CN113681708A - Manufacturing method of glass fiber reinforced concrete slab - Google Patents
Manufacturing method of glass fiber reinforced concrete slab Download PDFInfo
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- CN113681708A CN113681708A CN202111064774.7A CN202111064774A CN113681708A CN 113681708 A CN113681708 A CN 113681708A CN 202111064774 A CN202111064774 A CN 202111064774A CN 113681708 A CN113681708 A CN 113681708A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
- B28B13/02—Feeding the unshaped material to moulds or apparatus for producing shaped articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
- B28B23/022—Means for inserting reinforcing members into the mould or for supporting them in the mould
Abstract
The invention relates to a manufacturing method of a glass fiber reinforced concrete plate. The method comprises the steps of mixing and arranging the glass columns and the thin hollow glass tubes according to a certain proportion, then loading the glass columns and the thin hollow glass into the thick hollow glass tubes together, stretching and forming to obtain glass fibers, and pouring rubber into the drawn glass and then continuing to draw, so that the overall toughness of the glass fibers is greatly improved, and then weaving into a net, so that the long-range strength and toughness of the glass fibers are greatly improved; the glass fiber and the concrete are combined at multiple levels, so that the strength and the toughness of the concrete can be greatly improved; meanwhile, different glass fiber densities are used in each level, the outer layer uses higher glass fiber density, the shock resistance can be improved, and the inner layer uses lower-density glass fiber net, so that the condition of layered fracture caused by the fact that the inner layer of concrete is occupied by glass fibers can be prevented.
Description
Technical Field
The invention relates to the field of new engineering materials, in particular to a manufacturing method of a glass fiber reinforced concrete slab.
Background
Glass fiber (Fiberglass) is an inorganic non-metallic material with excellent performance, has various varieties, has the advantages of good insulativity, strong heat resistance, good corrosion resistance and high mechanical strength, but has the defects of brittleness and poor wear resistance. It is made up by using six kinds of mineral of pyrophyllite, quartz sand, limestone, dolomite, borocalcite and boromagnesite as raw material through the processes of high-temp. melting, wire-drawing, winding and weaving, etc., and is equivalent to 1/20-1/5 of a hair, and every bundle of fibre precursor is formed from several hundreds of monofilaments and even thousands of monofilaments. Glass fibers are commonly used as reinforcing materials in composite materials, electrical and thermal insulation materials, circuit substrates, and other various fields of the national economy.
Publication No. CN105971194B provides a light-transmitting concrete slab with wire drawing effect and a manufacturing method thereof, wherein a glass fiber mesh cloth layer is arranged between every two adjacent optical fiber cloth layers; the optical fiber cloth layer comprises a plurality of optical fibers which are sequentially arranged on the same plane, and each optical fiber is coated with a coupling agent coating. The invention enhances the aesthetic property of the product and greatly improves the strength of the product. The publication No. CN108468409A discloses a fabric reinforced concrete and glass fiber reinforced plastic combined load-bearing precast slab, which can be configured with FRP stress bars along the length direction of a C-shaped section bar according to the requirement of bearing capacity, so that the strength of the concrete and the glass fiber reinforced plastic is fully utilized, and the precast slab can be used as a wall body and a floor slab for bearing as a reinforced concrete slab. However, in actual use, the glass fiber is generally short in length, so that the long-range strength is insufficient; and because glass fiber is brittle, when the glass fiber is subjected to large impact, the glass fiber is insufficient in toughness and easy to break.
Disclosure of Invention
In view of the above, in order to solve the above problems, a method for manufacturing a glass fiber reinforced concrete slab is provided, which includes the following steps:
step 1: the glass fiber is stretched and formed, the glass column and the thin hollow glass tube are mixed and arranged according to a certain proportion, then the glass column and the thin hollow glass are put into the thick hollow glass tube together, and the glass fiber is obtained through stretching and forming;
step 2: pouring rubber, namely pouring rubber into the glass fiber formed by stretching in the step 1, and performing secondary drawing after pouring the rubber;
and step 3: weaving the glass fiber obtained in the step 2 after the secondary drawing into a net according to a preset shape;
and 4, step 4: and (3) constructing a concrete slab by using the glass fiber woven into the net as a framework, and performing heat preservation and maintenance to obtain the glass fiber reinforced concrete slab.
