Glasses leg and preparation method thereof, glasses frame and glasses

Abstract

The invention discloses a glasses leg and a preparation method thereof, a glasses frame and glasses, the glasses leg comprises a plurality of composite carbon fiber layers, the composite carbon fiber layer materials comprise carbon fiber fabrics and thermoplastic adhesive films, and thermoplastic bonding powder layers are arranged between the composite carbon fiber layers. According to the invention, the thermoplastic adhesive film is compounded with the carbon fibers, so that the toughness, impact resistance and friction resistance of the glasses legs are effectively improved, the glasses legs have excellent mechanical properties and extremely high tensile strength and modulus, and meanwhile, the thermoplastic adhesive film is matched with the thermoplastic bonding powder, so that the interface bonding between the adjacent single composite carbon fiber layers is effectively enhanced, and the service life of the glasses legs is prolonged. Therefore, the glasses legs have higher use stability and longer service life.

Description

Technical Field

[0001] The present invention relates to the technical field of glasses, and in particular to a glasses leg and a preparation method thereof, a glasses frame and glasses. Background Art

[0002] Since the 21st century, with the rise of electronic products and the influence of various factors, the myopia rate in my country has shown a clear upward trend. Myopia has become the primary problem of eye health for Chinese people, especially young people. At present, myopia surgery still has certain disadvantages, and most people with myopia still choose to wear glasses. Due to the long-term wearing of glasses, the comfort and durability of the glasses legs are particularly important.

[0003] The materials of glasses legs mainly include metal, plate, ordinary plastic, composite, wood, TR90, carbon fiber, etc. Metal glasses legs are resistant to impact and wear, have good toughness, low friction coefficient, and are easy to replace. The disadvantage is that they are easy to cause skin allergies. Plate is a new type of plastic. Plate glasses legs are strong, firm, of good quality, and durable, but the surface is easily corroded by sweat, resulting in aging and whitening. Ordinary plastic glasses legs are cheap, fast to produce, and have a variety of styles and colors, but the structure is poor in resistance, easy to age and break. Composite glasses legs are stable and reliable, but the production is complex, the processing is difficult, and the cost is high. Wooden glasses legs are light in weight and have beautiful patterns, but they are not comfortable to wear. The wood has poor flexibility and is easy to wear, corrode, and break. TR90 glasses legs have the characteristics of light weight, super toughness, impact resistance, bright colors, and low friction coefficient. They can effectively prevent the glasses legs from breaking, but the surface is spray-painted, the paint layer is not durable and easy to peel off, and the glasses legs cannot be adjusted. Carbon fiber composite material glasses legs have more advantages than other materials. They are light, corrosion-resistant, and not easy to deform. They have the two characteristics of strong tensile strength and soft processability of carbon fiber. They are durable and have a strong color. However, one disadvantage of carbon fiber material is that it is relatively brittle, so carbon fiber glasses legs will break after being bent to a certain degree. Summary of the invention

[0004] The main purpose of the present invention is to provide a glasses leg and a preparation method thereof, a glasses frame and glasses, aiming to improve the toughness of the glasses leg made of carbon fiber material.

[0005] To achieve the above-mentioned purpose, the present invention proposes a pair of glasses legs, which include multiple layers of composite carbon fiber layers. The materials constituting the composite carbon fiber layers include carbon fiber fabrics and thermoplastic films, and thermoplastic bonding powder layers are arranged between each of the composite carbon fiber layers.

[0006] Optionally, the carbon fiber fabric comprises a plain weave carbon fiber fabric; and / or,

[0007] The fiber specification of the carbon fiber fabric includes any one of 3K, 6K, 12K, 24K, and 36K.

[0008] Optionally, the material of the thermoplastic film includes any one of thermoplastic polyurethane elastomer rubber, polyetherimide, polyether ketone, polysulfone and polyether sulfone.

[0009] Optionally, the thermoplastic bonding powder includes any one of polyamide powder, polyethylene powder and polyurethane powder.

[0010] Optionally, the particle size of the thermoplastic bonding powder is 200-2000 mesh.

