps: calcining high-quality kaolin at the temperature of 705-850 ℃ to obtain metakaolin, and crushing and processing the metakaolin by an ultrafine ore grinding process (a grinding and stripping method, a high-pressure extrusion method and an airflow crushing method) to obtain metakaolin powder with the particle size of 0.1-100 microns;
step two: the recovered EPS material is cleaned, adhesion on the surface of the recovered EPS material is removed, the adhesion is prevented from affecting the later-stage preparation quality, the moisture is removed through drying, and the dried EPS material is crushed through a crusher, so that 0.012g/cm3 polystyrene foam particles, namely the EPS particles, are obtained;
step three: mixing the polystyrene foam particles (80-95%) obtained in the step two with the high impact polystyrene material particles (5-20%) to obtain a composite base material, and adding the metakaolin, the flame retardant, the heat stabilizer, the mixing aid and the toughening agent obtained in the step one into the composite base material to be mixed and stirred to obtain modified EPS;
step four: mixing industrial-grade water glass with 14.8g of sodium hydroxide (NaOH) to prepare alkaline water glass, thereby completing the preparation of an alkaline activator, and improving the compactness, strength, impermeability and toughness of the EPS substrate by using the alkaline activator;
step five: 40-60 parts of compound silicon-aluminum powder, 70-90 parts of compound alkali activator, 5-15 parts of modifier and 2-6 parts of condensed phosphate accelerator are mixed to obtain modified geopolymer gel;
step six: adding the modified EPS obtained in the step three and the metakaolin obtained in the step one into a stirrer, slowly adding the alkali activator (water glass), the geopolymer gel and the water obtained in the step four, and uniformly stirring to obtain a regenerated EPS heat insulation raw material;
step seven: pouring the heat-insulating raw material obtained in the step six into a mould, exhausting and vibrating uniformly through a compactor, demoulding after forming, maintaining the regenerated EPS building exterior wall heat-insulating material obtained after demoulding for 24 hours at normal temperature, and maintaining to improve the quality of the EPS building exterior wall heat-insulating material, thereby finally completing the preparation of the building exterior wall heat-insulating material.
Further, the flame retardant comprises a solid powder flame retardant and a liquid flame retardant (the mass ratio is 15-25: 1), wherein the solid powder flame retardant is selected from one or more of hexabromocyclododecane, tetrabromobisphenol A diallyl ether, decabromodiphenylethane, brominated epoxy oligomer and modified brominated epoxy copolymer without polybrominated biphenyl structure; the liquid flame retardant is selected from one or more of tri (2-chloropropyl) phosphate, triphenyl phosphate, tetraphenyl resorcinol double polyphosphate, tetraphenyl bisphenol A double polyphosphate and cyclic phosphate, and can increase the high flame retardance of the EPS base material, so that the EPS base material can effectively isolate a fire source when exposed to open fire, and the practicability of the EPS building exterior wall external thermal insulation material is improved.
Further, the heat stabilizer is selected from one or more of tribasic lead sulfate, dibasic lead sulfate and calcium-zinc composite stabilizers, and the heat stability of the EPS base material can be improved through the heat stabilizer, so that the EPS building exterior wall external heat insulation material does not deform in a high-temperature environment, the physical stability is improved, and the heat resistance of the EPS building exterior wall external heat insulation material is improved; the mixing auxiliary agent comprises an antioxidant, a lubricant and a dispersant with the mass ratio of 40-60: 20-30: 20-30, wherein the antioxidant is one of tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid ] pentaerythritol ester or tris [ 2.4-di-tert-butylphenyl ] phosphite, the lubricant is one of polyethylene wax or talcum powder, the dispersant is EBS, the oxidation resistance of the EPS base material can be increased by adding the mixing aid, the oxidation speed of the EPS building exterior wall external thermal insulation material is slowed down, and the service life of the EPS building exterior wall external thermal insulation material is effectively prolonged; the toughening agent comprises styrene-maleic anhydride copolymer and glass fiber, the flexibility of the EPS building exterior wall external thermal insulation material can be improved by adding the toughening agent, the technical problem that the toughness of the polystyrene foam can be reduced by increasing the strength of the polystyrene foam is solved, and the technical effect of improving the toughness of the polystyrene foam while increasing the strength of the polystyrene foam is achieved.
Further, the geopolymer gelling comprises: 40-60 parts of compound silica-alumina powder, 70-90 parts of compound alkali activator, 5-15 parts of modifier and 2-6 parts of condensed phosphate accelerator, wherein the compound silica-alumina powder comprises 20-30 parts of metakaolin, 10-20 parts of fly ash, 5-10 parts of slag, 5-10 parts of steel slag, 4-6 parts of silica fume and 1-2 parts of nano silicon dioxide.
