Low-cost high-toughness ABS (acrylonitrile butadiene styrene) / PA66 (polyamide 66) alloy material and preparation method thereof

Abstract

The invention discloses a low-cost high-toughness ABS (acrylonitrile butadiene styrene) / PA66 (polyamide 66) alloy material and a preparation method thereof, and the low-cost high-toughness ABS / PA66 alloy material is prepared from the following components: 5 to 85 parts of regenerated ABS resin, 0 to 70 parts of ABS resin, 5 to 60 parts of PA66 resin, 3 to 8 parts of compatilizer, 3 to 8 parts of flexibilizer, 0.1 to 0.8 part of antioxidant and 0.2 to 0.9 part of lubricant. Wherein the regenerated ABS resin is the regenerated ABS resin subjected to tackifying treatment, and the ABS resin is the ABS resin subjected to toughening treatment. The low-cost and high-toughness ABS / PA66 alloy material prepared by the invention has better toughness, can overcome the technical problem that the existing recycled plastics after consumption have lower toughness and cannot meet practical requirements, and meanwhile, can realize resource reutilization and effectively reduce energy loss.

Description

Technical Field

[0001] The present invention relates to the technical field of polymer materials, and in particular to a low-cost and high-toughness ABS / PA66 alloy material and a preparation method thereof. Background Art

[0002] Plastics have become an indispensable material in daily life due to their light weight, durability, beauty and low price. However, it is precisely these advantages of plastics that have also led to the generation of a large amount of plastic waste. Post-consumer recycled (PCR) plastics have become one of the important directions to reduce plastic environmental pollution and help the energy and chemical industry move towards "carbon neutrality". The discarded plastics are collected from the recycling stream and then sorted, cleaned and granulated by the mechanical recycling system to produce new plastic particles. The new plastic particles have the same structure as the plastics before recycling, but the overall performance will be reduced.

[0003] At present, a large number of PCR materials are only recycled from low-end waste plastics, which has low technical content and leads to unstable product quality. It should be pointed out that due to the thermal history of PCR materials, the molecular weight of the base material is reduced. Direct use will not meet practical needs due to the low toughness of the material.

[0004] Therefore, the prior art still needs to be improved and developed. Summary of the invention

[0005] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a low-cost and high-toughness ABS / PA66 alloy material and a preparation method thereof, aiming to solve the technical problem that the existing post-consumer recycled plastics have low toughness and cannot meet practical needs.

[0006] The technical solution adopted by the present invention to solve the above technical problems is as follows:

[0007] In a first aspect, a low-cost and high-toughness ABS / PA66 alloy material is provided, which includes the following components:

[0008] Recycled ABS resin 5-85 parts, ABS resin 0-70 parts, PA66 resin 5-60 parts, compatibilizer 3-8 parts, toughening agent 3-8 parts, antioxidant 0.1-0.8 parts, lubricant 0.2-0.9 parts;

[0009] Wherein, the recycled ABS resin is a recycled ABS resin that has been subjected to a tackifying treatment, and the ABS resin is an ABS resin that has been subjected to a toughening treatment.

[0010] The low-cost and high-toughness ABS / PA66 alloy material includes the following components:

[0011] Recycled ABS resin 10-60 parts, ABS resin 20-60 parts, PA66 resin 5-60 parts, compatibilizer 3-8 parts, toughening agent 3-8 parts, antioxidant 0.1-0.8 parts, lubricant 0.2-0.9 parts;

[0012] Wherein, the recycled ABS resin is a recycled ABS resin that has been subjected to a tackifying treatment, and the ABS resin is an ABS resin that has been subjected to a toughening treatment.

[0013] The low-cost and high-toughness ABS / PA66 alloy material, wherein the recycled ABS is treated with a chain extender to increase viscosity, wherein the chain extender is a hydroxyl chain extender, and the mass ratio of the chain extender to the recycled ABS is (0.1-1.0):100.

[0014] The low-cost and high-toughness ABS / PA66 alloy material, wherein the ABS resin is toughened by an auxiliary agent, wherein the auxiliary agent is at least one of maleic anhydride grafted styrene-ethylene-butadiene-styrene copolymer (SEBS-g-MAH), maleic anhydride grafted ethylene-propylene-non-conjugated diene copolymer (EPDM-g-MAH), maleic anhydride grafted ethylene-octene copolymer (POE-g-MAH), maleic anhydride grafted styrene-butadiene rubber (SBR-g-MAH), maleic anhydride grafted nitrile rubber (NBR-g-MAH), and maleic anhydride grafted thermoplastic polyurethane elastomer (TPU-g-MAH), and the mass ratio of the auxiliary agent to the ABS resin is (1-3):100.

