High-strength corrosion-resistant glass fiber reinforced plastic composite material and preparation method thereof

Abstract

The invention discloses a high-strength corrosion-resistant glass fiber reinforced plastic composite material and a preparation method thereof, and the high-strength corrosion-resistant glass fiber reinforced plastic composite material comprises the following raw materials in parts: 60-100 parts of a matrix, 20-50 parts of reinforcing fibers, 1-5 parts of a modifier, 1-5 parts of a reinforcer, 1-5 parts of a curing agent, 1-5 parts of a defoaming agent, 1-5 parts of a flatting agent, 1-5 parts of a flame retardant, 1-5 parts of an ultraviolet light absorber and 1-5 parts of a pigment, the matrix is specifically made of high-performance phenolic epoxy vinyl ester resin, the reinforcing fibers are specifically made of high-strength glass fiber cloth, the matrix, the reinforcing fibers and multiple functional auxiliaries are reasonably proportioned to form a synergistic enhancement effect, the mechanical strength and corrosion resistance of the glass fiber reinforced plastic composite material are remarkably improved, and the glass fiber reinforced plastic composite material is suitable for being used in the field of glass fiber reinforced plastics. The matrix provides stable chemical resistance and binding power, the reinforcing fibers endow high tensile strength and impact resistance, the modifier optimizes the interface bonding effect, and the reinforcement fills microdefects to improve compactness, so that the material keeps long-term structural integrity and functional stability in a severe environment.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of glass steel composite material, and particularly relates to a high-strength corrosion-resistant glass steel composite material and a preparation method thereof. BACKGROUND

[0002] Glass steel, the scientific name of which is fiber reinforced plastic, is commonly known as FRP (Fiber Reinforced Plastics), that is, fiber reinforced composite plastic, which generally refers to reinforced plastic using glass fiber as reinforcing material and unsaturated polyester, epoxy resin and phenolic resin matrix, and is also known as glass fiber reinforced plastic or glass steel, which is different from tempered glass.

[0003] Traditional glass steel has limited corrosion resistance, the ester bond of unsaturated polyester resin is easily hydrolyzed in a strong alkali environment, leading to performance degradation, and the strength and modulus also need to be improved, the interface bonding force between traditional glass fiber and the resin matrix is insufficient, which easily leads to stress concentration and micro damage, the heat resistance is general, the long-term use temperature is low, and the application of the glass steel in a high-temperature environment is limited, therefore, the present application provides a high-strength corrosion-resistant glass steel composite material and a preparation method thereof to solve the above problems. SUMMARY

[0004] Based on the technical problems of the background technology that the glass steel has limited corrosion resistance, the ester bond of unsaturated polyester resin is easily hydrolyzed in a strong alkali environment, leading to performance degradation, and the strength and modulus also need to be improved, the interface bonding force between traditional glass fiber and the resin matrix is insufficient, which easily leads to stress concentration and micro damage, the heat resistance is general, the long-term use temperature is low, and the application of the glass steel in a high-temperature environment is limited, the present application provides a high-strength corrosion-resistant glass steel composite material and a preparation method thereof.

[0005] The high-strength corrosion-resistant glass steel composite material provided by the present application comprises raw materials in parts by weight: a matrix 60-100 parts, a reinforcing fiber 20-50 parts, a modifier 1-5 parts, a reinforcing body 1-5 parts, a curing agent 1-5 parts, a defoaming agent 1-5 parts, a leveling agent 1-5 parts, a flame retardant 1-5 parts, an ultraviolet absorber 1-5 parts and a pigment 1-5 parts.

[0006] Preferably, the specific material of the matrix is high-performance phenolic epoxy vinyl ester resin, the specific material of the reinforcing fiber is high-strength glass fiber cloth, the specific material of the modifier is silane coupling agent, the specific material of the reinforcing body is nano silicon dioxide, the specific formula of the curing agent is a mixture of methyl ethyl ketone peroxide and cobalt isooctoate, and the specific material of the pigment is a chemical-resistant pigment paste.

