PC / ABS alloy material as well as preparation method and application thereof

Abstract

The invention provides a PC / ABS alloy material as well as a preparation method and application thereof. The PC / ABS alloy material comprises the following components in parts by weight: 54-76 parts of PC resin, 14-40 parts of ABS resin, 2-5 parts of an abnormal sound prevention auxiliary agent and 1-3 parts of a delustering agent. According to the invention, the composition of the PC / ABS alloy material is designed, and the PC / ABS alloy material with ultralow glossiness, abnormal sound resistance and better mechanical properties is prepared through the synergistic effect of the abnormal sound resistance auxiliary agent and the delustering agent.

Description

Technical Field

[0001] The invention belongs to the technical field of PC / ABS alloy materials, and in particular relates to a PC / ABS alloy material and a preparation method and application thereof. Background Art

[0002] In recent years, lightweighting has undoubtedly become the focus of new car research and development. In order to achieve the goal of lightweighting, in addition to optimizing the structure and process design, most of the focus is on the selection of materials, among which replacing steel with plastic is one of the major development trends. Automobile lightweighting has a great impact on energy conservation and emission reduction. For traditional fuel vehicles, every 10% reduction in dead weight can save 5% of fuel. While reducing fuel consumption, exhaust emissions are also reduced, which ultimately reduces pollution to the environment. New energy vehicles have more urgent requirements for lightweighting. Studies have shown that if the weight of a pure electric vehicle is reduced by 10kg, the driving range can be increased by 2.5km. Therefore, from the perspective of the materials used in modern cars, whether it is exterior trim, interior trim, or functional and structural parts, plastic parts can be seen everywhere.

[0003] PC / ABS alloy material combines the excellent properties of the two materials and improves the shortcomings of PC and ABS. Compared with pure PC, PC / ABS alloy has improved fluidity, better processing performance, and reduced stress sensitivity of products; compared with pure ABS, PC / ABS has significantly improved mechanical properties, heat resistance, and flame retardancy, so it is widely used in automotive interior decoration, such as pillars, door panels, center panels, armrests, instrument panel decorations, auxiliary instrument panel decorations, cup holders, etc. As automotive interior decoration, in order to avoid the strong stimulation of light reflection to the driver and bring safety hazards, the interior materials are usually required to have low gloss or matte effect. Currently, there are three common methods to reduce the gloss of interior parts: (1) spraying matte paint, but this is not only costly but also polluting and not environmentally friendly; (2) changing the surface texture of interior parts, that is, using leather grain treatment, but sometimes the gloss of the selected material itself is too high, and satisfactory gloss cannot be obtained through leather grain treatment, which limits its application; (3) directly selecting low-gloss resin injection molding, which has the advantages of low cost and green environmental protection, but has high requirements on the gloss of the material itself.

[0004] PC / ABS alloy materials are important raw materials for interior parts. In order to further improve the application of PC / ABS alloy materials in automotive interior parts, it is very necessary to develop low-gloss PC / ABS alloy materials. At present, low-gloss PC / ABS alloy materials are usually made by adding matting agents. Among them, inorganic matting agents such as titanium dioxide, silicon dioxide, silicate and other fillers or organic matting agents have a large impact on the performance of the material because they are added in large amounts to achieve a low-gloss effect.

[0005] With the explosive development of new energy vehicles in recent years, the engine noise in the cabin environment is getting smaller and smaller. If there is an abnormal noise in the interior, it will be obviously noticed, which brings discomfort to the driver and passengers. Even the driver's bad feeling will affect his attention, which will cause traffic accidents. Automobile interior parts such as door panels, armrest boxes, pillars, dashboards, seat belts, etc. will have abnormal noise due to loose or loose installation. In order to overcome the occurrence of abnormal noise, the traditional method of the existing technology for the above abnormal noise problem is to stick felt or apply lubricating oil on the buckle or guide rail position. However, these methods make the processing method more complicated and increase the processing cost.