[0015] The low-cost and high-toughness ABS / PA66 alloy material, wherein the melt index of the recycled ABS resin is 20-40g / 10min, the density is less than 1.06, and the impact strength is greater than 13KJ / m 2 .

[0016] The low-cost and high-toughness ABS / PA66 alloy material, wherein the melt index of the ABS resin is 15-35g / 10min, the density is 1.02-1.1, and the impact strength is greater than 18KJ / m 2 .

[0017] The low-cost and high-toughness ABS / PA66 alloy material, wherein the viscosity of the PA66 resin is 2.6-3.0 Pa·s. Preferably, the viscosity of the PA66 resin is 2.7 Pa·s.

[0018] The low-cost and high-toughness ABS / PA66 alloy material, wherein the compatibilizer is a styrene copolymer containing reactive groups; and / or

[0019] The toughening agent is at least one of maleic anhydride grafted ethylene-octene copolymer (POE-g-MAH) or styrene-butadiene rubber (SBR); and / or

[0020] The oxidant is at least one of antioxidant AT-10, antioxidant AT76, antioxidant 1098, antioxidant DLTP, and antioxidant 168; and / or

[0021] The lubricant is at least one of zinc stearate, ethylene bis stearamide and pentaerythritol stearate.

[0022] In a second aspect, a method for preparing a low-cost and high-toughness ABS / PA66 alloy material is provided, which comprises the steps of:

[0023] Providing raw materials, and mixing and high-speed stirring the raw materials to obtain a mixture;

[0024] The mixture is added into a twin-screw extruder, and granulated by melt extrusion to obtain the low-cost and high-toughness ABS / PA66 alloy material;

[0025] The raw materials include 5-85 parts of recycled ABS resin, 0-70 parts of ABS resin, 5-60 parts of PA66 resin, 3-8 parts of compatibilizer, 3-8 parts of toughening agent, 0.1-0.8 parts of antioxidant, and 0.2-0.9 parts of lubricant; the recycled ABS resin is recycled ABS resin after tackification treatment, and the ABS resin is ABS resin after toughening treatment.

[0026] The method for preparing the low-cost and high-toughness ABS / PA66 alloy material, wherein the temperature of the twin-screw extruder is set to: the head temperature is 240-260°C, the temperature of zone 1 is 190-220°C, the temperature of zone 2 is 240-260°C, the temperature of zone 3 is 240-260°C, the temperature of zone 4 is 240-260°C, the temperature of zone 5 is 230-250°C, the temperature of zone 6 is 230-250°C, the temperature of zone 7 is 220-250°C, and the temperature of zone 8 is 220-250°C; and / or

[0027] The speed of the twin-screw extruder is 250-350 r / min; and / or

[0028] The vacuum degree of the twin-screw extruder is greater than or equal to 0.06 MPa.

[0029] Beneficial effects: The low-cost and high-toughness ABS / PA66 alloy material prepared in the present invention, on the one hand, has better toughness, which can overcome the technical problem that the existing post-consumer recycled plastics have low toughness and cannot meet practical needs. On the other hand, it can realize the recycling of resources and effectively reduce energy loss. DETAILED DESCRIPTION

[0030] The present invention provides a low-cost high-toughness ABS / PA66 alloy material and a preparation method thereof. In order to make the purpose, technical solution and effect of the present invention clearer and more specific, the present invention is further described in detail below. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0031] PA (also known as nylon, polyamide) and ABS are two important plastic products. Nylon has excellent mechanical properties, heat resistance, wear resistance, chemical resistance and self-lubrication, and has a low friction coefficient, a certain degree of flame retardancy, and is easy to process. It is suitable for filling and reinforcing with glass fiber and other fillers to improve performance and expand the scope of application; ABS is a thermoplastic polymer material with high strength, good toughness, and easy processing. According to the different proportions of the three monomers, it can be applied to various plastic products. Its main advantage is its low price. Usually, PA and ABS are made into alloys to obtain new products with excellent performance. However, it is difficult to obtain products with excellent performance by making PA and recycled ABS into alloys, because the molecular weight of the substrate is reduced after the recycled ABS has undergone a processing heat history. Direct use will not meet practical needs due to the low toughness of the material.