[0011] Optionally, in the material constituting the temple of the glasses, the total mass fraction of the thermoplastic film and the thermoplastic bonding powder is 40-60%.

[0012] Optionally, the number of layers of the composite carbon fiber layer is 3 to 6.

[0013] Optionally, the length of the temple is 135-145 mm; and / or,

[0014] The width of the glasses leg is 0.5 to 1.5 cm.

[0015] Optionally, the temple further comprises a metal inlay, which is arranged at one end of the temple for connecting with the frame, so as to connect the temple and the frame.

[0016] Optionally, the material of the metal embedded part includes any one of titanium-zinc alloy, copper-zinc alloy and high-nickel alloy; and / or,

[0017] The metal inlay is bonded to the glasses leg by a thermoplastic adhesive, and the thermoplastic adhesive includes any one of polyvinyl acetate, polyvinyl acetal, perchlorethylene resin, polyacrylate, polyamide, and polysulfone.

[0018] To achieve the above object, the present invention also provides a method for preparing the above-mentioned glasses leg, comprising the following steps:

[0019] The carbon fiber fabric and the thermoplastic film are heat-pressed to prepare a prepreg fabric;

[0020] Laying down multiple layers of the prepreg fabric, placing thermoplastic bonding powder between the layers, and preparing a prefabricated board by hot pressing;

[0021] The prefabricated plate is solidified and formed by a compression molding process to obtain the temples of the glasses.

[0022] Optionally, the compression molding process has a compression temperature of 130 to 180° C., a pressure of 0.5 to 2 MPa, a pressurization time of 20 to 60 min, and the pressurization is maintained for 40 to 60 min after the heating is stopped.

[0023] Optionally, the hot pressing temperature of the hot pressing molding is 120-150° C., the pressure is 0.5-2 MPa, the pressing time is 20-60 min, and the pressing is maintained for 40-60 min after the heating is stopped.

[0024] Optionally, after the step of curing the prefabricated board by a compression molding process, the process further comprises:

[0025] The metal insert is bonded to the glasses leg after curing and forming by thermoplastic adhesive.

[0026] Furthermore, the present invention also provides a glasses frame, comprising two glasses legs and a frame, wherein the glasses legs are the glasses legs described above.

[0027] Furthermore, the present invention also provides a pair of glasses, comprising the glasses frame as described above and glasses lenses installed in the glasses frame.

[0028] In the technical solution provided by the present invention, the temples of the glasses include multiple layers of composite carbon fiber layers, and the materials constituting the composite carbon fiber layers include carbon fiber fabrics and thermoplastic films, and thermoplastic bonding powder layers are arranged between each of the composite carbon fiber layers; in this way, the toughness, impact resistance and friction resistance of the temples of the glasses are effectively improved by composite carbon fiber with thermoplastic films, and the temples of the glasses have excellent mechanical properties, extremely high tensile strength and modulus. At the same time, the interface bonding between adjacent single layers of the composite carbon fiber layers is effectively strengthened by combining the thermoplastic film with the thermoplastic bonding powder, so that the temples of the glasses have higher stability in use and longer service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 A schematic structural diagram of an embodiment of the glasses leg provided by the present invention;

[0031] Figure 2 for Figure 1 A schematic diagram of the connection structure between the glasses leg and the metal inlay is provided;

[0032] Figure 3 for Figure 2 Schematic diagram of the structure of the metal insert;

[0033] Figure 4 for Figure 1 A schematic diagram of the layer structure of the glasses leg is provided;

[0034] Figure 5 The present invention is a schematic flow chart of an embodiment of a method for preparing a temple of glasses provided by the present invention.

