A glass fiber-reinforced bio-based nylon material, a method for preparing the same, and an article thereof

Abstract

This invention discloses a glass fiber reinforced bio-based nylon material, its preparation method, and the resulting product, relating to the field of environmentally friendly nylon materials. The glass fiber reinforced bio-based nylon material is prepared from 20-30 wt% modified glass fiber, 1-3 wt% lubricant, 0.8-1.2 wt% antioxidant, 0.8-1.2 wt% weathering agent, and the balance modified bio-based nylon. The modified bio-based nylon includes bio-based nylon, allyl glycidyl ether / allyl epoxy polyoxypropylene ether, bi-terminated alkenyl silicone oil, and peroxide ester initiator. The modified glass fiber includes long glass fiber modified with an aminosilane coupling agent and short-cut glass fiber modified with an isocyanate-based silane coupling agent. This application, through the combined action of the modified bio-based nylon, modified glass fiber, and lubricant, effectively improves the dispersibility of glass fiber in the modified bio-based nylon, which is beneficial for obtaining a glass fiber reinforced bio-based nylon material with high strength, good wear resistance, and good toughness.

Description

Technical Field

[0001] This application relates to the field of environmentally friendly nylon materials, and in particular to a glass fiber reinforced bio-based nylon material, its preparation method, and its products. Background Technology

[0002] With increasing global environmental awareness, bio-based polymer materials, due to their renewable and biodegradable nature, are gradually becoming alternatives to traditional petroleum-based polymers. Among them, bio-based nylon, with its excellent mechanical strength, chemical resistance, and processing fluidity, shows broad application prospects in automotive parts, electronic appliance housings, household goods, and building materials. However, pure bio-based nylon still needs improvement in terms of impact toughness, rigidity, and wear resistance.

[0003] Currently, modifying bio-based nylon with glass fiber to improve the strength and wear resistance of bio-based nylon materials is a mainstream research direction. However, the improvement of strength and wear resistance of existing glass fiber reinforced bio-based nylon materials often leads to a loss of impact toughness. Summary of the Invention

[0004] In order to improve the problem that glass fiber reinforced bio-based nylon materials in related technologies cannot simultaneously achieve strength, wear resistance and impact toughness, this application provides a glass fiber reinforced bio-based nylon material, its preparation method and product.

[0005] A glass fiber reinforced bio-based nylon material is prepared from 20-30 wt% modified glass fiber, 1-3 wt% lubricant, 0.8-1.2 wt% antioxidant, 0.8-1.2 wt% weathering agent, and the balance modified bio-based nylon. The raw materials for preparing the modified bio-based nylon include bio-based nylon, allyl glycidyl ether / allyl epoxy polyoxypropylene ether, bi-terminated alkenyl silicone oil, and peroxy ester initiator. The modified glass fiber includes long glass fiber modified with aminosilane coupling agent and short glass fiber modified with isocyanate-based silane coupling agent.

[0006] In this application, modified glass fibers are added, including long glass fibers modified with aminosilane coupling agents and short glass fibers modified with isocyanate-based silane coupling agents. The long glass fibers are preferably modified with aminosilane coupling agents. The modified bio-based nylon obtained by modifying bio-based nylon with allyl glycidyl ether / allyl epoxy polyoxypropylene ether and bi-terminated alkenyl silicone oil, along with a lubricant, can prevent the problem of aminosilane coupling agent modified long glass fibers from tangling and clumping. This is conducive to the effective dispersion of aminosilane coupling agent modified long glass fibers in modified bio-based nylon. At the same time, the embedding of silicone oil segments on modified bio-based nylon is beneficial to promoting the improvement of the toughness of glass fiber reinforced bio-based nylon materials.

[0007] Short glass fibers have better flowability than long glass fibers, making them easier to disperse. In this application, short glass fibers are modified with isocyanate-based silane coupling agents to avoid competition between short and long glass fibers for the epoxy groups on the modified bio-based nylon, thereby promoting the effective dispersion of long glass fibers modified with aminosilane coupling agents.

[0008] In summary, this application, through the combined action of modified bio-based nylon, modified glass fiber, and lubricant, effectively improves the dispersibility of glass fiber in modified bio-based nylon, which is beneficial for obtaining high-strength, wear-resistant, tough, and environmentally friendly glass fiber reinforced bio-based nylon materials. Antioxidants can improve the thermal stability of glass fiber reinforced bio-based nylon materials during processing, and the addition of weather-resistant agents can improve the light stability of glass fiber reinforced bio-based nylon materials.