[0032] In order to solve the technical problem that the existing post-consumer recycled plastics have low toughness and cannot meet practical needs, the present invention provides a low-cost and high-toughness ABS / PA66 alloy material, which includes the following components:

[0033] Recycled ABS resin 5-85 parts, ABS resin 0-70 parts, PA66 resin 5-60 parts, compatibilizer 3-8 parts, toughening agent 3-8 parts, antioxidant 0.1-0.8 parts, lubricant 0.2-0.9 parts;

[0034] The recycled ABS resin is a recycled ABS resin that has been subjected to a tackifying treatment, and the ABS resin is an ABS resin that has been subjected to a toughening treatment.

[0035] It should be noted that the recycled ABS resin used in the present application is a relatively pure recycled ABS resin purchased from outside, from which impurities have been sorted out and surface oil stain removal treatment (for example, de-plating treatment, de-painting treatment, etc.) has been performed.

[0036] In the present application, the raw materials are first processed, that is, the regenerated ABS resin is subjected to a tackification treatment to obtain a regenerated ABS resin after tackification treatment, and the ABS resin is subjected to a toughening treatment to obtain a toughened ABS resin, wherein the length of the molecular chain of the regenerated ABS resin is increased after the tackification treatment, so that the toughness of the regenerated ABS resin is also improved, and at the same time, the impact toughness of the ABS resin is also improved after the toughening treatment of the ABS resin. Thereafter, the regenerated ABS resin subjected to the tackification treatment and the toughened ABS resin are mixed with PA66 resin, a compatibilizer, a toughening agent, an antioxidant, and a lubricant to prepare a low-cost high-toughness ABS / PA66 alloy material. On the one hand, the prepared low-cost high-toughness ABS / PA66 alloy material has better toughness, which can overcome the technical problem that the toughness of existing post-consumer recycled plastics is low and cannot meet practical needs. On the other hand, it can realize the reuse of resources and effectively reduce energy loss.

[0037] Specifically, the content of each component in the low-cost high-toughness ABS / PA66 alloy material is: 5-85 parts of recycled ABS resin treated with tackification, 0-70 parts of ABS resin treated with tackification, 5-60 parts of PA66 resin, 3-8 parts of compatibilizer, 3-8 parts of toughening agent, 0.1-0.8 parts of antioxidant, and 0.2-0.9 parts of lubricant. It can be understood that in this application, when the content of toughened ABS resin is 0 parts, the main components of the prepared low-cost high-toughness ABS / PA66 alloy material are recycled ABS resin treated with tackification and PA66 resin, and when the content of toughened ABS resin is greater than 0 parts, the main components of the prepared low-cost high-toughness ABS / PA66 alloy material are recycled ABS resin treated with tackification, toughened ABS resin and PA66 resin.

[0038] Furthermore, the low-cost and high-toughness ABS / PA66 alloy material includes the following components:

[0039] Recycled ABS resin 10-60 parts, ABS resin 20-60 parts, PA66 resin 5-60 parts, compatibilizer 3-8 parts, toughening agent 3-8 parts, antioxidant 0.1-0.8 parts, lubricant 0.2-0.9 parts;

[0040] The recycled ABS resin is a recycled ABS resin that has been subjected to a tackifying treatment, and the ABS resin is an ABS resin that has been subjected to a toughening treatment.

[0041] In the present application, by mixing the regenerated ABS resin treated with tackification, the ABS resin treated with toughening, the PA66 resin, the compatibilizer, the toughening agent, the antioxidant and the lubricant, the low-cost high-toughness ABS / PA66 alloy material prepared has better performance. Understandably, the performance of the regenerated ABS resin is improved after the tackification treatment, but because the regenerated ABS resin is a recycled material, it is difficult to achieve the performance of the new ABS resin even after treatment, so the performance improvement of the regenerated ABS resin treated with tackification is limited. By adding the toughening ABS resin to the formula, the overall performance of the prepared low-cost high-toughness ABS / PA66 alloy material can be further improved while saving the preparation cost.

