PC / ABS / GF composite material and preparation method and application thereof

Abstract

The invention belongs to material modification, and relates to a polycarbonate composite material, in particular to a PC / ABS / GF composite material as well as a preparation method and application thereof. The PC / ABS / GF composite material is prepared by melting and mixing raw materials including PC resin, AS resin, ABS resin, glass fibers, a flexibilizer, a coupling agent, an auxiliary agent and color master batch. In the prior art, polycarbonate extrusion needs participation of auxiliaries such as an antioxidant, a weather-proof agent and a lubricating agent, yellowing control is facilitated, but the heat retention process in production is unfavorable. On the basis of a polycarbonate system, through material compounding, the heat retention capacity is improved on the basis of keeping the excellent mechanical property of direct extrusion.

Description

Technical Field

[0001] The invention belongs to material modification and relates to a polycarbonate composite material, specifically a PC / ABS / GF composite material and a preparation method and application thereof. Background Art

[0002] The full name of PC material is polycarbonate, which is a thermoplastic engineering plastic. The strength of PC material is several times higher than that of other materials, and it has good high temperature resistance and strong corrosion resistance; however, the material is very sensitive to notches, easily affected by ultraviolet rays, sensitive to moisture, and easy to absorb moisture, resulting in changes in product size and decreased mechanical properties. ABS resin is acrylonitrile-butadiene-styrene copolymer, which is a thermoplastic polymer material structure with high strength, good toughness, and easy processing and molding. ABS material has excellent mechanical properties, excellent impact strength, can be used at low temperatures, good dimensional stability, and strong corrosion resistance; however, ABS material has poor weather resistance and poor solvent resistance. Glass fiber is an inorganic non-metallic material with excellent performance. Its advantages are good insulation, strong corrosion resistance, and good heat resistance. It is usually used as a reinforcing material. Its biggest feature is its high tensile strength.

[0003] In the prior art, polycarbonate extrusion requires the participation of additives such as antioxidants, weathering agents, and lubricants, which are beneficial to controlling yellowing, but are disadvantageous to the heat retention process in production. Therefore, it is necessary to improve the heat retention capacity on the basis of the polycarbonate system by compounding materials while maintaining the excellent mechanical properties of direct extrusion. Summary of the invention

[0004] Existing polycarbonate materials have good direct extrusion performance, but poor heat retention capacity. The present invention improves heat retention capacity on the basis of the polycarbonate system by compounding materials while maintaining excellent mechanical properties of direct extrusion. The modified PC+ABS-GF material of the present invention has the advantages of high impact resistance and high heat resistance, especially good heat retention performance, and can be used in automobile interior decoration real wood and real aluminum, interior and exterior decoration pillars, and instrument panel accessories and other automobile parts.

[0005] The present invention adopts the following technical scheme.

[0006] A PC / ABS / GF composite material, the preparation raw materials of which include PC resin, AS resin, ABS resin, glass fiber, toughening agent, coupling agent, auxiliary agent and masterbatch.

[0007] The invention discloses a method for preparing the PC / ABS / GF composite material, comprising the following steps: melting and mixing raw materials including PC resin, AS resin, ABS resin, glass fiber, toughening agent, coupling agent, auxiliary agent and masterbatch to obtain the PC / ABS / GF composite material.

[0008] Preferably, the present invention uses PC resin, AS resin, ABS resin, glass fiber, toughening agent, coupling agent, auxiliary agent and masterbatch as raw materials to prepare PC / ABS / GF composite material, and improves heat retention capacity on the basis of maintaining excellent mechanical properties of direct extrusion.

[0009] In the present invention, melt mixing is a conventional technical means and can be achieved by using an extruder.

[0010] As an example, the materials used in the present invention except glass fiber are fully mixed with other main materials and directly enter into a twin-screw extruder for melting processing. At the same time, the glass fiber enters from the side feed port of the screw to start granulation to obtain the above-mentioned PC / ABS / GF composite material.

[0011] In the present invention, the glass fiber is short glass fiber; and the coupling agent is a silane coupling agent.

[0012] In the present invention, the mass percentages of PC resin, AS resin, ABS resin, glass fiber and toughening agent are respectively the balance, (15%-30%), (1%-10%), (15%-25%) and (1%-10%), and the mass sum of PC resin, AS resin, ABS resin, glass fiber and toughening agent is 100%.

[0013] Preferably, the mass percentages of PC resin, AS resin, ABS resin, glass fiber and toughening agent are respectively the balance, (17% to 25%), (2% to 7%), (17% to 23%) and (2% to 8%), and the mass sum of PC resin, AS resin, ABS resin, glass fiber and toughening agent is 100%.

