Split combined comb and processing method thereof

Abstract

The invention is suitable for the technical field of comb production, and provides a split combined comb and a processing method thereof.The split combined comb comprises a comb handle and comb teeth, the comb handle is detachably connected with the comb teeth, the comb handle is made of bamboo, the comb teeth are made of degradable plastic, and the comb teeth are made of plastic. The processing method of the split combined comb comprises the following steps: a, manufacturing the comb handle: 1) cutting bamboo into a designed size; and (2) the cut bamboo wood is subjected to one-time forming through a milling cutter, and then the comb handle is obtained through grinding. B, manufacturing comb teeth: 1) preparing a degradable plastic raw material; (2) the raw materials are mixed and then added into injection molding equipment, the comb teeth are obtained through injection molding, the comb handle is detachably connected with the comb teeth, the comb handle is made of bamboo, the comb teeth are made of degradable plastics, the bamboo comb handle can be repeatedly used, more energy is saved, the environment is better protected, when the comb teeth need to be replaced, the comb teeth can be detached and directly replaced, and the comb teeth are convenient to replace. And the environment pollution is reduced by the degradable plastic comb teeth.

Description

Technical Field

[0001] The invention belongs to the technical field of comb production, and in particular relates to a split combined comb and a processing method thereof. Background Art

[0002] The production process of traditional bamboo combs mainly consists of seven parts: processing bamboo, grooving bamboo, splicing and gluing bamboo, grinding the side of the comb, roughing teeth, shaping the back of the comb, and painting and polishing. The production of traditional bamboo combs has problems such as high labor demand, large land occupation, and low mechanization level, which has become an important shortcoming restricting the healthy and sustainable development of the bamboo comb industry. At present, many hotels and homestays provide guests with disposable plastic combs, but the existing disposable plastic combs are directly thrown away after use, which poses a serious problem of plastic pollution. Summary of the invention

[0003] The present invention provides a split combined comb, aiming to solve the above problems.

[0004] The present invention is implemented as follows: a split combined comb, comprising a comb handle and comb teeth, wherein the comb handle and the comb teeth are detachably connected, the comb handle is made of bamboo, and the comb teeth are made of degradable plastic: Preferably, a slot for engaging with a comb handle is provided on the back of the comb teeth.

[0005] The present invention also provides a method for processing the above-mentioned split combined comb, comprising the following steps: a. Making the comb handle: 1) Cut the bamboo into designed size; 2) The cut bamboo is shaped at one time by a milling cutter, and then polished to obtain a comb handle.

[0006] b. Making comb teeth: 1) Prepare biodegradable plastic raw materials; 2) The raw materials are mixed and added into an injection molding device, and the comb teeth are obtained by injection molding.

[0007] Preferably, the polished comb handle is subjected to antibacterial treatment, and the antibacterial treatment comprises the following steps: Use ethanol vacuum ultrasound to clean the polished comb handle for 20-30 minutes to remove impurities; Then, water vapor is introduced to expand the pores, and after cooling, the pores are dried at 40-45°C, and then irradiated with ultraviolet light for 5-10 minutes; Put the comb handle irradiated by ultraviolet light into a culture vessel and inject the cellulose fermentation liquid of Acetobacter xylinum into it, wrap it up, and culture it at 28-30℃ for 2-4 days, then take out the comb handle and wash it with deionized water for 2-3 times; The cleaned comb handle is immersed in the antibacterial finishing liquid, vacuumed to below 0.01MPa, ultrasonically treated for 10-20min, and after immersion for 3-5h, the bamboo material is taken out and irradiated with a dose of 10-20kGy. Finally, the impurities on the surface are cleaned with deionized water, and dried at 50-60℃ to obtain a finished comb handle.

[0008] Through antibacterial treatment, the bamboo comb handle has good antibacterial properties to prevent mold in humid conditions. First, the impurities are cleaned and then the pores are expanded with water vapor to make the bamboo more dense and porous with a larger specific surface area. Then, during the fermentation process, bacterial cellulose grows into the bamboo fiber to form an interlaced interpenetrating network, which can improve the mechanical properties of the comb handle. It also has a large storage space for antibacterial finishing liquid and excellent adsorption. With the assistance of vacuum and ultrasound, the antibacterial finishing liquid can enter the interior of the bamboo more fully and improve the antibacterial properties. Through electron beam irradiation treatment, the antibacterial layer on the surface of the comb handle is denser, has good water resistance, and is tightly combined with the comb handle to improve the antibacterial properties.