[0007] Further, high-performance phenolic epoxy vinyl ester resin is selected as the matrix, which has excellent acid and alkali resistance and thermal stability, high-strength glass fiber cloth is selected as the reinforcing fiber, which provides a uniform distribution of the bearing network, silane coupling agent is selected as the modifier, which strengthens the interfacial adhesion between the fiber and the resin, nano-silicon dioxide is selected as the reinforcing body, which increases the hardness and wear resistance of the material, peroxide methyl ethyl ketone and cobalt isooctanoate are compounded as the curing agent, which realizes low-temperature and high-efficiency curing, and the chemical resistance pigment paste ensures that the color is persistent and does not fade, thereby improving the durability and mechanical properties of the composite material in the corrosive medium as a whole.

[0008] Preferably, the specific material of the defoaming agent is a non-silicon high molecular polymer, polyacrylate and hydrophobic wax mixed to prepare, and the specific formula is 2-7:4-9:1-8, and the specific material of the leveling agent is a polyester modified polysiloxane and an acrylate copolymer mixed to prepare, and the specific formula is 1-3:1-8.

[0009] Further, the defoaming agent adopts a non-silicon high molecular polymer, polyacrylate and hydrophobic wax composite system, which effectively inhibits the generation of bubbles in the resin mixing process, avoids internal hole defects of the finished product, the leveling agent uses a polyester modified polysiloxane and an acrylate copolymer, which improves the flow and spreading properties of the resin, ensures that the formed surface is smooth and uniform, reduces the generation of micro-cracks, thereby enhancing the overall density and impermeability of the material, and improving the corrosion resistance and fatigue life.

[0010] Preferably, the specific material of the flame retardant is aluminum hydroxide, magnesium hydroxide and ammonium polyphosphate mixed to prepare, and the specific formula is 1-5:1-7:2-7, and the specific material of the ultraviolet absorber is a mixture of benzophenone, benzotriazole and triazine derivatives, and the specific formula is 1-8:2-6:4-7.

[0011] Further, the flame retardant is synergistically formed by aluminum hydroxide, magnesium hydroxide and ammonium polyphosphate, forming a high-efficiency heat-insulating and flame-retardant layer, reducing the fire risk, and the ultraviolet absorber is compounded by benzophenone, benzotriazole and triazine derivatives, which can absorb different wavelengths of ultraviolet radiation, prevent the polymer chain from breaking and the color from changing, and these components together enhance the anti-aging ability and safety performance of the material in outdoor and high-temperature environments.

[0012] The application further provides a preparation method of the high-strength corrosion-resistant glass steel composite material. S1: pretreatment; S2: preparation of a resin solution; S3: vacuum introduction molding; S4: curing and post-processing.

[0013] Preferably, in the S1 step, the mold is first treated, the mold is uniformly coated with a release agent, a corrosion-resistant gel coat compatible with the base resin is coated, sprayed or brushed, the thickness is about 0.4-0.6mm, and the initial gel is prepared, then the reinforcing fibers are laid, the glass fiber cloth with calculated size is designed to lay the layer sequence and direction on the mold, the layer design needs to consider the stress condition of the product, and finally the flow guide system is prepared, the flow guide net, flow guide pipe and vacuum bag film are laid on the fiber reinforced body, and the vacuum bag is sealed.

[0014] Further, in the pretreatment step, the mold is coated with a release agent and a corrosion-resistant gel coat to prevent adhesion and enhance the surface protective layer, the reinforcing fibers are laid according to the stress design, the load distribution and structural strength are optimized, the flow guide system is arranged to ensure reasonable resin flow path, avoid dry areas and uneven infiltration, and provide complete preparation for subsequent molding, thereby ensuring that the composite material is defect-free and the interface is firmly combined.

[0015] Preferably, in the S2 step, a mixer is selected, the base, modifier, reinforcing agent and curing agent are added to the inside of the mixer, and stirred at a speed of 250-350 rpm for 10-20 minutes, and finally the defoaming agent, leveling agent, flame retardant, ultraviolet absorber and pigment are added and continue to stir for 10-15 minutes to prepare the glass steel solution.

[0016] Further, the resin solution is prepared by mechanical stirring to fully mix the base, modifier, reinforcing agent and curing agent, promote the reactivity of each component, add functional additives such as defoaming agent, leveling agent and flame retardant to improve the operability and formability of the resin, and prepare a solution with stable viscosity and low bubble content to provide ideal fluid characteristics for vacuum introduction and ensure full fiber infiltration and uniform material structure.