[0009] In some specific embodiments, the weight ratio of the bio-based nylon, allyl glycidyl ether, bi-terminated alkenyl silicone oil, and peroxide ester initiator is 10:(0.25-0.4):(0.65-0.85):(0.01-0.02), or the weight ratio of the bio-based nylon, allyl epoxy polyoxypropylene ether, bi-terminated alkenyl silicone oil, and peroxide ester initiator is 10:(1.0-2.0):(0.65-0.85):(0.01-0.02).

[0010] In this application, allyl glycidyl ether / allyyl epoxy polyoxypropylene ether and di-terminated alkenyl silicone oil are used to modify bio-based nylon. By optimizing the addition amounts of allyl glycidyl ether / allyyl epoxy polyoxypropylene ether and di-terminated alkenyl silicone oil, the uniform dispersion of modified glass fibers and the strength performance of glass fiber reinforced bio-based nylon materials can be promoted, while preventing a decrease in toughness. This is beneficial for obtaining glass fiber reinforced bio-based nylon materials with high strength, high wear resistance, and good impact toughness. The addition amounts of allyl glycidyl ether and di-terminated alkenyl silicone oil should not be excessive, as excessive amounts can easily reduce the performance of glass fiber reinforced bio-based nylon materials. Furthermore, when allyl epoxy polyoxypropylene ether is excessive, the long glass fibers modified by the aminosilane coupling agent are prone to entanglement and clumping, which is also detrimental to the effective dispersion of the long glass fibers modified by the aminosilane coupling agent.

[0011] In some specific embodiments, the degree of polymerization of the allyl epoxy polyoxypropylene ether is 5-8; the viscosity of the bi-terminated alkenyl silicone oil at 25°C is 300-500 mPa·s.

[0012] In this application, the degree of polymerization of the allyl epoxy polyoxypropylene ether is preferably 5-8, which can prevent the polyoxypropylene ether segments from entangled and clumping with the aminosilane coupling agent-modified long glass fibers, thereby affecting the effective dispersion of the aminosilane coupling agent-modified long glass fibers.

[0013] In some specific embodiments, the weight ratio of the aminosilane coupling agent modified long glass fiber to the isocyanate-based silane coupling agent modified short glass fiber is 1:(3-4).

[0014] In this application, the weight ratio of aminosilane coupling agent-modified long glass fibers and isocyanate-based silane coupling agent-modified short glass fibers is controlled at 1:(3-4). The toughening performance of long glass fibers is superior to that of short glass fibers. This application controls the addition of an appropriate amount of aminosilane coupling agent-modified long glass fibers. The amino groups on the aminosilane coupling agent-modified long glass fibers can interact with the epoxy groups of the modified bio-based nylon, improving both the dispersibility of the long glass fibers and the toughness of the bio-based nylon. The addition of an appropriate amount of isocyanate-based silane coupling agent-modified short glass fibers can enhance the stiffness of the bio-based nylon. Simultaneously, the formation of new chemical bonds between the isocyanate groups and the amino groups at the ends of the bio-based nylon material is beneficial for improving the tensile strength and toughness of the glass fiber-reinforced bio-based nylon material, and also enhances its wear resistance.

[0015] In some specific embodiments, the raw materials for preparing the aminosilane coupling agent modified long glass fiber include an aminosilane coupling agent and long glass fiber, with a weight ratio of (0.01-0.02):10; the raw materials for preparing the isocyanate-based silane coupling agent modified long glass fiber include an isocyanate-based silane coupling agent and chopped glass fiber, with a weight ratio of (0.025-0.035):10.

[0016] In some specific embodiments, the long glass fiber has a fiber length of 10-15 mm, and the chopped glass fiber has a fiber length of 0.2-0.5 mm.

[0017] In some specific embodiments, the lubricant comprises amide waxes and silicone masterbatches, wherein the weight ratio of the amide waxes to the silicone masterbatches is (3-4):1.

[0018] In some specific embodiments, the antioxidant includes antioxidant 1010 and antioxidant 168, wherein the weight ratio of antioxidant 1010 to antioxidant 168 is (3-4):1; the weathering agent is at least one of UV-P, UV-326, UV-327, UV-329, and UV-1130.

