A method of strengthening a joint of a carbon fibre material

Abstract

The present application belongs to the technical field of pole body composite materials, and discloses a method for reinforcing and bonding a pole body material by carbon fibers. In the present application, a polyphenyl oxide resin primer is heated and fused on the surface of the pole body, which is a thermoplastic resin material. A curing agent is added to the thermally fused primer on the pole body, and the primer is cooled and solidified. The primer can also undergo a chemical cross-linking reaction with a leveling adhesive. The outer surface of the pole body is easily affected by adverse environments, such as low temperatures, and can be subjected to unexpected loads, such as wear and impact. After the leveling adhesive, which is made of an epoxy resin and a polysulfide rubber, is brushed and coated, the pole body is further coated with a dipping adhesive. The pole body material is thick, heavy and strong, and can withstand the impact of large fish. When fishing, the pole body can better transfer and release force.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of rod body composite materials, and particularly relates to a method for strengthening and connecting a carbon fiber rod body material. BACKGROUND

[0002] A rod body is the most important tool for capturing fish by manpower, and the largest freshwater fish captured by a fishing rod can reach 700 kg. Large rod bodies are mainly used for trolling. Trolling refers to a method for trolling large predatory fish on the sea surface by using a speedboat. It is different from the method for slowly trolling bottom fish in deep sea in ship fishing, and mainly uses a rod body including a support rod and a trolling rod. The trolling rod is a glass steel or carbon fiber extremely hard fishing rod, which is provided with a line passing ring and matched with a large winding device and a support rod base. The support rod is generally provided with 2-4 support rods on each marlin fishing boat, and the height is 3-4 meters. The support rod is divided into two sections, which is convenient for installation and disassembly. A pulley and a wood clamp are installed on the upper part of the rod body, so that a long mother line can be hung on the rod body during trolling, which can prevent the fishing line from being entangled, and can make the large fish see the bait but not see the line. However, when the trolling rod or the support rod is pulled and bent at the end, more force is needed to pull the fish out of the water. However, the hard tuning rod can be broken due to improper use. The technical personnel in the field urgently need to develop a method for strengthening and connecting a carbon fiber rod body material to meet the existing use requirements and performance requirements. SUMMARY

[0003] The application aims at the existing problems, and provides a method for strengthening and connecting a carbon fiber rod body material.

[0004] The method for reinforcing and bonding the pole body material carbon fiber comprises the following steps: first, hot-melting the primer: heating and melting the polyphenyl oxide resin primer on the surface of the pole body with a thickness of 0.2mm-0.3mm, and then naturally cooling to room temperature, and then heating to 105-115℃ and keeping for 2.5-3.5h, wherein the polyphenyl oxide resin primer contains 2%-4% of curing agent, and the pole body with the hot-melting primer is obtained; second, brushing the leveling glue: mixing and preparing the leveling glue according to the mass ratio of 100 parts of epoxy resin, 8-13 parts of polysulfide rubber, 1-2 parts of accelerator, 2-4 parts of polyamide curing agent, 6-8 parts of diamino diphenyl methane oxalate or diamino diphenyl sulfone, brushing the prepared leveling glue on the pole body with the hot-melting primer, and then laying the carbon fiber prepreg on the pole body with the leveling glue, and then leveling with a scraper and eliminating bubbles with a defoaming roller, and then curing at 60-80℃ for 6-8h, and the carbon fiber reinforced pole body is obtained; and third, coating and impregnating the glue: uniformly rolling and brushing the impregnating glue with a thickness of 0.3-0.4mm on the surface of the carbon fiber reinforced pole body, and then eliminating bubbles with a scraper or a defoaming roller, and then uniformly heating with an electric iron at 130-145℃ for 15-20min, and then aging at room temperature for 6-8h, and the pole body after the reinforcing and bonding of the carbon fiber material is obtained.