[0006] Therefore, it is of great significance to develop a PC / ABS alloy material with both ultra-low gloss and anti-squeak performance. Summary of the invention

[0007] In view of the shortcomings of the prior art, the present invention aims to provide a PC / ABS alloy material and a preparation method and application thereof. The present invention designs the composition of the PC / ABS alloy material and further prepares a PC / ABS alloy material having ultra-low gloss and anti-sound performance and good mechanical properties through the synergistic effect of an anti-sound auxiliary agent and a matting agent.

[0008] To achieve this object, the present invention adopts the following technical solutions:

[0009] In a first aspect, the present invention provides a PC / ABS alloy material, wherein the PC / ABS alloy material comprises the following components in parts by weight:

[0010]

[0011] The anti-sounding auxiliary agent is glycidyl methacrylate grafted polystyrene-ethylene-butadiene-styrene (glycidyl methacrylate grafted SEBS);

[0012] The matting agent is a cross-linked styrene-acrylonitrile copolymer (cross-linked SAN).

[0013] In the present invention, the composition of the PC / ABS alloy material is designed, and further a specific anti-squeak auxiliary agent is used. At the same time, through the synergistic effect of the anti-squeak auxiliary agent and the matting agent, the amount of the matting agent is reduced, and a PC / ABS alloy material with ultra-low gloss and anti-squeak performance and good mechanical properties can be prepared.

[0014] In the present invention, the anti-sounding additive can improve the compatibility of PC / ABS and enhance the toughness of the material on the one hand, and can produce a matte effect on the other hand.

[0015] In the present invention, by introducing the anti-sounding auxiliary agent glycidyl methacrylate to graft polystyrene-ethylene-butadiene-styrene, on the one hand, since the glycidyl methacrylate structure can react with the terminal hydroxyl group of PC resin, the styrene-ethylene-butadiene-styrene structure is partially compatible with the acrylonitrile-styrene in ABS resin, thus improving the compatibility of PC / ABS and enhancing the toughness of the material. At the same time, the solubility parameters of the styrene-ethylene-butadiene-styrene structure and the ABS rubber powder in the ABS resin are quite different, and phase separation will occur during the injection molding process, so that phase separation is easy to occur on the surface to form many small pits or gullies, so that when the incident light reaches the micro-rough surface, the reflection direction of the light will change, and diffuse reflection will occur, thereby producing a matting effect, which can partially reduce the content of the matting agent, and then reduce the influence of the excessive content of the matting agent on the toughness of the material; on the other hand, the anti-sounding auxiliary agent can effectively improve the damping of the product and reduce the vibration amplitude of the product caused by friction contact, thereby achieving the effect of preventing abnormal noise. On this basis, the matting agent (such as cross-linked SAN polystyrene polymer) is introduced to form a concave-convex feeling on the product surface. On the one hand, it can reduce the gloss of the material, and on the other hand, it can also reduce the sticky tendency of the material surface and improve the anti-noise effect.

[0016] In the present invention, the amount of the anti-sounding auxiliary agent is designed to prepare a PC / ABS alloy material with excellent comprehensive performance. If the amount of the anti-sounding auxiliary agent is too small, the mechanical properties of the prepared PC / ABS alloy material are poor, the glossiness is high, and the anti-sounding performance is poor; if the amount of the anti-sounding auxiliary agent is too large, the heat resistance of the prepared PC / ABS alloy material is low and the glossiness is high.

[0017] In the present invention, in the PC / ABS alloy material, the weight proportion of PC resin can be 54 parts, 55 parts, 56 parts, 58 parts, 60 parts, 62 parts, 64 parts, 66 parts, 68 parts, 70 parts, 72 parts, 74 parts or 76 parts.

[0018] In the PC / ABS alloy material, the weight proportion of ABS resin may be 14 parts, 15 parts, 18 parts, 20 parts, 22 parts, 25 parts, 27 parts, 33 parts, 36 parts, 38 parts or 40 parts, etc.

[0019] In the PC / ABS alloy material, the weight proportion of the anti-sounding additive can be 2 parts, 2.2 parts, 2.4 parts, 2.5 parts, 2.7 parts, 3 parts, 3.3 parts, 3.6 parts, 3.8 parts, 4.1 parts, 4.4 parts, 4.6 parts, 4.8 parts or 5 parts, etc.