[0014] In the present invention, the mass percentages of the coupling agent, the auxiliary agent and the masterbatch are (0.5%-1.5%), (1%-3%) and (0.5%-1.5%) respectively, and the mass sum of the PC resin, the AS resin, the ABS resin, the glass fiber and the toughening agent is 100%.

[0015] Preferably, the mass percentages of coupling agent, auxiliary agent and masterbatch are (0.8%-1%), (2%-2.5%) and (0.7%-1.3%) respectively, and the mass sum of PC resin, AS resin, ABS resin, glass fiber and toughening agent is 100%.

[0016] The invention discloses application of the PC / ABS / GF composite material in preparing glass fiber reinforced polycarbonate material.

[0017] The invention discloses application of the PC / ABS / GF composite material in preparing polycarbonate products.

[0018] The invention discloses application of the PC / ABS / GF composite material in preparing automobile materials.

[0019] The invention discloses the application of the PC / ABS / GF composite material in preparing a heat retention enhanced polycarbonate material, or in improving the heat retention capacity of a polycarbonate material.

[0020] The invention discloses an automobile material, which is prepared by preparing a glass fiber reinforced polycarbonate material from the PC / ABS / GF composite material.

[0021] The present invention mainly solves the problem of thermal retention performance deviation of existing glass fiber reinforced polycarbonate. By combining resin with additives, the advantages of the material are maximized. By comparing the performance of existing materials and thermal retention data, it can be determined that the present invention improves the thermal retention capacity while maintaining the excellent mechanical properties of direct extrusion. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a picture of the real wood product conventionally prepared by the particles of Example 1 at the production end.

[0023] Figure 2 This is a picture of the real aluminum product conventionally prepared by the particles of Example 1 at the production end. DETAILED DESCRIPTION

[0024] The present invention uses PC resin, AS resin, ABS resin, glass fiber, toughening agent, coupling agent, auxiliary agent and masterbatch as raw materials to prepare PC / ABS / GF composite material, and improves heat retention capacity on the basis of maintaining excellent mechanical properties of direct extrusion. As an example, the materials used in the present invention, except for glass fiber, are fully mixed and directly enter the twin-screw extrusion melting process, while the glass fiber enters from the side feed port of the screw to start granulation to obtain the above PC / ABS / GF composite material.

[0025] In the present invention, the formula composition of raw materials is as follows: Polycarbonate resin 45-55% AS resin 20-25% ABS resin 3-6% Glass fiber 18-22% Toughener 3-5% Other processing additives 2-2.5% AS carrier high gloss black masterbatch 0.8-1.1% Coupling agent 0.8-1% The following is an explanation of the technical progress of the present invention through specific experiments. The raw materials are existing products, and the specific preparation operations and performance tests are all conventional techniques.

[0026] Material description.

[0027] Polycarbonate resin: Luxi LXY1609T-11; ABS rubber powder: Kumho HR181; AS resin: Chimei 138H; ABS resin: Shanghai Gaoqiao 8391; Glass fiber: Jiekuang short glass fiber ECS13-03-510; Toughening agent: Jinchangshu impact modifier ADX-635W; Coupling agent: Dow Corning KH550; Other processing aids: Commonly used antioxidants, lubricants, heat stabilizers, etc. Combination experiments use equal proportions of antioxidant 168-0.2, antioxidant 1076-0.1, lubricant TAF-1, and heat stabilizer V03-1.

[0028] Masterbatch: AS carrier high gloss black masterbatch, AS1559.

[0029] The formulas of the embodiments and comparative examples are shown in Table 1, and the processing methods are as follows: Except for glass fiber, the other main materials are mixed conventionally and directly enter the conventional twin-screw extruder for melting processing. At the same time, the glass fiber enters from the side feed port of the screw. The main engine speed is 500rpm, the temperature is 200-245℃, and granulation begins.

[0030] The testing methods for the materials are as follows: Tensile strength: The test is carried out according to the method specified in ISO 527, using 1A dumbbell specimens, the test speed is 50mm / min, and the requirement is ≥110MPa.

[0031] Cantilever beam notch (23°C): Test according to the method specified in ISO 180. Sample size: (80±2) mm×(10±0.2) mm×(4±0.2) mm, 2.75J pendulum, notch type: A type, the notch should be machined after the spline is injection molded, and the requirement is ≥9kj / m 2 .

[0032] Flexural modulus: Test according to the method specified in GB / T 9341. Sample size: (80±2) mm×(10±0.2) mm×(4±0.2) mm, test speed is 2 mm / min, requirement is ≥6200 MPa.

[0033] Vicat softening temperature: Tested in accordance with the B50 method specified in GB / T 1633. Sample size: (10±2) mm×(10±0.2)mm×(4±0.2)mm, unit: ℃, requirement ≥120.