[0005] The hot-melting primer is mainly used for the surface strength of the pole body, and improves the bonding strength of the pole body, the leveling glue and the carbon fiber prepreg. The brushing of the leveling glue is used for filling the holes and cracks on the surface of the pole body, and makes the reinforcing surface flatness meet the specified requirements, and has reliable bonding strength with the hot-melting primer and the coating and impregnating glue. The coating and impregnating glue is the main bonding material for pasting the carbon fiber, and makes the carbon fiber cloth and the pole body fully bonded, and bears the structure together.

[0006] Further, the carbon fiber prepreg is twill carbon fiber prepreg or plain carbon fiber prepreg, and the area density is 200-240g / m2, and the thickness is 0.26-0.32mm.

[0007] Further, the content of the carbon fiber in the carbon fiber prepreg in the third step accounts for 58%-62% of the weight percentage of the carbon fiber prepreg.

[0008] Further, the curing agent in the first step is one of bisphenol A diether dianhydride or 2,4-toluene diisocyanate.

[0009] Further, the impregnating glue in the third step is prepared by uniformly mixing 100 parts of vinyl ester resin, 2-3 parts of cobalt naphthenate, 12-15 parts of carbon fiber powder and 3-4 parts of methyl ethyl ketone peroxide.

[0010] Further, the epoxy resin in the second step is bisphenol A epoxy resin or phenolic epoxy resin.

[0011] Furthermore, the second-step accelerator is one of boron trifluoride-monoethylamine complex or 2,4,6-tris(dimethylaminomethyl)phenol.

[0012] The beneficial effects of this invention are:

[0013] This invention employs a hot-melt undercoat adhesive: a polyphenolic resin undercoat adhesive, which is a thermoplastic resin material, is heated and melted onto the rod surface. A curing agent is added, and the adhesive is then hot-melted onto the rod and cooled to cure. It can also undergo a chemical cross-linking reaction with the leveling adhesive. The outer surface of the rod is susceptible to harsh environments, such as low temperatures, and can withstand accidental loads such as wear and impact. Furthermore, the leveling adhesive is made by blending 100 parts of epoxy resin and polysulfide rubber, and after brushing, an impregnation adhesive is applied. The rod material is thick, the rod wall is thick, the fishing weight is large, and the backbone is strong, which can ensure that it can withstand the impact of large fish and can better leverage and dissipate force when playing fish. Detailed Implementation

[0014] The present invention is illustrated below with specific embodiments, but these are not intended to limit the scope of the invention. Example 1

[0015] Raw materials and equipment: FiRSTMA giant fishing rod body with a diameter of 30.3mm and a fishing power of 250kg; Jiangtian CER4106 epoxy resin impregnation material; Hangzhou Aike BK-1713 cloth cutting machine and GWFH-150-1790 curing oven; JLY124 polysulfide rubber from Keda Petrochemical; BMTE200-A80 phenolic epoxy resin; Hehai Chemical solvent 2,4,6-tris(dimethylaminomethyl)phenol and Jinzhou Sanfeng bisphenol A type diether dianhydride; Huayang polyamide curing agent GX-8650-1; Haixingrui HXR-B820 and Shuangyue curing agent methyl ethyl ketone peroxide MEKP-Ⅰ; Lutai Chemical Plant RC-D20 methyl ethyl ketone peroxide; CJ-CF300 carbon fiber powder 300 mesh.