[0017] Preferably, in the S3 step, the mixed resin solution tank is connected to the flow guide pipe, the vacuum pump is turned on to make the vacuum degree in the mold cavity reach-0.95 bar or more, the resin valve is opened, and the atmospheric pressure is used to quickly and smoothly absorb the resin solution into the fiber reinforced body and fully infiltrate it, the resin flow front is observed to ensure that all areas are fully infiltrated without dry spots.

[0018] Further, the vacuum introduction molding is carried out under high vacuum, the pressure difference is used to drive the resin to quickly fill the fiber gap, and the air and volatile components are removed to achieve complete infiltration and dense structure, the resin flow front monitoring ensures that there are no missed areas, avoids dry spots and weak interfaces, forms a uniform composite material body, and significantly improves the mechanical strength and corrosion resistance.

[0019] Preferably, in the S4 step, the product is preliminarily cured at room temperature (25℃) for 4-8 hours under vacuum, then post-cured, and after demolding, the product is post-cured at 70-80℃ for 4-8 hours, finally the flash is cut off, the product is processed to the final size, and appearance, thickness and non-destructive testing are performed.

[0020] Further, the curing process is carried out in stages, preliminary curing at room temperature maintains shape stability, post-curing at elevated temperature promotes complete crosslinking of the resin, enhances thermal stability and mechanical properties of the material, post-processing including trimming and size processing ensures product accuracy and appearance quality, non-destructive testing verifies internal integrity, and the overall steps enable the composite material to meet the design strength and durability requirements.

[0021] Advantages of the present application: 1. The curing agent ensures complete crosslinking reaction, the defoaming agent eliminates internal bubbles to avoid stress concentration, the leveling agent improves surface flatness to reduce corrosion initiation points, the flame retardant enhances fire safety, the ultraviolet absorber inhibits photo-degradation, and the pigment provides aesthetic and identification functions 2. Through systematic preparation steps including pretreatment, resin solution preparation, vacuum infusion molding and curing post-processing, the composite material production process is controllable and has good repeatability, pretreatment lays the foundation for molding, resin preparation ensures uniform dispersion of components, vacuum infusion realizes complete fiber wetting, curing post-processing optimizes the final performance, the overall method improves product consistency and quality reliability, and the material has excellent strength and corrosion resistance The present application forms a synergistic reinforcing effect by reasonably proportioning the matrix, reinforcing fibers and various functional additives, significantly improves the mechanical strength and corrosion resistance of the glass steel composite material, the matrix provides stable chemical resistance and bonding force, the reinforcing fibers impart high tensile and impact resistance, the modifier optimizes the interface bonding effect, the reinforcing body fills micro defects to improve compactness, and the material maintains long-term structural integrity and functional stability in harsh environments. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 The workflow diagram for the present application is provided. DETAILED DESCRIPTION

[0023] The present application is further illustrated below in conjunction with specific examples.

[0024] Reference Figure 1 Example One The high-strength corrosion-resistant glass steel composite material in the embodiment comprises the following raw materials in parts: a matrix 61 parts, reinforcing fibers 20 parts, a modifier 2 parts, a reinforcing body 3 parts, a curing agent 4 parts, a defoaming agent 5 parts, a leveling agent 1 part, a flame retardant 1 part, an ultraviolet light absorber 1 part and pigments 2 parts, the specific material of the matrix is high-performance phenolic epoxy vinyl ester resin, the specific material of the reinforcing fibers is high-strength glass fiber cloth, the specific material of the modifier is a silane coupling agent, the specific material of the reinforcing body is nano silicon dioxide, the specific formula of the curing agent is a mixture of methyl ethyl ketone peroxide and cobalt isooctanoate, the specific material of the pigments is a chemical resistance pigment paste, the specific material of the defoaming agent is a mixture of a non-silicon high polymer, polyacrylate and a hydrophobic wax, the specific formula thereof is 2:4:1, the specific material of the leveling agent is a mixture of a polyester modified polysiloxane and an acrylic ester copolymer, the specific formula thereof is 1:3, the specific material of the flame retardant is a mixture of aluminum hydroxide, magnesium hydroxide and ammonium polyphosphate, the specific formula thereof is 1:1:2, and the specific material of the ultraviolet light absorber is a mixture of benzophenone, benzotriazole and a triazine derivative, the specific formula thereof is 1:2:4.