The steps of the glass fiber stretch forming and glue pouring are as follows:
mixing the glass column and the thin hollow glass tube according to a preset ratio, wherein the ratio of the glass column to the thin hollow glass tube is 1:1 to 1: 2; the outer diameters of the glass column and the thin hollow glass tube are the same and are 5-8mm, and the inner diameter of the thin hollow glass tube is 3-5 mm;
filling the glass column and the thin hollow glass tube into the thick hollow glass tube, wherein the outer diameter of each thick hollow glass tube is 30-50mm, and the inner diameter is 25-45 mm; a plurality of glass columns and thin hollow glass tubes can be filled in the thick hollow glass tube side by side;
heating the filled thick hollow glass tube to 800 ℃ in a high-temperature furnace to soften the glass tube, then adopting a vertical drawing mode to elongate the thick hollow glass tube, and carrying out primary drawing to ensure that the outer diameter of the thick hollow glass tube reaches 10-15 mm;
filling fluororubber into the thick hollow glass tube subjected to primary drawing, so that the thick hollow glass tube and the thin hollow glass tube are filled with the fluororubber;
and (3) carrying out secondary drawing on the rough hollow glass tube filled with the fluororubber at 500-550 ℃ to enable the outer diameter of the rough hollow glass tube to be less than 0.2mm, and obtaining the glass fiber.
The toughness of the glass fiber drawn twice after glue pouring is greatly improved, and the glass fiber can be woven into a net, and the method specifically comprises the following steps:
and rolling the glass fibers subjected to secondary drawing into glass fiber bundles according to the number of 50-150 glass fibers per bundle, arranging the glass fiber bundles according to the distance of 100-200mm, criss-cross forming a grid shape, and firmly bonding the crossed positions of the glass fiber bundles by using aqueous polyurethane adhesive to obtain the glass fiber bundle net.
The concrete steps of constructing the concrete slab by using the glass fiber woven into the net as the framework are as follows:
selecting a glass fiber bundle net with the distance of 100mm to 150mm as a lowest net, fixing the lowest net above the concrete mould, ensuring that the distance between the lowest net and a bottom plate of the concrete mould is 5-8mm, and spraying water to wet the whole lowest net;
filling the mixed concrete slurry into the concrete mould for the first time to ensure that the height of the concrete is 10-20 mm;
selecting a glass fiber bundle net with the distance of 150mm to 200mm as a second layer net, spraying water to wet the whole second layer net, placing the second layer net above concrete, and vibrating to enable the second layer net to be well combined with concrete slurry;
filling the mixed concrete slurry into the concrete mould for the second time to ensure that the height of the concrete is 30-40 mm;
selecting a glass fiber bundle net with the distance of 150mm to 200mm as a third layer net, spraying water to wet the whole third layer net, placing the third layer net above concrete, and vibrating to enable the third layer net to be well combined with concrete slurry;
filling the mixed concrete slurry into the concrete mould for the third time to ensure that the height of the concrete is 50-60 mm;
selecting a glass fiber bundle net with the distance of 100mm to 150mm as a fourth layer net, spraying water to enable the fourth layer net to be soaked in the whole body, placing the fourth layer net above concrete, vibrating to enable the fourth layer net to be well combined with concrete slurry, and enabling the fourth layer net to be immersed in the concrete in the whole body.
The concrete slurry comprises cement, quartz sand, light aggregate and a water reducing agent, wherein the weight ratio of the defoaming agent is 1: 1: 0.14: 0.02: 0.1, and the water-cement ratio is controlled below 0.15.
After the fourth layer of net and the concrete slurry are well combined through vibration, the fourth layer of net is not directly immersed into the concrete, and the mixed concrete slurry is filled into the concrete mould for the fourth time, so that the fourth layer of net is entirely immersed into the concrete.
When the thick hollow glass tube is drawn for the first time, an integral heating mode is adopted, the thick hollow glass tube is vertically placed and integrally heated, and the drawing speed is required to be between 1m/min and 1.5 m/min;
and during the second drawing, a local heating mode is adopted, the width of 50cm of the length of one end of the thick hollow glass tube is selected for heating, and the thick hollow glass tube is drawn in the heating process, wherein the drawing speed is between 2m/min and 2.5 m/min.