[0035] Description of Figure Numbers:

[0036] 10 Glasses arms 12 Thermoplastic Bonded Powder Bed 11 Composite carbon fiber layer 20 Metal inserts

[0037] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0038] To make the purpose, technical scheme and advantages of the embodiment of the present invention clearer, the technical scheme in the embodiment of the present invention will be described clearly and completely below. If the specific conditions are not specified in the embodiment, it is carried out according to the normal conditions or the conditions recommended by the manufacturer. If the reagents or instruments used do not specify the manufacturer, they are all conventional products that can be purchased commercially. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes, taking "A and / or B" as an example, including scheme A, or scheme B, or schemes that A and B meet at the same time. In addition, the technical schemes between the various embodiments can be combined with each other, but must be based on the ability of ordinary technicians in the field to achieve. When the combination of technical solutions is contradictory or cannot be achieved, it should be considered that the combination of such technical solutions does not exist, and is not within the scope of protection required by the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in the field without making creative work belong to the scope of protection of the present invention.

[0039] Carbon fiber composite material glasses legs have more advantages than other materials. They are light, corrosion-resistant, and not easy to deform. They have the two characteristics of strong tensile strength of carbon fiber and soft processability. They are durable and have a strong color. However, one disadvantage of carbon fiber material is that it is relatively brittle, so the carbon fiber glasses legs will break after being bent to a certain extent. The introduction of thermoplastic resin into the composite matrix can effectively improve the fracture toughness of the matrix and its composite material. The molecular structure of thermoplastic resin composite materials is chain-like and flexible, so they have good toughness and excellent impact resistance. In addition, thermoplastic resin composite materials also have the advantages of no storage time and temperature restrictions, short molding cycle, and simple molding process. The method of toughening carbon fiber composite materials between thermoplastic resin layers selects film toughening and particle toughening.

[0040] In view of this, in order to improve the toughness of the carbon fiber glasses leg, the present invention proposes a thermoplastic resin carbon fiber composite glasses leg 10, which is optimized and innovated on the basis of the ordinary composite glasses leg 10 and the carbon fiber glasses leg 10, and the composite material of the thermoplastic film and the carbon fiber fabric is used as the basic material to prepare the glasses leg 10. Specifically, refer to Figures 1 to 4 The figure shows a specific embodiment of the eyeglass leg 10 provided by the present invention. Figure 4 As shown, the temple 10 includes a plurality of composite carbon fiber layers 11 , the materials constituting the composite carbon fiber layers 11 include carbon fiber fabrics and thermoplastic films, and thermoplastic adhesive powder layers 12 are provided between the composite carbon fiber layers 11 .

[0041] In the technical solution provided by the present invention, the toughness, impact resistance and friction resistance of the glasses leg 10 are effectively improved by composite carbon fiber with thermoplastic film, and the glasses leg 10 has excellent mechanical properties, extremely high tensile strength and modulus. At the same time, the interface bonding between adjacent single layers of the composite carbon fiber layer 11 is effectively strengthened by combining the thermoplastic film with the thermoplastic bonding powder, so that the glasses leg 10 has higher stability in use and longer service life.

[0042] The carbon fiber fabric is preferably a carbon fiber fabric with a two-dimensional woven structure. In some embodiments of the present invention, the carbon fiber fabric includes a plain weave carbon fiber fabric, which has the advantages of wide sources, relatively low cost, and high cost performance. Further, the fiber specifications of the carbon fiber fabric include any one of 3K, 6K, 12K, 24K, and 36K.

[0043] In some embodiments of the present invention, the material of the thermoplastic film includes any one of thermoplastic polyurethane elastomer rubber (TPU), polyetherimide (PEI), polyether ketone (PEK), polysulfone (PSF) and polyether sulfone (PES), and the material has excellent strength, toughness and impact resistance.

[0044] In some embodiments of the present invention, the thermoplastic bonding powder includes any one of polyamide powder, polyethylene powder, and polyurethane powder, and has good adhesion to the carbon fiber fabric and the thermoplastic film. Furthermore, the particle size of the thermoplastic bonding powder is 200-2000 mesh, and the particle size is suitable, which is convenient for laying and subsequent molding of the thermoplastic bonding powder, improving the interlayer interface bonding force of the composite carbon fiber layer 11, so as to improve the strength and toughness of the eyeglass leg 10.

