Flame-retardant composite material processing system with low candlewick effect

Abstract

The utility model relates to the field of composite material processing systems, and discloses a flame-retardant composite material processing system with low candlewick effect, which comprises a glass fiber amination modification unit, a DOPO-PH treatment unit, a pultrusion unit and a cutting unit which are sequentially arranged, the glass fiber amination modification unit comprises an amination modification pool, and the DOPO-PH treatment unit comprises a DOPO-PH pool. According to the utility model, amination modification and flame-retardant modification of glass fibers can be realized through the system, so that the flame retardance and mechanical property of a glass fiber composite material are ensured, and the problem of candlewick effect of the composite material is avoided or reduced.

Description

Technical Field

[0001] The utility model relates to the field of composite material processing systems, and particularly relates to a flame-retardant composite material processing system with low wick effect. Background Technique

[0002] Glass Fiber (GF), as an inorganic non-metallic material, is well-known for its excellent mechanical strength, good heat resistance, chemical resistance and good insulation performance. The superior properties of glass fiber mainly include: 1. High strength: Glass fiber has very high strength, enabling composite materials to exhibit excellent tensile and compressive properties when subjected to external loads. 2. Light weight: Compared with metal materials, glass fiber has a lower density and is light in weight, which can significantly reduce the weight of the structure. 3. Corrosion resistance: Glass fiber has strong resistance to corrosive substances such as acids and alkalis, enabling composite materials to be used in harsh environments for a long time without being damaged. 4. Good insulation: Glass fiber has good electrical insulation performance and is suitable for application scenarios that require insulation. 5. Good heat resistance: Glass fiber has good heat resistance and can maintain a stable structure in high-temperature environments, being suitable for high-temperature application occasions. 6. Excellent electromagnetic properties: Glass fiber has good electromagnetic shielding performance and is suitable for application scenarios that require electromagnetic shielding. 7. Flame retardant performance: Glass fiber itself has good flame retardant performance, which can improve the flame retardancy of composite materials to a certain extent. 8. Sound insulation performance: Glass fiber composite materials have good sound insulation effects and can be used to manufacture sound insulation walls, sound insulation boards, etc. These characteristics make glass fiber an ideal choice for polymer reinforcement materials and can significantly improve the mechanical properties of polymer composite materials. Therefore, glass fiber is widely used in many fields such as construction, electronic appliances, transportation, aerospace and national defense, demonstrating its important value in industrial production and daily life.

[0003] In the field of composite materials, in order to increase the mechanical properties of composite materials, glass fiber is usually added to them. However, in the traditional process of adding glass fiber, if the distribution of fibers or particles is uneven, or there are differences in physical properties such as the coefficient of thermal expansion and coefficient of thermal conductivity of the material, it will lead to an uneven distribution of the internal temperature field and heat flow field. This non-uniformity will cause a "wick"-shaped channel to form along the axis direction of the fiber or particle during the process of heat transfer from the high-temperature region to the low-temperature region, which is called the "wick effect", and this will further increase the fire hazard of the composite material. Therefore, it is of great significance in the industry to develop a new type of glass fiber that can inhibit the "wick effect" and specifically form a supporting processing system. Content of the Utility Model

[0004] The utility model aims to provide a flame retardant composite material processing system with low candle wick effect, so as to ensure the mechanical property and flame retardant property of processed glass fiber.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a flame-retardant composite material processing system with low wick effect, comprising a glass fiber amination modification unit, a DOPO-PH treatment unit, a pultrusion unit and a cutting unit arranged in sequence, the glass fiber amination modification unit comprising an amination modification pool, and the DOPO-PH treatment unit comprising a DOPO-PH pool.

[0006] The principles and advantages of this solution are: in actual application, in this technical solution, in order to solve the problem that the flame retardancy, production efficiency and mechanical properties of the composite materials cannot be taken into account at the same time due to the "wick effect" existing in the prior art when glass fibers are used in composite materials, the inventors perform surface modification on the glass fibers, and perform amino modification and flame retardant modification on the glass fibers in sequence. In the flame retardant modification stage, amino-containing phenol (DOPO-PH) is firstly applied to the modification of the glass fibers. DOPO-PH can self-crosslink into carbon at a relatively low temperature and pyrolyze small molecules of polymer materials at high temperature to crosslink into a carbon layer with high thermal stability, so that the glass fiber material modified by this technical solution has a good "wick effect" suppression effect, and can further reduce the amount of flame retardant used in the material and maintain the mechanical properties of the composite material. At the same time, the inventors have specifically developed a processing system for flame-retardant modified glass fibers. The glass fibers are aminated by a glass fiber amination modification unit, and then flame-retardantly modified by a DOPO-PH treatment unit. Finally, the modified glass fibers are mixed with resin materials in a pultrusion unit and finally cut to obtain flame-retardant modified composite materials.