[0020] In the PC / ABS alloy material, the weight proportion of the matting agent can be 1 part, 1.2 parts, 1.4 parts, 1.6 parts, 1.8 parts, 2 parts, 2.2 parts, 2.4 parts, 2.6 parts, 2.8 parts or 3 parts, etc.

[0021] In the present invention, taking the mass percentage of the sum of all components of the PC / ABS alloy material as 100%, the mass percentage of the PC resin is 55-78%, for example, it can be 55%, 60%, 65%, 70%, 72%, 75% or 78%.

[0022] In the present invention, PC resin is polycarbonate resin, and ABS resin is acrylonitrile-butadiene-styrene copolymer resin.

[0023] The following are preferred technical solutions of the present invention, but are not intended to limit the technical solutions provided by the present invention. Through the following preferred technical solutions, the objectives and beneficial effects of the present invention can be better achieved and realized.

[0024] As a preferred technical solution of the present invention, the melt flow rate of the PC resin at 300°C and 1.2kg is 10-20g / 10min, for example, it can be 10g / 10min, 11g / 10min, 12g / 10min, 13g / 10min, 14g / 10min, 15g / 10min, 16g / 10min, 17g / 10min, 18g / 10min, 19g / 10min or 20g / 10min, etc.

[0025] The present invention can prepare a PC / ABS alloy material with excellent performance by controlling the melt flow rate (MI) of the PC resin at 300°C and 1.2kg within a specific range. If the melt flow rate of the PC resin is too low, the subsequent processing performance of the PC / ABS alloy material will be adversely affected; if the melt flow rate of the PC resin is too high, the heat-resistant processing stability of the PC / ABS alloy material will be poor.

[0026] In the present invention, the melt flow rate of the PC resin at 300° C. and 1.2 kg is tested according to ISO 1133-2012 standard.

[0027] As a preferred technical solution of the present invention, the melt flow rate of the ABS resin at 220°C and 10kg is ≤15g / 10min, for example, it can be 3g / 10min, 5g / 10min, 8g / 10min, 9g / 10min, 10g / 10min, 11g / 10min, 12g / 10min, 13g / 10min, 14g / 10min or 15g / 10min, etc., preferably 3-15g / 10min.

[0028] The present invention can prepare a PC / ABS alloy material with excellent performance by controlling the melt flow rate (MI) of ABS resin at 220°C and 10kg within a specific range. If the melt flow rate of ABS resin is too high, the glossiness of the PC / ABS alloy material will increase and the impact toughness will decrease.

[0029] In the present invention, the melt flow rate of the ABS resin at 220° C. and 10 kg is tested according to ISO 1133-2012 standard.

[0030] As a preferred technical solution of the present invention, the grafting rate of glycidyl methacrylate in the glycidyl methacrylate-grafted polystyrene-ethylene-butadiene-styrene is 0.5-1.5wt%, for example, it can be 0.5wt%, 0.6wt%, 0.7wt%, 0.8wt%, 0.9wt%, 1.0wt%, 1.1wt%, 1.2wt%, 1.3wt%, 1.4wt% or 1.5wt%, etc.

[0031] In the present invention, the method for calculating the grafting rate of glycidyl methacrylate in glycidyl methacrylate grafted polystyrene-ethylene-butadiene-styrene is as follows: weigh a certain mass of glycidyl methacrylate grafted polystyrene-ethylene-butadiene-styrene and add it to 50mL of xylene, add 15mL of 0.05mol / L hydrochloric acid isopropanol standard solution, heat and reflux for 2h, then add 2-3 drops of phenolphthalein ethanol solution, and titrate with 0.05mol / L NaOH-methanol standard solution, record the volume of NaOH-methanol standard solution consumed, and calculate the grafting rate (GD). The calculation formula is as follows:

[0032]

[0033] Wherein: c is the concentration of NaOH-methanol standard solution, mol / L; V0 is the volume of NaOH-methanol standard solution consumed in titrating the blank sample, mL; V is the volume of NaOH-methanol standard solution consumed by the sample during titration, mL; 142.15 is the molar mass of glycidyl methacrylate, g / mol; m is the mass of glycidyl methacrylate grafted polystyrene-ethylene-butadiene-styrene, g.