[0045] Preferably, in the present invention, the overall resin content in the temple 10 is controlled within the range of 40 to 60%, that is, in the material constituting the temple 10, the total mass fraction of the thermoplastic film and the thermoplastic bonding powder is 40 to 60%. In this way, the weight of the temple 10 can be reduced as much as possible while ensuring the structural strength, toughness and other properties of the temple 10, thereby achieving lightweighting.

[0046] In the present invention, the specific number of layers of the composite carbon fiber layer 11 is not limited, and at least two layers of the composite carbon fiber layer 11 are included. Preferably, in some embodiments of the present invention, the number of layers of the composite carbon fiber layer 11 is 3 to 6 layers, so that the toughness, impact resistance, friction resistance and stability of the eyeglass leg 10 are better, and the preparation process is relatively simple.

[0047] In some embodiments of the present invention, the length of the temple 10 (the "length" refers to the projected length of the temple 10 in the vertical direction) is 135-145 mm. In addition, the width of the temple 10 (the "width" refers to the size of the temple 10 in the horizontal direction) is 0.5-1.5 cm. In this way, the overall structure of the temple 10 is more suitable for human body wearing. In addition, the overall configuration of the temple 10 adopts a streamlined design, conforms to ergonomic design, is smooth and fits the ear, and helps relieve ear pressure.

[0048] Further, in the present invention, refer to Figure 2 and Figure 3 As shown, the eyeglass leg 10 further includes a metal insert 20, which is disposed at one end of the eyeglass leg 10 for connecting with the eyeglass frame. Specifically, the metal insert is made into an eyeglass hinge for connecting the eyeglass leg 10 and the eyeglass frame. The metal insert can be bonded to the eyeglass leg 10 using a thermoplastic adhesive.

[0049] In some embodiments of the present invention, the material of the metal embedded component 20 includes any one of titanium-zinc alloy, copper-zinc alloy, and high-nickel alloy, which has good mechanical properties, light weight, and high cost performance.

[0050] In addition, in some embodiments of the present invention, the metal insert 20 is bonded to the glasses leg 10 by a thermoplastic adhesive, and the thermoplastic adhesive includes any one of polyvinyl acetate, polyvinyl acetal, perchlorethylene resin, polyacrylate, polyamide, and polysulfone, and has strong adhesion and stable performance.

[0051] Based on the above-mentioned glasses leg 10 provided by the present invention, the present invention further provides a method for preparing the glasses leg 10. Figure 5The present invention shows an embodiment of a method for preparing the glasses leg 10, wherein the glasses leg 10 is prepared by compression molding, and specifically comprises the following steps:

[0052] Step S10, preparing a prepreg fabric by hot pressing the carbon fiber fabric and the thermoplastic film;

[0053] Step S20, stacking and laying multiple layers of the prepreg fabric, placing thermoplastic bonding powder between the layers, and preparing a prefabricated board by hot pressing;

[0054] Step S30: solidify and shape the prefabricated plate through a compression molding process to obtain the eyeglass leg 10.

[0055] First, the carbon fiber fabric is cut into fiber cloth of suitable size, and the carbon fiber fabric is flame-oxidized by using a spray gun to remove the protective layer coated on the surface of the carbon fiber fabric when it leaves the factory; the thermoplastic film is cut into films of suitable size, and then the fiber cloth and the film are stacked and placed, and the prepreg fabric is prepared by hot pressing. Then, the prepreg fabric is stacked according to the preset number of layers, and thermoplastic bonding powder is sprayed between each layer of the prepreg fabric, and a prefabricated board is prepared by hot pressing. Then, the prepared prefabricated board is trimmed, the mold is cleaned, and a release agent is applied. The trimmed prefabricated board is placed in the mold for mold closing. When screwing, lubricating oil can be applied to the screws to ensure smooth subsequent mold opening. Then, the mold with the prefabricated board placed inside is placed on a preheated molding machine, and 3 to 4 depressings are performed with an interval of 10 to 20 seconds, and molding is performed. After curing, the mold is cooled and demolded, and the eyeglass leg 10 can be obtained.

