摘要
将nano-SiO2引入环己烷-1,2-二甲酸二异壬酯(DINCH)增塑的软质聚氯乙烯(PVC)中,研究了nano-SiO2用量对PVC试片中的DINCH在30℃、95%乙醇浸泡环境中的迁移行为及试片拉伸性能的影响。结果表明:增塑剂的迁移率随着浸泡时间的延长而呈总体上升趋势,前期上升较快,中期缓慢,后期逐渐趋于平衡;nano-SiO2的添加可以降低DINCH的迁移率,并且当nano-SiO2用量为1份时,DINCH在溶剂中的迁移抑制率最大,而此时DINCH的挥发损失率亦最小;另外,随着nano-SiO2用量的增加,PVC试片的拉伸强度和断裂伸长率有所下降,但降幅不大。
Introducing nano-SiO2 into the soft polyvinyl chloride（PVC） plasticized with 1,2-dimethyl isononylphtalate（DINCH）, the effect of nano-SiO2 on environment plasticizer DINCH migrating from PVC in 95% ethanol（under the condition of 30℃） and the tensile properties of PVC samples were studied. The results show that the migration rate of DINCH increases with the elongation of immersion time, and increases quickly at early stage, slow in medium-term and tends to be stable in later stage. The DINCH migration can be resisted by addition of nano-SiO2 in soft PVC. When the content of nano-SiO2 is 1 phr, the sample has the maximum migration inhibition rate and minimum evaporation rate of DINCH. Moreover, the tensile strength and elongation at break of soft PVC decrease slightly with the increase of nano-SiO2 content.
出处
《塑料科技》
CAS
北大核心
2014年第7期35-38,共4页
Plastics Science and Technology
基金
国家科技部十二.五科技支撑项目(2012BAD32B03)