[0034] In the present invention, the grafting rate of glycidyl methacrylate in glycidyl methacrylate grafted polystyrene-ethylene-butadiene-styrene is controlled within a specific range, so that a PC / ABS alloy material with excellent performance can be prepared. If the grafting rate of glycidyl methacrylate is too low, the compatibility function of the anti-sounding auxiliary agent in the alloy material system is not obvious, resulting in poor toughness of the PC / ABS alloy material; if the content of glycidyl methacrylate is too high, the compatibility function of the anti-sounding auxiliary agent in the alloy material system is too large, resulting in poor phase separation effect during the injection molding process of the PC / ABS alloy material, affecting the purpose of reducing the gloss of the PC / ABS alloy material.

[0035] In the present invention, glycidyl methacrylate grafted polystyrene-ethylene-butadiene-styrene is prepared by the following method, which comprises the following steps:

[0036] (1) Dissolve dicumyl peroxide (0.3-0.8 g) in glycidyl methacrylate (3-10 g), mix well with SEBS (80-100 g) after it is completely dissolved, and add it into a twin-screw extruder for melt grafting reaction. The extruded strips are cooled and pelletized. The temperature of the feed section is 195-210° C., the temperature of the plasticizing section is 210-225° C., the temperature of the homogenizing section is 225-240° C., and the screw speed is 300 rpm;

[0037] (2) The grafted product and toluene (1000-1500 mL) are then added to a heating and dissolving device, refluxed at 110° C. for 2 h, cooled to room temperature, precipitated, and filtered. An appropriate amount of isopropanol is then poured into the precipitate and filtered 2-3 times. The obtained product is placed in an oven and dried for at least 2 h to obtain the glycidyl methacrylate grafted polystyrene-ethylene-butadiene-styrene.

[0038] Preferably, the particle size of the cross-linked styrene-acrylonitrile copolymer is ≤25 mesh, for example, it can be 5 mesh, 6 mesh, 7 mesh, 8 mesh, 9 mesh, 10 mesh, 11 mesh, 12 mesh, 13 mesh, 14 mesh, 15 mesh, 16 mesh, 17 mesh, 18 mesh, 19 mesh, 20 mesh, 21 mesh, 22 mesh, 23 mesh, 24 mesh or 25 mesh, etc., preferably 5 mesh-25 mesh.

[0039] In the present invention, the cross-linked styrene-acrylonitrile copolymer illustratively includes but is not limited to: BMAT purchased from Sabic.

[0040] As a preferred technical solution of the present invention, the PC / ABS alloy material also includes 0.5-2 parts by weight of processing aids, for example, 0.5 parts by weight, 0.6 parts by weight, 0.7 parts by weight, 0.8 parts by weight, 0.9 parts by weight, 1 part by weight, 1.1 parts by weight, 1.2 parts by weight, 1.3 parts by weight, 1.4 parts by weight, 1.5 parts by weight, 1.6 parts by weight, 1.7 parts by weight, 1.8 parts by weight, 1.9 parts by weight or 2 parts by weight, etc.

[0041] Preferably, the processing aid comprises any one of an antioxidant, a light stabilizer or a lubricant, or a combination of at least two of them.

[0042] It should be noted that the present invention does not have any special restrictions on the specific selection of antioxidants, light stabilizers, and lubricants, and the antioxidants, light stabilizers, and lubricants commonly used in the art are all applicable.

[0043] As a preferred technical solution of the present invention, the PC / ABS alloy material also includes 0.5-2 parts by weight of black masterbatch, for example, 0.5 parts by weight, 0.6 parts by weight, 0.7 parts by weight, 0.8 parts by weight, 0.9 parts by weight, 1 part by weight, 1.1 parts by weight, 1.2 parts by weight, 1.3 parts by weight, 1.4 parts by weight, 1.5 parts by weight, 1.6 parts by weight, 1.7 parts by weight, 1.8 parts by weight, 1.9 parts by weight or 2 parts by weight, etc.