Concrete heat preservation and maintenance parameters are as follows:
stage 1, humidity is 35-60% at 35-50 ℃, and curing time is not less than 72 hours;
and (2) stage: spraying water to the surface of the concrete every day at room temperature with the humidity of 35-60% and the curing time of not less than 10 days, wherein the water spraying amount per unit area is required to reach 200mL/m2。
The glass fiber is broken in the drawing process, and can be used as long as the length of the glass fiber is more than 500 mm;
if the length of the glass fibers constituting the glass fiber bundle is insufficient, the glass fibers are directly used in an overlapping manner.
The invention has the beneficial effects that:
the invention uses the method that the glass column and the thin hollow glass tube are mixed and arranged according to a certain proportion, then the glass column and the thin hollow glass are put into the thick hollow glass tube together, and are stretched and molded to obtain the glass fiber, and the glass after being drawn is filled with rubber and then is continuously drawn, thereby greatly improving the integral toughness of the glass fiber, and then the glass fiber is woven into a net, and the long-range strength and the toughness of the glass fiber are greatly improved;
the glass fiber and the concrete are combined at multiple levels, so that the strength and the toughness of the concrete can be greatly improved; meanwhile, different glass fiber densities are used in each level, the outer layer uses higher glass fiber density, the shock resistance can be improved, and the inner layer uses lower-density glass fiber net, so that the condition of layered fracture caused by the fact that the inner layer of concrete is occupied by glass fibers can be prevented.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosed subject matter, are incorporated in and constitute a part of this specification. The drawings illustrate the implementations of the disclosed subject matter and, together with the detailed description, serve to explain the principles of implementations of the disclosed subject matter. No attempt is made to show structural details of the disclosed subject matter in more detail than is necessary for a fundamental understanding of the disclosed subject matter and various modes of practicing the same.
FIG. 1 is a schematic view showing the shape structure of a glass fiber bundle web of the present invention;
FIG. 2 is a schematic cross-sectional view of a thick glass tube according to the present invention;
fig. 3 is a schematic view of the concrete layer structure of the present invention.
Detailed Description
The advantages, features and methods of accomplishing the same will become apparent from the drawings and the detailed description that follows.
Example 1:
a manufacturing method of a glass fiber reinforced concrete slab comprises the following steps:
step 1: the glass fiber is stretched and formed, the glass column and the thin hollow glass tube are mixed and arranged according to a certain proportion, then the glass column and the thin hollow glass are put into the thick hollow glass tube together, and the glass fiber is obtained through stretching and forming;
step 2: pouring rubber, namely pouring rubber into the glass fiber formed by stretching in the step 1, and performing secondary drawing after pouring the rubber;
and step 3: weaving the glass fiber obtained in the step 2 after the secondary drawing into a net according to a preset shape;
and 4, step 4: and (3) constructing a concrete slab by using the glass fiber woven into the net as a framework, and performing heat preservation and maintenance to obtain the glass fiber reinforced concrete slab.
The steps of the glass fiber stretch forming and glue pouring are as follows:
mixing the glass column and the thin hollow glass tube according to a preset ratio, wherein the ratio of the glass column to the thin hollow glass tube is 1:1 to 1: 2; the outer diameters of the glass column and the thin hollow glass tube are the same and are 5-8mm, and the inner diameter of the thin hollow glass tube is 3-5 mm;
filling the glass column and the thin hollow glass tube into the thick hollow glass tube, wherein the outer diameter of each thick hollow glass tube is 30-50mm, and the inner diameter is 25-45 mm; a plurality of glass columns and thin hollow glass tubes can be filled in the thick hollow glass tube side by side;
heating the filled thick hollow glass tube to 800 ℃ in a high-temperature furnace to soften the glass tube, then adopting a vertical drawing mode to elongate the thick hollow glass tube, and carrying out primary drawing to ensure that the outer diameter of the thick hollow glass tube reaches 10-15 mm;
filling fluororubber into the thick hollow glass tube subjected to primary drawing, so that the thick hollow glass tube and the thin hollow glass tube are filled with the fluororubber;
and (3) carrying out secondary drawing on the rough hollow glass tube filled with the fluororubber at 500-550 ℃ to enable the outer diameter of the rough hollow glass tube to be less than 0.2mm, and obtaining the glass fiber.