[0019] In some specific embodiments, the peroxy ester initiator is at least one of tert-butyl peroxybenzoate, tert-butyl peroxy-2-ethylhexanoate, tert-butyl peroxyneodecanate, and tert-pentyl peroxyneodecanate.

[0020] Secondly, the preparation method of the glass fiber reinforced bio-based nylon material provided in this application adopts the following technical solution:

[0021] A method for preparing a glass fiber reinforced bio-based nylon material includes the following steps:

[0022] Bio-based nylon, allyl glycidyl ether / allyl epoxy polyoxypropylene ether, bi-terminated alkenyl silicone oil, and peroxide ester initiator are mixed evenly and melted at 180-220℃. Then, the mixture is extruded, cooled, and granulated to obtain modified bio-based nylon. Modified bio-based nylon, aminosilane coupling agent modified long glass fibers, lubricant, antioxidant, and weathering agent are added to the main feed port of a twin-screw extruder and melted at 180-220℃ and 50-100 rpm. Then, isocyanate-based silane coupling agent modified short glass fibers are added to the side feed port of the twin-screw extruder and melted evenly at 180-220℃ and 50-100 rpm. Finally, the mixture is extruded, cooled, and granulated to obtain glass fiber reinforced bio-based nylon material.

[0023] In this application, the aminosilane coupling agent modified long glass fibers and the isocyanate-based silane coupling agent modified short glass fibers are added stepwise, which is more conducive to the effective dispersion of the two. In addition, controlling the appropriate rotation speed helps to ensure the integrity of the aminosilane coupling agent modified long glass fibers and prevents the aminosilane coupling agent modified long glass fibers from breaking into short glass fibers due to shearing during processing.

[0024] Thirdly, the thermal insulation strip provided in this application adopts the following technical solution:

[0025] A thermal insulation strip is made from any of the above-mentioned glass fiber reinforced bio-based nylon materials.

[0026] In this application, the thermal insulation strip is prepared using the glass fiber reinforced bio-based nylon material of this application, which is beneficial to obtaining a thermal insulation strip that combines high strength, high wear resistance and good toughness.

[0027] In summary, this application includes at least the following beneficial technical effects:

[0028] (1) This application utilizes the combined effects of modified bio-based nylon, modified glass fiber, and lubricant to effectively improve the dispersibility of glass fiber in modified bio-based nylon, which is beneficial for obtaining glass fiber reinforced bio-based nylon materials with high strength, good wear resistance, good toughness, and environmental friendliness. Antioxidants can improve the thermal stability of glass fiber reinforced bio-based nylon materials during processing, and the addition of weather-resistant agents can improve the light stability of glass fiber reinforced bio-based nylon materials.

[0029] (2) In this application, allyl glycidyl ether / allyl epoxy polyoxypropylene ether and bi-terminated alkenyl silicone oil are used to modify bio-based nylon. By optimizing the amount of allyl glycidyl ether / allyl epoxy polyoxypropylene ether and bi-terminated alkenyl silicone oil added, it is possible to promote the uniform dispersion of modified glass fibers and improve the strength performance of glass fiber reinforced bio-based nylon materials while preventing the decrease in toughness of glass fiber reinforced bio-based nylon materials. This is beneficial to obtaining glass fiber reinforced bio-based nylon materials with high strength, high wear resistance and good impact toughness.

[0030] (3) In this application, the weight ratio of aminosilane coupling agent-modified long glass fibers and isocyanate-based silane coupling agent-modified short glass fibers is controlled at 1:(3-4). Among them, the toughening performance of long glass fibers is better than that of short glass fibers. In this application, an appropriate amount of aminosilane coupling agent is added to modify long glass fibers. The amino groups on the aminosilane coupling agent-modified long glass fibers can work together with the epoxy groups of the modified bio-based nylon to improve the dispersibility of long glass fibers and improve the toughness of bio-based nylon. The addition of an appropriate amount of isocyanate-based silane coupling agent to modify short glass fibers can improve the stiffness of bio-based nylon. At the same time, the formation of new chemical bonds between the isocyanate groups and the amino groups at the ends of the bio-based nylon material is beneficial to improving the tensile strength and toughness of glass fiber reinforced bio-based nylon material, and can also improve the wear resistance of bio-based nylon material. Detailed Implementation

[0031] The following section provides further explanation of this application in conjunction with specific experiments.

