针对聚甲醛（ POM）热稳定性较差的问题，研究了抗氧剂、吸醛吸酸剂和成核剂对其长期热氧稳定化的影响。结果表明，经120℃/1000h的热氧老化后，吸醛剂K-3对POM的断裂伸长率保持率的改善最为明显，达99.5％；成核剂则在保持POM力学性能的基础上，有效降低了热氧老化后的b值，显示了优异的长期热氧稳定化作用。
In view of the poor thermal stability of POM ,effects of antioxidants,formaldehyde absorbers and nu-cleating agent on the long-term thermal stability of POM were investigated.It has been concluded from thermal-oxi-dative aging(100℃/1000h) test that elongation retention of POM can be distinctly improved to reach 99.5% by formaldehyde absorber K and the value of b has been outstandingly improved by the addition of nucleating agent , which maintains good mechanical properties and plays an important role in long -term thermal stability.
参考文献
| [1] | V V Gur′yanova;B M Kovarskaya;M B Neiman;O N Nitche .Accelerated degradation of the polyform-aldehyde chain on oxidation[J].Polymer Science U S S R,1966,8(10):1968-1972. |
| [2] | A.B.Blymenfel′d;M.B.Neiman;B.M.Kovarskaya .Products of the thermo-oxidative degradation of poly-formaldehyde[J].Polymer Science U S S R,1966,8(11):2199-2206. |
| [3] | A.B.Blymenfel′d;M.V.kotrelev;B.M.Kovarskaya .The thermal degradation of polyformaldehyde (PFA)[J].Polymer Science U S S R,1970,12(1):94-103. |
| [4] | L.A.Dudina;L.A.Agayants;L.V.Kamilova;N.S.Yenikolopyan .Thermal and thermal oxidative deg-radation of polyformaldehyde-V.Role of formic acid in thermal-oxidative degradation[J].Polymer Science U S S R,1964,5(2):316-322. |
| [5] | 杨锋,王志春,陈晓勇,汤思聪,向明.复配型受阻酚类抗氧剂对聚甲醛的稳定作用[J].塑料工业,2005(06):61-63. |
| [6] | 张丽娟,成睿,丁雪佳,张雨,周克斌,郭甜甜,韩海军.抗氧剂1010对聚甲醛性能的影响[J].化工进展,2011(08):1795-1799. |
| [7] | 段怡飞 .聚甲醛的热降解和稳定化研究[D].四川大学,2004. |
| [8] | 孙天举,叶林,赵晓文.胺处理聚甲醛的热稳定化研究[J].塑料工业,2006(06):50-53. |
| [9] | 胡友亮 .聚甲醛甲醛吸收剂高分子化研究[D].四川大学,2005. |
| [10] | N.Grassie;R.S.Roche .The thermal degradation of polyoxymethylene[J].Macromolecular Chem-istry and Physics,1968,112(1):16-33. |
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%