[0025] Further, the flame retardant is formed by the synergistic effect of aluminum hydroxide, magnesium hydroxide and ammonium polyphosphate, and forms a high-efficiency heat insulation and flame retardant layer, thereby reducing the fire risk, and the ultraviolet light absorber is compounded by benzophenone, benzotriazole and a triazine derivative, comprehensively absorbs ultraviolet radiation of different wavelengths, prevents the polymer chain from being broken and the color from being changed, and these components jointly enhance the anti-aging ability and safety performance of the material in outdoor and high-temperature environments.

[0026] The application further provides a preparation method of the high-strength corrosion-resistant glass steel composite material, comprising the following steps: S1: pretreatment, first, the mold is treated, a release agent is uniformly brushed on the mold, a corrosion-resistant gel coat compatible with the matrix resin is sprayed or brushed on the mold, the thickness is about 0.4 mm, and the gel coat is preliminarily gelled, then the reinforcing fibers are laid, the glass fiber cloth with the calculated size is designed to be laid on the mold in a layering sequence and direction, the layering design needs to consider the stress condition of the product, finally, a flow guide system is prepared, the flow guide net, the flow guide pipe and the vacuum bag film are laid on the fiber reinforcing body, and the vacuum bag is sealed well; S2: preparation of a resin solution, a stirrer is selected, the matrix, the modifier, the reinforcing body and the curing agent are added to the inside of the stirrer, stirring is performed at a speed of 250 rpm for 10 minutes, finally, the defoaming agent, the leveling agent, the flame retardant, the ultraviolet light absorber and the pigments are continuously stirred for 10 minutes, and the glass steel solution is prepared; S3: vacuum infusion molding, connecting the mixed resin glue tank to the flow guide pipe, opening the vacuum pump to make the vacuum degree in the mold cavity reach-0.95 bar or more, opening the resin valve, using atmospheric pressure to quickly and smoothly suck the resin glue into the fiber reinforced body and completely soak it, observing the resin flow front, ensuring that all areas are fully soaked, and there is no dry spot; S4: curing and post-processing, under vacuum, keeping at room temperature (25℃) for 5 hours for preliminary curing, then post-curing, after demolding, placing the product at 75℃ for 6 hours for post-curing, finally cutting off the flash, processing to the final size, and performing appearance, thickness and non-destructive testing.

[0027] Reference Figure 1 Example Two The high-strength corrosion-resistant glass steel composite material in this embodiment comprises the following raw materials in parts: a matrix 65 parts, a reinforcing fiber 23 parts, a modifier 1 part, a reinforcing body 2 parts, a curing agent 1 part, a defoaming agent 2 parts, a leveling agent 1 part, a flame retardant 1 part, an ultraviolet absorber 3 parts and a pigment 1 part. The specific material of the matrix is high-performance phenolic epoxy vinyl ester resin, the specific material of the reinforcing fiber is high-strength glass fiber cloth, the specific material of the modifier is silane coupling agent, the specific material of the reinforcing body is nano silicon dioxide, the specific formula of the curing agent is a mixture of methyl ethyl ketone peroxide and cobalt iso-octoate, the specific material of the pigment is a chemical-resistant pigment paste, the specific material of the defoaming agent is a mixture of non-silicon high molecular polymer, polyacrylate and hydrophobic wax, and the specific formula thereof is 3:5:6, the specific material of the leveling agent is a mixture of polyester modified polysiloxane and acrylic ester copolymer, and the specific formula thereof is 2:4, the specific material of the flame retardant is a mixture of aluminum hydroxide, magnesium hydroxide and ammonium polyphosphate, and the specific formula thereof is 3:2:3, and the specific material of the ultraviolet absorber is a mixture of benzophenone, benzotriazole and triazine derivatives, and the specific formula thereof is 2:2:5.

[0028] Further, the flame retardant is synergistically formed by aluminum hydroxide, magnesium hydroxide and ammonium polyphosphate to form a high-efficiency heat-insulating flame-retardant layer, thereby reducing the fire risk, and the ultraviolet absorber is compounded by benzophenone, benzotriazole and triazine derivatives to comprehensively absorb ultraviolet radiation of different wavelengths, thereby preventing polymer chain rupture and color change, and these components collectively enhance the anti-aging ability and safety performance of the material in outdoor and high-temperature environments.

