CN110862661A - Production process for improving external bearing capacity of glass fiber reinforced plastic septic tank - Google Patents
Production process for improving external bearing capacity of glass fiber reinforced plastic septic tank Download PDFInfo
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/06—Unsaturated polyesters
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
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Abstract
The invention discloses a production process for improving the external bearing capacity of a glass fiber reinforced plastic septic tank, which relates to the technical field of sewage treatment and comprises the following specific processes: 1) preparing mesoporous alumina nanofibers; 2) preparing an alumina fiber/zinc-fumaric acid compound; 3) adding the alumina fiber/zinc-fumaric acid compound into a polyethyleneimine solution to obtain a polyethyleneimine pretreated alumina fiber/zinc-fumaric acid compound; 4) melting and extruding the polyethyleneimine pretreated alumina fiber/zinc-fumaric acid compound treated by the titanate coupling agent and polypropylene by an extruder to obtain a polypropylene composite material; 5) the raw materials are fed into an extruder for foundation, poured into a die and molded by compression. This glass tempering manure pit can carry out the homodisperse with the external force that bears when receiving the exogenic action to can avoid certain some point of glass tempering manure pit to cause because of the atress is too big to warp, break, improve its bearing capacity, make its non-deformable.
Description
Technical Field
The invention belongs to the technical field of sewage treatment, and particularly relates to a production process for improving the external bearing capacity of a glass fiber reinforced plastic septic tank.
Background
The septic tank is indispensable drainage equipment in the building field, is used for discharging into municipal administration pipeline or reentrant subordinate sewage treatment device carries out advanced treatment after carrying out primary treatment with domestic waste water. The septic tank is manufactured by bricks, reinforced concrete or steel plates in the early stage, but the septic tank has obvious defects, and the glass fiber reinforced plastic septic tank is gradually selected by most building units in recent years. The glass fiber reinforced plastic septic tank storage tank made of glass fiber reinforced plastic has the characteristics of strong corrosion resistance, no leakage, easy construction, low aging speed and the like, and the service life can reach more than 50 years.
At present, the storage tank of the glass fiber reinforced plastic septic tank is generally buried underground to save ground space, the ground can be used for greening, squares, roads, parking lots and the like, so the underground tank body needs to bear multiple pressures such as upper earth covering pressure, lateral pressure, ground load, geological uneven settlement stress and the like, and the tank body needs to have enough strength to bear external force, thereby providing high requirements for the bearing capacity of the glass fiber reinforced plastic septic tank. For example, Chinese patent CN2018113979314 discloses a preparation method of a high-strength glass fiber reinforced plastic septic tank, which utilizes glass fiber and polypropylene to form a high-strength composite material, so that the strength of the glass fiber reinforced plastic septic tank is improved; for another example, Chinese patent CN2018109739341 discloses a production process of a high-strength and high-toughness glass fiber reinforced plastic septic tank, which utilizes the lawful reaction among coupling agent molecules to firmly combine glass fibers and a polyester matrix together, thereby improving the strength and the toughness of the glass fiber reinforced plastic septic tank; the two patents adopt the bonding capacity of the glass fiber and the resin matrix to realize the enhancement of the strength of the glass fiber reinforced plastic septic tank, but the simple method for enhancing the strength of the glass fiber reinforced plastic septic tank improves the bearing capacity of the glass fiber reinforced plastic septic tank to the external pressure, the effect is limited, because the increasing speed of the strength of the glass fiber reinforced plastic septic tank is far shorter than the increasing speed of the external pressure, the self strength of the glass fiber reinforced plastic septic tank is continuously enhanced, the generated process cost is also increased in multiples, and the economic benefit is reduced.
Disclosure of Invention
The invention aims to solve the existing problems and provides a production process for improving the external bearing capacity of a glass fiber reinforced plastic septic tank, and the bearing capacity of the glass fiber reinforced plastic septic tank is improved by improving the dispersion effect of the glass fiber reinforced plastic septic tank on the external pressure.
