Reinforced safety net with high weather resistance and manufacturing process thereof

Abstract

The invention discloses a reinforced safety net with high weather resistance and a manufacturing process thereof, and relates to the technical field of metal nano safety nets for bridges, the manufacturing process of the reinforced safety net comprises the following steps: S1, removing impurities on the surfaces of steel wires, steel bars and steel strands, and carrying out zinc plating and coating treatment; s2, performing surface treatment on the polyester fibers and the polyacrylonitrile fibers; s3, preparing a nano suspension; s4, blending the nano material with polyester fibers and polyacrylonitrile fibers, and then spinning; s5, weaving a safety net; s6, reinforcing steel bars and steel strands are welded to obtain the reinforced safety net; s7, sequentially spraying primer, a middle layer and finish paint on the surface of the reinforced safety net; s8, the surface of the reinforced safety net is coated with a nano coating, a waterproof layer, an anti-ultraviolet layer and an anti-static layer; and S9, carrying out stretching and weather resistance testing on the reinforced safety net. The metal nano reinforced safety net is prepared from the nano material, so that the weather resistance of the safety net can be improved, the physical performance can be enhanced, and the wind pressure resistance can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of metal nano safety nets for bridges, in particular to a reinforced safety net with strong weather resistance and a manufacturing process thereof. Background Art

[0002] Traditional bridge safety nets perform poorly when faced with severe weather conditions, long-term use, or high-intensity wind pressure and load-bearing requirements. The bridge safety net of the present application adds nanomaterials to prepare nano synthetic fibers, and weaves steel wire and nano synthetic fibers into a safety net, which can improve the safety net's weather resistance, enhance physical properties, and improve its wind pressure resistance and load-bearing capacity.

[0003] The defects of existing bridge safety nets are:

[0004] 1. Patent document JP6073723B2 discloses a safety net, which mainly considers the problem of how to provide a safety net that allows simple, fast and trouble-free production, storage and transportation, but does not consider how to solve the problem of improving the weather resistance, physical properties and wind pressure resistance and load-bearing capacity of the safety net;

[0005] 2. Patent document US11180895B2 discloses a safety net. The document mainly considers the problem of how to provide a universal safety net with improved safety, but does not consider how to solve the problem of optimizing the performance of the nano coating and improving the overall performance of the safety net;

[0006] 3. Patent document KR101595652B1 discloses a method for manufacturing a safety net and the method itself. The document mainly considers how to reduce the cost of installing and maintaining the safety net, but does not consider how to further improve the corrosion resistance and weather resistance of the safety net, enhance the surface adhesion of the coating, and improve the safety of the safety net;

[0007] 4. Patent document CN104178841B discloses a method for making a safety net using waste polyester bottles. The document mainly considers the problem of how to apply waste polyester bottles to the production of safety nets, but does not consider how to improve the structural strength of the reinforced safety net and enhance the safety and practicality of the reinforced safety net. Summary of the invention

[0008] The purpose of the present invention is to provide a reinforced safety net with strong weather resistance and a manufacturing process thereof, so as to solve the problems raised in the above background technology.

[0009] To achieve the above object, the present invention provides the following technical solution: a manufacturing process of a reinforced safety net with strong weather resistance, the manufacturing process of the reinforced safety net is as follows:

[0010] S1. Remove impurities from the surface of steel wires, steel bars and steel strands, clean and dry them, and perform galvanizing and coating on the dried steel wires, steel bars and steel strands;

[0011] S2. Surface treatment of polyester fiber and polyacrylonitrile fiber;

[0012] S3, preparing nanosuspension;

[0013] S4, blending the nanomaterial with polyester fiber and polyacrylonitrile fiber and spinning them;

[0014] S5. Use a weaving machine to weave the steel wire and nano synthetic fiber into a safety net. After weaving, trim and arrange the safety net;

[0015] S6. Welding steel bars and steel strands on the safety net to obtain a reinforced safety net;

[0016] S7. Spray one layer of primer, three layers of intermediate layers and one layer of topcoat on the surface of the reinforced safety net in sequence, and allow each layer to cure naturally after spraying;

[0017] S8. After roughening the reinforced safety net, a nano coating, a waterproof layer, an anti-ultraviolet layer and an antistatic layer are coated on the surface of the reinforced safety net;

[0018] S9. Conduct tensile test and weather resistance test on the reinforced safety net.

[0019] Preferably, in S1, the following is also included:

[0020] S11, using a wire brush and a grinder to remove rust and scale on the surface of the steel wire, then soaking the steel wire in dilute sulfuric acid to pickle and remove the rust layer, using a high-pressure water gun to wash away impurities on the surface of the steel wire, wiping off moisture on the surface of the steel wire and then drying;

[0021] S12. Use sandblasting to remove the rust layer on the surface of steel bars and steel strands, and use a high-pressure air gun to remove the dust and residues left after rust removal;

[0022] S13, coating the surface of the steel wire, steel bar and steel strand with a layer of zinc chloride and then sending them into a hot-dip galvanizing furnace, so that the zinc liquid adheres to the surface of the steel wire, steel bar and steel strand and forms a zinc coating. After the galvanizing is completed, the steel wire, steel bar and steel strand are cooled, cleaned and dried;

[0023] S14. Spray a layer of primer, three layers of intermediate layers and a layer of topcoat on the surface of the dried steel wire, steel bar and steel strand in sequence, and allow each layer to cure naturally after spraying.