[0056] The preparation method provided by the present invention has a simple process, does not require complex equipment, and is easy to realize industrial mass production. The prepared eyeglass leg 10 has excellent toughness, impact resistance, friction resistance, extremely high tensile strength and modulus, so that the eyeglass leg 10 has higher stability in use and longer service life. It should be noted that the eyeglass leg prepared by specific metal pair molding usually includes two pairs of eyeglass legs, one is a left eyeglass leg and the other is a right eyeglass leg. In addition, for the embodiment in which the eyeglass leg 10 also includes a metal inlay 20, after the molding process is performed in step S30, it also includes a step of bonding the metal inlay 20 to the eyeglass leg 10 after curing by a thermoplastic adhesive.

[0057] In some embodiments of the present invention, the parameters of the compression molding process are set as follows: the compression temperature is 130-180° C., the pressure is 0.5-2 MPa, the pressurization time is 20-60 min, and the pressurization is maintained for 40-60 min after stopping the heating.

[0058] In some embodiments of the present invention, the parameters of the hot pressing molding are set as a hot pressing temperature of 120-150° C., a pressure of 0.5-2 MPa, a pressing time of 20-60 min, and the pressurization is maintained for 40-60 min after stopping the heating.

[0059] Furthermore, the present invention also provides a glasses frame, the glasses frame comprising two glasses legs 10 and a frame, the two glasses legs 10 are respectively a left glasses leg and a right glasses leg, and can be formed by a specific metal mold, and the structure and constituent materials of the glasses legs 10 or the preparation process thereof refer to the above embodiment. It can be understood that, since the glasses frame provided by the present invention adopts all the technical solutions of the above glasses legs 10 and the preparation method thereof, it has at least all the beneficial effects brought by the above embodiments, which will not be described one by one here.

[0060] Furthermore, the present invention also provides a pair of glasses, the glasses comprising a glasses frame and glasses lenses installed in the glasses frame, the glasses frame comprising two glasses legs 10 and the glasses frame, the two glasses legs 10 are respectively a left glasses leg and a right glasses leg, and can be formed by a specific metal mold, and the structure and constituent materials of the glasses legs 10 or the preparation method thereof refer to the above embodiments. It can be understood that, since the glasses frame provided by the present invention adopts all the technical solutions of the above glasses legs 10 and the preparation method thereof of the present invention, it at least has all the beneficial effects brought by the above embodiments, which will not be described one by one here.

[0061] The technical solution of the present invention is further described in detail below in conjunction with specific embodiments and drawings. It should be understood that the following embodiments are only used to explain the present invention, and are not used to limit the present invention.

[0062] Example 1

[0063] (1) TPU thermoplastic film and 3K plain carbon fiber fabric were selected, cut into 25 cm × 25 cm squares, stacked and placed for hot pressing. The hot pressing temperature of the hot pressing molding was 140 ° C and the pressure was 2 MPa. The pressure was removed three times before pressing, the time interval was 10 s, the pressing time was 45 min, and the pressing was continued for 50 min after the heating was stopped to obtain a prepreg fabric;

[0064] (2) Three layers of prepreg fabrics are stacked and then hot-pressed, and polyamide ultrafine thermoplastic bonding powder is sprayed between each two adjacent layers of prepreg fabrics. The powder particle size is 500 mesh. The hot pressing temperature of hot pressing is 140° C. and the pressure is 2 MPa. Before pressing, the pressure is released three times with a time interval of 10 seconds. The pressing time is 45 minutes. After stopping heating, the pressure is continuously applied for 50 minutes to obtain a prefabricated board. The total mass fraction of the thermoplastic film and the thermoplastic bonding powder in the prefabricated board is 60%;

[0065] (3) The obtained prefabricated plate is compression molded by a specific metal mold. The compression molding temperature is 140°C and the pressure is 2 MPa. The pressure is removed three times before pressurization, with a time interval of 10 seconds and a pressurization time of 45 minutes. After the heating is stopped, the pressurization is continued for 50 minutes. The plate is cooled and demolded. Then, the titanium-zinc alloy insert is bonded to the temple of the glasses with polysulfone glue. The preparation of the temple of the glasses is completed. The length of the temple of the glasses is 140 cm and the width is 0.5 cm.

