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PC/ABS (polycarbonate/acrylonitrile butadiene styrene) alloy and preparation process thereof

A preparation process and alloy technology, which is applied in the field of PC/ABS alloy and its preparation process, can solve the problems that the mechanical properties and processing properties of PC/ABS alloy cannot be significantly improved, polybutadiene is difficult to be compatible, and the physical properties are reduced. , to achieve the effect of good fluidity, not easy to flow marks, and large melt index

Active Publication Date: 2017-05-17
南京跃贝新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, ABS is a graft copolymer with polybutadiene as the main chain, a branched chain of styrene and acrylonitrile copolymer, a random copolymer of styrene and acrylonitrile (AS resin), and ungrafted free Polybutadiene is composed of three main components. The solubility parameters of AS in PC and ABS are relatively close, and the compatibility is good. However, PC and polybutadiene in ABS are difficult to be compatible. Therefore, PC / ABS alloys still exist Disadvantages of poor compatibility
Weak connection between them will cause physical performance degradation
In order to improve the compatibility of ABS and PC, ABS-g-MAH is added as a compatibilizer of PC / ABS alloy in the preparation process, but the mechanical properties and processability of PC / ABS alloy can not be significantly improved.

Method used

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  • PC/ABS (polycarbonate/acrylonitrile butadiene styrene) alloy and preparation process thereof
  • PC/ABS (polycarbonate/acrylonitrile butadiene styrene) alloy and preparation process thereof

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preparation example Construction

[0040] The preparation method of pomelo peel extract:

[0041] (1) Put the pomelo peel into an extraction tank after being crushed and mixed with absolute ethanol in a weight ratio of grapefruit peel: absolute ethanol = 1:1, heated to 50°C and then refluxed for 3 hours to collect the extract;

[0042] (3) Import the collected extract into a concentrator for concentration under reduced pressure at a temperature of 25°C and a vacuum of 1.0Mpa, and concentrate to 1 / 4 of the volume of the original extract;

[0043] (4) Set the rotating speed of the concentrated extract in a horizontal centrifuge as 4800r / min for centrifugal 3min;

[0044] (5) Filter and get the filtrate into the D101 macroporous resin column, the flow rate is 1.5BV / hr, wash the column with ethanol with a mass concentration of 70% until the effluent is clear, the time is 2h, collect the effluent from the macroporous resin column The clear, transparent, slightly mellow eluate, the collected eluate is 1 times the am...

Embodiment 1

[0050] (1) Dry PC at 120°C for 3.2 hours, and dry ABS at 50°C for 4 hours;

[0051] (2) Weigh 45 parts of PC, 45 parts of ABS, 5 parts of MBS, 5 parts of ABS-g-MAH, 4 parts of SMA, 1.2 parts of PET, 1 part of black masterbatch, 3 parts of adsorbent A, 4 parts of antibacterial agent, antibacterial Pour 0.2 parts of oxidant and 0.6 parts of chemical deodorant into a high-speed mixing tank, and the stirring speed is 330r / min;

[0052] (3) Add the material mixed in step (2) into the twin-screw extruder with an aspect ratio of 48:1. The temperature inside the barrel of the twin-screw extruder is: 220°C in the first zone, 240°C in the second zone, and 240°C in the third zone 240°C, 240°C in the fourth zone, 240°C in the fifth zone, 240°C in the sixth zone, 240°C in the seventh zone, 240°C in the eighth zone, 240°C at the head, and the speed of the twin-screw extruder is 330r / min. Through melt extrusion and granulation.

Embodiment 2

[0054] (1) Dry PC at 110°C for 4 hours and ABS at 80°C for 3 hours;

[0055] (2) Weigh 65 parts of PC, 35 parts of ABS, 8 parts of MBS, 2 parts of ABS-g-MAH, 3 parts of SMA, 1.5 parts of PET, 2 parts of black masterbatch, 4 parts of adsorbent C, 3 parts of antibacterial agent, antibacterial Pour 0.4 part of oxidizing agent and 0.9 part of chemical deodorant into a high-speed mixing tank, and the stirring speed is 360r / min;

[0056] (3) Add the material mixed in step (2) into the twin-screw extruder with an aspect ratio of 48:1. The temperature inside the barrel of the twin-screw extruder is: 230°C in the first zone, 230°C in the second zone, and 230°C in the third zone. 230°C, 230°C in the fourth zone, 230°C in the fifth zone, 230°C in the sixth zone, 230°C in the seventh zone, 230°C in the eighth zone, 250°C at the head, and the speed of the twin-screw extruder is 260r / min. Through melt extrusion and granulation.

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Abstract

The invention discloses a PC / ABS (polycarbonate / acrylonitrile butadiene styrene) alloy and a preparation process thereof, and solves the problem that the mechanical property and the processability of the PC / ABS alloy still cannot be obviously improved. The key point of the technical scheme is that the PC / ABS alloy is prepared from the following components in parts by mass: 45 to 65 parts of PC, 35 to 45 parts of ABS, 4 to 10 parts of MBS, 2 to 5 parts of ABS-g-MAH, 2 to 5 parts of SMA, 0.1 to 0.5 part of PC-g-SMA, 0.1 to 0.5 part of PC-g-ABS, 0.5 to 1.5 parts of PET, 1 to 2 parts of black master batch, 3 to 5 parts of an adsorbent, 2 to 4 parts of an antibacterial agent, 0.1 to 0.5 part of an antioxidant and 0.5 to 1.0 part of a chemical deodorant. The PC / ABS alloy achieves the effect of improving the mechanical property and the processability of the PC / ABS alloy.

Description

technical field [0001] The invention relates to plastic alloys, in particular to a PC / ABS alloy and a preparation process thereof. Background technique [0002] PC / ABS alloy is a modified engineering plastic synthesized by mixing polycarbonate (PC) and polyacrylonitrile (ABS). It combines the excellent characteristics of the two materials, the formability of ABS material and the mechanical properties of PC. Impact strength, temperature resistance, ultraviolet (UV) resistance and other properties, can be widely used in automotive interior parts, business machines, communication equipment, home appliances and lighting equipment. [0003] During the manufacturing process of PC / ABS alloy, the odor emitted by the diffusion of small molecules will seriously affect the car experience of consumers and have adverse effects on the health and psychology of the occupants in the car. Air quality is also more important, and higher odor requirements are put forward for automotive material...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L55/02C08L51/04C08L67/02C08L35/06C08L25/12C08L87/00C08K13/06C08K9/04C08K9/00C08K3/04C08K3/22C08K5/42C08K5/00
CPCC08K2201/011C08L55/02C08L69/00C08L2205/025C08L2205/035C08L51/04C08L67/02C08L35/06C08L25/12C08L87/00C08K13/06C08K9/04C08K9/00C08K3/04C08K2003/2241C08K5/42C08K5/00
Inventor 惠叶金
Owner 南京跃贝新材料科技有限公司
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