The invention is realized by the following technical scheme:
a production process for improving the external bearing capacity of a glass fiber reinforced plastic septic tank comprises the following specific production processes:
1) dissolving polyvinylpyrrolidone with the weight of 7-10% of the mixed solution into the mixed solution consisting of ethanol and deionized water according to the volume ratio of 1:1, stirring at normal temperature to form transparent liquid, then adding aluminum acetate dihydrate with the weight of 18-23% of the transparent liquid into the transparent liquid, heating in a water bath at 60-70 ℃ for 20-30min, then adding a proper amount of ammonium diisopropoxide, stirring at the rotation speed of 200-300r/min for 50-70min to obtain a precursor solution with the ammonium diisopropoxide content of 3-7%, spinning the obtained precursor solution, drying the obtained precursor fiber at 70-80 ℃ for 10-15h, then heating from room temperature to 450-550 ℃ according to the heating speed of 3-5 ℃/min, carrying out high-temperature heat treatment for 2-3h, the mesoporous alumina nano fiber can be obtained, wherein the inner diameter of a spinning nozzle is 0.3-0.5mm, the power voltage is 12-17kV, and the distance between a spinning receiving device and the nozzle is 12-18 cm;
2) adding the prepared mesoporous alumina nano fiber into a zinc nitrate hexahydrate ethanol solution with the concentration of 0.012-0.015g/ml according to the mass-to-volume ratio of 1:80-110g/ml, stirring for 1-2 hours at 200r/min to obtain a solution A, adding fumaric acid into the ethanol solution, stirring and dissolving to obtain a solution B with the fumaric acid content of 0.03-0.04g/ml, slowly pouring the solution B into the solution A at 80-130r/min according to the volume ratio of 1:1, continuously stirring for 1-2 hours, alternately washing the obtained product with deionized water and ethanol for 3-5 times, and drying at 60-70 ℃ for 10-12 hours to obtain an alumina fiber/zinc-fumaric acid compound; the invention adopts fumaric acid as an organic ligand source, zinc nitrate hexahydrate as a metal source and ethanol solution as a hardening solvent, thereby preparing a zinc-fumaric acid compound serving as a metal organic framework material, and because a large number of micropore structures exist in a metal framework of the zinc-fumaric acid compound, mesoporous alumina nano-fibers are modified into micropores of the metal framework, so that a special tubular structure is formed inside the zinc-fumaric acid compound, external force can be uniformly dispersed, and the borne external force can be uniformly dispersed when the prepared glass fiber reinforced plastic septic tank is acted by the external force, thereby improving the bearing capacity of the glass fiber reinforced plastic septic tank and ensuring that the glass fiber reinforced plastic septic tank is not easy to deform;
3) adding 30-50% of polyethyleneimine accounting for the initial total weight of the alumina fiber/zinc-fumaric acid compound and the polyethyleneimine into a methanol solution, stirring to completely dissolve the polyethyleneimine, then adding the dried alumina fiber/zinc-fumaric acid compound into a polyethyleneimine solution, stirring for 10-15h at the rotation speed of 130-; the aluminum oxide fiber/zinc-fumaric acid compound is treated by using polyethyleneimine, and polyethyleneimine molecules are introduced into the aluminum oxide fiber/zinc-fumaric acid compound, so that the thermal stability of the aluminum oxide fiber/zinc-fumaric acid compound can be improved, and the decomposition of a metal framework of the aluminum oxide fiber/zinc-fumaric acid compound in the subsequent processing process can be effectively avoided;
4) diluting 1-3 parts of titanate coupling agent by using acetone until the content is 3-6%, adding 15-17 parts of polyethyleneimine pretreated alumina fiber/zinc-fumaric acid compound, heating to 70-80 ℃, stirring at the rotation speed of 150-; the surface of the polyethyleneimine pretreated alumina fiber/zinc-fumaric acid compound is treated by using a titanate coupling agent, so that the surface stress of the polyethyleneimine pretreated alumina fiber/zinc-fumaric acid compound and the polypropylene can be reduced, and the compatibility is improved, so that the aim of improving the performance of the polypropylene is fulfilled, and the polypropylene has the effect of excellent uniform external force dispersion;
5) selecting at least one of an antioxidant 1010, an antioxidant 1076 and an antioxidant 168 as an antioxidant, selecting at least one of silicon micropowder, bentonite and calcium carbonate as a filler, selecting at least one of methyl ethyl ketone peroxide and cyclohexanone peroxide as a curing agent, selecting at least one of zinc oxide and magnesium oxide as an accelerator, stirring and mixing 10-15 parts of polypropylene composite material, 35-45 parts of unsaturated polyester, 0.2-0.5 part of antioxidant, 3-5 parts of filler, 2-3 parts of curing agent and 1-1.5 parts of accelerator for 25-35min at 1200r/min under 800-, 215-220 ℃ and 210-215 ℃, the head temperature is 210-215 ℃, the screw rotation speed is 70-100r/min, the mixture is extruded out by an extruder, and the mixture is poured into a mold at 195-200 ℃, molded, cured and molded, and the required glass fiber reinforced plastic septic tank can be obtained after demolding.
