CN108640644B - Preparation process of heat insulation board with built-in steel wire mesh - Google Patents
Preparation process of heat insulation board with built-in steel wire mesh Download PDFInfo
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- CN108640644B CN108640644B CN201810595246.6A CN201810595246A CN108640644B CN 108640644 B CN108640644 B CN 108640644B CN 201810595246 A CN201810595246 A CN 201810595246A CN 108640644 B CN108640644 B CN 108640644B
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- steel wire
- wire mesh
- sintering
- built
- cloth
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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
- C04B32/00—Artificial stone not provided for in other groups of this subclass
- C04B32/02—Artificial stone not provided for in other groups of this subclass with reinforcements
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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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
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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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/30—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values
- C04B2201/32—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values for the thermal conductivity, e.g. K-factors
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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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
Abstract
The invention provides a preparation process of a built-in steel wire mesh insulation board, which adopts a semi-dry pressing built-in steel wire mesh sintering process, wherein the process comprises the steps of material preparation, ageing, semi-dry pressing, drying, sintering and the like, the density and the heat conductivity coefficient of a board body are controlled by a compression ratio control technical means (the volume compression ratio is 1: 0.3-0.5), the light weight and the low conductivity of the board body are realized, and the structure that steel wire meshes are distributed in a cloth layer when the semi-dry pressing mould is used for distributing materials is adopted, so that the overall strength of the board body is enhanced, and the high strength of the board body is realized. The sintering technology is adopted, so that the high-temperature cementing material is vitrified, the expanded perlite particles and the steel wire mesh are condensed together when being cooled, the compressive strength is more than or equal to 3.6MPa, the durability is as long as the building life, and the strength and the durability of the plate are realized.
Description
Technical Field
The invention relates to the technical field of manufacturing processes of light partition boards for buildings, in particular to a manufacturing process of a built-in steel wire mesh insulation board.
Background
Against the background of the national advocated prefabricated construction, the lightweight insulating partition panels for prefabricated construction are the most prominent bulk materials for outsourcing except for factory prefabricated structural components. At present, the used light partition boards mainly include: the concrete slab is characterized by comprising aerated concrete blocks, ceramsite concrete slabs, polyphenyl particle added concrete slabs, gypsum composite boards and the like, wherein the density is 600-1000 kg/cm3, the heat conductivity coefficient is 0.2-0.58 w/(m.k), the preparation process mainly adopts a non-sintered gel material coagulation process, the gel material is coagulated and molded by the characteristics of the gel material, the gel material is not calcined, the content of the preparation technology is low, and the performances such as heat preservation, sound insulation, durability and the like are poor.
In application number 201711283918.1's chinese patent, a prefabricated insulation board is disclosed, with the direct prefabrication of steel wire net piece in the concrete protective layer, ensure the installation firmness of insulation board, the easy problem that drops of insulation board when solving the use. The heat-insulating board has no improvement on the performances of heat insulation, sound insulation, durability and the like of the heat-insulating board, such as heat conductivity coefficient, density, compressive strength and the like.
Disclosure of Invention
The invention aims to provide a preparation process of a built-in steel wire mesh insulation board, and the process is used for solving the problems of overlarge density, overhigh heat conductivity coefficient, poor durability and the like of a light partition board required by the conventional fabricated building.
The invention relates to a preparation process of a built-in steel wire mesh insulation board, which specifically comprises the following steps:
(1) preparing materials: mixing expanded perlite: cement = 1: 0.5-1: 0.8Wt% of the raw materials are proportioned and mixed evenly;
(2) and (3) staling: aging the uniformly mixed batch for 6-10 hours;
(3) semi-dry pressing and forming: after the aged mixture is filled in a cloth form of a 'cloth-cloth net-cloth' mould, pressurizing is carried out, a steel wire net is distributed in the middle of a mould cavity during forming, and the volume compression ratio is 1: 0.3-0.5 during pressurizing;
(4) drying and sintering: drying the pressed blank at 80-120 ℃ for 30-60 min, sintering in a sintering roller kiln at the sintering temperature: the sintering period is 60min to 120min at the temperature of 800 ℃ to 1000 ℃.
