急需中文摘要的英文翻译，大家来帮下我，非常感谢

后面这一段应该融合进结果分析中：“Z后通过拉伸实验、冲击实验、维卡软化点温度的测定和低温试验，证明了添加纳米TiO2对材料力学性能的影响，并找出纳米TiO2对PVC材料性能改进的一些规律。”建议修正为：拉伸实验、冲击实验、维卡软化点温度的测定和低温试验的研究结果表明：选择适当的加工助剂，加入纳米TiO2后PVC的强度和韧性都得到了改善，从而达到了PVC改性的目的。其他汉语还有很多不恰当的前后次序，但是英语表达一一纠正过来了，建议你翻译成汉语当作中文摘要使用即可。

Research on Modification of a Filling Material， Nano-TiO2， to Polyvinyl Chloride
Abstract: the modification of polyvinyl chloride (PVC) using inorganic nanomaterials to improve its physical properties has become a focal point in recent years. The modification of inorganic nanomaterials is to strengthen PVC’s strength and toughness in parallel with reduce the cost. The modification methods can be categorized as physical modification and chemical modification， and the former can be sub-categorized as blending modification and filling modification. This experiment selected filling modification， and processing aids added mainly included plasticizer， anti-impact modifier， lubricants， and heat stabilizer. The author put forward the experimental method of addition of inorganic nano-TiO2 to strengthen and modify some properties such as tensile strength and impact strength of PVC plastics. The experimental procedure was designed according to requirement. The results of tensile test， impact test， Vicat softening temperature determination， and low temperature tolerance test showed that when processing aids been properly selected， the addition of nano-TiO2 improved the strength and toughness of PVC materials.
Keywords: Nano-TiO2; PVC; Modification