[0042] Specifically, the tackified recycled ABS resin can be 10 parts, 20 parts, 30 parts, 40 parts, 50 parts, 60 parts or any value in the range of (10-60) parts, the toughened ABS resin can be 20 parts, 30 parts, 40 parts, 50 parts, 60 parts or any value in the range of (20-60) parts, the PA66 resin can be 5 parts, 10 parts, 20 parts, 30 parts, 40 parts, 50 parts, 60 parts or any value in the range of (5-60) parts, and the compatibilizer can be 3 parts, 4 parts, 5 parts, 6 parts, 7 parts, 8 parts. The amount of the present invention can be 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8 or any value in the range of (0.1-0.8) parts, the amount of the lubricant can be 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9 or any value in the range of (0.2-0.9) parts.

[0043] Furthermore, in some embodiments, a chain extender is used to perform viscosity-enhancing treatment on the recycled ABS, wherein the chain extender is a hydroxyl chain extender, and the mass ratio of the chain extender to the recycled ABS is (0.1-1.0):100.

[0044] Understandably, ABS will age and degrade during processing and use, causing the polymer molecular chain to break, resulting in a decrease in molecular weight, that is, the polybutadiene phase degrades, generating oxygen-containing carbonyl and hydroxyl groups, and at the same time causing the separation of the two phases of the polymer, poor compatibility, and deterioration of impact toughness, that is, the mechanical properties and compatibility of the recycled ABS are poor. In this application, the recycled ABS is melt-chain extended by adding a hydroxyl-type chain extender. The addition of the hydroxyl-type chain extender has a good repair effect on the recycled ABS, connecting the originally broken molecular chains in the recycled ABS, improving the relative molecular mass of the recycled ABS, and achieving molecular repair, so that the storage modulus and loss modulus of the recycled ABS are increased, that is, the mechanical properties are improved.

[0045] Specifically, the mass ratio of the chain extender to the recycled ABS resin is (0.1-1.0): 100. If the amount of the chain extender is too much, the comprehensive performance of the prepared low-cost high-toughness ABS / PA66 alloy material will be affected, and the preparation cost of the low-cost high-toughness ABS / PA66 alloy material will be increased. If the amount of the chain extender is too little, the repair effect on the molecular chain of the recycled ABS resin is limited, resulting in poor viscosity enhancement effect on the recycled ABS resin.

[0046] Furthermore, in some embodiments, the ABS resin is toughened with an auxiliary agent, wherein the auxiliary agent is at least one of maleic anhydride grafted styrene-ethylene-butadiene-styrene copolymer (SEBS-g-MAH), maleic anhydride grafted ethylene-propylene-non-conjugated diene copolymer (EPDM-g-MAH), maleic anhydride grafted ethylene-octene copolymer (POE-g-MAH), maleic anhydride grafted styrene-butadiene rubber (SBR-g-MAH), maleic anhydride grafted nitrile rubber (NBR-g-MAH), and maleic anhydride grafted thermoplastic polyurethane elastomer (TPU-g-MAH), and the mass ratio of the auxiliary agent to the ABS resin is (1-3):100.

[0047] In the present application, by toughening ABS resin, the prepared low-cost high-toughness ABS / PA66 alloy material can have excellent toughness and meet practical needs. The mass ratio of the auxiliary agent to the ABS resin is (1-3):100. If the amount of the auxiliary agent added is too little, the toughening effect on the ABS resin is not obvious, and if the amount of the auxiliary agent added is too much, the comprehensive performance of the prepared low-cost high-toughness ABS / PA66 alloy material will be affected, and the preparation cost of the low-cost high-toughness ABS / PA66 alloy material will be increased.

[0048] Further, in some embodiments, the melt index of the recycled ABS resin is 20-40 g / 10 min, the density is less than 1.06, and the impact strength is greater than 13 KJ / m 2 .

[0049] In this application, the recycled ABS resin used has a melt index of 20-40g / 10min, a density of less than 1.06, and an impact strength of more than 13KJ / m 2 Recycled resin, that is, the recycled ABS resin used is post-consumer recycled ABS material that meets the GRS (Global Recycle Standard) certification. Therefore, the quality of the raw materials can be controlled from the source to ensure the stable performance of the prepared low-cost and high-toughness ABS / PA66 alloy material. In the preparation process, the recycled ABS resin can also be recycled again to avoid waste of resources.

[0050] Further, in some embodiments, the melt index of the ABS resin is 15-35 g / 10 min, the density is 1.02-1.1, and the impact strength is greater than 18 KJ / m 2 .