[0024] Preferably, the steel wire is a zinc-5% aluminum-rare earth alloy steel wire with a diameter of 4.0 mm and a strength limit of 500 N / mm²;

[0025] The primer is epoxy zinc-rich primer, model Daqiao H06-7 epoxy zinc-rich primer. The three intermediate layers are epoxy micaceous iron intermediate paint, epoxy high build intermediate paint and epoxy micaceous iron intermediate paint, models Lanling Paint H53-6 epoxy micaceous iron anti-rust paint and Xindingyan XDY-Q515 epoxy high build paint respectively. The topcoat is acrylic polyurethane topcoat, model BS04-1 various colors of acrylic polyurethane topcoat.

[0026] Preferably, in S2, the following is also included:

[0027] S21, washing the polyester fiber and the polyacrylonitrile fiber with a detergent, then rinsing them with deionized water and drying them;

[0028] S22, coating the coupling agent and the tackifier on the surface of the polyester fiber and the polyacrylonitrile fiber in sequence, and drying and curing after each coating.

[0029] Preferably, S3 further includes the following:

[0030] S31. The nanomaterials include nano silicon dioxide, nano aluminum oxide and nano titanium dioxide. The nano silicon dioxide, nano aluminum oxide and nano titanium dioxide are uniformly mixed in a ratio of 6:4:1 and added into deionized water. A dispersant is also added thereto. Under the action of ultrasound, the nano silicon dioxide, nano aluminum oxide and nano titanium dioxide are fully dispersed in the deionized water to obtain a nano suspension.

[0031] Preferably, in S4, the following is also included:

[0032] S41, taking 85% of the total amount of the nano suspension for oven drying, sieving the dried nano silicon dioxide, nano aluminum oxide and nano titanium dioxide, and then mixing them evenly with polyester fiber and polyacrylonitrile fiber, feeding them into a melt spinning machine, melting and extruding at high temperature to obtain nano synthetic fibers, and stretching and heat setting the nano synthetic fibers;

[0033] The mixing ratio of S42, nanomaterial, polyester fiber and polyacrylonitrile fiber is 11:109:80.

[0034] Preferably, in S6, the following is also included:

[0035] S61. Distribute the steel bars and steel strands evenly on the safety net and initially fix them with clamps. Use an electric welder to weld the steel bars and steel strands to the safety net. Weld symmetrically arranged steel bars and steel strands again at the stress points and connections of the safety net. After welding, trim and clean excess steel bars, steel strands and welding spatter.

[0036] Preferably, in S8, the following is also included:

[0037] S81. Roughening treatment includes using a sandblasting machine to sandblast the surface of the reinforced safety net and applying a layer of interface agent on the surface of the reinforced safety net;

[0038] S82, taking 85% of the total amount of the nano suspension and adding it to the polyurethane resin, the ratio of the nano suspension to the polyurethane resin is 1:1, and mixing them evenly by mechanical stirring to obtain a nano coating, and spraying the nano coating evenly on the surface of the reinforced safety net for multiple times, and using a hot air blower for thermal curing after each spraying;

[0039] S83, coating a waterproofing agent, an anti-ultraviolet agent and an antistatic agent on the surface of the nano coating in sequence, drying and curing after each coating, to form a waterproof layer, an anti-ultraviolet layer and an antistatic layer in sequence.

[0040] Preferably, in S9, the following is also included:

[0041] S91. Randomly select specimens 1, 2, 3, 4, 5 and 6 from the reinforced safety net, fix one end of the reinforced safety net in the upper clamp of the tensile testing machine, and the other end in the lower clamp, start the tensile testing machine, apply tension to the specimens until the specimens break, and record the tensile force value when the specimens break. The tensile strength of the safety net shall not be less than 300 MPa;

[0042] S92. Randomly select sample 7, sample 8, sample 9, sample 10, sample 11 and sample 12 from the reinforced safety net, place the reinforced safety net in a constant temperature and humidity test box, set the temperature to 80°C and the relative humidity to 95%. After 4 weeks, conduct a tensile test on the reinforced safety net again. At this time, the tensile strength of the safety net should be no less than 300MPa to be qualified.

[0043] Preferably, a reinforced safety net with strong weather resistance is a reinforced safety net made according to the manufacturing process described in any one of claims 1-9.

[0044] Compared with the prior art, the present invention has the following beneficial effects:

[0045] 1. The present invention prepares a nano suspension by using nano silicon dioxide, nano aluminum oxide and nano titanium dioxide, blends the nano suspension with polyester fiber and polyacrylonitrile fiber and then spins the nano synthetic fiber to obtain the nano synthetic fiber, and then uses a braiding machine to weave the steel wire and the nano synthetic fiber into a safety net. Firstly, nano silicon dioxide, nano aluminum oxide and nano titanium dioxide have excellent weather resistance, UV resistance, oxidation resistance and corrosion resistance. The nano materials are blended with polyester fiber and polyacrylonitrile fiber in the form of a suspension and then spun, which can significantly improve the stability and durability of the safety net in harsh environments, including high temperature, high humidity and strong ultraviolet environments, and reduce aging, fading and embrittlement problems caused by environmental factors. At the same time, The addition of nanomaterials not only improves the fineness and uniformity of polyester fibers and polyacrylonitrile fibers, but also enhances the mechanical properties of polyester fibers and polyacrylonitrile fibers through the nano effect, including tensile strength, elongation at break and wear resistance, making the manufactured safety net tougher and less prone to breakage when subjected to external forces, thereby improving the overall safety and reliability. In addition, by weaving steel wire and nano synthetic fibers into a safety net, the wind pressure resistance and load-bearing capacity of the safety net can be significantly improved. The addition of steel wire provides additional support and strength for the safety net, enabling it to remain stable under strong winds or heavy load conditions, thus solving the problems of improving the weather resistance of the safety net, enhancing physical properties and improving wind pressure resistance and load-bearing capacity.