[0034] Heat retention operation: dry the material before the experiment, heat up the injection molding equipment to clean the screw and set it for use, set the temperature (250℃) and other processes, and set the storage position to the maximum. Then store the baked material and let it stay in the injection molding machine screw for 20 minutes to inject the sample strip. Only three sample strips are retained for testing after one stop. The heat retention retention rate is required to be ≥85%.

[0035] Density: Tested in accordance with method A of ISO 1183-1. Unit: g / cm 3 , requirement is 1.27±0.02.

[0036] Table 1 Examples and Comparative Examples

[0037] Table 2 Performance of Examples and Comparative Examples

[0038] Figure 1 This is a picture of a real wood product conventionally prepared by the particles in Example 1 at the production end. Figure 2 This is a picture of the real aluminum product conventionally prepared by the particles of Example 1 at the production end. Example 2

[0039] Refer to Example 1, wherein 21 kg of AS resin and 4 kg of ABS resin are used, and the rest are the same.

[0040] Except for glass fiber, the other main materials are mixed conventionally and directly enter the twin-screw extruder for melting processing. At the same time, the glass fiber enters from the side feed port of the screw to start granulation. Example 3

[0041] Refer to Example 1, wherein the PC resin is 52 kg, the glass fiber is 18 kg, and the rest are the same.

[0042] Except for glass fiber, the other main materials are mixed conventionally and directly enter the twin-screw extruder for melting processing. At the same time, the glass fiber enters from the side feed port of the screw to start granulation. Example 4

[0043] Refer to Example 1, wherein the PC resin is 49 kg, the ABS resin is 6 kg, and the rest are the same.

[0044] Except for glass fiber, the other main materials are mixed conventionally and directly enter the twin-screw extruder for melting processing. At the same time, the glass fiber enters from the side feed port of the screw to start granulation. Example 5

[0045] Refer to Example 1, wherein the PC resin is 49Kg, the AS resin is 19Kg, the ABS resin is 7Kg, and the rest are the same.

[0046] Except for glass fiber, the other main materials are mixed conventionally and directly enter the twin-screw extruder for melting processing. At the same time, the glass fiber enters from the side feed port of the screw to start granulation. Example 6

[0047] Refer to Example 1, wherein the coupling agent is 0.9 Kg, the masterbatch is 0.9 Kg, and the rest are the same.

[0048] Except for glass fiber, the other main materials are mixed conventionally and directly enter the twin-screw extruder for melting processing. At the same time, the glass fiber enters from the side feed port of the screw to start granulation.

[0049] In the present invention, the decomposition of PC is reduced, and the glass fiber is not cut too finely, which would weaken the reinforcing effect on the material. Compared with the best similar products currently used in production (Table 2 control example), the present invention has excellent mechanical properties and good heat retention data. By optimizing the formula ratio, the material performance is improved and the process stability is improved.

Claims

1. A PC / ABS / GF composite material, wherein the raw materials for preparing the composite material include PC resin, AS resin, ABS resin, glass fiber, toughening agent, coupling agent, auxiliary agent and masterbatch.

2. The PC / ABS / GF composite material according to claim 1, characterized in that: The mass percentages of PC resin, AS resin, ABS resin, glass fiber and toughening agent are balance, (15%-30%), (1%-10%), (15%-25%) and (1%-10%) respectively; the mass percentages of coupling agent, auxiliary agent and masterbatch are (0.5%-1.5%), (1%-3%) and (0.5%-1.5%) respectively.

3. The PC / ABS / GF composite material according to claim 2, characterized in that: The mass percentages of PC resin, AS resin, ABS resin, glass fiber and toughening agent are balance, (17%~25%), (2%~7%), (17%~23%) and (2%~8%) respectively; the mass percentages of coupling agent, auxiliary agent and masterbatch are (0.8%~1%), (2%~2.5%) and (0.7%~1.3%) respectively.

4. The method for preparing the PC / ABS / GF composite material according to claim 1, comprising the following steps: melt-mixing raw materials including PC resin, AS resin, ABS resin, glass fiber, toughening agent, coupling agent, auxiliary agent and masterbatch to obtain the PC / ABS / GF composite material.

5. The method for preparing the PC / ABS / GF composite material according to claim 4, characterized in that: The glass fiber is short glass fiber; and the coupling agent is a silane coupling agent.

6. Use of the PC / ABS / GF composite material according to claim 1 in the preparation of glass fiber reinforced polycarbonate material.

7. Use of the PC / ABS / GF composite material according to claim 1 in the preparation of polycarbonate products.

8. Use of the PC / ABS / GF composite material according to claim 1 in the preparation of automotive materials.

9. Use of the PC / ABS / GF composite material according to claim 1 in preparing a heat retention enhanced polycarbonate material, or in improving the heat retention capacity of a polycarbonate material.

10. An automotive material, prepared by preparing a glass fiber reinforced polycarbonate material from the PC / ABS / GF composite material according to claim 1.

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