[0066] Example 2

[0067] (1) PEK thermoplastic film and 6K plain carbon fiber fabric were selected, cut into 25 cm × 25 cm squares, stacked and placed for hot pressing. The hot pressing temperature of the hot pressing molding was 150 ° C and the pressure was 2 MPa. The pressure was removed three times before pressing, the time interval was 10 s, the pressing time was 60 min, and the pressing was continued for 40 min after the heating was stopped to obtain a prepreg fabric;

[0068] (2) 4 layers of prepreg fabrics are stacked and then hot-pressed, polyethylene ultrafine thermoplastic bonding powder is sprayed between each two adjacent layers of prepreg fabrics, the powder particle size is 800 mesh, the hot pressing temperature of hot pressing is 150°C, the pressure is 2MPa, the pressure is released three times before pressing, the time interval is 10s, the pressing time is 60min, and the pressing is continued for 40min after the heating is stopped to obtain a prefabricated board, and the total mass fraction of the thermoplastic film and the thermoplastic bonding powder in the prefabricated board is 60%;

[0069] (3) The obtained prefabricated plate is compression molded by a specific metal mold. The compression molding temperature is 150°C and the pressure is 2 MPa. The pressure is removed three times before pressurization, with a time interval of 10 seconds and a pressurization time of 60 minutes. After stopping the heating, the pressurization is continued for 40 minutes. The mold is cooled and demolded. Then, the titanium-zinc alloy insert is bonded to the temple of the glasses with polyacrylate glue. The preparation of the temple of the glasses is completed. The length of the temple of the glasses is 140 cm and the width is 0.6 cm.

[0070] Example 3

[0071] (1) PEI thermoplastic film and 6K plain carbon fiber fabric were selected, cut into 25 cm × 25 cm squares, stacked and placed for hot pressing. The hot pressing temperature of the hot pressing molding was 140 ° C and the pressure was 2 MPa. The pressure was removed three times before pressing, the time interval was 10 s, the pressing time was 60 min, and the pressing was continued for 40 min after the heating was stopped to obtain a prepreg fabric;

[0072] (2) 4 layers of prepreg fabrics are stacked and then hot-pressed, and polyurethane ultrafine thermoplastic bonding powder is sprayed between each two adjacent layers of prepreg fabrics. The powder particle size is 700 mesh. The hot pressing temperature of hot pressing is 140° C. and the pressure is 2 MPa. Before pressing, the pressure is released three times with a time interval of 10 seconds. The pressing time is 60 minutes. After stopping heating, the pressure is continuously applied for 40 minutes to obtain a prefabricated board. The total mass fraction of the thermoplastic film and the thermoplastic bonding powder in the prefabricated board is 55%;

[0073] (3) The obtained prefabricated plate is compression molded by a specific metal mold. The compression molding temperature is 140°C and the pressure is 2 MPa. The pressure is removed three times before pressurization, with a time interval of 10 seconds and a pressurization time of 60 minutes. After stopping the heating, the pressurization is continued for 40 minutes. The plate is cooled and demolded. Then, the high nickel alloy insert is bonded to the temple of the glasses with polyvinyl acetate glue. The preparation of the temple of the glasses is completed. The temple of the glasses is 140 cm long and 0.6 cm wide.

[0074] Example 4

[0075] (1) PES thermoplastic film and 3K plain carbon fiber fabric were selected, cut into 25 cm × 25 cm squares, stacked and placed for hot pressing. The hot pressing temperature of the hot pressing molding was 150 ° C and the pressure was 2 MPa. The pressure was removed three times before pressing, the time interval was 10 s, the pressing time was 50 min, and the pressing was continued for 40 min after the heating was stopped to obtain a prepreg fabric;