[0046] 2. The present invention uses a sandblasting machine to perform sandblasting treatment on the surface of the reinforced safety net, and brushes a layer of interface agent on the surface of the reinforced safety net, and evenly sprays the nano coating on the surface of the reinforced safety net for multiple times. The roughening treatment uses a sandblasting machine to perform sandblasting treatment on the surface of the reinforced safety net, and brushes a layer of interface agent on the surface, which effectively increases the contact area and mechanical bite force between the subsequent nano coating and the reinforced safety net, thereby improving the adhesion of the nano coating. The nano suspension is mixed with a polyurethane resin to form a nano coating, and a multi-pass spraying and thermal curing process is adopted to ensure the uniformity and density of the nano coating. The nano coating not only has excellent weather resistance and protective performance, but also has good flexibility and wear resistance. At the same time, the nano material has excellent UV resistance, oxidation resistance and corrosion resistance, and can effectively resist the natural environment of sunlight, rain, and salt spray. Environmental erosion, extending the service life of the safety net. At the same time, a waterproofing agent is coated on the surface of the nano coating to form a dense waterproof layer, which can effectively prevent moisture from penetrating into the interior of the safety net, keep the safety net dry and stable, and avoid mildew and corrosion caused by moisture. The coating of the anti-UV layer further enhances the safety net's resistance to ultraviolet rays. Ultraviolet rays are one of the main factors leading to the aging of the safety net. The anti-UV layer can absorb or reflect ultraviolet rays to reduce the damage of ultraviolet rays to the safety net. The addition of the anti-static layer further solves the static electricity problem generated by the safety net during use. The anti-static layer can quickly conduct static electricity away, maintain the electrical neutrality of the safety net, avoid static electricity affecting the normal use of the safety net, and prevent safety hazards. Therefore, the problems of optimizing the performance of the nano coating and improving the overall performance of the safety net can be solved.

[0047] 3. The present invention removes impurities from the surface of steel wire, steel bar and steel strand, cleans and dries them, and then galvanizes and coats the dried steel wire, steel bar and steel strand. The steel wire, steel bar and steel strand are thoroughly rust-removed, cleaned and dried, and then galvanized, which significantly enhances the corrosion resistance of the steel wire, steel bar and steel strand. The galvanized layer can effectively block the corrosion of the external environment to the steel wire, steel bar and steel strand, thereby extending the service life of the safety net. After galvanizing, a primer, an intermediate layer and a topcoat are further coated on the surface of the steel wire, steel bar and steel strand, which not only enhances the aesthetics of the surface, but more importantly, improves the adhesion of the coating, prevents the coating from falling off, and ensures the long-term protection effect of the coating on the substrate in harsh environments. Highly weather-resistant coatings, including epoxy zinc-rich primer, epoxy micaceous iron intermediate paint, epoxy thick paste intermediate paint and acrylic polyurethane topcoat, can resist the influence of multiple environmental factors such as ultraviolet radiation, temperature changes and humidity changes, maintain the long-term stability of coating performance, thereby improving the weather resistance of the safety net. Since the reinforced safety net is used in the fields of construction and bridge engineering, there are extremely high requirements for safety performance. Through this manufacturing process, not only the strength and durability of the reinforced safety net are enhanced, but also through fine surface treatment, it is ensured that the safety net is not easy to break or damage during use, thereby improving the safety of the overall project. Therefore, it can solve the problems of further improving the corrosion resistance and weather resistance of the safety net, enhancing the surface adhesion of the coating, and improving the safety of the safety net.

[0048] 4. The present invention ensures that the reinforcement material can be safely fixed on the safety net in a predetermined position and direction by evenly distributing the steel bars and steel strands on the safety net and using a clamp to initially fix them, laying the foundation for subsequent welding work. The steel bars and steel strands are welded to the safety net using an electric welder, and the symmetrically arranged steel bars and steel strands are welded again at the stress points and connections of the safety net. The symmetrical arrangement not only enhances the local strength of the safety net, but also helps to disperse the stress, significantly improving the structural strength of the safety net, so that the reinforced safety net can withstand greater loads and impact forces, and improving its safety in use. After welding is completed, trim and clean up the excess steel bars and steel strands. Lines and welding spatters ensure the neatness and flatness of the surface of the reinforced safety net, which is conducive to the uniform spraying of subsequent coatings. A layer of primer, three layers of intermediate layers and a layer of topcoat are sprayed on the surface of the reinforced safety net in turn. Each layer is naturally cured after spraying. The primer can enhance the adhesion and corrosion resistance of the coating, the intermediate layer can increase the thickness and durability of the coating, and the topcoat can protect the coating from erosion by the external environment. Each layer is naturally cured after spraying to ensure that the coating can be fully dried and form a solid protective layer, thereby extending the service life of the reinforced safety net. Therefore, it can solve the problems of improving the structural strength of the reinforced safety net and enhancing the safety and practicality of the reinforced safety net. DETAILED DESCRIPTION

[0049] The technical solutions in the embodiments of the present invention are described clearly and completely. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0050] Embodiment 1,

[0051] A manufacturing process of a reinforced safety net with strong weather resistance. The manufacturing process of the reinforced safety net is as follows:

