摘要
采用热塑性弹性体苯乙烯–丁二烯–苯乙烯塑料(SBS)对丙烯腈–丁二烯–苯乙烯塑料(ABS)进行熔融共混改性,以制备3D打印ABS功能材料,研究了两种不同结构SBS及其用量对ABS/SBS共混物流变性能和力学性能的影响。流变实验结果表明,ABS/SBS共混物的流动性明显变好,流变性能的剪切频率依赖性变弱,低频下熔体强度升高,ABS/SBS(线型)共混物的温度敏感性较纯ABS低,ABS/SBS(星型)共混物的温度敏感性较纯ABS高;力学性能实验结果表明,ABS/SBS共混物的韧性提高,在ABS中加入质量分数为10%的SBS,弯曲性能和拉伸强度保持率分别在85%,80%以上。可较好地满足3D打印对ABS流动性好、流变性能对剪切频率的依赖性低、熔体强度和韧性高等要求。
Thermoplastic elastomer styrene-butadiene-styrene plastic（SBS） was used to modification of acrylonitrile-butadiene- styrene plastic（ABS） by melt blending, in the preparation of 3D printing ABS functional materials. Effects of two different structures SBS on the rheological properties and the mechanical properties of the ABS/SBS blends were studied. The rheological test results show that the mobility gets better and the degree of sensitivity of the shear viscosity on the shear rate of the ABS / SBS blends decreases, while the melt strength increases significantly under low frequency. The temperature sensitivity ofABS / SBS（linear） blend is lower than that of pure ABS, and the temperature sensitivity ofABS/SBS（star） blend is higher than that of pure ABS. The mechanical properties results show that the toughness of ABS/SBS blend is improved. Bending performance and tensile strength can remained at 85% and 80% respectively, when add the mass fraction of 10% SBS in ABS. Better meet the better mobility, the lower degree of sensitivity of the rheological properties on shear frequency, the higher melt strength and toughness for 3D printing ABS.
出处
《工程塑料应用》
CAS
CSCD
北大核心
2015年第9期54-59,共6页
Engineering Plastics Application
