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ABS 丙烯腈-丁二烯-苯乙烯共聚物
典型應用范圍:
汽車（儀表板，工具艙門，車輪蓋，反光鏡盒等），電冰箱，
大強度工具（頭發烘干機，攪拌器，食品加工機，割草機等），電話機殼體，
打字機鍵盤，娛樂用車輛如高爾夫球手推車以及噴氣式雪撬車等。
注塑模工藝條件:
干燥處理：ABS材料具有吸濕性，要求在加工之前進行干燥處理。建議干燥條件
為80~90C下最少干燥2小時。材料溫度應保證小于0.1%。
熔化溫度：210~280C；建議溫度：245C。
模具溫度：25…70C。（模具溫度將影響塑件光潔度，溫度較低則導致光潔度較低）。
注射壓力：500~1000bar。
注射速度：中高速度。
化學和物理特性:
ABS是由丙烯腈、丁二烯和苯乙烯三種化學單體合成。每種單體都具有不同特性：
丙烯腈有高強度、熱穩定性及化學穩定性；丁二烯具有堅韌性、抗沖擊特性；
苯乙烯具有易加工、高光潔度及高強度。從形態上看，ABS是非結晶性材料。
三中單體的聚合產生了具有兩相的三元共聚物，一個是苯乙烯-丙烯腈的連續相，
另一個是聚丁二烯橡膠分散相。ABS的特性主要取決于三種單體的比率以及兩相
中的分子結構。這就可以在產品設計上具有很大的靈活性，并且由此產生了市場
上百種不同品質的ABS材料。這些不同品質的材料提供了不同的特性，例如從中等
到高等的抗沖擊性，從低到高的光潔度和高溫扭曲特性等。
ABS材料具有超強的易加工性，外觀特性，低蠕變性和優異的尺寸穩定性以及很高
的抗沖擊強度。
ABS
Generic Class
ABS (Acrylonitrile-Butadiene-Styrene)
Typical Applications
Automotive (instrument and interior trim panels, glove compartment doors, wheel covers, mirror housings, etc.), refrigerators, small appliance housings and power tools applications (hair dryers, blenders, food processors, lawnmowers, etc.), telephone housings, typewriter housings, typewriter keys, and recreational vehicles such as golf carts and jet skis.
Injection Molding Processing Conditions
Drying ABS resins are hygroscopic and drying is required prior to processing. Suggested drying conditions are 80 - 90 C (176 - 195 F) for a minimum of 2 hours. Resin moisture content should be less than 0.1%
Melt Temperature 200 - 280 C (392 - 536 F); Aim: 230 C (446 F)
Mold Temperature 25 - 80 C (77 - 176 F). (Mold temperatures control the gloss properties; lower mold temperatures produce lower gloss levels)
Resin Injection Pressure 500 - 1,000 bar (7,250 - 14,500 psi)
Injection Speed Moderate - high
Chemical and Physical Properties
ABS is produced by a combination of three monomers: acrylonitrile, butadiene, and styrene. Each of the monomers impart different properties: hardness, chemical and heat resistance from acrylonitrile; processibility, gloss, and strength from styrene; and toughness and impact resistance from butadiene. Morphologically, ABS is an amorphous resin.
The polymerization of the three monomers produces a terpolymer which has two phases: a continuous phase of styrene-acrylonitrile (SAN) and a dispersed phase of polybutadiene rubber. The properties of ABS are affected by the ratios of the monomers and molecular structure of the two phases. This allows a good deal of flexibility in product design and consequently, there are hundreds of grades available in the market. Commercially available grades offer different characteristics such as medium to high impact, low to high surface gloss, and high heat distortion.
ABS offers superior processibility, appearance, low creep and excellent dimensional stability, and high impact strength.
Major Manufacturers
Dow Chemical (Magnum grades), GE Plastics (Cycolac), Bayer (Lustran), BASF (Terluran), Chi Mei (Polylac), LG Chemical (Lupos), Cheil Synthesis.
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