[0009] Preferably, the preparation method of the antibacterial finishing liquid is as follows: by weight, 10-20 parts of chitosan and 8-12 parts of soy protein isolate are taken, the soy protein isolate is added to 40-50 parts of deionized water, and then 20-30 parts of ethanol are added, stirred for 30-40 minutes, and then chitosan is added, and stirred for 30-50 minutes to obtain the antibacterial finishing liquid.

[0010] By adding chitosan, it has a wide spectrum of antibacterial properties. By adding soy protein isolate and using ethanol to cap and modify the soy protein isolate to reduce the hydrophilic groups in the protein and improve water resistance, a hydrophobic antibacterial layer is formed on the bamboo, thereby improving the antibacterial and anti-mildew effects.

[0011] Preferably, the biodegradable plastic comprises the following raw materials in parts by weight: 80-100 parts of polypropylene resin, 30-40 parts of polylactic acid, 25-35 parts of modified starch, 6-10 parts of modified mannitol, 1-2 parts of lubricant, and 0.5-1.5 parts of antistatic agent.

[0012] Preferably, the preparation method of the modified starch is as follows: 20-30 parts of corn starch are taken by weight, spread to a thickness of 0.2-0.5 cm, and irradiated by electron beam with an irradiation dose of 80-100 kGy, and then 1-3 parts of sodium dodecyl sulfate and 60-70 parts of deionized water are added, stirred for reaction for 1.5-2 hours, and then 6-10 parts of maleic anhydride are added and mixed evenly, and stirred for reaction in a constant temperature water bath of 60-70° C. for 60-80 minutes, and then spray-dried after filtration to obtain the modified starch, and the macromolecular chain structure of the corn starch is sheared and modified by irradiation treatment, and then sodium dodecyl sulfate is added for deproteinization, which makes it easier for the molecular chain to move and rearrange, thereby promoting the structural optimization of the starch, and finally maleic anhydride is added for grafting reaction to form a stable network system and improve the mechanical properties.

[0013] Preferably, the preparation method of the modified mannitol is as follows: 5-10 parts of mannitol are taken by weight, dissolved in 70-80 parts of deionized water, 1 mol / L hydrochloric acid aqueous solution is added dropwise under stirring until the pH is 3-5, and stirring is continued for 1-2 hours; then 3-5 parts of dopamine hydrochloride are added, and the reaction is carried out in the dark under nitrogen protection for 1-3 hours. The solution after the reaction is dialyzed in deionized water and freeze-dried to obtain the modified mannitol. By introducing chemically bonded dopamine into the mannitol structure, the dopamine group undergoes polymerization reaction to form a strong chemical bond, thereby improving the mechanical properties.

[0014] Preferably, the lubricant includes one or more combinations of pentaerythritol, butyl stearate, and stearyl alcohol.

[0015] Preferably, the antistatic agent includes at least one of stearyl trimethyl ammonium chloride and stearyl dimethyl amyl ammonium chloride.

[0016] Compared with the prior art, the embodiments of the present application have the following beneficial effects: The split combined comb provided by the present invention is detachably connected to the comb teeth through a comb handle, the comb handle is made of bamboo, and the comb teeth are made of degradable plastic. The bamboo comb handle can be reused, which is more energy-saving and environmentally friendly. The bamboo is cut into standard sizes and formed in one step by a milling cutter, with fewer processes and less labor, thus improving production efficiency. When the comb teeth need to be replaced, they can be directly replaced by disassembling them, and the degradable plastic comb teeth reduce environmental pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a split combined comb provided by the present invention; Figure 2 It is a structural schematic diagram of a comb handle in a split combined comb provided by the present invention; Figure 3 The present invention provides a flow chart of a method for processing a split combined comb.

[0018] Notes on the accompanying drawings: 1. Comb teeth; 2. Comb handle. DETAILED DESCRIPTION

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0020] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0021] Example 1 The embodiment of the present invention provides a split combined comb, such as Figure 1-Figure 2 As shown, it comprises a comb handle 2 and comb teeth 1, the comb handle 2 is detachably connected to the comb teeth 1. In this embodiment, a card slot for connecting with the comb handle 2 is provided on the back of the comb teeth 1. The comb handle 2 is made of bamboo, and the comb teeth 1 are made of degradable plastic: like Figure 3 As shown, the processing method of the split combined comb comprises the following steps: a. Making the comb handle: 1) Cut the bamboo into designed size; 2) The cut bamboo is shaped at one time by a milling cutter, and then polished to obtain a comb handle.