The toughness of the glass fiber drawn twice after glue pouring is greatly improved, and the glass fiber can be woven into a net, and the method specifically comprises the following steps:
and rolling the glass fibers subjected to secondary drawing into glass fiber bundles according to the number of 50 glass fibers per bundle, arranging the glass fiber bundles at a distance of 100-200mm, criss-cross forming a grid shape, and firmly bonding the crossed positions of the glass fiber bundles by using aqueous polyurethane adhesive to obtain the glass fiber bundle net.
The concrete steps of constructing the concrete slab by using the glass fiber woven into the net as the framework are as follows:
selecting a glass fiber bundle net with a distance of 150mm as a lowermost net, fixing the lowermost net above the concrete mould, ensuring that the distance between the lowermost net and a bottom plate of the concrete mould is 5-8mm, and spraying water to wet the whole lowermost net;
filling the mixed concrete slurry into the concrete mould for the first time to ensure that the height of the concrete is 10-20 mm;
selecting a glass fiber bundle net with a distance of 200mm as a second layer net, spraying water to enable the second layer net to be soaked integrally, placing the second layer net above concrete, and vibrating to enable the second layer net to be well combined with concrete slurry;
filling the mixed concrete slurry into the concrete mould for the second time to ensure that the height of the concrete is 30-40 mm;
selecting a glass fiber bundle net with a distance of 200mm as a third layer net, spraying water to enable the third layer net to be soaked integrally, placing the third layer net above concrete, and vibrating to enable the third layer net to be well combined with concrete slurry;
filling the mixed concrete slurry into the concrete mould for the third time to ensure that the height of the concrete is 50-60 mm;
and selecting a glass fiber bundle net with a distance of 150mm as a fourth layer net, spraying water to enable the fourth layer net to be soaked integrally, placing the fourth layer net above concrete, vibrating to enable the fourth layer net to be well combined with concrete slurry, and enabling the fourth layer net to be immersed into the concrete integrally.
The concrete slurry comprises cement, quartz sand, light aggregate and a water reducing agent, wherein the weight ratio of the defoaming agent is 1: 1: 0.14: 0.02: 0.1, and the water-cement ratio is controlled below 0.15.
After the fourth layer of net and the concrete slurry are well combined through vibration, the fourth layer of net is not directly immersed into the concrete, and the mixed concrete slurry is filled into the concrete mould for the fourth time, so that the fourth layer of net is entirely immersed into the concrete.
When the thick hollow glass tube is drawn for the first time, an integral heating mode is adopted, the thick hollow glass tube is vertically placed and integrally heated, and the drawing speed is required to be between 1m/min and 1.5 m/min;
and during the second drawing, a local heating mode is adopted, the width of 50cm of the length of one end of the thick hollow glass tube is selected for heating, and the thick hollow glass tube is drawn in the heating process, wherein the drawing speed is between 2m/min and 2.5 m/min.
Concrete heat preservation and maintenance parameters are as follows:
stage 1, humidity is 35-60% at 35-50 ℃, and curing time is not less than 72 hours;
and (2) stage: spraying water to the surface of the concrete every day at room temperature with the humidity of 35-60% and the curing time of not less than 10 days, wherein the water spraying amount per unit area is required to reach 200mL/m2。
The glass fiber is broken in the drawing process, and can be used as long as the length of the glass fiber is more than 500 mm;
if the length of the glass fibers constituting the glass fiber bundle is insufficient, the glass fibers are directly used in an overlapping manner.
Example 2:
a manufacturing method of a glass fiber reinforced concrete slab comprises the following steps:
step 1: the glass fiber is stretched and formed, the glass column and the thin hollow glass tube are mixed and arranged according to a certain proportion, then the glass column and the thin hollow glass are put into the thick hollow glass tube together, and the glass fiber is obtained through stretching and forming;
step 2: pouring rubber, namely pouring rubber into the glass fiber formed by stretching in the step 1, and performing secondary drawing after pouring the rubber;
and step 3: weaving the glass fiber obtained in the step 2 after the secondary drawing into a net according to a preset shape;
and 4, step 4: and (3) constructing a concrete slab by using the glass fiber woven into the net as a framework, and performing heat preservation and maintenance to obtain the glass fiber reinforced concrete slab.