[0007] Preferably, as an improvement, the glass fiber amination modification unit comprises a first tensioning wheel, a first yarn separation plate, a second yarn separation plate, a first reflow tank and a first oven which are arranged in sequence, and the amination modification tank is arranged between the first yarn separation plate and the second yarn separation plate.

[0008] In the technical solution, the tensioning wheel and the yarn separation plate are used to ensure sufficient contact between the glass fiber and the amino coupling agent, thereby ensuring the amino modification effect of the glass fiber. After the modification is completed, the first oven is used for drying, and the reflux tank can realize the recovery of the dripping amino coupling agent to avoid waste.

[0009] Preferably, as an improvement, the feed end of the glass fiber amination modification unit is further provided with a creel, on which a plurality of yarn balls are mounted.

[0010] In the technical solution, the yarn rack is used to support and place the yarn balls, so that multiple yarn balls can be processed simultaneously, which can improve the processing efficiency.

[0011] Preferably, as an improvement, the DOPO-PH processing unit comprises a second tensioning wheel, a third yarn dividing plate, a fourth yarn dividing plate, a second reflux tank and a second oven which are arranged in sequence, and the DOPO-PH pool is arranged between the third yarn dividing plate and the fourth yarn dividing plate.

[0012] In this technical solution, the tensioning wheel and the yarn separation plate can ensure the full contact between the glass fiber and the flame retardant, thereby ensuring the flame retardant modification effect of the glass fiber. After the modification is completed, the second oven is used for drying, and the reflux tank can recover the dripping flame retardant solution to avoid waste.

[0013] Preferably, as an improvement, the pultrusion unit comprises a third tensioning wheel, an epoxy resin pool, a fifth yarn dividing plate, a third reflow groove and a forming mold which are arranged in sequence, and a dipping rod is arranged in the epoxy resin pool.

[0014] In the technical solution, the molding die is used for mixing and molding the modified glass fiber and the resin solution, and the resin dripping during the process can be recovered along the third reflux groove to avoid waste.

[0015] Preferably, as an improvement, a plurality of dipping rods are provided.

[0016] In the technical solution, by providing a plurality of dipping rods, it is possible to ensure that the glass fiber is in full contact with the resin, thereby ensuring that the composite material system is uniform.

[0017] Preferably, as an improvement, a first traction device is provided at the discharge end of the forming mold, and a mold heating device for heating the forming mold is provided between the first traction device and the forming mold.

[0018] In the technical solution, the mold heating device is used to heat and solidify the composite material, and then the traction device is used to traction the composite material out of the material, thereby ensuring the efficiency of the processing system.

[0019] Preferably, as an improvement, the end of the first traction device away from the mold heating device is connected to the second traction device, and the cutting unit is arranged at the discharge end of the second traction device.

[0020] In this technical solution, the composite material can be pulled to the cutting unit for cutting by using the second pulling device, and the structural arrangement is reasonable.

[0021] Preferably, as an improvement, the cutting unit is a cutting machine.

[0022] In this technical solution, by setting the cutting unit as a cutting machine, the structure is simple and the operation is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of a flame retardant composite material processing system with low wick effect in an embodiment of the utility model. Specific embodiments

[0024] The following is a further detailed description through specific embodiments. However, the embodiments of the present utility model are not limited thereto. Unless otherwise specified, the technical means used in the following embodiments are conventional means well-known to those skilled in the art; the experimental methods used are all conventional methods; the materials, reagents, etc. used can all be obtained from commercial channels.

[0025] The reference numerals in the accompanying drawings of the specification include: yarn frame 1, yarn bobbin 2, first tensioning wheel 3, first yarn splitting plate 4, amination modification tank 5, second yarn splitting plate 6, first reflux tank 7, first oven 8, second tensioning wheel 9, third yarn splitting plate 10, DOPO-PH tank 11, fourth yarn splitting plate 12, second reflux tank 13, second oven 14, third tensioning wheel 15, epoxy resin tank 16, sizing rod 17, fifth yarn splitting plate 18, third reflux tank 19, forming die 20, die heating device 21, first traction device 22, second traction device 23, cutting machine 24.

[0026] The embodiment is basically as shown in the appended Figure 1 drawing: A processing system for a flame-retardant composite material with low wick effect, including a glass fiber amination modification unit, a DOPO-PH treatment unit, a pultrusion unit, and a cutting unit.

[0027] The glass fiber amination modification unit is used to perform amination modification on glass fibers, and includes a first tensioning wheel 3, a first yarn splitting plate 4, an amination modification tank 5, a second yarn splitting plate 6, a first reflux tank 7, and a first oven 8 arranged in sequence. The amination modification tank 5 is filled with an amination modification solution (amino coupling agent KH550). A yarn frame 1 is fixed at the feeding end of the amination modification unit, and a plurality of yarn bobbins 2 are placed on the yarn frame 1, so that multiple yarn bobbins 2 can be processed simultaneously, which can ensure the operation efficiency of the system.