Further, the compound alkali activator comprises 50-70 parts of liquid sodium silicate, liquid potassium silicate or a combination thereof, 5-15 parts of solid sodium hydroxide, solid potassium hydroxide or a combination thereof and 5-20 parts of deionized water, wherein the sodium hydroxide or the potassium hydroxide is analytically pure, and the content of effective components is more than 95%; the modulus of the liquid sodium silicate or the liquid potassium silicate is 1.0 to 2.2, and the solid content is 30 to 60 percent. Further, the fly ash is first-grade ash with the particle size of 0.1-100 microns; the slag is 105-grade slag with the particle size of 0.1-100 microns; the steel slag is water quenching electric furnace steel slag, and the particle size is 0.1-100 microns; the particle size of the silica fume is 0.1-100 microns, and the nano silicon dioxide is 1-100 nanometers.
Example 2
The preparation process of the regenerated EPS building exterior wall thermal insulation material comprises the following steps:
the EPS material is used as a heat insulation material which is widely applied at present, and the production process mainly comprises the steps of pretreatment of the EPS material, improvement of processing performance, proportioning and mixing, injection molding and the like.
1. Modification of EPS substrates
1.1 modification of EPS substrates
Because the strength and plasticity of the waste polystyrene foam plastics (EPS) can be obviously reduced along with the oxidation time, the performance of the EPS building exterior wall external thermal insulation material is reduced before preparation, the mechanical property, the corrosion resistance, the air tightness, the oxidation property, the appearance quality and the like of the EPS building exterior wall external thermal insulation material prepared subsequently can be influenced, and therefore, the EPS building exterior wall thermal insulation material has the advantages of high flame retardance, high impact resistance, environmental protection, thermal stability, good mechanical property, easiness in processing and forming and the like before injection molding preparation, and the thermal insulation property and the durability of the EPS building exterior wall thermal insulation material are ensured.
1.2 hybrid treatment of EPS substrates
Because the strength and plasticity of the waste polystyrene foam plastic can be obviously reduced along with the oxidation time, a modifier is generally added, the modifier is mixed with the EPS material by adjusting the proportion of the modifier, so that the compactness, the strength, the impermeability and the toughness of the regenerated EPS building exterior wall heat-insulating material are changed, the EPS material is deteriorated by a flame retardant, a heat stabilizer, a mixing aid, a toughening agent and water glass, a large amount of research is carried out on the modification process of the regenerated EPS material at home and abroad, and great progress is made.
2. Proportioned mixing of EPS base material
2.1, replacing cement with serious pollution by geopolymer gel, wherein the geopolymer gel is a novel inorganic material and is generated by dissolving and geopolymerizing active silica-alumina material under alkaline environment, a matrix is composed of a three-dimensional space network structure formed by polymerizing [ SiO4] tetrahedra and [ AlO4] tetrahedra, the chemical structure presents amorphous to semi-crystalline phase, the compressive strength can reach 40-80MPa, and the fire-resistant temperature can reach 900-. Compared with the traditional portland cement, the geopolymer gel has more excellent thermal stability and corrosion resistance. Meanwhile, the carbon emission and the energy consumption in the production process of the geopolymer gel are respectively 20% and 40% of those of common portland cement, so that the geopolymer gel has an obvious low-carbon characteristic, and has high chemical activity, so that the chemical stability of the EPS base material in an erosion environment still exists, and the chemical resistance of the EPS building outer wall external thermal insulation material is improved.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (6)
1. A preparation method of kaolin polymer based regenerated EPS building exterior wall thermal insulation material comprises the following preparation processes: modified kaolin → regenerated EPS pretreatment → modified regenerated EPS → alkaline activator preparation → geopolymer gelling modification preparation → raw materials mixed according to proportion → injection molding, and the mass ratio of the main components is as follows: (composite base material) 90-100: (metakaolin) 10-25: (flame retardant) 2-5: (thermal stabilizer) 0.20.2-0.5: (mixing aid) 1-0.3: (flexibilizer) 5-7, (water glass) 8-14, (geopolymer gel) 30-50, and the balance: water, characterized in that: the method comprises the following seven steps:
the method comprises the following steps: calcining high-quality kaolin at the temperature of 705-850 ℃ to obtain metakaolin, and crushing and processing the metakaolin by an ultrafine ore grinding process (a grinding and stripping method, a high-pressure extrusion method and an airflow crushing method) to obtain metakaolin powder with the particle size of 0.1-100 microns;
step two: the recovered EPS material is cleaned, adhesion on the surface of the recovered EPS material is removed, moisture is removed through drying, and the dried EPS material is crushed through a crusher, so that 0.012g/cm3 polystyrene foam particles, namely EPS particles, are obtained;
step three: mixing the polystyrene foam particles (80-95%) obtained in the step two with the high impact polystyrene material particles (5-20%) to obtain a composite base material, and adding the metakaolin, the flame retardant, the heat stabilizer, the mixing aid and the toughening agent obtained in the step one into the composite base material to be mixed and stirred to obtain modified EPS;
step four: mixing industrial-grade water glass with 14.8g of sodium hydroxide (NaOH) to prepare alkaline water glass, thereby completing the preparation of the alkaline activator;
step five: 40-60 parts of compound silicon-aluminum powder, 70-90 parts of compound alkali activator, 5-15 parts of modifier and 2-6 parts of condensed phosphate accelerator are mixed to obtain modified geopolymer gel;
step six: adding the modified EPS obtained in the step three and the metakaolin obtained in the step one into a stirrer, slowly adding the alkali activator (water glass), the geopolymer gel and the water obtained in the step four, and uniformly stirring to obtain a regenerated EPS heat insulation raw material;
step seven: and pouring the heat-insulating raw material obtained in the sixth step into a mould, demoulding after forming, and maintaining for 24 hours at normal temperature to finally finish the preparation of the building exterior wall heat-insulating material.
