Ultra-lightweight bio-based long carbon chain nylon alloy material and preparation method and application thereof

Abstract

The invention relates to an ultralight bio-based long-carbon-chain nylon alloy material and a preparation method and application thereof, and the ultralight bio-based long-carbon-chain nylon alloy material is prepared from the following components in percentage by mass: 1%-5% of a compatilizer, 10%-25% of a lightweight agent, 10%-26% of hollow glass beads, 0.2%-0.7% of a lubricant, 0.2%-1% of an antioxidant, 0.2%-0.7% of a nucleating agent and 1%-3% of a coloring agent, and the balance of bio-based polyamide resin. The ultralight bio-based long-carbon-chain nylon alloy material meets the mechanical property requirement and the chemical resistance requirement of wearable products, the density of the nylon alloy material is lower than 0.8 g / cm < 3 >, and the weight of the nylon alloy material is reduced by 15% or above compared with that of common light wearable products in the market.

Description

Technical Field

[0001] The present invention relates to the technical field of polymer materials, and in particular to an ultra-lightweight bio-based long carbon chain nylon alloy material and a preparation method and application thereof. Background Art

[0002] "Wearable" products mainly refer to wearable smart devices, which are a general term for the use of wearable technology to intelligently design and develop wearable devices for daily wear, such as VR glasses, gloves, smart watches, clothing and shoes. In a broad sense, wearable smart devices include those with full functions, small size, and can achieve complete or partial functions without relying on smartphones, such as smart watches or smart glasses, as well as those that only focus on a certain type of application function and need to be used in conjunction with other devices such as smartphones, such as various smart bracelets and smart jewelry for vital sign monitoring. With the advancement of technology and the changes in user needs, the form and application hotspots of wearable smart devices are also constantly changing.

[0003] Wearable technology has always attracted much attention in the international computer academic and industrial circles. It not only pursues intelligence, but also requires lightweight. It requires products to be smaller, lighter, and more comfortable while achieving their functions. This also puts forward more stringent lightweight requirements for materials. However, lightweight products on the market are mainly lightweight PC, but the density of PC material itself is high. After modification, the lowest density is 1g / cm 3 The above cannot meet the requirements of wearable technology. Summary of the invention

[0004] Based on this, the purpose of the present invention is to provide an ultra-lightweight bio-based long carbon chain nylon alloy material and its preparation method and application. The ultra-lightweight bio-based long carbon chain nylon alloy material meets the mechanical performance requirements and chemical resistance requirements of wearable products, and the material density is less than 0.8g / cm 3 , which is more than 15% lighter than ordinary lightweight wearable products on the market.

[0005] To achieve the above object, the present invention adopts the following technical solutions: The present invention first provides an ultra-lightweight bio-based long carbon chain nylon alloy material, which is prepared from the following components in percentage by mass: 1%-5% of a compatibilizer, 10%-25% of a lightweight agent, 10%-26% of hollow glass microspheres, 0.2%-0.7% of a lubricant, 0.2%-1% of an antioxidant, 0.2%-0.7% of a nucleating agent, 1%-3% of a colorant, and the remainder being a bio-based polyamide resin.

[0006] As a further improvement of the above solution of the present invention, the lightening agent is a lightening agent of at least one brand selected from LDPE2426H, LDPE2426K, LDPELA0710 and POE875.

[0007] As a further improvement of the above solution of the present invention, the hollow glass microspheres are hollow glass microspheres of at least one grade among HL60S, HL46, and S60H.

[0008] As a further improvement of the above solution of the present invention, the compatibilizer is at least one of grafted POE, grafted EPDM, grafted PP, and grafted SEBS.

[0009] As a further improvement of the above solution of the present invention, the bio-based polyamide resin is PA1010 medium-viscosity resin, and its relative viscosity is 2-4.

[0010] As a further improvement of the above scheme of the present invention, the lubricant is at least one of PETS, OP wax, silicone, silicone oil and silicone amide.

[0011] As a further improvement of the above scheme of the present invention, the antioxidant includes a main antioxidant and an auxiliary antioxidant, the main antioxidant is at least one of antioxidant 245, antioxidant 1010, antioxidant 1098, and antioxidant 9228, and the auxiliary antioxidant is at least one of antioxidant 168 and antioxidant 626.

[0012] As a further improvement of the above solution of the present invention, the nucleating agent is at least one of CAV102, P22 and Finner-122; As a further improvement of the above scheme of the present invention, the colorant is at least one of nylon carrier aniline black masterbatch and PE carrier black masterbatch.