[0029] The application further provides a preparation method of the high-strength corrosion-resistant glass steel composite material. S1: Pretreatment, first, the mold is treated, and the mold is evenly coated with a release agent, and then a corrosion-resistant gel coat is coated, which is compatible with the base resin, and is sprayed or brushed with a thickness of about 0.6mm, and then the initial gel is prepared, and the reinforcing fiber is laid, and the glass fiber cloth with the calculated size is designed to lay the layer sequence and direction on the mold, and the layer design needs to consider the stress condition of the product, and finally the flow guide system is prepared, and the flow guide net, flow guide pipe and vacuum bag film are laid on the fiber reinforced body, and the vacuum bag is sealed; S2: Resin solution preparation, select a blender, add the base, modifier, reinforcing agent and curing agent to the inside of the blender, stir at a speed of 300rpm for 15 minutes, and finally add the defoaming agent, leveling agent, flame retardant, ultraviolet absorber and pigment and continue to stir for 12 minutes to prepare the glass steel solution; S3: Vacuum infusion molding, connect the mixed resin glue tank to the flow guide pipe, open the vacuum pump to make the vacuum degree in the mold cavity reach-0.95bar or more, open the resin valve, and use atmospheric pressure to quickly and smoothly absorb the resin glue into the fiber reinforced body, and observe the resin flow front to ensure that all areas are fully infiltrated without dry spots; S4: Curing and post-processing, under vacuum, keep it at room temperature (25℃) for 6 hours to make it preliminary curing, then post-curing, after demolding, place the product at 75℃ for 4 hours for post-curing, finally cut off the flash, process to the final size, and perform appearance, thickness and non-destructive testing.

[0030] Reference Figure 1 Example three A high-strength corrosion-resistant glass steel composite material is provided in this embodiment, which comprises the following raw materials in parts: base 62 parts, reinforcing fiber 23 parts, modifier 2 parts, reinforcing agent 3 parts, curing agent 1 part, defoaming agent 3 parts, leveling agent 1 part, flame retardant 2 parts, ultraviolet absorber 1 part and pigment 2 parts. The specific material of the base is high-performance phenolic epoxy vinyl ester resin, the specific material of the reinforcing fiber is high-strength glass fiber cloth, the specific material of the modifier is silane coupling agent, the specific material of the reinforcing agent is nano silicon dioxide, the specific formula of the curing agent is a mixture of peroxide methyl ethyl ketone and cobalt iso-octoate, the specific material of the pigment is a chemical-resistant pigment paste, the specific material of the defoaming agent is a mixture of non-silicon high molecular polymer, polyacrylate and hydrophobic wax, which is prepared with a specific formula of 3:5:6, the specific material of the leveling agent is a mixture of polyester modified polysiloxane and acrylic ester copolymer, which is prepared with a specific formula of 2:8, the specific material of the flame retardant is a mixture of aluminum hydroxide, magnesium hydroxide and ammonium polyphosphate, which is prepared with a specific formula of 2:3:4, and the specific material of the ultraviolet absorber is a mixture of benzophenone, benzotriazole and triazine derivatives, which is prepared with a specific formula of 6:5:6.

[0031] Further, the flame retardant is formed by the synergistic effect of aluminum hydroxide, magnesium hydroxide and ammonium polyphosphate, forming a high-efficiency heat insulation and flame retardant layer, reducing the fire risk, and the ultraviolet absorber is compounded by benzophenone, benzotriazole and triazine derivatives, comprehensively absorbing ultraviolet radiation of different wavelengths, preventing polymer chain rupture and color change, and these components together enhance the anti-aging ability and safety performance of the material in outdoor and high-temperature environments.