[0076] (2) Five layers of prepreg fabrics were stacked and then hot-pressed, and polyamide ultrafine thermoplastic bonding powder was sprayed between each two adjacent layers of prepreg fabrics. The powder particle size was 800 mesh. The hot pressing temperature of the hot pressing molding was 150° C. and the pressure was 2 MPa. The pressure was removed three times before pressing, with a time interval of 10 seconds. The pressing time was 50 minutes. After stopping the heating, the pressing was continued for 40 minutes to obtain a prefabricated board. The total mass fraction of the thermoplastic film and the thermoplastic bonding powder in the prefabricated board was 58%;

[0077] (3) The obtained prefabricated plate is compression molded by a specific metal mold. The compression molding temperature is 150°C and the pressure is 2 MPa. The pressure is removed three times before pressurization, with a time interval of 10 seconds and a pressurization time of 50 minutes. After stopping the heating, the pressurization is continued for 40 minutes. The plate is cooled and demolded. Then, the titanium-zinc alloy insert is bonded to the temple of the glasses with polysulfone glue. The preparation of the temple of the glasses is completed. The length of the temple of the glasses is 145 cm and the width is 0.8 cm.

[0078] Example 5

[0079] (1) PES thermoplastic film and 3K plain carbon fiber fabric were selected, cut into 25 cm × 25 cm squares, stacked and placed for hot pressing. The hot pressing temperature of the hot pressing molding was 150 ° C and the pressure was 2 MPa. The pressure was removed three times before pressing, the time interval was 10 s, the pressing time was 50 min, and the pressing was continued for 40 min after the heating was stopped to obtain a prepreg fabric;

[0080] (2) Five layers of prepreg fabrics were stacked and then hot-pressed, and polyamide ultrafine thermoplastic bonding powder was sprayed between each two adjacent layers of prepreg fabrics. The powder particle size was 800 mesh. The hot pressing temperature of the hot pressing molding was 150° C. and the pressure was 2 MPa. The pressure was removed three times before pressing, with a time interval of 10 seconds. The pressing time was 50 minutes. After stopping the heating, the pressing was continued for 40 minutes to obtain a prefabricated board. The total mass fraction of the thermoplastic film and the thermoplastic bonding powder in the prefabricated board was 58%;

[0081] (3) The obtained prefabricated plate is compression molded by a specific metal mold. The compression molding temperature is 150°C and the pressure is 2 MPa. The pressure is removed three times before pressurization, with a time interval of 10 seconds and a pressurization time of 50 minutes. After stopping the heating, the pressurization is continued for 40 minutes. The plate is cooled and demolded. Then, the titanium-zinc alloy insert is bonded to the temple of the glasses with polysulfone glue. The preparation of the temple of the glasses is completed. The length of the temple of the glasses is 145 cm and the width is 0.8 cm.

[0082] Example 6

[0083] (1) PSF thermoplastic film and 3K plain carbon fiber fabric were selected, cut into 25 cm × 25 cm squares, stacked and placed for hot pressing. The hot pressing temperature of the hot pressing molding was 150 ° C and the pressure was 2 MPa. The pressure was removed three times before pressing, the time interval was 10 s, the pressing time was 50 min, and the pressing was continued for 40 min after the heating was stopped to obtain a prepreg fabric;

[0084] (2) Five layers of prepreg fabrics were stacked and then hot-pressed, and polyamide ultrafine thermoplastic bonding powder was sprayed between each two adjacent layers of prepreg fabrics. The powder particle size was 800 mesh. The hot pressing temperature of the hot pressing molding was 150° C. and the pressure was 2 MPa. The pressure was removed three times before pressing, with a time interval of 10 seconds. The pressing time was 50 minutes. After stopping the heating, the pressing was continued for 40 minutes to obtain a prefabricated board. The total mass fraction of the thermoplastic film and the thermoplastic bonding powder in the prefabricated board was 58%;

[0085] (3) The obtained prefabricated plate is compression molded by a specific metal mold. The compression molding temperature is 150°C and the pressure is 2 MPa. The pressure is removed three times before pressurization, with a time interval of 10 seconds and a pressurization time of 50 minutes. After stopping the heating, the pressurization is continued for 40 minutes. The plate is cooled and demolded. Then, the titanium-zinc alloy insert is bonded to the temple of the glasses with polysulfone glue. The preparation of the temple of the glasses is completed. The length of the temple of the glasses is 145 cm and the width is 0.8 cm.