In the technical scheme, the cementing material is a composite slurry of fusible silicate and an organic body reinforcing agent, and the proportion is 9: 1 Wt%.
In the above technical scheme, the expanded perlite selected for use in the ingredients has a density: 70-120 kg/cm 3.
In the technical scheme, the melting temperature of the selected fusible silicate is 700-850 ℃.
In the technical scheme, the semi-dry pressed steel wire mesh is a galvanized steel wire mesh with 50mm meshes and 0.5mm diameter.
The core of the invention is: the preparation process of the heat-insulation board with the built-in steel wire mesh comprises the following related process parameters: selecting the density of expanded perlite: 70-120 kg/cm 3; the melting temperature of the fusible silicate is 700-850 ℃; the steel wire mesh is a galvanized steel wire mesh with 50mm meshes and 0.5mm diameter, and the distance between the steel wire mesh and the plate edge is 100 mm; the compression volume ratio is 1: 0.3-0.5; the drying temperature is 80-120 ℃; the firing temperature is 800-1000 ℃; the sintering period is 70-90 min. Specifically, a semi-dry pressing technology is adopted, the density and the heat conductivity coefficient of the plate body are controlled by a technical means of controlling a compression ratio (the volume compression ratio is 1: 0.3-0.5), the light weight and the low conductivity of the plate body are realized, and the structure that a steel wire mesh is distributed in a cloth layer when the semi-dry pressing mould is used for distributing materials is adopted, so that the overall strength of the plate body is enhanced, and the high strength of the plate body is realized. The sintering technology is adopted, so that the high-temperature cementing material is vitrified, the expanded perlite particles and the steel wire mesh are condensed together when being cooled, the compressive strength is more than or equal to 3.6MPa, the durability is as long as the building life, and the strength and the durability of the plate are realized.
Drawings
FIG. 1 is a flow chart of a preparation process of the heat-insulation board with the built-in steel wire mesh.
Detailed Description
Embodiment 1: mixing the expanded perlite granules and the fusible silicate slurry according to the proportion of 1: 0.5 percent (Wt%) is evenly mixed, and a green body reinforcing agent accounting for 0.2 percent of the total material amount is added to prepare a mixture required by molding. The mixture is filled in a mode of cloth by a mould of 'cloth-cloth net-cloth', and then is pressurized. The pressure was released when the volume compression was 35% of the cloth volume, after which the green body was ejected from the die. And drying the green body at 110 ℃, and sintering in a roller kiln at 920 ℃ for 90 min. The density of the sintered plate is 420kg/cm3, the thermal conductivity coefficient is 0.136 w/(m.k), and the compressive strength is 3.657 MPa.
Embodiment 2: according to the formula of' expanded perlite: cement = 1: 0.55' of ingredients. Wherein the particle size of the expanded perlite is 20-60 meshes, the cementing material is a composite slurry of fusible silicate and organic green body reinforcing agent, and the mixture ratio is 9: 1, the concentration of the composite slurry is 36 percent. And (3) ageing the uniformly mixed batch for 6 hours. And (3) carrying out semi-dry pressing forming on the aged mixture, wherein during forming, the steel wire mesh is distributed in the middle of the die cavity, and the volume compression ratio is 1: 0.35. The pressed green body was dried at 120 ℃. And then sintering in a sintering roller kiln at the sintering temperature of 950 ℃ for 80 min. The density of the sintered plate is 395kg/cm3, the thermal conductivity coefficient is 0.113 w/(m.k), and the compressive strength is 3.612 MPa.
The innovation of the invention is that the expanded perlite aggregate is bonded into a whole by adopting the mode of vitrifying the fusible silicate at high temperature and cooling and bonding. During the concrete implementation, the steel wire mesh is uniformly distributed in the blank during the material distribution, the volume limitation is adopted during the pressurization, the drying is carried out at 80-120 ℃, the blank is subjected to the control of a series of process parameters such as sintering at 800-1000 ℃ and the like, and the product with performance indexes superior to those of the product prepared by the non-sintered gel material coagulation process is obtained. The density of the prepared product is 380-600 kg/cm3, the heat conductivity coefficient is 0.09-0.2 w/(m.k), and the compressive strength is more than or equal to 3.6 MPa.
