Modified nylon glass fiber reinforced resin material and preparation method thereof

Abstract

The invention relates to a modified nylon glass fiber reinforced resin material and a preparation method thereof, and belongs to the technical field of polyamide 6-based high polymer materials, and the modified nylon glass fiber reinforced resin material comprises the following components by weight: 80-85% of PA6, 15% of glass fiber, 1% of color master batch, and 1% of other additives. Aiming at the problem of low impact strength in the prior art, the invention provides the modified nylon glass fiber reinforced resin material with high impact strength and the preparation method thereof.

Description

Technical Field

[0001] The present application belongs to the technical field of polymer materials based on polyamide 6, and specifically relates to a modified nylon glass fiber reinforced resin material and a preparation method thereof. Background Art

[0002] Lightweighting and high performance are the best ways to solve energy conservation, environmental protection and safety issues in the automotive, aerospace and other industries at home and abroad. Modified nylon glass fiber reinforced resin materials are lighter than metals, have similar or even better performance than metal materials, are more corrosion-resistant, have high production efficiency, are green and environmentally friendly in production and processing, and can be recycled. This gives them huge application potential in the automotive, aerospace, military, electronics and other industries, and they are increasingly becoming a research focus and hotspot.

[0003] A modified nylon composite material and a preparation method thereof with application number 202210498142.X. The modified nylon composite material includes the following components in weight percentage: PA6 resin 58%-89%, laser auxiliary agent 5%-20%, glass fiber 5%-20%, coupling agent 0.5%-1%, and processing auxiliary agent 0.5%-1%; the laser auxiliary agent is basic copper carbonate.

[0004] The impact strength of the above materials is 9-12KJ / m 2 , this value is too low to meet the requirements of current products. Summary of the invention

[0005] The purpose of the present invention is to provide a modified nylon glass fiber reinforced resin material with high impact strength and a preparation method thereof in view of the problem of low impact strength in the prior art.

[0006] In order to achieve the above technical objectives, the following technical solutions are provided. In the first aspect: a modified nylon glass fiber reinforced resin material comprises the following components in weight percentage: PA6 80-85%, glass fiber 15%, masterbatch 1%, and other additives 1%.

[0007] In an embodiment, the following components are included in weight percentage: PA6 82-85%, glass fiber 15%, masterbatch 1%, and other additives 1%.

[0008] In an embodiment, the additive includes 0.3% of carbon nanotubes and 0.7% of silane coupling agent KH570.

[0009] In an embodiment, the glass fiber is glass fiber of type EWR200-100.

[0010] In an embodiment, the glass fiber is a surface-modified glass fiber, and the modification method is that the glass fiber is treated with a polyhydroxyamine-based polyether solution.

[0011] In a second aspect, according to any one of the methods for preparing a modified nylon glass fiber reinforced resin material in the first aspect,

[0012] 1. Modify the glass fiber to obtain CGF;

[0013] 2. Dry the PA6 resin to obtain material A; evenly mix the masterbatch and other additives according to the weight ratio to obtain material B;

[0014] 3. Evenly mix the CGF in the first step and the material B in the second step to obtain a mixed material C;

[0015] 4. The mixed material C in the third step is poured into a mold with a certain temperature for polymerization. After polymerization for a certain period of time, the mixed material C is formed. After cooling, the mixed material C is demolded to obtain a modified nylon glass fiber reinforced resin material.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The final product performance of this application is a tensile strength of 112Mpa and a density of 1.25g / cm 2 , mass melt index 120g / 10min. The unnotched impact strength of the cantilever beam produced with this material is 35KJ / m 2 , cantilever beam notched impact strength is 6KJ / m 2 The cantilever beam unnotched impact strength is much greater than the impact strength in the prior art.

[0018] The composite material produced by the present invention can be applied to automobile engine peripherals and interior and exterior decoration products, has a friendly processing environment and meets the material selection requirements of major OEMs such as BYD and Chery. DETAILED DESCRIPTION

[0019] Below in conjunction with specific embodiment, further elaborate content of the present invention.It should be emphasized that these embodiments are only used for further explanation of the present invention, and can not be interpreted as limiting the scope of protection of the present invention.In addition, it should be understood that after reading the content described in the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope limited by the appended claims of the application.

[0020] Embodiment 1: The high temperature resistant modified black nylon laser penetrating material of this embodiment includes the following components in weight percentage: PA6 82%, glass fiber 15%, masterbatch 1%, and other additives 1%.

[0021] The additive is a mixture of 0.3% carbon nanotubes and 0.7% silane coupling agent KH570, and the glass fiber is a glass fiber of model EWR200-100.

[0022] And the preparation steps of this embodiment are:

[0023] 1. Modify the glass fiber to obtain CGF;

[0024] First, ultrasonicate CGF in acetone (AC) for 1 hour, then soak it for 2 hours to remove the slurry on the surface of CGF, and wash CGF with deionized water to remove the residue on the surface of CGF. Mix anhydrous ethanol and deionized water in a mass ratio of 9:1 to obtain an ethanol aqueous solution, then add different amounts of AP, stir for 0.5 hours to fully hydrolyze AP, and prepare an AP aqueous solution. Immerse CGF in the prepared AP aqueous solution and soak it for 5 hours. Finally, fully dry CGF in an oven at 120°C for use.

