Traceable polymer with anti-counterfeiting tracing function

Abstract

The invention relates to the technical field of modified high-molecular polymer resin, in particular to a traceable polymer with an anti-counterfeiting tracing function, which is prepared from the following raw materials: polymer resin, a PCR (Polymerase Chain Reaction) material, a tracing auxiliary agent, an antioxidant, a lubricating agent, a toughening agent and a flow promoter, a preparation process of the polymer with the anti-counterfeiting tracing function comprises the following steps: putting the polymer resin, the PCR material, the tracing auxiliary agent, the antioxidant, the lubricant, the flexibilizer and the flow promoter into a high-speed stirrer, uniformly mixing, then putting into a double-screw extruder, and carrying out melt extrusion granulation, according to the invention, the low-cost PCR material is creatively combined with the functional tracing aid, the anti-counterfeiting tracing through a simple means is realized on the premise of not obviously influencing the material performance, and the method has the advantages of environmental protection, economy and practicability, and is suitable for multiple fields of packaging, electronics, automobiles and the like.

Description

Technical Field

[0001] This invention relates to the field of modified polymer resin technology, and in particular to a traceable polymer with anti-counterfeiting tracking function. Background Technology

[0002] The plastics modification industry is characterized by a wide variety of products, numerous and widely distributed production plants. Due to the high replicability of polymer material formulations, product quality varies greatly, with counterfeit and substandard products flooding the market and severely damaging the interests of manufacturers of high-quality products. Currently, methods for identifying counterfeit products, such as infrared spectroscopy and nuclear magnetic resonance spectroscopy, require expensive instruments and are complex, making them unsuitable for ordinary plastic factories. Therefore, developing simple, practical, and low-cost tracer-based anti-counterfeiting methods is an urgent problem to be solved.

[0003] Current mainstream anti-counterfeiting and traceability technologies for products on the market have significant limitations:

[0004] The testing methods are complex and costly: Traditional material identification methods (such as infrared spectroscopy, nuclear magnetic resonance spectroscopy comparison, thermogravimetric analysis, etc.) rely on specialized laboratory equipment, with a single instrument costing hundreds of thousands of yuan. Furthermore, they require professional technicians to operate, and the testing cycle can take several hours or even days, making it difficult to meet the needs of real-time monitoring of production lines, rapid sampling by distributors, or anti-counterfeiting efforts in the end market. For small and medium-sized enterprises with annual revenue of less than ten million yuan, such technologies are almost impractical.

[0005] Anti-counterfeiting labels are easily counterfeited: physical anti-counterfeiting methods (such as laser marking and special color masterbatches) are easily cracked by counterfeiters due to their low technical threshold; although chemical anti-counterfeiting has a certain degree of concealment, traditional chemical tracers (such as specific dyes and stabilizers) often have poor compatibility with the substrate, which can easily lead to a decline in the mechanical properties of the material, or failure due to high-temperature decomposition during processing.

[0006] The application of recycled materials and anti-counterfeiting functions are incompatible: The required proportion of PCR (post-consumer recycled) materials in plastic products is increasing year by year (some fields have already mandated a PCR content of ≥30%). However, recycled materials suffer from problems such as complex sources, high impurity content, and performance degradation due to molecular chain breakage. This not only affects the mechanical properties of the material itself but also interferes with the stability of traditional tracers (e.g., fluorescent tracers are easily weakened in recycled materials due to impurities), leading to the failure of anti-counterfeiting functions.

[0007] Furthermore, the selection of tracer additives in existing technologies presents an irreconcilable contradiction: pursuing high recognition requires increasing the amount of tracer added or selecting highly active ingredients, but this significantly increases material costs and may lead to abnormal material appearance (such as discoloration or turbidity); reducing the amount added, on the other hand, reduces anti-counterfeiting reliability due to insufficient signal strength. Simultaneously, issues such as the interfacial compatibility between the tracer and the polymer substrate, and the thermal stability during processing, also make it difficult for existing solutions to achieve a balance between "anti-counterfeiting effect" and "material performance."