[0022] b. Making comb teeth: 1) Prepare biodegradable plastic raw materials; 2) The raw materials are mixed and added into an injection molding device, and the comb teeth are obtained by injection molding.

[0023] Furthermore, the polished comb handle is subjected to antibacterial treatment, and the antibacterial treatment comprises the following steps: The polished comb handle was cleaned of impurities using ethanol vacuum ultrasound for 20 min; Then water vapor was introduced to expand the pores, and after cooling, it was dried at 40°C and then irradiated with ultraviolet light for 5 minutes; The comb handle irradiated with ultraviolet light was placed in a culture vessel and injected with Acetobacter xylinum cellulose fermentation liquid, wrapped, and cultured at 28°C for 2 days. The comb handle was taken out and washed twice with deionized water. The cleaned comb handle was immersed in the antibacterial finishing liquid, vacuumed to below 0.01 MPa, ultrasonically treated for 10 minutes, and after immersion for 3 hours, the bamboo raw material was taken out and irradiated with a dose of 10 kGy. Finally, the impurities on the surface were cleaned with deionized water and dried at 50°C to obtain a finished comb handle.

[0024] Furthermore, the preparation method of the antibacterial finishing liquid is as follows: by weight, 10 parts of chitosan and 8 parts of soy protein isolate are taken, the soy protein isolate is added to 40 parts of deionized water, and then 20 parts of ethanol are added, stirred for 30 minutes, and then chitosan is added, and stirred for 30 minutes to obtain the antibacterial finishing liquid.

[0025] In this embodiment, the biodegradable plastic includes the following raw materials in parts by weight: 80 parts of polypropylene resin, 30 parts of polylactic acid, 25 parts of modified starch, 6 parts of modified mannitol, 1 part of lubricant, and 0.5.5 parts of antistatic agent.

[0026] In a specific implementation, the preparation method of the modified starch is as follows: 20 parts of corn starch are taken by weight, spread with a thickness of 0.2 cm, and irradiated with an electron beam at a dose of 80 kGy, and then 1 part of sodium dodecyl sulfate and 60 parts of deionized water are added, stirred for reaction for 1.5 hours, and then 6 parts of maleic anhydride are added and mixed evenly, stirred for reaction in a constant temperature water bath at 60°C for 60 minutes, filtered, and spray-dried to obtain the modified starch.

[0027] Preferably, the preparation method of the modified mannitol is as follows: take 5 parts of mannitol by weight, dissolve it in 70 parts of deionized water, add 1 mol / L hydrochloric acid aqueous solution dropwise under stirring until the pH is 3, and continue stirring for 1 hour; then add 3 parts of dopamine hydrochloride, react in the dark under nitrogen protection for 1 hour, dialyze the solution after the reaction in deionized water, and freeze-dry to obtain modified mannitol.

[0028] In this embodiment, the lubricant includes one or more combinations of pentaerythritol, butyl stearate, and stearyl alcohol, and the antistatic agent includes at least one of stearyl trimethyl ammonium chloride and stearyl dimethyl amyl ammonium chloride.

[0029] Example 2 The embodiment of the present invention provides a split combined comb, such as Figure 1-Figure 2 As shown, it includes a comb handle and comb teeth, the comb handle and the comb teeth are detachably connected. In this embodiment, a card slot for connecting with the comb handle is provided on the back of the comb teeth. The comb handle is made of bamboo, and the comb teeth are made of degradable plastic: like Figure 3 As shown, the processing method of the split combined comb comprises the following steps: a. Making the comb handle: 1) Cut the bamboo into designed size; 2) The cut bamboo is shaped at one time by a milling cutter, and then polished to obtain a comb handle.

[0030] b. Making comb teeth: 1) Prepare biodegradable plastic raw materials; 2) The raw materials are mixed and added into an injection molding device, and the comb teeth are obtained by injection molding.