[0032] The application further provides a preparation method of the high-strength corrosion-resistant glass fiber reinforced plastic composite material. S1: pretreatment, first treating the mold, uniformly brushing a release agent on the mold, then coating a release layer, spraying or brushing a layer of corrosion-resistant gel coat compatible with the base resin, the thickness is about 0.5 mm, waiting for the initial gel, then laying the reinforcing fibers, laying the glass fiber cloth with the calculated size on the mold according to the layering sequence and direction, the layering design needs to consider the stress condition of the product, and finally preparing a flow guide system, laying the flow guide net, flow guide pipe and vacuum bag film on the fiber reinforced body, and sealing the vacuum bag well; S2: resin solution preparation, using a stirrer, adding the base, modifier, reinforcing agent and curing agent to the inside of the stirrer, stirring at a speed of 320 rpm for 18 minutes, and finally adding the defoaming agent, leveling agent, flame retardant, ultraviolet absorber and pigment to continue stirring for 13 minutes, to prepare the glass steel solution; S3: vacuum infusion molding, connecting the mixed resin glue tank to the flow guide pipe, opening the vacuum pump to make the vacuum degree in the mold cavity reach-0.95 bar or more, opening the resin valve, using atmospheric pressure to quickly and smoothly absorb the resin glue into the fiber reinforced body and completely soak the fiber reinforced body, observing the resin flow front, and ensuring that all areas are fully soaked without dry spots; S4: curing and post-processing, under the vacuum state, keeping at room temperature (25 DEG C) for 3 hours to make it preliminarily cured, then post-curing, after demolding, placing the product at 75 DEG C for post-curing for 6 hours, finally cutting off the flash, processing to the final size, and performing appearance, thickness and non-destructive testing.

[0033] Reference Figure 1 Example Four The high-strength corrosion-resistant glass steel composite material in the embodiment comprises the following raw materials in parts: a matrix 70 parts, reinforcing fibers 20 parts, a modifier 1 part, a reinforcing body 2 parts, a curing agent 1 part, a defoaming agent 1 part, a leveling agent 2 parts, a flame retardant 1 part, an ultraviolet light absorber 1 part and pigments 1 part, the specific material of the matrix is high-performance phenolic epoxy vinyl ester resin, the specific material of the reinforcing fibers is high-strength glass fiber cloth, the specific material of the modifier is a silane coupling agent, the specific material of the reinforcing body is nano silicon dioxide, the specific formula of the curing agent is a mixture of methyl ethyl ketone peroxide and cobalt isooctanoate, the specific material of the pigments is a chemical resistance pigment paste, the specific material of the defoaming agent is a mixture of a non-silicon high polymer, polyacrylate and a hydrophobic wax, the specific formula thereof is 7:9:8, the specific material of the leveling agent is a mixture of a polyester modified polysiloxane and an acrylic ester copolymer, the specific formula thereof is 3:8, the specific material of the flame retardant is a mixture of aluminum hydroxide, magnesium hydroxide and ammonium polyphosphate, the specific formula thereof is 3:6:2, and the specific material of the ultraviolet light absorber is a mixture of benzophenone, benzotriazole and triazine derivatives, the specific formula thereof is 8:6:7.

[0034] Further, the flame retardant is formed by the synergistic effect of aluminum hydroxide, magnesium hydroxide and ammonium polyphosphate, and forms a high-efficiency heat insulation and flame retardant layer, thereby reducing the fire risk, the ultraviolet light absorber is compounded by benzophenone, benzotriazole and triazine derivatives, and comprehensively absorbs ultraviolet radiation of different wavelengths, thereby preventing the polymer chain from being broken and the color from being changed, and these components jointly enhance the anti-aging ability and safety performance of the material in outdoor and high-temperature environments.

[0035] The application further provides a preparation method of the high-strength corrosion-resistant glass steel composite material. S1: pretreatment, first, the mold is treated, the mold is uniformly coated with a release agent, then a corrosion-resistant gel coat compatible with the matrix resin is coated, sprayed or brushed, the thickness is about 0.6 mm, and then it is initially gelled, then the reinforcing fibers are laid, the glass fiber cloth with the calculated size is designed to be laid in the sequence and direction on the mold, the laying design needs to consider the stress condition of the product, and finally, a flow guide system is prepared, the flow guide net, flow guide pipe and vacuum bag film are laid on the fiber reinforcing body, and the vacuum bag is sealed well; S2: preparation of a resin solution, a stirrer is selected, the matrix, the modifier, the reinforcing body and the curing agent are added to the inside of the stirrer, stirring is performed at a speed of 280 rpm for 18 minutes, and finally, the defoaming agent, the leveling agent, the flame retardant, the ultraviolet light absorber and the pigments are continuously stirred for 13 minutes to prepare a glass steel solution; S3: vacuum infusion molding, connecting the mixed resin glue tank to the flow guide pipe, opening the vacuum pump to make the vacuum degree in the mold cavity reach-0.95 bar or more, opening the resin valve, using atmospheric pressure to quickly and smoothly suck the resin glue into the fiber reinforced body and completely soak it, observing the resin flow front, ensuring that all areas are fully soaked, and there is no dry spot; S4: curing and post-processing, under vacuum, keeping at room temperature (25℃) for 5 hours for preliminary curing, then post-curing, after demolding, placing the product at 75℃ for 6 hours for post-curing, finally cutting off the flash, processing to the final size, and performing appearance, thickness and non-destructive testing.