[0013] The present invention also proposes a method for preparing the ultra-lightweight bio-based long carbon chain nylon alloy material as described above, which comprises the following steps: mixing a bio-based polyamide resin, a compatibilizer, a lightweight agent and a colorant in proportion, and then adding a lubricant, an antioxidant and a nucleating agent and mixing them evenly to obtain a mixture; adding the mixture to the main feed port of a twin-screw extruder, and adding hollow glass microbeads through a second side feed port; after melting, extrusion, cooling, air drying and pelletizing, an ultra-lightweight bio-based long carbon chain nylon alloy material is obtained.

[0014] The present invention also proposes an application of the ultra-lightweight bio-based long carbon chain nylon alloy material as described above as a wearable product material.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention combines a lightweight agent with a bio-based polyamide resin to reduce the density of the alloy material, achieve lightweighting of the alloy material, and ensure the mechanical properties of the alloy material, especially to improve the impact resistance of the alloy material to a certain extent; the present invention also introduces hollow glass microspheres to further reduce the density of the alloy material and achieve a second weight reduction of the alloy material to achieve the purpose of lightweighting; and by adding a compatibilizer, the compatibility of the lightweight agent, hollow glass microspheres and the bio-based polyamide resin is improved to avoid phase stratification.

[0016] 2. The ultra-lightweight bio-based long carbon chain nylon alloy material of the present invention meets the mechanical performance requirements and chemical resistance requirements of wearable products. The density of the nylon alloy material is less than 0.8g / cm 3 , which is more than 15% lighter than ordinary lightweight wearable products on the market. DETAILED DESCRIPTION

[0017] For ease of understanding of the present invention, the present invention will be described more fully below in conjunction with specific embodiments. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly understood.

[0018] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0019] The specific information of the raw materials used in the following examples and comparative examples is as follows: The lubricant is silicone masterbatch, brand MB50-002, manufactured by Dow Corning; The main antioxidant is antioxidant 1010, produced by Tianjin Lianlong; The auxiliary antioxidant is antioxidant 168, produced by Tianjin Lianlong; Lightweight agent, brand name LDPE2426K, produced by Yangzi Petrochemical; Colorant, brand PE2718, manufacturer Cabot; PA1010 medium viscosity resin, brand name PA1010 medium viscosity, manufacturer is Shandong Dongchen, relative viscosity is 2.4; Compatibilizer, brand name X-012, manufactured by Nengzhiguang; Hollow glass microspheres, brand name S60H, manufactured by 3M; Nucleating agent, brand name CAV102, manufactured by Clariant.

[0020] All the above materials are commercially available conventional products.

[0021] It can be understood that the above raw materials and reagents are only examples of some specific embodiments of the present invention, which makes the technical solution of the present invention clearer, and does not mean that the present invention can only adopt the above reagents. The specific scope shall be subject to the scope in the claims.

[0022] Any range described in the present invention includes the end value and any numerical value between the end values ​​and any sub-range formed by the end value or any numerical value between the end values.

[0023] Example 1 This embodiment provides an ultra-lightweight bio-based long carbon chain nylon alloy material, and the preparation method thereof comprises the following steps: S1. Weighing materials: First, dry the PA1010 medium-viscosity resin at 80°C for 4 hours for later use; then weigh the raw materials according to mass percentage: compatibilizer 3%, lubricant 0.5%, primary antioxidant 0.2%, secondary antioxidant 0.2%, nucleating agent 0.2%, lightweight agent 20%, hollow glass microspheres 20%, colorant 1.5%, PA1010 medium-viscosity resin 54.4%; S2. Mixing: Add weighed PA1010 medium viscous resin, compatibilizer, lightweight agent, colorant in a high-speed mixer and mix at high speed for 5 minutes, then add weighed lubricant, primary antioxidant, secondary antioxidant and nucleating agent and continue mixing at high speed for 5 minutes to obtain a mixture; S3. Melt extrusion: add the mixture obtained in step S2 to the main feed port of the twin-screw extruder, add hollow glass microbeads from the second side feed port, and melt extrude: cool, air-dry, pelletize, pass through a vibrating screen, and homogenize and package the extruded material to obtain the finished product, that is, an ultra-lightweight bio-based long carbon chain nylon alloy material. The temperature of the twin-screw extruder from the first zone to the head is 210°C, 235°C, 235°C, 235°C, 235°C, 240°C, 240°C, 240°C, 240°C, 240°C, 240°C, 245°C; the screw speed is 280 rpm, and the speed during feeding is 15-25 rpm.