[0031] Furthermore, the polished comb handle is subjected to antibacterial treatment, and the antibacterial treatment comprises the following steps: The polished comb handle was cleaned of impurities using ethanol vacuum ultrasound for 20 min; Then water vapor was introduced to expand the pores, and after cooling, it was dried at 40°C and then irradiated with ultraviolet light for 5 minutes; The comb handle irradiated with ultraviolet light was placed in a culture vessel and injected with Acetobacter xylinum cellulose fermentation liquid, wrapped, and cultured at 28°C for 2 days. The comb handle was taken out and washed twice with deionized water. The cleaned comb handle was immersed in the antibacterial finishing liquid, vacuumed to below 0.01 MPa, ultrasonically treated for 10 minutes, and after immersion for 3 hours, the bamboo raw material was taken out and irradiated with a dose of 10 kGy. Finally, the impurities on the surface were cleaned with deionized water and dried at 50°C to obtain a finished comb handle.

[0032] Furthermore, the preparation method of the antibacterial finishing liquid is as follows: by weight, 10 parts of chitosan and 8 parts of soy protein isolate are taken, the soy protein isolate is added to 40 parts of deionized water, and then 20 parts of ethanol are added, stirred for 30 minutes, and then chitosan is added, and stirred for 30 minutes to obtain the antibacterial finishing liquid.

[0033] In this embodiment, the biodegradable plastic includes the following raw materials in parts by weight: 85 parts of polypropylene resin, 32 parts of polylactic acid, 28 parts of modified starch, 7 parts of modified mannitol, 1.2 parts of lubricant, and 0.8 parts of antistatic agent.

[0034] In a specific implementation, the preparation method of the modified starch is as follows: 20 parts of corn starch are taken by weight, spread with a thickness of 0.2 cm, and irradiated with an electron beam at a dose of 80 kGy, and then 1 part of sodium dodecyl sulfate and 60 parts of deionized water are added, stirred for reaction for 1.5 hours, and then 6 parts of maleic anhydride are added and mixed evenly, stirred for reaction in a constant temperature water bath at 60°C for 60 minutes, filtered, and spray-dried to obtain the modified starch.

[0035] Preferably, the preparation method of the modified mannitol is as follows: take 5 parts of mannitol by weight, dissolve it in 70 parts of deionized water, add 1 mol / L hydrochloric acid aqueous solution dropwise under stirring until the pH is 3, and continue stirring for 1 hour; then add 3 parts of dopamine hydrochloride, react in the dark under nitrogen protection for 1 hour, dialyze the solution after the reaction in deionized water, and freeze-dry to obtain modified mannitol.

[0036] In this embodiment, the lubricant includes one or more combinations of pentaerythritol, butyl stearate, and stearyl alcohol, and the antistatic agent includes at least one of stearyl trimethyl ammonium chloride and stearyl dimethyl amyl ammonium chloride.

[0037] Example 3 The embodiment of the present invention provides a split combined comb, such as Figure 1-Figure 2 As shown, it includes a comb handle and comb teeth, the comb handle and the comb teeth are detachably connected. In this embodiment, a card slot for connecting with the comb handle is provided on the back of the comb teeth. The comb handle is made of bamboo, and the comb teeth are made of degradable plastic: like Figure 3 As shown, the processing method of the split combined comb comprises the following steps: a. Making the comb handle: 1) Cut the bamboo into designed size; 2) The cut bamboo is shaped at one time by a milling cutter, and then polished to obtain a comb handle.

[0038] b. Making comb teeth: 1) Prepare biodegradable plastic raw materials; 2) The raw materials are mixed and added into an injection molding device, and the comb teeth are obtained by injection molding.

[0039] Furthermore, the polished comb handle is subjected to antibacterial treatment, and the antibacterial treatment comprises the following steps: The polished comb handle was cleaned of impurities using ethanol vacuum ultrasound for 25 min; Then water vapor was introduced to expand the pores, and after cooling, it was dried at 42.5°C and then irradiated with ultraviolet light for 7.5 minutes; The comb handle irradiated with ultraviolet light was placed in a culture vessel and injected with Acetobacter xylinum cellulose fermentation liquid, wrapped, and cultured at 29°C for 3 days. The comb handle was taken out and washed twice with deionized water. The cleaned comb handle was immersed in the antibacterial finishing liquid, vacuumed to below 0.01 MPa, ultrasonically treated for 15 minutes, and after immersion for 4 hours, the bamboo raw material was taken out and irradiated with a dose of 15 kGy. Finally, the impurities on the surface were cleaned with deionized water and dried at 55°C to obtain a finished comb handle.