[0008] Therefore, developing an anti-counterfeiting tracer technology that is compatible with PCR materials, low in cost, convenient to detect, and has minimal impact on material performance is a key breakthrough in solving the counterfeiting problem in the plastics industry and promoting the efficient utilization of recycled materials. It has significant industrial value and environmental significance. Summary of the Invention

[0009] In view of this, the purpose of this invention is to propose a traceable polymer with anti-counterfeiting tracking function to achieve simple and convenient anti-counterfeiting tracking and reduce the impact on material properties.

[0010] To achieve the above objectives, the present invention provides a traceable polymer with anti-counterfeiting tracking function.

[0011] A traceable polymer with anti-counterfeiting traceability function includes the following raw materials: polymer resin, PCR material, tracer, antioxidant, lubricant, toughening agent and flow aid.

[0012] Preferably, the mass ratio of the polymer resin, PCR material, tracer, antioxidant, lubricant, toughening agent and flow aid is 30-60:30-60:0.1-1:0.2-0.5:0.2-0.5:1-5:0.7-1.5.

[0013] Preferably, the polymer resin is one or a combination of any two of ABS resin, PC resin, HIPS resin, PP resin, PMMA resin and HDPE resin, and when the polymer resin is a blend of two compositions, the difference in melt index between the two resins is ≤5g / 10min (230℃ / 2.16kg), providing a basic framework for the material. The PCR material is a recycled material of the corresponding polymer resin, which can reduce costs and improve resource utilization.

[0014] The polymer resin used in this invention serves as the basic framework of the material, providing the polymer with fundamental mechanical properties (such as tensile strength, flexural modulus, etc.) and processing performance. One or two of ABS resin, PC resin, HIPS resin, PP resin, PMMA resin, and HDPE resin can be selected, and when it is a blend, the difference in melt index between the two resins is ≤5 g / 10 min (230℃ / 2.16 kg) to ensure the compatibility and stability of the blend system.

[0015] Preferably, the PCR material is pretreated before use. The pretreatment process is as follows: first, impurities are removed by density gradient centrifugation to achieve a final purity of ≥99%, and then the surface is modified by plasma at a power of 300-500W for 5-10 minutes to improve compatibility with polymer resin.

[0016] The PCR material used in this invention is a recycled material corresponding to the polymer resin, which can reduce raw material costs, improve resource utilization, and is environmentally friendly. After pretreatment (density gradient centrifugation, where the density gradient centrifugation method uses a sucrose solution as the medium, with a density gradient of 1.0-1.5 g / cm³), the PCR material is recycled. 3 Impurities such as metals and dust in PCR materials are separated, and the purity is increased to over 99%. Then, the surface is modified by 300-500W plasma for 5-10 minutes. During the plasma treatment, Ar / O2 mixed gas is used to etch the surface of the PCR material (introducing active groups such as hydroxyl and carboxyl groups), which can improve the compatibility with polymer resin and reduce the adverse effects on material performance.

[0017] Preferably, the tracer is the key to achieving anti-counterfeiting traceability, including fluorescein, phosphor, carbon nanotubes, C14 tracer, glass fiber and glass microbeads, which can be identified by handheld fluorescence detectors and radioactivity detectors.

[0018] The tracer additives used in this invention are the core components for achieving anti-counterfeiting traceability. They can be identified through simple means (such as handheld fluorescence detectors, radioactivity detectors, magnifying glasses, and the sense of smell), thereby distinguishing genuine products from counterfeits. These include fluorescein, fluorescent powder, carbon nanotubes, C14 tracers, glass fibers, glass microbeads, and fragrances. Different types of tracer additives correspond to different identification methods, ensuring the effectiveness of anti-counterfeiting. When a composite tracer system is designed, it can break through the single tracer mode, employing "dual or triple" tracer combinations to simultaneously meet 2-3 detection conditions, further increasing the difficulty of counterfeiting and solving the problem of single tracers being easily cracked, while also reducing the adverse effects on performance caused by the introduction of tracer additives.

[0019] Preferably, the antioxidant is obtained by mixing two of antioxidants 1076, 168, 1010 and 1098 in a mass ratio of 1:2-4, which can delay the aging of materials. The amount of antioxidant added is dynamically adjusted according to the aging degree of PCR materials. For every 10% increase in the aging degree of PCR materials, the total amount of antioxidant increases by 0.05%.