[0052] S1. Remove impurities from the surface of steel wires, steel bars and steel strands, clean and dry them, and perform galvanizing and coating on the dried steel wires, steel bars and steel strands;

[0053] In S1, the following is also included:

[0054] S11, using a wire brush and a grinder to remove rust and scale on the surface of the steel wire, then soaking the steel wire in dilute sulfuric acid to pickle and remove the rust layer, using a high-pressure water gun to wash away impurities on the surface of the steel wire, wiping off moisture on the surface of the steel wire and then drying;

[0055] S12. Use sandblasting to remove the rust layer on the surface of steel bars and steel strands, and use a high-pressure air gun to remove the dust and residues left after rust removal;

[0056] S13, coating the surface of the steel wire, steel bar and steel strand with a layer of zinc chloride and then sending them into a hot-dip galvanizing furnace, so that the zinc liquid adheres to the surface of the steel wire, steel bar and steel strand and forms a zinc coating. After the galvanizing is completed, the steel wire, steel bar and steel strand are cooled, cleaned and dried;

[0057] S14. Spray a layer of primer, three layers of intermediate layers and a layer of topcoat on the surface of the dried steel wire, steel bar and steel strand in sequence, and allow each layer to cure naturally after spraying.

[0058] A reinforced safety net with strong weather resistance and a manufacturing process thereof, wherein the steel wire is zinc-5% aluminum-rare earth alloy steel wire, the diameter is 4.0 mm, and the strength limit is 500 N / mm².

[0059] Furthermore, zinc-5% aluminum-rare earth alloy steel wire is used. This alloy steel wire not only has excellent corrosion resistance, but also combines the sacrificial anode protection of zinc and the weather resistance of aluminum. The addition of rare earth elements further improves the mechanical properties and corrosion resistance of the alloy. The diameter of the steel wire is 4.0mm, and the strength limit reaches 500N / mm², ensuring the high strength and durability of the safety net.

[0060] Use a wire brush to initially remove the rust and scale on the surface, and then further grind it with a grinder to ensure that the surface roughness of the steel wire is appropriate to facilitate the subsequent coating adhesion. Soak the steel wire in dilute sulfuric acid for chemical pickling to effectively remove the deep rust layer of the steel wire. Rinse with a high-pressure water gun to thoroughly remove residual impurities on the surface to ensure that the surface of the steel wire is clean and free of dirt. Wipe and dry it to prevent residual moisture from affecting the subsequent galvanizing quality of the steel wire.

[0061] The sandblasting method is used to remove rust, using high-speed sand to impact the surface, effectively removing the rust layer and attachments of the steel bars and steel strands, while increasing the surface roughness. The high-pressure air gun removes the dust and residues generated after rust removal to ensure that the surface of the steel bars and steel strands is clean and free of impurities;

[0062] A layer of zinc chloride is evenly coated on the surface of the pretreated steel wire, steel bar and steel strand as a plating aid to promote the combination of zinc liquid and substrate. The steel wire, steel bar and steel strand are sent to the hot-dip galvanizing furnace. The zinc liquid is melted by high temperature and adheres to the surface of the steel wire, steel bar and steel strand to form a dense zinc coating, providing excellent anti-corrosion protection. After the galvanizing is completed, it is quickly cooled, cleaned and dried to prevent the zinc layer from oxidation or contamination.

[0063] On the dried galvanized layer, a layer of primer is first sprayed to enhance the adhesion of the coating to the steel wire, steel bars and steel strands, and to provide a good foundation for subsequent coatings. Then three layers of intermediate layers are sprayed, and each layer is fully naturally cured to form a strong and weather-resistant intermediate protective layer. Finally, a layer of topcoat is sprayed, which not only beautifies the appearance, but also further improves the weather resistance and corrosion resistance of the steel wire, steel bars and steel strands.

[0064] Embodiment 2:

[0065] A manufacturing process for a reinforced safety net with strong weather resistance, wherein the primer is an epoxy zinc-rich primer, model number is Daqiao H06-7 epoxy zinc-rich primer, the three intermediate layers are epoxy micaceous iron intermediate paint, epoxy high build intermediate paint and epoxy micaceous iron intermediate paint, models are Lanling Paint H53-6 epoxy micaceous iron anti-rust paint and Xindingyan XDY-Q515 epoxy high build paint respectively, the topcoat is acrylic polyurethane topcoat, model number is BS04-1 various colors of acrylic polyurethane topcoat.

[0066] Furthermore, the primer layer is an epoxy zinc-rich primer, and the model is Daqiao H06-7 epoxy zinc-rich primer. The epoxy zinc-rich primer has excellent anti-corrosion and anti-rust properties and can effectively resist the erosion of corrosive media. Daqiao H06-7 epoxy zinc-rich primer has a high zinc content and has good cathodic protection, which can further improve the anti-corrosion performance.

[0067] The three intermediate layers are epoxy micaceous iron intermediate paint, epoxy high build intermediate paint and epoxy micaceous iron intermediate paint.

[0068] The model of epoxy micaceous iron intermediate paint is Lanling Paint H53-6, which has good linking and sealing properties, can enhance the overall adhesion of the coating, and has excellent wear resistance and corrosion resistance. The model of epoxy thick paste intermediate paint is Xindingyan XDY-Q515, which has excellent shielding properties, can block corrosive media, acids, alkalis and solvents, and provide an additional protective barrier. It also has strong mechanical properties, good impact resistance and wear resistance, and can withstand various stresses in daily use.