[0040] Furthermore, the preparation method of the antibacterial finishing liquid is as follows: 15 parts of chitosan and 10 parts of soy protein isolate are taken by weight, the soy protein isolate is added to 45 parts of deionized water, and then 25 parts of ethanol are added, stirred for 35 minutes, and then chitosan is added, and stirred for 40 minutes to obtain the antibacterial finishing liquid.

[0041] In this embodiment, the biodegradable plastic includes the following raw materials in parts by weight: 90 parts of polypropylene resin, 35 parts of polylactic acid, 30 parts of modified starch, 8 parts of modified mannitol, 1.5 parts of lubricant, and 1 part of antistatic agent.

[0042] In a specific implementation, the preparation method of the modified starch is as follows: 25 parts of corn starch are taken by weight, spread with a thickness of 0.35 cm, and irradiated with an electron beam at a dose of 90 kGy, and then 2 parts of sodium dodecyl sulfate and 65 parts of deionized water are added, stirred for reaction for 1.75 hours, and then 8 parts of maleic anhydride are added and mixed evenly, and stirred for reaction in a constant temperature water bath at 65°C for 70 minutes, and then filtered and spray-dried to obtain the modified starch.

[0043] Preferably, the preparation method of the modified mannitol is as follows: 5-10 parts of mannitol are taken by weight, dissolved in 70-80 parts of deionized water, 1 mol / L hydrochloric acid aqueous solution is added dropwise under stirring until the pH is 3-5, and stirring is continued for 1-2 hours; then 3-5 parts of dopamine hydrochloride are added, and the reaction is carried out in the dark under nitrogen protection for 1-3 hours. The solution after the reaction is dialyzed in deionized water and freeze-dried to obtain the modified mannitol.

[0044] In this embodiment, the lubricant includes one or more combinations of pentaerythritol, butyl stearate, and stearyl alcohol, and the antistatic agent includes at least one of stearyl trimethyl ammonium chloride and stearyl dimethyl amyl ammonium chloride.

[0045] Example 4 The embodiment of the present invention provides a split combined comb, such as Figure 1-Figure 2 As shown, it includes a comb handle and comb teeth, the comb handle and the comb teeth are detachably connected. In this embodiment, a card slot for connecting with the comb handle is provided on the back of the comb teeth. The comb handle is made of bamboo, and the comb teeth are made of degradable plastic: like Figure 3 As shown, the processing method of the split combined comb comprises the following steps: a. Making the comb handle: 1) Cut the bamboo into designed size; 2) The cut bamboo is shaped at one time by a milling cutter, and then polished to obtain a comb handle.

[0046] b. Making comb teeth: 1) Prepare biodegradable plastic raw materials; 2) The raw materials are mixed and added into an injection molding device, and the comb teeth are obtained by injection molding.

[0047] Furthermore, the polished comb handle is subjected to antibacterial treatment, and the antibacterial treatment comprises the following steps: The polished comb handle was cleaned of impurities using ethanol vacuum ultrasound for 30 min; Then water vapor was introduced to expand the pores, and after cooling, it was dried at 45°C and then irradiated with ultraviolet light for 10 minutes; The comb handle irradiated with ultraviolet light was placed in a culture vessel and injected with Acetobacter xylinum cellulose fermentation liquid, wrapped, and cultured at 30°C for 4 days, and the comb handle was taken out and washed with deionized water for 3 times; The cleaned comb handle was immersed in the antibacterial finishing liquid, vacuumed to below 0.01 MPa, ultrasonically treated for 20 minutes, and the bamboo raw material was taken out after immersion for 5 hours. It was irradiated with a dose of 20 kGy, and finally the surface impurities were cleaned with deionized water and dried at 60°C to obtain a finished comb handle.

[0048] Furthermore, the preparation method of the antibacterial finishing liquid is as follows: take 20 parts of chitosan and 12 parts of soy protein isolate by weight, add the soy protein isolate to 50 parts of deionized water, then add 30 parts of ethanol, stir for 40 minutes, then add chitosan, and stir for 50 minutes to obtain the antibacterial finishing liquid.