[0036] Reference Figure 1 Example Five The high-strength corrosion-resistant glass steel composite material in the embodiment comprises the following raw materials in parts: a matrix 65 parts, a reinforcing fiber 22 parts, a modifier 2 parts, a reinforcing body 2 parts, a curing agent 1 part, a defoaming agent 1 part, a leveling agent 2 parts, a flame retardant 3 parts, an ultraviolet absorber 1 part and a pigment 1 part. The specific material of the matrix is high-performance phenolic epoxy vinyl ester resin, the specific material of the reinforcing fiber is high-strength glass fiber cloth, the specific material of the modifier is silane coupling agent, the specific material of the reinforcing body is nano silicon dioxide, the specific formula of the curing agent is a mixture of methyl ethyl ketone peroxide and cobalt iso-octoate, the specific material of the pigment is a chemical-resistant pigment paste, the specific material of the defoaming agent is a mixture of non-silicon high molecular polymer, polyacrylate and hydrophobic wax, and the specific formula thereof is 6:5:2, the specific material of the leveling agent is a mixture of polyester modified polysiloxane and acrylic ester copolymer, and the specific formula thereof is 3:7, the specific material of the flame retardant is a mixture of aluminum hydroxide, magnesium hydroxide and ammonium polyphosphate, and the specific formula thereof is 3:5:4, and the specific material of the ultraviolet absorber is a mixture of benzophenone, benzotriazole and triazine derivatives, and the specific formula thereof is 3:2:7.

[0037] Further, the flame retardant is synergistically formed by aluminum hydroxide, magnesium hydroxide and ammonium polyphosphate to form a high-efficiency heat-insulating flame-retardant layer, thereby reducing the fire risk, and the ultraviolet absorber is compounded by benzophenone, benzotriazole and triazine derivatives to comprehensively absorb ultraviolet radiation of different wavelengths, thereby preventing polymer chain rupture and color change, and these components jointly enhance the anti-aging ability and safety performance of the material in outdoor and high-temperature environments.

[0038] The application further provides a preparation method of the high-strength corrosion-resistant glass steel composite material. S1: pretreatment, first, the mold is treated, evenly brushing the mold with a release agent, then coating the release layer, spraying or brushing a layer of corrosion-resistant gel coat compatible with the base resin, the thickness is about 0.6mm, waiting for the initial gel, then laying the reinforcing fiber, the glass fiber cloth of the calculated size is designed to lay the layer sequence and direction on the mold, the layer design needs to consider the stress condition of the product, finally, the flow guide system is prepared, the flow guide net, flow guide pipe and vacuum bag film are laid on the fiber reinforced body, and the vacuum bag is sealed well; S2: resin solution preparation, select a blender, add the matrix, modifier, reinforcing agent and curing agent to the inside of the blender, stir at a speed of 300rpm for 13 minutes, finally add the defoaming agent, leveling agent, flame retardant, ultraviolet absorber and pigment and continue to stir for 13 minutes, prepare the glass steel solution; S3: vacuum infusion molding, connect the mixed resin glue tank to the flow guide pipe, open the vacuum pump to make the vacuum degree in the mold cavity reach-0.95bar or more, open the resin valve, use atmospheric pressure to quickly and smoothly absorb the resin glue into the fiber reinforced body, observe the resin flow front, ensure that all areas are fully infiltrated without dry spots; S4: curing and post-processing, under vacuum, keep it at room temperature (25℃) for 6 hours for preliminary curing, then post-cure, after demolding, place the product at 78℃ for 3 hours for post-curing, finally, cut off the flash, process to the final size, and perform appearance, thickness and non-destructive testing.

[0039] Compared with the conventional glass steel composite material and the glass steel composite material prepared in examples one to five, the glass steel composite material prepared in examples one to five is as follows:

[0040] From the above table, it can be seen that the high-strength corrosion-resistant glass steel composite material and the preparation method thereof provided by the application have obvious improvement, and example one is the best embodiment.