[0024] Example 2 This embodiment provides an ultra-lightweight bio-based long carbon chain nylon alloy material, and the preparation method thereof comprises the following steps: S1. Weighing materials: First, dry the PA1010 medium-viscosity resin at 80°C for 4 hours for later use; then weigh the raw materials according to mass percentage: compatibilizer 3%, lubricant 0.5%, primary antioxidant 0.2%, secondary antioxidant 0.2%, nucleating agent 0.2%, lightweight agent 20%, hollow glass microspheres 23%, colorant 1.5%, PA1010 medium-viscosity resin 51.4%; S2. Mixing: Add weighed PA1010 medium viscous resin, compatibilizer, lightweight agent, colorant in a high-speed mixer and mix at high speed for 5 minutes, then add weighed lubricant, primary antioxidant, secondary antioxidant and nucleating agent and continue mixing at high speed for 5 minutes to obtain a mixture; S3. Melt extrusion: add the mixture obtained in step S2 to the main feed port of the twin-screw extruder, add hollow glass microbeads from the second side feed port, and melt extrude: cool, air-dry, pelletize, pass through a vibrating screen, and homogenize and package the extruded material to obtain the finished product, that is, an ultra-lightweight bio-based long carbon chain nylon alloy material. The temperature of the twin-screw extruder from the first zone to the head is 210°C, 235°C, 235°C, 235°C, 235°C, 240°C, 240°C, 240°C, 240°C, 240°C, 240°C, 245°C; the screw speed is 280 rpm, and the speed during feeding is 15-25 rpm.

[0025] Example 3 This embodiment provides an ultra-lightweight bio-based long carbon chain nylon alloy material, and the preparation method thereof comprises the following steps: S1. Weighing materials: First, dry the PA1010 medium-viscosity resin at 80°C for 4 hours for later use; then weigh the raw materials according to mass percentage: compatibilizer 3%, lubricant 0.5%, primary antioxidant 0.2%, secondary antioxidant 0.2%, nucleating agent 0.2%, lightweight agent 20%, hollow glass microspheres 26%, colorant 1.5%, PA1010 medium-viscosity resin 48.4%; S2. Mixing: Add weighed PA1010 medium viscous resin, compatibilizer, lightweight agent, colorant in a high-speed mixer and mix at high speed for 5 minutes, then add weighed lubricant, primary antioxidant, secondary antioxidant and nucleating agent and continue mixing at high speed for 5 minutes to obtain a mixture; S3. Melt extrusion: add the mixture obtained in step S2 to the main feed port of the twin-screw extruder, add hollow glass microbeads from the second side feed port, and melt extrude: cool, air-dry, pelletize, pass through a vibrating screen, and homogenize and package the extruded material to obtain the finished product, that is, an ultra-lightweight bio-based long carbon chain nylon alloy material. The temperature of the twin-screw extruder from the first zone to the head is 210°C, 235°C, 235°C, 235°C, 235°C, 240°C, 240°C, 240°C, 240°C, 240°C, 240°C, 245°C; the screw speed is 280 rpm, and the speed during feeding is 15-25 rpm.

[0026] Comparative Example 1 This comparative example provides a long carbon chain nylon alloy material, and its preparation method comprises the following steps: S1. Weighing materials: First, dry the PA1010 medium-viscosity resin at 80°C for 4 hours for later use; then weigh the raw materials according to mass percentage: compatibilizer 3%, lubricant 0.5%, primary antioxidant 0.2%, secondary antioxidant 0.2%, nucleating agent 0.2%, lightweight agent 20%, hollow glass microspheres 28%, colorant 1.5%, PA1010 medium-viscosity resin 46.4%; S2. Mixing: Add weighed PA1010 medium viscous resin, compatibilizer, lightweight agent, colorant in a high-speed mixer and mix at high speed for 5 minutes, then add weighed lubricant, primary antioxidant, secondary antioxidant and nucleating agent and continue mixing at high speed for 5 minutes to obtain a mixture; S3. Melt extrusion: add the mixture obtained in step S2 to the main feed port of the twin-screw extruder, add hollow glass microbeads from the second side feed port, and melt extrude: cool, air-dry, pelletize, pass through a vibrating screen, and homogenize and package the extruded material to obtain the finished product, that is, an ultra-lightweight bio-based long carbon chain nylon alloy material. The temperature of the twin-screw extruder from the first zone to the head is 210°C, 235°C, 235°C, 235°C, 235°C, 240°C, 240°C, 240°C, 240°C, 240°C, 240°C, 245°C; the screw speed is 280 rpm, and the speed during feeding is 15-25 rpm.