[0044] Preferably, the black masterbatch comprises carbon black loaded SAN masterbatch.

[0045] Preferably, the carbon black loading of the carbon black loaded SAN masterbatch is 30-40wt%, for example, it can be 30wt%, 31wt%, 32wt%, 33wt%, 34wt%, 35wt%, 36wt%, 37wt%, 38wt%, 39wt% or 40wt%, etc.

[0046] In a second aspect, the present invention provides a method for preparing the PC / ABS alloy material as described in the first aspect, the preparation method comprising the following steps:

[0047] The components of the PC / ABS alloy material are mixed, melt-extruded, and granulated to obtain the PC / ABS alloy material.

[0048] As a preferred technical solution of the present invention, the mixing method includes mixing using a high-speed mixer.

[0049] Preferably, the mixing time is 3-5 min, for example, 3 min, 3.5 min, 4 min, 4.5 min or 5 min.

[0050] As a preferred technical solution of the present invention, the melt extrusion method comprises using a twin-screw extruder for melt extrusion granulation, wherein the process parameters of the melt extrusion are: the feeding section temperature is 180-200°C (for example, it can be 180°C, 182°C, 184°C, 186°C, 188°C, 190°C, 192°C, 194°C, 196°C, 198°C or 200°C), the plasticizing section temperature is 210-230°C (for example, it can be 210°C, 212°C, 214°C, 216°C, 218°C, 220°C, 222°C, 224°C, 226°C , 228℃ or 230℃, etc.), the temperature of the homogenizing section is 240-260℃ (for example, it can be 240℃, 242℃, 244℃, 246℃, 248℃, 250℃, 252℃, 254℃, 256℃, 258℃ or 260℃, etc.), and the screw speed is 300-600rpm (for example, it can be 300rpm, 330rpm, 360rpm, 380rpm, 400rpm, 420rpm, 460rpm, 500rpm, 520rpm, 550rpm, 570rpm or 600rpm, etc.).

[0051] In a third aspect, the present invention provides an application of the PC / ABS alloy material as described in the first aspect, wherein the PC / ABS alloy material is used to prepare interior decoration parts of automobiles.

[0052] Compared with the prior art, the present invention has the following beneficial effects:

[0053] (1) The present invention designs the composition of the PC / ABS alloy material and further prepares a PC / ABS alloy material having both ultra-low gloss and anti-squeak performance and good mechanical properties through the synergistic effect of a specific anti-squeak auxiliary agent and a matting agent, making it suitable for preparing automotive interior decoration parts.

[0054] (2) The present invention further improves the comprehensive performance of the PC / ABS alloy material by the synergistic effect of glycidyl methacrylate grafted polystyrene-ethylene-butadiene-styrene and cross-linked styrene-acrylonitrile copolymer with a specific grafting rate, and controls the melt flow rate of the PC resin at 300°C and 1.2 kg and the melt flow rate of the ABS resin at 220°C and 10 kg within a specific range, so that the notched impact strength of the PC / ABS alloy material is ≥60J, specifically 60-78J, the heat deformation temperature is greater than 95°C, specifically 99-108°C, the melt flow rate is 13-26g / 10min, the gloss is ≤3.1GU, specifically 2.4-3.1GU, and the noise prevention property is level 1 or 2. DETAILED DESCRIPTION

[0055] For the convenience of understanding the present invention, the present invention lists the following embodiments. It should be understood by those skilled in the art that the embodiments are only to help understand the present invention and should not be regarded as specific limitations of the present invention.

