Efficient heating curing and weather-proof treatment method for glass fiber mesh cloth

Abstract

The invention discloses an efficient heating curing and weather-proof treatment method for glass fiber mesh cloth. The efficient heating curing and weather-proof treatment method for the glass fiber mesh cloth comprises the following specific steps: step 1, pretreatment; step 2, dipping treatment; step 3, preliminary drying; fourthly, efficient heating and curing are conducted; according to the efficient heating curing and weather-resistant treatment method for the glass fiber mesh cloth, a multi-section temperature gradient curing device is adopted, resin molecules are gradually cross-linked in different stages, meanwhile, modified phenolic resin and a cross-linking agent are added, and the chemical binding force between fibers and a coating is enhanced; the surface activity of the fibers is improved through a plasma surface treatment technology, and the ultraviolet resistance and the aging resistance of the screen cloth are enhanced by adopting the nano coating containing silicon oxide, aluminum oxide and titanium oxide; a multi-section temperature gradient heating and curing process is adopted, so that heating, crosslinking and curing are synchronously carried out, and the treatment time is greatly shortened.

Description

Technical Field

[0001] The invention discloses a high-efficiency heating, curing and weathering treatment method for a glass fiber mesh, belonging to the technical field of glass fiber processing. Background Art

[0002] As a high-performance reinforcement material, fiberglass mesh is widely used in building reinforcement, industrial protection and other fields. However, existing fiberglass mesh generally has the following defects in actual use: (1) Uneven surface treatment process results in poor resin impregnation and incomplete curing; (2) Insufficient weather resistance, prone to aging under long-term ultraviolet radiation or harsh environment; (3) The production process has high energy consumption and low efficiency, which makes it difficult to meet the needs of large-scale industrial production.

[0003] Therefore, it is urgent to develop an innovative glass fiber mesh processing method to solve the above technical problems. Summary of the Invention

[0004] The object of the present invention is to provide a method for efficiently heating, curing and weathering treatment of glass fiber mesh cloth, so as to achieve the goals of uniform surface treatment, thorough curing, enhanced weather resistance and efficient production.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a method for efficiently heating, curing and weathering a glass fiber mesh, wherein the specific steps of the method are as follows: Step 1: Pretreatment: Cut the fiberglass mesh according to the required size and clean the surface. Use high-pressure water or ultrasonic cleaning to remove dust, impurities and oil on the surface. After cleaning, place the fiberglass mesh in a ventilated area to dry naturally or use a low-temperature blower to dry it. Step 2: Impregnation treatment: soak the dried glass fiber mesh in a weather-resistant modified resin solution. The main components of the resin solution include 50% to 70% modified phenolic resin, 20% to 30% cross-linking agent, 5% to 10% weathering agent and 5% additional additives. The soaking time is controlled at 5 to 10 minutes. After soaking, the mesh surface is squeezed with a roller to remove excess solution. Step 3: Preliminary drying: Place the impregnated glass fiber mesh into a preliminary drying chamber. The temperature of the drying chamber is set at 80-100°C and the drying time is controlled at 15-20 minutes to remove excess solvent. Step 4: Efficient heating and curing: The preliminarily dried glass fiber mesh is sent to a multi-stage heating and curing device. The temperature gradient is set in sections: the first section temperature is 150-170°C, the second section temperature is 200-220°C, and the third section temperature is 240-260°C. The heating time of each section is controlled at 5-10 minutes. The hot air circulation system is used to achieve uniform heating to ensure that the resin in the glass fiber mesh is completely cured. Step 5: Weathering treatment: The cured glass fiber mesh is sent to the weathering enhancement treatment device, and plasma surface treatment technology is combined with nano-coating spraying process. The plasma treatment power is 200-300W and the treatment time is 2-5 minutes. Then a layer of weather-resistant nano-coating is sprayed, and the coating thickness is controlled at 10-20μm.

[0006] As a preferred technical solution of the present invention, the pH value of the weather-resistant modified resin solution is controlled between 6.8 and 7.2.

[0007] As a preferred technical solution of the present invention, the humidity of the drying chamber is controlled between 20% and 30% to ensure that the surface of the mesh is evenly dried.

[0008] As a preferred technical solution of the present invention, the conveying speed of each section in the heating and curing device is controlled at 3 to 5 meters per minute.

[0009] As a preferred technical solution of the present invention, the weathering agent is a mixture of an ultraviolet absorber and an antioxidant in a ratio of 2:1.

[0010] As a preferred technical solution of the present invention, during the plasma surface treatment process, the treatment gas is a mixed gas of argon and oxygen with a mixing ratio of 1:1.