[0069] The topcoat is acrylic polyurethane topcoat, model BS04-1 various colors of acrylic polyurethane topcoat, which has strong weather resistance, can resist the influence of ultraviolet rays and extreme weather conditions, maintain the long-term stability of the coating, and has good decorative properties. It provides a variety of color options, has good gloss and visual effects, and enhances the overall aesthetics. At the same time, it has strong chemical resistance and good resistance to a variety of chemicals, ensuring the stability of the coating in complex environments.

[0070] Embodiment 3,

[0071] A manufacturing process of a reinforced safety net with strong weather resistance. The manufacturing process of the reinforced safety net is as follows:

[0072] S2. Surface treatment of polyester fiber and polyacrylonitrile fiber;

[0073] In S2, it also includes the following:

[0074] S21, washing the polyester fiber and the polyacrylonitrile fiber with a detergent, then rinsing them with deionized water and drying them;

[0075] S22, coating the coupling agent and the tackifier on the surface of the polyester fiber and the polyacrylonitrile fiber in sequence, and drying and curing after each coating.

[0076] Further, the polyester fiber and the polyacrylonitrile fiber are thoroughly cleaned with a detergent to remove various pollutants attached to the surface. After the cleaning is completed, the fiber is rinsed with deionized water for multiple times to ensure that the detergent residue is completely removed. The cleaned fiber is placed under suitable conditions for drying to prevent residual moisture from affecting the subsequent treatment effect;

[0077] A layer of coupling agent is first applied on the surface of the dried polyester fiber and polyacrylonitrile fiber. After each application of the coupling agent, it is necessary to perform drying and curing treatment to ensure that the coupling agent can firmly adhere to the fiber surface to form an effective bonding layer. Then, a layer of tackifier is continued to be applied on the fiber surface coated with the coupling agent. The tackifier can further enhance the adhesion between the fiber and the resin, and enhance the mechanical properties and durability of the reinforced safety net. Similarly, after applying the tackifier, it is also necessary to perform drying and curing treatment to ensure that it can fully play its role and improve the overall strength and weather resistance of the reinforced safety net.

[0078] Embodiment 4:

[0079] A manufacturing process of a reinforced safety net with strong weather resistance, the manufacturing process of the reinforced safety net is as follows: S3, preparing a nano suspension;

[0080] In S3, it also includes the following:

[0081] S31. The nanomaterials include nano silicon dioxide, nano aluminum oxide and nano titanium dioxide. The nano silicon dioxide, nano aluminum oxide and nano titanium dioxide are uniformly mixed in a ratio of 6:4:1 and added into deionized water. A dispersant is also added thereto. Under the action of ultrasound, the nano silicon dioxide, nano aluminum oxide and nano titanium dioxide are fully dispersed in the deionized water to obtain a nano suspension.

[0082] Furthermore, nano-silicon dioxide, nano-aluminum oxide and nano-titanium dioxide are selected as reinforcing materials, accurately weighed in a ratio of 6:4:1, and after the weighed nanomaterials are evenly mixed, they are slowly added to deionized water. Deionized water is used as a solvent to effectively reduce the impact of impurities on the dispersibility of nanoparticles. Subsequently, a dispersant is added, and under the action of ultrasonic equipment, high-frequency vibration is used to fully disperse the nanoparticles in the deionized water to avoid agglomeration, thereby forming a uniform and stable nanosuspension.

[0083] Embodiment 5,

[0084] A manufacturing process of a reinforced safety net with strong weather resistance, the manufacturing process of the reinforced safety net is as follows: S4, spinning the nano material with polyester fiber and polyacrylonitrile fiber;

[0085] In S4, it also includes the following:

[0086] S41, taking 85% of the total amount of the nano suspension for oven drying, sieving the dried nano silicon dioxide, nano aluminum oxide and nano titanium dioxide, and then mixing them evenly with polyester fiber and polyacrylonitrile fiber, feeding them into a melt spinning machine, melting and extruding at high temperature to obtain nano synthetic fibers, and stretching and heat setting the nano synthetic fibers;

[0087] The mixing ratio of S42, nanomaterial, polyester fiber and polyacrylonitrile fiber is 11:109:80.

[0088] Further, first, 85% of the total amount of the nano suspension is taken for oven drying to remove the water in the nano suspension so that the nano silicon dioxide, nano aluminum oxide and nano titanium dioxide reach a dry state suitable for spinning. The dried nanoparticles need to be sieved due to agglomeration or uneven particle size. Sieving can ensure the uniformity and consistency of the nanoparticles, which is beneficial to the subsequent mixing with the fiber and spinning process;

[0089] The treated nanoparticles are mixed evenly with polyester fiber and polyacrylonitrile fiber in a ratio of 11:109:80, which can balance the reinforcing effect of the nanomaterials and the basic properties of the fibers. The mixed materials are fed into a melt spinning machine, melted and extruded at high temperature to form nano synthetic fibers;

[0090] In order to further improve the performance of nano synthetic fibers, they are stretched and heat-set. Stretching can increase the orientation and strength of nano synthetic fibers, while heat setting can fix the shape and size of nano synthetic fibers to prevent deformation during use.

[0091] Nanomaterials are effectively blended with polyester fibers and polyacrylonitrile fibers and made into nanosynthetic fibers through melt spinning technology. Nanosynthetic fibers not only inherit the excellent properties of polyester fibers and polyacrylonitrile fibers, but also significantly improve their weather resistance, strength and durability due to the addition of nanomaterials.