[0020] The antioxidant provided by this invention is a mixture of one or two of antioxidants 1076, 168, 1010, and 1098 in a mass ratio of 1:2-4. It can delay the oxidative aging of materials during processing and use, extending the material's service life. The amount added is dynamically adjusted according to the aging degree of the PCR material (for every 10% increase in the aging degree of the PCR material, the total amount of antioxidant increases by 0.05%), which can specifically address the aging problems that may arise from PCR materials.

[0021] Preferably, the lubricant is either EBS or PETS, which can improve processing fluidity.

[0022] The lubricant provided by this invention is selected from EBS, PETS, etc., which can improve the flowability of materials during processing, reduce friction between materials and equipment, make the processing process smoother, and improve production efficiency.

[0023] Preferably, the toughening agent is selected from any one of high-polymer powder, POE, MBS, SBS and SIS, with a particle size of 0.1-1μm, and the refractive index difference between the toughening agent and the polymer resin is ≤0.02, which is used to improve the toughness of the material while avoiding affecting the transparency of the material.

[0024] The toughening agent provided by this invention is selected from high-rubber powder, POE, etc., with a particle size of 0.1-1μm and a refractive index difference of ≤0.02 with the polymer resin. It can improve the toughness of the material (such as notched impact strength) while avoiding significant impact on the transparency of the material.

[0025] Preferably, the flow aid is any one of white mineral oil, molecular weight regulator, plasticizer DOP, and plasticizer BOP, to further optimize processing performance.

[0026] The flow aids provided by this invention are selected from white mineral oil, DOP, etc., which can further optimize the processing performance of materials, ensure good flowability of materials during melt extrusion, and guarantee the stability of product quality.

[0027] A method for preparing a traceable polymer with anti-counterfeiting traceability function includes the following steps:

[0028] The polymer resin, PCR material, tracer, antioxidant, lubricant, toughening agent and flow aid are mixed evenly in a high-speed mixer and then fed into a twin-screw extruder for melt extrusion granulation.

[0029] Preferably, the twin-screw extruder has 10 temperature zones, the temperature is adjusted according to the type of polymer, and the screw speed is 400-600 rpm.

[0030] This invention employs a high-speed mixer to mix polymer resin, PCR material, tracer, antioxidant, lubricant, toughening agent, and flow aid evenly, ensuring that each component can fully function in subsequent processing and guaranteeing the uniformity of product performance.

[0031] This invention employs a twin-screw extruder for melt extrusion granulation. The twin-screw extruder has 10 temperature zones, allowing temperature adjustment based on the polymer type, ensuring thorough melting and mixing of the materials and promoting compatibility between components. The screw speed is controlled at 400-600 rpm to provide suitable shear force, ensuring good plasticization of the material while avoiding excessive shearing that could damage the properties of tracer additives and other components. The final product is a uniform granular product, facilitating subsequent processing and use.

[0032] The beneficial effects of this invention are:

[0033] This invention provides a traceable polymer with anti-counterfeiting tracking function. The traceability of the polymer with anti-counterfeiting tracking function provided by this invention is simple: the tracking agent can be identified with a simple instrument, the operation is convenient, and it is suitable for use in ordinary factories.

[0034] The traceable polymer with anti-counterfeiting tracking function provided by this invention is low in cost: the function can be achieved by adding a small amount of tracking agent, and the use of PCR materials reduces the cost of raw materials, resulting in high cost performance.

[0035] The traceable polymer with anti-counterfeiting tracking function provided by this invention has stable performance: the selection and proportion design of tracking agents and other additives are reasonable, and it has little impact on the melt index, impact strength, tensile strength and other properties of the material, which can meet the needs of most fields. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments.

[0037] Example 1: A method for preparing a traceable polymer with anti-counterfeiting traceability function, comprising the following steps:

[0038] S1. Mix 47 parts ABS resin, 50 parts ABS PCR material, 0.1 parts antioxidant 1076, 0.3 parts antioxidant 168, 0.3 parts EBS, 2 parts high-polymer powder, 1 part white oil, and 0.2 parts C 14Tracer. The above-mentioned formulation components are mixed evenly in a high-speed mixer; the mixed material is then fed into a twin-screw extruder for melt extrusion and granulation. The twin-screw extruder includes ten temperature zones: zones 1-2 have a process temperature of 180-200℃, zones 3-6 have a temperature of 200-220℃, and zones 7-10 have a temperature of 200-220℃; the extruder screw speed is 400-600 RPM. Through this production process, a traceable polymer material with anti-counterfeiting traceability function is prepared.