Compared with the prior art, the invention has the following advantages:
according to the glass fiber reinforced plastic septic tank provided by the invention, the mesoporous alumina nano fibers are modified into the micropores of the metal framework of the zinc-fumaric acid compound, so that a special tubular structure is formed inside the zinc-fumaric acid compound, external force can be uniformly dispersed, and the borne external force can be uniformly dispersed when the prepared glass fiber reinforced plastic septic tank is subjected to the external force, so that the deformation and the breakage of a certain point of the glass fiber reinforced plastic septic tank caused by overlarge stress can be avoided, the bearing capacity of the glass fiber reinforced plastic septic tank is improved, the glass fiber reinforced plastic septic tank is not easy to deform, the high-strength requirement in practical use can be fully met, the service life of the glass fiber reinforced plastic septic tank is prolonged, and the glass fiber reinforced plastic septic tank is suitable for being used in.
Detailed Description
The present invention will be further described with reference to specific embodiments.
Example 1
A production process for improving the external bearing capacity of a glass fiber reinforced plastic septic tank comprises the following specific production processes:
1) dissolving polyvinylpyrrolidone with the weight of 7 percent of the mixed solution into the mixed solution consisting of ethanol and deionized water according to the volume ratio of 1:1, stirring at normal temperature to form transparent liquid, adding aluminum acetate dihydrate in an amount of 18 wt% of the transparent liquid into the transparent liquid, heating in 60 deg.C water bath for 30min, adding appropriate amount of ammonium diisopropoxide, stirring at rotation speed of 200r/min for 70min to obtain precursor solution with ammonium diisopropoxide content of 3%, spinning the obtained precursor solution, drying the obtained precursor fiber at 70 deg.C for 15h, then heating from room temperature to 450 ℃ according to the heating rate of 3 ℃/min, carrying out high-temperature heat treatment for 3h, the mesoporous alumina nano fiber can be obtained, wherein the inner diameter of a spinning nozzle is 0.3mm, the power voltage is 12kV, and the distance between a spinning receiving device and the nozzle is 12 cm;
2) adding the prepared mesoporous alumina nano fiber into a zinc nitrate hexahydrate ethanol solution with the concentration of 0.012g/ml according to the mass-to-volume ratio of 1:80g/ml, stirring for 2 hours at 150r/min to obtain a solution A, adding fumaric acid into the ethanol solution, stirring for dissolving to obtain a solution B with the fumaric acid content of 0.03g/ml, slowly pouring the solution B into the solution A at 80r/min according to the volume ratio of 1:1, continuously stirring for 2 hours, alternately washing the obtained product with deionized water and ethanol for 3 times, and drying for 12 hours at 60 ℃ to obtain the alumina fiber/zinc-fumaric acid composite
3) Adding alumina fiber/zinc-fumaric acid compound and polyethyleneimine of which the initial total weight is 30% of that of the polyethyleneimine into a methanol solution, stirring to completely dissolve the alumina fiber/zinc-fumaric acid compound, adding the dried alumina fiber/zinc-fumaric acid compound into the polyethyleneimine solution, stirring for 15 hours at the rotating speed of 130r/min, and drying the obtained suspension at 70 ℃ to constant weight to obtain polyethyleneimine pretreated alumina fiber/zinc-fumaric acid compound;
4) diluting 1 part of titanate coupling agent by using acetone until the content is 3%, adding 15 parts of polyethyleneimine to pretreat an alumina fiber/zinc-fumaric acid compound, heating to 70 ℃, stirring for 5 hours at the rotation speed of 150r/min, after the reaction is finished, performing suction filtration, washing, drying, adding the mixture and polypropylene into an extruder with the temperature of 155 ℃, 175 ℃, 190 ℃ and 185 ℃, the head temperature of 185 ℃ and the screw rotation speed of 60r/min, and performing melt blending, extrusion and granulation to obtain a polyester composite material;
