positive: 它是表面活性剂,帮助清洗带走皮肤上的油脂、灰尘等。适量的话,对皮肤无害,很多洗面产品都含有。
negative: <br>10. The research results showed that the DFA based polyester resin had better mechanicalperformance, the water-fast performance, rate of elongation, flexility, the performanceof biodegradation and the burning-fast performance, but the chemical solvent-fastperformance, rigidity, tensile-strength were decreased.<br>研究结果显示,二聚脂肪酸的引入,使聚酯树脂具有很好的力学性能、耐水性、断裂伸长率、柔韧性、生物降解性及耐燃性能(耐燃性能可达到GB 2408—80Ⅱ级),但也会使聚酯树脂的耐溶剂性能、硬度和拉伸强度下降。<br>11. The experimental results show that the flame retardancy of PE comes up to the GB2408-80, and the mechanical properties of PE are reduced slightly.<br>实验结果表明:加入阻燃剂的聚乙烯阻燃性可达GB2408&80标准,力学性能略有下降。<br>12. Among the methods, the Level combustion method (GB2408-80) used in epoxy resin (E-44) and perpendicular combustion method (GB5455-97) used in cotten cloth are standard methods.<br>其中用于环氧树脂(E-44)的水平燃烧试验(GB2408-80)和用于棉布的垂直燃烧实验(GB5455-97)是标准实验方法。