2. The method for preparing the kaolin polymer-based regenerated EPS building exterior wall thermal insulation material according to claim 1, which is characterized in that: the flame retardant comprises a solid powder flame retardant and a liquid flame retardant (the mass ratio is 15-25: 1), wherein the solid powder flame retardant is selected from one or more of hexabromocyclododecane, tetrabromobisphenol A diallyl ether, decabromodiphenylethane, brominated epoxy oligomers and modified brominated epoxy copolymer without polybrominated biphenyl structure; the liquid flame retardant is selected from one or more of tri (2-chloropropyl) phosphate, triphenyl phosphate, tetraphenyl resorcinol double polyphosphate, tetraphenyl bisphenol A double polyphosphate and cyclic phosphate.
3. The method for preparing the kaolin polymer-based regenerated EPS building exterior wall thermal insulation material according to claim 1, which is characterized in that: the heat stabilizer is selected from one or more of tribasic lead sulfate, dibasic lead sulfate and calcium-zinc composite stabilizer; the mixing auxiliary agent comprises an antioxidant, a lubricant and a dispersant with the mass ratio of 40-60: 20-30: 20-30, wherein the antioxidant is one of tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid ] pentaerythritol ester or tri [2, 4-di-tert-butylphenyl ] phosphite, the lubricant is one of polyethylene wax or talcum powder, and the dispersant is EBS; the toughening agent comprises styrene-maleic anhydride copolymer and glass fiber.
4. The method for preparing the kaolin polymer-based regenerated EPS building exterior wall thermal insulation material according to claim 1, which is characterized in that: the geopolymer gelling comprises: 40-60 parts of compound silicon-aluminum powder, 70-90 parts of compound alkali activator, 5-15 parts of modifier and 2-6 parts of condensed phosphate accelerator, wherein the compound silicon-aluminum powder comprises 20-30 parts of metakaolin, 10-20 parts of fly ash, 5-10 parts of slag, 5-10 parts of steel slag, 4-6 parts of silica fume and 1-2 parts of nano silicon dioxide.
5. The method for preparing the kaolin polymer-based regenerated EPS building exterior wall thermal insulation material according to claim 4, characterized in that: the compound alkali activator comprises 50-70 parts of liquid sodium silicate, liquid potassium silicate or a combination thereof, 5-15 parts of solid sodium hydroxide, solid potassium hydroxide or a combination thereof and 5-20 parts of deionized water, wherein the sodium hydroxide or the potassium hydroxide is analytically pure, and the content of effective components is more than 95%; the modulus of the liquid sodium silicate or the liquid potassium silicate is 1.0 to 2.2, and the solid content is 30 to 60 percent.
6. The method for preparing the kaolin polymer-based regenerated EPS building exterior wall thermal insulation material according to claim 4, characterized in that: the fly ash is first-grade ash with the particle size of 0.1-100 microns; the slag is 105-grade slag with the particle size of 0.1-100 microns; the steel slag is water quenching electric furnace steel slag, and the particle size is 0.1-100 microns; the particle size of the silica fume is 0.1-100 microns, and the nano silicon dioxide is 1-100 nanometers.
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| CN103539415A (en) * | 2013-11-03 | 2014-01-29 | 桂林理工大学 | Preparation method of kaolin geopolymer-based regenerated EPS (Expandable Polystyrene) insulating material of exterior wall of building |
| CN103756172A (en) * | 2013-12-12 | 2014-04-30 | 连云港海水化工有限公司 | High flame-retardant high impact-resistant regenerated polystyrene (EPS) particles, and preparation method thereof |
| CN107746212A (en) * | 2017-10-18 | 2018-03-02 | 浙江大学 | Modified enhanced ground oligomer gel material of one kind and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103539415A (en) * | 2013-11-03 | 2014-01-29 | 桂林理工大学 | Preparation method of kaolin geopolymer-based regenerated EPS (Expandable Polystyrene) insulating material of exterior wall of building |
| CN103756172A (en) * | 2013-12-12 | 2014-04-30 | 连云港海水化工有限公司 | High flame-retardant high impact-resistant regenerated polystyrene (EPS) particles, and preparation method thereof |
| CN107746212A (en) * | 2017-10-18 | 2018-03-02 | 浙江大学 | Modified enhanced ground oligomer gel material of one kind and preparation method thereof |
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