[0049] In this embodiment, the biodegradable plastic includes the following raw materials in parts by weight: 95 parts of polypropylene resin, 38 parts of polylactic acid, 32 parts of modified starch, 9 parts of modified mannitol, 1.8 parts of lubricant, and 1.2 parts of antistatic agent.

[0050] In a specific implementation, the preparation method of the modified starch is as follows: 30 parts of corn starch are taken by weight, spread with a thickness of 0.5 cm, and irradiated with an electron beam at a dose of 100 kGy, and then 3 parts of sodium dodecyl sulfate and 70 parts of deionized water are added, stirred for reaction for 1.2 hours, and then 10 parts of maleic anhydride are added and mixed evenly, and stirred for reaction in a constant temperature water bath at 70°C for 80 minutes, and then filtered and spray-dried to obtain the modified starch.

[0051] Preferably, the preparation method of the modified mannitol is as follows: take 10 parts of mannitol by weight, dissolve it in 80 parts of deionized water, add 1 mol / L hydrochloric acid aqueous solution dropwise under stirring until the pH is 5, and continue stirring for 2 hours; then add 5 parts of dopamine hydrochloride, react in the dark under nitrogen protection for 3 hours, dialyze the solution after the reaction in deionized water, and freeze-dry to obtain modified mannitol.

[0052] In this embodiment, the lubricant includes one or more combinations of pentaerythritol, butyl stearate, and stearyl alcohol, and the antistatic agent includes at least one of stearyl trimethyl ammonium chloride and stearyl dimethyl amyl ammonium chloride.

[0053] Example 5 The embodiment of the present invention provides a split combined comb, such as Figure 1-Figure 2 As shown, it includes a comb handle and comb teeth, the comb handle and the comb teeth are detachably connected. In this embodiment, a card slot for connecting with the comb handle is provided on the back of the comb teeth. The comb handle is made of bamboo, and the comb teeth are made of degradable plastic: like Figure 3 As shown, the processing method of the split combined comb comprises the following steps: a. Making the comb handle: 1) Cut the bamboo into designed size; 2) The cut bamboo is shaped at one time by a milling cutter, and then polished to obtain a comb handle.

[0054] b. Making comb teeth: 1) Prepare biodegradable plastic raw materials; 2) The raw materials are mixed and added into an injection molding device, and the comb teeth are obtained by injection molding.

[0055] Furthermore, the polished comb handle is subjected to antibacterial treatment, and the antibacterial treatment comprises the following steps: The polished comb handle was cleaned of impurities using ethanol vacuum ultrasound for 30 min; Then water vapor was introduced to expand the pores, and after cooling, it was dried at 45°C and then irradiated with ultraviolet light for 10 minutes; The comb handle irradiated with ultraviolet light was placed in a culture vessel and injected with Acetobacter xylinum cellulose fermentation liquid, wrapped, and cultured at 30°C for 4 days, and the comb handle was taken out and washed with deionized water for 3 times; The cleaned comb handle was immersed in the antibacterial finishing liquid, vacuumed to below 0.01 MPa, ultrasonically treated for 20 minutes, and the bamboo raw material was taken out after immersion for 5 hours. It was irradiated with a dose of 20 kGy, and finally the surface impurities were cleaned with deionized water and dried at 60°C to obtain a finished comb handle.

[0056] Furthermore, the preparation method of the antibacterial finishing liquid is as follows: take 20 parts of chitosan and 12 parts of soy protein isolate by weight, add the soy protein isolate to 50 parts of deionized water, then add 30 parts of ethanol, stir for 40 minutes, then add chitosan, and stir for 50 minutes to obtain the antibacterial finishing liquid.

[0057] In this embodiment, the biodegradable plastic includes the following raw materials in parts by weight: 100 parts of polypropylene resin, 40 parts of polylactic acid, 35 parts of modified starch, 10 parts of modified mannitol, 2 parts of lubricant, and 0.1.5 parts of antistatic agent.

[0058] In a specific implementation, the preparation method of the modified starch is as follows: 30 parts of corn starch are taken by weight, spread with a thickness of 0.5 cm, and irradiated with an electron beam at a dose of 100 kGy, and then 3 parts of sodium dodecyl sulfate and 70 parts of deionized water are added, stirred for reaction for 1.2 hours, and then 10 parts of maleic anhydride are added and mixed evenly, and stirred for reaction in a constant temperature water bath at 70°C for 80 minutes, and then filtered and spray-dried to obtain the modified starch.