5) stirring and mixing 10 parts of polypropylene composite material, 35 parts of unsaturated polyester, 0.2 part of antioxidant 1010, 3 parts of silicon micropowder, 2 parts of methyl ethyl ketone peroxide and 1 part of zinc oxide at the speed of 800r/min for 35min to obtain a premix, then adding 25 parts of glass fiber into the premix, pouring into a kneader for kneading for 15min, uniformly kneading, then feeding into an extruder with the temperature of 180 ℃, 195 ℃, 215 ℃ and 210 ℃, the head temperature of 210 ℃ and the screw rotation speed of 70r/min for extrusion, pouring into a mold with the temperature of 195 ℃, carrying out mold pressing curing molding, and demolding to obtain the required glass fiber reinforced plastic septic tank.
By adopting the method provided by the embodiment, the glass fiber reinforced plastic samples with the dimensions of 250mm multiplied by 50mm multiplied by 10mm are prepared and tested, and 20 glass fiber reinforced plastic samples provided by the embodiment are tested for impact strength according to the test standard GB/T1451-2005, and the obtained result is 236KJ/m2The tensile strength test was performed on 20 FRP samples provided in this example according to the test standard GB/T1447-2005 to obtain a result of 153MPa, and the flexural strength test was performed on 20 FRP samples provided in this example according to the test standard GB/T1449-2005 to obtain a result of 296 MPa.
Example 2
A production process for improving the external bearing capacity of a glass fiber reinforced plastic septic tank comprises the following specific production processes:
1) dissolving polyvinylpyrrolidone with the weight of 8 percent of the mixed solution into the mixed solution consisting of ethanol and deionized water according to the volume ratio of 1:1, stirring at normal temperature to form transparent liquid, adding aluminum acetate dihydrate 20 wt% of the transparent liquid into the transparent liquid, heating in 65 deg.C water bath for 25min, adding appropriate amount of ammonium diisopropoxide, stirring at 260r/min for 60min to obtain precursor solution with 5% ammonium diisopropoxide content, spinning the obtained precursor solution, drying the obtained precursor fiber at 75 deg.C for 12h, then heating from room temperature to 500 ℃ according to the heating rate of 5 ℃/min, carrying out high-temperature heat treatment for 2.5h, the mesoporous alumina nano fiber can be obtained, wherein the inner diameter of a spinning nozzle is 0.4mm, the power voltage is 15kV, and the distance between a spinning receiving device and the nozzle is 15 cm;
2) adding the prepared mesoporous alumina nano fiber into a zinc nitrate hexahydrate ethanol solution with the concentration of 0.013g/ml according to the mass-to-volume ratio of 1:90g/ml, stirring for 1.5 hours at 170r/min to obtain a solution A, adding fumaric acid into the ethanol solution, stirring and dissolving to obtain a solution B with the fumaric acid content of 0.035g/ml, slowly pouring the solution B into the solution A at 110r/min according to the volume ratio of 1:1, continuously stirring for 1.5 hours, alternately washing the obtained product with deionized water and ethanol for 4 times, and drying for 11 hours at 65 ℃ to obtain an alumina fiber/zinc-fumaric acid compound;
3) adding 40% of polyethyleneimine of the initial total weight of the alumina fiber/zinc-fumaric acid compound and the polyethyleneimine into a methanol solution, stirring to completely dissolve the mixture, then adding the dried alumina fiber/zinc-fumaric acid compound into a polyethyleneimine solution, stirring at the rotating speed of 150r/min for 12 hours, and drying the obtained suspension at 75 ℃ to constant weight to obtain a polyethyleneimine pretreated alumina fiber/zinc-fumaric acid compound;