Claims (1)
1. A preparation process of a built-in steel wire mesh insulation board is characterized by comprising the following steps: (1) preparing materials: mixing expanded perlite: cement = 1: 0.5-1: 0.8wt% of the raw materials are proportioned and mixed evenly; wherein the cementing material is a composite slurry of fusible silicate and an organic body reinforcing agent, and the mixture ratio is 9: 1wt%, wherein the density of the expanded perlite selected for the formulation is: 70 to 120kg/cm3 The melting temperature of the selected fusible silicate is 700-850 ℃;
(2) and (3) staling: aging the uniformly mixed batch for 6-10 hours; (3) semi-dry pressing and forming: after the aged mixture is filled in a cloth form of a 'cloth-cloth net-cloth' mould, pressurizing is carried out, and a steel wire mesh is distributed in the middle of a mould cavity during forming, wherein the steel wire mesh is a galvanized steel mesh with 50mm meshes and 0.5mm of diameter, and the volume compression ratio is 1: 0.3-0.5 during pressurizing; (4) drying and sintering: drying the pressed blank at 80-120 ℃ for 30-60 min, sintering in a sintering roller kiln at the sintering temperature: the sintering period is 60min to 120min at the temperature of 800 ℃ to 1000 ℃.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810595246.6A CN108640644B (en) | 2018-06-11 | 2018-06-11 | Preparation process of heat insulation board with built-in steel wire mesh |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810595246.6A CN108640644B (en) | 2018-06-11 | 2018-06-11 | Preparation process of heat insulation board with built-in steel wire mesh |
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| CN108640644A CN108640644A (en) | 2018-10-12 |
| CN108640644B true CN108640644B (en) | 2021-03-23 |
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| CN109808043B (en) * | 2019-02-27 | 2021-01-01 | 咸阳陶瓷研究设计院有限公司 | Method for enhancing strength of insulation board |
| CN112621987A (en) * | 2020-12-04 | 2021-04-09 | 上海万科企业有限公司 | PC heat-insulation integrated plate and production method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1101334A (en) * | 1994-03-03 | 1995-04-12 | 蒋里军 | Hot shaping porous ceramics |
| CN1110670A (en) * | 1994-04-25 | 1995-10-25 | 蒋里军 | Method of production of porous ceramics material with garbage and its ceramics material and appliance |
| WO2012031762A1 (en) * | 2010-09-09 | 2012-03-15 | Crupe Systems International (Ip) Llc | Aqueous gypsum plaster-cement composition and its use |
| CN103570328A (en) * | 2012-07-25 | 2014-02-12 | 咸阳陶瓷研究设计院 | Combined manufacturing method of building exterior-wall thermal-insulation material |
| CN104844142A (en) * | 2015-04-24 | 2015-08-19 | 中国地质大学（北京） | Novel expanded perlite heat insulation board and preparation method thereof |
-
2018
- 2018-06-11 CN CN201810595246.6A patent/CN108640644B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1101334A (en) * | 1994-03-03 | 1995-04-12 | 蒋里军 | Hot shaping porous ceramics |
| CN1110670A (en) * | 1994-04-25 | 1995-10-25 | 蒋里军 | Method of production of porous ceramics material with garbage and its ceramics material and appliance |
| WO2012031762A1 (en) * | 2010-09-09 | 2012-03-15 | Crupe Systems International (Ip) Llc | Aqueous gypsum plaster-cement composition and its use |
| CN103570328A (en) * | 2012-07-25 | 2014-02-12 | 咸阳陶瓷研究设计院 | Combined manufacturing method of building exterior-wall thermal-insulation material |
| CN104844142A (en) * | 2015-04-24 | 2015-08-19 | 中国地质大学（北京） | Novel expanded perlite heat insulation board and preparation method thereof |
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| CN108640644A (en) | 2018-10-12 |
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