The steps of the glass fiber stretch forming and glue pouring are as follows:
mixing the glass column and the thin hollow glass tube according to a preset ratio, wherein the ratio of the glass column to the thin hollow glass tube is 1:1 to 1: 2; the outer diameters of the glass column and the thin hollow glass tube are the same and are 5-8mm, and the inner diameter of the thin hollow glass tube is 3-5 mm;
filling the glass column and the thin hollow glass tube into the thick hollow glass tube, wherein the outer diameter of each thick hollow glass tube is 30-50mm, and the inner diameter is 25-45 mm; a plurality of glass columns and thin hollow glass tubes can be filled in the thick hollow glass tube side by side;
heating the filled thick hollow glass tube to 800 ℃ in a high-temperature furnace to soften the glass tube, then adopting a vertical drawing mode to elongate the thick hollow glass tube, and carrying out primary drawing to ensure that the outer diameter of the thick hollow glass tube reaches 10-15 mm;
filling fluororubber into the thick hollow glass tube subjected to primary drawing, so that the thick hollow glass tube and the thin hollow glass tube are filled with the fluororubber;
and (3) carrying out secondary drawing on the rough hollow glass tube filled with the fluororubber at 500-550 ℃ to enable the outer diameter of the rough hollow glass tube to be less than 0.2mm, and obtaining the glass fiber.
The toughness of the glass fiber drawn twice after glue pouring is greatly improved, and the glass fiber can be woven into a net, and the method specifically comprises the following steps:
and (3) rolling the glass fibers subjected to secondary drawing into glass fiber bundles according to the quantity of 150 fibers per bundle, arranging the glass fiber bundles at the interval of 100-200mm, criss-cross forming a grid shape, and firmly bonding the crossed positions of the glass fiber bundles by using aqueous polyurethane adhesive to obtain the glass fiber bundle net.
The concrete steps of constructing the concrete slab by using the glass fiber woven into the net as the framework are as follows:
selecting a glass fiber bundle net with a distance of 150mm as a lowermost net, fixing the lowermost net above the concrete mould, ensuring that the distance between the lowermost net and a bottom plate of the concrete mould is 5-8mm, and spraying water to wet the whole lowermost net;
filling the mixed concrete slurry into the concrete mould for the first time to ensure that the height of the concrete is 10-20 mm;
selecting a glass fiber bundle net with a distance of 200mm as a second layer net, spraying water to enable the second layer net to be soaked integrally, placing the second layer net above concrete, and vibrating to enable the second layer net to be well combined with concrete slurry;
filling the mixed concrete slurry into the concrete mould for the second time to ensure that the height of the concrete is 30-40 mm;
selecting a glass fiber bundle net with a distance of 200mm as a third layer net, spraying water to enable the third layer net to be soaked integrally, placing the third layer net above concrete, and vibrating to enable the third layer net to be well combined with concrete slurry;
filling the mixed concrete slurry into the concrete mould for the third time to ensure that the height of the concrete is 50-60 mm;
and selecting a glass fiber bundle net with a distance of 150mm as a fourth layer net, spraying water to enable the fourth layer net to be soaked integrally, placing the fourth layer net above concrete, vibrating to enable the fourth layer net to be well combined with concrete slurry, and enabling the fourth layer net to be immersed into the concrete integrally.
The concrete slurry comprises cement, quartz sand, light aggregate and a water reducing agent, wherein the weight ratio of the defoaming agent is 1: 1: 0.14: 0.02: 0.1, and the water-cement ratio is controlled below 0.15.
After the fourth layer of net and the concrete slurry are well combined through vibration, the fourth layer of net is not directly immersed into the concrete, and the mixed concrete slurry is filled into the concrete mould for the fourth time, so that the fourth layer of net is entirely immersed into the concrete.
When the thick hollow glass tube is drawn for the first time, an integral heating mode is adopted, the thick hollow glass tube is vertically placed and integrally heated, and the drawing speed is required to be between 1m/min and 1.5 m/min;
and during the second drawing, a local heating mode is adopted, the width of 50cm of the length of one end of the thick hollow glass tube is selected for heating, and the thick hollow glass tube is drawn in the heating process, wherein the drawing speed is between 2m/min and 2.5 m/min.