[0051] In this application, the melt index is 15-35g / 10min, the density is 1.02-1.1, and the impact strength is greater than 18KJ / m 2 On the one hand, ABS resin that meets the conditions is easy to obtain. On the other hand, the low-cost and high-toughness ABS / PA66 alloy material prepared by using ABS resin that meets the above conditions has stable performance and excellent toughness.

[0052] Furthermore, in some embodiments, the viscosity of the PA66 resin is 2.6-3.0 Pa·s.

[0053] Understandably, the viscosity of PA66 resin will affect the technical effect of its use in material modification. In this application, by selecting PA66 resin with a viscosity range of 2.6-3.0 Pa·s, the prepared low-cost high-toughness ABS / PA66 alloy material has stable performance and good toughness. Preferably, the viscosity of PA66 resin is 2.7 Pa·s.

[0054] Further, in some embodiments, the compatibilizer is a styrene copolymer containing a reactive group; and / or the toughening agent is at least one of maleic anhydride grafted ethylene-octene copolymer (POE-g-MAH) or styrene-butadiene rubber (SBR); and / or the oxidant is at least one of antioxidant AT-10, antioxidant AT76, antioxidant 1098, antioxidant DLTP, and antioxidant 168; and / or the lubricant is at least one of zinc stearate, ethylene bisstearamide, and pentaerythritol stearate.

[0055] In the present application, by selecting the above-mentioned compatibilizer, toughening agent, oxidant and lubricant, the prepared low-cost and high-toughness ABS / PA66 alloy material has stable performance and good toughness.

[0056] In a second aspect, the present application provides a method for preparing a low-cost and high-toughness ABS / PA66 alloy material, which comprises the following steps:

[0057] S1, providing raw materials, and mixing and high-speed stirring the raw materials to obtain a mixture;

[0058] S2. Add the mixture into a twin-screw extruder, and granulate it through melt extrusion to obtain a low-cost and high-toughness ABS / PA66 alloy material.

[0059] The raw materials include 5-85 parts of recycled ABS resin, 0-70 parts of ABS resin, 5-60 parts of PA66 resin, 3-8 parts of compatibilizer, 3-8 parts of toughening agent, 0.1-0.8 parts of antioxidant and 0.2-0.9 parts of lubricant; the recycled ABS resin is recycled ABS resin treated with viscosity enhancement, and the ABS resin is ABS resin treated with toughening.

[0060] In the present application, the raw materials are first weighed according to the proportion and added to a mixer for mixing to obtain a mixture; thereafter, the mixture is added to a twin-screw extruder, and after setting the melt extrusion process parameters, melt extrusion is performed, and after extrusion, water cooling, air cooling and granulation are performed to obtain a low-cost high-toughness ABS / PA66 alloy material. The low-cost high-toughness ABS / PA66 alloy material prepared by this process has stable performance and good toughness, which can meet practical needs.

[0061] Further, in some embodiments, the temperature of the twin-screw extruder is set to: the head temperature is 240-260°C, the temperature of zone one is 190-220°C, the temperature of zone two is 240-260°C, the temperature of zone three is 240-260°C, the temperature of zone four is 240-260°C, the temperature of zone five is 230-250°C, the temperature of zone six is ​​230-250°C, the temperature of zone seven is 220-250°C, and the temperature of zone eight is 220-250°C; and / or the rotation speed of the twin-screw extruder is 250-350r / min; and / or the vacuum degree of the twin-screw extruder is greater than or equal to 0.06MPa.

[0062] In the present application, by controlling the process parameters of injection molding, the fusion between the components can be further improved, which helps to improve the mechanical properties of the prepared low-cost and high-toughness ABS / PA66 alloy material.

[0063] The following is a further explanation of a low-cost, high-toughness ABS / PA66 alloy material and a preparation method thereof according to a specific embodiment. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments, and are only used to illustrate the present invention but not to limit the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0064] It should be noted that the experimental methods in the following embodiments are all routine operations unless otherwise specified, and the reagents involved are all obtained through commercial channels unless otherwise specified.

[0065] In the raw materials of the present invention:

[0066] Recycled ABS resin is a commercially available GRS (Global Recycle Standard) certified post-consumer recycled ABS material with a melt index of 20-40g / 10min, a density of less than 1.06, and an impact of more than 13. For example, the ABS particles produced by Hunan Xinjiyuan New Material Technology Co., Ltd.