[0092] Embodiment 6,

[0093] A manufacturing process of a reinforced safety net with strong weather resistance. The manufacturing process of the reinforced safety net is as follows:

[0094] S5. Use a weaving machine to weave the steel wire and nano synthetic fibers into a safety net. After weaving, trim and organize the safety net.

[0095] Furthermore, steel wires and nano-synthetic fibers are used as warp and weft respectively, and the two are interwoven together through the mechanical movement of a weaving machine to form the basic structure of the safety net. After weaving, there are excess fibers or steel wires on the edge of the safety net. Scissors are used to trim the edges to ensure that the safety net looks neat and beautiful. The trimmed safety net is sorted, including removing impurities on the surface and adjusting the flatness of the net surface. At the same time, the overall quality of the safety net is checked to avoid damage and breakage defects.

[0096] Embodiment 7,

[0097] A manufacturing process of a reinforced safety net with strong weather resistance. The manufacturing process of the reinforced safety net is as follows:

[0098] S6. Welding steel bars and steel strands on the safety net to obtain a reinforced safety net;

[0099] In S6, it also includes the following:

[0100] S61. Distribute the steel bars and steel strands evenly on the safety net and initially fix them with clamps. Use an electric welder to weld the steel bars and steel strands to the safety net. Weld symmetrically arranged steel bars and steel strands again at the stress points and connections of the safety net. After welding, trim and clean excess steel bars, steel strands and welding spatter.

[0101] Further, first, the steel bars and steel strands are evenly distributed on the entire safety net, and the steel bars and steel strands are initially fixed on the safety net using a clamp, which can keep the position of the steel bars and steel strands stable during welding and prevent movement or dislocation during welding;

[0102] Next, use an electric welder to weld the steel bars and strands to the safety net. During the welding process, ensure the quality of the weld to avoid slag inclusions and unfused defects. At the same time, control the welding current, voltage and welding speed to ensure the strength and beauty of the weld.

[0103] At the stress points and joints of the safety net, symmetrically arranged steel bars and steel strands need to be welded again. These additional reinforcement welds can significantly improve the load-bearing capacity and stability of the safety net, especially when subjected to external impact or vibration;

[0104] After welding is completed, use tools to trim excess steel bars, steel strands and welding spatter to ensure a neat appearance of the reinforced safety net and avoid damage to other objects or injuries to people due to sharp edges during subsequent use.

[0105] Embodiment 8,

[0106] A manufacturing process of a reinforced safety net with strong weather resistance. The manufacturing process of the reinforced safety net is as follows:

[0107] S7. Spray a layer of primer, three layers of intermediate layers and a layer of topcoat on the surface of the reinforced safety net in sequence, and allow each layer to cure naturally after spraying.

[0108] Furthermore, as the first coating, the primer mainly serves to enhance the adhesion between the intermediate layer and the reinforced safety net substrate, while providing preliminary anti-corrosion and anti-rust functions, ensuring that the primer evenly covers the entire surface of the reinforced safety net without missing or sagging, and avoiding poor drying due to excessive thickness or affecting the protective effect due to excessive thinness. After spraying, the reinforced safety net is placed in a well-ventilated environment for natural curing;

[0109] The middle layer mainly plays the role of enhancing anti-corrosion, anti-ultraviolet and wear resistance. Through multi-layer spraying, a thicker protective layer can be formed to improve the weather resistance and service life of the safety net. After the primer is completely cured, the three layers of the middle layer are sprayed in sequence. Before each layer is sprayed, the quality of the previous layer of coating must be checked to ensure that there are no defects. After each layer of the middle layer is sprayed, it must be naturally cured to ensure that each layer is completely cured before spraying the next layer;

[0110] As the outermost coating, the topcoat mainly plays a decorative and protective role. The topcoat has good gloss, weather resistance and pollution resistance to maintain the beauty and protective performance of the reinforced safety net. After the last intermediate layer is completely cured, the topcoat is sprayed. Ensure that the topcoat is uniform and smooth, without bubbles and sagging defects. The topcoat is also naturally cured after spraying.

[0111] Embodiment 9,

[0112] A manufacturing process of a reinforced safety net with strong weather resistance. The manufacturing process of the reinforced safety net is as follows:

[0113] S8. After roughening the reinforced safety net, a nano coating, a waterproof layer, an anti-ultraviolet layer and an antistatic layer are coated on the surface of the reinforced safety net;

[0114] In S8, it also includes the following:

[0115] S81. Roughening treatment includes using a sandblasting machine to sandblast the surface of the reinforced safety net and applying a layer of interface agent on the surface of the reinforced safety net;

[0116] S82, taking 85% of the total amount of the nano suspension and adding it to the polyurethane resin, the ratio of the nano suspension to the polyurethane resin is 1:1, and mixing them evenly by mechanical stirring to obtain a nano coating, and spraying the nano coating evenly on the surface of the reinforced safety net for multiple times, and using a hot air blower for thermal curing after each spraying;

[0117] S83, coating a waterproofing agent, an anti-ultraviolet agent and an antistatic agent on the surface of the nano coating in sequence, drying and curing after each coating, to form a waterproof layer, an anti-ultraviolet layer and an antistatic layer in sequence.

