通过测试共聚PP和均聚PP在不同测试条件下的脆化温度，讨论了脆化温度测试的相关影响因素。结果表明，冷冻时间、试样厚度及退火处理等都会对测试结果产生影响。冷冻时间变长会使脆化温度测试结果偏高；试样厚度越大，测得的脆化温度越高；退火对结晶型材料影响较大，而且结晶度越高，退火的影响越大。
The influencing factors on the plastic's brittleness temperature testing results were studied by testing homo-polypropylene and co-polypropylene in different measurement conditions.The result shows that freezing time , the thickness of samples and annealing treatment affects testing results.The brittleness temperature results increase as the freezing time elongated.The thickness of the sample is greater ,the brittleness temperature is higher.Annea-ling has great effect on the crystalline material ,and higher the degree of crystallization results greater the influence of annealing.
参考文献
| [1] | ASTM D746-2007.Standard Test Method for Brit-tleness Temperature of Plastics and Elastomers by Impact[S]. |
| [2] | 贾展宁.双基和改性双基推进剂脆化温度研究[J].北京工业学院学报,1987(02):82-88. |
| [3] | GB/T 5470-2008.塑料-冲击法脆化温度的测定[S].北京:中国标准出版社,2008. |
| [4] | ISO 974-2000.塑料-冲击法脆化温度的测定[S]. |
| [5] | JIS K7216-1980.塑料脆化温度试验方法[S]. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%