[0039] Example 2:

[0040] Weigh out 45 parts HIPS resin, 50 parts HIPS PCR material, 0.1 parts antioxidant 1076, 0.3 parts antioxidant 168, 0.3 parts EBS, 4 parts SIS resin, 1 part white oil, and 0.2 parts fluorite. Mix the above components thoroughly in a high-speed mixer. Then, feed the mixture into a twin-screw extruder for melt extrusion and granulation. The twin-screw extruder has ten temperature zones: zones 1-2 have a process temperature of 160-180℃, zones 3-6 have a temperature of 180-200℃, and zones 7-10 have a temperature of 180-200℃. The screw speed is 400-600 RPM. Through this production process, a traceable polymer material with anti-counterfeiting tracking function is prepared.

[0041] Example 3:

[0042] Weigh out 45 parts PP resin, 50 parts PP PCR material, 0.1 parts antioxidant 1010, 0.3 parts antioxidant 168, 0.3 parts silicone powder, 4 parts POE, 1 part white oil, and 0.2 parts fluorescent powder. Mix the above components thoroughly in a high-speed mixer. Then, feed the mixture into a twin-screw extruder for melt extrusion and granulation. The twin-screw extruder has ten temperature zones: zones 1-2 have a process temperature of 150-170℃, zones 3-6 have a temperature of 160-180℃, and zones 7-10 have a temperature of 160-180℃. The screw speed is 400-600 RPM. Through this production process, a traceable polymer material with anti-counterfeiting tracking function is prepared.

[0043] Example 4:

[0044] Weigh out 45 parts PC resin, 50 parts PC PCR material, 0.1 parts antioxidant 1076, 0.3 parts antioxidant 168, 0.3 parts PETS, 4 parts MBS, and 0.5 parts glass microspheres. Mix the above components thoroughly in a high-speed mixer. Then, feed the mixture into a twin-screw extruder for melt extrusion and granulation. The twin-screw extruder has ten temperature zones: zones 1-2 have a process temperature of 240-260℃, zones 3-6 have a temperature of 250-270℃, and zones 7-10 have a temperature of 250-270℃. The screw speed is 400-600 RPM. Through this production process, a traceable polymer material with anti-counterfeiting tracking function is prepared.

[0045] Example 5:

[0046] Weigh out 45 parts HIPS resin, 50 parts HIPS PCR material, 0.1 parts antioxidant 1076, 0.3 parts antioxidant 168, 0.3 parts EBS, 4 parts SIS resin, 1 part white oil, and 0.2 parts fragrance. Mix the above components thoroughly in a high-speed mixer. Then, feed the mixture into a twin-screw extruder for melt extrusion and granulation. The twin-screw extruder has ten temperature zones: zones 1-2 have a process temperature of 160-180℃, zones 3-6 have a temperature of 180-200℃, and zones 7-10 have a temperature of 180-200℃. The screw speed is 400-600 RPM. Through this production process, a traceable polymer material with anti-counterfeiting tracking function is prepared.

[0047] Example 6:

[0048] Weigh out 30 parts of PP resin, 30 parts of PP PCR material, 0.1 parts of fluorescent stone, 0.3 parts of carbon nanotubes, 0.4 parts of glass microspheres, 0.2 parts of antioxidant, 0.2 parts of EBS, 1 part of high-polymer powder with a particle size of 0.1-1μm, and 0.7 parts of white mineral oil. Mix them evenly in a high-speed mixer and then feed them into a twin-screw extruder for melt extrusion granulation. The twin-screw extruder includes ten temperature zones. The process temperature of zones 1-2 of the extruder barrel is 180-200℃, the temperature of zones 3-6 is 200-220℃, the temperature of zones 7-10 is 200-220℃, and the screw speed of the extruder is 400-600RPM. Through the above production process, a traceable polymer material with anti-counterfeiting tracking function is prepared. The antioxidant is obtained by mixing antioxidant 1076 and antioxidant 168 in a mass ratio of 1:2. The PP PCR material is pretreated before use: first, impurities are removed by density gradient centrifugation to achieve a final purity of ≥99%, and then the surface is modified by plasma at 300W for 5 minutes to improve compatibility with polymer resin.