[0086] The above are only preferred embodiments of the present invention, and do not limit the patent scope of the present invention. For those skilled in the art, the present invention may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the patent protection scope of the present invention.

Claims

1. A glasses leg, characterized in that: The glasses leg comprises multiple layers of composite carbon fiber layers, the materials constituting the composite carbon fiber layers comprise carbon fiber fabrics and thermoplastic adhesive films, and thermoplastic bonding powder layers are arranged between the composite carbon fiber layers.

2. The eyeglass leg according to claim 1, characterized in that: The carbon fiber fabric comprises a plain carbon fiber fabric; and / or, The fiber specification of the carbon fiber fabric includes any one of 3K, 6K, 12K, 24K, and 36K.

3. The eyeglass leg according to claim 1, characterized in that: The material of the thermoplastic film includes any one of thermoplastic polyurethane elastomer rubber, polyetherimide, polyether ketone, polysulfone and polyether sulfone.

4. The eyeglass leg according to claim 1, characterized in that: The thermoplastic bonding powder includes any one of polyamide powder, polyethylene powder and polyurethane powder.

5. The eyeglass leg according to claim 1, characterized in that: The particle size of the thermoplastic bonding powder is 200-2000 meshes.

6. The eyeglass arm according to claim 1, characterized in that: In the material constituting the temple of the glasses, the total mass fraction of the thermoplastic film and the thermoplastic bonding powder is 40-60%.

7. The eyeglass arm according to claim 1, characterized in that: The number of layers of the composite carbon fiber layer is 3 to 6.

8. The eyeglass arm according to claim 1, characterized in that: The length of the temples is 135 to 145 mm; and / or, The width of the glasses leg is 0.5 to 1.5 cm.

9. The eyeglass arm according to claim 1, characterized in that: The glasses leg also includes a metal inlay, which is arranged at one end of the glasses leg for connecting with the glasses frame, and is used to connect the glasses leg and the glasses frame.

10. The eyeglass arm according to claim 9, characterized in that: The material of the metal embedded part includes any one of titanium-zinc alloy, copper-zinc alloy and high-nickel alloy; and / or, The metal inlay is bonded to the glasses leg by a thermoplastic adhesive, and the thermoplastic adhesive includes any one of polyvinyl acetate, polyvinyl acetal, perchlorethylene resin, polyacrylate, polyamide, and polysulfone.

11. A method for preparing the temple of glasses according to any one of claims 1 to 10, characterized in that: The following steps are involved: The carbon fiber fabric and the thermoplastic film are heat-pressed to prepare a prepreg fabric; Laying down multiple layers of the prepreg fabric, placing thermoplastic bonding powder between the layers, and preparing a prefabricated board by hot pressing; The prefabricated plate is solidified and formed by a compression molding process to obtain the temples of the glasses.

12. The method for preparing the temple of glasses according to claim 11, characterized in that: The compression molding process has a compression temperature of 130 to 180° C., a pressure of 0.5 to 2 MPa, a compression time of 20 to 60 minutes, and the compression is maintained for 40 to 60 minutes after the heating is stopped.

13. The method for preparing the temple of glasses according to claim 11, characterized in that: The hot pressing temperature of the hot pressing molding is 120-150° C., the pressure is 0.5-2 MPa, the pressing time is 20-60 min, and the pressing is maintained for 40-60 min after the heating is stopped.

14. The method for preparing the temple of glasses according to claim 11, characterized in that: After the step of curing the prefabricated board by the compression molding process, the method further comprises: The metal insert is bonded to the glasses leg after curing and forming by thermoplastic adhesive.

15. A glasses frame, characterized in that: The glasses frame comprises two glasses legs and a glasses frame, and the glasses legs are the glasses legs as described in any one of claims 1 to 10.

16. A pair of glasses, characterized in that: The glasses include the glasses frame as claimed in claim 15 and glasses lenses installed in the glasses frame.

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