[0067] ABS resin is a commercially available ABS material with a melt index of 15-35g / 10min, a density of 1.04, and an impact strength of more than 18KJ / m 2 For example, the ABS PA-757F produced by Chi Mei in Taiwan, or the ABS AG15A1-H produced by Formosa Chemicals in Taiwan.

[0068] PA66 resin is a commercially available resin with a viscosity value of 2.7, for example, PA66 EPR27 produced by Pingdingshan Shenma Group.

[0069] The compatibilizer is FB7023, a styrene copolymer containing reactive functional groups produced by Jiayirong.

[0070] The toughening agent is Jiayirong's maleic anhydride grafted ethylene-octene copolymer CMG5805, or Kumho's emulsion styrene-butadiene rubber particles HR-181.

[0071] The antioxidant is a mixture of antioxidant AT-10 and antioxidant 168. For example, AT-10 and AT-168 are produced by SI Group Chemicals.

[0072] The lubricant is ethylene bis stearamide (EBS), for example, EB-FF produced by Kao of Japan.

[0073] In the present application, the regenerated ABS resin is first subjected to a tackifying treatment to obtain a regenerated ABS resin subjected to a tackifying treatment, and at the same time, the ABS resin is subjected to a toughening treatment to obtain a toughened ABS resin. Hereinafter, unless otherwise specified, the following regenerated ABS resin is assumed to be a regenerated ABS resin subjected to a tackifying treatment, and the following ABS resin is assumed to be a toughened ABS resin. Among them, the tackifying treatment of the regenerated ABS resin and the toughening treatment of the ABS resin are both performed by mixing the additive and the resin to be modified in a high-speed barrel evenly.

[0074] Furthermore, the raw materials are weighed according to the proportion, added into the mixer for mixing, and a mixture is obtained. Thereafter, the mixture is added into the twin-screw extruder for melt extrusion, and the melt extrusion process parameters are set as follows: the head temperature is 240°C, the temperature of zone 1 is 200°C, the temperature of zone 2 is 240°C, the temperature of zone 3 is 260°C, the temperature of zone 4 is 260°C, the temperature of zone 5 is 250°C, the temperature of zone 6 is 250°C, the temperature of zone 7 is 250°C, and the temperature of zone 8 is 220°C; the rotation speed of the twin-screw extruder is 350r / min; the vacuum degree of the twin-screw extruder is equal to 0.06MPa.

[0075] Example 1

[0076] 50 kg of recycled ABS resin, 20 kg of ABS resin, 30 kg of PA66 resin, 5 kg of compatibilizer (FB7023), 8 kg of toughening agent (CMG5805), 0.4 kg of antioxidant (AT-10 and 168), and 0.5 kg of lubricant (EBS) are mixed to obtain a mixture, which is added into a twin-screw extruder for melt extrusion, and then water-cooled, air-dried, and pelletized to obtain a low-cost and high-toughness ABS / PA66 alloy material.

[0077] Example 2

[0078] 35 kg of recycled ABS resin, 35 kg of ABS resin, 30 kg of PA66 resin, 5 kg of compatibilizer (FB7023), 8 kg of toughening agent (CMG5805), 0.4 kg of antioxidant (AT-10 and 168), and 0.5 kg of lubricant (EBS) are mixed to obtain a mixture, and the mixture is added into a twin-screw extruder for melt extrusion, and then water-cooled, air-dried, and pelletized to obtain a low-cost and high-toughness ABS / PA66 alloy material.

[0079] Example 3

[0080] 55 kg of recycled ABS resin, 15 kg of ABS resin, 30 kg of PA66 resin, 5 kg of compatibilizer (FB7023), 8 kg of toughening agent (CMG5805), 0.4 kg of antioxidant (AT-10 and 168), and 0.5 kg of lubricant (EBS) were mixed to obtain a mixture, which was added into a twin-screw extruder for melt extrusion, and then water-cooled, air-dried, and pelletized to obtain a low-cost and high-toughness ABS / PA66 alloy material.

[0081] Example 4

[0082] 10 kg of recycled ABS resin, 60 kg of ABS resin, 30 kg of PA66 resin, 5 kg of compatibilizer (FB7023), 8 kg of toughening agent (CMG5805), 0.4 kg of antioxidant (AT-10 and 168), and 0.5 kg of lubricant (EBS) are mixed to obtain a mixture, which is added into a twin-screw extruder for melt extrusion, and then water-cooled, air-dried, and pelletized to obtain a low-cost and high-toughness ABS / PA66 alloy material.