Concrete heat preservation and maintenance parameters are as follows:
stage 1, humidity is 35-60% at 35-50 ℃, and curing time is not less than 72 hours;
and (2) stage: spraying water to the surface of the concrete every day at room temperature with the humidity of 35-60% and the curing time of not less than 10 days, wherein the water spraying amount per unit area is required to reach 200mL/m2。
The glass fiber is broken in the drawing process, and can be used as long as the length of the glass fiber is more than 500 mm;
if the length of the glass fibers constituting the glass fiber bundle is insufficient, the glass fibers are directly used in an overlapping manner.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (9)
1. A manufacturing method of a glass fiber reinforced concrete slab is characterized by comprising the following steps:
step 1: the glass fiber is stretched and formed, the glass column and the thin hollow glass tube are mixed and arranged according to a predetermined proportion, then the glass column and the thin hollow glass are put into the thick hollow glass tube together, and the glass fiber is obtained through stretching and forming;
step 2: pouring rubber, namely pouring rubber into the glass fiber formed by stretching in the step 1, and performing secondary drawing after pouring the rubber;
and step 3: weaving the glass fiber obtained in the step 2 after the secondary drawing into a net according to a preset shape;
and 4, step 4: and (3) constructing a concrete slab by using the glass fiber woven into the net as a framework, and performing heat preservation and maintenance to obtain the glass fiber reinforced concrete slab.
2. The method of making a glass fiber reinforced concrete panel according to claim 1, characterized in that:
the steps of the glass fiber stretch forming and glue pouring are as follows:
mixing the glass column and the thin hollow glass tube according to a preset ratio, wherein the ratio of the glass column to the thin hollow glass tube is 1:1 to 1: 2; the outer diameters of the glass column and the thin hollow glass tube are the same and are 5-8mm, and the inner diameter of the thin hollow glass tube is 3-5 mm;
filling the glass column and the thin hollow glass tube into the thick hollow glass tube, wherein the outer diameter of each thick hollow glass tube is 30-50mm, and the inner diameter is 25-45 mm; a plurality of glass columns and thin hollow glass tubes can be filled in the thick hollow glass tube side by side;
heating the filled thick hollow glass tube to 800 ℃ in a high-temperature furnace to soften the glass tube, then adopting a vertical drawing mode to elongate the thick hollow glass tube, and carrying out primary drawing to ensure that the outer diameter of the thick hollow glass tube reaches 10-15 mm;
filling fluororubber into the thick hollow glass tube subjected to primary drawing, so that the thick hollow glass tube and the thin hollow glass tube are filled with the fluororubber;
and (3) carrying out secondary drawing on the rough hollow glass tube filled with the fluororubber at 500-550 ℃ to enable the outer diameter of the rough hollow glass tube to be less than 0.2mm, and obtaining the glass fiber.
3. The method of making a glass fiber reinforced concrete panel according to claim 2, characterized in that:
the toughness of the glass fiber drawn twice after glue pouring is greatly improved, and a net can be woven, and the method specifically comprises the following steps:
and rolling the glass fibers subjected to secondary drawing into glass fiber bundles according to the number of 50-150 glass fibers per bundle, arranging the glass fiber bundles according to the distance of 100-200mm, criss-cross forming a grid shape, and firmly bonding the crossed positions of the glass fiber bundles by using aqueous polyurethane adhesive to obtain the glass fiber bundle net.
4. A method of making glass fibre reinforced concrete panels as claimed in claim 3 wherein:
the concrete steps of constructing the concrete slab by using the glass fiber woven into the net as the framework are as follows:
selecting a glass fiber bundle net with the distance of 100mm to 150mm as a lowest net, fixing the lowest net above the concrete mould, ensuring that the distance between the lowest net and a bottom plate of the concrete mould is 5-8mm, and spraying water to wet the whole lowest net;
filling the mixed concrete slurry into the concrete mould for the first time to ensure that the height of the concrete is 10-20 mm;
selecting a glass fiber bundle net with the distance of 150mm to 200mm as a second layer net, spraying water to wet the whole second layer net, placing the second layer net above concrete, and vibrating to enable the second layer net to be well combined with concrete slurry;
filling the mixed concrete slurry into the concrete mould for the second time to ensure that the height of the concrete is 30-40 mm;
selecting a glass fiber bundle net with the distance of 150mm to 200mm as a third layer net, spraying water to wet the whole third layer net, placing the third layer net above concrete, and vibrating to enable the third layer net to be well combined with concrete slurry;
filling the mixed concrete slurry into the concrete mould for the third time to ensure that the height of the concrete is 50-60 mm;
selecting a glass fiber bundle net with the distance of 100mm to 150mm as a fourth layer net, spraying water to enable the fourth layer net to be soaked in the whole body, placing the fourth layer net above concrete, vibrating to enable the fourth layer net to be well combined with concrete slurry, and enabling the fourth layer net to be immersed in the concrete in the whole body.