[0041] The above is only the preferred specific embodiment of the application, but the protection scope of the application is not limited to this, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the application within the technical range disclosed by the application, which should be covered in the protection scope of the application.

Claims

1. A high-strength, corrosion-resistant fiberglass composite material, characterized in that, It includes the following raw materials in parts: 60-100 parts matrix, 20-50 parts reinforcing fiber, 1-5 parts modifier, 1-5 parts reinforcement, 1-5 parts curing agent, 1-5 parts defoamer, 1-5 parts leveling agent, 1-5 parts flame retardant, 1-5 parts ultraviolet absorber, and 1-5 parts pigment.

2. The high-strength corrosion-resistant fiberglass composite material according to claim 1, characterized in that, The matrix is ​​made of high-performance phenolic epoxy vinyl ester resin, the reinforcing fiber is made of high-strength glass fiber cloth, the modifier is made of silane coupling agent, the reinforcing agent is made of nano-silica, the curing agent is made of a mixture of methyl ethyl ketone peroxide and cobalt isooctanoate, and the pigment is made of chemically resistant pigment paste.

3. The high-strength corrosion-resistant fiberglass composite material according to claim 1, characterized in that, The defoamer is made from a mixture of non-silicone polymer, polyacrylate and hydrophobic wax, with a specific formulation of 2-7:4-9:1-8. The leveling agent is made from a mixture of polyester-modified polysiloxane and acrylate copolymer, with a specific formulation of 1-3:1-8.

4. The high-strength corrosion-resistant fiberglass composite material according to claim 1, characterized in that, The flame retardant is prepared by mixing aluminum hydroxide, magnesium hydroxide and ammonium polyphosphate, with a specific formula of 1-5:1-7:2-7. The ultraviolet absorber is prepared by mixing benzophenone, benzotriazole and triazine derivatives, with a specific formula of 1-8:2-6:4-7.

5. A method for preparing a high-strength, corrosion-resistant fiberglass composite material, characterized in that, Includes the following steps: S1: Preprocessing; S2: Preparation of resin solution; S3: Vacuum induction molding; S4: Curing and post-treatment.

6. The method for preparing a high-strength corrosion-resistant fiberglass composite material according to claim 5, characterized in that, In step S1, the mold is first treated by uniformly applying a release agent, then applying a release layer, and finally spraying or brushing a corrosion-resistant gel coat compatible with the base resin, with a thickness of about 0.4-0.6 mm. After initial gelation, the reinforcing fibers are laid out. The glass fiber cloth of calculated size is laid out on the mold according to the designed lay-up sequence and direction. The lay-up design needs to take into account the stress of the product. Finally, the flow guiding system is prepared by laying a flow guiding net, flow guiding tube and vacuum bag film on the fiber reinforcement and sealing the vacuum bag.

7. The method for preparing a high-strength corrosion-resistant fiberglass composite material according to claim 5, characterized in that, In step S2, a mixer is selected, and the matrix, modifier, reinforcing agent and curing agent are added to the inside of the mixer. The mixture is stirred at 250-350 rpm for 10-20 minutes. Finally, defoamer, leveling agent, flame retardant, ultraviolet absorber and pigment are added and the mixture is stirred for another 10-15 minutes to obtain the fiberglass solution.

8. The method for preparing a high-strength corrosion-resistant fiberglass composite material according to claim 5, characterized in that, In step S3, the mixed resin liquid tank is connected to the guide pipe, the vacuum pump is turned on to make the vacuum degree in the mold cavity reach above -0.95 bar, the resin valve is opened, and atmospheric pressure is used to quickly and steadily draw in the resin liquid and completely impregnate the fiber reinforcement. The resin flow front is observed to ensure that all areas are fully wetted and there are no dry spots.

9. The method for preparing a high-strength corrosion-resistant fiberglass composite material according to claim 5, characterized in that, In step S4, the product is kept at room temperature (25°C) for 4-8 hours under vacuum to allow it to initially cure. Then, it is post-cured. After demolding, the product is placed at 70-80°C for 4-8 hours for post-curing. Finally, the flash is removed, the product is processed to the final size, and its appearance, thickness, and non-destructive testing are performed.

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