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 low hardness and strength, high surface hardness, etc., achieve the effects of improving processing performance, reducing melt viscosity, and good application prospects

Inactive Publication Date: 2010-08-18
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

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] Example 1: Weigh the raw materials according to the following weight percentages: PC 75%, PMMA 15%, toughening agent 6%, compatibilizer 3%, and antioxidant 1%. Add PC, PMMA, toughening agent, compatibilizer and antioxidant into the high-speed batching mixer in the order of priority, first mixing at low speed for 1-2 minutes, then high-speed mixing for 3-4 minutes, low-speed continuous mixing 3-5 times ; The mixed premix is ​​placed in a twin-screw machine through melt extrusion and granulation. The process is: the first stage temperature of the twin screw is 220-230℃, the second stage temperature is 230-240℃, the third stage temperature is 240-250℃, the mold temperature is 60-100℃, the residence time is 1-2 minutes, and the pressure is 10-15MPa.

Embodiment 2

[0021] Example 2: The raw materials are weighed according to the following weight percentages: PC 82%, PMMA 10%, toughening agent 4%, compatibilizer 3%, and antioxidant 1%. Add PC, PMMA, toughening agent, compatibilizer and antioxidant into the high-speed batching mixer in the order of priority. Stir at low speed for 1-2 minutes, then at high speed for 3-4 minutes, and continuously at low speed for 3-5 times ; The mixed premix is ​​placed in a twin-screw machine through melt extrusion and granulation. The process is: the first stage temperature of the twin screw is 220-230℃, the second stage temperature is 230-240℃, the third stage temperature is 240-250℃, the mold temperature is 60-100℃, the residence time is 1-2 minutes, and the pressure is 10-15MPa.

Embodiment 3

[0022] Example 3: Weigh the raw materials according to the following weight percentages: PC 78%, PMMA 10%, toughening agent 7%, compatibilizer 3%, and antioxidant 2%. Add PC, PMMA, toughening agent, compatibilizer and antioxidant into the high-speed batching mixer in the order of priority, first mixing at low speed for 1-2 minutes, then high-speed mixing for 3-4 minutes, low-speed continuous mixing 3-5 times ; The mixed premix is ​​placed in a twin-screw machine through melt extrusion and granulation. The process is: the first stage temperature of the twin screw is 220-230℃, the second stage temperature is 230-400℃, the third stage temperature is 240-250℃, the mold temperature is 60-100℃, the residence time is 1-2 minutes, and the pressure is 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, high hardness 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 (PC), a non-crystalline thermoplastic engineering plastic with excellent performance, has outstanding impact resistance, good creep resistance and dimensional stability, heat resistance, low water absorption, non-toxic, and dielectric properties It is a general engineering plastic with the fastest growth rate in recent years. At present, it is widely used in automotive, electrical and electronic, 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 disks. However, unmodified polycarbonate still has shortcomings. It is manifested in the shortcomings of insufficient processing fluidity, poor resistanc...

Claims

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Application Information

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