4) diluting 2 parts of titanate coupling agent by using acetone until the content is 5%, adding 16 parts of polyethyleneimine to pretreat an alumina fiber/zinc-fumaric acid compound, heating to 75 ℃, stirring for 4 hours at the rotation speed of 200r/min, after the reaction is finished, performing suction filtration, washing, drying, adding the mixture and polypropylene into an extruder with the temperature of 160 ℃, 175 ℃, 190 ℃ and 185 ℃, the head temperature of 185 ℃ and the screw rotation speed of 70r/min, and performing melt blending, extrusion and granulation to obtain a polyester composite material;
5) stirring and mixing 12 parts of polypropylene composite material, 40 parts of unsaturated polyester, 0.3 part of antioxidant 1076, 4 parts of bentonite, 2.5 parts of cyclohexanone peroxide and 1.2 parts of magnesium oxide at 1000r/min for 30min to obtain a premix, adding 30 parts of glass fiber into the premix, pouring into a kneader for kneading for 20min, uniformly kneading, then feeding into an extruder with the temperature of 185 ℃, 200 ℃, 215 ℃ and 210 ℃, the head temperature of 210 ℃ and the screw rotation speed of 85r/min for extrusion, pouring into a mold with the temperature of 197 ℃, carrying out mold pressing curing molding, and demolding to obtain the required glass fiber reinforced plastic septic tank.
By adopting the method provided by the embodiment, the glass fiber reinforced plastic samples with the dimensions of 250mm multiplied by 50mm multiplied by 10mm are prepared and tested, and the 20 glass fiber reinforced plastic samples provided by the embodiment are tested for impact strength according to the test standard GB/T1451-2005, and the obtained result is 243KJ/m2The tensile strength test was performed on 20 FRP samples provided in this example according to the test standard GB/T1447-2005 to obtain a result of 162MPa, and the flexural strength test was performed on 20 FRP samples provided in this example according to the test standard GB/T1449-2005 to obtain a result of 298 MPa.
Example 3
A production process for improving the external bearing capacity of a glass fiber reinforced plastic septic tank comprises the following specific production processes:
1) dissolving polyvinylpyrrolidone with the weight of 10 percent of the mixed solution into the mixed solution consisting of ethanol and deionized water according to the volume ratio of 1:1, stirring at normal temperature to form transparent liquid, adding aluminum acetate dihydrate 23 wt% of the transparent liquid into the transparent liquid, heating in 70 deg.C water bath for 20min, adding appropriate amount of ammonium diisopropoxide, stirring at 300r/min for 50min to obtain precursor solution with 7% ammonium diisopropoxide content, spinning the precursor solution, drying the precursor fiber at 80 deg.C for 10 hr, then heating from room temperature to 550 ℃ according to the heating rate of 5 ℃/min, carrying out high-temperature heat treatment for 2h, the mesoporous alumina nano fiber can be obtained, wherein the inner diameter of a spinning nozzle is 0.5mm, the power voltage is 17kV, and the distance between a spinning receiving device and the nozzle is 18 cm;
2) adding the prepared mesoporous alumina nano fiber into 0.015g/ml zinc nitrate hexahydrate ethanol solution according to the mass-to-volume ratio of 1:110g/ml, stirring for 1h at 200r/min to obtain solution A, adding fumaric acid into the ethanol solution, stirring for dissolving to obtain solution B with the fumaric acid content of 0.04g/ml, slowly pouring the solution B into the solution A at 130r/min according to the volume ratio of 1:1, continuously stirring for 1h, alternately washing the obtained product with deionized water and ethanol for 5 times, and drying for 10h at 70 ℃ to obtain an alumina fiber/zinc-fumaric acid compound;
3) adding aluminum oxide fiber/zinc-fumaric acid compound and polyethyleneimine of which the initial total weight is 50% of that of the polyethyleneimine into a methanol solution, stirring to completely dissolve the aluminum oxide fiber/zinc-fumaric acid compound, adding the dried aluminum oxide fiber/zinc-fumaric acid compound into a polyethyleneimine solution, stirring at the rotating speed of 180r/min for 10 hours, and drying the obtained suspension at 80 ℃ to constant weight to obtain a polyethyleneimine pretreated aluminum oxide fiber/zinc-fumaric acid compound;