[0118] Further, the surface of the reinforced safety net is sandblasted with a sandblasting machine to remove surface impurities and increase surface roughness, thereby improving the adhesion of subsequent coatings. A layer of interface agent is applied on the mesh surface of the reinforced safety net after sandblasting. The main function of the interface agent is to enhance the bonding force between the coating and the substrate, ensuring that the coating can be firmly attached to the mesh surface. The application should be uniform and without omissions, and the next step can be performed after the interface agent is dry;

[0119] 85% of the total amount of the nano suspension is added to the polyurethane resin, the ratio of the nano suspension to the polyurethane resin is 1:1, and the two are fully mixed by mechanical stirring to obtain a nano coating, and the nano coating is sprayed evenly on the surface of the reinforced safety net multiple times. After each spraying, a hot air blower is used for thermal curing to accelerate the drying and curing process of the coating. Through multiple coatings and thermal curing treatments, a dense and uniform nano coating can be formed, which significantly improves the weather resistance and wear resistance of the reinforced safety net;

[0120] A layer of waterproofing agent is applied on the surface of the nano coating, and the waterproofing agent is evenly and completely applied on the nano coating, and then dried and cured. The waterproofing layer prevents moisture from penetrating into the interior of the safety net, thereby protecting its structure from damage;

[0121] A layer of anti-UV agent is coated on the surface of the waterproof layer. The anti-UV agent can effectively absorb or reflect ultraviolet radiation to prevent ultraviolet rays from damaging the safety net material. Finally, a layer of anti-static agent is coated on the surface of the anti-UV layer. The anti-static layer can reduce static electricity accumulation and prevent sparks or discharges caused by static electricity from causing harm to the safety net and its surrounding environment.

[0122] Embodiment 10,

[0123] A manufacturing process for a reinforced safety net with strong weather resistance. The manufacturing process for the reinforced safety net is as follows: S9. Performing a tensile test and a weather resistance test on the reinforced safety net.

[0124] In S9, it also includes the following:

[0125] S91. Randomly select specimens 1, 2, 3, 4, 5 and 6 from the reinforced safety net, fix one end of the reinforced safety net in the upper clamp of the tensile testing machine, and the other end in the lower clamp, start the tensile testing machine, apply tension to the specimens until the specimens break, and record the tensile force value when the specimens break. The tensile strength of the safety net shall not be less than 300 MPa;

[0126] S92. Randomly select sample 7, sample 8, sample 9, sample 10, sample 11 and sample 12 from the reinforced safety net, place the reinforced safety net in a constant temperature and humidity test box, set the temperature to 80°C and the relative humidity to 95%. After 4 weeks, conduct a tensile test on the reinforced safety net again. At this time, the tensile strength of the safety net should be no less than 300MPa to be qualified.

[0127] Furthermore, the tensile strength of the safety net is calculated as: σ=F / S;

[0128] Among them, σ is the tensile strength, the unit is MPa, F is the tensile force when the sample breaks, the unit is N, S is the original cross-sectional area of ​​the sample, the unit is mm 2 ;

[0129] The tensile test results are as follows:

[0130] Sample 1 Sample 2 Sample 3 Sample 4 Sample 5 Sample 6 Tensile strength / MPa 458 513 374 482 524 485 result qualified qualified qualified qualified qualified qualified

[0131] The tensile test results show that the performance of randomly selected samples 1 to 6 in the tensile test exceeded the requirement that the tensile strength of the safety net should be no less than 300MPa. Therefore, the tensile strength of the reinforced safety net prepared using the manufacturing process of the reinforced safety net is qualified and the tensile strength is good.

[0132] Weathering test results are as follows:

[0133] Sample 7 Sample 8 Sample 9 Sample 10 Sample 11 Sample 12 Tensile strength / MPa 378 349 327 410 478 371 result qualified qualified qualified qualified qualified qualified

[0134] The weather resistance test results show that after randomly selected samples 7 to 12 were placed in a constant temperature and humidity test chamber at a temperature of 80°C and a relative humidity of 95% for 4 weeks, their tensile strength was still not less than the requirement of 300MPa. Therefore, the reinforced safety net prepared using the manufacturing process of the reinforced safety net can withstand the test of harsh environments in actual applications and maintain its structural integrity and safety.

[0135] Embodiment eleven,

[0136] A reinforced safety net with strong weather resistance is a reinforced safety net made according to the manufacturing process of the reinforced safety net with strong weather resistance.

[0137] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

Claims

1. A manufacturing process for a weather-resistant reinforced safety net, characterized in that: The manufacturing process of reinforced safety net is as follows: S1. Remove impurities from the surface of steel wires, steel bars and steel strands, clean and dry them, and perform galvanizing and coating on the dried steel wires, steel bars and steel strands; S2. Surface treatment of polyester fiber and polyacrylonitrile fiber; S3, preparing nanosuspension; S4, blending the nanomaterial with polyester fiber and polyacrylonitrile fiber and spinning them; S5. Use a weaving machine to weave the steel wire and nano synthetic fiber into a safety net. After weaving, trim and arrange the safety net; S6. Welding steel bars and steel strands on the safety net to obtain a reinforced safety net; S7. Spray one layer of primer, three layers of intermediate layers and one layer of topcoat on the surface of the reinforced safety net in sequence, and allow each layer to cure naturally after spraying; S8. After roughening the reinforced safety net, a nano coating, a waterproof layer, an anti-ultraviolet layer and an antistatic layer are coated on the surface of the reinforced safety net; S9. Conduct tensile test and weather resistance test on the reinforced safety net.