[0027] Comparative Example 2 This comparative example provides a long carbon chain nylon alloy material, and its preparation method comprises the following steps: S1. Weighing materials: First, dry the PA1010 medium-viscosity resin at 80°C for 4 hours for later use; then weigh the raw materials according to mass percentage: lubricant 0.5%, primary antioxidant 0.2%, auxiliary antioxidant 0.2%, nucleating agent 0.2%, lightweight agent 20%, hollow glass microspheres 20%, colorant 1.5%, PA1010 medium-viscosity resin 57.4%; S2. Mixing: Add weighed PA1010 medium viscous resin, lightweight agent, colorant in a high-speed mixer and mix at high speed for 5 minutes, then add weighed lubricant, primary antioxidant, secondary antioxidant and nucleating agent and continue mixing at high speed for 5 minutes to obtain a mixture; S3. Melt extrusion: add the mixture obtained in step S2 to the main feed port of the twin-screw extruder, add hollow glass microbeads from the second side feed port, and melt extrude: cool, air-dry, pelletize, pass through a vibrating screen, and homogenize and package the extruded material to obtain the finished product, that is, an ultra-lightweight bio-based long carbon chain nylon alloy material. The temperature of the twin-screw extruder from the first zone to the head is 210°C, 235°C, 235°C, 235°C, 235°C, 240°C, 240°C, 240°C, 240°C, 240°C, 240°C, 245°C; the screw speed is 280 rpm, and the speed during feeding is 15-25 rpm.

[0028] Comparative Example 3 This comparative example provides a long carbon chain nylon alloy material, and its preparation method comprises the following steps: S1. Weighing materials: First, dry the PA1010 medium-viscosity resin at 80°C for 4 hours for later use; then weigh the raw materials according to mass percentage: compatibilizer 3%, lubricant 0.5%, primary antioxidant 0.2%, secondary antioxidant 0.2%, nucleating agent 0.2%, lightweight agent 28%, hollow glass microspheres 23%, colorant 1.5%, PA1010 medium-viscosity resin 43.4%; S2. Mixing: Add weighed PA1010 medium viscous resin, compatibilizer, lightweight agent, colorant in a high-speed mixer and mix at high speed for 5 minutes, then add weighed lubricant, primary antioxidant, secondary antioxidant and nucleating agent and continue mixing at high speed for 5 minutes to obtain a mixture; S3. Melt extrusion: add the mixture obtained in step S2 to the main feed port of the twin-screw extruder, add hollow glass microbeads from the second side feed port, and melt extrude: cool, air-dry, pelletize, pass through a vibrating screen, and homogenize and package the extruded material to obtain the finished product, that is, an ultra-lightweight bio-based long carbon chain nylon alloy material. The temperature of the twin-screw extruder from the first zone to the head is 210°C, 235°C, 235°C, 235°C, 235°C, 240°C, 240°C, 240°C, 240°C, 240°C, 240°C, 245°C; the screw speed is 280 rpm, and the speed during feeding is 15-25 rpm.

[0029] Comparative Example 4 This comparative example provides a long carbon chain nylon alloy material, and its preparation method comprises the following steps: S1. Weighing materials: First, dry the PA1010 medium-viscosity resin at 80°C for 4 hours for later use; then weigh the raw materials according to mass percentage: compatibilizer 3%, lubricant 0.5%, primary antioxidant 0.2%, secondary antioxidant 0.2%, nucleating agent 0.2%, hollow glass microspheres 20%, colorant 1.5%, PA1010 medium-viscosity resin 74.4%; S2. Mixing: Add weighed PA1010 medium viscous resin, compatibilizer, lightweight agent, colorant in a high-speed mixer and mix at high speed for 5 minutes, then add weighed lubricant, primary antioxidant, secondary antioxidant and nucleating agent and continue mixing at high speed for 5 minutes to obtain a mixture; S3. Melt extrusion: Add the mixed material obtained in step S2 to the main feed port of the twin-screw extruder, add the hollow glass microbeads from the second side feed port, and melt extrude; cool, air-dry, pelletize, pass through a vibrating screen, and homogenize and package the extruded material to obtain a finished product, that is, a long carbon chain nylon alloy material. The temperature of the twin-screw extruder from the first zone to the head is 210°C, 235°C, 235°C, 235°C, 235°C, 240°C, 240°C, 240°C, 240°C, 240°C, 240°C, 245°C; the screw speed is 280 rpm, and the feed is 15-25 rpm.

[0030] Test Case The long carbon chain nylon alloy materials prepared in Examples 1-3 and Comparative Examples 1-3 were subjected to performance tests. The test results are shown in the table. The performance test methods and conditions are shown in Table 1. The test results are shown in Table 2.