[0083] Example 5

[0084] 5 kg of recycled ABS resin, 65 kg of ABS resin, 30 kg of PA66 resin, 5 kg of compatibilizer (FB7023), 8 kg of toughening agent (CMG5805), 0.4 kg of antioxidant (AT-10 and 168), and 0.5 kg of lubricant (EBS) are mixed to obtain a mixture, which is added into a twin-screw extruder for melt extrusion, and then water-cooled, air-dried, and pelletized to obtain a low-cost and high-toughness ABS / PA66 alloy material.

[0085] Example 6

[0086] 45 kg of recycled ABS resin, 25 kg of ABS resin, 30 kg of PA66 resin, 5 kg of compatibilizer (FB7023), 8 kg of toughening agent (CMG5805), 0.4 kg of antioxidant (AT-10 and 168), and 0.5 kg of lubricant (EBS) are mixed to obtain a mixture, which is added into a twin-screw extruder for melt extrusion, and then water-cooled, air-dried, and pelletized to obtain a low-cost and high-toughness ABS / PA66 alloy material.

[0087] Example 7

[0088] 50 kg of ABS resin, 20 kg of ABS resin, 30 kg of PA66 resin, 5 kg of compatibilizer (FB7023), 8 kg of toughening agent (HR-181), 0.4 kg of antioxidant (AT-10 and 168), and 0.5 kg of lubricant (EBS) were mixed to obtain a mixture, which was added into a twin-screw extruder for melt extrusion, and then water-cooled, air-dried, and pelletized to obtain a low-cost and high-toughness ABS / PA66 alloy material.

[0089] Comparative Example 1

[0090] 50 kg of recycled ABS resin, 20 kg of ABS resin, 30 kg of PA66 resin, 5 kg of compatibilizer (FB7023), 0.4 kg of antioxidant (AT-10 and 168), and 0.5 kg of lubricant (EBS) were mixed to obtain a mixture, which was added into a twin-screw extruder for melt extrusion, and then water-cooled, air-dried, and pelletized to obtain an ABS / PA66 alloy material.

[0091] Comparative Example 2

[0092] 50 kg of recycled ABS resin without tackifying treatment, 20 kg of ABS resin without toughening treatment, 30 kg of PA66 resin, 5 kg of compatibilizer (FB7023), 8 kg of toughening agent (CMG5805), 0.4 kg of antioxidant (AT-10 and 168), and 0.5 kg of lubricant (EBS) were mixed to obtain a mixture, and the mixture was added into a twin-screw extruder for melt extrusion, and then water-cooled, air-dried, and pelletized to obtain an ABS / PA66 alloy material.

[0093] Table 1

[0094]

[0095]

[0096] The particle materials prepared in the above examples 1-7 and comparative examples 1-2 were first dried in a drying oven, and then the dried particle materials were made into standard test specimens by injection molding. The test performance is shown in Table 2:

[0097] Among them, each performance test method:

[0098] (1) Notched impact strength test: test standard ISO 180;

[0099] (2) Tensile strength test: test standard ISO 527;

[0100] (3) Flexural strength test: test standard ISO 178;

[0101] (4) Flexural modulus test: test standard ISO 178.

[0102] Table 2

[0103]

[0104] Therefore, it can be seen from the data in Table 2 that the low-cost and high-toughness ABS / PA66 alloy material prepared by the present invention has better toughness, which can overcome the technical problem that the existing post-consumer recycled plastics have low toughness and cannot meet practical needs.

[0105] It should be understood that the application of the present invention is not limited to the above examples. For ordinary technicians in this field, improvements or changes can be made based on the above description. All these improvements and changes should fall within the scope of protection of the claims attached to the present invention.

Claims

1. A low-cost and high-toughness ABS / PA66 alloy material, wherein: The components include: Recycled ABS resin 5-85 parts, ABS resin 0-70 parts, PA66 resin 5-60 parts, compatibilizer 3-8 parts, toughening agent 3-8 parts, antioxidant 0.1-0.8 parts, lubricant 0.2-0.9 parts; Wherein, the recycled ABS resin is a recycled ABS resin that has been subjected to a tackifying treatment, and the ABS resin is an ABS resin that has been subjected to a toughening treatment.