[0032] Preparation Example

[0033]

Preparation Example 1-1

[0034] A type of aminosilane coupling agent modified long glass fiber is prepared by dissolving 0.015 kg of aminosilane coupling agent KH550 in 100 kg of 95% ethanol solution, then adding 10 kg of long glass fiber with a fiber length of 10-15 mm, heating to 60℃ and reacting for 2 h, followed by filtration, washing and drying.

[0035]

Preparation Examples 1-2

[0036] A type of isocyanate-based silane coupling agent modified chopped glass fiber is obtained by ball milling 0.03 kg of γ-isocyanate propyltriethoxysilane with 10 kg of chopped glass fiber with a fiber length of 0.2-0.5 mm.

[0037]

Preparation Examples 1-3

[0038] An aminosilane coupling agent modified chopped glass fiber is prepared by dissolving 0.03 kg of aminosilane coupling agent KH550 in 100 kg of 95% ethanol solution, then adding 10 kg of chopped glass fiber with a fiber length of 0.2-0.5 mm, heating to 60°C and reacting for 2 h, followed by filtration, washing and drying.

[0039] Example

[0040]

Example 1

[0041] A glass fiber reinforced bio-based nylon material is prepared from 20 wt% modified glass fiber, 1 wt% lubricant, 1.2 wt% antioxidant, 1.2 wt% weathering agent, and the balance modified bio-based nylon.

[0042] The modified glass fibers include the aminosilane coupling agent modified long glass fibers prepared in [Preparation Example 1-1] and the isocyanate-based silane coupling agent modified short glass fibers prepared in [Preparation Example 1-2], with a weight ratio of 1:3 between the aminosilane coupling agent modified long glass fibers and the isocyanate-based silane coupling agent modified short glass fibers.

[0043] The lubricant includes bis-stearamide wax and silicone masterbatch, with a weight ratio of 3:1 between the bis-stearamide wax and the silicone masterbatch; the antioxidant includes antioxidant 1010 and antioxidant 168, with a weight ratio of 3:1 between antioxidant 1010 and antioxidant 168.

[0044] The weather resistant agent used is UV-327;

[0045] The modified bio-based nylon was prepared from 10 kg of bio-based nylon PA56 (E-2260), 0.25 kg of allyl glycidyl ether, 0.65 kg of double-ended vinyl silicone oil (viscosity of 350 mPa·s at 25℃) and 0.01 kg of tert-butyl peroxide-2-ethylhexanoate.

[0046] In this embodiment, the preparation method of the glass fiber reinforced bio-based nylon material is as follows:

[0047] Bio-based nylon PA56, allyl glycidyl ether, dual-terminated vinyl silicone oil and tert-butyl peroxide-2-ethylhexanoate were mixed evenly and melted at 180-220℃. Then, the mixture was extruded, cooled and granulated to obtain modified bio-based nylon.

[0048] Modified bio-based nylon, aminosilane coupling agent-modified long glass fibers, lubricant, antioxidant, and weathering agent are added to the main feed port of a twin-screw extruder and melted at 180-220℃ and 60-70rpm. Then, isocyanate-based silane coupling agent-modified short glass fibers are added to the side feed port of the twin-screw extruder and melted uniformly at 180-220℃ and 60-70rpm. Finally, the mixture is extruded, cooled, and granulated to obtain glass fiber reinforced bio-based nylon material.

[0049]

Example 2

[0050] A glass fiber reinforced bio-based nylon material is prepared from 30 wt% modified glass fiber, 3 wt% lubricant, 0.8 wt% antioxidant, 0.8 wt% weathering agent, and the balance modified bio-based nylon.

[0051] The modified glass fibers include the aminosilane coupling agent modified long glass fibers prepared in [Preparation Example 1-1] and the isocyanate-based silane coupling agent modified short glass fibers prepared in [Preparation Example 1-2], with a weight ratio of 1:4 between the aminosilane coupling agent modified long glass fibers and the isocyanate-based silane coupling agent modified short glass fibers.

[0052] The lubricant includes bis-stearamide wax and silicone masterbatch, with a weight ratio of 3:1 between the bis-stearamide wax and the silicone masterbatch; the antioxidant includes antioxidant 1010 and antioxidant 168, with a weight ratio of 3:1 between antioxidant 1010 and antioxidant 168.