[0031] Table 1 Performance test methods and conditions

[0032] Table 2 Performance test results

[0033] From the results in Table 2, we can see that: Examples 1-3 used a material composed of PA1010 medium-viscosity resin, a lightweight agent, hollow glass microspheres and a compatibilizer, and extruded smoothly. However, due to the relatively small bulk density of the hollow glass microspheres, the addition amount was limited. In Example 3, when the addition amount of the hollow glass microspheres reached 26%, we were able to achieve smooth extrusion of the material by changing the screw groove depth near the addition port, indicating that 26% is the addition amount limit of the hollow glass microspheres. From the test results of Examples 1-3, it can be seen that the density of the nylon alloy materials in Examples 1-3 is lower than 0.8 g / cm 3 , which explains that the density of the alloy material can be reduced by combining the lightweight agent with the bio-based polyamide resin. The density of the alloy material can be further reduced by introducing hollow glass microspheres, achieving a second weight reduction of the alloy material to achieve the purpose of lightweighting, and also providing a certain toughening effect; From the test results of comparative example 1, it can be seen that when the amount of hollow glass microspheres added reaches 28%, this amount has exceeded the maximum amount of the side feed of the extruder, and there is a surplus in the hopper and no more can be added; From the test results of comparative example 2, it can be seen that when the compatibilizer is missing, the compatibility of PA1010, lightweight agent and inorganic hollow glass microspheres is problematic, and there is a relatively serious delamination phenomenon; From the test results of Comparative Example 3, it can be seen that when the amount of lightweight agent added is too high, the quality is soft, the cooling is slow, and there is a serious mold sticking phenomenon; From the test results of Comparative Example 4, it can be seen that since only hollow glass microspheres are used for lightweighting in Comparative Example 4, the density of nylon alloy material can only reach 0.9g / cm 3 , and the toughness is very poor.

[0034] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0035] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. An ultra-lightweight bio-based long carbon chain nylon alloy material, characterized in that: The invention is prepared from the following components in percentage by weight: 1%-5% of a compatibilizer, 10%-25% of a lightweight agent, 10%-26% of hollow glass microspheres, 0.2%-0.7% of a lubricant, 0.2%-1% of an antioxidant, 0.2%-0.7% of a nucleating agent, 1%-3% of a colorant, and the remainder being a bio-based polyamide resin.

2. The ultra-lightweight bio-based long carbon chain nylon alloy material according to claim 1, characterized in that: The lightening agent is a lightening agent of at least one brand selected from LDPE 426H, LDPE2426K, LDPELA0710 and POE875.

3. The ultra-lightweight bio-based long carbon chain nylon alloy material according to claim 1, characterized in that: The hollow glass microspheres are hollow glass microspheres of at least one grade among HL60S, HL46 and S60H.

4. The ultra-lightweight bio-based long carbon chain nylon alloy material according to claim 1, characterized in that: The compatibilizer is at least one of grafted POE, grafted EPDM, grafted PP, and grafted SEBS.

5. The ultra-lightweight bio-based long carbon chain nylon alloy material according to claim 1, characterized in that: The bio-based polyamide resin is a PA1010 medium-viscosity resin with a relative viscosity of 2-4.

6. The ultra-lightweight bio-based long carbon chain nylon alloy material according to claim 1, characterized in that: The lubricant is at least one of PETS, OP wax, silicone, silicone oil and silicone amide.

7. The ultra-lightweight bio-based long carbon chain nylon alloy material according to claim 1, characterized in that: The antioxidant includes a primary antioxidant and an auxiliary antioxidant. The primary antioxidant is at least one of antioxidant 245, antioxidant 1010, antioxidant 1098, and antioxidant 9228. The auxiliary antioxidant is at least one of antioxidant 168 and antioxidant 626.

8. The ultra-lightweight bio-based long carbon chain nylon alloy material according to claim 1, characterized in that: The nucleating agent is at least one of CAV102, P22 and Finner-122; And / or, the colorant is at least one of nylon carrier aniline black masterbatch and PE carrier black masterbatch.

9. A method for preparing an ultra-lightweight bio-based long carbon chain nylon alloy material as described in any one of claims 1 to 8, characterized in that: The method comprises the following steps: uniformly mixing a bio-based polyamide resin, a compatibilizer, a lightweight agent and a colorant according to a proportion, and then adding a lubricant, an antioxidant and a nucleating agent and mixing them uniformly to obtain a mixture; adding the mixture into a main feeding port of a twin-screw extruder, adding hollow glass microbeads through a second side feeding port, and obtaining an ultra-lightweight bio-based long carbon chain nylon alloy material through melting, extrusion, cooling, air drying and pelletizing.

10. Use of the ultra-lightweight bio-based long carbon chain nylon alloy material as described in any one of claims 1 to 8 as a wearable product material.

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