[0011] As a preferred technical solution of the present invention, the sprayed nano-coating material mainly includes silicon oxide, aluminum oxide and titanium oxide, and the mass ratio thereof is 4:3:1.

[0012] Compared with existing technologies, the present invention offers the following advantages: It utilizes a multi-stage temperature gradient curing device to gradually crosslink the resin molecules at different stages, while simultaneously adding a modified phenolic resin and a crosslinking agent to enhance the chemical bond between the fiber and the coating. It also utilizes plasma surface treatment technology to increase fiber surface activity, and employs a nano-coating containing silicon oxide, aluminum oxide, and titanium oxide to enhance the mesh's UV resistance and aging resistance. Furthermore, a multi-stage temperature gradient heating and curing process allows for simultaneous heating, crosslinking, and curing, significantly reducing processing time. Furthermore, improvements to the resin formulation and coating application process have resulted in increased batch production. DETAILED DESCRIPTION

[0013] The technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0014] The present invention provides a method for efficiently heating, curing and weathering a glass fiber mesh. The specific steps of the method for efficiently heating, curing and weathering a glass fiber mesh are as follows: Step 1: Pretreatment: Cut the fiberglass mesh according to the required size and clean the surface. Use high-pressure water or ultrasonic cleaning to remove dust, impurities and oil on the surface. After cleaning, place the fiberglass mesh in a ventilated area to dry naturally or use a low-temperature blower to dry it. Step 2: Impregnation treatment: soak the dried glass fiber mesh in a weather-resistant modified resin solution. The main components of the resin solution include 50% to 70% modified phenolic resin, 20% to 30% cross-linking agent, 5% to 10% weathering agent and 5% additional additives. The soaking time is controlled at 5 to 10 minutes. After soaking, the mesh surface is squeezed with a roller to remove excess solution. Step 3: Preliminary drying: Place the impregnated glass fiber mesh into a preliminary drying chamber. The temperature of the drying chamber is set at 80-100°C and the drying time is controlled at 15-20 minutes to remove excess solvent. Step 4: Efficient heating and curing: The preliminarily dried glass fiber mesh is sent to a multi-stage heating and curing device. The temperature gradient is set in sections: the first section temperature is 150-170°C, the second section temperature is 200-220°C, and the third section temperature is 240-260°C. The heating time of each section is controlled at 5-10 minutes. The hot air circulation system is used to achieve uniform heating to ensure that the resin in the glass fiber mesh is completely cured. Step 5: Weathering treatment: The cured glass fiber mesh is sent to the weathering enhancement treatment device, and plasma surface treatment technology is combined with nano-coating spraying process. The plasma treatment power is 200-300W and the treatment time is 2-5 minutes. Then a layer of weather-resistant nano-coating is sprayed, and the coating thickness is controlled at 10-20μm.

[0015] Wherein, the pH value of the weather-resistant modified resin solution is controlled between 6.8 and 7.2.

[0016] Furthermore, the humidity of the drying chamber is controlled between 20% and 30% to ensure that the surface of the mesh is evenly dried.

[0017] Furthermore, the conveying speed of each section in the heating and curing device is controlled at 3 to 5 meters per minute.

[0018] Preferably, the weathering agent is a mixture of an ultraviolet absorber and an antioxidant in a ratio of 2:1.

[0019] Wherein, during the plasma surface treatment process, the treatment gas is a mixed gas of argon and oxygen, and the mixing ratio is 1:1.

[0020] In the present invention, the sprayed nano-coating material mainly comprises silicon oxide, aluminum oxide and titanium oxide, and the mass ratio thereof is 4:3:1. Example 1

[0021] The method of the present invention: Modified resin solution ratio: modified phenolic resin 60%, cross-linking agent 25%, weathering agent 8%, auxiliary agent 7%; Drying chamber temperature: 90°C, humidity 25%; Curing device temperature gradient: first section 160℃, second section 210℃, third section 250℃; Weather-resistant coating material ratio: silicon oxide 40%, aluminum oxide 30%, titanium oxide 10%.

[0022] Normal method: Resin solution ratio: ordinary phenolic resin 90%, additive 10%; Single temperature drying: fixed at 150°C, no temperature gradient; No weather-resistant coating.

[0023]

[0024] Example 2: Different weather-resistant coating ratios The method of the present invention: Weather-resistant coating material ratio: silicon oxide 50%, aluminum oxide 40%, titanium oxide 10%; Plasma surface treatment power: 300 W, time: 5 minutes.