[0053] The weather resistant agent used is UV-327;

[0054] The modified bio-based nylon was prepared from 10 kg of bio-based nylon PA56 (E-2260), 0.4 kg of allyl glycidyl ether, 0.85 kg of dual-terminated vinyl silicone oil (viscosity of 350 mPa·s at 25℃) and 0.01 kg of tert-butyl peroxide-2-ethylhexanoate.

[0055] In this embodiment, the preparation method of the glass fiber reinforced bio-based nylon material is as follows:

[0056] Bio-based nylon PA56, allyl glycidyl ether, dual-terminated vinyl silicone oil and tert-butyl peroxide-2-ethylhexanoate were mixed evenly and melted at 180-220℃. Then, the mixture was extruded, cooled and granulated to obtain modified bio-based nylon.

[0057] Modified bio-based nylon, aminosilane coupling agent-modified long glass fibers, lubricant, antioxidant, and weathering agent are added to the main feed port of a twin-screw extruder and melted at 180-220℃ and 80-100rpm. Then, isocyanate-based silane coupling agent-modified short glass fibers are added to the side feed port of the twin-screw extruder and melted uniformly at 180-220℃ and 80-100rpm. Finally, the mixture is extruded, cooled, and granulated to obtain glass fiber reinforced bio-based nylon material.

[0058]

Example 3

[0059] A glass fiber reinforced bio-based nylon material differs from [Example 1] in that:

[0060] The modified bio-based nylon was prepared from 10 kg of bio-based nylon PA56 (E-2260), 1.0 kg of allyl epoxy polyoxypropylene ether (the degree of polymerization of the polyoxypropylene ether is 5), 0.65 kg of double-ended vinyl silicone oil (viscosity of 350 mPa·s at 25℃) and 0.01 kg of tert-butyl peroxide-2-ethylhexanoate.

[0061] In this embodiment, the preparation method of the glass fiber reinforced bio-based nylon material is as follows:

[0062] Bio-based nylon PA56, allyl epoxy polyoxypropylene ether, dual-terminated vinyl silicone oil and tert-butyl peroxide-2-ethylhexanoate were mixed evenly and melted at 180-220℃. Then, the mixture was extruded, cooled and granulated to obtain modified bio-based nylon.

[0063] Modified bio-based nylon, aminosilane coupling agent-modified long glass fibers, lubricant, antioxidant, and weathering agent are added to the main feed port of a twin-screw extruder and melted at 180-220℃ and 60-70rpm. Then, isocyanate-based silane coupling agent-modified short glass fibers are added to the side feed port of the twin-screw extruder and melted uniformly at 180-220℃ and 60-70rpm. Finally, the mixture is extruded, cooled, and granulated to obtain glass fiber reinforced bio-based nylon material.

[0064]

Example 4

[0065] A glass fiber reinforced bio-based nylon material differs from [Example 1] in that:

[0066] The modified bio-based nylon was prepared from 10 kg of bio-based nylon PA56 (E-2260), 2.0 kg of allyl epoxy polyoxypropylene ether (the degree of polymerization of polyoxypropylene ether is 8), 0.65 kg of double-ended vinyl silicone oil (viscosity of 350 mPa·s at 25℃) and 0.01 kg of tert-butyl peroxide-2-ethylhexanoate.

[0067] In this embodiment, the preparation method of the glass fiber reinforced bio-based nylon material is as follows:

[0068] Bio-based nylon PA56, allyl epoxy polyoxypropylene ether, dual-terminated vinyl silicone oil and tert-butyl peroxide-2-ethylhexanoate were mixed evenly and melted at 180-220℃. Then, the mixture was extruded, cooled and granulated to obtain modified bio-based nylon.

[0069] Modified bio-based nylon, aminosilane coupling agent-modified long glass fibers, lubricant, antioxidant, and weathering agent are added to the main feed port of a twin-screw extruder and melted at 180-220℃ and 60-70rpm. Then, isocyanate-based silane coupling agent-modified short glass fibers are added to the side feed port of the twin-screw extruder and melted uniformly at 180-220℃ and 60-70rpm. Finally, the mixture is extruded, cooled, and granulated to obtain glass fiber reinforced bio-based nylon material.