4) diluting 3 parts of titanate coupling agent by using acetone until the content is 6%, adding 17 parts of polyethyleneimine to pretreat an alumina fiber/zinc-fumaric acid compound, heating to 80 ℃, stirring for 3 hours at the rotation speed of 250r/min, after the reaction is finished, performing suction filtration, washing, drying, adding the mixture and polypropylene into an extruder with the temperature of 160 ℃, 180 ℃, 195 ℃ and 190 ℃, the head temperature of 190 ℃ and the screw rotation speed of 80r/min, and performing melt blending, extrusion and granulation to obtain a polyester composite material;
5) stirring and mixing 15 parts of polypropylene composite material, 45 parts of unsaturated polyester, 0.5 part of antioxidant 168, 5 parts of calcium carbonate, 3 parts of cyclohexanone peroxide and 1.5 parts of magnesium oxide at 1200r/min for 25min to obtain a premix, adding 35 parts of glass fiber into the premix, pouring into a kneader for kneading for 25min, uniformly kneading, then feeding into an extruder with the temperature of 185 ℃, 200 ℃, 220 ℃ and 215 ℃, the head temperature of 215 ℃ and the screw rotation speed of 100r/min for extrusion, pouring into a mold with the temperature of 200 ℃, carrying out mold pressing and curing molding, and demolding to obtain the required glass fiber reinforced plastic septic tank.
By adopting the method provided by the embodiment, the glass fiber reinforced plastic samples with the dimensions of 250mm multiplied by 50mm multiplied by 10mm are prepared and tested, and the 20 glass fiber reinforced plastic samples provided by the embodiment are tested for impact strength according to the test standard GB/T1451-2005, and the obtained result is 231KJ/m2The 20 glass fiber reinforced plastic samples provided in this example were tested for tensile strength according to the test standard GB/T1447-2005, and the results obtained were 147MPa, according to the test standard GB/T1449-2005,the 20 glass fiber reinforced plastic samples provided in this example were tested for flexural strength and found to be 291 MPa.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through the inventive work should be included in the scope of the present invention.
Claims (6)
1. A production process for improving the external bearing capacity of a glass fiber reinforced plastic septic tank is characterized by comprising the following specific production processes:
1) dissolving polyvinylpyrrolidone into a mixed solution consisting of ethanol and deionized water, stirring at normal temperature to form a transparent liquid, then adding aluminum acetate dihydrate into the transparent liquid, heating in a water bath at 60-70 ℃ for 20-30min, then adding a proper amount of ammonium diisopropoxide, stirring at the rotation speed of 200-300r/min for 50-70min to obtain a precursor solution, spinning the obtained precursor solution, drying the obtained precursor fiber, and performing high-temperature thermal treatment to obtain the mesoporous alumina nanofiber;
2) adding the prepared mesoporous alumina nano fiber into an ethanol solution of zinc nitrate hexahydrate, stirring for 1-2h at the speed of 150-;
3) adding polyethyleneimine into a methanol solution, stirring to completely dissolve the polyethyleneimine, then adding the dried alumina fiber/zinc-fumaric acid compound into the polyethyleneimine solution, stirring at the rotation speed of 130-;
4) diluting a titanate coupling agent with acetone to the content of 3-6%, adding polyethyleneimine to pretreat an alumina fiber/zinc-fumaric acid compound, heating to 70-80 ℃, stirring at the rotation speed of 150-;
5) uniformly mixing the polypropylene composite material, the unsaturated polyester, the antioxidant, the filler, the curing agent and the accelerator into a premix, then adding the glass fiber into the premix, pouring the mixture into a kneader to knead for 15-25min, uniformly kneading, then sending the mixture into an extruder to extrude, pouring the mixture into a mold, carrying out mold pressing, curing and forming, and demolding to obtain the required glass fiber reinforced plastic septic tank.