[0025] Normal method:

[0026] There is no weather-resistant coating, and it is cured only by ordinary drying at a fixed temperature of 180°C.

[0027] Example 3: Different curing temperature gradients The method of the present invention: Curing device temperature gradient: first section 170℃, second section 220℃, third section 260℃; Resin solution ratio: modified phenolic resin 65%, cross-linking agent 25%, weathering agent 10%.

[0028] Normal method: The curing temperature is fixed at 200°C with no temperature gradient; The resin solution has the same proportions, but does not contain cross-linking agent and weathering agent.

[0029]

[0030] Result analysis: 1. Peel strength: The weather-resistant modified resin solution and multi-stage temperature gradient curing process in the method of the present invention significantly improve the bonding strength between the resin and the glass fiber, and the peel strength is increased by more than 50% compared with conventional methods.

[0031] 2. Weather resistance: The plasma treatment and weather-resistant nano coating adopted by the present invention significantly enhance the anti-ultraviolet and anti-aging capabilities of the glass fiber mesh, and the weather resistance is improved to more than 500 hours, which is 2 to 3 times that of the common method.

[0032] 3.Production efficiency: By optimizing the drying and curing processes, especially the multi-stage temperature gradient curing method, the present invention significantly increases the processing area per hour and is suitable for large-scale industrial production.

[0033] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A method for efficiently heating, curing and weathering treatment of glass fiber mesh, characterized in that: The specific steps of the glass fiber mesh efficient heating curing and weathering treatment method are as follows: Step 1: Pretreatment: Cut the fiberglass mesh according to the size requirements and clean the surface. Use high-pressure water or ultrasonic cleaning to remove dust, impurities and oil on the surface. After cleaning, place the fiberglass mesh in a ventilated area to dry naturally or use a low-temperature blower to dry it. Step 2: Impregnation treatment, immersing the dried glass fiber mesh in a weather-resistant modified resin solution, wherein the main components of the resin solution include 50% to 70% of modified phenolic resin, 20% to 30% of a cross-linking agent, 5% to 10% of a weathering agent, and 5% of an additional auxiliary agent. The immersion time is controlled within 5 to 10 minutes. After immersion, the surface of the mesh is squeezed with a roller to remove excess solution. Step 3: Preliminary drying: put the impregnated glass fiber mesh into a preliminary drying chamber, set the temperature of the drying chamber to 80-100°C, and control the drying time to 15-20 minutes to remove excess solvent; Step 4: Efficient heating and curing. The glass fiber mesh after preliminary drying is sent to a multi-stage heating and curing device. The temperature gradient is set in sections: the temperature of the first section is 150-170°C, the temperature of the second section is 200-220°C, and the temperature of the third section is 240-260°C. The heating time of each section is controlled at 5-10 minutes. The hot air circulation system is used to achieve uniform heating to ensure that the resin in the glass fiber mesh is completely cured. Step 5: Weathering treatment: send the cured glass fiber mesh into the weathering enhancement treatment device, and use plasma surface treatment technology combined with nano-coating spraying process. The plasma treatment power is 200-300W, and the treatment time is 2-5 minutes. Then, a layer of weather-resistant nano-coating is sprayed, and the coating thickness is controlled at 10-20μm.

2. A method for efficiently heating, curing and weathering treatment of glass fiber mesh according to claim 1, characterized in that: The pH value of the weather-resistant modified resin solution is controlled between 6.8 and 7.

2.

3. A method for efficiently heating, curing and weathering treatment of glass fiber mesh according to claim 1, characterized in that: The humidity in the drying chamber is controlled between 20% and 30% to ensure that the surface of the mesh is evenly dried.

4. A method for efficiently heating, curing and weathering treatment of glass fiber mesh according to claim 1, characterized in that: The conveying speed of each section in the heating and curing device is controlled at 3 to 5 m / min.

5. The method for efficient heating, curing and weathering treatment of glass fiber mesh according to claim 1, characterized in that: The weathering agent is a mixture of an ultraviolet absorber and an antioxidant in a ratio of 2:

1.

6. A method for efficiently heating, curing and weathering treatment of glass fiber mesh according to claim 1, characterized in that: During the plasma surface treatment process, the treatment gas is a mixed gas of argon and oxygen, and the mixing ratio is 1:

1.

7. The method for efficient heating, curing and weathering treatment of glass fiber mesh according to claim 1, characterized in that: The sprayed nano-coating material mainly includes silicon oxide, aluminum oxide and titanium oxide, and the mass ratio thereof is 4:3:1.

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