[0070] Comparative Example

[0071] Comparative Example 1

[0072] A glass fiber reinforced bio-based nylon material differs from [Example 1] in that an equal amount of aminosilane coupling agent modified short-cut glass fiber prepared in [Preparation Examples 1-3] is used instead of isocyanate-based silane coupling agent modified short-cut glass fiber prepared in [Preparation Examples 1-2].

[0073] Comparative Example 2

[0074] A glass fiber reinforced bio-based nylon material differs from [Example 1] in that the modified bio-based nylon is prepared from 10 kg of bio-based nylon PA56 (E-2260), 0.25 kg of allyl glycidyl ether and 0.01 kg of tert-butyl peroxide-2-ethylhexanoate.

[0075] Comparative Example 3

[0076] A glass fiber reinforced bio-based nylon material differs from [Example 1] in that the modified bio-based nylon is prepared from 10 kg of bio-based nylon PA56 (E-2260), 0.65 kg of double-ended vinyl silicone oil (viscosity of 350 mPa·s at 25°C), and 0.01 kg of tert-butyl peroxide-2-ethylhexanoate.

[0077] Comparative Example 4

[0078] A glass fiber reinforced bio-based nylon material differs from [Example 3] in that the modified bio-based nylon is prepared from 10 kg of bio-based nylon PA56 (E-2260), 3.5 kg of allyl epoxy polyoxypropylene ether (the degree of polymerization of the polyoxypropylene ether is 5), 1.5 kg of dual-terminated vinyl silicone oil (viscosity at 25°C is 350 mPa·s) and 0.01 kg of tert-butyl peroxide-2-ethylhexanoate.

[0079] Comparative Example 5

[0080] A glass fiber reinforced bio-based nylon material differs from [Example 3] in that the modified bio-based nylon is prepared from 10 kg of bio-based nylon PA56 (E-2260), 3.5 kg of allyl epoxy polyoxypropylene ether (the degree of polymerization of the polyoxypropylene ether is 15), 0.65 kg of double-ended vinyl silicone oil (viscosity of 350 mPa·s at 25°C), and 0.01 kg of tert-butyl peroxide-2-ethylhexanoate.

[0081] Performance testing

[0082] 1. Room temperature transverse tensile properties: Tested according to GB / T 23615.1-2017, test conditions are 5mm / min.

[0083] 2. Low-temperature unnotched impact strength: Tested according to GB / T 23615.1-2017, with test conditions of -30℃±2℃.

[0084] 3. Wear resistance: Tested according to the method of standard GB / T 3960-2016, with a rotation speed of 200 r / min, a test time of 72 h, a load of 196 N, and the mass wear amount recorded.

[0085] Table 1

[0086] Sample Tensile strength (MPa) <![CDATA[Low temperature notch - free impact strength KJ / m 2 > Mass wear amount (mg) Example 1 116.4 97.8 13.4 Example 2 125.8 95.6 11.6 Example 3 118.5 98.5 12.5 Example 4 117.9 98.1 12.9 Comparative Example 1 89.8 80.1 49.8 Comparative Example 2 94.6 79.4 38.5 Comparative Example 3 98.5 81.2 36.1 Comparative Example 4 104.2 84.5 24.2 Comparative Example 5 106.4 88.8 23.7

[0087] Based on the test data in Example 1, Comparative Example 1, and Table 1, it can be seen that when aminosilane coupling agent modified chopped glass fiber is used instead of isocyanate-based silane coupling agent modified chopped glass fiber, the dispersibility of the modified glass fiber and the interfacial bonding strength between the modified glass fiber and the modified bio-based nylon both decrease. Therefore, it is not conducive to obtaining glass fiber reinforced bio-based nylon materials with high strength, good toughness, and good wear resistance.

[0088] Based on the test data in Example 1, Comparative Examples 2-3, and Table 1, it can be seen that when allyl glycidyl ether or bi-terminated alkenyl silicone oil is not incorporated into the modified bio-based nylon, the tensile strength, toughness, and wear resistance of the glass fiber reinforced bio-based nylon material all decrease. Therefore, the synergistic effect of allyl glycidyl ether and bi-terminated alkenyl silicone oil is beneficial to obtaining glass fiber reinforced bio-based nylon material with high strength, good toughness, and good wear resistance.