2. The low-cost and high-toughness ABS / PA66 alloy material according to claim 1, characterized in that: The components include: Recycled ABS resin 10-60 parts, ABS resin 20-60 parts, PA66 resin 5-60 parts, compatibilizer 3-8 parts, toughening agent 3-8 parts, antioxidant 0.1-0.8 parts, lubricant 0.2-0.9 parts; Wherein, the recycled ABS resin is a recycled ABS resin that has been subjected to a tackifying treatment, and the ABS resin is an ABS resin that has been subjected to a toughening treatment.

3. The low-cost and high-toughness ABS / PA66 alloy material according to claim 1 or 2, characterized in that: The regenerated ABS is subjected to viscosity-increasing treatment by using a chain extender, wherein the chain extender is a hydroxyl chain extender, and the mass ratio of the chain extender to the regenerated ABS is (0.1-1.0):

100.

4. The low-cost and high-toughness ABS / PA66 alloy material according to claim 1 or 2, characterized in that: The ABS resin is toughened by using an auxiliary agent, wherein the auxiliary agent is at least one of maleic anhydride grafted styrene-ethylene-butadiene-styrene copolymer (SEBS-g-MAH), maleic anhydride grafted ethylene-propylene-non-conjugated diene copolymer (EPDM-g-MAH), maleic anhydride grafted ethylene-octene copolymer (POE-g-MAH), maleic anhydride grafted styrene-butadiene rubber (SBR-g-MAH), maleic anhydride grafted nitrile rubber (NBR-g-MAH), and maleic anhydride grafted thermoplastic polyurethane elastomer (TPU-g-MAH), and the mass ratio of the auxiliary agent to the ABS resin is (1-3):

100.

5. The low-cost and high-toughness ABS / PA66 alloy material according to claim 1, characterized in that: The regenerated ABS resin has a melt index of 20-40 g / 10 min, a density of less than 1.06, and an impact strength of more than 13 KJ / m 2 .

6. The low-cost and high-toughness ABS / PA66 alloy material according to claim 1, characterized in that: The ABS resin has a melt index of 15-35 g / 10 min, a density of 1.02-1.1, and an impact strength of more than 18 KJ / m 2 .

7. The low-cost and high-toughness ABS / PA66 alloy material according to claim 1, characterized in that: The viscosity of the PA66 resin is 2.6-3.0 Pa·s.

8. The low-cost and high-toughness ABS / PA66 alloy material according to claim 1, characterized in that: The compatibilizer is a styrene copolymer containing reactive groups; and / or The toughening agent is at least one of maleic anhydride grafted ethylene-octene copolymer (POE-g-MAH) or styrene-butadiene rubber (SBR); and / or The oxidant is at least one of antioxidant AT-10, antioxidant AT76, antioxidant 1098, antioxidant DLTP, and antioxidant 168; and / or The lubricant is at least one of zinc stearate, ethylene bis stearamide and pentaerythritol stearate.

9. A method for preparing a low-cost and high-toughness ABS / PA66 alloy material, characterized in that: Includes steps: Providing raw materials, and mixing and high-speed stirring the raw materials to obtain a mixture; The mixture is added into a twin-screw extruder, and granulated by melt extrusion to obtain the low-cost and high-toughness ABS / PA66 alloy material; The raw materials include 5-85 parts of recycled ABS resin, 0-70 parts of ABS resin, 5-60 parts of PA66 resin, 3-8 parts of compatibilizer, 3-8 parts of toughening agent, 0.1-0.8 parts of antioxidant, and 0.2-0.9 parts of lubricant; the recycled ABS resin is recycled ABS resin after tackification treatment, and the ABS resin is ABS resin after toughening treatment.

10. The method for preparing low-cost and high-toughness ABS / PA66 alloy material according to claim 9, characterized in that: The temperature of the twin-screw extruder is set as follows: the head temperature is 240-260°C, the temperature of zone 1 is 190-220°C, the temperature of zone 2 is 240-260°C, the temperature of zone 3 is 240-260°C, the temperature of zone 4 is 240-260°C, the temperature of zone 5 is 230-250°C, the temperature of zone 6 is 230-250°C, the temperature of zone 7 is 220-250°C, and the temperature of zone 8 is 220-250°C; and / or The speed of the twin-screw extruder is 250-350 r / min; and / or The vacuum degree of the twin-screw extruder is greater than or equal to 0.06 MPa.

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