[0056] The sources of some components in the embodiments and comparative examples are shown in Table 1 below:

[0057] Table 1

[0058]

[0059]

[0060] Wherein, the preparation method of the anti-sounding auxiliary agent is as follows:

[0061] (1) Dissolve dicumyl peroxide (0.5 g) in glycidyl methacrylate, mix well with SEBS (100 g) after it is completely dissolved, and add it into a twin-screw extruder for melt grafting reaction. The extruded strips are cooled and pelletized. The temperature of the feed section is 195-210° C., the temperature of the plasticizing section is 210-225° C., the temperature of the homogenizing section is 225-240° C., and the screw speed is 300 rpm;

[0062] (2) Then the grafted product and toluene (1200 mL) were added to a heating and dissolving device, refluxed at 110° C. for 2 h, cooled to room temperature, precipitated, filtered, and an appropriate amount of isopropanol was poured into the precipitate and filtered 2-3 times. The obtained product was placed in an oven and dried for at least 2 h to obtain the anti-sounding auxiliary agent;

[0063] Among them, by adjusting the amount of GMA, other anti-squeak additives GMA-g-SEBS with corresponding grafting rates can be obtained, and the grafting rates are shown in Table 1 above.

[0064] Example 1-Example 17, Comparative Example 1-Comparative Example 4

[0065] Example 1 to Example 17 and Comparative Examples 1 to Comparative Examples 4 respectively provide a PC / ABS alloy material, and the components of the PC / ABS alloy material and the amount of each component are shown in Table 2 to Table 4 below (the amount of each component in Table 2 to Table 4 is in parts by weight).

[0066] The preparation method of the above PC / ABS alloy material is as follows:

[0067] The components of the PC / ABS alloy material are added to a high-speed mixer and mixed for 5 minutes to obtain a mixture, and the mixture is added to a twin-screw extruder through a main feed port, and the target PC / ABS alloy material is obtained through melt extrusion and granulation;

[0068] The process parameters of melt extrusion are as follows: feeding section temperature is 200°C, plasticizing section temperature is 230°C, homogenizing section temperature is 250°C, and screw speed is 500rpm.

[0069] The properties of the PC / ABS alloy materials provided in the above embodiments and comparative examples were tested, and the specific testing methods are as follows:

[0070] (1) Charpy notched impact strength: According to ISO-179-1:2010 standard, each product was injection molded into a 80 mm × 10 mm × 4 mm specimen, and the impact energy tested after mechanical notch was 4 J;

[0071] (2) Heat deformation temperature: tested according to ISO-75-2:2013 standard, test conditions are 1.8MPa, 120℃ / min;

[0072] (3) Melt flow rate: tested according to ISO 1133-1-2011 standard, test conditions: 260°C / 5kg;

[0073] (4) Tensile strength: According to ISO 527-2-2012, each product was injection molded into 1A specimens and the tensile test speed was 50 mm / min;

[0074] (5) Gloss: The surface gloss of a 3 mm thick injection molded Volkswagen K31 leather color plate was tested at 60° using a Garden Gloss Meter according to ASTM D523 and recorded in gloss units (GU);

[0075] (6) Anti-sound performance: The test was conducted according to standard VDA230-206-2005, with the test conditions of 40N and a speed of 4mm / s. The RPN value of each product was recorded. RPN has 1 to 10 levels. RPN = 1 to 3 is judged as anti-sound performance; RPN = 4 to 6 is judged as medium noise; RPN = 7 to 10 is judged as high noise.

[0076] The above performance test results are shown in Table 2-Table 4 below:

[0077] Table 2

[0078]

[0079] Table 3

[0080]

[0081]

[0082] Table 4

[0083]

[0084] The present invention designs the composition of the PC / ABS alloy material, and further prepares the PC / ABS alloy material with ultra-low gloss and anti-sound performance and good mechanical properties through the synergistic effect of a specific anti-sound auxiliary agent and a matting agent. The PC / ABS alloy material has a simply supported beam notched impact strength greater than 50 J, specifically 52 to 78 J, a heat deformation temperature greater than 95° C., specifically 97 to 108° C., a melt flow rate of 8 to 26 g / 10 min, a tensile strength of 49 to 55 MPa, a gloss of ≤3.5 GU, specifically 2.4 to 3.5 GU, and anti-sound performance of level 1 or 2.

