以低相对分子质量环氧树脂、双酚A和柔性链羧酸为原料采用两步法合成一种用于粉末涂料的韧性固化剂.用傅里叶红外光谱和凝胶渗透色谱对产物结构进行表征,测试粉末涂料的凝胶时间和力学性能,采用差示扫描量热分析研究涂料体系的固化动力学.结果表明,柔性链羧酸成功接入到固化剂中,合成的固化剂羟基值为0.55 mol/100g～ 0.65mol/100g,软化点为90℃～98℃时;180℃凝胶时间为21 s,冲击韧性为50 kg·cm,附着力为0级.固化体系的表观活化能(Ea)为76.83 kJ/mol,反应级数(n)为0.92.
参考文献
| [1] | Chen QA.;Gao BJ.;Chen JL. .Properties of impregnation resin added to multifunctional epoxy at cryogenic temperature[J].Journal of Applied Polymer Science,2003(5):1385-1389. |
| [2] | Garcia SJ;Serra A;Suay J .New powder coatings with low curing temperature and enhanced mechanical properties obtained from DGEBA epoxy resins and meldrum acid using erbium triflate as curing agent[J].Journal of Polymer Science, Part A. Polymer Chemistry,2007(11):2316-2327. |
| [3] | 周佳麟,范和平.环氧树脂柔性固化剂研究综述[J].化学推进剂与高分子材料,2006(03):13-16. |
| [4] | 李宏静,刘伟区,魏振杰.两亲性嵌段共聚物增韧环氧树脂[J].高分子材料科学与工程,2011(11):61-64. |
| [5] | 韩俊华,吕建,徐晓伟,宋程,王冰.环氧粉末涂料的固化动力学和固化工艺的研究[J].热固性树脂,2010(03):1-5. |
| [6] | 李建国,王成忠,于运花,杨小平.拉挤工艺体系的乙烯基酯树脂固化动力学[J].高分子材料科学与工程,2004(03):183-186. |
| [7] | Rosu D.;Cascaval CN.;Mustata F.;Ciobanu C. .Cure kinetics of epoxy resins studied by non-isothermal DSC data[J].Thermochimica Acta: An International Journal Concerned with the Broader Aspects of Thermochemistry and Its Applications to Chemical Problems,2002(1/2):119-127. |
| [8] | Moon-Kwang Um;Isaac M. Daniel;Byung-Sun Hwang .A study of cure kinetics by the use of dynamic differential scanning calorimetry[J].Composites science and technology,2002(1):29-40. |
| [9] | Rosu D.;Cascaval CN.;Mustata F. .Investigation of the curing reactions of some multifunctional epoxy resins using differential scanning calorimetry[J].Thermochimica Acta: An International Journal Concerned with the Broader Aspects of Thermochemistry and Its Applications to Chemical Problems,2001(1/2):105-110. |
| [10] | 赵卫娟,张佐光,孙志杰,张大兴.非等温法研究TGDDM/DDS体系固化反应动力学[J].高分子学报,2006(04):564-568. |
| [11] | 吴宗汉,罗曼.环氧树脂及涂料的增韧改性[J].涂料工业,2009(12):62-65. |
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%