Research On The Modification Of ABS Resins Properties

In this study, Acrylonitrile-butadiene-styrene (ABS) blends were prepared by melt blending PB-g-SAN and SAN resins, which supplied by Jilin Petrochemical company synthetic factory. The effects of PB-g-SAN content on the properties of ABS blends were systematically studied with several techniques. As experimental result. When the content of PB-g-SAN increased from 9% to 24% and 35%, the impact strength of ABS blend increased by 5.7 times and 12 times respectively, the impact strength of the blends was increased with increasing PB-g-SAN content. Whereas, When PB-g-SAN content increased from 9% to 24% and 35%, the flexural strength decrease by 25.6% and 37% respectively, the bending modulus is reduced by 28.8% and 36.5% respectively, the tensile strength decrease by 27.5% and 35% respectively, melt index by 21.1% and 41.9% respectively, rockwell hardness reduced by 5.4% and 13% respectivelyother properties, such as flexural strength, flexural modulus, tensile strength, melt flow index, and Rockwell hardness of the blends were decreased when PB-g-SAN content was increased. The SEM result indicated that the crack of fracture surface was gradually decreased and the distribution of rubber particles was increased with increasing rubber content.The interparticle distance of rubber was calculated by S. Wu equation, and the correlation between the interparticle distance and impact strength for ABS blends was also studied. It was observed that the brittle-tough transition of ABS blends occurred when ID was 0.14 μm.Seven kinds of ABS samples, which have high yield and sales volume, were chosen as the contrast objects, and the morphology and properties were studied from microcosmic and macrocosmic perspectives. The elemental analysis, glass transition temperature, thermal stability measurements, mechanical properties and morphology of ABS samples were carried out. As result, The sample JH showed higher glass transition temperature in the rubber region. The TGA analysis result indicated that the thermal stability was not significantly varied for all ABS samples. The mechanical properties and the hardness of the sample JH showed good performance, It is mainly to improve the melt index of ABS, by adding additives to improve the fluidity of ABS product.Focus on JZ-2S, JZ-23 two kinds of additives added to ABS emulsion, influence on the fluidity of ABS products. The experimental results show that, JZ-2S, JZ-23, whether monomer or emulsion can improve the melt index of the product. The addition of JZ-2S and JZ-23 in the ABS emulsion was less than the addition of the powder mixed with the effect of the addition of the mixture. But it can still meet the expectations of the experimental results. By adding the emulsifying liquid of JZ-23, the most ideal is ABS emulsion is more economical, more practical, than the original increased by 11.6%.