[0025] 2. Dry the PA6 resin to obtain material A; evenly mix the masterbatch and other additives according to the weight ratio to obtain material B;

[0026] 3. Evenly mix the CGF in the first step and the material B in the second step to obtain a mixed material C;

[0027] 4. The mixed material C in the third step is poured into a mold with a certain temperature for polymerization. After polymerization for a certain period of time, the mixed material C is formed. After cooling, the mixed material C is demolded to obtain a modified nylon glass fiber reinforced resin material.

[0028] Embodiment 2: The high temperature resistant modified black nylon laser penetrating material of this embodiment includes the following components in percentage by weight: PA6 85%, glass fiber 15%, masterbatch 1%, and other additives 1%.

[0029] The additive is a mixture of 0.3% carbon nanotubes and 0.7% silane coupling agent KH570, and the glass fiber is a glass fiber of model EWR200-100.

[0030] And the preparation steps of this embodiment are:

[0031] 1. Modify the glass fiber to obtain CGF;

[0032] First, ultrasonicate CGF in acetone (AC) for 1 hour, then soak it for 2 hours to remove the slurry on the surface of CGF, and wash CGF with deionized water to remove the residue on the surface of CGF. Mix anhydrous ethanol and deionized water in a mass ratio of 9:1 to obtain an ethanol aqueous solution, then add different amounts of AP, stir for 0.5 hours to fully hydrolyze AP, and prepare an AP aqueous solution. Immerse CGF in the prepared AP aqueous solution and soak it for 5 hours. Finally, fully dry CGF in an oven at 120°C for use.

[0033] 2. Dry the PA6 resin to obtain material A; evenly mix the masterbatch and other additives according to the weight ratio to obtain material B;

[0034] 3. Evenly mix the CGF in the first step and the material B in the second step to obtain a mixed material C;

[0035] 4. The mixed material C in the third step is poured into a mold with a certain temperature for polymerization. After polymerization for a certain period of time, the mixed material C is formed. After cooling, the mixed material C is demolded to obtain a modified nylon glass fiber reinforced resin material.

[0036] The impact test method for the above embodiment is to use a ZBC-1151-1 impact tester to perform impact test on the sample according to the national standard GB / T1451-2005, using a 120mm×10mm sample with a notch size of R(0.3±0.05)mm. Finally, the impact strength of embodiment 1 and embodiment 2 is measured as shown in Table 1:

[0037] First Test Second test Third test Fourth test Fifth test Embodiment 1 <![CDATA[34.3KJ / m 2 ]]> <![CDATA[35.0KJ / m 2 ]]> <![CDATA[35.1KJ / m 2 ]]> <![CDATA[34.8KJ / m 2 ]]> <![CDATA[34.6KJ / m 2 ]]> Embodiment 2 <![CDATA[35.1KJ / m 2 ]]> <![CDATA[35.5KJ / m 2 ]]> <![CDATA[34.5KJ / m 2 ]]> <![CDATA[34.9KJ / m 2 ]]> <![CDATA[35.5KJ / m 2 ]]>

[0038] Table 1

[0039] The impact strength of the composite material made of CGF treated with AC is higher than that of the composite material made of untreated CGF, which indicates that the AC treatment removes the impregnation agent on the surface of CGF and improves the larger voids inside the composite material. The impact strength of general composite materials is between 9-12KJ / m 2 The present invention can improve the impact strength to 35KJ / m through the above formula and process. 2 about.

Claims

1. A modified nylon glass fiber reinforced resin material, characterized in that: The invention comprises the following components in weight percentage: PA6 80-85%, glass fiber 15%, masterbatch 1%, and other additives 1%.

2. The modified nylon glass fiber reinforced resin material according to claim 1, characterized in that: The invention comprises the following components in weight percentage: PA6 82-85%, glass fiber 15%, masterbatch 1%, and other additives 1%.

3. The modified nylon glass fiber reinforced resin material according to claim 1 or 2, characterized in that: The additives include 0.3% of carbon nanotubes and 0.7% of silane coupling agent KH570.

4. The modified nylon glass fiber reinforced resin material according to claim 3, characterized in that: The glass fiber is a glass fiber of model EWR200-100.

5. The modified nylon glass fiber reinforced resin material according to claim 4, characterized in that: The glass fiber is a surface-modified glass fiber, and the modification method is that the glass fiber is treated with a polyhydroxyamine-based polyether solution.

6. The method for preparing a modified nylon glass fiber reinforced resin material according to any one of claims 1 to 5, characterized in that:

1. Modify the glass fiber to obtain CGF; 2. Dry the PA6 resin to obtain material A; evenly mix the masterbatch and other additives according to the weight ratio to obtain material B; 3. Evenly mix the CGF in the first step and the material B in the second step to obtain a mixed material C; 4. The mixed material C in the third step is poured into a mold with a certain temperature for polymerization. After polymerization for a certain period of time, the mixed material C is formed. After cooling, the mixed material C is demolded to obtain a modified nylon glass fiber reinforced resin material.