[0016] The method for reinforcing and bonding the carbon fiber material fishing rod body comprises the following steps: first, heating and melting the polyphenyl oxide resin primer on the surface of the fishing rod body to a thickness of 0.3 mm, naturally cooling to room temperature, then heating to 115 DEG C and keeping for 2.5 hours, the polyphenyl oxide resin primer containing 2% of the curing agent bisphenol A diether dianhydride, obtaining the fishing rod body with the heated and melted primer; second, brushing the leveling glue: according to the mass ratio, mixing and preparing the leveling glue with 100 parts of epoxy resin, 13 parts of polysulfide rubber, 2 parts of 2, 4, 6-tris (dimethylaminomethyl) phenol accelerator, 4 parts of GX-8650-1 polyamide curing agent and 8 parts of DDS diamino diphenyl sulfone, brushing the prepared leveling glue on the fishing rod body with the heated and melted primer, cutting with the cloth cutting machine, then laying the carbon fiber prepreg evenly on the fishing rod body coated with the leveling glue, leveling with the scraper and eliminating the bubbles with the bubble eliminating roller, then curing at 60 DEG C for 8 hours, obtaining the carbon fiber reinforced fishing rod body, the carbon fiber prepreg being twill carbon fiber prepreg with a surface density of 240 g / m2 and a thickness of 0.32 mm, the content of carbon fiber in the carbon fiber prepreg accounting for 62% of the weight percentage of the carbon fiber prepreg, and the CER4106 epoxy resin impregnated material being the rest; third, coating and impregnating the glue: uniformly rolling and brushing the impregnated glue with a thickness of 0.4 mm on the surface of the carbon fiber reinforced fishing rod body, then eliminating the bubbles with the bubble eliminating roller, the impregnated glue being mixed uniformly by 100 parts of HXR-B820 vinyl ester resin, 3 parts of cobalt naphthenate, 15 parts of carbon fiber powder and 4 parts of Bluerox93 peroxide methyl ethyl ketone, then being heated uniformly with the electric iron at 145 DEG C for 20 minutes, and being aged at room temperature for 8 hours, obtaining the fishing rod body after the carbon fiber material is reinforced and bonded.

[0017] Product: the fishing rod body after the carbon fiber material is reinforced and bonded has no defects such as burrs, cracks, scratches and deformation, the surface of the fishing rod body after the carbon fiber material is reinforced and bonded is smooth, the pattern is clear, the color is uniform, and has no defects such as shrinkage, the bending strength is 53.7 MPa, the compression strength is 72.1 MPa, and the tensile strength is 39.1 MPa. Example 2

[0018] Raw materials and equipment: the fishing rod body of the FiRSTMA giant fishing rod with a diameter of 30.3 mm and a fishing force of 250 kg; Jiangtian CER825 epoxy resin impregnated material; cloth cutting machine Hangzhou Aike BK-1713, curing furnace GWFH-150-1790; Huaheng H6K-CP320 plain weave 70 / 100 mm carbon fiber prepreg; JLY121 polysulfide rubber Keda Petrochemical; bisphenol A epoxy resin E-51; Kenli Huihua Chemical boron trifluoride-monoethylamine complex; Jiading Jiangqiao Chemical ET200E polyamide curing agent; 2960 type vinyl ester resin, 2, 4-toluene diisocyanate T-80; Changhe Bluerox93 peroxide methyl ethyl ketone; Cao Chemical new cobalt naphthenate KO-20, ZL-CF200 carbon fiber powder 200 mesh.

[0019] The method for reinforcing and bonding the carbon fiber material fishing rod body comprises the following steps: first, heating and melting the polyphenyl oxide resin primer on the surface of the fishing rod body to a thickness of 0.2 mm, naturally cooling to room temperature, then heating to 105 DEG C and keeping for 3.5 h, wherein the polyphenyl oxide resin primer contains 4% of the curing agent 2,4-toluene diisocyanate, thereby obtaining the fishing rod body with the heated and melted primer; second, brushing the leveling glue on the fishing rod body with the heated and melted primer, wherein the leveling glue is prepared by mixing epoxy resin 100 parts, polysulfide rubber 8 parts, boron trifluoride-monoethylamine complex promoter 1 part, polyamide curing agent 2 parts, and diamino diphenyl methane oxalate 6 parts according to the mass ratio, and then laying the carbon fiber prepreg on the fishing rod body coated with the leveling glue, leveling with a scraper and eliminating bubbles with a defoaming roller, and then curing at 80 DEG C in a curing oven for 6 h, thereby obtaining the carbon fiber reinforced fishing rod body, wherein the carbon fiber prepreg is plain weave carbon fiber prepreg with a surface density of 240 g / m2 and a thickness of 0.32, the content of carbon fiber in the carbon fiber prepreg accounts for 58% of the weight percentage of the carbon fiber prepreg, and the CER825 epoxy resin impregnated material is the remainder; third, coating and impregnating the glue on the surface of the carbon fiber reinforced fishing rod body to a thickness of 0.3 mm, eliminating bubbles with a scraper, and then obtaining the fishing rod body after the carbon fiber material is reinforced and bonded, wherein the glue is prepared by uniformly mixing vinyl ester resin 100 parts, cobalt naphthenate 2 parts, 12 parts of carbon fiber powder and peroxide methyl ethyl ketone 3 parts according to the weight fraction, uniformly heating at 130 DEG C for 15 min, and aging at room temperature for 6 h.

