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PC/PMMA alloy and preparation method thereof

A technology of alloy and toughening agent, which is applied in the field of PC/PMMA alloy and its preparation, can solve the problems of high surface hardness, low hardness and strength, improve processing performance, reduce melt viscosity, improve chemical corrosion resistance and Effect of Surface Hardness and Mechanical Strength

Inactive Publication Date: 2012-06-13
SHENZHEN KEJU NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for areas with special performance requirements, PC / ABS alloys also have some problems, such as low hardness and strength, high surface hardness, high strength, and products that require special chemical environments are not suitable for PC / ABS alloys

Method used

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  • PC/PMMA alloy and preparation method thereof
  • PC/PMMA alloy and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1: Weigh raw materials according to the following weight percentages: PC 75%, PMMA 15%, toughening agent 6%, compatibilizer 3%, antioxidant 1%. Add PC, PMMA, toughening agent, compatibilizer and antioxidant into the high-speed batch mixer in sequence, first stir at low speed for 1-2 minutes, then stir at high speed for 3-4 minutes, and continuously stir at low speed for 3-5 times ; Place the mixed premixed material in a twin-screw machine for granulation through melt extrusion. The process is: twin-screw first stage temperature 220-230°C, second stage temperature 230-240°C, third stage temperature 240-250°C, mold temperature 60-100°C, residence time 1-2 minutes, pressure 10-15MPa.

Embodiment 2

[0021] Embodiment 2: Weigh raw materials according to the following weight percentages: PC 82%, PMMA 10%, toughening agent 4%, compatibilizer 3%, antioxidant 1%. Add PC, PMMA, toughening agent, compatibilizer and antioxidant into the high-speed batch mixer in sequence, first stir at low speed for 1-2 minutes, then stir at high speed for 3-4 minutes, and continuously stir at low speed for 3-5 times ; Place the mixed premixed material in a twin-screw machine for granulation through melt extrusion. The process is: twin-screw first stage temperature 220-230°C, second stage temperature 230-240°C, third stage temperature 240-250°C, mold temperature 60-100°C, residence time 1-2 minutes, pressure 10-15MPa.

Embodiment 3

[0022] Embodiment 3: Weigh raw materials according to the following weight percentages: PC 78%, PMMA 10%, toughening agent 7%, compatibilizer 3%, antioxidant 2%. Add PC, PMMA, toughening agent, compatibilizer and antioxidant into the high-speed batch mixer in sequence, first stir at low speed for 1-2 minutes, then stir at high speed for 3-4 minutes, and continuously stir at low speed for 3-5 times ; Place the mixed premixed material in a twin-screw machine for granulation through melt extrusion. The process is as follows: twin-screw first stage temperature 220-230°C, second stage temperature 230-400°C, third stage temperature 240-250°C, mold temperature 60-100°C, residence time 1-2 minutes, pressure 10-15MPa.

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Abstract

The invention relates to a PC / PMMA alloy and a preparation method thereof. The PC / PMMA alloy comprises the following components by weight percent: 75-82% of PC, 10-15% of PMMA, 4-10% of toughener, 3-5% of compatibilizer and 1-2% of antioxidant. The PC / PMMA alloy has the advantages of good mold filling flowability, excellent processing performance, high impact resistance, chemical resistance, highhardness and difficult scratching, and can adjust the transmittance of the PC / PMMA and the surface pearlescent color according to the needs, and be used as housings of communication devices with higher surface hardness and used for packaging foods with higher requirements on the surface luster.

Description

[technical field] [0001] The invention relates to the technical field of polymer materials, in particular to a PC / PMMA alloy and a preparation method thereof. [Background technique] [0002] Polycarbonate (Polycarbonate, PC), is a non-crystalline thermoplastic engineering plastic with excellent performance, has outstanding impact resistance, creep resistance and dimensional stability, heat resistance, low water absorption, non-toxic, dielectric properties Excellent, is the fastest growing general engineering plastics in recent years. At present, it is widely used in automobiles, electronics, construction, office equipment, packaging, sports equipment, medical care and other fields. With the continuous deepening of modification research, it is rapidly expanding to high-tech fields such as aerospace, computers, and optical discs. However, unmodified polycarbonates still have deficiencies. It is manifested in the shortcomings of insufficient processing fluidity, poor stress c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L69/00C08L33/12C08L63/00C08G59/06
Inventor 徐东徐永何杰
Owner SHENZHEN KEJU NEW MATERIAL