[0028] The DOPO-PH treatment unit includes a second tensioning wheel 9, a third yarn splitting plate 10, a DOPO-PH tank 11, a fourth yarn splitting plate 12, a second reflux tank 13, and a second oven 14 arranged in sequence. The DOPO-PH tank 11 is filled with a DOPO-PH mixed solution.

[0029] The pultrusion unit includes a third tensioning wheel 15, an epoxy resin tank 16, impregnating rods 17, a fifth yarn splitting plate 18, a third return chute 19, and a forming die 20 arranged in sequence. A first traction device 22 is provided at the discharge end of the forming die 20, and a die heating device 21 for heating the forming die 20 is arranged between the first traction device 22 and the forming die 20. A second traction device 23 is arranged on the right side of the first traction device 22, and the cutting unit is arranged on the right side of the second traction device 23. A plurality of impregnating rods 17 are provided, and all the plurality of impregnating rods 17 are arranged in the epoxy resin tank 16 for sufficient contact between the glass fiber and the epoxy resin.

[0030] The cutting unit is a cutting machine 24.

[0031] When processing the flame-retardant epoxy resin composite material by using the above processing system, first, the amination modification solution and the DOPO-PH mixed solution are respectively fed into the amination modification tank 5 and the DOPO-PH tank 11. Then, the glass fiber fixed on the yarn rack 1 respectively passes through the first tensioning wheel 3 and the first yarn splitting plate 4 and is immersed in the amination modification solution for amination modification, and then is dried by the first oven 8.

[0032] The dried glass fiber continues to be tractioned, undergoes flame-retardant modification through the DOPO-PH mixed solution and continues to be dried by the second oven 14. The flame-retardant modified glass fiber is mixed with the resin material in the epoxy resin tank 16 to form a mixed system. The mixed system enters the forming die 20, and after being heated and cured by the die heating device 21, a low "wick effect" flame-retardant composite material profile is obtained. The low "wick effect" flame-retardant composite material profile is tractioned by the first and second traction devices 23 and enters the cutting unit, and is cut to a fixed length by the cutting machine 24.

[0033] The above are only the embodiments of the present invention, and the specific technical solutions and / or common knowledge such as characteristics known in the solutions are not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the present invention, several deformations and improvements can still be made, and these should also be regarded as the protection scope of the present invention, and these will not affect the implementation effect of the present invention and the practicality of the patent. The protection scope required by this application should be subject to the content of its claims, and the specific implementation manners described in the specification can be used to explain the content of the claims.

Claims

1. A processing system for a flame-retardant composite material with a low wick effect, characterized in that: It includes a glass fiber amination modification unit, a DOPO-PH treatment unit, a pultrusion unit and a cutting unit arranged in sequence. The glass fiber amination modification unit includes an amination modification tank, and the DOPO-PH treatment unit includes a DOPO-PH tank.

2. The processing system for a flame-retardant composite material with a low wick effect according to claim 1, characterized in that: The glass fiber amination modification unit includes a first tensioning wheel, a first yarn splitting plate, a second yarn splitting plate, a first return trough and a first oven arranged in sequence. The amination modification tank is arranged between the first yarn splitting plate and the second yarn splitting plate.

3. A processing system for a flame-retardant composite material with a low wick effect according to claim 2, characterized in that: A yarn rack is further arranged at the feeding end of the glass fiber amination modification unit, and a plurality of yarn bobbins are installed on the yarn rack.

4. A processing system for a flame-retardant composite material with a low wick effect according to claim 3, characterized in that: The DOPO-PH treatment unit includes a second tensioning wheel, a third yarn splitting plate, a fourth yarn splitting plate, a second return trough and a second oven arranged in sequence. The DOPO-PH tank is arranged between the third yarn splitting plate and the fourth yarn splitting plate.

5. A processing system for a flame-retardant composite material with a low wick effect according to claim 4, characterized in that: The pultrusion unit includes a third tensioning wheel, an epoxy resin tank, a fifth yarn splitting plate, a third return trough and a forming die arranged in sequence. Dipping rods are arranged in the epoxy resin tank.

6. A processing system for a flame-retardant composite material with a low wick effect according to claim 5, characterized in that: A plurality of the dipping rods are provided.

7. A processing system for a flame retardant composite material with a low wick effect according to claim 6, characterized in that: A first traction device is arranged at the discharging end of the forming die, and a die heating device for heating the forming die is arranged between the first traction device and the forming die.

8. A processing system for a flame-retardant composite material with a low wick effect according to claim 7, characterized in that: One end of the first traction device far away from the die heating device is connected to a second traction device, and the cutting unit is arranged at the discharging end of the second traction device.

9. A processing system for a flame-retardant composite material with a low wick effect according to claim 8, characterized in that: The cutting unit is a cutting machine.

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