2. The production process for improving the external bearing capacity of the glass fiber reinforced plastic septic tank as claimed in claim 1, wherein in the process step 1), the volume ratio of ethanol to deionized water in the mixed solution is 1:1, and the addition amount of polyvinylpyrrolidone is 7-10% of the weight of the mixed solution; the addition amount of the aluminum acetate dihydrate is 18-23% of the weight of the transparent liquid; the content of the diisopropanol ammonium in the precursor solution is 3-7%; the inner diameter of the spinning nozzle is 0.3-0.5mm, the power supply voltage is 12-17kV, and the distance between the spinning receiving device and the nozzle is 12-18 cm; the drying temperature is 70-80 ℃, and the drying time is 10-15 h; the heat treatment temperature is 450-550 ℃, the treatment time is 2-3h, and the temperature rise speed is 3-5 ℃/min.
3. The production process for improving the external bearing capacity of the glass fiber reinforced plastic septic tank as claimed in claim 1, wherein in the process step 2), the mass-to-volume ratio of the mesoporous alumina nano-fiber to the zinc nitrate hexahydrate ethanol solution is 1:80-110g/ml, and the concentration of the zinc nitrate hexahydrate ethanol solution is 0.012-0.015 g/ml; the fumaric acid content in the solution B is 0.03-0.04 g/ml; the volume ratio of the solution A to the solution B is 1: 1; the washing mode is that deionized water and ethanol are alternately washed for 3 to 5 times; the drying temperature is 60-70 ℃, and the drying time is 10-12 h.
4. The process for improving the external bearing capacity of a glass fiber reinforced plastic septic tank as claimed in claim 1, wherein in the step 3), the amount of the polyethyleneimine is 30-50% of the initial total weight of the alumina fiber/zinc-fumaric acid compound and the polyethyleneimine.
5. The production process for improving the external bearing capacity of a glass fiber reinforced plastic septic tank as claimed in claim 1, wherein in the process step 4), the mass ratio of the tetraethyl titanate to the polyethyleneimine pretreated alumina fiber/zinc-fumaric acid compound is 1-3: 15-17; the temperature of each section of the extruder is 155-160 ℃, 175-180 ℃, 190-195 ℃ and 185-190 ℃, the head temperature is 185-190 ℃, and the screw rotation speed is 60-80 r/min.
6. The production process of claim 1, wherein in the process step 5), the antioxidant is at least one of antioxidant 1010, antioxidant 1076 and antioxidant 168, the filler is at least one of silica micropowder, bentonite and calcium carbonate, the curing agent is at least one of methyl ethyl ketone peroxide and cyclohexanone peroxide, and the accelerator is at least one of zinc oxide and magnesium oxide; the mass ratio of the polypropylene composite material to the unsaturated polyester to the antioxidant to the filler to the curing agent to the accelerator to the glass fiber is 10-15:35-45:0.2-0.5:3-5:2-3:1-1.5: 25-35; the rotation speed for uniformly mixing the raw materials is 800-; the temperature of each section of the extruder is 180-185 ℃, 195-200 ℃, 215-220 ℃ and 210-215 ℃, the head temperature is 210-215 ℃, and the screw rotation speed is 70-100 r/min; the mold temperature was set at 195-.
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| CN111560161A (en) * | 2020-06-03 | 2020-08-21 | 龙永南 | Glass fiber composite material and preparation method thereof |
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| CN111560161A (en) * | 2020-06-03 | 2020-08-21 | 龙永南 | Glass fiber composite material and preparation method thereof |
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