[0059] Preferably, the preparation method of the modified mannitol is as follows: take 10 parts of mannitol by weight, dissolve it in 80 parts of deionized water, add 1 mol / L hydrochloric acid aqueous solution dropwise under stirring until the pH is 5, and continue stirring for 2 hours; then add 5 parts of dopamine hydrochloride, react in the dark under nitrogen protection for 3 hours, dialyze the solution after the reaction in deionized water, and freeze-dry to obtain modified mannitol.

[0060] In this embodiment, the lubricant includes one or more combinations of pentaerythritol, butyl stearate, and stearyl alcohol, and the antistatic agent includes at least one of stearyl trimethyl ammonium chloride and stearyl dimethyl amyl ammonium chloride.

[0061] Comparative Example 1 Compared with Example 3, the antibacterial treatment step does not include "placing the comb handle after ultraviolet irradiation into a culture vessel and injecting Acetobacter xylinum cellulose fermentation liquid, wrapping it, culturing it at 29° C. for 3 days, taking out the comb handle and washing it twice with deionized water".

[0062] Comparative Example 2 Compared with Example 3, the antibacterial treatment step does not include "irradiation treatment with a dose of 15 kGy".

[0063] Comparative Example 3 Compared with Example 3, the soy protein isolate in the preparation method of the antibacterial finishing liquid is replaced by an equal amount of deionized water.

[0064] Comparative Example 4 Compared with Example 3, the comb handle is not subjected to antibacterial treatment.

[0065] Comparative Example 5: Compared with Example 3, the modified starch in the degradable plastic raw material is replaced by ordinary starch.

[0066] Comparative Example 6 Compared with Example 3, the modified mannitol in the degradable plastic raw material is replaced by ordinary mannitol.

[0067] Comparative Example 7 Compared with Example 3, the modified starch in the degradable plastic raw material is replaced by ordinary starch and the modified mannitol is replaced by ordinary mannitol.

[0068] Comparative Example 8 Plastic combs currently used in hotels.

[0069] Performance Test 1: According to the test method for mildew resistance in GB / T18261-2013, the mildew resistance of the comb handles of Examples 1-5 and Comparative Examples 1-4 was tested using Aspergillus niger (mold) and Diplodia theobroma cacao (color-changing fungus), and the control efficacy E was used to characterize it. The test results are shown in Table 1 below.

[0070] E=(1-D1 / D0)*100%; wherein, 1. Control efficacy, %; D1-average infection value of test samples; D0-average infection value of untreated control samples.

[0071] Table 1 Test results of the anti-mildew performance of comb handles Test Group Mold control effectiveness (%) Effect of preventing and controlling discoloration bacteria (%) Example 1 95 89 Example 2 96 90 Example 3 98 93 Example 4 97 92 Example 5 96 91 Comparative Example 1 80 75 Comparative Example 2 85 80 Comparative Example 3 86 82 Comparative Example 4 0 0 It can be seen from the above results that the comb handle prepared by the present invention has good antibacterial and anti-mildew effects and can extend its service life.

[0072] Performance Test 2: The mechanical properties of the degradable plastic comb teeth of Examples 1-5 and Comparative Examples 5-7 were tested with reference to GB / T-1040.1-2006. The test results are shown in Table 2: Table 2 Mechanical properties of biodegradable plastic comb teeth Test Group Tensile strength (MPa) Elongation at break (%) Example 1 26.0 163 Example 2 26.2 165 Example 3 26.5 168 Example 4 26.3 166 Example 5 26.1 165 Comparative Example 5 13.5 112 Comparative Example 6 13.7 115 Comparative Example 7 6.8 80 Comparative Example 8 6.6 81 From the above results, it can be seen that the biodegradable plastic comb teeth prepared by the present invention have good mechanical properties, especially through the combination of modified starch and modified mannitol, the two have a synergistic effect, can further improve the mechanical properties, and are not easily damaged during use.

[0073] It should be noted that, for the above embodiments, for the sake of simplicity, they are all described as a series of action combinations, but those skilled in the art should know that the present invention is not limited by the described order of actions, because according to the present invention, some steps may be performed in other orders or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present invention.