[0049] Example 7:

[0050] Weigh out 60 parts of ABS resin and PC resin, 60 parts of ABS PCR material and PC PCR material, 0.3 parts fluorite, 0.5 parts carbon nanotubes, 0.2 parts glass microspheres, 0.5 parts antioxidant, 0.5 parts EBS, 5 parts high-polymer powder with a particle size of 0.1-1μm, and 1.5 parts white mineral oil were mixed evenly in a high-speed mixer and then fed into a twin-screw extruder for melt extrusion granulation. The twin-screw extruder has ten temperature zones: zones 1-2 have a process temperature of 210-230℃, zones 3-6 have a temperature of 230-250℃, and zones 7-10 have a temperature of 250-270℃. The screw speed is 400-600 RPM. The melt index difference between ABS resin and PC resin is ≤5g / 10min (230℃ / 2.16kg). Through this production process, a traceable polymer material with anti-counterfeiting tracking function is prepared. The antioxidant is obtained by mixing antioxidant 1076 and antioxidant 168 at a mass ratio of 1:2-4. Before use, PCR materials and PC PCR materials are pretreated: first, impurities are removed by density gradient centrifugation to achieve a final purity of ≥99%, and then the surface is modified by plasma at 500W for 10 minutes to improve compatibility with polymer resin.

[0051] Comparative Example 1:

[0052] Weigh out 47 parts ABS resin, 50 parts ABS PCR material, 0.1 parts antioxidant 1076, 0.3 parts antioxidant 168, 0.3 parts EBS, 2 parts high-polymer powder, and 1 part white oil. Mix the above-mentioned components thoroughly in a high-speed mixer. Then, feed the mixture into a twin-screw extruder for melt extrusion and granulation. The twin-screw extruder has ten temperature zones: zones 1-2 have a process temperature of 180-200℃, zones 3-6 have a temperature of 200-220℃, and zones 7-10 have a temperature of 200-220℃. The screw speed is 400-600 RPM. Through this production process, a traceable polymer material with anti-counterfeiting tracking function is prepared.

[0053] Comparative Example 2:

[0054] Weigh out 45 parts HIPS resin, 50 parts HIPS PCR material, 0.1 parts antioxidant 1076, 0.3 parts antioxidant 168, 0.3 parts EBS, 4 parts SIS resin, and 1 part white oil. Mix the above components thoroughly in a high-speed mixer. Then, feed the mixture into a twin-screw extruder for melt extrusion and granulation. The twin-screw extruder has ten temperature zones: zones 1-2 have a process temperature of 160-180℃, zones 3-6 have a temperature of 180-200℃, and zones 7-10 have a temperature of 180-200℃. The screw speed is 400-600 RPM. Through this production process, a traceable polymer material with anti-counterfeiting tracking function is prepared.

[0055] The products prepared in Examples 1-5 and Comparative Examples 1-2 were subjected to performance tests. The melt flow index, notched impact strength, tensile strength, and flexural modulus of the samples were tested according to ASTM standards. The anti-counterfeiting effect was tested using a simple instrument. The test results are shown in Tables 1 and 2 below:

[0056] Table 1. Performance test statistics of melt flow index and notched impact strength.

[0057] Test items Melt index / g / 10min Notched impact strength / J / M Example 1 20 154 Example 2 5 121 Example 3 9 295 Example 4 14 590 Example 5 6.1 119 Example 6 16 280 Example 7 18 165 Comparison Implementation 1 18 167 Comparison Implementation 2 4.3 125

[0058] Table 2. Performance test statistics of tensile strength and flexural modulus.