2. The manufacturing process of a weather-resistant reinforced safety net according to claim 1, characterized in that: In S1, the following are also included: S11, using a wire brush and a grinder to remove rust and scale on the surface of the steel wire, then soaking the steel wire in dilute sulfuric acid to pickle and remove the rust layer, using a high-pressure water gun to wash away impurities on the surface of the steel wire, wiping off moisture on the surface of the steel wire and then drying; S12. Use sandblasting to remove the rust layer on the surface of steel bars and steel strands, and use a high-pressure air gun to remove the dust and residues left after rust removal; S13, coating the surface of the steel wire, steel bar and steel strand with a layer of zinc chloride and then sending them into a hot-dip galvanizing furnace, so that the zinc liquid adheres to the surface of the steel wire, steel bar and steel strand and forms a zinc coating. After the galvanizing is completed, the steel wire, steel bar and steel strand are cooled, cleaned and dried; S14. Spray a layer of primer, three layers of intermediate layers and a layer of topcoat on the surface of the dried steel wire, steel bar and steel strand in sequence, and allow each layer to cure naturally after spraying.

3. The manufacturing process of a weather-resistant reinforced safety net according to claim 1, characterized in that: The steel wire is zinc-5% aluminum-rare earth alloy steel wire with a diameter of 4.0mm and a strength limit of 500N / mm²; The primer is epoxy zinc-rich primer, model Daqiao H06-7 epoxy zinc-rich primer. The three intermediate layers are epoxy micaceous iron intermediate paint, epoxy high build intermediate paint and epoxy micaceous iron intermediate paint, models Lanling Paint H53-6 epoxy micaceous iron anti-rust paint and Xindingyan XDY-Q515 epoxy high build paint respectively. The topcoat is acrylic polyurethane topcoat, model BS04-1 various colors of acrylic polyurethane topcoat.

4. The manufacturing process of a weather-resistant reinforced safety net according to claim 3 is characterized in that: In S2, it also includes the following: S21, washing the polyester fiber and the polyacrylonitrile fiber with a detergent, then rinsing them with deionized water and drying them; S22, coating the coupling agent and the tackifier on the surface of the polyester fiber and the polyacrylonitrile fiber in sequence, and drying and curing after each coating.

5. The manufacturing process of a weather-resistant reinforced safety net according to claim 1, characterized in that: In S3, it also includes the following: S31. The nanomaterials include nano silicon dioxide, nano aluminum oxide and nano titanium dioxide. The nano silicon dioxide, nano aluminum oxide and nano titanium dioxide are uniformly mixed in a ratio of 6:4:1 and added into deionized water. A dispersant is also added thereto. Under the action of ultrasound, the nano silicon dioxide, nano aluminum oxide and nano titanium dioxide are fully dispersed in the deionized water to obtain a nano suspension.

6. The manufacturing process of a weather-resistant reinforced safety net according to claim 1, characterized in that: In S4, it also includes the following: S41, taking 85% of the total amount of the nano suspension for oven drying, sieving the dried nano silicon dioxide, nano aluminum oxide and nano titanium dioxide, and then mixing them evenly with polyester fiber and polyacrylonitrile fiber, feeding them into a melt spinning machine, melting and extruding at high temperature to obtain nano synthetic fibers, and stretching and heat setting the nano synthetic fibers; The mixing ratio of S42, nanomaterial, polyester fiber and polyacrylonitrile fiber is 11:109:

80.

7. The manufacturing process of a weather-resistant reinforced safety net according to claim 1, characterized in that: In S6, it also includes the following: S61. Distribute the steel bars and steel strands evenly on the safety net and initially fix them with clamps. Use an electric welder to weld the steel bars and steel strands to the safety net. Weld symmetrically arranged steel bars and steel strands again at the stress points and connections of the safety net. After welding, trim and clean excess steel bars, steel strands and welding spatter.

8. The manufacturing process of a weather-resistant reinforced safety net according to claim 1, characterized in that: In S8, it also includes the following: S81. Roughening treatment includes using a sandblasting machine to sandblast the surface of the reinforced safety net and applying a layer of interface agent on the surface of the reinforced safety net; S82, taking 85% of the total amount of the nano suspension and adding it to the polyurethane resin, the ratio of the nano suspension to the polyurethane resin is 1:1, and mixing them evenly by mechanical stirring to obtain a nano coating, and spraying the nano coating evenly on the surface of the reinforced safety net for multiple times, and using a hot air blower for thermal curing after each spraying; S83, coating a waterproofing agent, an anti-ultraviolet agent and an antistatic agent on the surface of the nano coating in sequence, drying and curing after each coating, to form a waterproof layer, an anti-ultraviolet layer and an antistatic layer in sequence.

9. The manufacturing process of a weather-resistant reinforced safety net according to claim 1, characterized in that: In S9, it also includes the following: S91. Randomly select specimens 1, 2, 3, 4, 5 and 6 from the reinforced safety net, fix one end of the reinforced safety net in the upper clamp of the tensile testing machine, and the other end in the lower clamp, start the tensile testing machine, apply tension to the specimens until the specimens break, and record the tensile force value when the specimens break. The tensile strength of the safety net shall not be less than 300 MPa; S92. Randomly select sample 7, sample 8, sample 9, sample 10, sample 11 and sample 12 from the reinforced safety net, place the reinforced safety net in a constant temperature and humidity test box, set the temperature to 80°C and the relative humidity to 95%. After 4 weeks, conduct a tensile test on the reinforced safety net again. At this time, the tensile strength of the safety net should be no less than 300MPa to be qualified.

10. A reinforced safety net with strong weather resistance, characterized in that: A reinforced safety net made according to the manufacturing process according to any one of claims 1 to 9.