[0089] Based on the test data in Example 2, Comparative Examples 4-5, and Table 1, it can be seen that the amount of allyl glycidyl ether and di-terminated alkenyl silicone oil incorporated, as well as the degree of polymerization of polyoxypropylene ether in allyl epoxy polyoxypropylene ether, will affect the strength, toughness, and wear resistance of glass fiber reinforced bio-based nylon materials. It is preferable to control the amount of allyl glycidyl ether and di-terminated alkenyl silicone oil incorporated in modified bio-based nylon within the range of this application, and preferably, the degree of polymerization of polyoxypropylene ether in allyl epoxy polyoxypropylene ether is 5-8.

[0090] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this specific embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

Claims

1. A glass fiber reinforced bio-based nylon material, characterized in that: It is made from 20-30 wt% modified glass fiber, 1-3 wt% lubricant, 0.8-1.2 wt% antioxidant, 0.8-1.2 wt% weather resistant agent and the balance modified bio-based nylon; The raw materials for preparing the modified bio-based nylon include bio-based nylon, allyl glycidyl ether / allyl epoxy polyoxypropylene ether, dual-terminated vinyl silicone oil, and peroxide ester initiator. The weight ratio of the bio-based nylon, allyl glycidyl ether, dual-terminated vinyl silicone oil, and peroxide ester initiator is 10:(0.25-0.4):(0.65-0.85):(0.01-0.02), or the weight ratio of the bio-based nylon, allyl epoxy polyoxypropylene ether, dual-terminated vinyl silicone oil, and peroxide ester initiator is 10:(1.0-2.0):(0.65-0.85):(0.01-0.02). The degree of polymerization of the allyl epoxy polyoxypropylene ether is 5-8. The viscosity of the dual-terminated vinyl silicone oil at 25°C is 300-500 mPa·s. The modified glass fiber includes long glass fiber modified with aminosilane coupling agent and short glass fiber modified with isocyanate-based silane coupling agent, wherein the weight ratio of the long glass fiber modified with aminosilane coupling agent to the short glass fiber modified with isocyanate-based silane coupling agent is 1:(3-4).

2. The glass fiber reinforced bio-based nylon material according to claim 1, characterized in that: The raw materials for preparing the aminosilane coupling agent modified long glass fiber include an aminosilane coupling agent and long glass fiber, with a weight ratio of (0.01-0.02):10; the raw materials for preparing the isocyanate-based silane coupling agent modified short glass fiber include an isocyanate-based silane coupling agent and chopped glass fiber, with a weight ratio of (0.025-0.035):

10.

3. The glass fiber reinforced bio-based nylon material according to claim 2, characterized in that: The long glass fiber has a fiber length of 10-15 mm, and the short glass fiber has a fiber length of 0.2-0.5 mm.

4. The glass fiber reinforced bio-based nylon material according to claim 1, characterized in that: The lubricant comprises amide waxes and silicone masterbatch, wherein the weight ratio of the amide waxes to the silicone masterbatch is (3-4):

1.

5. The glass fiber reinforced bio-based nylon material according to claim 1, characterized in that: The antioxidants include antioxidant 1010 and antioxidant 168, and the weight ratio of antioxidant 1010 to antioxidant 168 is (3-4):1; the weathering agent is at least one of UV-P, UV-326, UV-327, UV-329, and UV-1130.

6. A method for preparing a glass fiber reinforced bio-based nylon material as described in any one of claims 1-5, characterized in that: Includes the following steps: Bio-based nylon, allyl glycidyl ether / allyl epoxy polyoxypropylene ether, dual-terminated vinyl silicone oil and peroxy ester initiator are mixed evenly and melted at 180-220℃. Then, the mixture is extruded, cooled and granulated to obtain modified bio-based nylon. Modified bio-based nylon, aminosilane coupling agent-modified long glass fibers, lubricant, antioxidant, and weathering agent are added to the main feed port of a twin-screw extruder and melted at 180-220℃ and 50-100rpm. Then, isocyanate-based silane coupling agent-modified short glass fibers are added to the side feed port of the twin-screw extruder and melted uniformly at 180-220℃ and 50-100rpm. Finally, the mixture is extruded, cooled, and granulated to obtain glass fiber reinforced bio-based nylon material.

7. A heat insulation strip, characterized in that: It is prepared using the glass fiber reinforced bio-based nylon material as described in any one of claims 1-5.