5. The method of making a glass fiber reinforced concrete panel according to claim 4, characterized in that:
the concrete slurry comprises cement, quartz sand, light aggregate and a water reducing agent, wherein the weight ratio of the defoaming agent is 1: 1: 0.14: 0.02: 0.1, and the water-cement ratio is controlled below 0.15.
6. The method of making a glass fiber reinforced concrete panel according to claim 4, characterized in that:
and after the fourth layer of net is well combined with the concrete slurry by vibration, the fourth layer of net is not directly immersed into the concrete, and the mixed concrete slurry is filled into the concrete mould for the fourth time, so that the fourth layer of net is entirely immersed into the concrete.
7. The method of making a glass fiber reinforced concrete panel according to claim 2, characterized in that:
when the thick hollow glass tube is drawn for the first time, an integral heating mode is adopted, the thick hollow glass tube is vertically placed and integrally heated, and the drawing speed is required to be between 1m/min and 1.5 m/min;
and during the second drawing, a local heating mode is adopted, the width of 50cm of the length of one end of the thick hollow glass tube is selected for heating, and the thick hollow glass tube is drawn in the heating process, wherein the drawing speed is between 2m/min and 2.5 m/min.
8. A method of making glass fibre reinforced concrete panels as claimed in any one of claims 4 to 6 wherein:
concrete heat preservation and maintenance parameters are as follows:
stage 1, humidity is 35-60% at 35-50 ℃, and curing time is not less than 72 hours;
and (2) stage: spraying water to the surface of the concrete every day at room temperature with the humidity of 35-60% and the curing time of not less than 10 days, wherein the water spraying amount per unit area is required to reach 200mL/m2。
9. A method of making glass fibre reinforced concrete panels as claimed in claim 3 wherein:
the glass fiber is broken in the drawing process, and can be used as long as the length of the glass fiber is more than 500 mm;
if the length of the glass fibers constituting the glass fiber bundle is insufficient, the glass fibers are directly used in an overlapping manner.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1547559A (en) * | 2002-05-09 | 2004-11-17 | 古河电气工业株式会社 | Method of manufacturing optical fiber |
| CN102298170A (en) * | 2011-08-22 | 2011-12-28 | 北京交通大学 | Microstructure cladding monocrystalline optical fiber and preparation method |
| CN102814861A (en) * | 2012-07-17 | 2012-12-12 | 河北工业大学 | Preparation method of reinforced concrete beam with demounting-free textile reinforced concrete (TRC) bottom mould |
| CN104786515A (en) * | 2014-01-16 | 2015-07-22 | 上海联影医疗科技有限公司 | Production apparatus and manufacturing method of fiber-reinforced ring |
| CN106414563A (en) * | 2014-05-23 | 2017-02-15 | 乐金华奥斯有限公司 | Continuous fiber reinforced composite and manufacturing method therefor |
| CN109679221A (en) * | 2018-12-29 | 2019-04-26 | 重庆普利特新材料有限公司 | A kind of high tenacity high elongation at tear long glass fiber reinforced thermoplastic material and preparation method thereof |
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2021
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1547559A (en) * | 2002-05-09 | 2004-11-17 | 古河电气工业株式会社 | Method of manufacturing optical fiber |
| CN102298170A (en) * | 2011-08-22 | 2011-12-28 | 北京交通大学 | Microstructure cladding monocrystalline optical fiber and preparation method |
| CN102814861A (en) * | 2012-07-17 | 2012-12-12 | 河北工业大学 | Preparation method of reinforced concrete beam with demounting-free textile reinforced concrete (TRC) bottom mould |
| CN104786515A (en) * | 2014-01-16 | 2015-07-22 | 上海联影医疗科技有限公司 | Production apparatus and manufacturing method of fiber-reinforced ring |
| CN106414563A (en) * | 2014-05-23 | 2017-02-15 | 乐金华奥斯有限公司 | Continuous fiber reinforced composite and manufacturing method therefor |
| CN109679221A (en) * | 2018-12-29 | 2019-04-26 | 重庆普利特新材料有限公司 | A kind of high tenacity high elongation at tear long glass fiber reinforced thermoplastic material and preparation method thereof |
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