[0074] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the scope of protection of the invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the present invention according to the circumstances without conflict, without making creative work, so as to obtain different other technical solutions that do not deviate from the concept of the present invention in essence, and these technical solutions also belong to the scope of protection of the present invention.

Claims

1. A split combined comb, characterized in that: The utility model comprises a comb handle and comb teeth, wherein the comb handle and the comb teeth are detachably connected, the comb handle is made of bamboo, and the comb teeth are made of degradable plastic.

2. The split combined comb according to claim 1, characterized in that: A clamping groove which is clamped with the comb handle is arranged on the back side of the comb teeth.

3. The processing method of the split combined comb according to claim 1 or 2, characterized in that: The steps include: a. Making the comb handle: Cut bamboo into designed size; The cut bamboo is shaped once by a milling cutter, and then polished to obtain a comb handle; b. Making comb teeth: Prepare biodegradable plastic raw materials; The raw materials are mixed and added into an injection molding device, and the comb teeth are obtained by injection molding.

4. The processing method of the split combined comb according to claim 3, characterized in that: The polished comb handle is subjected to antibacterial treatment, and the antibacterial treatment comprises the following steps: Use ethanol vacuum ultrasound to clean the polished comb handle for 20-30 minutes to remove impurities; Then, water vapor is introduced to expand the pores, and after cooling, the pores are dried at 40-45°C, and then irradiated with ultraviolet light for 5-10 minutes; Put the comb handle irradiated by ultraviolet light into a culture vessel and inject the cellulose fermentation liquid of Acetobacter xylinum into it, wrap it up, and culture it at 28-30℃ for 2-4 days, then take out the comb handle and wash it with deionized water for 2-3 times; The cleaned comb handle is immersed in the antibacterial finishing liquid, vacuumed to below 0.01MPa, ultrasonically treated for 10-20min, and after immersion for 3-5h, the bamboo material is taken out and irradiated with a dose of 10-20kGy. Finally, the impurities on the surface are cleaned with deionized water, and dried at 50-60℃ to obtain a finished comb handle.

5. The processing method of the split combined comb according to claim 4, characterized in that: The preparation method of the antibacterial finishing liquid is as follows: by weight, 10-20 parts of chitosan and 8-12 parts of soy protein isolate are taken, the soy protein isolate is added to 40-50 parts of deionized water, then 20-30 parts of ethanol are added, stirred for 30-40 minutes, then chitosan is added, and stirred for 30-50 minutes to obtain the antibacterial finishing liquid.

6. The processing method of the split combined comb according to claim 3, characterized in that: The degradable plastic comprises the following raw materials in parts by weight: 80-100 parts of polypropylene resin, 30-40 parts of polylactic acid, 25-35 parts of modified starch, 6-10 parts of modified mannitol, 1-2 parts of lubricant, and 0.5-1.5 parts of antistatic agent.

7. The processing method of the split combined comb according to claim 6, characterized in that: The preparation method of the modified starch is as follows: 20-30 parts of corn starch are taken by weight, spread in a thickness of 0.2-0.5 cm, and irradiated by electron beam with an irradiation dose of 80-100 kGy, and then 1-3 parts of sodium dodecyl sulfate and 60-70 parts of deionized water are added, stirred for reaction for 1.5-2 hours, and then 6-10 parts of maleic anhydride are added and mixed evenly, and stirred for reaction in a constant temperature water bath of 60-70° C. for 60-80 minutes, and then filtered and spray-dried to obtain the modified starch.

8. The method for processing a split combined comb according to claim 6, characterized in that: The preparation method of the modified mannitol is as follows: 5-10 parts of mannitol are taken by weight, dissolved in 70-80 parts of deionized water, 1 mol / L hydrochloric acid aqueous solution is added dropwise under stirring until the pH value is 3-5, and stirring is continued for 1-2 hours; then 3-5 parts of dopamine hydrochloride are added, and the reaction is carried out in the dark under nitrogen protection for 1-3 hours, and the solution after the reaction is dialyzed in deionized water and freeze-dried to obtain the modified mannitol.

9. The method for processing a split combined comb according to claim 6, characterized in that: The lubricant includes one or more combinations of pentaerythritol, butyl stearate, and stearyl alcohol.

10. The method for processing a split combined comb according to claim 6, characterized in that: The antistatic agent includes at least one of stearyl trimethyl ammonium chloride and stearyl dimethyl amyl ammonium chloride.

Images