[0059] Test items Tensile strength / MPa Flexural modulus / MPa Anti-counterfeiting effect Example 1 37 2050 excellent Example 2 28 1700 excellent Example 3 18 1045 excellent Example 4 60 2240 better Example 5 27 1681 better Example 6 20 1120 Excellent Example 7 42 2300 Excellent Comparative Example 1 37 2010 Poor Comparative Example 2 27 1680 Poor

[0060] Data Analysis:

[0061] As can be seen from the table above, Examples 1-5 used tracer agents of different methods in different types of polymer substrates. The physical and mechanical properties of the products are outstanding, meeting the requirements of most fields. This indicates that the tracer agents have little impact on the mechanical properties of the materials, but all exhibit good tracer and anti-counterfeiting effects. Example 1 uses a simple radioactivity testing instrument to detect the presence of C in the material. 14 The radioactivity of the material was measured. Examples 2 and 3 used handheld instruments to test fluorescence content, which can detect the specific fluorescence content in our material. The instruments are simple, practical and accurate. Example 4 used a simple handheld magnifying glass to observe the cross-section of the material, which can reveal the presence of glass microbeads and distinguish materials from different companies. Example 5 used a special type of fragrance with a unique aroma that is difficult for other companies to imitate. Therefore, it can be identified and distinguished by simple smell.

[0062] In Example 6, PP resin and PP PCR material (pretreated) were compounded, and a ternary tracer system of fluorescent stone, carbon nanotubes and glass microbeads was added. Through triple verification of "fluorescence detection + microscopic observation + nanotube characteristic signal", the anti-counterfeiting effect reached "excellent"; mechanical properties: notched impact strength 280 J / M (better than pure PP system), tensile strength 20 MPa, flexural modulus 1120 MPa, meeting the toughness requirements of automotive interior, packaging and other fields.

[0063] In Example 7, ABS / PC blended resin (melt index difference ≤ 5 g / 10 min) was used in combination with the corresponding PCR material. The tracer system was a combination of fluorite, carbon nanotubes and glass microbeads. It was compatible with a high proportion of PCR material (60%) while maintaining a tensile strength of 42 MPa and a flexural modulus of 2300 MPa, making it suitable for high-end applications such as electronic device casings. The plasma-modified PCR material had excellent compatibility with the substrate, no obvious delamination, and a light transmittance (for the PC component) of 82%.

[0064] Anti-counterfeiting effect evaluation: Because Examples 6-7 adopt a multiple tracer system, they need to be verified by 2-3 detection methods at the same time (such as "fluorescent signal + glass microbead morphology"), making them significantly more difficult to counterfeit than a single tracer system. Therefore, the anti-counterfeiting level is upgraded to "excellent".

[0065] Neither Comparative Example 1 nor Comparative Example 2 added any anti-counterfeiting tracer. The material properties were similar to those of the corresponding Examples 1 and 2. However, the lack of tracer anti-counterfeiting additives meant that various simple handheld instruments could not identify or distinguish the products, and therefore the products did not have anti-counterfeiting tracer functions.

[0066] The polymer resin used in this invention serves as the basic framework of the material, providing the polymer with fundamental mechanical properties (such as tensile strength, flexural modulus, etc.) and processing performance. One or two of ABS resin, PC resin, HIPS resin, PP resin, PMMA resin, and HDPE resin can be selected, and when it is a blend, the difference in melt index between the two resins is ≤5 g / 10 min (230℃ / 2.16 kg) to ensure the compatibility and stability of the blend system.

[0067] The PCR material used in this invention is a recycled material corresponding to the polymer resin, which can reduce raw material costs, improve resource utilization, and is environmentally friendly. After pretreatment (density gradient centrifugation, where the density gradient centrifugation method uses a sucrose solution as the medium, with a density gradient of 1.0-1.5 g / cm³), the PCR material is recycled. 3Impurities such as metals and dust in PCR materials are separated, and the purity is increased to over 99%. Then, the surface is modified by 300-500W plasma for 5-10 minutes. During the plasma treatment, Ar / O2 mixed gas is used to etch the surface of the PCR material (introducing active groups such as hydroxyl and carboxyl groups), which can improve the compatibility with polymer resin and reduce the adverse effects on material performance.

[0068] The tracer additives used in this invention are the core components for achieving anti-counterfeiting traceability. They can be identified through simple means (such as handheld fluorescence detectors, radioactivity detectors, magnifying glasses, and the sense of smell), thereby distinguishing genuine products from counterfeits. These include tracers such as fluorescent stones, fluorescent powders, carbon nanotubes, C14 tracers, glass fibers, glass microbeads, and fragrances. Different types of tracer additives correspond to different identification methods, ensuring the effectiveness of anti-counterfeiting. When a composite tracer system is designed, it can break through the single tracer mode, employing "dual or triple" tracer combinations to simultaneously meet 2-3 detection conditions, further increasing the difficulty of counterfeiting and solving the problem of single tracers being easily cracked.