[0085] It can be seen from the contents of Example 1 and Examples 5-11 that the present application can further improve the PC / ABS alloy material by controlling the melt flow rate of PC resin at 300°C and 1.2kg and the melt flow rate of ABS resin at 220°C and 10kg within a specific range. The simply supported beam notched impact strength is ≥60J, specifically 60-78J, the heat deformation temperature is >95°C, specifically 99-108°C, the melt flow rate is 13-26g / 10min, the gloss is ≤3.1GU, specifically 2.4-3.1GU, and the anti-abnormal noise property is level 1 or 2.

[0086] It can be seen from the contents of Example 1 and Examples 12-17 and Comparative Examples 1-3 that the present application uses glycidyl methacrylate with a specific grafting rate to graft polystyrene-ethylene-butadiene-styrene as an anti-noise aid and controls its dosage within a specific range, thereby further improving the comprehensive performance of the PC / ABS alloy material.

[0087] It can be seen from the contents of Example 1 and Comparative Examples 4-5 that the present invention prepares a PC / ABS alloy material having both ultra-low gloss and anti-squeak performance as well as good mechanical properties through the synergistic effect of the anti-squeak auxiliary agent and the matting agent.

[0088] In summary, the present invention designs the composition of the PC / ABS alloy material, and further prepares a PC / ABS alloy material with ultra-low gloss and anti-squeak performance as well as good mechanical properties through the synergistic effect of a specific anti-squeak additive and a matting agent, making it suitable for preparing automotive interior decoration parts.

[0089] The applicant declares that the present invention illustrates the detailed process flow of the present invention through the above-mentioned embodiments, but the present invention is not limited to the above-mentioned detailed process flow, that is, it does not mean that the present invention must rely on the above-mentioned detailed process flow to be implemented. Those skilled in the art should understand that any improvement of the present invention, equivalent replacement of various raw materials of the product of the present invention, addition of auxiliary components, selection of specific methods, etc., all fall within the protection scope and disclosure scope of the present invention.

Claims

1. A PC / ABS alloy material, characterized in that: The PC / ABS alloy material comprises the following components in parts by weight: The anti-sounding auxiliary agent is glycidyl methacrylate grafted polystyrene-ethylene-butadiene-styrene; The matting agent is a cross-linked styrene-acrylonitrile copolymer.

2. The PC / ABS alloy material according to claim 1, characterized in that: The PC resin has a melt flow rate of 10-20 g / 10 min at 300° C. and 1.2 kg.

3. The PC / ABS alloy material according to claim 1, characterized in that: The melt flow rate of the ABS resin at 220° C. and 10 kg is ≤15 g / 10 min.

4. The PC / ABS alloy material according to claim 1, characterized in that: The grafting rate of glycidyl methacrylate in the glycidyl methacrylate grafted polystyrene-ethylene-butadiene-styrene is 0.5-1.5 wt %.

5. The PC / ABS alloy material according to claim 1, characterized in that: The particle size of the cross-linked styrene-acrylonitrile copolymer is ≤25 mesh.

6. The PC / ABS alloy material according to claim 1, characterized in that: The PC / ABS alloy material also includes 0.5-2 parts by weight of a processing aid.

7. The PC / ABS alloy material according to claim 6, characterized in that: The processing aid includes any one of an antioxidant, a light stabilizer or a lubricant, or a combination of at least two of them.

8. The PC / ABS alloy material according to claim 1, characterized in that: The PC / ABS alloy material further comprises 0.5-2 parts by weight of black masterbatch; Preferably, the black masterbatch comprises carbon black loaded SAN masterbatch; Preferably, the carbon black loading amount of the carbon black loaded SAN masterbatch is 30-40wt%.

9. A method for preparing the PC / ABS alloy material according to any one of claims 1 to 8, characterized in that: The preparation method comprises the following steps: The components of the PC / ABS alloy material are mixed, melt-extruded, and granulated to obtain the PC / ABS alloy material.

10. An application of the PC / ABS alloy material according to any one of claims 1 to 8, characterized in that: The PC / ABS alloy material is used for preparing interior decoration parts of automobiles.

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