[0020] Product: The carbon fishing rod is free of burrs, cracks, scratches, deformation and other defects. The surface of the carbon fishing rod is smooth, the pattern is clear, the color is uniform, and there are no shrinkage marks and other defects. The bending strength is 52.5 MPa, the compressive strength is 71.2 MPa, and the tensile strength is 38.4 MPa.

[0021] Note: The tensile strength is tested according to 5.1 in GB / T2567-2021 Resin Casting Performance Test Method, the test speed is 2 mm / min, and the tensile strength is calculated according to 5.1.5.1; the bending strength is tested according to 5.3 in GB / T2567-2008, the test speed is 2 mm / min. The compressive strength is tested according to 5.2 in GB / T25677-2021, the test speed is 2 mm / min.

Claims

1. A method of reinforcing a rod body material with carbon fibers, comprising the steps of conventional cleaning, flattening, repairing and polishing the rod body, characterized in that, Further comprising the following steps: The first step, hot melt primer: the polyphenyl oxide resin primer is heated and melted on the surface of the rod body, with a thickness of 0.2mm-0.3mm, and after natural cooling to room temperature, it is heated to 105℃-115℃ and kept for 2.5h-3.5h, the polyphenyl oxide resin primer contains 2%-4% of a curing agent, and the hot melt primer rod body is obtained; the second step, leveling glue brushing: according to the mass ratio, epoxy resin 100 parts, polysulfide rubber 8-13 parts, accelerator 1-2 parts, polyamide curing agent 2-4 parts, diamino diphenyl methane oxalate or diamino diphenyl sulfone 6-8 parts, the leveling glue is mixed and prepared, the prepared leveling glue is brushed on the hot melt primer rod body, the carbon fiber prepreg is evenly laid on the rod body coated with the leveling glue, and after leveling with a scraper and defoaming with a roller, the bubbles are eliminated, and the carbon fiber reinforced rod body is obtained after curing at 60℃-80℃ for 6h-8h; the third step, coating and impregnating glue: the impregnating glue with a thickness of 0.3mm-0.4mm is evenly brushed on the surface of the carbon fiber reinforced rod body, and after eliminating bubbles with a scraper or a defoaming roller, the carbon fiber material reinforced jointed rod body is obtained after being evenly heated with an electric iron at 130℃-145℃ for 15min-20min and aging at room temperature for 6h-8h.

2. The method of carbon fiber reinforced joining of pole body materials according to claim 1, characterized by, The carbon fiber prepreg is a twill carbon fiber prepreg or a plain carbon fiber prepreg, with a surface density of 200g / m2-240g / m2 and a thickness of 0.236-0.32mm.

3. The method of claim 1, wherein The carbon fiber content in the third step carbon fiber prepreg accounts for 58%-62% of the weight percentage of the carbon fiber prepreg.

4. The method of claim 1, wherein The first step curing agent is one of bisphenol A diether dianhydride or 2,4-toluene diisocyanate.

5. The method of claim 1, wherein The third step impregnating glue is obtained by uniformly mixing 100 parts of vinyl ester resin, 2-3 parts of cobalt naphthenate, 12-15 parts of carbon fiber powder and 3-4 parts of methyl ethyl ketone peroxide by weight.

6. The method of claim 1, wherein The second step epoxy resin is bisphenol A epoxy resin or phenolic epoxy resin.

7. The method of claim 1, wherein the rod material is carbon fiber reinforced composite. The second step accelerator is one of boron trifluoride-monoethylamine complex or 2,4,6-tris(dimethylaminomethyl)phenol.