[0069] The antioxidant provided by this invention is a mixture of one or two of antioxidants 1076, 168, 1010, and 1098 in a mass ratio of 1:2-4. It can delay the oxidative aging of materials during processing and use, extending the material's service life. The amount added is dynamically adjusted according to the aging degree of the PCR material (for every 10% increase in the aging degree of the PCR material, the total amount of antioxidant increases by 0.05%), which can specifically address the aging problems that may arise from PCR materials.

[0070] The lubricant provided by this invention is selected from EBS, PETS, etc., which can improve the flowability of materials during processing, reduce friction between materials and equipment, make the processing process smoother, and improve production efficiency.

[0071] The toughening agent provided by this invention is selected from high-rubber powder, POE, etc., with a particle size of 0.1-1μm and a refractive index difference of ≤0.02 with the polymer resin. It can improve the toughness of the material (such as notched impact strength) while avoiding significant impact on the transparency of the material.

[0072] The flow aids provided by this invention are selected from white mineral oil, DOP, etc., which can further optimize the processing performance of materials, ensure good flowability of materials during melt extrusion, and guarantee the stability of product quality.

[0073] This invention employs a high-speed mixer to mix polymer resin, PCR material, tracer, antioxidant, lubricant, toughening agent, and flow aid evenly, ensuring that each component can fully function in subsequent processing and guaranteeing the uniformity of product performance.

[0074] This invention employs a twin-screw extruder for melt extrusion granulation. The twin-screw extruder has 10 temperature zones, allowing temperature adjustment based on the polymer type, ensuring thorough melting and mixing of the materials and promoting compatibility between components. The screw speed is controlled at 400-600 rpm to provide suitable shear force, ensuring good plasticization of the material while avoiding excessive shearing that could damage the properties of tracer additives and other components. The final product is a uniform granular product, facilitating subsequent processing and use.

[0075] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the invention is limited to these examples; within the framework of the invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity.

[0076] This invention is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A traceable polymer with anti-counterfeiting tracking function, characterized in that, It includes the following raw materials: polymer resin, PCR material, tracer, antioxidant, lubricant, toughening agent and flow aid.

2. The traceable polymer with anti-counterfeiting tracking function according to claim 1, characterized in that, The polymer resin is any one or any two of ABS resin, PC resin, HIPS resin, PP resin, PMMA resin and HDPE resin.

3. The traceable polymer with anti-counterfeiting tracking function according to claim 1, characterized in that, The PCR material is a recycled material corresponding to the polymer resin.

4. The traceable polymer with anti-counterfeiting tracking function according to claim 1, characterized in that, The tracer is a fluorescent stone, phosphor, carbon nanotube, or C. 14 Any one of tracer, glass fiber, and glass microspheres.

5. The traceable polymer with anti-counterfeiting tracking function according to claim 1, characterized in that, The antioxidant is obtained by mixing any two of antioxidants 1076, antioxidant 168, antioxidant 1010 and antioxidant 1098 in a mass ratio of 1:2-4.

6. The traceable polymer with anti-counterfeiting tracking function according to claim 1, characterized in that, The lubricant is any one of EBS, PETS, silicone oil, liquid paraffin, E wax, microcrystalline wax, silicone powder, silicone masterbatch, and TAF.

7. The traceable polymer with anti-counterfeiting tracking function according to claim 1, characterized in that, The toughening agent is any one of high-polymer powder, POE, MBS, SBS and SIS.

8. The traceable polymer with anti-counterfeiting tracking function according to claim 1, characterized in that, The flow aid is any one of white mineral oil, molecular weight regulator, plasticizer DOP, and plasticizer BOP.

9. A traceable polymer with anti-counterfeiting tracking function, characterized in that, The preparation process of the traceable polymer with anti-counterfeiting traceability function is as follows: The polymer resin, PCR material, tracer, antioxidant, lubricant, toughening agent and flow aid are put into a high-speed mixer and mixed evenly, and then fed into a twin-screw extruder for melt extrusion granulation.

10. The traceable polymer with anti-counterfeiting tracking function according to claim 9, characterized in that, The twin-screw extruder includes ten temperature zones, and the screw speed of the twin-screw extruder is 400-600 rpm.